/*
- * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#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>
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.
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 */
- 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_listflag; /* flags protected by the vnode_list_lock (see below) */
- 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 */
- u_short v_type; /* vnode type */
- u_short v_tag; /* type of underlying data */
- int 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 */
+ struct klist v_knotes; /* knotes attached to this vnode */
/*
* the following 4 fields are protected
* by the name_cache_lock held in
/*
* back to the vnode lock for protection
*/
- long v_numoutput; /* num of writes in progress */
- long v_writecount; /* reference count of writers */
+ 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 */
- struct unsafe_fsnode *v_unsafefs; /* pointer to struct used to lock */
-#endif /* vnodes on unsafe filesystems */
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 */
};
#define v_mountedhere v_un.vu_mountedhere
/*
* 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_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_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 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 */
+#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 */
+#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 */
#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 */
+#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 */
+/*
+ 0x20000000 not used
+ 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 ? */
+};
+
+/*
+ * 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 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 */
+#ifdef CONFIG_IMGSRC_ACCESS
+#define MAX_IMAGEBOOT_NESTING 2
+extern struct vnode *imgsrc_rootvnodes[];
+#endif /* CONFIG_IMGSRC_ACCESS */
+
/*
* Mods for exensibility.
*/
#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
struct ostat;
-#define BUILDPATH_NO_FS_ENTER 0x1 /* Use cache values, do not enter file system */
-int build_path(vnode_t first_vp, char *buff, int buflen, int *outlen, int flags, vfs_context_t ctx);
-
-int bdevvp(dev_t dev, struct vnode **vpp);
+/* 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 is_package_name(const 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,
- kauth_cred_t cred, int *aresid, struct proc *p);
+__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, 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, 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_unlink(vnode_t dvp, vnode_t vp, struct componentname *cnp, vfs_context_t ctx, void *reserved);
+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_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)
-errno_t vn_create(vnode_t, vnode_t *, struct componentname *, struct vnode_attr *, int flags, vfs_context_t);
-
+#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);
-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);
-
#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);
+errno_t vnode_relenamedstream(vnode_t vp, vnode_t svp);
+errno_t vnode_verifynamedstream (vnode_t vp);
#endif
-int vn_path_package_check(vnode_t vp, char *path, int pathlen, int *component);
-void nchinit(void) __attribute__((section("__TEXT, initcode")));
-int resize_namecache(u_int newsize);
+void nchinit(void);
+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);
-const char *vnode_getname(vnode_t vp);
-void vnode_putname(const char *name);
-
-vnode_t vnode_getparent(vnode_t vp);
-
-int vn_pathconf(vnode_t, int, register_t *, vfs_context_t);
+extern int nc_disabled;
#define vnode_lock_convert(v) lck_mtx_convert_spin(&(v)->v_lock)
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);
+
+#define VNODE_REF_FORCE 0x1
+int vnode_ref_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);
+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_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 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 vnode_authorize_init(void);
void vfsinit(void);
+void vnode_lock(vnode_t);
+void vnode_unlock(vnode_t);
+
+void vn_print_state(vnode_t /* vp */, const char * /* fmt */, ...)
+ __printflike(2,3);
+
+#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 */
/*
* 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, u_int 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);
+void vfs_op_init(void);
+void vfs_opv_init(void);
+
+#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 nspace_proc_exit(struct proc *p);
+
+errno_t
+vnode_readdir64(struct vnode *vp, struct uio *uio, int flags, int *eofflag,
+ int *numdirent, vfs_context_t ctxp);
+
+void vnode_setswapmount(vnode_t);
+int64_t vnode_getswappin_avail(vnode_t);
+
+int vnode_get_snapdir(vnode_t , vnode_t *, vfs_context_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 */
+
+int build_path_with_parent(vnode_t, vnode_t /* parent */, char *, int, int *, int, vfs_context_t);
+
+#endif /* BSD_KERNEL_PRIVATE */
#endif /* !_SYS_VNODE_INTERNAL_H_ */
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