*/
#include "qapi-visit.h"
#include "qapi/qmp-output-visitor.h"
-#include "qjson.h"
+#include "qapi/qmp/qjson.h"
#include "qemu-common.h"
-#include "qemu-option.h"
-#include "qemu-error.h"
-#include "osdep.h"
-#include "sysemu.h"
-#include "block_int.h"
+#include "qemu/option.h"
+#include "qemu/error-report.h"
+#include "qemu/osdep.h"
+#include "sysemu/sysemu.h"
+#include "block/block_int.h"
#include <getopt.h>
#include <stdio.h>
static int img_create(int argc, char **argv)
{
- int c, ret = 0;
+ int c;
uint64_t img_size = -1;
const char *fmt = "raw";
const char *base_fmt = NULL;
const char *filename;
const char *base_filename = NULL;
char *options = NULL;
+ Error *local_err = NULL;
for(;;) {
c = getopt(argc, argv, "F:b:f:he6o:");
char *end;
sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B);
if (sval < 0 || *end) {
- error_report("Invalid image size specified! You may use k, M, G or "
- "T suffixes for ");
- error_report("kilobytes, megabytes, gigabytes and terabytes.");
- ret = -1;
- goto out;
+ if (sval == -ERANGE) {
+ error_report("Image size must be less than 8 EiB!");
+ } else {
+ error_report("Invalid image size specified! You may use k, M, "
+ "G or T suffixes for ");
+ error_report("kilobytes, megabytes, gigabytes and terabytes.");
+ }
+ return 1;
}
img_size = (uint64_t)sval;
}
if (options && is_help_option(options)) {
- ret = print_block_option_help(filename, fmt);
- goto out;
+ return print_block_option_help(filename, fmt);
}
- ret = bdrv_img_create(filename, fmt, base_filename, base_fmt,
- options, img_size, BDRV_O_FLAGS);
-out:
- if (ret) {
+ bdrv_img_create(filename, fmt, base_filename, base_fmt,
+ options, img_size, BDRV_O_FLAGS, &local_err);
+ if (error_is_set(&local_err)) {
+ error_report("%s", error_get_pretty(local_err));
+ error_free(local_err);
return 1;
}
+
return 0;
}
QEMUOptionParameter *out_baseimg_param;
char *options = NULL;
const char *snapshot_name = NULL;
- float local_progress;
+ float local_progress = 0;
int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */
fmt = NULL;
sector_num = 0;
nb_sectors = total_sectors;
- local_progress = (float)100 /
- (nb_sectors / MIN(nb_sectors, cluster_sectors));
+ if (nb_sectors != 0) {
+ local_progress = (float)100 /
+ (nb_sectors / MIN(nb_sectors, cluster_sectors));
+ }
for(;;) {
int64_t bs_num;
sector_num = 0; // total number of sectors converted so far
nb_sectors = total_sectors - sector_num;
- local_progress = (float)100 /
- (nb_sectors / MIN(nb_sectors, IO_BUF_SIZE / 512));
+ if (nb_sectors != 0) {
+ local_progress = (float)100 /
+ (nb_sectors / MIN(nb_sectors, IO_BUF_SIZE / 512));
+ }
for(;;) {
nb_sectors = total_sectors - sector_num;
g_free(sn_tab);
}
+static void dump_json_image_info_list(ImageInfoList *list)
+{
+ Error *errp = NULL;
+ QString *str;
+ QmpOutputVisitor *ov = qmp_output_visitor_new();
+ QObject *obj;
+ visit_type_ImageInfoList(qmp_output_get_visitor(ov),
+ &list, NULL, &errp);
+ obj = qmp_output_get_qobject(ov);
+ str = qobject_to_json_pretty(obj);
+ assert(str != NULL);
+ printf("%s\n", qstring_get_str(str));
+ qobject_decref(obj);
+ qmp_output_visitor_cleanup(ov);
+ QDECREF(str);
+}
+
static void collect_snapshots(BlockDriverState *bs , ImageInfo *info)
{
int i, sn_count;
printf("backing file format: %s\n", info->backing_filename_format);
}
}
+
+ if (info->has_snapshots) {
+ SnapshotInfoList *elem;
+ char buf[256];
+
+ printf("Snapshot list:\n");
+ printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL));
+
+ /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but
+ * we convert to the block layer's native QEMUSnapshotInfo for now.
