/* * 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 uio; struct file; struct bhv_vfs; struct bhv_vattr; struct xfs_iomap; struct attrlist_cursor_kern; typedef struct dentry bhv_vname_t; typedef __u64 bhv_vnumber_t; typedef enum bhv_vflags { VMODIFIED = 0x08, /* XFS inode state possibly differs */ /* to the Linux inode state. */ VTRUNCATED = 0x40, /* truncated down so flush-on-close */ } bhv_vflags_t; /* * MP locking protocols: * v_flag, v_vfsp VN_LOCK/VN_UNLOCK */ typedef struct bhv_vnode { bhv_vflags_t v_flag; /* vnode flags (see above) */ bhv_vfs_t *v_vfsp; /* ptr to containing VFS */ bhv_vnumber_t v_number; /* in-core vnode number */ bhv_head_t v_bh; /* behavior head */ spinlock_t v_lock; /* VN_LOCK/VN_UNLOCK */ atomic_t v_iocount; /* outstanding I/O count */ #ifdef XFS_VNODE_TRACE struct ktrace *v_trace; /* trace header structure */ #endif struct inode v_inode; /* Linux inode */ /* inode MUST be last */ } bhv_vnode_t; #define VN_ISLNK(vp) S_ISLNK((vp)->v_inode.i_mode) #define VN_ISREG(vp) S_ISREG((vp)->v_inode.i_mode) #define VN_ISDIR(vp) S_ISDIR((vp)->v_inode.i_mode) #define VN_ISCHR(vp) S_ISCHR((vp)->v_inode.i_mode) #define VN_ISBLK(vp) S_ISBLK((vp)->v_inode.i_mode) #define VNODE_POSITION_BASE BHV_POSITION_BASE /* chain bottom */ #define VNODE_POSITION_TOP BHV_POSITION_TOP /* chain top */ #define VNODE_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */ typedef enum { VN_BHV_UNKNOWN, /* not specified */ VN_BHV_XFS, /* xfs */ VN_BHV_DM, /* data migration */ VN_BHV_QM, /* quota manager */ VN_BHV_IO, /* IO path */ VN_BHV_END /* housekeeping end-of-range */ } vn_bhv_t; #define VNODE_POSITION_XFS (VNODE_POSITION_BASE) #define VNODE_POSITION_DM (VNODE_POSITION_BASE+10) #define VNODE_POSITION_QM (VNODE_POSITION_BASE+20) #define VNODE_POSITION_IO (VNODE_POSITION_BASE+30) /* * Macros for dealing with the behavior descriptor inside of the vnode. */ #define BHV_TO_VNODE(bdp) ((bhv_vnode_t *)BHV_VOBJ(bdp)) #define BHV_TO_VNODE_NULL(bdp) ((bhv_vnode_t *)BHV_VOBJNULL(bdp)) #define VN_BHV_HEAD(vp) ((bhv_head_t *)(&((vp)->v_bh))) #define vn_bhv_head_init(bhp,name) bhv_head_init(bhp,name) #define vn_bhv_remove(bhp,bdp) bhv_remove(bhp,bdp) /* * Vnode to Linux inode mapping. */ static inline struct bhv_vnode *vn_from_inode(struct inode *inode) { return container_of(inode, bhv_vnode_t, v_inode); } static inline struct inode *vn_to_inode(struct bhv_vnode *vnode) { return &vnode->v_inode; } /* * 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 bhv_vop_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 /* * Values for the cmd code given to vop_vnode_change. */ typedef enum bhv_vchange { VCHANGE_FLAGS_FRLOCKS = 0, VCHANGE_FLAGS_ENF_LOCKING = 1, VCHANGE_FLAGS_TRUNCATED = 2, VCHANGE_FLAGS_PAGE_DIRTY = 3, VCHANGE_FLAGS_IOEXCL_COUNT = 4 } bhv_vchange_t; typedef enum { L_FALSE, L_TRUE } lastclose_t; typedef int (*vop_open_t)(bhv_desc_t *, struct