blob: 8e38b288b7bbcbd3c5ae8326d587204a3b039ba3 [file] [log] [blame]
aliguorie3aff4f2009-04-05 19:14:04 +00001/*
2 * Command line utility to exercise the QEMU I/O path.
3 *
4 * Copyright (C) 2009 Red Hat, Inc.
5 * Copyright (c) 2003-2005 Silicon Graphics, Inc.
6 *
7 * This work is licensed under the terms of the GNU GPL, version 2 or later.
8 * See the COPYING file in the top-level directory.
9 */
Peter Maydell80c71a22016-01-18 18:01:42 +000010#include "qemu/osdep.h"
aliguorie3aff4f2009-04-05 19:14:04 +000011#include <getopt.h>
Stefan Weilc32d7662009-08-31 22:16:16 +020012#include <libgen.h>
aliguorie3aff4f2009-04-05 19:14:04 +000013
Markus Armbrusterda34e652016-03-14 09:01:28 +010014#include "qapi/error.h"
Kevin Wolf3d219942013-06-05 14:19:39 +020015#include "qemu-io.h"
Markus Armbrusterd49b6832015-03-17 18:29:20 +010016#include "qemu/error-report.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010017#include "qemu/main-loop.h"
Max Reitzb543c5c2013-10-11 14:02:10 +020018#include "qemu/option.h"
19#include "qemu/config-file.h"
Stefan Hajnoczi0cf17e12013-11-14 11:54:17 +010020#include "qemu/readline.h"
Denis V. Luneve9a80852016-06-17 17:44:11 +030021#include "qemu/log.h"
Markus Armbrusterd49b6832015-03-17 18:29:20 +010022#include "qapi/qmp/qstring.h"
Fam Zheng459571f2017-05-03 00:35:41 +080023#include "qapi/qmp/qbool.h"
Daniel P. Berrange9ba371b2016-02-17 10:10:16 +000024#include "qom/object_interfaces.h"
Markus Armbruster26f54e92014-10-07 13:59:04 +020025#include "sysemu/block-backend.h"
Paolo Bonzini737e1502012-12-17 18:19:44 +010026#include "block/block_int.h"
Stefan Hajnoczid7bb72c2012-03-12 16:36:07 +000027#include "trace/control.h"
Daniel P. Berrangec2297082016-04-06 12:12:06 +010028#include "crypto/init.h"
aliguorie3aff4f2009-04-05 19:14:04 +000029
Devin Nakamura43642b32011-07-11 11:22:16 -040030#define CMD_NOFILE_OK 0x01
aliguorie3aff4f2009-04-05 19:14:04 +000031
Stefan Weilf9883882014-03-05 22:23:00 +010032static char *progname;
aliguorie3aff4f2009-04-05 19:14:04 +000033
Markus Armbruster26f54e92014-10-07 13:59:04 +020034static BlockBackend *qemuio_blk;
Kevin Wolf191c2892010-09-16 13:18:08 +020035
Kevin Wolfd1174f12013-06-05 14:19:37 +020036/* qemu-io commands passed using -c */
37static int ncmdline;
38static char **cmdline;
Daniel P. Berrange499afa22016-02-17 10:10:18 +000039static bool imageOpts;
Kevin Wolfd1174f12013-06-05 14:19:37 +020040
Stefan Hajnoczi0cf17e12013-11-14 11:54:17 +010041static ReadLineState *readline_state;
42
Max Reitz4c7b7e92015-02-05 13:58:22 -050043static int close_f(BlockBackend *blk, int argc, char **argv)
aliguorie3aff4f2009-04-05 19:14:04 +000044{
Markus Armbruster26f54e92014-10-07 13:59:04 +020045 blk_unref(qemuio_blk);
Markus Armbruster26f54e92014-10-07 13:59:04 +020046 qemuio_blk = NULL;
Devin Nakamura43642b32011-07-11 11:22:16 -040047 return 0;
aliguorie3aff4f2009-04-05 19:14:04 +000048}
49
50static const cmdinfo_t close_cmd = {
Devin Nakamura43642b32011-07-11 11:22:16 -040051 .name = "close",
52 .altname = "c",
53 .cfunc = close_f,
54 .oneline = "close the current open file",
aliguorie3aff4f2009-04-05 19:14:04 +000055};
56
Fam Zheng459571f2017-05-03 00:35:41 +080057static int openfile(char *name, int flags, bool writethrough, bool force_share,
58 QDict *opts)
aliguorie3aff4f2009-04-05 19:14:04 +000059{
Max Reitz34b5d2c2013-09-05 14:45:29 +020060 Error *local_err = NULL;
Daniel P. Berrange8caf0212015-05-12 17:09:21 +010061 BlockDriverState *bs;
Max Reitz34b5d2c2013-09-05 14:45:29 +020062
Max Reitz1b58b432015-02-05 13:58:20 -050063 if (qemuio_blk) {
