Make it work

Signed-off-by: tison <[email protected]>

Author: tisonkun

src/lib.rs

@@ -200,9 +200,7 @@ feature! {
     pub mod spawn;
 }
 
-#[cfg(any(
-    target_os = "macos",
-))]
+#[cfg(any(target_os = "macos"))]
 feature! {
     #![feature = "syslog"]
     pub mod syslog;

src/syslog.rs

@@ -1,3 +1,5 @@
+use std::ffi::CString;
+
 #[cfg(target_os = "macos")]
 pub fn openlog(ident: &str, logopt: LogFlags, facility: Facility) {
     let ident = CString::new(ident).expect("TODO: handle error");
@@ -6,8 +8,14 @@ pub fn openlog(ident: &str, logopt: LogFlags, facility: Facility) {
     }
 }
 
+#[cfg(target_os = "macos")]
+pub fn syslog(priority: libc::c_int, message: &str) {
+    let formatter = CString::new("%s").expect("TODO: handle error");
+    let message = CString::new(message).expect("TODO: handle error");
+    unsafe { libc::syslog(priority, formatter.as_ptr(), message.as_ptr()) }
+}
+
 pub use self::consts::*;
-use std::ffi::CString;
 
 #[cfg(target_os = "macos")]
 mod consts {
@@ -28,6 +36,20 @@ mod consts {
         }
     }
 
+    #[derive(Clone, Copy, Debug, Eq, PartialEq)]
+    #[repr(i32)]
+    #[non_exhaustive]
+    pub enum Severity {
+        LOG_EMERG = libc::LOG_EMERG,
+        LOG_ALERT = libc::LOG_ALERT,
+        LOG_CRIT = libc::LOG_CRIT,
+        LOG_ERR = libc::LOG_ERR,
+        LOG_WARNING = libc::LOG_WARNING,
+        LOG_NOTICE = libc::LOG_NOTICE,
+        LOG_INFO = libc::LOG_INFO,
+        LOG_DEBUG = libc::LOG_DEBUG,
+    }
+
     #[derive(Clone, Copy, Debug, Eq, PartialEq)]
     #[repr(i32)]
     #[non_exhaustive]

test/test.rs

@@ -42,6 +42,9 @@ mod test_sendfile;
 ))]
 mod test_spawn;
 
+#[cfg(any(target_os = "macos"))]
+mod test_syslog;
+
 mod test_time;
 mod test_unistd;
 

test/test_syslog.rs

@@ -0,0 +1,12 @@
+#[cfg(target_os = "macos")]
+#[test]
+fn test_syslog_hello_world() {
+    use nix::syslog::{openlog, syslog, Facility, LogFlags, Severity};
+
+    openlog(
+        "test_syslog_hello_world",
+        LogFlags::LOG_PID,
+        Facility::LOG_USER,
+    );
+    syslog(Severity::LOG_ERR as libc::c_int, "Hello, nix!");
+}