xfs_vnode.h 21 KB

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  1. /*
  2. * Copyright (c) 2000-2005 Silicon Graphics, Inc.
  3. * All Rights Reserved.
  4. *
  5. * This program is free software; you can redistribute it and/or
  6. * modify it under the terms of the GNU General Public License as
  7. * published by the Free Software Foundation.
  8. *
  9. * This program is distributed in the hope that it would be useful,
  10. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12. * GNU General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU General Public License
  15. * along with this program; if not, write the Free Software Foundation,
  16. * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  17. */
  18. #ifndef __XFS_VNODE_H__
  19. #define __XFS_VNODE_H__
  20. struct uio;
  21. struct file;
  22. struct bhv_vfs;
  23. struct bhv_vattr;
  24. struct xfs_iomap;
  25. struct attrlist_cursor_kern;
  26. typedef struct dentry bhv_vname_t;
  27. typedef __u64 bhv_vnumber_t;
  28. typedef enum bhv_vflags {
  29. VMODIFIED = 0x08, /* XFS inode state possibly differs */
  30. /* to the Linux inode state. */
  31. VTRUNCATED = 0x40, /* truncated down so flush-on-close */
  32. } bhv_vflags_t;
  33. /*
  34. * MP locking protocols:
  35. * v_flag, v_vfsp VN_LOCK/VN_UNLOCK
  36. */
  37. typedef struct bhv_vnode {
  38. bhv_vflags_t v_flag; /* vnode flags (see above) */
  39. bhv_vfs_t *v_vfsp; /* ptr to containing VFS */
  40. bhv_vnumber_t v_number; /* in-core vnode number */
  41. bhv_head_t v_bh; /* behavior head */
  42. spinlock_t v_lock; /* VN_LOCK/VN_UNLOCK */
  43. atomic_t v_iocount; /* outstanding I/O count */
  44. #ifdef XFS_VNODE_TRACE
  45. struct ktrace *v_trace; /* trace header structure */
  46. #endif
  47. struct inode v_inode; /* Linux inode */
  48. /* inode MUST be last */
  49. } bhv_vnode_t;
  50. #define VN_ISLNK(vp) S_ISLNK((vp)->v_inode.i_mode)
  51. #define VN_ISREG(vp) S_ISREG((vp)->v_inode.i_mode)
  52. #define VN_ISDIR(vp) S_ISDIR((vp)->v_inode.i_mode)
  53. #define VN_ISCHR(vp) S_ISCHR((vp)->v_inode.i_mode)
  54. #define VN_ISBLK(vp) S_ISBLK((vp)->v_inode.i_mode)
  55. #define VNODE_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
  56. #define VNODE_POSITION_TOP BHV_POSITION_TOP /* chain top */
  57. #define VNODE_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
  58. typedef enum {
  59. VN_BHV_UNKNOWN, /* not specified */
  60. VN_BHV_XFS, /* xfs */
  61. VN_BHV_DM, /* data migration */
  62. VN_BHV_QM, /* quota manager */
  63. VN_BHV_IO, /* IO path */
  64. VN_BHV_END /* housekeeping end-of-range */
  65. } vn_bhv_t;
  66. #define VNODE_POSITION_XFS (VNODE_POSITION_BASE)
  67. #define VNODE_POSITION_DM (VNODE_POSITION_BASE+10)
  68. #define VNODE_POSITION_QM (VNODE_POSITION_BASE+20)
  69. #define VNODE_POSITION_IO (VNODE_POSITION_BASE+30)
  70. /*
  71. * Macros for dealing with the behavior descriptor inside of the vnode.
  72. */
  73. #define BHV_TO_VNODE(bdp) ((bhv_vnode_t *)BHV_VOBJ(bdp))
  74. #define BHV_TO_VNODE_NULL(bdp) ((bhv_vnode_t *)BHV_VOBJNULL(bdp))
  75. #define VN_BHV_HEAD(vp) ((bhv_head_t *)(&((vp)->v_bh)))
  76. #define vn_bhv_head_init(bhp,name) bhv_head_init(bhp,name)
  77. #define vn_bhv_remove(bhp,bdp) bhv_remove(bhp,bdp)
  78. /*
  79. * Vnode to Linux inode mapping.