cred *); typedef int (*vop_close_t)(bhv_desc_t *, int, lastclose_t, struct cred *); typedef ssize_t (*vop_read_t)(bhv_desc_t *, struct kiocb *, const struct iovec *, unsigned int, loff_t *, int, struct cred *); typedef ssize_t (*vop_write_t)(bhv_desc_t *, struct kiocb *, const struct iovec *, unsigned int, loff_t *, int, struct cred *); typedef ssize_t (*vop_sendfile_t)(bhv_desc_t *, struct file *, loff_t *, int, size_t, read_actor_t, void *, struct cred *); typedef ssize_t (*vop_splice_read_t)(bhv_desc_t *, struct file *, loff_t *, struct pipe_inode_info *, size_t, int, int, struct cred *); typedef ssize_t (*vop_splice_write_t)(bhv_desc_t *, struct pipe_inode_info *, struct file *, loff_t *, size_t, int, int, struct cred *); typedef int (*vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *, int, unsigned int, void __user *); typedef int (*vop_getattr_t)(bhv_desc_t *, struct bhv_vattr *, int, struct cred *); typedef int (*vop_setattr_t)(bhv_desc_t *, struct bhv_vattr *, int, struct cred *); typedef int (*vop_access_t)(bhv_desc_t *, int, struct cred *); typedef int (*vop_lookup_t)(bhv_desc_t *, bhv_vname_t *, bhv_vnode_t **, int, bhv_vnode_t *, struct cred *); typedef int (*vop_create_t)(bhv_desc_t *, bhv_vname_t *, struct bhv_vattr *, bhv_vnode_t **, struct cred *); typedef int (*vop_remove_t)(bhv_desc_t *, bhv_vname_t *, struct cred *); typedef int (*vop_link_t)(bhv_desc_t *, bhv_vnode_t *, bhv_vname_t *, struct cred *); typedef int (*vop_rename_t)(bhv_desc_t *, bhv_vname_t *, bhv_vnode_t *, bhv_vname_t *, struct cred *); typedef int (*vop_mkdir_t)(bhv_desc_t *, bhv_vname_t *, struct bhv_vattr *, bhv_vnode_t **, struct cred *); typedef int (*vop_rmdir_t)(bhv_desc_t *, bhv_vname_t *, struct cred *); typedef int (*vop_readdir_t)(bhv_desc_t *, struct uio *, struct cred *, int *); typedef int (*vop_symlink_t)(bhv_desc_t *, bhv_vname_t *, struct bhv_vattr*, char *, bhv_vnode_t **, struct cred *); typedef int (*vop_readlink_t)(bhv_desc_t *, struct uio *, int, struct cred *); typedef int (*vop_fsync_t)(bhv_desc_t *, int, struct cred *, xfs_off_t, xfs_off_t); typedef int (*vop_inactive_t)(bhv_desc_t *, struct cred *); typedef int (*vop_fid2_t)(bhv_desc_t *, struct fid *); typedef int (*vop_release_t)(bhv_desc_t *); typedef int (*vop_rwlock_t)(bhv_desc_t *, bhv_vrwlock_t); typedef void (*vop_rwunlock_t)(bhv_desc_t *, bhv_vrwlock_t); typedef int (*vop_bmap_t)(bhv_desc_t *, xfs_off_t, ssize_t, int, struct xfs_iomap *, int *); typedef int (*vop_reclaim_t)(bhv_desc_t *); typedef int (*vop_attr_get_t)(bhv_desc_t *, const char *, char *, int *, int, struct cred *); typedef int (*vop_attr_set_t)(bhv_desc_t *, const char *, char *, int, int, struct cred *); typedef int (*vop_attr_remove_t)(bhv_desc_t *, const char *, int, struct cred *); typedef int (*vop_attr_list_t)(bhv_desc_t *, char *, int, int, struct attrlist_cursor_kern *, struct cred *); typedef