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提交 3babeb15 编写于 作者: D Daniel P. Berrange 提交者： Kevin Wolf
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qemu-img: add support for --object command line arg 

Allow creation of user creatable object types with qemu-img
via a new --object command line arg. This will be used to supply
passwords and/or encryption keys to the various block driver
backends via the recently added 'secret' object type.

 # printf letmein > mypasswd.txt
 # qemu-img info --object secret,id=sec0,file=mypasswd.txt \
      ...other info args...
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
上级 9ba371b6
隐藏空白更改
内联 并排
Showing with 282 addition and 30 deletion
qemu-img-cmds.hx
浏览文件 @ 3babeb15
......@@ -10,68 +10,68 @@ STEXI
ETEXI
DEF("check", img_check,
"check [-q] [-f fmt] [--output=ofmt] [-r [leaks | all]] [-T src_cache] filename")
"check [-q] [--object objectdef] [-f fmt] [--output=ofmt] [-r [leaks | all]] [-T src_cache] filename")
STEXI
@item check [-q] [-f @var{fmt}] [--output=@var{ofmt}] [-r [leaks | all]] [-T @var{src_cache}] @var{filename}
@item check [--object @var{objectdef}] [-q] [-f @var{fmt}] [--output=@var{ofmt}] [-r [leaks | all]] [-T @var{src_cache}] @var{filename}
ETEXI
DEF("create", img_create,
"create [-q] [-f fmt] [-o options] filename [size]")
"create [-q] [--object objectdef] [-f fmt] [-o options] filename [size]")
STEXI
@item create [-q] [-f @var{fmt}] [-o @var{options}] @var{filename} [@var{size}]
@item create [--object @var{objectdef}] [-q] [-f @var{fmt}] [-o @var{options}] @var{filename} [@var{size}]
ETEXI
DEF("commit", img_commit,
"commit [-q] [-f fmt] [-t cache] [-b base] [-d] [-p] filename")
"commit [-q] [--object objectdef] [-f fmt] [-t cache] [-b base] [-d] [-p] filename")
STEXI
@item commit [-q] [-f @var{fmt}] [-t @var{cache}] [-b @var{base}] [-d] [-p] @var{filename}
@item commit [--object @var{objectdef}] [-q] [-f @var{fmt}] [-t @var{cache}] [-b @var{base}] [-d] [-p] @var{filename}
ETEXI
DEF("compare", img_compare,
"compare [-f fmt] [-F fmt] [-T src_cache] [-p] [-q] [-s] filename1 filename2")
"compare [--object objectdef] [-f fmt] [-F fmt] [-T src_cache] [-p] [-q] [-s] filename1 filename2")
STEXI
@item compare [-f @var{fmt}] [-F @var{fmt}] [-T @var{src_cache}] [-p] [-q] [-s] @var{filename1} @var{filename2}
@item compare [--object @var{objectdef}] [-f @var{fmt}] [-F @var{fmt}] [-T @var{src_cache}] [-p] [-q] [-s] @var{filename1} @var{filename2}
ETEXI
DEF("convert", img_convert,
"convert [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-o options] [-s snapshot_id_or_name] [-l snapshot_param] [-S sparse_size] filename [filename2 [...]] output_filename")
"convert [--object objectdef] [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-o options] [-s snapshot_id_or_name] [-l snapshot_param] [-S sparse_size] filename [filename2 [...]] output_filename")
STEXI
@item convert [-c] [-p] [-q] [-n] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-O @var{output_fmt}] [-o @var{options}] [-s @var{snapshot_id_or_name}] [-l @var{snapshot_param}] [-S @var{sparse_size}] @var{filename} [@var{filename2} [...]] @var{output_filename}
@item convert [--object @var{objectdef}] [-c] [-p] [-q] [-n] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-O @var{output_fmt}] [-o @var{options}] [-s @var{snapshot_id_or_name}] [-l @var{snapshot_param}] [-S @var{sparse_size}] @var{filename} [@var{filename2} [...]] @var{output_filename}
ETEXI
DEF("info", img_info,
"info [-f fmt] [--output=ofmt] [--backing-chain] filename")
"info [--object objectdef] [-f fmt] [--output=ofmt] [--backing-chain] filename")
