at v2.6.16-rc2 101 kB view raw
1/* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> 5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> 7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * Due to this file being licensed under the GPL there is controversy over 16 * whether this permits you to write a module that #includes this file 17 * without placing your module under the GPL. Please consult a lawyer for 18 * advice before doing this. 19 * 20 */ 21 22#ifndef __LINUX_SECURITY_H 23#define __LINUX_SECURITY_H 24 25#include <linux/fs.h> 26#include <linux/binfmts.h> 27#include <linux/signal.h> 28#include <linux/resource.h> 29#include <linux/sem.h> 30#include <linux/shm.h> 31#include <linux/msg.h> 32#include <linux/sched.h> 33#include <linux/key.h> 34 35struct ctl_table; 36 37/* 38 * These functions are in security/capability.c and are used 39 * as the default capabilities functions 40 */ 41extern int cap_capable (struct task_struct *tsk, int cap); 42extern int cap_settime (struct timespec *ts, struct timezone *tz); 43extern int cap_ptrace (struct task_struct *parent, struct task_struct *child); 44extern int cap_capget (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 45extern int cap_capset_check (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 46extern void cap_capset_set (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 47extern int cap_bprm_set_security (struct linux_binprm *bprm); 48extern void cap_bprm_apply_creds (struct linux_binprm *bprm, int unsafe); 49extern int cap_bprm_secureexec(struct linux_binprm *bprm); 50extern int cap_inode_setxattr(struct dentry *dentry, char *name, void *value, size_t size, int flags); 51extern int cap_inode_removexattr(struct dentry *dentry, char *name); 52extern int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid, int flags); 53extern void cap_task_reparent_to_init (struct task_struct *p); 54extern int cap_syslog (int type); 55extern int cap_vm_enough_memory (long pages); 56 57struct msghdr; 58struct sk_buff; 59struct sock; 60struct sockaddr; 61struct socket; 62struct flowi; 63struct dst_entry; 64struct xfrm_selector; 65struct xfrm_policy; 66struct xfrm_state; 67struct xfrm_user_sec_ctx; 68 69extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb); 70extern int cap_netlink_recv(struct sk_buff *skb); 71 72/* 73 * Values used in the task_security_ops calls 74 */ 75/* setuid or setgid, id0 == uid or gid */ 76#define LSM_SETID_ID 1 77 78/* setreuid or setregid, id0 == real, id1 == eff */ 79#define LSM_SETID_RE 2 80 81/* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 82#define LSM_SETID_RES 4 83 84/* setfsuid or setfsgid, id0 == fsuid or fsgid */ 85#define LSM_SETID_FS 8 86 87/* forward declares to avoid warnings */ 88struct nfsctl_arg; 89struct sched_param; 90struct swap_info_struct; 91 92/* bprm_apply_creds unsafe reasons */ 93#define LSM_UNSAFE_SHARE 1 94#define LSM_UNSAFE_PTRACE 2 95#define LSM_UNSAFE_PTRACE_CAP 4 96 97#ifdef CONFIG_SECURITY 98 99/** 100 * struct security_operations - main security structure 101 * 102 * Security hooks for program execution operations. 103 * 104 * @bprm_alloc_security: 105 * Allocate and attach a security structure to the @bprm->security field. 106 * The security field is initialized to NULL when the bprm structure is 107 * allocated. 108 * @bprm contains the linux_binprm structure to be modified. 109 * Return 0 if operation was successful. 110 * @bprm_free_security: 111 * @bprm contains the linux_binprm structure to be modified. 112 * Deallocate and clear the @bprm->security field. 113 * @bprm_apply_creds: 114 * Compute and set the security attributes of a process being transformed 115 * by an execve operation based on the old attributes (current->security) 116 * and the information saved in @bprm->security by the set_security hook. 117 * Since this hook function (and its caller) are void, this hook can not 118 * return an error. However, it can leave the security attributes of the 119 * process unchanged if an access failure occurs at this point. 120 * bprm_apply_creds is called under task_lock. @unsafe indicates various 121 * reasons why it may be unsafe to change security state. 122 * @bprm contains the linux_binprm structure. 123 * @bprm_post_apply_creds: 124 * Runs after bprm_apply_creds with the task_lock dropped, so that 125 * functions which cannot be called safely under the task_lock can 126 * be used. This hook is a good place to perform state changes on 127 * the process such as closing open file descriptors to which access 128 * is no longer granted if the attributes were changed. 129 * Note that a security module might need to save state between 130 * bprm_apply_creds and bprm_post_apply_creds to store the decision 131 * on whether the process may proceed. 132 * @bprm contains the linux_binprm structure. 