void (*vop_link_removed_t)(bhv_desc_t *, bhv_vnode_t *, int); typedef void (*vop_vnode_change_t)(bhv_desc_t *, bhv_vchange_t, __psint_t); typedef void (*vop_ptossvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int); typedef void (*vop_pflushinvalvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int); typedef int (*vop_pflushvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, uint64_t, int); typedef int (*vop_iflush_t)(bhv_desc_t *, int); typedef struct bhv_vnodeops { bhv_position_t vn_position; /* position within behavior chain */ vop_open_t vop_open; vop_close_t vop_close; vop_read_t vop_read; vop_write_t vop_write; vop_sendfile_t vop_sendfile; vop_splice_read_t vop_splice_read; vop_splice_write_t vop_splice_write; vop_ioctl_t vop_ioctl; vop_getattr_t vop_getattr; vop_setattr_t vop_setattr; vop_access_t vop_access; vop_lookup_t vop_lookup; vop_create_t vop_create; vop_remove_t vop_remove; vop_link_t vop_link; vop_rename_t vop_rename; vop_mkdir_t vop_mkdir; vop_rmdir_t vop_rmdir; vop_readdir_t vop_readdir; vop_symlink_t vop_symlink; vop_readlink_t vop_readlink; vop_fsync_t vop_fsync; vop_inactive_t vop_inactive; vop_fid2_t vop_fid2; vop_rwlock_t vop_rwlock; vop_rwunlock_t vop_rwunlock; vop_bmap_t vop_bmap; vop_reclaim_t vop_reclaim; vop_attr_get_t vop_attr_get; vop_attr_set_t vop_attr_set; vop_attr_remove_t vop_attr_remove; vop_attr_list_t vop_attr_list; vop_link_removed_t vop_link_removed; vop_vnode_change_t vop_vnode_change; vop_ptossvp_t vop_tosspages; vop_pflushinvalvp_t vop_flushinval_pages; vop_pflushvp_t vop_flush_pages; vop_release_t vop_release; vop_iflush_t vop_iflush; } bhv_vnodeops_t; /* * Virtual node operations, operating from head bhv. */ #define VNHEAD(vp) ((vp)->v_bh.bh_first) #define VOP(op, vp) (*((bhv_vnodeops_t *)VNHEAD(vp)->bd_ops)->op) #define bhv_vop_open(vp, cr) VOP(vop_open, vp)(VNHEAD(vp),cr) #define bhv_vop_close(vp, f,last,cr) VOP(vop_close, vp)(VNHEAD(vp),f,last,cr) #define bhv_vop_read(vp,file,iov,segs,offset,ioflags,cr) \ VOP(vop_read, vp)(VNHEAD(vp),file,iov,segs,offset,ioflags,cr) #define bhv_vop_write(vp,file,iov,segs,offset,ioflags,cr) \ VOP(vop_write, vp)(VNHEAD(vp),file,iov,segs,offset,ioflags,cr) #define bhv_vop_sendfile(vp,f,off,ioflags,cnt,act,targ,cr) \ VOP(vop_sendfile, vp)(VNHEAD(vp),f,off,ioflags,cnt,act,targ,cr) #define bhv_vop_splice_read(vp,f,o,pipe,cnt,fl,iofl,cr) \ VOP(vop_splice_read, vp)(VNHEAD(vp),f,o,pipe,cnt,fl,iofl,cr) #define bhv_vop_splice_write(vp,f,o,pipe,cnt,fl,iofl,cr) \ VOP(vop_splice_write, vp)(VNHEAD(vp),f,o,pipe,cnt,fl,iofl,cr) #define bhv_vop_bmap(vp,of,sz,rw,b,n) \ VOP(vop_bmap, vp)(VNHEAD(vp),of,sz,rw,b,n) #define bhv_vop_getattr(vp, vap,f,cr) \ VOP(vop_getattr, vp)(VNHEAD(vp), vap,f,cr) #define bhv_vop_setattr(vp, vap,f,cr) \ VOP(vop_setattr, vp)(VNHEAD(vp), vap,f,cr) #define bhv_vop_access(vp, mode,cr) VOP(vop_access, vp)(VNHEAD(vp), mode,cr) #define