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_log_format.h"
  21 #include "xfs_trans_resv.h"
  22 #include "xfs_sb.h"
  23 #include "xfs_ag.h"
  24 #include "xfs_mount.h"
  25
  26 /*
  27  * XFS logging functions
  28  */
  29 static void
  30 __xfs_printk(
  31         const char              *level,
  32         const struct xfs_mount  *mp,
  33         struct va_format        *vaf)
  34 {
  35         if (mp && mp->m_fsname) {
  36                 printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf);
  37                 return;
  38         }
  39         printk("%sXFS: %pV\n", level, vaf);
  40 }
  41
  42 #define define_xfs_printk_level(func, kern_level)               \
  43 void func(const struct xfs_mount *mp, const char *fmt, ...)     \
  44 {                                                               \
  45         struct va_format        vaf;                            \
  46         va_list                 args;                           \
  47                                                                 \
  48         va_start(args, fmt);                                    \
  49                                                                 \
  50         vaf.fmt = fmt;                                          \
  51         vaf.va = &args;                                         \
  52                                                                 \
  53         __xfs_printk(kern_level, mp, &vaf);                     \
  54         va_end(args);                                           \
  55 }                                                               \
  56
  57 define_xfs_printk_level(xfs_emerg, KERN_EMERG);
  58 define_xfs_printk_level(xfs_alert, KERN_ALERT);
  59 define_xfs_printk_level(xfs_crit, KERN_CRIT);
  60 define_xfs_printk_level(xfs_err, KERN_ERR);
  61 define_xfs_printk_level(xfs_warn, KERN_WARNING);
  62 define_xfs_printk_level(xfs_notice, KERN_NOTICE);
  63 define_xfs_printk_level(xfs_info, KERN_INFO);
  64 #ifdef DEBUG
  65 define_xfs_printk_level(xfs_debug, KERN_DEBUG);
  66 #endif
  67
  68 void
  69 xfs_alert_tag(
  70         const struct xfs_mount  *mp,
  71         int                     panic_tag,
  72         const char              *fmt, ...)
  73 {
  74         struct va_format        vaf;
  75         va_list                 args;
  76         int                     do_panic = 0;
  77
  78         if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
  79                 xfs_alert(mp, "Transforming an alert into a BUG.");
  80                 do_panic = 1;
  81         }
  82
  83         va_start(args, fmt);
  84
  85         vaf.fmt = fmt;
  86         vaf.va = &args;
  87
  88         __xfs_printk(KERN_ALERT, mp, &vaf);
  89         va_end(args);
  90
  91         BUG_ON(do_panic);
  92 }
  93
  94 void
  95 asswarn(char *expr, char *file, int line)
  96 {
  97         xfs_warn(NULL, "Assertion failed: %s, file: %s, line: %d",
  98                 expr, file, line);
  99         WARN_ON(1);
 100 }
 101
 102 void
 103 assfail(char *expr, char *file, int line)
 104 {
 105         xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
 106                 expr, file, line);
 107         BUG();
 108 }
 109
 110 void
 111 xfs_hex_dump(void *p, int length)
 112 {
 113         print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
 114 }