  80. */
  81. static inline struct bhv_vnode *vn_from_inode(struct inode *inode)
  82. {
  83. return container_of(inode, bhv_vnode_t, v_inode);
  84. }
  85. static inline struct inode *vn_to_inode(struct bhv_vnode *vnode)
  86. {
  87. return &vnode->v_inode;
  88. }
  89. /*
  90. * Values for the vop_rwlock/rwunlock flags parameter.
  91. */
  92. typedef enum bhv_vrwlock {
  93. VRWLOCK_NONE,
  94. VRWLOCK_READ,
  95. VRWLOCK_WRITE,
  96. VRWLOCK_WRITE_DIRECT,
  97. VRWLOCK_TRY_READ,
  98. VRWLOCK_TRY_WRITE
  99. } bhv_vrwlock_t;
  100. /*
  101. * Return values for bhv_vop_inactive. A return value of
  102. * VN_INACTIVE_NOCACHE implies that the file system behavior
  103. * has disassociated its state and bhv_desc_t from the vnode.
  104. */
  105. #define VN_INACTIVE_CACHE 0
  106. #define VN_INACTIVE_NOCACHE 1
  107. /*
  108. * Values for the cmd code given to vop_vnode_change.
  109. */
  110. typedef enum bhv_vchange {
  111. VCHANGE_FLAGS_FRLOCKS = 0,
  112. VCHANGE_FLAGS_ENF_LOCKING = 1,
  113. VCHANGE_FLAGS_TRUNCATED = 2,
  114. VCHANGE_FLAGS_PAGE_DIRTY = 3,
  115. VCHANGE_FLAGS_IOEXCL_COUNT = 4
  116. } bhv_vchange_t;
  117. typedef enum { L_FALSE, L_TRUE } lastclose_t;
  118. typedef int (*vop_open_t)(bhv_desc_t *, struct cred *);
  119. typedef int (*vop_close_t)(bhv_desc_t *, int, lastclose_t, struct cred *);
  120. typedef ssize_t (*vop_read_t)(bhv_desc_t *, struct kiocb *,
  121. const struct iovec *, unsigned int,
  122. loff_t *, int, struct cred *);
  123. typedef ssize_t (*vop_write_t)(bhv_desc_t *, struct kiocb *,
  124. const struct iovec *, unsigned int,
  125. loff_t *, int, struct cred *);
  126. typedef ssize_t (*vop_sendfile_t)(bhv_desc_t *, struct file *,
  127. loff_t *, int, size_t, read_actor_t,
  128. void *, struct cred *);
  129. typedef ssize_t (*vop_splice_read_t)(bhv_desc_t *, struct file *, loff_t *,
  130. struct pipe_inode_info *, size_t, int, int,
  131. struct cred *);
  132. typedef ssize_t (*vop_splice_write_t)(bhv_desc_t *, struct pipe_inode_info *,
  133. struct file *, loff_t *, size_t, int, int,
  134. struct cred *);
  135. typedef int (*vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *,
  136. int, unsigned int, void __user *);
  137. typedef int (*vop_getattr_t)(bhv_desc_t *, struct bhv_vattr *, int,
  138. struct cred *);
  139. typedef int (*vop_setattr_t)(bhv_desc_t *, struct bhv_vattr *, int,
  140. struct cred *);
  141. typedef int (*vop_access_t)(bhv_desc_t *, int, struct cred *);
  142. typedef int (*vop_lookup_t)(bhv_desc_t *, bhv_vname_t *, bhv_vnode_t **,
  143. int, bhv_vnode_t *, struct cred *);
  144. typedef int (*vop_create_t)(bhv_desc_t *, bhv_vname_t *, struct bhv_vattr *,
  145. bhv_vnode_t **, struct cred *);
  146. typedef int (*vop_remove_t)(bhv_desc_t *, bhv_vname_t *, struct cred *);
  147. typedef int (*vop_link_t)(bhv_desc_t *, bhv_vnode_t *, bhv_vname_t *,
  148. struct cred *);
  149. typedef int (*vop_rename_t)(bhv_desc_t *, bhv_vname_t *, bhv_vnode_t *,
  150. bhv_vname_t *, struct cred *);
  151. typedef int (*vop_mkdir_t)(bhv_desc_t *, bhv_vname_t *, struct bhv_vattr *,
  152. bhv_vnode_t **, struct cred *);
  153. typedef int (*vop_rmdir_t)(bhv_desc_t *, bhv_vname_t *, struct cred *);
  154. typedef int (*vop_readdir_t)(bhv_desc_t *, struct uio *, struct cred *,
