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_inum.h"
  23 #include "xfs_trans.h"
  24 #include "xfs_sb.h"
  25 #include "xfs_ag.h"
  26 #include "xfs_mount.h"
  27
  28 /*
  29  * XFS logging functions
  30  */
  31 static void
  32 __xfs_printk(
  33         const char              *level,
  34         const struct xfs_mount  *mp,
  35         struct va_format        *vaf)
  36 {
  37         if (mp && mp->m_fsname) {
  38                 printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf);
  39                 return;
  40         }
  41         printk("%sXFS: %pV\n", level, vaf);
  42 }
  43
  44 #define define_xfs_printk_level(func, kern_level)               \
  45 void func(const struct xfs_mount *mp, const char *fmt, ...)     \
  46 {                                                               \
  47         struct va_format        vaf;                            \
  48         va_list                 args;                           \
  49                                                                 \
  50         va_start(args, fmt);                                    \
  51                                                                 \
  52         vaf.fmt = fmt;                                          \
  53         vaf.va = &args;                                         \
  54                                                                 \
  55         __xfs_printk(kern_level, mp, &vaf);                     \
  56         va_end(args);                                           \
  57 }                                                               \
  58
  59 define_xfs_printk_level(xfs_emerg, KERN_EMERG);
  60 define_xfs_printk_level(xfs_alert, KERN_ALERT);
  61 define_xfs_printk_level(xfs_crit, KERN_CRIT);
  62 define_xfs_printk_level(xfs_err, KERN_ERR);
  63 define_xfs_printk_level(xfs_warn, KERN_WARNING);
  64 define_xfs_printk_level(xfs_notice, KERN_NOTICE);
  65 define_xfs_printk_level(xfs_info, KERN_INFO);
  66 #ifdef DEBUG
  67 define_xfs_printk_level(xfs_debug, KERN_DEBUG);
  68 #endif
  69
  70 void
  71 xfs_alert_tag(
  72         const struct xfs_mount  *mp,
  73         int                     panic_tag,
  74         const char              *fmt, ...)
  75 {
  76         struct va_format        vaf;
  77         va_list                 args;
  78         int                     do_panic = 0;
  79
  80         if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
  81                 xfs_alert(mp, "Transforming an alert into a BUG.");
  82                 do_panic = 1;
  83         }
  84
  85         va_start(args, fmt);
  86
  87         vaf.fmt = fmt;
  88         vaf.va = &args;
  89
  90         __xfs_printk(KERN_ALERT, mp, &vaf);
  91         va_end(args);
  92
  93         BUG_ON(do_panic);
  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         BUG();
 102 }
 103
 104 void
 105 xfs_hex_dump(void *p, int length)
 106 {
 107         print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
 108 }