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*: xattr can Update()

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This is a gnarly patchset that has been mashed together.
It uncovered that some aspects of Check were never really working
correctly for `xattr` keywords, but also the `Update()` had been left
undone for a while.

This includes some API changes around the `Keyword` and `KeyVal` types.

Also I would like to update the signature for the `UpdateKeywordFunc` to
just accept a `KeyVal` as an argugment, rather than a keyword AND the
value. with this context there would be no need to guess on the value of
what's passed to the xattr update function of whether it needs or
already is base64 encoded.

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
This commit is contained in:
Vincent Batts 2017-06-15 14:54:58 -04:00
parent fb4ec19981
commit ed464af779
Signed by: vbatts
GPG key ID: 10937E57733F1362
19 changed files with 398 additions and 258 deletions
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38
tar.go
View file

@ -5,11 +5,11 @@ import (
"fmt"
"io"
"io/ioutil"
"log"
"os"
"path/filepath"
"strings"
"github.com/Sirupsen/logrus"
"github.com/vbatts/go-mtree/pkg/govis"
)
@ -144,16 +144,16 @@ hdrloop:
// Keep track of which files are hardlinks so we can resolve them later
if hdr.Typeflag == tar.TypeLink {
linkFunc := KeywordFuncs["link"]
kv, err := linkFunc(hdr.Name, hdr.FileInfo(), nil)
keyFunc := KeywordFuncs["link"]
kvs, err := keyFunc(hdr.Name, hdr.FileInfo(), nil)
if err != nil {
log.Println(err)
break
logrus.Warn(err)
break // XXX is breaking an okay thing to do here?
}
linkname, err := govis.Unvis(KeyVal(kv).Value(), DefaultVisFlags)
linkname, err := govis.Unvis(KeyVal(kvs[0]).Value(), DefaultVisFlags)
if err != nil {
log.Println(err)
break
logrus.Warn(err)
break // XXX is breaking an okay thing to do here?
}
if _, ok := ts.hardlinks[linkname]; !ok {
ts.hardlinks[linkname] = []string{hdr.Name}
@ -164,19 +164,19 @@ hdrloop:
// now collect keywords on the file
for _, keyword := range ts.keywords {
if keyFunc, ok := KeywordFuncs[keyword]; ok {
if keyFunc, ok := KeywordFuncs[keyword.Prefix()]; ok {
// We can't extract directories on to disk, so "size" keyword
// is irrelevant for now
if hdr.FileInfo().IsDir() && keyword == "size" {
continue
}
val, err := keyFunc(hdr.Name, hdr.FileInfo(), tmpFile)
kvs, err := keyFunc(hdr.Name, hdr.FileInfo(), tmpFile)
if err != nil {
ts.setErr(err)
}
// for good measure, check that we actually get a value for a keyword
if val != "" {
e.Keywords = append(e.Keywords, val)
if len(kvs) > 0 && kvs[0] != "" {
e.Keywords = append(e.Keywords, kvs[0])
}
// don't forget to reset the reader
@ -196,13 +196,15 @@ hdrloop:
Type: SpecialType,
}
for _, setKW := range SetKeywords {
if keyFunc, ok := KeywordFuncs[setKW]; ok {
val, err := keyFunc(hdr.Name, hdr.FileInfo(), tmpFile)
if keyFunc, ok := KeywordFuncs[setKW.Prefix()]; ok {
kvs, err := keyFunc(hdr.Name, hdr.FileInfo(), tmpFile)
if err != nil {
ts.setErr(err)
}
if val != "" {
s.Keywords = append(s.Keywords, val)
for _, kv := range kvs {
if kv != "" {
s.Keywords = append(s.Keywords, kv)
}
}
if _, err := tmpFile.Seek(0, 0); err != nil {
tmpFile.Close()
@ -383,7 +385,7 @@ func resolveHardlinks(root *Entry, hardlinks map[string][]string, countlinks boo
if seen, ok := originals[base]; !ok {
basefile = root.Find(base)
if basefile == nil {
log.Printf("%s does not exist in this tree\n", base)
logrus.Printf("%s does not exist in this tree\n", base)
continue
}
originals[base] = basefile
@ -393,7 +395,7 @@ func resolveHardlinks(root *Entry, hardlinks map[string][]string, countlinks boo
for _, link := range links {
linkfile := root.Find(link)
if linkfile == nil {
log.Printf("%s does not exist in this tree\n", link)
logrus.Printf("%s does not exist in this tree\n", link)
continue
}
linkfile.Keywords = basefile.Keywords