  155. int *);
  156. typedef int (*vop_symlink_t)(bhv_desc_t *, bhv_vname_t *, struct bhv_vattr*,
  157. char *, bhv_vnode_t **, struct cred *);
  158. typedef int (*vop_readlink_t)(bhv_desc_t *, struct uio *, int,
  159. struct cred *);
  160. typedef int (*vop_fsync_t)(bhv_desc_t *, int, struct cred *,
  161. xfs_off_t, xfs_off_t);
  162. typedef int (*vop_inactive_t)(bhv_desc_t *, struct cred *);
  163. typedef int (*vop_fid2_t)(bhv_desc_t *, struct fid *);
  164. typedef int (*vop_release_t)(bhv_desc_t *);
  165. typedef int (*vop_rwlock_t)(bhv_desc_t *, bhv_vrwlock_t);
  166. typedef void (*vop_rwunlock_t)(bhv_desc_t *, bhv_vrwlock_t);
  167. typedef int (*vop_bmap_t)(bhv_desc_t *, xfs_off_t, ssize_t, int,
  168. struct xfs_iomap *, int *);
  169. typedef int (*vop_reclaim_t)(bhv_desc_t *);
  170. typedef int (*vop_attr_get_t)(bhv_desc_t *, const char *, char *, int *,
  171. int, struct cred *);
  172. typedef int (*vop_attr_set_t)(bhv_desc_t *, const char *, char *, int,
  173. int, struct cred *);
  174. typedef int (*vop_attr_remove_t)(bhv_desc_t *, const char *,
  175. int, struct cred *);
  176. typedef int (*vop_attr_list_t)(bhv_desc_t *, char *, int, int,
  177. struct attrlist_cursor_kern *, struct cred *);
  178. typedef void (*vop_link_removed_t)(bhv_desc_t *, bhv_vnode_t *, int);
  179. typedef void (*vop_vnode_change_t)(bhv_desc_t *, bhv_vchange_t, __psint_t);
  180. typedef void (*vop_ptossvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
  181. typedef void (*vop_pflushinvalvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
  182. typedef int (*vop_pflushvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t,
  183. uint64_t, int);
  184. typedef int (*vop_iflush_t)(bhv_desc_t *, int);
  185. typedef struct bhv_vnodeops {
  186. bhv_position_t vn_position; /* position within behavior chain */
  187. vop_open_t vop_open;
  188. vop_close_t vop_close;
  189. vop_read_t vop_read;
  190. vop_write_t vop_write;
  191. vop_sendfile_t vop_sendfile;
  192. vop_splice_read_t vop_splice_read;
  193. vop_splice_write_t vop_splice_write;
  194. vop_ioctl_t vop_ioctl;
  195. vop_getattr_t vop_getattr;
  196. vop_setattr_t vop_setattr;
  197. vop_access_t vop_access;
  198. vop_lookup_t vop_lookup;
  199. vop_create_t vop_create;
  200. vop_remove_t vop_remove;
  201. vop_link_t vop_link;
  202. vop_rename_t vop_rename;
  203. vop_mkdir_t vop_mkdir;
  204. vop_rmdir_t vop_rmdir;
  205. vop_readdir_t vop_readdir;
  206. vop_symlink_t vop_symlink;
  207. vop_readlink_t vop_readlink;
  208. vop_fsync_t vop_fsync;
  209. vop_inactive_t vop_inactive;
  210. vop_fid2_t vop_fid2;
  211. vop_rwlock_t vop_rwlock;
  212. vop_rwunlock_t vop_rwunlock;
  213. vop_bmap_t vop_bmap;
  214. vop_reclaim_t vop_reclaim;
  215. vop_attr_get_t vop_attr_get;
  216. vop_attr_set_t vop_attr_set;
  217. vop_attr_remove_t vop_attr_remove;
  218. vop_attr_list_t vop_attr_list;
  219. vop_link_removed_t vop_link_removed;
  220. vop_vnode_change_t vop_vnode_change;
  221. vop_ptossvp_t vop_tosspages;
  222. vop_pflushinvalvp_t vop_flushinval_pages;
  223. vop_pflushvp_t vop_flush_pages;
  224. vop_release_t vop_release;
  225. vop_iflush_t vop_iflush;
  226. } bhv_vnodeops_t;
  227. /*
  228. * Virtual node operations, operating from head bhv.