Markus Armbrusterb9884682015-12-18 16:35:18 +010064 error_report("file open already, try 'help close'");
Markus Armbruster29f26012014-05-28 11:16:59 +020065 QDECREF(opts);
Devin Nakamura43642b32011-07-11 11:22:16 -040066 return 1;
67 }
aliguorie3aff4f2009-04-05 19:14:04 +000068
Fam Zheng459571f2017-05-03 00:35:41 +080069 if (force_share) {
70 if (!opts) {
71 opts = qdict_new();
72 }
73 if (qdict_haskey(opts, BDRV_OPT_FORCE_SHARE)
74 && !qdict_get_bool(opts, BDRV_OPT_FORCE_SHARE)) {
75 error_report("-U conflicts with image options");
76 QDECREF(opts);
77 return 1;
78 }
Eric Blake579cf1d2017-05-15 14:54:39 -050079 qdict_put_bool(opts, BDRV_OPT_FORCE_SHARE, true);
Fam Zheng459571f2017-05-03 00:35:41 +080080 }
Max Reitzefaa7c42016-03-16 19:54:38 +010081 qemuio_blk = blk_new_open(name, NULL, opts, flags, &local_err);
Max Reitz1b58b432015-02-05 13:58:20 -050082 if (!qemuio_blk) {
Markus Armbrusterb9884682015-12-18 16:35:18 +010083 error_reportf_err(local_err, "can't open%s%s: ",
84 name ? " device " : "", name ?: "");
Markus Armbrusterdbb651c2014-09-08 18:50:58 +020085 return 1;
Devin Nakamura43642b32011-07-11 11:22:16 -040086 }
Christoph Hellwig1db69472009-07-15 23:11:21 +020087
Daniel P. Berrange8caf0212015-05-12 17:09:21 +010088 bs = blk_bs(qemuio_blk);
Daniel P. Berrange4ef130f2016-03-21 14:11:43 +000089 if (bdrv_is_encrypted(bs) && bdrv_key_required(bs)) {
Daniel P. Berrange8caf0212015-05-12 17:09:21 +010090 char password[256];
91 printf("Disk image '%s' is encrypted.\n", name);
92 if (qemu_read_password(password, sizeof(password)) < 0) {
93 error_report("No password given");
94 goto error;
95 }
96 if (bdrv_set_key(bs, password) < 0) {
97 error_report("invalid password");
98 goto error;
99 }
100 }
101
Kevin Wolfe151fc12016-03-15 12:52:30 +0100102 blk_set_enable_write_cache(qemuio_blk, !writethrough);
Daniel P. Berrange8caf0212015-05-12 17:09:21 +0100103
Devin Nakamura43642b32011-07-11 11:22:16 -0400104 return 0;
Daniel P. Berrange8caf0212015-05-12 17:09:21 +0100105
106 error:
107 blk_unref(qemuio_blk);
108 qemuio_blk = NULL;
109 return 1;
aliguorie3aff4f2009-04-05 19:14:04 +0000110}
111
Devin Nakamura43642b32011-07-11 11:22:16 -0400112static void open_help(void)
aliguorie3aff4f2009-04-05 19:14:04 +0000113{
Devin Nakamura43642b32011-07-11 11:22:16 -0400114 printf(
aliguorie3aff4f2009-04-05 19:14:04 +0000115"\n"
116" opens a new file in the requested mode\n"
117"\n"
118" Example:\n"
Eric Blakee4e12bb2016-05-07 21:16:40 -0600119" 'open -n -o driver=raw /tmp/data' - opens raw data file read-write, uncached\n"
aliguorie3aff4f2009-04-05 19:14:04 +0000120"\n"
121" Opens a file for subsequent use by all of the other qemu-io commands.\n"
aliguorie3aff4f2009-04-05 19:14:04 +0000122" -r, -- open file read-only\n"
123" -s, -- use snapshot file\n"
Eric Blakeb8d970f2016-05-07 21:16:41 -0600124" -n, -- disable host cache, short for -t none\n"
Fam Zheng459571f2017-05-03 00:35:41 +0800125" -U, -- force shared permissions\n"
Eric Blakeb8d970f2016-05-07 21:16:41 -0600126" -k, -- use kernel AIO implementation (on Linux only)\n"
127" -t, -- use the given cache mode for the image\n"
128" -d, -- use the given discard mode for the image\n"
Max Reitzb543c5c2013-10-11 14:02:10 +0200129" -o, -- options to be given to the block driver"
aliguorie3aff4f2009-04-05 19:14:04 +0000130"\n");
131}
132
Max Reitz4c7b7e92015-02-05 13:58:22 -0500133static int open_f(BlockBackend *blk, int argc, char **argv);
Blue Swirl22a2bdc2009-11-21 09:06:46 +0000134
135static const cmdinfo_t open_cmd = {
Devin Nakamura43642b32011-07-11 11:22:16 -0400136 .name = "open",
137 .altname = "o",
