| 1 | /* $NetBSD: mount.h,v 1.219 2016/07/07 06:55:44 msaitoh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1989, 1991, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. Neither the name of the University nor the names of its contributors |
| 16 | * may be used to endorse or promote products derived from this software |
| 17 | * without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | * |
| 31 | * @(#)mount.h 8.21 (Berkeley) 5/20/95 |
| 32 | */ |
| 33 | |
| 34 | #ifndef _SYS_MOUNT_H_ |
| 35 | #define _SYS_MOUNT_H_ |
| 36 | |
| 37 | #ifndef _KERNEL |
| 38 | #include <sys/featuretest.h> |
| 39 | #if defined(_NETBSD_SOURCE) |
| 40 | #include <sys/stat.h> |
| 41 | #endif /* _NETBSD_SOURCE */ |
| 42 | #endif |
| 43 | |
| 44 | #ifndef _STANDALONE |
| 45 | #include <sys/param.h> /* precautionary upon removal from ucred.h */ |
| 46 | #include <sys/time.h> |
| 47 | #include <sys/uio.h> |
| 48 | #include <sys/ucred.h> |
| 49 | #include <sys/fstypes.h> |
| 50 | #include <sys/queue.h> |
| 51 | #include <sys/rwlock.h> |
| 52 | #include <sys/statvfs.h> |
| 53 | #include <sys/specificdata.h> |
| 54 | #include <sys/condvar.h> |
| 55 | #endif /* !_STANDALONE */ |
| 56 | |
| 57 | /* |
| 58 | * file system statistics |
| 59 | */ |
| 60 | |
| 61 | #define MNAMELEN 90 /* length of buffer for returned name */ |
| 62 | |
| 63 | /* |
| 64 | * File system types. |
| 65 | */ |
| 66 | #define MOUNT_FFS "ffs" /* UNIX "Fast" Filesystem */ |
| 67 | #define MOUNT_UFS MOUNT_FFS /* for compatibility */ |
| 68 | #define MOUNT_NFS "nfs" /* Network Filesystem */ |
| 69 | #define MOUNT_MFS "mfs" /* Memory Filesystem */ |
| 70 | #define MOUNT_MSDOS "msdos" /* MSDOS Filesystem */ |
| 71 | #define MOUNT_LFS "lfs" /* Log-based Filesystem */ |
| 72 | #define MOUNT_FDESC "fdesc" /* File Descriptor Filesystem */ |
| 73 | #define MOUNT_NULL "null" /* Minimal Filesystem Layer */ |
| 74 | #define MOUNT_OVERLAY "overlay" /* Minimal Overlay Filesystem Layer */ |
| 75 | #define MOUNT_UMAP "umap" /* User/Group Identifier Remapping Filesystem */ |
| 76 | #define MOUNT_KERNFS "kernfs" /* Kernel Information Filesystem */ |
| 77 | #define MOUNT_PROCFS "procfs" /* /proc Filesystem */ |
| 78 | #define MOUNT_AFS "afs" /* Andrew Filesystem */ |
| 79 | #define MOUNT_CD9660 "cd9660" /* ISO9660 (aka CDROM) Filesystem */ |
| 80 | #define MOUNT_UNION "union" /* Union (translucent) Filesystem */ |
| 81 | #define MOUNT_ADOSFS "adosfs" /* AmigaDOS Filesystem */ |
| 82 | #define MOUNT_EXT2FS "ext2fs" /* Second Extended Filesystem */ |
| 83 | #define MOUNT_CFS "coda" /* Coda Filesystem */ |
| 84 | #define MOUNT_CODA MOUNT_CFS /* Coda Filesystem */ |
| 85 | #define MOUNT_FILECORE "filecore" /* Acorn Filecore Filesystem */ |
| 86 | #define MOUNT_NTFS "ntfs" /* Windows/NT Filesystem */ |
| 87 | #define MOUNT_SMBFS "smbfs" /* CIFS (SMB) */ |
| 88 | #define MOUNT_PTYFS "ptyfs" /* Pseudo tty filesystem */ |
