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_format.h"
21#include "xfs_log_format.h"
22#include "xfs_trans_resv.h"
23#include "xfs_mount.h"
24
25/*
26 * XFS logging functions
27 */
28static void
29__xfs_printk(
30	const char		*level,
31	const struct xfs_mount	*mp,
32	struct va_format	*vaf)
33{
34	if (mp && mp->m_fsname) {
35		printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf);
36		return;
37	}
38	printk("%sXFS: %pV\n", level, vaf);
39}
40
41#define define_xfs_printk_level(func, kern_level)		\
42void func(const struct xfs_mount *mp, const char *fmt, ...)	\
43{								\
44	struct va_format	vaf;				\
45	va_list			args;				\
46								\
47	va_start(args, fmt);					\
48								\
49	vaf.fmt = fmt;						\
50	vaf.va = &args;						\
51								\
52	__xfs_printk(kern_level, mp, &vaf);			\
53	va_end(args);						\
54}								\
55
56define_xfs_printk_level(xfs_emerg, KERN_EMERG);
57define_xfs_printk_level(xfs_alert, KERN_ALERT);
58define_xfs_printk_level(xfs_crit, KERN_CRIT);
59define_xfs_printk_level(xfs_err, KERN_ERR);
60define_xfs_printk_level(xfs_warn, KERN_WARNING);
61define_xfs_printk_level(xfs_notice, KERN_NOTICE);
62define_xfs_printk_level(xfs_info, KERN_INFO);
63#ifdef DEBUG
64define_xfs_printk_level(xfs_debug, KERN_DEBUG);
65#endif
66
67void
68xfs_alert_tag(
69	const struct xfs_mount	*mp,
70	int			panic_tag,
71	const char		*fmt, ...)
72{
73	struct va_format	vaf;
74	va_list			args;
75	int			do_panic = 0;
76
77	if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
78		xfs_alert(mp, "Transforming an alert into a BUG.");
79		do_panic = 1;
80	}
81
82	va_start(args, fmt);
83
84	vaf.fmt = fmt;
85	vaf.va = &args;
86
87	__xfs_printk(KERN_ALERT, mp, &vaf);
88	va_end(args);
89
90	BUG_ON(do_panic);
91}
92
93void
94asswarn(char *expr, char *file, int line)
95{
96	xfs_warn(NULL, "Assertion failed: %s, file: %s, line: %d",
97		expr, file, line);
98	WARN_ON(1);
99}
100
101void
102assfail(char *expr, char *file, int line)
103{
104	xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
105		expr, file, line);
106	BUG();
107}
108
109void
110xfs_hex_dump(void *p, int length)
111{
112	print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
113}
114