Add missing long options and --help output.

Also add -s short option for --size (and remove OPTION_SIZE).

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
---
 qemu-img.c | 53 ++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 40 insertions(+), 13 deletions(-)

diff --git a/qemu-img.c b/qemu-img.c
index af7841573c..d72e1f565b 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -71,7 +71,6 @@ enum {
     OPTION_FLUSH_INTERVAL = 261,
     OPTION_NO_DRAIN = 262,
     OPTION_TARGET_IMAGE_OPTS = 263,
-    OPTION_SIZE = 264,
     OPTION_PREALLOCATION = 265,
     OPTION_SHRINK = 266,
     OPTION_SALVAGE = 267,
@@ -5744,15 +5743,6 @@ static void dump_json_block_measure_info(BlockMeasureInfo *info)
 
 static int img_measure(const img_cmd_t *ccmd, int argc, char **argv)
 {
-    static const struct option long_options[] = {
-        {"help", no_argument, 0, 'h'},
-        {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
-        {"object", required_argument, 0, OPTION_OBJECT},
-        {"output", required_argument, 0, OPTION_OUTPUT},
-        {"size", required_argument, 0, OPTION_SIZE},
-        {"force-share", no_argument, 0, 'U'},
-        {0, 0, 0, 0}
-    };
     OutputFormat output_format = OFORMAT_HUMAN;
     BlockBackend *in_blk = NULL;
     BlockDriver *drv;
@@ -5773,12 +5763,47 @@ static int img_measure(const img_cmd_t *ccmd, int argc, char **argv)
     int ret = 1;
     int c;
 
+    static const struct option long_options[] = {
+        {"help", no_argument, 0, 'h'},
+        {"target-format", required_argument, 0, 'O'},
+        {"format", required_argument, 0, 'f'},
+        {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
+        {"options", required_argument, 0, 'o'},
+        {"snapshot", required_argument, 0, 'l'},
+        {"object", required_argument, 0, OPTION_OBJECT},
+        {"output", required_argument, 0, OPTION_OUTPUT},
+        {"size", required_argument, 0, 's'},
+        {"force-share", no_argument, 0, 'U'},
+        {0, 0, 0, 0}
+    };
+
     while ((c = getopt_long(argc, argv, "hf:O:o:l:U",
                             long_options, NULL)) != -1) {
         switch (c) {
-        case '?':
         case 'h':
-            help();
+            cmd_help(ccmd,
+"[-f FMT|--image-opts] [-o OPTIONS] [-O OUTPUT_FMT]\n"
+"       [--output OFMT] [--object OBJDEF] [-l SNAPSHOT_PARAM]\n"
+"       (--size SIZE | FILENAME)\n"
+,
+"  -O, --target-format FMT\n"
+"     desired target/output image format (default raw)\n"
+"  -s, --size SIZE\n"
+"     measure file size for given image size\n"
+"  FILENAME\n"
+"     measure file size required to convert from FILENAME\n"
+"  -f, --format\n"
+"     specify format of FILENAME explicitly\n"
+"  --image-opts\n"
+"     indicates that FILENAME is a complete image specification\n"
+"     instead of a file name (incompatible with --format)\n"
+"  -l, --snapshot SNAPSHOT\n"
+"     use this snapshot in FILENAME as source\n"
+"  --output human|json\n"
+"     output format\n"
+"  -U, --force-share\n"
+"     open images in shared mode for concurrent access\n"
+);
             break;
         case 'f':
             fmt = optarg;
@@ -5816,12 +5841,14 @@ static int img_measure(const img_cmd_t *ccmd, int argc, char **argv)
         case OPTION_OUTPUT:
             output_format = parse_output_format(argv[0], optarg);
             break;
-        case OPTION_SIZE:
+        case 's':
             img_size = cvtnum("image size", optarg);
             if (img_size < 0) {
                 goto out;
             }
             break;
+        default:
+            tryhelp(argv[0]);
         }
     }
 
-- 
2.39.2