| 89 | #define MOUNT_TMPFS "tmpfs" /* Efficient memory file-system */ |
| 90 | #define MOUNT_UDF "udf" /* UDF CD/DVD filesystem */ |
| 91 | #define MOUNT_SYSVBFS "sysvbfs" /* System V Boot Filesystem */ |
| 92 | #define MOUNT_PUFFS "puffs" /* Pass-to-Userspace filesystem */ |
| 93 | #define MOUNT_HFS "hfs" /* Apple HFS+ Filesystem */ |
| 94 | #define MOUNT_EFS "efs" /* SGI's Extent Filesystem */ |
| 95 | #define MOUNT_ZFS "zfs" /* Sun ZFS */ |
| 96 | #define MOUNT_NILFS "nilfs" /* NTT's NiLFS(2) logging file system */ |
| 97 | #define MOUNT_RUMPFS "rumpfs" /* rump virtual file system */ |
| 98 | #define MOUNT_V7FS "v7fs" /* 7th Edition of Unix Filesystem */ |
| 99 | |
| 100 | #ifndef _STANDALONE |
| 101 | |
| 102 | struct vnode; |
| 103 | struct vattr; |
| 104 | |
| 105 | /* |
| 106 | * Structure per mounted file system. Each mounted file system has an |
| 107 | * array of operations and an instance record. The file systems are |
| 108 | * put on a doubly linked list. |
| 109 | */ |
| 110 | struct mount { |
| 111 | TAILQ_ENTRY(mount) mnt_list; /* mount list */ |
| 112 | TAILQ_HEAD(, vnode) mnt_vnodelist; /* list of vnodes this mount */ |
| 113 | struct vfsops *mnt_op; /* operations on fs */ |
| 114 | struct vnode *mnt_vnodecovered; /* vnode we mounted on */ |
| 115 | int mnt_synclist_slot; /* synclist slot index */ |
| 116 | void *mnt_transinfo; /* for FS-internal use */ |
| 117 | void *mnt_data; /* private data */ |
| 118 | kmutex_t mnt_unmounting; /* to prevent new activity */ |
| 119 | kmutex_t mnt_renamelock; /* per-fs rename lock */ |
| 120 | int mnt_refcnt; /* ref count on this structure */ |
| 121 | unsigned int mnt_busynest; /* vfs_busy nestings */ |
| 122 | int mnt_flag; /* flags */ |
| 123 | int mnt_iflag; /* internal flags */ |
| 124 | int mnt_fs_bshift; /* offset shift for lblkno */ |
| 125 | int mnt_dev_bshift; /* shift for device sectors */ |
| 126 | struct statvfs mnt_stat; /* cache of filesystem stats */ |
| 127 | specificdata_reference |
| 128 | mnt_specdataref; /* subsystem specific data */ |
| 129 | kmutex_t mnt_updating; /* to serialize updates */ |
| 130 | struct wapbl_ops |
| 131 | *mnt_wapbl_op; /* logging ops */ |
| 132 | struct wapbl *mnt_wapbl; /* log info */ |
| 133 | struct wapbl_replay |
| 134 | *mnt_wapbl_replay; /* replay support XXX: what? */ |
| 135 | uint64_t mnt_gen; |
| 136 | }; |
| 137 | |
| 138 | /* |
| 139 | * Sysctl CTL_VFS definitions. |
| 140 | * |
| 141 | * Second level identifier specifies which filesystem. Second level |
| 142 | * identifier VFS_GENERIC returns information about all filesystems. |
| 143 | * |
| 144 | * Note the slightly non-flat nature of these sysctl numbers. Oh for |
| 145 | * a better sysctl interface. |
| 146 | */ |
| 147 | #define VFS_GENERIC 0 /* generic filesystem information */ |
| 148 | #define VFS_MAXTYPENUM 1 /* int: highest defined fs type */ |
| 149 | #define VFS_CONF 2 /* struct: vfsconf for filesystem given |
