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   1 /*
   2  * security/tomoyo/tomoyo.h
   3  *
   4  * Implementation of the Domain-Based Mandatory Access Control.
   5  *
   6  * Copyright (C) 2005-2009  NTT DATA CORPORATION
   7  *
   8  * Version: 2.2.0   2009/04/01
   9  *
  10  */
  11
  12 #ifndef _SECURITY_TOMOYO_TOMOYO_H
  13 #define _SECURITY_TOMOYO_TOMOYO_H
  14
  15 struct tomoyo_path_info;
  16 struct path;
  17 struct inode;
  18 struct linux_binprm;
  19 struct pt_regs;
  20 struct tomoyo_page_buffer;
  21
  22 int tomoyo_check_file_perm(struct tomoyo_domain_info *domain,
  23                            const char *filename, const u8 perm);
  24 int tomoyo_check_exec_perm(struct tomoyo_domain_info *domain,
  25                            const struct tomoyo_path_info *filename,
  26                            struct tomoyo_page_buffer *buf);
  27 int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
  28                                  struct path *path, const int flag);
  29 int tomoyo_check_1path_perm(struct tomoyo_domain_info *domain,
  30                             const u8 operation, struct path *path);
  31 int tomoyo_check_2path_perm(struct tomoyo_domain_info *domain,
  32                             const u8 operation, struct path *path1,
  33                             struct path *path2);
  34 int tomoyo_check_rewrite_permission(struct tomoyo_domain_info *domain,
  35                                     struct file *filp);
  36 int tomoyo_find_next_domain(struct linux_binprm *bprm,
  37                             struct tomoyo_domain_info **next_domain);
  38
  39 /* Index numbers for Access Controls. */
  40
  41 #define TOMOYO_TYPE_SINGLE_PATH_ACL                 0
  42 #define TOMOYO_TYPE_DOUBLE_PATH_ACL                 1
  43
  44 /* Index numbers for File Controls. */
  45
  46 /*
  47  * TYPE_READ_WRITE_ACL is special. TYPE_READ_WRITE_ACL is automatically set
  48  * if both TYPE_READ_ACL and TYPE_WRITE_ACL are set. Both TYPE_READ_ACL and
  49  * TYPE_WRITE_ACL are automatically set if TYPE_READ_WRITE_ACL is set.
  50  * TYPE_READ_WRITE_ACL is automatically cleared if either TYPE_READ_ACL or
  51  * TYPE_WRITE_ACL is cleared. Both TYPE_READ_ACL and TYPE_WRITE_ACL are
  52  * automatically cleared if TYPE_READ_WRITE_ACL is cleared.
  53  */
  54
  55 #define TOMOYO_TYPE_READ_WRITE_ACL    0
  56 #define TOMOYO_TYPE_EXECUTE_ACL       1
  57 #define TOMOYO_TYPE_READ_ACL          2
  58 #define TOMOYO_TYPE_WRITE_ACL         3
  59 #define TOMOYO_TYPE_CREATE_ACL        4
  60 #define TOMOYO_TYPE_UNLINK_ACL        5
  61 #define TOMOYO_TYPE_MKDIR_ACL         6
  62 #define TOMOYO_TYPE_RMDIR_ACL         7
  63 #define TOMOYO_TYPE_MKFIFO_ACL        8
  64 #define TOMOYO_TYPE_MKSOCK_ACL        9
  65 #define TOMOYO_TYPE_MKBLOCK_ACL      10
  66 #define TOMOYO_TYPE_MKCHAR_ACL       11
  67 #define TOMOYO_TYPE_TRUNCATE_ACL     12
  68 #define TOMOYO_TYPE_SYMLINK_ACL      13
  69 #define TOMOYO_TYPE_REWRITE_ACL      14
  70 #define TOMOYO_MAX_SINGLE_PATH_OPERATION 15
  71
  72 #define TOMOYO_TYPE_LINK_ACL         0
  73 #define TOMOYO_TYPE_RENAME_ACL       1
  74 #define TOMOYO_MAX_DOUBLE_PATH_OPERATION 2
  75
  76 #define TOMOYO_DOMAINPOLICY          0
  77 #define TOMOYO_EXCEPTIONPOLICY       1
  78 #define TOMOYO_DOMAIN_STATUS         2
  79 #define TOMOYO_PROCESS_STATUS        3
  80 #define TOMOYO_MEMINFO               4
  81 #define TOMOYO_SELFDOMAIN            5
  82 #define TOMOYO_VERSION               6
  83 #define TOMOYO_PROFILE               7
  84 #define TOMOYO_MANAGER               8
  85
  86 extern struct tomoyo_domain_info tomoyo_kernel_domain;
  87
  88 static inline struct tomoyo_domain_info *tomoyo_domain(void)
  89 {
  90         return current_cred()->security;
  91 }
  92
  93 /* Caller holds tasklist_lock spinlock. */
  94 static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
  95                                                             *task)
  96 {
  97         /***** CRITICAL SECTION START *****/
  98         const struct cred *cred = get_task_cred(task);
  99         struct tomoyo_domain_info *domain = cred->security;
 100
 101         put_cred(cred);
 102         return domain;
 103         /***** CRITICAL SECTION END *****/
 104 }
 105
 106 #endif /* !defined(_SECURITY_TOMOYO_TOMOYO_H) */