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ipfw(8): Fix most warnings with the default WARNS level.

Authored by markj on Jun 25 2020, 7:25 PM.



Most of these fall into one of several patterns.

- Missing const qualifiers. All but one of these were benign (i.e.,
adding "const" fixes the warning). The exception was in print_ip(),
where we write

cmd->addr.s_addr = htonl(cmd->addr.s_addr);
<print statement>
cmd->addr.s_addr = htonl(cmd->addr.s_addr);

so this can easily be fixed with a temporary variable.

- A global variable `co` shadowing local declarations. In ipfw2.c, some
code gets `co` through a function parameter for some reason. I
renamed the global `co` to `g_co`. I think this will help a bit if
anyone ever tries to convert this code to a libipfw.

- Using a signed int as an index variable where the loop bound is
unsigned. I just converted the variable to have the same type as the

- Missing static qualifiers on some functions.

- I left the -Wcast-align warnings alone. They are more involved to
fix. It might be sufficient to just add an __aligned qualifier to the
corresponding kernel types.

Diff Detail

rS FreeBSD src repository - subversion
Automatic diff as part of commit; lint not applicable.
Automatic diff as part of commit; unit tests not applicable.

Event Timeline

markj requested review of this revision.Jun 25 2020, 7:25 PM
markj created this revision.
markj edited the summary of this revision. (Show Details)
markj added a subscriber: nc.

Any objections to committing this?

This revision is now accepted and ready to land.Jul 13 2020, 7:07 AM

Thanks for fixing this!