2 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
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.
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.
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
22 static char message[1024]; /* keep it off the stack */
23 static DEFINE_SPINLOCK(xfs_err_lock);
25 /* Translate from CE_FOO to KERN_FOO, err_level(CE_FOO) == KERN_FOO */
26 #define XFS_MAX_ERR_LEVEL 7
27 #define XFS_ERR_MASK ((1 << 3) - 1)
28 static const char * const err_level[XFS_MAX_ERR_LEVEL+1] =
29 {KERN_EMERG, KERN_ALERT, KERN_CRIT,
30 KERN_ERR, KERN_WARNING, KERN_NOTICE,
31 KERN_INFO, KERN_DEBUG};
34 cmn_err(register int level, char *fmt, ...)
41 level &= XFS_ERR_MASK;
42 if (level > XFS_MAX_ERR_LEVEL)
43 level = XFS_MAX_ERR_LEVEL;
44 spin_lock_irqsave(&xfs_err_lock,flags);
46 if (*fmt == '!') fp++;
47 len = vsnprintf(message, sizeof(message), fp, ap);
48 if (len >= sizeof(message))
49 len = sizeof(message) - 1;
50 if (message[len-1] == '\n')
52 printk("%s%s\n", err_level[level], message);
54 spin_unlock_irqrestore(&xfs_err_lock,flags);
55 BUG_ON(level == CE_PANIC);
59 icmn_err(register int level, char *fmt, va_list ap)
64 level &= XFS_ERR_MASK;
65 if(level > XFS_MAX_ERR_LEVEL)
66 level = XFS_MAX_ERR_LEVEL;
67 spin_lock_irqsave(&xfs_err_lock,flags);
68 len = vsnprintf(message, sizeof(message), fmt, ap);
69 if (len >= sizeof(message))
70 len = sizeof(message) - 1;
71 if (message[len-1] == '\n')
73 printk("%s%s\n", err_level[level], message);
74 spin_unlock_irqrestore(&xfs_err_lock,flags);
75 BUG_ON(level == CE_PANIC);
79 assfail(char *expr, char *file, int line)
81 printk("Assertion failed: %s, file: %s, line: %d\n", expr, file, line);
85 #if ((defined(DEBUG) || defined(INDUCE_IO_ERRROR)) && !defined(NO_WANT_RANDOM))
86 unsigned long random(void)
88 static unsigned long RandomValue = 1;
89 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
90 register long rv = RandomValue;
96 rv = 16807 * lo - 2836 * hi;
97 if (rv <= 0) rv += 2147483647;
98 return RandomValue = rv;
100 #endif /* DEBUG || INDUCE_IO_ERRROR || !NO_WANT_RANDOM */