* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
+
#include "qemu/osdep.h"
#include <getopt.h>
#include <libgen.h>
+#ifndef _WIN32
+#include <termios.h>
+#endif
+#include "qemu-common.h"
#include "qapi/error.h"
#include "qemu-io.h"
#include "qemu/error-report.h"
#include "qemu/main-loop.h"
+#include "qemu/module.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qemu/readline.h"
#include "qemu/log.h"
#include "qapi/qmp/qstring.h"
+#include "qapi/qmp/qdict.h"
#include "qom/object_interfaces.h"
#include "sysemu/block-backend.h"
#include "block/block_int.h"
#include "trace/control.h"
#include "crypto/init.h"
+#include "qemu-version.h"
#define CMD_NOFILE_OK 0x01
-static char *progname;
-
static BlockBackend *qemuio_blk;
+static bool quit_qemu_io;
/* qemu-io commands passed using -c */
static int ncmdline;
static ReadLineState *readline_state;
+static int ttyEOF;
+
+static int get_eof_char(void)
+{
+#ifdef _WIN32
+ return 0x4; /* Ctrl-D */
+#else
+ struct termios tty;
+ if (tcgetattr(STDIN_FILENO, &tty) != 0) {
+ if (errno == ENOTTY) {
+ return 0x0; /* just expect read() == 0 */
+ } else {
+ return 0x4; /* Ctrl-D */
+ }
+ }
+
+ return tty.c_cc[VEOF];
+#endif
+}
+
static int close_f(BlockBackend *blk, int argc, char **argv)
{
blk_unref(qemuio_blk);
.oneline = "close the current open file",
};
-static int openfile(char *name, int flags, bool writethrough, QDict *opts)
+static int openfile(char *name, int flags, bool writethrough, bool force_share,
+ QDict *opts)
{
Error *local_err = NULL;
- BlockDriverState *bs;
if (qemuio_blk) {
error_report("file open already, try 'help close'");
- QDECREF(opts);
+ qobject_unref(opts);
return 1;
}
+ if (force_share) {
+ if (!opts) {
+ opts = qdict_new();
+ }
+ if (qdict_haskey(opts, BDRV_OPT_FORCE_SHARE)
+ && strcmp(qdict_get_str(opts, BDRV_OPT_FORCE_SHARE), "on")) {
+ error_report("-U conflicts with image options");
+ qobject_unref(opts);
+ return 1;
+ }
+ qdict_put_str(opts, BDRV_OPT_FORCE_SHARE, "on");
+ }
qemuio_blk = blk_new_open(name, NULL, opts, flags, &local_err);
if (!qemuio_blk) {
error_reportf_err(local_err, "can't open%s%s: ",
return 1;
}
- bs = blk_bs(qemuio_blk);
- if (bdrv_is_encrypted(bs) && bdrv_key_required(bs)) {
- char password[256];
- printf("Disk image '%s' is encrypted.\n", name);
- if (qemu_read_password(password, sizeof(password)) < 0) {
- error_report("No password given");
- goto error;
- }
- if (bdrv_set_key(bs, password) < 0) {
- error_report("invalid password");
- goto error;
- }
- }
-
blk_set_enable_write_cache(qemuio_blk, !writethrough);
return 0;
-
- error:
- blk_unref(qemuio_blk);
- qemuio_blk = NULL;
- return 1;
}
static void open_help(void)
" Opens a file for subsequent use by all of the other qemu-io commands.\n"
" -r, -- open file read-only\n"
" -s, -- use snapshot file\n"
+" -C, -- use copy-on-read\n"
" -n, -- disable host cache, short for -t none\n"
+" -U, -- force shared permissions\n"
" -k, -- use kernel AIO implementation (on Linux only)\n"
" -t, -- use the given cache mode for the image\n"
" -d, -- use the given discard mode for the image\n"
.argmin = 1,
.argmax = -1,
.flags = CMD_NOFILE_OK,
- .args = "[-rsnk] [-t cache] [-d discard] [-o options] [path]",
+ .args = "[-rsCnkU] [-t cache] [-d discard] [-o options] [path]",
.oneline = "open the file specified by path",
.help = open_help,
};
int readonly = 0;
bool writethrough = true;
int c;
+ int ret;
QemuOpts *qopts;
QDict *opts;
+ bool force_share = false;
- while ((c = getopt(argc, argv, "snro:kt:d:")) != -1) {
+ while ((c = getopt(argc, argv, "snCro:kt:d:U")) != -1) {
