Re: subshell output swallowed (patch)

[Egmont Koblinger <egmont uhulinux hu>]

On Tue, Jan 24, 2006 at 12:29:23PM +0200, Pavel Tsekov wrote:

> > write(1, "\33[0mcopy_reg.py\33[0m        \33[0mi"..., 100) = 53
> 
> This strace is not convincing - i don't see calls failing with -1.

No, no syscall is failing. You ask the kernel to write 100 bytes, and since
a signal interrupts it, it says "everything went find but I only wrote 53
bytes". Then it's your job not to forget to write the remaining 47 bytes.

> after all we have SA_RESTART.

I don't know what SA_RESTART is. If it means the partially succeeded write()
call is automatically restarted by the kernel to write the remaining bytes,
then of course using it could be a cleaner solution than my patch.



-- 
Egmont