/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2017 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
*
* @(#)kpi_vfs.c
*/
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
/*
* External virtual filesystem routines
*/
-#undef DIAGNOSTIC
-#define DIAGNOSTIC 1
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/mount_internal.h>
#include <sys/time.h>
+#include <sys/disk.h>
#include <sys/vnode_internal.h>
#include <sys/stat.h>
#include <sys/namei.h>
#include <sys/ucred.h>
#include <sys/buf.h>
#include <sys/errno.h>
-#include <sys/malloc.h>
+#include <kern/kalloc.h>
#include <sys/domain.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
#include <sys/vm.h>
#include <sys/sysctl.h>
#include <sys/filedesc.h>
+#include <sys/event.h>
#include <sys/fsevents.h>
#include <sys/user.h>
#include <sys/lockf.h>
#include <sys/xattr.h>
+#include <sys/kdebug.h>
#include <kern/assert.h>
-#include <kern/kalloc.h>
+#include <kern/zalloc.h>
+#include <kern/task.h>
+#include <kern/policy_internal.h>
+
+#include <libkern/OSByteOrder.h>
#include <miscfs/specfs/specdev.h>
#include <mach/mach_types.h>
#include <mach/memory_object_types.h>
+#include <mach/task.h>
+
+#if CONFIG_MACF
+#include <security/mac_framework.h>
+#endif
+
+#if NULLFS
+#include <miscfs/nullfs/nullfs.h>
+#endif
+
+#include <sys/sdt.h>
#define ESUCCESS 0
#undef mount_t
#define COMPAT_ONLY
+#define NATIVE_XATTR(VP) \
+ ((VP)->v_mount ? (VP)->v_mount->mnt_kern_flag & MNTK_EXTENDED_ATTRS : 0)
-#define THREAD_SAFE_FS(VP) \
- ((VP)->v_unsafefs ? 0 : 1)
+#if CONFIG_APPLEDOUBLE
+static void xattrfile_remove(vnode_t dvp, const char *basename,
+ vfs_context_t ctx, int force);
+static void xattrfile_setattr(vnode_t dvp, const char * basename,
+ struct vnode_attr * vap, vfs_context_t ctx);
+#endif /* CONFIG_APPLEDOUBLE */
-#define NATIVE_XATTR(VP) \
- ((VP)->v_mount ? (VP)->v_mount->mnt_vtable->vfc_vfsflags & VFC_VFSNATIVEXATTR : 0)
+extern lck_rw_t * rootvnode_rw_lock;
-static void xattrfile_remove(vnode_t dvp, const char * basename, vfs_context_t context,
- int thread_safe, int force);
-static void xattrfile_setattr(vnode_t dvp, const char * basename, struct vnode_attr * vap,
- vfs_context_t context, int thread_safe);
+static errno_t post_rename(vnode_t fdvp, vnode_t fvp, vnode_t tdvp, vnode_t tvp);
+static ZONE_VIEW_DEFINE(ZV_VFS_CONTEXT, "vfs_context",
+ KHEAP_ID_DEFAULT, sizeof(struct vfs_context));
-static void
+/*
+ * vnode_setneedinactive
+ *
+ * Description: Indicate that when the last iocount on this vnode goes away,
+ * and the usecount is also zero, we should inform the filesystem
+ * via VNOP_INACTIVE.
+ *
+ * Parameters: vnode_t vnode to mark
+ *
+ * Returns: Nothing
+ *
+ * Notes: Notably used when we're deleting a file--we need not have a
+ * usecount, so VNOP_INACTIVE may not get called by anyone. We
+ * want it called when we drop our iocount.
+ */
+void
vnode_setneedinactive(vnode_t vp)
{
- cache_purge(vp);
+ cache_purge(vp);
- vnode_lock(vp);
+ vnode_lock_spin(vp);
vp->v_lflag |= VL_NEEDINACTIVE;
vnode_unlock(vp);
}
-int
-lock_fsnode(vnode_t vp, int *funnel_state)
-{
- if (funnel_state)
- *funnel_state = thread_funnel_set(kernel_flock, TRUE);
-
- if (vp->v_unsafefs) {
- if (vp->v_unsafefs->fsnodeowner == current_thread()) {
- vp->v_unsafefs->fsnode_count++;
- } else {
- lck_mtx_lock(&vp->v_unsafefs->fsnodelock);
-
- if (vp->v_lflag & (VL_TERMWANT | VL_TERMINATE | VL_DEAD)) {
- lck_mtx_unlock(&vp->v_unsafefs->fsnodelock);
-
- if (funnel_state)
- (void) thread_funnel_set(kernel_flock, *funnel_state);
- return (ENOENT);
- }
- vp->v_unsafefs->fsnodeowner = current_thread();
- vp->v_unsafefs->fsnode_count = 1;
- }
- }
- return (0);
-}
-
-
-void
-unlock_fsnode(vnode_t vp, int *funnel_state)
-{
- if (vp->v_unsafefs) {
- if (--vp->v_unsafefs->fsnode_count == 0) {
- vp->v_unsafefs->fsnodeowner = NULL;
- lck_mtx_unlock(&vp->v_unsafefs->fsnodelock);
- }
- }
- if (funnel_state)
- (void) thread_funnel_set(kernel_flock, *funnel_state);
-}
-
-
-
/* ====================================================================== */
/* ************ EXTERNAL KERNEL APIS ********************************** */
/* ====================================================================== */
/*
- * prototypes for exported VFS operations
+ * implementations of exported VFS operations
*/
-int
-VFS_MOUNT(struct mount * mp, vnode_t devvp, user_addr_t data, vfs_context_t context)
+int
+VFS_MOUNT(mount_t mp, vnode_t devvp, user_addr_t data, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
-
- if ((mp == dead_mountp) || (mp->mnt_op->vfs_mount == 0))
- return(ENOTSUP);
-
- thread_safe = mp->mnt_vtable->vfc_threadsafe;
-
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_mount == 0)) {
+ return ENOTSUP;
}
-
- if (vfs_context_is64bit(context)) {
+
+ if (vfs_context_is64bit(ctx)) {
if (vfs_64bitready(mp)) {
- error = (*mp->mnt_op->vfs_mount)(mp, devvp, data, context);
- }
- else {
+ error = (*mp->mnt_op->vfs_mount)(mp, devvp, data, ctx);
+ } else {
error = ENOTSUP;
}
+ } else {
+ error = (*mp->mnt_op->vfs_mount)(mp, devvp, data, ctx);
}
- else {
- error = (*mp->mnt_op->vfs_mount)(mp, devvp, data, context);
- }
-
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (error);
+
+ return error;
}
-int
-VFS_START(struct mount * mp, int flags, vfs_context_t context)
+int
+VFS_START(mount_t mp, int flags, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
- if ((mp == dead_mountp) || (mp->mnt_op->vfs_start == 0))
- return(ENOTSUP);
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_start == 0)) {
+ return ENOTSUP;
+ }
- thread_safe = mp->mnt_vtable->vfc_threadsafe;
+ error = (*mp->mnt_op->vfs_start)(mp, flags, ctx);
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
- error = (*mp->mnt_op->vfs_start)(mp, flags, context);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (error);
+ return error;
}
-int
-VFS_UNMOUNT(struct mount *mp, int flags, vfs_context_t context)
+int
+VFS_UNMOUNT(mount_t mp, int flags, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
- if ((mp == dead_mountp) || (mp->mnt_op->vfs_unmount == 0))
- return(ENOTSUP);
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_unmount == 0)) {
+ return ENOTSUP;
+ }
- thread_safe = mp->mnt_vtable->vfc_threadsafe;
+ error = (*mp->mnt_op->vfs_unmount)(mp, flags, ctx);
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
- error = (*mp->mnt_op->vfs_unmount)(mp, flags, context);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (error);
+ return error;
}
-int
-VFS_ROOT(struct mount * mp, struct vnode ** vpp, vfs_context_t context)
+/*
+ * Returns: 0 Success
+ * ENOTSUP Not supported
+ * <vfs_root>:ENOENT
+ * <vfs_root>:???
+ *
+ * Note: The return codes from the underlying VFS's root routine can't
+ * be fully enumerated here, since third party VFS authors may not
+ * limit their error returns to the ones documented here, even
+ * though this may result in some programs functioning incorrectly.
+ *
+ * The return codes documented above are those which may currently
+ * be returned by HFS from hfs_vfs_root, which is a simple wrapper
+ * for a call to hfs_vget on the volume mount point, not including
+ * additional error codes which may be propagated from underlying
+ * routines called by hfs_vget.
+ */
+int
+VFS_ROOT(mount_t mp, struct vnode ** vpp, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
-
- if ((mp == dead_mountp) || (mp->mnt_op->vfs_root == 0))
- return(ENOTSUP);
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_root == 0)) {
+ return ENOTSUP;
}
- thread_safe = mp->mnt_vtable->vfc_threadsafe;
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
- error = (*mp->mnt_op->vfs_root)(mp, vpp, context);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (error);
+
+ error = (*mp->mnt_op->vfs_root)(mp, vpp, ctx);
+
+ return error;
}
-int
-VFS_QUOTACTL(struct mount *mp, int cmd, uid_t uid, caddr_t datap, vfs_context_t context)
+int
+VFS_QUOTACTL(mount_t mp, int cmd, uid_t uid, caddr_t datap, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
- if ((mp == dead_mountp) || (mp->mnt_op->vfs_quotactl == 0))
- return(ENOTSUP);
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_quotactl == 0)) {
+ return ENOTSUP;
+ }
- thread_safe = mp->mnt_vtable->vfc_threadsafe;
+ error = (*mp->mnt_op->vfs_quotactl)(mp, cmd, uid, datap, ctx);
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
- error = (*mp->mnt_op->vfs_quotactl)(mp, cmd, uid, datap, context);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (error);
+ return error;
}
-int
-VFS_GETATTR(struct mount *mp, struct vfs_attr *vfa, vfs_context_t context)
+int
+VFS_GETATTR(mount_t mp, struct vfs_attr *vfa, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
- if ((mp == dead_mountp) || (mp->mnt_op->vfs_getattr == 0))
- return(ENOTSUP);
-
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
- }
- thread_safe = mp->mnt_vtable->vfc_threadsafe;
-
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_getattr == 0)) {
+ return ENOTSUP;
}
- error = (*mp->mnt_op->vfs_getattr)(mp, vfa, context);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
+
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
- return(error);
+
+ error = (*mp->mnt_op->vfs_getattr)(mp, vfa, ctx);
+
+ return error;
}
-int
-VFS_SETATTR(struct mount *mp, struct vfs_attr *vfa, vfs_context_t context)
+int
+VFS_SETATTR(mount_t mp, struct vfs_attr *vfa, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
-
- if ((mp == dead_mountp) || (mp->mnt_op->vfs_setattr == 0))
- return(ENOTSUP);
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_setattr == 0)) {
+ return ENOTSUP;
}
- thread_safe = mp->mnt_vtable->vfc_threadsafe;
-
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
- error = (*mp->mnt_op->vfs_setattr)(mp, vfa, context);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
+
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
- return(error);
+
+ error = (*mp->mnt_op->vfs_setattr)(mp, vfa, ctx);
+
+ return error;
}
-int
-VFS_SYNC(struct mount *mp, int flags, vfs_context_t context)
+int
+VFS_SYNC(mount_t mp, int flags, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
- if ((mp == dead_mountp) || (mp->mnt_op->vfs_sync == 0))
- return(ENOTSUP);
-
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_sync == 0)) {
+ return ENOTSUP;
}
- thread_safe = mp->mnt_vtable->vfc_threadsafe;
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
- error = (*mp->mnt_op->vfs_sync)(mp, flags, context);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
- return(error);
+
+ error = (*mp->mnt_op->vfs_sync)(mp, flags, ctx);
+
+ return error;
}
-int
-VFS_VGET(struct mount * mp, ino64_t ino, struct vnode **vpp, vfs_context_t context)
+int
+VFS_VGET(mount_t mp, ino64_t ino, struct vnode **vpp, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
- if ((mp == dead_mountp) || (mp->mnt_op->vfs_vget == 0))
- return(ENOTSUP);
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_vget == 0)) {
+ return ENOTSUP;
+ }
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
- thread_safe = mp->mnt_vtable->vfc_threadsafe;
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
+ error = (*mp->mnt_op->vfs_vget)(mp, ino, vpp, ctx);
+
+ return error;
+}
+
+int
+VFS_FHTOVP(mount_t mp, int fhlen, unsigned char *fhp, vnode_t *vpp, vfs_context_t ctx)
+{
+ int error;
+
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_fhtovp == 0)) {
+ return ENOTSUP;
}
- error = (*mp->mnt_op->vfs_vget)(mp, ino, vpp, context);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
+
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
- return(error);
+
+ error = (*mp->mnt_op->vfs_fhtovp)(mp, fhlen, fhp, vpp, ctx);
+
+ return error;
}
-int
-VFS_FHTOVP(struct mount * mp, int fhlen, unsigned char * fhp, vnode_t * vpp, vfs_context_t context)
+int
+VFS_VPTOFH(struct vnode *vp, int *fhlenp, unsigned char *fhp, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
- if ((mp == dead_mountp) || (mp->mnt_op->vfs_fhtovp == 0))
- return(ENOTSUP);
-
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if ((vp->v_mount == dead_mountp) || (vp->v_mount->mnt_op->vfs_vptofh == 0)) {
+ return ENOTSUP;
}
- thread_safe = mp->mnt_vtable->vfc_threadsafe;
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
- error = (*mp->mnt_op->vfs_fhtovp)(mp, fhlen, fhp, vpp, context);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
+
+ error = (*vp->v_mount->mnt_op->vfs_vptofh)(vp, fhlenp, fhp, ctx);
+
+ return error;
+}
+
+int
+VFS_IOCTL(struct mount *mp, u_long command, caddr_t data,
+ int flags, vfs_context_t context)
+{
+ if (mp == dead_mountp || !mp->mnt_op->vfs_ioctl) {
+ return ENOTSUP;
}
- return(error);
+
+ return mp->mnt_op->vfs_ioctl(mp, command, data, flags,
+ context ?: vfs_context_current());
}
-int
-VFS_VPTOFH(struct vnode * vp, int *fhlenp, unsigned char * fhp, vfs_context_t context)
+int
+VFS_VGET_SNAPDIR(mount_t mp, vnode_t *vpp, vfs_context_t ctx)
{
int error;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
- if ((vp->v_mount == dead_mountp) || (vp->v_mount->mnt_op->vfs_vptofh == 0))
- return(ENOTSUP);
-
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if ((mp == dead_mountp) || (mp->mnt_op->vfs_vget_snapdir == 0)) {
+ return ENOTSUP;
}
- thread_safe = THREAD_SAFE_FS(vp);
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
- error = (*vp->v_mount->mnt_op->vfs_vptofh)(vp, fhlenp, fhp, context);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
- return(error);
+
+ error = (*mp->mnt_op->vfs_vget_snapdir)(mp, vpp, ctx);
+
+ return error;
}
+/* returns the cached throttle mask for the mount_t */
+uint64_t
+vfs_throttle_mask(mount_t mp)
+{
+ return mp->mnt_throttle_mask;
+}
/* returns a copy of vfs type name for the mount_t */
-void
-vfs_name(mount_t mp, char * buffer)
+void
+vfs_name(mount_t mp, char *buffer)
{
- strncpy(buffer, mp->mnt_vtable->vfc_name, MFSNAMELEN);
+ strncpy(buffer, mp->mnt_vtable->vfc_name, MFSNAMELEN);
}
/* returns vfs type number for the mount_t */
-int
+int
vfs_typenum(mount_t mp)
{
- return(mp->mnt_vtable->vfc_typenum);
+ return mp->mnt_vtable->vfc_typenum;
+}
+
+/* Safe to cast to "struct label*"; returns "void*" to limit dependence of mount.h on security headers. */
+void*
+vfs_mntlabel(mount_t mp)
+{
+ return (void*)mp->mnt_mntlabel;
}
+uint64_t
+vfs_mount_id(mount_t mp)
+{
+ return mp->mnt_mount_id;
+}
/* returns command modifier flags of mount_t ie. MNT_CMDFLAGS */
-uint64_t
+uint64_t
vfs_flags(mount_t mp)
{
- return((uint64_t)(mp->mnt_flag & (MNT_CMDFLAGS | MNT_VISFLAGMASK)));
+ return (uint64_t)(mp->mnt_flag & (MNT_CMDFLAGS | MNT_VISFLAGMASK));
}
/* set any of the command modifier flags(MNT_CMDFLAGS) in mount_t */
-void
+void
vfs_setflags(mount_t mp, uint64_t flags)
{
- uint32_t lflags = (uint32_t)(flags & (MNT_CMDFLAGS | MNT_VISFLAGMASK));
+ uint32_t lflags = (uint32_t)(flags & (MNT_CMDFLAGS | MNT_VISFLAGMASK));
+ mount_lock(mp);
mp->mnt_flag |= lflags;
+ mount_unlock(mp);
}
/* clear any of the command modifier flags(MNT_CMDFLAGS) in mount_t */
-void
-vfs_clearflags(mount_t mp , uint64_t flags)
+void
+vfs_clearflags(mount_t mp, uint64_t flags)
{
- uint32_t lflags = (uint32_t)(flags & (MNT_CMDFLAGS | MNT_VISFLAGMASK));
+ uint32_t lflags = (uint32_t)(flags & (MNT_CMDFLAGS | MNT_VISFLAGMASK));
+ mount_lock(mp);
mp->mnt_flag &= ~lflags;
+ mount_unlock(mp);
}
/* Is the mount_t ronly and upgrade read/write requested? */
-int
+int
vfs_iswriteupgrade(mount_t mp) /* ronly && MNTK_WANTRDWR */
{
- return ((mp->mnt_flag & MNT_RDONLY) && (mp->mnt_kern_flag & MNTK_WANTRDWR));
+ return (mp->mnt_flag & MNT_RDONLY) && (mp->mnt_kern_flag & MNTK_WANTRDWR);
}
/* Is the mount_t mounted ronly */
-int
+int
vfs_isrdonly(mount_t mp)
{
- return (mp->mnt_flag & MNT_RDONLY);
+ return mp->mnt_flag & MNT_RDONLY;
}
/* Is the mount_t mounted for filesystem synchronous writes? */
-int
+int
vfs_issynchronous(mount_t mp)
{
- return (mp->mnt_flag & MNT_SYNCHRONOUS);
+ return mp->mnt_flag & MNT_SYNCHRONOUS;
}
/* Is the mount_t mounted read/write? */
-int
+int
vfs_isrdwr(mount_t mp)
{
- return ((mp->mnt_flag & MNT_RDONLY) == 0);
+ return (mp->mnt_flag & MNT_RDONLY) == 0;
}
/* Is mount_t marked for update (ie MNT_UPDATE) */
-int
-vfs_isupdate(mount_t mp)
+int
+vfs_isupdate(mount_t mp)
{
- return (mp->mnt_flag & MNT_UPDATE);
+ return mp->mnt_flag & MNT_UPDATE;
}
/* Is mount_t marked for reload (ie MNT_RELOAD) */
-int
+int
vfs_isreload(mount_t mp)
{
- return ((mp->mnt_flag & MNT_UPDATE) && (mp->mnt_flag & MNT_RELOAD));
+ return (mp->mnt_flag & MNT_UPDATE) && (mp->mnt_flag & MNT_RELOAD);
}
-/* Is mount_t marked for reload (ie MNT_FORCE) */
-int
+/* Is mount_t marked for forced unmount (ie MNT_FORCE or MNTK_FRCUNMOUNT) */
+int
vfs_isforce(mount_t mp)
{
- if ((mp->mnt_flag & MNT_FORCE) || (mp->mnt_kern_flag & MNTK_FRCUNMOUNT))
- return(1);
- else
- return(0);
+ if (mp->mnt_lflag & MNT_LFORCE) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+int
+vfs_isunmount(mount_t mp)
+{
+ if ((mp->mnt_lflag & MNT_LUNMOUNT)) {
+ return 1;
+ } else {
+ return 0;
+ }
}
int
vfs_64bitready(mount_t mp)
{
- if ((mp->mnt_vtable->vfc_64bitready))
- return(1);
- else
- return(0);
+ if ((mp->mnt_vtable->vfc_vfsflags & VFC_VFS64BITREADY)) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+
+int
+vfs_authcache_ttl(mount_t mp)
+{
+ if ((mp->mnt_kern_flag & (MNTK_AUTH_OPAQUE | MNTK_AUTH_CACHE_TTL))) {
+ return mp->mnt_authcache_ttl;
+ } else {
+ return CACHED_RIGHT_INFINITE_TTL;
+ }
+}
+
+void
+vfs_setauthcache_ttl(mount_t mp, int ttl)
+{
+ mount_lock(mp);
+ mp->mnt_kern_flag |= MNTK_AUTH_CACHE_TTL;
+ mp->mnt_authcache_ttl = ttl;
+ mount_unlock(mp);
+}
+
+void
+vfs_clearauthcache_ttl(mount_t mp)
+{
+ mount_lock(mp);
+ mp->mnt_kern_flag &= ~MNTK_AUTH_CACHE_TTL;
+ /*
+ * back to the default TTL value in case
+ * MNTK_AUTH_OPAQUE is set on this mount
+ */
+ mp->mnt_authcache_ttl = CACHED_LOOKUP_RIGHT_TTL;
+ mount_unlock(mp);
}
int
vfs_authopaque(mount_t mp)
{
- if ((mp->mnt_kern_flag & MNTK_AUTH_OPAQUE))
- return(1);
- else
- return(0);
+ if ((mp->mnt_kern_flag & MNTK_AUTH_OPAQUE)) {
+ return 1;
+ } else {
+ return 0;
+ }
}
-int
+int
vfs_authopaqueaccess(mount_t mp)
{
- if ((mp->mnt_kern_flag & MNTK_AUTH_OPAQUE_ACCESS))
- return(1);
- else
- return(0);
+ if ((mp->mnt_kern_flag & MNTK_AUTH_OPAQUE_ACCESS)) {
+ return 1;
+ } else {
+ return 0;
+ }
}
void
mount_unlock(mp);
}
-void
+void
vfs_setauthopaqueaccess(mount_t mp)
{
mount_lock(mp);
mount_unlock(mp);
}
-void
+void
vfs_clearauthopaqueaccess(mount_t mp)
{
mount_lock(mp);
mount_unlock(mp);
}
+void
+vfs_setmntsystem(mount_t mp)
+{
+ mount_lock(mp);
+ mp->mnt_kern_flag |= MNTK_SYSTEM;
+ mount_unlock(mp);
+}
+
+void
+vfs_setmntsystemdata(mount_t mp)
+{
+ mount_lock(mp);
+ mp->mnt_kern_flag |= MNTK_SYSTEMDATA;
+ mount_unlock(mp);
+}
+
+void
+vfs_setmntswap(mount_t mp)
+{
+ mount_lock(mp);
+ mp->mnt_kern_flag |= (MNTK_SYSTEM | MNTK_SWAP_MOUNT);
+ mount_unlock(mp);
+}
+
void
vfs_clearextendedsecurity(mount_t mp)
{
mount_unlock(mp);
}
+void
+vfs_setnoswap(mount_t mp)
+{
+ mount_lock(mp);
+ mp->mnt_kern_flag |= MNTK_NOSWAP;
+ mount_unlock(mp);
+}
+
+void
+vfs_clearnoswap(mount_t mp)
+{
+ mount_lock(mp);
+ mp->mnt_kern_flag &= ~MNTK_NOSWAP;
+ mount_unlock(mp);
+}
+
int
vfs_extendedsecurity(mount_t mp)
{
- return(mp->mnt_kern_flag & MNTK_EXTENDED_SECURITY);
+ return mp->mnt_kern_flag & MNTK_EXTENDED_SECURITY;
}
/* returns the max size of short symlink in this mount_t */
-uint32_t
+uint32_t
vfs_maxsymlen(mount_t mp)
{
- return(mp->mnt_maxsymlinklen);
+ return mp->mnt_maxsymlinklen;
}
/* set max size of short symlink on mount_t */
-void
+void
vfs_setmaxsymlen(mount_t mp, uint32_t symlen)
{
mp->mnt_maxsymlinklen = symlen;
}
+boolean_t
+vfs_is_basesystem(mount_t mp)
+{
+ return ((mp->mnt_supl_kern_flag & MNTK_SUPL_BASESYSTEM) == 0) ? false : true;
+}
+
/* return a pointer to the RO vfs_statfs associated with mount_t */
-struct vfsstatfs *
+struct vfsstatfs *
vfs_statfs(mount_t mp)
{
- return(&mp->mnt_vfsstat);
+ return &mp->mnt_vfsstat;
}
int
vfs_getattr(mount_t mp, struct vfs_attr *vfa, vfs_context_t ctx)
{
- int error;
- char *vname;
+ int error;
- if ((error = VFS_GETATTR(mp, vfa, ctx)) != 0)
- return(error);
+ if ((error = VFS_GETATTR(mp, vfa, ctx)) != 0) {
+ return error;
+ }
/*
- * If we have a filesystem create time, use it to default some others.
- */
- if (VFSATTR_IS_SUPPORTED(vfa, f_create_time)) {
- if (VFSATTR_IS_ACTIVE(vfa, f_modify_time) && !VFSATTR_IS_SUPPORTED(vfa, f_modify_time))
- VFSATTR_RETURN(vfa, f_modify_time, vfa->f_create_time);
- }
+ * If we have a filesystem create time, use it to default some others.
+ */
+ if (VFSATTR_IS_SUPPORTED(vfa, f_create_time)) {
+ if (VFSATTR_IS_ACTIVE(vfa, f_modify_time) && !VFSATTR_IS_SUPPORTED(vfa, f_modify_time)) {
+ VFSATTR_RETURN(vfa, f_modify_time, vfa->f_create_time);
+ }
+ }
- return(0);
+ return 0;
}
int
vfs_setattr(mount_t mp, struct vfs_attr *vfa, vfs_context_t ctx)
{
int error;
-
- if (vfs_isrdonly(mp))
+
+ /*
+ * with a read-only system volume, we need to allow rename of the root volume
+ * even if it's read-only. Don't return EROFS here if setattr changes only
+ * the volume name
+ */
+ if (vfs_isrdonly(mp) &&
+ !((strcmp(mp->mnt_vfsstat.f_fstypename, "apfs") == 0) && (vfa->f_active == VFSATTR_f_vol_name))) {
return EROFS;
+ }
error = VFS_SETATTR(mp, vfa, ctx);
-
+
/*
* If we had alternate ways of setting vfs attributes, we'd
* fall back here.
void *
vfs_fsprivate(mount_t mp)
{
- return(mp->mnt_data);
+ return mp->mnt_data;
}
/* set the private data handle in mount_t */
-void
+void
vfs_setfsprivate(mount_t mp, void *mntdata)
{
+ mount_lock(mp);
mp->mnt_data = mntdata;
+ mount_unlock(mp);
}
+/* query whether the mount point supports native EAs */
+int
+vfs_nativexattrs(mount_t mp)
+{
+ return mp->mnt_kern_flag & MNTK_EXTENDED_ATTRS;
+}
/*
* return the block size of the underlying
* device associated with mount_t
*/
int
-vfs_devblocksize(mount_t mp) {
+vfs_devblocksize(mount_t mp)
+{
+ return mp->mnt_devblocksize;
+}
- return(mp->mnt_devblocksize);
+/*
+ * Returns vnode with an iocount that must be released with vnode_put()
+ */
+vnode_t
+vfs_vnodecovered(mount_t mp)
+{
+ vnode_t vp = mp->mnt_vnodecovered;
+ if ((vp == NULL) || (vnode_getwithref(vp) != 0)) {
+ return NULL;
+ } else {
+ return vp;
+ }
}
+/*
+ * Returns device vnode backing a mountpoint with an iocount (if valid vnode exists).
+ * The iocount must be released with vnode_put(). Note that this KPI is subtle
+ * with respect to the validity of using this device vnode for anything substantial
+ * (which is discouraged). If commands are sent to the device driver without
+ * taking proper steps to ensure that the device is still open, chaos may ensue.
+ * Similarly, this routine should only be called if there is some guarantee that
+ * the mount itself is still valid.
