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// Copyright 2015-2016, 2018-2019 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"
)
// daemon(7) recommends using the exit codes defined in the "LSB
// recommendations for SysV init scripts"[1].
//
// BSD sysexits.h (which is also in GNU libc) defines several exit
// codes in the range 64-78. These are typically used in the context
// of mail delivery; originating with BSD delivermail (the NCP
// predecessor to the TCP/IP sendmail), and are still used by modern
// mail systems such as Postfix to interpret the local(8) delivery
// agent's exit status. Using these for service exit codes isn't
// recommended by LSB (which says they are in the range reserved for
// future LSB use) or by daemon(7). However, they are used in
// practice, and are recognized by systemd.
//
// [1]: http://refspecs.linuxbase.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
//
// sysexits(3): https://www.freebsd.org/cgi/man.cgi?query=sysexits
//
// local(8): http://www.postfix.org/local.8.html
const (
// 0- 8 are currently defined by LSB.
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.
// However, let's provide the EX_ codes from
// sysexits.h anyway.
EX_OK uint8 = EXIT_SUCCESS
EX_USAGE uint8 = 64 // command line usage error
EX_DATAERR uint8 = 65 // data format error
EX_NOINPUT uint8 = 66 // cannot open input
EX_NOUSER uint8 = 67 // addressee unknown
EX_NOHOST uint8 = 68 // host name unknown
EX_UNAVAILABLE uint8 = 69 // service unavailable
EX_SOFTWARE uint8 = 70 // internal software error
EX_OSERR uint8 = 71 // system error (e.g., can't fork)
EX_OSFILE uint8 = 72 // critical OS file missing
EX_CANTCREAT uint8 = 73 // can't create (user) output file
EX_IOERR uint8 = 74 // input/output error
EX_TEMPFAIL uint8 = 75 // temp failure; user is invited to retry
EX_PROTOCOL uint8 = 76 // remote error in protocol
EX_NOPERM uint8 = 77 // permission denied
EX_CONFIG uint8 = 78 // configuration error
//
// 100-149 are reserved for distribution use.
//
// 150-199 are reserved for application use.
//
// 200-254 are reserved (for init system use).
// So, take codes 200+ from systemd's
// `src/basic/exit-status.h`
// (last updated for SD v242)
EXIT_CHDIR uint8 = 200 // SD v8+
EXIT_NICE uint8 = 201 // SD v8+
EXIT_FDS uint8 = 202 // SD v8+
EXIT_EXEC uint8 = 203 // SD v8+
EXIT_MEMORY uint8 = 204 // SD v8+
EXIT_LIMITS uint8 = 205 // SD v8+
EXIT_OOM_ADJUST uint8 = 206 // SD v8+
EXIT_SIGNAL_MASK uint8 = 207 // SD v8+
EXIT_STDIN uint8 = 208 // SD v8+
EXIT_STDOUT uint8 = 209 // SD v8+
EXIT_CHROOT uint8 = 210 // SD v8+
EXIT_IOPRIO uint8 = 211 // SD v8+
EXIT_TIMERSLACK uint8 = 212 // SD v8+
EXIT_SECUREBITS uint8 = 213 // SD v8+
EXIT_SETSCHEDULER uint8 = 214 // SD v8+
EXIT_CPUAFFINITY uint8 = 215 // SD v8+
EXIT_GROUP uint8 = 216 // SD v8+
EXIT_USER uint8 = 217 // SD v8+
EXIT_CAPABILITIES uint8 = 218 // SD v8+
EXIT_CGROUP uint8 = 219 // SD v8+
EXIT_SETSID uint8 = 220 // SD v8+
EXIT_CONFIRM uint8 = 221 // SD v8+
EXIT_STDERR uint8 = 222 // SD v8+
EXIT_TCPWRAP uint8 = 223 // SD v8-v211
EXIT_PAM uint8 = 224 // SD v8+
EXIT_NETWORK uint8 = 225 // SD v33+
EXIT_NAMESPACE uint8 = 226 // SD v38+
EXIT_NO_NEW_PRIVILEGES uint8 = 227 // SD v187+
EXIT_SECCOMP uint8 = 228 // SD v187+
EXIT_SELINUX_CONTEXT uint8 = 229 // SD v209+
EXIT_PERSONALITY uint8 = 230 // SD v209+
EXIT_APPARMOR_PROFILE uint8 = 231 // SD v210+
EXIT_ADDRESS_FAMILIES uint8 = 232 // SD v211+
EXIT_RUNTIME_DIRECTORY uint8 = 233 // SD v211+
EXIT_MAKE_STARTER uint8 = 234 // SD v214-v234
EXIT_CHOWN uint8 = 235 // SD v214+
EXIT_SMACK_PROCESS_LABEL uint8 = 236 // SD v230+; was BUS_ENDPOINT in SD v217-v229
EXIT_KEYRING uint8 = 237 // SD v233+; was SMACK_PROCESS_LABEL in SD v218-v229
EXIT_STATE_DIRECTORY uint8 = 238 // SD v235+
EXIT_CACHE_DIRECTORY uint8 = 239 // SD v235+
EXIT_LOGS_DIRECTORY uint8 = 240 // SD v235+
EXIT_CONFIGURATION_DIRECTORY uint8 = 241 // SD v235+
)
// 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))
}
}
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