/*
- * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
- *
- * @APPLE_LICENSE_OSREFERENCE_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
- * compliance with the License. The rights granted to you under the
- * License may not be used to create, or enable the creation or
- * redistribution of, 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.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * 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,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ * 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
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * 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,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * 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_LICENSE_OSREFERENCE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
*
* @(#)vnode.h 8.17 (Berkeley) 5/20/95
*/
-
+/*
+ * 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.
+ */
+
#ifndef _SYS_VNODE_INTERNAL_H_
#define _SYS_VNODE_INTERNAL_H_
-#define INTERIM_FSNODE_LOCK 1
-
#include <sys/appleapiopts.h>
#include <sys/cdefs.h>
#include <sys/queue.h>
#include <sys/vnode.h>
#include <sys/namei.h>
#include <sys/vfs_context.h>
+#include <sys/sysctl.h>
struct lockf;
+struct label;
LIST_HEAD(buflists, buf);
-
-struct unsafe_fsnode {
- lck_mtx_t fsnodelock;
- int32_t fsnode_count;
- void * fsnodeowner;
+#if CONFIG_TRIGGERS
+/*
+ * VFS Internal (private) trigger vnode resolver info.
+ */
+struct vnode_resolve {
+ lck_mtx_t vr_lock; /* protects vnode_resolve_t fields */
+ trigger_vnode_resolve_callback_t vr_resolve_func;
+ trigger_vnode_unresolve_callback_t vr_unresolve_func;
+ trigger_vnode_rearm_callback_t vr_rearm_func;
+ trigger_vnode_reclaim_callback_t vr_reclaim_func;
+ void * vr_data; /* private data for resolver */
+ uint32_t vr_flags;
+ uint32_t vr_lastseq;
};
+typedef struct vnode_resolve *vnode_resolve_t;
+
+/* private vr_flags */
+#define VNT_RESOLVED (1UL << 31)
+#define VNT_VFS_UNMOUNTED (1UL << 30)
+#define VNT_EXTERNAL (1UL << 29)
+
+#endif /* CONFIG_TRIGGERS */
/*
* Reading or writing any of these items requires holding the appropriate lock.
* the rest of the structure is protected by the vnode_lock
*/
struct vnode {
- lck_mtx_t v_lock; /* vnode mutex */
- TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
- TAILQ_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */
- LIST_HEAD(, namecache) v_nclinks; /* name cache entries that name this vnode */
- LIST_HEAD(, namecache) v_ncchildren; /* name cache entries that regard us as there parent */
- vnode_t v_defer_reclaimlist; /* in case we have to defer the reclaim to avoid recursion */
- u_long v_flag; /* vnode flags (see below) */
- u_short v_lflag; /* vnode local and named ref flags */
- u_char v_iterblkflags; /* buf iterator flags */
- u_char v_references; /* number of times io_count has been granted */
- int32_t v_kusecount; /* count of in-kernel refs */
- int32_t v_usecount; /* reference count of users */
- int32_t v_iocount; /* iocounters */
- void * v_owner; /* act that owns the vnode */
- enum vtype v_type; /* vnode type */
- u_long v_id; /* identity of vnode contents */
+ lck_mtx_t v_lock; /* vnode mutex */
+ TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
+ TAILQ_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */
+ TAILQ_HEAD(, namecache) v_ncchildren; /* name cache entries that regard us as their parent */
+ LIST_HEAD(, namecache) v_nclinks; /* name cache entries that name this vnode */
+ vnode_t v_defer_reclaimlist; /* in case we have to defer the reclaim to avoid recursion */
+ uint32_t v_listflag; /* flags protected by the vnode_list_lock (see below) */
+ uint32_t v_flag; /* vnode flags (see below) */
+ uint16_t v_lflag; /* vnode local and named ref flags */
+ uint8_t v_iterblkflags; /* buf iterator flags */
+ uint8_t v_references; /* number of times io_count has been granted */
+ int32_t v_kusecount; /* count of in-kernel refs */
