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94 lines
2.6 KiB
Go
94 lines
2.6 KiB
Go
package homedir // import "github.com/docker/docker/pkg/homedir"
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import (
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"errors"
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"os"
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"path/filepath"
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"strings"
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)
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// GetRuntimeDir returns XDG_RUNTIME_DIR.
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// XDG_RUNTIME_DIR is typically configured via pam_systemd.
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// GetRuntimeDir returns non-nil error if XDG_RUNTIME_DIR is not set.
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//
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// See also https://standards.freedesktop.org/basedir-spec/latest/ar01s03.html
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func GetRuntimeDir() (string, error) {
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if xdgRuntimeDir := os.Getenv("XDG_RUNTIME_DIR"); xdgRuntimeDir != "" {
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return xdgRuntimeDir, nil
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}
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return "", errors.New("could not get XDG_RUNTIME_DIR")
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}
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// StickRuntimeDirContents sets the sticky bit on files that are under
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// XDG_RUNTIME_DIR, so that the files won't be periodically removed by the system.
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//
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// StickyRuntimeDir returns slice of sticked files.
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// StickyRuntimeDir returns nil error if XDG_RUNTIME_DIR is not set.
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//
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// See also https://standards.freedesktop.org/basedir-spec/latest/ar01s03.html
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func StickRuntimeDirContents(files []string) ([]string, error) {
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runtimeDir, err := GetRuntimeDir()
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if err != nil {
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// ignore error if runtimeDir is empty
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return nil, nil
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}
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runtimeDir, err = filepath.Abs(runtimeDir)
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if err != nil {
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return nil, err
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}
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var sticked []string
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for _, f := range files {
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f, err = filepath.Abs(f)
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if err != nil {
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return sticked, err
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}
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if strings.HasPrefix(f, runtimeDir+"/") {
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if err = stick(f); err != nil {
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return sticked, err
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}
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sticked = append(sticked, f)
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}
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}
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return sticked, nil
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}
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func stick(f string) error {
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st, err := os.Stat(f)
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if err != nil {
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return err
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}
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m := st.Mode()
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m |= os.ModeSticky
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return os.Chmod(f, m)
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}
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// GetDataHome returns XDG_DATA_HOME.
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// GetDataHome returns $HOME/.local/share and nil error if XDG_DATA_HOME is not set.
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//
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// See also https://standards.freedesktop.org/basedir-spec/latest/ar01s03.html
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func GetDataHome() (string, error) {
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if xdgDataHome := os.Getenv("XDG_DATA_HOME"); xdgDataHome != "" {
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return xdgDataHome, nil
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}
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home := os.Getenv("HOME")
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if home == "" {
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return "", errors.New("could not get either XDG_DATA_HOME or HOME")
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}
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return filepath.Join(home, ".local", "share"), nil
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}
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// GetConfigHome returns XDG_CONFIG_HOME.
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// GetConfigHome returns $HOME/.config and nil error if XDG_CONFIG_HOME is not set.
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//
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// See also https://standards.freedesktop.org/basedir-spec/latest/ar01s03.html
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func GetConfigHome() (string, error) {
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if xdgConfigHome := os.Getenv("XDG_CONFIG_HOME"); xdgConfigHome != "" {
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return xdgConfigHome, nil
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}
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home := os.Getenv("HOME")
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if home == "" {
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return "", errors.New("could not get either XDG_CONFIG_HOME or HOME")
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}
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return filepath.Join(home, ".config"), nil
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}
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