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1 | #include "cache.h" | |
2 | #include "exec-cmd.h" | |
3 | #include "attr.h" | |
4 | ||
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 | ||
26 | int main(int argc, const char **argv) | |
27 | { | |
28 | int result; | |
29 | ||
30 | /* | |
31 | * Always open file descriptors 0/1/2 to avoid clobbering files | |
32 | * in die(). It also avoids messing up when the pipes are dup'ed | |
33 | * onto stdin/stdout/stderr in the child processes we spawn. | |
34 | */ | |
35 | sanitize_stdfds(); | |
36 | restore_sigpipe_to_default(); | |
37 | ||
38 | trace2_initialize(); | |
39 | trace2_cmd_start(argv); | |
40 | trace2_collect_process_info(); | |
41 | ||
42 | git_resolve_executable_dir(argv[0]); | |
43 | ||
44 | git_setup_gettext(); | |
45 | ||
46 | initialize_the_repository(); | |
47 | ||
48 | attr_start(); | |
49 | ||
50 | result = cmd_main(argc, argv); | |
51 | ||
52 | trace2_cmd_exit(result); | |
53 | ||
54 | return result; | |
55 | } |