mirror of https://github.com/minio/minio.git
118 lines
3.2 KiB
Go
118 lines
3.2 KiB
Go
// Copyright (c) 2015-2023 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"encoding/binary"
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"errors"
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"flag"
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"fmt"
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"log"
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"os"
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"github.com/olekukonko/tablewriter"
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"github.com/pkg/xattr"
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)
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var (
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path, name string
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value uint64
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set, list bool
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)
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func getxattr(path, name string) (uint64, error) {
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buf, err := xattr.LGet(path, name)
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if err != nil {
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return 0, err
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}
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return binary.LittleEndian.Uint64(buf[:8]), nil
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}
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func listxattr(path string) ([]string, error) {
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return xattr.LList(path)
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}
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func setxattr(path, name string, value uint64) error {
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data := make([]byte, 8)
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binary.LittleEndian.PutUint64(data, value)
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return xattr.LSet(path, name, data)
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}
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func main() {
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flag.StringVar(&path, "path", "", "path name where the attribute shall be applied")
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flag.StringVar(&name, "name", "", "attribute name or it can be a wildcard if '.' is specified")
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flag.Uint64Var(&value, "value", 0, "attribute value expects the value to be uint64")
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flag.BoolVar(&set, "set", false, "this is a set attribute operation")
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flag.Parse()
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if set && value == 0 {
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log.Fatalln("setting an attribute requires a non-zero value")
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}
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if !set && value > 0 {
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log.Fatalln("to set a value please specify --set along with --value")
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}
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table := tablewriter.NewWriter(os.Stdout)
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table.SetHeader([]string{"Name", "Value"})
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table.SetAutoWrapText(false)
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table.SetAutoFormatHeaders(true)
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table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
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table.SetAlignment(tablewriter.ALIGN_LEFT)
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table.SetCenterSeparator("")
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table.SetColumnSeparator("")
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table.SetRowSeparator("")
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table.SetHeaderLine(false)
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// table.EnableBorder(false)
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table.SetTablePadding("\t") // pad with tabs
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table.SetNoWhiteSpace(true)
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if set {
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if err := setxattr(path, name, value); err != nil {
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log.Fatalln(fmt.Errorf("setting attribute %s failed with: %v", name, err))
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}
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} else {
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if name == "" {
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log.Fatalln("you must specify an attribute name for reading")
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}
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var names []string
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if name == "." {
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attrs, err := listxattr(path)
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if err != nil {
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log.Fatalln(fmt.Errorf("listing attributes failed with: %v", err))
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}
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names = append(names, attrs...)
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} else {
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names = append(names, name)
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}
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var data [][]string
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for _, attr := range names {
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value, err := getxattr(path, attr)
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if err != nil {
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data = append(data, []string{attr, errors.Unwrap(err).Error()})
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} else {
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data = append(data, []string{attr, fmt.Sprintf("%d", value)})
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}
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}
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table.AppendBulk(data) // Add Bulk Data
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table.Render()
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}
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}
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