Initial import of modified Linux 2.6.28 tree

Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y

1 files changed, 176 insertions, 0 deletions

diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h
new file mode 100644
index 0000000..11543f1
--- /dev/null
+++ b/fs/xfs/xfs_error.h
@@ -0,0 +1,176 @@
+/*
+ * Copyright (c) 2000-2002,2005 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_ERROR_H__
+#define	__XFS_ERROR_H__
+
+#ifdef DEBUG
+#define	XFS_ERROR_NTRAP	10
+extern int	xfs_etrap[XFS_ERROR_NTRAP];
+extern int	xfs_error_trap(int);
+#define	XFS_ERROR(e)	xfs_error_trap(e)
+#else
+#define	XFS_ERROR(e)	(e)
+#endif
+
+struct xfs_mount;
+
+extern void xfs_error_report(char *tag, int level, struct xfs_mount *mp,
+				char *fname, int linenum, inst_t *ra);
+extern void xfs_corruption_error(char *tag, int level, struct xfs_mount *mp,
+				void *p, char *fname, int linenum, inst_t *ra);
+
+#define	XFS_ERROR_REPORT(e, lvl, mp)	\
+	xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address)
+#define	XFS_CORRUPTION_ERROR(e, lvl, mp, mem)	\
+	xfs_corruption_error(e, lvl, mp, mem, \
+			     __FILE__, __LINE__, __return_address)
+
+#define XFS_ERRLEVEL_OFF	0
+#define XFS_ERRLEVEL_LOW	1
+#define XFS_ERRLEVEL_HIGH	5
+
+/*
+ * Macros to set EFSCORRUPTED & return/branch.
+ */
+#define	XFS_WANT_CORRUPTED_GOTO(x,l)	\
+	{ \
+		int fs_is_ok = (x); \
+		ASSERT(fs_is_ok); \
+		if (unlikely(!fs_is_ok)) { \
+			XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_GOTO", \
+					 XFS_ERRLEVEL_LOW, NULL); \
+			error = XFS_ERROR(EFSCORRUPTED); \
+			goto l; \
+		} \
+	}
+
+#define	XFS_WANT_CORRUPTED_RETURN(x)	\
+	{ \
+		int fs_is_ok = (x); \
+		ASSERT(fs_is_ok); \
+		if (unlikely(!fs_is_ok)) { \
+			XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_RETURN", \
+					 XFS_ERRLEVEL_LOW, NULL); \
+			return XFS_ERROR(EFSCORRUPTED); \
+		} \
+	}
+
+/*
+ * error injection tags - the labels can be anything you want
+ * but each tag should have its own unique number
+ */
+
+#define XFS_ERRTAG_NOERROR				0
+#define XFS_ERRTAG_IFLUSH_1				1
+#define XFS_ERRTAG_IFLUSH_2				2
+#define XFS_ERRTAG_IFLUSH_3				3
+#define XFS_ERRTAG_IFLUSH_4				4
+#define XFS_ERRTAG_IFLUSH_5				5
+#define XFS_ERRTAG_IFLUSH_6				6
+#define	XFS_ERRTAG_DA_READ_BUF				7
+#define	XFS_ERRTAG_BTREE_CHECK_LBLOCK			8
+#define	XFS_ERRTAG_BTREE_CHECK_SBLOCK			9
+#define	XFS_ERRTAG_ALLOC_READ_AGF			10
+#define	XFS_ERRTAG_IALLOC_READ_AGI			11
+#define	XFS_ERRTAG_ITOBP_INOTOBP			12
+#define	XFS_ERRTAG_IUNLINK				13
+#define	XFS_ERRTAG_IUNLINK_REMOVE			14
+#define	XFS_ERRTAG_DIR_INO_VALIDATE			15
+#define XFS_ERRTAG_BULKSTAT_READ_CHUNK			16
+#define XFS_ERRTAG_IODONE_IOERR				17
+#define XFS_ERRTAG_STRATREAD_IOERR			18
+#define XFS_ERRTAG_STRATCMPL_IOERR			19
+#define XFS_ERRTAG_DIOWRITE_IOERR			20
+#define XFS_ERRTAG_BMAPIFORMAT				21
+#define XFS_ERRTAG_MAX					22
+
+/*
+ * Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
+ */
+#define XFS_RANDOM_DEFAULT				100