138 .cfunc = open_f,
139 .argmin = 1,
140 .argmax = -1,
141 .flags = CMD_NOFILE_OK,
Fam Zheng459571f2017-05-03 00:35:41 +0800142 .args = "[-rsnkU] [-t cache] [-d discard] [-o options] [path]",
Devin Nakamura43642b32011-07-11 11:22:16 -0400143 .oneline = "open the file specified by path",
144 .help = open_help,
Blue Swirl22a2bdc2009-11-21 09:06:46 +0000145};
aliguorie3aff4f2009-04-05 19:14:04 +0000146
Max Reitzb543c5c2013-10-11 14:02:10 +0200147static QemuOptsList empty_opts = {
148 .name = "drive",
Markus Armbruster443422f2014-05-28 11:16:58 +0200149 .merge_lists = true,
Max Reitzb543c5c2013-10-11 14:02:10 +0200150 .head = QTAILQ_HEAD_INITIALIZER(empty_opts.head),
151 .desc = {
152 /* no elements => accept any params */
153 { /* end of list */ }
154 },
155};
156
Max Reitz4c7b7e92015-02-05 13:58:22 -0500157static int open_f(BlockBackend *blk, int argc, char **argv)
aliguorie3aff4f2009-04-05 19:14:04 +0000158{
Eric Blakeb8d970f2016-05-07 21:16:41 -0600159 int flags = BDRV_O_UNMAP;
Devin Nakamura43642b32011-07-11 11:22:16 -0400160 int readonly = 0;
Kevin Wolfe151fc12016-03-15 12:52:30 +0100161 bool writethrough = true;
Devin Nakamura43642b32011-07-11 11:22:16 -0400162 int c;
Max Reitzb543c5c2013-10-11 14:02:10 +0200163 QemuOpts *qopts;
Markus Armbruster443422f2014-05-28 11:16:58 +0200164 QDict *opts;
Fam Zheng459571f2017-05-03 00:35:41 +0800165 bool force_share = false;
aliguorie3aff4f2009-04-05 19:14:04 +0000166
Fam Zheng459571f2017-05-03 00:35:41 +0800167 while ((c = getopt(argc, argv, "snro:kt:d:U")) != -1) {
Devin Nakamura43642b32011-07-11 11:22:16 -0400168 switch (c) {
169 case 's':
170 flags |= BDRV_O_SNAPSHOT;
171 break;
172 case 'n':
Kevin Wolfe151fc12016-03-15 12:52:30 +0100173 flags |= BDRV_O_NOCACHE;
174 writethrough = false;
Devin Nakamura43642b32011-07-11 11:22:16 -0400175 break;
176 case 'r':
177 readonly = 1;
178 break;
Eric Blakeb8d970f2016-05-07 21:16:41 -0600179 case 'k':
180 flags |= BDRV_O_NATIVE_AIO;
181 break;
182 case 't':
183 if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) {
184 error_report("Invalid cache option: %s", optarg);
185 qemu_opts_reset(&empty_opts);
186 return 0;
187 }
188 break;
189 case 'd':
190 if (bdrv_parse_discard_flags(optarg, &flags) < 0) {
191 error_report("Invalid discard option: %s", optarg);
192 qemu_opts_reset(&empty_opts);
193 return 0;
194 }
195 break;
Max Reitzb543c5c2013-10-11 14:02:10 +0200196 case 'o':
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000197 if (imageOpts) {
198 printf("--image-opts and 'open -o' are mutually exclusive\n");
Eric Blakeb8d970f2016-05-07 21:16:41 -0600199 qemu_opts_reset(&empty_opts);
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000200 return 0;
201 }
Markus Armbruster70b94332015-02-13 12:50:26 +0100202 if (!qemu_opts_parse_noisily(&empty_opts, optarg, false)) {
Markus Armbruster443422f2014-05-28 11:16:58 +0200203 qemu_opts_reset(&empty_opts);
Max Reitzb543c5c2013-10-11 14:02:10 +0200204 return 0;
205 }
Max Reitzb543c5c2013-10-11 14:02:10 +0200206 break;
Fam Zheng459571f2017-05-03 00:35:41 +0800207 case 'U':
208 force_share = true;
209 break;
Devin Nakamura43642b32011-07-11 11:22:16 -0400210 default:
Markus Armbruster443422f2014-05-28 11:16:58 +0200211 qemu_opts_reset(&empty_opts);
Kevin Wolfc2cdf5c2013-06-05 14:19:36 +0200212 return qemuio_command_usage(&open_cmd);
Naphtali Spreif5edb012010-01-17 16:48:13 +0200213 }
Devin Nakamura43642b32011-07-11 11:22:16 -0400214 }
aliguorie3aff4f2009-04-05 19:14:04 +0000215
Devin Nakamura43642b32011-07-11 11:22:16 -0400216 if (!readonly) {
217 flags |= BDRV_O_RDWR;
218 }