STEXI
@item info [-f @var{fmt}] [--output=@var{ofmt}] [--backing-chain] @var{filename}
@item info [--object @var{objectdef}] [-f @var{fmt}] [--output=@var{ofmt}] [--backing-chain] @var{filename}
ETEXI
DEF("map", img_map,
"map [-f fmt] [--output=ofmt] filename")
"map [--object objectdef] [-f fmt] [--output=ofmt] filename")
STEXI
@item map [-f @var{fmt}] [--output=@var{ofmt}] @var{filename}
@item map [--object @var{objectdef}] [-f @var{fmt}] [--output=@var{ofmt}] @var{filename}
ETEXI
DEF("snapshot", img_snapshot,
"snapshot [-q] [-l | -a snapshot | -c snapshot | -d snapshot] filename")
"snapshot [--object objectdef] [-q] [-l | -a snapshot | -c snapshot | -d snapshot] filename")
STEXI
@item snapshot [-q] [-l | -a @var{snapshot} | -c @var{snapshot} | -d @var{snapshot}] @var{filename}
@item snapshot [--object @var{objectdef}] [-q] [-l | -a @var{snapshot} | -c @var{snapshot} | -d @var{snapshot}] @var{filename}
ETEXI
DEF("rebase", img_rebase,
"rebase [-q] [-f fmt] [-t cache] [-T src_cache] [-p] [-u] -b backing_file [-F backing_fmt] filename")
"rebase [--object objectdef] [-q] [-f fmt] [-t cache] [-T src_cache] [-p] [-u] -b backing_file [-F backing_fmt] filename")
STEXI
@item rebase [-q] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-p] [-u] -b @var{backing_file} [-F @var{backing_fmt}] @var{filename}
@item rebase [--object @var{objectdef}] [-q] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-p] [-u] -b @var{backing_file} [-F @var{backing_fmt}] @var{filename}
ETEXI
DEF("resize", img_resize,
"resize [-q] filename [+ | -]size")
"resize [--object objectdef] [-q] filename [+ | -]size")
STEXI
@item resize [-q] @var{filename} [+ | -]@var{size}
@item resize [--object @var{objectdef}] [-q] @var{filename} [+ | -]@var{size}
ETEXI
DEF("amend", img_amend,
"amend [-p] [-q] [-f fmt] [-t cache] -o options filename")
"amend [--object objectdef] [-p] [-q] [-f fmt] [-t cache] -o options filename")
STEXI
@item amend [-p] [-q] [-f @var{fmt}] [-t @var{cache}] -o @var{options} @var{filename}
@item amend [--object @var{objectdef}] [-p] [-q] [-f @var{fmt}] [-t @var{cache}] -o @var{options} @var{filename}
@end table
ETEXI
qemu-img.c
浏览文件 @ 3babeb15
......@@ -27,8 +27,10 @@
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/qjson.h"
#include "qemu-common.h"
#include "qemu/config-file.h"
#include "qemu/option.h"
#include "qemu/error-report.h"
#include "qom/object_interfaces.h"
#include "sysemu/sysemu.h"
#include "sysemu/block-backend.h"
#include "block/block_int.h"
......@@ -47,6 +49,7 @@ typedef struct img_cmd_t {
enum {
OPTION_OUTPUT = 256,
OPTION_BACKING_CHAIN = 257,
OPTION_OBJECT = 258,
};
typedef enum OutputFormat {
......@@ -94,6 +97,10 @@ static void QEMU_NORETURN help(void)
"\n"
"Command parameters:\n"
" 'filename' is a disk image filename\n"
" 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n"
" manual page for a description of the object properties. The most common\n"
" object type is a 'secret', which is used to supply passwords and/or\n"
" encryption keys.\n"
" 'fmt' is the disk image format. It is guessed automatically in most cases\n"
" 'cache' is the cache mode used to write the output disk image, the valid\n"
" options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n"
......@@ -154,6 +161,15 @@ static void QEMU_NORETURN help(void)
exit(EXIT_SUCCESS);
}
static QemuOptsList qemu_object_opts = {
.name = "object",
.implied_opt_name = "qom-type",
.head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
.desc = {
{ }
},
};
static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...)
