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Commit 54136f8b authored by Bart Van Assche's avatar Bart Van Assche
Browse files

Add a comment to explain how errno is set 



Since it is nontrivial which modifies `errno` is modified in
ExecuteForTask(), add a comment that explains this.

Bug: 213617178
Test: Compile-tested only.
Change-Id: I49ce9c8054fdc59e61b2e5f9ffe6f16743a94401
Signed-off-by: default avatarBart Van Assche <bvanassche@google.com>
parent 48d403a5

libprocessgroup/task_profiles.cpp

+3 −0
Original line number Diff line number Diff line
@@ -215,6 +215,9 @@ bool SetAttributeAction::ExecuteForTask(int tid) const { 
                return false;

            }

        }

        // The PLOG() statement below uses the error code stored in `errno` by

        // WriteStringToFile() because access() only overwrites `errno` if it fails

        // and because this code is only reached if the access() function returns 0.

        PLOG(ERROR) << "Failed to write '" << value_ << "' to " << path;

        return false;

    }