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Fix xfs debug build breakage by pushing xfs_error.h after
[linux-2.6-omap-h63xx.git] / 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 /* xfs_mount.h drags a lot of crap in, sorry.. */
22 #include "xfs_sb.h"
23 #include "xfs_inum.h"
24 #include "xfs_ag.h"
25 #include "xfs_dmapi.h"
26 #include "xfs_mount.h"
27 #include "xfs_error.h"
28
29 static char             message[1024];  /* keep it off the stack */
30 static DEFINE_SPINLOCK(xfs_err_lock);
31
32 /* Translate from CE_FOO to KERN_FOO, err_level(CE_FOO) == KERN_FOO */
33 #define XFS_MAX_ERR_LEVEL       7
34 #define XFS_ERR_MASK            ((1 << 3) - 1)
35 static const char * const       err_level[XFS_MAX_ERR_LEVEL+1] =
36                                         {KERN_EMERG, KERN_ALERT, KERN_CRIT,
37                                          KERN_ERR, KERN_WARNING, KERN_NOTICE,
38                                          KERN_INFO, KERN_DEBUG};
39
40 void
41 cmn_err(register int level, char *fmt, ...)
42 {
43         char    *fp = fmt;
44         int     len;
45         ulong   flags;
46         va_list ap;
47
48         level &= XFS_ERR_MASK;
49         if (level > XFS_MAX_ERR_LEVEL)
50                 level = XFS_MAX_ERR_LEVEL;
51         spin_lock_irqsave(&xfs_err_lock,flags);
52         va_start(ap, fmt);
53         if (*fmt == '!') fp++;
54         len = vsnprintf(message, sizeof(message), fp, ap);
55         if (len >= sizeof(message))
56                 len = sizeof(message) - 1;
57         if (message[len-1] == '\n')
58                 message[len-1] = 0;
59         printk("%s%s\n", err_level[level], message);
60         va_end(ap);
61         spin_unlock_irqrestore(&xfs_err_lock,flags);
62         BUG_ON(level == CE_PANIC);
63 }
64
65 void
66 xfs_fs_vcmn_err(
67         int                     level,
68         struct xfs_mount        *mp,
69         char                    *fmt,
70         va_list                 ap)
71 {
72         unsigned long           flags;
73         int                     len = 0;
74
75         level &= XFS_ERR_MASK;
76         if (level > XFS_MAX_ERR_LEVEL)
77                 level = XFS_MAX_ERR_LEVEL;
78
79         spin_lock_irqsave(&xfs_err_lock,flags);
80
81         if (mp) {
82                 len = sprintf(message, "Filesystem \"%s\": ", mp->m_fsname);
83
84                 /*
85                  * Skip the printk if we can't print anything useful
86                  * due to an over-long device name.
87                  */
88                 if (len >= sizeof(message))
89                         goto out;
90         }
91
92         len = vsnprintf(message + len, sizeof(message) - len, fmt, ap);
93         if (len >= sizeof(message))
94                 len = sizeof(message) - 1;
95         if (message[len-1] == '\n')
96                 message[len-1] = 0;
97
98         printk("%s%s\n", err_level[level], message);
99  out:
100         spin_unlock_irqrestore(&xfs_err_lock,flags);
101
102         BUG_ON(level == CE_PANIC);
103 }
104
105 void
106 assfail(char *expr, char *file, int line)
107 {
108         printk("Assertion failed: %s, file: %s, line: %d\n", expr, file, line);
109         BUG();
110 }
111
112 void
113 xfs_hex_dump(void *p, int length)
114 {
115         print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
116 }