diff options
Diffstat (limited to 'libbb/change_identity.c')
| -rw-r--r-- | libbb/change_identity.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libbb/change_identity.c b/libbb/change_identity.c new file mode 100644 index 0000000..819b216 --- /dev/null +++ b/libbb/change_identity.c @@ -0,0 +1,54 @@ +/* vi: set sw=4 ts=4: */ +/* + * Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Julianne F. Haugh nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <stdio.h> +#include <errno.h> +#include <unistd.h> +#include <string.h> +#include <stdlib.h> +#include <syslog.h> +#include <ctype.h> + +#include "libbb.h" + + +/* Become the user and group(s) specified by PW. */ +void change_identity ( const struct passwd *pw ) +{ + if ( initgroups ( pw-> pw_name, pw-> pw_gid ) == -1 ) + perror_msg_and_die ( "cannot set groups" ); + endgrent ( ); + + if ( setgid ( pw-> pw_gid )) + perror_msg_and_die ( "cannot set group id" ); + if ( setuid ( pw->pw_uid )) + perror_msg_and_die ( "cannot set user id" ); +} + |