| #define _GNU_SOURCE |
| #include <fcntl.h> |
| #include <errno.h> |
| #include "syscall.h" |
| |
| // works same in x86_64 && aarch64 |
| #define __SYSCALL_LL_E(x) (x) |
| #define __SYSCALL_LL_O(x) (x) |
| |
| int sync_file_range(int fd, off_t pos, off_t len, unsigned flags) |
| { |
| #if defined(SYS_sync_file_range2) |
| return syscall(SYS_sync_file_range2, fd, flags, |
| __SYSCALL_LL_E(pos), __SYSCALL_LL_E(len)); |
| #elif defined(SYS_sync_file_range) |
| return __syscall(SYS_sync_file_range, fd, |
| __SYSCALL_LL_O(pos), __SYSCALL_LL_E(len), flags); |
| #else |
| return __syscall_ret(-ENOSYS); |
| #endif |
| } |
