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-rw-r--r--include/linux/security.h41
1 files changed, 32 insertions, 9 deletions
diff --git a/include/linux/security.h b/include/linux/security.h
index b92b5e453f64..1f2ab6353c00 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -48,7 +48,8 @@ struct audit_krule;
* These functions are in security/capability.c and are used
* as the default capabilities functions
*/
-extern int cap_capable(struct task_struct *tsk, int cap, int audit);
+extern int cap_capable(struct task_struct *tsk, const struct cred *cred,
+ int cap, int audit);
extern int cap_settime(struct timespec *ts, struct timezone *tz);
extern int cap_ptrace_may_access(struct task_struct *child, unsigned int mode);
extern int cap_ptrace_traceme(struct task_struct *parent);
@@ -1251,9 +1252,12 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
* @permitted contains the permitted capability set.
* Return 0 and update @new if permission is granted.
* @capable:
- * Check whether the @tsk process has the @cap capability.
+ * Check whether the @tsk process has the @cap capability in the indicated
+ * credentials.
* @tsk contains the task_struct for the process.
+ * @cred contains the credentials to use.
* @cap contains the capability <include/linux/capability.h>.
+ * @audit: Whether to write an audit message or not
* Return 0 if the capability is granted for @tsk.
* @acct:
* Check permission before enabling or disabling process accounting. If
@@ -1346,7 +1350,8 @@ struct security_operations {
const kernel_cap_t *effective,
const kernel_cap_t *inheritable,
const kernel_cap_t *permitted);
- int (*capable) (struct task_struct *tsk, int cap, int audit);
+ int (*capable) (struct task_struct *tsk, const struct cred *cred,
+ int cap, int audit);
int (*acct) (struct file *file);
int (*sysctl) (struct ctl_table *table, int op);
int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
@@ -1628,8 +1633,9 @@ int security_capset(struct cred *new, const struct cred *old,
const kernel_cap_t *effective,
const kernel_cap_t *inheritable,
const kernel_cap_t *permitted);
-int security_capable(struct task_struct *tsk, int cap);
-int security_capable_noaudit(struct task_struct *tsk, int cap);
+int security_capable(int cap);
+int security_real_capable(struct task_struct *tsk, int cap);
+int security_real_capable_noaudit(struct task_struct *tsk, int cap);
int security_acct(struct file *file);
int security_sysctl(struct ctl_table *table, int op);
int security_quotactl(int cmds, int type, int id, struct super_block *sb);
@@ -1826,14 +1832,31 @@ static inline int security_capset(struct cred *new,
return cap_capset(new, old, effective, inheritable, permitted);
}
-static inline int security_capable(struct task_struct *tsk, int cap)
+static inline int security_capable(int cap)
{
- return cap_capable(tsk, cap, SECURITY_CAP_AUDIT);
+ return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT);
}
-static inline int security_capable_noaudit(struct task_struct *tsk, int cap)
+static inline int security_real_capable(struct task_struct *tsk, int cap)
{
- return cap_capable(tsk, cap, SECURITY_CAP_NOAUDIT);
+ int ret;
+
+ rcu_read_lock();
+ ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT);
+ rcu_read_unlock();
+ return ret;
+}
+
+static inline
+int security_real_capable_noaudit(struct task_struct *tsk, int cap)
+{
+ int ret;
+
+ rcu_read_lock();
+ ret = cap_capable(tsk, __task_cred(tsk), cap,
+ SECURITY_CAP_NOAUDIT);
+ rcu_read_unlock();
+ return ret;
}
static inline int security_acct(struct file *file)