System V shared memory APIs (2nd draft)

Cargo.toml

@@ -64,6 +64,7 @@ resource = []
 sched = ["process"]
 signal = ["process"]
 socket = ["memoffset"]
+system_v = ["fs"]
 term = []
 time = []
 ucontext = ["signal"]

changelog/2314.added.md

@@ -0,0 +1 @@
+Add SystemV semaphore set and shared memory segments support.

src/sys/mod.rs

@@ -143,6 +143,12 @@ feature! {
 #[allow(missing_docs)]
 pub mod sysinfo;
 
+#[cfg(any(bsd, target_os = "linux"))]
+feature! {
+    #![feature = "system_v"]
+    pub mod system_v;
+}
+
 feature! {
     #![feature = "term"]
     #[allow(missing_docs)]

src/sys/system_v/mod.rs

@@ -0,0 +1,6 @@
+//! Interact with SystemV inter-process communication API
+
+#[cfg(any(bsd, target_os = "linux"))]
+pub mod sem;
+#[cfg(any(bsd, target_os = "linux"))]
+pub mod shm;

src/sys/system_v/sem.rs

@@ -0,0 +1,2 @@
+//! Safe wrapper around a SystemV semaphore
+//!