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authorJohn Johansen <john.johansen@canonical.com>2018-05-04 01:57:47 -0700
committerJohn Johansen <john.johansen@canonical.com>2018-05-08 08:34:08 -0700
commit52e7128ebbdd7b05ba8615efbe410e88a5925a1d (patch)
tree0fe567b5838aee30bc7d3a6306bdc92e4c75830d /security
parent3107e8cb9219cff359b93dde257c030b500e74b7 (diff)
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apparmor: fix '*seclen' is never less than zero
smatch warnings: security/apparmor/secid.c:162 apparmor_secid_to_secctx() warn: unsigned '*seclen' is never less than zero. vim +162 security/apparmor/secid.c 140 141 int apparmor_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 142 { 143 /* TODO: cache secctx and ref count so we don't have to recreate */ 144 struct aa_label *label = aa_secid_to_label(secid); 145 146 AA_BUG(!secdata); 147 AA_BUG(!seclen); 148 149 if (!label) 150 return -EINVAL; 151 152 if (secdata) 153 *seclen = aa_label_asxprint(secdata, root_ns, label, 154 FLAG_SHOW_MODE | FLAG_VIEW_SUBNS | 155 FLAG_HIDDEN_UNCONFINED | 156 FLAG_ABS_ROOT, GFP_ATOMIC); 157 else 158 *seclen = aa_label_snxprint(NULL, 0, root_ns, label, 159 FLAG_SHOW_MODE | FLAG_VIEW_SUBNS | 160 FLAG_HIDDEN_UNCONFINED | 161 FLAG_ABS_ROOT); > 162 if (*seclen < 0) 163 return -ENOMEM; 164 165 return 0; 166 } 167 Fixes: c092921219d2 ("apparmor: add support for mapping secids and using secctxes") Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security')
-rw-r--r--security/apparmor/secid.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/security/apparmor/secid.c b/security/apparmor/secid.c
index 502924853986..c2f0c1571156 100644
--- a/security/apparmor/secid.c
+++ b/security/apparmor/secid.c
@@ -142,6 +142,7 @@ int apparmor_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
{
/* TODO: cache secctx and ref count so we don't have to recreate */
struct aa_label *label = aa_secid_to_label(secid);
+ int len;
AA_BUG(!secdata);
AA_BUG(!seclen);
@@ -150,18 +151,19 @@ int apparmor_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
return -EINVAL;
if (secdata)
- *seclen = aa_label_asxprint(secdata, root_ns, label,
- FLAG_SHOW_MODE | FLAG_VIEW_SUBNS |
- FLAG_HIDDEN_UNCONFINED |
- FLAG_ABS_ROOT, GFP_ATOMIC);
+ len = aa_label_asxprint(secdata, root_ns, label,
+ FLAG_SHOW_MODE | FLAG_VIEW_SUBNS |
+ FLAG_HIDDEN_UNCONFINED | FLAG_ABS_ROOT,
+ GFP_ATOMIC);
else
- *seclen = aa_label_snxprint(NULL, 0, root_ns, label,
- FLAG_SHOW_MODE | FLAG_VIEW_SUBNS |
- FLAG_HIDDEN_UNCONFINED |
- FLAG_ABS_ROOT);
- if (*seclen < 0)
+ len = aa_label_snxprint(NULL, 0, root_ns, label,
+ FLAG_SHOW_MODE | FLAG_VIEW_SUBNS |
+ FLAG_HIDDEN_UNCONFINED | FLAG_ABS_ROOT);
+ if (len < 0)
return -ENOMEM;
+ *seclen = len;
+
return 0;
}