LXR linux/fs/xfs/xfs

   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_error.h"
  21#include "xfs_format.h"
  22#include "xfs_log_format.h"
  23#include "xfs_trans_resv.h"
  24#include "xfs_mount.h"
  25
  26/*
  27 * XFS logging functions
  28 */
  29static 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)               \
  43void func(const struct xfs_mount *mp, const char *fmt, ...)     \
  44{                                                               \
  45        struct va_format        vaf;                            \
  46        va_list                 args;                           \
  47        int                     level;                          \
  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        if (!kstrtoint(kern_level, 0, &level) &&                \
  58            level <= LOGLEVEL_ERR &&                            \
  59            xfs_error_level >= XFS_ERRLEVEL_HIGH)               \
  60                xfs_stack_trace();                              \
  61}                                                               \
  62
  63define_xfs_printk_level(xfs_emerg, KERN_EMERG);
  64define_xfs_printk_level(xfs_alert, KERN_ALERT);
  65define_xfs_printk_level(xfs_crit, KERN_CRIT);
  66define_xfs_printk_level(xfs_err, KERN_ERR);
  67define_xfs_printk_level(xfs_warn, KERN_WARNING);
  68define_xfs_printk_level(xfs_notice, KERN_NOTICE);
  69define_xfs_printk_level(xfs_info, KERN_INFO);
  70#ifdef DEBUG
  71define_xfs_printk_level(xfs_debug, KERN_DEBUG);
  72#endif
  73
  74void
  75xfs_alert_tag(
  76        const struct xfs_mount  *mp,
  77        int                     panic_tag,
  78        const char              *fmt, ...)
  79{
  80        struct va_format        vaf;
  81        va_list                 args;
  82        int                     do_panic = 0;
  83
  84        if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
  85                xfs_alert(mp, "Transforming an alert into a BUG.");
  86                do_panic = 1;
  87        }
  88
  89        va_start(args, fmt);
  90
  91        vaf.fmt = fmt;
  92        vaf.va = &args;
  93
  94        __xfs_printk(KERN_ALERT, mp, &vaf);
  95        va_end(args);
  96
  97        BUG_ON(do_panic);
  98}
  99
 100void
 101asswarn(char *expr, char *file, int line)
 102{
 103        xfs_warn(NULL, "Assertion failed: %s, file: %s, line: %d",
 104                expr, file, line);
 105        WARN_ON(1);
 106}
 107
 108void
 109assfail(char *expr, char *file, int line)
 110{
 111        xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
 112                expr, file, line);
 113        if (xfs_globals.bug_on_assert)
 114                BUG();
 115        else
 116                WARN_ON(1);
 117}
 118
 119void
 120xfs_hex_dump(void *p, int length)
 121{
 122        print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
 123}
 124