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 int
  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                 return printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf);
  39         return printk("%sXFS: %pV\n", level, vaf);
  40 }
  41
  42 int 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         int                      r;
  50
  51         va_start(args, fmt);
  52
  53         vaf.fmt = fmt;
  54         vaf.va = &args;
  55
  56         r = __xfs_printk(level, mp, &vaf);
  57         va_end(args);
  58
  59         return r;
  60 }
  61
  62 #define define_xfs_printk_level(func, kern_level)               \
  63 int func(const struct xfs_mount *mp, const char *fmt, ...)      \
  64 {                                                               \
  65         struct va_format        vaf;                            \
  66         va_list                 args;                           \
  67         int                     r;                              \
  68                                                                 \
  69         va_start(args, fmt);                                    \
  70                                                                 \
  71         vaf.fmt = fmt;                                          \
  72         vaf.va = &args;                                         \
  73                                                                 \
  74         r = __xfs_printk(kern_level, mp, &vaf);                 \
  75         va_end(args);                                           \
  76                                                                 \
  77         return r;                                               \
  78 }                                                               \
  79
  80 define_xfs_printk_level(xfs_emerg, KERN_EMERG);
  81 define_xfs_printk_level(xfs_alert, KERN_ALERT);
  82 define_xfs_printk_level(xfs_crit, KERN_CRIT);
  83 define_xfs_printk_level(xfs_err, KERN_ERR);
  84 define_xfs_printk_level(xfs_warn, KERN_WARNING);
  85 define_xfs_printk_level(xfs_notice, KERN_NOTICE);
  86 define_xfs_printk_level(xfs_info, KERN_INFO);
  87 #ifdef DEBUG
  88 define_xfs_printk_level(xfs_debug, KERN_DEBUG);
  89 #endif
  90
  91 int
  92 xfs_alert_tag(
  93         const struct xfs_mount  *mp,
  94         int                     panic_tag,
  95         const char              *fmt, ...)
  96 {
  97         struct va_format        vaf;
  98         va_list                 args;
  99         int                     do_panic = 0;
 100         int                     r;
 101
 102         if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
 103                 xfs_printk(KERN_ALERT, mp,
 104                         "XFS: Transforming an alert into a BUG.");
 105                 do_panic = 1;
 106         }
 107
 108         va_start(args, fmt);
 109
 110         vaf.fmt = fmt;
 111         vaf.va = &args;
 112
 113         r = __xfs_printk(KERN_ALERT, mp, &vaf);
 114         va_end(args);
 115
 116         BUG_ON(do_panic);
 117
 118         return r;
 119 }
 120
 121 void
 122 assfail(char *expr, char *file, int line)
 123 {
 124         xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
 125                 expr, file, line);
 126         BUG();
 127 }
 128
 129 void
 130 xfs_hex_dump(void *p, int length)
 131 {
 132         print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
 133 }