2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
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.
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.
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
18 #ifndef __XFS_VNODE_H__
19 #define __XFS_VNODE_H__
25 struct attrlist_cursor_kern;
27 typedef struct dentry bhv_vname_t;
28 typedef __u64 bhv_vnumber_t;
29 typedef struct inode bhv_vnode_t;
31 #define VN_ISLNK(vp) S_ISLNK((vp)->i_mode)
32 #define VN_ISREG(vp) S_ISREG((vp)->i_mode)
33 #define VN_ISDIR(vp) S_ISDIR((vp)->i_mode)
34 #define VN_ISCHR(vp) S_ISCHR((vp)->i_mode)
35 #define VN_ISBLK(vp) S_ISBLK((vp)->i_mode)
38 * Vnode to Linux inode mapping.
40 static inline bhv_vnode_t *vn_from_inode(struct inode *inode)
44 static inline struct inode *vn_to_inode(bhv_vnode_t *vnode)
50 * Values for the vop_rwlock/rwunlock flags parameter.
52 typedef enum bhv_vrwlock {
62 * Return values for xfs_inactive. A return value of
63 * VN_INACTIVE_NOCACHE implies that the file system behavior
64 * has disassociated its state and bhv_desc_t from the vnode.
66 #define VN_INACTIVE_CACHE 0
67 #define VN_INACTIVE_NOCACHE 1
70 * Flags for read/write calls - same values as IRIX
72 #define IO_ISAIO 0x00001 /* don't wait for completion */
73 #define IO_ISDIRECT 0x00004 /* bypass page cache */
74 #define IO_INVIS 0x00020 /* don't update inode timestamps */
77 * Flags for vop_iflush call
79 #define FLUSH_SYNC 1 /* wait for flush to complete */
80 #define FLUSH_INODE 2 /* flush the inode itself */
81 #define FLUSH_LOG 4 /* force the last log entry for
82 * this inode out to disk */
85 * Flush/Invalidate options for vop_toss/flush/flushinval_pages.
87 #define FI_NONE 0 /* none */
88 #define FI_REMAPF 1 /* Do a remapf prior to the operation */
89 #define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
90 Prevent VM access to the pages until
91 the operation completes. */
94 * Vnode attributes. va_mask indicates those attributes the caller
95 * wants to set or extract.
97 typedef struct bhv_vattr {
98 int va_mask; /* bit-mask of attributes present */
99 mode_t va_mode; /* file access mode and type */
100 xfs_nlink_t va_nlink; /* number of references to file */
101 uid_t va_uid; /* owner user id */
102 gid_t va_gid; /* owner group id */
103 xfs_ino_t va_nodeid; /* file id */
104 xfs_off_t va_size; /* file size in bytes */
105 u_long va_blocksize; /* blocksize preferred for i/o */
106 struct timespec va_atime; /* time of last access */
107 struct timespec va_mtime; /* time of last modification */
108 struct timespec va_ctime; /* time file changed */
109 u_int va_gen; /* generation number of file */
110 xfs_dev_t va_rdev; /* device the special file represents */
111 __int64_t va_nblocks; /* number of blocks allocated */
112 u_long va_xflags; /* random extended file flags */
113 u_long va_extsize; /* file extent size */
114 u_long va_nextents; /* number of extents in file */
115 u_long va_anextents; /* number of attr extents in file */
116 prid_t va_projid; /* project id */
120 * setattr or getattr attributes
122 #define XFS_AT_TYPE 0x00000001
123 #define XFS_AT_MODE 0x00000002
124 #define XFS_AT_UID 0x00000004
125 #define XFS_AT_GID 0x00000008
126 #define XFS_AT_FSID 0x00000010
127 #define XFS_AT_NODEID 0x00000020
128 #define XFS_AT_NLINK 0x00000040
129 #define XFS_AT_SIZE 0x00000080
130 #define XFS_AT_ATIME 0x00000100
131 #define XFS_AT_MTIME 0x00000200
132 #define XFS_AT_CTIME 0x00000400
133 #define XFS_AT_RDEV 0x00000800
134 #define XFS_AT_BLKSIZE 0x00001000
135 #define XFS_AT_NBLOCKS 0x00002000
136 #define XFS_AT_VCODE 0x00004000
137 #define XFS_AT_MAC 0x00008000
138 #define XFS_AT_UPDATIME 0x00010000
139 #define XFS_AT_UPDMTIME 0x00020000
140 #define XFS_AT_UPDCTIME 0x00040000
141 #define XFS_AT_ACL 0x00080000
142 #define XFS_AT_CAP 0x00100000
143 #define XFS_AT_INF 0x00200000
144 #define XFS_AT_XFLAGS 0x00400000
145 #define XFS_AT_EXTSIZE 0x00800000
146 #define XFS_AT_NEXTENTS 0x01000000
147 #define XFS_AT_ANEXTENTS 0x02000000
148 #define XFS_AT_PROJID 0x04000000
149 #define XFS_AT_SIZE_NOPERM 0x08000000
150 #define XFS_AT_GENCOUNT 0x10000000
152 #define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
153 XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
154 XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
155 XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
156 XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
157 XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)
159 #define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
160 XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
161 XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
162 XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID)
164 #define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME)
166 #define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME)
168 #define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\
169 XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\
170 XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT)
175 #define VSUID S_ISUID /* set user id on execution */
176 #define VSGID S_ISGID /* set group id on execution */
177 #define VSVTX S_ISVTX /* save swapped text even after use */
178 #define VREAD S_IRUSR /* read, write, execute permissions */
179 #define VWRITE S_IWUSR
180 #define VEXEC S_IXUSR
182 #define MODEMASK S_IALLUGO /* mode bits plus permission bits */
185 * Check whether mandatory file locking is enabled.
