Multi platform mechanism for getting error message from libc

ChrisDryden · ChrisDryden · commit 91b172429e69 · 2025-11-28T22:52:21.000Z
diff --git a/src/uucore/src/lib/features/process.rs b/src/uucore/src/lib/features/process.rs
@@ -72,8 +72,7 @@ pub fn pid_is_alive(pid: i32) -> bool {
     if pid <= 0 {
         return true;
     }
-
-    unsafe { libc::kill(pid, 0) == 0 || *libc::__errno_location() != libc::ESRCH }
+    unsafe { libc::kill(pid, 0) == 0 || Errno::last() != Errno::ESRCH }
 }
 
 /// `getsid()` returns the session ID of the process with process ID pid.

Original file line number	Diff line number	Diff line change
`@@ -72,8 +72,7 @@ pub fn pid_is_alive(pid: i32) -> bool {`
`72`	`72`	`if pid <= 0 {`
`73`	`73`	`return true;`
`74`	`74`	`}`
`75`		`-`
`76`		`- unsafe { libc::kill(pid, 0) == 0 \|\| *libc::__errno_location() != libc::ESRCH }`
	`75`	`+ unsafe { libc::kill(pid, 0) == 0 \|\| Errno::last() != Errno::ESRCH }`
`77`	`76`	`}`
`78`	`77`
`79`	`78`	/// `getsid()` returns the session ID of the process with process ID pid.