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package main
import (
"fmt"
"os"
"github.com/davecgh/go-spew/spew"
"lukeshu.com/btrfs-tools/pkg/btrfs"
)
func main() {
if err := Main(os.Args[1]); err != nil {
fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
os.Exit(1)
}
}
func Main(imgfilename string) (err error) {
maybeSetErr := func(_err error) {
if _err != nil && err == nil {
err = _err
}
}
fh, err := os.Open(imgfilename)
if err != nil {
return err
}
img := &btrfs.Img{
File: fh,
}
defer func() {
maybeSetErr(img.Close())
}()
superblocks, err := img.Superblocks()
if err != nil {
return err
}
spew := spew.NewDefaultConfig()
spew.DisablePointerAddresses = true
sum, err := superblocks[0].Data.CalculateChecksum()
if err != nil {
return err
}
fmt.Printf("superblock checksum: %x\n", sum)
spew.Dump(superblocks[0].Data)
syschunks, err := superblocks[0].Data.ParseSysChunkArray()
if err != nil {
return err
}
spew.Dump(syschunks)
return nil
}
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