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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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38
cmd/gomtree/main.go
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@ -16,12 +16,13 @@ import (
var (
// Flags common with mtree(8)
flCreate = flag.Bool("c", false, "create a directory hierarchy spec")
flFile = flag.String("f", "", "directory hierarchy spec to validate")
flPath = flag.String("p", "", "root path that the hierarchy spec is relative to")
flAddKeywords = flag.String("K", "", "Add the specified (delimited by comma or space) keywords to the current set of keywords")
flUseKeywords = flag.String("k", "", "Use the specified (delimited by comma or space) keywords as the current set of keywords")
flDirectoryOnly = flag.Bool("d", false, "Ignore everything except directory type files")
flCreate = flag.Bool("c", false, "create a directory hierarchy spec")
flFile = flag.String("f", "", "directory hierarchy spec to validate")
flPath = flag.String("p", "", "root path that the hierarchy spec is relative to")
flAddKeywords = flag.String("K", "", "Add the specified (delimited by comma or space) keywords to the current set of keywords")
flUseKeywords = flag.String("k", "", "Use the specified (delimited by comma or space) keywords as the current set of keywords")
flDirectoryOnly = flag.Bool("d", false, "Ignore everything except directory type files")
flUpdateAttributes = flag.Bool("u", false, "Modify the owner, group, permissions and xattrs of files, symbolic links and devices, to match the provided specification. This is not compatible with '-T'.")
// Flags unique to gomtree
flListKeywords = flag.Bool("list-keywords", false, "List the keywords available")
@ -208,6 +209,12 @@ func app() error {
excludes = append(excludes, mtree.ExcludeNonDirectories)
}
// -u
// Failing early here. Processing is done below.
if *flUpdateAttributes && *flTar != "" {
return fmt.Errorf("ERROR: -u can not be used with -T")
}
// -T <tar file>
if *flTar != "" {
var input io.Reader
@ -242,6 +249,25 @@ func app() error {
}
}
// -u
if *flUpdateAttributes && stateDh != nil {
// -u
// this comes before the next case, intentionally.
// TODO brainstorm where to allow setting of xattrs. Maybe a new flag that allows a comma delimited list of keywords to update?
updateKeywords := []mtree.Keyword{"uid", "gid", "mode"}
result, err := mtree.Update(rootPath, stateDh, updateKeywords, nil)
if err != nil {
return err
}
if result != nil {
fmt.Printf("%#v\n", result)
}
return nil
}
// -c
if *flCreate {
fh := os.Stdout