+ int32_t v_usecount; /* reference count of users */
+ int32_t v_iocount; /* iocounters */
+ void * v_owner; /* act that owns the vnode */
+ uint16_t v_type; /* vnode type */
+ uint16_t v_tag; /* type of underlying data */
+ uint32_t v_id; /* identity of vnode contents */
union {
- struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
- struct socket *vu_socket; /* unix ipc (VSOCK) */
- struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
- struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
- struct ubc_info *vu_ubcinfo; /* valid for (VREG) */
+ struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
+ struct socket *vu_socket; /* unix ipc (VSOCK) */
+ struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
+ struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
+ struct ubc_info *vu_ubcinfo; /* valid for (VREG) */
} v_un;
- struct buflists v_cleanblkhd; /* clean blocklist head */
- struct buflists v_dirtyblkhd; /* dirty blocklist head */
- kauth_cred_t v_cred;
- int v_cred_timestamp;
- long v_numoutput; /* num of writes in progress */
- long v_writecount; /* reference count of writers */
- char * v_name; /* name component of the vnode */
- vnode_t v_parent; /* pointer to parent vnode */
-#ifdef INTERIM_FSNODE_LOCK
- struct lockf *v_lockf; /* advisory lock list head */
- struct unsafe_fsnode *v_unsafefs; /* pointer to struct used to lock */
-#endif /* vnodes on unsafe filesystems */
- int (**v_op)(void *); /* vnode operations vector */
- enum vtagtype v_tag; /* type of underlying data */
- mount_t v_mount; /* ptr to vfs we are in */
- void * v_data; /* private data for fs */
+ struct buflists v_cleanblkhd; /* clean blocklist head */
+ struct buflists v_dirtyblkhd; /* dirty blocklist head */
+ struct klist v_knotes; /* knotes attached to this vnode */
+ /*
+ * the following 4 fields are protected
+ * by the name_cache_lock held in
+ * excluive mode
+ */
+ kauth_cred_t v_cred; /* last authorized credential */
+ kauth_action_t v_authorized_actions; /* current authorized actions for v_cred */
+ int v_cred_timestamp; /* determine if entry is stale for MNTK_AUTH_OPAQUE */
+ int v_nc_generation; /* changes when nodes are removed from the name cache */
+ /*
+ * back to the vnode lock for protection
+ */
+ int32_t v_numoutput; /* num of writes in progress */
+ int32_t v_writecount; /* reference count of writers */
+ const char *v_name; /* name component of the vnode */
+ vnode_t v_parent; /* pointer to parent vnode */
+ struct lockf *v_lockf; /* advisory lock list head */
+ int(**v_op)(void *); /* vnode operations vector */
+ mount_t v_mount; /* ptr to vfs we are in */
+ void * v_data; /* private data for fs */
+#if CONFIG_MACF
+ struct label *v_label; /* MAC security label */
+#endif
+#if CONFIG_TRIGGERS
+ vnode_resolve_t v_resolve; /* trigger vnode resolve info (VDIR only) */
+#endif /* CONFIG_TRIGGERS */
+#if CONFIG_FIRMLINKS
+ vnode_t v_fmlink; /* firmlink if set (VDIR only), Points to source
+ * if VFLINKTARGET is set, if VFLINKTARGET is not
+ * set, points to target */
+#endif /* CONFIG_FIRMLINKS */
};
-#define v_mountedhere v_un.vu_mountedhere
-#define v_socket v_un.vu_socket
-#define v_specinfo v_un.vu_specinfo
-#define v_fifoinfo v_un.vu_fifoinfo
-#define v_ubcinfo v_un.vu_ubcinfo
+#define v_mountedhere v_un.vu_mountedhere
+#define v_socket v_un.vu_socket
+#define v_specinfo v_un.vu_specinfo
+#define v_fifoinfo v_un.vu_fifoinfo
+#define v_ubcinfo v_un.vu_ubcinfo
/*
* v_iterblkflags
*/
-#define VBI_ITER 0x1
-#define VBI_ITERWANT 0x2
-#define VBI_CLEAN 0x4
-#define VBI_DIRTY 0x8
-#define VBI_NEWBUF 0x10
+#define VBI_ITER 0x1
+#define VBI_ITERWANT 0x2
+#define VBI_CLEAN 0x4
+#define VBI_DIRTY 0x8
+#define VBI_NEWBUF 0x10
+/*
+ * v_listflag
+ */
+#define VLIST_RAGE 0x01 /* vnode is currently in the rapid age list */
+#define VLIST_DEAD 0x02 /* vnode is currently in the dead list */
+#define VLIST_ASYNC_WORK 0x04 /* vnode is currently on the deferred async work queue */
