1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2011 Red Hat, Inc.  All Rights Reserved.
4 */
5
6#include "xfs.h"
7#include "xfs_fs.h"
8#include "xfs_error.h"
9#include "xfs_shared.h"
10#include "xfs_format.h"
11#include "xfs_trans_resv.h"
12#include "xfs_mount.h"
13
14/*
15 * XFS logging functions
16 */
17static void
18__xfs_printk(
19	const char		*level,
20	const struct xfs_mount	*mp,
21	struct va_format	*vaf)
22{
23	if (mp && mp->m_super) {
24		printk("%sXFS (%s): %pV\n", level, mp->m_super->s_id, vaf);
25		return;
26	}
27	printk("%sXFS: %pV\n", level, vaf);
28}
29
30#define define_xfs_printk_level(func, kern_level)		\
31void func(const struct xfs_mount *mp, const char *fmt, ...)	\
32{								\
33	struct va_format	vaf;				\
34	va_list			args;				\
35	int			level;				\
36								\
37	va_start(args, fmt);					\
38								\
39	vaf.fmt = fmt;						\
40	vaf.va = &args;						\
41								\
42	__xfs_printk(kern_level, mp, &vaf);			\
43	va_end(args);						\
44								\
45	if (!kstrtoint(kern_level, 0, &level) &&		\
46	    level <= LOGLEVEL_ERR &&				\
47	    xfs_error_level >= XFS_ERRLEVEL_HIGH)		\
48		xfs_stack_trace();				\
49}								\
50
51define_xfs_printk_level(xfs_emerg, KERN_EMERG);
52define_xfs_printk_level(xfs_alert, KERN_ALERT);
53define_xfs_printk_level(xfs_crit, KERN_CRIT);
54define_xfs_printk_level(xfs_err, KERN_ERR);
55define_xfs_printk_level(xfs_warn, KERN_WARNING);
56define_xfs_printk_level(xfs_notice, KERN_NOTICE);
57define_xfs_printk_level(xfs_info, KERN_INFO);
58#ifdef DEBUG
59define_xfs_printk_level(xfs_debug, KERN_DEBUG);
60#endif
61
62void
63xfs_alert_tag(
64	const struct xfs_mount	*mp,
65	int			panic_tag,
66	const char		*fmt, ...)
67{
68	struct va_format	vaf;
69	va_list			args;
70	int			do_panic = 0;
71
72	if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
73		xfs_alert(mp, "Transforming an alert into a BUG.");
74		do_panic = 1;
75	}
76
77	va_start(args, fmt);
78
79	vaf.fmt = fmt;
80	vaf.va = &args;
81
82	__xfs_printk(KERN_ALERT, mp, &vaf);
83	va_end(args);
84
85	BUG_ON(do_panic);
86}
87
88void
89asswarn(
90	struct xfs_mount	*mp,
91	char			*expr,
92	char			*file,
93	int			line)
94{
95	xfs_warn(mp, "Assertion failed: %s, file: %s, line: %d",
96		expr, file, line);
97	WARN_ON(1);
98}
99
100void
101assfail(
102	struct xfs_mount	*mp,
103	char			*expr,
104	char			*file,
105	int			line)
106{
107	xfs_emerg(mp, "Assertion failed: %s, file: %s, line: %d",
108		expr, file, line);
109	if (xfs_globals.bug_on_assert)
110		BUG();
111	else
112		WARN_ON(1);
113}
114
115void
116xfs_hex_dump(const void *p, int length)
117{
118	print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_OFFSET, 16, 1, p, length, 1);
119}
120
121void
122xfs_buf_alert_ratelimited(
123	struct xfs_buf		*bp,
124	const char		*rlmsg,
125	const char		*fmt,
126	...)
127{
128	struct xfs_mount	*mp = bp->b_mount;
129	struct va_format	vaf;
130	va_list			args;
131
132	/* use the more aggressive per-target rate limit for buffers */
133	if (!___ratelimit(&bp->b_target->bt_ioerror_rl, rlmsg))
134		return;
135
136	va_start(args, fmt);
137	vaf.fmt = fmt;
138	vaf.va = &args;
139	__xfs_printk(KERN_ALERT, mp, &vaf);
140	va_end(args);
141}
142