aliguorie3aff4f2009-04-05 19:14:04 +0000219
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000220 if (imageOpts && (optind == argc - 1)) {
221 if (!qemu_opts_parse_noisily(&empty_opts, argv[optind], false)) {
222 qemu_opts_reset(&empty_opts);
223 return 0;
224 }
225 optind++;
226 }
227
Markus Armbruster443422f2014-05-28 11:16:58 +0200228 qopts = qemu_opts_find(&empty_opts, NULL);
229 opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL;
230 qemu_opts_reset(&empty_opts);
231
Max Reitzfd0fee32013-12-20 19:28:20 +0100232 if (optind == argc - 1) {
Fam Zheng459571f2017-05-03 00:35:41 +0800233 return openfile(argv[optind], flags, writethrough, force_share, opts);
Max Reitzfd0fee32013-12-20 19:28:20 +0100234 } else if (optind == argc) {
Fam Zheng459571f2017-05-03 00:35:41 +0800235 return openfile(NULL, flags, writethrough, force_share, opts);
Max Reitzfd0fee32013-12-20 19:28:20 +0100236 } else {
Markus Armbruster29f26012014-05-28 11:16:59 +0200237 QDECREF(opts);
Kevin Wolfc2cdf5c2013-06-05 14:19:36 +0200238 return qemuio_command_usage(&open_cmd);
Devin Nakamura43642b32011-07-11 11:22:16 -0400239 }
aliguorie3aff4f2009-04-05 19:14:04 +0000240}
241
Max Reitz4c7b7e92015-02-05 13:58:22 -0500242static int quit_f(BlockBackend *blk, int argc, char **argv)
Kevin Wolfe681be72013-06-05 14:19:34 +0200243{
244 return 1;
245}
246
247static const cmdinfo_t quit_cmd = {
248 .name = "quit",
249 .altname = "q",
250 .cfunc = quit_f,
251 .argmin = -1,
252 .argmax = -1,
253 .flags = CMD_FLAG_GLOBAL,
254 .oneline = "exit the program",
255};
256
aliguorie3aff4f2009-04-05 19:14:04 +0000257static void usage(const char *name)
258{
Devin Nakamura43642b32011-07-11 11:22:16 -0400259 printf(
Eric Blakee4e12bb2016-05-07 21:16:40 -0600260"Usage: %s [OPTIONS]... [-c STRING]... [file]\n"
Stefan Weil84844a22009-06-22 15:08:47 +0200261"QEMU Disk exerciser\n"
aliguorie3aff4f2009-04-05 19:14:04 +0000262"\n"
Daniel P. Berrange9ba371b2016-02-17 10:10:16 +0000263" --object OBJECTDEF define an object such as 'secret' for\n"
264" passwords and/or encryption keys\n"
Eric Blakee4e12bb2016-05-07 21:16:40 -0600265" --image-opts treat file as option string\n"
Maria Kustovad208cc32014-03-18 09:59:19 +0400266" -c, --cmd STRING execute command with its arguments\n"
267" from the given string\n"
Kevin Wolfbe6273d2014-11-20 16:27:06 +0100268" -f, --format FMT specifies the block driver to use\n"
aliguorie3aff4f2009-04-05 19:14:04 +0000269" -r, --read-only export read-only\n"
270" -s, --snapshot use snapshot file\n"
Eric Blakee4e12bb2016-05-07 21:16:40 -0600271" -n, --nocache disable host cache, short for -t none\n"
aliguorie3aff4f2009-04-05 19:14:04 +0000272" -m, --misalign misalign allocations for O_DIRECT\n"
Christoph Hellwig5c6c3a62009-08-20 16:58:35 +0200273" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
Kevin Wolf592fa072012-04-18 12:07:39 +0200274" -t, --cache=MODE use the given cache mode for the image\n"
Eric Blakee4e12bb2016-05-07 21:16:40 -0600275" -d, --discard=MODE use the given discard mode for the image\n"
Denis V. Luneve9a80852016-06-17 17:44:11 +0300276" -T, --trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n"
277" specify tracing options\n"
278" see qemu-img(1) man page for full description\n"
Fam Zheng459571f2017-05-03 00:35:41 +0800279" -U, --force-share force shared permissions\n"
aliguorie3aff4f2009-04-05 19:14:04 +0000280" -h, --help display this help and exit\n"
281" -V, --version output version information and exit\n"
Maria Kustovad208cc32014-03-18 09:59:19 +0400282"\n"
283"See '%s -c help' for information on available commands."
