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