[git commit] drop support for old systems lacking vfork
Mike Frysinger
vapier at gentoo.org
Sat May 5 19:02:27 UTC 2012
commit: http://git.uclibc.org/uClibc/commit/?id=036daaa8e143c0865ac92359396f38c0d7e2c1f2
branch: http://git.uclibc.org/uClibc/commit/?id=refs/heads/master
Only really old systems (<=linux-2.0) lack a dedicated vfork system call.
The code that is in place to support them is causing issues with newer
arches that also don't provide a vfork system call -- instead, they do
vfork by calling clone in userspace.
If anyone cares about these really old systems, they can submit a patch
to make the system work with them while not breaking newer systems.
Signed-off-by: Mark Salter <msalter at redhat.com>
Signed-off-by: Mike Frysinger <vapier at gentoo.org>
---
libc/stdio/popen.c | 9 ---------
libc/stdlib/system.c | 5 -----
libc/stdlib/unix_grantpt.c | 6 ------
3 files changed, 0 insertions(+), 20 deletions(-)
diff --git a/libc/stdio/popen.c b/libc/stdio/popen.c
index d5c60cf..dfbfd96 100644
--- a/libc/stdio/popen.c
+++ b/libc/stdio/popen.c
@@ -26,15 +26,6 @@
#warning "hmm... susv3 says Pipe streams are byte-oriented."
#endif /* __UCLIBC_MJN3_ONLY__ */
-
-/* uClinux-2.0 has vfork, but Linux 2.0 doesn't */
-#include <sys/syscall.h>
-#if ! defined __NR_vfork
-# define vfork fork
-# define VFORK_LOCK ((void) 0)
-# define VFORK_UNLOCK ((void) 0)
-#endif
-
#ifndef VFORK_LOCK
__UCLIBC_MUTEX_STATIC(mylock, PTHREAD_MUTEX_INITIALIZER);
# define VFORK_LOCK __UCLIBC_MUTEX_LOCK(mylock)
diff --git a/libc/stdlib/system.c b/libc/stdlib/system.c
index a92c307..ec25ead 100644
--- a/libc/stdlib/system.c
+++ b/libc/stdlib/system.c
@@ -24,11 +24,6 @@ extern __typeof(system) __libc_system;
* need to figure out why still
*/
#if !defined __UCLIBC_HAS_THREADS_NATIVE__ || defined __sparc__
-/* uClinux-2.0 has vfork, but Linux 2.0 doesn't */
-#include <sys/syscall.h>
-#ifndef __NR_vfork
-# define vfork fork
-#endif
int __libc_system(const char *command)
{
diff --git a/libc/stdlib/unix_grantpt.c b/libc/stdlib/unix_grantpt.c
index 1be0a7d..527b8c9 100644
--- a/libc/stdlib/unix_grantpt.c
+++ b/libc/stdlib/unix_grantpt.c
@@ -31,12 +31,6 @@
#include "pty-private.h"
-/* uClinux-2.0 has vfork, but Linux 2.0 doesn't */
-#include <sys/syscall.h>
-#if ! defined __NR_vfork
-#define vfork fork
-#endif
-
/* Return the result of ptsname_r in the buffer pointed to by PTS,
which should be of length BUF_LEN. If it is too long to fit in
this buffer, a sufficiently long buffer is allocated using malloc,
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