aliguorie3aff4f2009-04-05 19:14:04 +0000284"\n",
Maria Kustovad208cc32014-03-18 09:59:19 +0400285 name, name);
aliguorie3aff4f2009-04-05 19:14:04 +0000286}
287
Kevin Wolfd1174f12013-06-05 14:19:37 +0200288static char *get_prompt(void)
289{
290 static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ];
291
292 if (!prompt[0]) {
293 snprintf(prompt, sizeof(prompt), "%s> ", progname);
294 }
295
296 return prompt;
297}
298
Stefan Weild5d15072014-01-25 18:18:23 +0100299static void GCC_FMT_ATTR(2, 3) readline_printf_func(void *opaque,
300 const char *fmt, ...)
Kevin Wolfd1174f12013-06-05 14:19:37 +0200301{
Stefan Hajnoczi0cf17e12013-11-14 11:54:17 +0100302 va_list ap;
303 va_start(ap, fmt);
304 vprintf(fmt, ap);
305 va_end(ap);
306}
307
308static void readline_flush_func(void *opaque)
309{
310 fflush(stdout);
311}
312
313static void readline_func(void *opaque, const char *str, void *readline_opaque)
314{
315 char **line = readline_opaque;
316 *line = g_strdup(str);
317}
318
Stefan Hajnoczi46940202013-11-14 11:54:18 +0100319static void completion_match(const char *cmd, void *opaque)
320{
321 readline_add_completion(readline_state, cmd);
322}
323
Stefan Hajnoczi0cf17e12013-11-14 11:54:17 +0100324static void readline_completion_func(void *opaque, const char *str)
325{
Stefan Hajnoczi46940202013-11-14 11:54:18 +0100326 readline_set_completion_index(readline_state, strlen(str));
327 qemuio_complete_command(str, completion_match, NULL);
Stefan Hajnoczi0cf17e12013-11-14 11:54:17 +0100328}
329
330static char *fetchline_readline(void)
331{
332 char *line = NULL;
333
334 readline_start(readline_state, get_prompt(), 0, readline_func, &line);
335 while (!line) {
336 int ch = getchar();
337 if (ch == EOF) {
338 break;
339 }
340 readline_handle_byte(readline_state, ch);
Kevin Wolfd1174f12013-06-05 14:19:37 +0200341 }
342 return line;
343}
Kevin Wolfd1174f12013-06-05 14:19:37 +0200344
Stefan Hajnoczi0cf17e12013-11-14 11:54:17 +0100345#define MAXREADLINESZ 1024
346static char *fetchline_fgets(void)
Kevin Wolfd1174f12013-06-05 14:19:37 +0200347{
348 char *p, *line = g_malloc(MAXREADLINESZ);
349
350 if (!fgets(line, MAXREADLINESZ, stdin)) {
351 g_free(line);
352 return NULL;
353 }
354
355 p = line + strlen(line);
356 if (p != line && p[-1] == '\n') {
357 p[-1] = '\0';
358 }
359
360 return line;
361}
Stefan Hajnoczi0cf17e12013-11-14 11:54:17 +0100362
363static char *fetchline(void)
364{
365 if (readline_state) {
366 return fetchline_readline();
367 } else {
368 return fetchline_fgets();
369 }
370}
Kevin Wolfd1174f12013-06-05 14:19:37 +0200371
372static void prep_fetchline(void *opaque)
373{
374 int *fetchable = opaque;
375
376 qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
377 *fetchable= 1;
378}
379
380static void command_loop(void)
381{
382 int i, done = 0, fetchable = 0, prompted = 0;
383 char *input;
384
385 for (i = 0; !done && i < ncmdline; i++) {
Max Reitz4c7b7e92015-02-05 13:58:22 -0500386 done = qemuio_command(qemuio_blk, cmdline[i]);
Kevin Wolfd1174f12013-06-05 14:19:37 +0200387 }
388 if (cmdline) {
389 g_free(cmdline);
390 return;
391 }
392
393 while (!done) {
394 if (!prompted) {
395 printf("%s", get_prompt());
396 fflush(stdout);
397 qemu_set_fd_handler(STDIN_FILENO, prep_fetchline, NULL, &fetchable);
398 prompted = 1;
399 }
400
401 main_loop_wait(false);
402
403 if (!fetchable) {
404 continue;
405 }
406
407 input = fetchline();
