Add getresuid/gid and setresuid/gid on BSDs

Author: rtzoeller

CHANGELOG.md

@@ -31,6 +31,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
   (#[1622](https://github.com/nix-rust/nix/pull/1622))
 - Added `sendfile` on DragonFly.
   (#[1615](https://github.com/nix-rust/nix/pull/1615))
+- Added `getresuid`, `setresuid`, `getresgid`, and `setresgid` on DragonFly, FreeBSD, and OpenBSD.
+  (#[1628](https://github.com/nix-rust/nix/pull/1628))
 
 ### Changed
 ### Fixed

src/unistd.rs

@@ -30,11 +30,18 @@ feature! {
     pub use self::pivot_root::*;
 }
 
-#[cfg(any(target_os = "android", target_os = "freebsd",
-          target_os = "linux", target_os = "openbsd"))]
+#[cfg(any(target_os = "android",
+          target_os = "dragonfly",
+          target_os = "freebsd",
+          target_os = "linux",
+          target_os = "openbsd"))]
 pub use self::setres::*;
 
-#[cfg(any(target_os = "android", target_os = "linux"))]
+#[cfg(any(target_os = "android",
+          target_os = "dragonfly",
+          target_os = "freebsd",
+          target_os = "linux",
+          target_os = "openbsd"))]
 pub use self::getres::*;
 
 feature! {
@@ -2691,8 +2698,11 @@ mod pivot_root {
 }
 }
 
-#[cfg(any(target_os = "android", target_os = "freebsd",
-          target_os = "linux", target_os = "openbsd"))]
+#[cfg(any(target_os = "android",
+          target_os = "dragonfly",
+          target_os = "freebsd",
+          target_os = "linux",
+          target_os = "openbsd"))]
 mod setres {
     feature! {
     #![feature = "users"]
@@ -2735,7 +2745,11 @@ mod setres {
     }
 }
 
-#[cfg(any(target_os = "android", target_os = "linux"))]
+#[cfg(any(target_os = "android",
+          target_os = "dragonfly",
+          target_os = "freebsd",
+          target_os = "linux",
+          target_os = "openbsd"))]
 mod getres {
     feature! {
     #![feature = "users"]

test/test_unistd.rs

@@ -621,7 +621,11 @@ fn test_sysconf_unsupported() {
 }
 
 
-#[cfg(any(target_os = "android", target_os = "linux"))]
+#[cfg(any(target_os = "android",
+          target_os = "dragonfly",
+          target_os = "freebsd",
+          target_os = "linux",
+          target_os = "openbsd"))]
 #[test]
 fn test_getresuid() {
     let resuids = getresuid().unwrap();
@@ -630,7 +634,11 @@ fn test_getresuid() {
     assert!(resuids.saved.as_raw() != libc::uid_t::max_value());
 }
 
-#[cfg(any(target_os = "android", target_os = "linux"))]
+#[cfg(any(target_os = "android",
+          target_os = "dragonfly",
+          target_os = "freebsd",
+          target_os = "linux",
+          target_os = "openbsd"))]
 #[test]
 fn test_getresgid() {
     let resgids = getresgid().unwrap();