+ */
+vnode_t
+vfs_devvp(mount_t mp)
+{
+ vnode_t vp = mp->mnt_devvp;
+
+ if ((vp != NULLVP) && (vnode_get(vp) == 0)) {
+ return vp;
+ }
+
+ return NULLVP;
+}
/*
* return the io attributes associated with mount_t
void
vfs_ioattr(mount_t mp, struct vfsioattr *ioattrp)
{
- if (mp == NULL) {
- ioattrp->io_maxreadcnt = MAXPHYS;
+ ioattrp->io_reserved[0] = NULL;
+ ioattrp->io_reserved[1] = NULL;
+ if (mp == NULL) {
+ ioattrp->io_maxreadcnt = MAXPHYS;
ioattrp->io_maxwritecnt = MAXPHYS;
ioattrp->io_segreadcnt = 32;
ioattrp->io_segwritecnt = 32;
ioattrp->io_maxsegreadsize = MAXPHYS;
ioattrp->io_maxsegwritesize = MAXPHYS;
ioattrp->io_devblocksize = DEV_BSIZE;
+ ioattrp->io_flags = 0;
+ ioattrp->io_max_swappin_available = 0;
} else {
- ioattrp->io_maxreadcnt = mp->mnt_maxreadcnt;
+ ioattrp->io_maxreadcnt = mp->mnt_maxreadcnt;
ioattrp->io_maxwritecnt = mp->mnt_maxwritecnt;
ioattrp->io_segreadcnt = mp->mnt_segreadcnt;
ioattrp->io_segwritecnt = mp->mnt_segwritecnt;
ioattrp->io_maxsegreadsize = mp->mnt_maxsegreadsize;
ioattrp->io_maxsegwritesize = mp->mnt_maxsegwritesize;
ioattrp->io_devblocksize = mp->mnt_devblocksize;
+ ioattrp->io_flags = mp->mnt_ioflags;
+ ioattrp->io_max_swappin_available = mp->mnt_max_swappin_available;
}
- ioattrp->io_reserved[0] = 0;
- ioattrp->io_reserved[1] = 0;
- ioattrp->io_reserved[2] = 0;
}
/*
* set the IO attributes associated with mount_t
*/
-void
+void
vfs_setioattr(mount_t mp, struct vfsioattr * ioattrp)
{
- if (mp == NULL)
- return;
- mp->mnt_maxreadcnt = ioattrp->io_maxreadcnt;
+ if (mp == NULL) {
+ return;
+ }
+ mp->mnt_maxreadcnt = ioattrp->io_maxreadcnt;
mp->mnt_maxwritecnt = ioattrp->io_maxwritecnt;
mp->mnt_segreadcnt = ioattrp->io_segreadcnt;
mp->mnt_segwritecnt = ioattrp->io_segwritecnt;
mp->mnt_maxsegreadsize = ioattrp->io_maxsegreadsize;
mp->mnt_maxsegwritesize = ioattrp->io_maxsegwritesize;
mp->mnt_devblocksize = ioattrp->io_devblocksize;
+ mp->mnt_ioflags = ioattrp->io_flags;
+ mp->mnt_max_swappin_available = ioattrp->io_max_swappin_available;
}
-
+
/*
* Add a new filesystem into the kernel specified in passed in
- * vfstable structure. It fills in the vnode
+ * vfstable structure. It fills in the vnode
* dispatch vector that is to be passed to when vnodes are created.
* It returns a handle which is to be used to when the FS is to be removed
*/
typedef int (*PFI)(void *);
extern int vfs_opv_numops;
errno_t
-vfs_fsadd(struct vfs_fsentry *vfe, vfstable_t * handle)
-{
-#pragma unused(data)
- struct vfstable *newvfstbl = NULL;
- int i,j;
- int (***opv_desc_vector_p)(void *);
- int (**opv_desc_vector)(void *);
- struct vnodeopv_entry_desc *opve_descp;
+vfs_fsadd(struct vfs_fsentry *vfe, vfstable_t *handle)
+{
+ struct vfstable *newvfstbl = NULL;
+ int i, j;
+ int(***opv_desc_vector_p)(void *);
+ int(**opv_desc_vector)(void *);
+ const struct vnodeopv_entry_desc *opve_descp;
int desccount;
int descsize;
PFI *descptr;
* ordinarily be done as part of the system startup;
*/
- if (vfe == (struct vfs_fsentry *)0)
- return(EINVAL);
+ if (vfe == (struct vfs_fsentry *)0) {
+ return EINVAL;
+ }
desccount = vfe->vfe_vopcnt;
- if ((desccount <=0) || ((desccount > 5)) || (vfe->vfe_vfsops == (struct vfsops *)NULL)
- || (vfe->vfe_opvdescs == (struct vnodeopv_desc **)NULL))
- return(EINVAL);
+ if ((desccount <= 0) || ((desccount > 8)) || (vfe->vfe_vfsops == (struct vfsops *)NULL)
+ || (vfe->vfe_opvdescs == (struct vnodeopv_desc **)NULL)) {
+ return EINVAL;
+ }
+ /* Non-threadsafe filesystems are not supported */
+ if ((vfe->vfe_flags & (VFS_TBLTHREADSAFE | VFS_TBLFSNODELOCK)) == 0) {
+ return EINVAL;
+ }
- MALLOC(newvfstbl, void *, sizeof(struct vfstable), M_TEMP,
- M_WAITOK);
- bzero(newvfstbl, sizeof(struct vfstable));
+ newvfstbl = kheap_alloc(KHEAP_TEMP, sizeof(struct vfstable),
+ Z_WAITOK | Z_ZERO);
newvfstbl->vfc_vfsops = vfe->vfe_vfsops;
strncpy(&newvfstbl->vfc_name[0], vfe->vfe_fsname, MFSNAMELEN);
- if ((vfe->vfe_flags & VFS_TBLNOTYPENUM))
- newvfstbl->vfc_typenum = maxvfsconf++;
- else
+ if ((vfe->vfe_flags & VFS_TBLNOTYPENUM)) {
+ newvfstbl->vfc_typenum = maxvfstypenum++;
+ } else {
newvfstbl->vfc_typenum = vfe->vfe_fstypenum;
-
+ }
+
newvfstbl->vfc_refcount = 0;
newvfstbl->vfc_flags = 0;
newvfstbl->vfc_mountroot = NULL;
newvfstbl->vfc_next = NULL;
- newvfstbl->vfc_threadsafe = 0;
newvfstbl->vfc_vfsflags = 0;
- if (vfe->vfe_flags & VFS_TBL64BITREADY)
- newvfstbl->vfc_64bitready= 1;
- if (vfe->vfe_flags & VFS_TBLTHREADSAFE)
- newvfstbl->vfc_threadsafe= 1;
- if (vfe->vfe_flags & VFS_TBLFSNODELOCK)
- newvfstbl->vfc_threadsafe= 1;
- if ((vfe->vfe_flags & VFS_TBLLOCALVOL) == VFS_TBLLOCALVOL)
+ if (vfe->vfe_flags & VFS_TBL64BITREADY) {
+ newvfstbl->vfc_vfsflags |= VFC_VFS64BITREADY;
+ }
+ if (vfe->vfe_flags & VFS_TBLVNOP_PAGEINV2) {
+ newvfstbl->vfc_vfsflags |= VFC_VFSVNOP_PAGEINV2;
+ }
+ if (vfe->vfe_flags & VFS_TBLVNOP_PAGEOUTV2) {
+ newvfstbl->vfc_vfsflags |= VFC_VFSVNOP_PAGEOUTV2;
+ }
+ if ((vfe->vfe_flags & VFS_TBLLOCALVOL) == VFS_TBLLOCALVOL) {
newvfstbl->vfc_flags |= MNT_LOCAL;
- if (vfe->vfe_flags & VFS_TBLLOCALVOL)
+ }
+ if ((vfe->vfe_flags & VFS_TBLLOCALVOL) && (vfe->vfe_flags & VFS_TBLGENERICMNTARGS) == 0) {
newvfstbl->vfc_vfsflags |= VFC_VFSLOCALARGS;
- else
+ } else {
newvfstbl->vfc_vfsflags |= VFC_VFSGENERICARGS;
-
+ }
+
+ if (vfe->vfe_flags & VFS_TBLNATIVEXATTR) {
+ newvfstbl->vfc_vfsflags |= VFC_VFSNATIVEXATTR;
+ }
+ if (vfe->vfe_flags & VFS_TBLUNMOUNT_PREFLIGHT) {
+ newvfstbl->vfc_vfsflags |= VFC_VFSPREFLIGHT;
+ }
+ if (vfe->vfe_flags & VFS_TBLREADDIR_EXTENDED) {
+ newvfstbl->vfc_vfsflags |= VFC_VFSREADDIR_EXTENDED;
+ }
+ if (vfe->vfe_flags & VFS_TBLNOMACLABEL) {
+ newvfstbl->vfc_vfsflags |= VFC_VFSNOMACLABEL;
+ }
+ if (vfe->vfe_flags & VFS_TBLVNOP_NOUPDATEID_RENAME) {
+ newvfstbl->vfc_vfsflags |= VFC_VFSVNOP_NOUPDATEID_RENAME;
+ }
+ if (vfe->vfe_flags & VFS_TBLVNOP_SECLUDE_RENAME) {
+ newvfstbl->vfc_vfsflags |= VFC_VFSVNOP_SECLUDE_RENAME;
+ }
+ if (vfe->vfe_flags & VFS_TBLCANMOUNTROOT) {
+ newvfstbl->vfc_vfsflags |= VFC_VFSCANMOUNTROOT;
+ }
/*
* Allocate and init the vectors.
/* XXX - shouldn't be M_TEMP */
descsize = desccount * vfs_opv_numops * sizeof(PFI);
- MALLOC(descptr, PFI *, descsize,
- M_TEMP, M_WAITOK);
- bzero(descptr, descsize);
+ descptr = kheap_alloc(KHEAP_DEFAULT, descsize, Z_WAITOK | Z_ZERO);
newvfstbl->vfc_descptr = descptr;
newvfstbl->vfc_descsize = descsize;
-
- for (i= 0; i< desccount; i++ ) {
- opv_desc_vector_p = vfe->vfe_opvdescs[i]->opv_desc_vector_p;
- /*
- * Fill in the caller's pointer to the start of the i'th vector.
- * They'll need to supply it when calling vnode_create.
- */
- opv_desc_vector = descptr + i * vfs_opv_numops;
- *opv_desc_vector_p = opv_desc_vector;
+ newvfstbl->vfc_sysctl = NULL;
- for (j = 0; vfe->vfe_opvdescs[i]->opv_desc_ops[j].opve_op; j++) {
- opve_descp = &(vfe->vfe_opvdescs[i]->opv_desc_ops[j]);
-
- /*
- * Sanity check: is this operation listed
- * in the list of operations? We check this
- * by seeing if its offest is zero. Since
- * the default routine should always be listed
- * first, it should be the only one with a zero
- * offset. Any other operation with a zero
- * offset is probably not listed in
- * vfs_op_descs, and so is probably an error.
- *
- * A panic here means the layer programmer
- * has committed the all-too common bug
- * of adding a new operation to the layer's
- * list of vnode operations but
- * not adding the operation to the system-wide
- * list of supported operations.
- */
- if (opve_descp->opve_op->vdesc_offset == 0 &&
- opve_descp->opve_op->vdesc_offset != VOFFSET(vnop_default)) {
- printf("vfs_fsadd: operation %s not listed in %s.\n",
- opve_descp->opve_op->vdesc_name,
- "vfs_op_descs");
- panic("vfs_fsadd: bad operation");
- }
+ for (i = 0; i < desccount; i++) {
+ opv_desc_vector_p = vfe->vfe_opvdescs[i]->opv_desc_vector_p;
/*
- * Fill in this entry.
+ * Fill in the caller's pointer to the start of the i'th vector.
+ * They'll need to supply it when calling vnode_create.
*/
- opv_desc_vector[opve_descp->opve_op->vdesc_offset] =
- opve_descp->opve_impl;
- }
+ opv_desc_vector = descptr + i * vfs_opv_numops;
+ *opv_desc_vector_p = opv_desc_vector;
+
+ for (j = 0; vfe->vfe_opvdescs[i]->opv_desc_ops[j].opve_op; j++) {
+ opve_descp = &(vfe->vfe_opvdescs[i]->opv_desc_ops[j]);
+ /* Silently skip known-disabled operations */
+ if (opve_descp->opve_op->vdesc_flags & VDESC_DISABLED) {
+ printf("vfs_fsadd: Ignoring reference in %p to disabled operation %s.\n",
+ vfe->vfe_opvdescs[i], opve_descp->opve_op->vdesc_name);
+ continue;
+ }
+
+ /*
+ * Sanity check: is this operation listed
+ * in the list of operations? We check this
+ * by seeing if its offset is zero. Since
+ * the default routine should always be listed
+ * first, it should be the only one with a zero
+ * offset. Any other operation with a zero
+ * offset is probably not listed in
+ * vfs_op_descs, and so is probably an error.
+ *
+ * A panic here means the layer programmer
+ * has committed the all-too common bug
+ * of adding a new operation to the layer's
+ * list of vnode operations but
+ * not adding the operation to the system-wide
+ * list of supported operations.
+ */
+ if (opve_descp->opve_op->vdesc_offset == 0 &&
+ opve_descp->opve_op != VDESC(vnop_default)) {
+ printf("vfs_fsadd: operation %s not listed in %s.\n",
+ opve_descp->opve_op->vdesc_name,
+ "vfs_op_descs");
+ panic("vfs_fsadd: bad operation");
+ }
+ /*
+ * Fill in this entry.
+ */
+ opv_desc_vector[opve_descp->opve_op->vdesc_offset] =
+ opve_descp->opve_impl;
+ }
- /*
- * Finally, go back and replace unfilled routines
- * with their default. (Sigh, an O(n^3) algorithm. I
- * could make it better, but that'd be work, and n is small.)
- */
- opv_desc_vector_p = vfe->vfe_opvdescs[i]->opv_desc_vector_p;
- /*
- * Force every operations vector to have a default routine.
- */
- opv_desc_vector = *opv_desc_vector_p;
- if (opv_desc_vector[VOFFSET(vnop_default)] == NULL)
- panic("vfs_fsadd: operation vector without default routine.");
- for (j = 0; j < vfs_opv_numops; j++)
- if (opv_desc_vector[j] == NULL)
- opv_desc_vector[j] =
- opv_desc_vector[VOFFSET(vnop_default)];
+ /*
+ * Finally, go back and replace unfilled routines
+ * with their default. (Sigh, an O(n^3) algorithm. I
+ * could make it better, but that'd be work, and n is small.)
+ */
+ opv_desc_vector_p = vfe->vfe_opvdescs[i]->opv_desc_vector_p;
+ /*
+ * Force every operations vector to have a default routine.
+ */
+ opv_desc_vector = *opv_desc_vector_p;
+ if (opv_desc_vector[VOFFSET(vnop_default)] == NULL) {
+ panic("vfs_fsadd: operation vector without default routine.");
+ }
+ for (j = 0; j < vfs_opv_numops; j++) {
+ if (opv_desc_vector[j] == NULL) {
+ opv_desc_vector[j] =
+ opv_desc_vector[VOFFSET(vnop_default)];
+ }
+ }
} /* end of each vnodeopv_desc parsing */
-
+
*handle = vfstable_add(newvfstbl);
- if (newvfstbl->vfc_typenum <= maxvfsconf )
- maxvfsconf = newvfstbl->vfc_typenum + 1;
- numused_vfsslots++;
+ if (newvfstbl->vfc_typenum <= maxvfstypenum) {
+ maxvfstypenum = newvfstbl->vfc_typenum + 1;
+ }
+
+ if (newvfstbl->vfc_vfsops->vfs_init) {
+ struct vfsconf vfsc;
+ bzero(&vfsc, sizeof(struct vfsconf));
+ vfsc.vfc_reserved1 = 0;
+ bcopy((*handle)->vfc_name, vfsc.vfc_name, sizeof(vfsc.vfc_name));
+ vfsc.vfc_typenum = (*handle)->vfc_typenum;
+ vfsc.vfc_refcount = (*handle)->vfc_refcount;
+ vfsc.vfc_flags = (*handle)->vfc_flags;
+ vfsc.vfc_reserved2 = 0;
+ vfsc.vfc_reserved3 = 0;
- if (newvfstbl->vfc_vfsops->vfs_init)
- (*newvfstbl->vfc_vfsops->vfs_init)((struct vfsconf *)handle);
+ (*newvfstbl->vfc_vfsops->vfs_init)(&vfsc);
+ }
- FREE(newvfstbl, M_TEMP);
+ kheap_free(KHEAP_TEMP, newvfstbl, sizeof(struct vfstable));
- return(0);
+ return 0;
}
/*
* Removes the filesystem from kernel.
- * The argument passed in is the handle that was given when
+ * The argument passed in is the handle that was given when
* file system was added
*/
-errno_t
-vfs_fsremove(vfstable_t handle)
+errno_t
+vfs_fsremove(vfstable_t handle)
{
struct vfstable * vfstbl = (struct vfstable *)handle;
void *old_desc = NULL;
+ size_t descsize = 0;
errno_t err;
-
+
/* Preflight check for any mounts */
mount_list_lock();
- if ( vfstbl->vfc_refcount != 0 ) {
+ if (vfstbl->vfc_refcount != 0) {
mount_list_unlock();
return EBUSY;
}
- mount_list_unlock();
-
+
/*
* save the old descriptor; the free cannot occur unconditionally,
* since vfstable_del() may fail.
*/
if (vfstbl->vfc_descptr && vfstbl->vfc_descsize) {
old_desc = vfstbl->vfc_descptr;
+ descsize = vfstbl->vfc_descsize;
}
err = vfstable_del(vfstbl);
+ mount_list_unlock();
+
/* free the descriptor if the delete was successful */
- if (err == 0 && old_desc) {
- FREE(old_desc, M_TEMP);
+ if (err == 0) {
+ kheap_free(KHEAP_DEFAULT, old_desc, descsize);
}
- return(err);
+ return err;
+}
+
+void
+vfs_setowner(mount_t mp, uid_t uid, gid_t gid)
+{
+ mp->mnt_fsowner = uid;
+ mp->mnt_fsgroup = gid;
}
/*
- * This returns a reference to mount_t
- * which should be dropped using vfs_mountrele().
- * Not doing so will leak a mountpoint
- * and associated data structures.
+ * Callers should be careful how they use this; accessing
+ * mnt_last_write_completed_timestamp is not thread-safe. Writing to
+ * it isn't either. Point is: be prepared to deal with strange values
+ * being returned.
*/
-errno_t
-vfs_mountref(__unused mount_t mp ) /* gives a reference */
+uint64_t
+vfs_idle_time(mount_t mp)
{
- return(0);
+ if (mp->mnt_pending_write_size) {
+ return 0;
+ }
+
+ struct timeval now;
+
+ microuptime(&now);
+
+ return (now.tv_sec
+ - mp->mnt_last_write_completed_timestamp.tv_sec) * 1000000
+ + now.tv_usec - mp->mnt_last_write_completed_timestamp.tv_usec;
}
-/* This drops the reference on mount_t that was acquired */
-errno_t
-vfs_mountrele(__unused mount_t mp ) /* drops reference */
+int
+vfs_context_pid(vfs_context_t ctx)
{
- return(0);
+ return proc_pid(vfs_context_proc(ctx));
}
int
-vfs_context_pid(vfs_context_t context)
+vfs_context_suser(vfs_context_t ctx)
{
- return (context->vc_proc->p_pid);
+ return suser(ctx->vc_ucred, NULL);
}
+/*
+ * Return bit field of signals posted to all threads in the context's process.
+ *
+ * XXX Signals should be tied to threads, not processes, for most uses of this
+ * XXX call.
+ */
int
-vfs_context_suser(vfs_context_t context)
+vfs_context_issignal(vfs_context_t ctx, sigset_t mask)
{
- return (suser(context->vc_ucred, 0));
+ proc_t p = vfs_context_proc(ctx);
+ if (p) {
+ return proc_pendingsignals(p, mask);
+ }
+ return 0;
}
+
int
-vfs_context_issignal(vfs_context_t context, sigset_t mask)
+vfs_context_is64bit(vfs_context_t ctx)
{
- if (context->vc_proc)
- return(proc_pendingsignals(context->vc_proc, mask));
- return(0);
+ proc_t proc = vfs_context_proc(ctx);
+
+ if (proc) {
+ return proc_is64bit(proc);
+ }
+ return 0;
}
-int
-vfs_context_is64bit(vfs_context_t context)
+boolean_t
+vfs_context_can_resolve_triggers(vfs_context_t ctx)
{
- if (context->vc_proc)
- return(proc_is64bit(context->vc_proc));
- return(0);
+ proc_t proc = vfs_context_proc(ctx);
+
+ if (proc) {
+ if (proc->p_vfs_iopolicy &
+ P_VFS_IOPOLICY_TRIGGER_RESOLVE_DISABLE) {
+ return false;
+ }
+ return true;
+ }
+ return false;
}
+/*
+ * vfs_context_proc
+ *
+ * Description: Given a vfs_context_t, return the proc_t associated with it.
+ *
+ * Parameters: vfs_context_t The context to use
+ *
+ * Returns: proc_t The process for this context
+ *
+ * Notes: This function will return the current_proc() if any of the
+ * following conditions are true:
+ *
+ * o The supplied context pointer is NULL
+ * o There is no Mach thread associated with the context
+ * o There is no Mach task associated with the Mach thread
+ * o There is no proc_t associated with the Mach task
+ * o The proc_t has no per process open file table
+ * o The proc_t is post-vfork()
+ *
+ * This causes this function to return a value matching as
+ * closely as possible the previous behaviour, while at the
+ * same time avoiding the task lending that results from vfork()
+ */
proc_t
-vfs_context_proc(vfs_context_t context)
+vfs_context_proc(vfs_context_t ctx)
+{
+ proc_t proc = NULL;
+
+ if (ctx != NULL && ctx->vc_thread != NULL) {
+ proc = (proc_t)get_bsdthreadtask_info(ctx->vc_thread);
+ }
+ if (proc != NULL && (proc->p_fd == NULL || (proc->p_lflag & P_LVFORK))) {
+ proc = NULL;
+ }
+
+ return proc == NULL ? current_proc() : proc;
+}
+
+/*
+ * vfs_context_get_special_port
+ *
+ * Description: Return the requested special port from the task associated
+ * with the given context.
+ *
+ * Parameters: vfs_context_t The context to use
+ * int Index of special port
+ * ipc_port_t * Pointer to returned port
+ *
+ * Returns: kern_return_t see task_get_special_port()
+ */
+kern_return_t
+vfs_context_get_special_port(vfs_context_t ctx, int which, ipc_port_t *portp)
+{
+ task_t task = NULL;
+
+ if (ctx != NULL && ctx->vc_thread != NULL) {
+ task = get_threadtask(ctx->vc_thread);
+ }
+
+ return task_get_special_port(task, which, portp);
+}
+
+/*
+ * vfs_context_set_special_port
+ *
+ * Description: Set the requested special port in the task associated
+ * with the given context.
+ *
+ * Parameters: vfs_context_t The context to use
+ * int Index of special port
+ * ipc_port_t New special port
+ *
+ * Returns: kern_return_t see task_set_special_port_internal()
+ */
+kern_return_t
+vfs_context_set_special_port(vfs_context_t ctx, int which, ipc_port_t port)
+{
+ task_t task = NULL;
+
+ if (ctx != NULL && ctx->vc_thread != NULL) {
+ task = get_threadtask(ctx->vc_thread);
+ }
+
+ return task_set_special_port_internal(task, which, port);
+}
+
+/*
+ * vfs_context_thread
+ *
+ * Description: Return the Mach thread associated with a vfs_context_t
+ *
+ * Parameters: vfs_context_t The context to use
+ *
+ * Returns: thread_t The thread for this context, or
+ * NULL, if there is not one.
+ *
+ * Notes: NULL thread_t's are legal, but discouraged. They occur only
+ * as a result of a static vfs_context_t declaration in a function
+ * and will result in this function returning NULL.
+ *
+ * This is intentional; this function should NOT return the
+ * current_thread() in this case.
+ */
+thread_t
+vfs_context_thread(vfs_context_t ctx)
+{
+ return ctx->vc_thread;
+}
+
+
+/*
+ * vfs_context_cwd
+ *
+ * Description: Returns a reference on the vnode for the current working
+ * directory for the supplied context
+ *
+ * Parameters: vfs_context_t The context to use
+ *
+ * Returns: vnode_t The current working directory
+ * for this context
+ *
+ * Notes: The function first attempts to obtain the current directory
+ * from the thread, and if it is not present there, falls back
+ * to obtaining it from the process instead. If it can't be
+ * obtained from either place, we return NULLVP.
+ */
+vnode_t
+vfs_context_cwd(vfs_context_t ctx)
{
- return (context->vc_proc);
+ vnode_t cwd = NULLVP;
+
+ if (ctx != NULL && ctx->vc_thread != NULL) {
+ uthread_t uth = get_bsdthread_info(ctx->vc_thread);
+ proc_t proc;
+
+ /*
+ * Get the cwd from the thread; if there isn't one, get it
+ * from the process, instead.
+ */
+ if ((cwd = uth->uu_cdir) == NULLVP &&
+ (proc = (proc_t)get_bsdthreadtask_info(ctx->vc_thread)) != NULL &&
+ proc->p_fd != NULL) {
+ cwd = proc->p_fd->fd_cdir;
+ }
+ }
+
+ return cwd;
}
+/*
+ * vfs_context_create
+ *
+ * Description: Allocate and initialize a new context.
+ *
+ * Parameters: vfs_context_t: Context to copy, or NULL for new
+ *
+ * Returns: Pointer to new context
+ *
+ * Notes: Copy cred and thread from argument, if available; else
+ * initialize with current thread and new cred. Returns
+ * with a reference held on the credential.
+ */
vfs_context_t
-vfs_context_create(vfs_context_t context)
+vfs_context_create(vfs_context_t ctx)
{
- struct vfs_context * newcontext;
+ vfs_context_t newcontext;
- newcontext = (struct vfs_context *)kalloc(sizeof(struct vfs_context));
+ newcontext = zalloc_flags(ZV_VFS_CONTEXT, Z_WAITOK | Z_ZERO);
if (newcontext) {
- if (context) {
- newcontext->vc_proc = context->vc_proc;
- newcontext->vc_ucred = context->vc_ucred;
+ kauth_cred_t safecred;
+ if (ctx) {
+ newcontext->vc_thread = ctx->vc_thread;
+ safecred = ctx->vc_ucred;
} else {
- newcontext->vc_proc = proc_self();
- newcontext->vc_ucred = kauth_cred_get();
+ newcontext->vc_thread = current_thread();
+ safecred = kauth_cred_get();
+ }
+ if (IS_VALID_CRED(safecred)) {
+ kauth_cred_ref(safecred);
+ }
+ newcontext->vc_ucred = safecred;
+ return newcontext;
+ }
+ return NULL;
+}
+
+
+vfs_context_t
+vfs_context_current(void)
+{
+ vfs_context_t ctx = NULL;
+ uthread_t ut = (uthread_t)get_bsdthread_info(current_thread());
+
+ if (ut != NULL) {
+ if (ut->uu_context.vc_ucred != NULL) {
+ ctx = &ut->uu_context;
}
- return(newcontext);
}
- return((vfs_context_t)0);
+
+ return ctx == NULL ? vfs_context_kernel() : ctx;
+}
+
+
+/*
+ * XXX Do not ask
+ *
+ * Dangerous hack - adopt the first kernel thread as the current thread, to
+ * get to the vfs_context_t in the uthread associated with a kernel thread.
+ * This is used by UDF to make the call into IOCDMediaBSDClient,
+ * IOBDMediaBSDClient, and IODVDMediaBSDClient to determine whether the
+ * ioctl() is being called from kernel or user space (and all this because
+ * we do not pass threads into our ioctl()'s, instead of processes).
+ *
+ * This is also used by imageboot_setup(), called early from bsd_init() after
+ * kernproc has been given a credential.
+ *
+ */
+static struct vfs_context kerncontext;
+vfs_context_t
+vfs_context_kernel(void)
+{
+ return &kerncontext;
+}
+
+/*
+ * Called early in bsd_init() when kernproc sets its thread and cred context.
+ */
+void
+vfs_set_context_kernel(vfs_context_t ctx)
+{
+ kerncontext = *ctx;
}
int
-vfs_context_rele(vfs_context_t context)
+vfs_context_rele(vfs_context_t ctx)
{
- if (context)
- kfree(context, sizeof(struct vfs_context));
- return(0);
+ if (ctx) {
+ if (IS_VALID_CRED(ctx->vc_ucred)) {
+ kauth_cred_unref(&ctx->vc_ucred);
+ }
+ zfree(ZV_VFS_CONTEXT, ctx);
+ }
+ return 0;
}
-ucred_t
-vfs_context_ucred(vfs_context_t context)
+kauth_cred_t
+vfs_context_ucred(vfs_context_t ctx)
{
- return (context->vc_ucred);
+ return ctx->vc_ucred;
}
/*
* Return true if the context is owned by the superuser.
