diff options
| -rw-r--r-- | security/selinux/ss/avtab.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/security/selinux/ss/avtab.c b/security/selinux/ss/avtab.c index 6dcb6aa4db7f..2aee4c965c25 100644 --- a/security/selinux/ss/avtab.c +++ b/security/selinux/ss/avtab.c @@ -109,7 +109,7 @@ static int avtab_insert(struct avtab *h, struct avtab_key *key, struct avtab_dat struct avtab_node *prev, *cur, *newnode; u16 specified = key->specified & ~(AVTAB_ENABLED|AVTAB_ENABLED_OLD); - if (!h) + if (!h || !h->nslot) return -EINVAL; hvalue = avtab_hash(key, h->mask); @@ -154,7 +154,7 @@ avtab_insert_nonunique(struct avtab *h, struct avtab_key *key, struct avtab_datu struct avtab_node *prev, *cur; u16 specified = key->specified & ~(AVTAB_ENABLED|AVTAB_ENABLED_OLD); - if (!h) + if (!h || !h->nslot) return NULL; hvalue = avtab_hash(key, h->mask); for (prev = NULL, cur = h->htable[hvalue]; @@ -184,7 +184,7 @@ struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *key) struct avtab_node *cur; u16 specified = key->specified & ~(AVTAB_ENABLED|AVTAB_ENABLED_OLD); - if (!h) + if (!h || !h->nslot) return NULL; hvalue = avtab_hash(key, h->mask); @@ -220,7 +220,7 @@ avtab_search_node(struct avtab *h, struct avtab_key *key) struct avtab_node *cur; u16 specified = key->specified & ~(AVTAB_ENABLED|AVTAB_ENABLED_OLD); - if (!h) + if (!h || !h->nslot) return NULL; hvalue = avtab_hash(key, h->mask); @@ -295,6 +295,7 @@ void avtab_destroy(struct avtab *h) } kvfree(h->htable); h->htable = NULL; + h->nel = 0; h->nslot = 0; h->mask = 0; } @@ -303,14 +304,15 @@ void avtab_init(struct avtab *h) { h->htable = NULL; h->nel = 0; + h->nslot = 0; + h->mask = 0; } int avtab_alloc(struct avtab *h, u32 nrules) { - u32 mask = 0; u32 shift = 0; u32 work = nrules; - u32 nslot = 0; + u32 nslot; if (nrules == 0) goto avtab_alloc_out; @@ -324,16 +326,15 @@ int avtab_alloc(struct avtab *h, u32 nrules) nslot = 1 << shift; if (nslot > MAX_AVTAB_HASH_BUCKETS) nslot = MAX_AVTAB_HASH_BUCKETS; - mask = nslot - 1; h->htable = kvcalloc(nslot, sizeof(void *), GFP_KERNEL); if (!h->htable) return -ENOMEM; - avtab_alloc_out: - h->nel = 0; h->nslot = nslot; - h->mask = mask; + h->mask = nslot - 1; + +avtab_alloc_out: pr_debug("SELinux: %d avtab hash slots, %d rules.\n", h->nslot, nrules); return 0; |