prevent fork's errno from being clobbered by atfork handlers
If the syscall fails, errno must be set correctly for the caller.
There's no guarantee that the handlers registered with pthread_atfork
won't clobber errno, so we need to ensure it gets set after they are
called.
diff --git a/src/process/fork.c b/src/process/fork.c
index b96f002..da074ae 100644
--- a/src/process/fork.c
+++ b/src/process/fork.c
@@ -18,9 +18,9 @@
__fork_handler(-1);
__block_all_sigs(&set);
#ifdef SYS_fork
- ret = syscall(SYS_fork);
+ ret = __syscall(SYS_fork);
#else
- ret = syscall(SYS_clone, SIGCHLD, 0);
+ ret = __syscall(SYS_clone, SIGCHLD, 0);
#endif
if (!ret) {
pthread_t self = __pthread_self();
@@ -31,5 +31,5 @@
}
__restore_sigs(&set);
__fork_handler(!ret);
- return ret;
+ return __syscall_ret(ret);
}