Merge remote branch 'kwolf/for-anthony' into staging

Makefile.objs

@@ -24,6 +24,7 @@ block-nested-y += parallels.o nbd.o blkdebug.o sheepdog.o blkverify.o
 block-nested-$(CONFIG_WIN32) += raw-win32.o
 block-nested-$(CONFIG_POSIX) += raw-posix.o
 block-nested-$(CONFIG_CURL) += curl.o
+block-nested-$(CONFIG_RBD) += rbd.o
 
 block-obj-y +=  $(addprefix block/, $(block-nested-y))
 

block.c

@@ -215,7 +215,7 @@ int bdrv_create_file(const char* filename, QEMUOptionParameter *options)
 
     drv = bdrv_find_protocol(filename);
     if (drv == NULL) {
-        drv = bdrv_find_format("file");
+        return -ENOENT;
     }
 
     return bdrv_create(drv, filename, options);

block/rbd_types.h

+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2010 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.LIB.
+ *
+ */
+
+#ifndef CEPH_RBD_TYPES_H
+#define CEPH_RBD_TYPES_H
+
+
+/*
+ * rbd image 'foo' consists of objects
+ *   foo.rbd      - image metadata
+ *   foo.00000000
+ *   foo.00000001
+ *   ...          - data
+ */
+
+#define RBD_SUFFIX              ".rbd"
+#define RBD_DIRECTORY           "rbd_directory"
+#define RBD_INFO                "rbd_info"
+
+#define RBD_DEFAULT_OBJ_ORDER   22   /* 4MB */
+
+#define RBD_MAX_OBJ_NAME_SIZE   96
+#define RBD_MAX_BLOCK_NAME_SIZE 24
+#define RBD_MAX_SEG_NAME_SIZE   128
+
+#define RBD_COMP_NONE           0
+#define RBD_CRYPT_NONE          0
+
+#define RBD_HEADER_TEXT         "<<< Rados Block Device Image >>>\n"
+#define RBD_HEADER_SIGNATURE    "RBD"
+#define RBD_HEADER_VERSION      "001.005"
+
+struct rbd_info {
+    uint64_t max_id;
+} __attribute__ ((packed));
+
+struct rbd_obj_snap_ondisk {
+    uint64_t id;
+    uint64_t image_size;
+} __attribute__((packed));
+
+struct rbd_obj_header_ondisk {
+    char text[40];
+    char block_name[RBD_MAX_BLOCK_NAME_SIZE];
+    char signature[4];
+    char version[8];
+    struct {
+        uint8_t order;
+        uint8_t crypt_type;
+        uint8_t comp_type;
+        uint8_t unused;
+    } __attribute__((packed)) options;
+    uint64_t image_size;
+    uint64_t snap_seq;
+    uint32_t snap_count;
+    uint32_t reserved;
+    uint64_t snap_names_len;
+    struct rbd_obj_snap_ondisk snaps[0];
+} __attribute__((packed));
+
+
+#endif

block_int.h

@@ -29,7 +29,6 @@
 #include "qemu-queue.h"
 
 #define BLOCK_FLAG_ENCRYPT	1
-#define BLOCK_FLAG_COMPRESS	2
 #define BLOCK_FLAG_COMPAT6	4
 
 #define BLOCK_OPT_SIZE          "size"

configure

@@ -332,6 +332,7 @@ zero_malloc=""
 trace_backend="nop"
 trace_file="trace"
 spice=""
+rbd=""
 