+ */
+ for (elem = info->snapshots; elem; elem = elem->next) {
+ QEMUSnapshotInfo sn = {
+ .vm_state_size = elem->value->vm_state_size,
+ .date_sec = elem->value->date_sec,
+ .date_nsec = elem->value->date_nsec,
+ .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL +
+ elem->value->vm_clock_nsec,
+ };
+
+ pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id);
+ pstrcpy(sn.name, sizeof(sn.name), elem->value->name);
+ printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), &sn));
+ }
+ }
+}
+
+static void dump_human_image_info_list(ImageInfoList *list)
+{
+ ImageInfoList *elem;
+ bool delim = false;
+
+ for (elem = list; elem; elem = elem->next) {
+ if (delim) {
+ printf("\n");
+ }
+ delim = true;
+
+ dump_human_image_info(elem->value);
+ }
+}
+
+static gboolean str_equal_func(gconstpointer a, gconstpointer b)
+{
+ return strcmp(a, b) == 0;
+}
+
+/**
+ * Open an image file chain and return an ImageInfoList
+ *
+ * @filename: topmost image filename
+ * @fmt: topmost image format (may be NULL to autodetect)
+ * @chain: true - enumerate entire backing file chain
+ * false - only topmost image file
+ *
+ * Returns a list of ImageInfo objects or NULL if there was an error opening an
+ * image file. If there was an error a message will have been printed to
+ * stderr.
+ */
+static ImageInfoList *collect_image_info_list(const char *filename,
+ const char *fmt,
+ bool chain)
+{
+ ImageInfoList *head = NULL;
+ ImageInfoList **last = &head;
+ GHashTable *filenames;
+
+ filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL);
+
+ while (filename) {
+ BlockDriverState *bs;
+ ImageInfo *info;
+ ImageInfoList *elem;
+
+ if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) {
+ error_report("Backing file '%s' creates an infinite loop.",
+ filename);
+ goto err;
+ }
+ g_hash_table_insert(filenames, (gpointer)filename, NULL);
+
+ bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING,
+ false);
+ if (!bs) {
+ goto err;
+ }
+
+ info = g_new0(ImageInfo, 1);
+ collect_image_info(bs, info, filename, fmt);
+ collect_snapshots(bs, info);
+
+ elem = g_new0(ImageInfoList, 1);
+ elem->value = info;
+ *last = elem;
+ last = &elem->next;
+
+ bdrv_delete(bs);
+
+ filename = fmt = NULL;
+ if (chain) {
+ if (info->has_full_backing_filename) {
+ filename = info->full_backing_filename;
+ } else if (info->has_backing_filename) {
+ filename = info->backing_filename;
+ }
+ if (info->has_backing_filename_format) {
+ fmt = info->backing_filename_format;
+ }
+ }
+ }
+ g_hash_table_destroy(filenames);
+ return head;
+
+err:
+ qapi_free_ImageInfoList(head);
+ g_hash_table_destroy(filenames);
+ return NULL;
}
-enum {OPTION_OUTPUT = 256};
+enum {
+ OPTION_OUTPUT = 256,
+ OPTION_BACKING_CHAIN = 257,
+};
typedef enum OutputFormat {
OFORMAT_JSON,
{
int c;
OutputFormat output_format = OFORMAT_HUMAN;
+ bool chain = false;
const char *filename, *fmt, *output;
- BlockDriverState *bs;
- ImageInfo *info;
+ ImageInfoList *list;
fmt = NULL;
output = NULL;
{"help", no_argument, 0, 'h'},
{"format", required_argument, 0, 'f'},
{"output", required_argument, 0, OPTION_OUTPUT},
+ {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:h",
case OPTION_OUTPUT:
output = optarg;
break;
+ case OPTION_BACKING_CHAIN:
+ chain = true;
+ break;
}
}
if (optind >= argc) {
return 1;
}
- bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING, false);
