Jorge Lucangeli Obes | ad43cc6 | 2012-04-11 16:25:43 -0700 | [diff] [blame] | 1 | // Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "shill/minijail.h" |
| 6 | |
Jorge Lucangeli Obes | ccd5c85 | 2012-12-19 18:08:40 -0800 | [diff] [blame] | 7 | #include <sys/types.h> |
| 8 | #include <sys/wait.h> |
| 9 | |
Jorge Lucangeli Obes | ad43cc6 | 2012-04-11 16:25:43 -0700 | [diff] [blame] | 10 | using std::vector; |
| 11 | |
| 12 | namespace shill { |
| 13 | |
| 14 | static base::LazyInstance<Minijail> g_minijail = LAZY_INSTANCE_INITIALIZER; |
| 15 | |
| 16 | Minijail::Minijail() {} |
| 17 | |
| 18 | Minijail::~Minijail() {} |
| 19 | |
| 20 | // static |
| 21 | Minijail *Minijail::GetInstance() { |
| 22 | return g_minijail.Pointer(); |
| 23 | } |
| 24 | |
| 25 | struct minijail *Minijail::New() { |
| 26 | return minijail_new(); |
| 27 | } |
| 28 | |
| 29 | void Minijail::Destroy(struct minijail *jail) { |
| 30 | minijail_destroy(jail); |
| 31 | } |
| 32 | |
| 33 | bool Minijail::DropRoot(struct minijail *jail, const char *user) { |
| 34 | // |user| is copied so the only reason either of these calls can fail |
| 35 | // is ENOMEM. |
| 36 | return !minijail_change_user(jail, user) && |
| 37 | !minijail_change_group(jail, user); |
| 38 | } |
| 39 | |
| 40 | void Minijail::UseCapabilities(struct minijail *jail, uint64_t capmask) { |
| 41 | minijail_use_caps(jail, capmask); |
| 42 | } |
| 43 | |
| 44 | bool Minijail::Run(struct minijail *jail, |
| 45 | vector<char *> args, pid_t *pid) { |
| 46 | return minijail_run_pid(jail, args[0], args.data(), pid) == 0; |
| 47 | } |
| 48 | |
Jorge Lucangeli Obes | ccd5c85 | 2012-12-19 18:08:40 -0800 | [diff] [blame] | 49 | bool Minijail::RunSync(struct minijail *jail, |
| 50 | vector<char *> args, int *status) { |
| 51 | pid_t pid; |
| 52 | if (Run(jail, args, &pid) && waitpid(pid, status, 0) == pid) { |
| 53 | return true; |
| 54 | } |
| 55 | |
| 56 | return false; |
| 57 | } |
| 58 | |
Jorge Lucangeli Obes | 8c1706f | 2012-08-30 15:30:48 -0700 | [diff] [blame] | 59 | bool Minijail::RunPipe(struct minijail *jail, |
| 60 | vector<char *> args, pid_t *pid, int *stdin) { |
| 61 | return minijail_run_pid_pipe(jail, args[0], args.data(), pid, stdin) == 0; |
| 62 | } |
| 63 | |
Christopher Wiley | 8fa357c | 2013-02-21 11:35:58 -0800 | [diff] [blame] | 64 | bool Minijail::RunPipes(struct minijail *jail, vector<char *> args, pid_t *pid, |
| 65 | int *stdin, int *stdout, int *stderr) { |
| 66 | return minijail_run_pid_pipes(jail, args[0], args.data(), |
| 67 | pid, stdin, stdout, stderr) == 0; |
| 68 | } |
| 69 | |
Jorge Lucangeli Obes | ad43cc6 | 2012-04-11 16:25:43 -0700 | [diff] [blame] | 70 | bool Minijail::RunAndDestroy(struct minijail *jail, |
| 71 | vector<char *> args, pid_t *pid) { |
| 72 | bool res = Run(jail, args, pid); |
| 73 | Destroy(jail); |
| 74 | return res; |
| 75 | } |
| 76 | |
Jorge Lucangeli Obes | ccd5c85 | 2012-12-19 18:08:40 -0800 | [diff] [blame] | 77 | bool Minijail::RunSyncAndDestroy(struct minijail *jail, |
| 78 | vector<char *> args, int *status) { |
| 79 | bool res = RunSync(jail, args, status); |
| 80 | Destroy(jail); |
| 81 | return res; |
| 82 | } |
| 83 | |
Jorge Lucangeli Obes | 8c1706f | 2012-08-30 15:30:48 -0700 | [diff] [blame] | 84 | bool Minijail::RunPipeAndDestroy(struct minijail *jail, |
| 85 | vector<char *> args, pid_t *pid, int *stdin) { |
| 86 | bool res = RunPipe(jail, args, pid, stdin); |
| 87 | Destroy(jail); |
| 88 | return res; |
| 89 | } |
| 90 | |
Christopher Wiley | 8fa357c | 2013-02-21 11:35:58 -0800 | [diff] [blame] | 91 | bool Minijail::RunPipesAndDestroy(struct minijail *jail, |
| 92 | vector<char *> args, pid_t *pid, int *stdin, |
| 93 | int *stdout, int *stderr) { |
| 94 | bool res = RunPipes(jail, args, pid, stdin, stdout, stderr); |
| 95 | Destroy(jail); |
| 96 | return res; |
| 97 | } |
| 98 | |
Jorge Lucangeli Obes | ad43cc6 | 2012-04-11 16:25:43 -0700 | [diff] [blame] | 99 | } // namespace shill |