diff options
author | Pablo Neira Ayuso <pablo@netfilter.org> | 2020-02-17 22:38:13 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2020-02-19 15:17:11 +0100 |
commit | f8aec603aa7e9dad1316079d42c7efcc52b773fa (patch) | |
tree | 2c2f9c1c601610464431683c6d90ca0e8af27d2b /include/rule.h | |
parent | 9491f1a8eecf1c023ebe3a30b1e92e44a4a39a05 (diff) |
src: initial extended netlink error reporting
This patch correlates the in-kernel extended netlink error offset and
the location information.
Assuming 'foo' table does not exist, then error reporting shows:
# nft delete table foo
Error: Could not process rule: No such file or directory
delete table foo
^^^
Similarly, if table uniquely identified by handle '1234' does not exist,
then error reporting shows:
# nft delete table handle 1234
Error: Could not process rule: No such file or directory
delete table handle 1234
^^^^
Assuming 'bar' chain does not exists in the kernel, while 'foo' does:
# nft delete chain foo bar
Error: Could not process rule: No such file or directory
delete chain foo bar
^^^
This also gives us a hint when adding rules:
# nft add rule ip foo bar counter
Error: Could not process rule: No such file or directory
add rule ip foo bar counter
^^^
This is based on ("src: basic support for extended netlink errors") from
Florian Westphal, posted in 2018, with no netlink offset correlation
support.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/rule.h')
-rw-r--r-- | include/rule.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/rule.h b/include/rule.h index c232221e..ced63f3e 100644 --- a/include/rule.h +++ b/include/rule.h @@ -635,6 +635,8 @@ struct monitor { struct monitor *monitor_alloc(uint32_t format, uint32_t type, const char *event); void monitor_free(struct monitor *m); +#define NFT_NLATTR_LOC_MAX 8 + /** * struct cmd - command statement * @@ -666,6 +668,11 @@ struct cmd { struct markup *markup; struct obj *object; }; + struct { + uint16_t offset; + struct location *location; + } attr[NFT_NLATTR_LOC_MAX]; + int num_attrs; const void *arg; }; @@ -678,6 +685,8 @@ extern struct cmd *cmd_alloc_obj_ct(enum cmd_ops op, int type, const struct location *loc, struct obj *obj); extern void cmd_free(struct cmd *cmd); +void cmd_add_loc(struct cmd *cmd, uint16_t offset, struct location *loc); + #include <payload.h> #include <expression.h> |