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In libc_r, rename vfork syscall to _thread_sys_vfork and make vfork an alias 

to fork. It is difficult to do real vfork in libc_r, since almost every
operation with file descriptsor changes _thread_fd_table and friends.

popen(3) works much better with this change.
This commit is contained in:
Dmitrij Tejblum 1998-09-12 22:03:20 +00:00
parent 48f4157055
commit deb9688ae1
9 changed files with 47 additions and 9 deletions
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4
lib/libc/alpha/sys/Ovfork.S
View File

@ -29,7 +29,7 @@
#include "SYS.h"
SYSCALL(vfork)
PSYSCALL(vfork)
cmovne a4, zero, v0 /* a4 (rv[1]) != 0, child */
RET
END(vfork)
PEND(vfork)

8
lib/libc/amd64/sys/vfork.S
View File

@ -33,12 +33,12 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: Ovfork.S,v 1.6 1997/02/22 14:59:28 peter Exp $
* $Id: Ovfork.S,v 1.7 1998/05/05 22:07:02 jb Exp $
*/
#if defined(SYSLIBC_RCS) && !defined(lint)
.text
.asciz "$Id: Ovfork.S,v 1.6 1997/02/22 14:59:28 peter Exp $"
.asciz "$Id: Ovfork.S,v 1.7 1998/05/05 22:07:02 jb Exp $"
#endif /* SYSLIBC_RCS and not lint */
#include "DEFS.h"
@ -52,7 +52,11 @@
*
*/
#ifdef _THREAD_SAFE
ENTRY(_thread_sys_vfork)
#else
ENTRY(vfork)
#endif
popl %ecx /* my rta into ecx */
lea SYS_vfork,%eax
KERNCALL

8
lib/libc/i386/sys/Ovfork.S
View File

@ -33,12 +33,12 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: Ovfork.S,v 1.6 1997/02/22 14:59:28 peter Exp $
* $Id: Ovfork.S,v 1.7 1998/05/05 22:07:02 jb Exp $
*/
#if defined(SYSLIBC_RCS) && !defined(lint)
.text
.asciz "$Id: Ovfork.S,v 1.6 1997/02/22 14:59:28 peter Exp $"
.asciz "$Id: Ovfork.S,v 1.7 1998/05/05 22:07:02 jb Exp $"
#endif /* SYSLIBC_RCS and not lint */
#include "DEFS.h"
@ -52,7 +52,11 @@
*
*/
#ifdef _THREAD_SAFE
ENTRY(_thread_sys_vfork)
#else
ENTRY(vfork)
#endif
popl %ecx /* my rta into ecx */
lea SYS_vfork,%eax
KERNCALL

3
lib/libc_r/uthread/Makefile.inc
View File

@ -1,4 +1,4 @@
# $Id: Makefile.inc,v 1.13 1998/06/01 02:14:34 jb Exp $
# $Id: Makefile.inc,v 1.14 1998/09/07 19:01:43 alex Exp $
# uthread sources
.PATH: ${.CURDIR}/uthread
@ -91,6 +91,7 @@ SRCS+= \
uthread_spec.c \
uthread_spinlock.c \
uthread_suspend_np.c \
uthread_vfork.c \
uthread_wait4.c \
uthread_write.c \
uthread_writev.c \

9
lib/libc_r/uthread/uthread_vfork.c Normal file
View File

@ -0,0 +1,9 @@
#include <unistd.h>
#ifdef _THREAD_SAFE
int
vfork(void)
{
return (fork());
}
#endif

3
lib/libkse/thread/Makefile.inc
View File

@ -1,4 +1,4 @@
# $Id: Makefile.inc,v 1.13 1998/06/01 02:14:34 jb Exp $
# $Id: Makefile.inc,v 1.14 1998/09/07 19:01:43 alex Exp $
# uthread sources
.PATH: ${.CURDIR}/uthread
@ -91,6 +91,7 @@ SRCS+= \
uthread_spec.c \
uthread_spinlock.c \
uthread_suspend_np.c \
uthread_vfork.c \
uthread_wait4.c \
uthread_write.c \
uthread_writev.c \

9
lib/libkse/thread/thr_vfork.c Normal file
View File

@ -0,0 +1,9 @@
#include <unistd.h>
#ifdef _THREAD_SAFE
int
vfork(void)
{
return (fork());
}
#endif

3
lib/libpthread/thread/Makefile.inc
View File

@ -1,4 +1,4 @@
# $Id: Makefile.inc,v 1.13 1998/06/01 02:14:34 jb Exp $
# $Id: Makefile.inc,v 1.14 1998/09/07 19:01:43 alex Exp $
# uthread sources
.PATH: ${.CURDIR}/uthread
@ -91,6 +91,7 @@ SRCS+= \
uthread_spec.c \
uthread_spinlock.c \
uthread_suspend_np.c \
uthread_vfork.c \
uthread_wait4.c \
uthread_write.c \
uthread_writev.c \

9
lib/libpthread/thread/thr_vfork.c Normal file
View File

@ -0,0 +1,9 @@
#include <unistd.h>
#ifdef _THREAD_SAFE
int
vfork(void)
{
return (fork());
}
#endif