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Smack: prevent revoke-subject from failing when unseen label is written to it

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Special file /smack/revoke-subject will silently accept labels that are not
present on the subject label list. Nothing has to be done for such labels,
as there are no rules for them to revoke.

Targeted for git://git.gitorious.org/smack-next/kernel.git

Signed-off-by: Rafal Krypa <r.krypa@samsung.com>
This commit is contained in:
Rafal Krypa 2012-11-27 16:28:11 +01:00 committed by Casey Schaufler
parent 921f3ac4c3
commit d15d9fad16
1 changed files with 1 additions and 3 deletions
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4
security/smack/smackfs.c
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@ -2035,10 +2035,8 @@ static ssize_t smk_write_revoke_subj(struct file *file, const char __user *buf,
}
skp = smk_find_entry(cp);
if (skp == NULL) {
rc = -EINVAL;
if (skp == NULL)
goto free_out;
}
rule_list = &skp->smk_rules;
rule_lock = &skp->smk_rules_lock;