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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | /* * 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_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 */ #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) */ #endif /* __XFS_CLNT_H__ */ |