Initial import

1 files changed, 153 insertions, 0 deletions

diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h
new file mode 100644
index 000000000..c0394ed12
--- /dev/null
+++ b/fs/xfs/xfs_error.h
@@ -0,0 +1,153 @@
+/*
+ * 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__
+
+struct xfs_mount;
+
+extern void xfs_error_report(const char *tag, int level, struct xfs_mount *mp,
+			const char *filename, int linenum, inst_t *ra);
+extern void xfs_corruption_error(const char *tag, int level,
+			struct xfs_mount *mp, void *p, const char *filename,
+			int linenum, inst_t *ra);
+extern void xfs_verifier_error(struct xfs_buf *bp);
+
+#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(mp, 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, mp); \
+			error = -EFSCORRUPTED; \
+			goto l; \
+		} \
+	}
+
+#define	XFS_WANT_CORRUPTED_RETURN(mp, 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, mp); \
+			return -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_active;
+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_active && \
+	 xfs_error_test((tag), (mp)->m_fixedfsid, "expr", __LINE__, __FILE__, \
+			(rf))))
+
+extern int xfs_errortag_add(int error_tag, struct xfs_mount *mp);
+extern int xfs_errortag_clearall(struct xfs_mount *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_alert_tag() be turned into
+ *			a panic by setting xfs_panic_mask in a sysctl.
+ */
+#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
+
+#endif	/* __XFS_ERROR_H__ */