minibase/lib/sys/signal.h

#include <syscall.h>
#include <bits/types.h>
#include <bits/fcntl.h>
#include <bits/signal.h>

#define SFD_NONBLOCK O_NONBLOCK
#define SFD_CLOEXEC  O_CLOEXEC

struct siginfo {
	uint32_t signo;
	 int32_t errno;
	 int32_t code;
	uint32_t pid;
	uint32_t uid;
	 int32_t fd;
	uint32_t tid;
	uint32_t band;
	uint32_t overrun;
	uint32_t trapno;
	 int32_t status;
	 int32_t intval;
	uint64_t ptrval;
	uint64_t utime;
	uint64_t stime;
	uint64_t addr;
	uint16_t addr_lsb;
	byte pad[46];
} __attribute__((packed));

inline static long sys_signalfd(int fd, struct sigset* set, int flags)
{
	const int ssz = sizeof(struct sigset);
	return syscall4(NR_signalfd4, fd, (long)set, ssz, flags);
}

inline static long sys_sigaction(int signum, const struct sigaction* act,
                                                   struct sigaction* oldact)
{
	const int ssz = sizeof(struct sigset);
	return syscall4(NR_rt_sigaction, signum, (long)act, (long)oldact, ssz);
}

inline static long sys_sigprocmask(int how, const struct sigset* set,
                                                  struct sigset* oldset)
{
	const int ssz = sizeof(struct sigset);
	return syscall4(NR_rt_sigprocmask, how, (long)set, (long)oldset, ssz);
}

inline static long sys_kill(int pid, int sig)
{
	return syscall2(NR_kill, pid, sig);
}