[wasi-libc.git] / libc-top-half / musl / src / signal / sigaltstack.c

#include <signal.h>
#include <errno.h>
#include "syscall.h"

int sigaltstack(const stack_t *restrict ss, stack_t *restrict old)
{
	if (ss) {
		if (ss->ss_size < MINSIGSTKSZ) {
			errno = ENOMEM;
			return -1;
		}
		if (ss->ss_flags & SS_ONSTACK) {
			errno = EINVAL;
			return -1;
		}
	}
	return syscall(SYS_sigaltstack, ss, old);
}
Commit	Line	Data
320054e8 DG	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_size < MINSIGSTKSZ) {
	9	errno = ENOMEM;
	10	return -1;
	11	}
f41256b6	12	if (ss->ss_flags & SS_ONSTACK) {
320054e8 DG	13	errno = EINVAL;
	14	return -1;
	15	}
	16	}
	17	return syscall(SYS_sigaltstack, ss, old);
	18	}