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