On Sun, 2003-02-23 at 18:43, Alan Cox wrote:
> On Sun, 2003-02-23 at 22:29, Albert Cahalan wrote:
>> Yes. This is the behavior of all SysV UNIX systems
>> and Linux kernels. Unfortunately, BSD got it wrong.
>
> Firstly BSD didn't get it wrong, things merely diverged
> historically after V7 unix.
BSD is wrong for not choosing a different name
for the new system call and leaving the old one.
There could have been a signal2() with the new
behavior. X/Open even did this, with bsd_signal()
as the name. Breaking compatibility is bad.
>> Worse, the glibc developers saw fit to ignore both
>> UNIX history and Linus. They implemented BSD behavior
>> by making signal() use the sigaction system call
>
> Also wrong. If you read the gcc documentation you can
> select favouring BSD or SYS5 behaviour at compile time
>
> glibc has the best of both worlds
Non-default behavior is nearly irrelevant. The default
should have matched traditional UNIX and Linux behavior.
The best of both worlds certainly means traditional
signal() and a bsd_signal(), with a non-default option
to choose the BSD signal() behavior.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Feb 23 2003 - 22:00:40 EST