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archive/tar: populate Devmajor and Devminor in FileInfoHeader on *BSD

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Extract device major/minor number on all the BSDs and set Devmajor and
Devminor in FileInfoHeader. Code based on the corresponding Major/Minor
implementations in golang.org/x/sys/unix.

Change-Id: Ieffa7ce0cdbe6481950de666b2f5f88407a32382
Reviewed-on: https://go-review.googlesource.com/63470
Reviewed-by: Joe Tsai <joetsai@google.com>
This commit is contained in:
Tobias Klauser 2017-09-13 09:11:49 +02:00 committed by Joe Tsai
parent 577967799c
commit 3098cf0175
1 changed files with 23 additions and 1 deletions
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24
src/archive/tar/stat_unix.go
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@ -66,8 +66,30 @@ func statUnix(fi os.FileInfo, h *Header) error {
major := uint32((dev >> 24) & 0xff)
minor := uint32(dev & 0xffffff)
h.Devmajor, h.Devminor = int64(major), int64(minor)
case "dragonfly":
// Copied from golang.org/x/sys/unix/dev_dragonfly.go.
major := uint32((dev >> 8) & 0xff)
minor := uint32(dev & 0xffff00ff)
h.Devmajor, h.Devminor = int64(major), int64(minor)
case "freebsd":
// Copied from golang.org/x/sys/unix/dev_freebsd.go.
major := uint32((dev >> 8) & 0xff)
minor := uint32(dev & 0xffff00ff)
h.Devmajor, h.Devminor = int64(major), int64(minor)
case "netbsd":
// Copied from golang.org/x/sys/unix/dev_netbsd.go.
major := uint32((dev & 0x000fff00) >> 8)
minor := uint32((dev & 0x000000ff) >> 0)
minor |= uint32((dev & 0xfff00000) >> 12)
h.Devmajor, h.Devminor = int64(major), int64(minor)
case "openbsd":
// Copied from golang.org/x/sys/unix/dev_openbsd.go.
major := uint32((dev & 0x0000ff00) >> 8)
minor := uint32((dev & 0x000000ff) >> 0)
minor |= uint32((dev & 0xffff0000) >> 8)
h.Devmajor, h.Devminor = int64(major), int64(minor)
default:
// TODO: Implement others (see https://golang.org/issue/8106)
// TODO: Implement solaris (see https://golang.org/issue/8106)
}
}
return nil