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verify.go
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verify.go
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package image
import (
"errors"
"fmt"
"path"
"github.com/Cloud-Foundations/Dominator/lib/filesystem"
"github.com/Cloud-Foundations/Dominator/lib/objectserver"
)
func (image *Image) verify() error {
computedInodes := make(map[uint64]struct{})
return verifyDirectory(&image.FileSystem.DirectoryInode, computedInodes, "")
}
func verifyDirectory(directoryInode *filesystem.DirectoryInode,
computedInodes map[uint64]struct{}, name string) error {
for _, dirent := range directoryInode.EntryList {
if _, ok := dirent.Inode().(*filesystem.ComputedRegularInode); ok {
if _, ok := computedInodes[dirent.InodeNumber]; ok {
return errors.New("duplicate computed inode: " +
path.Join(name, dirent.Name))
}
computedInodes[dirent.InodeNumber] = struct{}{}
} else if inode, ok := dirent.Inode().(*filesystem.DirectoryInode); ok {
verifyDirectory(inode, computedInodes, path.Join(name, dirent.Name))
}
}
return nil
}
func (image *Image) verifyObjects(checker objectserver.ObjectsChecker) error {
missingObjects, err := image.ListMissingObjects(checker)
if err != nil {
return err
}
switch len(missingObjects) {
case 0:
return nil
case 1:
return fmt.Errorf("object: %x is not available", missingObjects[0])
default:
return fmt.Errorf("%d objects are not available", len(missingObjects))
}
}
func (image *Image) verifyRequiredPaths(requiredPaths map[string]rune) error {
if image.Filter == nil {
return nil
}
fs := image.FileSystem
filenameToInodeTable := fs.FilenameToInodeTable()
for pathName, pathType := range requiredPaths {
inum, ok := filenameToInodeTable[pathName]
if !ok {
return errors.New(
"VerifyRequiredPaths(): missing path: " + pathName)
}
inode := fs.InodeTable[inum]
switch pathType {
case 'b', 'c', 'p':
if _, ok := inode.(*filesystem.SpecialInode); !ok {
return errors.New(
"VerifyRequiredPaths(): path is not a special inode: " +
pathName)
}
case 'd':
if _, ok := inode.(*filesystem.DirectoryInode); !ok {
return errors.New(
"VerifyRequiredPaths(): path is not a directory: " +
pathName)
}
case 'f':
if _, ok := inode.(*filesystem.RegularInode); !ok {
return errors.New(
"VerifyRequiredPaths(): path is not a regular file: " +
pathName)
}
case 'l':
if _, ok := inode.(*filesystem.SymlinkInode); !ok {
return errors.New(
"VerifyRequiredPaths(): path is not a symlink: " +
pathName)
}
}
}
return nil
}