 # OS specific
 if check_define __linux__ ; then
@@ -741,6 +742,10 @@ for opt do
   ;;
   --*dir)
   ;;
+  --disable-rbd) rbd="no"
+  ;;
+  --enable-rbd) rbd="yes"
+  ;;
   *) echo "ERROR: unknown option $opt"; show_help="yes"
   ;;
   esac
@@ -934,6 +939,7 @@ echo "  --trace-file=NAME        Full PATH,NAME of file to store traces"
 echo "                           Default:trace-<pid>"
 echo "  --disable-spice          disable spice"
 echo "  --enable-spice           enable spice"
+echo "  --enable-rbd             enable building the rados block device (rbd)"
 echo ""
 echo "NOTE: The object files are built at the place where configure is launched"
 exit 1
@@ -1745,6 +1751,48 @@ if test "$mingw32" != yes -a "$pthread" = no; then
   exit 1
 fi
 
+##########################################
+# rbd probe
+if test "$rbd" != "no" ; then
+  cat > $TMPC <<EOF
+#include <stdio.h>
+#include <rados/librados.h>
+int main(void) { rados_initialize(0, NULL); return 0; }
+EOF
+  rbd_libs="-lrados -lcrypto"
+  if compile_prog "" "$rbd_libs" ; then
+    librados_too_old=no
+    cat > $TMPC <<EOF
+#include <stdio.h>
+#include <rados/librados.h>
+#ifndef CEPH_OSD_TMAP_SET
+#error missing CEPH_OSD_TMAP_SET
+#endif
+int main(void) {
+    int (*func)(const rados_pool_t pool, uint64_t *snapid) = rados_selfmanaged_snap_create;
+    rados_initialize(0, NULL);
+    return 0;
+}
+EOF
+    if compile_prog "" "$rbd_libs" ; then
+      rbd=yes
+      libs_tools="$rbd_libs $libs_tools"
+      libs_softmmu="$rbd_libs $libs_softmmu"
+    else
+      rbd=no
+      librados_too_old=yes
+    fi
+  else
+    if test "$rbd" = "yes" ; then
+      feature_not_found "rados block device"
+    fi
+    rbd=no
+  fi
+  if test "$librados_too_old" = "yes" ; then
+    echo "-> Your librados version is too old - upgrade needed to have rbd support"
+  fi
+fi
+
 ##########################################
 # linux-aio probe
 
@@ -2354,6 +2402,7 @@ echo "vhost-net support $vhost_net"
 echo "Trace backend     $trace_backend"
 echo "Trace output file $trace_file-<pid>"
 echo "spice support     $spice"
+echo "rbd support       $rbd"
 
 if test $sdl_too_old = "yes"; then
 echo "-> Your SDL version is too old - please upgrade to have SDL support"
@@ -2627,6 +2676,9 @@ echo "CONFIG_UNAME_RELEASE=\"$uname_release\"" >> $config_host_mak
 if test "$zero_malloc" = "yes" ; then
   echo "CONFIG_ZERO_MALLOC=y" >> $config_host_mak
 fi
+if test "$rbd" = "yes" ; then
+  echo "CONFIG_RBD=y" >> $config_host_mak
+fi
 
 # USB host support
 case "$usb" in

qemu-img.c

@@ -188,6 +188,33 @@ static int read_password(char *buf, int buf_size)
 }
 #endif
 
+static int print_block_option_help(const char *filename, const char *fmt)
+{
+    BlockDriver *drv, *proto_drv;
+    QEMUOptionParameter *create_options = NULL;
+
+    /* Find driver and parse its options */
+    drv = bdrv_find_format(fmt);
+    if (!drv) {
+        error("Unknown file format '%s'", fmt);
+        return 1;
+    }
+
+    proto_drv = bdrv_find_protocol(filename);
+    if (!proto_drv) {
+        error("Unknown protocol '%s'", filename);
+        return 1;
+    }
+
+    create_options = append_option_parameters(create_options,
+                                              drv->create_options);
+    create_options = append_option_parameters(create_options,
+                                              proto_drv->create_options);
+    print_option_help(create_options);
+    free_option_parameters(create_options);
+    return 0;
+}
+
 static BlockDriverState *bdrv_new_open(const char *filename,
                                        const char *fmt,
                                        int flags)
@@ -234,21 +261,9 @@ fail:
 }
 
