diff options
| author | Ben Wolsieffer <Ben.Wolsieffer@hefring.com> | 2023-09-14 11:02:42 -0400 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2023-09-15 07:18:35 +0200 |
| commit | 170619adce4eb73c175362851118364e143636a2 (patch) | |
| tree | ccb51e296a88563224cc8037b9f60358cfe9fa2d | |
| parent | cf0e633c84ce83a5aaf39529b1c7595a0c46170b (diff) | |
fork: generate stub on no-MMU systems
fork() can be implemented using either the fork or clone syscalls on MMU
systems. Therefore the stub is only generated if neither __NR_fork nor
__NR_clone are defined. The stub code manually undefines __NR_fork on
no-MMU systems in an attempt to enable the stub, but this doesn't work
because __NR_clone is still defined. It is not appropriate to undefine
__NR_clone because clone is available on no-MMU, it is just not capable
of implementing fork.
This patch directly enables the fork stub if __ARCH_USE_MMU__ is not
defined. This eliminates the need to undefine __NR_fork, so this code is
removed
Signed-off-by: Ben Wolsieffer <ben.wolsieffer@hefring.com>
| -rw-r--r-- | libc/sysdeps/linux/common/stubs.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/libc/sysdeps/linux/common/stubs.c b/libc/sysdeps/linux/common/stubs.c index c17e509b9..634dcde0d 100644 --- a/libc/sysdeps/linux/common/stubs.c +++ b/libc/sysdeps/linux/common/stubs.c @@ -34,10 +34,6 @@ __attribute_used__ static int ret_enosys_stub(void) link_warning(stub, #stub ": this function is not implemented") \ strong_alias(ret_enosys_stub, stub) -#ifndef __ARCH_USE_MMU__ -# undef __NR_fork -#endif - #ifdef __arm__ # define __NR_fadvise64_64 __NR_arm_fadvise64_64 # define __NR_fadvise64 __NR_arm_fadvise64_64 @@ -120,7 +116,7 @@ make_stub(fgetxattr) make_stub(flistxattr) #endif -#if !defined __NR_fork && !defined __NR_clone +#if !defined __ARCH_USE_MMU__ || (!defined __NR_fork && !defined __NR_clone) make_stub(fork) #endif |