There is a comment in omprog.c:
/* we close all file handles as we fork soon
* Is there a better way to do this? - mail me! * [email protected]
*/
for(i = 3 ; i <= 65535 ; ++i)
close(i);
The better, not-portable, way is to open /proc/self/fd directory, read all
the entries and close exactly those file descriptors. Configure script should
check if /proc/self/fd exists and has the right contents. If it doesn't
exist, then check for /dev/fd directory.
Perhaps the check needs to be done in run-time, as well. IIRC, FreeBSD
doesn't eneble procfs by default, but it can be mounted by administrators
who wish to do so. I don't know if FreeBSD has /dev/fd.
If the above directory is not available, use getrlimit(RLIMIT_NOFILE) to
get the upper bound for the file descriptor numbers (it will be in the
soft limit field) and close them all in a loop. The limit will usually be
much lower than 65536.
--
.-. .-. Yes, I am an agent of Satan, but my duties are largely
(_ \ / _) ceremonial.
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