133 * @bprm_set_security: 134 * Save security information in the bprm->security field, typically based 135 * on information about the bprm->file, for later use by the apply_creds 136 * hook. This hook may also optionally check permissions (e.g. for 137 * transitions between security domains). 138 * This hook may be called multiple times during a single execve, e.g. for 139 * interpreters. The hook can tell whether it has already been called by 140 * checking to see if @bprm->security is non-NULL. If so, then the hook 141 * may decide either to retain the security information saved earlier or 142 * to replace it. 143 * @bprm contains the linux_binprm structure. 144 * Return 0 if the hook is successful and permission is granted. 145 * @bprm_check_security: 146 * This hook mediates the point when a search for a binary handler will 147 * begin. It allows a check the @bprm->security value which is set in 148 * the preceding set_security call. The primary difference from 149 * set_security is that the argv list and envp list are reliably 150 * available in @bprm. This hook may be called multiple times 151 * during a single execve; and in each pass set_security is called 152 * first. 153 * @bprm contains the linux_binprm structure. 154 * Return 0 if the hook is successful and permission is granted. 155 * @bprm_secureexec: 156 * Return a boolean value (0 or 1) indicating whether a "secure exec" 157 * is required. The flag is passed in the auxiliary table 158 * on the initial stack to the ELF interpreter to indicate whether libc 159 * should enable secure mode. 160 * @bprm contains the linux_binprm structure. 161 * 162 * Security hooks for filesystem operations. 163 * 164 * @sb_alloc_security: 165 * Allocate and attach a security structure to the sb->s_security field. 166 * The s_security field is initialized to NULL when the structure is 167 * allocated. 168 * @sb contains the super_block structure to be modified. 169 * Return 0 if operation was successful. 170 * @sb_free_security: 171 * Deallocate and clear the sb->s_security field. 172 * @sb contains the super_block structure to be modified. 173 * @sb_statfs: 174 * Check permission before obtaining filesystem statistics for the @sb 175 * filesystem. 176 * @sb contains the super_block structure for the filesystem. 177 * Return 0 if permission is granted. 178 * @sb_mount: 179 * Check permission before an object specified by @dev_name is mounted on 180 * the mount point named by @nd. For an ordinary mount, @dev_name 181 * identifies a device if the file system type requires a device. For a 182 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a 183 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the 184 * pathname of the object being mounted. 185 * @dev_name contains the name for object being mounted. 186 * @nd contains the nameidata structure for mount point object. 187 * @type contains the filesystem type. 188 * @flags contains the mount flags. 189 * @data contains the filesystem-specific data. 190 * Return 0 if permission is granted. 191 * @sb_copy_data: 192 * Allow mount option data to be copied prior to parsing by the filesystem, 193 * so that the security module can extract security-specific mount 194 * options cleanly (a filesystem may modify the data e.g. with strsep()). 195 * This also allows the original mount data to be stripped of security- 196 * specific options to avoid having to make filesystems aware of them. 197 * @type the type of filesystem being mounted. 198 * @orig the original mount data copied from userspace. 199 * @copy copied data which will be passed to the security module. 200 * Returns 0 if the copy was successful. 201 * @sb_check_sb: 202 * Check permission before the device with superblock @mnt->sb is mounted 203 * on the mount point named by @nd. 204 * @mnt contains the vfsmount for device being mounted. 205 * @nd contains the nameidata object for the mount point. 206 * Return 0 if permission is granted. 207 * @sb_umount: 208 * Check permission before the @mnt file system is unmounted. 209 * @mnt contains the mounted file system. 210 * @flags contains the unmount flags, e.g. MNT_FORCE. 211 * Return 0 if permission is granted. 212 * @sb_umount_close: 213 * Close any files in the @mnt mounted filesystem that are held open by 214 * the security module. This hook is called during an umount operation 215 * prior to checking whether the filesystem is still busy. 216 * @mnt contains the mounted filesystem. 217 * @sb_umount_busy: 218 * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening 219 * any files that were closed by umount_close. This hook is called during 220 * an umount operation if the umount fails after a call to the 221 * umount_close hook. 222 * @mnt contains the mounted filesystem. 223 * @sb_post_remount: 224 * Update the security module's state when a filesystem is remounted. 225 * This hook is only called if the remount was successful. 226 * @mnt contains the mounted file system. 