Merge sd_daemon/lsb into sd_daemon. BREAKING CHANGE.v0.3.0

1 files changed, 90 insertions, 0 deletions

diff --git a/sd_daemon/exit-status.go b/sd_daemon/exit-status.go
new file mode 100644
index 0000000..47c5745
--- /dev/null
+++ b/sd_daemon/exit-status.go
@@ -0,0 +1,90 @@
+// Copyright 2015-2016 Luke Shumaker
+//
+// 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
+//
+//     http://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.
+
+package sd_daemon
+
+import (
+	"fmt"
+	"os"
+)
+
+// systemd daemon(7) recommends using the exit codes defined in the
+// "LSB recomendations for SysV init scripts"[1].
+//
+// [1]: http://refspecs.linuxbase.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
+const (
+	EXIT_SUCCESS         uint8 = 0
+	EXIT_FAILURE         uint8 = 1
+	EXIT_INVALIDARGUMENT uint8 = 2
+	EXIT_NOTIMPLEMENTED  uint8 = 3
+	EXIT_NOPERMISSION    uint8 = 4
+	EXIT_NOTINSTALLED    uint8 = 5
+	EXIT_NOTCONFIGURED   uint8 = 6
+	EXIT_NOTRUNNING      uint8 = 7
+	//   8- 99 are reserved for future LSB use
+	// 100-149 are reserved for distribution use
+	// 150-199 are reserved for application use
+	// 200-254 are reserved for init system use
+	//
+	// Therefore, the following are taken from systemd's
+	// `src/basic/exit-status.h`
+	EXIT_CHDIR               uint8 = 200
+	EXIT_NICE                uint8 = 201
+	EXIT_FDS                 uint8 = 202
+	EXIT_EXEC                uint8 = 203
+	EXIT_MEMORY              uint8 = 204
+	EXIT_LIMITS              uint8 = 205
+	EXIT_OOM_ADJUST          uint8 = 206
+	EXIT_SIGNAL_MASK         uint8 = 207
+	EXIT_STDIN               uint8 = 208
+	EXIT_STDOUT              uint8 = 209
+	EXIT_CHROOT              uint8 = 210
+	EXIT_IOPRIO              uint8 = 211
+	EXIT_TIMERSLACK          uint8 = 212
+	EXIT_SECUREBITS          uint8 = 213
+	EXIT_SETSCHEDULER        uint8 = 214
+	EXIT_CPUAFFINITY         uint8 = 215
+	EXIT_GROUP               uint8 = 216
+	EXIT_USER                uint8 = 217
+	EXIT_CAPABILITIES        uint8 = 218
+	EXIT_CGROUP              uint8 = 219
+	EXIT_SETSID              uint8 = 220
+	EXIT_CONFIRM             uint8 = 221
+	EXIT_STDERR              uint8 = 222
+	_EXIT_RESERVED           uint8 = 223 // used to be tcpwrap don't reuse!
+	EXIT_PAM                 uint8 = 224
+	EXIT_NETWORK             uint8 = 225
+	EXIT_NAMESPACE           uint8 = 226
+	EXIT_NO_NEW_PRIVILEGES   uint8 = 227
+	EXIT_SECCOMP             uint8 = 228
+	EXIT_SELINUX_CONTEXT     uint8 = 229
+	EXIT_PERSONALITY         uint8 = 230
+	EXIT_APPARMOR_PROFILE    uint8 = 231
+	EXIT_ADDRESS_FAMILIES    uint8 = 232
+	EXIT_RUNTIME_DIRECTORY   uint8 = 233
+	EXIT_MAKE_STARTER        uint8 = 234
+	EXIT_CHOWN               uint8 = 235
+	EXIT_BUS_ENDPOINT        uint8 = 236
+	EXIT_SMACK_PROCESS_LABEL uint8 = 237
+)
+
+// Recover is a utility function to defer at the beginning of a
+// goroutine in order to have the correct exit code in the case of a
+// panic.
+func Recover() {
+	if r := recover(); r != nil {
+		Log.Err(fmt.Sprintf("panic: %v", r))
+		os.Exit(int(EXIT_FAILURE))
+	}
+}