* THE SOFTWARE.
*/
#include "qemu-common.h"
+#include "qemu-option.h"
#include "osdep.h"
#include "block_int.h"
-#include <assert.h>
#include <stdio.h>
#ifdef _WIN32
#include <windows.h>
#endif
+typedef struct img_cmd_t {
+ const char *name;
+ int (*handler)(int argc, char **argv);
+} img_cmd_t;
+
/* Default to cache=writeback as data integrity is not important for qemu-tcg. */
#define BRDV_O_FLAGS BDRV_O_CACHE_WB
"QEMU disk image utility\n"
"\n"
"Command syntax:\n"
- " check [-f fmt] filename\n"
- " create [-e] [-6] [-F fmt] [-b base_image] [-f fmt] filename [size]\n"
- " commit [-f fmt] filename\n"
- " convert [-c] [-e] [-6] [-f fmt] [-O output_fmt] [-B output_base_image] filename [filename2 [...]] output_filename\n"
- " info [-f fmt] filename\n"
- " snapshot [-l | -a snapshot | -c snapshot | -d snapshot] filename\n"
+#define DEF(option, callback, arg_string) \
+ " " arg_string "\n"
+#include "qemu-img-cmds.h"
+#undef DEF
+#undef GEN_DOCS
"\n"
"Command parameters:\n"
" 'filename' is a disk image filename\n"
" supported any 'k' or 'K' is ignored\n"
" 'output_filename' is the destination disk image filename\n"
" 'output_fmt' is the destination format\n"
+ " 'options' is a comma separated list of format specific options in a\n"
+ " name=value format. Use -o ? for an overview of the options supported by the\n"
+ " used format\n"
" '-c' indicates that target image must be compressed (qcow format only)\n"
- " '-e' indicates that the target image must be encrypted (qcow format only)\n"
- " '-6' indicates that the target image must use compatibility level 6 (vmdk format only)\n"
" '-h' with or without a command shows this help and lists the supported formats\n"
"\n"
"Parameters to snapshot subcommand:\n"
return bs;
}
+static void add_old_style_options(const char *fmt, QEMUOptionParameter *list,
+ int flags, const char *base_filename, const char *base_fmt)
+{
+ if (flags & BLOCK_FLAG_ENCRYPT) {
+ if (set_option_parameter(list, BLOCK_OPT_ENCRYPT, "on")) {
+ error("Encryption not supported for file format '%s'", fmt);
+ }
+ }
+ if (flags & BLOCK_FLAG_COMPAT6) {
+ if (set_option_parameter(list, BLOCK_OPT_COMPAT6, "on")) {
+ error("VMDK version 6 not supported for file format '%s'", fmt);
+ }
+ }
+
+ if (base_filename) {
+ if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) {
+ error("Backing file not supported for file format '%s'", fmt);
+ }
+ }
+ if (base_fmt) {
+ if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) {
+ error("Backing file format not supported for file format '%s'", fmt);
+ }
+ }
+}
+
static int img_create(int argc, char **argv)
{
int c, ret, flags;
const char *base_fmt = NULL;
const char *filename;
const char *base_filename = NULL;
- uint64_t size;
- double sizef;
- const char *p;
BlockDriver *drv;
+ QEMUOptionParameter *param = NULL;
+ char *options = NULL;
flags = 0;
for(;;) {
- c = getopt(argc, argv, "F:b:f:he6");
+ c = getopt(argc, argv, "F:b:f:he6o:");
if (c == -1)
break;
switch(c) {
case '6':
flags |= BLOCK_FLAG_COMPAT6;
break;
+ case 'o':
+ options = optarg;
+ break;
}
}
+
+ /* Find driver and parse its options */
+ drv = bdrv_find_format(fmt);
+ if (!drv)
+ error("Unknown file format '%s'", fmt);
+
+ if (options && !strcmp(options, "?")) {
+ print_option_help(drv->create_options);
+ return 0;
+ }
+
+ if (options) {
+ param = parse_option_parameters(options, drv->create_options, param);
+ if (param == NULL) {
+ error("Invalid options for file format '%s'.", fmt);
+ }
+ } else {
+ param = parse_option_parameters("", drv->create_options, param);
+ }
+
+ /* Get the filename */
if (optind >= argc)
help();
filename = argv[optind++];
- size = 0;
- if (base_filename) {
- BlockDriverState *bs;
