1 /*
2 * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 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, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
22 *
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
25 *
26 * http://www.sgi.com
27 *
28 * For further information regarding this notice, see:
29 *
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
31 */
32
33 #include "debug.h"
34
35 #include <asm/page.h>
36 #include <linux/sched.h>
37 #include <linux/kernel.h>
38
39 int doass = 1;
40 static char message[256]; /* keep it off the stack */
41 static spinlock_t xfs_err_lock = SPIN_LOCK_UNLOCKED;
42
43 /* Translate from CE_FOO to KERN_FOO, err_level(CE_FOO) == KERN_FOO */
44 #define XFS_MAX_ERR_LEVEL 7
45 #define XFS_ERR_MASK ((1 << 3) - 1)
46 static char *err_level[XFS_MAX_ERR_LEVEL+1] =
47 {KERN_EMERG, KERN_ALERT, KERN_CRIT,
48 KERN_ERR, KERN_WARNING, KERN_NOTICE,
49 KERN_INFO, KERN_DEBUG};
50
51 void
assfail(char * a,char * f,int l)52 assfail(char *a, char *f, int l)
53 {
54 printk("XFS assertion failed: %s, file: %s, line: %d\n", a, f, l);
55 BUG();
56 }
57
58 #if ((defined(DEBUG) || defined(INDUCE_IO_ERRROR)) && !defined(NO_WANT_RANDOM))
59
60 unsigned long
random(void)61 random(void)
62 {
63 static unsigned long RandomValue = 1;
64 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
65 register long rv = RandomValue;
66 register long lo;
67 register long hi;
68
69 hi = rv / 127773;
70 lo = rv % 127773;
71 rv = 16807 * lo - 2836 * hi;
72 if( rv <= 0 ) rv += 2147483647;
73 return( RandomValue = rv );
74 }
75
76 int
get_thread_id(void)77 get_thread_id(void)
78 {
79 return current->pid;
80 }
81
82 #endif /* DEBUG || INDUCE_IO_ERRROR || !NO_WANT_RANDOM */
83
84 void
cmn_err(register int level,char * fmt,...)85 cmn_err(register int level, char *fmt, ...)
86 {
87 char *fp = fmt;
88 int len;
89 ulong flags;
90 va_list ap;
91
92 level &= XFS_ERR_MASK;
93 if (level > XFS_MAX_ERR_LEVEL)
94 level = XFS_MAX_ERR_LEVEL;
95 spin_lock_irqsave(&xfs_err_lock,flags);
96 va_start(ap, fmt);
97 if (*fmt == '!') fp++;
98 len = vsprintf(message, fp, ap);
99 if (message[len-1] != '\n')
100 strcat(message, "\n");
101 printk("%s%s", err_level[level], message);
102 va_end(ap);
103 spin_unlock_irqrestore(&xfs_err_lock,flags);
104
105 if (level == CE_PANIC)
106 BUG();
107 }
108
109
110 void
icmn_err(register int level,char * fmt,va_list ap)111 icmn_err(register int level, char *fmt, va_list ap)
112 {
113 ulong flags;
114 int len;
115
116 level &= XFS_ERR_MASK;
117 if(level > XFS_MAX_ERR_LEVEL)
118 level = XFS_MAX_ERR_LEVEL;
119 spin_lock_irqsave(&xfs_err_lock,flags);
120 len = vsprintf(message, fmt, ap);
121 if (message[len-1] != '\n')
122 strcat(message, "\n");
123 spin_unlock_irqrestore(&xfs_err_lock,flags);
124 printk("%s%s", err_level[level], message);
125 if (level == CE_PANIC)
126 BUG();
127 }
128