*/
int
-vfs_context_issuser(vfs_context_t context)
+vfs_context_issuser(vfs_context_t ctx)
+{
+ return kauth_cred_issuser(vfs_context_ucred(ctx));
+}
+
+int
+vfs_context_iskernel(vfs_context_t ctx)
+{
+ return ctx == &kerncontext;
+}
+
+/*
+ * Given a context, for all fields of vfs_context_t which
+ * are not held with a reference, set those fields to the
+ * values for the current execution context. Currently, this
+ * just means the vc_thread.
+ *
+ * Returns: 0 for success, nonzero for failure
+ *
+ * The intended use is:
+ * 1. vfs_context_create() gets the caller a context
+ * 2. vfs_context_bind() sets the unrefcounted data
+ * 3. vfs_context_rele() releases the context
+ *
+ */
+int
+vfs_context_bind(vfs_context_t ctx)
{
- return(context->vc_ucred->cr_uid == 0);
+ ctx->vc_thread = current_thread();
+ return 0;
}
+int
+vfs_isswapmount(mount_t mnt)
+{
+ return mnt && ISSET(mnt->mnt_kern_flag, MNTK_SWAP_MOUNT) ? 1 : 0;
+}
/* XXXXXXXXXXXXXX VNODE KAPIS XXXXXXXXXXXXXXXXXXXXXXXXX */
-
+
/*
* Convert between vnode types and inode formats (since POSIX.1
* defines mode word of stat structure in terms of inode formats).
*/
-enum vtype
+enum vtype
vnode_iftovt(int mode)
{
- return(iftovt_tab[((mode) & S_IFMT) >> 12]);
+ return iftovt_tab[((mode) & S_IFMT) >> 12];
}
-int
+int
vnode_vttoif(enum vtype indx)
{
- return(vttoif_tab[(int)(indx)]);
+ return vttoif_tab[(int)(indx)];
}
-int
+int
vnode_makeimode(int indx, int mode)
{
return (int)(VTTOIF(indx) | (mode));
* vnode manipulation functions.
*/
-/* returns system root vnode reference; It should be dropped using vrele() */
-vnode_t
+/* returns system root vnode iocount; It should be released using vnode_put() */
+vnode_t
vfs_rootvnode(void)
{
int error;
+ lck_rw_lock_shared(rootvnode_rw_lock);
error = vnode_get(rootvnode);
- if (error)
- return ((vnode_t)0);
- else
+ lck_rw_unlock_shared(rootvnode_rw_lock);
+ if (error) {
+ return (vnode_t)0;
+ } else {
return rootvnode;
-}
+ }
+}
-uint32_t
+uint32_t
vnode_vid(vnode_t vp)
{
- return ((uint32_t)(vp->v_id));
-}
+ return (uint32_t)(vp->v_id);
+}
-/* returns a mount reference; drop it with vfs_mountrelease() */
-mount_t
+mount_t
vnode_mount(vnode_t vp)
{
- return (vp->v_mount);
+ return vp->v_mount;
+}
+
+#if CONFIG_IOSCHED
+vnode_t
+vnode_mountdevvp(vnode_t vp)
+{
+ if (vp->v_mount) {
+ return vp->v_mount->mnt_devvp;
+ } else {
+ return (vnode_t)0;
+ }
+}
+#endif
+
+boolean_t
+vnode_isonexternalstorage(vnode_t vp)
+{
+ if (vp) {
+ if (vp->v_mount) {
+ if (vp->v_mount->mnt_ioflags & MNT_IOFLAGS_PERIPHERAL_DRIVE) {
+ return TRUE;
+ }
+ }
+ }
+ return FALSE;
}
-/* returns a mount reference iff vnode_t is a dir and is a mount point */
-mount_t
+mount_t
vnode_mountedhere(vnode_t vp)
{
mount_t mp;
if ((vp->v_type == VDIR) && ((mp = vp->v_mountedhere) != NULL) &&
- (mp->mnt_vnodecovered == vp))
- return (mp);
- else
+ (mp->mnt_vnodecovered == vp)) {
+ return mp;
+ } else {
return (mount_t)NULL;
+ }
}
/* returns vnode type of vnode_t */
-enum vtype
+enum vtype
vnode_vtype(vnode_t vp)
{
- return (vp->v_type);
+ return vp->v_type;
}
/* returns FS specific node saved in vnode */
-void *
+void *
vnode_fsnode(vnode_t vp)
{
- return (vp->v_data);
+ return vp->v_data;
}
-void
+void
vnode_clearfsnode(vnode_t vp)
{
- vp->v_data = 0;
+ vp->v_data = NULL;
}
-dev_t
+dev_t
vnode_specrdev(vnode_t vp)
{
- return(vp->v_rdev);
+ return vp->v_rdev;
}
/* Accessor functions */
/* is vnode_t a root vnode */
-int
+int
vnode_isvroot(vnode_t vp)
{
- return ((vp->v_flag & VROOT)? 1 : 0);
+ return (vp->v_flag & VROOT)? 1 : 0;
}
/* is vnode_t a system vnode */
-int
+int
vnode_issystem(vnode_t vp)
{
- return ((vp->v_flag & VSYSTEM)? 1 : 0);
+ return (vp->v_flag & VSYSTEM)? 1 : 0;
+}
+
+/* is vnode_t a swap file vnode */
+int
+vnode_isswap(vnode_t vp)
+{
+ return (vp->v_flag & VSWAP)? 1 : 0;
+}
+
+/* is vnode_t a tty */
+int
+vnode_istty(vnode_t vp)
+{
+ return (vp->v_flag & VISTTY) ? 1 : 0;
}
/* if vnode_t mount operation in progress */
-int
+int
vnode_ismount(vnode_t vp)
{
- return ((vp->v_flag & VMOUNT)? 1 : 0);
+ return (vp->v_flag & VMOUNT)? 1 : 0;
}
/* is this vnode under recyle now */
-int
+int
vnode_isrecycled(vnode_t vp)
{
int ret;
- vnode_lock(vp);
- ret = (vp->v_lflag & (VL_TERMINATE|VL_DEAD))? 1 : 0;
+ vnode_lock_spin(vp);
+ ret = (vp->v_lflag & (VL_TERMINATE | VL_DEAD))? 1 : 0;
vnode_unlock(vp);
- return(ret);
+ return ret;
+}
+
+/* vnode was created by background task requesting rapid aging
+ * and has not since been referenced by a normal task */
+int
+vnode_israge(vnode_t vp)
+{
+ return (vp->v_flag & VRAGE)? 1 : 0;
+}
+
+int
+vnode_needssnapshots(vnode_t vp)
+{
+ return (vp->v_flag & VNEEDSSNAPSHOT)? 1 : 0;
+}
+
+
+/* Check the process/thread to see if we should skip atime updates */
+int
+vfs_ctx_skipatime(vfs_context_t ctx)
+{
+ struct uthread *ut;
+ proc_t proc;
+ thread_t thr;
+
+ proc = vfs_context_proc(ctx);
+ thr = vfs_context_thread(ctx);
+
+ /* Validate pointers in case we were invoked via a kernel context */
+ if (thr && proc) {
+ ut = get_bsdthread_info(thr);
+
+ if (proc->p_lflag & P_LRAGE_VNODES) {
+ return 1;
+ }
+
+ if (ut) {
+ if (ut->uu_flag & (UT_RAGE_VNODES | UT_ATIME_UPDATE)) {
+ return 1;
+ }
+ }
+
+ if (proc->p_vfs_iopolicy & P_VFS_IOPOLICY_ATIME_UPDATES) {
+ return 1;
+ }
+ }
+ return 0;
}
/* is vnode_t marked to not keep data cached once it's been consumed */
-int
+int
vnode_isnocache(vnode_t vp)
{
- return ((vp->v_flag & VNOCACHE_DATA)? 1 : 0);
+ return (vp->v_flag & VNOCACHE_DATA)? 1 : 0;
}
/*
int
vnode_isnoreadahead(vnode_t vp)
{
- return ((vp->v_flag & VRAOFF)? 1 : 0);
+ return (vp->v_flag & VRAOFF)? 1 : 0;
+}
+
+int
+vnode_is_openevt(vnode_t vp)
+{
+ return (vp->v_flag & VOPENEVT)? 1 : 0;
}
/* is vnode_t a standard one? */
-int
+int
vnode_isstandard(vnode_t vp)
{
- return ((vp->v_flag & VSTANDARD)? 1 : 0);
+ return (vp->v_flag & VSTANDARD)? 1 : 0;
}
/* don't vflush() if SKIPSYSTEM */
-int
+int
vnode_isnoflush(vnode_t vp)
{
- return ((vp->v_flag & VNOFLUSH)? 1 : 0);
+ return (vp->v_flag & VNOFLUSH)? 1 : 0;
}
/* is vnode_t a regular file */
-int
+int
vnode_isreg(vnode_t vp)
{
- return ((vp->v_type == VREG)? 1 : 0);
+ return (vp->v_type == VREG)? 1 : 0;
}
/* is vnode_t a directory? */
-int
+int
vnode_isdir(vnode_t vp)
{
- return ((vp->v_type == VDIR)? 1 : 0);
+ return (vp->v_type == VDIR)? 1 : 0;
}
/* is vnode_t a symbolic link ? */
-int
+int
vnode_islnk(vnode_t vp)
{
- return ((vp->v_type == VLNK)? 1 : 0);
+ return (vp->v_type == VLNK)? 1 : 0;
+}
+
+int
+vnode_lookup_continue_needed(vnode_t vp, struct componentname *cnp)
+{
+ struct nameidata *ndp = cnp->cn_ndp;
+
+ if (ndp == NULL) {
+ panic("vnode_lookup_continue_needed(): cnp->cn_ndp is NULL\n");
+ }
+
+ if (vnode_isdir(vp)) {
+ if (vp->v_mountedhere != NULL) {
+ goto yes;
+ }
+
+#if CONFIG_TRIGGERS
+ if (vp->v_resolve) {
+ goto yes;
+ }
+#endif /* CONFIG_TRIGGERS */
+ }
+
+
+ if (vnode_islnk(vp)) {
+ /* From lookup(): || *ndp->ni_next == '/') No need for this, we know we're NULL-terminated here */
+ if (cnp->cn_flags & FOLLOW) {
+ goto yes;
+ }
+ if (ndp->ni_flag & NAMEI_TRAILINGSLASH) {
+ goto yes;
+ }
+ }
+
+ return 0;
+
+yes:
+ ndp->ni_flag |= NAMEI_CONTLOOKUP;
+ return EKEEPLOOKING;
}
/* is vnode_t a fifo ? */
-int
+int
vnode_isfifo(vnode_t vp)
{
- return ((vp->v_type == VFIFO)? 1 : 0);
+ return (vp->v_type == VFIFO)? 1 : 0;
}
/* is vnode_t a block device? */
-int
+int
vnode_isblk(vnode_t vp)
{
- return ((vp->v_type == VBLK)? 1 : 0);
+ return (vp->v_type == VBLK)? 1 : 0;
+}
+
+int
+vnode_isspec(vnode_t vp)
+{
+ return ((vp->v_type == VCHR) || (vp->v_type == VBLK)) ? 1 : 0;
}
/* is vnode_t a char device? */
-int
+int
vnode_ischr(vnode_t vp)
{
- return ((vp->v_type == VCHR)? 1 : 0);
+ return (vp->v_type == VCHR)? 1 : 0;
}
/* is vnode_t a socket? */
-int
+int
vnode_issock(vnode_t vp)
{
- return ((vp->v_type == VSOCK)? 1 : 0);
+ return (vp->v_type == VSOCK)? 1 : 0;
+}
+
+/* is vnode_t a device with multiple active vnodes referring to it? */
+int
+vnode_isaliased(vnode_t vp)
+{
+ enum vtype vt = vp->v_type;
+ if (!((vt == VCHR) || (vt == VBLK))) {
+ return 0;
+ } else {
+ return vp->v_specflags & SI_ALIASED;
+ }
+}
+
+/* is vnode_t a named stream? */
+int
+vnode_isnamedstream(
+#if NAMEDSTREAMS
+ vnode_t vp
+#else
+ __unused vnode_t vp
+#endif
+ )
+{
+#if NAMEDSTREAMS
+ return (vp->v_flag & VISNAMEDSTREAM) ? 1 : 0;
+#else
+ return 0;
+#endif
}
+int
+vnode_isshadow(
+#if NAMEDSTREAMS
+ vnode_t vp
+#else
+ __unused vnode_t vp
+#endif
+ )
+{
+#if NAMEDSTREAMS
+ return (vp->v_flag & VISSHADOW) ? 1 : 0;
+#else
+ return 0;
+#endif
+}
+/* does vnode have associated named stream vnodes ? */
+int
+vnode_hasnamedstreams(
+#if NAMEDSTREAMS
+ vnode_t vp
+#else
+ __unused vnode_t vp
+#endif
+ )
+{
+#if NAMEDSTREAMS
+ return (vp->v_lflag & VL_HASSTREAMS) ? 1 : 0;
+#else
+ return 0;
+#endif
+}
/* TBD: set vnode_t to not cache data after it is consumed once; used for quota */
-void
+void
vnode_setnocache(vnode_t vp)
{
- vnode_lock(vp);
+ vnode_lock_spin(vp);
vp->v_flag |= VNOCACHE_DATA;
vnode_unlock(vp);
}
-void
+void
vnode_clearnocache(vnode_t vp)
{
- vnode_lock(vp);
+ vnode_lock_spin(vp);
vp->v_flag &= ~VNOCACHE_DATA;
vnode_unlock(vp);
}
-void
+void
+vnode_set_openevt(vnode_t vp)
+{
+ vnode_lock_spin(vp);
+ vp->v_flag |= VOPENEVT;
+ vnode_unlock(vp);
+}
+
+void
+vnode_clear_openevt(vnode_t vp)
+{
+ vnode_lock_spin(vp);
+ vp->v_flag &= ~VOPENEVT;
+ vnode_unlock(vp);
+}
+
+
+void
vnode_setnoreadahead(vnode_t vp)
{
- vnode_lock(vp);
+ vnode_lock_spin(vp);
vp->v_flag |= VRAOFF;
vnode_unlock(vp);
}
-void
+void
vnode_clearnoreadahead(vnode_t vp)
{
- vnode_lock(vp);
+ vnode_lock_spin(vp);
vp->v_flag &= ~VRAOFF;
vnode_unlock(vp);
}
+int
+vnode_isfastdevicecandidate(vnode_t vp)
+{
+ return (vp->v_flag & VFASTDEVCANDIDATE)? 1 : 0;
+}
+
+void
+vnode_setfastdevicecandidate(vnode_t vp)
+{
+ vnode_lock_spin(vp);
+ vp->v_flag |= VFASTDEVCANDIDATE;
+ vnode_unlock(vp);
+}
+
+void
+vnode_clearfastdevicecandidate(vnode_t vp)
+{
+ vnode_lock_spin(vp);
+ vp->v_flag &= ~VFASTDEVCANDIDATE;
+ vnode_unlock(vp);
+}
+
+int
+vnode_isautocandidate(vnode_t vp)
+{
+ return (vp->v_flag & VAUTOCANDIDATE)? 1 : 0;
+}
+
+void
+vnode_setautocandidate(vnode_t vp)
+{
+ vnode_lock_spin(vp);
+ vp->v_flag |= VAUTOCANDIDATE;
+ vnode_unlock(vp);
+}
+
+void
+vnode_clearautocandidate(vnode_t vp)
+{
+ vnode_lock_spin(vp);
+ vp->v_flag &= ~VAUTOCANDIDATE;
+ vnode_unlock(vp);
+}
+
+
+
/* mark vnode_t to skip vflush() is SKIPSYSTEM */
-void
+void
vnode_setnoflush(vnode_t vp)
{
- vnode_lock(vp);
+ vnode_lock_spin(vp);
vp->v_flag |= VNOFLUSH;
vnode_unlock(vp);
}
-void
+void
vnode_clearnoflush(vnode_t vp)
{
- vnode_lock(vp);
+ vnode_lock_spin(vp);
vp->v_flag &= ~VNOFLUSH;
vnode_unlock(vp);
}
/* is vnode_t a blkdevice and has a FS mounted on it */
-int
+int
vnode_ismountedon(vnode_t vp)
{
- return ((vp->v_specflags & SI_MOUNTEDON)? 1 : 0);
+ return (vp->v_specflags & SI_MOUNTEDON)? 1 : 0;
}
-void
+void
vnode_setmountedon(vnode_t vp)
{
- vnode_lock(vp);
+ vnode_lock_spin(vp);
vp->v_specflags |= SI_MOUNTEDON;
vnode_unlock(vp);
}
-void
+void
vnode_clearmountedon(vnode_t vp)
{
- vnode_lock(vp);
+ vnode_lock_spin(vp);
vp->v_specflags &= ~SI_MOUNTEDON;
vnode_unlock(vp);
}
void
vnode_settag(vnode_t vp, int tag)
{
- vp->v_tag = tag;
-
+ /*
+ * We only assign enum values to v_tag, but add an assert to make sure we
+ * catch it in dev/debug builds if this ever change.
+ */
+ assert(tag >= SHRT_MIN && tag <= SHRT_MAX);
+ vp->v_tag = (uint16_t)tag;
}
int
vnode_tag(vnode_t vp)
{
- return(vp->v_tag);
+ return vp->v_tag;
}
-vnode_t
+vnode_t
vnode_parent(vnode_t vp)
{
-
- return(vp->v_parent);
+ return vp->v_parent;
}
void
vp->v_parent = dvp;
}
-char *
-vnode_name(vnode_t vp)
-{
- /* we try to keep v_name a reasonable name for the node */
- return(vp->v_name);
-}
-
void
vnode_setname(vnode_t vp, char * name)
{
}
/* return the registered FS name when adding the FS to kernel */
-void
+void
vnode_vfsname(vnode_t vp, char * buf)
{
- strncpy(buf, vp->v_mount->mnt_vtable->vfc_name, MFSNAMELEN);
+ strlcpy(buf, vp->v_mount->mnt_vtable->vfc_name, MFSNAMELEN);
}
/* return the FS type number */
-int
+int
vnode_vfstypenum(vnode_t vp)
{
- return(vp->v_mount->mnt_vtable->vfc_typenum);
+ return vp->v_mount->mnt_vtable->vfc_typenum;
}
int
-vnode_vfs64bitready(vnode_t vp)
+vnode_vfs64bitready(vnode_t vp)
{
-
- if ((vp->v_mount->mnt_vtable->vfc_64bitready))
- return(1);
- else
- return(0);
+ /*
+ * Checking for dead_mountp is a bit of a hack for SnowLeopard: <rdar://problem/6269051>
+ */
+ if ((vp->v_mount != dead_mountp) && (vp->v_mount->mnt_vtable->vfc_vfsflags & VFC_VFS64BITREADY)) {
+ return 1;
+ } else {
+ return 0;
+ }
}
/* return the visible flags on associated mount point of vnode_t */
-uint32_t
+uint32_t
vnode_vfsvisflags(vnode_t vp)
{
- return(vp->v_mount->mnt_flag & MNT_VISFLAGMASK);
+ return vp->v_mount->mnt_flag & MNT_VISFLAGMASK;
}
/* return the command modifier flags on associated mount point of vnode_t */
-uint32_t
+uint32_t
vnode_vfscmdflags(vnode_t vp)
{
- return(vp->v_mount->mnt_flag & MNT_CMDFLAGS);
+ return vp->v_mount->mnt_flag & MNT_CMDFLAGS;
}
/* return the max symlink of short links of vnode_t */
-uint32_t
+uint32_t
vnode_vfsmaxsymlen(vnode_t vp)
{
- return(vp->v_mount->mnt_maxsymlinklen);
+ return vp->v_mount->mnt_maxsymlinklen;
}
/* return a pointer to the RO vfs_statfs associated with vnode_t's mount point */
struct vfsstatfs *
vnode_vfsstatfs(vnode_t vp)
{
- return(&vp->v_mount->mnt_vfsstat);
+ return &vp->v_mount->mnt_vfsstat;
}
/* return a handle to the FSs specific private handle associated with vnode_t's mount point */
void *
vnode_vfsfsprivate(vnode_t vp)
{
- return(vp->v_mount->mnt_data);
+ return vp->v_mount->mnt_data;
}
/* is vnode_t in a rdonly mounted FS */
-int
+int
vnode_vfsisrdonly(vnode_t vp)
{
- return ((vp->v_mount->mnt_flag & MNT_RDONLY)? 1 : 0);
+ return (vp->v_mount->mnt_flag & MNT_RDONLY)? 1 : 0;
}
-
-/* returns vnode ref to current working directory */
-vnode_t
-current_workingdir(void)
+int
+vnode_compound_rename_available(vnode_t vp)
{
- struct proc *p = current_proc();
- struct vnode * vp ;
-
- if ( (vp = p->p_fd->fd_cdir) ) {
- if ( (vnode_getwithref(vp)) )
- return (NULL);
- }
- return vp;
+ return vnode_compound_op_available(vp, COMPOUND_VNOP_RENAME);
+}
+int
+vnode_compound_rmdir_available(vnode_t vp)
+{
+ return vnode_compound_op_available(vp, COMPOUND_VNOP_RMDIR);
+}
+int
+vnode_compound_mkdir_available(vnode_t vp)
+{
+ return vnode_compound_op_available(vp, COMPOUND_VNOP_MKDIR);
+}
+int
+vnode_compound_remove_available(vnode_t vp)
+{
+ return vnode_compound_op_available(vp, COMPOUND_VNOP_REMOVE);
+}
+int
+vnode_compound_open_available(vnode_t vp)
+{
+ return vnode_compound_op_available(vp, COMPOUND_VNOP_OPEN);
}
-/* returns vnode ref to current root(chroot) directory */
-vnode_t
-current_rootdir(void)
+int
+vnode_compound_op_available(vnode_t vp, compound_vnop_id_t opid)
{
- struct proc *p = current_proc();
- struct vnode * vp ;
+ return (vp->v_mount->mnt_compound_ops & opid) != 0;
+}
- if ( (vp = p->p_fd->fd_rdir) ) {
- if ( (vnode_getwithref(vp)) )
- return (NULL);
- }
- return vp;
+/*
+ * Returns vnode ref to current working directory; if a per-thread current
+ * working directory is in effect, return that instead of the per process one.
+ *
+ * XXX Published, but not used.
+ */
+vnode_t
+current_workingdir(void)
+{
+ return vfs_context_cwd(vfs_context_current());
}
+/*
+ * Get a filesec and optional acl contents from an extended attribute.
+ * Function will attempt to retrive ACL, UUID, and GUID information using a
+ * read of a named extended attribute (KAUTH_FILESEC_XATTR).
+ *
+ * Parameters: vp The vnode on which to operate.
+ * fsecp The filesec (and ACL, if any) being
+ * retrieved.
+ * ctx The vnode context in which the
+ * operation is to be attempted.
+ *
+ * Returns: 0 Success
+ * !0 errno value
+ *
+ * Notes: The kauth_filesec_t in '*fsecp', if retrieved, will be in
+ * host byte order, as will be the ACL contents, if any.
+ * Internally, we will cannonize these values from network (PPC)
+ * byte order after we retrieve them so that the on-disk contents
+ * of the extended attribute are identical for both PPC and Intel
+ * (if we were not being required to provide this service via
+ * fallback, this would be the job of the filesystem
+ * 'VNOP_GETATTR' call).
+ *
+ * We use ntohl() because it has a transitive property on Intel
+ * machines and no effect on PPC mancines. This guarantees us
+ *
+ * XXX: Deleting rather than ignoreing a corrupt security structure is
+ * probably the only way to reset it without assistance from an
+ * file system integrity checking tool. Right now we ignore it.
+ *
+ * XXX: We should enummerate the possible errno values here, and where
+ * in the code they originated.
+ */
static int
vnode_get_filesec(vnode_t vp, kauth_filesec_t *fsecp, vfs_context_t ctx)
{
kauth_filesec_t fsec;
- uio_t fsec_uio;
- size_t fsec_size;
- size_t xsize, rsize;
- int error;
+ uio_t fsec_uio;
+ size_t fsec_size;
+ size_t xsize, rsize;
+ int error;
+ uint32_t host_fsec_magic;
+ uint32_t host_acl_entrycount;
fsec = NULL;
fsec_uio = NULL;
- error = 0;
-
+
/* find out how big the EA is */
- if (vn_getxattr(vp, KAUTH_FILESEC_XATTR, NULL, &xsize, XATTR_NOSECURITY, ctx) != 0) {
+ error = vn_getxattr(vp, KAUTH_FILESEC_XATTR, NULL, &xsize, XATTR_NOSECURITY, ctx);
+ if (error != 0) {
/* no EA, no filesec */
- if ((error == ENOATTR) || (error == ENOENT) || (error == EJUSTRETURN))
+ if ((error == ENOATTR) || (error == ENOENT) || (error == EJUSTRETURN)) {
error = 0;
+ }
/* either way, we are done */
goto out;
}
-
+
+ /*
+ * To be valid, a kauth_filesec_t must be large enough to hold a zero
+ * ACE entrly ACL, and if it's larger than that, it must have the right
+ * number of bytes such that it contains an atomic number of ACEs,
+ * rather than partial entries. Otherwise, we ignore it.
+ */
+ if (!KAUTH_FILESEC_VALID(xsize)) {
+ KAUTH_DEBUG(" ERROR - Bogus kauth_fiilesec_t: %ld bytes", xsize);
+ error = 0;
+ goto out;
+ }
+
/* how many entries would fit? */
fsec_size = KAUTH_FILESEC_COUNT(xsize);
+ if (fsec_size > KAUTH_ACL_MAX_ENTRIES) {
+ KAUTH_DEBUG(" ERROR - Bogus (too large) kauth_fiilesec_t: %ld bytes", xsize);
+ error = 0;
+ goto out;
+ }
/* get buffer and uio */
- if (((fsec = kauth_filesec_alloc(fsec_size)) == NULL) ||
+ if (((fsec = kauth_filesec_alloc((int)fsec_size)) == NULL) ||
((fsec_uio = uio_create(1, 0, UIO_SYSSPACE, UIO_READ)) == NULL) ||
uio_addiov(fsec_uio, CAST_USER_ADDR_T(fsec), xsize)) {
- KAUTH_DEBUG(" ERROR - could not allocate iov to read ACL");
+ KAUTH_DEBUG(" ERROR - could not allocate iov to read ACL");
error = ENOMEM;
goto out;
}
/* read security attribute */
rsize = xsize;
if ((error = vn_getxattr(vp,
- KAUTH_FILESEC_XATTR,
- fsec_uio,
- &rsize,
- XATTR_NOSECURITY,
- ctx)) != 0) {
-
+ KAUTH_FILESEC_XATTR,
+ fsec_uio,
+ &rsize,
+ XATTR_NOSECURITY,
+ ctx)) != 0) {
/* no attribute - no security data */
- if ((error == ENOATTR) || (error == ENOENT) || (error == EJUSTRETURN))
+ if ((error == ENOATTR) || (error == ENOENT) || (error == EJUSTRETURN)) {
error = 0;
+ }
/* either way, we are done */
goto out;
}
/*
- * Validate security structure. If it's corrupt, we will
- * just ignore it.
+ * Validate security structure; the validation must take place in host
+ * byte order. If it's corrupt, we will just ignore it.
