1 /* vi: set sw=4 ts=4: */
3 * Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of Julianne F. Haugh nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 #include <selinux/selinux.h> /* for setexeccon */
44 static security_context_t current_sid=NULL;
47 renew_current_security_context(void)
50 freecon(current_sid); /* Release old context */
52 getcon(¤t_sid); /* update */
57 set_current_security_context(security_context_t sid)
60 freecon(current_sid); /* Release old context */
69 /* Run SHELL, or DEFAULT_SHELL if SHELL is empty.
70 If COMMAND is nonzero, pass it to the shell with the -c option.
71 If ADDITIONAL_ARGS is nonzero, pass it to the shell as more
74 void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args)
78 int additional_args_cnt = 0;
80 for ( args = additional_args; args && *args; args++ )
81 additional_args_cnt++;
83 args = (const char **) xmalloc (sizeof (char *) * ( 4 + additional_args_cnt ));
85 args [0] = bb_get_last_path_component ( bb_xstrdup ( shell ));
88 args [0] = bb_xasprintf ("-%s", args [0]);
91 args [argno++] = "-c";
92 args [argno++] = command;
94 if ( additional_args ) {
95 for ( ; *additional_args; ++additional_args )
96 args [argno++] = *additional_args;
100 if ( (current_sid) && (!setexeccon(current_sid)) ) {
101 freecon(current_sid);
102 execve(shell, (char **) args, environ);
105 execv ( shell, (char **) args );
106 bb_perror_msg_and_die ( "cannot run %s", shell );