2 files changed, 443 insertions, 0 deletions
diff --git a/sys/boot/userboot/test/Makefile b/sys/boot/userboot/test/Makefile
new file mode 100644
index 0000000..24d89b7
--- /dev/null
+++ b/sys/boot/userboot/test/Makefile
@@ -0,0 +1,15 @@
+# $FreeBSD$
+
+
+NO_MAN=
+WITHOUT_SSP=
+
+.include <bsd.own.mk>
+
+PROG=		test
+INTERNALPROG=
+
+CFLAGS+=	-I${.CURDIR}/..
+CFLAGS+=	-I${.CURDIR}/../../..
+
+.include <bsd.prog.mk>
diff --git a/sys/boot/userboot/test/test.c b/sys/boot/userboot/test/test.c
new file mode 100644
index 0000000..a752a80
--- /dev/null
+++ b/sys/boot/userboot/test/test.c
@@ -0,0 +1,428 @@
+/*-
+ * Copyright (c) 2011 Google, Inc.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <dlfcn.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include <boot/userboot/userboot.h>
+
+char *host_base = NULL;
+struct termios term, oldterm;
+char *image;
+size_t image_size;
+int disk_fd = -1;
+
+uint64_t regs[16];
+uint64_t pc;
+
+void test_exit(void *arg, int v);
+
+/*
+ * Console i/o
+ */
+
+void
+test_putc(void *arg, int ch)
+{
+	char c = ch;
+
+	write(1, &c, 1);
+}
+
+int
+test_getc(void *arg)
+{
+	char c;
+
+	if (read(0, &c, 1) == 1)
+		return c;
+	return -1;
+}
+
+int
+test_poll(void *arg)
+{
+	int n;
+
+	if (ioctl(0, FIONREAD, &n) >= 0)
+		return (n > 0);
+	return (0);
+}
+
+/*
+ * Host filesystem i/o
+ */
+
+struct test_file {
+	int tf_isdir;
+	size_t tf_size;
+	struct stat tf_stat;
+	union {
+		int fd;
+		DIR *dir;
+	} tf_u;
+};
+
+int
+test_open(void *arg, const char *filename, void **h_return)
+{
+	struct stat st;
+	struct test_file *tf;
+	char path[PATH_MAX];
+
+	if (!host_base)
+		return (ENOENT);
+
+	strlcpy(path, host_base, PATH_MAX);
+	if (path[strlen(path) - 1] == '/')
+		path[strlen(path) - 1] = 0;
+	strlcat(path, filename, PATH_MAX);
+	tf = malloc(sizeof(struct test_file));
+	if (stat(path, &tf->tf_stat) < 0) {
+		free(tf);
+		return (errno);
+	}
+
+	tf->tf_size = st.st_size;
+	if (S_ISDIR(tf->tf_stat.st_mode)) {
+		tf->tf_isdir = 1;
+		tf->tf_u.dir = opendir(path);
+		if (!tf->tf_u.dir)
+			goto out;
+                *h_return = tf;
+		return (0);
+	}
+	if (S_ISREG(tf->tf_stat.st_mode)) {
+		tf->tf_isdir = 0;
+		tf->tf_u.fd = open(path, O_RDONLY);
+		if (tf->tf_u.fd < 0)
+			goto out;
+                *h_return = tf;
+		return (0);
+	}
+
+out:
+	free(tf);
+	return (EINVAL);
+}
+
+int
+test_close(void *arg, void *h)
+{
+	struct test_file *tf = h;
+
+	if (tf->tf_isdir)
+		closedir(tf->tf_u.dir);
+	else
+		close(tf->tf_u.fd);
+	free(tf);
+
+	return (0);
+}
+
+int
+test_isdir(void *arg, void *h)
+{
+	struct test_file *tf = h;
+
+	return (tf->tf_isdir);
+}
+
+int
+test_read(void *arg, void *h, void *dst, size_t size, size_t *resid_return)
+{
+	struct test_file *tf = h;
+	ssize_t sz;
+
+	if (tf->tf_isdir)
+		return (EINVAL);
+	sz = read(tf->tf_u.fd, dst, size);
+	if (sz < 0)
+		return (EINVAL);
+	*resid_return = size - sz;
+	return (0);
+}
+
+int
+test_readdir(void *arg, void *h, uint32_t *fileno_return, uint8_t *type_return,
+    size_t *namelen_return, char *name)
+{
+	struct test_file *tf = h;
+	struct dirent *dp;
+
+	if (!tf->tf_isdir)
+		return (EINVAL);
+
+	dp = readdir(tf->tf_u.dir);
+	if (!dp)
+		return (ENOENT);
+
+	/*
+	 * Note: d_namlen is in the range 0..255 and therefore less
+	 * than PATH_MAX so we don't need to test before copying.
