fvm/container/sparse.cpp

7 #include "fvm/container.h"
101         if (read(fd_.get(), &image_, sizeof(fvm::sparse_image_t)) != sizeof(fvm::sparse_image_t)) {
106         if (image_.flags & fvm::kSparseFlagLz4) {
115             if (read(fd_.get(), &partitions_[i].descriptor, sizeof(fvm::partition_descriptor_t)) !=
116                     sizeof(fvm::partition_descriptor_t)) {
122                 fvm::extent_descriptor_t extent;
124                 if (read(fd_.get(), &partitions_[i].extents[j], sizeof(fvm::extent_descriptor_t)) !=
125                         sizeof(fvm::extent_descriptor_t)) {
140     image_.magic = fvm::kSparseFormatMagic;
141     image_.version = fvm::kSparseFormatVersion;
144     image_.header_length = sizeof(fvm::sparse_image_t);
159     if (image_.magic != fvm::kSparseFormatMagic) {
216         fprintf(stderr, "Failed to truncate fvm container");
228     header_length += sizeof(fvm::sparse_image_t);
229     if (write(fd_.get(), &image_, sizeof(fvm::sparse_image_t)) != sizeof(fvm::sparse_image_t)) {
235         fvm::partition_descriptor_t partition = partitions_[i].descriptor;
237         header_length += sizeof(fvm::partition_descriptor_t);
238         if (write(fd_.get(), &partition, sizeof(fvm::partition_descriptor_t))
239             != sizeof(fvm::partition_descriptor_t)) {
245             fvm::extent_descriptor_t extent = partitions_[i].extents[j];
246             header_length += sizeof(fvm::extent_descriptor_t);
247             if (write(fd_.get(), &extent, sizeof(fvm::extent_descriptor_t))
248                 != sizeof(fvm::extent_descriptor_t)) {
267         fvm::partition_descriptor_t partition = partitions_[i].descriptor;
331     partition.descriptor.magic = fvm::kPartitionDescriptorMagic;
336     image_.header_length += sizeof(fvm::partition_descriptor_t);
379     fvm::extent_descriptor_t extent;
380     extent.magic = fvm::kExtentDescriptorMagic;
391     image_.header_length += sizeof(fvm::extent_descriptor_t);
398     if ((flags_ & fvm::kSparseFlagLz4) == 0) {
406     if ((flags_ & fvm::kSparseFlagLz4) != 0) {
416     if ((flags_ & fvm::kSparseFlagLz4) == 0) {