| 1 | #include <signal.h> |
| 2 | #include <errno.h> |
| 3 | #include "syscall.h" |
| 4 | |
| 5 | int sigaltstack(const stack_t *restrict ss, stack_t *restrict old) |
| 6 | { |
| 7 | if (ss) { |
| 8 | if (!(ss->ss_flags & SS_DISABLE) && ss->ss_size < MINSIGSTKSZ) { |
| 9 | errno = ENOMEM; |
| 10 | return -1; |
| 11 | } |
| 12 | if (ss->ss_flags & SS_ONSTACK) { |
| 13 | errno = EINVAL; |
| 14 | return -1; |
| 15 | } |
| 16 | } |
| 17 | return syscall(SYS_sigaltstack, ss, old); |
| 18 | } |