X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..4ba76501152d51ccb5647018f3192c6096367d48:/bsd/sys/vnode_internal.h diff --git a/bsd/sys/vnode_internal.h b/bsd/sys/vnode_internal.h index f2dd79ba2..4e271502f 100644 --- a/bsd/sys/vnode_internal.h +++ b/bsd/sys/vnode_internal.h @@ -1,8 +1,8 @@ /* - * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. + * 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 @@ -11,10 +11,10 @@ * 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, @@ -22,7 +22,7 @@ * 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 */ @@ -60,12 +60,16 @@ * * @(#)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 #include #include @@ -81,18 +85,36 @@ #include #include #include +#include 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. @@ -103,114 +125,191 @@ struct unsafe_fsnode { * 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 */ /* @@ -220,14 +319,16 @@ extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ /* * 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 @@ -239,9 +340,9 @@ extern struct vnode *rootvnode; /* root (i.e. "/") vnode */ * 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. @@ -249,18 +350,18 @@ struct vnodeop_desc { * 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; }; /* @@ -268,10 +369,6 @@ struct vnodeop_desc { */ 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. @@ -280,11 +377,11 @@ extern void * mntvnode_slock; * 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))) @@ -294,83 +391,227 @@ extern void * mntvnode_slock; * 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_ */