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ima: fix cred sparse warning 

Fix ima_policy.c sparse "warning: dereference of noderef expression"
message, by accessing cred->uid using current_cred().

Changelog v1:
- Change __cred to just cred (based on David Howell's comment)

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Mimi Zohar 2012-01-17 22:11:28 -05:00 committed by James Morris
parent 4bf1924c00
commit 3db59dd933
1 changed files with 2 additions and 1 deletions
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3
security/integrity/ima/ima_policy.c
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@ -99,6 +99,7 @@ static bool ima_match_rules(struct ima_measure_rule_entry *rule,
struct inode *inode, enum ima_hooks func, int mask) struct inode *inode, enum ima_hooks func, int mask)
{ {
struct task_struct *tsk = current; struct task_struct *tsk = current;
const struct cred *cred = current_cred();
int i; int i;
if ((rule->flags & IMA_FUNC) && rule->func != func) if ((rule->flags & IMA_FUNC) && rule->func != func)
@ -108,7 +109,7 @@ static bool ima_match_rules(struct ima_measure_rule_entry *rule,
if ((rule->flags & IMA_FSMAGIC) if ((rule->flags & IMA_FSMAGIC)
&& rule->fsmagic != inode->i_sb->s_magic) && rule->fsmagic != inode->i_sb->s_magic)
return false; return false;
if ((rule->flags & IMA_UID) && rule->uid != tsk->cred->uid) if ((rule->flags & IMA_UID) && rule->uid != cred->uid)
return false; return false;
for (i = 0; i < MAX_LSM_RULES; i++) { for (i = 0; i < MAX_LSM_RULES; i++) {
int rc = 0; int rc = 0;