*/
+
+ /* Validate the size before trying to convert it */
if (rsize < KAUTH_FILESEC_SIZE(0)) {
KAUTH_DEBUG("ACL - DATA TOO SMALL (%d)", rsize);
goto out;
}
- if (fsec->fsec_magic != KAUTH_FILESEC_MAGIC) {
- KAUTH_DEBUG("ACL - BAD MAGIC %x", fsec->fsec_magic);
- goto out;
- }
- if ((fsec->fsec_acl.acl_entrycount != KAUTH_FILESEC_NOACL) &&
- (fsec->fsec_acl.acl_entrycount > KAUTH_ACL_MAX_ENTRIES)) {
- KAUTH_DEBUG("ACL - BAD ENTRYCOUNT %x", fsec->fsec_entrycount);
+
+ /* Validate the magic number before trying to convert it */
+ host_fsec_magic = ntohl(KAUTH_FILESEC_MAGIC);
+ if (fsec->fsec_magic != host_fsec_magic) {
+ KAUTH_DEBUG("ACL - BAD MAGIC %x", host_fsec_magic);
goto out;
}
- if ((fsec->fsec_acl.acl_entrycount != KAUTH_FILESEC_NOACL) &&
- (KAUTH_FILESEC_SIZE(fsec->fsec_acl.acl_entrycount) > rsize)) {
- KAUTH_DEBUG("ACL - BUFFER OVERFLOW (%d entries too big for %d)", fsec->fsec_acl.acl_entrycount, rsize);
- goto out;
+
+ /* Validate the entry count before trying to convert it. */
+ host_acl_entrycount = ntohl(fsec->fsec_acl.acl_entrycount);
+ if (host_acl_entrycount != KAUTH_FILESEC_NOACL) {
+ if (host_acl_entrycount > KAUTH_ACL_MAX_ENTRIES) {
+ KAUTH_DEBUG("ACL - BAD ENTRYCOUNT %x", host_acl_entrycount);
+ goto out;
+ }
+ if (KAUTH_FILESEC_SIZE(host_acl_entrycount) > rsize) {
+ KAUTH_DEBUG("ACL - BUFFER OVERFLOW (%d entries too big for %d)", host_acl_entrycount, rsize);
+ goto out;
+ }
}
+ kauth_filesec_acl_setendian(KAUTH_ENDIAN_HOST, fsec, NULL);
+
*fsecp = fsec;
fsec = NULL;
error = 0;
out:
- if (fsec != NULL)
+ if (fsec != NULL) {
kauth_filesec_free(fsec);
- if (fsec_uio != NULL)
+ }
+ if (fsec_uio != NULL) {
uio_free(fsec_uio);
- if (error)
+ }
+ if (error) {
*fsecp = NULL;
- return(error);
+ }
+ return error;
}
+/*
+ * Set a filesec and optional acl contents into an extended attribute.
+ * function will attempt to store ACL, UUID, and GUID information using a
+ * write to a named extended attribute (KAUTH_FILESEC_XATTR). The 'acl'
+ * may or may not point to the `fsec->fsec_acl`, depending on whether the
+ * original caller supplied an acl.
+ *
+ * Parameters: vp The vnode on which to operate.
+ * fsec The filesec being set.
+ * acl The acl to be associated with 'fsec'.
+ * ctx The vnode context in which the
+ * operation is to be attempted.
+ *
+ * Returns: 0 Success
+ * !0 errno value
+ *
+ * Notes: Both the fsec and the acl are always valid.
+ *
+ * The kauth_filesec_t in 'fsec', if any, is in host byte order,
+ * as are the acl contents, if they are used. Internally, we will
+ * cannonize these values into network (PPC) byte order before we
+ * attempt to write them so that the on-disk contents of the
+ * extended attribute are identical for both PPC and Intel (if we
+ * were not being required to provide this service via fallback,
+ * this would be the job of the filesystem 'VNOP_SETATTR' call).
+ * We reverse this process on the way out, so we leave with the
+ * same byte order we started with.
+ *
+ * XXX: We should enummerate the possible errno values here, and where
+ * in the code they originated.
+ */
static int
vnode_set_filesec(vnode_t vp, kauth_filesec_t fsec, kauth_acl_t acl, vfs_context_t ctx)
{
- uio_t fsec_uio;
- int error;
+ uio_t fsec_uio;
+ int error;
+ uint32_t saved_acl_copysize;
fsec_uio = NULL;
-
+
if ((fsec_uio = uio_create(2, 0, UIO_SYSSPACE, UIO_WRITE)) == NULL) {
- KAUTH_DEBUG(" ERROR - could not allocate iov to write ACL");
+ KAUTH_DEBUG(" ERROR - could not allocate iov to write ACL");
error = ENOMEM;
goto out;
}
- uio_addiov(fsec_uio, CAST_USER_ADDR_T(fsec), sizeof(struct kauth_filesec) - sizeof(struct kauth_acl));
- uio_addiov(fsec_uio, CAST_USER_ADDR_T(acl), KAUTH_ACL_COPYSIZE(acl));
+ /*
+ * Save the pre-converted ACL copysize, because it gets swapped too
+ * if we are running with the wrong endianness.
+ */
+ saved_acl_copysize = KAUTH_ACL_COPYSIZE(acl);
+
+ kauth_filesec_acl_setendian(KAUTH_ENDIAN_DISK, fsec, acl);
+
+ uio_addiov(fsec_uio, CAST_USER_ADDR_T(fsec), KAUTH_FILESEC_SIZE(0) - KAUTH_ACL_SIZE(KAUTH_FILESEC_NOACL));
+ uio_addiov(fsec_uio, CAST_USER_ADDR_T(acl), saved_acl_copysize);
error = vn_setxattr(vp,
KAUTH_FILESEC_XATTR,
fsec_uio,
- XATTR_NOSECURITY, /* we have auth'ed already */
+ XATTR_NOSECURITY, /* we have auth'ed already */
ctx);
VFS_DEBUG(ctx, vp, "SETATTR - set ACL returning %d", error);
+ kauth_filesec_acl_setendian(KAUTH_ENDIAN_HOST, fsec, acl);
+
out:
- if (fsec_uio != NULL)
+ if (fsec_uio != NULL) {
uio_free(fsec_uio);
- return(error);
+ }
+ return error;
}
+/*
+ * Handle uid/gid == 99 and MNT_IGNORE_OWNERSHIP here.
+ */
+void
+vnode_attr_handle_mnt_ignore_ownership(struct vnode_attr *vap, mount_t mp, vfs_context_t ctx)
+{
+ uid_t nuid;
+ gid_t ngid;
+
+ if (VATTR_IS_ACTIVE(vap, va_uid)) {
+ if (vfs_context_issuser(ctx) && VATTR_IS_SUPPORTED(vap, va_uid)) {
+ nuid = vap->va_uid;
+ } else if (mp->mnt_flag & MNT_IGNORE_OWNERSHIP) {
+ nuid = mp->mnt_fsowner;
+ if (nuid == KAUTH_UID_NONE) {
+ nuid = 99;
+ }
+ } else if (VATTR_IS_SUPPORTED(vap, va_uid)) {
+ nuid = vap->va_uid;
+ } else {
+ /* this will always be something sensible */
+ nuid = mp->mnt_fsowner;
+ }
+ if ((nuid == 99) && !vfs_context_issuser(ctx)) {
+ nuid = kauth_cred_getuid(vfs_context_ucred(ctx));
+ }
+ VATTR_RETURN(vap, va_uid, nuid);
+ }
+ if (VATTR_IS_ACTIVE(vap, va_gid)) {
+ if (vfs_context_issuser(ctx) && VATTR_IS_SUPPORTED(vap, va_gid)) {
+ ngid = vap->va_gid;
+ } else if (mp->mnt_flag & MNT_IGNORE_OWNERSHIP) {
+ ngid = mp->mnt_fsgroup;
+ if (ngid == KAUTH_GID_NONE) {
+ ngid = 99;
+ }
+ } else if (VATTR_IS_SUPPORTED(vap, va_gid)) {
+ ngid = vap->va_gid;
+ } else {
+ /* this will always be something sensible */
+ ngid = mp->mnt_fsgroup;
+ }
+ if ((ngid == 99) && !vfs_context_issuser(ctx)) {
+ ngid = kauth_cred_getgid(vfs_context_ucred(ctx));
+ }
+ VATTR_RETURN(vap, va_gid, ngid);
+ }
+}
+/*
+ * Returns: 0 Success
+ * ENOMEM Not enough space [only if has filesec]
+ * EINVAL Requested unknown attributes
+ * VNOP_GETATTR: ???
+ * vnode_get_filesec: ???
+ * kauth_cred_guid2uid: ???
+ * kauth_cred_guid2gid: ???
+ * vfs_update_vfsstat: ???
+ */
int
vnode_getattr(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx)
{
kauth_filesec_t fsec;
kauth_acl_t facl;
- int error;
- uid_t nuid;
- gid_t ngid;
+ int error;
+
+ /*
+ * Reject attempts to fetch unknown attributes.
+ */
+ if (vap->va_active & ~VNODE_ATTR_ALL) {
+ return EINVAL;
+ }
/* don't ask for extended security data if the filesystem doesn't support it */
if (!vfs_extendedsecurity(vnode_mount(vp))) {
VATTR_SET_ACTIVE(vap, va_total_size);
VATTR_SET_ACTIVE(vap, va_total_alloc);
}
-
+
+ vap->va_vaflags &= ~VA_USEFSID;
+
error = VNOP_GETATTR(vp, vap, ctx);
if (error) {
KAUTH_DEBUG("ERROR - returning %d", error);
if (VATTR_NOT_RETURNED(vap, va_acl) || VATTR_NOT_RETURNED(vap, va_uuuid) || VATTR_NOT_RETURNED(vap, va_guuid)) {
fsec = NULL;
- if ((vp->v_type == VDIR) || (vp->v_type == VLNK) || (vp->v_type == VREG)) {
+ if (XATTR_VNODE_SUPPORTED(vp)) {
/* try to get the filesec */
- if ((error = vnode_get_filesec(vp, &fsec, ctx)) != 0)
+ if ((error = vnode_get_filesec(vp, &fsec, ctx)) != 0) {
goto out;
+ }
}
/* if no filesec, no attributes */
if (fsec == NULL) {
VATTR_RETURN(vap, va_uuuid, kauth_null_guid);
VATTR_RETURN(vap, va_guuid, kauth_null_guid);
} else {
-
/* looks good, try to return what we were asked for */
VATTR_RETURN(vap, va_uuuid, fsec->fsec_owner);
VATTR_RETURN(vap, va_guuid, fsec->fsec_group);
error = ENOMEM;
goto out;
}
- bcopy(&fsec->fsec_acl, facl, KAUTH_ACL_COPYSIZE(&fsec->fsec_acl));
+ __nochk_bcopy(&fsec->fsec_acl, facl, KAUTH_ACL_COPYSIZE(&fsec->fsec_acl));
VATTR_RETURN(vap, va_acl, facl);
}
}
* only expect what they asked for.
*/
if (VATTR_IS_SUPPORTED(vap, va_acl) && !VATTR_IS_ACTIVE(vap, va_acl)) {
- if (vap->va_acl != NULL)
+ if (vap->va_acl != NULL) {
kauth_acl_free(vap->va_acl);
+ }
VATTR_CLEAR_SUPPORTED(vap, va_acl);
}
-#if 0 /* enable when we have a filesystem only supporting UUIDs */
+#if 0 /* enable when we have a filesystem only supporting UUIDs */
/*
* Handle the case where we need a UID/GID, but only have extended
* security information.
if (VATTR_NOT_RETURNED(vap, va_uid) &&
VATTR_IS_SUPPORTED(vap, va_uuuid) &&
!kauth_guid_equal(&vap->va_uuuid, &kauth_null_guid)) {
- if ((error = kauth_cred_guid2uid(&vap->va_uuuid, &nuid)) == 0)
+ if ((error = kauth_cred_guid2uid(&vap->va_uuuid, &nuid)) == 0) {
VATTR_RETURN(vap, va_uid, nuid);
+ }
}
if (VATTR_NOT_RETURNED(vap, va_gid) &&
VATTR_IS_SUPPORTED(vap, va_guuid) &&
!kauth_guid_equal(&vap->va_guuid, &kauth_null_guid)) {
- if ((error = kauth_cred_guid2gid(&vap->va_guuid, &ngid)) == 0)
+ if ((error = kauth_cred_guid2gid(&vap->va_guuid, &ngid)) == 0) {
VATTR_RETURN(vap, va_gid, ngid);
+ }
}
#endif
-
+
+ vnode_attr_handle_mnt_ignore_ownership(vap, vp->v_mount, ctx);
+
/*
- * Handle uid/gid == 99 and MNT_IGNORE_OWNERSHIP here.
+ * Synthesise some values that can be reasonably guessed.
*/
- if (VATTR_IS_ACTIVE(vap, va_uid)) {
- if (vp->v_mount->mnt_flag & MNT_IGNORE_OWNERSHIP) {
- nuid = vp->v_mount->mnt_fsowner;
- if (nuid == KAUTH_UID_NONE)
- nuid = 99;
- } else if (VATTR_IS_SUPPORTED(vap, va_uid)) {
- nuid = vap->va_uid;
- } else {
- /* this will always be something sensible */
- nuid = vp->v_mount->mnt_fsowner;
- }
- if ((nuid == 99) && !vfs_context_issuser(ctx))
- nuid = kauth_cred_getuid(vfs_context_ucred(ctx));
- VATTR_RETURN(vap, va_uid, nuid);
- }
- if (VATTR_IS_ACTIVE(vap, va_gid)) {
- if (vp->v_mount->mnt_flag & MNT_IGNORE_OWNERSHIP) {
- ngid = vp->v_mount->mnt_fsgroup;
- if (ngid == KAUTH_GID_NONE)
- ngid = 99;
- } else if (VATTR_IS_SUPPORTED(vap, va_gid)) {
- ngid = vap->va_gid;
- } else {
- /* this will always be something sensible */
- ngid = vp->v_mount->mnt_fsgroup;
- }
- if ((ngid == 99) && !vfs_context_issuser(ctx))
- ngid = kauth_cred_getgid(vfs_context_ucred(ctx));
- VATTR_RETURN(vap, va_gid, ngid);
+ if (!VATTR_IS_SUPPORTED(vap, va_iosize)) {
+ assert(vp->v_mount->mnt_vfsstat.f_iosize <= UINT32_MAX);
+ VATTR_RETURN(vap, va_iosize, (uint32_t)vp->v_mount->mnt_vfsstat.f_iosize);
}
- /*
- * Synthesise some values that can be reasonably guessed.
- */
- if (!VATTR_IS_SUPPORTED(vap, va_iosize))
- VATTR_RETURN(vap, va_iosize, vp->v_mount->mnt_vfsstat.f_iosize);
-
- if (!VATTR_IS_SUPPORTED(vap, va_flags))
+ if (!VATTR_IS_SUPPORTED(vap, va_flags)) {
VATTR_RETURN(vap, va_flags, 0);
+ }
- if (!VATTR_IS_SUPPORTED(vap, va_filerev))
+ if (!VATTR_IS_SUPPORTED(vap, va_filerev)) {
VATTR_RETURN(vap, va_filerev, 0);
+ }
- if (!VATTR_IS_SUPPORTED(vap, va_gen))
+ if (!VATTR_IS_SUPPORTED(vap, va_gen)) {
VATTR_RETURN(vap, va_gen, 0);
+ }
/*
* Default sizes. Ordering here is important, as later defaults build on earlier ones.
*/
- if (!VATTR_IS_SUPPORTED(vap, va_data_size))
+ if (!VATTR_IS_SUPPORTED(vap, va_data_size)) {
VATTR_RETURN(vap, va_data_size, 0);
+ }
/* do we want any of the possibly-computed values? */
if (VATTR_IS_ACTIVE(vap, va_data_alloc) ||
VATTR_IS_ACTIVE(vap, va_total_size) ||
VATTR_IS_ACTIVE(vap, va_total_alloc)) {
- /* make sure f_bsize is valid */
- if (vp->v_mount->mnt_vfsstat.f_bsize == 0) {
- if ((error = vfs_update_vfsstat(vp->v_mount, ctx)) != 0)
- goto out;
- }
+ /* make sure f_bsize is valid */
+ if (vp->v_mount->mnt_vfsstat.f_bsize == 0) {
+ if ((error = vfs_update_vfsstat(vp->v_mount, ctx, VFS_KERNEL_EVENT)) != 0) {
+ goto out;
+ }
+ }
/* default va_data_alloc from va_data_size */
- if (!VATTR_IS_SUPPORTED(vap, va_data_alloc))
+ if (!VATTR_IS_SUPPORTED(vap, va_data_alloc)) {
VATTR_RETURN(vap, va_data_alloc, roundup(vap->va_data_size, vp->v_mount->mnt_vfsstat.f_bsize));
+ }
/* default va_total_size from va_data_size */
- if (!VATTR_IS_SUPPORTED(vap, va_total_size))
+ if (!VATTR_IS_SUPPORTED(vap, va_total_size)) {
VATTR_RETURN(vap, va_total_size, vap->va_data_size);
+ }
/* default va_total_alloc from va_total_size which is guaranteed at this point */
- if (!VATTR_IS_SUPPORTED(vap, va_total_alloc))
+ if (!VATTR_IS_SUPPORTED(vap, va_total_alloc)) {
VATTR_RETURN(vap, va_total_alloc, roundup(vap->va_total_size, vp->v_mount->mnt_vfsstat.f_bsize));
+ }
}
/*
* If we don't have a change time, pull it from the modtime.
*/
- if (!VATTR_IS_SUPPORTED(vap, va_change_time) && VATTR_IS_SUPPORTED(vap, va_modify_time))
+ if (!VATTR_IS_SUPPORTED(vap, va_change_time) && VATTR_IS_SUPPORTED(vap, va_modify_time)) {
VATTR_RETURN(vap, va_change_time, vap->va_modify_time);
+ }
/*
* This is really only supported for the creation VNOPs, but since the field is there
/*
* The fsid can be obtained from the mountpoint directly.
*/
- VATTR_RETURN(vap, va_fsid, vp->v_mount->mnt_vfsstat.f_fsid.val[0]);
+ if (VATTR_IS_ACTIVE(vap, va_fsid) &&
+ (!VATTR_IS_SUPPORTED(vap, va_fsid) ||
+ vap->va_vaflags & VA_REALFSID || !(vap->va_vaflags & VA_USEFSID))) {
+ VATTR_RETURN(vap, va_fsid, vp->v_mount->mnt_vfsstat.f_fsid.val[0]);
+ }
out:
+ vap->va_vaflags &= ~VA_USEFSID;
- return(error);
+ return error;
+}
+
+/*
+ * Choose 32 bit or 64 bit fsid
+ */
+uint64_t
+vnode_get_va_fsid(struct vnode_attr *vap)
+{
+ if (VATTR_IS_SUPPORTED(vap, va_fsid64)) {
+ return (uint64_t)vap->va_fsid64.val[0] + ((uint64_t)vap->va_fsid64.val[1] << 32);
+ }
+ return vap->va_fsid;
}
+/*
+ * Set the attributes on a vnode in a vnode context.
+ *
+ * Parameters: vp The vnode whose attributes to set.
+ * vap A pointer to the attributes to set.
+ * ctx The vnode context in which the
+ * operation is to be attempted.
+ *
+ * Returns: 0 Success
+ * !0 errno value
+ *
+ * Notes: The kauth_filesec_t in 'vap', if any, is in host byte order.
+ *
+ * The contents of the data area pointed to by 'vap' may be
+ * modified if the vnode is on a filesystem which has been
+ * mounted with ingore ownership flags, or by the underlyng
+ * VFS itself, or by the fallback code, if the underlying VFS
+ * does not support ACL, UUID, or GUUID attributes directly.
+ *
+ * XXX: We should enummerate the possible errno values here, and where
+ * in the code they originated.
+ */
int
vnode_setattr(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx)
{
- int error, is_ownership_change=0;
+ int error;
+#if CONFIG_FSE
+ uint64_t active;
+ int is_perm_change = 0;
+ int is_stat_change = 0;
+#endif
+
+ /*
+ * Reject attempts to set unknown attributes.
+ */
+ if (vap->va_active & ~VNODE_ATTR_ALL) {
+ return EINVAL;
+ }
/*
* Make sure the filesystem is mounted R/W.
* If not, return an error.
*/
- if (vfs_isrdonly(vp->v_mount))
- return(EROFS);
-
+ if (vfs_isrdonly(vp->v_mount)) {
+ error = EROFS;
+ goto out;
+ }
+
+#if DEVELOPMENT || DEBUG
+ /*
+ * XXX VSWAP: Check for entitlements or special flag here
+ * so we can restrict access appropriately.
+ */
+#else /* DEVELOPMENT || DEBUG */
+
+ if (vnode_isswap(vp) && (ctx != vfs_context_kernel())) {
+ error = EPERM;
+ goto out;
+ }
+#endif /* DEVELOPMENT || DEBUG */
+
+#if NAMEDSTREAMS
+ /* For streams, va_data_size is the only setable attribute. */
+ if ((vp->v_flag & VISNAMEDSTREAM) && (vap->va_active != VNODE_ATTR_va_data_size)) {
+ error = EPERM;
+ goto out;
+ }
+#endif
+ /* Check for truncation */
+ if (VATTR_IS_ACTIVE(vap, va_data_size)) {
+ switch (vp->v_type) {
+ case VREG:
+ /* For regular files it's ok */
+ break;
+ case VDIR:
+ /* Not allowed to truncate directories */
+ error = EISDIR;
+ goto out;
+ default:
+ /* For everything else we will clear the bit and let underlying FS decide on the rest */
+ VATTR_CLEAR_ACTIVE(vap, va_data_size);
+ if (vap->va_active) {
+ break;
+ }
+ /* If it was the only bit set, return success, to handle cases like redirect to /dev/null */
+ return 0;
+ }
+ }
+
/*
* If ownership is being ignored on this volume, we silently discard
* ownership changes.
VATTR_CLEAR_ACTIVE(vap, va_gid);
}
- if (VATTR_IS_ACTIVE(vap, va_uid) || VATTR_IS_ACTIVE(vap, va_gid)) {
- is_ownership_change = 1;
- }
-
/*
* Make sure that extended security is enabled if we're going to try
* to set any.
if (!vfs_extendedsecurity(vnode_mount(vp)) &&
(VATTR_IS_ACTIVE(vap, va_acl) || VATTR_IS_ACTIVE(vap, va_uuuid) || VATTR_IS_ACTIVE(vap, va_guuid))) {
KAUTH_DEBUG("SETATTR - returning ENOTSUP to request to set extended security");
- return(ENOTSUP);
+ error = ENOTSUP;
+ goto out;
+ }
+
+ /* Never allow the setting of any unsupported superuser flags. */
+ if (VATTR_IS_ACTIVE(vap, va_flags)) {
+ vap->va_flags &= (SF_SUPPORTED | UF_SETTABLE);
}
+#if CONFIG_FSE
+ /*
+ * Remember all of the active attributes that we're
+ * attempting to modify.
+ */
+ active = vap->va_active & ~VNODE_ATTR_RDONLY;
+#endif
+
error = VNOP_SETATTR(vp, vap, ctx);
- if ((error == 0) && !VATTR_ALL_SUPPORTED(vap))
+ if ((error == 0) && !VATTR_ALL_SUPPORTED(vap)) {
error = vnode_setattr_fallback(vp, vap, ctx);
+ }
+
+#if CONFIG_FSE
+#define PERMISSION_BITS (VNODE_ATTR_BIT(va_uid) | VNODE_ATTR_BIT(va_uuuid) | \
+ VNODE_ATTR_BIT(va_gid) | VNODE_ATTR_BIT(va_guuid) | \
+ VNODE_ATTR_BIT(va_mode) | VNODE_ATTR_BIT(va_acl))
/*
- * If we have changed any of the things about the file that are likely
- * to result in changes to authorisation results, blow the vnode auth
- * cache
+ * Now that we've changed them, decide whether to send an
+ * FSevent.
*/
- if (VATTR_IS_SUPPORTED(vap, va_mode) ||
- VATTR_IS_SUPPORTED(vap, va_uid) ||
- VATTR_IS_SUPPORTED(vap, va_gid) ||
- VATTR_IS_SUPPORTED(vap, va_flags) ||
- VATTR_IS_SUPPORTED(vap, va_acl) ||
- VATTR_IS_SUPPORTED(vap, va_uuuid) ||
- VATTR_IS_SUPPORTED(vap, va_guuid))
- vnode_uncache_credentials(vp);
- // only send a stat_changed event if this is more than
- // just an access time update
- if (error == 0 && (vap->va_active != VNODE_ATTR_BIT(va_access_time))) {
- if (need_fsevent(FSE_STAT_CHANGED, vp) || (is_ownership_change && need_fsevent(FSE_CHOWN, vp))) {
- if (is_ownership_change == 0)
- add_fsevent(FSE_STAT_CHANGED, ctx, FSE_ARG_VNODE, vp, FSE_ARG_DONE);
- else
- add_fsevent(FSE_CHOWN, ctx, FSE_ARG_VNODE, vp, FSE_ARG_DONE);
- }
- }
- return(error);
+ if ((active & PERMISSION_BITS) & vap->va_supported) {
+ is_perm_change = 1;
+ } else {
+ /*
+ * We've already checked the permission bits, and we
+ * also want to filter out access time / backup time
+ * changes.
+ */
+ active &= ~(PERMISSION_BITS |
+ VNODE_ATTR_BIT(va_access_time) |
+ VNODE_ATTR_BIT(va_backup_time));
+
+ /* Anything left to notify about? */
+ if (active & vap->va_supported) {
+ is_stat_change = 1;
+ }
+ }
+
+ if (error == 0) {
+ if (is_perm_change) {
+ if (need_fsevent(FSE_CHOWN, vp)) {
+ add_fsevent(FSE_CHOWN, ctx, FSE_ARG_VNODE, vp, FSE_ARG_DONE);
+ }
+ } else if (is_stat_change && need_fsevent(FSE_STAT_CHANGED, vp)) {
+ add_fsevent(FSE_STAT_CHANGED, ctx, FSE_ARG_VNODE, vp, FSE_ARG_DONE);
+ }
+ }
+#undef PERMISSION_BITS
+#endif
+
+out:
+ return error;
}
/*
- * Following an operation which sets attributes (setattr, create, etc.) we may
- * need to perform fallback operations to get attributes saved.
- */
+ * Fallback for setting the attributes on a vnode in a vnode context. This
+ * Function will attempt to store ACL, UUID, and GUID information utilizing
+ * a read/modify/write operation against an EA used as a backing store for
+ * the object.
+ *
+ * Parameters: vp The vnode whose attributes to set.
+ * vap A pointer to the attributes to set.
+ * ctx The vnode context in which the
+ * operation is to be attempted.
+ *
+ * Returns: 0 Success
+ * !0 errno value
+ *
+ * Notes: The kauth_filesec_t in 'vap', if any, is in host byte order,
+ * as are the fsec and lfsec, if they are used.
+ *
+ * The contents of the data area pointed to by 'vap' may be
+ * modified to indicate that the attribute is supported for
+ * any given requested attribute.
+ *
+ * XXX: We should enummerate the possible errno values here, and where
+ * in the code they originated.
+ */
int
vnode_setattr_fallback(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx)
{
kauth_filesec_t fsec;
kauth_acl_t facl;
struct kauth_filesec lfsec;
- int error;
+ int error;
error = 0;
/*
* Extended security fallback via extended attributes.
*
- * Note that we do not free the filesec; the caller is expected to do this.
+ * Note that we do not free the filesec; the caller is expected to
+ * do this.
*/
if (VATTR_NOT_RETURNED(vap, va_acl) ||
VATTR_NOT_RETURNED(vap, va_uuuid) ||
VFS_DEBUG(ctx, vp, "SETATTR - doing filesec fallback");
/*
- * Fail for file types that we don't permit extended security to be set on.
+ * Fail for file types that we don't permit extended security
+ * to be set on.
*/
- if ((vp->v_type != VDIR) && (vp->v_type != VLNK) && (vp->v_type != VREG)) {
+ if (!XATTR_VNODE_SUPPORTED(vp)) {
VFS_DEBUG(ctx, vp, "SETATTR - Can't write ACL to file type %d", vnode_vtype(vp));
error = EINVAL;
goto out;
}
/*
- * If we don't have all the extended security items, we need to fetch the existing
- * data to perform a read-modify-write operation.
+ * If we don't have all the extended security items, we need
+ * to fetch the existing data to perform a read-modify-write
+ * operation.
*/
fsec = NULL;
if (!VATTR_IS_ACTIVE(vap, va_acl) ||
}
/* find the ACL */
facl = &fsec->fsec_acl;
-
+
/* if we're using the local filesec, we need to initialise it */
if (fsec == &lfsec) {
fsec->fsec_magic = KAUTH_FILESEC_MAGIC;
}
VATTR_SET_SUPPORTED(vap, va_acl);
}
-
+
/*
- * If the filesec data is all invalid, we can just remove the EA completely.
+ * If the filesec data is all invalid, we can just remove
+ * the EA completely.
*/
if ((facl->acl_entrycount == KAUTH_FILESEC_NOACL) &&
kauth_guid_equal(&fsec->fsec_owner, &kauth_null_guid) &&
kauth_guid_equal(&fsec->fsec_group, &kauth_null_guid)) {
error = vn_removexattr(vp, KAUTH_FILESEC_XATTR, XATTR_NOSECURITY, ctx);
/* no attribute is ok, nothing to delete */
- if (error == ENOATTR)
+ if (error == ENOATTR) {
error = 0;
+ }
VFS_DEBUG(ctx, vp, "SETATTR - remove filesec returning %d", error);
} else {
/* write the EA */
}
/* if we fetched a filesec, dispose of the buffer */
- if (fsec != &lfsec)
+ if (fsec != &lfsec) {
kauth_filesec_free(fsec);
+ }
}
out:
- return(error);
+ return error;
+}
+
+/*
+ * Upcall for a filesystem to tell VFS about an EVFILT_VNODE-type
+ * event on a vnode.