/*
* v_lflags
*/
-#define VL_SUSPENDED 0x0001 /* vnode is suspended */
-#define VL_DRAIN 0x0002 /* vnode is being drained */
-#define VL_TERMINATE 0x0004 /* vnode is marked for termination */
-#define VL_TERMWANT 0x0008 /* vnode is marked for termination */
-#define VL_DEAD 0x0010 /* vnode is dead and completed recycle */
-#define VL_MARKTERM 0x0020 /* vnode is dead and completed recycle */
-#define VL_MOUNTDEAD 0x0040 /* v_moutnedhere is dead */
-#define VL_NEEDINACTIVE 0x0080 /* delay VNOP_INACTIVE until iocount goes to 0 */
+#define VL_SUSPENDED 0x0001 /* vnode is suspended */
+#define VL_DRAIN 0x0002 /* vnode is being drained */
+#define VL_TERMINATE 0x0004 /* vnode is in the process of being recycled */
+#define VL_TERMWANT 0x0008 /* there's a waiter for recycle finish (vnode_getiocount)*/
+#define VL_DEAD 0x0010 /* vnode is dead, cleaned of filesystem-specific info */
+#define VL_MARKTERM 0x0020 /* vnode should be recycled when no longer referenced */
+#define VL_NEEDINACTIVE 0x0080 /* delay VNOP_INACTIVE until iocount goes to 0 */
+
+#define VL_LABEL 0x0100 /* vnode is marked for labeling */
+#define VL_LABELWAIT 0x0200 /* vnode is marked for labeling */
+#define VL_LABELED 0x0400 /* vnode is labeled */
+#define VL_LWARNED 0x0800
+#define VL_HASSTREAMS 0x1000 /* vnode has had at least one associated named stream vnode (may not have one any longer) */
+
+#define VNAMED_UBC 0x2000 /* ubc named reference */
+#define VNAMED_MOUNT 0x4000 /* mount point named reference */
+#define VNAMED_FSHASH 0x8000 /* FS hash named reference */
-#define VNAMED_UBC 0x2000 /* ubc named reference */
-#define VNAMED_MOUNT 0x4000 /* mount point named reference */
-#define VNAMED_FSHASH 0x8000 /* FS hash named reference */
+/*
+ * v_flags
+ */
+#define VROOT 0x000001 /* root of its file system */
+#define VTEXT 0x000002 /* vnode is a pure text prototype */
+#define VSYSTEM 0x000004 /* vnode being used by kernel */
+#define VISTTY 0x000008 /* vnode represents a tty */
+#define VRAGE 0x000010 /* vnode is in rapid age state */
+#define VBDEVVP 0x000020 /* vnode created by bdevvp */
+#define VDEVFLUSH 0x000040 /* device vnode after vflush */
+#define VMOUNT 0x000080 /* mount operation in progress */
+#define VBWAIT 0x000100 /* waiting for output to complete */
+#define VSHARED_DYLD 0x000200 /* vnode is a dyld shared cache file */
+#define VNOCACHE_DATA 0x000400 /* don't keep data cached once it's been consumed */
+#define VSTANDARD 0x000800 /* vnode obtained from common pool */
+#define VAGE 0x001000 /* Insert vnode at head of free list */
+#define VRAOFF 0x002000 /* read ahead disabled */
+#define VNCACHEABLE 0x004000 /* vnode is allowed to be put back in name cache */
+#if NAMEDSTREAMS
+#define VISSHADOW 0x008000 /* vnode is a shadow file */
+#endif
+#define VSWAP 0x010000 /* vnode is being used as swapfile */
+#define VTHROTTLED 0x020000 /* writes or pageouts have been throttled */
+/* wakeup tasks waiting when count falls below threshold */
+#define VNOFLUSH 0x040000 /* don't vflush() if SKIPSYSTEM */
+#define VLOCKLOCAL 0x080000 /* this vnode does adv locking in vfs */
+#define VISHARDLINK 0x100000 /* hard link needs special processing on lookup and in volfs */
+#define VISUNION 0x200000 /* union special processing */
+#define VISNAMEDSTREAM 0x400000 /* vnode is a named stream (eg HFS resource fork) */
+#define VOPENEVT 0x800000 /* if process is P_CHECKOPENEVT, then or in the O_EVTONLY flag on open */
+#define VNEEDSSNAPSHOT 0x1000000
+#define VNOCS 0x2000000 /* is there no code signature available */
+#define VISDIRTY 0x4000000 /* vnode will need IO if reclaimed */
+#define VFASTDEVCANDIDATE 0x8000000 /* vnode is a candidate to store on a fast device */
+#define VAUTOCANDIDATE 0x10000000 /* vnode was automatically marked as a fast-dev candidate */
+#define VFMLINKTARGET 0x20000000 /* vnode is firmlink target */
+/*
+ * 0x40000000 not used
+ * 0x80000000 not used.