187 #define MANDLOCK(vp, mode) \
188 (VN_ISREG(vp) && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
190 extern void vn_init(void);
191 extern bhv_vnode_t *vn_initialize(struct inode *);
192 extern int vn_revalidate(bhv_vnode_t *);
193 extern int __vn_revalidate(bhv_vnode_t *, bhv_vattr_t *);
194 extern void vn_revalidate_core(bhv_vnode_t *, bhv_vattr_t *);
197 * Yeah, these don't take vnode anymore at all, all this should be
198 * cleaned up at some point.
200 extern void vn_iowait(struct xfs_inode *ip);
201 extern void vn_iowake(struct xfs_inode *ip);
202 extern void vn_ioerror(struct xfs_inode *ip, int error, char *f, int l);
204 static inline int vn_count(bhv_vnode_t *vp)
206 return atomic_read(&vn_to_inode(vp)->i_count);
210 * Vnode reference counting functions (and macros for compatibility).
212 extern bhv_vnode_t *vn_hold(bhv_vnode_t *);
214 #if defined(XFS_VNODE_TRACE)
215 #define VN_HOLD(vp) \
216 ((void)vn_hold(vp), \
217 vn_trace_hold(xfs_vtoi(vp), __FILE__, __LINE__, (inst_t *)__return_address))
218 #define VN_RELE(vp) \
219 (vn_trace_rele(xfs_vtoi(vp), __FILE__, __LINE__, (inst_t *)__return_address), \
220 iput(vn_to_inode(vp)))
222 #define VN_HOLD(vp) ((void)vn_hold(vp))
223 #define VN_RELE(vp) (iput(vn_to_inode(vp)))
226 static inline bhv_vnode_t *vn_grab(bhv_vnode_t *vp)
228 struct inode *inode = igrab(vn_to_inode(vp));
229 return inode ? vn_from_inode(inode) : NULL;
233 * Vname handling macros.
235 #define VNAME(dentry) ((char *) (dentry)->d_name.name)
236 #define VNAMELEN(dentry) ((dentry)->d_name.len)
237 #define VNAME_TO_VNODE(dentry) (vn_from_inode((dentry)->d_inode))
240 * Dealing with bad inodes
242 static inline void vn_mark_bad(bhv_vnode_t *vp)
244 make_bad_inode(vn_to_inode(vp));
247 static inline int VN_BAD(bhv_vnode_t *vp)
249 return is_bad_inode(vn_to_inode(vp));
253 * Extracting atime values in various formats
255 static inline void vn_atime_to_bstime(bhv_vnode_t *vp, xfs_bstime_t *bs_atime)
257 bs_atime->tv_sec = vp->i_atime.tv_sec;
258 bs_atime->tv_nsec = vp->i_atime.tv_nsec;
261 static inline void vn_atime_to_timespec(bhv_vnode_t *vp, struct timespec *ts)
266 static inline void vn_atime_to_time_t(bhv_vnode_t *vp, time_t *tt)
268 *tt = vp->i_atime.tv_sec;
272 * Some useful predicates.
274 #define VN_MAPPED(vp) mapping_mapped(vn_to_inode(vp)->i_mapping)
275 #define VN_CACHED(vp) (vn_to_inode(vp)->i_mapping->nrpages)
276 #define VN_DIRTY(vp) mapping_tagged(vn_to_inode(vp)->i_mapping, \
280 * Flags to vop_setattr/getattr.
282 #define ATTR_UTIME 0x01 /* non-default utime(2) request */
283 #define ATTR_DMI 0x08 /* invocation from a DMI function */
284 #define ATTR_LAZY 0x80 /* set/get attributes lazily */
285 #define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */
286 #define ATTR_NOLOCK 0x200 /* Don't grab any conflicting locks */
287 #define ATTR_NOSIZETOK 0x400 /* Don't get the SIZE token */
290 * Flags to vop_fsync/reclaim.
292 #define FSYNC_NOWAIT 0 /* asynchronous flush */
293 #define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */
294 #define FSYNC_INVAL 0x2 /* flush and invalidate cached data */
295 #define FSYNC_DATA 0x4 /* synchronous fsync of data only */
298 * Tracking vnode activity.
300 #if defined(XFS_VNODE_TRACE)
302 #define VNODE_TRACE_SIZE 16 /* number of trace entries */
303 #define VNODE_KTRACE_ENTRY 1
304 #define VNODE_KTRACE_EXIT 2
305 #define VNODE_KTRACE_HOLD 3
306 #define VNODE_KTRACE_REF 4
307 #define VNODE_KTRACE_RELE 5
309 extern void vn_trace_entry(struct xfs_inode *, const char *, inst_t *);
310 extern void vn_trace_exit(struct xfs_inode *, const char *, inst_t *);
311 extern void vn_trace_hold(struct xfs_inode *, char *, int, inst_t *);
312 extern void vn_trace_ref(struct xfs_inode *, char *, int, inst_t *);
313 extern void vn_trace_rele(struct xfs_inode *, char *, int, inst_t *);
315 #define vn_trace_entry(a,b,c)
316 #define vn_trace_exit(a,b,c)
317 #define vn_trace_hold(a,b,c,d)
318 #define vn_trace_ref(a,b,c,d)
319 #define vn_trace_rele(a,b,c,d)
322 #endif /* __XFS_VNODE_H__ */