126468b115
We can just use xfs_ilock/xfs_iunlock instead and get rid of the ugly bhv_vrwlock_t. SGI-PV: 976035 SGI-Modid: xfs-linux-melb:xfs-kern:30533a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
309 lines
9.6 KiB
C
309 lines
9.6 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_VNODE_H__
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#define __XFS_VNODE_H__
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struct file;
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struct bhv_vattr;
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struct xfs_iomap;
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struct attrlist_cursor_kern;
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typedef struct dentry bhv_vname_t;
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typedef __u64 bhv_vnumber_t;
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typedef struct inode bhv_vnode_t;
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#define VN_ISLNK(vp) S_ISLNK((vp)->i_mode)
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#define VN_ISREG(vp) S_ISREG((vp)->i_mode)
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#define VN_ISDIR(vp) S_ISDIR((vp)->i_mode)
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#define VN_ISCHR(vp) S_ISCHR((vp)->i_mode)
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#define VN_ISBLK(vp) S_ISBLK((vp)->i_mode)
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/*
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* Vnode to Linux inode mapping.
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*/
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static inline bhv_vnode_t *vn_from_inode(struct inode *inode)
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{
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return inode;
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}
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static inline struct inode *vn_to_inode(bhv_vnode_t *vnode)
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{
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return vnode;
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}
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/*
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* Return values for xfs_inactive. A return value of
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* VN_INACTIVE_NOCACHE implies that the file system behavior
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* has disassociated its state and bhv_desc_t from the vnode.
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*/
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#define VN_INACTIVE_CACHE 0
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#define VN_INACTIVE_NOCACHE 1
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/*
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* Flags for read/write calls - same values as IRIX
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*/
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#define IO_ISAIO 0x00001 /* don't wait for completion */
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#define IO_ISDIRECT 0x00004 /* bypass page cache */
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#define IO_INVIS 0x00020 /* don't update inode timestamps */
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/*
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* Flags for xfs_inode_flush
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*/
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#define FLUSH_SYNC 1 /* wait for flush to complete */
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/*
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* Flush/Invalidate options for vop_toss/flush/flushinval_pages.
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*/
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#define FI_NONE 0 /* none */
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#define FI_REMAPF 1 /* Do a remapf prior to the operation */
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#define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
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Prevent VM access to the pages until
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the operation completes. */
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/*
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* Vnode attributes. va_mask indicates those attributes the caller
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* wants to set or extract.
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*/
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typedef struct bhv_vattr {
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int va_mask; /* bit-mask of attributes present */
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mode_t va_mode; /* file access mode and type */
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xfs_nlink_t va_nlink; /* number of references to file */
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uid_t va_uid; /* owner user id */
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gid_t va_gid; /* owner group id */
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xfs_ino_t va_nodeid; /* file id */
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xfs_off_t va_size; /* file size in bytes */
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u_long va_blocksize; /* blocksize preferred for i/o */
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struct timespec va_atime; /* time of last access */
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struct timespec va_mtime; /* time of last modification */
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struct timespec va_ctime; /* time file changed */
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u_int va_gen; /* generation number of file */
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xfs_dev_t va_rdev; /* device the special file represents */
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__int64_t va_nblocks; /* number of blocks allocated */
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u_long va_xflags; /* random extended file flags */
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u_long va_extsize; /* file extent size */
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u_long va_nextents; /* number of extents in file */
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u_long va_anextents; /* number of attr extents in file */
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prid_t va_projid; /* project id */
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} bhv_vattr_t;
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/*
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* setattr or getattr attributes
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*/
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#define XFS_AT_TYPE 0x00000001
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#define XFS_AT_MODE 0x00000002
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#define XFS_AT_UID 0x00000004
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#define XFS_AT_GID 0x00000008
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#define XFS_AT_FSID 0x00000010
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#define XFS_AT_NODEID 0x00000020
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#define XFS_AT_NLINK 0x00000040
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#define XFS_AT_SIZE 0x00000080
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#define XFS_AT_ATIME 0x00000100
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#define XFS_AT_MTIME 0x00000200
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#define XFS_AT_CTIME 0x00000400
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#define XFS_AT_RDEV 0x00000800
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#define XFS_AT_BLKSIZE 0x00001000
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#define XFS_AT_NBLOCKS 0x00002000
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#define XFS_AT_VCODE 0x00004000
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#define XFS_AT_MAC 0x00008000
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#define XFS_AT_UPDATIME 0x00010000
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#define XFS_AT_UPDMTIME 0x00020000
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#define XFS_AT_UPDCTIME 0x00040000
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#define XFS_AT_ACL 0x00080000
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#define XFS_AT_CAP 0x00100000
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#define XFS_AT_INF 0x00200000
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#define XFS_AT_XFLAGS 0x00400000
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#define XFS_AT_EXTSIZE 0x00800000
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#define XFS_AT_NEXTENTS 0x01000000
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#define XFS_AT_ANEXTENTS 0x02000000
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#define XFS_AT_PROJID 0x04000000
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#define XFS_AT_SIZE_NOPERM 0x08000000
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#define XFS_AT_GENCOUNT 0x10000000
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#define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
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XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
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XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
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XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
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XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
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XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)
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#define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
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XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
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XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
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XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID)
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#define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME)
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#define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME)
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#define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\
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XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\
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XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT)
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/*
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* Modes.
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*/
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#define VSUID S_ISUID /* set user id on execution */
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#define VSGID S_ISGID /* set group id on execution */
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#define VSVTX S_ISVTX /* save swapped text even after use */
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#define VREAD S_IRUSR /* read, write, execute permissions */
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#define VWRITE S_IWUSR
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#define VEXEC S_IXUSR
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#define MODEMASK S_IALLUGO /* mode bits plus permission bits */
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/*
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* Check whether mandatory file locking is enabled.
