khenaidoo | ffe076b | 2019-01-15 16:08:08 -0500 | [diff] [blame^] | 1 | // Copyright 2015 The etcd Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | // Package osutil implements operating system-related utility functions. |
| 16 | package osutil |
| 17 | |
| 18 | import ( |
| 19 | "os" |
| 20 | "strings" |
| 21 | |
| 22 | "github.com/coreos/pkg/capnslog" |
| 23 | ) |
| 24 | |
| 25 | var ( |
| 26 | plog = capnslog.NewPackageLogger("github.com/coreos/etcd", "pkg/osutil") |
| 27 | |
| 28 | // support to override setting SIG_DFL so tests don't terminate early |
| 29 | setDflSignal = dflSignal |
| 30 | ) |
| 31 | |
| 32 | func Unsetenv(key string) error { |
| 33 | envs := os.Environ() |
| 34 | os.Clearenv() |
| 35 | for _, e := range envs { |
| 36 | strs := strings.SplitN(e, "=", 2) |
| 37 | if strs[0] == key { |
| 38 | continue |
| 39 | } |
| 40 | if err := os.Setenv(strs[0], strs[1]); err != nil { |
| 41 | return err |
| 42 | } |
| 43 | } |
| 44 | return nil |
| 45 | } |