On 27 Oct 2006, at 16:00, Henrique de Moraes Holschuh wrote:
That said, just moving off 0,1,2 is not difficult. ... The ideal fix would be to have them be dynamic.
Ideally, 0, 1, and 2 should be reserved for stdin, stdout, and stderr. In an environment where std* don't make sense, i.e., daemons, they should still be reserved, since standard libraries occasionally try to use them. I'm not all that sure that moving off 0, 1, and 2 would be that easy. Take main() from master/service.c, where the accepted socket is dup2()'d 0, 1, and 2. imapd, pop3d, etc, seem to call prot_new() on the descriptors routinely. However, you'd also have to catch references to getpeername( 0, ... ), getsockname( 0, ... ), shutdown( 0 ), etc. In principal straightforward, but in practice there's a lot of code that would need to be reviewed & tested.
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