projects / thirdparty / util-linux.git / blame
| Commit | Line | Data |
|---|---|---|
| c12cec75 KZ |
1 | /* |
| 2 | * Copyright (C) 2008 Karel Zak <kzak@redhat.com> | |
| 3 | * | |
| 4 | * This file may be redistributed under the terms of the | |
| 5 | * GNU Lesser General Public License. | |
| 6 | */ | |
| 7 | ||
| 192c6aad KZ |
8 | /** |
| 9 | * SECTION: init | |
| 10 | * @title: Library initialization | |
| d58b3157 | 11 | * @short_description: initialize debugging |
| 192c6aad KZ |
12 | */ |
| 13 | ||
| 3f31a959 | 14 | #include <stdarg.h> |
| c12cec75 KZ |
15 | |
| 16 | #include "mountP.h" | |
| 17 | ||
| d7365821 | 18 | UL_DEBUG_DEFINE_MASK(libmount); |
| 819d9a29 | 19 | UL_DEBUG_DEFINE_MASKNAMES(libmount) = |
| 03e4220d | 20 | { |
| 35333416 KZ |
21 | { "all", MNT_DEBUG_ALL, "info about all subsystems" }, |
| 22 | { "cache", MNT_DEBUG_CACHE, "paths and tags cache" }, | |
| 23 | { "cxt", MNT_DEBUG_CXT, "library context (handler)" }, | |
| 24 | { "diff", MNT_DEBUG_DIFF, "mountinfo changes tracking" }, | |
| 25 | { "fs", MNT_DEBUG_FS, "FS abstraction" }, | |
| 26 | { "help", MNT_DEBUG_HELP, "this help" }, | |
| 27 | { "locks", MNT_DEBUG_LOCKS, "mtab and utab locking" }, | |
| 28 | { "options", MNT_DEBUG_OPTIONS, "mount options parsing" }, | |
| 29 | { "tab", MNT_DEBUG_TAB, "fstab, mtab, moutninfo routines" }, | |
| 30 | { "update", MNT_DEBUG_UPDATE, "mtab, utab updates" }, | |
| 31 | { "utils", MNT_DEBUG_UTILS, "misc library utils" }, | |
| 14ad2353 OO |
32 | { NULL, 0 } |
| 33 | }; | |
| 03e4220d | 34 | |
| 192c6aad KZ |
35 | /** |
| 36 | * mnt_init_debug: | |
| d58b3157 | 37 | * @mask: debug mask (0xffff to enable full debugging) |
| 192c6aad | 38 | * |
| d58b3157 OO |
39 | * If the @mask is not specified, then this function reads |
| 40 | * the LIBMOUNT_DEBUG environment variable to get the mask. | |
| 192c6aad | 41 | * |
| d58b3157 OO |
42 | * Already initialized debugging stuff cannot be changed. Calling |
| 43 | * this function twice has no effect. | |
| 192c6aad | 44 | */ |
| c12cec75 KZ |
45 | void mnt_init_debug(int mask) |
| 46 | { | |
| 35333416 KZ |
47 | if (libmount_debug_mask) |
| 48 | return; | |
| 49 | ||
| 274228fe | 50 | __UL_INIT_DEBUG(libmount, MNT_DEBUG_, mask, LIBMOUNT_DEBUG); |
| 39de73f5 | 51 | |
| 35333416 KZ |
52 | if (libmount_debug_mask != MNT_DEBUG_INIT |
| 53 | && libmount_debug_mask != (MNT_DEBUG_HELP|MNT_DEBUG_INIT)) { | |
| 39de73f5 KZ |
54 | const char *ver = NULL; |
| 55 | const char **features = NULL, **p; | |
| 56 | ||
| 39de73f5 KZ |
57 | mnt_get_library_version(&ver); |
| 58 | mnt_get_library_features(&features); | |
| 59 | ||
| 35333416 | 60 | DBG(INIT, ul_debug("library debug mask: 0x%04x", libmount_debug_mask)); |
| 83a78332 | 61 | DBG(INIT, ul_debug("library version: %s", ver)); |
| 39de73f5 KZ |
62 | p = features; |
| 63 | while (p && *p) | |
| 83a78332 | 64 | DBG(INIT, ul_debug(" feature: %s", *p++)); |
| 39de73f5 | 65 | } |
| 35333416 KZ |
66 | |
| 67 | ON_DBG(HELP, ul_debug_print_masks("LIBMOUNT_DEBUG", | |
| 68 | UL_DEBUG_MASKNAMES(libmount))); | |
| c12cec75 | 69 | } |
| 14ad2353 OO |
70 | |
| 71 | #ifdef TEST_PROGRAM | |
| 72 | ||
| 73 | #include <errno.h> | |
| 74 | #include <stdlib.h> | |
| 75 | int main(int argc, char *argv[]) | |
| 76 | { | |
| 77 | if (argc == 2) { | |
| 78 | int mask; | |
| 79 | ||
| 80 | errno = 0; | |
| 81 | mask = strtoul(argv[1], 0, 0); | |
| 82 | ||
| 83 | if (errno) | |
| 84 | return 1; | |
| 85 | ||
| 74d70957 | 86 | mnt_init_debug(mask); |
| 14ad2353 OO |
87 | } |
| 88 | else if (argc == 1) { | |
| 74d70957 KZ |
89 | mnt_init_debug(0); |
| 90 | } else | |
| 14ad2353 OO |
91 | return 1; |
| 92 | ||
| 93 | return 0; | |
| 94 | } | |
| 95 | #endif /* TEST_PROGRAM */ | |
| 96 |