87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/* 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 "libbb.h"
|
|
#if ENABLE_SELINUX
|
|
#include <selinux/selinux.h> /* for setexeccon */
|
|
#endif
|
|
|
|
#if ENABLE_SELINUX
|
|
static security_context_t current_sid;
|
|
|
|
void FAST_FUNC renew_current_security_context(void)
|
|
{
|
|
freecon(current_sid); /* Release old context */
|
|
getcon(¤t_sid); /* update */
|
|
}
|
|
void FAST_FUNC set_current_security_context(security_context_t sid)
|
|
{
|
|
freecon(current_sid); /* Release old context */
|
|
current_sid = sid;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* Run SHELL, or DEFAULT_SHELL if SHELL is "" or NULL.
|
|
* If ADDITIONAL_ARGS is not NULL, pass them to the shell.
|
|
*/
|
|
void FAST_FUNC run_shell(const char *shell, int loginshell, const char **additional_args)
|
|
{
|
|
const char **args;
|
|
|
|
args = additional_args;
|
|
while (args && *args)
|
|
args++;
|
|
|
|
args = xmalloc(sizeof(char*) * (2 + (args - additional_args)));
|
|
|
|
if (!shell || !shell[0])
|
|
shell = DEFAULT_SHELL;
|
|
|
|
args[0] = bb_get_last_path_component_nostrip(shell);
|
|
if (loginshell)
|
|
args[0] = xasprintf("-%s", args[0]);
|
|
args[1] = NULL;
|
|
if (additional_args) {
|
|
int cnt = 1;
|
|
for (;;)
|
|
if ((args[cnt++] = *additional_args++) == NULL)
|
|
break;
|
|
}
|
|
|
|
#if ENABLE_SELINUX
|
|
if (current_sid)
|
|
setexeccon(current_sid);
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
freecon(current_sid);
|
|
#endif
|
|
execv(shell, (char **) args);
|
|
bb_perror_msg_and_die("can't execute '%s'", shell);
|
|
}
|