diff options
Diffstat (limited to 'qemu/qemu-io.c')
| -rw-r--r-- | qemu/qemu-io.c | 587 |
1 files changed, 0 insertions, 587 deletions
diff --git a/qemu/qemu-io.c b/qemu/qemu-io.c deleted file mode 100644 index 0598251e7..000000000 --- a/qemu/qemu-io.c +++ /dev/null @@ -1,587 +0,0 @@ -/* - * Command line utility to exercise the QEMU I/O path. - * - * Copyright (C) 2009 Red Hat, Inc. - * Copyright (c) 2003-2005 Silicon Graphics, Inc. - * - * 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> - -#include "qapi/error.h" -#include "qemu-io.h" -#include "qemu/error-report.h" -#include "qemu/main-loop.h" -#include "qemu/option.h" -#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" -#include "crypto/init.h" - -#define CMD_NOFILE_OK 0x01 - -static char *progname; - -static BlockBackend *qemuio_blk; - -/* qemu-io commands passed using -c */ -static int ncmdline; -static char **cmdline; -static bool imageOpts; - -static ReadLineState *readline_state; - -static int close_f(BlockBackend *blk, int argc, char **argv) -{ - blk_unref(qemuio_blk); - qemuio_blk = NULL; - return 0; -} - -static const cmdinfo_t close_cmd = { - .name = "close", - .altname = "c", - .cfunc = close_f, - .oneline = "close the current open file", -}; - -static int openfile(char *name, int flags, bool writethrough, QDict *opts) -{ - Error *local_err = NULL; - BlockDriverState *bs; - - if (qemuio_blk) { - error_report("file open already, try 'help close'"); - QDECREF(opts); - return 1; - } - - qemuio_blk = blk_new_open(name, NULL, opts, flags, &local_err); - if (!qemuio_blk) { - error_reportf_err(local_err, "can't open%s%s: ", - name ? " device " : "", name ?: ""); - 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) -{ - printf( -"\n" -" opens a new file in the requested mode\n" -"\n" -" Example:\n" -" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n" -"\n" -" 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" -" -n, -- disable host cache\n" -" -o, -- options to be given to the block driver" -"\n"); -} - -static int open_f(BlockBackend *blk, int argc, char **argv); - -static const cmdinfo_t open_cmd = { - .name = "open", - .altname = "o", - .cfunc = open_f, - .argmin = 1, - .argmax = -1, - .flags = CMD_NOFILE_OK, - .args = "[-Crsn] [-o options] [path]", - .oneline = "open the file specified by path", - .help = open_help, -}; - -static QemuOptsList empty_opts = { - .name = "drive", - .merge_lists = true, - .head = QTAILQ_HEAD_INITIALIZER(empty_opts.head), - .desc = { - /* no elements => accept any params */ - { /* end of list */ } - }, -}; - -static int open_f(BlockBackend *blk, int argc, char **argv) -{ - int flags = 0; - int readonly = 0; - bool writethrough = true; - int c; - QemuOpts *qopts; - QDict *opts; - - while ((c = getopt(argc, argv, "snrgo:")) != -1) { - switch (c) { - case 's': - flags |= BDRV_O_SNAPSHOT; - break; - case 'n': - flags |= BDRV_O_NOCACHE; - writethrough = false; - break; - case 'r': - 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; - } - break; - default: - qemu_opts_reset(&empty_opts); - return qemuio_command_usage(&open_cmd); - } - } - - if (!readonly) { - 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); - - if (optind == argc - 1) { - return openfile(argv[optind], flags, writethrough, opts); - } else if (optind == argc) { - return openfile(NULL, flags, writethrough, opts); - } else { - QDECREF(opts); - return qemuio_command_usage(&open_cmd); - } -} - -static int quit_f(BlockBackend *blk, int argc, char **argv) -{ - return 1; -} - -static const cmdinfo_t quit_cmd = { - .name = "quit", - .altname = "q", - .cfunc = quit_f, - .argmin = -1, - .argmax = -1, - .flags = CMD_FLAG_GLOBAL, - .oneline = "exit the program", -}; - -static void usage(const char *name) -{ - printf( -"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" -" -r, --read-only export read-only\n" -" -s, --snapshot use snapshot file\n" -" -n, --nocache disable host cache\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 FILE enable trace events listed in the given file\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", - name, name); -} - -static char *get_prompt(void) -{ - static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ]; - - if (!prompt[0]) { - snprintf(prompt, sizeof(prompt), "%s> ", progname); - } - - return prompt; -} - -static void GCC_FMT_ATTR(2, 3) readline_printf_func(void *opaque, - const char *fmt, ...) -{ - va_list ap; - va_start(ap, fmt); - vprintf(fmt, ap); - va_end(ap); -} - -static void readline_flush_func(void *opaque) -{ - fflush(stdout); -} - -static void readline_func(void *opaque, const char *str, void *readline_opaque) -{ - char **line = readline_opaque; - *line = g_strdup(str); -} - -static void completion_match(const char *cmd, void *opaque) -{ - readline_add_completion(readline_state, cmd); -} - -static void readline_completion_func(void *opaque, const char *str) -{ - readline_set_completion_index(readline_state, strlen(str)); - qemuio_complete_command(str, completion_match, NULL); -} - -static char *fetchline_readline(void) -{ - char *line = NULL; - - readline_start(readline_state, get_prompt(), 0, readline_func, &line); - while (!line) { - int ch = getchar(); - if (ch == EOF) { - break; - } - readline_handle_byte(readline_state, ch); - } - return line; -} - -#define MAXREADLINESZ 1024 -static char *fetchline_fgets(void) -{ - char *p, *line = g_malloc(MAXREADLINESZ); - - if (!fgets(line, MAXREADLINESZ, stdin)) { - g_free(line); - return NULL; - } - - p = line + strlen(line); - if (p != line && p[-1] == '\n') { - p[-1] = '\0'; - } - - return line; -} - -static char *fetchline(void) -{ - if (readline_state) { - return fetchline_readline(); - } else { - return fetchline_fgets(); - } -} - -static void prep_fetchline(void *opaque) -{ - int *fetchable = opaque; - - qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL); - *fetchable= 1; -} - -static void command_loop(void) -{ - int i, done = 0, fetchable = 0, prompted = 0; - char *input; - - for (i = 0; !done && i < ncmdline; i++) { - done = qemuio_command(qemuio_blk, cmdline[i]); - } - if (cmdline) { - g_free(cmdline); - return; - } - - while (!done) { - if (!prompted) { - printf("%s", get_prompt()); - fflush(stdout); - qemu_set_fd_handler(STDIN_FILENO, prep_fetchline, NULL, &fetchable); - prompted = 1; - } - - main_loop_wait(false); - - if (!fetchable) { - continue; - } - - input = fetchline(); - if (input == NULL) { - break; - } - done = qemuio_command(qemuio_blk, input); - g_free(input); - - prompted = 0; - fetchable = 0; - } - qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL); -} - -static void add_user_command(char *optarg) -{ - cmdline = g_renew(char *, cmdline, ++ncmdline); - cmdline[ncmdline-1] = optarg; -} - -static void reenable_tty_echo(void) -{ - qemu_set_tty_echo(STDIN_FILENO, true); -} - -enum { - OPTION_OBJECT = 256, - OPTION_IMAGE_OPTS = 257, -}; - -static QemuOptsList qemu_object_opts = { - .name = "object", - .implied_opt_name = "qom-type", - .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), - .desc = { - { } - }, -}; - - -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; - const char *sopt = "hVc:d:f:rsnmgkt:T:"; - const struct option lopt[] = { - { "help", no_argument, NULL, 'h' }, - { "version", no_argument, NULL, 'V' }, - { "offset", required_argument, NULL, 'o' }, - { "cmd", required_argument, NULL, 'c' }, - { "format", required_argument, NULL, 'f' }, - { "read-only", no_argument, NULL, 'r' }, - { "snapshot", no_argument, NULL, 's' }, - { "nocache", no_argument, NULL, 'n' }, - { "misalign", no_argument, NULL, 'm' }, - { "native-aio", no_argument, NULL, 'k' }, - { "discard", required_argument, NULL, 'd' }, - { "cache", required_argument, NULL, 't' }, - { "trace", required_argument, NULL, 'T' }, - { "object", required_argument, NULL, OPTION_OBJECT }, - { "image-opts", no_argument, NULL, OPTION_IMAGE_OPTS }, - { NULL, 0, NULL, 0 } - }; - int c; - int opt_index = 0; - int flags = BDRV_O_UNMAP; - bool writethrough = true; - Error *local_error = NULL; - QDict *opts = NULL; - const char *format = NULL; - -#ifdef CONFIG_POSIX - signal(SIGPIPE, SIG_IGN); -#endif - - progname = basename(argv[0]); - qemu_init_exec_dir(argv[0]); - - if (qcrypto_init(&local_error) < 0) { - error_reportf_err(local_error, "cannot initialize crypto: "); - exit(1); - } - - 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) { - switch (c) { - case 's': - flags |= BDRV_O_SNAPSHOT; - break; - case 'n': - flags |= BDRV_O_NOCACHE; - writethrough = false; - break; - case 'd': - if (bdrv_parse_discard_flags(optarg, &flags) < 0) { - error_report("Invalid discard option: %s", optarg); - exit(1); - } - break; - case 'f': - format = optarg; - break; - case 'c': - add_user_command(optarg); - break; - case 'r': - readonly = 1; - break; - case 'm': - qemuio_misalign = true; - break; - case 'k': - flags |= BDRV_O_NATIVE_AIO; - break; - case 't': - if (bdrv_parse_cache_mode(optarg, &flags, &writethrough) < 0) { - error_report("Invalid cache option: %s", optarg); - exit(1); - } - break; - case 'T': - if (!trace_init_backends()) { - exit(1); /* error message will have been printed */ - } - break; - case 'V': - printf("%s version %s\n", progname, QEMU_VERSION); - exit(0); - case 'h': - usage(progname); - exit(0); - case OPTION_OBJECT: { - 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); - } - } - - if ((argc - optind) > 1) { - usage(progname); - 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); - } - - if (qemu_opts_foreach(&qemu_object_opts, - user_creatable_add_opts_foreach, - NULL, NULL)) { - exit(1); - } - - /* initialize commands */ - qemuio_add_command(&quit_cmd); - qemuio_add_command(&open_cmd); - qemuio_add_command(&close_cmd); - - if (isatty(STDIN_FILENO)) { - readline_state = readline_init(readline_printf_func, - readline_flush_func, - NULL, - readline_completion_func); - qemu_set_tty_echo(STDIN_FILENO, false); - atexit(reenable_tty_echo); - } - - /* open the device */ - if (!readonly) { - flags |= BDRV_O_RDWR; - } - - if ((argc - optind) == 1) { - 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, writethrough, opts); - } else { - if (format) { - opts = qdict_new(); - qdict_put(opts, "driver", qstring_from_str(format)); - } - openfile(argv[optind], flags, writethrough, opts); - } - } - command_loop(); - - /* - * Make sure all outstanding requests complete before the program exits. - */ - bdrv_drain_all(); - - blk_unref(qemuio_blk); - g_free(readline_state); - return 0; -} |