bhv_vop_lookup(vp,d,vpp,f,rdir,cr) \ VOP(vop_lookup, vp)(VNHEAD(vp),d,vpp,f,rdir,cr) #define bhv_vop_create(dvp,d,vap,vpp,cr) \ VOP(vop_create, dvp)(VNHEAD(dvp),d,vap,vpp,cr) #define bhv_vop_remove(dvp,d,cr) VOP(vop_remove, dvp)(VNHEAD(dvp),d,cr) #define bhv_vop_link(dvp,fvp,d,cr) VOP(vop_link, dvp)(VNHEAD(dvp),fvp,d,cr) #define bhv_vop_rename(fvp,fnm,tdvp,tnm,cr) \ VOP(vop_rename, fvp)(VNHEAD(fvp),fnm,tdvp,tnm,cr) #define bhv_vop_mkdir(dp,d,vap,vpp,cr) \ VOP(vop_mkdir, dp)(VNHEAD(dp),d,vap,vpp,cr) #define bhv_vop_rmdir(dp,d,cr) VOP(vop_rmdir, dp)(VNHEAD(dp),d,cr) #define bhv_vop_readdir(vp,uiop,cr,eofp) \ VOP(vop_readdir, vp)(VNHEAD(vp),uiop,cr,eofp) #define bhv_vop_symlink(dvp,d,vap,tnm,vpp,cr) \ VOP(vop_symlink, dvp)(VNHEAD(dvp),d,vap,tnm,vpp,cr) #define bhv_vop_readlink(vp,uiop,fl,cr) \ VOP(vop_readlink, vp)(VNHEAD(vp),uiop,fl,cr) #define bhv_vop_fsync(vp,f,cr,b,e) VOP(vop_fsync, vp)(VNHEAD(vp),f,cr,b,e) #define bhv_vop_inactive(vp,cr) VOP(vop_inactive, vp)(VNHEAD(vp),cr) #define bhv_vop_release(vp) VOP(vop_release, vp)(VNHEAD(vp)) #define bhv_vop_fid2(vp,fidp) VOP(vop_fid2, vp)(VNHEAD(vp),fidp) #define bhv_vop_rwlock(vp,i) VOP(vop_rwlock, vp)(VNHEAD(vp),i) #define bhv_vop_rwlock_try(vp,i) VOP(vop_rwlock, vp)(VNHEAD(vp),i) #define bhv_vop_rwunlock(vp,i) VOP(vop_rwunlock, vp)(VNHEAD(vp),i) #define bhv_vop_frlock(vp,c,fl,flags,offset,fr) \ VOP(vop_frlock, vp)(VNHEAD(vp),c,fl,flags,offset,fr) #define bhv_vop_reclaim(vp) VOP(vop_reclaim, vp)(VNHEAD(vp)) #define bhv_vop_attr_get(vp, name, val, vallenp, fl, cred) \ VOP(vop_attr_get, vp)(VNHEAD(vp),name,val,vallenp,fl,cred) #define bhv_vop_attr_set(vp, name, val, vallen, fl, cred) \ VOP(vop_attr_set, vp)(VNHEAD(vp),name,val,vallen,fl,cred) #define bhv_vop_attr_remove(vp, name, flags, cred) \ VOP(vop_attr_remove, vp)(VNHEAD(vp),name,flags,cred) #define bhv_vop_attr_list(vp, buf, buflen, fl, cursor, cred) \ VOP(vop_attr_list, vp)(VNHEAD(vp),buf,buflen,fl,cursor,cred) #define bhv_vop_link_removed(vp, dvp, linkzero) \ VOP(vop_link_removed, vp)(VNHEAD(vp), dvp, linkzero) #define bhv_vop_vnode_change(vp, cmd, val) \ VOP(vop_vnode_change, vp)(VNHEAD(vp), cmd, val) #define bhv_vop_toss_pages(vp, first, last, fiopt) \ VOP(vop_tosspages, vp)(VNHEAD(vp), first, last, fiopt) #define bhv_vop_flushinval_pages(vp, first, last, fiopt) \ VOP(vop_flushinval_pages, vp)(VNHEAD(vp),first,last,fiopt) #define bhv_vop_flush_pages(vp, first, last, flags, fiopt) \ VOP(vop_flush_pages, vp)(VNHEAD(vp),first,last,flags,fiopt) #define bhv_vop_ioctl(vp, inode, filp, fl, cmd, arg) \ VOP(vop_ioctl, vp)(VNHEAD(vp),inode,filp,fl,cmd,arg) #define bhv_vop_iflush(vp, flags) VOP(vop_iflush, vp)(VNHEAD(vp), flags) /* * 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(struct bhv_vnode *); extern int __vn_revalidate(struct bhv_vnode *, bhv_vattr_t *); extern void vn_revalidate_core(struct bhv_vnode *, bhv_vattr_t *); extern void