On Tue, Mar 14, 2017 at 05:55:50PM +0900, Lorenzo Colitti wrote:
> Currently the iptables lock is hardcoded as "/run/xtables.lock".
> Allow users to change this path using the --with-xt-lock-name
> option to ./configure option. This is useful on systems like
> Android which do not have /run.
>
> Tested on Ubuntu, as follows:
>
> 1. By default, the lock is placed in /run/xtables.lock:
>
> $ make distclean-recursive && ./autogen.sh &&
> ./configure --disable-nftables --prefix /tmp/iptables &&
> make -j64 &&
> make install &&
> sudo strace -e open,flock /tmp/iptables/sbin/iptables -L foo
> ...
> open("/run/xtables.lock", O_RDONLY|O_CREAT, 0600) = 3
> flock(3, LOCK_EX|LOCK_NB) = 0
> iptables: No chain/target/match by that name.
>
> 2. Specifying the lock results in the expected location being
> used:
>
> $ make distclean-recursive && ./autogen.sh && \
> ./configure --disable-nftables --prefix /tmp/iptables \
> --with-xt-lock-name=/tmp/iptables/run/xtables.lock &&
> make -j64 &&
> make install &&
> sudo strace -e open,flock /tmp/iptables/sbin/iptables -L foo
> ...
> open("/tmp/iptables/run/xtables.lock", O_RDONLY|O_CREAT, 0600) = 3
> flock(3, LOCK_EX|LOCK_NB) = 0
> iptables: No chain/target/match by that name.
Applied, thanks Lorenzo!
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