posix_spawnattr_setsigmask.c\process\src - musl - musl - an implementation of the standard library for Linux-based systems

#include <spawn.h>
int posix_spawnattr_setsigmask(posix_spawnattr_t *restrict attr, const sigset_t *restrict mask)
{
	attr->__mask = *mask;
	return 0;
}