[PATCH 03/46] selinux: Improve size determinations in four functions

SF Markus Elfring
2017-01-15T15:00:04Z

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 14 Jan 2017 11:22:12 +0100

Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
security/selinux/ss/conditional.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/security/selinux/ss/conditional.c b/security/selinux/ss/conditional.c
index 4a3bf29f7565..771c96afe1d5 100644
--- a/security/selinux/ss/conditional.c
+++ b/security/selinux/ss/conditional.c
@@ -227,7 +227,7 @@ int cond_read_bool(struct policydb *p, struct hashtab *h, void *fp)
u32 len;
int rc;

- booldatum = kzalloc(sizeof(struct cond_bool_datum), GFP_KERNEL);
+ booldatum = kzalloc(sizeof(*booldatum), GFP_KERNEL);
if (!booldatum)
return -ENOMEM;

@@ -332,7 +332,7 @@ static int cond_insertf(struct avtab *a, struct avtab_key *k, struct avtab_datum
goto err;
}

- list = kzalloc(sizeof(struct cond_av_list), GFP_KERNEL);
+ list = kzalloc(sizeof(*list), GFP_KERNEL);
if (!list) {
rc = -ENOMEM;
goto err;
@@ -421,7 +421,7 @@ static int cond_read_node(struct policydb *p, struct cond_node *node, void *fp)
goto err;

rc = -ENOMEM;
- expr = kzalloc(sizeof(struct cond_expr), GFP_KERNEL);
+ expr = kzalloc(sizeof(*expr), GFP_KERNEL);
if (!expr)
goto err;

@@ -472,7 +472,7 @@ int cond_read_list(struct policydb *p, void *fp)

for (i = 0; i < len; i++) {
rc = -ENOMEM;
- node = kzalloc(sizeof(struct cond_node), GFP_KERNEL);
+ node = kzalloc(sizeof(*node), GFP_KERNEL);
if (!node)
goto err;

--
2.11.0