distinguish error versus short read from read_in_full()
[git.git] / common-main.c
blob6a689007e7ce3fe08f148e8b82c0a1c618c513a5
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)
29 * Always open file descriptors 0/1/2 to avoid clobbering files
30 * in die(). It also avoids messing up when the pipes are dup'ed
31 * onto stdin/stdout/stderr in the child processes we spawn.
33 sanitize_stdfds();
35 git_setup_gettext();
37 attr_start();
39 git_extract_argv0_path(argv[0]);
41 restore_sigpipe_to_default();
43 return cmd_main(argc, argv);