/* * Copyright (c) 2000-2005 Silicon Graphics, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_VNODE_H__ #define __XFS_VNODE_H__ struct file; struct bhv_vattr; struct xfs_iomap; struct attrlist_cursor_kern; typedef struct dentry bhv_vname_t; typedef __u64 bhv_vnumber_t; typedef struct inode bhv_vnode_t; #define VN_ISLNK(vp) S_ISLNK((vp)->i_mode) #define VN_ISREG(vp) S_ISREG((vp)->i_mode) #define VN_ISDIR(vp) S_ISDIR((vp)->i_mode) #define VN_ISCHR(vp) S_ISCHR((vp)->i_mode) #define VN_ISBLK(vp) S_ISBLK((vp)->i_mode) /* * Vnode to Linux inode mapping. */ static inline bhv_vnode_t *vn_from_inode(struct inode *inode) { return inode; } static inline struct inode *vn_to_inode(bhv_vnode_t *vnode) { return vnode; } /* * Values for the vop_rwlock/rwunlock flags parameter. */ typedef enum bhv_vrwlock { VRWLOCK_NONE, VRWLOCK_READ, VRWLOCK_WRITE, VRWLOCK_WRITE_DIRECT, VRWLOCK_TRY_READ, VRWLOCK_TRY_WRITE } bhv_vrwlock_t; /* * Return values for xfs_inactive. A return value of * VN_INACTIVE_NOCACHE implies that the file system behavior * has disassociated its state and bhv_desc_t from the vnode. */ #define VN_INACTIVE_CACHE 0 #define VN_INACTIVE_NOCACHE 1 /* * Flags for read/write calls - same values as IRIX */ #define IO_ISAIO 0x00001 /* don't wait for completion */ #define IO_ISDIRECT 0x00004 /* bypass page cache */ #define IO_INVIS 0x00020 /* don't update inode timestamps */ /* * Flags for vop_iflush call */ #define FLUSH_SYNC 1 /* wait for flush to complete */ #define FLUSH_INODE 2 /* flush the inode itself */ #define FLUSH_LOG 4 /* force the last log entry for * this inode out to disk */ /* * Flush/Invalidate options for vop_toss/flush/flushinval_pages. */ #define FI_NONE 0 /* none */ #define FI_REMAPF 1 /* Do a remapf prior to the operation */ #define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation. Prevent VM access to the pages until the operation completes. */ /* * Vnode attributes. va_mask indicates those attributes the caller * wants to set or extract. */ typedef struct bhv_vattr { int va_mask; /* bit-mask of attributes present */ mode_t va_mode; /* file access mode and type */ xfs_nlink_t va_nlink; /* number of references to file */ uid_t va_uid; /* owner user id */ gid_t va_gid; /* owner group id */ xfs_ino_t va_nodeid; /* file id */ xfs_off_t va_size; /* file size in bytes */ u_long va_blocksize; /* blocksize preferred for i/o */ struct timespec va_atime; /* time of last access */ struct timespec va_mtime; /* time of last modification */ struct timespec va_ctime; /* time file changed */ u_int va_gen; /* generation number of file */ xfs_dev_t va_rdev; /* device the special file represents */ __int64_t va_nblocks; /* number of blocks allocated */ u_long va_xflags; /* random extended file flags */ u_long va_extsize; /* file extent size */ u_long va_nextents; /* number of extents in file */ u_long va_anextents; /* number of attr extents in file */ prid_t va_projid; /* project id */ } bhv_vattr_t; /* * setattr or getattr attributes */ #define XFS_AT_TYPE 0x00000001 #define XFS_AT_MODE 0x00000002 #define XFS_AT_UID 0x00000004 #define XFS_AT_GID 0x00000008 #define XFS_AT_FSID 0x00000010 #define XFS_AT_NODEID 0x00000020 #define XFS_AT_NLINK 0x00000040 #define XFS_AT_SIZE 0x00000080 #define XFS_AT_ATIME 0x00000100 #define XFS_AT_MTIME 0x00000200 #define XFS_AT_CTIME 0x00000400 #define XFS_AT_RDEV 0x00000800 #define XFS_AT_BLKSIZE 0x00001000 #define XFS_AT_NBLOCKS 0x00002000 #define XFS_AT_VCODE 0x00004000 #define XFS_AT_MAC 0x00008000 #define XFS_AT_UPDATIME 0x00010000 #define XFS_AT_UPDMTIME 0x00020000 #define XFS_AT_UPDCTIME 0x00040000 #define XFS_AT_ACL 0x00080000 #define XFS_AT_CAP 0x00100000 #define XFS_AT_INF 0x00200000 #define XFS_AT_XFLAGS 0x00400000 #define XFS_AT_EXTSIZE 0x00800000 #define XFS_AT_NEXTENTS 0x01000000 #define XFS_AT_ANEXTENTS 0x02000000 #define XFS_AT_PROJID 0x04000000 #define XFS_AT_SIZE_NOPERM 0x08000000 #define XFS_AT_GENCOUNT 0x10000000 #define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\ XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\ XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\ XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\ XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\ XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT) #define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\ XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\ XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\ XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID) #define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME) #define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME) #define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\ XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\ XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT) /* * Modes. */ #define VSUID S_ISUID /* set user id on execution */ #define VSGID S_ISGID /* set group id on execution */ #define VSVTX S_ISVTX /* save swapped text even after use */ #define VREAD S_IRUSR /* read, write, execute permissions */ #define VWRITE S_IWUSR #define VEXEC S_IXUSR #define MODEMASK S_IALLUGO /* mode bits plus permission bits */ /* * Check whether mandatory file locking is enabled. */ #define MANDLOCK(vp, mode) \ (VN_ISREG(vp) && ((mode) & (VSGID|(VEXEC>>3))) == VSGID) extern void vn_init(void); extern bhv_vnode_t *vn_initialize(struct inode *); extern int vn_revalidate(bhv_vnode_t *); extern int __vn_revalidate(bhv_vnode_t *, bhv_vattr_t *); extern void vn_revalidate_core(bhv_vnode_t *, bhv_vattr_t *); /* * Yeah, these don't take vnode anymore at all, all this should be * cleaned up at some point. */ extern void vn_iowait(struct xfs_inode *ip); extern void vn_iowake(struct xfs_inode *ip); extern void vn_ioerror(struct xfs_inode *ip, int error, char *f, int l); static inline int vn_count(bhv_vnode_t *vp) { return atomic_read(&vn_to_inode(vp)->i_count); } /* * Vnode reference counting functions (and macros for compatibility). */ extern bhv_vnode_t *vn_hold(bhv_vnode_t *); #if defined(XFS_INODE_TRACE) #define VN_HOLD(vp) \ ((void)vn_hold(vp), \ xfs_itrace_hold(xfs_vtoi(vp), __FILE__, __LINE__, (inst_t *)__return_address)) #define VN_RELE(vp) \ (xfs_itrace_rele(xfs_vtoi(vp), __FILE__, __LINE__, (inst_t *)__return_address), \ iput(vn_to_inode(vp))) #else #define VN_HOLD(vp) ((void)vn_hold(vp)) #define VN_RELE(vp) (iput(vn_to_inode(vp))) #endif static inline bhv_vnode_t *vn_grab(bhv_vnode_t *vp) { struct inode *inode = igrab(vn_to_inode(vp)); return inode ? vn_from_inode(inode) : NULL; } /* * Vname handling macros. */ #define VNAME(dentry) ((char *) (dentry)->d_name.name) #define VNAMELEN(dentry) ((dentry)->d_name.len) #define VNAME_TO_VNODE(dentry) (vn_from_inode((dentry)->d_inode)) /* * Dealing with bad inodes */ static inline void vn_mark_bad(bhv_vnode_t *vp) { make_bad_inode(vn_to_inode(vp)); } static inline int VN_BAD(bhv_vnode_t *vp) { return is_bad_inode(vn_to_inode(vp)); } /* * Extracting atime values in various formats */ static inline void vn_atime_to_bstime(bhv_vnode_t *vp, xfs_bstime_t *bs_atime) { bs_atime->tv_sec = vp->i_atime.tv_sec; bs_atime->tv_nsec = vp->i_atime.tv_nsec; } static inline void vn_atime_to_timespec(bhv_vnode_t *vp, struct timespec *ts) { *ts = vp->i_atime; } static inline void vn_atime_to_time_t(bhv_vnode_t *vp, time_t *tt) { *tt = vp->i_atime.tv_sec; } /* * Some useful predicates. */ #define VN_MAPPED(vp) mapping_mapped(vn_to_inode(vp)->i_mapping) #define VN_CACHED(vp) (vn_to_inode(vp)->i_mapping->nrpages) #define VN_DIRTY(vp) mapping_tagged(vn_to_inode(vp)->i_mapping, \ PAGECACHE_TAG_DIRTY) /* * Flags to vop_setattr/getattr. */ #define ATTR_UTIME 0x01 /* non-default utime(2) request */ #define ATTR_DMI 0x08 /* invocation from a DMI function */ #define ATTR_LAZY 0x80 /* set/get attributes lazily */ #define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */ #define ATTR_NOLOCK 0x200 /* Don't grab any conflicting locks */ #define ATTR_NOSIZETOK 0x400 /* Don't get the SIZE token */ /* * Flags to vop_fsync/reclaim. */ #define FSYNC_NOWAIT 0 /* asynchronous flush */ #define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */ #define FSYNC_INVAL 0x2 /* flush and invalidate cached data */ #define FSYNC_DATA 0x4 /* synchronous fsync of data only */ /* * Tracking vnode activity. */ #if defined(XFS_INODE_TRACE) #define INODE_TRACE_SIZE 16 /* number of trace entries */ #define INODE_KTRACE_ENTRY 1 #define INODE_KTRACE_EXIT 2 #define INODE_KTRACE_HOLD 3 #define INODE_KTRACE_REF 4 #define INODE_KTRACE_RELE 5 extern void _xfs_itrace_entry(struct xfs_inode *, const char *, inst_t *); extern void _xfs_itrace_exit(struct xfs_inode *, const char *, inst_t *); extern void xfs_itrace_hold(struct xfs_inode *, char *, int, inst_t *); extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *); extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *); #define xfs_itrace_entry(ip) \ _xfs_itrace_entry(ip, __FUNCTION__, (inst_t *)__return_address) #define xfs_itrace_exit(ip) \ _xfs_itrace_exit(ip, __FUNCTION__, (inst_t *)__return_address) #define xfs_itrace_ref(ip) \ _xfs_itrace_ref(ip, __FILE__, __LINE__, (inst_t *)__return_address) #else #define xfs_itrace_entry(a) #define xfs_itrace_exit(a) #define xfs_itrace_hold(a, b, c, d) #define xfs_itrace_ref(a) #define xfs_itrace_rele(a, b, c, d) #endif #endif /* __XFS_VNODE_H__ */