Root/
| 1 | /* |
| 2 | * debug.c - NTFS kernel debug support. Part of the Linux-NTFS project. |
| 3 | * |
| 4 | * Copyright (c) 2001-2004 Anton Altaparmakov |
| 5 | * |
| 6 | * This program/include file is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License as published |
| 8 | * by the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program/include file is distributed in the hope that it will be |
| 12 | * useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
| 13 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program (in the main directory of the Linux-NTFS |
| 18 | * distribution in the file COPYING); if not, write to the Free Software |
| 19 | * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #include "debug.h" |
| 23 | |
| 24 | /* |
| 25 | * A static buffer to hold the error string being displayed and a spinlock |
| 26 | * to protect concurrent accesses to it. |
| 27 | */ |
| 28 | static char err_buf[1024]; |
| 29 | static DEFINE_SPINLOCK(err_buf_lock); |
| 30 | |
| 31 | /** |
| 32 | * __ntfs_warning - output a warning to the syslog |
| 33 | * @function: name of function outputting the warning |
| 34 | * @sb: super block of mounted ntfs filesystem |
| 35 | * @fmt: warning string containing format specifications |
| 36 | * @...: a variable number of arguments specified in @fmt |
| 37 | * |
| 38 | * Outputs a warning to the syslog for the mounted ntfs filesystem described |
| 39 | * by @sb. |
| 40 | * |
| 41 | * @fmt and the corresponding @... is printf style format string containing |
| 42 | * the warning string and the corresponding format arguments, respectively. |
| 43 | * |
| 44 | * @function is the name of the function from which __ntfs_warning is being |
| 45 | * called. |
| 46 | * |
| 47 | * Note, you should be using debug.h::ntfs_warning(@sb, @fmt, @...) instead |
| 48 | * as this provides the @function parameter automatically. |
| 49 | */ |
| 50 | void __ntfs_warning(const char *function, const struct super_block *sb, |
| 51 | const char *fmt, ...) |
| 52 | { |
| 53 | va_list args; |
| 54 | int flen = 0; |
| 55 | |
| 56 | #ifndef DEBUG |
| 57 | if (!printk_ratelimit()) |
| 58 | return; |
| 59 | #endif |
| 60 | if (function) |
| 61 | flen = strlen(function); |
| 62 | spin_lock(&err_buf_lock); |
| 63 | va_start(args, fmt); |
| 64 | vsnprintf(err_buf, sizeof(err_buf), fmt, args); |
| 65 | va_end(args); |
| 66 | if (sb) |
| 67 | printk(KERN_ERR "NTFS-fs warning (device %s): %s(): %s\n", |
| 68 | sb->s_id, flen ? function : "", err_buf); |
| 69 | else |
| 70 | printk(KERN_ERR "NTFS-fs warning: %s(): %s\n", |
| 71 | flen ? function : "", err_buf); |
| 72 | spin_unlock(&err_buf_lock); |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * __ntfs_error - output an error to the syslog |
| 77 | * @function: name of function outputting the error |
| 78 | * @sb: super block of mounted ntfs filesystem |
| 79 | * @fmt: error string containing format specifications |
| 80 | * @...: a variable number of arguments specified in @fmt |
| 81 | * |
| 82 | * Outputs an error to the syslog for the mounted ntfs filesystem described |
| 83 | * by @sb. |
| 84 | * |
| 85 | * @fmt and the corresponding @... is printf style format string containing |
| 86 | * the error string and the corresponding format arguments, respectively. |
