The third batch
[git.git] / common-main.c
blobd484aec20979ac9a1ea6d49b166f51436a24dfad
1 #include "cache.h"
2 #include "exec-cmd.h"
3 #include "attr.h"
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.
13 * Restore the way SIGPIPE is handled to default, which is what we
14 * expect.
16 static void restore_sigpipe_to_default(void)
18 sigset_t unblock;
20 sigemptyset(&unblock);
21 sigaddset(&unblock, SIGPIPE);
22 sigprocmask(SIG_UNBLOCK, &unblock, NULL);
23 signal(SIGPIPE, SIG_DFL);
26 int main(int argc, const char **argv)
28 int result;
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.
35 sanitize_stdfds();
36 restore_sigpipe_to_default();
38 trace2_initialize();
39 trace2_cmd_start(argv);
40 trace2_collect_process_info();
42 git_resolve_executable_dir(argv[0]);
44 git_setup_gettext();
46 initialize_the_repository();
48 attr_start();
50 result = cmd_main(argc, argv);
52 trace2_cmd_exit(result);
54 return result;