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 */
17 static void
__xfs_printk(const char * level,const struct xfs_mount * mp,struct va_format * vaf)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) \
31 void 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
51 define_xfs_printk_level(xfs_emerg, KERN_EMERG);
52 define_xfs_printk_level(xfs_alert, KERN_ALERT);
53 define_xfs_printk_level(xfs_crit, KERN_CRIT);
54 define_xfs_printk_level(xfs_err, KERN_ERR);
55 define_xfs_printk_level(xfs_warn, KERN_WARNING);
56 define_xfs_printk_level(xfs_notice, KERN_NOTICE);
57 define_xfs_printk_level(xfs_info, KERN_INFO);
58 #ifdef DEBUG
59 define_xfs_printk_level(xfs_debug, KERN_DEBUG);
60 #endif
61
62 void
xfs_alert_tag(const struct xfs_mount * mp,int panic_tag,const char * fmt,...)63 xfs_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
88 void
asswarn(struct xfs_mount * mp,char * expr,char * file,int line)89 asswarn(
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
100 void
assfail(struct xfs_mount * mp,char * expr,char * file,int line)101 assfail(
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
115 void
xfs_hex_dump(const void * p,int length)116 xfs_hex_dump(const void *p, int length)
117 {
118 print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_OFFSET, 16, 1, p, length, 1);
119 }
120
121 void
xfs_buf_alert_ratelimited(struct xfs_buf * bp,const char * rlmsg,const char * fmt,...)122 xfs_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