projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 7b718769 NS |
2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. | |
| 1da177e4 | 4 | * |
| 7b718769 NS |
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 | |
| 1da177e4 LT |
7 | * published by the Free Software Foundation. |
| 8 | * | |
| 7b718769 NS |
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. | |
| 1da177e4 | 13 | * |
| 7b718769 NS |
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 | |
| 1da177e4 | 17 | */ |
| 1da177e4 | 18 | #include "debug.h" |
| cde410a9 | 19 | #include "spin.h" |
| 1da177e4 LT |
20 | #include <asm/page.h> |
| 21 | #include <linux/sched.h> | |
| 22 | #include <linux/kernel.h> | |
| 23 | ||
| 1da177e4 LT |
24 | static char message[256]; /* keep it off the stack */ |
| 25 | static 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) | |
| 30 | static 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 | ||
| 35 | void | |
| 36 | assfail(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 | ||
| 44 | unsigned long | |
| 45 | random(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 | ||
| 60 | int | |
| 61 | get_thread_id(void) | |
| 62 | { | |
| 63 | return current->pid; | |
| 64 | } | |
| 65 | ||
| 66 | #endif /* DEBUG || INDUCE_IO_ERRROR || !NO_WANT_RANDOM */ | |
| 67 | ||
| 68 | void | |
| 69 | cmn_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 | ||
| 94 | void | |
| 95 | icmn_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 | } |