security: remove dead hook acct

Unused hook.  Remove.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>

4 files changed, 5 insertions, 40 deletions

diff --git a/include/linux/security.h b/include/linux/security.h
index ac536eedec90..d670c9a3ec2b 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -1254,13 +1254,6 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
  *      @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
- *      accounting is being enabled, then @file refers to the open file used to
- *      store accounting records.  If accounting is being disabled, then @file
- *      is NULL.
- *      @file contains the file structure for the accounting file (may be NULL).
- *      Return 0 if permission is granted.
  * @sysctl:
  *      Check permission before accessing the @table sysctl variable in the
  *      manner specified by @op.
@@ -1383,7 +1376,6 @@ struct security_operations {
                        const kernel_cap_t *permitted);
         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);
         int (*quota_on) (struct dentry *dentry);
@@ -1665,7 +1657,6 @@ int security_capset(struct cred *new, const struct cred *old,
 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);
 int security_quota_on(struct dentry *dentry);
@@ -1883,11 +1874,6 @@ int security_real_capable_noaudit(struct task_struct *tsk, int cap)
         return ret;
 }
 
-static inline int security_acct(struct file *file)
-{
-        return 0;
-}
-
 static inline int security_sysctl(struct ctl_table *table, int op)
 {
         return 0;
diff --git a/kernel/acct.c b/kernel/acct.c
index 24f8c81fc48d..9e53bb2acfff 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -216,7 +216,6 @@ static int acct_on(char *name)
 {
         struct file *file;
         struct vfsmount *mnt;
-        int error;
         struct pid_namespace *ns;
         struct bsd_acct_struct *acct = NULL;
 
@@ -244,13 +243,6 @@ static int acct_on(char *name)
                 }
         }
 
-        error = security_acct(file);
-        if (error) {
-                kfree(acct);
-                filp_close(file, NULL);
-                return error;
-        }
-
         spin_lock(&acct_lock);
         if (ns->bacct == NULL) {
                 ns->bacct = acct;
@@ -281,7 +273,7 @@ static int acct_on(char *name)
  */
 SYSCALL_DEFINE1(acct, const char __user *, name)
 {
-        int error;
+        int error = 0;
 
         if (!capable(CAP_SYS_PACCT))
                 return -EPERM;
@@ -299,13 +291,11 @@ SYSCALL_DEFINE1(acct, const char __user *, name)
                 if (acct == NULL)
                         return 0;
 
-                error = security_acct(NULL);
-                if (!error) {
-                        spin_lock(&acct_lock);
-                        acct_file_reopen(acct, NULL, NULL);
-                        spin_unlock(&acct_lock);
-                }
+                spin_lock(&acct_lock);
+                acct_file_reopen(acct, NULL, NULL);
+                spin_unlock(&acct_lock);
         }
+
         return error;
 }
 
diff --git a/security/capability.c b/security/capability.c
index 8cc2b8f3b166..7f093d573ede 100644
--- a/security/capability.c
+++ b/security/capability.c
@@ -12,11 +12,6 @@
 
 #include <linux/security.h>
 
-static int cap_acct(struct file *file)
-{
-        return 0;
-}
-
 static int cap_sysctl(ctl_table *table, int op)
 {
         return 0;
@@ -865,7 +860,6 @@ void security_fixup_ops(struct security_operations *ops)
         set_to_cap_if_null(ops, ptrace_traceme);
         set_to_cap_if_null(ops, capget);
         set_to_cap_if_null(ops, capset);
-        set_to_cap_if_null(ops, acct);
         set_to_cap_if_null(ops, capable);
         set_to_cap_if_null(ops, quotactl);
         set_to_cap_if_null(ops, quota_on);
diff --git a/security/security.c b/security/security.c
index 490f77753b2d..8585019a1a59 100644
--- a/security/security.c
+++ b/security/security.c
@@ -190,11 +190,6 @@ int security_real_capable_noaudit(struct task_struct *tsk, int cap)
         return ret;
 }
 
-int security_acct(struct file *file)
-{
-        return security_ops->acct(file);
-}
-
 int security_sysctl(struct ctl_table *table, int op)
 {
         return security_ops->sysctl(table, op);