debian: new upstream point release
[git/debian.git] / common-main.c
blob29fb7452f8a0b78cf7784ee4a1af7b26ebb53379
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;
29 struct strbuf tmp = STRBUF_INIT;
31 trace2_initialize_clock();
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.
38 sanitize_stdfds();
39 restore_sigpipe_to_default();
41 git_resolve_executable_dir(argv[0]);
43 git_setup_gettext();
45 initialize_the_repository();
47 attr_start();
49 trace2_initialize();
50 trace2_cmd_start(argv);
51 trace2_collect_process_info(TRACE2_PROCESS_INFO_STARTUP);
53 if (!strbuf_getcwd(&tmp))
54 tmp_original_cwd = strbuf_detach(&tmp, NULL);
56 result = cmd_main(argc, argv);
59 * We define exit() to call trace2_cmd_exit_fl() in
60 * git-compat-util.h. Whether we reach this or exit()
61 * elsewhere we'll always run our trace2 exit handler.
63 exit(result);