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Commit | Line | Data |
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57f5d52a | 1 | #include "cache.h" |
d807c4a0 | 2 | #include "exec-cmd.h" |
1a600b75 | 3 | #include "attr.h" |
3f2e2297 | 4 | |
12e0437f JK |
5 | /* |
6 | * Many parts of Git have subprograms communicate via pipe, expect the | |
7 | * upstream of a pipe to die with SIGPIPE when the downstream of a | |
8 | * pipe does not need to read all that is written. Some third-party | |
9 | * programs that ignore or block SIGPIPE for their own reason forget | |
10 | * to restore SIGPIPE handling to the default before spawning Git and | |
11 | * break this carefully orchestrated machinery. | |
12 | * | |
13 | * Restore the way SIGPIPE is handled to default, which is what we | |
14 | * expect. | |
15 | */ | |
16 | static void restore_sigpipe_to_default(void) | |
17 | { | |
18 | sigset_t unblock; | |
19 | ||
20 | sigemptyset(&unblock); | |
21 | sigaddset(&unblock, SIGPIPE); | |
22 | sigprocmask(SIG_UNBLOCK, &unblock, NULL); | |
23 | signal(SIGPIPE, SIG_DFL); | |
24 | } | |
25 | ||
08aade70 | 26 | int main(int argc, const char **argv) |
3f2e2297 | 27 | { |
ee4512ed | 28 | int result; |
e6f8861b | 29 | struct strbuf tmp = STRBUF_INIT; |
ee4512ed | 30 | |
a0897249 JH |
31 | trace2_initialize_clock(); |
32 | ||
57f5d52a JK |
33 | /* |
34 | * Always open file descriptors 0/1/2 to avoid clobbering files | |
35 | * in die(). It also avoids messing up when the pipes are dup'ed | |
36 | * onto stdin/stdout/stderr in the child processes we spawn. | |
37 | */ | |
38 | sanitize_stdfds(); | |
ee4512ed JH |
39 | restore_sigpipe_to_default(); |
40 | ||
a7bc01eb JH |
41 | git_resolve_executable_dir(argv[0]); |
42 | ||
5ce5f5fa JK |
43 | git_setup_gettext(); |
44 | ||
b2f0ecee NTND |
45 | initialize_the_repository(); |
46 | ||
1a600b75 BW |
47 | attr_start(); |
48 | ||
5732f2b1 JK |
49 | trace2_initialize(); |
50 | trace2_cmd_start(argv); | |
51 | trace2_collect_process_info(TRACE2_PROCESS_INFO_STARTUP); | |
52 | ||
e6f8861b EN |
53 | if (!strbuf_getcwd(&tmp)) |
54 | tmp_original_cwd = strbuf_detach(&tmp, NULL); | |
55 | ||
ee4512ed JH |
56 | result = cmd_main(argc, argv); |
57 | ||
19d75948 ÆAB |
58 | /* Not exit(3), but a wrapper calling our common_exit() */ |
59 | exit(result); | |
60 | } | |
61 | ||
0cc05b04 ÆAB |
62 | static void check_bug_if_BUG(void) |
63 | { | |
64 | if (!bug_called_must_BUG) | |
65 | return; | |
66 | BUG("on exit(): had bug() call(s) in this process without explicit BUG_if_bug()"); | |
67 | } | |
68 | ||
19d75948 ÆAB |
69 | /* We wrap exit() to call common_exit() in git-compat-util.h */ |
70 | int common_exit(const char *file, int line, int code) | |
71 | { | |
368b5843 | 72 | /* |
19d75948 ÆAB |
73 | * For non-POSIX systems: Take the lowest 8 bits of the "code" |
74 | * to e.g. turn -1 into 255. On a POSIX system this is | |
75 | * redundant, see exit(3) and wait(2), but as it doesn't harm | |
76 | * anything there we don't need to guard this with an "ifdef". | |
368b5843 | 77 | */ |
19d75948 ÆAB |
78 | code &= 0xff; |
79 | ||
0cc05b04 | 80 | check_bug_if_BUG(); |
19d75948 ÆAB |
81 | trace2_cmd_exit_fl(file, line, code); |
82 | ||
83 | return code; | |
3f2e2297 | 84 | } |