switch (c) {
case 's':
flags |= BDRV_O_SNAPSHOT;
flags |= BDRV_O_NOCACHE;
writethrough = false;
break;
+ case 'C':
+ flags |= BDRV_O_COPY_ON_READ;
+ break;
case 'r':
readonly = 1;
break;
if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) {
error_report("Invalid cache option: %s", optarg);
qemu_opts_reset(&empty_opts);
- return 0;
+ return -EINVAL;
}
break;
case 'd':
if (bdrv_parse_discard_flags(optarg, &flags) < 0) {
error_report("Invalid discard option: %s", optarg);
qemu_opts_reset(&empty_opts);
- return 0;
+ return -EINVAL;
}
break;
case 'o':
if (imageOpts) {
printf("--image-opts and 'open -o' are mutually exclusive\n");
qemu_opts_reset(&empty_opts);
- return 0;
+ return -EINVAL;
}
if (!qemu_opts_parse_noisily(&empty_opts, optarg, false)) {
qemu_opts_reset(&empty_opts);
- return 0;
+ return -EINVAL;
}
break;
+ case 'U':
+ force_share = true;
+ break;
default:
qemu_opts_reset(&empty_opts);
- return qemuio_command_usage(&open_cmd);
+ qemuio_command_usage(&open_cmd);
+ return -EINVAL;
}
}
if (imageOpts && (optind == argc - 1)) {
if (!qemu_opts_parse_noisily(&empty_opts, argv[optind], false)) {
qemu_opts_reset(&empty_opts);
- return 0;
+ return -EINVAL;
}
optind++;
}
qemu_opts_reset(&empty_opts);
if (optind == argc - 1) {
- return openfile(argv[optind], flags, writethrough, opts);
+ ret = openfile(argv[optind], flags, writethrough, force_share, opts);
} else if (optind == argc) {
- return openfile(NULL, flags, writethrough, opts);
+ ret = openfile(NULL, flags, writethrough, force_share, opts);
} else {
- QDECREF(opts);
- return qemuio_command_usage(&open_cmd);
+ qobject_unref(opts);
+ qemuio_command_usage(&open_cmd);
+ return -EINVAL;
+ }
+
+ if (ret) {
+ return -EINVAL;
}
+
+ return 0;
}
static int quit_f(BlockBackend *blk, int argc, char **argv)
{
- return 1;
+ quit_qemu_io = true;
+ return 0;
}
static const cmdinfo_t quit_cmd = {
" -r, --read-only export read-only\n"
" -s, --snapshot use snapshot file\n"
" -n, --nocache disable host cache, short for -t none\n"
+" -C, --copy-on-read enable copy-on-read\n"
" -m, --misalign misalign allocations for O_DIRECT\n"
" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
" -t, --cache=MODE use the given cache mode for the image\n"
" -T, --trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n"
" specify tracing options\n"
" see qemu-img(1) man page for full description\n"
+" -U, --force-share force shared permissions\n"
" -h, --help display this help and exit\n"
" -V, --version output version information and exit\n"
"\n"
-"See '%s -c help' for information on available commands."
-"\n",
+"See '%s -c help' for information on available commands.\n"
+"\n"
+QEMU_HELP_BOTTOM "\n",
name, name);
}
static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ];
if (!prompt[0]) {
- snprintf(prompt, sizeof(prompt), "%s> ", progname);
+ snprintf(prompt, sizeof(prompt), "%s> ", error_get_progname());
}
return prompt;
readline_start(readline_state, get_prompt(), 0, readline_func, &line);
while (!line) {
int ch = getchar();
- if (ch == EOF) {
+ if (ttyEOF != 0x0 && ch == ttyEOF) {
+ printf("\n");
break;
}
readline_handle_byte(readline_state, ch);
*fetchable= 1;
}
-static void command_loop(void)
+static int command_loop(void)
{
- int i, done = 0, fetchable = 0, prompted = 0;
+ int i, fetchable = 0, prompted = 0;
+ int ret, last_error = 0;
char *input;
- for (i = 0; !done && i < ncmdline; i++) {
- done = qemuio_command(qemuio_blk, cmdline[i]);
+ for (i = 0; !quit_qemu_io && i < ncmdline; i++) {
+ ret = qemuio_command(qemuio_blk, cmdline[i]);
+ if (ret < 0) {