+	 */
+	*fileno_return = dp->d_fileno;
+	*type_return = dp->d_type;
+	*namelen_return = dp->d_namlen;
+	memcpy(name, dp->d_name, dp->d_namlen);
+	name[dp->d_namlen] = 0;
+
+	return (0);
+}
+
+int
+test_seek(void *arg, void *h, uint64_t offset, int whence)
+{
+	struct test_file *tf = h;
+
+	if (tf->tf_isdir)
+		return (EINVAL);
+	if (lseek(tf->tf_u.fd, offset, whence) < 0)
+		return (errno);
+	return (0);
+}
+
+int
+test_stat(void *arg, void *h, int *mode_return, int *uid_return, int *gid_return,
+    uint64_t *size_return)
+{
+	struct test_file *tf = h;
+
+	*mode_return = tf->tf_stat.st_mode;
+	*uid_return = tf->tf_stat.st_uid;
+	*gid_return = tf->tf_stat.st_gid;
+	*size_return = tf->tf_stat.st_size;
+	return (0);
+}
+
+/*
+ * Disk image i/o
+ */
+
+int
+test_diskread(void *arg, int unit, uint64_t offset, void *dst, size_t size,
+    size_t *resid_return)
+{
+	ssize_t n;
+
+	if (unit != 0 || disk_fd == -1)
+		return (EIO);
+	n = pread(disk_fd, dst, size, offset);
+	if (n < 0)
+		return (errno);
+	*resid_return = size - n;
+	return (0);
+}
+
+/*
+ * Guest virtual machine i/o
+ *
+ * Note: guest addresses are kernel virtual
+ */
+
+int
+test_copyin(void *arg, const void *from, uint64_t to, size_t size)
+{
+
+	to &= 0x7fffffff;
+	if (to > image_size)
+		return (EFAULT);
+	if (to + size > image_size)
+		size = image_size - to;
+	memcpy(&image[to], from, size);
+}
+
+int
+test_copyout(void *arg, uint64_t from, void *to, size_t size)
+{
+
+	from &= 0x7fffffff;
+	if (from > image_size)
+		return (EFAULT);
+	if (from + size > image_size)
+		size = image_size - from;
+	memcpy(to, &image[from], size);
+}
+
+void
+test_setreg(void *arg, int r, uint64_t v)
+{
+
+	if (r < 0 || r >= 16)
+		return;
+	regs[r] = v;
+}
+
+void
+test_setmsr(void *arg, int r, uint64_t v)
+{
+}
+
+void
+test_setcr(void *arg, int r, uint64_t v)
+{
+}
+
+void
+test_setgdt(void *arg, uint64_t v, size_t sz)
+{
+}
+
+void
+test_exec(void *arg, uint64_t pc)
+{
+	printf("Execute at 0x%llx\n", pc);
+	test_exit(arg, 0);
+}
+
+/*
+ * Misc
+ */
+
+void
+test_delay(void *arg, int usec)
+{
+
+	usleep(usec);
+}
+
+void
+test_exit(void *arg, int v)
+{
+
+	tcsetattr(0, TCSAFLUSH, &oldterm);
+	exit(v);
+}
+
+void
+test_getmem(void *arg, uint64_t *lowmem, uint64_t *highmem)
+{
+
+        *lowmem = 128*1024*1024;
+        *highmem = 0;
+}
+
+struct loader_callbacks_v1 cb = {
+	.putc = test_putc,
+	.getc = test_getc,
+	.poll = test_poll,
+
+	.open = test_open,
+	.close = test_close,
+	.isdir = test_isdir,
+	.read = test_read,
+	.readdir = test_readdir,
+	.seek = test_seek,
+	.stat = test_stat,
+
+	.diskread = test_diskread,
+
+	.copyin = test_copyin,
+	.copyout = test_copyout,
+	.setreg = test_setreg,
+	.setmsr = test_setmsr,
+	.setcr = test_setcr,
+        .setgdt = test_setgdt,
+	.exec = test_exec,
+
+	.delay = test_delay,
+	.exit = test_exit,
+        .getmem = test_getmem,
+};
+
+void
+usage()
+{
+
+	printf("usage: %s [-d <disk image path>] [-h <host filesystem path>\n");
+	exit(1);
+}
+
+int
+main(int argc, char** argv)
+{
+	void *h;
+	void (*func)(struct loader_callbacks_v1 *, void *, int, int);
+	int opt;
+	char *disk_image = NULL;
+
+	while ((opt = getopt(argc, argv, "d:h:")) != -1) {
+		switch (opt) {
+		case 'd':
+			disk_image = optarg;
+			break;
+
+		case 'h':
+			host_base = optarg;
+			break;
+
+		case '?':
+			usage();
+		}
+	}
+
+	h = dlopen("/boot/userboot.so",
+            RTLD_LOCAL);
+	if (!h) {
+		printf("%s\n", dlerror());
+		return (1);
+	}
+	func = dlsym(h, "loader_main");
+	if (!func) {
+		printf("%s\n", dlerror());
+		return (1);
+	}
+
+	image_size = 128*1024*1024;
+	image = malloc(image_size);
+	if (disk_image) {
+		disk_fd = open(disk_image, O_RDONLY);
+		if (disk_fd < 0)
+			err(1, "Can't open disk image '%s'", disk_image);
+	}
+
+	tcgetattr(0, &term);
+	oldterm = term;
+	term.c_iflag &= ~(ICRNL);
+	term.c_lflag &= ~(ICANON|ECHO);
+	tcsetattr(0, TCSAFLUSH, &term);
+
+	func(&cb, NULL, USERBOOT_VERSION_1, disk_fd >= 0);
+}