*/
extern int cap_capable(struct task_struct *tsk, int cap);
extern int cap_settime(struct timespec *ts, struct timezone *tz);
-extern int cap_ptrace(struct task_struct *parent, struct task_struct *child,
- unsigned int mode);
+extern int cap_ptrace_may_access(struct task_struct *child, unsigned int mode);
+extern int cap_ptrace_traceme(struct task_struct *parent);
extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
extern int cap_capset_check(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
extern void cap_capset_set(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
#define LSM_SETID_FS 8
/* forward declares to avoid warnings */
-struct nfsctl_arg;
struct sched_param;
-struct swap_info_struct;
struct request_sock;
/* bprm_apply_creds unsafe reasons */
* @alter contains the flag indicating whether changes are to be made.
* Return 0 if permission is granted.
*
- * @ptrace:
- * Check permission before allowing the @parent process to trace the
+ * @ptrace_may_access:
+ * Check permission before allowing the current process to trace the
* @child process.
* Security modules may also want to perform a process tracing check
* during an execve in the set_security or apply_creds hooks of
* binprm_security_ops if the process is being traced and its security
* attributes would be changed by the execve.
- * @parent contains the task_struct structure for parent process.
- * @child contains the task_struct structure for child process.
+ * @child contains the task_struct structure for the target process.
* @mode contains the PTRACE_MODE flags indicating the form of access.
* Return 0 if permission is granted.
+ * @ptrace_traceme:
+ * Check that the @parent process has sufficient permission to trace the
+ * current process before allowing the current process to present itself
+ * to the @parent process for tracing.
+ * The parent process will still have to undergo the ptrace_may_access
+ * checks before it is allowed to trace this one.
+ * @parent contains the task_struct structure for debugger process.
+ * Return 0 if permission is granted.
* @capget:
* Get the @effective, @inheritable, and @permitted capability sets for
* the @target process. The hook may also perform permission checking to
* @pages contains the number of pages.
* Return 0 if permission is granted.
*
- * @register_security:
- * allow module stacking.
- * @name contains the name of the security module being stacked.
- * @ops contains a pointer to the struct security_operations of the module to stack.
- *
* @secid_to_secctx:
* Convert secid to security context.
* @secid contains the security ID.
struct security_operations {
char name[SECURITY_NAME_MAX + 1];
- int (*ptrace) (struct task_struct *parent, struct task_struct *child,
- unsigned int mode);
+ int (*ptrace_may_access) (struct task_struct *child, unsigned int mode);
+ int (*ptrace_traceme) (struct task_struct *parent);
int (*capget) (struct task_struct *target,
kernel_cap_t *effective,
kernel_cap_t *inheritable, kernel_cap_t *permitted);
struct inode *new_dir, struct dentry *new_dentry);
int (*inode_readlink) (struct dentry *dentry);
int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
- int (*inode_permission) (struct inode *inode, int mask, struct nameidata *nd);
+ int (*inode_permission) (struct inode *inode, int mask);
int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
void (*inode_delete) (struct inode *inode);
int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
int (*netlink_recv) (struct sk_buff *skb, int cap);
- /* allow module stacking */
- int (*register_security) (const char *name,
- struct security_operations *ops);
-
void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
int (*getprocattr) (struct task_struct *p, char *name, char **value);
extern int security_init(void);
extern int security_module_enable(struct security_operations *ops);
extern int register_security(struct security_operations *ops);
-extern int mod_reg_security(const char *name, struct security_operations *ops);
-extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
- struct dentry *parent, void *data,
- const struct file_operations *fops);
-extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
-extern void securityfs_remove(struct dentry *dentry);
/* Security operations */
-int security_ptrace(struct task_struct *parent, struct task_struct *child,
- unsigned int mode);
+int security_ptrace_may_access(struct task_struct *child, unsigned int mode);
+int security_ptrace_traceme(struct task_struct *parent);
int security_capget(struct task_struct *target,
kernel_cap_t *effective,
kernel_cap_t *inheritable,
struct inode *new_dir, struct dentry *new_dentry);
int security_inode_readlink(struct dentry *dentry);
int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
-int security_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
+int security_inode_permission(struct inode *inode, int mask);
int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
void security_inode_delete(struct inode *inode);
return 0;
}
-static inline int security_ptrace(struct task_struct *parent,
- struct task_struct *child,
- unsigned int mode)
+static inline int security_ptrace_may_access(struct task_struct *child,
+ unsigned int mode)
+{
+ return cap_ptrace_may_access(child, mode);
+}
+
+static inline int security_ptrace_traceme(struct task_struct *parent)
{
- return cap_ptrace(parent, child, mode);
+ return cap_ptrace_traceme(parent);
}
static inline int security_capget(struct task_struct *target,
return 0;
}
-static inline int security_inode_permission(struct inode *inode, int mask,
- struct nameidata *nd)
+static inline int security_inode_permission(struct inode *inode, int mask)
{
return 0;
}
return cap_netlink_recv(skb, cap);
}
-static inline struct dentry *securityfs_create_dir(const char *name,
- struct dentry *parent)
-{
- return ERR_PTR(-ENODEV);
-}
-
-static inline struct dentry *securityfs_create_file(const char *name,
- mode_t mode,
- struct dentry *parent,
- void *data,
- const struct file_operations *fops)
-{
- return ERR_PTR(-ENODEV);
-}
-
-static inline void securityfs_remove(struct dentry *dentry)
-{
-}
-
static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
{
return -EOPNOTSUPP;
#endif /* CONFIG_SECURITY */
#endif /* CONFIG_AUDIT */
+#ifdef CONFIG_SECURITYFS
+
+extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
+ struct dentry *parent, void *data,
+ const struct file_operations *fops);
+extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
+extern void securityfs_remove(struct dentry *dentry);
+
+#else /* CONFIG_SECURITYFS */
+
+static inline struct dentry *securityfs_create_dir(const char *name,
+ struct dentry *parent)
+{
+ return ERR_PTR(-ENODEV);
+}
+
+static inline struct dentry *securityfs_create_file(const char *name,
+ mode_t mode,
+ struct dentry *parent,
+ void *data,
+ const struct file_operations *fops)
+{
+ return ERR_PTR(-ENODEV);
+}
+
+static inline void securityfs_remove(struct dentry *dentry)
+{}
+
+#endif
+
#endif /* ! __LINUX_SECURITY_H */