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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  smackfs: check for allocation failures in smk_set_access()
This commit is contained in:
Linus Torvalds 2008-12-28 15:15:08 -08:00
parent 96faec945f 54d2f649a6
commit d05a788f22
1 changed files with 16 additions and 4 deletions
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20
security/smack/smackfs.c
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@ -185,11 +185,15 @@ static int smk_open_load(struct inode *inode, struct file *file)
* the subject/object pair and replaces the access that was
* there. If the pair isn't found add it with the specified
* access.
*
* Returns 0 if nothing goes wrong or -ENOMEM if it fails
* during the allocation of the new pair to add.
*/
static void smk_set_access(struct smack_rule *srp)
static int smk_set_access(struct smack_rule *srp)
{
struct smk_list_entry *sp;
struct smk_list_entry *newp;
int ret = 0;
mutex_lock(&smack_list_lock);
@ -202,14 +206,20 @@ static void smk_set_access(struct smack_rule *srp)
if (sp == NULL) {
newp = kzalloc(sizeof(struct smk_list_entry), GFP_KERNEL);
if (newp == NULL) {
ret = -ENOMEM;
goto out;
}
newp->smk_rule = *srp;
newp->smk_next = smack_list;
smack_list = newp;
}
out:
mutex_unlock(&smack_list_lock);
return;
return ret;
}
/**
@ -309,8 +319,10 @@ static ssize_t smk_write_load(struct file *file, const char __user *buf,
goto out;
}
smk_set_access(&rule);
rc = count;
rc = smk_set_access(&rule);
if (!rc)
rc = count;
out:
kfree(data);