kernel/fs/xfs/xfs_message.c

   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  */
  28 static 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)               \
  42 void 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
  56 define_xfs_printk_level(xfs_emerg, KERN_EMERG);
  57 define_xfs_printk_level(xfs_alert, KERN_ALERT);
  58 define_xfs_printk_level(xfs_crit, KERN_CRIT);
  59 define_xfs_printk_level(xfs_err, KERN_ERR);
  60 define_xfs_printk_level(xfs_warn, KERN_WARNING);
  61 define_xfs_printk_level(xfs_notice, KERN_NOTICE);
  62 define_xfs_printk_level(xfs_info, KERN_INFO);
  63 #ifdef DEBUG
  64 define_xfs_printk_level(xfs_debug, KERN_DEBUG);
  65 #endif
  66
  67 void
  68 xfs_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
  93 void
  94 asswarn(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
 101 void
 102 assfail(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
 109 void
 110 xfs_hex_dump(void *p, int length)
 111 {
 112         print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
 113 }