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QemuOpts: add -set option

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One use case will be file for drives (no filename quoting issues), i.e.

	-drive id=test,if=virtio
	-set drive.test.file=/vmdisk/test-virtio.img

It will work for any other option (assuming handled by QemuOpts) though.
Except for id= for obvious reasons ;).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Message-Id:
This commit is contained in:
Gerd Hoffmann 2009-07-31 12:25:36 +02:00 • committed by Anthony Liguori
parent 7282a0331f
commit d058fe03e5
4 changed files with 52 additions and 1 deletions
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41
qemu-config.c
View file

@ -71,3 +71,44 @@ QemuOptsList qemu_drive_opts = {
},
};
static QemuOptsList *lists[] = {
&qemu_drive_opts,
NULL,
};
int qemu_set_option(const char *str)
{
char group[64], id[64], arg[64];
QemuOpts *opts;
int i, rc, offset;
rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
if (rc < 3 || str[offset] != '=') {
fprintf(stderr, "can't parse: \"%s\"\n", str);
return -1;
}
for (i = 0; lists[i] != NULL; i++) {
if (strcmp(lists[i]->name, group) == 0)
break;
}
if (lists[i] == NULL) {
fprintf(stderr, "there is no option group \"%s\"\n", group);
return -1;
}
opts = qemu_opts_find(lists[i], id);
if (!opts) {
fprintf(stderr, "there is no %s \"%s\" defined\n",
lists[i]->name, id);
return -1;
}
if (-1 == qemu_opt_set(opts, arg, str+offset+1)) {
fprintf(stderr, "failed to set \"%s\" for %s \"%s\"\n",
arg, lists[i]->name, id);
return -1;
}
return 0;
}