| 150 | as next argument */ |
| 151 | #define VFS_USERMOUNT 3 /* enable/disable fs mnt by non-root */ |
| 152 | #define VFS_MAGICLINKS 4 /* expand 'magic' symlinks */ |
| 153 | #define VFSGEN_MAXID 5 /* number of valid vfs.generic ids */ |
| 154 | |
| 155 | /* |
| 156 | * USE THE SAME NAMES AS MOUNT_*! |
| 157 | * |
| 158 | * Only need to add new entry here if the filesystem actually supports |
| 159 | * sysctl(2). |
| 160 | */ |
| 161 | #define CTL_VFS_NAMES { \ |
| 162 | { "generic", CTLTYPE_NODE }, \ |
| 163 | { MOUNT_FFS, CTLTYPE_NODE }, \ |
| 164 | { MOUNT_NFS, CTLTYPE_NODE }, \ |
| 165 | { MOUNT_MFS, CTLTYPE_NODE }, \ |
| 166 | { MOUNT_MSDOS, CTLTYPE_NODE }, \ |
| 167 | { MOUNT_LFS, CTLTYPE_NODE }, \ |
| 168 | { 0, 0 }, /* MOUNT_LOFS */ \ |
| 169 | { MOUNT_FDESC, CTLTYPE_NODE }, \ |
| 170 | { MOUNT_NULL, CTLTYPE_NODE }, \ |
| 171 | { MOUNT_UMAP, CTLTYPE_NODE }, \ |
| 172 | { MOUNT_KERNFS, CTLTYPE_NODE }, \ |
| 173 | { MOUNT_PROCFS, CTLTYPE_NODE }, \ |
| 174 | { MOUNT_AFS, CTLTYPE_NODE }, \ |
| 175 | { MOUNT_CD9660, CTLTYPE_NODE }, \ |
| 176 | { MOUNT_UNION, CTLTYPE_NODE }, \ |
| 177 | { MOUNT_ADOSFS, CTLTYPE_NODE }, \ |
| 178 | { MOUNT_EXT2FS, CTLTYPE_NODE }, \ |
| 179 | { MOUNT_CODA, CTLTYPE_NODE }, \ |
| 180 | { MOUNT_FILECORE, CTLTYPE_NODE }, \ |
| 181 | { MOUNT_NTFS, CTLTYPE_NODE }, \ |
| 182 | } |
| 183 | |
| 184 | #define VFS_MAXID 20 /* number of valid vfs ids */ |
| 185 | |
| 186 | #define CTL_VFSGENCTL_NAMES { \ |
| 187 | { 0, 0 }, \ |
| 188 | { "maxtypenum", CTLTYPE_INT }, \ |
| 189 | { "conf", CTLTYPE_NODE }, /* Special */ \ |
| 190 | { "usermount", CTLTYPE_INT }, \ |
| 191 | { "magiclinks", CTLTYPE_INT }, \ |
| 192 | } |
| 193 | |
| 194 | #if defined(_KERNEL) |
| 195 | |
| 196 | struct quotactl_args; /* in sys/quotactl.h */ |
| 197 | struct quotastat; /* in sys/quotactl.h */ |
| 198 | struct quotaidtypestat; /* in sys/quotactl.h */ |
| 199 | struct quotaobjtypestat; /* in sys/quotactl.h */ |
| 200 | struct quotakcursor; /* in sys/quotactl.h */ |
| 201 | struct quotakey; /* in sys/quota.h */ |
| 202 | struct quotaval; /* in sys/quota.h */ |
| 203 | |
| 204 | #if __STDC__ |
| 205 | struct nameidata; |
| 206 | #endif |
| 207 | |
| 208 | /* |
| 209 | * Operations supported on mounted file system. |
| 210 | */ |
| 211 | |
| 212 | struct vfsops { |
| 213 | const char *vfs_name; |
| 214 | size_t vfs_min_mount_data; |
| 215 | int (*vfs_mount) (struct mount *, const char *, void *, |
| 216 | size_t *); |
| 217 | int (*vfs_start) (struct mount *, int); |
| 218 | int (*vfs_unmount) (struct mount *, int); |
| 219 | int (*vfs_root) (struct mount *, struct vnode **); |
| 220 | int (*vfs_quotactl) (struct mount *, struct quotactl_args *); |
| 221 | int (*vfs_statvfs) (struct mount *, struct statvfs *); |
| 222 | int (*vfs_sync) (struct mount *, int, struct kauth_cred *); |
| 223 | int (*vfs_vget) (struct mount *, ino_t, struct vnode **); |
| 224 | int (*vfs_loadvnode) (struct mount *, struct vnode *, |
