fs/xfs/support/debug.c

   1 /*
   2  * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it would be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write the Free Software Foundation,
  16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18 #include <xfs.h>
  19 #include "debug.h"
  20
  21 static char             message[1024];  /* keep it off the stack */
  22 static DEFINE_SPINLOCK(xfs_err_lock);
  23
  24 /* Translate from CE_FOO to KERN_FOO, err_level(CE_FOO) == KERN_FOO */
  25 #define XFS_MAX_ERR_LEVEL       7
  26 #define XFS_ERR_MASK            ((1 << 3) - 1)
  27 static const char * const       err_level[XFS_MAX_ERR_LEVEL+1] =
  28                                         {KERN_EMERG, KERN_ALERT, KERN_CRIT,
  29                                          KERN_ERR, KERN_WARNING, KERN_NOTICE,
  30                                          KERN_INFO, KERN_DEBUG};
  31
  32 void
  33 cmn_err(register int level, char *fmt, ...)
  34 {
  35         char    *fp = fmt;
  36         int     len;
  37         ulong   flags;
  38         va_list ap;
  39
  40         level &= XFS_ERR_MASK;
  41         if (level > XFS_MAX_ERR_LEVEL)
  42                 level = XFS_MAX_ERR_LEVEL;
  43         spin_lock_irqsave(&xfs_err_lock,flags);
  44         va_start(ap, fmt);
  45         if (*fmt == '!') fp++;
  46         len = vsnprintf(message, sizeof(message), fp, ap);
  47         if (len >= sizeof(message))
  48                 len = sizeof(message) - 1;
  49         if (message[len-1] == '\n')
  50                 message[len-1] = 0;
  51         printk("%s%s\n", err_level[level], message);
  52         va_end(ap);
  53         spin_unlock_irqrestore(&xfs_err_lock,flags);
  54         BUG_ON(level == CE_PANIC);
  55 }
  56
  57 void
  58 icmn_err(register int level, char *fmt, va_list ap)
  59 {
  60         ulong   flags;
  61         int     len;
  62
  63         level &= XFS_ERR_MASK;
  64         if(level > XFS_MAX_ERR_LEVEL)
  65                 level = XFS_MAX_ERR_LEVEL;
  66         spin_lock_irqsave(&xfs_err_lock,flags);
  67         len = vsnprintf(message, sizeof(message), fmt, ap);
  68         if (len >= sizeof(message))
  69                 len = sizeof(message) - 1;
  70         if (message[len-1] == '\n')
  71                 message[len-1] = 0;
  72         printk("%s%s\n", err_level[level], message);
  73         spin_unlock_irqrestore(&xfs_err_lock,flags);
  74         BUG_ON(level == CE_PANIC);
  75 }
  76
  77 void
  78 assfail(char *expr, char *file, int line)
  79 {
  80         printk("Assertion failed: %s, file: %s, line: %d\n", expr, file, line);
  81         BUG();
  82 }
  83
  84 void
  85 xfs_hex_dump(void *p, int length)
  86 {
  87         print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_OFFSET, 16, 1, p, length, 1);
  88 }