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moby--moby/pkg/system/mknod.go
Tobias Klauser 86f080cff0 Use Mkdev, Major and Minor functions from golang.org/x/sys/unix
Update golang.org/x/sys to 8dbc5d05d6edcc104950cc299a1ce6641235bc86 in
order to get the Major, Minor and Mkdev functions for every unix-like
OS. Use them instead of the locally defined versions which currently use
the Linux specific device major/minor encoding.

This means that the device number should now be properly encoded on e.g.
Darwin, FreeBSD or Solaris.

Also, the SIGUNUSED constant was removed from golang.org/x/sys/unix in
https://go-review.googlesource.com/61771 as it is also removed from the
respective glibc headers.

Remove it from signal.SignalMap as well after the golang.org/x/sys
re-vendoring.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2017-10-19 08:28:38 +02:00

22 lines
768 B
Go

// +build !windows
package system
import (
"golang.org/x/sys/unix"
)
// Mknod creates a filesystem node (file, device special file or named pipe) named path
// with attributes specified by mode and dev.
func Mknod(path string, mode uint32, dev int) error {
return unix.Mknod(path, mode, dev)
}
// Mkdev is used to build the value of linux devices (in /dev/) which specifies major
// and minor number of the newly created device special file.
// Linux device nodes are a bit weird due to backwards compat with 16 bit device nodes.
// They are, from low to high: the lower 8 bits of the minor, then 12 bits of the major,
// then the top 12 bits of the minor.
func Mkdev(major int64, minor int64) uint32 {
return uint32(unix.Mkdev(uint32(major), uint32(minor)))
}