| 225 | const void *, size_t, const void **); |
| 226 | int (*vfs_newvnode) (struct mount *, struct vnode *, struct vnode *, |
| 227 | struct vattr *, kauth_cred_t, |
| 228 | size_t *, const void **); |
| 229 | int (*vfs_fhtovp) (struct mount *, struct fid *, |
| 230 | struct vnode **); |
| 231 | int (*vfs_vptofh) (struct vnode *, struct fid *, size_t *); |
| 232 | void (*vfs_init) (void); |
| 233 | void (*vfs_reinit) (void); |
| 234 | void (*vfs_done) (void); |
| 235 | int (*vfs_mountroot)(void); |
| 236 | int (*vfs_snapshot) (struct mount *, struct vnode *, |
| 237 | struct timespec *); |
| 238 | int (*vfs_extattrctl) (struct mount *, int, |
| 239 | struct vnode *, int, const char *); |
| 240 | int (*vfs_suspendctl) (struct mount *, int); |
| 241 | int (*vfs_renamelock_enter)(struct mount *); |
| 242 | void (*vfs_renamelock_exit)(struct mount *); |
| 243 | int (*vfs_fsync) (struct vnode *, int); |
| 244 | const struct vnodeopv_desc * const *vfs_opv_descs; |
| 245 | int vfs_refcount; |
| 246 | LIST_ENTRY(vfsops) vfs_list; |
| 247 | }; |
| 248 | |
| 249 | /* XXX vget is actually file system internal. */ |
| 250 | #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) |
| 251 | #define VFS_LOADVNODE(MP, VP, KEY, KEY_LEN, NEW_KEY) \ |
| 252 | (*(MP)->mnt_op->vfs_loadvnode)(MP, VP, KEY, KEY_LEN, NEW_KEY) |
| 253 | #define VFS_NEWVNODE(MP, DVP, VP, VAP, CRED, NEW_LEN, NEW_KEY) \ |
| 254 | (*(MP)->mnt_op->vfs_newvnode)(MP, DVP, VP, VAP, CRED, NEW_LEN, NEW_KEY) |
| 255 | |
| 256 | #define VFS_RENAMELOCK_ENTER(MP) (*(MP)->mnt_op->vfs_renamelock_enter)(MP) |
| 257 | #define VFS_RENAMELOCK_EXIT(MP) (*(MP)->mnt_op->vfs_renamelock_exit)(MP) |
| 258 | #define VFS_FSYNC(MP, VP, FLG) (*(MP)->mnt_op->vfs_fsync)(VP, FLG) |
| 259 | |
| 260 | int VFS_MOUNT(struct mount *, const char *, void *, size_t *); |
| 261 | int VFS_START(struct mount *, int); |
| 262 | int VFS_UNMOUNT(struct mount *, int); |
| 263 | int VFS_ROOT(struct mount *, struct vnode **); |
| 264 | int VFS_QUOTACTL(struct mount *, struct quotactl_args *); |
| 265 | int VFS_STATVFS(struct mount *, struct statvfs *); |
| 266 | int VFS_SYNC(struct mount *, int, struct kauth_cred *); |
| 267 | int VFS_FHTOVP(struct mount *, struct fid *, struct vnode **); |
| 268 | int VFS_VPTOFH(struct vnode *, struct fid *, size_t *); |
| 269 | int VFS_SNAPSHOT(struct mount *, struct vnode *, struct timespec *); |
| 270 | int VFS_EXTATTRCTL(struct mount *, int, struct vnode *, int, const char *); |
| 271 | int VFS_SUSPENDCTL(struct mount *, int); |
| 272 | |
| 273 | #endif /* _KERNEL */ |
| 274 | |
| 275 | #ifdef _KERNEL |
| 276 | #if __STDC__ |
| 277 | struct mbuf; |
| 278 | struct vnodeopv_desc; |
| 279 | struct kauth_cred; |
| 280 | #endif |
| 281 | |
| 282 | #define VFS_MAX_MOUNT_DATA 8192 |
| 283 | |
| 284 | #define VFS_PROTOS(fsname) \ |
| 285 | int fsname##_mount(struct mount *, const char *, void *, \ |
| 286 | size_t *); \ |
