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Diffstat (limited to 'tools/qemu/patches/0010-VMDK-open-read-write-for-monolithicFlat-image.patch')
-rw-r--r--tools/qemu/patches/0010-VMDK-open-read-write-for-monolithicFlat-image.patch257
1 files changed, 0 insertions, 257 deletions
diff --git a/tools/qemu/patches/0010-VMDK-open-read-write-for-monolithicFlat-image.patch b/tools/qemu/patches/0010-VMDK-open-read-write-for-monolithicFlat-image.patch
deleted file mode 100644
index b05d0d37d8..0000000000
--- a/tools/qemu/patches/0010-VMDK-open-read-write-for-monolithicFlat-image.patch
+++ /dev/null
@@ -1,257 +0,0 @@
-From e6b783a12f7ff491a1a2147d9fe55b4535aa046e Mon Sep 17 00:00:00 2001
-From: Fam Zheng <famcool@gmail.com>
-Date: Tue, 19 Jul 2011 08:38:22 +0800
-Subject: [PATCH 10/12] VMDK: open/read/write for monolithicFlat image
-
-Parse vmdk decriptor file and open mono flat image.
-Read/write the flat extent.
-
-Signed-off-by: Fam Zheng <famcool@gmail.com>
-Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
-Signed-off-by: Kevin Wolf <kwolf@redhat.com>
----
- block/vmdk.c | 171 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-----
- 1 file changed, 158 insertions(+), 13 deletions(-)
-
---- a/block/vmdk.c
-+++ b/block/vmdk.c
-@@ -65,6 +65,7 @@ typedef struct VmdkExtent {
- bool flat;
- int64_t sectors;
- int64_t end_sector;
-+ int64_t flat_start_offset;
- int64_t l1_table_offset;
- int64_t l1_backup_table_offset;
- uint32_t *l1_table;
-@@ -407,9 +408,10 @@ fail:
- static int vmdk_parent_open(BlockDriverState *bs)
- {
- char *p_name;
-- char desc[DESC_SIZE];
-+ char desc[DESC_SIZE + 1];
- BDRVVmdkState *s = bs->opaque;
-
-+ desc[DESC_SIZE] = '\0';
- if (bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE) != DESC_SIZE) {
- return -1;
- }
-@@ -584,6 +586,144 @@ static int vmdk_open_vmdk4(BlockDriverSt
- return ret;
- }
-
-+/* find an option value out of descriptor file */
-+static int vmdk_parse_description(const char *desc, const char *opt_name,
-+ char *buf, int buf_size)
-+{
-+ char *opt_pos, *opt_end;
-+ const char *end = desc + strlen(desc);
-+
-+ opt_pos = strstr(desc, opt_name);
-+ if (!opt_pos) {
-+ return -1;
-+ }
-+ /* Skip "=\"" following opt_name */
-+ opt_pos += strlen(opt_name) + 2;
-+ if (opt_pos >= end) {
-+ return -1;
-+ }
-+ opt_end = opt_pos;
-+ while (opt_end < end && *opt_end != '"') {
-+ opt_end++;
-+ }
-+ if (opt_end == end || buf_size < opt_end - opt_pos + 1) {
-+ return -1;
-+ }
-+ pstrcpy(buf, opt_end - opt_pos + 1, opt_pos);
-+ return 0;
-+}
-+
-+static int vmdk_parse_extents(const char *desc, BlockDriverState *bs,
-+ const char *desc_file_path)
-+{
-+ int ret;
-+ char access[11];
-+ char type[11];
-+ char fname[512];
-+ const char *p = desc;
-+ int64_t sectors = 0;
-+ int64_t flat_offset;
-+
-+ while (*p) {
-+ /* parse extent line:
-+ * RW [size in sectors] FLAT "file-name.vmdk" OFFSET
-+ * or
-+ * RW [size in sectors] SPARSE "file-name.vmdk"
-+ */
-+ flat_offset = -1;
-+ ret = sscanf(p, "%10s %" SCNd64 " %10s %511s %" SCNd64,
-+ access, &sectors, type, fname, &flat_offset);
-+ if (ret < 4 || strcmp(access, "RW")) {
-+ goto next_line;
-+ } else if (!strcmp(type, "FLAT")) {
-+ if (ret != 5 || flat_offset < 0) {
-+ return -EINVAL;
-+ }
-+ } else if (ret != 4) {
-+ return -EINVAL;
-+ }
-+
-+ /* trim the quotation marks around */
-+ if (fname[0] == '"') {
-+ memmove(fname, fname + 1, strlen(fname));
-+ if (strlen(fname) <= 1 || fname[strlen(fname) - 1] != '"') {
-+ return -EINVAL;
-+ }
-+ fname[strlen(fname) - 1] = '\0';
-+ }
-+ if (sectors <= 0 ||
