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Diffstat (limited to 'fs/xfs/xfs_clnt.h')
| -rw-r--r-- | fs/xfs/xfs_clnt.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/fs/xfs/xfs_clnt.h b/fs/xfs/xfs_clnt.h new file mode 100644 index 00000000000..b3215ffe0be --- /dev/null +++ b/fs/xfs/xfs_clnt.h @@ -0,0 +1,110 @@ +/* + * 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 version 2 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. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ +#ifndef __XFS_CLNT_H__ +#define __XFS_CLNT_H__ + +/* + * XFS arguments structure, constructed from the arguments we + * are passed via the mount system call. + * + * NOTE: The mount system call is handled differently between + * Linux and IRIX. In IRIX we worked work with a binary data + * structure coming in across the syscall interface from user + * space (the mount userspace knows about each filesystem type + * and the set of valid options for it, and converts the users + * argument string into a binary structure _before_ making the + * system call), and the ABI issues that this implies. + * + * In Linux, we are passed a comma separated set of options; + * ie. a NULL terminated string of characters. Userspace mount + * code does not have any knowledge of mount options expected by + * each filesystem type and so each filesystem parses its mount + * options in kernel space. + * + * For the Linux port, we kept this structure pretty much intact + * and use it internally (because the existing code groks it). + */ +struct xfs_mount_args { + int flags; /* flags -> see XFSMNT_... macros below */ + int logbufs; /* Number of log buffers, -1 to default */ + int logbufsize; /* Size of log buffers, -1 to default */ + char fsname[MAXNAMELEN+1]; /* data device name */ + char rtname[MAXNAMELEN+1]; /* realtime device filename */ + char logname[MAXNAMELEN+1]; /* journal device filename */ + char mtpt[MAXNAMELEN+1]; /* filesystem mount point */ + int sunit; /* stripe unit (BBs) */ + int swidth; /* stripe width (BBs), multiple of sunit */ + uchar_t iosizelog; /* log2 of the preferred I/O size */ + int ihashsize; /* inode hash table size (buckets) */ +}; + +/* + * XFS mount option flags + */ +#define XFSMNT_CHKLOG 0x00000001 /* check log */ +#define XFSMNT_WSYNC 0x00000002 /* safe mode nfs mount + * compatible */ +#define XFSMNT_INO64 0x00000004 /* move inode numbers up + * past 2^32 */ +#define XFSMNT_UQUOTA 0x00000008 /* user quota accounting */ +#define XFSMNT_PQUOTA 0x00000010 /* IRIX prj quota accounting */ +#define XFSMNT_UQUOTAENF 0x00000020 /* user quota limit + * enforcement */ +#define XFSMNT_PQUOTAENF 0x00000040 /* IRIX project quota limit + * enforcement */ +#define XFSMNT_NOATIME 0x00000100 /* don't modify access + * times on reads */ +#define XFSMNT_NOALIGN 0x00000200 /* don't allocate at + * stripe boundaries*/ +#define XFSMNT_RETERR 0x00000400 /* return error to user */ +#define XFSMNT_NORECOVERY 0x00000800 /* no recovery, implies + * read-only mount */ +#define XFSMNT_SHARED 0x00001000 /* shared XFS mount */ +#define XFSMNT_IOSIZE 0x00002000 /* optimize for I/O size */ +#define XFSMNT_OSYNCISOSYNC 0x00004000 /* o_sync is REALLY o_sync */ + /* (osyncisdsync is now default) */ +#define XFSMNT_32BITINODES 0x00200000 /* restrict inodes to 32 + * bits of address space */ +#define XFSMNT_GQUOTA 0x00400000 /* group quota accounting */ +#define XFSMNT_GQUOTAENF 0x00800000 /* group quota limit + * enforcement */ +#define XFSMNT_NOUUID 0x01000000 /* Ignore fs uuid */ +#define XFSMNT_DMAPI 0x02000000 /* enable dmapi/xdsm */ +#define XFSMNT_NOLOGFLUSH 0x04000000 /* Don't flush for log blocks */ +#define XFSMNT_IDELETE 0x08000000 /* inode cluster delete */ +#define XFSMNT_SWALLOC 0x10000000 /* turn on stripe width + * allocation */ +#define XFSMNT_IHASHSIZE 0x20000000 /* inode hash table size */ +#define XFSMNT_DIRSYNC 0x40000000 /* sync creat,link,unlink,rename + * symlink,mkdir,rmdir,mknod */ + +#endif /* __XFS_CLNT_H__ */ |