{
int ret = 0;
......@@ -275,7 +291,13 @@ static int img_create(int argc, char **argv)
bool quiet = false;
for(;;) {
c = getopt(argc, argv, "F:b:f:he6o:q");
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "F:b:f:he6o:q",
long_options, NULL);
if (c == -1) {
break;
}
......@@ -317,6 +339,14 @@ static int img_create(int argc, char **argv)
case 'q':
quiet = true;
break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
goto fail;
}
} break;
}
}
......@@ -332,6 +362,13 @@ static int img_create(int argc, char **argv)
}
optind++;
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &local_err)) {
error_report_err(local_err);
goto fail;
}
/* Get image size, if specified */
if (optind < argc) {
int64_t sval;
......@@ -489,6 +526,7 @@ static int img_check(int argc, char **argv)
int flags = BDRV_O_FLAGS | BDRV_O_CHECK;
ImageCheck *check;
bool quiet = false;
Error *local_err = NULL;
fmt = NULL;
output = NULL;
......@@ -500,6 +538,7 @@ static int img_check(int argc, char **argv)
{"format", required_argument, 0, 'f'},
{"repair", required_argument, 0, 'r'},
{"output", required_argument, 0, OPTION_OUTPUT},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hf:r:T:q",
......@@ -536,6 +575,14 @@ static int img_check(int argc, char **argv)
case 'q':
quiet = true;
break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
return 1;
}
} break;
}
}
if (optind != argc - 1) {
......@@ -552,6 +599,13 @@ static int img_check(int argc, char **argv)
return 1;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &local_err)) {
error_report_err(local_err);
return 1;
}
ret = bdrv_parse_cache_flags(cache, &flags);
if (ret < 0) {
error_report("Invalid source cache option: %s", cache);
......@@ -675,7 +729,13 @@ static int img_commit(int argc, char **argv)
cache = BDRV_DEFAULT_CACHE;
base = NULL;
for(;;) {
c = getopt(argc, argv, "f:ht:b:dpq");
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:ht:b:dpq",
long_options, NULL);
if (c == -1) {
break;
}
......@@ -704,6 +764,14 @@ static int img_commit(int argc, char **argv)
case 'q':
quiet = true;
break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
return 1;
}
} break;
}
}
......@@ -717,6 +785,13 @@ static int img_commit(int argc, char **argv)
}
filename = argv[optind++];
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &local_err)) {
error_report_err(local_err);
return 1;
}
flags = BDRV_O_RDWR | BDRV_O_UNMAP;
ret = bdrv_parse_cache_flags(cache, &flags);
if (ret < 0) {
......@@ -973,10 +1048,17 @@ static int img_compare(int argc, char **argv)
int64_t nb_sectors;
int c, pnum;
uint64_t progress_base;
Error *local_err = NULL;
cache = BDRV_DEFAULT_CACHE;
for (;;) {
c = getopt(argc, argv, "hf:F:T:pqs");
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hf:F:T:pqs",
long_options, NULL);
if (c == -1) {
break;
}
......@@ -1003,6 +1085,15 @@ static int img_compare(int argc, char **argv)
case 's':
strict = true;
break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
ret = 2;
goto out4;
}
} break;
}
}
......@@ -1018,6 +1109,14 @@ static int img_compare(int argc, char **argv)
filename1 = argv[optind++];
filename2 = argv[optind++];
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &local_err)) {
error_report_err(local_err);
ret = 2;
goto out4;
}
/* Initialize before goto out */
qemu_progress_init(progress, 2.0);
......@@ -1225,6 +1324,7 @@ out2:
blk_unref(blk1);
out3:
qemu_progress_end();
out4:
return ret;
}
......@@ -1555,7 +1655,13 @@ static int img_convert(int argc, char **argv)
compress = 0;
skip_create = 0;
for(;;) {
c = getopt(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn");
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn",
long_options, NULL);
if (c == -1) {
break;
}
......@@ -1646,9 +1752,23 @@ static int img_convert(int argc, char **argv)
case 'n':
skip_create = 1;
break;
case OPTION_OBJECT:
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
goto fail_getopt;
}
break;
}
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &local_err)) {
error_report_err(local_err);
goto fail_getopt;
}
/* Initialize before goto out */
if (quiet) {
progress = 0;
......@@ -2077,6 +2197,7 @@ static int img_info(int argc, char **argv)
bool chain = false;
const char *filename, *fmt, *output;
ImageInfoList *list;
Error *local_err = NULL;
fmt = NULL;
output = NULL;
......@@ -2087,6 +2208,7 @@ static int img_info(int argc, char **argv)
{"format", required_argument, 0, 'f'},
{"output", required_argument, 0, OPTION_OUTPUT},
{"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:h",
......@@ -2108,6 +2230,14 @@ static int img_info(int argc, char **argv)
case OPTION_BACKING_CHAIN:
chain = true;
break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
return 1;
}
} break;
}
}
if (optind != argc - 1) {
......@@ -2124,6 +2254,13 @@ static int img_info(int argc, char **argv)
return 1;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &local_err)) {
error_report_err(local_err);
return 1;
}
list = collect_image_info_list(filename, fmt, chain);
if (!list) {
return 1;
......@@ -2269,6 +2406,7 @@ static int img_map(int argc, char **argv)
int64_t length;
MapEntry curr = { .length = 0 }, next;
int ret = 0;
Error *local_err = NULL;