227 * @flags contains the new filesystem flags. 228 * @data contains the filesystem-specific data. 229 * @sb_post_mountroot: 230 * Update the security module's state when the root filesystem is mounted. 231 * This hook is only called if the mount was successful. 232 * @sb_post_addmount: 233 * Update the security module's state when a filesystem is mounted. 234 * This hook is called any time a mount is successfully grafetd to 235 * the tree. 236 * @mnt contains the mounted filesystem. 237 * @mountpoint_nd contains the nameidata structure for the mount point. 238 * @sb_pivotroot: 239 * Check permission before pivoting the root filesystem. 240 * @old_nd contains the nameidata structure for the new location of the current root (put_old). 241 * @new_nd contains the nameidata structure for the new root (new_root). 242 * Return 0 if permission is granted. 243 * @sb_post_pivotroot: 244 * Update module state after a successful pivot. 245 * @old_nd contains the nameidata structure for the old root. 246 * @new_nd contains the nameidata structure for the new root. 247 * 248 * Security hooks for inode operations. 249 * 250 * @inode_alloc_security: 251 * Allocate and attach a security structure to @inode->i_security. The 252 * i_security field is initialized to NULL when the inode structure is 253 * allocated. 254 * @inode contains the inode structure. 255 * Return 0 if operation was successful. 256 * @inode_free_security: 257 * @inode contains the inode structure. 258 * Deallocate the inode security structure and set @inode->i_security to 259 * NULL. 260 * @inode_init_security: 261 * Obtain the security attribute name suffix and value to set on a newly 262 * created inode and set up the incore security field for the new inode. 263 * This hook is called by the fs code as part of the inode creation 264 * transaction and provides for atomic labeling of the inode, unlike 265 * the post_create/mkdir/... hooks called by the VFS. The hook function 266 * is expected to allocate the name and value via kmalloc, with the caller 267 * being responsible for calling kfree after using them. 268 * If the security module does not use security attributes or does 269 * not wish to put a security attribute on this particular inode, 270 * then it should return -EOPNOTSUPP to skip this processing. 271 * @inode contains the inode structure of the newly created inode. 272 * @dir contains the inode structure of the parent directory. 273 * @name will be set to the allocated name suffix (e.g. selinux). 274 * @value will be set to the allocated attribute value. 275 * @len will be set to the length of the value. 276 * Returns 0 if @name and @value have been successfully set, 277 * -EOPNOTSUPP if no security attribute is needed, or 278 * -ENOMEM on memory allocation failure. 279 * @inode_create: 280 * Check permission to create a regular file. 281 * @dir contains inode structure of the parent of the new file. 282 * @dentry contains the dentry structure for the file to be created. 283 * @mode contains the file mode of the file to be created. 284 * Return 0 if permission is granted. 285 * @inode_link: 286 * Check permission before creating a new hard link to a file. 287 * @old_dentry contains the dentry structure for an existing link to the file. 288 * @dir contains the inode structure of the parent directory of the new link. 289 * @new_dentry contains the dentry structure for the new link. 290 * Return 0 if permission is granted. 291 * @inode_unlink: 292 * Check the permission to remove a hard link to a file. 293 * @dir contains the inode structure of parent directory of the file. 294 * @dentry contains the dentry structure for file to be unlinked. 295 * Return 0 if permission is granted. 296 * @inode_symlink: 297 * Check the permission to create a symbolic link to a file. 298 * @dir contains the inode structure of parent directory of the symbolic link. 299 * @dentry contains the dentry structure of the symbolic link. 300 * @old_name contains the pathname of file. 301 * Return 0 if permission is granted. 302 * @inode_mkdir: 303 * Check permissions to create a new directory in the existing directory 304 * associated with inode strcture @dir. 305 * @dir containst the inode structure of parent of the directory to be created. 306 * @dentry contains the dentry structure of new directory. 307 * @mode contains the mode of new directory. 308 * Return 0 if permission is granted. 309 * @inode_rmdir: 310 * Check the permission to remove a directory. 311 * @dir contains the inode structure of parent of the directory to be removed. 312 * @dentry contains the dentry structure of directory to be removed. 313 * Return 0 if permission is granted. 