408 if (input == NULL) {
409 break;
410 }
Max Reitz4c7b7e92015-02-05 13:58:22 -0500411 done = qemuio_command(qemuio_blk, input);
Kevin Wolfd1174f12013-06-05 14:19:37 +0200412 g_free(input);
413
414 prompted = 0;
415 fetchable = 0;
416 }
417 qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
418}
419
420static void add_user_command(char *optarg)
421{
Markus Armbruster5839e532014-08-19 10:31:08 +0200422 cmdline = g_renew(char *, cmdline, ++ncmdline);
Kevin Wolfd1174f12013-06-05 14:19:37 +0200423 cmdline[ncmdline-1] = optarg;
424}
425
Stefan Hajnoczi0cf17e12013-11-14 11:54:17 +0100426static void reenable_tty_echo(void)
427{
428 qemu_set_tty_echo(STDIN_FILENO, true);
429}
430
Daniel P. Berrange9ba371b2016-02-17 10:10:16 +0000431enum {
432 OPTION_OBJECT = 256,
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000433 OPTION_IMAGE_OPTS = 257,
Daniel P. Berrange9ba371b2016-02-17 10:10:16 +0000434};
435
436static QemuOptsList qemu_object_opts = {
437 .name = "object",
438 .implied_opt_name = "qom-type",
439 .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
440 .desc = {
441 { }
442 },
443};
444
445
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000446static QemuOptsList file_opts = {
447 .name = "file",
448 .implied_opt_name = "file",
449 .head = QTAILQ_HEAD_INITIALIZER(file_opts.head),
450 .desc = {
451 /* no elements => accept any params */
452 { /* end of list */ }
453 },
454};
455
aliguorie3aff4f2009-04-05 19:14:04 +0000456int main(int argc, char **argv)
457{
Devin Nakamura43642b32011-07-11 11:22:16 -0400458 int readonly = 0;
Fam Zheng459571f2017-05-03 00:35:41 +0800459 const char *sopt = "hVc:d:f:rsnmkt:T:U";
Devin Nakamura43642b32011-07-11 11:22:16 -0400460 const struct option lopt[] = {
Daniel P. Berrangea5134162016-02-17 10:10:23 +0000461 { "help", no_argument, NULL, 'h' },
462 { "version", no_argument, NULL, 'V' },
Daniel P. Berrangea5134162016-02-17 10:10:23 +0000463 { "cmd", required_argument, NULL, 'c' },
464 { "format", required_argument, NULL, 'f' },
465 { "read-only", no_argument, NULL, 'r' },
466 { "snapshot", no_argument, NULL, 's' },
467 { "nocache", no_argument, NULL, 'n' },
468 { "misalign", no_argument, NULL, 'm' },
469 { "native-aio", no_argument, NULL, 'k' },
470 { "discard", required_argument, NULL, 'd' },
471 { "cache", required_argument, NULL, 't' },
472 { "trace", required_argument, NULL, 'T' },
473 { "object", required_argument, NULL, OPTION_OBJECT },
474 { "image-opts", no_argument, NULL, OPTION_IMAGE_OPTS },
Fam Zheng459571f2017-05-03 00:35:41 +0800475 { "force-share", no_argument, 0, 'U'},
Devin Nakamura43642b32011-07-11 11:22:16 -0400476 { NULL, 0, NULL, 0 }
477 };
478 int c;
479 int opt_index = 0;
Paolo Bonzini9e8f1832013-02-08 14:06:11 +0100480 int flags = BDRV_O_UNMAP;
Kevin Wolfe151fc12016-03-15 12:52:30 +0100481 bool writethrough = true;
Chrysostomos Nanakos2f78e492014-09-18 14:30:49 +0300482 Error *local_error = NULL;
Max Reitz1b58b432015-02-05 13:58:20 -0500483 QDict *opts = NULL;
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000484 const char *format = NULL;
Denis V. Luneve9a80852016-06-17 17:44:11 +0300485 char *trace_file = NULL;
Fam Zheng459571f2017-05-03 00:35:41 +0800486 bool force_share = false;
aliguorie3aff4f2009-04-05 19:14:04 +0000487
MORITA Kazutaka526eda12013-07-23 17:30:11 +0900488#ifdef CONFIG_POSIX
489 signal(SIGPIPE, SIG_IGN);
490#endif
491