  229. */
  230. #define VNHEAD(vp) ((vp)->v_bh.bh_first)
  231. #define VOP(op, vp) (*((bhv_vnodeops_t *)VNHEAD(vp)->bd_ops)->op)
  232. #define bhv_vop_open(vp, cr) VOP(vop_open, vp)(VNHEAD(vp),cr)
  233. #define bhv_vop_close(vp, f,last,cr) VOP(vop_close, vp)(VNHEAD(vp),f,last,cr)
  234. #define bhv_vop_read(vp,file,iov,segs,offset,ioflags,cr) \
  235. VOP(vop_read, vp)(VNHEAD(vp),file,iov,segs,offset,ioflags,cr)
  236. #define bhv_vop_write(vp,file,iov,segs,offset,ioflags,cr) \
  237. VOP(vop_write, vp)(VNHEAD(vp),file,iov,segs,offset,ioflags,cr)
  238. #define bhv_vop_sendfile(vp,f,off,ioflags,cnt,act,targ,cr) \
  239. VOP(vop_sendfile, vp)(VNHEAD(vp),f,off,ioflags,cnt,act,targ,cr)
  240. #define bhv_vop_splice_read(vp,f,o,pipe,cnt,fl,iofl,cr) \
  241. VOP(vop_splice_read, vp)(VNHEAD(vp),f,o,pipe,cnt,fl,iofl,cr)
  242. #define bhv_vop_splice_write(vp,f,o,pipe,cnt,fl,iofl,cr) \
  243. VOP(vop_splice_write, vp)(VNHEAD(vp),f,o,pipe,cnt,fl,iofl,cr)
  244. #define bhv_vop_bmap(vp,of,sz,rw,b,n) \
  245. VOP(vop_bmap, vp)(VNHEAD(vp),of,sz,rw,b,n)
  246. #define bhv_vop_getattr(vp, vap,f,cr) \
  247. VOP(vop_getattr, vp)(VNHEAD(vp), vap,f,cr)
  248. #define bhv_vop_setattr(vp, vap,f,cr) \
  249. VOP(vop_setattr, vp)(VNHEAD(vp), vap,f,cr)
  250. #define bhv_vop_access(vp, mode,cr) VOP(vop_access, vp)(VNHEAD(vp), mode,cr)
  251. #define bhv_vop_lookup(vp,d,vpp,f,rdir,cr) \
  252. VOP(vop_lookup, vp)(VNHEAD(vp),d,vpp,f,rdir,cr)
  253. #define bhv_vop_create(dvp,d,vap,vpp,cr) \
  254. VOP(vop_create, dvp)(VNHEAD(dvp),d,vap,vpp,cr)
  255. #define bhv_vop_remove(dvp,d,cr) VOP(vop_remove, dvp)(VNHEAD(dvp),d,cr)
  256. #define bhv_vop_link(dvp,fvp,d,cr) VOP(vop_link, dvp)(VNHEAD(dvp),fvp,d,cr)
  257. #define bhv_vop_rename(fvp,fnm,tdvp,tnm,cr) \
  258. VOP(vop_rename, fvp)(VNHEAD(fvp),fnm,tdvp,tnm,cr)
  259. #define bhv_vop_mkdir(dp,d,vap,vpp,cr) \
  260. VOP(vop_mkdir, dp)(VNHEAD(dp),d,vap,vpp,cr)
  261. #define bhv_vop_rmdir(dp,d,cr) VOP(vop_rmdir, dp)(VNHEAD(dp),d,cr)
  262. #define bhv_vop_readdir(vp,uiop,cr,eofp) \
  263. VOP(vop_readdir, vp)(VNHEAD(vp),uiop,cr,eofp)
  264. #define bhv_vop_symlink(dvp,d,vap,tnm,vpp,cr) \
  265. VOP(vop_symlink, dvp)(VNHEAD(dvp),d,vap,tnm,vpp,cr)
  266. #define bhv_vop_readlink(vp,uiop,fl,cr) \
  267. VOP(vop_readlink, vp)(VNHEAD(vp),uiop,fl,cr)
  268. #define bhv_vop_fsync(vp,f,cr,b,e) VOP(vop_fsync, vp)(VNHEAD(vp),f,cr,b,e)
  269. #define bhv_vop_inactive(vp,cr) VOP(vop_inactive, vp)(VNHEAD(vp),cr)
