-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include "qemu/osdep.h"
#include <glib.h>
-#include <unistd.h>
-#include <fcntl.h>
#include <sys/wait.h>
#include "libqtest.h"
set_context(to);
}
+bool have_qemu_img(void)
+{
+ char *rpath;
+ const char *path = getenv("QTEST_QEMU_IMG");
+ if (!path) {
+ return false;
+ }
+
+ rpath = realpath(path, NULL);
+ if (!rpath) {
+ return false;
+ } else {
+ free(rpath);
+ return true;
+ }
+}
+
void mkimg(const char *file, const char *fmt, unsigned size_mb)
{
gchar *cli;
GError *err = NULL;
char *qemu_img_path;
gchar *out, *out2;
- char *abs_path;
+ char *qemu_img_abs_path;
qemu_img_path = getenv("QTEST_QEMU_IMG");
- abs_path = realpath(qemu_img_path, NULL);
- assert(qemu_img_path);
+ g_assert(qemu_img_path);
+ qemu_img_abs_path = realpath(qemu_img_path, NULL);
+ g_assert(qemu_img_abs_path);
- cli = g_strdup_printf("%s create -f %s %s %uM", abs_path,
+ cli = g_strdup_printf("%s create -f %s %s %uM", qemu_img_abs_path,
fmt, file, size_mb);
ret = g_spawn_command_line_sync(cli, &out, &out2, &rc, &err);
if (err) {
g_free(out);
g_free(out2);
g_free(cli);
- free(abs_path);
+ free(qemu_img_abs_path);
}
void mkqcow2(const char *file, unsigned size_mb)
ret = fclose(debug_file);
g_assert(ret == 0);
}
+
+void generate_pattern(void *buffer, size_t len, size_t cycle_len)
+{
+ int i, j;
+ unsigned char *tx = (unsigned char *)buffer;
+ unsigned char p;
+ size_t *sx;
+
+ /* Write an indicative pattern that varies and is unique per-cycle */
+ p = rand() % 256;
+ for (i = 0; i < len; i++) {
+ tx[i] = p++ % 256;
+ if (i % cycle_len == 0) {
+ p = rand() % 256;
+ }
+ }
+
+ /* force uniqueness by writing an id per-cycle */
+ for (i = 0; i < len / cycle_len; i++) {
+ j = i * cycle_len;
+ if (j + sizeof(*sx) <= len) {
+ sx = (size_t *)&tx[j];
+ *sx = i;
+ }
+ }
+}