Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 "debug.h"
19#include "spin.h"
20#include <asm/page.h>
21#include <linux/sched.h>
22#include <linux/kernel.h>
23
24static char message[256]; /* keep it off the stack */
25static DEFINE_SPINLOCK(xfs_err_lock);
26
27/* Translate from CE_FOO to KERN_FOO, err_level(CE_FOO) == KERN_FOO */
28#define XFS_MAX_ERR_LEVEL 7
29#define XFS_ERR_MASK ((1 << 3) - 1)
30static char *err_level[XFS_MAX_ERR_LEVEL+1] =
31 {KERN_EMERG, KERN_ALERT, KERN_CRIT,
32 KERN_ERR, KERN_WARNING, KERN_NOTICE,
33 KERN_INFO, KERN_DEBUG};
34
35void
36assfail(char *a, char *f, int l)
37{
38 printk("XFS assertion failed: %s, file: %s, line: %d\n", a, f, l);
39 BUG();
40}
41
42#if ((defined(DEBUG) || defined(INDUCE_IO_ERRROR)) && !defined(NO_WANT_RANDOM))
43
44unsigned long
45random(void)
46{
47 static unsigned long RandomValue = 1;
48 /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
49 register long rv = RandomValue;
50 register long lo;
51 register long hi;
52
53 hi = rv / 127773;
54 lo = rv % 127773;
55 rv = 16807 * lo - 2836 * hi;
56 if( rv <= 0 ) rv += 2147483647;
57 return( RandomValue = rv );
58}
59
60int
61get_thread_id(void)
62{
63 return current->pid;
64}
65
66#endif /* DEBUG || INDUCE_IO_ERRROR || !NO_WANT_RANDOM */
67
68void
69cmn_err(register int level, char *fmt, ...)
70{
71 char *fp = fmt;
72 int len;
73 ulong flags;
74 va_list ap;
75
76 level &= XFS_ERR_MASK;
77 if (level > XFS_MAX_ERR_LEVEL)
78 level = XFS_MAX_ERR_LEVEL;
79 spin_lock_irqsave(&xfs_err_lock,flags);
80 va_start(ap, fmt);
81 if (*fmt == '!') fp++;
82 len = vsprintf(message, fp, ap);
83 if (message[len-1] != '\n')
84 strcat(message, "\n");
85 printk("%s%s", err_level[level], message);
86 va_end(ap);
87 spin_unlock_irqrestore(&xfs_err_lock,flags);
88
89 if (level == CE_PANIC)
90 BUG();
91}
92
93
94void
95icmn_err(register int level, char *fmt, va_list ap)
96{
97 ulong flags;
98 int len;
99
100 level &= XFS_ERR_MASK;
101 if(level > XFS_MAX_ERR_LEVEL)
102 level = XFS_MAX_ERR_LEVEL;
103 spin_lock_irqsave(&xfs_err_lock,flags);
104 len = vsprintf(message, fmt, ap);
105 if (message[len-1] != '\n')
106 strcat(message, "\n");
107 spin_unlock_irqrestore(&xfs_err_lock,flags);
108 printk("%s%s", err_level[level], message);
109 if (level == CE_PANIC)
110 BUG();
111}