github.com/bugraaydogar/snapd@v0.0.0-20210315170335-8c70bb858939/cmd/libsnap-confine-private/secure-getenv.c (about)

     1  /*
     2   * Copyright (C) 2016 Canonical Ltd
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License version 3 as
     6   * published by the Free Software Foundation.
     7   *
     8   * This program is distributed in the hope that it will be useful,
     9   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    10   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    11   * GNU General Public License for more details.
    12   *
    13   * You should have received a copy of the GNU General Public License
    14   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    15   *
    16   */
    17  #include "secure-getenv.h"
    18  
    19  #include <stdlib.h>
    20  #include <sys/auxv.h>
    21  
    22  #ifndef HAVE_SECURE_GETENV
    23  char *secure_getenv(const char *name)
    24  {
    25  	unsigned long secure = getauxval(AT_SECURE);
    26  	if (secure != 0) {
    27  		return NULL;
    28  	}
    29  	return getenv(name);
    30  }
    31  #endif				// ! HAVE_SECURE_GETENV