Joe Tsai <******@****.***> 1443691829 -0700

pkg syscall (linux-arm-cgo), type Ucred struct, Uid uint32
pkg syscall (linux-arm-cgo), type Ustat_t struct
pkg syscall (linux-arm-cgo), type Ustat_t struct, Fname [6]uint8
pkg syscall (linux-arm-cgo), type Ustat_t struct, Fpack [6]uint8
pkg syscall (linux-arm-cgo), type Ustat_t struct, Tfree int32
pkg syscall (linux-arm-cgo), type Ustat_t struct, Tinode uint32
pkg syscall (linux-arm-cgo), type Utimbuf struct

		}
	}

	// Check basic fields.
	var blk block
	v7 := blk.toV7()
	ustar := blk.toUSTAR()
	gnu := blk.toGNU()
	verifyString(h.Name, len(v7.name()), "Name", paxPath)
	verifyString(h.Linkname, len(v7.linkName()), "Linkname", paxLinkpath)
	verifyString(h.Uname, len(ustar.userName()), "Uname", paxUname)
	verifyString(h.Gname, len(ustar.groupName()), "Gname", paxGname)
	verifyNumeric(h.Mode, len(v7.mode()), "Mode", paxNone)

Joe Tsai <******@****.***> 1502752448 -0700

Russ Cox <******@****.***> 1410149331 -0400

const (
	magicGNU, versionGNU     = "ustar ", " \x00"
	magicUSTAR, versionUSTAR = "ustar\x00", "00"
	trailerSTAR              = "tar\x00"
)

// Size constants from various tar specifications.
const (
	blockSize  = 512 // Size of each block in a tar stream
	nameSize   = 100 // Max length of the name field in USTAR format
	prefixSize = 155 // Max length of the prefix field in USTAR format

//
// Keys and values should be UTF-8, but the number of bad writers out there
// forces us to be a more liberal.
// Thus, we only reject all keys with NUL, and only reject NULs in values
// for the PAX version of the USTAR string fields.
// The key must not contain an '=' character.
func validPAXRecord(k, v string) bool {
	if k == "" || strings.Contains(k, "=") {
		return false
	}
	switch k {

			Uid:      010000000,
			ModTime:  time.Unix(0, 0),
			Typeflag: '0',
		}},
	}, {
		// USTAR archive with a regular entry with non-zero device numbers.
		file: "testdata/ustar-file-devs.tar",
		headers: []*Header{{
			Name:     "file",
			Mode:     0644,
			Typeflag: '0',
			ModTime:  time.Unix(0, 0),
			Devmajor: 1,
			Devminor: 1,

pkg syscall (linux-amd64), type Ustat_t struct
pkg syscall (linux-amd64), type Ustat_t struct, Fname [6]int8
pkg syscall (linux-amd64), type Ustat_t struct, Fpack [6]int8
pkg syscall (linux-amd64), type Ustat_t struct, Pad_cgo_0 [4]uint8
pkg syscall (linux-amd64), type Ustat_t struct, Pad_cgo_1 [4]uint8
pkg syscall (linux-amd64), type Ustat_t struct, Tfree int32

	if format > formatV7 {
		ustar := tr.blk.toUSTAR()
		hdr.Uname = p.parseString(ustar.userName())
		hdr.Gname = p.parseString(ustar.groupName())
		hdr.Devmajor = p.parseNumeric(ustar.devMajor())
		hdr.Devminor = p.parseNumeric(ustar.devMinor())

		var prefix string
		switch {
		case format.has(FormatUSTAR | FormatPAX):
			hdr.Format = format
			ustar := tr.blk.toUSTAR()