Vendor dependencies for 0.3.0 release

vendor/nix/test/test_syslog.rs

@@ -0,0 +1,38 @@
+use nix::syslog::{openlog, syslog, Facility, LogFlags, Severity};
+
+#[test]
+fn test_syslog_hello_world() {
+    let flags = LogFlags::LOG_PID;
+
+    #[cfg(not(target_os = "linux"))]
+    openlog(None::<&str>, flags, Facility::LOG_USER).unwrap();
+    #[cfg(target_os = "linux")]
+    openlog(None, flags, Facility::LOG_USER).unwrap();
+
+    syslog(Severity::LOG_EMERG, "Hello, nix!").unwrap();
+    let name = "syslog";
+    syslog(Severity::LOG_NOTICE, &format!("Hello, {name}!")).unwrap();
+}
+
+#[test]
+#[cfg(target_os = "linux")]
+fn test_openlog_with_ident() {
+    use std::ffi::CStr;
+
+    const IDENT: &CStr = unsafe {
+        CStr::from_bytes_with_nul_unchecked(b"test_openlog_with_ident\0")
+    };
+
+    let flags = LogFlags::LOG_PID;
+    openlog(Some(IDENT), flags, Facility::LOG_USER).unwrap();
+    syslog(Severity::LOG_EMERG, "Hello, ident!").unwrap();
+}
+
+#[test]
+#[cfg(not(target_os = "linux"))]
+fn test_openlog_with_ident() {
+    let flags = LogFlags::LOG_PID;
+    openlog(Some("test_openlog_with_ident"), flags, Facility::LOG_USER)
+        .unwrap();
+    syslog(Severity::LOG_EMERG, "Hello, ident!").unwrap();
+}