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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/xfs/xfs_clnt.h
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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+/*
+ * 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__ */