From: Markos Chandras <[email protected]>
Signed-off-by: Markos Chandras <[email protected]>
---
libc/sysdeps/linux/common/vfork.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/libc/sysdeps/linux/common/vfork.c
b/libc/sysdeps/linux/common/vfork.c
index a70ed4a..bbf5638 100644
--- a/libc/sysdeps/linux/common/vfork.c
+++ b/libc/sysdeps/linux/common/vfork.c
@@ -4,6 +4,9 @@
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
+#include <signal.h>
+#include <unistd.h>
+#include <sys/types.h>
#include <sys/syscall.h>
#if (defined __NR_vfork || (defined __ARCH_USE_MMU__ && defined __NR_fork)) &&
(defined __USE_BSD || defined __USE_XOPEN_EXTENDED)
@@ -12,6 +15,24 @@ extern __typeof(vfork) __vfork attribute_hidden;
# ifdef __NR_vfork
# define __NR___vfork __NR_vfork
+
+#if defined(__NR_clone) && !defined(__NR_vfork)
+
+pid_t __vfork(void)
+{
+ pid_t pid = INLINE_SYSCALL(clone, 4, SIGCHLD,
+ NULL, NULL, NULL);
+
+ if (pid<0)
+ return -1
+
+ return pid;
+}
+weak_alias(__vfork, vfork)
+libc_hidden_weak(vfork)
+
+#elif defined(__NR_vfork)
+
_syscall0(pid_t, __vfork)
# else
/* Trivial implementation for arches that lack vfork */
--
1.8.1.1
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