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Add cimfs differ and snapshotter

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Details about CimFs project are discussed in #8346

Signed-off-by: Amit Barve <ambarve@microsoft.com>
This commit is contained in:
Amit Barve
2023-09-14 16:18:13 -07:00
parent 643fa70a7d
commit daa1ea522b
104 changed files with 3848 additions and 2996 deletions
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10
vendor/github.com/Microsoft/hcsshim/ext4/tar2ext4/tar2ext4.go generated vendored
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@@ -85,7 +85,7 @@ func ConvertTarToExt4(r io.Reader, w io.ReadWriteSeeker, options ...Option) erro
fs := compactext4.NewWriter(w, p.ext4opts...)
for {
hdr, err := t.Next()
if err == io.EOF {
if errors.Is(err, io.EOF) {
break
}
if err != nil {
@@ -301,7 +301,7 @@ func Ext4FileSystemSize(r io.ReadSeeker) (int64, int, error) {
func ConvertAndComputeRootDigest(r io.Reader) (string, error) {
out, err := os.CreateTemp("", "")
if err != nil {
return "", fmt.Errorf("failed to create temporary file: %s", err)
return "", fmt.Errorf("failed to create temporary file: %w", err)
}
defer func() {
_ = os.Remove(out.Name())
@@ -313,16 +313,16 @@ func ConvertAndComputeRootDigest(r io.Reader) (string, error) {
MaximumDiskSize(dmverity.RecommendedVHDSizeGB),
}
if err := ConvertTarToExt4(r, out, options...); err != nil {
return "", fmt.Errorf("failed to convert tar to ext4: %s", err)
return "", fmt.Errorf("failed to convert tar to ext4: %w", err)
}
if _, err := out.Seek(0, io.SeekStart); err != nil {
return "", fmt.Errorf("failed to seek start on temp file when creating merkle tree: %s", err)
return "", fmt.Errorf("failed to seek start on temp file when creating merkle tree: %w", err)
}
tree, err := dmverity.MerkleTree(bufio.NewReaderSize(out, dmverity.MerkleTreeBufioSize))
if err != nil {
return "", fmt.Errorf("failed to create merkle tree: %s", err)
return "", fmt.Errorf("failed to create merkle tree: %w", err)
}
hash := dmverity.RootHash(tree)