| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of version 2 of the GNU General Public License as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it would be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 11 | * |
| 12 | * Further, this software is distributed without any warranty that it is |
| 13 | * free of the rightful claim of any third person regarding infringement |
| 14 | * or the like. Any license provided herein, whether implied or |
| 15 | * otherwise, applies only to this software file. Patent licenses, if |
| 16 | * any, provided herein do not apply to combinations of this program with |
| 17 | * other software, or any other product whatsoever. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write the Free Software Foundation, Inc., 59 |
| 21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 22 | * |
| 23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, |
| 24 | * Mountain View, CA 94043, or: |
| 25 | * |
| 26 | * http://www.sgi.com |
| 27 | * |
| 28 | * For further information regarding this notice, see: |
| 29 | * |
| 30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ |
| 31 | */ |
| 32 | #ifndef __XFS_CLNT_H__ |
| 33 | #define __XFS_CLNT_H__ |
| 34 | |
| 35 | /* |
| 36 | * XFS arguments structure, constructed from the arguments we |
| 37 | * are passed via the mount system call. |
| 38 | * |
| 39 | * NOTE: The mount system call is handled differently between |
| 40 | * Linux and IRIX. In IRIX we worked work with a binary data |
| 41 | * structure coming in across the syscall interface from user |
| 42 | * space (the mount userspace knows about each filesystem type |
| 43 | * and the set of valid options for it, and converts the users |
| 44 | * argument string into a binary structure _before_ making the |
| 45 | * system call), and the ABI issues that this implies. |
| 46 | * |
| 47 | * In Linux, we are passed a comma separated set of options; |
| 48 | * ie. a NULL terminated string of characters. Userspace mount |
| 49 | * code does not have any knowledge of mount options expected by |
| 50 | * each filesystem type and so each filesystem parses its mount |
| 51 | * options in kernel space. |
| 52 | * |
| 53 | * For the Linux port, we kept this structure pretty much intact |
| 54 | * and use it internally (because the existing code groks it). |
| 55 | */ |
| 56 | struct xfs_mount_args { |
| 57 | int flags; /* flags -> see XFSMNT_... macros below */ |
| 58 | int logbufs; /* Number of log buffers, -1 to default */ |
| 59 | int logbufsize; /* Size of log buffers, -1 to default */ |
| 60 | char fsname[MAXNAMELEN+1]; /* data device name */ |
| 61 | char rtname[MAXNAMELEN+1]; /* realtime device filename */ |
| 62 | char logname[MAXNAMELEN+1]; /* journal device filename */ |
| 63 | char mtpt[MAXNAMELEN+1]; /* filesystem mount point */ |
| 64 | int sunit; /* stripe unit (BBs) */ |
| 65 | int swidth; /* stripe width (BBs), multiple of sunit */ |
| 66 | uchar_t iosizelog; /* log2 of the preferred I/O size */ |
| 67 | int ihashsize; /* inode hash table size (buckets) */ |
| 68 | }; |
| 69 | |
| 70 | /* |
| 71 | * XFS mount option flags |
| 72 | */ |
| 73 | #define XFSMNT_CHKLOG 0x00000001 /* check log */ |
| 74 | #define XFSMNT_WSYNC 0x00000002 /* safe mode nfs mount |
| 75 | * compatible */ |
| 76 | #define XFSMNT_INO64 0x00000004 /* move inode numbers up |
| 77 | * past 2^32 */ |
| 78 | #define XFSMNT_UQUOTA 0x00000008 /* user quota accounting */ |
| 79 | #define XFSMNT_PQUOTA 0x00000010 /* IRIX prj quota accounting */ |
| 80 | #define XFSMNT_UQUOTAENF 0x00000020 /* user quota limit |
| 81 | * enforcement */ |
| 82 | #define XFSMNT_PQUOTAENF 0x00000040 /* IRIX project quota limit |
| 83 | * enforcement */ |
| 84 | #define XFSMNT_NOATIME 0x00000100 /* don't modify access |
| 85 | * times on reads */ |
| 86 | #define XFSMNT_NOALIGN 0x00000200 /* don't allocate at |
| 87 | * stripe boundaries*/ |
| 88 | #define XFSMNT_RETERR 0x00000400 /* return error to user */ |
| 89 | #define XFSMNT_NORECOVERY 0x00000800 /* no recovery, implies |
| 90 | * read-only mount */ |
| 91 | #define XFSMNT_SHARED 0x00001000 /* shared XFS mount */ |
| 92 | #define XFSMNT_IOSIZE 0x00002000 /* optimize for I/O size */ |
| 93 | #define XFSMNT_OSYNCISOSYNC 0x00004000 /* o_sync is REALLY o_sync */ |
| 94 | /* (osyncisdsync is now default) */ |
| 95 | #define XFSMNT_32BITINODES 0x00200000 /* restrict inodes to 32 |
| 96 | * bits of address space */ |
| 97 | #define XFSMNT_GQUOTA 0x00400000 /* group quota accounting */ |
| 98 | #define XFSMNT_GQUOTAENF 0x00800000 /* group quota limit |
| 99 | * enforcement */ |
| 100 | #define XFSMNT_NOUUID 0x01000000 /* Ignore fs uuid */ |
| 101 | #define XFSMNT_DMAPI 0x02000000 /* enable dmapi/xdsm */ |
| 102 | #define XFSMNT_NOLOGFLUSH 0x04000000 /* Don't flush for log blocks */ |
| 103 | #define XFSMNT_IDELETE 0x08000000 /* inode cluster delete */ |
| 104 | #define XFSMNT_SWALLOC 0x10000000 /* turn on stripe width |
| 105 | * allocation */ |
| 106 | #define XFSMNT_IHASHSIZE 0x20000000 /* inode hash table size */ |
| 107 | #define XFSMNT_DIRSYNC 0x40000000 /* sync creat,link,unlink,rename |
| 108 | * symlink,mkdir,rmdir,mknod */ |
| 109 | |
| 110 | #endif /* __XFS_CLNT_H__ */ |