 static int add_old_style_options(const char *fmt, QEMUOptionParameter *list,
-    int flags, const char *base_filename, const char *base_fmt)
+                                 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);
-            return -1;
-        }
-    }
-    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);
-            return -1;
-        }
-    }
-
     if (base_filename) {
         if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) {
             error("Backing file not supported for file format '%s'", fmt);
@@ -266,21 +281,23 @@ static int add_old_style_options(const char *fmt, QEMUOptionParameter *list,
 
 static int img_create(int argc, char **argv)
 {
-    int c, ret = 0, flags;
+    int c, ret = 0;
     const char *fmt = "raw";
     const char *base_fmt = NULL;
     const char *filename;
     const char *base_filename = NULL;
     BlockDriver *drv, *proto_drv;
     QEMUOptionParameter *param = NULL, *create_options = NULL;
+    QEMUOptionParameter *backing_fmt = NULL;
     char *options = NULL;
 
-    flags = 0;
     for(;;) {
         c = getopt(argc, argv, "F:b:f:he6o:");
-        if (c == -1)
+        if (c == -1) {
             break;
+        }
         switch(c) {
+        case '?':
         case 'h':
             help();
             break;
@@ -294,11 +311,13 @@ static int img_create(int argc, char **argv)
             fmt = optarg;
             break;
         case 'e':
-            flags |= BLOCK_FLAG_ENCRYPT;
-            break;
+            error("qemu-img: option -e is deprecated, please use \'-o "
+                  "encryption\' instead!");
+            return 1;
         case '6':
-            flags |= BLOCK_FLAG_COMPAT6;
-            break;
+            error("qemu-img: option -6 is deprecated, please use \'-o "
+                  "compat6\' instead!");
+            return 1;
         case 'o':
             options = optarg;
             break;
@@ -306,21 +325,29 @@ static int img_create(int argc, char **argv)
     }
 
     /* Get the filename */
-    if (optind >= argc)
+    if (optind >= argc) {
         help();
+    }
     filename = argv[optind++];
 
+    if (options && !strcmp(options, "?")) {
+        ret = print_block_option_help(filename, fmt);
+        goto out;
+    }
+
     /* Find driver and parse its options */
     drv = bdrv_find_format(fmt);
     if (!drv) {
         error("Unknown file format '%s'", fmt);
-        return 1;
+        ret = -1;
+        goto out;
     }
 
     proto_drv = bdrv_find_protocol(filename);
     if (!proto_drv) {
         error("Unknown protocol '%s'", filename);
-        return 1;
+        ret = -1;
+        goto out;
     }
 
     create_options = append_option_parameters(create_options,
@@ -328,11 +355,6 @@ static int img_create(int argc, char **argv)
     create_options = append_option_parameters(create_options,
                                               proto_drv->create_options);
 
-    if (options && !strcmp(options, "?")) {
-        print_option_help(create_options);
-        goto out;
-    }
-
     /* Create parameter list with default values */
     param = parse_option_parameters("", create_options, param);
     set_option_parameter_int(param, BLOCK_OPT_SIZE, -1);
@@ -353,19 +375,27 @@ static int img_create(int argc, char **argv)
     }
 
     /* Add old-style options to parameters */
-    ret = add_old_style_options(fmt, param, flags, base_filename, base_fmt);
+    ret = add_old_style_options(fmt, param, base_filename, base_fmt);
     if (ret < 0) {
         goto out;
     }
 
+    backing_fmt = get_option_parameter(param, BLOCK_OPT_BACKING_FMT);
+    if (backing_fmt && backing_fmt->value.s) {
+        if (!bdrv_find_format(backing_fmt->value.s)) {
+            error("Unknown backing file format '%s'",
+                  backing_fmt->value.s);
+            ret = -1;
+            goto out;
+        }
+    }
+
     // 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 == -1) {
 