| 287 | int fsname##_start(struct mount *, int); \ |
| 288 | int fsname##_unmount(struct mount *, int); \ |
| 289 | int fsname##_root(struct mount *, struct vnode **); \ |
| 290 | int fsname##_quotactl(struct mount *, struct quotactl_args *); \ |
| 291 | int fsname##_statvfs(struct mount *, struct statvfs *); \ |
| 292 | int fsname##_sync(struct mount *, int, struct kauth_cred *); \ |
| 293 | int fsname##_vget(struct mount *, ino_t, struct vnode **); \ |
| 294 | int fsname##_loadvnode(struct mount *, struct vnode *, \ |
| 295 | const void *, size_t, const void **); \ |
| 296 | int fsname##_newvnode(struct mount *, struct vnode *, \ |
| 297 | struct vnode *, struct vattr *, kauth_cred_t, \ |
| 298 | size_t *, const void **); \ |
| 299 | int fsname##_fhtovp(struct mount *, struct fid *, struct vnode **); \ |
| 300 | int fsname##_vptofh(struct vnode *, struct fid *, size_t *); \ |
| 301 | void fsname##_init(void); \ |
| 302 | void fsname##_reinit(void); \ |
| 303 | void fsname##_done(void); \ |
| 304 | int fsname##_mountroot(void); \ |
| 305 | int fsname##_snapshot(struct mount *, struct vnode *, \ |
| 306 | struct timespec *); \ |
| 307 | int fsname##_extattrctl(struct mount *, int, struct vnode *, int, \ |
| 308 | const char *); \ |
| 309 | int fsname##_suspendctl(struct mount *, int) |
| 310 | |
| 311 | /* |
| 312 | * This operations vector is so wapbl can be wrapped into a filesystem lkm. |
| 313 | * XXX Eventually, we want to move this functionality |
| 314 | * down into the filesystems themselves so that this isn't needed. |
| 315 | */ |
| 316 | struct wapbl_ops { |
| 317 | void (*wo_wapbl_discard)(struct wapbl *); |
| 318 | int (*wo_wapbl_replay_isopen)(struct wapbl_replay *); |
| 319 | int (*wo_wapbl_replay_can_read)(struct wapbl_replay *, daddr_t, long); |
| 320 | int (*wo_wapbl_replay_read)(struct wapbl_replay *, void *, daddr_t, long); |
| 321 | void (*wo_wapbl_add_buf)(struct wapbl *, struct buf *); |
| 322 | void (*wo_wapbl_remove_buf)(struct wapbl *, struct buf *); |
| 323 | void (*wo_wapbl_resize_buf)(struct wapbl *, struct buf *, long, long); |
| 324 | int (*wo_wapbl_begin)(struct wapbl *, const char *, int); |
| 325 | void (*wo_wapbl_end)(struct wapbl *); |
| 326 | void (*wo_wapbl_junlock_assert)(struct wapbl *); |
| 327 | void (*wo_wapbl_biodone)(struct buf *); |
| 328 | }; |
| 329 | #define WAPBL_DISCARD(MP) \ |
| 330 | (*(MP)->mnt_wapbl_op->wo_wapbl_discard)((MP)->mnt_wapbl) |
| 331 | #define WAPBL_REPLAY_ISOPEN(MP) \ |
| 332 | (*(MP)->mnt_wapbl_op->wo_wapbl_replay_isopen)((MP)->mnt_wapbl_replay) |
| 333 | #define WAPBL_REPLAY_CAN_READ(MP, BLK, LEN) \ |
| 334 | (*(MP)->mnt_wapbl_op->wo_wapbl_replay_can_read)((MP)->mnt_wapbl_replay, \ |
| 335 | (BLK), (LEN)) |
| 336 | #define WAPBL_REPLAY_READ(MP, DATA, BLK, LEN) \ |
| 337 | (*(MP)->mnt_wapbl_op->wo_wapbl_replay_read)((MP)->mnt_wapbl_replay, \ |
| 338 | (DATA), (BLK), (LEN)) |