+ */
+/*
+ * This structure describes vnode data which is specific to a file descriptor.
+ * It is currently used only for file descriptors which are for opened for
+ * directories.
+ */
+struct fd_vn_data {
+ lck_mtx_t fv_lock; /* Used to serialize directory enumeration on fd */
+ off_t fv_offset; /* Offset to be used */
+ void *fv_dircookie; /* If FS doesn't like offsets in directories */
+ caddr_t fv_buf; /* Temporary buffer to store directory entries */
+ size_t fv_bufsiz; /* Valid size of fv_buf */
+ size_t fv_bufdone; /* How much of fv_buf is processed */
+ size_t fv_bufallocsiz; /* Allocation size determined for Buffer*/
+ off_t fv_soff; /* Starting FS offset for this buffer */
+ off_t fv_eoff; /* Ending FS offset for this buffer */
+ int fv_eofflag;/* Does fv_eoff represent EOF ? */
+};
/*
- * v_flags
+ * FV_DIRBUF_START_SIZ is the initial size of the buffer passed to VNOP_READDIR.
+ * That may not be enough for some filesytems so the current algorithm works its
+ * way upto FV_DIRBUF_MAX_SIZ
*/
-#define VROOT 0x000001 /* root of its file system */
-#define VTEXT 0x000002 /* vnode is a pure text prototype */
-#define VSYSTEM 0x000004 /* vnode being used by kernel */
-#define VISTTY 0x000008 /* vnode represents a tty */
-#define VWASMAPPED 0x000010 /* vnode was mapped before */
-#define VTERMINATE 0x000020 /* terminating memory object */
-#define VTERMWANT 0x000040 /* wating for memory object death */
-#define VMOUNT 0x000080 /* mount operation in progress */
-#define VBWAIT 0x000100 /* waiting for output to complete */
-#define VALIASED 0x000200 /* vnode has an alias */
-#define VNOCACHE_DATA 0x000400 /* don't keep data cached once it's been consumed */
-#define VSTANDARD 0x000800 /* vnode obtained from common pool */
-#define VAGE 0x001000 /* Insert vnode at head of free list */
-#define VRAOFF 0x002000 /* read ahead disabled */
-#define VNCACHEABLE 0x004000 /* vnode is allowed to be put back in name cache */
-#define VUINACTIVE 0x008000 /* UBC vnode is on inactive list */
-#define VSWAP 0x010000 /* vnode is being used as swapfile */
-#define VTHROTTLED 0x020000 /* writes or pageouts have been throttled */
- /* wakeup tasks waiting when count falls below threshold */
-#define VNOFLUSH 0x040000 /* don't vflush() if SKIPSYSTEM */
-#define VLOCKLOCAL 0x080000 /* this vnode does adv locking in vfs */
-#define VISHARDLINK 0x100000 /* hard link needs special processing on lookup and in volfs */
-
-#define VCRED_EXPIRED 2 /* number of seconds to keep cached credential valid */
+#define FV_DIRBUF_DIRENTRY_SIZ (sizeof(struct direntry))
+#define FV_DIRBUF_START_SIZ FV_DIRBUF_DIRENTRY_SIZ
+#define FV_DIRBUF_MAX_SIZ (4*(sizeof(struct direntry)))
+#define FV_LOCK(fvd) lck_mtx_lock(&(((struct fd_vn_data *)fvd)->fv_lock))
+#define FV_UNLOCK(fvd) lck_mtx_unlock(&(((struct fd_vn_data *)fvd)->fv_lock))
/*
* Global vnode data.
