diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright (c) 2023, Andrew Martin
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Andrew Martin nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/src/Linux/Systemd.hs b/src/Linux/Systemd.hs
new file mode 100644
--- /dev/null
+++ b/src/Linux/Systemd.hs
@@ -0,0 +1,36 @@
+module Linux.Systemd
+  ( listenFds
+  , isSocket
+  ) where
+
+import Foreign.C.Types (CInt(..))
+import System.Posix.Types (Fd(..))
+import Foreign.C.Error (Errno,getErrno)
+import Posix.Socket (Type(..),Family(..))
+
+foreign import ccall unsafe "systemd/sd-daemon.h sd_listen_fds"
+  c_listenFds :: CInt -> IO CInt
+
+foreign import ccall unsafe "systemd/sd-daemon.h sd_is_socket"
+  c_isSocket :: Fd -> Family -> Type -> CInt -> IO CInt
+
+-- | Check for file descriptors passed by the system manager. Returns
+-- the number of received file descriptors. If no file descriptors
+-- have been received, zero is returned.
+listenFds ::
+     CInt -- ^ unset environment (non-zero unsets @LISTEN_FDS@, @LISTEN_PID@, and @LISTEN_FDNAMES@)
+  -> IO (Either Errno CInt)
+listenFds a = c_listenFds a >>= errorsFromInt
+
+isSocket :: 
+     Fd -- ^ File descriptor
+  -> Family -- ^ Socket family
+  -> Type -- ^ Socket type
+  -> CInt -- ^ Positive: require listen mode. Zero: require non-listening mode.
+  -> IO (Either Errno CInt)
+isSocket a b c d = c_isSocket a b c d >>= errorsFromInt
+
+errorsFromInt :: CInt -> IO (Either Errno CInt)
+errorsFromInt r = if r >= 0
+  then pure (Right r)
+  else fmap Left getErrno
diff --git a/systemd-api.cabal b/systemd-api.cabal
new file mode 100644
--- /dev/null
+++ b/systemd-api.cabal
@@ -0,0 +1,29 @@
+cabal-version: 2.2
+name: systemd-api
+version: 0.1.0.0
+synopsis: systemd bindings
+description: Bindings to various systemd functions
+homepage: https://github.com/byteverse/systemd-api
+license: BSD-3-Clause
+license-file: LICENSE
+author: Andrew Martin
+maintainer: andrew.thaddeus@gmail.com
+copyright: 2023 Andrew Martin
+category: System
+build-type: Simple
+
+library
+  exposed-modules:
+    Linux.Systemd
+  build-depends:
+    , base >=4.17.1 && <5
+    , byte-order >= 0.1.2 && <0.2
+    , byteslice >= 0.2.10 && <0.3
+    , primitive >= 0.7 && <0.10
+    , text-short >=0.1.5
+    , posix-api >=0.5
+  hs-source-dirs: src
+  default-language: Haskell2010
+  ghc-options: -Wall -O2
+  extra-libraries: systemd
+  build-tool-depends: hsc2hs:hsc2hs >= 0.68.5