diff options
Diffstat (limited to 'tools/testing/selftests/seccomp')
| -rw-r--r-- | tools/testing/selftests/seccomp/seccomp_bpf.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c index 84766a001ed0..bc0fb463c709 100644 --- a/tools/testing/selftests/seccomp/seccomp_bpf.c +++ b/tools/testing/selftests/seccomp/seccomp_bpf.c @@ -1750,6 +1750,21 @@ TEST_F(TRACE_poke, getpid_runs_normally) # define ARCH_REGS struct pt_regs # define SYSCALL_NUM(_regs) (_regs).gpr[0] # define SYSCALL_RET(_regs) (_regs).gpr[3] +# define SYSCALL_RET_SET(_regs, _val) \ + do { \ + typeof(_val) _result = (_val); \ + /* \ + * A syscall error is signaled by CR0 SO bit \ + * and the code is stored as a positive value. \ + */ \ + if (_result < 0) { \ + SYSCALL_RET(_regs) = -result; \ + (_regs).ccr |= 0x10000000; \ + } else { \ + SYSCALL_RET(_regs) = result; \ + (_regs).ccr &= ~0x10000000; \ + } \ + } while (0) #elif defined(__s390__) # define ARCH_REGS s390_regs # define SYSCALL_NUM(_regs) (_regs).gprs[2] |