From ced75472d7e3d73d5b057e36ccbc7b7fcba95104 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Tue, 11 Sep 2018 15:26:51 -0400 Subject: remove __vfork alias this was added so that posix_spawn and possibly other functionality could be implemented in terms of vfork, but that turned out to be unsafe. any such usage needs __clone with proper handling of stack lifetime. --- src/process/arm/vfork.s | 5 +---- src/process/i386/vfork.s | 5 +---- src/process/s390x/vfork.s | 5 +---- src/process/sh/vfork.s | 5 +---- src/process/vfork.c | 5 +---- src/process/x32/vfork.s | 5 +---- src/process/x86_64/vfork.s | 5 +---- 7 files changed, 7 insertions(+), 28 deletions(-) (limited to 'src') diff --git a/src/process/arm/vfork.s b/src/process/arm/vfork.s index ed1f87a6..d7ec41b3 100644 --- a/src/process/arm/vfork.s +++ b/src/process/arm/vfork.s @@ -1,9 +1,6 @@ .syntax unified -.global __vfork -.weak vfork -.type __vfork,%function +.global vfork .type vfork,%function -__vfork: vfork: mov ip, r7 mov r7, 190 diff --git a/src/process/i386/vfork.s b/src/process/i386/vfork.s index a3d76ae6..3d0e6d6b 100644 --- a/src/process/i386/vfork.s +++ b/src/process/i386/vfork.s @@ -1,8 +1,5 @@ -.global __vfork -.weak vfork -.type __vfork,@function +.global vfork .type vfork,@function -__vfork: vfork: pop %edx mov $190,%eax diff --git a/src/process/s390x/vfork.s b/src/process/s390x/vfork.s index 2fb4022a..744f9d78 100644 --- a/src/process/s390x/vfork.s +++ b/src/process/s390x/vfork.s @@ -1,8 +1,5 @@ - .global __vfork - .weak vfork - .type __vfork,%function + .global vfork .type vfork,%function -__vfork: vfork: svc 190 .hidden __syscall_ret diff --git a/src/process/sh/vfork.s b/src/process/sh/vfork.s index 48cc9396..91dbde7b 100644 --- a/src/process/sh/vfork.s +++ b/src/process/sh/vfork.s @@ -1,8 +1,5 @@ -.global __vfork -.weak vfork -.type __vfork,@function +.global vfork .type vfork,@function -__vfork: vfork: mov #95, r3 add r3, r3 diff --git a/src/process/vfork.c b/src/process/vfork.c index ac954651..d430c13f 100644 --- a/src/process/vfork.c +++ b/src/process/vfork.c @@ -2,9 +2,8 @@ #include #include #include "syscall.h" -#include "libc.h" -pid_t __vfork(void) +pid_t vfork(void) { /* vfork syscall cannot be made from C code */ #ifdef SYS_fork @@ -13,5 +12,3 @@ pid_t __vfork(void) return syscall(SYS_clone, SIGCHLD, 0); #endif } - -weak_alias(__vfork, vfork); diff --git a/src/process/x32/vfork.s b/src/process/x32/vfork.s index 8df00582..0f0ca3ee 100644 --- a/src/process/x32/vfork.s +++ b/src/process/x32/vfork.s @@ -1,8 +1,5 @@ -.global __vfork -.weak vfork -.type __vfork,@function +.global vfork .type vfork,@function -__vfork: vfork: pop %rdx mov $0x4000003a,%eax /* SYS_vfork */ diff --git a/src/process/x86_64/vfork.s b/src/process/x86_64/vfork.s index 2cad8052..91144390 100644 --- a/src/process/x86_64/vfork.s +++ b/src/process/x86_64/vfork.s @@ -1,8 +1,5 @@ -.global __vfork -.weak vfork -.type __vfork,@function +.global vfork .type vfork,@function -__vfork: vfork: pop %rdx mov $58,%eax -- cgit v1.2.3-70-g09d2