         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;
@@ -374,14 +404,7 @@ static int img_create(int argc, char **argv)
             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);
-                     ret = -1;
-                     goto out;
-                }
+                fmt = backing_fmt->value.s;
             }
 
             bs = bdrv_new_open(backing_file->value.s, fmt, BDRV_O_FLAGS);
@@ -407,8 +430,6 @@ static int img_create(int argc, char **argv)
     puts("");
 
     ret = bdrv_create(drv, filename, param);
-    free_option_parameters(create_options);
-    free_option_parameters(param);
 
     if (ret < 0) {
         if (ret == -ENOTSUP) {
@@ -420,6 +441,8 @@ static int img_create(int argc, char **argv)
         }
     }
 out:
+    free_option_parameters(create_options);
+    free_option_parameters(param);
     if (ret) {
         return 1;
     }
@@ -444,9 +467,11 @@ static int img_check(int argc, char **argv)
     fmt = NULL;
     for(;;) {
         c = getopt(argc, argv, "f:h");
-        if (c == -1)
+        if (c == -1) {
             break;
+        }
         switch(c) {
+        case '?':
         case 'h':
             help();
             break;
@@ -455,8 +480,9 @@ static int img_check(int argc, char **argv)
             break;
         }
     }
-    if (optind >= argc)
+    if (optind >= argc) {
         help();
+    }
     filename = argv[optind++];
 
     bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS);
@@ -520,9 +546,11 @@ static int img_commit(int argc, char **argv)
     fmt = NULL;
     for(;;) {
         c = getopt(argc, argv, "f:h");
-        if (c == -1)
+        if (c == -1) {
             break;
+        }
         switch(c) {
+        case '?':
         case 'h':
             help();
             break;
@@ -531,8 +559,9 @@ static int img_commit(int argc, char **argv)
             break;
         }
     }
-    if (optind >= argc)
+    if (optind >= argc) {
         help();
+    }
     filename = argv[optind++];
 
     bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR);
@@ -636,7 +665,7 @@ static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n,
 
 static int img_convert(int argc, char **argv)
 {
-    int c, ret = 0, n, n1, bs_n, bs_i, flags, cluster_size, cluster_sectors;
+    int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, cluster_sectors;
     const char *fmt, *out_fmt, *out_baseimg, *out_filename;
     BlockDriver *drv, *proto_drv;
     BlockDriverState **bs = NULL, *out_bs = NULL;
@@ -653,12 +682,14 @@ static int img_convert(int argc, char **argv)
     fmt = NULL;
     out_fmt = "raw";
     out_baseimg = NULL;
-    flags = 0;
+    compress = 0;
     for(;;) {
         c = getopt(argc, argv, "f:O:B:s:hce6o:");
-        if (c == -1)
+        if (c == -1) {
             break;
+        }
         switch(c) {
+        case '?':
         case 'h':
             help();
             break;
@@ -672,14 +703,16 @@ static int img_convert(int argc, char **argv)
             out_baseimg = optarg;
             break;
         case 'c':
-            flags |= BLOCK_FLAG_COMPRESS;
+            compress = 1;
             break;
         case 'e':
-            flags |= BLOCK_FLAG_ENCRYPT;
-            break;
+            error("qemu-img: option -e is deprecated, please use \'-o "
+                  "encryption\' instead!");
+            return 1;
         case '6':
-            flags |= BLOCK_FLAG_COMPAT6;
-            break;
+            error("qemu-img: option -6 is deprecated, please use \'-o "
+                  "compat6\' instead!");
+            return 1;
         case 'o':
             options = optarg;
             break;
@@ -690,20 +723,24 @@ static int img_convert(int argc, char **argv)
     }
 
     bs_n = argc - optind - 1;
-    if (bs_n < 1) help();
+    if (bs_n < 1) {
+        help();
+    }
 
     out_filename = argv[argc - 1];
 
