/* * Copyright (c) 2000-2012 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 * 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_OSREFERENCE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ /* * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)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_ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct lockf; struct label; LIST_HEAD(buflists, buf); #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 */ #if CONFIG_IOCOUNT_TRACE #define IOCOUNT_TRACE_VGET 0 #define IOCOUNT_TRACE_VPUT 1 #define IOCOUNT_TRACE_MAX_TYPES 2 #define IOCOUNT_TRACE_MAX_IDX 16 #define IOCOUNT_TRACE_MAX_FRAMES 10 struct vnode_iocount_trace { int idx; int counts[IOCOUNT_TRACE_MAX_IDX]; void *stacks[IOCOUNT_TRACE_MAX_IDX][IOCOUNT_TRACE_MAX_FRAMES]; }; typedef struct vnode_iocount_trace *vnode_iocount_trace_t; #endif /* CONFIG_IOCOUNT_TRACE */ #if CONFIG_FILE_LEASES #define FL_FLAG_RELEASE_PENDING 0x00000001 #define FL_FLAG_DOWNGRADE_PENDING 0x00000002 struct file_lease { LIST_ENTRY(file_lease) fl_link; struct fileglob *fl_fg; /* The file that the lease is placed on */ pid_t fl_pid; /* The process's pid that owns the lease */ int fl_type; /* The file lease type: F_RDLCK, F_WRLCK */ uint32_t fl_flags; /* The file lease flags */ uint64_t fl_release_start; /* The lease release start time */ uint64_t fl_downgrade_start; /* The lease downgrade start time */ }; typedef struct file_lease *file_lease_t; #endif /* CONFIG_FILE_LEASES */ /* * Reading or writing any of these items requires holding the appropriate lock. * v_freelist is locked by the global vnode_list_lock * v_mntvnodes is locked by the mount_lock * v_nclinks and v_ncchildren are protected by the global name_cache_lock * v_cleanblkhd and v_dirtyblkhd and v_iterblkflags are locked via the global buf_mtx * 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 */ 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 * XNU_PTRAUTH_SIGNED_PTR("vnode.v_owner") 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 * XNU_PTRAUTH_SIGNED_PTR("vnode.v_data") vu_mountedhere; /* ptr to mounted vfs (VDIR) */ struct socket * XNU_PTRAUTH_SIGNED_PTR("vnode.vu_socket") vu_socket; /* unix ipc (VSOCK) */ struct specinfo * XNU_PTRAUTH_SIGNED_PTR("vnode.vu_specinfo") vu_specinfo; /* device (VCHR, VBLK) */ struct fifoinfo * XNU_PTRAUTH_SIGNED_PTR("vnode.vu_fifoinfo") vu_fifoinfo; /* fifo (VFIFO) */ struct ubc_info * XNU_PTRAUTH_SIGNED_PTR("vnode.vu_ubcinfo") vu_ubcinfo; /* valid for (VREG) */ } 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 * excluive mode */ kauth_cred_t XNU_PTRAUTH_SIGNED_PTR("vnode.v_cred") 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 */ uint32_t v_holdcount; /* reference to keep vnode from being freed after reclaim */ const char *v_name; /* name component of the vnode */ vnode_t XNU_PTRAUTH_SIGNED_PTR("vnode.v_parent") v_parent; /* pointer to parent vnode */ struct lockf *v_lockf; /* advisory lock list head */ int(**v_op)(void *); /* vnode operations vector */ mount_t XNU_PTRAUTH_SIGNED_PTR("vnode.v_mount") 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 */ #if CONFIG_IO_COMPRESSION_STATS io_compression_stats_t io_compression_stats; /* IO compression statistics */ #endif /* CONFIG_IO_COMPRESSION_STATS */ #if CONFIG_IOCOUNT_TRACE vnode_iocount_trace_t v_iocount_trace; #endif /* CONFIG_IOCOUNT_TRACE */ #if CONFIG_FILE_LEASES LIST_HEAD(fl_head, file_lease) v_leases; /* list of leases in place */ #endif /* CONFIG_FILE_LEASES */ }; #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 /* * 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 */ #define VLIST_NO_REUSE 0x08 /* vnode should not be reused, will be deallocated */ /* * v_lflags */ #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_OPSCHANGE 0x0040 /* device vnode is changing vnodeops */ #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 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 VCANDEALLOC 