Merge branch 'ma/asciidoctor-more-fixes'
[git/git.git] / common-main.c
CommitLineData
57f5d52a 1#include "cache.h"
d807c4a0 2#include "exec-cmd.h"
1a600b75 3#include "attr.h"
3f2e2297 4
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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 */
16static 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 26int main(int argc, const char **argv)
3f2e2297 27{
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28 int result;
29
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30 trace2_initialize_clock();
31
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32 /*
33 * Always open file descriptors 0/1/2 to avoid clobbering files
34 * in die(). It also avoids messing up when the pipes are dup'ed
35 * onto stdin/stdout/stderr in the child processes we spawn.
36 */
37 sanitize_stdfds();
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38 restore_sigpipe_to_default();
39
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40 git_resolve_executable_dir(argv[0]);
41
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42 git_setup_gettext();
43
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44 initialize_the_repository();
45
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46 attr_start();
47
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48 trace2_initialize();
49 trace2_cmd_start(argv);
50 trace2_collect_process_info(TRACE2_PROCESS_INFO_STARTUP);
51
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52 result = cmd_main(argc, argv);
53
54 trace2_cmd_exit(result);
12e0437f 55
ee4512ed 56 return result;
3f2e2297 57}