+    if (options && !strcmp(options, "?")) {
+        ret = print_block_option_help(out_filename, out_fmt);
+        goto out;
+    }
+
     if (bs_n > 1 && out_baseimg) {
         error("-B makes no sense when concatenating multiple input images");
-        return 1;
+        ret = -1;
+        goto out;
     }
         
-    bs = calloc(bs_n, sizeof(BlockDriverState *));
-    if (!bs) {
-        error("Out of memory");
-        return 1;
-    }
+    bs = qemu_mallocz(bs_n * sizeof(BlockDriverState *));
 
     total_sectors = 0;
     for (bs_i = 0; bs_i < bs_n; bs_i++) {
@@ -749,10 +786,6 @@ static int img_convert(int argc, char **argv)
                                               drv->create_options);
     create_options = append_option_parameters(create_options,
                                               proto_drv->create_options);
-    if (options && !strcmp(options, "?")) {
-        print_option_help(create_options);
-        goto out;
-    }
 
     if (options) {
         param = parse_option_parameters(options, create_options, param);
@@ -766,7 +799,7 @@ static int img_convert(int argc, char **argv)
     }
 
     set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512);
-    ret = add_old_style_options(out_fmt, param, flags, out_baseimg, NULL);
+    ret = add_old_style_options(out_fmt, param, out_baseimg, NULL);
     if (ret < 0) {
         goto out;
     }
@@ -778,7 +811,7 @@ static int img_convert(int argc, char **argv)
     }
 
     /* Check if compression is supported */
-    if (flags & BLOCK_FLAG_COMPRESS) {
+    if (compress) {
         QEMUOptionParameter *encryption =
             get_option_parameter(param, BLOCK_OPT_ENCRYPT);
 
@@ -820,7 +853,7 @@ static int img_convert(int argc, char **argv)
     bdrv_get_geometry(bs[0], &bs_sectors);
     buf = qemu_malloc(IO_BUF_SIZE);
 
-    if (flags & BLOCK_FLAG_COMPRESS) {
+    if (compress) {
         ret = bdrv_get_info(out_bs, &bdi);
         if (ret < 0) {
             error("could not get block driver info");
@@ -880,8 +913,9 @@ static int img_convert(int argc, char **argv)
             }
             assert (remainder == 0);
 
-            if (n < cluster_sectors)
+            if (n < cluster_sectors) {
                 memset(buf + n * 512, 0, cluster_size - n * 512);
+            }
             if (is_not_zero(buf, cluster_size)) {
                 ret = bdrv_write_compressed(out_bs, sector_num, buf,
                                             cluster_sectors);
@@ -901,12 +935,14 @@ static int img_convert(int argc, char **argv)
         sector_num = 0; // total number of sectors converted so far
         for(;;) {
             nb_sectors = total_sectors - sector_num;
-            if (nb_sectors <= 0)
+            if (nb_sectors <= 0) {
                 break;
-            if (nb_sectors >= (IO_BUF_SIZE / 512))
+            }
+            if (nb_sectors >= (IO_BUF_SIZE / 512)) {
                 n = (IO_BUF_SIZE / 512);
-            else
+            } else {
                 n = nb_sectors;
+            }
 
             while (sector_num - bs_offset >= bs_sectors) {
                 bs_i ++;
@@ -918,8 +954,9 @@ static int img_convert(int argc, char **argv)
                    sector_num, bs_i, bs_offset, bs_sectors); */
             }
 
