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Linux/fs/xfs/xfs_message.c

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  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_format.h"
 10 #include "xfs_log_format.h"
 11 #include "xfs_trans_resv.h"
 12 #include "xfs_mount.h"
 13 
 14 /*
 15  * XFS logging functions
 16  */
 17 static 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_fsname) {
 24                 printk("%sXFS (%s): %pV\n", level, mp->m_fsname, 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
 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
 89 asswarn(char *expr, char *file, int line)
 90 {
 91         xfs_warn(NULL, "Assertion failed: %s, file: %s, line: %d",
 92                 expr, file, line);
 93         WARN_ON(1);
 94 }
 95 
 96 void
 97 assfail(char *expr, char *file, int line)
 98 {
 99         xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
100                 expr, file, line);
101         if (xfs_globals.bug_on_assert)
102                 BUG();
103         else
104                 WARN_ON(1);
105 }
106 
107 void
108 xfs_hex_dump(void *p, int length)
109 {
110         print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
111 }
112 

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