46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* GLIB - Library of useful routines for C programming
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*
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* Copyright (C) 2020 Red Hat, Inc.
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*
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* Author: Jakub Jelen <jjelen@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <dlfcn.h>
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#include <pwd.h>
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#include <sys/types.h>
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#include <unistd.h>
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static struct passwd my_pw;
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/* This is used in gutils.c used to make sure utility functions
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* handling user information do not crash on bad data (for example
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* caused by getpwuid returning some NULL elements.
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*/
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struct passwd *
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getpwuid (uid_t uid)
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{
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static struct passwd *(*real_getpwuid) (uid_t);
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struct passwd *pw;
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if (real_getpwuid == NULL)
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real_getpwuid = dlsym (RTLD_NEXT, "getpwuid");
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pw = real_getpwuid (uid);
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my_pw = *pw;
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my_pw.pw_name = NULL;
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return &my_pw;
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}
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