-            if (n > bs_offset + bs_sectors - sector_num)
+            if (n > bs_offset + bs_sectors - sector_num) {
                 n = bs_offset + bs_sectors - sector_num;
+            }
 
             if (has_zero_init) {
                 /* If the output image is being created as a copy on write image,
@@ -978,12 +1015,14 @@ out:
     if (out_bs) {
         bdrv_delete(out_bs);
     }
-    for (bs_i = 0; bs_i < bs_n; bs_i++) {
-        if (bs[bs_i]) {
-            bdrv_delete(bs[bs_i]);
+    if (bs) {
+        for (bs_i = 0; bs_i < bs_n; bs_i++) {
+            if (bs[bs_i]) {
+                bdrv_delete(bs[bs_i]);
+            }
         }
+        qemu_free(bs);
     }
-    free(bs);
     if (ret) {
         return 1;
     }
@@ -1053,9 +1092,11 @@ static int img_info(int argc, char **argv)
     fmt = NULL;
     for(;;) {
         c = getopt(argc, argv, "f:h");
-        if (c == -1)
+        if (c == -1) {
             break;
+        }
         switch(c) {
+        case '?':
         case 'h':
             help();
             break;
@@ -1064,8 +1105,9 @@ static int img_info(int argc, char **argv)
             break;
         }
     }
-    if (optind >= argc)
+    if (optind >= argc) {
         help();
+    }
     filename = argv[optind++];
 
     bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING);
@@ -1076,11 +1118,12 @@ static int img_info(int argc, char **argv)
     bdrv_get_geometry(bs, &total_sectors);
     get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512);
     allocated_size = get_allocated_file_size(filename);
-    if (allocated_size < 0)
+    if (allocated_size < 0) {
         snprintf(dsize_buf, sizeof(dsize_buf), "unavailable");
-    else
+    } else {
         get_human_readable_size(dsize_buf, sizeof(dsize_buf),
                                 allocated_size);
+    }
     printf("image: %s\n"
            "file format: %s\n"
            "virtual size: %s (%" PRId64 " bytes)\n"
@@ -1088,11 +1131,13 @@ static int img_info(int argc, char **argv)
            filename, fmt_name, size_buf,
            (total_sectors * 512),
            dsize_buf);
-    if (bdrv_is_encrypted(bs))
+    if (bdrv_is_encrypted(bs)) {
         printf("encrypted: yes\n");
+    }
     if (bdrv_get_info(bs, &bdi) >= 0) {
-        if (bdi.cluster_size != 0)
+        if (bdi.cluster_size != 0) {
             printf("cluster_size: %d\n", bdi.cluster_size);
+        }
     }
     bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename));
     if (backing_filename[0] != '\0') {
@@ -1125,9 +1170,11 @@ static int img_snapshot(int argc, char **argv)
     /* Parse commandline parameters */
     for(;;) {
         c = getopt(argc, argv, "la:c:d:h");
-        if (c == -1)
+        if (c == -1) {
             break;
+        }
         switch(c) {
+        case '?':
         case 'h':
             help();
             return 0;
@@ -1166,8 +1213,9 @@ static int img_snapshot(int argc, char **argv)
         }
     }
 
-    if (optind >= argc)
+    if (optind >= argc) {
         help();
+    }
     filename = argv[optind++];
 
     /* Open the image */
@@ -1191,23 +1239,26 @@ static int img_snapshot(int argc, char **argv)
         sn.date_nsec = tv.tv_usec * 1000;
 
         ret = bdrv_snapshot_create(bs, &sn);
-        if (ret)
+        if (ret) {
             error("Could not create snapshot '%s': %d (%s)",
                 snapshot_name, ret, strerror(-ret));
+        }
         break;
 
     case SNAPSHOT_APPLY:
         ret = bdrv_snapshot_goto(bs, snapshot_name);
-        if (ret)
+        if (ret) {
             error("Could not apply snapshot '%s': %d (%s)",
                 snapshot_name, ret, strerror(-ret));
+        }
         break;
 
     case SNAPSHOT_DELETE:
         ret = bdrv_snapshot_delete(bs, snapshot_name);
-        if (ret)
+        if (ret) {
             error("Could not delete snapshot '%s': %d (%s)",
                 snapshot_name, ret, strerror(-ret));
+        }
         break;
     }
 
