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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" }, | |
7bbde59c | 28 | { "loop", MNT_DEBUG_LOOP, "loop devices routines" }, |
35333416 | 29 | { "options", MNT_DEBUG_OPTIONS, "mount options parsing" }, |
9e930041 | 30 | { "tab", MNT_DEBUG_TAB, "fstab, mtab, mountinfo routines" }, |
35333416 KZ |
31 | { "update", MNT_DEBUG_UPDATE, "mtab, utab updates" }, |
32 | { "utils", MNT_DEBUG_UTILS, "misc library utils" }, | |
372112e9 | 33 | { "monitor", MNT_DEBUG_MONITOR, "mount tables monitor" }, |
2cd28fc8 | 34 | { "btrfs", MNT_DEBUG_BTRFS, "btrfs specific routines" }, |
372112e9 | 35 | |
14ad2353 OO |
36 | { NULL, 0 } |
37 | }; | |
03e4220d | 38 | |
192c6aad KZ |
39 | /** |
40 | * mnt_init_debug: | |
d58b3157 | 41 | * @mask: debug mask (0xffff to enable full debugging) |
192c6aad | 42 | * |
d58b3157 OO |
43 | * If the @mask is not specified, then this function reads |
44 | * the LIBMOUNT_DEBUG environment variable to get the mask. | |
192c6aad | 45 | * |
d58b3157 OO |
46 | * Already initialized debugging stuff cannot be changed. Calling |
47 | * this function twice has no effect. | |
192c6aad | 48 | */ |
c12cec75 KZ |
49 | void mnt_init_debug(int mask) |
50 | { | |
35333416 KZ |
51 | if (libmount_debug_mask) |
52 | return; | |
53 | ||
274228fe | 54 | __UL_INIT_DEBUG(libmount, MNT_DEBUG_, mask, LIBMOUNT_DEBUG); |
39de73f5 | 55 | |
35333416 KZ |
56 | if (libmount_debug_mask != MNT_DEBUG_INIT |
57 | && libmount_debug_mask != (MNT_DEBUG_HELP|MNT_DEBUG_INIT)) { | |
39de73f5 KZ |
58 | const char *ver = NULL; |
59 | const char **features = NULL, **p; | |
60 | ||
39de73f5 KZ |
61 | mnt_get_library_version(&ver); |
62 | mnt_get_library_features(&features); | |
63 | ||
35333416 | 64 | DBG(INIT, ul_debug("library debug mask: 0x%04x", libmount_debug_mask)); |
83a78332 | 65 | DBG(INIT, ul_debug("library version: %s", ver)); |
39de73f5 KZ |
66 | p = features; |
67 | while (p && *p) | |
83a78332 | 68 | DBG(INIT, ul_debug(" feature: %s", *p++)); |
39de73f5 | 69 | } |
35333416 KZ |
70 | |
71 | ON_DBG(HELP, ul_debug_print_masks("LIBMOUNT_DEBUG", | |
72 | UL_DEBUG_MASKNAMES(libmount))); | |
c12cec75 | 73 | } |
14ad2353 OO |
74 | |
75 | #ifdef TEST_PROGRAM | |
76 | ||
77 | #include <errno.h> | |
78 | #include <stdlib.h> | |
79 | int main(int argc, char *argv[]) | |
80 | { | |
81 | if (argc == 2) { | |
82 | int mask; | |
83 | ||
84 | errno = 0; | |
85 | mask = strtoul(argv[1], 0, 0); | |
86 | ||
87 | if (errno) | |
88 | return 1; | |
89 | ||
74d70957 | 90 | mnt_init_debug(mask); |
14ad2353 OO |
91 | } |
92 | else if (argc == 1) { | |
74d70957 KZ |
93 | mnt_init_debug(0); |
94 | } else | |
14ad2353 OO |
95 | return 1; |
96 | ||
97 | return 0; | |
98 | } | |
99 | #endif /* TEST_PROGRAM */ | |
100 |