1/*
2 * Copyright (c) 2011 Red Hat, Inc.  All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write the Free Software Foundation,
15 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
16 */
17
18#include "xfs.h"
19#include "xfs_fs.h"
20#include "xfs_error.h"
21#include "xfs_format.h"
22#include "xfs_log_format.h"
23#include "xfs_trans_resv.h"
24#include "xfs_mount.h"
25
26/*
27 * XFS logging functions
28 */
29static void
30__xfs_printk(
31	const char		*level,
32	const struct xfs_mount	*mp,
33	struct va_format	*vaf)
34{
35	if (mp && mp->m_fsname) {
36		printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf);
37		return;
38	}
39	printk("%sXFS: %pV\n", level, vaf);
40}
41
42#define define_xfs_printk_level(func, kern_level)		\
43void func(const struct xfs_mount *mp, const char *fmt, ...)	\
44{								\
45	struct va_format	vaf;				\
46	va_list			args;				\
47	int			level;				\
48								\
49	va_start(args, fmt);					\
50								\
51	vaf.fmt = fmt;						\
52	vaf.va = &args;						\
53								\
54	__xfs_printk(kern_level, mp, &vaf);			\
55	va_end(args);						\
56								\
57	if (!kstrtoint(kern_level, 0, &level) &&		\
58	    level <= LOGLEVEL_ERR &&				\
59	    xfs_error_level >= XFS_ERRLEVEL_HIGH)		\
60		xfs_stack_trace();				\
61}								\
62
63define_xfs_printk_level(xfs_emerg, KERN_EMERG);
64define_xfs_printk_level(xfs_alert, KERN_ALERT);
65define_xfs_printk_level(xfs_crit, KERN_CRIT);
66define_xfs_printk_level(xfs_err, KERN_ERR);
67define_xfs_printk_level(xfs_warn, KERN_WARNING);
68define_xfs_printk_level(xfs_notice, KERN_NOTICE);
69define_xfs_printk_level(xfs_info, KERN_INFO);
70#ifdef DEBUG
71define_xfs_printk_level(xfs_debug, KERN_DEBUG);
72#endif
73
74void
75xfs_alert_tag(
76	const struct xfs_mount	*mp,
77	int			panic_tag,
78	const char		*fmt, ...)
79{
80	struct va_format	vaf;
81	va_list			args;
82	int			do_panic = 0;
83
84	if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
85		xfs_alert(mp, "Transforming an alert into a BUG.");
86		do_panic = 1;
87	}
88
89	va_start(args, fmt);
90
91	vaf.fmt = fmt;
92	vaf.va = &args;
93
94	__xfs_printk(KERN_ALERT, mp, &vaf);
95	va_end(args);
96
97	BUG_ON(do_panic);
98}
99
100void
101asswarn(char *expr, char *file, int line)
102{
103	xfs_warn(NULL, "Assertion failed: %s, file: %s, line: %d",
104		expr, file, line);
105	WARN_ON(1);
106}
107
108void
109assfail(char *expr, char *file, int line)
110{
111	xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
112		expr, file, line);
113	BUG();
114}
115
116void
117xfs_hex_dump(void *p, int length)
118{
119	print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
120}
121