diff options
| author | Rafal Krypa <r.krypa@samsung.com> | 2012-07-09 19:36:34 +0200 |
|---|---|---|
| committer | Casey Schaufler <casey@schaufler-ca.com> | 2012-07-13 15:49:24 -0700 |
| commit | 65ee7f45cf075adcdd6b6ef365f5a5507f1ea5c5 (patch) | |
| tree | f674119c2d4e6eb877bb283dce89bdafa0442fa4 /security | |
| parent | 3518721a8932b2a243f415c374aef020380efc9d (diff) | |
| download | lwn-65ee7f45cf075adcdd6b6ef365f5a5507f1ea5c5.tar.gz lwn-65ee7f45cf075adcdd6b6ef365f5a5507f1ea5c5.zip | |
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 <r.krypa@samsung.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/smack/smackfs.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c index 29b760d6b746..d31e6d957c21 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'); } |