| 339 | #define WAPBL_ADD_BUF(MP, BP) \ |
| 340 | (*(MP)->mnt_wapbl_op->wo_wapbl_add_buf)((MP)->mnt_wapbl, (BP)) |
| 341 | #define WAPBL_REMOVE_BUF(MP, BP) \ |
| 342 | (*(MP)->mnt_wapbl_op->wo_wapbl_remove_buf)((MP)->mnt_wapbl, (BP)) |
| 343 | #define WAPBL_RESIZE_BUF(MP, BP, OLDSZ, OLDCNT) \ |
| 344 | (*(MP)->mnt_wapbl_op->wo_wapbl_resize_buf)((MP)->mnt_wapbl, (BP), \ |
| 345 | (OLDSZ), (OLDCNT)) |
| 346 | #define WAPBL_BEGIN(MP) \ |
| 347 | (*(MP)->mnt_wapbl_op->wo_wapbl_begin)((MP)->mnt_wapbl, \ |
| 348 | __FILE__, __LINE__) |
| 349 | #define WAPBL_END(MP) \ |
| 350 | (*(MP)->mnt_wapbl_op->wo_wapbl_end)((MP)->mnt_wapbl) |
| 351 | #define WAPBL_JUNLOCK_ASSERT(MP) \ |
| 352 | (*(MP)->mnt_wapbl_op->wo_wapbl_junlock_assert)((MP)->mnt_wapbl) |
| 353 | |
| 354 | struct vfs_hooks { |
| 355 | LIST_ENTRY(vfs_hooks) vfs_hooks_list; |
| 356 | void (*vh_unmount)(struct mount *); |
| 357 | int (*vh_reexport)(struct mount *, const char *, void *); |
| 358 | void (*vh_future_expansion_1)(void); |
| 359 | void (*vh_future_expansion_2)(void); |
| 360 | void (*vh_future_expansion_3)(void); |
| 361 | void (*vh_future_expansion_4)(void); |
| 362 | void (*vh_future_expansion_5)(void); |
| 363 | }; |
| 364 | |
| 365 | void vfs_hooks_init(void); |
| 366 | int vfs_hooks_attach(struct vfs_hooks *); |
| 367 | int vfs_hooks_detach(struct vfs_hooks *); |
| 368 | void vfs_hooks_unmount(struct mount *); |
| 369 | int vfs_hooks_reexport(struct mount *, const char *, void *); |
| 370 | |
| 371 | #endif /* _KERNEL */ |
| 372 | |
| 373 | /* |
| 374 | * Export arguments for local filesystem mount calls. |
| 375 | * |
| 376 | * This structure is deprecated and is only provided for compatibility |
| 377 | * reasons with old binary utilities; several file systems expose an |
| 378 | * instance of this structure in their mount arguments structure, thus |
| 379 | * needing a padding in place of the old values. This definition cannot |
| 380 | * change in the future due to this reason. |
| 381 | * XXX: This should be moved to the compat subtree but cannot be done |
| 382 | * until we can move the mount args structures themselves. |
| 383 | * |
| 384 | * The current export_args structure can be found in nfs/nfs.h. |
| 385 | */ |
| 386 | struct export_args30 { |
| 387 | int ex_flags; /* export related flags */ |
| 388 | uid_t ex_root; /* mapping for root uid */ |
| 389 | struct uucred ex_anon; /* mapping for anonymous user */ |
| 390 | struct sockaddr *ex_addr; /* net address to which exported */ |
| 391 | int ex_addrlen; /* and the net address length */ |
| 392 | struct sockaddr *ex_mask; /* mask of valid bits in saddr */ |
| 393 | int ex_masklen; /* and the smask length */ |
| 394 | char *ex_indexfile; /* index file for WebNFS URLs */ |
| 395 | }; |
| 396 | |
| 397 | struct mnt_export_args30 { |
| 398 | const char *fspec; /* Always NULL */ |
| 399 | struct export_args30 eargs; |
| 400 | }; |
| 401 | |
| 402 | #ifdef _KERNEL |