- if (!bs) {
+ list = collect_image_info_list(filename, fmt, chain);
+ if (!list) {
return 1;
}
- info = g_new0(ImageInfo, 1);
- collect_image_info(bs, info, filename, fmt);
-
switch (output_format) {
case OFORMAT_HUMAN:
- dump_human_image_info(info);
- dump_snapshots(bs);
+ dump_human_image_info_list(list);
break;
case OFORMAT_JSON:
- collect_snapshots(bs, info);
- dump_json_image_info(info);
+ if (chain) {
+ dump_json_image_info_list(list);
+ } else {
+ dump_json_image_info(list->value);
+ }
break;
}
- qapi_free_ImageInfo(info);
- bdrv_delete(bs);
+ qapi_free_ImageInfoList(list);
return 0;
}
error_report("Could not open old backing file '%s'", backing_name);
goto out;
}
-
- bs_new_backing = bdrv_new("new_backing");
- ret = bdrv_open(bs_new_backing, out_baseimg, BDRV_O_FLAGS,
+ if (out_baseimg[0]) {
+ bs_new_backing = bdrv_new("new_backing");
+ ret = bdrv_open(bs_new_backing, out_baseimg, BDRV_O_FLAGS,
new_backing_drv);
- if (ret) {
- error_report("Could not open new backing file '%s'", out_baseimg);
- goto out;
+ if (ret) {
+ error_report("Could not open new backing file '%s'",
+ out_baseimg);
+ goto out;
+ }
}
}
if (!unsafe) {
uint64_t num_sectors;
uint64_t old_backing_num_sectors;
- uint64_t new_backing_num_sectors;
+ uint64_t new_backing_num_sectors = 0;
uint64_t sector;
int n;
uint8_t * buf_old;
uint8_t * buf_new;
- float local_progress;
+ float local_progress = 0;
buf_old = qemu_blockalign(bs, IO_BUF_SIZE);
buf_new = qemu_blockalign(bs, IO_BUF_SIZE);
bdrv_get_geometry(bs, &num_sectors);
bdrv_get_geometry(bs_old_backing, &old_backing_num_sectors);
- bdrv_get_geometry(bs_new_backing, &new_backing_num_sectors);
+ if (bs_new_backing) {
+ bdrv_get_geometry(bs_new_backing, &new_backing_num_sectors);
+ }
+
+ if (num_sectors != 0) {
+ local_progress = (float)100 /
+ (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512));
+ }
- local_progress = (float)100 /
- (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512));
for (sector = 0; sector < num_sectors; sector += n) {
/* How many sectors can we handle with the next read? */
}
}
- if (sector >= new_backing_num_sectors) {
+ if (sector >= new_backing_num_sectors || !bs_new_backing) {
memset(buf_new, 0, n * BDRV_SECTOR_SIZE);
} else {
if (sector + n > new_backing_num_sectors) {
* backing file are overwritten in the COW file now, so the visible content
* doesn't change when we switch the backing file.
*/
- ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt);
+ if (out_baseimg && *out_baseimg) {
+ ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt);
+ } else {
+ ret = bdrv_change_backing_file(bs, NULL, NULL);
+ }
+
if (ret == -ENOSPC) {
error_report("Could not change the backing file to '%s': No "
"space left in the file header", out_baseimg);
}
/* Parse size */
- param = qemu_opts_create(&resize_options, NULL, 0, NULL);
+ param = qemu_opts_create_nofail(&resize_options);
if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) {
/* Error message already printed when size parsing fails */
ret = -1;
error_set_progname(argv[0]);
+ qemu_init_main_loop();
bdrv_init();
if (argc < 2)
help();
cmdname = argv[1];
argc--; argv++;
- qemu_init_main_loop();
-
/* find the command */
for(cmd = img_cmds; cmd->name != NULL; cmd++) {
if (!strcmp(cmdname, cmd->name)) {
projects / qemu.git / blobdiff