diff options
Diffstat (limited to 'block/vmdk.c')
| -rw-r--r-- | block/vmdk.c | 59 |
1 files changed, 36 insertions, 23 deletions
diff --git a/block/vmdk.c b/block/vmdk.c index dcee07a308..71c21de77b 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1538,7 +1538,7 @@ static int filename_decompose(const char *filename, char *path, char *prefix, static int vmdk_create(const char *filename, QEMUOptionParameter *options) { int fd, idx = 0; - char desc[BUF_SIZE]; + char *desc = NULL; int64_t total_size = 0, filesize; const char *adapter_type = NULL; const char *backing_file = NULL; @@ -1546,7 +1546,7 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options) int flags = 0; int ret = 0; bool flat, split, compress; - char ext_desc_lines[BUF_SIZE] = ""; + GString *ext_desc_lines; char path[PATH_MAX], prefix[PATH_MAX], postfix[PATH_MAX]; const int64_t split_size = 0x80000000; /* VMDK has constant split size */ const char *desc_extent_line; @@ -1574,8 +1574,11 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options) "ddb.geometry.sectors = \"63\"\n" "ddb.adapterType = \"%s\"\n"; + ext_desc_lines = g_string_new(NULL); + if (filename_decompose(filename, path, prefix, postfix, PATH_MAX)) { - return -EINVAL; + ret = -EINVAL; + goto exit; } /* Read out options */ while (options && options->name) { @@ -1601,7 +1604,8 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options) strcmp(adapter_type, "lsilogic") && strcmp(adapter_type, "legacyESX")) { fprintf(stderr, "VMDK: Unknown adapter type: '%s'.\n", adapter_type); - return -EINVAL; + ret = -EINVAL; + goto exit; } if (strcmp(adapter_type, "ide") != 0) { /* that's the number of heads with which vmware operates when @@ -1617,7 +1621,8 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options) strcmp(fmt, "twoGbMaxExtentFlat") && strcmp(fmt, "streamOptimized")) { fprintf(stderr, "VMDK: Unknown subformat: %s\n", fmt); - return -EINVAL; + ret = -EINVAL; + goto exit; } split = !(strcmp(fmt, "twoGbMaxExtentFlat") && strcmp(fmt, "twoGbMaxExtentSparse")); @@ -1631,18 +1636,20 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options) } if (flat && backing_file) { /* not supporting backing file for flat image */ - return -ENOTSUP; + ret = -ENOTSUP; + goto exit; } if (backing_file) { BlockDriverState *bs = bdrv_new(""); ret = bdrv_open(bs, backing_file, NULL, 0, NULL); if (ret != 0) { bdrv_delete(bs); - return ret; + goto exit; } if (strcmp(bs->drv->format_name, "vmdk")) { bdrv_delete(bs); - return -EINVAL; + ret = -EINVAL; + goto exit; } parent_cid = vmdk_read_cid(bs, 0); bdrv_delete(bs); @@ -1676,25 +1683,27 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options) if (vmdk_create_extent(ext_filename, size, flat, compress, zeroed_grain)) { - return -EINVAL; + ret = -EINVAL; + goto exit; } filesize -= size; /* Format description line */ snprintf(desc_line, sizeof(desc_line), desc_extent_line, size / 512, desc_filename); - pstrcat(ext_desc_lines, sizeof(ext_desc_lines), desc_line); + g_string_append(ext_desc_lines, desc_line); } /* generate descriptor file */ - snprintf(desc, sizeof(desc), desc_template, - (unsigned int)time(NULL), - parent_cid, - fmt, - parent_desc_line, - ext_desc_lines, - (flags & BLOCK_FLAG_COMPAT6 ? 6 : 4), - total_size / (int64_t)(63 * number_heads * 512), number_heads, - adapter_type); + desc = g_strdup_printf(desc_template, + (unsigned int)time(NULL), + parent_cid, + fmt, + parent_desc_line, + ext_desc_lines->str, + (flags & BLOCK_FLAG_COMPAT6 ? 6 : 4), + total_size / (int64_t)(63 * number_heads * 512), + number_heads, + adapter_type); if (split || flat) { fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_LARGEFILE, @@ -1705,21 +1714,25 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options) 0644); } if (fd < 0) { - return -errno; + ret = -errno; + goto exit; } /* the descriptor offset = 0x200 */ if (!split && !flat && 0x200 != lseek(fd, 0x200, SEEK_SET)) { ret = -errno; - goto exit; + goto close_exit; } ret = qemu_write_full(fd, desc, strlen(desc)); if (ret != strlen(desc)) { ret = -errno; - goto exit; + goto close_exit; } ret = 0; -exit: +close_exit: qemu_close(fd); +exit: + g_free(desc); + g_string_free(ext_desc_lines, true); return ret; } |