1  /*
       2    File: user_group.c
       3    (Linux Access Control List Management)
       4  
       5    Copyright (C) 1999, 2000
       6    Andreas Gruenbacher, <andreas.gruenbacher@gmail.com>
       7   	
       8    This program is free software; you can redistribute it and/or modify
       9    it under the terms of the GNU General Public License as published by
      10    the Free Software Foundation; either version 2 of the License, or (at
      11    your option) any later version.
      12  
      13    This program is distributed in the hope that it will be useful, but
      14    WITHOUT ANY WARRANTY; without even the implied warranty of
      15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      16    General Public License for more details.
      17  
      18    You should have received a copy of the GNU General Public License
      19    along with this library; if not, write to the Free Software
      20    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
      21    USA.
      22  */
      23  
      24  #include "config.h"
      25  #include <stdlib.h>
      26  #include <stdio.h>
      27  #include "user_group.h"
      28  
      29  
      30  const char *
      31  user_name(uid_t uid, int numeric)
      32  {
      33  	struct passwd *passwd = numeric ? NULL : getpwuid(uid);
      34  	static char uid_str[22];
      35  	int ret;
      36  
      37  	if (passwd != NULL)
      38  		return passwd->pw_name;
      39  	ret = snprintf(uid_str, sizeof(uid_str), "%ld", (long)uid);
      40  	if (ret < 1 || (size_t)ret >= sizeof(uid_str))
      41  		return "?";
      42  	return uid_str;
      43  }
      44  
      45  
      46  const char *
      47  group_name(gid_t gid, int numeric)
      48  {
      49  	struct group *group = numeric ? NULL : getgrgid(gid);
      50  	static char gid_str[22];
      51  	int ret;
      52  
      53  	if (group != NULL)
      54  		return group->gr_name;
      55  	ret = snprintf(gid_str, sizeof(gid_str), "%ld", (long)gid);
      56  	if (ret < 1 || (size_t)ret >= sizeof(gid_str))
      57  		return "?";
      58  	return gid_str;
      59  }
      60