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authorDaniel P. Berrange <berrange@redhat.com>2016-02-17 10:10:18 +0000
committerKevin Wolf <kwolf@redhat.com>2016-02-22 09:50:04 +0100
commit499afa2512ec5bb0ecb6dbe3c8ea13a7217030ba (patch)
tree4f5607b3bb15a9288881ddf8c96b501b612390b5
parent3babeb153caab765e6a66ba1e0a12ff0c3b51a4e (diff)
qemu-io: allow specifying image as a set of options args
Currently qemu-io allows an image filename to be passed on the command line, but unless using the JSON format, it does not have a way to set any options except the format eg qemu-io https://127.0.0.1/images/centos7.iso qemu-io /home/berrange/demo.qcow2 By contrast when using the interactive shell, it is possible to use --option with the 'open' command, or to omit the filename. This adds a --image-opts arg that indicates that the positional filename should be interpreted as a full option string, not just a filename. qemu-io --image-opts driver=https,url=https://127.0.0.1/images,sslverify=off qemu-io --image-opts driver=qcow2,file.filename=/home/berrange/demo.qcow2 This flag is mutually exclusive with the '-f' flag and with the '-o' flag to the 'open' command Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
-rw-r--r--qemu-io.c57
1 files changed, 51 insertions, 6 deletions
diff --git a/qemu-io.c b/qemu-io.c
index 969c8bfdea..4a0d5f0523 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -32,6 +32,7 @@ static BlockBackend *qemuio_blk;
/* qemu-io commands passed using -c */
static int ncmdline;
static char **cmdline;
+static bool imageOpts;
static ReadLineState *readline_state;
@@ -151,6 +152,10 @@ static int open_f(BlockBackend *blk, int argc, char **argv)
readonly = 1;
break;
case 'o':
+ if (imageOpts) {
+ printf("--image-opts and 'open -o' are mutually exclusive\n");
+ return 0;
+ }
if (!qemu_opts_parse_noisily(&empty_opts, optarg, false)) {
qemu_opts_reset(&empty_opts);
return 0;
@@ -166,6 +171,14 @@ static int open_f(BlockBackend *blk, int argc, char **argv)
flags |= BDRV_O_RDWR;
}
+ if (imageOpts && (optind == argc - 1)) {
+ if (!qemu_opts_parse_noisily(&empty_opts, argv[optind], false)) {
+ qemu_opts_reset(&empty_opts);
+ return 0;
+ }
+ optind++;
+ }
+
qopts = qemu_opts_find(&empty_opts, NULL);
opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL;
qemu_opts_reset(&empty_opts);
@@ -366,6 +379,7 @@ static void reenable_tty_echo(void)
enum {
OPTION_OBJECT = 256,
+ OPTION_IMAGE_OPTS = 257,
};
static QemuOptsList qemu_object_opts = {
@@ -378,6 +392,16 @@ static QemuOptsList qemu_object_opts = {
};
+static QemuOptsList file_opts = {
+ .name = "file",
+ .implied_opt_name = "file",
+ .head = QTAILQ_HEAD_INITIALIZER(file_opts.head),
+ .desc = {
+ /* no elements => accept any params */
+ { /* end of list */ }
+ },
+};
+
int main(int argc, char **argv)
{
int readonly = 0;
@@ -397,6 +421,7 @@ int main(int argc, char **argv)
{ "cache", 1, NULL, 't' },
{ "trace", 1, NULL, 'T' },
{ "object", 1, NULL, OPTION_OBJECT },
+ { "image-opts", 0, NULL, OPTION_IMAGE_OPTS },
{ NULL, 0, NULL, 0 }
};
int c;
@@ -404,6 +429,7 @@ int main(int argc, char **argv)
int flags = BDRV_O_UNMAP;
Error *local_error = NULL;
QDict *opts = NULL;
+ const char *format = NULL;
#ifdef CONFIG_POSIX
signal(SIGPIPE, SIG_IGN);
@@ -431,10 +457,7 @@ int main(int argc, char **argv)
}
break;
case 'f':
- if (!opts) {
- opts = qdict_new();
- }
- qdict_put(opts, "driver", qstring_from_str(optarg));
+ format = optarg;
break;
case 'c':
add_user_command(optarg);
@@ -466,13 +489,16 @@ int main(int argc, char **argv)
usage(progname);
exit(0);
case OPTION_OBJECT: {
- QemuOpts *qopts = NULL;
+ QemuOpts *qopts;
qopts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!qopts) {
exit(1);
}
} break;
+ case OPTION_IMAGE_OPTS:
+ imageOpts = true;
+ break;
default:
usage(progname);
exit(1);
@@ -484,6 +510,11 @@ int main(int argc, char **argv)
exit(1);
}
+ if (format && imageOpts) {
+ error_report("--image-opts and -f are mutually exclusive");
+ exit(1);
+ }
+
if (qemu_init_main_loop(&local_error)) {
error_report_err(local_error);
exit(1);
@@ -516,7 +547,21 @@ int main(int argc, char **argv)
}
if ((argc - optind) == 1) {
- openfile(argv[optind], flags, opts);
+ if (imageOpts) {
+ QemuOpts *qopts = NULL;
+ qopts = qemu_opts_parse_noisily(&file_opts, argv[optind], false);
+ if (!qopts) {
+ exit(1);
+ }
+ opts = qemu_opts_to_qdict(qopts, NULL);
+ openfile(NULL, flags, opts);
+ } else {
+ if (format) {
+ opts = qdict_new();
+ qdict_put(opts, "driver", qstring_from_str(format));
+ }
+ openfile(argv[optind], flags, opts);
+ }
}
command_loop();