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#include "cache.h"
#include "exec-cmd.h"
#include "attr.h"
/*
* Many parts of Git have subprograms communicate via pipe, expect the
* upstream of a pipe to die with SIGPIPE when the downstream of a
* pipe does not need to read all that is written. Some third-party
* programs that ignore or block SIGPIPE for their own reason forget
* to restore SIGPIPE handling to the default before spawning Git and
* break this carefully orchestrated machinery.
*
* Restore the way SIGPIPE is handled to default, which is what we
* expect.
*/
static void restore_sigpipe_to_default(void)
{
sigset_t unblock;
sigemptyset(&unblock);
sigaddset(&unblock, SIGPIPE);
sigprocmask(SIG_UNBLOCK, &unblock, NULL);
signal(SIGPIPE, SIG_DFL);
}
int main(int argc, const char **argv)
{
int result;
struct strbuf tmp = STRBUF_INIT;
trace2_initialize_clock();
/*
* Always open file descriptors 0/1/2 to avoid clobbering files
* in die(). It also avoids messing up when the pipes are dup'ed
* onto stdin/stdout/stderr in the child processes we spawn.
*/
sanitize_stdfds();
restore_sigpipe_to_default();
git_resolve_executable_dir(argv[0]);
git_setup_gettext();
initialize_the_repository();
attr_start();
trace2_initialize();
trace2_cmd_start(argv);
trace2_collect_process_info(TRACE2_PROCESS_INFO_STARTUP);
if (!strbuf_getcwd(&tmp))
tmp_original_cwd = strbuf_detach(&tmp, NULL);
result = cmd_main(argc, argv);
/*
* We define exit() to call trace2_cmd_exit_fl() in
* git-compat-util.h. Whether we reach this or exit()
* elsewhere we'll always run our trace2 exit handler.
*/
exit(result);
}
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