func populateHeaderUnix(h *tar.Header, fi os.FileInfo, seen map[uint64]string) {
st, ok := fi.Sys().(*syscall.Stat_t)
if !ok {
return
}
h.Uid = int(st.Uid)
h.Gid = int(st.Gid)
if st.Mode&syscall.S_IFMT == syscall.S_IFBLK || st.Mode&syscall.S_IFMT == syscall.S_IFCHR {
h.Devminor = int64(C.my_minor(C.dev_t(st.Rdev)))
h.Devmajor = int64(C.my_major(C.dev_t(st.Rdev)))
}
// If we have already seen this inode, generate a hardlink
p, ok := seen[uint64(st.Ino)]
if ok {
h.Linkname = p
h.Typeflag = tar.TypeLink
} else {
seen[uint64(st.Ino)] = h.Name
}
}
func Major(rdev uint64) uint {
major := C.my_major(C.dev_t(rdev))
return uint(major)
}