Re: Bug#20241: Timezones should depend on debian-utils

[Topi Miettinen <Topi.Miettinen@ml.tele.fi>]

Miquel van Smoorenburg writes:
> Well I'm not one for a living but it is one of my hobbies. This thread is
> long enough as it is but I just can't resist. /bin/sh is a Posix shell,
> so why not simply use:
> 
> set -C
> : > /tmp/tempfile.$$ || exit 1
> set +C
> 
> set -C causes a Posix shell to open files with O_EXCL

I thought so too until Richard Braakman enlightened me: bash checks if the
file is regular file, if not, opens it without O_EXCL. Which is worse,
zapping /etc/passwd or /dev/hda? :-(

Current bash scripts that use -C are broken. If this is fixed in some
future version of bash, packages that use -C should declare a dependecy on
bash >= xx. If they trust -C in installation scripts, change that to
Pre-dependency, right?

-Topi



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