Add partial implementation of mount

Cargo.toml

@@ -22,10 +22,12 @@ loginutils = [
     "getty"
 ]
 
+mount = ["libmesabox/mount"]
 # FIXME: this is only like this because we can't rename dependencies and we use the same macro in
 #        the tests that libmesabox uses to build
 tar_util = ["libmesabox/tar_util"]
 lsb = [
+    "mount",
     "tar_util"
 ]
 

libmesabox/Cargo.toml

@@ -21,9 +21,11 @@ loginutils = [
     "getty"
 ]
 
+mount = ["libc", "lazy_static"]
 # XXX: temporary until renaming dependencies is supported
 tar_util = ["tar", "globset"]
 lsb = [
+    "mount",
     "tar"
 ]
 
@@ -100,6 +102,7 @@ kernel32-sys = "0.2.2"
 winapi = { version = "0.3.5", features = ["namedpipeapi"] }
 nix = "0.10.0"
 
+lazy_static = { version = "1.0.1", optional = true }
 libc = { version = "0.2.40", optional = true }
 platform-info = { version = "0.0.1", optional = true }
 uucore = { git = "https://github.com/uutils/coreutils", features = ["encoding", "fs", "mode", "parse_time"], optional = true }

libmesabox/src/lib.rs

@@ -31,6 +31,9 @@ extern crate fnv;
 extern crate globset;
 #[cfg(feature = "libc")]
 extern crate libc;
+#[cfg(feature = "lazy_static")]
+#[macro_use]
+extern crate lazy_static;
 #[cfg(feature = "mio")]
 extern crate mio;
 #[cfg(feature = "pnet")]