Daniel P. Berrangefe4db842016-10-04 14:35:52 +0100492 module_call_init(MODULE_INIT_TRACE);
Devin Nakamura43642b32011-07-11 11:22:16 -0400493 progname = basename(argv[0]);
Fam Zheng10f5bff2014-02-10 14:48:51 +0800494 qemu_init_exec_dir(argv[0]);
aliguorie3aff4f2009-04-05 19:14:04 +0000495
Eduardo Habkoste8f2d272016-05-12 11:10:04 -0300496 qcrypto_init(&error_fatal);
Daniel P. Berrangec2297082016-04-06 12:12:06 +0100497
Daniel P. Berrange064097d2016-02-10 18:41:01 +0000498 module_call_init(MODULE_INIT_QOM);
Daniel P. Berrange9ba371b2016-02-17 10:10:16 +0000499 qemu_add_opts(&qemu_object_opts);
Denis V. Luneve9a80852016-06-17 17:44:11 +0300500 qemu_add_opts(&qemu_trace_opts);
Kevin Wolfbe6273d2014-11-20 16:27:06 +0100501 bdrv_init();
502
Devin Nakamura43642b32011-07-11 11:22:16 -0400503 while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) {
504 switch (c) {
505 case 's':
506 flags |= BDRV_O_SNAPSHOT;
507 break;
508 case 'n':
Kevin Wolfe151fc12016-03-15 12:52:30 +0100509 flags |= BDRV_O_NOCACHE;
510 writethrough = false;
Devin Nakamura43642b32011-07-11 11:22:16 -0400511 break;
Paolo Bonzini9e8f1832013-02-08 14:06:11 +0100512 case 'd':
513 if (bdrv_parse_discard_flags(optarg, &flags) < 0) {
514 error_report("Invalid discard option: %s", optarg);
515 exit(1);
516 }
517 break;
Kevin Wolfbe6273d2014-11-20 16:27:06 +0100518 case 'f':
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000519 format = optarg;
Kevin Wolfbe6273d2014-11-20 16:27:06 +0100520 break;
Devin Nakamura43642b32011-07-11 11:22:16 -0400521 case 'c':
522 add_user_command(optarg);
523 break;
524 case 'r':
525 readonly = 1;
526 break;
527 case 'm':
Stefan Weilf9883882014-03-05 22:23:00 +0100528 qemuio_misalign = true;
Devin Nakamura43642b32011-07-11 11:22:16 -0400529 break;
Devin Nakamura43642b32011-07-11 11:22:16 -0400530 case 'k':
531 flags |= BDRV_O_NATIVE_AIO;
532 break;
Kevin Wolf592fa072012-04-18 12:07:39 +0200533 case 't':
Kevin Wolfe151fc12016-03-15 12:52:30 +0100534 if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) {
Kevin Wolf592fa072012-04-18 12:07:39 +0200535 error_report("Invalid cache option: %s", optarg);
536 exit(1);
537 }
538 break;
Stefan Hajnoczid7bb72c2012-03-12 16:36:07 +0000539 case 'T':
Denis V. Luneve9a80852016-06-17 17:44:11 +0300540 g_free(trace_file);
541 trace_file = trace_opt_parse(optarg);
Stefan Hajnoczid7bb72c2012-03-12 16:36:07 +0000542 break;
Devin Nakamura43642b32011-07-11 11:22:16 -0400543 case 'V':
Kevin Wolf02da3862013-06-05 14:19:40 +0200544 printf("%s version %s\n", progname, QEMU_VERSION);
Devin Nakamura43642b32011-07-11 11:22:16 -0400545 exit(0);
546 case 'h':
547 usage(progname);
548 exit(0);
Fam Zheng459571f2017-05-03 00:35:41 +0800549 case 'U':
550 force_share = true;
551 break;
Daniel P. Berrange9ba371b2016-02-17 10:10:16 +0000552 case OPTION_OBJECT: {
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000553 QemuOpts *qopts;
Daniel P. Berrange9ba371b2016-02-17 10:10:16 +0000554 qopts = qemu_opts_parse_noisily(&qemu_object_opts,
555 optarg, true);
556 if (!qopts) {
557 exit(1);
558 }
559 } break;
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000560 case OPTION_IMAGE_OPTS:
561 imageOpts = true;
562 break;
Devin Nakamura43642b32011-07-11 11:22:16 -0400563 default:
564 usage(progname);
565 exit(1);
Naphtali Spreif5edb012010-01-17 16:48:13 +0200566 }
Devin Nakamura43642b32011-07-11 11:22:16 -0400567 }
