Staging
v0.5.1
v0.5.1
Revision df5be6dc3fd18c294ec93a9af0321334e3f92c9c authored by Jeff King on 19 April 2020, 06:34:55 UTC, committed by Jonathan Nieder on 19 April 2020, 23:10:58 UTC
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
1 parent 1a3609e
common-main.c
#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)
{
/*
* 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();
git_setup_gettext();
attr_start();
git_extract_argv0_path(argv[0]);
restore_sigpipe_to_default();
return cmd_main(argc, argv);
}
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