mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-10 00:10:20 +00:00
46 lines
1.9 KiB
Markdown
46 lines
1.9 KiB
Markdown
[](http://godoc.org/github.com/pkg/xattr)
|
|
[](https://goreportcard.com/report/github.com/pkg/xattr)
|
|
[](https://github.com/pkg/xattr/actions?query=workflow%3Abuild)
|
|
[](https://codecov.io/gh/pkg/xattr)
|
|
|
|
xattr
|
|
=====
|
|
Extended attribute support for Go (linux + darwin + freebsd + netbsd + solaris).
|
|
|
|
"Extended attributes are name:value pairs associated permanently with files and directories, similar to the environment strings associated with a process. An attribute may be defined or undefined. If it is defined, its value may be empty or non-empty." [See more...](https://en.wikipedia.org/wiki/Extended_file_attributes)
|
|
|
|
`SetWithFlags` allows to additionally pass system flags to be forwarded to the underlying calls. FreeBSD and NetBSD do not support this and the parameter will be ignored.
|
|
|
|
The `L` variants of all functions (`LGet/LSet/...`) are identical to `Get/Set/...` except that they
|
|
do not reference a symlink that appears at the end of a path. See
|
|
[GoDoc](http://godoc.org/github.com/pkg/xattr) for details.
|
|
|
|
### Example
|
|
```go
|
|
const path = "/tmp/myfile"
|
|
const prefix = "user."
|
|
|
|
if err := xattr.Set(path, prefix+"test", []byte("test-attr-value")); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
var list []string
|
|
if list, err = xattr.List(path); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
var data []byte
|
|
if data, err = xattr.Get(path, prefix+"test"); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
if err = xattr.Remove(path, prefix+"test"); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
// One can also specify the flags parameter to be passed to the OS.
|
|
if err := xattr.SetWithFlags(path, prefix+"test", []byte("test-attr-value"), xattr.XATTR_CREATE); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
```
|