* 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 <proc_secure.h>
+#if ENABLE_SELINUX
+#include <selinux/selinux.h> /* for setexeccon */
#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. */
+#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;
+}
-void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args
-#ifdef CONFIG_SELINUX
- , security_id_t sid
#endif
-)
+
+/* Run SHELL, or DEFAULT_SHELL if SHELL is "" or NULL.
+ * 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 FAST_FUNC run_shell(const char *shell, int loginshell, const char *command, const char **additional_args)
{
const char **args;
- int argno = 1;
+ int argno;
int additional_args_cnt = 0;
- for ( args = additional_args; args && *args; args++ )
+ for (args = additional_args; args && *args; args++)
additional_args_cnt++;
- args = (const char **) xmalloc (sizeof (char *) * ( 4 + additional_args_cnt ));
-
- args [0] = bb_get_last_path_component ( bb_xstrdup ( shell ));
+ args = xmalloc(sizeof(char*) * (4 + additional_args_cnt));
- if ( loginshell ) {
- char *args0;
- bb_xasprintf ( &args0, "-%s", args [0] );
- args [0] = args0;
- }
+ if (!shell || !shell[0])
+ shell = DEFAULT_SHELL;
- if ( command ) {
- args [argno++] = "-c";
- args [argno++] = command;
+ args[0] = bb_get_last_path_component_nostrip(shell);
+ if (loginshell)
+ args[0] = xasprintf("-%s", args[0]);
+ argno = 1;
+ if (command) {
+ args[argno++] = "-c";
+ args[argno++] = command;
}
- if ( additional_args ) {
- for ( ; *additional_args; ++additional_args )
- args [argno++] = *additional_args;
+ if (additional_args) {
+ for (; *additional_args; ++additional_args)
+ args[argno++] = *additional_args;
}
- args [argno] = 0;
-#ifdef CONFIG_SELINUX
- if(sid)
- execve_secure(shell, (char **) args, environ, sid);
- else
+ args[argno] = NULL;
+
+#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 ( "cannot run %s", shell );
+ execv(shell, (char **) args);
+ bb_perror_msg_and_die("can't execute '%s'", shell);
}