1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * debug.c - NTFS kernel debug support. Part of the Linux-NTFS project.
5 * Copyright (c) 2001-2004 Anton Altaparmakov
7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11 * __ntfs_warning - output a warning to the syslog
12 * @function: name of function outputting the warning
13 * @sb: super block of mounted ntfs filesystem
14 * @fmt: warning string containing format specifications
15 * @...: a variable number of arguments specified in @fmt
17 * Outputs a warning to the syslog for the mounted ntfs filesystem described
20 * @fmt and the corresponding @... is printf style format string containing
21 * the warning string and the corresponding format arguments, respectively.
23 * @function is the name of the function from which __ntfs_warning is being
26 * Note, you should be using debug.h::ntfs_warning(@sb, @fmt, @...) instead
27 * as this provides the @function parameter automatically.
29 void __ntfs_warning(const char *function, const struct super_block *sb,
37 if (!printk_ratelimit())
41 flen = strlen(function);
46 pr_warn("(device %s): %s(): %pV\n",
47 sb->s_id, flen ? function : "", &vaf);
49 pr_warn("%s(): %pV\n", flen ? function : "", &vaf);
54 * __ntfs_error - output an error to the syslog
55 * @function: name of function outputting the error
56 * @sb: super block of mounted ntfs filesystem
57 * @fmt: error string containing format specifications
58 * @...: a variable number of arguments specified in @fmt
60 * Outputs an error to the syslog for the mounted ntfs filesystem described
63 * @fmt and the corresponding @... is printf style format string containing
64 * the error string and the corresponding format arguments, respectively.
66 * @function is the name of the function from which __ntfs_error is being
69 * Note, you should be using debug.h::ntfs_error(@sb, @fmt, @...) instead
70 * as this provides the @function parameter automatically.
72 void __ntfs_error(const char *function, const struct super_block *sb,
80 if (!printk_ratelimit())
84 flen = strlen(function);
89 pr_err("(device %s): %s(): %pV\n",
90 sb->s_id, flen ? function : "", &vaf);
92 pr_err("%s(): %pV\n", flen ? function : "", &vaf);
98 /* If 1, output debug messages, and if 0, don't. */
101 void __ntfs_debug(const char *file, int line, const char *function,
102 const char *fmt, ...)
104 struct va_format vaf;
111 flen = strlen(function);
115 pr_debug("(%s, %d): %s(): %pV", file, line, flen ? function : "", &vaf);
119 /* Dump a runlist. Caller has to provide synchronisation for @rl. */
120 void ntfs_debug_dump_runlist(const runlist_element *rl)
123 const char *lcn_str[5] = { "LCN_HOLE ", "LCN_RL_NOT_MAPPED",
124 "LCN_ENOENT ", "LCN_unknown " };
128 pr_debug("Dumping runlist (values in hex):\n");
130 pr_debug("Run list not present.\n");
133 pr_debug("VCN LCN Run length\n");
135 LCN lcn = (rl + i)->lcn;
138 int index = -lcn - 1;
140 if (index > -LCN_ENOENT - 1)
142 pr_debug("%-16Lx %s %-16Lx%s\n",
143 (long long)(rl + i)->vcn, lcn_str[index],
144 (long long)(rl + i)->length,
145 (rl + i)->length ? "" :
148 pr_debug("%-16Lx %-16Lx %-16Lx%s\n",
149 (long long)(rl + i)->vcn,
150 (long long)(rl + i)->lcn,
151 (long long)(rl + i)->length,
152 (rl + i)->length ? "" :
154 if (!(rl + i)->length)