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| author | Paul Moore <paul.moore@hp.com> | 2006-11-17 17:38:48 -0500 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-02 21:24:09 -0800 |
| commit | 6ce61a7c2678800cfe59a5f4a41ce8f785b9d355 (patch) | |
| tree | ab15a8da36aba770616b43b536efb881d9b48988 /net/ipv4/cipso_ipv4.c | |
| parent | 05e00cbf5036929355020dab4837b637203a0742 (diff) | |
| download | linux-6ce61a7c2678800cfe59a5f4a41ce8f785b9d355.tar.gz | |
NetLabel: add tag verification when adding new CIPSOv4 DOI definitions
Currently the CIPSOv4 engine does not do any sort of checking when a new DOI definition is added. The tags are still verified but only as a side effect of normal NetLabel operation (packet processing, socket labeling, etc.) which would cause application errors due to the faulty configuration. This patch adds tag checking when new DOI definition are added allowing us to catch these configuration problems when they happen. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'net/ipv4/cipso_ipv4.c')
| -rw-r--r-- | net/ipv4/cipso_ipv4.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c index fb5d913f5815..23a968f754be 100644 --- a/net/ipv4/cipso_ipv4.c +++ b/net/ipv4/cipso_ipv4.c @@ -447,8 +447,22 @@ static struct cipso_v4_doi *cipso_v4_doi_search(u32 doi) */ int cipso_v4_doi_add(struct cipso_v4_doi *doi_def) { + u32 iter; + if (doi_def == NULL || doi_def->doi == CIPSO_V4_DOI_UNKNOWN) return -EINVAL; + for (iter = 0; iter < CIPSO_V4_TAG_MAXCNT; iter++) { + switch (doi_def->tags[iter]) { + case CIPSO_V4_TAG_RBITMAP: + break; + case CIPSO_V4_TAG_INVALID: + if (iter == 0) + return -EINVAL; + break; + default: + return -EINVAL; + } + } doi_def->valid = 1; INIT_RCU_HEAD(&doi_def->rcu); |