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//go:build !windows
// +build !windows
package util
// TODO once rootless function is consolidated under libpod, we
// should work to take darwin from this
import (
"errors"
"fmt"
"os"
"path/filepath"
"syscall"
"github.com/containers/podman/v4/pkg/rootless"
"github.com/sirupsen/logrus"
)
// GetRuntimeDir returns the runtime directory
func GetRuntimeDir() (string, error) {
var rootlessRuntimeDirError error
if !rootless.IsRootless() {
return "", nil
}
rootlessRuntimeDirOnce.Do(func() {
runtimeDir := os.Getenv("XDG_RUNTIME_DIR")
uid := fmt.Sprintf("%d", rootless.GetRootlessUID())
if runtimeDir == "" {
tmpDir := filepath.Join("/run", "user", uid)
if err := os.MkdirAll(tmpDir, 0700); err != nil {
logrus.Debug(err)
}
st, err := os.Stat(tmpDir)
if err == nil && int(st.Sys().(*syscall.Stat_t).Uid) == os.Geteuid() && (st.Mode().Perm()&0700 == 0700) {
runtimeDir = tmpDir
}
}
if runtimeDir == "" {
tmpDir := filepath.Join(os.TempDir(), fmt.Sprintf("podman-run-%s", uid))
if err := os.MkdirAll(tmpDir, 0700); err != nil {
logrus.Debug(err)
}
st, err := os.Stat(tmpDir)
if err == nil && int(st.Sys().(*syscall.Stat_t).Uid) == os.Geteuid() && (st.Mode().Perm()&0700 == 0700) {
runtimeDir = tmpDir
}
}
if runtimeDir == "" {
home := os.Getenv("HOME")
if home == "" {
rootlessRuntimeDirError = errors.New("neither XDG_RUNTIME_DIR nor HOME was set non-empty")
return
}
resolvedHome, err := filepath.EvalSymlinks(home)
if err != nil {
rootlessRuntimeDirError = fmt.Errorf("cannot resolve %s: %w", home, err)
return
}
runtimeDir = filepath.Join(resolvedHome, "rundir")
}
rootlessRuntimeDir = runtimeDir
})
if rootlessRuntimeDirError != nil {
return "", rootlessRuntimeDirError
}
return rootlessRuntimeDir, nil
}
// GetRootlessConfigHomeDir returns the config home directory when running as non root
func GetRootlessConfigHomeDir() (string, error) {
var rootlessConfigHomeDirError error
rootlessConfigHomeDirOnce.Do(func() {
cfgHomeDir := os.Getenv("XDG_CONFIG_HOME")
if cfgHomeDir == "" {
home := os.Getenv("HOME")
resolvedHome, err := filepath.EvalSymlinks(home)
if err != nil {
rootlessConfigHomeDirError = fmt.Errorf("cannot resolve %s: %w", home, err)
return
}
tmpDir := filepath.Join(resolvedHome, ".config")
st, err := os.Stat(tmpDir)
if err == nil && int(st.Sys().(*syscall.Stat_t).Uid) == os.Geteuid() && st.Mode().Perm() >= 0700 {
cfgHomeDir = tmpDir
}
}
rootlessConfigHomeDir = cfgHomeDir
})
if rootlessConfigHomeDirError != nil {
return "", rootlessConfigHomeDirError
}
return rootlessConfigHomeDir, nil
}
// GetRootlessPauseProcessPidPath returns the path to the file that holds the pid for
// the pause process.
// DEPRECATED - switch to GetRootlessPauseProcessPidPathGivenDir
func GetRootlessPauseProcessPidPath() (string, error) {
runtimeDir, err := GetRuntimeDir()
if err != nil {
return "", err
}
return filepath.Join(runtimeDir, "libpod", "pause.pid"), nil
}
// GetRootlessPauseProcessPidPathGivenDir returns the path to the file that
// holds the PID of the pause process, given the location of Libpod's temporary
// files.
func GetRootlessPauseProcessPidPathGivenDir(libpodTmpDir string) (string, error) {
if libpodTmpDir == "" {
return "", errors.New("must provide non-empty temporary directory")
}
return filepath.Join(libpodTmpDir, "pause.pid"), nil
}
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