| 403 | |
| 404 | /* |
| 405 | * exported VFS interface (see vfssubr(9)) |
| 406 | */ |
| 407 | struct mount *vfs_getvfs(fsid_t *); /* return vfs given fsid */ |
| 408 | int vfs_composefh(struct vnode *, fhandle_t *, size_t *); |
| 409 | int vfs_composefh_alloc(struct vnode *, fhandle_t **); |
| 410 | void vfs_composefh_free(fhandle_t *); |
| 411 | int vfs_fhtovp(fhandle_t *, struct vnode **); |
| 412 | int vfs_mountedon(struct vnode *);/* is a vfs mounted on vp */ |
| 413 | int vfs_mountroot(void); |
| 414 | void vfs_shutdown(void); /* unmount and sync file systems */ |
| 415 | void vfs_sync_all(struct lwp *); |
| 416 | bool vfs_unmountall(struct lwp *); /* unmount file systems */ |
| 417 | bool vfs_unmountall1(struct lwp *, bool, bool); |
| 418 | bool vfs_unmount_forceone(struct lwp *); |
| 419 | int vfs_busy(struct mount *, struct mount **); |
| 420 | int vfs_rootmountalloc(const char *, const char *, struct mount **); |
| 421 | void vfs_unbusy(struct mount *, bool, struct mount **); |
| 422 | int vfs_attach(struct vfsops *); |
| 423 | int vfs_detach(struct vfsops *); |
| 424 | void vfs_reinit(void); |
| 425 | struct vfsops *vfs_getopsbyname(const char *); |
| 426 | void vfs_delref(struct vfsops *); |
| 427 | void vfs_destroy(struct mount *); |
| 428 | struct mount *vfs_mountalloc(struct vfsops *, struct vnode *); |
| 429 | int vfs_stdextattrctl(struct mount *, int, struct vnode *, |
| 430 | int, const char *); |
| 431 | void vfs_insmntque(struct vnode *, struct mount *); |
| 432 | int vfs_quotactl_stat(struct mount *, struct quotastat *); |
| 433 | int vfs_quotactl_idtypestat(struct mount *, int, struct quotaidtypestat *); |
| 434 | int vfs_quotactl_objtypestat(struct mount *,int,struct quotaobjtypestat *); |
| 435 | int vfs_quotactl_get(struct mount *, const struct quotakey *, |
| 436 | struct quotaval *); |
| 437 | int vfs_quotactl_put(struct mount *, const struct quotakey *, |
| 438 | const struct quotaval *); |
| 439 | int vfs_quotactl_del(struct mount *, const struct quotakey *); |
| 440 | int vfs_quotactl_cursoropen(struct mount *, struct quotakcursor *); |
| 441 | int vfs_quotactl_cursorclose(struct mount *, struct quotakcursor *); |
| 442 | int vfs_quotactl_cursorskipidtype(struct mount *, struct quotakcursor *, |
| 443 | int); |
| 444 | int vfs_quotactl_cursorget(struct mount *, struct quotakcursor *, |
| 445 | struct quotakey *, struct quotaval *, unsigned, unsigned *); |
| 446 | int vfs_quotactl_cursoratend(struct mount *, struct quotakcursor *, int *); |
| 447 | int vfs_quotactl_cursorrewind(struct mount *, struct quotakcursor *); |
| 448 | int vfs_quotactl_quotaon(struct mount *, int, const char *); |
| 449 | int vfs_quotactl_quotaoff(struct mount *, int); |
| 450 | |
| 451 | struct vnode_iterator; /* Opaque. */ |
| 452 | void vfs_vnode_iterator_init(struct mount *, struct vnode_iterator **); |
| 453 | void vfs_vnode_iterator_destroy(struct vnode_iterator *); |
