From d62f4e98881702f07501b965e5beebd7516deca2 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Fri, 14 Sep 2012 15:32:51 -0400 Subject: [PATCH] use vfork if possible in posix_spawn vfork is implemented as the fork syscall (with no atfork handlers run) on archs where it is not available, so this change does not introduce any change in behavior or regression for such archs. --- src/process/posix_spawn.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/process/posix_spawn.c b/src/process/posix_spawn.c index 1120be08..604756e9 100644 --- a/src/process/posix_spawn.c +++ b/src/process/posix_spawn.c @@ -8,6 +8,8 @@ extern char **environ; +pid_t __vfork(void); + int __posix_spawnx(pid_t *restrict res, const char *restrict path, int (*exec)(const char *, char *const *), const posix_spawn_file_actions_t *fa, @@ -22,7 +24,7 @@ int __posix_spawnx(pid_t *restrict res, const char *restrict path, if (!attr) attr = &dummy_attr; sigprocmask(SIG_BLOCK, (void *)(uint64_t []){-1}, &oldmask); - pid = __syscall(SYS_fork); + pid = __vfork(); if (pid) { sigprocmask(SIG_SETMASK, &oldmask, 0); -- 2.25.1