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