/
accounts_unix.go
70 lines (59 loc) · 1.96 KB
/
accounts_unix.go
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// Copyright 2019 Google LLC
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// https://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build !windows
package main
import (
"context"
"fmt"
"os"
"os/user"
"syscall"
"github.com/GoogleCloudPlatform/guest-agent/google_guest_agent/cfg"
"github.com/GoogleCloudPlatform/guest-agent/google_guest_agent/run"
)
func getUIDAndGID(path string) (string, string) {
if dir, err := os.Stat(path); err == nil {
if stat, ok := dir.Sys().(*syscall.Stat_t); ok {
return fmt.Sprintf("%d", stat.Uid), fmt.Sprintf("%d", stat.Gid)
}
}
return "", ""
}
func createUser(ctx context.Context, username, uid, gid string) error {
config := cfg.Get()
useradd := config.Accounts.UserAddCmd
if uid != "" {
useradd = fmt.Sprintf("%s -u %s", useradd, uid)
}
if gid != "" {
groupadd := config.Accounts.GroupAddCmd
groupadd = fmt.Sprintf("%s -g %s", groupadd, gid)
cmd, args := createUserGroupCmd(groupadd, "", username)
if err := run.Quiet(ctx, cmd, args...); err != nil {
return err
}
useradd = fmt.Sprintf("%s -g %s", useradd, gid)
}
cmd, args := createUserGroupCmd(useradd, username, "")
return run.Quiet(ctx, cmd, args...)
}
func addUserToGroup(ctx context.Context, user, group string) error {
config := cfg.Get()
gpasswdadd := config.Accounts.GPasswdAddCmd
cmd, args := createUserGroupCmd(gpasswdadd, user, group)
return run.Quiet(ctx, cmd, args...)
}
func userExists(name string) (bool, error) {
if _, err := user.Lookup(name); err != nil {
return false, err
}
return true, nil
}