  270. #define bhv_vop_release(vp) VOP(vop_release, vp)(VNHEAD(vp))
  271. #define bhv_vop_fid2(vp,fidp) VOP(vop_fid2, vp)(VNHEAD(vp),fidp)
  272. #define bhv_vop_rwlock(vp,i) VOP(vop_rwlock, vp)(VNHEAD(vp),i)
  273. #define bhv_vop_rwlock_try(vp,i) VOP(vop_rwlock, vp)(VNHEAD(vp),i)
  274. #define bhv_vop_rwunlock(vp,i) VOP(vop_rwunlock, vp)(VNHEAD(vp),i)
  275. #define bhv_vop_frlock(vp,c,fl,flags,offset,fr) \
  276. VOP(vop_frlock, vp)(VNHEAD(vp),c,fl,flags,offset,fr)
  277. #define bhv_vop_reclaim(vp) VOP(vop_reclaim, vp)(VNHEAD(vp))
  278. #define bhv_vop_attr_get(vp, name, val, vallenp, fl, cred) \
  279. VOP(vop_attr_get, vp)(VNHEAD(vp),name,val,vallenp,fl,cred)
  280. #define bhv_vop_attr_set(vp, name, val, vallen, fl, cred) \
  281. VOP(vop_attr_set, vp)(VNHEAD(vp),name,val,vallen,fl,cred)
  282. #define bhv_vop_attr_remove(vp, name, flags, cred) \
  283. VOP(vop_attr_remove, vp)(VNHEAD(vp),name,flags,cred)
  284. #define bhv_vop_attr_list(vp, buf, buflen, fl, cursor, cred) \
  285. VOP(vop_attr_list, vp)(VNHEAD(vp),buf,buflen,fl,cursor,cred)
  286. #define bhv_vop_link_removed(vp, dvp, linkzero) \
  287. VOP(vop_link_removed, vp)(VNHEAD(vp), dvp, linkzero)
  288. #define bhv_vop_vnode_change(vp, cmd, val) \
  289. VOP(vop_vnode_change, vp)(VNHEAD(vp), cmd, val)
  290. #define bhv_vop_toss_pages(vp, first, last, fiopt) \
  291. VOP(vop_tosspages, vp)(VNHEAD(vp), first, last, fiopt)
  292. #define bhv_vop_flushinval_pages(vp, first, last, fiopt) \
  293. VOP(vop_flushinval_pages, vp)(VNHEAD(vp),first,last,fiopt)
  294. #define bhv_vop_flush_pages(vp, first, last, flags, fiopt) \
  295. VOP(vop_flush_pages, vp)(VNHEAD(vp),first,last,flags,fiopt)
  296. #define bhv_vop_ioctl(vp, inode, filp, fl, cmd, arg) \
  297. VOP(vop_ioctl, vp)(VNHEAD(vp),inode,filp,fl,cmd,arg)
  298. #define bhv_vop_iflush(vp, flags) VOP(vop_iflush, vp)(VNHEAD(vp), flags)
  299. /*
  300. * Flags for read/write calls - same values as IRIX
  301. */
  302. #define IO_ISAIO 0x00001 /* don't wait for completion */
  303. #define IO_ISDIRECT 0x00004 /* bypass page cache */
  304. #define IO_INVIS 0x00020 /* don't update inode timestamps */
  305. /*
  306. * Flags for vop_iflush call
  307. */
  308. #define FLUSH_SYNC 1 /* wait for flush to complete */
  309. #define FLUSH_INODE 2 /* flush the inode itself */
  310. #define FLUSH_LOG 4 /* force the last log entry for
  311. * this inode out to disk */
  312. /*
  313. * Flush/Invalidate options for vop_toss/flush/flushinval_pages.