- BlockDriver *base_drv = NULL;
- if (base_fmt) {
- base_drv = bdrv_find_format(base_fmt);
- if (base_drv == NULL)
- error("Unknown basefile format '%s'", base_fmt);
- }
+ /* Add size to parameters */
+ if (optind < argc) {
+ set_option_parameter(param, BLOCK_OPT_SIZE, argv[optind++]);
+ }
- bs = bdrv_new_open(base_filename, base_fmt);
- bdrv_get_geometry(bs, &size);
- size *= 512;
- bdrv_delete(bs);
- } else {
- if (optind >= argc)
- help();
- p = argv[optind];
- sizef = strtod(p, (char **)&p);
- if (*p == 'M') {
- size = (uint64_t)(sizef * 1024 * 1024);
- } else if (*p == 'G') {
- size = (uint64_t)(sizef * 1024 * 1024 * 1024);
- } else if (*p == 'k' || *p == 'K' || *p == '\0') {
- size = (uint64_t)(sizef * 1024);
+ /* Add old-style options to parameters */
+ add_old_style_options(fmt, param, flags, base_filename, base_fmt);
+
+ // The size for the image must always be specified, with one exception:
+ // If we are using a backing file, we can obtain the size from there
+ if (get_option_parameter(param, BLOCK_OPT_SIZE)->value.n == 0) {
+
+ QEMUOptionParameter *backing_file =
+ get_option_parameter(param, BLOCK_OPT_BACKING_FILE);
+ QEMUOptionParameter *backing_fmt =
+ get_option_parameter(param, BLOCK_OPT_BACKING_FMT);
+
+ if (backing_file && backing_file->value.s) {
+ BlockDriverState *bs;
+ uint64_t size;
+ const char *fmt = NULL;
+ char buf[32];
+
+ if (backing_fmt && backing_fmt->value.s) {
+ if (bdrv_find_format(backing_fmt->value.s)) {
+ fmt = backing_fmt->value.s;
+ } else {
+ error("Unknown backing file format '%s'",
+ backing_fmt->value.s);
+ }
+ }
+
+ bs = bdrv_new_open(backing_file->value.s, fmt);
+ bdrv_get_geometry(bs, &size);
+ size *= 512;
+ bdrv_delete(bs);
+
+ snprintf(buf, sizeof(buf), "%" PRId64, size);
+ set_option_parameter(param, BLOCK_OPT_SIZE, buf);
} else {
- help();
+ error("Image creation needs a size parameter");
}
}
- drv = bdrv_find_format(fmt);
- if (!drv)
- error("Unknown file format '%s'", fmt);
- printf("Formatting '%s', fmt=%s",
- filename, fmt);
- if (flags & BLOCK_FLAG_ENCRYPT)
- printf(", encrypted");
- if (flags & BLOCK_FLAG_COMPAT6)
- printf(", compatibility level=6");
- if (base_filename) {
- printf(", backing_file=%s",
- base_filename);
- if (base_fmt)
- printf(", backing_fmt=%s",
- base_fmt);
- }
- printf(", size=%" PRIu64 " kB\n", size / 1024);
- ret = bdrv_create2(drv, filename, size / 512, base_filename, base_fmt, flags);
+
+ printf("Formatting '%s', fmt=%s ", filename, fmt);
+ print_option_parameters(param);
+ puts("");
+
+ ret = bdrv_create(drv, filename, param);
+ free_option_parameters(param);
+
if (ret < 0) {
if (ret == -ENOTSUP) {
error("Formatting or formatting option not supported for file format '%s'", fmt);
uint8_t buf[IO_BUF_SIZE];
const uint8_t *buf1;
BlockDriverInfo bdi;
+ QEMUOptionParameter *param = NULL;
+ char *options = NULL;
fmt = NULL;
out_fmt = "raw";
out_baseimg = NULL;
flags = 0;
for(;;) {
- c = getopt(argc, argv, "f:O:B:hce6");
+ c = getopt(argc, argv, "f:O:B:hce6o:");
if (c == -1)
break;
switch(c) {
case '6':
flags |= BLOCK_FLAG_COMPAT6;
break;
+ case 'o':
+ options = optarg;
+ break;
}
}
total_sectors += bs_sectors;
}
+ /* Find driver and parse its options */
drv = bdrv_find_format(out_fmt);
if (!drv)
error("Unknown file format '%s'", out_fmt);
- if (flags & BLOCK_FLAG_COMPRESS && drv != &bdrv_qcow && drv != &bdrv_qcow2)
- error("Compression not supported for this file format");
- if (flags & BLOCK_FLAG_ENCRYPT && drv != &bdrv_qcow && drv != &bdrv_qcow2)
- error("Encryption not supported for this file format");
- if (flags & BLOCK_FLAG_COMPAT6 && drv != &bdrv_vmdk)
- error("Alternative compatibility level not supported for this file format");
