diff --git a/reclass_tools/helpers/proc_enums.py b/reclass_tools/helpers/proc_enums.py
new file mode 100644
index 0000000..73518fc
--- /dev/null
+++ b/reclass_tools/helpers/proc_enums.py
@@ -0,0 +1,124 @@
+#    Copyright 2016 Mirantis, Inc.
+#
+#    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.
+
+import enum
+
+
+@enum.unique
+class SigNum(enum.IntEnum):
+    SIGHUP = 1  # Hangup (POSIX).
+    SIGINT = 2  # Interrupt (ANSI).
+    SIGQUIT = 3  # Quit (POSIX).
+    SIGILL = 4  # Illegal instruction (ANSI).
+    SIGTRAP = 5  # Trace trap (POSIX).
+    SIGABRT = 6  # Abort (ANSI).
+    SIGBUS = 7  # BUS error (4.2 BSD).
+    SIGFPE = 8  # Floating-point exception (ANSI).
+    SIGKILL = 9  # Kill, unblockable (POSIX).
+    SIGUSR1 = 10  # User-defined signal 1 (POSIX).
+    SIGSEGV = 11  # Segmentation violation (ANSI).
+    SIGUSR2 = 12  # User-defined signal 2 (POSIX).
+    SIGPIPE = 13  # Broken pipe (POSIX).
+    SIGALRM = 14  # Alarm clock (POSIX).
+    SIGTERM = 15  # Termination (ANSI).
+    SIGSTKFLT = 16  # Stack fault.
+    SIGCHLD = 17  # Child status has changed (POSIX).
+    SIGCONT = 18  # Continue (POSIX).
+    SIGSTOP = 19  # Stop, unblockable (POSIX).
+    SIGTSTP = 20  # Keyboard stop (POSIX).
+    SIGTTIN = 21  # Background read from tty (POSIX).
+    SIGTTOU = 22  # Background write to tty (POSIX).
+    SIGURG = 23  # Urgent condition on socket (4.2 BSD).
+    SIGXCPU = 24  # CPU limit exceeded (4.2 BSD).
+    SIGXFSZ = 25  # File size limit exceeded (4.2 BSD).
+    SIGVTALRM = 26  # Virtual alarm clock (4.2 BSD).
+    SIGPROF = 27  # Profiling alarm clock (4.2 BSD).
+    SIGWINCH = 28  # Window size change (4.3 BSD, Sun).
+    SIGPOLL = 29  # Pollable event occurred (System V)
+    SIGPWR = 30  # Power failure restart (System V).
+    SIGSYS = 31  # Bad system call.
+
+    def __str__(self):
+        return "{name}<{value:d}(0x{value:02X})>".format(
+            name=self.name,
+            value=self.value
+        )
+
+
+@enum.unique
+class ExitCodes(enum.IntEnum):
+    EX_OK = 0  # successful termination
+
+    EX_INVALID = 0xDEADBEEF  # uint32 debug value. Impossible for POSIX
+
+    EX_ERROR = 1  # general failure
+    EX_BUILTIN = 2  # Misuse of shell builtins (according to Bash)
+
+    EX_USAGE = 64  # command line usage error
+    EX_DATAERR = 65  # data format error
+    EX_NOINPUT = 66  # cannot open input
+    EX_NOUSER = 67  # addressee unknown
+    EX_NOHOST = 68  # host name unknown
+    EX_UNAVAILABLE = 69  # service unavailable
+    EX_SOFTWARE = 70  # internal software error
+    EX_OSERR = 71  # system error (e.g., can't fork)
+    EX_OSFILE = 72  # critical OS file missing
+    EX_CANTCREAT = 73  # can't create (user) output file
+    EX_IOERR = 74  # input/output error
+    EX_TEMPFAIL = 75  # temp failure; user is invited to retry
+    EX_PROTOCOL = 76  # remote error in protocol
+    EX_NOPERM = 77  # permission denied
+    EX_CONFIG = 78  # configuration error
+
+    EX_NOEXEC = 126  # If a command is found but is not executable
+    EX_NOCMD = 127  # If a command is not found
+
+    # Signal exits:
+    EX_SIGHUP = 128 + SigNum.SIGHUP
+    EX_SIGINT = 128 + SigNum.SIGINT
+    EX_SIGQUIT = 128 + SigNum.SIGQUIT
+    EX_SIGILL = 128 + SigNum.SIGILL
+    EX_SIGTRAP = 128 + SigNum.SIGTRAP
+    EX_SIGABRT = 128 + SigNum.SIGABRT
+    EX_SIGBUS = 128 + SigNum.SIGBUS
+    EX_SIGFPE = 128 + SigNum.SIGFPE
+    EX_SIGKILL = 128 + SigNum.SIGKILL
+    EX_SIGUSR1 = 128 + SigNum.SIGUSR1
+    EX_SIGSEGV = 128 + SigNum.SIGSEGV
+    EX_SIGUSR2 = 128 + SigNum.SIGUSR2
+    EX_SIGPIPE = 128 + SigNum.SIGPIPE
+    EX_SIGALRM = 128 + SigNum.SIGALRM
+    EX_SIGTERM = 128 + SigNum.SIGTERM
+    EX_SIGSTKFLT = 128 + SigNum.SIGSTKFLT
+    EX_SIGCHLD = 128 + SigNum.SIGCHLD
+    EX_SIGCONT = 128 + SigNum.SIGCONT
+    EX_SIGSTOP = 128 + SigNum.SIGSTOP
+    EX_SIGTSTP = 128 + SigNum.SIGTSTP
+    EX_SIGTTIN = 128 + SigNum.SIGTTIN
+    EX_SIGTTOU = 128 + SigNum.SIGTTOU
+    EX_SIGURG = 128 + SigNum.SIGURG
+    EX_SIGXCPU = 128 + SigNum.SIGXCPU
+    EX_SIGXFSZ = 128 + SigNum.SIGXFSZ
+    EX_SIGVTALRM = 128 + SigNum.SIGVTALRM
+    EX_SIGPROF = 128 + SigNum.SIGPROF
+    EX_SIGWINCH = 128 + SigNum.SIGWINCH
+    EX_SIGPOLL = 128 + SigNum.SIGPOLL
+    EX_SIGPWR = 128 + SigNum.SIGPWR
+    EX_SIGSYS = 128 + SigNum.SIGSYS
+
+    def __str__(self):
+        return "{name}<{value:d}(0x{value:02X})>".format(
+            name=self.name,
+            value=self.value
+        )