314 * @inode_mknod: 315 * Check permissions when creating a special file (or a socket or a fifo 316 * file created via the mknod system call). Note that if mknod operation 317 * is being done for a regular file, then the create hook will be called 318 * and not this hook. 319 * @dir contains the inode structure of parent of the new file. 320 * @dentry contains the dentry structure of the new file. 321 * @mode contains the mode of the new file. 322 * @dev contains the the device number. 323 * Return 0 if permission is granted. 324 * @inode_rename: 325 * Check for permission to rename a file or directory. 326 * @old_dir contains the inode structure for parent of the old link. 327 * @old_dentry contains the dentry structure of the old link. 328 * @new_dir contains the inode structure for parent of the new link. 329 * @new_dentry contains the dentry structure of the new link. 330 * Return 0 if permission is granted. 331 * @inode_readlink: 332 * Check the permission to read the symbolic link. 333 * @dentry contains the dentry structure for the file link. 334 * Return 0 if permission is granted. 335 * @inode_follow_link: 336 * Check permission to follow a symbolic link when looking up a pathname. 337 * @dentry contains the dentry structure for the link. 338 * @nd contains the nameidata structure for the parent directory. 339 * Return 0 if permission is granted. 340 * @inode_permission: 341 * Check permission before accessing an inode. This hook is called by the 342 * existing Linux permission function, so a security module can use it to 343 * provide additional checking for existing Linux permission checks. 344 * Notice that this hook is called when a file is opened (as well as many 345 * other operations), whereas the file_security_ops permission hook is 346 * called when the actual read/write operations are performed. 347 * @inode contains the inode structure to check. 348 * @mask contains the permission mask. 349 * @nd contains the nameidata (may be NULL). 350 * Return 0 if permission is granted. 351 * @inode_setattr: 352 * Check permission before setting file attributes. Note that the kernel 353 * call to notify_change is performed from several locations, whenever 354 * file attributes change (such as when a file is truncated, chown/chmod 355 * operations, transferring disk quotas, etc). 356 * @dentry contains the dentry structure for the file. 357 * @attr is the iattr structure containing the new file attributes. 358 * Return 0 if permission is granted. 359 * @inode_getattr: 360 * Check permission before obtaining file attributes. 361 * @mnt is the vfsmount where the dentry was looked up 362 * @dentry contains the dentry structure for the file. 363 * Return 0 if permission is granted. 364 * @inode_delete: 365 * @inode contains the inode structure for deleted inode. 366 * This hook is called when a deleted inode is released (i.e. an inode 367 * with no hard links has its use count drop to zero). A security module 368 * can use this hook to release any persistent label associated with the 369 * inode. 370 * @inode_setxattr: 371 * Check permission before setting the extended attributes 372 * @value identified by @name for @dentry. 373 * Return 0 if permission is granted. 374 * @inode_post_setxattr: 375 * Update inode security field after successful setxattr operation. 376 * @value identified by @name for @dentry. 377 * @inode_getxattr: 378 * Check permission before obtaining the extended attributes 379 * identified by @name for @dentry. 380 * Return 0 if permission is granted. 381 * @inode_listxattr: 382 * Check permission before obtaining the list of extended attribute 383 * names for @dentry. 384 * Return 0 if permission is granted. 385 * @inode_removexattr: 386 * Check permission before removing the extended attribute 387 * identified by @name for @dentry. 388 * Return 0 if permission is granted. 389 * @inode_getsecurity: 390 * Copy the extended attribute representation of the security label 391 * associated with @name for @inode into @buffer. @buffer may be 392 * NULL to request the size of the buffer required. @size indicates 393 * the size of @buffer in bytes. Note that @name is the remainder 394 * of the attribute name after the security. prefix has been removed. 395 * @err is the return value from the preceding fs getxattr call, 396 * and can be used by the security module to determine whether it 397 * should try and canonicalize the attribute value. 398 * Return number of bytes used/required on success. 399 * @inode_setsecurity: 400 * Set the security label associated with @name for @inode from the 401 * extended attribute value @value. @size indicates the size of the 402 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0. 403 * Note that @name is the remainder of the attribute name after the 404 * security. prefix has been removed. 405 * Return 0 on success. 406 * @inode_listsecurity: 407 * Copy the extended attribute names for the security labels 408 * associated with @inode into @buffer. The maximum size of @buffer 409 * is specified by @buffer_size. @buffer may be NULL to request 410 * the size of the buffer required. 