cregit-Linux how code gets into the kernel

Release 4.14 fs/xfs/xfs_error.h

Directory: fs/xfs
/*
 * 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, void *ra);
extern void xfs_corruption_error(const char *tag, int level,
			struct xfs_mount *mp, void *p, const char *filename,
			int linenum, void *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_FREE_EXTENT				22

#define XFS_ERRTAG_RMAP_FINISH_ONE			23

#define XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE		24

#define XFS_ERRTAG_REFCOUNT_FINISH_ONE			25

#define XFS_ERRTAG_BMAP_FINISH_ONE			26

#define XFS_ERRTAG_AG_RESV_CRITICAL			27
/*
 * DEBUG mode instrumentation to test and/or trigger delayed allocation
 * block killing in the event of failed writes. When enabled, all
 * buffered writes are silenty dropped and handled as if they failed.
 * All delalloc blocks in the range of the write (including pre-existing
 * delalloc blocks!) are tossed as part of the write failure error
 * handling sequence.
 */

#define XFS_ERRTAG_DROP_WRITES				28

#define XFS_ERRTAG_LOG_BAD_CRC				29

#define XFS_ERRTAG_LOG_ITEM_PIN				30

#define XFS_ERRTAG_MAX					31

/*
 * 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

#define XFS_RANDOM_FREE_EXTENT				1

#define XFS_RANDOM_RMAP_FINISH_ONE			1

#define XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE		1

#define XFS_RANDOM_REFCOUNT_FINISH_ONE			1

#define XFS_RANDOM_BMAP_FINISH_ONE			1

#define XFS_RANDOM_AG_RESV_CRITICAL			4

#define XFS_RANDOM_DROP_WRITES				1

#define XFS_RANDOM_LOG_BAD_CRC				1

#define XFS_RANDOM_LOG_ITEM_PIN				1

#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)))

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_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 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__ */

Overall Contributors
PersonTokensPropCommitsCommitProp
Christoph Hellwig28145.77%413.79%


Darrick J. Wong14824.10%931.03%


Glen Overby10617.26%26.90%


Eric Sandeen243.91%413.79%


Nathan Scott243.91%310.34%


Brian Foster172.77%26.90%


Dave Chinner71.14%310.34%


Alex Elder60.98%13.45%


Dan Carpenter10.16%13.45%


Total614100.00%29100.00%


Directory: fs/xfs



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