X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;ds=sidebyside;f=security%2Fsecurity.c;h=dca37381e2a7122ecee1446b09da8e2fd138beee;hb=1cdcbec1a3372c0c49c59d292e708fd07b509f18;hp=2c0a5876b939ef0e036f487ca199448fb13afea4;hpb=65fc7668006b537f7ae8451990c0ed9ec882544e;p=safe%2Fjmp%2Flinux-2.6

diff --git a/security/security.c b/security/security.c
index 2c0a587..dca3738 100644
--- a/security/security.c
+++ b/security/security.c
@@ -20,8 +20,8 @@
 /* Boot-time LSM user choice */
 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1];
 
-/* things that live in dummy.c */
-extern struct security_operations dummy_security_ops;
+/* things that live in capability.c */
+extern struct security_operations default_security_ops;
 extern void security_fixup_ops(struct security_operations *ops);
 
 struct security_operations *security_ops;	/* Initialized to NULL */
@@ -57,13 +57,8 @@ int __init security_init(void)
 {
 	printk(KERN_INFO "Security Framework initialized\n");
 
-	if (verify(&dummy_security_ops)) {
-		printk(KERN_ERR "%s could not verify "
-		       "dummy_security_ops structure.\n", __func__);
-		return -EIO;
-	}
-
-	security_ops = &dummy_security_ops;
+	security_fixup_ops(&default_security_ops);
+	security_ops = &default_security_ops;
 	do_security_initcalls();
 
 	return 0;
@@ -87,8 +82,8 @@ __setup("security=", choose_lsm);
  *
  * Return true if:
  *	-The passed LSM is the one chosen by user at boot time,
- *	-or user didsn't specify a specific LSM and we're the first to ask
- *	 for registeration permissoin,
+ *	-or user didn't specify a specific LSM and we're the first to ask
+ *	 for registration permission,
  *	-or the passed LSM is currently loaded.
  * Otherwise, return false.
  */
@@ -106,13 +101,13 @@ int __init security_module_enable(struct security_operations *ops)
  * register_security - registers a security framework with the kernel
  * @ops: a pointer to the struct security_options that is to be registered
  *
- * This function is to allow a security module to register itself with the
+ * This function allows a security module to register itself with the
  * kernel security subsystem.  Some rudimentary checking is done on the @ops
  * value passed to this function. You'll need to check first if your LSM
  * is allowed to register its @ops by calling security_module_enable(@ops).
  *
  * If there is already a security module registered with the kernel,
- * an error will be returned.  Otherwise 0 is returned on success.
+ * an error will be returned.  Otherwise %0 is returned on success.
  */
 int register_security(struct security_operations *ops)
 {
@@ -122,7 +117,7 @@ int register_security(struct security_operations *ops)
 		return -EINVAL;
 	}
 
-	if (security_ops != &dummy_security_ops)
+	if (security_ops != &default_security_ops)
 		return -EAGAIN;
 
 	security_ops = ops;
@@ -130,41 +125,16 @@ int register_security(struct security_operations *ops)
 	return 0;
 }
 
-/**
- * mod_reg_security - allows security modules to be "stacked"
- * @name: a pointer to a string with the name of the security_options to be registered
- * @ops: a pointer to the struct security_options that is to be registered
- *
- * This function allows security modules to be stacked if the currently loaded
- * security module allows this to happen.  It passes the @name and @ops to the
- * register_security function of the currently loaded security module.
- *
- * The return value depends on the currently loaded security module, with 0 as
- * success.
- */
-int mod_reg_security(const char *name, struct security_operations *ops)
-{
-	if (verify(ops)) {
-		printk(KERN_INFO "%s could not verify "
-		       "security operations.\n", __func__);
-		return -EINVAL;
-	}
-
-	if (ops == security_ops) {
-		printk(KERN_INFO "%s security operations "
-		       "already registered.\n", __func__);
-		return -EINVAL;
-	}
+/* Security operations */
 
-	return security_ops->register_security(name, ops);
+int security_ptrace_may_access(struct task_struct *child, unsigned int mode)
+{
+	return security_ops->ptrace_may_access(child, mode);
 }
 
