1/* 2 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 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. 13 * 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 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 */ 42struct xfs_mount_args { 43 int flags; /* flags -> see XFSMNT_... macros below */ 44 int flags2; /* flags -> see XFSMNT2_... macros below */ 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/* 58 * XFS mount option flags -- args->flags1 59 */ 60#define XFSMNT_ATTR2 0x00000001 /* allow ATTR2 EA format */ 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 */ 71#define XFSMNT_QUIET 0x00000080 /* don't report mount errors */ 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 */ 80 /* (osyncisdsync is default) */ 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 */ 88#define XFSMNT_BARRIER 0x04000000 /* use write barriers */ 89#define XFSMNT_IDELETE 0x08000000 /* inode cluster delete */ 90#define XFSMNT_SWALLOC 0x10000000 /* turn on stripe width 91 * allocation */ 92#define XFSMNT_IHASHSIZE 0x20000000 /* inode hash table size */ 93#define XFSMNT_DIRSYNC 0x40000000 /* sync creat,link,unlink,rename 94 * symlink,mkdir,rmdir,mknod */ 95#define XFSMNT_FLAGS2 0x80000000 /* more flags set in flags2 */ 96 97/* 98 * XFS mount option flags -- args->flags2 99 */ 100#define XFSMNT2_COMPAT_IOSIZE 0x00000001 /* don't report large preferred 101 * I/O size in stat(2) */ 102 103#endif /* __XFS_CLNT_H__ */ 104