github.com/stolowski/snapd@v0.0.0-20210407085831-115137ce5a22/osutil/fshelpers.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2017 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package osutil
    21  
    22  import (
    23  	"os"
    24  	"syscall"
    25  )
    26  
    27  // FindGidOwning obtains UNIX group ID and name owning file `path`.
    28  func FindGidOwning(path string) (uint64, error) {
    29  	var stat syscall.Stat_t
    30  	if err := syscall.Stat(path, &stat); err != nil {
    31  		if err == syscall.ENOENT {
    32  			return 0, os.ErrNotExist
    33  		}
    34  		return 0, err
    35  	}
    36  
    37  	gid := uint64(stat.Gid)
    38  	return gid, nil
    39  }