-/* Security operations */
-
-int security_ptrace(struct task_struct *parent, struct task_struct *child,
-		    unsigned int mode)
+int security_ptrace_traceme(struct task_struct *parent)
 {
-	return security_ops->ptrace(parent, child, mode);
+	return security_ops->ptrace_traceme(parent);
 }
 
 int security_capget(struct task_struct *target,
@@ -175,25 +145,28 @@ int security_capget(struct task_struct *target,
 	return security_ops->capget(target, effective, inheritable, permitted);
 }
 
-int security_capset_check(struct task_struct *target,
-			   kernel_cap_t *effective,
-			   kernel_cap_t *inheritable,
-			   kernel_cap_t *permitted)
+int security_capset_check(kernel_cap_t *effective,
+			  kernel_cap_t *inheritable,
+			  kernel_cap_t *permitted)
 {
-	return security_ops->capset_check(target, effective, inheritable, permitted);
+	return security_ops->capset_check(effective, inheritable, permitted);
 }
 
-void security_capset_set(struct task_struct *target,
-			  kernel_cap_t *effective,
-			  kernel_cap_t *inheritable,
-			  kernel_cap_t *permitted)
+void security_capset_set(kernel_cap_t *effective,
+			 kernel_cap_t *inheritable,
+			 kernel_cap_t *permitted)
 {
-	security_ops->capset_set(target, effective, inheritable, permitted);
+	security_ops->capset_set(effective, inheritable, permitted);
 }
 
 int security_capable(struct task_struct *tsk, int cap)
 {
-	return security_ops->capable(tsk, cap);
+	return security_ops->capable(tsk, cap, SECURITY_CAP_AUDIT);
+}
+
+int security_capable_noaudit(struct task_struct *tsk, int cap)
+{
+	return security_ops->capable(tsk, cap, SECURITY_CAP_NOAUDIT);
 }
 
 int security_acct(struct file *file)
@@ -228,14 +201,23 @@ int security_settime(struct timespec *ts, struct timezone *tz)
 
 int security_vm_enough_memory(long pages)
 {
+	WARN_ON(current->mm == NULL);
 	return security_ops->vm_enough_memory(current->mm, pages);
 }
 
 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 {
+	WARN_ON(mm == NULL);
 	return security_ops->vm_enough_memory(mm, pages);
 }
 
+int security_vm_enough_memory_kern(long pages)
+{
+	/* If current->mm is a kernel thread then we will pass NULL,
+	   for this specific case that is fine */
+	return security_ops->vm_enough_memory(current->mm, pages);
+}
+
 int security_bprm_alloc(struct linux_binprm *bprm)
 {
 	return security_ops->bprm_alloc_security(bprm);
@@ -292,6 +274,11 @@ int security_sb_kern_mount(struct super_block *sb, void *data)
 	return security_ops->sb_kern_mount(sb, data);
 }
 
+int security_sb_show_options(struct seq_file *m, struct super_block *sb)
+{
+	return security_ops->sb_show_options(m, sb);
+}
+
 int security_sb_statfs(struct dentry *dentry)
 {
 	return security_ops->sb_statfs(dentry);
@@ -343,12 +330,6 @@ void security_sb_post_pivotroot(struct path *old_path, struct path *new_path)
 	security_ops->sb_post_pivotroot(old_path, new_path);
 }
 
-int security_sb_get_mnt_opts(const struct super_block *sb,
-				struct security_mnt_opts *opts)
-{
-	return security_ops->sb_get_mnt_opts(sb, opts);
-}
-
 int security_sb_set_mnt_opts(struct super_block *sb,
 				struct security_mnt_opts *opts)
 {
@@ -464,11 +445,11 @@ int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return security_ops->inode_follow_link(dentry, nd);
 }
 
-int security_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
+int security_inode_permission(struct inode *inode, int mask)
 {
 	if (unlikely(IS_PRIVATE(inode)))
 		return 0;
-	return security_ops->inode_permission(inode, mask, nd);
+	return security_ops->inode_permission(inode, mask);
 }
 
 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
@@ -477,6 +458,7 @@ int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 		return 0;
 	return security_ops->inode_setattr(dentry, attr);
 }
+EXPORT_SYMBOL_GPL(security_inode_setattr);
 
 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 {