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#include <signal.h>
#include <errno.h>
#include "syscall.h"
#include "libc.h"
#include "pthread_impl.h"
int sigprocmask(int how, const sigset_t *set, sigset_t *old)
{
if (how > 2U) {
errno = EINVAL;
return -1;
}
return syscall(SYS_rt_sigprocmask, how, set, old, 8);
}
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