mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-12-14 15:28:38 +00:00
102 lines
3.2 KiB
C
102 lines
3.2 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 <stdio.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <syslog.h>
|
|
#include <ctype.h>
|
|
#include "libbb.h"
|
|
#ifdef CONFIG_SELINUX
|
|
#include <selinux/selinux.h> /* for setexeccon */
|
|
#endif
|
|
|
|
#ifdef CONFIG_SELINUX
|
|
static security_context_t current_sid;
|
|
|
|
void
|
|
renew_current_security_context(void)
|
|
{
|
|
if (current_sid)
|
|
freecon(current_sid); /* Release old context */
|
|
getcon(¤t_sid); /* update */
|
|
}
|
|
void
|
|
set_current_security_context(security_context_t sid)
|
|
{
|
|
if (current_sid)
|
|
freecon(current_sid); /* Release old context */
|
|
current_sid = sid;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* Run SHELL, or DEFAULT_SHELL if SHELL is empty.
|
|
If COMMAND is nonzero, pass it to the shell with the -c option.
|
|
If ADDITIONAL_ARGS is nonzero, pass it to the shell as more
|
|
arguments. */
|
|
|
|
void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args)
|
|
{
|
|
const char **args;
|
|
int argno = 1;
|
|
int additional_args_cnt = 0;
|
|
|
|
for (args = additional_args; args && *args; args++)
|
|
additional_args_cnt++;
|
|
|
|
args = xmalloc(sizeof(char*) * (4 + additional_args_cnt));
|
|
|
|
args[0] = bb_get_last_path_component(xstrdup(shell));
|
|
|
|
if (loginshell)
|
|
args[0] = xasprintf("-%s", args[0]);
|
|
|
|
if (command) {
|
|
args[argno++] = "-c";
|
|
args[argno++] = command;
|
|
}
|
|
if (additional_args) {
|
|
for (; *additional_args; ++additional_args)
|
|
args[argno++] = *additional_args;
|
|
}
|
|
args[argno] = NULL;
|
|
#ifdef CONFIG_SELINUX
|
|
if (current_sid && !setexeccon(current_sid)) {
|
|
freecon(current_sid);
|
|
execve(shell, (char **) args, environ);
|
|
} else
|
|
#endif
|
|
execv(shell, (char **) args);
|
|
bb_perror_msg_and_die("cannot run %s", shell);
|
|
}
|