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-rw-r--r--fs/xfs/xfs_error.h113
1 files changed, 113 insertions, 0 deletions
diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h
new file mode 100644
index 0000000000..0b9c5ba8a5
--- /dev/null
+++ b/fs/xfs/xfs_error.h
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ */
+#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,
+ xfs_failaddr_t failaddr);
+extern void xfs_corruption_error(const char *tag, int level,
+ struct xfs_mount *mp, const void *buf, size_t bufsize,
+ const char *filename, int linenum,
+ xfs_failaddr_t failaddr);
+void xfs_buf_corruption_error(struct xfs_buf *bp, xfs_failaddr_t fa);
+extern void xfs_buf_verifier_error(struct xfs_buf *bp, int error,
+ const char *name, const void *buf, size_t bufsz,
+ xfs_failaddr_t failaddr);
+extern void xfs_verifier_error(struct xfs_buf *bp, int error,
+ xfs_failaddr_t failaddr);
+extern void xfs_inode_verifier_error(struct xfs_inode *ip, int error,
+ const char *name, const void *buf, size_t bufsz,
+ xfs_failaddr_t failaddr);
+
+#define XFS_ERROR_REPORT(e, lvl, mp) \
+ xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address)
+#define XFS_CORRUPTION_ERROR(e, lvl, mp, buf, bufsize) \
+ xfs_corruption_error(e, lvl, mp, buf, bufsize, \
+ __FILE__, __LINE__, __return_address)
+
+#define XFS_ERRLEVEL_OFF 0
+#define XFS_ERRLEVEL_LOW 1
+#define XFS_ERRLEVEL_HIGH 5
+
+/* Dump 128 bytes of any corrupt buffer */
+#define XFS_CORRUPTION_DUMP_LEN (128)
+
+#ifdef DEBUG
+extern int xfs_errortag_init(struct xfs_mount *mp);
+extern void xfs_errortag_del(struct xfs_mount *mp);
+extern bool xfs_errortag_test(struct xfs_mount *mp, const char *expression,
+ const char *file, int line, unsigned int error_tag);
+#define XFS_TEST_ERROR(expr, mp, tag) \
+ ((expr) || xfs_errortag_test((mp), #expr, __FILE__, __LINE__, (tag)))
+bool xfs_errortag_enabled(struct xfs_mount *mp, unsigned int tag);
+#define XFS_ERRORTAG_DELAY(mp, tag) \
+ do { \
+ might_sleep(); \
+ if (!xfs_errortag_enabled((mp), (tag))) \
+ break; \
+ xfs_warn_ratelimited((mp), \
+"Injecting %ums delay at file %s, line %d, on filesystem \"%s\"", \
+ (mp)->m_errortag[(tag)], __FILE__, __LINE__, \
+ (mp)->m_super->s_id); \
+ mdelay((mp)->m_errortag[(tag)]); \
+ } while (0)
+
+extern int xfs_errortag_get(struct xfs_mount *mp, unsigned int error_tag);
+extern int xfs_errortag_set(struct xfs_mount *mp, unsigned int error_tag,
+ unsigned int tag_value);
+extern int xfs_errortag_add(struct xfs_mount *mp, unsigned int error_tag);
+extern int xfs_errortag_clearall(struct xfs_mount *mp);
+#else
+#define xfs_errortag_init(mp) (0)
+#define xfs_errortag_del(mp)
+#define XFS_TEST_ERROR(expr, mp, tag) (expr)
+#define XFS_ERRORTAG_DELAY(mp, tag) ((void)0)
+#define xfs_errortag_set(mp, tag, val) (ENOSYS)
+#define xfs_errortag_add(mp, tag) (ENOSYS)
+#define xfs_errortag_clearall(mp) (ENOSYS)
+#endif /* DEBUG */
+
+/*
+ * XFS panic tags -- allow a call to xfs_alert_tag() be turned into
+ * a panic by setting fs.xfs.panic_mask in a sysctl.
+ */
+#define XFS_NO_PTAG 0u
+#define XFS_PTAG_IFLUSH (1u << 0)
+#define XFS_PTAG_LOGRES (1u << 1)
+#define XFS_PTAG_AILDELETE (1u << 2)
+#define XFS_PTAG_ERROR_REPORT (1u << 3)
+#define XFS_PTAG_SHUTDOWN_CORRUPT (1u << 4)
+#define XFS_PTAG_SHUTDOWN_IOERROR (1u << 5)
+#define XFS_PTAG_SHUTDOWN_LOGERROR (1u << 6)
+#define XFS_PTAG_FSBLOCK_ZERO (1u << 7)
+#define XFS_PTAG_VERIFIER_ERROR (1u << 8)
+
+#define XFS_PTAG_MASK (XFS_PTAG_IFLUSH | \
+ XFS_PTAG_LOGRES | \
+ XFS_PTAG_AILDELETE | \
+ XFS_PTAG_ERROR_REPORT | \
+ XFS_PTAG_SHUTDOWN_CORRUPT | \
+ XFS_PTAG_SHUTDOWN_IOERROR | \
+ XFS_PTAG_SHUTDOWN_LOGERROR | \
+ XFS_PTAG_FSBLOCK_ZERO | \
+ XFS_PTAG_VERIFIER_ERROR)
+
+#define XFS_PTAG_STRINGS \
+ { XFS_NO_PTAG, "none" }, \
+ { XFS_PTAG_IFLUSH, "iflush" }, \
+ { XFS_PTAG_LOGRES, "logres" }, \
+ { XFS_PTAG_AILDELETE, "aildelete" }, \
+ { XFS_PTAG_ERROR_REPORT , "error_report" }, \
+ { XFS_PTAG_SHUTDOWN_CORRUPT, "corrupt" }, \
+ { XFS_PTAG_SHUTDOWN_IOERROR, "ioerror" }, \
+ { XFS_PTAG_SHUTDOWN_LOGERROR, "logerror" }, \
+ { XFS_PTAG_FSBLOCK_ZERO, "fsb_zero" }, \
+ { XFS_PTAG_VERIFIER_ERROR, "verifier" }
+
+#endif /* __XFS_ERROR_H__ */