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Index: qemu/vl.c
===================================================================
--- vl.c (revision 4276)
+++ vl.c (revision 4277)
@@ -4961,6 +4961,7 @@
int bus_id, unit_id;
int cyls, heads, secs, translation;
BlockDriverState *bdrv;
+ BlockDriver *drv = NULL;
int max_devs;
int index;
int cache;
@@ -4968,7 +4969,7 @@
char *str = arg->opt;
char *params[] = { "bus", "unit", "if", "index", "cyls", "heads",
"secs", "trans", "media", "snapshot", "file",
- "cache", NULL };
+ "cache", "format", NULL };
if (check_params(buf, sizeof(buf), params, str) < 0) {
fprintf(stderr, "qemu: unknown parameter '%s' in '%s'\n",
@@ -5136,6 +5137,14 @@
}
}
+ if (get_param_value(buf, sizeof(buf), "format", str)) {
+ drv = bdrv_find_format(buf);
+ if (!drv) {
+ fprintf(stderr, "qemu: '%s' invalid format\n", buf);
+ return -1;
+ }
+ }
+
if (arg->file == NULL)
get_param_value(file, sizeof(file), "file", str);
else
@@ -5238,7 +5247,7 @@
bdrv_flags |= BDRV_O_SNAPSHOT;
if (!cache)
bdrv_flags |= BDRV_O_DIRECT;
- if (bdrv_open(bdrv, file, bdrv_flags) < 0 || qemu_key_check(bdrv, file)) {
+ if (bdrv_open2(bdrv, file, bdrv_flags, drv) < 0 || qemu_key_check(bdrv, file)) {
fprintf(stderr, "qemu: could not open disk image %s\n",
file);
return -1;
Index: qemu/qemu-doc.texi
===================================================================
--- qemu-doc.texi (revision 4276)
+++ qemu-doc.texi (revision 4277)
@@ -261,6 +261,10 @@
@var{snapshot} is "on" or "off" and allows to enable snapshot for given drive (see @option{-snapshot}).
@item cache=@var{cache}
@var{cache} is "on" or "off" and allows to disable host cache to access data.
+@item format=@var{format}
+Specify which disk @var{format} will be used rather than detecting
+the format. Can be used to specifiy format=raw to avoid interpreting
+an untrusted format header.
@end table
Instead of @option{-cdrom} you can use:
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