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*/
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#define MANDLOCK(vp, mode) \
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(VN_ISREG(vp) && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
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extern void vn_init(void);
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extern int vn_revalidate(bhv_vnode_t *);
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/*
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* Yeah, these don't take vnode anymore at all, all this should be
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* cleaned up at some point.
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*/
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extern void vn_iowait(struct xfs_inode *ip);
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extern void vn_iowake(struct xfs_inode *ip);
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extern void vn_ioerror(struct xfs_inode *ip, int error, char *f, int l);
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static inline int vn_count(bhv_vnode_t *vp)
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{
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return atomic_read(&vn_to_inode(vp)->i_count);
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}
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/*
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* Vnode reference counting functions (and macros for compatibility).
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*/
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extern bhv_vnode_t *vn_hold(bhv_vnode_t *);
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#if defined(XFS_INODE_TRACE)
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#define VN_HOLD(vp) \
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((void)vn_hold(vp), \
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xfs_itrace_hold(xfs_vtoi(vp), __FILE__, __LINE__, (inst_t *)__return_address))
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#define VN_RELE(vp) \
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(xfs_itrace_rele(xfs_vtoi(vp), __FILE__, __LINE__, (inst_t *)__return_address), \
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iput(vn_to_inode(vp)))
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#else
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#define VN_HOLD(vp) ((void)vn_hold(vp))
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#define VN_RELE(vp) (iput(vn_to_inode(vp)))
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#endif
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static inline bhv_vnode_t *vn_grab(bhv_vnode_t *vp)
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{
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struct inode *inode = igrab(vn_to_inode(vp));
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return inode ? vn_from_inode(inode) : NULL;
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}
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/*
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* Vname handling macros.
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*/
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#define VNAME(dentry) ((char *) (dentry)->d_name.name)
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#define VNAMELEN(dentry) ((dentry)->d_name.len)
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#define VNAME_TO_INODE(dentry) (XFS_I((dentry)->d_inode))
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/*
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* Dealing with bad inodes
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*/
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static inline int VN_BAD(bhv_vnode_t *vp)
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{
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return is_bad_inode(vn_to_inode(vp));
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}
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/*
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* Extracting atime values in various formats
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*/
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static inline void vn_atime_to_bstime(bhv_vnode_t *vp, xfs_bstime_t *bs_atime)
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{
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bs_atime->tv_sec = vp->i_atime.tv_sec;
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bs_atime->tv_nsec = vp->i_atime.tv_nsec;
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}
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static inline void vn_atime_to_timespec(bhv_vnode_t *vp, struct timespec *ts)
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{
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*ts = vp->i_atime;
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}
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static inline void vn_atime_to_time_t(bhv_vnode_t *vp, time_t *tt)
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{
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*tt = vp->i_atime.tv_sec;
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}
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/*
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* Some useful predicates.
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*/
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#define VN_MAPPED(vp) mapping_mapped(vn_to_inode(vp)->i_mapping)
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#define VN_CACHED(vp) (vn_to_inode(vp)->i_mapping->nrpages)
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#define VN_DIRTY(vp) mapping_tagged(vn_to_inode(vp)->i_mapping, \
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PAGECACHE_TAG_DIRTY)
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/*
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* Flags to vop_setattr/getattr.
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*/
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#define ATTR_UTIME 0x01 /* non-default utime(2) request */
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#define ATTR_DMI 0x08 /* invocation from a DMI function */
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#define ATTR_LAZY 0x80 /* set/get attributes lazily */
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#define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */
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#define ATTR_NOLOCK 0x200 /* Don't grab any conflicting locks */
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#define ATTR_NOSIZETOK 0x400 /* Don't get the SIZE token */
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/*
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* Flags to vop_fsync/reclaim.
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*/
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#define FSYNC_NOWAIT 0 /* asynchronous flush */
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#define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */
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#define FSYNC_INVAL 0x2 /* flush and invalidate cached data */
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#define FSYNC_DATA 0x4 /* synchronous fsync of data only */
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/*
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* Tracking vnode activity.
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*/
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#if defined(XFS_INODE_TRACE)
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#define INODE_TRACE_SIZE 16 /* number of trace entries */
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#define INODE_KTRACE_ENTRY 1
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#define INODE_KTRACE_EXIT 2
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#define INODE_KTRACE_HOLD 3
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#define INODE_KTRACE_REF 4
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#define INODE_KTRACE_RELE 5
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extern void _xfs_itrace_entry(struct xfs_inode *, const char *, inst_t *);
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extern void _xfs_itrace_exit(struct xfs_inode *, const char *, inst_t *);
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extern void xfs_itrace_hold(struct xfs_inode *, char *, int, inst_t *);
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extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *);
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extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *);
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#define xfs_itrace_entry(ip) \
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_xfs_itrace_entry(ip, __FUNCTION__, (inst_t *)__return_address)
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#define xfs_itrace_exit(ip) \
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_xfs_itrace_exit(ip, __FUNCTION__, (inst_t *)__return_address)
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#define xfs_itrace_exit_tag(ip, tag) \
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_xfs_itrace_exit(ip, tag, (inst_t *)__return_address)
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#define xfs_itrace_ref(ip) \
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_xfs_itrace_ref(ip, __FILE__, __LINE__, (inst_t *)__return_address)
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#else
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#define xfs_itrace_entry(a)
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#define xfs_itrace_exit(a)
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#define xfs_itrace_exit_tag(a, b)
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#define xfs_itrace_hold(a, b, c, d)
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#define xfs_itrace_ref(a)
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#define xfs_itrace_rele(a, b, c, d)
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#endif
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#endif /* __XFS_VNODE_H__ */
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