+ last_error = ret;
+ }
}
if (cmdline) {
g_free(cmdline);
- return;
+ return last_error;
}
- while (!done) {
+ while (!quit_qemu_io) {
if (!prompted) {
printf("%s", get_prompt());
fflush(stdout);
if (input == NULL) {
break;
}
- done = qemuio_command(qemuio_blk, input);
+ ret = qemuio_command(qemuio_blk, input);
g_free(input);
+ if (ret < 0) {
+ last_error = ret;
+ }
+
prompted = 0;
fetchable = 0;
}
qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
+
+ return last_error;
}
static void add_user_command(char *optarg)
int main(int argc, char **argv)
{
int readonly = 0;
- const char *sopt = "hVc:d:f:rsnmkt:T:";
+ const char *sopt = "hVc:d:f:rsnCmkt:T:U";
const struct option lopt[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{ "read-only", no_argument, NULL, 'r' },
{ "snapshot", no_argument, NULL, 's' },
{ "nocache", no_argument, NULL, 'n' },
+ { "copy-on-read", no_argument, NULL, 'C' },
{ "misalign", no_argument, NULL, 'm' },
{ "native-aio", no_argument, NULL, 'k' },
{ "discard", required_argument, NULL, 'd' },
{ "trace", required_argument, NULL, 'T' },
{ "object", required_argument, NULL, OPTION_OBJECT },
{ "image-opts", no_argument, NULL, OPTION_IMAGE_OPTS },
+ { "force-share", no_argument, 0, 'U'},
{ NULL, 0, NULL, 0 }
};
int c;
int opt_index = 0;
int flags = BDRV_O_UNMAP;
+ int ret;
bool writethrough = true;
Error *local_error = NULL;
QDict *opts = NULL;
const char *format = NULL;
char *trace_file = NULL;
+ bool force_share = false;
#ifdef CONFIG_POSIX
signal(SIGPIPE, SIG_IGN);
#endif
+ error_init(argv[0]);
module_call_init(MODULE_INIT_TRACE);
- progname = basename(argv[0]);
qemu_init_exec_dir(argv[0]);
qcrypto_init(&error_fatal);
flags |= BDRV_O_NOCACHE;
writethrough = false;
break;
+ case 'C':
+ flags |= BDRV_O_COPY_ON_READ;
+ break;
case 'd':
if (bdrv_parse_discard_flags(optarg, &flags) < 0) {
error_report("Invalid discard option: %s", optarg);
trace_file = trace_opt_parse(optarg);
break;
case 'V':
- printf("%s version %s\n", progname, QEMU_VERSION);
+ printf("%s version " QEMU_FULL_VERSION "\n"
+ QEMU_COPYRIGHT "\n", error_get_progname());
exit(0);
case 'h':
- usage(progname);
+ usage(error_get_progname());
exit(0);
+ case 'U':
+ force_share = true;
+ break;
case OPTION_OBJECT: {
QemuOpts *qopts;
qopts = qemu_opts_parse_noisily(&qemu_object_opts,
imageOpts = true;
break;
default:
- usage(progname);
+ usage(error_get_progname());
exit(1);
}
}
if ((argc - optind) > 1) {
- usage(progname);
+ usage(error_get_progname());
exit(1);
}
exit(1);
}
- if (qemu_opts_foreach(&qemu_object_opts,
- user_creatable_add_opts_foreach,
- NULL, NULL)) {
- exit(1);
- }
+ qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &error_fatal);
if (!trace_init_backends()) {
exit(1);
qemuio_add_command(&close_cmd);
if (isatty(STDIN_FILENO)) {
+ ttyEOF = get_eof_char();
readline_state = readline_init(readline_printf_func,
readline_flush_func,
NULL,
exit(1);
}
opts = qemu_opts_to_qdict(qopts, NULL);
- if (openfile(NULL, flags, writethrough, opts)) {
+ if (openfile(NULL, flags, writethrough, force_share, opts)) {
exit(1);
}
} else {
opts = qdict_new();
qdict_put_str(opts, "driver", format);
}
- if (openfile(argv[optind], flags, writethrough, opts)) {
+ if (openfile(argv[optind], flags, writethrough,
+ force_share, opts)) {
exit(1);
}
}
}
- command_loop();
+ ret = command_loop();
/*
* Make sure all outstanding requests complete before the program exits.
blk_unref(qemuio_blk);
g_free(readline_state);
- return 0;
+
+ if (ret < 0) {
+ return 1;
+ } else {
+ return 0;
+ }
}
projects / mirror_qemu.git / blobdiff