diff options
| author | Patrick McHardy <kaber@trash.net> | 2015-04-11 04:27:28 +0300 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2015-04-13 17:25:49 +0300 |
| commit | 58f40ab6e2427532881a79e139a4aaae7fbe1826 (patch) | |
| tree | f6f7998998dd1faafd5ebc90948ec8d4d4b74e6a /net | |
| parent | 1ec10212f9bc62645932b0ca39bab0eb57d5331a (diff) | |
| download | linux-58f40ab6e2427532881a79e139a4aaae7fbe1826.tar.xz | |
netfilter: nft_lookup: use nft_validate_register_store() to validate types
In preparation of validating the length of a register store, use
nft_validate_register_store() in nft_lookup instead of open coding the
validation.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nf_tables_api.c | 7 | ||||
| -rw-r--r-- | net/netfilter/nft_lookup.c | 9 |
2 files changed, 8 insertions, 8 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index a1e4a928f00c..c96070e237e7 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -4169,7 +4169,7 @@ EXPORT_SYMBOL_GPL(nft_validate_output_register); * Validate that a data load uses the appropriate data type for * the destination register and the length is within the bounds. * A value of NULL for the data means that its runtime gathered - * data, which is always of type NFT_DATA_VALUE. + * data. */ int nft_validate_register_store(const struct nft_ctx *ctx, enum nft_registers reg, @@ -4180,10 +4180,11 @@ int nft_validate_register_store(const struct nft_ctx *ctx, switch (reg) { case NFT_REG_VERDICT: - if (data == NULL || type != NFT_DATA_VERDICT) + if (type != NFT_DATA_VERDICT) return -EINVAL; - if (data->verdict == NFT_GOTO || data->verdict == NFT_JUMP) { + if (data != NULL && + (data->verdict == NFT_GOTO || data->verdict == NFT_JUMP)) { err = nf_tables_check_loops(ctx, data->chain); if (err < 0) return err; diff --git a/net/netfilter/nft_lookup.c b/net/netfilter/nft_lookup.c index d8cf86fb30fc..3e4d8efa76bc 100644 --- a/net/netfilter/nft_lookup.c +++ b/net/netfilter/nft_lookup.c @@ -84,11 +84,10 @@ static int nft_lookup_init(const struct nft_ctx *ctx, if (err < 0) return err; - if (priv->dreg == NFT_REG_VERDICT) { - if (set->dtype != NFT_DATA_VERDICT) - return -EINVAL; - } else if (set->dtype == NFT_DATA_VERDICT) - return -EINVAL; + err = nft_validate_register_store(ctx, priv->dreg, NULL, + set->dtype, set->dlen); + if (err < 0) + return err; } else if (set->flags & NFT_SET_MAP) return -EINVAL; |