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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | // SPDX-License-Identifier: GPL-2.0-or-later /* * debug.c - NTFS kernel debug support. Part of the Linux-NTFS project. * * Copyright (c) 2001-2004 Anton Altaparmakov */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include "debug.h" /** * __ntfs_warning - output a warning to the syslog * @function: name of function outputting the warning * @sb: super block of mounted ntfs filesystem * @fmt: warning string containing format specifications * @...: a variable number of arguments specified in @fmt * * Outputs a warning to the syslog for the mounted ntfs filesystem described * by @sb. * * @fmt and the corresponding @... is printf style format string containing * the warning string and the corresponding format arguments, respectively. * * @function is the name of the function from which __ntfs_warning is being * called. * * Note, you should be using debug.h::ntfs_warning(@sb, @fmt, @...) instead * as this provides the @function parameter automatically. */ void __ntfs_warning(const char *function, const struct super_block *sb, const char *fmt, ...) { struct va_format vaf; va_list args; int flen = 0; #ifndef DEBUG if (!printk_ratelimit()) return; #endif if (function) flen = strlen(function); va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; if (sb) pr_warn("(device %s): %s(): %pV\n", sb->s_id, flen ? function : "", &vaf); else pr_warn("%s(): %pV\n", flen ? function : "", &vaf); va_end(args); } /** * __ntfs_error - output an error to the syslog * @function: name of function outputting the error * @sb: super block of mounted ntfs filesystem * @fmt: error string containing format specifications * @...: a variable number of arguments specified in @fmt * * Outputs an error to the syslog for the mounted ntfs filesystem described * by @sb. * * @fmt and the corresponding @... is printf style format string containing * the error string and the corresponding format arguments, respectively. * * @function is the name of the function from which __ntfs_error is being * called. * * Note, you should be using debug.h::ntfs_error(@sb, @fmt, @...) instead * as this provides the @function parameter automatically. */ void __ntfs_error(const char *function, const struct super_block *sb, const char *fmt, ...) { struct va_format vaf; va_list args; int flen = 0; #ifndef DEBUG if (!printk_ratelimit()) return; #endif if (function) flen = strlen(function); va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; if (sb) pr_err("(device %s): %s(): %pV\n", sb->s_id, flen ? function : "", &vaf); else pr_err("%s(): %pV\n", flen ? function : "", &vaf); va_end(args); } #ifdef DEBUG /* If 1, output debug messages, and if 0, don't. */ int debug_msgs = 0; void __ntfs_debug(const char *file, int line, const char *function, const char *fmt, ...) { struct va_format vaf; va_list args; int flen = 0; if (!debug_msgs) return; if (function) flen = strlen(function); va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; pr_debug("(%s, %d): %s(): %pV", file, line, flen ? function : "", &vaf); va_end(args); } /* Dump a runlist. Caller has to provide synchronisation for @rl. */ void ntfs_debug_dump_runlist(const runlist_element *rl) { int i; const char *lcn_str[5] = { "LCN_HOLE ", "LCN_RL_NOT_MAPPED", "LCN_ENOENT ", "LCN_unknown " }; if (!debug_msgs) return; pr_debug("Dumping runlist (values in hex):\n"); if (!rl) { pr_debug("Run list not present.\n"); return; } pr_debug("VCN LCN Run length\n"); for (i = 0; ; i++) { LCN lcn = (rl + i)->lcn; if (lcn < (LCN)0) { int index = -lcn - 1; if (index > -LCN_ENOENT - 1) index = 3; pr_debug("%-16Lx %s %-16Lx%s\n", (long long)(rl + i)->vcn, lcn_str[index], (long long)(rl + i)->length, (rl + i)->length ? "" : " (runlist end)"); } else pr_debug("%-16Lx %-16Lx %-16Lx%s\n", (long long)(rl + i)->vcn, (long long)(rl + i)->lcn, (long long)(rl + i)->length, (rl + i)->length ? "" : " (runlist end)"); if (!(rl + i)->length) break; } } #endif |