/* * Linux Security Module interfaces * * Copyright (C) 2001 WireX Communications, Inc <[email protected]> * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> * Copyright (C) 2001 James Morris <[email protected]> * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) * Copyright (C) 2015 Intel Corporation. * Copyright (C) 2015 Casey Schaufler <[email protected]> * Copyright (C) 2016 Mellanox Techonologies * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * Due to this file being licensed under the GPL there is controversy over * whether this permits you to write a module that #includes this file * without placing your module under the GPL. Please consult a lawyer for * advice before doing this. * */ #ifndef __LINUX_LSM_HOOKS_H #define __LINUX_LSM_HOOKS_H #include <uapi/linux/lsm.h> #include <linux/security.h> #include <linux/init.h> #include <linux/rculist.h> #include <linux/xattr.h> security_list_options; struct security_hook_heads { … } __randomize_layout; /** * struct lsm_id - Identify a Linux Security Module. * @lsm: name of the LSM, must be approved by the LSM maintainers * @id: LSM ID number from uapi/linux/lsm.h * * Contains the information that identifies the LSM. */ struct lsm_id { … }; /* * Security module hook list structure. * For use with generic list macros for common operations. */ struct security_hook_list { … } __randomize_layout; /* * Security blob size or offset data. */ struct lsm_blob_sizes { … }; /** * lsm_get_xattr_slot - Return the next available slot and increment the index * @xattrs: array storing LSM-provided xattrs * @xattr_count: number of already stored xattrs (updated) * * Retrieve the first available slot in the @xattrs array to fill with an xattr, * and increment @xattr_count. * * Return: The slot to fill in @xattrs if non-NULL, NULL otherwise. */ static inline struct xattr *lsm_get_xattr_slot(struct xattr *xattrs, int *xattr_count) { … } /* * LSM_RET_VOID is used as the default value in LSM_HOOK definitions for void * LSM hooks (in include/linux/lsm_hook_defs.h). */ #define LSM_RET_VOID … /* * Initializing a security_hook_list structure takes * up a lot of space in a source file. This macro takes * care of the common case and reduces the amount of * text involved. */ #define LSM_HOOK_INIT(HEAD, HOOK) … extern struct security_hook_heads security_hook_heads; extern char *lsm_names; extern void security_add_hooks(struct security_hook_list *hooks, int count, const struct lsm_id *lsmid); #define LSM_FLAG_LEGACY_MAJOR … #define LSM_FLAG_EXCLUSIVE … enum lsm_order { … }; struct lsm_info { … }; extern struct lsm_info __start_lsm_info[], __end_lsm_info[]; extern struct lsm_info __start_early_lsm_info[], __end_early_lsm_info[]; #define DEFINE_LSM(lsm) … #define DEFINE_EARLY_LSM(lsm) … extern int lsm_inode_alloc(struct inode *inode); #endif /* ! __LINUX_LSM_HOOKS_H */
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