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         printk("%sXFS: %pV\n", level, vaf);
  40 }
  41
  42 void xfs_printk(
  43         const char              *level,
  44         const struct xfs_mount  *mp,
  45         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(level, mp, &vaf);
  56         va_end(args);
  57 }
  58
  59 #define define_xfs_printk_level(func, kern_level)               \
  60 void func(const struct xfs_mount *mp, const char *fmt, ...)     \
  61 {                                                               \
  62         struct va_format        vaf;                            \
  63         va_list                 args;                           \
  64                                                                 \
  65         va_start(args, fmt);                                    \
  66                                                                 \
  67         vaf.fmt = fmt;                                          \
  68         vaf.va = &args;                                         \
  69                                                                 \
  70         __xfs_printk(kern_level, mp, &vaf);                     \
  71         va_end(args);                                           \
  72 }                                                               \
  73
  74 define_xfs_printk_level(xfs_emerg, KERN_EMERG);
  75 define_xfs_printk_level(xfs_alert, KERN_ALERT);
  76 define_xfs_printk_level(xfs_crit, KERN_CRIT);
  77 define_xfs_printk_level(xfs_err, KERN_ERR);
  78 define_xfs_printk_level(xfs_warn, KERN_WARNING);
  79 define_xfs_printk_level(xfs_notice, KERN_NOTICE);
  80 define_xfs_printk_level(xfs_info, KERN_INFO);
  81 #ifdef DEBUG
  82 define_xfs_printk_level(xfs_debug, KERN_DEBUG);
  83 #endif
  84
  85 void
  86 xfs_alert_tag(
  87         const struct xfs_mount  *mp,
  88         int                     panic_tag,
  89         const char              *fmt, ...)
  90 {
  91         struct va_format        vaf;
  92         va_list                 args;
  93         int                     do_panic = 0;
  94
  95         if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
  96                 xfs_printk(KERN_ALERT, mp,
  97                         "XFS: Transforming an alert into a BUG.");
  98                 do_panic = 1;
  99         }
 100
 101         va_start(args, fmt);
 102
 103         vaf.fmt = fmt;
 104         vaf.va = &args;
 105
 106         __xfs_printk(KERN_ALERT, mp, &vaf);
 107         va_end(args);
 108
 109         BUG_ON(do_panic);
 110 }
 111
 112 void
 113 assfail(char *expr, char *file, int line)
 114 {
 115         xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
 116                 expr, file, line);
 117         BUG();
 118 }
 119
 120 void
 121 xfs_hex_dump(void *p, int length)
 122 {
 123         print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
 124 }