*/
-extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
+extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
+
+#ifdef CONFIG_IMGSRC_ACCESS
+#define MAX_IMAGEBOOT_NESTING 2
+extern struct vnode *imgsrc_rootvnodes[];
+#endif /* CONFIG_IMGSRC_ACCESS */
/*
/*
* Flags for vdesc_flags:
*/
-#define VDESC_MAX_VPS 16
+#define VDESC_MAX_VPS 16
/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
-#define VDESC_VP0_WILLRELE 0x0001
-#define VDESC_VP1_WILLRELE 0x0002
-#define VDESC_VP2_WILLRELE 0x0004
-#define VDESC_VP3_WILLRELE 0x0008
-#define VDESC_NOMAP_VPP 0x0100
-#define VDESC_VPP_WILLRELE 0x0200
+#define VDESC_VP0_WILLRELE 0x00001
+#define VDESC_VP1_WILLRELE 0x00002
+#define VDESC_VP2_WILLRELE 0x00004
+#define VDESC_VP3_WILLRELE 0x00008
+#define VDESC_NOMAP_VPP 0x00100
+#define VDESC_VPP_WILLRELE 0x00200
+
+#define VDESC_DISABLED 0x10000 /* descriptor defined but op is unused, has no op slot */
/*
* VDESC_NO_OFFSET is used to identify the end of the offset list
* This structure describes the vnode operation taking place.
*/
struct vnodeop_desc {
- int vdesc_offset; /* offset in vector--first for speed */
- char *vdesc_name; /* a readable name for debugging */
- int vdesc_flags; /* VDESC_* flags */
+ int vdesc_offset; /* offset in vector--first for speed */
+ const char *vdesc_name; /* a readable name for debugging */
+ int vdesc_flags; /* VDESC_* flags */
/*
* These ops are used by bypass routines to map and locate arguments.
* they are useful to (for example) transport layers.
* Nameidata is useful because it has a cred in it.
*/
- int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
- int vdesc_vpp_offset; /* return vpp location */
- int vdesc_cred_offset; /* cred location, if any */
- int vdesc_proc_offset; /* proc location, if any */
- int vdesc_componentname_offset; /* if any */
- int vdesc_context_offset; /* context location, if any */
+ int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
+ int vdesc_vpp_offset; /* return vpp location */
+ int vdesc_cred_offset; /* cred location, if any */
+ int vdesc_proc_offset; /* proc location, if any */
+ int vdesc_componentname_offset; /* if any */
+ int vdesc_context_offset; /* context location, if any */
/*
* Finally, we've got a list of private data (about each operation)
* for each transport layer. (Support to manage this list is not
* yet part of BSD.)
*/
- caddr_t *vdesc_transports;
+ caddr_t *vdesc_transports;
};
/*
*/
extern struct vnodeop_desc *vnodeop_descs[];
-/*
- * Interlock for scanning list of vnodes attached to a mountpoint
- */
-extern void * mntvnode_slock;
/*
* This macro is very helpful in defining those offsets in the vdesc struct.
* Crays, so if you decide to port this to such a serious machine,
* you might want to consult Intrisics.h's XtOffset{,Of,To}.
*/
-#define VOPARG_OFFSET(p_type,field) \
- ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
-#define VOPARG_OFFSETOF(s_type,field) \
+#define VOPARG_OFFSET(p_type, field) \
+ ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
+#define VOPARG_OFFSETOF(s_type, field) \
VOPARG_OFFSET(s_type*,field)
-#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
+#define VOPARG_OFFSETTO(S_TYPE, S_OFFSET, STRUCT_P) \
((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
* vclean changes the ops vector and then wants to call ops with the old
* vector.
*/
-#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
+#define VOCALL(OPSV, OFF, AP) (( *((OPSV)[(OFF)])) (AP))
/*
* This call works for vnodes in the kernel.