fmt = NULL;
output = NULL;
......@@ -2278,6 +2416,7 @@ static int img_map(int argc, char **argv)
{"help", no_argument, 0, 'h'},
{"format", required_argument, 0, 'f'},
{"output", required_argument, 0, OPTION_OUTPUT},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:h",
......@@ -2296,6 +2435,14 @@ static int img_map(int argc, char **argv)
case OPTION_OUTPUT:
output = optarg;
break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
return 1;
}
} break;
}
}
if (optind != argc - 1) {
......@@ -2312,6 +2459,13 @@ static int img_map(int argc, char **argv)
return 1;
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &local_err)) {
error_report_err(local_err);
return 1;
}
blk = img_open("image", filename, fmt, BDRV_O_FLAGS, true, false);
if (!blk) {
return 1;
......@@ -2378,7 +2532,13 @@ static int img_snapshot(int argc, char **argv)
bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR;
/* Parse commandline parameters */
for(;;) {
c = getopt(argc, argv, "la:c:d:hq");
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "la:c:d:hq",
long_options, NULL);
if (c == -1) {
break;
}
......@@ -2422,6 +2582,14 @@ static int img_snapshot(int argc, char **argv)
case 'q':
quiet = true;
break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
return 1;
}
} break;
}
}
......@@ -2430,6 +2598,13 @@ static int img_snapshot(int argc, char **argv)
}
filename = argv[optind++];
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &err)) {
error_report_err(err);
return 1;
}
/* Open the image */
blk = img_open("image", filename, NULL, bdrv_oflags, true, quiet);
if (!blk) {
......@@ -2503,7 +2678,13 @@ static int img_rebase(int argc, char **argv)
out_baseimg = NULL;
out_basefmt = NULL;
for(;;) {
c = getopt(argc, argv, "hf:F:b:upt:T:q");
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hf:F:b:upt:T:q",
long_options, NULL);
if (c == -1) {
break;
}
......@@ -2536,6 +2717,14 @@ static int img_rebase(int argc, char **argv)
case 'q':
quiet = true;
break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
return 1;
}
} break;
}
}
......@@ -2551,6 +2740,13 @@ static int img_rebase(int argc, char **argv)
}
filename = argv[optind++];
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &local_err)) {
error_report_err(local_err);
return 1;
}
qemu_progress_init(progress, 2.0);
qemu_progress_print(0, 100);
......@@ -2811,6 +3007,8 @@ static int img_resize(int argc, char **argv)
bool quiet = false;
BlockBackend *blk = NULL;
QemuOpts *param;
Error *local_err = NULL;
static QemuOptsList resize_options = {
.name = "resize_options",
.head = QTAILQ_HEAD_INITIALIZER(resize_options.head),
......@@ -2837,7 +3035,13 @@ static int img_resize(int argc, char **argv)
/* Parse getopt arguments */
fmt = NULL;
for(;;) {
c = getopt(argc, argv, "f:hq");
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:hq",
long_options, NULL);
if (c == -1) {
break;
}
......@@ -2852,6 +3056,14 @@ static int img_resize(int argc, char **argv)
case 'q':
quiet = true;
break;
case OPTION_OBJECT: {
QemuOpts *opts;
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
return 1;
}
} break;
}
}
if (optind != argc - 1) {
......@@ -2859,6 +3071,13 @@ static int img_resize(int argc, char **argv)
}
filename = argv[optind++];
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &local_err)) {
error_report_err(local_err);
return 1;
}
/* Choose grow, shrink, or absolute resize mode */
switch (size[0]) {
case '+':
......@@ -2946,10 +3165,17 @@ static int img_amend(int argc, char **argv)
bool quiet = false, progress = false;
BlockBackend *blk = NULL;
BlockDriverState *bs = NULL;
Error *local_err = NULL;
cache = BDRV_DEFAULT_CACHE;
for (;;) {
c = getopt(argc, argv, "ho:f:t:pq");
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "ho:f:t:pq",
long_options, NULL);
if (c == -1) {
break;
}
......@@ -2985,6 +3211,14 @@ static int img_amend(int argc, char **argv)
case 'q':
quiet = true;
break;
case OPTION_OBJECT:
opts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!opts) {
ret = -1;
goto out_no_progress;
}
break;
}
}
......@@ -2992,6 +3226,14 @@ static int img_amend(int argc, char **argv)
error_exit("Must specify options (-o)");
}
if (qemu_opts_foreach(&qemu_object_opts,
user_creatable_add_opts_foreach,
NULL, &local_err)) {
error_report_err(local_err);
ret = -1;
goto out_no_progress;
}
if (quiet) {
progress = false;
}
......@@ -3115,6 +3357,8 @@ int main(int argc, char **argv)
}
cmdname = argv[1];
qemu_add_opts(&qemu_object_opts);
/* find the command */
for (cmd = img_cmds; cmd->name != NULL; cmd++) {
if (!strcmp(cmdname, cmd->name)) {
......
qemu-img.texi
浏览文件 @ 3babeb15
......@@ -24,6 +24,14 @@ Command parameters:
@table @var
@item filename
is a disk image filename
@item --object @var{objectdef}
is a QEMU user creatable object definition. See the @code{qemu(1)} manual
page for a description of the object properties. The most common object
type is a @code{secret}, which is used to supply passwords and/or encryption
keys.
@item fmt
is the disk image format. It is guessed automatically in most cases. See below
for a description of the supported disk formats.
......
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