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s390: wire up clone3 system call 

Tested (64-bit and compat mode) using program from
http://lkml.kernel.org/r/20190604212930.jaaztvkent32b7d3@brauner.io
with the following:
       return syscall(__NR_clone, flags, 0, pidfd, 0, 0);
changed to:
       return syscall(__NR_clone, 0, flags, pidfd, 0, 0);
due to CLONE_BACKWARDS2.

Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Vasily Gorbik 2019-07-14 20:49:23 +02:00 committed by Heiko Carstens
parent a963609e27
commit 5518aed82d
2 changed files with 2 additions and 1 deletions
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1
arch/s390/include/asm/unistd.h
View File

@ -34,5 +34,6 @@
#define __ARCH_WANT_SYS_FORK
#define __ARCH_WANT_SYS_VFORK
#define __ARCH_WANT_SYS_CLONE
#define __ARCH_WANT_SYS_CLONE3
#endif /* _ASM_S390_UNISTD_H_ */

2
arch/s390/kernel/syscalls/syscall.tbl
View File

@ -437,4 +437,4 @@
432 common fsmount sys_fsmount sys_fsmount
433 common fspick sys_fspick sys_fspick
434 common pidfd_open sys_pidfd_open sys_pidfd_open
# 435 reserved for clone3
435 common clone3 sys_clone3 sys_clone3