*/
-#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
+#define VCALL(VP, OFF, AP) VOCALL((VP)->v_op,(OFF),(AP))
#define VDESC(OP) (& __CONCAT(OP,_desc))
#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
+struct ostat;
+
+/* bdevvp moved to vnode.h as private KPI */
+void cvtstat(struct stat *st, struct ostat *ost);
+void vprint(const char *label, struct vnode *vp);
+
+
+__private_extern__ int set_package_extensions_table(user_addr_t data, int nentries, int maxwidth);
+int vn_rdwr_64(enum uio_rw rw, struct vnode *vp, uint64_t base,
+ int64_t len, off_t offset, enum uio_seg segflg,
+ int ioflg, kauth_cred_t cred, int64_t *aresid,
+ struct proc *p);
+#if CONFIG_MACF
+int vn_setlabel(struct vnode *vp, struct label *intlabel,
+ vfs_context_t context);
+#endif
+void fifo_printinfo(struct vnode *vp);
+int vn_open(struct nameidata *ndp, int fmode, int cmode);
+int vn_open_modflags(struct nameidata *ndp, int *fmode, int cmode);
+int vn_open_auth(struct nameidata *ndp, int *fmode, struct vnode_attr *);
+int vn_close(vnode_t, int flags, vfs_context_t ctx);
+errno_t vn_remove(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, int32_t flags, struct vnode_attr *vap, vfs_context_t ctx);
+errno_t 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,
+ uint32_t flags, vfs_context_t ctx);
+
+void lock_vnode_and_post(vnode_t, int);
+
+#define post_event_if_success(_vp, _error, _event) \
+ do { \
+ if (0 == (_error)) { \
+ lock_vnode_and_post((_vp), (_event)); \
+ } \
+ } while (0)
+
+/* Authorization subroutines */
+int vn_authorize_open_existing(vnode_t vp, struct componentname *cnp, int fmode, vfs_context_t ctx, void *reserved);
+int vn_authorize_create(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*);
+int vn_attribute_prepare(vnode_t dvp, struct vnode_attr *vap, uint32_t *defaulted_fieldsp, vfs_context_t ctx);
+void vn_attribute_cleanup(struct vnode_attr *vap, uint32_t defaulted_fields);
+int vn_authorize_rename(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp,
+ struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp,
+ vfs_context_t ctx, void *reserved);
+int vn_authorize_renamex(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp,
+ struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp,
+ vfs_context_t ctx, vfs_rename_flags_t flags, void *reserved);
+int vn_authorize_renamex_with_paths(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp, const char *from_path,
+ struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp, const char *to_path,
+ vfs_context_t ctx, vfs_rename_flags_t flags, void *reserved);
+int vn_authorize_rmdir(vnode_t dvp, vnode_t vp, struct componentname *cnp, vfs_context_t ctx, void *reserved);
+
+typedef int (*vn_create_authorizer_t)(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*);
+int vn_authorize_mkdir(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*);
+int vn_authorize_null(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*);
+int vnode_attr_authorize_dir_clone(struct vnode_attr *vap, kauth_action_t action,
+ struct vnode_attr *dvap, vnode_t sdvp, mount_t mp, dir_clone_authorizer_op_t vattr_op,
+ uint32_t flags, vfs_context_t ctx, void *reserved);
+/* End of authorization subroutines */
+
+#define VN_CREATE_NOAUTH (1<<0)
+#define VN_CREATE_NOINHERIT (1<<1)
+#define VN_CREATE_UNION (1<<2)
+#define VN_CREATE_NOLABEL (1<<3)
+#define VN_CREATE_DOOPEN (1<<4) /* Open file if a batched operation is available */
+errno_t vn_create(vnode_t, vnode_t *, struct nameidata *, struct vnode_attr *, uint32_t, int, uint32_t*, vfs_context_t);
+int vn_mkdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx);
+int vn_rmdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx);
+
+int vn_getxattr(vnode_t, const char *, uio_t, size_t *, int, vfs_context_t);
+int vn_setxattr(vnode_t, const char *, uio_t, int, vfs_context_t);
+int vn_removexattr(vnode_t, const char *, int, vfs_context_t);
+int vn_listxattr(vnode_t, uio_t, size_t *, int, vfs_context_t);
+
+#if NAMEDSTREAMS
+errno_t vnode_getnamedstream(vnode_t, vnode_t *, const char *, enum nsoperation, int, vfs_context_t);
+errno_t vnode_makenamedstream(vnode_t, vnode_t *, const char *, int, vfs_context_t);
+errno_t vnode_removenamedstream(vnode_t, vnode_t, const char *, int, vfs_context_t);