411 * Returns number of bytes used/required on success. 412 * 413 * Security hooks for file operations 414 * 415 * @file_permission: 416 * Check file permissions before accessing an open file. This hook is 417 * called by various operations that read or write files. A security 418 * module can use this hook to perform additional checking on these 419 * operations, e.g. to revalidate permissions on use to support privilege 420 * bracketing or policy changes. Notice that this hook is used when the 421 * actual read/write operations are performed, whereas the 422 * inode_security_ops hook is called when a file is opened (as well as 423 * many other operations). 424 * Caveat: Although this hook can be used to revalidate permissions for 425 * various system call operations that read or write files, it does not 426 * address the revalidation of permissions for memory-mapped files. 427 * Security modules must handle this separately if they need such 428 * revalidation. 429 * @file contains the file structure being accessed. 430 * @mask contains the requested permissions. 431 * Return 0 if permission is granted. 432 * @file_alloc_security: 433 * Allocate and attach a security structure to the file->f_security field. 434 * The security field is initialized to NULL when the structure is first 435 * created. 436 * @file contains the file structure to secure. 437 * Return 0 if the hook is successful and permission is granted. 438 * @file_free_security: 439 * Deallocate and free any security structures stored in file->f_security. 440 * @file contains the file structure being modified. 441 * @file_ioctl: 442 * @file contains the file structure. 443 * @cmd contains the operation to perform. 444 * @arg contains the operational arguments. 445 * Check permission for an ioctl operation on @file. Note that @arg can 446 * sometimes represents a user space pointer; in other cases, it may be a 447 * simple integer value. When @arg represents a user space pointer, it 448 * should never be used by the security module. 449 * Return 0 if permission is granted. 450 * @file_mmap : 451 * Check permissions for a mmap operation. The @file may be NULL, e.g. 452 * if mapping anonymous memory. 453 * @file contains the file structure for file to map (may be NULL). 454 * @reqprot contains the protection requested by the application. 455 * @prot contains the protection that will be applied by the kernel. 456 * @flags contains the operational flags. 457 * Return 0 if permission is granted. 458 * @file_mprotect: 459 * Check permissions before changing memory access permissions. 460 * @vma contains the memory region to modify. 461 * @reqprot contains the protection requested by the application. 462 * @prot contains the protection that will be applied by the kernel. 463 * Return 0 if permission is granted. 464 * @file_lock: 465 * Check permission before performing file locking operations. 466 * Note: this hook mediates both flock and fcntl style locks. 467 * @file contains the file structure. 468 * @cmd contains the posix-translated lock operation to perform 469 * (e.g. F_RDLCK, F_WRLCK). 470 * Return 0 if permission is granted. 471 * @file_fcntl: 472 * Check permission before allowing the file operation specified by @cmd 473 * from being performed on the file @file. Note that @arg can sometimes 474 * represents a user space pointer; in other cases, it may be a simple 475 * integer value. When @arg represents a user space pointer, it should 476 * never be used by the security module. 477 * @file contains the file structure. 478 * @cmd contains the operation to be performed. 479 * @arg contains the operational arguments. 480 * Return 0 if permission is granted. 481 * @file_set_fowner: 482 * Save owner security information (typically from current->security) in 483 * file->f_security for later use by the send_sigiotask hook. 484 * @file contains the file structure to update. 485 * Return 0 on success. 486 * @file_send_sigiotask: 487 * Check permission for the file owner @fown to send SIGIO or SIGURG to the 488 * process @tsk. Note that this hook is sometimes called from interrupt. 489 * Note that the fown_struct, @fown, is never outside the context of a 490 * struct file, so the file structure (and associated security information) 491 * can always be obtained: 492 * (struct file *)((long)fown - offsetof(struct file,f_owner)); 493 * @tsk contains the structure of task receiving signal. 494 * @fown contains the file owner information. 495 * @sig is the signal that will be sent. When 0, kernel sends SIGIO. 496 * Return 0 if permission is granted. 497 * @file_receive: 498 * This hook allows security modules to control the ability of a process 499 * to receive an open file descriptor via socket IPC. 500 * @file contains the file structure being received. 501 * Return 0 if permission is granted. 