| 87 | * |
| 88 | * @function is the name of the function from which __ntfs_error is being |
| 89 | * called. |
| 90 | * |
| 91 | * Note, you should be using debug.h::ntfs_error(@sb, @fmt, @...) instead |
| 92 | * as this provides the @function parameter automatically. |
| 93 | */ |
| 94 | void __ntfs_error(const char *function, const struct super_block *sb, |
| 95 | const char *fmt, ...) |
| 96 | { |
| 97 | va_list args; |
| 98 | int flen = 0; |
| 99 | |
| 100 | #ifndef DEBUG |
| 101 | if (!printk_ratelimit()) |
| 102 | return; |
| 103 | #endif |
| 104 | if (function) |
| 105 | flen = strlen(function); |
| 106 | spin_lock(&err_buf_lock); |
| 107 | va_start(args, fmt); |
| 108 | vsnprintf(err_buf, sizeof(err_buf), fmt, args); |
| 109 | va_end(args); |
| 110 | if (sb) |
| 111 | printk(KERN_ERR "NTFS-fs error (device %s): %s(): %s\n", |
| 112 | sb->s_id, flen ? function : "", err_buf); |
| 113 | else |
| 114 | printk(KERN_ERR "NTFS-fs error: %s(): %s\n", |
| 115 | flen ? function : "", err_buf); |
| 116 | spin_unlock(&err_buf_lock); |
| 117 | } |
| 118 | |
| 119 | #ifdef DEBUG |
| 120 | |
| 121 | /* If 1, output debug messages, and if 0, don't. */ |
| 122 | int debug_msgs = 0; |
| 123 | |
| 124 | void __ntfs_debug (const char *file, int line, const char *function, |
| 125 | const char *fmt, ...) |
| 126 | { |
| 127 | va_list args; |
| 128 | int flen = 0; |
| 129 | |
| 130 | if (!debug_msgs) |
| 131 | return; |
| 132 | if (function) |
| 133 | flen = strlen(function); |
| 134 | spin_lock(&err_buf_lock); |
| 135 | va_start(args, fmt); |
| 136 | vsnprintf(err_buf, sizeof(err_buf), fmt, args); |
| 137 | va_end(args); |
| 138 | printk(KERN_DEBUG "NTFS-fs DEBUG (%s, %d): %s(): %s\n", file, line, |
| 139 | flen ? function : "", err_buf); |
| 140 | spin_unlock(&err_buf_lock); |
| 141 | } |
| 142 | |
| 143 | /* Dump a runlist. Caller has to provide synchronisation for @rl. */ |
| 144 | void ntfs_debug_dump_runlist(const runlist_element *rl) |
| 145 | { |
| 146 | int i; |
| 147 | const char *lcn_str[5] = { "LCN_HOLE ", "LCN_RL_NOT_MAPPED", |
| 148 | "LCN_ENOENT ", "LCN_unknown " }; |
| 149 | |
| 150 | if (!debug_msgs) |
| 151 | return; |
| 152 | printk(KERN_DEBUG "NTFS-fs DEBUG: Dumping runlist (values in hex):\n"); |
| 153 | if (!rl) { |
| 154 | printk(KERN_DEBUG "Run list not present.\n"); |
| 155 | return; |
| 156 | } |
| 157 | printk(KERN_DEBUG "VCN LCN Run length\n"); |
| 158 | for (i = 0; ; i++) { |
| 159 | LCN lcn = (rl + i)->lcn; |
| 160 | |
| 161 | if (lcn < (LCN)0) { |
| 162 | int index = -lcn - 1; |
| 163 | |
| 164 | if (index > -LCN_ENOENT - 1) |
| 165 | index = 3; |
| 166 | printk(KERN_DEBUG "%-16Lx %s %-16Lx%s\n", |
| 167 | (long long)(rl + i)->vcn, lcn_str[index], |
| 168 | (long long)(rl + i)->length, |
| 169 | (rl + i)->length ? "" : |
| 170 | " (runlist end)"); |
| 171 | } else |
| 172 | printk(KERN_DEBUG "%-16Lx %-16Lx %-16Lx%s\n", |
| 173 | (long long)(rl + i)->vcn, |
| 174 | (long long)(rl + i)->lcn, |
| 175 | (long long)(rl + i)->length, |
| 176 | (rl + i)->length ? "" : |
| 177 | " (runlist end)"); |
| 178 | if (!(rl + i)->length) |
| 179 | break; |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | #endif |
| 184 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9