@@ -1235,9 +1286,11 @@ static int img_rebase(int argc, char **argv)
 
     for(;;) {
         c = getopt(argc, argv, "uhf:F:b:");
-        if (c == -1)
+        if (c == -1) {
             break;
+        }
         switch(c) {
+        case '?':
         case 'h':
             help();
             return 0;
@@ -1256,8 +1309,9 @@ static int img_rebase(int argc, char **argv)
         }
     }
 
-    if ((optind >= argc) || !out_baseimg)
+    if ((optind >= argc) || !out_baseimg) {
         help();
+    }
     filename = argv[optind++];
 
     /*
@@ -1433,7 +1487,7 @@ static int img_resize(int argc, char **argv)
     int c, ret, relative;
     const char *filename, *fmt, *size;
     int64_t n, total_size;
-    BlockDriverState *bs;
+    BlockDriverState *bs = NULL;
     QEMUOptionParameter *param;
     QEMUOptionParameter resize_options[] = {
         {
@@ -1451,6 +1505,7 @@ static int img_resize(int argc, char **argv)
             break;
         }
         switch(c) {
+        case '?':
         case 'h':
             help();
             break;
@@ -1484,14 +1539,16 @@ static int img_resize(int argc, char **argv)
     param = parse_option_parameters("", resize_options, NULL);
     if (set_option_parameter(param, BLOCK_OPT_SIZE, size)) {
         /* Error message already printed when size parsing fails */
-        exit(1);
+        ret = -1;
+        goto out;
     }
     n = get_option_parameter(param, BLOCK_OPT_SIZE)->value.n;
     free_option_parameters(param);
 
     bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR);
     if (!bs) {
-        return 1;
+        ret = -1;
+        goto out;
     }
 
     if (relative) {
@@ -1521,7 +1578,9 @@ static int img_resize(int argc, char **argv)
         break;
     }
 out:
-    bdrv_delete(bs);
+    if (bs) {
+        bdrv_delete(bs);
+    }
     if (ret) {
         return 1;
     }

qemu-malloc.c

@@ -64,10 +64,13 @@ void *qemu_realloc(void *ptr, size_t size)
 
 void *qemu_mallocz(size_t size)
 {
+    void *ptr;
     if (!size && !allow_zero_malloc()) {
         abort();
     }
-    return qemu_oom_check(calloc(1, size ? size : 1));
+    ptr = qemu_oom_check(calloc(1, size ? size : 1));
+    trace_qemu_malloc(size, ptr);
+    return ptr;
 }
 
 char *qemu_strdup(const char *str)

qemu-option.c

@@ -394,8 +394,8 @@ QEMUOptionParameter *append_option_parameters(QEMUOptionParameter *dest,
 /*
  * Parses a parameter string (param) into an option list (dest).
  *
- * list is the templace is. If dest is NULL, a new copy of list is created for
- * it. If list is NULL, this function fails.
+ * list is the template option list. If dest is NULL, a new copy of list is
+ * created. If list is NULL, this function fails.
  *
  * A parameter string consists of one or more parameters, separated by commas.
  * Each parameter consists of its name and possibly of a value. In the latter
@@ -416,20 +416,13 @@ QEMUOptionParameter *parse_option_parameters(const char *param,
     char value[256];
     char *param_delim, *value_delim;
     char next_delim;
-    size_t num_options;
 
     if (list == NULL) {
         return NULL;
     }
 
     if (dest == NULL) {
-        // Count valid options
-        num_options = count_option_parameters(list);
-
-        // Create a copy of the option list to fill in values
-        dest = qemu_mallocz((num_options + 1) * sizeof(QEMUOptionParameter));
-        allocated = dest;
-        memcpy(dest, list, (num_options + 1) * sizeof(QEMUOptionParameter));
+        dest = allocated = append_option_parameters(NULL, list);
     }
 
     while (*param) {