added getpid and getppid

2 files changed, 18 insertions, 1 deletions

diff --git a/src/unistd.rs b/src/unistd.rs
index a4e37412..1852721d 100644
--- a/src/unistd.rs
+++ b/src/unistd.rs
@@ -14,7 +14,7 @@ pub use self::linux::*;
 mod ffi {
     use libc::{c_char, c_int, size_t};
     pub use libc::{close, read, write, pipe, ftruncate, unlink};
-    pub use libc::funcs::posix88::unistd::fork;
+    pub use libc::funcs::posix88::unistd::{fork, getpid, getppid};
 
     extern {
         // duplicate a file descriptor
@@ -88,6 +88,15 @@ pub fn fork() -> Result<Fork> {
 }
 
 #[inline]
+pub fn getpid() -> pid_t {
+    unsafe { ffi::getpid() } // no error handling, according to man page: "These functions are always successful."
+}
+#[inline]
+pub fn getppid() -> pid_t {
+    unsafe { ffi::getppid() } // no error handling, according to man page: "These functions are always successful."
+}
+
+#[inline]
 pub fn dup(oldfd: Fd) -> Result<Fd> {
     let res = unsafe { ffi::dup(oldfd) };
 
diff --git a/test/test_unistd.rs b/test/test_unistd.rs
index 5c0076c9..50af197c 100644
--- a/test/test_unistd.rs
+++ b/test/test_unistd.rs
@@ -29,6 +29,14 @@ fn test_fork_and_waitpid() {
     }
 }
 
+#[test]
+fn test_getpid() {
+    let pid = getpid();
+    let ppid = getppid();
+    assert!(pid > 0);
+    assert!(ppid > 0);
+}
+
 macro_rules! execve_test_factory(
     ($test_name:ident, $syscall:ident, $unix_sh:expr, $android_sh:expr) => (
     #[test]