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[Qemu-block] [PULL 05/34] qemu-io: add support for --object command line
From: |
Kevin Wolf |
Subject: |
[Qemu-block] [PULL 05/34] qemu-io: add support for --object command line arg |
Date: |
Mon, 22 Feb 2016 17:32:23 +0100 |
From: "Daniel P. Berrange" <address@hidden>
Allow creation of user creatable object types with qemu-io
via a new --object command line arg. This will be used to supply
passwords and/or encryption keys to the various block driver
backends via the recently added 'secret' object type.
# printf letmein > mypasswd.txt
# qemu-io --object secret,id=sec0,file=mypasswd.txt \
...other args...
Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Daniel P. Berrange <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
qemu-io.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/qemu-io.c b/qemu-io.c
index 6c0c028..969c8bf 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -18,6 +18,7 @@
#include "qemu/config-file.h"
#include "qemu/readline.h"
#include "qapi/qmp/qstring.h"
+#include "qom/object_interfaces.h"
#include "sysemu/block-backend.h"
#include "block/block_int.h"
#include "trace/control.h"
@@ -200,6 +201,8 @@ static void usage(const char *name)
"Usage: %s [-h] [-V] [-rsnm] [-f FMT] [-c STRING] ... [file]\n"
"QEMU Disk exerciser\n"
"\n"
+" --object OBJECTDEF define an object such as 'secret' for\n"
+" passwords and/or encryption keys\n"
" -c, --cmd STRING execute command with its arguments\n"
" from the given string\n"
" -f, --format FMT specifies the block driver to use\n"
@@ -361,6 +364,20 @@ static void reenable_tty_echo(void)
qemu_set_tty_echo(STDIN_FILENO, true);
}
+enum {
+ OPTION_OBJECT = 256,
+};
+
+static QemuOptsList qemu_object_opts = {
+ .name = "object",
+ .implied_opt_name = "qom-type",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
+ .desc = {
+ { }
+ },
+};
+
+
int main(int argc, char **argv)
{
int readonly = 0;
@@ -379,6 +396,7 @@ int main(int argc, char **argv)
{ "discard", 1, NULL, 'd' },
{ "cache", 1, NULL, 't' },
{ "trace", 1, NULL, 'T' },
+ { "object", 1, NULL, OPTION_OBJECT },
{ NULL, 0, NULL, 0 }
};
int c;
@@ -395,6 +413,7 @@ int main(int argc, char **argv)
qemu_init_exec_dir(argv[0]);
module_call_init(MODULE_INIT_QOM);
+ qemu_add_opts(&qemu_object_opts);
bdrv_init();
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) {
@@ -446,6 +465,14 @@ int main(int argc, char **argv)
case 'h':
usage(progname);
exit(0);
+ case OPTION_OBJECT: {
+ QemuOpts *qopts = NULL;
+ qopts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!qopts) {
+ exit(1);
+ }
+ } break;
default:
usage(progname);
exit(1);
@@ -462,6 +489,13 @@ int main(int argc, char **argv)
exit(1);
}
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_error)) {
+ error_report_err(local_error);
+ exit(1);
+ }
+
/* initialize commands */
qemuio_add_command(&quit_cmd);
qemuio_add_command(&open_cmd);
--
1.8.3.1
- [Qemu-block] [PULL 00/34] Block layer patches, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 02/34] quorum: fix segfault when read fails in fifo mode, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 03/34] spec: add qcow2 bitmaps extension specification, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 01/34] qemu-img: initialize MapEntry object, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 05/34] qemu-io: add support for --object command line arg,
Kevin Wolf <=
- [Qemu-block] [PULL 07/34] qemu-io: allow specifying image as a set of options args, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 08/34] qemu-nbd: allow specifying image as a set of options args, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 04/34] block: Fix -incoming with snapshot=on, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 06/34] qemu-img: add support for --object command line arg, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 12/34] qemu-io: use no_argument/required_argument constants, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 10/34] qemu-nbd: don't overlap long option values with short options, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 13/34] block migration: Activate image on destination before writing to it, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 14/34] throttle: Make throttle_compute_timer() static, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 09/34] qemu-img: allow specifying image as a set of options args, Kevin Wolf, 2016/02/22
- [Qemu-block] [PULL 11/34] qemu-nbd: use no_argument/required_argument constants, Kevin Wolf, 2016/02/22