+#define XFS_RANDOM_IFLUSH_1				XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IFLUSH_2				XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IFLUSH_3				XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IFLUSH_4				XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IFLUSH_5				XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IFLUSH_6				XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_DA_READ_BUF				XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_BTREE_CHECK_LBLOCK			(XFS_RANDOM_DEFAULT/4)
+#define XFS_RANDOM_BTREE_CHECK_SBLOCK			XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_ALLOC_READ_AGF			XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IALLOC_READ_AGI			XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_ITOBP_INOTOBP			XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IUNLINK				XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IUNLINK_REMOVE			XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_DIR_INO_VALIDATE			XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_BULKSTAT_READ_CHUNK			XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IODONE_IOERR				(XFS_RANDOM_DEFAULT/10)
+#define XFS_RANDOM_STRATREAD_IOERR			(XFS_RANDOM_DEFAULT/10)
+#define XFS_RANDOM_STRATCMPL_IOERR			(XFS_RANDOM_DEFAULT/10)
+#define XFS_RANDOM_DIOWRITE_IOERR			(XFS_RANDOM_DEFAULT/10)
+#define	XFS_RANDOM_BMAPIFORMAT				XFS_RANDOM_DEFAULT
+
+#ifdef DEBUG
+extern int xfs_error_test(int, int *, char *, int, char *, unsigned long);
+
+#define	XFS_NUM_INJECT_ERROR				10
+#define XFS_TEST_ERROR(expr, mp, tag, rf)		\
+	((expr) || \
+	 xfs_error_test((tag), (mp)->m_fixedfsid, "expr", __LINE__, __FILE__, \
+			(rf)))
+
+extern int xfs_errortag_add(int error_tag, xfs_mount_t *mp);
+extern int xfs_errortag_clearall(xfs_mount_t *mp, int loud);
+#else
+#define XFS_TEST_ERROR(expr, mp, tag, rf)	(expr)
+#define xfs_errortag_add(tag, mp)		(ENOSYS)
+#define xfs_errortag_clearall(mp, loud)		(ENOSYS)
+#endif /* DEBUG */
+
+/*
+ * XFS panic tags -- allow a call to xfs_cmn_err() be turned into
+ *			a panic by setting xfs_panic_mask in a
+ *			sysctl.  update xfs_max[XFS_PARAM] if
+ *			more are added.
+ */
+#define		XFS_NO_PTAG			0
+#define		XFS_PTAG_IFLUSH			0x00000001
+#define		XFS_PTAG_LOGRES			0x00000002
+#define		XFS_PTAG_AILDELETE		0x00000004
+#define		XFS_PTAG_ERROR_REPORT		0x00000008
+#define		XFS_PTAG_SHUTDOWN_CORRUPT	0x00000010
+#define		XFS_PTAG_SHUTDOWN_IOERROR	0x00000020
+#define		XFS_PTAG_SHUTDOWN_LOGERROR	0x00000040
+#define		XFS_PTAG_FSBLOCK_ZERO		0x00000080
+
+struct xfs_mount;
+/* PRINTFLIKE4 */
+extern void xfs_cmn_err(int panic_tag, int level, struct xfs_mount *mp,
+			char *fmt, ...);
+/* PRINTFLIKE3 */
+extern void xfs_fs_cmn_err(int level, struct xfs_mount *mp, char *fmt, ...);
+
+extern void xfs_hex_dump(void *p, int length);
+
+#define xfs_fs_repair_cmn_err(level, mp, fmt, args...) \
+	xfs_fs_cmn_err(level, mp, fmt "  Unmount and run xfs_repair.", ## args)
+
+#define xfs_fs_mount_cmn_err(f, fmt, args...) \
+	((f & XFS_MFSI_QUIET)? (void)0 : cmn_err(CE_WARN, "XFS: " fmt, ## args))
+
+#endif	/* __XFS_ERROR_H__ */