fs/xfs/linux-2.6/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 void xfs_printk(
  45         const char              *level,
  46         const struct xfs_mount  *mp,
  47         const char              *fmt, ...)
  48 {
  49         struct va_format        vaf;
  50         va_list                 args;
  51
  52         va_start(args, fmt);
  53
  54         vaf.fmt = fmt;
  55         vaf.va = &args;
  56
  57         __xfs_printk(level, mp, &vaf);
  58         va_end(args);
  59 }
  60
  61 #define define_xfs_printk_level(func, kern_level)               \
  62 void func(const struct xfs_mount *mp, const char *fmt, ...)     \
  63 {                                                               \
  64         struct va_format        vaf;                            \
  65         va_list                 args;                           \
  66                                                                 \
  67         va_start(args, fmt);                                    \
  68                                                                 \
  69         vaf.fmt = fmt;                                          \
  70         vaf.va = &args;                                         \
  71                                                                 \
  72         __xfs_printk(kern_level, mp, &vaf);                     \
  73         va_end(args);                                           \
  74 }                                                               \
  75
  76 define_xfs_printk_level(xfs_emerg, KERN_EMERG);
  77 define_xfs_printk_level(xfs_alert, KERN_ALERT);
  78 define_xfs_printk_level(xfs_crit, KERN_CRIT);
  79 define_xfs_printk_level(xfs_err, KERN_ERR);
  80 define_xfs_printk_level(xfs_warn, KERN_WARNING);
  81 define_xfs_printk_level(xfs_notice, KERN_NOTICE);
  82 define_xfs_printk_level(xfs_info, KERN_INFO);
  83 #ifdef DEBUG
  84 define_xfs_printk_level(xfs_debug, KERN_DEBUG);
  85 #endif
  86
  87 void
  88 xfs_alert_tag(
  89         const struct xfs_mount  *mp,
  90         int                     panic_tag,
  91         const char              *fmt, ...)
  92 {
  93         struct va_format        vaf;
  94         va_list                 args;
  95         int                     do_panic = 0;
  96
  97         if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
  98                 xfs_printk(KERN_ALERT, mp,
  99                         "XFS: Transforming an alert into a BUG.");
 100                 do_panic = 1;
 101         }
 102
 103         va_start(args, fmt);
 104
 105         vaf.fmt = fmt;
 106         vaf.va = &args;
 107
 108         __xfs_printk(KERN_ALERT, mp, &vaf);
 109         va_end(args);
 110
 111         BUG_ON(do_panic);
 112 }
 113
 114 void
 115 assfail(char *expr, char *file, int line)
 116 {
 117         xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
 118                 expr, file, line);
 119         BUG();
 120 }
 121
 122 void
 123 xfs_hex_dump(void *p, int length)
 124 {
 125         print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
 126 }