Kernel: Make Process::FileDescriptions::allocate return KResultOr<int>

Modernize more error checking by utilizing KResultOr.
Author: https://github.com/bgianfo Commit: ba03b6ad02 Pull-request: https://github.com/SerenityOS/serenity/pull/9034 Reviewed-by: https://github.com/awesomekling Reviewed-by: https://github.com/gunnarbeutner
2025-07-30 20:59:16 +00:00 · 2021-07-27 02:12:51 -07:00 · 2021-07-27 02:12:51 -07:00 · ba03b6ad02 · 2024-07-18 07:59:38 +09:00
commit ba03b6ad02
parent d2cee9cbf6
10 changed files with 48 additions and 37 deletions
--- a/Kernel/Syscalls/anon_create.cpp
+++ b/Kernel/Syscalls/anon_create.cpp
@ -25,10 +25,10 @@ KResultOr<FlatPtr> Process::sys$anon_create(size_t size, int options)
    if (size > NumericLimits<ssize_t>::max())
        return EINVAL;

-    int new_fd = m_fds.allocate();
-    if (new_fd < 0)
-        return new_fd;
-
+    auto new_fd_or_error = m_fds.allocate();
+    if (new_fd_or_error.is_error())
+        return new_fd_or_error.error();
+    auto new_fd = new_fd_or_error.value();
    auto vmobject = AnonymousVMObject::try_create_purgeable_with_size(size, AllocationStrategy::Reserve);
    if (!vmobject)
        return ENOMEM;