  314. */
  315. #define FI_NONE 0 /* none */
  316. #define FI_REMAPF 1 /* Do a remapf prior to the operation */
  317. #define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
  318. Prevent VM access to the pages until
  319. the operation completes. */
  320. /*
  321. * Vnode attributes. va_mask indicates those attributes the caller
  322. * wants to set or extract.
  323. */
  324. typedef struct bhv_vattr {
  325. int va_mask; /* bit-mask of attributes present */
  326. mode_t va_mode; /* file access mode and type */
  327. xfs_nlink_t va_nlink; /* number of references to file */
  328. uid_t va_uid; /* owner user id */
  329. gid_t va_gid; /* owner group id */
  330. xfs_ino_t va_nodeid; /* file id */
  331. xfs_off_t va_size; /* file size in bytes */
  332. u_long va_blocksize; /* blocksize preferred for i/o */
  333. struct timespec va_atime; /* time of last access */
  334. struct timespec va_mtime; /* time of last modification */
  335. struct timespec va_ctime; /* time file changed */
  336. u_int va_gen; /* generation number of file */
  337. xfs_dev_t va_rdev; /* device the special file represents */
  338. __int64_t va_nblocks; /* number of blocks allocated */
  339. u_long va_xflags; /* random extended file flags */
  340. u_long va_extsize; /* file extent size */
  341. u_long va_nextents; /* number of extents in file */
  342. u_long va_anextents; /* number of attr extents in file */
  343. prid_t va_projid; /* project id */
  344. } bhv_vattr_t;
  345. /*
  346. * setattr or getattr attributes
  347. */
  348. #define XFS_AT_TYPE 0x00000001
  349. #define XFS_AT_MODE 0x00000002
  350. #define XFS_AT_UID 0x00000004
  351. #define XFS_AT_GID 0x00000008
  352. #define XFS_AT_FSID 0x00000010
  353. #define XFS_AT_NODEID 0x00000020
  354. #define XFS_AT_NLINK 0x00000040
  355. #define XFS_AT_SIZE 0x00000080
  356. #define XFS_AT_ATIME 0x00000100
  357. #define XFS_AT_MTIME 0x00000200
  358. #define XFS_AT_CTIME 0x00000400
  359. #define XFS_AT_RDEV 0x00000800
  360. #define XFS_AT_BLKSIZE 0x00001000
  361. #define XFS_AT_NBLOCKS 0x00002000
  362. #define XFS_AT_VCODE 0x00004000
  363. #define XFS_AT_MAC 0x00008000
  364. #define XFS_AT_UPDATIME 0x00010000
  365. #define XFS_AT_UPDMTIME 0x00020000
  366. #define XFS_AT_UPDCTIME 0x00040000
  367. #define XFS_AT_ACL 0x00080000
  368. #define XFS_AT_CAP 0x00100000
  369. #define XFS_AT_INF 0x00200000
  370. #define XFS_AT_XFLAGS 0x00400000
  371. #define XFS_AT_EXTSIZE 0x00800000
  372. #define XFS_AT_NEXTENTS 0x01000000
  373. #define XFS_AT_ANEXTENTS 0x02000000
  374. #define XFS_AT_PROJID 0x04000000
  375. #define XFS_AT_SIZE_NOPERM 0x08000000
  376. #define XFS_AT_GENCOUNT 0x10000000
  377. #define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
  378. XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
  379. XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
  380. XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
  381. XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
  382. XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)
  383. #define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
  384. XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
  385. XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
  386. XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID)
  387. #define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME)
  388. #define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME)
  389. #define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\
  390. XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\
  391. XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT)
  392. /*
  393. * Modes.