+ */
+int
+vnode_notify(vnode_t vp, uint32_t events, struct vnode_attr *vap)
+{
+ /* These are the same as the corresponding knotes, at least for now. Cheating a little. */
+ uint32_t knote_mask = (VNODE_EVENT_WRITE | VNODE_EVENT_DELETE | VNODE_EVENT_RENAME
+ | VNODE_EVENT_LINK | VNODE_EVENT_EXTEND | VNODE_EVENT_ATTRIB);
+ uint32_t dir_contents_mask = (VNODE_EVENT_DIR_CREATED | VNODE_EVENT_FILE_CREATED
+ | VNODE_EVENT_DIR_REMOVED | VNODE_EVENT_FILE_REMOVED);
+ uint32_t knote_events = (events & knote_mask);
+
+ /* Permissions are not explicitly part of the kqueue model */
+ if (events & VNODE_EVENT_PERMS) {
+ knote_events |= NOTE_ATTRIB;
+ }
+
+ /* Directory contents information just becomes NOTE_WRITE */
+ if ((vnode_isdir(vp)) && (events & dir_contents_mask)) {
+ knote_events |= NOTE_WRITE;
+ }
+
+ if (knote_events) {
+ lock_vnode_and_post(vp, knote_events);
+#if CONFIG_FSE
+ if (vap != NULL) {
+ create_fsevent_from_kevent(vp, events, vap);
+ }
+#else
+ (void)vap;
+#endif
+ }
+
+ return 0;
+}
+
+
+
+int
+vnode_isdyldsharedcache(vnode_t vp)
+{
+ return (vp->v_flag & VSHARED_DYLD) ? 1 : 0;
+}
+
+
+/*
+ * For a filesystem that isn't tracking its own vnode watchers:
+ * check whether a vnode is being monitored.
+ */
+int
+vnode_ismonitored(vnode_t vp)
+{
+ return vp->v_knotes.slh_first != NULL;
+}
+
+int
+vnode_getbackingvnode(vnode_t in_vp, vnode_t* out_vpp)
+{
+ if (out_vpp) {
+ *out_vpp = NULLVP;
+ }
+#if NULLFS
+ return nullfs_getbackingvnode(in_vp, out_vpp);
+#else
+#pragma unused(in_vp)
+ return ENOENT;
+#endif
+}
+
+/*
+ * Initialize a struct vnode_attr and activate the attributes required
+ * by the vnode_notify() call.
+ */
+int
+vfs_get_notify_attributes(struct vnode_attr *vap)
+{
+ VATTR_INIT(vap);
+ vap->va_active = VNODE_NOTIFY_ATTRS;
+ return 0;
+}
+
+#if CONFIG_TRIGGERS
+int
+vfs_settriggercallback(fsid_t *fsid, vfs_trigger_callback_t vtc, void *data, uint32_t flags __unused, vfs_context_t ctx)
+{
+ int error;
+ mount_t mp;
+
+ mp = mount_list_lookupby_fsid(fsid, 0 /* locked */, 1 /* withref */);
+ if (mp == NULL) {
+ return ENOENT;
+ }
+
+ error = vfs_busy(mp, LK_NOWAIT);
+ mount_iterdrop(mp);
+
+ if (error != 0) {
+ return ENOENT;
+ }
+
+ mount_lock(mp);
+ if (mp->mnt_triggercallback != NULL) {
+ error = EBUSY;
+ mount_unlock(mp);
+ goto out;
+ }
+
+ mp->mnt_triggercallback = vtc;
+ mp->mnt_triggerdata = data;
+ mount_unlock(mp);
+
+ mp->mnt_triggercallback(mp, VTC_REPLACE, data, ctx);
+
+out:
+ vfs_unbusy(mp);
+ return 0;
}
+#endif /* CONFIG_TRIGGERS */
/*
* Definition of vnode operations.
#if 0
/*
- *#
- *#% lookup dvp L ? ?
- *#% lookup vpp - L -
- */
+*#
+*#% lookup dvp L ? ?
+*#% lookup vpp - L -
+*/
struct vnop_lookup_args {
struct vnodeop_desc *a_desc;
vnode_t a_dvp;
};
#endif /* 0*/
-errno_t
-VNOP_LOOKUP(vnode_t dvp, vnode_t *vpp, struct componentname *cnp, vfs_context_t context)
+/*
+ * Returns: 0 Success
+ * lock_fsnode:ENOENT No such file or directory [only for VFS
+ * that is not thread safe & vnode is
+ * currently being/has been terminated]
+ * <vfs_lookup>:ENAMETOOLONG
+ * <vfs_lookup>:ENOENT
+ * <vfs_lookup>:EJUSTRETURN
+ * <vfs_lookup>:EPERM
+ * <vfs_lookup>:EISDIR
+ * <vfs_lookup>:ENOTDIR
+ * <vfs_lookup>:???
+ *
+ * Note: The return codes from the underlying VFS's lookup routine can't
+ * be fully enumerated here, since third party VFS authors may not
+ * limit their error returns to the ones documented here, even
+ * though this may result in some programs functioning incorrectly.
+ *
+ * The return codes documented above are those which may currently
+ * be returned by HFS from hfs_lookup, not including additional
+ * error code which may be propagated from underlying routines.
+ */
+errno_t
+VNOP_LOOKUP(vnode_t dvp, vnode_t *vpp, struct componentname *cnp, vfs_context_t ctx)
{
int _err;
struct vnop_lookup_args a;
- vnode_t vp;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_lookup_desc;
a.a_dvp = dvp;
a.a_vpp = vpp;
a.a_cnp = cnp;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(dvp);
+ a.a_context = ctx;
+
+ _err = (*dvp->v_op[vnop_lookup_desc.vdesc_offset])(&a);
+ if (_err == 0 && *vpp) {
+ DTRACE_FSINFO(lookup, vnode_t, *vpp);
+ }
+
+ return _err;
+}
+
+#if 0
+struct vnop_compound_open_args {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_dvp;
+ vnode_t *a_vpp;
+ struct componentname *a_cnp;
+ int32_t a_flags;
+ int32_t a_fmode;
+ struct vnode_attr *a_vap;
+ vfs_context_t a_context;
+ void *a_reserved;
+};
+#endif /* 0 */
+
+int
+VNOP_COMPOUND_OPEN(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, int32_t flags, int32_t fmode, uint32_t *statusp, struct vnode_attr *vap, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_compound_open_args a;
+ int did_create = 0;
+ int want_create;
+ uint32_t tmp_status = 0;
+ struct componentname *cnp = &ndp->ni_cnd;
+
+ want_create = (flags & O_CREAT);
+
+ a.a_desc = &vnop_compound_open_desc;
+ a.a_dvp = dvp;
+ a.a_vpp = vpp; /* Could be NULL */
+ a.a_cnp = cnp;
+ a.a_flags = flags;
+ a.a_fmode = fmode;
+ a.a_status = (statusp != NULL) ? statusp : &tmp_status;
+ a.a_vap = vap;
+ a.a_context = ctx;
+ a.a_open_create_authorizer = vn_authorize_create;
+ a.a_open_existing_authorizer = vn_authorize_open_existing;
+ a.a_reserved = NULL;
- vnode_cache_credentials(dvp, context);
+ if (dvp == NULLVP) {
+ panic("No dvp?");
+ }
+ if (want_create && !vap) {
+ panic("Want create, but no vap?");
+ }
+ if (!want_create && vap) {
+ panic("Don't want create, but have a vap?");
+ }
- if (!thread_safe) {
- if ( (_err = lock_fsnode(dvp, &funnel_state)) ) {
- return (_err);
+ _err = (*dvp->v_op[vnop_compound_open_desc.vdesc_offset])(&a);
+ if (want_create) {
+ if (_err == 0 && *vpp) {
+ DTRACE_FSINFO(compound_open, vnode_t, *vpp);
+ } else {
+ DTRACE_FSINFO(compound_open, vnode_t, dvp);
}
+ } else {
+ DTRACE_FSINFO(compound_open, vnode_t, *vpp);
}
- _err = (*dvp->v_op[vnop_lookup_desc.vdesc_offset])(&a);
- vp = *vpp;
-
- if (!thread_safe) {
- if ( (cnp->cn_flags & ISLASTCN) ) {
- if ( (cnp->cn_flags & LOCKPARENT) ) {
- if ( !(cnp->cn_flags & FSNODELOCKHELD) ) {
- /*
- * leave the fsnode lock held on
- * the directory, but restore the funnel...
- * also indicate that we need to drop the
- * fsnode_lock when we're done with the
- * system call processing for this path
- */
- cnp->cn_flags |= FSNODELOCKHELD;
-
- (void) thread_funnel_set(kernel_flock, funnel_state);
- return (_err);
- }
- }
+ did_create = (*a.a_status & COMPOUND_OPEN_STATUS_DID_CREATE);
+
+ if (did_create && !want_create) {
+ panic("Filesystem did a create, even though none was requested?");
+ }
+
+ if (did_create) {
+#if CONFIG_APPLEDOUBLE
+ if (!NATIVE_XATTR(dvp)) {
+ /*
+ * Remove stale Apple Double file (if any).
+ */
+ xattrfile_remove(dvp, cnp->cn_nameptr, ctx, 0);
}
- unlock_fsnode(dvp, &funnel_state);
+#endif /* CONFIG_APPLEDOUBLE */
+ /* On create, provide kqueue notification */
+ post_event_if_success(dvp, _err, NOTE_WRITE);
+ }
+
+ lookup_compound_vnop_post_hook(_err, dvp, *vpp, ndp, did_create);
+#if 0 /* FSEvents... */
+ if (*vpp && _err && _err != EKEEPLOOKING) {
+ vnode_put(*vpp);
+ *vpp = NULLVP;
}
- return (_err);
+#endif /* 0 */
+
+ return _err;
}
#if 0
-/*
- *#
- *#% create dvp L L L
- *#% create vpp - L -
- *#
- */
-
struct vnop_create_args {
struct vnodeop_desc *a_desc;
vnode_t a_dvp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_CREATE(vnode_t dvp, vnode_t * vpp, struct componentname * cnp, struct vnode_attr * vap, vfs_context_t context)
+errno_t
+VNOP_CREATE(vnode_t dvp, vnode_t * vpp, struct componentname * cnp, struct vnode_attr * vap, vfs_context_t ctx)
{
int _err;
struct vnop_create_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_create_desc;
a.a_dvp = dvp;
a.a_vpp = vpp;
a.a_cnp = cnp;
a.a_vap = vap;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(dvp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(dvp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*dvp->v_op[vnop_create_desc.vdesc_offset])(&a);
+ if (_err == 0 && *vpp) {
+ DTRACE_FSINFO(create, vnode_t, *vpp);
+ }
+
+#if CONFIG_APPLEDOUBLE
if (_err == 0 && !NATIVE_XATTR(dvp)) {
- /*
+ /*
* Remove stale Apple Double file (if any).
*/
- xattrfile_remove(dvp, cnp->cn_nameptr, context, thread_safe, 0);
- }
- if (!thread_safe) {
- unlock_fsnode(dvp, &funnel_state);
+ xattrfile_remove(dvp, cnp->cn_nameptr, ctx, 0);
}
- return (_err);
+#endif /* CONFIG_APPLEDOUBLE */
+
+ post_event_if_success(dvp, _err, NOTE_WRITE);
+
+ return _err;
}
#if 0
/*
- *#
- *#% whiteout dvp L L L
- *#% whiteout cnp - - -
- *#% whiteout flag - - -
- *#
- */
+*#
+*#% whiteout dvp L L L
+*#% whiteout cnp - - -
+*#% whiteout flag - - -
+*#
+*/
struct vnop_whiteout_args {
struct vnodeop_desc *a_desc;
vnode_t a_dvp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_WHITEOUT(vnode_t dvp, struct componentname * cnp, int flags, vfs_context_t context)
+errno_t
+VNOP_WHITEOUT(__unused vnode_t dvp, __unused struct componentname *cnp,
+ __unused int flags, __unused vfs_context_t ctx)
{
- int _err;
- struct vnop_whiteout_args a;
- int thread_safe;
- int funnel_state = 0;
-
- a.a_desc = &vnop_whiteout_desc;
- a.a_dvp = dvp;
- a.a_cnp = cnp;
- a.a_flags = flags;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(dvp);
-
- if (!thread_safe) {
- if ( (_err = lock_fsnode(dvp, &funnel_state)) ) {
- return (_err);
- }
- }
- _err = (*dvp->v_op[vnop_whiteout_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(dvp, &funnel_state);
- }
- return (_err);
+ return ENOTSUP; // XXX OBSOLETE
}
- #if 0
+#if 0
/*
- *#
- *#% mknod dvp L U U
- *#% mknod vpp - X -
- *#
- */
+*#
+*#% mknod dvp L U U
+*#% mknod vpp - X -
+*#
+*/
struct vnop_mknod_args {
- struct vnodeop_desc *a_desc;
- vnode_t a_dvp;
- vnode_t *a_vpp;
- struct componentname *a_cnp;
- struct vnode_attr *a_vap;
- vfs_context_t a_context;
+ struct vnodeop_desc *a_desc;
+ vnode_t a_dvp;
+ vnode_t *a_vpp;
+ struct componentname *a_cnp;
+ struct vnode_attr *a_vap;
+ vfs_context_t a_context;
};
#endif /* 0*/
errno_t
-VNOP_MKNOD(vnode_t dvp, vnode_t * vpp, struct componentname * cnp, struct vnode_attr * vap, vfs_context_t context)
-{
-
- int _err;
- struct vnop_mknod_args a;
- int thread_safe;
- int funnel_state = 0;
-
- a.a_desc = &vnop_mknod_desc;
- a.a_dvp = dvp;
- a.a_vpp = vpp;
- a.a_cnp = cnp;
- a.a_vap = vap;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(dvp);
-
- if (!thread_safe) {
- if ( (_err = lock_fsnode(dvp, &funnel_state)) ) {
- return (_err);
- }
- }
- _err = (*dvp->v_op[vnop_mknod_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(dvp, &funnel_state);
- }
- return (_err);
+VNOP_MKNOD(vnode_t dvp, vnode_t * vpp, struct componentname * cnp, struct vnode_attr * vap, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_mknod_args a;
+
+ a.a_desc = &vnop_mknod_desc;
+ a.a_dvp = dvp;
+ a.a_vpp = vpp;
+ a.a_cnp = cnp;
+ a.a_vap = vap;
+ a.a_context = ctx;
+
+ _err = (*dvp->v_op[vnop_mknod_desc.vdesc_offset])(&a);
+ if (_err == 0 && *vpp) {
+ DTRACE_FSINFO(mknod, vnode_t, *vpp);
+ }
+
+ post_event_if_success(dvp, _err, NOTE_WRITE);
+
+ return _err;
}
#if 0
/*
- *#
- *#% open vp L L L
- *#
- */
+*#
+*#% open vp L L L
+*#
+*/
struct vnop_open_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_OPEN(vnode_t vp, int mode, vfs_context_t context)
+errno_t
+VNOP_OPEN(vnode_t vp, int mode, vfs_context_t ctx)
{
int _err;
struct vnop_open_args a;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
a.a_desc = &vnop_open_desc;
a.a_vp = vp;
a.a_mode = mode;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
-
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- if ( (_err = lock_fsnode(vp, NULL)) ) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- return (_err);
- }
- }
- }
+ a.a_context = ctx;
+
_err = (*vp->v_op[vnop_open_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- unlock_fsnode(vp, NULL);
- }
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(open, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *#% close vp U U U
- *#
- */
+*#
+*#% close vp U U U
+*#
+*/
struct vnop_close_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_CLOSE(vnode_t vp, int fflag, vfs_context_t context)
+errno_t
+VNOP_CLOSE(vnode_t vp, int fflag, vfs_context_t ctx)
{
int _err;
struct vnop_close_args a;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
a.a_desc = &vnop_close_desc;
a.a_vp = vp;
a.a_fflag = fflag;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
-
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- if ( (_err = lock_fsnode(vp, NULL)) ) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- return (_err);
- }
- }
- }
+ a.a_context = ctx;
+
_err = (*vp->v_op[vnop_close_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- unlock_fsnode(vp, NULL);
- }
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(close, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *#% access vp L L L
- *#
- */
+*#
+*#% access vp L L L
+*#
+*/
struct vnop_access_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_ACCESS(vnode_t vp, int action, vfs_context_t context)
+errno_t
+VNOP_ACCESS(vnode_t vp, int action, vfs_context_t ctx)
{
int _err;
struct vnop_access_args a;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
a.a_desc = &vnop_access_desc;
a.a_vp = vp;
a.a_action = action;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_access_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(access, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *#% getattr vp = = =
- *#
- */
+*#
+*#% getattr vp = = =
+*#
+*/
struct vnop_getattr_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_GETATTR(vnode_t vp, struct vnode_attr * vap, vfs_context_t context)
+errno_t
+VNOP_GETATTR(vnode_t vp, struct vnode_attr * vap, vfs_context_t ctx)
{
int _err;
struct vnop_getattr_args a;
- int thread_safe;
- int funnel_state;
a.a_desc = &vnop_getattr_desc;
a.a_vp = vp;
a.a_vap = vap;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_getattr_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(getattr, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *#% setattr vp L L L
- *#
- */
+*#
+*#% setattr vp L L L
+*#
+*/
struct vnop_setattr_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_SETATTR(vnode_t vp, struct vnode_attr * vap, vfs_context_t context)
+errno_t
+VNOP_SETATTR(vnode_t vp, struct vnode_attr * vap, vfs_context_t ctx)
{
int _err;
struct vnop_setattr_args a;
- int thread_safe;
- int funnel_state;
a.a_desc = &vnop_setattr_desc;
a.a_vp = vp;
a.a_vap = vap;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_setattr_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(setattr, vnode_t, vp);
- /*
- * Shadow uid/gid/mod change to extended attibute file.
+#if CONFIG_APPLEDOUBLE
+ /*
+ * Shadow uid/gid/mod change to extended attribute file.
*/
if (_err == 0 && !NATIVE_XATTR(vp)) {
struct vnode_attr va;
change = 1;
}
if (change) {
- vnode_t dvp;
- char *vname;
+ vnode_t dvp;
+ const char *vname;
dvp = vnode_getparent(vp);
vname = vnode_getname(vp);
- xattrfile_setattr(dvp, vname, &va, context, thread_safe);
- if (dvp != NULLVP)
- vnode_put(dvp);
- if (vname != NULL)
- vnode_putname(vname);
+ xattrfile_setattr(dvp, vname, &va, ctx);
+ if (dvp != NULLVP) {
+ vnode_put(dvp);
+ }
+ if (vname != NULL) {
+ vnode_putname(vname);
+ }
}
}
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
-}
-
-#if 0
-/*
- *#
- *#% getattrlist vp = = =
- *#
- */
-struct vnop_getattrlist_args {
- struct vnodeop_desc *a_desc;
- vnode_t a_vp;
- struct attrlist *a_alist;
- struct uio *a_uio;
- int a_options;
- vfs_context_t a_context;
-};
-#endif /* 0*/
-errno_t
-VNOP_GETATTRLIST(vnode_t vp, struct attrlist * alist, struct uio * uio, int options, vfs_context_t context)
-{
- int _err;
- struct vnop_getattrlist_args a;
- int thread_safe;
- int funnel_state = 0;
-
- a.a_desc = &vnop_getattrlist_desc;
- a.a_vp = vp;
- a.a_alist = alist;
- a.a_uio = uio;
- a.a_options = options;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+#endif /* CONFIG_APPLEDOUBLE */
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
+ /*
+ * If we have changed any of the things about the file that are likely
+ * to result in changes to authorization results, blow the vnode auth
+ * cache
+ */
+ if (_err == 0 && (
+ VATTR_IS_SUPPORTED(vap, va_mode) ||
+ VATTR_IS_SUPPORTED(vap, va_uid) ||
+ VATTR_IS_SUPPORTED(vap, va_gid) ||
+ VATTR_IS_SUPPORTED(vap, va_flags) ||
+ VATTR_IS_SUPPORTED(vap, va_acl) ||
+ VATTR_IS_SUPPORTED(vap, va_uuuid) ||
+ VATTR_IS_SUPPORTED(vap, va_guuid))) {
+ vnode_uncache_authorized_action(vp, KAUTH_INVALIDATE_CACHED_RIGHTS);
+
+#if NAMEDSTREAMS
+ if (vfs_authopaque(vp->v_mount) && vnode_hasnamedstreams(vp)) {
+ vnode_t svp;
+ if (vnode_getnamedstream(vp, &svp, XATTR_RESOURCEFORK_NAME, NS_OPEN, 0, ctx) == 0) {
+ vnode_uncache_authorized_action(svp, KAUTH_INVALIDATE_CACHED_RIGHTS);
+ vnode_put(svp);
+ }
}
+#endif /* NAMEDSTREAMS */
}
- _err = (*vp->v_op[vnop_getattrlist_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
-}
-
-#if 0
-/*
- *#
- *#% setattrlist vp L L L
- *#
- */
-struct vnop_setattrlist_args {
- struct vnodeop_desc *a_desc;
- vnode_t a_vp;
- struct attrlist *a_alist;
- struct uio *a_uio;
- int a_options;
- vfs_context_t a_context;
-};
-#endif /* 0*/
-errno_t
-VNOP_SETATTRLIST(vnode_t vp, struct attrlist * alist, struct uio * uio, int options, vfs_context_t context)
-{
- int _err;
- struct vnop_setattrlist_args a;
- int thread_safe;
- int funnel_state = 0;
-
- a.a_desc = &vnop_setattrlist_desc;
- a.a_vp = vp;
- a.a_alist = alist;
- a.a_uio = uio;
- a.a_options = options;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
- _err = (*vp->v_op[vnop_setattrlist_desc.vdesc_offset])(&a);
- vnode_uncache_credentials(vp);
+ post_event_if_success(vp, _err, NOTE_ATTRIB);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ return _err;
}
#if 0
/*
- *#
- *#% read vp L L L
- *#
- */
+*#
+*#% read vp L L L
+*#
+*/
struct vnop_read_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_READ(vnode_t vp, struct uio * uio, int ioflag, vfs_context_t context)
+errno_t
+VNOP_READ(vnode_t vp, struct uio * uio, int ioflag, vfs_context_t ctx)
{
int _err;
struct vnop_read_args a;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
+#if CONFIG_DTRACE
+ user_ssize_t resid = uio_resid(uio);
+#endif
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if (ctx == NULL) {
+ return EINVAL;
}
a.a_desc = &vnop_read_desc;
a.a_vp = vp;
a.a_uio = uio;
a.a_ioflag = ioflag;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
-
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- if ( (_err = lock_fsnode(vp, NULL)) ) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- return (_err);
- }
- }
- }
+ a.a_context = ctx;
+
_err = (*vp->v_op[vnop_read_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO_IO(read,
+ vnode_t, vp, user_ssize_t, (resid - uio_resid(uio)));
- if (!thread_safe) {
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- unlock_fsnode(vp, NULL);
- }
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+ return _err;
}
#if 0
/*
- *#
- *#% write vp L L L
- *#
- */
+*#
+*#% write vp L L L
+*#
+*/
struct vnop_write_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_WRITE(vnode_t vp, struct uio * uio, int ioflag, vfs_context_t context)
+errno_t
+VNOP_WRITE(vnode_t vp, struct uio * uio, int ioflag, vfs_context_t ctx)
{
struct vnop_write_args a;
int _err;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
+#if CONFIG_DTRACE
+ user_ssize_t resid = uio_resid(uio);
+#endif
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if (ctx == NULL) {
+ return EINVAL;
}
a.a_desc = &vnop_write_desc;
a.a_vp = vp;
a.a_uio = uio;
a.a_ioflag = ioflag;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
-
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- if ( (_err = lock_fsnode(vp, NULL)) ) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- return (_err);
- }
- }
- }
+ a.a_context = ctx;
+
_err = (*vp->v_op[vnop_write_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO_IO(write,
+ vnode_t, vp, user_ssize_t, (resid - uio_resid(uio)));
- if (!thread_safe) {
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- unlock_fsnode(vp, NULL);
- }
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+ post_event_if_success(vp, _err, NOTE_WRITE);
+
+ return _err;
}
#if 0
/*
- *#
- *#% ioctl vp U U U
- *#
- */
+*#
+*#% ioctl vp U U U
+*#
+*/
struct vnop_ioctl_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_IOCTL(vnode_t vp, u_long command, caddr_t data, int fflag, vfs_context_t context)
+errno_t
+VNOP_IOCTL(vnode_t vp, u_long command, caddr_t data, int fflag, vfs_context_t ctx)
{
int _err;
struct vnop_ioctl_args a;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
- if (vfs_context_is64bit(context)) {
- if (!vnode_vfs64bitready(vp)) {
- return(ENOTTY);
+ /*
+ * This check should probably have been put in the TTY code instead...
+ *
+ * We have to be careful about what we assume during startup and shutdown.
+ * We have to be able to use the root filesystem's device vnode even when
+ * devfs isn't mounted (yet/anymore), so we can't go looking at its mount
+ * structure. If there is no data pointer, it doesn't matter whether
+ * the device is 64-bit ready. Any command (like DKIOCSYNCHRONIZE)
+ * which passes NULL for its data pointer can therefore be used during
+ * mount or unmount of the root filesystem.
+ *
+ * Depending on what root filesystems need to do during mount/unmount, we
+ * may need to loosen this check again in the future.
