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This patch turns on POSIXLY_CORRECT on the getopt parser to enforce
options before commands. Users get a hint in such a case:
# nft list ruleset -a
Error: syntax error, options must be specified before commands
nft list ruleset -a
^ ~~
This patch recovers 9fc71bc6b602 ("main: Fix for misleading error with
negative chain priority").
Tests have been updated.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This reverts commit 9fc71bc6b602c8706d1214e0100bcd7638c257e3.
Given that this change breaks typical commands like
'nft list ruleset -a' while on the other hand escaping of semicolons and
(depending on shell) curly braces is still required, decision was made
to not go with this solution.
Signed-off-by: Phil Sutter <phil@nwl.cc>
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getopt_long() would try to parse the negative priority as an option and
return -1 as it is not known:
| # nft add chain x y { type filter hook input priority -30\; }
| nft: invalid option -- '3'
Fix this by prefixing optstring with a plus character. This instructs
getopt_long() to not collate arguments but just stop after the first
non-option, leaving the rest for manual handling. In fact, this is just
what nft desires: mixing options with nft syntax leads to confusive
command lines anyway.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
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