+errno_t vnode_flushnamedstream(vnode_t vp, vnode_t svp, vfs_context_t context);
+errno_t vnode_relenamedstream(vnode_t vp, vnode_t svp);
+errno_t vnode_verifynamedstream(vnode_t vp);
+#endif
+
+
+void nchinit(void);
+int resize_namecache(int newsize);
+void name_cache_lock_shared(void);
+void name_cache_lock(void);
+void name_cache_unlock(void);
+void cache_enter_with_gen(vnode_t dvp, vnode_t vp, struct componentname *cnp, int gen);
+const char *cache_enter_create(vnode_t dvp, vnode_t vp, struct componentname *cnp);
+
+extern int nc_disabled;
+
+#define vnode_lock_convert(v) lck_mtx_convert_spin(&(v)->v_lock)
+
+void vnode_lock_spin(vnode_t);
+
+
+void vnode_list_lock(void);
+void vnode_list_unlock(void);
+
+#define VNODE_REF_FORCE 0x1
+int vnode_ref_ext(vnode_t, int, int);
+
+void vnode_rele_internal(vnode_t, int, int, int);
+#ifdef BSD_KERNEL_PRIVATE
+int vnode_getalways(vnode_t);
+int vget_internal(vnode_t, int, int);
+errno_t vnode_getiocount(vnode_t, unsigned int, int);
+#endif /* BSD_KERNEL_PRIVATE */
+int vnode_get_locked(vnode_t);
+int vnode_put_locked(vnode_t);
+
+int vnode_issock(vnode_t);
+int vnode_isaliased(vnode_t);
+
+void unlock_fsnode(vnode_t, int *);
+int lock_fsnode(vnode_t, int *);
+
+errno_t vnode_resume(vnode_t);
+errno_t vnode_suspend(vnode_t);
+
+
+errno_t vnode_mtime(vnode_t, struct timespec *, vfs_context_t);
+errno_t vnode_flags(vnode_t, uint32_t *, vfs_context_t);
+
+errno_t vnode_size(vnode_t, off_t *, vfs_context_t);
+errno_t vnode_setsize(vnode_t, off_t, int ioflag, vfs_context_t);
+int vnode_setattr_fallback(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx);
+int vnode_isspec(vnode_t vp);
+
+
+#ifdef BSD_KERNEL_PRIVATE
+
+typedef uint32_t compound_vnop_id_t;
+#define COMPOUND_VNOP_OPEN 0x01
+#define COMPOUND_VNOP_MKDIR 0x02
+#define COMPOUND_VNOP_RENAME 0x04
+#define COMPOUND_VNOP_REMOVE 0x08
+#define COMPOUND_VNOP_RMDIR 0x10
+
+int vnode_compound_rename_available(vnode_t vp);
+int vnode_compound_rmdir_available(vnode_t vp);
+int vnode_compound_mkdir_available(vnode_t vp);
+int vnode_compound_remove_available(vnode_t vp);
+int vnode_compound_open_available(vnode_t vp);
+int vnode_compound_op_available(vnode_t, compound_vnop_id_t);
+#endif /* BSD_KERNEL_PRIVATE */
+
+void vn_setunionwait(vnode_t);
+void vn_checkunionwait(vnode_t);
+void vn_clearunionwait(vnode_t, int);
+void SPECHASH_LOCK(void);
+void SPECHASH_UNLOCK(void);
-int build_path(vnode_t first_vp, char *buff, int buflen, int *outlen);
-int bdevvp(dev_t dev, struct vnode **vpp);
-void cvtstat(struct stat *st, struct ostat *ost);
-void vprint(const char *label, struct vnode *vp);
-
-
-__private_extern__ int is_package_name(char *name, int len);
-__private_extern__ int set_package_extensions_table(void *data, int nentries, int maxwidth);
-int vn_rdwr(enum uio_rw rw, struct vnode *vp, caddr_t base,
- int len, off_t offset, enum uio_seg segflg, int ioflg,
- struct ucred *cred, int *aresid, struct proc *p);
-int vn_rdwr_64(enum uio_rw rw, struct vnode *vp, uint64_t base,
- int64_t len, off_t offset, enum uio_seg segflg,
- int ioflg, struct ucred *cred, int *aresid,
- struct proc *p);
-void fifo_printinfo(struct vnode *vp);
-int vn_lock(struct vnode *vp, int flags, struct proc *p);
-int vn_open(struct nameidata *ndp, int fmode, int cmode);
-int vn_open_modflags(struct nameidata *ndp, int *fmode, int cmode);
-int vn_open_auth(struct nameidata *ndp, int *fmode, struct vnode_attr *);
-int vn_close(vnode_t, int flags, struct ucred *cred, struct proc *p);
-
-#define VN_CREATE_NOAUTH (1<<0)
-#define VN_CREATE_NOINHERIT (1<<1)
-errno_t vn_create(vnode_t, vnode_t *, struct componentname *, struct vnode_attr *, int flags, vfs_context_t);
-
+void vnode_authorize_init(void);
-int vn_getxattr(vnode_t, const char *, uio_t, size_t *, int, vfs_context_t);
-int vn_setxattr(vnode_t, const char *, uio_t, int, vfs_context_t);
-int vn_removexattr(vnode_t, const char *, int, vfs_context_t);
-int vn_listxattr(vnode_t, uio_t, size_t *, int, vfs_context_t);
+void vfsinit(void);
+void vnode_lock(vnode_t);
+void vnode_unlock(vnode_t);
-void name_cache_lock(void);
-void name_cache_unlock(void);
+void vn_print_state(vnode_t /* vp */, const char * /* fmt */, ...)
