Initial Spring 2016 commit.

userland/testbin/badcall/bad_execv.c

@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
+ *	The President and Fellows of Harvard College.
+ *
+ * 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 the University 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 THE UNIVERSITY 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 THE UNIVERSITY 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.
+ */
+
+/*
+ * bad calls to execv()
+ */
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <err.h>
+
+#include "config.h"
+#include "test.h"
+
+static
+int
+exec_common_fork(void)
+{
+	int pid, rv, status, err;
+
+	/*
+	 * This does not happen in a test context (from the point of
+	 * view of report.c) so we have to fiddle a bit.
+	 */
+
+	pid = fork();
+	if (pid<0) {
+		err = errno;
+		report_begin("forking for test");
+		report_result(pid, err);
+		report_aborted();
+		return -1;
+	}
+
+	if (pid==0) {
+		/* child */
+		return 0;
+	}
+
+	rv = waitpid(pid, &status, 0);
+	if (rv == -1) {
+		err = errno;
+		report_begin("waiting for test subprocess");
+		report_result(rv, err);
+		report_failure();
+		return -1;
+	}
+	if (WIFEXITED(status) && WEXITSTATUS(status) == MAGIC_STATUS) {
+		return 1;
+	}
+	/* Oops... */
+	report_begin("exit code of subprocess; should be %d", MAGIC_STATUS);
+	if (WIFSIGNALED(status)) {
+		report_warnx("signal %d", WTERMSIG(status));
+	}
+	else {
+		report_warnx("exit %d", WEXITSTATUS(status));
+	}
+	report_failure();
+	return -1;
+}
+
+static
+void
+exec_badprog(const void *prog, const char *desc)
+{
+	int rv;
+	char *args[2];
+	args[0] = (char *)"foo";
+	args[1] = NULL;
+
+	if (exec_common_fork() != 0) {
+		return;
+	}
+
+	report_begin(desc);
+	rv = execv(prog, args);
+	report_check(rv, errno, EFAULT);
+	exit(MAGIC_STATUS);
+}
+
+static
+void
+exec_emptyprog(void)
+{
+	int rv;
+	char *args[2];
+	args[0] = (char *)"foo";
+	args[1] = NULL;
+
+	if (exec_common_fork() != 0) {
+		return;
+	}
+
+	report_begin("exec the empty string");
+	rv = execv("", args);
+	report_check2(rv, errno, EINVAL, EISDIR);
+	exit(MAGIC_STATUS);
+}
+
+static
+void
+exec_badargs(void *args, const char *desc)
+{
+	int rv;
+
+	if (exec_common_fork() != 0) {
+		return;
+	}
+
+	report_begin(desc);
+	rv = execv("/bin/true", args);
+	report_check(rv, errno, EFAULT);
+	exit(MAGIC_STATUS);
+}
+
+static
+void
+exec_onearg(void *ptr, const char *desc)
+{
+	int rv;
+
+	char *args[3];
+	args[0] = (char *)"foo";
+	args[1] = (char *)ptr;
+	args[2] = NULL;
+
+	if (exec_common_fork() != 0) {
+		return;
+	}
+
+	report_begin(desc);
+	rv = execv("/bin/true", args);
+	report_check(rv, errno, EFAULT);
+	exit(MAGIC_STATUS);
+}
+
+void
+test_execv(void)
+{
+	exec_badprog(NULL, "exec with NULL program");
+	exec_badprog(INVAL_PTR, "exec with invalid pointer program");
+	exec_badprog(KERN_PTR, "exec with kernel pointer program");
+
+	exec_emptyprog();
+
+	exec_badargs(NULL, "exec with NULL arglist");
+	exec_badargs(INVAL_PTR, "exec with invalid pointer arglist");
+	exec_badargs(KERN_PTR, "exec with kernel pointer arglist");
+
+	exec_onearg(INVAL_PTR, "exec with invalid pointer arg");
+	exec_onearg(KERN_PTR, "exec with kernel pointer arg");
+}