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Diffstat (limited to 'security/smack/smack_lsm.c')
-rw-r--r--security/smack/smack_lsm.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 934dabe150fa..81fb4c1631e9 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -421,6 +421,7 @@ static int smk_ptrace_rule_check(struct task_struct *tracer,
struct smk_audit_info ad, *saip = NULL;
struct task_smack *tsp;
struct smack_known *tracer_known;
+ const struct cred *tracercred;
if ((mode & PTRACE_MODE_NOAUDIT) == 0) {
smk_ad_init(&ad, func, LSM_AUDIT_DATA_TASK);
@@ -429,7 +430,8 @@ static int smk_ptrace_rule_check(struct task_struct *tracer,
}
rcu_read_lock();
- tsp = __task_cred(tracer)->security;
+ tracercred = __task_cred(tracer);
+ tsp = tracercred->security;
tracer_known = smk_of_task(tsp);
if ((mode & PTRACE_MODE_ATTACH) &&
@@ -439,7 +441,7 @@ static int smk_ptrace_rule_check(struct task_struct *tracer,
rc = 0;
else if (smack_ptrace_rule == SMACK_PTRACE_DRACONIAN)
rc = -EACCES;
- else if (capable(CAP_SYS_PTRACE))
+ else if (smack_privileged_cred(CAP_SYS_PTRACE, tracercred))
rc = 0;
else
rc = -EACCES;
@@ -1841,6 +1843,7 @@ static int smack_file_send_sigiotask(struct task_struct *tsk,
{
struct smack_known *skp;
struct smack_known *tkp = smk_of_task(tsk->cred->security);
+ const struct cred *tcred;
struct file *file;
int rc;
struct smk_audit_info ad;
@@ -1854,8 +1857,12 @@ static int smack_file_send_sigiotask(struct task_struct *tsk,
skp = file->f_security;
rc = smk_access(skp, tkp, MAY_DELIVER, NULL);
rc = smk_bu_note("sigiotask", skp, tkp, MAY_DELIVER, rc);
- if (rc != 0 && has_capability(tsk, CAP_MAC_OVERRIDE))
+
+ rcu_read_lock();
+ tcred = __task_cred(tsk);
+ if (rc != 0 && smack_privileged_cred(CAP_MAC_OVERRIDE, tcred))
rc = 0;
+ rcu_read_unlock();
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
smk_ad_setfield_u_tsk(&ad, tsk);
@@ -3467,7 +3474,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
*/
final = &smack_known_star;
/*
- * No break.
+ * Fall through.
*
* If a smack value has been set we want to use it,
* but since tmpfs isn't giving us the opportunity