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// Copyright (C) 2022 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package main
import (
"context"
"fmt"
"os"
"github.com/datawire/dlib/dgroup"
"github.com/datawire/dlib/dlog"
"github.com/sirupsen/logrus"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfsprogs/btrfsinspect"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfsprogs/btrfsutil"
)
func main() {
ctx := context.Background()
logger := logrus.New()
//logger.SetLevel(logrus.TraceLevel)
ctx = dlog.WithLogger(ctx, dlog.WrapLogrus(logger))
grp := dgroup.NewGroup(ctx, dgroup.GroupConfig{
EnableSignalHandling: true,
})
grp.Go("main", func(ctx context.Context) error {
return Main(ctx, os.Args[1], os.Args[2:]...)
})
if err := grp.Wait(); err != nil {
fmt.Fprintf(os.Stderr, "%v: error: %v\n", os.Args[0], err)
os.Exit(1)
}
}
func Main(ctx context.Context, mountpoint string, imgfilenames ...string) (err error) {
maybeSetErr := func(_err error) {
if _err != nil && err == nil {
err = _err
}
}
fs, err := btrfsutil.Open(os.O_RDONLY, imgfilenames...)
if err != nil {
return err
}
defer func() {
maybeSetErr(fs.Close())
}()
return btrfsinspect.MountRO(ctx, fs, mountpoint)
}
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