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 */ #define VMOUNTEDHERE 0x40000000 /* vnode is a mountpoint */ /* * 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. */ /* * Flags for vdesc_flags: */ #define VDESC_MAX_VPS 16 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */ #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 * and in places where no such field exists. */ #define VDESC_NO_OFFSET -1 /* * This structure describes the vnode operation taking place. */ struct vnodeop_desc { 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. * Creds and procs are not needed in bypass routines, but sometimes * 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 */ /* * 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; }; /* * A list of all the operation descs. */ extern struct vnodeop_desc *vnodeop_descs[]; /* * This macro is very helpful in defining those offsets in the vdesc struct. * * This is stolen from X11R4. I ingored all the fancy stuff for * 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) \ VOPARG_OFFSET(s_type*,field) #define VOPARG_OFFSETTO(S_TYPE, S_OFFSET, STRUCT_P) \ ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET))) /* * VOCALL calls an op given an ops vector. We break it out because BSD's * vclean changes the ops vector and then wants to call ops with the old * vector. */ #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 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 *, vnode_t authvp); 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); 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 */ void vnode_attr_handle_uid_and_gid(struct vnode_attr *vap, mount_t mp, vfs_context_t ctx); #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); boolean_t name_cache_lock_shared_to_exclusive(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 vnode_getalways_from_pager(vnode_t); int vget_internal(vnode_t, int, int); errno_t vnode_getiocount(vnode_t, unsigned int, int); vnode_t vnode_getparent_if_different(vnode_t, vnode_t); #endif /* BSD_KERNEL_PRIVATE */ int vnode_get_locked(vnode_t); int vnode_put_locked(vnode_t); #ifdef BSD_KERNEL_PRIVATE int vnode_put_from_pager(vnode_t); vnode_t vnode_drop_and_unlock(vnode_t); #endif /* BSD_KERNEL_PRIVATE */ 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); lck_mtx_t * SPECHASH_LOCK_ADDR(void); 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); 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? */ 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 *, size_t *, int, vfs_context_t); void nspace_resolver_init(void); void nspace_resolver_exited(struct proc *); int vnode_isinuse_locked(vnode_t, int, int ); kauth_cred_t vnode_cred(vnode_t); int fsgetpath_internal(vfs_context_t, int, uint64_t, vm_size_t, caddr_t, uint32_t options, int *); #endif /* BSD_KERNEL_PRIVATE */ #if CONFIG_IO_COMPRESSION_STATS /* * update the IO compression stats tracked at block granularity */ int vnode_updateiocompressionblockstats(vnode_t vp, uint32_t size_bucket); /* * update the IO compression stats tracked for the buffer */ int vnode_updateiocompressionbufferstats(vnode_t vp, uint64_t uncompressed_size, uint64_t compressed_size, uint32_t size_bucket, uint32_t compression_bucket); #endif /* CONFIG_IO_COMPRESSION_STATS */ extern bool rootvp_is_ssd; #if CONFIG_FILE_LEASES int vnode_setlease(vnode_t vp, struct fileglob *fg, int fl_type, int expcounts, vfs_context_t ctx); int vnode_getlease(vnode_t vp); int vnode_breaklease(vnode_t vp, uint32_t oflags, vfs_context_t ctx); void vnode_breakdirlease(vnode_t vp, bool need_parent, uint32_t oflags); void vnode_revokelease(vnode_t vp, bool locked); #endif /* CONFIG_FILE_LEASES */ #define VFS_SMR_DECLARE \ extern smr_t vfs_smr #define VFS_SMR() vfs_smr #define vfs_smr_enter() smr_enter(VFS_SMR()) #define vfs_smr_leave() smr_leave(VFS_SMR()) #define vfs_smr_synchronize() smr_synchronize(VFS_SMR()) bool vnode_hold_smr(vnode_t); #endif /* !_SYS_VNODE_INTERNAL_H_ */