+ */
+ if (vfs_context_is64bit(ctx) && !(vnode_ischr(vp) || vnode_isblk(vp))) {
+ if (data != NULL && !vnode_vfs64bitready(vp)) {
+ return ENOTTY;
}
}
+ if ((command == DKIOCISSOLIDSTATE) && (vp == rootvp) && rootvp_is_ssd && data) {
+ *data = 1;
+ return 0;
+ }
+
a.a_desc = &vnop_ioctl_desc;
a.a_vp = vp;
a.a_command = command;
a.a_data = data;
a.a_fflag = fflag;
- a.a_context= context;
- thread_safe = THREAD_SAFE_FS(vp);
-
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- if ( (_err = lock_fsnode(vp, NULL)) ) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- return (_err);
- }
- }
- }
+ a.a_context = ctx;
+
_err = (*vp->v_op[vnop_ioctl_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- unlock_fsnode(vp, NULL);
- }
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(ioctl, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *#% select vp U U U
- *#
- */
+*#
+*#% select vp U U U
+*#
+*/
struct vnop_select_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_SELECT(vnode_t vp, int which , int fflags, void * wql, vfs_context_t context)
+errno_t
+VNOP_SELECT(vnode_t vp, int which, int fflags, void * wql, vfs_context_t ctx)
{
int _err;
struct vnop_select_args a;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
a.a_desc = &vnop_select_desc;
a.a_vp = vp;
a.a_which = which;
a.a_fflags = fflags;
- a.a_context = context;
+ a.a_context = ctx;
a.a_wql = wql;
- thread_safe = THREAD_SAFE_FS(vp);
-
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- if ( (_err = lock_fsnode(vp, NULL)) ) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- return (_err);
- }
- }
- }
+
_err = (*vp->v_op[vnop_select_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- if (vp->v_type != VCHR && vp->v_type != VFIFO && vp->v_type != VSOCK) {
- unlock_fsnode(vp, NULL);
- }
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(select, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *#% exchange fvp L L L
- *#% exchange tvp L L L
- *#
- */
+*#
+*#% exchange fvp L L L
+*#% exchange tvp L L L
+*#
+*/
struct vnop_exchange_args {
struct vnodeop_desc *a_desc;
vnode_t a_fvp;
- vnode_t a_tvp;
- int a_options;
+ vnode_t a_tvp;
+ int a_options;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_EXCHANGE(vnode_t fvp, vnode_t tvp, int options, vfs_context_t context)
+errno_t
+VNOP_EXCHANGE(vnode_t fvp, vnode_t tvp, int options, vfs_context_t ctx)
{
int _err;
struct vnop_exchange_args a;
- int thread_safe;
- int funnel_state = 0;
- vnode_t lock_first = NULL, lock_second = NULL;
a.a_desc = &vnop_exchange_desc;
a.a_fvp = fvp;
a.a_tvp = tvp;
a.a_options = options;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(fvp);
+ a.a_context = ctx;
- if (!thread_safe) {
- /*
- * Lock in vnode address order to avoid deadlocks
- */
- if (fvp < tvp) {
- lock_first = fvp;
- lock_second = tvp;
- } else {
- lock_first = tvp;
- lock_second = fvp;
- }
- if ( (_err = lock_fsnode(lock_first, &funnel_state)) ) {
- return (_err);
- }
- if ( (_err = lock_fsnode(lock_second, NULL)) ) {
- unlock_fsnode(lock_first, &funnel_state);
- return (_err);
- }
- }
_err = (*fvp->v_op[vnop_exchange_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(lock_second, NULL);
- unlock_fsnode(lock_first, &funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(exchange, vnode_t, fvp);
+
+ /* Don't post NOTE_WRITE because file descriptors follow the data ... */
+ post_event_if_success(fvp, _err, NOTE_ATTRIB);
+ post_event_if_success(tvp, _err, NOTE_ATTRIB);
+
+ return _err;
}
#if 0
/*
- *#
- *#% revoke vp U U U
- *#
- */
+*#
+*#% revoke vp U U U
+*#
+*/
struct vnop_revoke_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_REVOKE(vnode_t vp, int flags, vfs_context_t context)
+errno_t
+VNOP_REVOKE(vnode_t vp, int flags, vfs_context_t ctx)
{
struct vnop_revoke_args a;
int _err;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_revoke_desc;
a.a_vp = vp;
a.a_flags = flags;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
_err = (*vp->v_op[vnop_revoke_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(revoke, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *# mmap - vp U U U
- *#
- */
+*#
+*# mmap_check - vp U U U
+*#
+*/
+struct vnop_mmap_check_args {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_vp;
+ int a_flags;
+ vfs_context_t a_context;
+};
+#endif /* 0 */
+errno_t
+VNOP_MMAP_CHECK(vnode_t vp, int flags, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_mmap_check_args a;
+
+ a.a_desc = &vnop_mmap_check_desc;
+ a.a_vp = vp;
+ a.a_flags = flags;
+ a.a_context = ctx;
+
+ _err = (*vp->v_op[vnop_mmap_check_desc.vdesc_offset])(&a);
+ if (_err == ENOTSUP) {
+ _err = 0;
+ }
+ DTRACE_FSINFO(mmap_check, vnode_t, vp);
+
+ return _err;
+}
+
+#if 0
+/*
+*#
+*# mmap - vp U U U
+*#
+*/
struct vnop_mmap_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_MMAP(vnode_t vp, int fflags, vfs_context_t context)
+errno_t
+VNOP_MMAP(vnode_t vp, int fflags, vfs_context_t ctx)
{
int _err;
struct vnop_mmap_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_mmap_desc;
a.a_vp = vp;
a.a_fflags = fflags;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_mmap_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(mmap, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *# mnomap - vp U U U
- *#
- */
+*#
+*# mnomap - vp U U U
+*#
+*/
struct vnop_mnomap_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_MNOMAP(vnode_t vp, vfs_context_t context)
+errno_t
+VNOP_MNOMAP(vnode_t vp, vfs_context_t ctx)
{
int _err;
struct vnop_mnomap_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_mnomap_desc;
a.a_vp = vp;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_mnomap_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(mnomap, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *#% fsync vp L L L
- *#
- */
+*#
+*#% fsync vp L L L
+*#
+*/
struct vnop_fsync_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_FSYNC(vnode_t vp, int waitfor, vfs_context_t context)
+errno_t
+VNOP_FSYNC(vnode_t vp, int waitfor, vfs_context_t ctx)
{
struct vnop_fsync_args a;
int _err;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_fsync_desc;
a.a_vp = vp;
a.a_waitfor = waitfor;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_fsync_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(fsync, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *#% remove dvp L U U
- *#% remove vp L U U
- *#
- */
+*#
+*#% remove dvp L U U
+*#% remove vp L U U
+*#
+*/
struct vnop_remove_args {
struct vnodeop_desc *a_desc;
vnode_t a_dvp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_REMOVE(vnode_t dvp, vnode_t vp, struct componentname * cnp, int flags, vfs_context_t context)
+errno_t
+VNOP_REMOVE(vnode_t dvp, vnode_t vp, struct componentname * cnp, int flags, vfs_context_t ctx)
{
int _err;
struct vnop_remove_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_remove_desc;
a.a_dvp = dvp;
a.a_vp = vp;
a.a_cnp = cnp;
a.a_flags = flags;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(dvp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*dvp->v_op[vnop_remove_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(remove, vnode_t, vp);
if (_err == 0) {
- vnode_setneedinactive(vp);
+ vnode_setneedinactive(vp);
+#if CONFIG_APPLEDOUBLE
+ if (!(NATIVE_XATTR(dvp))) {
+ /*
+ * Remove any associated extended attribute file (._ AppleDouble file).
+ */
+ xattrfile_remove(dvp, cnp->cn_nameptr, ctx, 1);
+ }
+#endif /* CONFIG_APPLEDOUBLE */
+ }
+
+ post_event_if_success(vp, _err, NOTE_DELETE | NOTE_LINK);
+ post_event_if_success(dvp, _err, NOTE_WRITE);
+
+ return _err;
+}
+
+int
+VNOP_COMPOUND_REMOVE(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, int32_t flags, struct vnode_attr *vap, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_compound_remove_args a;
+ int no_vp = (*vpp == NULLVP);
+
+ a.a_desc = &vnop_compound_remove_desc;
+ a.a_dvp = dvp;
+ a.a_vpp = vpp;
+ a.a_cnp = &ndp->ni_cnd;
+ a.a_flags = flags;
+ a.a_vap = vap;
+ a.a_context = ctx;
+ a.a_remove_authorizer = vn_authorize_unlink;
- if ( !(NATIVE_XATTR(dvp)) ) {
- /*
- * Remove any associated extended attibute file (._ AppleDouble file).
+ _err = (*dvp->v_op[vnop_compound_remove_desc.vdesc_offset])(&a);
+ if (_err == 0 && *vpp) {
+ DTRACE_FSINFO(compound_remove, vnode_t, *vpp);
+ } else {
+ DTRACE_FSINFO(compound_remove, vnode_t, dvp);
+ }
+ if (_err == 0) {
+ vnode_setneedinactive(*vpp);
+#if CONFIG_APPLEDOUBLE
+ if (!(NATIVE_XATTR(dvp))) {
+ /*
+ * Remove any associated extended attribute file (._ AppleDouble file).
*/
- xattrfile_remove(dvp, cnp->cn_nameptr, context, thread_safe, 1);
+ xattrfile_remove(dvp, ndp->ni_cnd.cn_nameptr, ctx, 1);
}
+#endif /* CONFIG_APPLEDOUBLE */
}
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
+
+ post_event_if_success(*vpp, _err, NOTE_DELETE | NOTE_LINK);
+ post_event_if_success(dvp, _err, NOTE_WRITE);
+
+ if (no_vp) {
+ lookup_compound_vnop_post_hook(_err, dvp, *vpp, ndp, 0);
+ if (*vpp && _err && _err != EKEEPLOOKING) {
+ vnode_put(*vpp);
+ *vpp = NULLVP;
+ }
}
- return (_err);
-}
+ //printf("VNOP_COMPOUND_REMOVE() returning %d\n", _err);
+
+ return _err;
+}
#if 0
/*
- *#
- *#% link vp U U U
- *#% link tdvp L U U
- *#
- */
+*#
+*#% link vp U U U
+*#% link tdvp L U U
+*#
+*/
struct vnop_link_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_LINK(vnode_t vp, vnode_t tdvp, struct componentname * cnp, vfs_context_t context)
+errno_t
+VNOP_LINK(vnode_t vp, vnode_t tdvp, struct componentname * cnp, vfs_context_t ctx)
{
int _err;
struct vnop_link_args a;
- int thread_safe;
- int funnel_state = 0;
+#if CONFIG_APPLEDOUBLE
/*
* For file systems with non-native extended attributes,
* disallow linking to an existing "._" Apple Double file.
*/
- if ( !NATIVE_XATTR(tdvp) && (vp->v_type == VREG)) {
- char *vname;
+ if (!NATIVE_XATTR(tdvp) && (vp->v_type == VREG)) {
+ const char *vname;
vname = vnode_getname(vp);
if (vname != NULL) {
_err = EPERM;
}
vnode_putname(vname);
- if (_err)
- return (_err);
+ if (_err) {
+ return _err;
+ }
}
}
+#endif /* CONFIG_APPLEDOUBLE */
+
a.a_desc = &vnop_link_desc;
a.a_vp = vp;
a.a_tdvp = tdvp;
a.a_cnp = cnp;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*tdvp->v_op[vnop_link_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
-}
+ DTRACE_FSINFO(link, vnode_t, vp);
+ post_event_if_success(vp, _err, NOTE_LINK);
+ post_event_if_success(tdvp, _err, NOTE_WRITE);
+
+ return _err;
+}
-#if 0
-/*
- *#
- *#% rename fdvp U U U
- *#% rename fvp U U U
- *#% rename tdvp L U U
- *#% rename tvp X U U
- *#
- */
-struct vnop_rename_args {
- struct vnodeop_desc *a_desc;
- vnode_t a_fdvp;
- vnode_t a_fvp;
- struct componentname *a_fcnp;
- vnode_t a_tdvp;
- vnode_t a_tvp;
- struct componentname *a_tcnp;
- vfs_context_t a_context;
-};
-#endif /* 0*/
errno_t
-VNOP_RENAME(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp,
- struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp,
- vfs_context_t context)
+vn_rename(struct vnode *fdvp, struct vnode **fvpp, struct componentname *fcnp, struct vnode_attr *fvap,
+ struct vnode *tdvp, struct vnode **tvpp, struct componentname *tcnp, struct vnode_attr *tvap,
+ vfs_rename_flags_t flags, vfs_context_t ctx)
{
int _err;
- struct vnop_rename_args a;
- int funnel_state = 0;
+ struct nameidata *fromnd = NULL;
+ struct nameidata *tond = NULL;
+#if CONFIG_APPLEDOUBLE
+ vnode_t src_attr_vp = NULLVP;
+ vnode_t dst_attr_vp = NULLVP;
char smallname1[48];
char smallname2[48];
char *xfromname = NULL;
char *xtoname = NULL;
- vnode_t lock_first = NULL, lock_second = NULL;
- vnode_t fdvp_unsafe = NULLVP;
- vnode_t tdvp_unsafe = NULLVP;
-
- a.a_desc = &vnop_rename_desc;
- a.a_fdvp = fdvp;
- a.a_fvp = fvp;
- a.a_fcnp = fcnp;
- a.a_tdvp = tdvp;
- a.a_tvp = tvp;
- a.a_tcnp = tcnp;
- a.a_context = context;
-
- if (!THREAD_SAFE_FS(fdvp))
- fdvp_unsafe = fdvp;
- if (!THREAD_SAFE_FS(tdvp))
- tdvp_unsafe = tdvp;
-
- if (fdvp_unsafe != NULLVP) {
- /*
- * Lock parents in vnode address order to avoid deadlocks
- * note that it's possible for the fdvp to be unsafe,
- * but the tdvp to be safe because tvp could be a directory
- * in the root of a filesystem... in that case, tdvp is the
- * in the filesystem that this root is mounted on
- */
- if (tdvp_unsafe == NULL || fdvp_unsafe == tdvp_unsafe) {
- lock_first = fdvp_unsafe;
- lock_second = NULL;
- } else if (fdvp_unsafe < tdvp_unsafe) {
- lock_first = fdvp_unsafe;
- lock_second = tdvp_unsafe;
- } else {
- lock_first = tdvp_unsafe;
- lock_second = fdvp_unsafe;
- }
- if ( (_err = lock_fsnode(lock_first, &funnel_state)) )
- return (_err);
+#endif /* CONFIG_APPLEDOUBLE */
+ int batched;
+ uint32_t tdfflags; // Target directory file flags
- if (lock_second != NULL && (_err = lock_fsnode(lock_second, NULL))) {
- unlock_fsnode(lock_first, &funnel_state);
- return (_err);
- }
-
- /*
- * Lock both children in vnode address order to avoid deadlocks
- */
- if (tvp == NULL || tvp == fvp) {
- lock_first = fvp;
- lock_second = NULL;
- } else if (fvp < tvp) {
- lock_first = fvp;
- lock_second = tvp;
- } else {
- lock_first = tvp;
- lock_second = fvp;
- }
- if ( (_err = lock_fsnode(lock_first, NULL)) )
- goto out1;
+ batched = vnode_compound_rename_available(fdvp);
- if (lock_second != NULL && (_err = lock_fsnode(lock_second, NULL))) {
- unlock_fsnode(lock_first, NULL);
- goto out1;
+ if (!batched) {
+ if (*fvpp == NULLVP) {
+ panic("Not batched, and no fvp?");
}
}
- /*
- * Save source and destination names (._ AppleDouble files).
- * Skip if source already has a "._" prefix.
+
+#if CONFIG_APPLEDOUBLE
+ /*
+ * We need to preflight any potential AppleDouble file for the source file
+ * before doing the rename operation, since we could potentially be doing
+ * this operation on a network filesystem, and would end up duplicating
+ * the work. Also, save the source and destination names. Skip it if the
+ * source has a "._" prefix.
*/
+
+ size_t xfromname_len = 0;
+ size_t xtoname_len = 0;
if (!NATIVE_XATTR(fdvp) &&
!(fcnp->cn_nameptr[0] == '.' && fcnp->cn_nameptr[1] == '_')) {
- size_t len;
+ int error;
/* Get source attribute file name. */
- len = fcnp->cn_namelen + 3;
- if (len > sizeof(smallname1)) {
- MALLOC(xfromname, char *, len, M_TEMP, M_WAITOK);
+ xfromname_len = fcnp->cn_namelen + 3;
+ if (xfromname_len > sizeof(smallname1)) {
+ xfromname = kheap_alloc(KHEAP_TEMP, xfromname_len, Z_WAITOK);
} else {
xfromname = &smallname1[0];
}
- strcpy(xfromname, "._");
- strncat(xfromname, fcnp->cn_nameptr, fcnp->cn_namelen);
- xfromname[len-1] = '\0';
+ strlcpy(xfromname, "._", xfromname_len);
+ strlcat(xfromname, fcnp->cn_nameptr, xfromname_len);
/* Get destination attribute file name. */
- len = tcnp->cn_namelen + 3;
- if (len > sizeof(smallname2)) {
- MALLOC(xtoname, char *, len, M_TEMP, M_WAITOK);
+ xtoname_len = tcnp->cn_namelen + 3;
+ if (xtoname_len > sizeof(smallname2)) {
+ xtoname = kheap_alloc(KHEAP_TEMP, xtoname_len, Z_WAITOK);
} else {
xtoname = &smallname2[0];
}
- strcpy(xtoname, "._");
- strncat(xtoname, tcnp->cn_nameptr, tcnp->cn_namelen);
- xtoname[len-1] = '\0';
- }
+ strlcpy(xtoname, "._", xtoname_len);
+ strlcat(xtoname, tcnp->cn_nameptr, xtoname_len);
- _err = (*fdvp->v_op[vnop_rename_desc.vdesc_offset])(&a);
+ /*
+ * Look up source attribute file, keep reference on it if exists.
+ * Note that we do the namei with the nameiop of RENAME, which is different than
+ * in the rename syscall. It's OK if the source file does not exist, since this
+ * is only for AppleDouble files.
+ */
+ fromnd = kheap_alloc(KHEAP_TEMP, sizeof(struct nameidata), Z_WAITOK);
+ NDINIT(fromnd, RENAME, OP_RENAME, NOFOLLOW | USEDVP | CN_NBMOUNTLOOK,
+ UIO_SYSSPACE, CAST_USER_ADDR_T(xfromname), ctx);
+ fromnd->ni_dvp = fdvp;
+ error = namei(fromnd);
+
+ /*
+ * If there was an error looking up source attribute file,
+ * we'll behave as if it didn't exist.
+ */
+
+ if (error == 0) {
+ if (fromnd->ni_vp) {
+ /* src_attr_vp indicates need to call vnode_put / nameidone later */
+ src_attr_vp = fromnd->ni_vp;
+
+ if (fromnd->ni_vp->v_type != VREG) {
+ src_attr_vp = NULLVP;
+ vnode_put(fromnd->ni_vp);
+ }
+ }
+ /*
+ * Either we got an invalid vnode type (not a regular file) or the namei lookup
+ * suppressed ENOENT as a valid error since we're renaming. Either way, we don't
+ * have a vnode here, so we drop our namei buffer for the source attribute file
+ */
+ if (src_attr_vp == NULLVP) {
+ nameidone(fromnd);
+ }
+ }
+ }
+#endif /* CONFIG_APPLEDOUBLE */
+
+ if (batched) {
+ _err = VNOP_COMPOUND_RENAME(fdvp, fvpp, fcnp, fvap, tdvp, tvpp, tcnp, tvap, flags, ctx);
+ if (_err != 0) {
+ printf("VNOP_COMPOUND_RENAME() returned %d\n", _err);
+ }
+ } else {
+ if (flags) {
+ _err = VNOP_RENAMEX(fdvp, *fvpp, fcnp, tdvp, *tvpp, tcnp, flags, ctx);
+ if (_err == ENOTSUP && flags == VFS_RENAME_SECLUDE) {
+ // Legacy...
+ if ((*fvpp)->v_mount->mnt_vtable->vfc_vfsflags & VFC_VFSVNOP_SECLUDE_RENAME) {
+ fcnp->cn_flags |= CN_SECLUDE_RENAME;
+ _err = VNOP_RENAME(fdvp, *fvpp, fcnp, tdvp, *tvpp, tcnp, ctx);
+ }
+ }
+ } else {
+ _err = VNOP_RENAME(fdvp, *fvpp, fcnp, tdvp, *tvpp, tcnp, ctx);
+ }
+ }
- if (fdvp_unsafe != NULLVP) {
- if (lock_second != NULL)
- unlock_fsnode(lock_second, NULL);
- unlock_fsnode(lock_first, NULL);
+ /*
+ * If moved to a new directory that is restricted,
+ * set the restricted flag on the item moved.
+ */
+ if (_err == 0) {
+ _err = vnode_flags(tdvp, &tdfflags, ctx);
+ if (_err == 0) {
+ uint32_t inherit_flags = tdfflags & (UF_DATAVAULT | SF_RESTRICTED);
+ if (inherit_flags) {
+ uint32_t fflags;
+ _err = vnode_flags(*fvpp, &fflags, ctx);
+ if (_err == 0 && fflags != (fflags | inherit_flags)) {
+ struct vnode_attr va;
+ VATTR_INIT(&va);
+ VATTR_SET(&va, va_flags, fflags | inherit_flags);
+ _err = vnode_setattr(*fvpp, &va, ctx);
+ }
+ }
+ }
}
+
+#if CONFIG_MACF
if (_err == 0) {
- if (tvp && tvp != fvp)
- vnode_setneedinactive(tvp);
+ mac_vnode_notify_rename(ctx, *fvpp, tdvp, tcnp);
+ if (flags & VFS_RENAME_SWAP) {
+ mac_vnode_notify_rename(ctx, *tvpp, fdvp, fcnp);
+ }
}
+#endif
- /*
- * Rename any associated extended attibute file (._ AppleDouble file).
+#if CONFIG_APPLEDOUBLE
+ /*
+ * Rename any associated extended attribute file (._ AppleDouble file).
*/
if (_err == 0 && !NATIVE_XATTR(fdvp) && xfromname != NULL) {
- struct nameidata fromnd, tond;
- int killdest = 0;
- int error;
+ int error = 0;
/*
- * Get source attribute file vnode.
- * Note that fdvp already has an iocount reference and
- * using DELETE will take an additional reference.
+ * Get destination attribute file vnode.
+ * Note that tdvp already has an iocount reference. Make sure to check that we
+ * get a valid vnode from namei.
*/
- NDINIT(&fromnd, DELETE, NOFOLLOW | USEDVP, UIO_SYSSPACE,
- CAST_USER_ADDR_T(xfromname), context);
- fromnd.ni_dvp = fdvp;
- error = namei(&fromnd);
+ tond = kheap_alloc(KHEAP_TEMP, sizeof(struct nameidata), Z_WAITOK);
+ NDINIT(tond, RENAME, OP_RENAME,
+ NOCACHE | NOFOLLOW | USEDVP | CN_NBMOUNTLOOK, UIO_SYSSPACE,
+ CAST_USER_ADDR_T(xtoname), ctx);
+ tond->ni_dvp = tdvp;
+ error = namei(tond);
if (error) {
- /* When source doesn't exist there still may be a destination. */
- if (error == ENOENT) {
- killdest = 1;
+ goto ad_error;
+ }
+
+ if (tond->ni_vp) {
+ dst_attr_vp = tond->ni_vp;
+ }
+
+ if (src_attr_vp) {
+ const char *old_name = src_attr_vp->v_name;
+ vnode_t old_parent = src_attr_vp->v_parent;
+
+ if (batched) {
+ error = VNOP_COMPOUND_RENAME(fdvp, &src_attr_vp, &fromnd->ni_cnd, NULL,
+ tdvp, &dst_attr_vp, &tond->ni_cnd, NULL,
+ 0, ctx);
} else {
- goto out;
+ error = VNOP_RENAME(fdvp, src_attr_vp, &fromnd->ni_cnd,
+ tdvp, dst_attr_vp, &tond->ni_cnd, ctx);
}
- } else if (fromnd.ni_vp->v_type != VREG) {
- vnode_put(fromnd.ni_vp);
- nameidone(&fromnd);
- killdest = 1;
- }
- if (killdest) {
- struct vnop_remove_args args;
+ if (error == 0 && old_name == src_attr_vp->v_name &&
+ old_parent == src_attr_vp->v_parent) {
+ int update_flags = VNODE_UPDATE_NAME;
+
+ if (fdvp != tdvp) {
+ update_flags |= VNODE_UPDATE_PARENT;
+ }
+
+ if ((src_attr_vp->v_mount->mnt_vtable->vfc_vfsflags & VFC_VFSVNOP_NOUPDATEID_RENAME) == 0) {
+ vnode_update_identity(src_attr_vp, tdvp,
+ tond->ni_cnd.cn_nameptr,
+ tond->ni_cnd.cn_namelen,
+ tond->ni_cnd.cn_hash,
+ update_flags);
+ }
+ }
+
+ /* kevent notifications for moving resource files
+ * _err is zero if we're here, so no need to notify directories, code
+ * below will do that. only need to post the rename on the source and
+ * possibly a delete on the dest
+ */
+ post_event_if_success(src_attr_vp, error, NOTE_RENAME);
+ if (dst_attr_vp) {
+ post_event_if_success(dst_attr_vp, error, NOTE_DELETE);
+ }
+ } else if (dst_attr_vp) {
/*
- * Get destination attribute file vnode.
+ * Just delete destination attribute file vnode if it exists, since
+ * we didn't have a source attribute file.
* Note that tdvp already has an iocount reference.
*/
- NDINIT(&tond, DELETE, NOFOLLOW | USEDVP, UIO_SYSSPACE,
- CAST_USER_ADDR_T(xtoname), context);
- tond.ni_dvp = tdvp;
- error = namei(&tond);
- if (error) {
- goto out;
- }
- if (tond.ni_vp->v_type != VREG) {
- vnode_put(tond.ni_vp);
- nameidone(&tond);
- goto out;
- }
+
+ struct vnop_remove_args args;
+
args.a_desc = &vnop_remove_desc;
args.a_dvp = tdvp;
- args.a_vp = tond.ni_vp;
- args.a_cnp = &tond.ni_cnd;
- args.a_context = context;
+ args.a_vp = dst_attr_vp;
+ args.a_cnp = &tond->ni_cnd;
+ args.a_context = ctx;
- if (fdvp_unsafe != NULLVP)
- error = lock_fsnode(tond.ni_vp, NULL);
if (error == 0) {
- error = (*tdvp->v_op[vnop_remove_desc.vdesc_offset])(&args);
+ error = (*tdvp->v_op[vnop_remove_desc.vdesc_offset])(&args);
- if (fdvp_unsafe != NULLVP)
- unlock_fsnode(tond.ni_vp, NULL);
-
- if (error == 0)
- vnode_setneedinactive(tond.ni_vp);
+ if (error == 0) {
+ vnode_setneedinactive(dst_attr_vp);
+ }
}
- vnode_put(tond.ni_vp);
- nameidone(&tond);
- goto out;
+
+ /* kevent notification for deleting the destination's attribute file
+ * if it existed. Only need to post the delete on the destination, since
+ * the code below will handle the directories.
+ */
+ post_event_if_success(dst_attr_vp, error, NOTE_DELETE);
}
+ }
+ad_error:
+ if (src_attr_vp) {
+ vnode_put(src_attr_vp);
+ nameidone(fromnd);
+ }
+ if (dst_attr_vp) {
+ vnode_put(dst_attr_vp);
+ nameidone(tond);
+ }
+ if (xfromname && xfromname != &smallname1[0]) {
+ kheap_free(KHEAP_TEMP, xfromname, xfromname_len);
+ }
+ if (xtoname && xtoname != &smallname2[0]) {
+ kheap_free(KHEAP_TEMP, xtoname, xtoname_len);
+ }
+#endif /* CONFIG_APPLEDOUBLE */
+ kheap_free(KHEAP_TEMP, fromnd, sizeof(struct nameidata));
+ kheap_free(KHEAP_TEMP, tond, sizeof(struct nameidata));
+ return _err;
+}
- /*
- * Get destination attribute file vnode.
+
+#if 0
+/*
+*#
+*#% rename fdvp U U U
+*#% rename fvp U U U
+*#% rename tdvp L U U
+*#% rename tvp X U U
+*#
+*/
+struct vnop_rename_args {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_fdvp;
+ vnode_t a_fvp;
+ struct componentname *a_fcnp;
+ vnode_t a_tdvp;
+ vnode_t a_tvp;
+ struct componentname *a_tcnp;
+ vfs_context_t a_context;
+};
+#endif /* 0*/
+errno_t
+VNOP_RENAME(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp,
+ struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp,
+ vfs_context_t ctx)
+{
+ int _err = 0;
+ struct vnop_rename_args a;
+
+ a.a_desc = &vnop_rename_desc;
+ a.a_fdvp = fdvp;
+ a.a_fvp = fvp;
+ a.a_fcnp = fcnp;
+ a.a_tdvp = tdvp;
+ a.a_tvp = tvp;
+ a.a_tcnp = tcnp;
+ a.a_context = ctx;
+
+ /* do the rename of the main file. */
+ _err = (*fdvp->v_op[vnop_rename_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(rename, vnode_t, fdvp);
+
+ if (_err) {
+ return _err;
+ }
+
+ return post_rename(fdvp, fvp, tdvp, tvp);
+}
+
+static errno_t
+post_rename(vnode_t fdvp, vnode_t fvp, vnode_t tdvp, vnode_t tvp)
+{
+ if (tvp && tvp != fvp) {
+ vnode_setneedinactive(tvp);
+ }
+
+ /* Wrote at least one directory. If transplanted a dir, also changed link counts */
+ int events = NOTE_WRITE;
+ if (vnode_isdir(fvp)) {
+ /* Link count on dir changed only if we are moving a dir and...