+__printflike(2, 3);
-char * vnode_getname(vnode_t vp);
-void vnode_putname(char *name);
+#if DEVELOPMENT || DEBUG
+#define VNASSERT(exp, vp, msg) \
+do { \
+ if (__improbable(!(exp))) { \
+ vn_print_state(vp, "VNASSERT failed %s:%d\n", __FILE__, \
+ __LINE__); \
+ panic msg; \
+ } \
+} while (0)
+#else
+#define VNASSERT(exp, vp, msg)
+#endif /* DEVELOPMENT || DEBUG */
-vnode_t vnode_getparent(vnode_t vp);
+/*
+ * XXX exported symbols; should be static
+ */
+void vfs_op_init(void);
+void vfs_opv_init(void);
-int vn_pathconf(vnode_t, int, register_t *, vfs_context_t);
+#ifdef BSD_KERNEL_PRIVATE
+int vfs_sysctl_node SYSCTL_HANDLER_ARGS;
+void vnode_setneedinactive(vnode_t);
+int vnode_hasnamedstreams(vnode_t); /* Does this vnode have associated named streams? */
-void vnode_list_lock(void);
-void vnode_list_unlock(void);
-int vnode_ref_ext(vnode_t, int);
-void vnode_rele_ext(vnode_t, int, int);
-void vnode_rele_internal(vnode_t, int, int, int);
-int vnode_getwithref(vnode_t);
-int vnode_put_locked(vnode_t);
+errno_t
+vnode_readdir64(struct vnode *vp, struct uio *uio, int flags, int *eofflag,
+ int *numdirent, vfs_context_t ctxp);
-int vnode_issock(vnode_t);
+void vnode_setswapmount(vnode_t);
+int64_t vnode_getswappin_avail(vnode_t);
-void unlock_fsnode(vnode_t, int *);
-int lock_fsnode(vnode_t, int *);
+int vnode_get_snapdir(vnode_t, vnode_t *, vfs_context_t);
-errno_t vnode_resume(vnode_t);
+#if CONFIG_TRIGGERS
+/* VFS Internal Vnode Trigger Interfaces (Private) */
+int vnode_trigger_resolve(vnode_t, struct nameidata *, vfs_context_t);
+void vnode_trigger_rearm(vnode_t, vfs_context_t);
+void vfs_nested_trigger_unmounts(mount_t, int, vfs_context_t);
+#endif /* CONFIG_TRIGGERS */
-errno_t vnode_size(vnode_t, off_t *, vfs_context_t);
-errno_t vnode_setsize(vnode_t, off_t, int ioflag, vfs_context_t);
-int vnode_setattr_fallback(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx);
+int build_path_with_parent(vnode_t, vnode_t /* parent */, char *, int, int *, int, vfs_context_t);
-void SPECHASH_LOCK(void);
-void SPECHASH_UNLOCK(void);
+void nspace_resolver_init(void);
+void nspace_resolver_exited(struct proc *);
-int check_cdevmounted(dev_t, enum vtype, int *);
+int vnode_materialize_dataless_file(vnode_t, uint64_t);
-void vnode_authorize_init(void);
+#endif /* BSD_KERNEL_PRIVATE */
#endif /* !_SYS_VNODE_INTERNAL_H_ */
projects / apple / xnu.git / blobdiff