1 files changed, 15 insertions, 0 deletions

diff --git a/vendor/golang.org/x/sys/unix/syscall_linux_arm.go b/vendor/golang.org/x/sys/unix/syscall_linux_arm.go
index 3ec7a93..3a3c37b 100644
--- a/vendor/golang.org/x/sys/unix/syscall_linux_arm.go
+++ b/vendor/golang.org/x/sys/unix/syscall_linux_arm.go
@@ -19,12 +19,18 @@ func setTimeval(sec, usec int64) Timeval {
         return Timeval{Sec: int32(sec), Usec: int32(usec)}
 }
 
+//sysnb pipe(p *[2]_C_int) (err error)
+
 func Pipe(p []int) (err error) {
         if len(p) != 2 {
                 return EINVAL
         }
         var pp [2]_C_int
+        // Try pipe2 first for Android O, then try pipe for kernel 2.6.23.
         err = pipe2(&pp, 0)
+        if err == ENOSYS {
+                err = pipe(&pp)
+        }
         p[0] = int(pp[0])
         p[1] = int(pp[1])
         return
@@ -89,6 +95,7 @@ func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
 //sys   Listen(s int, n int) (err error)
 //sys   Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
 //sys   Pause() (err error)
+//sys   Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
 //sys   sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
 //sys   Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
 //sys   Setfsgid(gid int) (err error) = SYS_SETFSGID32
@@ -257,3 +264,11 @@ func Poll(fds []PollFd, timeout int) (n int, err error) {
         }
         return poll(&fds[0], len(fds), timeout)
 }
+
+//sys   armSyncFileRange(fd int, flags int, off int64, n int64) (err error) = SYS_ARM_SYNC_FILE_RANGE
+
+func SyncFileRange(fd int, off int64, n int64, flags int) error {
+        // The sync_file_range and arm_sync_file_range syscalls differ only in the
+        // order of their arguments.
+        return armSyncFileRange(fd, flags, off, n)
+}