+ * --Moved to new dir, not overwriting there
+ * --Kept in same dir and DID overwrite
*/
- NDINIT(&tond, RENAME,
- NOCACHE | NOFOLLOW | USEDVP, UIO_SYSSPACE,
- CAST_USER_ADDR_T(xtoname), context);
- tond.ni_dvp = tdvp;
- error = namei(&tond);
+ if (((fdvp != tdvp) && (!tvp)) || ((fdvp == tdvp) && (tvp))) {
+ events |= NOTE_LINK;
+ }
+ }
- if (error) {
- vnode_put(fromnd.ni_vp);
- nameidone(&fromnd);
- goto out;
+ lock_vnode_and_post(fdvp, events);
+ if (fdvp != tdvp) {
+ lock_vnode_and_post(tdvp, events);
+ }
+
+ /* If you're replacing the target, post a deletion for it */
+ if (tvp) {
+ lock_vnode_and_post(tvp, NOTE_DELETE);
+ }
+
+ lock_vnode_and_post(fvp, NOTE_RENAME);
+
+ return 0;
+}
+
+#if 0
+/*
+*#
+*#% renamex fdvp U U U
+*#% renamex fvp U U U
+*#% renamex tdvp L U U
+*#% renamex tvp X U U
+*#
+*/
+struct vnop_renamex_args {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_fdvp;
+ vnode_t a_fvp;
+ struct componentname *a_fcnp;
+ vnode_t a_tdvp;
+ vnode_t a_tvp;
+ struct componentname *a_tcnp;
+ vfs_rename_flags_t a_flags;
+ vfs_context_t a_context;
+};
+#endif /* 0*/
+errno_t
+VNOP_RENAMEX(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp,
+ struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp,
+ vfs_rename_flags_t flags, vfs_context_t ctx)
+{
+ int _err = 0;
+ struct vnop_renamex_args a;
+
+ a.a_desc = &vnop_renamex_desc;
+ a.a_fdvp = fdvp;
+ a.a_fvp = fvp;
+ a.a_fcnp = fcnp;
+ a.a_tdvp = tdvp;
+ a.a_tvp = tvp;
+ a.a_tcnp = tcnp;
+ a.a_flags = flags;
+ a.a_context = ctx;
+
+ /* do the rename of the main file. */
+ _err = (*fdvp->v_op[vnop_renamex_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(renamex, vnode_t, fdvp);
+
+ if (_err) {
+ return _err;
+ }
+
+ return post_rename(fdvp, fvp, tdvp, tvp);
+}
+
+
+int
+VNOP_COMPOUND_RENAME(
+ struct vnode *fdvp, struct vnode **fvpp, struct componentname *fcnp, struct vnode_attr *fvap,
+ struct vnode *tdvp, struct vnode **tvpp, struct componentname *tcnp, struct vnode_attr *tvap,
+ uint32_t flags, vfs_context_t ctx)
+{
+ int _err = 0;
+ int events;
+ struct vnop_compound_rename_args a;
+ int no_fvp, no_tvp;
+
+ no_fvp = (*fvpp) == NULLVP;
+ no_tvp = (*tvpp) == NULLVP;
+
+ a.a_desc = &vnop_compound_rename_desc;
+
+ a.a_fdvp = fdvp;
+ a.a_fvpp = fvpp;
+ a.a_fcnp = fcnp;
+ a.a_fvap = fvap;
+
+ a.a_tdvp = tdvp;
+ a.a_tvpp = tvpp;
+ a.a_tcnp = tcnp;
+ a.a_tvap = tvap;
+
+ a.a_flags = flags;
+ a.a_context = ctx;
+ a.a_rename_authorizer = vn_authorize_rename;
+ a.a_reserved = NULL;
+
+ /* do the rename of the main file. */
+ _err = (*fdvp->v_op[vnop_compound_rename_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(compound_rename, vnode_t, fdvp);
+
+ if (_err == 0) {
+ if (*tvpp && *tvpp != *fvpp) {
+ vnode_setneedinactive(*tvpp);
}
- a.a_desc = &vnop_rename_desc;
- a.a_fdvp = fdvp;
- a.a_fvp = fromnd.ni_vp;
- a.a_fcnp = &fromnd.ni_cnd;
- a.a_tdvp = tdvp;
- a.a_tvp = tond.ni_vp;
- a.a_tcnp = &tond.ni_cnd;
- a.a_context = context;
-
- if (fdvp_unsafe != NULLVP) {
- /*
- * Lock in vnode address order to avoid deadlocks
+ }
+
+ /* Wrote at least one directory. If transplanted a dir, also changed link counts */
+ if (_err == 0 && *fvpp != *tvpp) {
+ if (!*fvpp) {
+ panic("No fvpp after compound rename?");
+ }
+
+ events = NOTE_WRITE;
+ if (vnode_isdir(*fvpp)) {
+ /* Link count on dir changed only if we are moving a dir and...
+ * --Moved to new dir, not overwriting there
+ * --Kept in same dir and DID overwrite
*/
- if (tond.ni_vp == NULL || tond.ni_vp == fromnd.ni_vp) {
- lock_first = fromnd.ni_vp;
- lock_second = NULL;
- } else if (fromnd.ni_vp < tond.ni_vp) {
- lock_first = fromnd.ni_vp;
- lock_second = tond.ni_vp;
- } else {
- lock_first = tond.ni_vp;
- lock_second = fromnd.ni_vp;
- }
- if ( (error = lock_fsnode(lock_first, NULL)) == 0) {
- if (lock_second != NULL && (error = lock_fsnode(lock_second, NULL)) )
- unlock_fsnode(lock_first, NULL);
+ if (((fdvp != tdvp) && (!*tvpp)) || ((fdvp == tdvp) && (*tvpp))) {
+ events |= NOTE_LINK;
}
}
- if (error == 0) {
- error = (*fdvp->v_op[vnop_rename_desc.vdesc_offset])(&a);
- if (fdvp_unsafe != NULLVP) {
- if (lock_second != NULL)
- unlock_fsnode(lock_second, NULL);
- unlock_fsnode(lock_first, NULL);
- }
- if (error == 0) {
- vnode_setneedinactive(fromnd.ni_vp);
-
- if (tond.ni_vp && tond.ni_vp != fromnd.ni_vp)
- vnode_setneedinactive(tond.ni_vp);
- }
+ lock_vnode_and_post(fdvp, events);
+ if (fdvp != tdvp) {
+ lock_vnode_and_post(tdvp, events);
}
- vnode_put(fromnd.ni_vp);
- if (tond.ni_vp) {
- vnode_put(tond.ni_vp);
+
+ /* If you're replacing the target, post a deletion for it */
+ if (*tvpp) {
+ lock_vnode_and_post(*tvpp, NOTE_DELETE);
}
- nameidone(&tond);
- nameidone(&fromnd);
+
+ lock_vnode_and_post(*fvpp, NOTE_RENAME);
}
-out:
- if (xfromname && xfromname != &smallname1[0]) {
- FREE(xfromname, M_TEMP);
+
+ if (no_fvp) {
+ lookup_compound_vnop_post_hook(_err, fdvp, *fvpp, fcnp->cn_ndp, 0);
}
- if (xtoname && xtoname != &smallname2[0]) {
- FREE(xtoname, M_TEMP);
+ if (no_tvp && *tvpp != NULLVP) {
+ lookup_compound_vnop_post_hook(_err, tdvp, *tvpp, tcnp->cn_ndp, 0);
}
-out1:
- if (fdvp_unsafe != NULLVP) {
- if (tdvp_unsafe != NULLVP)
- unlock_fsnode(tdvp_unsafe, NULL);
- unlock_fsnode(fdvp_unsafe, &funnel_state);
+
+ if (_err && _err != EKEEPLOOKING) {
+ if (*fvpp) {
+ vnode_put(*fvpp);
+ *fvpp = NULLVP;
+ }
+ if (*tvpp) {
+ vnode_put(*tvpp);
+ *tvpp = NULLVP;
+ }
}
- return (_err);
+
+ return _err;
}
- #if 0
+int
+vn_mkdir(struct vnode *dvp, struct vnode **vpp, struct nameidata *ndp,
+ struct vnode_attr *vap, vfs_context_t ctx)
+{
+ if (ndp->ni_cnd.cn_nameiop != CREATE) {
+ panic("Non-CREATE nameiop in vn_mkdir()?");
+ }
+
+ if (vnode_compound_mkdir_available(dvp)) {
+ return VNOP_COMPOUND_MKDIR(dvp, vpp, ndp, vap, ctx);
+ } else {
+ return VNOP_MKDIR(dvp, vpp, &ndp->ni_cnd, vap, ctx);
+ }
+}
+
+#if 0
/*
- *#
- *#% mkdir dvp L U U
- *#% mkdir vpp - L -
- *#
- */
+*#
+*#% mkdir dvp L U U
+*#% mkdir vpp - L -
+*#
+*/
struct vnop_mkdir_args {
- struct vnodeop_desc *a_desc;
- vnode_t a_dvp;
- vnode_t *a_vpp;
- struct componentname *a_cnp;
- struct vnode_attr *a_vap;
- vfs_context_t a_context;
+ struct vnodeop_desc *a_desc;
+ vnode_t a_dvp;
+ vnode_t *a_vpp;
+ struct componentname *a_cnp;
+ struct vnode_attr *a_vap;
+ vfs_context_t a_context;
};
#endif /* 0*/
errno_t
VNOP_MKDIR(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp,
- struct vnode_attr *vap, vfs_context_t context)
-{
- int _err;
- struct vnop_mkdir_args a;
- int thread_safe;
- int funnel_state = 0;
-
- a.a_desc = &vnop_mkdir_desc;
- a.a_dvp = dvp;
- a.a_vpp = vpp;
- a.a_cnp = cnp;
- a.a_vap = vap;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(dvp);
-
- if (!thread_safe) {
- if ( (_err = lock_fsnode(dvp, &funnel_state)) ) {
- return (_err);
- }
- }
- _err = (*dvp->v_op[vnop_mkdir_desc.vdesc_offset])(&a);
+ struct vnode_attr *vap, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_mkdir_args a;
+
+ a.a_desc = &vnop_mkdir_desc;
+ a.a_dvp = dvp;
+ a.a_vpp = vpp;
+ a.a_cnp = cnp;
+ a.a_vap = vap;
+ a.a_context = ctx;
+
+ _err = (*dvp->v_op[vnop_mkdir_desc.vdesc_offset])(&a);
+ if (_err == 0 && *vpp) {
+ DTRACE_FSINFO(mkdir, vnode_t, *vpp);
+ }
+#if CONFIG_APPLEDOUBLE
if (_err == 0 && !NATIVE_XATTR(dvp)) {
- /*
+ /*
* Remove stale Apple Double file (if any).
*/
- xattrfile_remove(dvp, cnp->cn_nameptr, context, thread_safe, 0);
+ xattrfile_remove(dvp, cnp->cn_nameptr, ctx, 0);
}
- if (!thread_safe) {
- unlock_fsnode(dvp, &funnel_state);
- }
- return (_err);
+#endif /* CONFIG_APPLEDOUBLE */
+
+ post_event_if_success(dvp, _err, NOTE_LINK | NOTE_WRITE);
+
+ return _err;
}
+int
+VNOP_COMPOUND_MKDIR(struct vnode *dvp, struct vnode **vpp, struct nameidata *ndp,
+ struct vnode_attr *vap, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_compound_mkdir_args a;
+
+ a.a_desc = &vnop_compound_mkdir_desc;
+ a.a_dvp = dvp;
+ a.a_vpp = vpp;
+ a.a_cnp = &ndp->ni_cnd;
+ a.a_vap = vap;
+ a.a_flags = 0;
+ a.a_context = ctx;
+#if 0
+ a.a_mkdir_authorizer = vn_authorize_mkdir;
+#endif /* 0 */
+ a.a_reserved = NULL;
+
+ _err = (*dvp->v_op[vnop_compound_mkdir_desc.vdesc_offset])(&a);
+ if (_err == 0 && *vpp) {
+ DTRACE_FSINFO(compound_mkdir, vnode_t, *vpp);
+ }
+#if CONFIG_APPLEDOUBLE
+ if (_err == 0 && !NATIVE_XATTR(dvp)) {
+ /*
+ * Remove stale Apple Double file (if any).
+ */
+ xattrfile_remove(dvp, ndp->ni_cnd.cn_nameptr, ctx, 0);
+ }
+#endif /* CONFIG_APPLEDOUBLE */
+
+ post_event_if_success(dvp, _err, NOTE_LINK | NOTE_WRITE);
+
+ lookup_compound_vnop_post_hook(_err, dvp, *vpp, ndp, (_err == 0));
+ if (*vpp && _err && _err != EKEEPLOOKING) {
+ vnode_put(*vpp);
+ *vpp = NULLVP;
+ }
+
+ return _err;
+}
+
+int
+vn_rmdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx)
+{
+ if (vnode_compound_rmdir_available(dvp)) {
+ return VNOP_COMPOUND_RMDIR(dvp, vpp, ndp, vap, ctx);
+ } else {
+ if (*vpp == NULLVP) {
+ panic("NULL vp, but not a compound VNOP?");
+ }
+ if (vap != NULL) {
+ panic("Non-NULL vap, but not a compound VNOP?");
+ }
+ return VNOP_RMDIR(dvp, *vpp, &ndp->ni_cnd, ctx);
+ }
+}
#if 0
/*
- *#
- *#% rmdir dvp L U U
- *#% rmdir vp L U U
- *#
- */
+*#
+*#% rmdir dvp L U U
+*#% rmdir vp L U U
+*#
+*/
struct vnop_rmdir_args {
struct vnodeop_desc *a_desc;
vnode_t a_dvp;
#endif /* 0*/
errno_t
-VNOP_RMDIR(struct vnode *dvp, struct vnode *vp, struct componentname *cnp, vfs_context_t context)
+VNOP_RMDIR(struct vnode *dvp, struct vnode *vp, struct componentname *cnp, vfs_context_t ctx)
{
int _err;
struct vnop_rmdir_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_rmdir_desc;
a.a_dvp = dvp;
a.a_vp = vp;
a.a_cnp = cnp;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(dvp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_rmdir_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(rmdir, vnode_t, vp);
if (_err == 0) {
- vnode_setneedinactive(vp);
-
- if ( !(NATIVE_XATTR(dvp)) ) {
- /*
- * Remove any associated extended attibute file (._ AppleDouble file).
+ vnode_setneedinactive(vp);
+#if CONFIG_APPLEDOUBLE
+ if (!(NATIVE_XATTR(dvp))) {
+ /*
+ * Remove any associated extended attribute file (._ AppleDouble file).
*/
- xattrfile_remove(dvp, cnp->cn_nameptr, context, thread_safe, 1);
+ xattrfile_remove(dvp, cnp->cn_nameptr, ctx, 1);
}
+#endif
}
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
+
+ /* If you delete a dir, it loses its "." reference --> NOTE_LINK */
+ post_event_if_success(vp, _err, NOTE_DELETE | NOTE_LINK);
+ post_event_if_success(dvp, _err, NOTE_LINK | NOTE_WRITE);
+
+ return _err;
+}
+
+int
+VNOP_COMPOUND_RMDIR(struct vnode *dvp, struct vnode **vpp, struct nameidata *ndp,
+ struct vnode_attr *vap, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_compound_rmdir_args a;
+ int no_vp;
+
+ a.a_desc = &vnop_mkdir_desc;
+ a.a_dvp = dvp;
+ a.a_vpp = vpp;
+ a.a_cnp = &ndp->ni_cnd;
+ a.a_vap = vap;
+ a.a_flags = 0;
+ a.a_context = ctx;
+ a.a_rmdir_authorizer = vn_authorize_rmdir;
+ a.a_reserved = NULL;
+
+ no_vp = (*vpp == NULLVP);
+
+ _err = (*dvp->v_op[vnop_compound_rmdir_desc.vdesc_offset])(&a);
+ if (_err == 0 && *vpp) {
+ DTRACE_FSINFO(compound_rmdir, vnode_t, *vpp);
+ }
+#if CONFIG_APPLEDOUBLE
+ if (_err == 0 && !NATIVE_XATTR(dvp)) {
+ /*
+ * Remove stale Apple Double file (if any).
+ */
+ xattrfile_remove(dvp, ndp->ni_cnd.cn_nameptr, ctx, 0);
+ }
+#endif
+
+ if (*vpp) {
+ post_event_if_success(*vpp, _err, NOTE_DELETE | NOTE_LINK);
+ }
+ post_event_if_success(dvp, _err, NOTE_LINK | NOTE_WRITE);
+
+ if (no_vp) {
+ lookup_compound_vnop_post_hook(_err, dvp, *vpp, ndp, 0);
+
+#if 0 /* Removing orphaned ._ files requires a vp.... */
+ if (*vpp && _err && _err != EKEEPLOOKING) {
+ vnode_put(*vpp);
+ *vpp = NULLVP;
+ }
+#endif /* 0 */
}
- return (_err);
+
+ return _err;
}
+#if CONFIG_APPLEDOUBLE
/*
* Remove a ._ AppleDouble file
*/
#define AD_STALE_SECS (180)
static void
-xattrfile_remove(vnode_t dvp, const char * basename, vfs_context_t context, int thread_safe, int force) {
+xattrfile_remove(vnode_t dvp, const char * basename, vfs_context_t ctx, int force)
+{
vnode_t xvp;
struct nameidata nd;
char smallname[64];
char *filename = NULL;
- size_t len;
+ size_t alloc_len;
+ size_t copy_len;
if ((basename == NULL) || (basename[0] == '\0') ||
(basename[0] == '.' && basename[1] == '_')) {
return;
}
filename = &smallname[0];
- len = snprintf(filename, sizeof(smallname), "._%s", basename);
- if (len >= sizeof(smallname)) {
- len++; /* snprintf result doesn't include '\0' */
- MALLOC(filename, char *, len, M_TEMP, M_WAITOK);
- len = snprintf(filename, len, "._%s", basename);
- }
- NDINIT(&nd, DELETE, LOCKLEAF | NOFOLLOW | USEDVP, UIO_SYSSPACE,
- CAST_USER_ADDR_T(filename), context);
+ alloc_len = snprintf(filename, sizeof(smallname), "._%s", basename);
+ if (alloc_len >= sizeof(smallname)) {
+ alloc_len++; /* snprintf result doesn't include '\0' */
+ filename = kheap_alloc(KHEAP_TEMP, alloc_len, Z_WAITOK);
+ copy_len = snprintf(filename, alloc_len, "._%s", basename);
+ }
+ NDINIT(&nd, DELETE, OP_UNLINK, WANTPARENT | LOCKLEAF | NOFOLLOW | USEDVP, UIO_SYSSPACE,
+ CAST_USER_ADDR_T(filename), ctx);
nd.ni_dvp = dvp;
- if (namei(&nd) != 0)
+ if (namei(&nd) != 0) {
goto out2;
+ }
xvp = nd.ni_vp;
nameidone(&nd);
- if (xvp->v_type != VREG)
+ if (xvp->v_type != VREG) {
goto out1;
+ }
/*
* When creating a new object and a "._" file already
VATTR_INIT(&va);
VATTR_WANTED(&va, va_data_size);
VATTR_WANTED(&va, va_modify_time);
- if (VNOP_GETATTR(xvp, &va, context) == 0 &&
- VATTR_IS_SUPPORTED(&va, va_data_size) &&
- VATTR_IS_SUPPORTED(&va, va_modify_time) &&
+ if (VNOP_GETATTR(xvp, &va, ctx) == 0 &&
+ VATTR_IS_SUPPORTED(&va, va_data_size) &&
+ VATTR_IS_SUPPORTED(&va, va_modify_time) &&
va.va_data_size != 0) {
struct timeval tv;
}
}
if (force) {
- struct vnop_remove_args a;
int error;
-
- a.a_desc = &vnop_remove_desc;
- a.a_dvp = nd.ni_dvp;
- a.a_vp = xvp;
- a.a_cnp = &nd.ni_cnd;
- a.a_context = context;
-
- if (!thread_safe) {
- if ( (lock_fsnode(xvp, NULL)) )
- goto out1;
- }
- error = (*dvp->v_op[vnop_remove_desc.vdesc_offset])(&a);
-
- if (!thread_safe)
- unlock_fsnode(xvp, NULL);
- if (error == 0)
+ error = VNOP_REMOVE(dvp, xvp, &nd.ni_cnd, 0, ctx);
+ if (error == 0) {
vnode_setneedinactive(xvp);
+ }
+
+ post_event_if_success(xvp, error, NOTE_DELETE);
+ post_event_if_success(dvp, error, NOTE_WRITE);
}
-out1:
- /* Note: nd.ni_dvp's iocount is dropped by caller of VNOP_XXXX */
+
+out1:
+ vnode_put(dvp);
vnode_put(xvp);
out2:
if (filename && filename != &smallname[0]) {
- FREE(filename, M_TEMP);
+ kheap_free(KHEAP_TEMP, filename, alloc_len);
}
}
*/
static void
xattrfile_setattr(vnode_t dvp, const char * basename, struct vnode_attr * vap,
- vfs_context_t context, int thread_safe) {
+ vfs_context_t ctx)
+{
vnode_t xvp;
struct nameidata nd;
char smallname[64];
char *filename = NULL;
- size_t len;
+ size_t alloc_len;
+ size_t copy_len;
if ((dvp == NULLVP) ||
(basename == NULL) || (basename[0] == '\0') ||
return;
}
filename = &smallname[0];
- len = snprintf(filename, sizeof(smallname), "._%s", basename);
- if (len >= sizeof(smallname)) {
- len++; /* snprintf result doesn't include '\0' */
- MALLOC(filename, char *, len, M_TEMP, M_WAITOK);
- len = snprintf(filename, len, "._%s", basename);
- }
- NDINIT(&nd, LOOKUP, NOFOLLOW | USEDVP, UIO_SYSSPACE,
- CAST_USER_ADDR_T(filename), context);
+ alloc_len = snprintf(filename, sizeof(smallname), "._%s", basename);
+ if (alloc_len >= sizeof(smallname)) {
+ alloc_len++; /* snprintf result doesn't include '\0' */
+ filename = kheap_alloc(KHEAP_TEMP, alloc_len, Z_WAITOK);
+ copy_len = snprintf(filename, alloc_len, "._%s", basename);
+ }
+ NDINIT(&nd, LOOKUP, OP_SETATTR, NOFOLLOW | USEDVP, UIO_SYSSPACE,
+ CAST_USER_ADDR_T(filename), ctx);
nd.ni_dvp = dvp;
- if (namei(&nd) != 0)
+ if (namei(&nd) != 0) {
goto out2;
+ }
xvp = nd.ni_vp;
nameidone(&nd);
a.a_desc = &vnop_setattr_desc;
a.a_vp = xvp;
a.a_vap = vap;
- a.a_context = context;
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (lock_fsnode(xvp, NULL)) )
- goto out1;
- }
(void) (*xvp->v_op[vnop_setattr_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(xvp, NULL);
- }
}
-out1:
+
vnode_put(xvp);
out2:
if (filename && filename != &smallname[0]) {
- FREE(filename, M_TEMP);
+ kheap_free(KHEAP_TEMP, filename, alloc_len);
}
}
+#endif /* CONFIG_APPLEDOUBLE */
#if 0
/*
- *#
- *#% symlink dvp L U U
- *#% symlink vpp - U -
- *#
- */
+*#
+*#% symlink dvp L U U
+*#% symlink vpp - U -
+*#
+*/
struct vnop_symlink_args {
- struct vnodeop_desc *a_desc;
- vnode_t a_dvp;
- vnode_t *a_vpp;
- struct componentname *a_cnp;
- struct vnode_attr *a_vap;
- char *a_target;
- vfs_context_t a_context;
+ struct vnodeop_desc *a_desc;
+ vnode_t a_dvp;
+ vnode_t *a_vpp;
+ struct componentname *a_cnp;
+ struct vnode_attr *a_vap;
+ char *a_target;
+ vfs_context_t a_context;
};
#endif /* 0*/
errno_t
VNOP_SYMLINK(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp,
- struct vnode_attr *vap, char *target, vfs_context_t context)
-{
- int _err;
- struct vnop_symlink_args a;
- int thread_safe;
- int funnel_state = 0;
-
- a.a_desc = &vnop_symlink_desc;
- a.a_dvp = dvp;
- a.a_vpp = vpp;
- a.a_cnp = cnp;
- a.a_vap = vap;
- a.a_target = target;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(dvp);
-
- if (!thread_safe) {
- if ( (_err = lock_fsnode(dvp, &funnel_state)) ) {
- return (_err);
- }
- }
- _err = (*dvp->v_op[vnop_symlink_desc.vdesc_offset])(&a);
+ struct vnode_attr *vap, char *target, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_symlink_args a;
+
+ a.a_desc = &vnop_symlink_desc;
+ a.a_dvp = dvp;
+ a.a_vpp = vpp;
+ a.a_cnp = cnp;
+ a.a_vap = vap;
+ a.a_target = target;
+ a.a_context = ctx;
+
+ _err = (*dvp->v_op[vnop_symlink_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(symlink, vnode_t, dvp);
+#if CONFIG_APPLEDOUBLE
if (_err == 0 && !NATIVE_XATTR(dvp)) {
- /*
- * Remove stale Apple Double file (if any).
+ /*
+ * Remove stale Apple Double file (if any). Posts its own knotes
*/
- xattrfile_remove(dvp, cnp->cn_nameptr, context, thread_safe, 0);
+ xattrfile_remove(dvp, cnp->cn_nameptr, ctx, 0);
}
- if (!thread_safe) {
- unlock_fsnode(dvp, &funnel_state);
- }
- return (_err);
+#endif /* CONFIG_APPLEDOUBLE */
+
+ post_event_if_success(dvp, _err, NOTE_WRITE);
+
+ return _err;
}
#if 0
/*
- *#
- *#% readdir vp L L L
- *#
- */
+*#
+*#% readdir vp L L L
+*#
+*/
struct vnop_readdir_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
};
#endif /* 0*/
-errno_t
+errno_t
VNOP_READDIR(struct vnode *vp, struct uio *uio, int flags, int *eofflag,
- int *numdirent, vfs_context_t context)
+ int *numdirent, vfs_context_t ctx)
{
int _err;
struct vnop_readdir_args a;
- int thread_safe;
- int funnel_state = 0;
+#if CONFIG_DTRACE
+ user_ssize_t resid = uio_resid(uio);
+#endif
a.a_desc = &vnop_readdir_desc;
a.a_vp = vp;
a.a_flags = flags;
a.a_eofflag = eofflag;
a.a_numdirent = numdirent;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_readdir_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO_IO(readdir,
+ vnode_t, vp, user_ssize_t, (resid - uio_resid(uio)));
+
+ return _err;
}
#if 0
/*
- *#
- *#% readdirattr vp L L L
- *#
- */
+*#
+*#% readdirattr vp L L L
+*#
+*/
struct vnop_readdirattr_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
struct attrlist *a_alist;
struct uio *a_uio;
- u_long a_maxcount;
- u_long a_options;
- u_long *a_newstate;
+ uint32_t a_maxcount;
+ uint32_t a_options;
+ uint32_t *a_newstate;
+ int *a_eofflag;
+ uint32_t *a_actualcount;
+ vfs_context_t a_context;
+};
+
+#endif /* 0*/
+errno_t
+VNOP_READDIRATTR(struct vnode *vp, struct attrlist *alist, struct uio *uio, uint32_t maxcount,
+ uint32_t options, uint32_t *newstate, int *eofflag, uint32_t *actualcount, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_readdirattr_args a;
+#if CONFIG_DTRACE
+ user_ssize_t resid = uio_resid(uio);
+#endif
+
+ a.a_desc = &vnop_readdirattr_desc;
+ a.a_vp = vp;
+ a.a_alist = alist;
+ a.a_uio = uio;
+ a.a_maxcount = maxcount;
+ a.a_options = options;
+ a.a_newstate = newstate;
+ a.a_eofflag = eofflag;
+ a.a_actualcount = actualcount;
+ a.a_context = ctx;
+
+ _err = (*vp->v_op[vnop_readdirattr_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO_IO(readdirattr,
+ vnode_t, vp, user_ssize_t, (resid - uio_resid(uio)));
+
+ return _err;
+}
+
+#if 0
+struct vnop_getttrlistbulk_args {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_vp;
+ struct attrlist *a_alist;
+ struct vnode_attr *a_vap;
+ struct uio *a_uio;
+ void *a_private
+ uint64_t a_options;
int *a_eofflag;
- u_long *a_actualcount;
+ uint32_t *a_actualcount;
vfs_context_t a_context;
};
-
#endif /* 0*/
-errno_t
-VNOP_READDIRATTR(struct vnode *vp, struct attrlist *alist, struct uio *uio, u_long maxcount,
- u_long options, u_long *newstate, int *eofflag, u_long *actualcount, vfs_context_t context)
+errno_t
+VNOP_GETATTRLISTBULK(struct vnode *vp, struct attrlist *alist,
+ struct vnode_attr *vap, struct uio *uio, void *private, uint64_t options,
+ int32_t *eofflag, int32_t *actualcount, vfs_context_t ctx)
{
int _err;
- struct vnop_readdirattr_args a;
- int thread_safe;
- int funnel_state = 0;
+ struct vnop_getattrlistbulk_args a;
+#if CONFIG_DTRACE
+ user_ssize_t resid = uio_resid(uio);
+#endif
- a.a_desc = &vnop_readdirattr_desc;
+ a.a_desc = &vnop_getattrlistbulk_desc;
a.a_vp = vp;
a.a_alist = alist;
+ a.a_vap = vap;
a.a_uio = uio;
- a.a_maxcount = maxcount;
+ a.a_private = private;
a.a_options = options;
- a.a_newstate = newstate;
a.a_eofflag = eofflag;
a.a_actualcount = actualcount;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
- _err = (*vp->v_op[vnop_readdirattr_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ _err = (*vp->v_op[vnop_getattrlistbulk_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO_IO(getattrlistbulk,
+ vnode_t, vp, user_ssize_t, (resid - uio_resid(uio)));
+
+ return _err;
}
#if 0
/*
- *#
- *#% readlink vp L L L
- *#
- */
+*#
+*#% readlink vp L L L
+*#
+*/
struct vnop_readlink_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
};
#endif /* 0 */
-errno_t
-VNOP_READLINK(struct vnode *vp, struct uio *uio, vfs_context_t context)
+/*
+ * Returns: 0 Success
+ * lock_fsnode:ENOENT No such file or directory [only for VFS
+ * that is not thread safe & vnode is
+ * currently being/has been terminated]
+ * <vfs_readlink>:EINVAL
+ * <vfs_readlink>:???
