[linux.git] / fs / xfs / xfs_clnt.h

/*
 * 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_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	flags2;		/* flags -> see XFSMNT2_... 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 -- args->flags1
 */
#define	XFSMNT_ATTR2		0x00000001	/* allow ATTR2 EA format */
#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_QUIET		0x00000080	/* don't report mount errors */
#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 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_BARRIER		0x04000000	/* use write barriers */
#define XFSMNT_IKEEP		0x08000000	/* inode cluster delete */
#define XFSMNT_SWALLOC		0x10000000	/* turn on stripe width
						 * allocation */
#define XFSMNT_DIRSYNC		0x40000000	/* sync creat,link,unlink,rename
						 * symlink,mkdir,rmdir,mknod */
#define XFSMNT_FLAGS2		0x80000000	/* more flags set in flags2 */

/*
 * XFS mount option flags -- args->flags2
 */
#define XFSMNT2_COMPAT_IOSIZE	0x00000001	/* don't report large preferred
						 * I/O size in stat(2) */
#define XFSMNT2_FILESTREAMS	0x00000002	/* enable the filestreams
						 * allocator */

#endif	/* __XFS_CLNT_H__ */
Commit	Line	Data
1da177e4	1	/*
7b718769 NS	2	* Copyright (c) 2000-2005 Silicon Graphics, Inc.
7b718769 NS	3	* All Rights Reserved.
1da177e4	4	*
7b718769 NS	5	* This program is free software; you can redistribute it and/or
7b718769 NS	6	* modify it under the terms of the GNU General Public License as
1da177e4 LT	7	* published by the Free Software Foundation.
1da177e4 LT	8	*
7b718769 NS	9	* 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.
1da177e4	13	*
7b718769 NS	14	* 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
1da177e4 LT	17	*/
	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	*/
	42	struct xfs_mount_args {
	43	int flags; /* flags -> see XFSMNT_... macros below */
e718eeb4	44	int flags2; /* flags -> see XFSMNT2_... macros below */
1da177e4 LT	45	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	/*
e718eeb4	58	* XFS mount option flags -- args->flags1
1da177e4	59	*/
13059ff0	60	#define XFSMNT_ATTR2 0x00000001 /* allow ATTR2 EA format */
1da177e4 LT	61	#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 */
764d1f89	71	#define XFSMNT_QUIET 0x00000080 /* don't report mount errors */
1da177e4 LT	72	#define XFSMNT_NOALIGN 0x00000200 /* don't allocate at
	73	* stripe boundaries*/
	74	#define XFSMNT_RETERR 0x00000400 /* return error to user */
	75	#define XFSMNT_NORECOVERY 0x00000800 /* no recovery, implies
	76	* read-only mount */
	77	#define XFSMNT_SHARED 0x00001000 /* shared XFS mount */
	78	#define XFSMNT_IOSIZE 0x00002000 /* optimize for I/O size */
	79	#define XFSMNT_OSYNCISOSYNC 0x00004000 /* o_sync is REALLY o_sync */
e718eeb4	80	/* (osyncisdsync is default) */
1da177e4 LT	81	#define XFSMNT_32BITINODES 0x00200000 /* restrict inodes to 32
	82	* bits of address space */
	83	#define XFSMNT_GQUOTA 0x00400000 /* group quota accounting */
	84	#define XFSMNT_GQUOTAENF 0x00800000 /* group quota limit
	85	* enforcement */
	86	#define XFSMNT_NOUUID 0x01000000 /* Ignore fs uuid */
	87	#define XFSMNT_DMAPI 0x02000000 /* enable dmapi/xdsm */
f538d4da	88	#define XFSMNT_BARRIER 0x04000000 /* use write barriers */
1bd960ee	89	#define XFSMNT_IKEEP 0x08000000 /* inode cluster delete */
1da177e4 LT	90	#define XFSMNT_SWALLOC 0x10000000 /* turn on stripe width
1da177e4 LT	91	* allocation */
1da177e4 LT	92	#define XFSMNT_DIRSYNC 0x40000000 /* sync creat,link,unlink,rename
1da177e4 LT	93	* symlink,mkdir,rmdir,mknod */
e718eeb4 NS	94	#define XFSMNT_FLAGS2 0x80000000 /* more flags set in flags2 */
	95
	96	/*
	97	* XFS mount option flags -- args->flags2
	98	*/
	99	#define XFSMNT2_COMPAT_IOSIZE 0x00000001 /* don't report large preferred
	100	* I/O size in stat(2) */
2a82b8be DC	101	#define XFSMNT2_FILESTREAMS 0x00000002 /* enable the filestreams
2a82b8be DC	102	* allocator */
1da177e4 LT	103
1da177e4 LT	104	#endif /* __XFS_CLNT_H__ */