root/tools/io_uring/syscall.c

DEFINITIONS

1. io_uring_register
2. io_uring_setup
3. io_uring_enter

   1 /*
   2  * Will go away once libc support is there
   3  */
   4 #include <unistd.h>
   5 #include <sys/syscall.h>
   6 #include <sys/uio.h>
   7 #include <signal.h>
   8 #include "liburing.h"
   9 
  10 #ifdef __alpha__
  11 /*
  12  * alpha is the only exception, all other architectures
  13  * have common numbers for new system calls.
  14  */
  15 # ifndef __NR_io_uring_setup
  16 #  define __NR_io_uring_setup           535
  17 # endif
  18 # ifndef __NR_io_uring_enter
  19 #  define __NR_io_uring_enter           536
  20 # endif
  21 # ifndef __NR_io_uring_register
  22 #  define __NR_io_uring_register        537
  23 # endif
  24 #else /* !__alpha__ */
  25 # ifndef __NR_io_uring_setup
  26 #  define __NR_io_uring_setup           425
  27 # endif
  28 # ifndef __NR_io_uring_enter
  29 #  define __NR_io_uring_enter           426
  30 # endif
  31 # ifndef __NR_io_uring_register
  32 #  define __NR_io_uring_register        427
  33 # endif
  34 #endif
  35 
  36 int io_uring_register(int fd, unsigned int opcode, void *arg,
  37                       unsigned int nr_args)
  38 {
  39         return syscall(__NR_io_uring_register, fd, opcode, arg, nr_args);
  40 }
  41 
  42 int io_uring_setup(unsigned int entries, struct io_uring_params *p)
  43 {
  44         return syscall(__NR_io_uring_setup, entries, p);
  45 }
  46 
  47 int io_uring_enter(int fd, unsigned int to_submit, unsigned int min_complete,
  48                    unsigned int flags, sigset_t *sig)
  49 {
  50         return syscall(__NR_io_uring_enter, fd, to_submit, min_complete,
  51                         flags, sig, _NSIG / 8);
  52 }