+ *
+ * Note: The return codes from the underlying VFS's readlink routine
+ * can't be fully enumerated here, since third party VFS authors
+ * may not limit their error returns to the ones documented here,
+ * even though this may result in some programs functioning
+ * incorrectly.
+ *
+ * The return codes documented above are those which may currently
+ * be returned by HFS from hfs_vnop_readlink, not including
+ * additional error code which may be propagated from underlying
+ * routines.
+ */
+errno_t
+VNOP_READLINK(struct vnode *vp, struct uio *uio, vfs_context_t ctx)
{
int _err;
struct vnop_readlink_args a;
- int thread_safe;
- int funnel_state = 0;
-
+#if CONFIG_DTRACE
+ user_ssize_t resid = uio_resid(uio);
+#endif
a.a_desc = &vnop_readlink_desc;
a.a_vp = vp;
a.a_uio = uio;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_readlink_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO_IO(readlink,
+ vnode_t, vp, user_ssize_t, (resid - uio_resid(uio)));
+
+ return _err;
}
#if 0
/*
- *#
- *#% inactive vp L U U
- *#
- */
+*#
+*#% inactive vp L U U
+*#
+*/
struct vnop_inactive_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_INACTIVE(struct vnode *vp, vfs_context_t context)
+errno_t
+VNOP_INACTIVE(struct vnode *vp, vfs_context_t ctx)
{
int _err;
struct vnop_inactive_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_inactive_desc;
a.a_vp = vp;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_inactive_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
+ DTRACE_FSINFO(inactive, vnode_t, vp);
+
+#if NAMEDSTREAMS
+ /* For file systems that do not support namedstream natively, mark
+ * the shadow stream file vnode to be recycled as soon as the last
+ * reference goes away. To avoid re-entering reclaim code, do not
+ * call recycle on terminating namedstream vnodes.
+ */
+ if (vnode_isnamedstream(vp) &&
+ (vp->v_parent != NULLVP) &&
+ vnode_isshadow(vp) &&
+ ((vp->v_lflag & VL_TERMINATE) == 0)) {
+ vnode_recycle(vp);
}
- return (_err);
+#endif
+
+ return _err;
}
#if 0
/*
- *#
- *#% reclaim vp U U U
- *#
- */
+*#
+*#% reclaim vp U U U
+*#
+*/
struct vnop_reclaim_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
};
#endif /* 0*/
errno_t
-VNOP_RECLAIM(struct vnode *vp, vfs_context_t context)
+VNOP_RECLAIM(struct vnode *vp, vfs_context_t ctx)
{
int _err;
struct vnop_reclaim_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_reclaim_desc;
a.a_vp = vp;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
_err = (*vp->v_op[vnop_reclaim_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(reclaim, vnode_t, vp);
+
+ return _err;
}
-#if 0
/*
- *#
- *#% pathconf vp L L L
- *#
+ * Returns: 0 Success
+ * lock_fsnode:ENOENT No such file or directory [only for VFS
+ * that is not thread safe & vnode is
+ * currently being/has been terminated]
+ * <vnop_pathconf_desc>:??? [per FS implementation specific]
*/
+#if 0
+/*
+*#
+*#% pathconf vp L L L
+*#
+*/
struct vnop_pathconf_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
int a_name;
- register_t *a_retval;
+ int32_t *a_retval;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_PATHCONF(struct vnode *vp, int name, register_t *retval, vfs_context_t context)
+errno_t
+VNOP_PATHCONF(struct vnode *vp, int name, int32_t *retval, vfs_context_t ctx)
{
int _err;
struct vnop_pathconf_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_pathconf_desc;
a.a_vp = vp;
a.a_name = name;
a.a_retval = retval;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_pathconf_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(pathconf, vnode_t, vp);
+
+ return _err;
}
-#if 0
/*
- *#
- *#% advlock vp U U U
- *#
+ * Returns: 0 Success
+ * err_advlock:ENOTSUP
+ * lf_advlock:???
+ * <vnop_advlock_desc>:???
+ *
+ * Notes: VFS implementations of advisory locking using calls through
+ * <vnop_advlock_desc> because lock enforcement does not occur
+ * locally should try to limit themselves to the return codes
+ * documented above for lf_advlock and err_advlock.
*/
+#if 0
+/*
+*#
+*#% advlock vp U U U
+*#
+*/
struct vnop_advlock_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_ADVLOCK(struct vnode *vp, caddr_t id, int op, struct flock *fl, int flags, vfs_context_t context)
+errno_t
+VNOP_ADVLOCK(struct vnode *vp, caddr_t id, int op, struct flock *fl, int flags, vfs_context_t ctx, struct timespec *timeout)
{
int _err;
struct vnop_advlock_args a;
- int thread_safe;
- int funnel_state = 0;
- struct uthread * uth;
a.a_desc = &vnop_advlock_desc;
a.a_vp = vp;
a.a_op = op;
a.a_fl = fl;
a.a_flags = flags;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
+ a.a_timeout = timeout;
- uth = get_bsdthread_info(current_thread());
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
/* Disallow advisory locking on non-seekable vnodes */
if (vnode_isfifo(vp)) {
_err = err_advlock(&a);
if ((vp->v_flag & VLOCKLOCAL)) {
/* Advisory locking done at this layer */
_err = lf_advlock(&a);
+ } else if (flags & F_OFD_LOCK) {
+ /* Non-local locking doesn't work for OFD locks */
+ _err = err_advlock(&a);
} else {
/* Advisory locking done by underlying filesystem */
_err = (*vp->v_op[vnop_advlock_desc.vdesc_offset])(&a);
}
+ DTRACE_FSINFO(advlock, vnode_t, vp);
+ if (op == F_UNLCK &&
+ (flags & (F_FLOCK | F_OFD_LOCK)) != 0) {
+ post_event_if_success(vp, _err, NOTE_FUNLOCK);
+ }
}
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+
+ return _err;
}
#if 0
/*
- *#
- *#% allocate vp L L L
- *#
- */
+*#
+*#% allocate vp L L L
+*#
+*/
struct vnop_allocate_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
};
#endif /* 0*/
-errno_t
-VNOP_ALLOCATE(struct vnode *vp, off_t length, u_int32_t flags, off_t *bytesallocated, off_t offset, vfs_context_t context)
+errno_t
+VNOP_ALLOCATE(struct vnode *vp, off_t length, u_int32_t flags, off_t *bytesallocated, off_t offset, vfs_context_t ctx)
{
int _err;
struct vnop_allocate_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_allocate_desc;
a.a_vp = vp;
a.a_flags = flags;
a.a_bytesallocated = bytesallocated;
a.a_offset = offset;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_allocate_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
+ DTRACE_FSINFO(allocate, vnode_t, vp);
+#if CONFIG_FSE
+ if (_err == 0) {
+ add_fsevent(FSE_STAT_CHANGED, ctx, FSE_ARG_VNODE, vp, FSE_ARG_DONE);
}
- return (_err);
+#endif
+
+ return _err;
}
#if 0
/*
- *#
- *#% pagein vp = = =
- *#
- */
+*#
+*#% pagein vp = = =
+*#
+*/
struct vnop_pagein_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
upl_t a_pl;
- vm_offset_t a_pl_offset;
+ upl_offset_t a_pl_offset;
off_t a_f_offset;
size_t a_size;
int a_flags;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_PAGEIN(struct vnode *vp, upl_t pl, vm_offset_t pl_offset, off_t f_offset, size_t size, int flags, vfs_context_t context)
+errno_t
+VNOP_PAGEIN(struct vnode *vp, upl_t pl, upl_offset_t pl_offset, off_t f_offset, size_t size, int flags, vfs_context_t ctx)
{
int _err;
struct vnop_pagein_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_pagein_desc;
a.a_vp = vp;
a.a_f_offset = f_offset;
a.a_size = size;
a.a_flags = flags;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
_err = (*vp->v_op[vnop_pagein_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(pagein, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *#% pageout vp = = =
- *#
- */
+*#
+*#% pageout vp = = =
+*#
+*/
struct vnop_pageout_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
upl_t a_pl;
- vm_offset_t a_pl_offset;
+ upl_offset_t a_pl_offset;
off_t a_f_offset;
size_t a_size;
int a_flags;
};
#endif /* 0*/
-errno_t
-VNOP_PAGEOUT(struct vnode *vp, upl_t pl, vm_offset_t pl_offset, off_t f_offset, size_t size, int flags, vfs_context_t context)
+errno_t
+VNOP_PAGEOUT(struct vnode *vp, upl_t pl, upl_offset_t pl_offset, off_t f_offset, size_t size, int flags, vfs_context_t ctx)
{
int _err;
struct vnop_pageout_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_pageout_desc;
a.a_vp = vp;
a.a_f_offset = f_offset;
a.a_size = size;
a.a_flags = flags;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
_err = (*vp->v_op[vnop_pageout_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
+ DTRACE_FSINFO(pageout, vnode_t, vp);
+
+ post_event_if_success(vp, _err, NOTE_WRITE);
+
+ return _err;
+}
+
+int
+vn_remove(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, int32_t flags, struct vnode_attr *vap, vfs_context_t ctx)
+{
+ if (vnode_compound_remove_available(dvp)) {
+ return VNOP_COMPOUND_REMOVE(dvp, vpp, ndp, flags, vap, ctx);
+ } else {
+ return VNOP_REMOVE(dvp, *vpp, &ndp->ni_cnd, flags, ctx);
}
- return (_err);
}
+#if CONFIG_SEARCHFS
#if 0
/*
- *#
- *#% searchfs vp L L L
- *#
- */
+*#
+*#% searchfs vp L L L
+*#
+*/
struct vnop_searchfs_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
void *a_searchparams1;
void *a_searchparams2;
struct attrlist *a_searchattrs;
- u_long a_maxmatches;
+ uint32_t a_maxmatches;
struct timeval *a_timelimit;
struct attrlist *a_returnattrs;
- u_long *a_nummatches;
- u_long a_scriptcode;
- u_long a_options;
+ uint32_t *a_nummatches;
+ uint32_t a_scriptcode;
+ uint32_t a_options;
struct uio *a_uio;
struct searchstate *a_searchstate;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_SEARCHFS(struct vnode *vp, void *searchparams1, void *searchparams2, struct attrlist *searchattrs, u_long maxmatches, struct timeval *timelimit, struct attrlist *returnattrs, u_long *nummatches, u_long scriptcode, u_long options, struct uio *uio, struct searchstate *searchstate, vfs_context_t context)
+errno_t
+VNOP_SEARCHFS(struct vnode *vp, void *searchparams1, void *searchparams2, struct attrlist *searchattrs, uint32_t maxmatches, struct timeval *timelimit, struct attrlist *returnattrs, uint32_t *nummatches, uint32_t scriptcode, uint32_t options, struct uio *uio, struct searchstate *searchstate, vfs_context_t ctx)
{
int _err;
struct vnop_searchfs_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_searchfs_desc;
a.a_vp = vp;
a.a_options = options;
a.a_uio = uio;
a.a_searchstate = searchstate;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_searchfs_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(searchfs, vnode_t, vp);
+
+ return _err;
}
+#endif /* CONFIG_SEARCHFS */
#if 0
/*
- *#
- *#% copyfile fvp U U U
- *#% copyfile tdvp L U U
- *#% copyfile tvp X U U
- *#
- */
+*#
+*#% copyfile fvp U U U
+*#% copyfile tdvp L U U
+*#% copyfile tvp X U U
+*#
+*/
struct vnop_copyfile_args {
struct vnodeop_desc *a_desc;
vnode_t a_fvp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
+errno_t
VNOP_COPYFILE(struct vnode *fvp, struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp,
- int mode, int flags, vfs_context_t context)
+ int mode, int flags, vfs_context_t ctx)
{
int _err;
struct vnop_copyfile_args a;
a.a_tcnp = tcnp;
a.a_mode = mode;
a.a_flags = flags;
- a.a_context = context;
+ a.a_context = ctx;
_err = (*fvp->v_op[vnop_copyfile_desc.vdesc_offset])(&a);
- return (_err);
+ DTRACE_FSINFO(copyfile, vnode_t, fvp);
+ return _err;
}
+#if 0
+struct vnop_clonefile_args {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_fvp;
+ vnode_t a_dvp;
+ vnode_t *a_vpp;
+ struct componentname *a_cnp;
+ struct vnode_attr *a_vap;
+ uint32_t a_flags;
+ vfs_context_t a_context;
+ int (*a_dir_clone_authorizer)( /* Authorization callback */
+ struct vnode_attr *vap, /* attribute to be authorized */
+ kauth_action_t action, /* action for which attribute is to be authorized */
+ struct vnode_attr *dvap, /* target directory attributes */
+ vnode_t sdvp, /* source directory vnode pointer (optional) */
+ mount_t mp, /* mount point of filesystem */
+ dir_clone_authorizer_op_t vattr_op, /* specific operation requested : setup, authorization or cleanup */
+ uint32_t flags; /* value passed in a_flags to the VNOP */
+ vfs_context_t ctx, /* As passed to VNOP */
+ void *reserved); /* Always NULL */
+ void *a_reserved; /* Currently unused */
+};
+#endif /* 0 */
+
+errno_t
+VNOP_CLONEFILE(vnode_t fvp, vnode_t dvp, vnode_t *vpp,
+ struct componentname *cnp, struct vnode_attr *vap, uint32_t flags,
+ vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_clonefile_args a;
+ a.a_desc = &vnop_clonefile_desc;
+ a.a_fvp = fvp;
+ a.a_dvp = dvp;
+ a.a_vpp = vpp;
+ a.a_cnp = cnp;
+ a.a_vap = vap;
+ a.a_flags = flags;
+ a.a_context = ctx;
+
+ if (vnode_vtype(fvp) == VDIR) {
+ a.a_dir_clone_authorizer = vnode_attr_authorize_dir_clone;
+ } else {
+ a.a_dir_clone_authorizer = NULL;
+ }
+
+ _err = (*dvp->v_op[vnop_clonefile_desc.vdesc_offset])(&a);
+
+ if (_err == 0 && *vpp) {
+ DTRACE_FSINFO(clonefile, vnode_t, *vpp);
+ if (kdebug_enable) {
+ kdebug_lookup(*vpp, cnp);
+ }
+ }
+
+ post_event_if_success(dvp, _err, NOTE_WRITE);
+
+ return _err;
+}
errno_t
-VNOP_GETXATTR(vnode_t vp, const char *name, uio_t uio, size_t *size, int options, vfs_context_t context)
+VNOP_GETXATTR(vnode_t vp, const char *name, uio_t uio, size_t *size, int options, vfs_context_t ctx)
{
struct vnop_getxattr_args a;
int error;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_getxattr_desc;
a.a_vp = vp;
a.a_uio = uio;
a.a_size = size;
a.a_options = options;
- a.a_context = context;
+ a.a_context = ctx;
- thread_safe = THREAD_SAFE_FS(vp);
- if (!thread_safe) {
- if ( (error = lock_fsnode(vp, &funnel_state)) ) {
- return (error);
- }
- }
error = (*vp->v_op[vnop_getxattr_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (error);
+ DTRACE_FSINFO(getxattr, vnode_t, vp);
+
+ return error;
}
errno_t
-VNOP_SETXATTR(vnode_t vp, const char *name, uio_t uio, int options, vfs_context_t context)
+VNOP_SETXATTR(vnode_t vp, const char *name, uio_t uio, int options, vfs_context_t ctx)
{
struct vnop_setxattr_args a;
int error;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_setxattr_desc;
a.a_vp = vp;
a.a_name = name;
a.a_uio = uio;
a.a_options = options;
- a.a_context = context;
+ a.a_context = ctx;
- thread_safe = THREAD_SAFE_FS(vp);
- if (!thread_safe) {
- if ( (error = lock_fsnode(vp, &funnel_state)) ) {
- return (error);
- }
- }
error = (*vp->v_op[vnop_setxattr_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
+ DTRACE_FSINFO(setxattr, vnode_t, vp);
+
+ if (error == 0) {
+ vnode_uncache_authorized_action(vp, KAUTH_INVALIDATE_CACHED_RIGHTS);
}
- return (error);
+
+ post_event_if_success(vp, error, NOTE_ATTRIB);
+
+ return error;
}
errno_t
-VNOP_REMOVEXATTR(vnode_t vp, const char *name, int options, vfs_context_t context)
+VNOP_REMOVEXATTR(vnode_t vp, const char *name, int options, vfs_context_t ctx)
{
struct vnop_removexattr_args a;
int error;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_removexattr_desc;
a.a_vp = vp;
a.a_name = name;
a.a_options = options;
- a.a_context = context;
+ a.a_context = ctx;
- thread_safe = THREAD_SAFE_FS(vp);
- if (!thread_safe) {
- if ( (error = lock_fsnode(vp, &funnel_state)) ) {
- return (error);
- }
- }
error = (*vp->v_op[vnop_removexattr_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (error);
+ DTRACE_FSINFO(removexattr, vnode_t, vp);
+
+ post_event_if_success(vp, error, NOTE_ATTRIB);
+
+ return error;
}
errno_t
-VNOP_LISTXATTR(vnode_t vp, uio_t uio, size_t *size, int options, vfs_context_t context)
+VNOP_LISTXATTR(vnode_t vp, uio_t uio, size_t *size, int options, vfs_context_t ctx)
{
struct vnop_listxattr_args a;
int error;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_listxattr_desc;
a.a_vp = vp;
a.a_uio = uio;
a.a_size = size;
a.a_options = options;
- a.a_context = context;
+ a.a_context = ctx;
- thread_safe = THREAD_SAFE_FS(vp);
- if (!thread_safe) {
- if ( (error = lock_fsnode(vp, &funnel_state)) ) {
- return (error);
- }
- }
error = (*vp->v_op[vnop_listxattr_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return (error);
+ DTRACE_FSINFO(listxattr, vnode_t, vp);
+
+ return error;
}
#if 0
/*
- *#
- *#% blktooff vp = = =
- *#
- */
+*#
+*#% blktooff vp = = =
+*#
+*/
struct vnop_blktooff_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
off_t *a_offset;
};
#endif /* 0*/
-errno_t
+errno_t
VNOP_BLKTOOFF(struct vnode *vp, daddr64_t lblkno, off_t *offset)
{
int _err;
struct vnop_blktooff_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_blktooff_desc;
a.a_vp = vp;
a.a_lblkno = lblkno;
a.a_offset = offset;
- thread_safe = THREAD_SAFE_FS(vp);
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
_err = (*vp->v_op[vnop_blktooff_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
- }
- return (_err);
+ DTRACE_FSINFO(blktooff, vnode_t, vp);
+
+ return _err;
}
#if 0
/*
- *#
- *#% offtoblk vp = = =
- *#
- */
+*#
+*#% offtoblk vp = = =
+*#
+*/
struct vnop_offtoblk_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
daddr64_t *a_lblkno;
};
#endif /* 0*/
-errno_t
+errno_t
VNOP_OFFTOBLK(struct vnode *vp, off_t offset, daddr64_t *lblkno)
{
int _err;
struct vnop_offtoblk_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = &vnop_offtoblk_desc;
a.a_vp = vp;
a.a_offset = offset;
a.a_lblkno = lblkno;
- thread_safe = THREAD_SAFE_FS(vp);
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
_err = (*vp->v_op[vnop_offtoblk_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
+ DTRACE_FSINFO(offtoblk, vnode_t, vp);
+
+ return _err;
+}
+
+#if 0
+/*
+*#
+*#% ap vp L L L
+*#
+*/
+struct vnop_verify_args {
+ struct vnodeop_desc *a_desc;
+ vnode_t a_vp;
+ off_t a_foffset;
+ char *a_buf;
+ size_t a_bufsize;
+ size_t *a_verifyblksize;
+ int a_flags;
+ vfs_context_t a_context;
+};
+#endif
+
+errno_t
+VNOP_VERIFY(struct vnode *vp, off_t foffset, uint8_t *buf, size_t bufsize,
+ size_t *verify_block_size, vnode_verify_flags_t flags, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_verify_args a;
+
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
+ }
+ a.a_desc = &vnop_verify_desc;
+ a.a_vp = vp;
+ a.a_foffset = foffset;
+ a.a_buf = buf;
+ a.a_bufsize = bufsize;
+ a.a_verifyblksize = verify_block_size;
+ a.a_flags = flags;
+ a.a_context = ctx;
+
+ _err = (*vp->v_op[vnop_verify_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(verify, vnode_t, vp);
+
+ /* It is not an error for a filesystem to not support this VNOP */
+ if (_err == ENOTSUP) {
+ if (!buf && verify_block_size) {
+ *verify_block_size = 0;
+ }
+
+ _err = 0;
}
- return (_err);
+
+ return _err;
}
#if 0
/*
- *#
- *#% blockmap vp L L L
- *#
- */
+*#
+*#% blockmap vp L L L
+*#
+*/
struct vnop_blockmap_args {
struct vnodeop_desc *a_desc;
vnode_t a_vp;
vfs_context_t a_context;
};
#endif /* 0*/
-errno_t
-VNOP_BLOCKMAP(struct vnode *vp, off_t foffset, size_t size, daddr64_t *bpn, size_t *run, void *poff, int flags, vfs_context_t context)
+errno_t
+VNOP_BLOCKMAP(struct vnode *vp, off_t foffset, size_t size, daddr64_t *bpn, size_t *run, void *poff, int flags, vfs_context_t ctx)
{
int _err;
struct vnop_blockmap_args a;
- int thread_safe;
- int funnel_state = 0;
- struct vfs_context acontext;
+ size_t localrun = 0;
- if (context == NULL) {
- acontext.vc_proc = current_proc();
- acontext.vc_ucred = kauth_cred_get();
- context = &acontext;
+ if (ctx == NULL) {
+ ctx = vfs_context_current();
}
a.a_desc = &vnop_blockmap_desc;
a.a_vp = vp;
a.a_foffset = foffset;
a.a_size = size;
a.a_bpn = bpn;
- a.a_run = run;
+ a.a_run = &localrun;
a.a_poff = poff;
a.a_flags = flags;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
- }
_err = (*vp->v_op[vnop_blockmap_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- (void) thread_funnel_set(kernel_flock, funnel_state);
+ DTRACE_FSINFO(blockmap, vnode_t, vp);
+
+ /*
+ * We used a local variable to request information from the underlying
+ * filesystem about the length of the I/O run in question. If
+ * we get malformed output from the filesystem, we cap it to the length
+ * requested, at most. Update 'run' on the way out.
+ */
+ if (_err == 0) {
+ if (localrun > size) {
+ localrun = size;
+ }
+
+ if (run) {
+ *run = localrun;
+ }
}
- return (_err);
+
+ return _err;
}
#if 0
};
#endif /* 0*/
-errno_t
+errno_t
VNOP_STRATEGY(struct buf *bp)
{
int _err;
struct vnop_strategy_args a;
+ vnode_t vp = buf_vnode(bp);
a.a_desc = &vnop_strategy_desc;
a.a_bp = bp;
- _err = (*buf_vnode(bp)->v_op[vnop_strategy_desc.vdesc_offset])(&a);
- return (_err);
+ _err = (*vp->v_op[vnop_strategy_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(strategy, vnode_t, vp);
+ return _err;
}
#if 0
buf_t a_bp;
};
#endif /* 0*/
-errno_t
+errno_t
VNOP_BWRITE(struct buf *bp)
{
int _err;
struct vnop_bwrite_args a;
+ vnode_t vp = buf_vnode(bp);
a.a_desc = &vnop_bwrite_desc;
a.a_bp = bp;
- _err = (*buf_vnode(bp)->v_op[vnop_bwrite_desc.vdesc_offset])(&a);
- return (_err);
+ _err = (*vp->v_op[vnop_bwrite_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(bwrite, vnode_t, vp);
+ return _err;
}
#if 0
};
#endif
errno_t
-VNOP_KQFILT_ADD(struct vnode *vp, struct knote *kn, vfs_context_t context)
+VNOP_KQFILT_ADD(struct vnode *vp, struct knote *kn, vfs_context_t ctx)
{
int _err;
struct vnop_kqfilt_add_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = VDESC(vnop_kqfilt_add);
a.a_vp = vp;
a.a_kn = kn;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_kqfilt_add_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return(_err);
+ DTRACE_FSINFO(kqfilt_add, vnode_t, vp);
+
+ return _err;
}
#if 0
};
#endif
errno_t
-VNOP_KQFILT_REMOVE(struct vnode *vp, uintptr_t ident, vfs_context_t context)
+VNOP_KQFILT_REMOVE(struct vnode *vp, uintptr_t ident, vfs_context_t ctx)
{
int _err;
struct vnop_kqfilt_remove_args a;
- int thread_safe;
- int funnel_state = 0;
a.a_desc = VDESC(vnop_kqfilt_remove);
a.a_vp = vp;
a.a_ident = ident;
- a.a_context = context;
- thread_safe = THREAD_SAFE_FS(vp);
+ a.a_context = ctx;
- if (!thread_safe) {
- if ( (_err = lock_fsnode(vp, &funnel_state)) ) {
- return (_err);
- }
- }
_err = (*vp->v_op[vnop_kqfilt_remove_desc.vdesc_offset])(&a);
- if (!thread_safe) {
- unlock_fsnode(vp, &funnel_state);
- }
- return(_err);
+ DTRACE_FSINFO(kqfilt_remove, vnode_t, vp);
+
+ return _err;
+}
+
+errno_t
+VNOP_MONITOR(vnode_t vp, uint32_t events, uint32_t flags, void *handle, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_monitor_args a;
+
+ a.a_desc = VDESC(vnop_monitor);
+ a.a_vp = vp;
+ a.a_events = events;
+ a.a_flags = flags;
+ a.a_handle = handle;
+ a.a_context = ctx;
+
+ _err = (*vp->v_op[vnop_monitor_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(monitor, vnode_t, vp);
+
+ return _err;
+}
+
+#if 0
+struct vnop_setlabel_args {
+ struct vnodeop_desc *a_desc;
+ struct vnode *a_vp;
+ struct label *a_vl;
+ vfs_context_t a_context;
+};
+#endif
+errno_t
+VNOP_SETLABEL(struct vnode *vp, struct label *label, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_setlabel_args a;
+
+ a.a_desc = VDESC(vnop_setlabel);
+ a.a_vp = vp;
+ a.a_vl = label;
+ a.a_context = ctx;
+
+ _err = (*vp->v_op[vnop_setlabel_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(setlabel, vnode_t, vp);
+
+ return _err;
+}
+
+
+#if NAMEDSTREAMS
+/*
+ * Get a named streamed
+ */
+errno_t
+VNOP_GETNAMEDSTREAM(vnode_t vp, vnode_t *svpp, const char *name, enum nsoperation operation, int flags, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_getnamedstream_args a;
+
+ a.a_desc = &vnop_getnamedstream_desc;
+ a.a_vp = vp;
+ a.a_svpp = svpp;
+ a.a_name = name;
+ a.a_operation = operation;
+ a.a_flags = flags;
+ a.a_context = ctx;
+
+ _err = (*vp->v_op[vnop_getnamedstream_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(getnamedstream, vnode_t, vp);
+ return _err;
+}
+
+/*
+ * Create a named streamed
+ */
+errno_t
+VNOP_MAKENAMEDSTREAM(vnode_t vp, vnode_t *svpp, const char *name, int flags, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_makenamedstream_args a;
+
+ a.a_desc = &vnop_makenamedstream_desc;
+ a.a_vp = vp;
+ a.a_svpp = svpp;
+ a.a_name = name;
+ a.a_flags = flags;
+ a.a_context = ctx;
+
+ _err = (*vp->v_op[vnop_makenamedstream_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(makenamedstream, vnode_t, vp);
+ return _err;
}
+
+/*
+ * Remove a named streamed
+ */
+errno_t
+VNOP_REMOVENAMEDSTREAM(vnode_t vp, vnode_t svp, const char *name, int flags, vfs_context_t ctx)
+{
+ int _err;
+ struct vnop_removenamedstream_args a;
+
+ a.a_desc = &vnop_removenamedstream_desc;
+ a.a_vp = vp;
+ a.a_svp = svp;
+ a.a_name = name;
+ a.a_flags = flags;
+ a.a_context = ctx;
+
+ _err = (*vp->v_op[vnop_removenamedstream_desc.vdesc_offset])(&a);
+ DTRACE_FSINFO(removenamedstream, vnode_t, vp);
+ return _err;
+}
+#endif
projects / apple / xnu.git / blobdiff