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159 lines
4.0 KiB
159 lines
4.0 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* debug.c - NTFS kernel debug support. Part of the Linux-NTFS project. |
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* |
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* Copyright (c) 2001-2004 Anton Altaparmakov |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include "debug.h" |
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/** |
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* __ntfs_warning - output a warning to the syslog |
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* @function: name of function outputting the warning |
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* @sb: super block of mounted ntfs filesystem |
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* @fmt: warning string containing format specifications |
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* @...: a variable number of arguments specified in @fmt |
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* |
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* Outputs a warning to the syslog for the mounted ntfs filesystem described |
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* by @sb. |
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* |
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* @fmt and the corresponding @... is printf style format string containing |
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* the warning string and the corresponding format arguments, respectively. |
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* |
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* @function is the name of the function from which __ntfs_warning is being |
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* called. |
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* |
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* Note, you should be using debug.h::ntfs_warning(@sb, @fmt, @...) instead |
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* as this provides the @function parameter automatically. |
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*/ |
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void __ntfs_warning(const char *function, const struct super_block *sb, |
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const char *fmt, ...) |
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{ |
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struct va_format vaf; |
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va_list args; |
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int flen = 0; |
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#ifndef DEBUG |
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if (!printk_ratelimit()) |
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return; |
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#endif |
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if (function) |
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flen = strlen(function); |
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va_start(args, fmt); |
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vaf.fmt = fmt; |
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vaf.va = &args; |
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if (sb) |
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pr_warn("(device %s): %s(): %pV\n", |
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sb->s_id, flen ? function : "", &vaf); |
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else |
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pr_warn("%s(): %pV\n", flen ? function : "", &vaf); |
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va_end(args); |
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} |
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/** |
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* __ntfs_error - output an error to the syslog |
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* @function: name of function outputting the error |
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* @sb: super block of mounted ntfs filesystem |
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* @fmt: error string containing format specifications |
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* @...: a variable number of arguments specified in @fmt |
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* |
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* Outputs an error to the syslog for the mounted ntfs filesystem described |
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* by @sb. |
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* |
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* @fmt and the corresponding @... is printf style format string containing |
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* the error string and the corresponding format arguments, respectively. |
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* |
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* @function is the name of the function from which __ntfs_error is being |
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* called. |
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* |
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* Note, you should be using debug.h::ntfs_error(@sb, @fmt, @...) instead |
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* as this provides the @function parameter automatically. |
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*/ |
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void __ntfs_error(const char *function, const struct super_block *sb, |
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const char *fmt, ...) |
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{ |
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struct va_format vaf; |
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va_list args; |
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int flen = 0; |
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#ifndef DEBUG |
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if (!printk_ratelimit()) |
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return; |
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#endif |
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if (function) |
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flen = strlen(function); |
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va_start(args, fmt); |
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vaf.fmt = fmt; |
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vaf.va = &args; |
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if (sb) |
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pr_err("(device %s): %s(): %pV\n", |
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sb->s_id, flen ? function : "", &vaf); |
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else |
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pr_err("%s(): %pV\n", flen ? function : "", &vaf); |
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va_end(args); |
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} |
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#ifdef DEBUG |
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/* If 1, output debug messages, and if 0, don't. */ |
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int debug_msgs = 0; |
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void __ntfs_debug(const char *file, int line, const char *function, |
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const char *fmt, ...) |
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{ |
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struct va_format vaf; |
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va_list args; |
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int flen = 0; |
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if (!debug_msgs) |
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return; |
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if (function) |
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flen = strlen(function); |
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va_start(args, fmt); |
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vaf.fmt = fmt; |
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vaf.va = &args; |
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pr_debug("(%s, %d): %s(): %pV", file, line, flen ? function : "", &vaf); |
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va_end(args); |
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} |
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/* Dump a runlist. Caller has to provide synchronisation for @rl. */ |
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void ntfs_debug_dump_runlist(const runlist_element *rl) |
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{ |
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int i; |
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const char *lcn_str[5] = { "LCN_HOLE ", "LCN_RL_NOT_MAPPED", |
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"LCN_ENOENT ", "LCN_unknown " }; |
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if (!debug_msgs) |
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return; |
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pr_debug("Dumping runlist (values in hex):\n"); |
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if (!rl) { |
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pr_debug("Run list not present.\n"); |
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return; |
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} |
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pr_debug("VCN LCN Run length\n"); |
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for (i = 0; ; i++) { |
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LCN lcn = (rl + i)->lcn; |
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if (lcn < (LCN)0) { |
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int index = -lcn - 1; |
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if (index > -LCN_ENOENT - 1) |
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index = 3; |
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pr_debug("%-16Lx %s %-16Lx%s\n", |
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(long long)(rl + i)->vcn, lcn_str[index], |
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(long long)(rl + i)->length, |
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(rl + i)->length ? "" : |
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" (runlist end)"); |
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} else |
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pr_debug("%-16Lx %-16Lx %-16Lx%s\n", |
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(long long)(rl + i)->vcn, |
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(long long)(rl + i)->lcn, |
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(long long)(rl + i)->length, |
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(rl + i)->length ? "" : |
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" (runlist end)"); |
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if (!(rl + i)->length) |
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break; |
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} |
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} |
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#endif
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