7c12f29650
features2 fields. Previously, mounting with noattr2 failed to achieve anything because although it cleared the attr2 mount flag, it would set it again as soon as it processed the superblock fields. The fix now has an explicit noattr2 flag and uses it later to fix up the versionnum and features2 fields. SGI-PV: 980021 SGI-Modid: xfs-linux-melb:xfs-kern:31003a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
105 lines
4.5 KiB
C
105 lines
4.5 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_CLNT_H__
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#define __XFS_CLNT_H__
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/*
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* XFS arguments structure, constructed from the arguments we
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* are passed via the mount system call.
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*
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* NOTE: The mount system call is handled differently between
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* Linux and IRIX. In IRIX we worked work with a binary data
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* structure coming in across the syscall interface from user
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* space (the mount userspace knows about each filesystem type
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* and the set of valid options for it, and converts the users
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* argument string into a binary structure _before_ making the
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* system call), and the ABI issues that this implies.
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*
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* In Linux, we are passed a comma separated set of options;
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* ie. a NULL terminated string of characters. Userspace mount
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* code does not have any knowledge of mount options expected by
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* each filesystem type and so each filesystem parses its mount
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* options in kernel space.
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*
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* For the Linux port, we kept this structure pretty much intact
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* and use it internally (because the existing code groks it).
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*/
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struct xfs_mount_args {
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int flags; /* flags -> see XFSMNT_... macros below */
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int flags2; /* flags -> see XFSMNT2_... macros below */
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int logbufs; /* Number of log buffers, -1 to default */
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int logbufsize; /* Size of log buffers, -1 to default */
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char fsname[MAXNAMELEN+1]; /* data device name */
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char rtname[MAXNAMELEN+1]; /* realtime device filename */
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char logname[MAXNAMELEN+1]; /* journal device filename */
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char mtpt[MAXNAMELEN+1]; /* filesystem mount point */
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int sunit; /* stripe unit (BBs) */
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int swidth; /* stripe width (BBs), multiple of sunit */
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uchar_t iosizelog; /* log2 of the preferred I/O size */
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int ihashsize; /* inode hash table size (buckets) */
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};
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/*
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* XFS mount option flags -- args->flags1
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*/
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#define XFSMNT_ATTR2 0x00000001 /* allow ATTR2 EA format */
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#define XFSMNT_WSYNC 0x00000002 /* safe mode nfs mount
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* compatible */
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#define XFSMNT_INO64 0x00000004 /* move inode numbers up
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* past 2^32 */
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#define XFSMNT_UQUOTA 0x00000008 /* user quota accounting */
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#define XFSMNT_PQUOTA 0x00000010 /* IRIX prj quota accounting */
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#define XFSMNT_UQUOTAENF 0x00000020 /* user quota limit
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* enforcement */
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#define XFSMNT_PQUOTAENF 0x00000040 /* IRIX project quota limit
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* enforcement */
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#define XFSMNT_QUIET 0x00000080 /* don't report mount errors */
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#define XFSMNT_NOALIGN 0x00000200 /* don't allocate at
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* stripe boundaries*/
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#define XFSMNT_RETERR 0x00000400 /* return error to user */
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#define XFSMNT_NORECOVERY 0x00000800 /* no recovery, implies
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* read-only mount */
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#define XFSMNT_SHARED 0x00001000 /* shared XFS mount */
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#define XFSMNT_IOSIZE 0x00002000 /* optimize for I/O size */
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#define XFSMNT_OSYNCISOSYNC 0x00004000 /* o_sync is REALLY o_sync */
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/* (osyncisdsync is default) */
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#define XFSMNT_NOATTR2 0x00008000 /* turn off ATTR2 EA format */
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#define XFSMNT_32BITINODES 0x00200000 /* restrict inodes to 32
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* bits of address space */
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#define XFSMNT_GQUOTA 0x00400000 /* group quota accounting */
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#define XFSMNT_GQUOTAENF 0x00800000 /* group quota limit
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* enforcement */
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#define XFSMNT_NOUUID 0x01000000 /* Ignore fs uuid */
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#define XFSMNT_DMAPI 0x02000000 /* enable dmapi/xdsm */
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#define XFSMNT_BARRIER 0x04000000 /* use write barriers */
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#define XFSMNT_IKEEP 0x08000000 /* inode cluster delete */
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#define XFSMNT_SWALLOC 0x10000000 /* turn on stripe width
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* allocation */
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#define XFSMNT_DIRSYNC 0x40000000 /* sync creat,link,unlink,rename
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* symlink,mkdir,rmdir,mknod */
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#define XFSMNT_FLAGS2 0x80000000 /* more flags set in flags2 */
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/*
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* XFS mount option flags -- args->flags2
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*/
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#define XFSMNT2_COMPAT_IOSIZE 0x00000001 /* don't report large preferred
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* I/O size in stat(2) */
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#define XFSMNT2_FILESTREAMS 0x00000002 /* enable the filestreams
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* allocator */
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#endif /* __XFS_CLNT_H__ */
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