/*
- * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * @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.
*
- * 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
+ * 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);
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 */
+ 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 */
- enum vtype v_type; /* vnode type */
- u_long v_id; /* identity of vnode contents */
+ 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) */
} 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 */
+ 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 */
-#ifdef INTERIM_FSNODE_LOCK
struct lockf *v_lockf; /* advisory lock list head */
+#ifndef __LP64__
struct unsafe_fsnode *v_unsafefs; /* pointer to struct used to lock */
-#endif /* vnodes on unsafe filesystems */
+#else
+ int32_t v_reserved1;
+ int32_t v_reserved2;
+#endif /* __LP64__ */
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 */
+#if CONFIG_MACF
+ struct label *v_label; /* MAC security label */
+#endif
};
#define v_mountedhere v_un.vu_mountedhere
#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 */
/*
* 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_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_MOUNTDEAD 0x0040 /* v_moutnedhere is dead */
#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 */
-
/*
* v_flags
*/
#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 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 VALIASED 0x000200 /* vnode has an alias */
+ /* Free slot here after removing VALIASED for radar #5971707 */
#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 */
+#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 VCRED_EXPIRED 2 /* number of seconds to keep cached credential valid */
-
+#define VISUNION 0x200000 /* union special processing */
+#if NAMEDSTREAMS
+#define VISNAMEDSTREAM 0x400000 /* vnode is a named stream (eg HFS resource fork) */
+#endif
+#define VOPENEVT 0x800000 /* if process is P_CHECKOPENEVT, then or in the O_EVTONLY flag on open */
/*
* Global vnode data.
*/
extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
+#ifdef CONFIG_IMGSRC_ACCESS
+extern struct vnode *imgsrc_rootvnode;
+#endif /* CONFIG_IMGSRC_ACCESS */
+
/*
* Mods for exensibility.
*/
struct vnodeop_desc {
int vdesc_offset; /* offset in vector--first for speed */
- char *vdesc_name; /* a readable name for debugging */
+ const char *vdesc_name; /* a readable name for debugging */
int vdesc_flags; /* VDESC_* flags */
/*
*/
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.
#define VDESC(OP) (& __CONCAT(OP,_desc))
#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
+struct ostat;
+#define BUILDPATH_NO_FS_ENTER 0x1 /* Use cache values, do not enter file system */
+#define BUILDPATH_CHECKACCESS 0x2 /* Check if parents have search rights */
+int build_path(vnode_t first_vp, char *buff, int buflen, int *outlen, int flags, vfs_context_t ctx);
-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);
+__private_extern__ int is_package_name(const char *name, int len);
+__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, struct ucred *cred, int *aresid,
+ 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_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);
+int vn_close(vnode_t, int 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)
+
+
#define VN_CREATE_NOAUTH (1<<0)
#define VN_CREATE_NOINHERIT (1<<1)
+#define VN_CREATE_UNION (1<<2)
+#define VN_CREATE_NOLABEL (1<<3)
errno_t vn_create(vnode_t, vnode_t *, struct componentname *, struct vnode_attr *, int flags, 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);
+int default_getxattr(vnode_t, const char *, uio_t, size_t *, int, vfs_context_t);
+int default_setxattr(vnode_t, const char *, uio_t, int, vfs_context_t);
+int default_removexattr(vnode_t, const char *, int, vfs_context_t);
+
+int check_appledouble_header(vnode_t, 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, vfs_context_t context);
+#endif
+
+
+void nchinit(void) __attribute__((section("__TEXT, initcode")));
+int resize_namecache(uint32_t 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);
-char * vnode_getname(vnode_t vp);
-void vnode_putname(char *name);
+int vn_pathconf(vnode_t, int, int32_t *, vfs_context_t);
-vnode_t vnode_getparent(vnode_t vp);
+#define vnode_lock_convert(v) lck_mtx_convert_spin(&(v)->v_lock)
+
+void vnode_lock_spin(vnode_t);
-int vn_pathconf(vnode_t, int, register_t *, vfs_context_t);
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);
+#ifdef BSD_KERNEL_PRIVATE
+int vnode_getalways(vnode_t);
+int vget_internal(vnode_t, 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_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);
+
+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 check_cdevmounted(dev_t, enum vtype, int *);
+void vnode_authorize_init(void) __attribute__((section("__TEXT, initcode")));
+
+void vfsinit(void) __attribute__((section("__TEXT, initcode")));
+void vnode_lock(vnode_t);
+void vnode_unlock(vnode_t);
-void vnode_authorize_init(void);
+/*
+ * XXX exported symbols; should be static
+ */
+void vfs_op_init(void) __attribute__((section("__TEXT, initcode")));
+void vfs_opv_init(void) __attribute__((section("__TEXT, initcode")));
+int vfs_sysctl(int *name, uint32_t namelen, user_addr_t oldp, size_t *oldlenp,
+ user_addr_t newp, size_t newlen, struct proc *p);
+int sysctl_vnode(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
+
+#ifdef BSD_KERNEL_PRIVATE
+void vnode_knoteupdate(struct knote *kn);
+void vnode_setneedinactive(vnode_t);
+int vnode_hasnamedstreams(vnode_t); /* Does this vnode have associated named streams? */
+#endif
#endif /* !_SYS_VNODE_INTERNAL_H_ */
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