githubmirror/liburing

src/syscall.c

53 строки1 KB

Stefan Hajnoczi

src/Makefile: keep private headers in <liburing/*.h>

24 июл 2019, 18:11

24 июл 2019, 18:11c31c7ec

/*
 * Will go away once libc support is there
 */
#include <unistd.h>
#include <sys/syscall.h>
#include <sys/uio.h>
#include <signal.h>
#include "liburing/compat.h"
#include "liburing/io_uring.h"

#ifdef __alpha__
/*
 * alpha is the only exception, all other architectures
 * have common numbers for new system calls.
 */
# ifndef __NR_io_uring_setup
#  define __NR_io_uring_setup		535
# endif
# ifndef __NR_io_uring_enter
#  define __NR_io_uring_enter		536
# endif
# ifndef __NR_io_uring_register
#  define __NR_io_uring_register	537
# endif
#else /* !__alpha__ */
# ifndef __NR_io_uring_setup
#  define __NR_io_uring_setup		425
# endif
# ifndef __NR_io_uring_enter
#  define __NR_io_uring_enter		426
# endif
# ifndef __NR_io_uring_register
#  define __NR_io_uring_register	427
# endif
#endif

int io_uring_register(int fd, unsigned int opcode, const void *arg,
		      unsigned int nr_args)
{
	return syscall(__NR_io_uring_register, fd, opcode, arg, nr_args);
}

int io_uring_setup(unsigned int entries, struct io_uring_params *p)
{
	return syscall(__NR_io_uring_setup, entries, p);
}

int io_uring_enter(int fd, unsigned int to_submit, unsigned int min_complete,
		   unsigned int flags, sigset_t *sig)
{
	return syscall(__NR_io_uring_enter, fd, to_submit, min_complete,
			flags, sig, _NSIG / 8);
}