use weak aliases rather than function pointers to simplify some code

[musl] / src / process / fork.c

diff --git a/src/process/fork.c b/src/process/fork.c
index 1213f0f..a8bdbe0 100644 (file)
--- a/src/process/fork.c
+++ b/src/process/fork.c
@@ -1,9 +1,26 @@
 #include <unistd.h>
 #include "syscall.h"
+#include "libc.h"
+#include "pthread_impl.h"
 
-/* FIXME: add support for atfork stupidity */
+static void dummy(int x)
+{
+}
+
+weak_alias(dummy, __fork_handler);
 
 pid_t fork(void)
 {
-       return syscall0(__NR_fork);
+       pid_t ret;
+       __fork_handler(-1);
+       ret = syscall(SYS_fork);
+       if (libc.main_thread && !ret) {
+               pthread_t self = __pthread_self();
+               self->tid = self->pid = syscall(SYS_getpid);
+               memset(&self->robust_list, 0, sizeof self->robust_list);
+               libc.threads_minus_1 = 0;
+               libc.main_thread = self;
+       }
+       __fork_handler(!ret);
+       return ret;
 }