[libc-commits] [libc] Return errno from F_OFD_SETLKW failure path in fcntl. (PR #166252)

[via libc-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libc

Author: Jackson Stogel (jtstogel)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/166252.diff


1 Files Affected:

- (modified) libc/src/__support/OSUtil/linux/fcntl.cpp (+1-1) 


``````````diff
diff --git a/libc/src/__support/OSUtil/linux/fcntl.cpp b/libc/src/__support/OSUtil/linux/fcntl.cpp
index bb76eee90efd2..08db4859c6417 100644
--- a/libc/src/__support/OSUtil/linux/fcntl.cpp
+++ b/libc/src/__support/OSUtil/linux/fcntl.cpp
@@ -66,7 +66,7 @@ ErrorOr<int> fcntl(int fd, int cmd, void *arg) {
         LIBC_NAMESPACE::syscall_impl<int>(FCNTL_SYSCALL_ID, fd, cmd, &flk64);
     // On failure, return
     if (ret < 0)
-      return Error(-1);
+      return Error(-ret);
     // Check for overflow, i.e. the offsets are not the same when cast
     // to off_t from off64_t.
     if (static_cast<off_t>(flk64.l_len) != flk64.l_len ||

``````````

</details>


https://github.com/llvm/llvm-project/pull/166252