| 454 | struct vnode *vfs_vnode_iterator_next(struct vnode_iterator *, |
| 455 | bool (*)(void *, struct vnode *), void *); |
| 456 | |
| 457 | /* Syncer */ |
| 458 | extern int syncer_maxdelay; |
| 459 | extern kmutex_t syncer_mutex; |
| 460 | extern time_t syncdelay; |
| 461 | extern time_t filedelay; |
| 462 | extern time_t dirdelay; |
| 463 | extern time_t metadelay; |
| 464 | void vfs_syncer_add_to_worklist(struct mount *); |
| 465 | void vfs_syncer_remove_from_worklist(struct mount *); |
| 466 | |
| 467 | extern TAILQ_HEAD(mntlist, mount) mountlist; /* mounted filesystem list */ |
| 468 | extern struct vfsops *vfssw[]; /* filesystem type table */ |
| 469 | extern int nvfssw; |
| 470 | extern kmutex_t mountlist_lock; |
| 471 | extern kmutex_t vfs_list_lock; |
| 472 | |
| 473 | void vfs_mount_sysinit(void); |
| 474 | long makefstype(const char *); |
| 475 | int mount_domount(struct lwp *, struct vnode **, struct vfsops *, |
| 476 | const char *, int, void *, size_t *); |
| 477 | int dounmount(struct mount *, int, struct lwp *); |
| 478 | int do_sys_mount(struct lwp *, const char *, enum uio_seg, const char *, |
| 479 | int, void *, enum uio_seg, size_t, register_t *); |
| 480 | void vfsinit(void); |
| 481 | void vfs_opv_init(const struct vnodeopv_desc * const *); |
| 482 | void vfs_opv_free(const struct vnodeopv_desc * const *); |
| 483 | #ifdef DEBUG |
| 484 | void vfs_bufstats(void); |
| 485 | #endif |
| 486 | |
| 487 | int mount_specific_key_create(specificdata_key_t *, specificdata_dtor_t); |
| 488 | void mount_specific_key_delete(specificdata_key_t); |
| 489 | void mount_initspecific(struct mount *); |
| 490 | void mount_finispecific(struct mount *); |
| 491 | void * mount_getspecific(struct mount *, specificdata_key_t); |
| 492 | void mount_setspecific(struct mount *, specificdata_key_t, void *); |
| 493 | |
| 494 | int usermount_common_policy(struct mount *, u_long); |
| 495 | void mountlist_append(struct mount *); |
| 496 | |
| 497 | LIST_HEAD(vfs_list_head, vfsops); |
| 498 | extern struct vfs_list_head vfs_list; |
| 499 | |
| 500 | #else /* _KERNEL */ |
| 501 | |
| 502 | #include <sys/cdefs.h> |
| 503 | |
| 504 | __BEGIN_DECLS |
| 505 | #if !defined(__LIBC12_SOURCE__) && !defined(_STANDALONE) |
| 506 | int getfh(const char *, void *, size_t *) |
| 507 | __RENAME(__getfh30); |
| 508 | #endif |
| 509 | |
| 510 | int unmount(const char *, int); |
| 511 | #if defined(_NETBSD_SOURCE) |
| 512 | #ifndef __LIBC12_SOURCE__ |
| 513 | int mount(const char *, const char *, int, void *, size_t) __RENAME(__mount50); |
| 514 | int fhopen(const void *, size_t, int) __RENAME(__fhopen40); |
| 515 | int fhstat(const void *, size_t, struct stat *) __RENAME(__fhstat50); |
| 516 | #endif |
| 517 | #endif /* _NETBSD_SOURCE */ |
| 518 | __END_DECLS |
| 519 | |
| 520 | #endif /* _KERNEL */ |
| 521 | #endif /* !_STANDALONE */ |
| 522 | |
| 523 | #endif /* !_SYS_MOUNT_H_ */ |
| 524 | |