  394. */
  395. #define VSUID S_ISUID /* set user id on execution */
  396. #define VSGID S_ISGID /* set group id on execution */
  397. #define VSVTX S_ISVTX /* save swapped text even after use */
  398. #define VREAD S_IRUSR /* read, write, execute permissions */
  399. #define VWRITE S_IWUSR
  400. #define VEXEC S_IXUSR
  401. #define MODEMASK S_IALLUGO /* mode bits plus permission bits */
  402. /*
  403. * Check whether mandatory file locking is enabled.
  404. */
  405. #define MANDLOCK(vp, mode) \
  406. (VN_ISREG(vp) && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
  407. extern void vn_init(void);
  408. extern bhv_vnode_t *vn_initialize(struct inode *);
  409. extern int vn_revalidate(struct bhv_vnode *);
  410. extern int __vn_revalidate(struct bhv_vnode *, bhv_vattr_t *);
  411. extern void vn_revalidate_core(struct bhv_vnode *, bhv_vattr_t *);
  412. extern void vn_iowait(struct bhv_vnode *vp);
  413. extern void vn_iowake(struct bhv_vnode *vp);
  414. extern void vn_ioerror(struct bhv_vnode *vp, int error, char *f, int l);
  415. static inline int vn_count(struct bhv_vnode *vp)
  416. {
  417. return atomic_read(&vn_to_inode(vp)->i_count);
  418. }
  419. /*
  420. * Vnode reference counting functions (and macros for compatibility).
  421. */
  422. extern bhv_vnode_t *vn_hold(struct bhv_vnode *);
  423. #if defined(XFS_VNODE_TRACE)
  424. #define VN_HOLD(vp) \
  425. ((void)vn_hold(vp), \
  426. vn_trace_hold(vp, __FILE__, __LINE__, (inst_t *)__return_address))
  427. #define VN_RELE(vp) \
  428. (vn_trace_rele(vp, __FILE__, __LINE__, (inst_t *)__return_address), \
  429. iput(vn_to_inode(vp)))
  430. #else
  431. #define VN_HOLD(vp) ((void)vn_hold(vp))
  432. #define VN_RELE(vp) (iput(vn_to_inode(vp)))
  433. #endif
  434. static inline struct bhv_vnode *vn_grab(struct bhv_vnode *vp)
  435. {
  436. struct inode *inode = igrab(vn_to_inode(vp));
  437. return inode ? vn_from_inode(inode) : NULL;
  438. }
  439. /*
  440. * Vname handling macros.
  441. */
  442. #define VNAME(dentry) ((char *) (dentry)->d_name.name)
  443. #define VNAMELEN(dentry) ((dentry)->d_name.len)
  444. #define VNAME_TO_VNODE(dentry) (vn_from_inode((dentry)->d_inode))
  445. /*
  446. * Vnode spinlock manipulation.
