62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
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// +build linux
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package xattr
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import "syscall"
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// Get retrieves extended attribute data associated with path.
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func Get(path, name string) ([]byte, error) {
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// find size.
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size, err := syscall.Getxattr(path, name, nil)
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if err != nil {
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return nil, &Error{"xattr.Get", path, name, err}
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}
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if size > 0 {
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data := make([]byte, size)
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// Read into buffer of that size.
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read, err := syscall.Getxattr(path, name, data)
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if err != nil {
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return nil, &Error{"xattr.Get", path, name, err}
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}
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return data[:read], nil
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}
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return []byte{}, nil
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}
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// List retrieves a list of names of extended attributes associated
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// with the given path in the file system.
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func List(path string) ([]string, error) {
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// find size.
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size, err := syscall.Listxattr(path, nil)
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if err != nil {
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return nil, &Error{"xattr.List", path, "", err}
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}
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if size > 0 {
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buf := make([]byte, size)
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// Read into buffer of that size.
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read, err := syscall.Listxattr(path, buf)
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if err != nil {
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return nil, &Error{"xattr.List", path, "", err}
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}
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return nullTermToStrings(buf[:read]), nil
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}
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return []string{}, nil
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}
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// Set associates name and data together as an attribute of path.
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func Set(path, name string, data []byte) error {
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if err := syscall.Setxattr(path, name, data, 0); err != nil {
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return &Error{"xattr.Set", path, name, err}
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}
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return nil
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}
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// Remove removes the attribute associated
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// with the given path.
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func Remove(path, name string) error {
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if err := syscall.Removexattr(path, name); err != nil {
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return &Error{"xattr.Remove", path, name, err}
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}
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return nil
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}
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