vn_iowait(struct bhv_vnode *vp); extern void vn_iowake(struct bhv_vnode *vp); extern void vn_ioerror(struct bhv_vnode *vp, int error, char *f, int l); static inline int vn_count(struct bhv_vnode *vp) { return atomic_read(&vn_to_inode(vp)->i_count); } /* * Vnode reference counting functions (and macros for compatibility). */ extern bhv_vnode_t *vn_hold(struct bhv_vnode *); #if defined(XFS_VNODE_TRACE) #define VN_HOLD(vp) \ ((void)vn_hold(vp), \ vn_trace_hold(vp, __FILE__, __LINE__, (inst_t *)__return_address)) #define VN_RELE(vp) \ (vn_trace_rele(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 struct bhv_vnode *vn_grab(struct bhv_vnode *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)) /* * Vnode spinlock manipulation. */ #define VN_LOCK(vp) mutex_spinlock(&(vp)->v_lock) #define VN_UNLOCK(vp, s) mutex_spinunlock(&(vp)->v_lock, s) STATIC_INLINE void vn_flagset(struct bhv_vnode *vp, uint flag) { spin_lock(&vp->v_lock); vp->v_flag |= flag; spin_unlock(&vp->v_lock); } STATIC_INLINE uint vn_flagclr(struct bhv_vnode *vp, uint flag) { uint cleared; spin_lock(&vp->v_lock); cleared = (vp->v_flag & flag); vp->v_flag &= ~flag; spin_unlock(&vp->v_lock); return cleared; } #define VMODIFY(vp) vn_flagset(vp, VMODIFIED) #define VUNMODIFY(vp) vn_flagclr(vp, VMODIFIED) #define VTRUNCATE(vp) vn_flagset(vp, VTRUNCATED) #define VUNTRUNCATE(vp) vn_flagclr(vp, VTRUNCATED) /* * Dealing with bad inodes */ static inline void vn_mark_bad(struct bhv_vnode *vp) { make_bad_inode(vn_to_inode(vp)); } static inline int VN_BAD(struct bhv_vnode *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->v_inode.i_atime.tv_sec; bs_atime->tv_nsec = vp->v_inode.i_atime.tv_nsec; } static inline void vn_atime_to_timespec(bhv_vnode_t *vp, struct timespec *ts) { *ts = vp->v_inode.i_atime; } static inline void vn_atime_to_time_t(bhv_vnode_t *vp, time_t *tt) { *tt = vp->v_inode.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) #define VN_TRUNC(vp) ((vp)->v_flag & VTRUNCATED) /* * 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_VNODE_TRACE) #define VNODE_TRACE_SIZE 16 /* number of trace entries */ #define VNODE_KTRACE_ENTRY 1 #define VNODE_KTRACE_EXIT 2 #define VNODE_KTRACE_HOLD 3 #define VNODE_KTRACE_REF 4 #define VNODE_KTRACE_RELE 5 extern void vn_trace_entry(struct bhv_vnode *, const char *, inst_t *); extern void vn_trace_exit(struct bhv_vnode *, const char *, inst_t *); extern void vn_trace_hold(struct bhv_vnode *, char *, int, inst_t *); extern void vn_trace_ref(struct bhv_vnode *, char *, int, inst_t *); extern void vn_trace_rele(struct bhv_vnode *, char *, int, inst_t *); #define VN_TRACE(vp) \ vn_trace_ref(vp, __FILE__, __LINE__, (inst_t *)__return_address) #else #define vn_trace_entry(a,b,c) #define vn_trace_exit(a,b,c) #define vn_trace_hold(a,b,c,d) #define vn_trace_ref(a,b,c,d) #define vn_trace_rele(a,b,c,d) #define VN_TRACE(vp) #endif #endif /* __XFS_VNODE_H__ */