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tools/user_group.c
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Andreas Gruenbacher
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06 фев 2020, 19:04
06 фев 2020, 19:04
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/* File: user_group.c (Linux Access Control List Management) Copyright (C) 1999, 2000 Andreas Gruenbacher, <andreas.gruenbacher@gmail.com> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include "user_group.h" const char * user_name(uid_t uid, int numeric) { struct passwd *passwd = numeric ? NULL : getpwuid(uid); static char uid_str[22]; int ret; if (passwd != NULL) return passwd->pw_name; ret = snprintf(uid_str, sizeof(uid_str), "%ld", (long)uid); if (ret < 1 || (size_t)ret >= sizeof(uid_str)) return "?"; return uid_str; } const char * group_name(gid_t gid, int numeric) { struct group *group = numeric ? NULL : getgrgid(gid); static char gid_str[22]; int ret; if (group != NULL) return group->gr_name; ret = snprintf(gid_str, sizeof(gid_str), "%ld", (long)gid); if (ret < 1 || (size_t)ret >= sizeof(gid_str)) return "?"; return gid_str; }