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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_CLNT_H__
19#define __XFS_CLNT_H__
20
21/*
22 * XFS arguments structure, constructed from the arguments we
23 * are passed via the mount system call.
24 *
25 * NOTE: The mount system call is handled differently between
26 * Linux and IRIX. In IRIX we worked work with a binary data
27 * structure coming in across the syscall interface from user
28 * space (the mount userspace knows about each filesystem type
29 * and the set of valid options for it, and converts the users
30 * argument string into a binary structure _before_ making the
31 * system call), and the ABI issues that this implies.
32 *
33 * In Linux, we are passed a comma separated set of options;
34 * ie. a NULL terminated string of characters. Userspace mount
35 * code does not have any knowledge of mount options expected by
36 * each filesystem type and so each filesystem parses its mount
37 * options in kernel space.
38 *
39 * For the Linux port, we kept this structure pretty much intact
40 * and use it internally (because the existing code groks it).
41 */
42struct xfs_mount_args {
43 int flags; /* flags -> see XFSMNT_... macros below */
Nathan Scotte718eeb42005-11-02 15:09:22 +110044 int flags2; /* flags -> see XFSMNT2_... macros below */
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 int logbufs; /* Number of log buffers, -1 to default */
46 int logbufsize; /* Size of log buffers, -1 to default */
47 char fsname[MAXNAMELEN+1]; /* data device name */
48 char rtname[MAXNAMELEN+1]; /* realtime device filename */
49 char logname[MAXNAMELEN+1]; /* journal device filename */
50 char mtpt[MAXNAMELEN+1]; /* filesystem mount point */
51 int sunit; /* stripe unit (BBs) */
52 int swidth; /* stripe width (BBs), multiple of sunit */
53 uchar_t iosizelog; /* log2 of the preferred I/O size */
54 int ihashsize; /* inode hash table size (buckets) */
55};
56
57/*
Nathan Scotte718eeb42005-11-02 15:09:22 +110058 * XFS mount option flags -- args->flags1
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 */
Nathan Scottaf4e34a2005-11-02 10:35:46 +110060#define XFSMNT_COMPAT_ATTR 0x00000001 /* do not use ATTR2 format */
Linus Torvalds1da177e2005-04-16 15:20:36 -070061#define XFSMNT_WSYNC 0x00000002 /* safe mode nfs mount
62 * compatible */
63#define XFSMNT_INO64 0x00000004 /* move inode numbers up
64 * past 2^32 */
65#define XFSMNT_UQUOTA 0x00000008 /* user quota accounting */
66#define XFSMNT_PQUOTA 0x00000010 /* IRIX prj quota accounting */
67#define XFSMNT_UQUOTAENF 0x00000020 /* user quota limit
68 * enforcement */
69#define XFSMNT_PQUOTAENF 0x00000040 /* IRIX project quota limit
70 * enforcement */
71#define XFSMNT_NOATIME 0x00000100 /* don't modify access
72 * times on reads */
73#define XFSMNT_NOALIGN 0x00000200 /* don't allocate at
74 * stripe boundaries*/
75#define XFSMNT_RETERR 0x00000400 /* return error to user */
76#define XFSMNT_NORECOVERY 0x00000800 /* no recovery, implies
77 * read-only mount */
78#define XFSMNT_SHARED 0x00001000 /* shared XFS mount */
79#define XFSMNT_IOSIZE 0x00002000 /* optimize for I/O size */
80#define XFSMNT_OSYNCISOSYNC 0x00004000 /* o_sync is REALLY o_sync */
Nathan Scotte718eeb42005-11-02 15:09:22 +110081 /* (osyncisdsync is default) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070082#define XFSMNT_32BITINODES 0x00200000 /* restrict inodes to 32
83 * bits of address space */
84#define XFSMNT_GQUOTA 0x00400000 /* group quota accounting */
85#define XFSMNT_GQUOTAENF 0x00800000 /* group quota limit
86 * enforcement */
87#define XFSMNT_NOUUID 0x01000000 /* Ignore fs uuid */
88#define XFSMNT_DMAPI 0x02000000 /* enable dmapi/xdsm */
Christoph Hellwigf538d4d2005-11-02 10:26:59 +110089#define XFSMNT_BARRIER 0x04000000 /* use write barriers */
Linus Torvalds1da177e2005-04-16 15:20:36 -070090#define XFSMNT_IDELETE 0x08000000 /* inode cluster delete */
91#define XFSMNT_SWALLOC 0x10000000 /* turn on stripe width
92 * allocation */
93#define XFSMNT_IHASHSIZE 0x20000000 /* inode hash table size */
94#define XFSMNT_DIRSYNC 0x40000000 /* sync creat,link,unlink,rename
95 * symlink,mkdir,rmdir,mknod */
Nathan Scotte718eeb42005-11-02 15:09:22 +110096#define XFSMNT_FLAGS2 0x80000000 /* more flags set in flags2 */
97
98/*
99 * XFS mount option flags -- args->flags2
100 */
101#define XFSMNT2_COMPAT_IOSIZE 0x00000001 /* don't report large preferred
102 * I/O size in stat(2) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
104#endif /* __XFS_CLNT_H__ */