Re: Close() in daemon loop

> A little more: further up in main, there is a loop:
>
> if (opt_catch_signals)
> for (n = Squid_MaxFD; n > 2; n--)
> close(n);
>
> My question is: why does this (very similar) loop stop at 3, and the other
> start at 0, instead of 3?

While it seems like stating the obvious, in case you don't realise,
FD 0 = STDIN, FD 1 = STDOUT, FD 2 = STDERR.

However it should be valid to close all of them.

Also, the general close all valid FDs loop is fairly common in Unix.

David.

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David Luyer
Senior Network Engineer
Pacific Internet (Aust) Pty Ltd
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