  447. */
  448. #define VN_LOCK(vp) mutex_spinlock(&(vp)->v_lock)
  449. #define VN_UNLOCK(vp, s) mutex_spinunlock(&(vp)->v_lock, s)
  450. STATIC_INLINE void vn_flagset(struct bhv_vnode *vp, uint flag)
  451. {
  452. spin_lock(&vp->v_lock);
  453. vp->v_flag |= flag;
  454. spin_unlock(&vp->v_lock);
  455. }
  456. STATIC_INLINE uint vn_flagclr(struct bhv_vnode *vp, uint flag)
  457. {
  458. uint cleared;
  459. spin_lock(&vp->v_lock);
  460. cleared = (vp->v_flag & flag);
  461. vp->v_flag &= ~flag;
  462. spin_unlock(&vp->v_lock);
  463. return cleared;
  464. }
  465. #define VMODIFY(vp) vn_flagset(vp, VMODIFIED)
  466. #define VUNMODIFY(vp) vn_flagclr(vp, VMODIFIED)
  467. #define VTRUNCATE(vp) vn_flagset(vp, VTRUNCATED)
  468. #define VUNTRUNCATE(vp) vn_flagclr(vp, VTRUNCATED)
  469. /*
  470. * Dealing with bad inodes
  471. */
  472. static inline void vn_mark_bad(struct bhv_vnode *vp)
  473. {
  474. make_bad_inode(vn_to_inode(vp));
  475. }
  476. static inline int VN_BAD(struct bhv_vnode *vp)
  477. {
  478. return is_bad_inode(vn_to_inode(vp));
  479. }
  480. /*
  481. * Extracting atime values in various formats
  482. */
  483. static inline void vn_atime_to_bstime(bhv_vnode_t *vp, xfs_bstime_t *bs_atime)
  484. {
  485. bs_atime->tv_sec = vp->v_inode.i_atime.tv_sec;
  486. bs_atime->tv_nsec = vp->v_inode.i_atime.tv_nsec;
  487. }
  488. static inline void vn_atime_to_timespec(bhv_vnode_t *vp, struct timespec *ts)
  489. {
  490. *ts = vp->v_inode.i_atime;
  491. }
  492. static inline void vn_atime_to_time_t(bhv_vnode_t *vp, time_t *tt)
  493. {
  494. *tt = vp->v_inode.i_atime.tv_sec;
  495. }
  496. /*
  497. * Some useful predicates.
  498. */
  499. #define VN_MAPPED(vp) mapping_mapped(vn_to_inode(vp)->i_mapping)
  500. #define VN_CACHED(vp) (vn_to_inode(vp)->i_mapping->nrpages)
  501. #define VN_DIRTY(vp) mapping_tagged(vn_to_inode(vp)->i_mapping, \
  502. PAGECACHE_TAG_DIRTY)
  503. #define VN_TRUNC(vp) ((vp)->v_flag & VTRUNCATED)
  504. /*
  505. * Flags to vop_setattr/getattr.
  506. */
  507. #define ATTR_UTIME 0x01 /* non-default utime(2) request */
  508. #define ATTR_DMI 0x08 /* invocation from a DMI function */
  509. #define ATTR_LAZY 0x80 /* set/get attributes lazily */
  510. #define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */
  511. #define ATTR_NOLOCK 0x200 /* Don't grab any conflicting locks */
  512. #define ATTR_NOSIZETOK 0x400 /* Don't get the SIZE token */
  513. /*
  514. * Flags to vop_fsync/reclaim.
  515. */
  516. #define FSYNC_NOWAIT 0 /* asynchronous flush */
  517. #define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */
  518. #define FSYNC_INVAL 0x2 /* flush and invalidate cached data */
  519. #define FSYNC_DATA 0x4 /* synchronous fsync of data only */
  520. /*
  521. * Tracking vnode activity.
  522. */
  523. #if defined(XFS_VNODE_TRACE)
  524. #define VNODE_TRACE_SIZE 16 /* number of trace entries */
  525. #define VNODE_KTRACE_ENTRY 1
  526. #define VNODE_KTRACE_EXIT 2
  527. #define VNODE_KTRACE_HOLD 3
  528. #define VNODE_KTRACE_REF 4
  529. #define VNODE_KTRACE_RELE 5
  530. extern void vn_trace_entry(struct bhv_vnode *, const char *, inst_t *);
  531. extern void vn_trace_exit(struct bhv_vnode *, const char *, inst_t *);
  532. extern void vn_trace_hold(struct bhv_vnode *, char *, int, inst_t *);
  533. extern void vn_trace_ref(struct bhv_vnode *, char *, int, inst_t *);
  534. extern void vn_trace_rele(struct bhv_vnode *, char *, int, inst_t *);
  535. #define VN_TRACE(vp) \
  536. vn_trace_ref(vp, __FILE__, __LINE__, (inst_t *)__return_address)
  537. #else
  538. #define vn_trace_entry(a,b,c)
  539. #define vn_trace_exit(a,b,c)
  540. #define vn_trace_hold(a,b,c,d)
  541. #define vn_trace_ref(a,b,c,d)
  542. #define vn_trace_rele(a,b,c,d)
  543. #define VN_TRACE(vp)
  544. #endif
  545. #endif /* __XFS_VNODE_H__ */