From 31cad4f622b2ec2b7911a136fb8d05714534d23d Mon Sep 17 00:00:00 2001 From: Rafal Krypa Date: Mon, 9 Jul 2012 19:36:34 +0200 Subject: [PATCH] Smack: don't show empty rules when /smack/load or /smack/load2 is read This patch removes empty rules (i.e. with access set to '-') from the rule list presented to user space. Smack by design never removes labels nor rules from its lists. Access for a rule may be set to '-' to effectively disable it. Such rules would show up in the listing generated when /smack/load or /smack/load2 is read. This may cause clutter if many rules were disabled. As a rule with access set to '-' is equivalent to no rule at all, they may be safely hidden from the listing. Targeted for git://git.gitorious.org/smack-next/kernel.git Signed-off-by: Rafal Krypa Signed-off-by: Casey Schaufler --- security/smack/smackfs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c index 29b760d..d31e6d9 100644 --- a/security/smack/smackfs.c +++ b/security/smack/smackfs.c @@ -518,6 +518,9 @@ static void smk_rule_show(struct seq_file *s, struct smack_rule *srp, int max) if (strlen(srp->smk_subject) >= max || strlen(srp->smk_object) >= max) return; + if (srp->smk_access == 0) + return; + seq_printf(s, "%s %s", srp->smk_subject, srp->smk_object); seq_putc(s, ' '); @@ -532,8 +535,6 @@ static void smk_rule_show(struct seq_file *s, struct smack_rule *srp, int max) seq_putc(s, 'a'); if (srp->smk_access & MAY_TRANSMUTE) seq_putc(s, 't'); - if (srp->smk_access == 0) - seq_putc(s, '-'); seq_putc(s, '\n'); } -- 2.7.4