-+ (strcmp(type, "FLAT") && strcmp(type, "SPARSE")) ||
-+ (strcmp(access, "RW"))) {
-+ goto next_line;
-+ }
-+
-+ /* save to extents array */
-+ if (!strcmp(type, "FLAT")) {
-+ /* FLAT extent */
-+ char extent_path[PATH_MAX];
-+ BlockDriverState *extent_file;
-+ VmdkExtent *extent;
-+
-+ path_combine(extent_path, sizeof(extent_path),
-+ desc_file_path, fname);
-+ ret = bdrv_file_open(&extent_file, extent_path, bs->open_flags);
-+ if (ret) {
-+ return ret;
-+ }
-+ extent = vmdk_add_extent(bs, extent_file, true, sectors,
-+ 0, 0, 0, 0, sectors);
-+ extent->flat_start_offset = flat_offset;
-+ } else {
-+ /* SPARSE extent, not supported for now */
-+ fprintf(stderr,
-+ "VMDK: Not supported extent type \"%s\""".\n", type);
-+ return -ENOTSUP;
-+ }
-+next_line:
-+ /* move to next line */
-+ while (*p && *p != '\n') {
-+ p++;
-+ }
-+ p++;
-+ }
-+ return 0;
-+}
-+
-+static int vmdk_open_desc_file(BlockDriverState *bs, int flags)
-+{
-+ int ret;
-+ char buf[2048];
-+ char ct[128];
-+ BDRVVmdkState *s = bs->opaque;
-+
-+ ret = bdrv_pread(bs->file, 0, buf, sizeof(buf));
-+ if (ret < 0) {
-+ return ret;
-+ }
-+ buf[2047] = '\0';
-+ if (vmdk_parse_description(buf, "createType", ct, sizeof(ct))) {
-+ return -EINVAL;
-+ }
-+ if (strcmp(ct, "monolithicFlat")) {
-+ fprintf(stderr,
-+ "VMDK: Not supported image type \"%s\""".\n", ct);
-+ return -ENOTSUP;
-+ }
-+ s->desc_offset = 0;
-+ ret = vmdk_parse_extents(buf, bs, bs->file->filename);
-+ if (ret) {
-+ return ret;
-+ }
-+
-+ /* try to open parent images, if exist */
-+ if (vmdk_parent_open(bs)) {
-+ qemu_free(s->extents);
-+ return -EINVAL;
-+ }
-+ s->parent_cid = vmdk_read_cid(bs, 1);
-+ return 0;
-+}
-+
- static int vmdk_open(BlockDriverState *bs, int flags)
- {
- uint32_t magic;
-@@ -598,7 +738,7 @@ static int vmdk_open(BlockDriverState *b
- } else if (magic == VMDK4_MAGIC) {
- return vmdk_open_vmdk4(bs, flags);
- } else {
-- return -EINVAL;
-+ return vmdk_open_desc_file(bs, flags);
- }
- }
-
-@@ -679,7 +819,7 @@ static int get_cluster_offset(BlockDrive
- if (m_data)
- m_data->valid = 0;
- if (extent->flat) {
-- *cluster_offset = 0;
-+ *cluster_offset = extent->flat_start_offset;
- return 0;
- }
-
-@@ -832,16 +972,20 @@ static int vmdk_read(BlockDriverState *b
- /* if not allocated, try to read from parent image, if exist */
- if (bs->backing_hd) {
- if (!vmdk_is_cid_valid(bs))
-- return -1;
-+ return -EINVAL;
- ret = bdrv_read(bs->backing_hd, sector_num, buf, n);
- if (ret < 0)
-- return -1;
-+ return ret;
- } else {
- memset(buf, 0, 512 * n);
- }
- } else {
-- if(bdrv_pread(bs->file, cluster_offset + index_in_cluster * 512, buf, n * 512) != n * 512)
-- return -1;
-+ ret = bdrv_pread(extent->file,
-+ cluster_offset + index_in_cluster * 512,
-+ buf, n * 512);
-+ if (ret < 0) {
-+ return ret;
-+ }
- }
- nb_sectors -= n;
- sector_num += n;
-@@ -865,7 +1009,7 @@ static int vmdk_write(BlockDriverState *
- "(VMDK) Wrong offset: sector_num=0x%" PRIx64
- " total_sectors=0x%" PRIx64 "\n",
- sector_num, bs->total_sectors);
-- return -1;
-+ return -EIO;
- }
-
- while (nb_sectors > 0) {
-@@ -888,16 +1032,17 @@ static int vmdk_write(BlockDriverState *
- n = nb_sectors;
- }
-
-- if (bdrv_pwrite(bs->file,
-+ ret = bdrv_pwrite(extent->file,
- cluster_offset + index_in_cluster * 512,
-- buf, n * 512)
-- != n * 512) {
-- return -1;
-+ buf,
-+ n * 512);
-+ if (ret < 0) {
-+ return ret;
- }
- if (m_data.valid) {
- /* update L2 tables */
- if (vmdk_L2update(extent, &m_data) == -1) {
-- return -1;
-+ return -EIO;
- }
- }
- nb_sectors -= n;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 09:34:58 +0000