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// Copyright (C) 2022-2023 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package main
import (
"os"
"git.lukeshu.com/go/lowmemjson"
"github.com/datawire/dlib/dlog"
"github.com/datawire/ocibuild/pkg/cliutil"
"github.com/spf13/cobra"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfsutil"
)
func init() {
inspectors.AddCommand(&cobra.Command{
Use: "list-nodes",
Short: "Scan the filesystem for btree nodes",
Long: "" +
"This scans the filesystem sector-by-sector looking for nodes. " +
"If you are needing to rebuild the chunk/dev-extent/blockgroup " +
"trees with `btrfs-rec inspect rebuild-mappings` anyway, you may " +
"want to instead use `btrfs-rec inspect rebuild-mappings list-nodes` " +
"to take advantage of the sector-by-sector scan that's already " +
"performed by `btrfs-rec inspect rebuild-mappings scan`.",
Args: cliutil.WrapPositionalArgs(cobra.ExactArgs(1)),
RunE: runWithRawFS(func(fs *btrfs.FS, cmd *cobra.Command, args []string) error {
ctx := cmd.Context()
nodeList, err := btrfsutil.ListNodes(ctx, fs)
if err != nil {
return err
}
dlog.Infof(ctx, "Writing nodes to stdout...")
if err := writeJSONFile(os.Stdout, nodeList, lowmemjson.ReEncoderConfig{
Indent: "\t",
ForceTrailingNewlines: true,
}); err != nil {
return err
}
dlog.Info(ctx, "... done writing")
return nil
}),
})
}
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