aliguorie3aff4f2009-04-05 19:14:04 +0000568
Devin Nakamura43642b32011-07-11 11:22:16 -0400569 if ((argc - optind) > 1) {
570 usage(progname);
571 exit(1);
572 }
aliguorie3aff4f2009-04-05 19:14:04 +0000573
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000574 if (format && imageOpts) {
575 error_report("--image-opts and -f are mutually exclusive");
576 exit(1);
577 }
578
Chrysostomos Nanakos2f78e492014-09-18 14:30:49 +0300579 if (qemu_init_main_loop(&local_error)) {
Markus Armbruster565f65d2015-02-12 13:55:05 +0100580 error_report_err(local_error);
Chrysostomos Nanakos2f78e492014-09-18 14:30:49 +0300581 exit(1);
582 }
Zhi Yong Wua57d1142012-02-19 22:24:59 +0800583
Daniel P. Berrange9ba371b2016-02-17 10:10:16 +0000584 if (qemu_opts_foreach(&qemu_object_opts,
585 user_creatable_add_opts_foreach,
Markus Armbruster51b9b472016-04-27 16:29:09 +0200586 NULL, NULL)) {
Daniel P. Berrange9ba371b2016-02-17 10:10:16 +0000587 exit(1);
588 }
589
Denis V. Luneve9a80852016-06-17 17:44:11 +0300590 if (!trace_init_backends()) {
591 exit(1);
592 }
593 trace_init_file(trace_file);
594 qemu_set_log(LOG_TRACE);
595
Devin Nakamura43642b32011-07-11 11:22:16 -0400596 /* initialize commands */
Kevin Wolfc2cdf5c2013-06-05 14:19:36 +0200597 qemuio_add_command(&quit_cmd);
598 qemuio_add_command(&open_cmd);
599 qemuio_add_command(&close_cmd);
Devin Nakamura43642b32011-07-11 11:22:16 -0400600
Stefan Hajnoczi0cf17e12013-11-14 11:54:17 +0100601 if (isatty(STDIN_FILENO)) {
602 readline_state = readline_init(readline_printf_func,
603 readline_flush_func,
604 NULL,
605 readline_completion_func);
606 qemu_set_tty_echo(STDIN_FILENO, false);
607 atexit(reenable_tty_echo);
608 }
609
Devin Nakamura43642b32011-07-11 11:22:16 -0400610 /* open the device */
611 if (!readonly) {
612 flags |= BDRV_O_RDWR;
613 }
614
615 if ((argc - optind) == 1) {
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000616 if (imageOpts) {
617 QemuOpts *qopts = NULL;
618 qopts = qemu_opts_parse_noisily(&file_opts, argv[optind], false);
619 if (!qopts) {
620 exit(1);
621 }
622 opts = qemu_opts_to_qdict(qopts, NULL);
Fam Zheng459571f2017-05-03 00:35:41 +0800623 if (openfile(NULL, flags, writethrough, force_share, opts)) {
Nir Sofferb7aa1312017-02-01 02:31:18 +0200624 exit(1);
625 }
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000626 } else {
627 if (format) {
628 opts = qdict_new();
Eric Blake46f5ac22017-04-27 16:58:17 -0500629 qdict_put_str(opts, "driver", format);
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000630 }
Fam Zheng459571f2017-05-03 00:35:41 +0800631 if (openfile(argv[optind], flags, writethrough,
632 force_share, opts)) {
Nir Sofferb7aa1312017-02-01 02:31:18 +0200633 exit(1);
634 }
Daniel P. Berrange499afa22016-02-17 10:10:18 +0000635 }
Devin Nakamura43642b32011-07-11 11:22:16 -0400636 }
637 command_loop();
638
639 /*
Stefan Hajnoczi922453b2011-11-30 12:23:43 +0000640 * Make sure all outstanding requests complete before the program exits.
Devin Nakamura43642b32011-07-11 11:22:16 -0400641 */
Stefan Hajnoczi922453b2011-11-30 12:23:43 +0000642 bdrv_drain_all();
Devin Nakamura43642b32011-07-11 11:22:16 -0400643
Markus Armbruster26f54e92014-10-07 13:59:04 +0200644 blk_unref(qemuio_blk);
Stefan Hajnoczi0cf17e12013-11-14 11:54:17 +0100645 g_free(readline_state);
Devin Nakamura43642b32011-07-11 11:22:16 -0400646 return 0;
aliguorie3aff4f2009-04-05 19:14:04 +0000647}