- if (flags & BLOCK_FLAG_ENCRYPT && flags & BLOCK_FLAG_COMPRESS)
- error("Compression and encryption not supported at the same time");
-
- ret = bdrv_create(drv, out_filename, total_sectors, out_baseimg, flags);
+
+ if (options && !strcmp(options, "?")) {
+ print_option_help(drv->create_options);
+ return 0;
+ }
+
+ if (options) {
+ param = parse_option_parameters(options, drv->create_options, param);
+ if (param == NULL) {
+ error("Invalid options for file format '%s'.", out_fmt);
+ }
+ } else {
+ param = parse_option_parameters("", drv->create_options, param);
+ }
+
+ set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512);
+ add_old_style_options(out_fmt, param, flags, out_baseimg, NULL);
+
+ /* Check if compression is supported */
+ if (flags & BLOCK_FLAG_COMPRESS) {
+ QEMUOptionParameter *encryption =
+ get_option_parameter(param, BLOCK_OPT_ENCRYPT);
+
+ if (!drv->bdrv_write_compressed) {
+ error("Compression not supported for this file format");
+ }
+
+ if (encryption && encryption->value.n) {
+ error("Compression and encryption not supported at the same time");
+ }
+ }
+
+ /* Create the new image */
+ ret = bdrv_create(drv, out_filename, param);
+ free_option_parameters(param);
+
if (ret < 0) {
if (ret == -ENOTSUP) {
error("Formatting not supported for file format '%s'", out_fmt);
if (n > bs_offset + bs_sectors - sector_num)
n = bs_offset + bs_sectors - sector_num;
- if (drv != &bdrv_host_device) {
+ if (strcmp(drv->format_name, "host_device")) {
if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset,
n, &n1)) {
sector_num += n1;
If the output is to a host device, we also write out
sectors that are entirely 0, since whatever data was
already there is garbage, not 0s. */
- if (drv == &bdrv_host_device || out_baseimg ||
+ if (strcmp(drv->format_name, "host_device") == 0 || out_baseimg ||
is_allocated_sectors(buf1, n, &n1)) {
if (bdrv_write(out_bs, sector_num, buf1, n1) < 0)
error("error while writing");
#define SNAPSHOT_APPLY 3
#define SNAPSHOT_DELETE 4
-static void img_snapshot(int argc, char **argv)
+static int img_snapshot(int argc, char **argv)
{
BlockDriverState *bs;
QEMUSnapshotInfo sn;
switch(c) {
case 'h':
help();
- return;
+ return 0;
case 'l':
if (action) {
help();
- return;
+ return 0;
}
action = SNAPSHOT_LIST;
break;
case 'a':
if (action) {
help();
- return;
+ return 0;
}
action = SNAPSHOT_APPLY;
snapshot_name = optarg;
case 'c':
if (action) {
help();
- return;
+ return 0;
}
action = SNAPSHOT_CREATE;
snapshot_name = optarg;
case 'd':
if (action) {
help();
- return;
+ return 0;
}
action = SNAPSHOT_DELETE;
snapshot_name = optarg;
/* Cleanup */
bdrv_delete(bs);
+
+ return 0;
}
+static const img_cmd_t img_cmds[] = {
+#define DEF(option, callback, arg_string) \
+ { option, callback },
+#include "qemu-img-cmds.h"
+#undef DEF
+#undef GEN_DOCS
+ { NULL, NULL, },
+};
+
int main(int argc, char **argv)
{
- const char *cmd;
+ const img_cmd_t *cmd;
+ const char *cmdname;
bdrv_init();
if (argc < 2)
help();
- cmd = argv[1];
+ cmdname = argv[1];
argc--; argv++;
- if (!strcmp(cmd, "create")) {
- img_create(argc, argv);
- } else if (!strcmp(cmd, "check")) {
- img_check(argc, argv);
- } else if (!strcmp(cmd, "commit")) {
- img_commit(argc, argv);
- } else if (!strcmp(cmd, "convert")) {
- img_convert(argc, argv);
- } else if (!strcmp(cmd, "info")) {
- img_info(argc, argv);
- } else if (!strcmp(cmd, "snapshot")) {
- img_snapshot(argc, argv);
- } else {
- help();
+
+ /* find the command */
+ for(cmd = img_cmds; cmd->name != NULL; cmd++) {
+ if (!strcmp(cmdname, cmd->name)) {
+ return cmd->handler(argc, argv);
+ }
}
+
+ /* not found */
+ help();
return 0;
}
projects / qemu / blobdiff