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Diffstat (limited to 'i/pc104/initrd/conf/busybox/libbb/run_shell.c')
-rw-r--r--i/pc104/initrd/conf/busybox/libbb/run_shell.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/libbb/run_shell.c b/i/pc104/initrd/conf/busybox/libbb/run_shell.c
new file mode 100644
index 0000000..6be0908
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/libbb/run_shell.c
@@ -0,0 +1,101 @@
+/* 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(&current_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);
+}