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*: add an update/restore functionality

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This allows for restoring some attributes of files from the state in an
mtree Manifest

Reported-by: Matthew Garrett <Matthewgarrett@google.com>
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
This commit is contained in:
Vincent Batts 2016-08-02 15:57:51 -04:00
parent e359fa7d2d
commit fc5450ed71
Signed by: vbatts
GPG key ID: 10937E57733F1362
10 changed files with 351 additions and 11 deletions
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41
keywordfuncs_unsupported.go Normal file
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@ -0,0 +1,41 @@
// +build !linux,!darwin,!freebsd,!netbsd,!openbsd
package mtree
import (
"archive/tar"
"fmt"
"io"
"os"
)
var (
// this is bsd specific https://www.freebsd.org/cgi/man.cgi?query=chflags&sektion=2
flagsKeywordFunc = func(path string, info os.FileInfo, r io.Reader) (KeyVal, error) {
return emptyKV, nil
}
unameKeywordFunc = func(path string, info os.FileInfo, r io.Reader) (KeyVal, error) {
if hdr, ok := info.Sys().(*tar.Header); ok {
return KeyVal(fmt.Sprintf("uname=%s", hdr.Uname)), nil
}
return emptyKV, nil
}
uidKeywordFunc = func(path string, info os.FileInfo, r io.Reader) (KeyVal, error) {
if hdr, ok := info.Sys().(*tar.Header); ok {
return KeyVal(fmt.Sprintf("uid=%d", hdr.Uid)), nil
}
return emptyKV, nil
}
gidKeywordFunc = func(path string, info os.FileInfo, r io.Reader) (KeyVal, error) {
if hdr, ok := info.Sys().(*tar.Header); ok {
return KeyVal(fmt.Sprintf("gid=%d", hdr.Gid)), nil
}
return emptyKV, nil
}
nlinkKeywordFunc = func(path string, info os.FileInfo, r io.Reader) (KeyVal, error) {
return emptyKV, nil
}
xattrKeywordFunc = func(path string, info os.FileInfo, r io.Reader) (KeyVal, error) {
return emptyKV, nil
}
)