502 * 503 * Security hooks for task operations. 504 * 505 * @task_create: 506 * Check permission before creating a child process. See the clone(2) 507 * manual page for definitions of the @clone_flags. 508 * @clone_flags contains the flags indicating what should be shared. 509 * Return 0 if permission is granted. 510 * @task_alloc_security: 511 * @p contains the task_struct for child process. 512 * Allocate and attach a security structure to the p->security field. The 513 * security field is initialized to NULL when the task structure is 514 * allocated. 515 * Return 0 if operation was successful. 516 * @task_free_security: 517 * @p contains the task_struct for process. 518 * Deallocate and clear the p->security field. 519 * @task_setuid: 520 * Check permission before setting one or more of the user identity 521 * attributes of the current process. The @flags parameter indicates 522 * which of the set*uid system calls invoked this hook and how to 523 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID 524 * definitions at the beginning of this file for the @flags values and 525 * their meanings. 526 * @id0 contains a uid. 527 * @id1 contains a uid. 528 * @id2 contains a uid. 529 * @flags contains one of the LSM_SETID_* values. 530 * Return 0 if permission is granted. 531 * @task_post_setuid: 532 * Update the module's state after setting one or more of the user 533 * identity attributes of the current process. The @flags parameter 534 * indicates which of the set*uid system calls invoked this hook. If 535 * @flags is LSM_SETID_FS, then @old_ruid is the old fs uid and the other 536 * parameters are not used. 537 * @old_ruid contains the old real uid (or fs uid if LSM_SETID_FS). 538 * @old_euid contains the old effective uid (or -1 if LSM_SETID_FS). 539 * @old_suid contains the old saved uid (or -1 if LSM_SETID_FS). 540 * @flags contains one of the LSM_SETID_* values. 541 * Return 0 on success. 542 * @task_setgid: 543 * Check permission before setting one or more of the group identity 544 * attributes of the current process. The @flags parameter indicates 545 * which of the set*gid system calls invoked this hook and how to 546 * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID 547 * definitions at the beginning of this file for the @flags values and 548 * their meanings. 549 * @id0 contains a gid. 550 * @id1 contains a gid. 551 * @id2 contains a gid. 552 * @flags contains one of the LSM_SETID_* values. 553 * Return 0 if permission is granted. 554 * @task_setpgid: 555 * Check permission before setting the process group identifier of the 556 * process @p to @pgid. 557 * @p contains the task_struct for process being modified. 558 * @pgid contains the new pgid. 559 * Return 0 if permission is granted. 560 * @task_getpgid: 561 * Check permission before getting the process group identifier of the 562 * process @p. 563 * @p contains the task_struct for the process. 564 * Return 0 if permission is granted. 565 * @task_getsid: 566 * Check permission before getting the session identifier of the process 567 * @p. 568 * @p contains the task_struct for the process. 569 * Return 0 if permission is granted. 570 * @task_setgroups: 571 * Check permission before setting the supplementary group set of the 572 * current process. 573 * @group_info contains the new group information. 574 * Return 0 if permission is granted. 575 * @task_setnice: 576 * Check permission before setting the nice value of @p to @nice. 577 * @p contains the task_struct of process. 578 * @nice contains the new nice value. 579 * Return 0 if permission is granted. 580 * @task_setrlimit: 581 * Check permission before setting the resource limits of the current 582 * process for @resource to @new_rlim. The old resource limit values can 583 * be examined by dereferencing (current->signal->rlim + resource). 584 * @resource contains the resource whose limit is being set. 585 * @new_rlim contains the new limits for @resource. 586 * Return 0 if permission is granted. 587 * @task_setscheduler: 588 * Check permission before setting scheduling policy and/or parameters of 589 * process @p based on @policy and @lp. 590 * @p contains the task_struct for process. 591 * @policy contains the scheduling policy. 592 * @lp contains the scheduling parameters. 593 * Return 0 if permission is granted. 594 * @task_getscheduler: 595 * Check permission before obtaining scheduling information for process 596 * @p. 597 * @p contains the task_struct for process. 598 * Return 0 if permission is granted. 599 * @task_kill: 600 * Check permission before sending signal @sig to @p. @info can be NULL, 601 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or 602 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming 603 * from the kernel and should typically be permitted. 604 * SIGIO signals are handled separately by the send_sigiotask hook in 605 * file_security_ops. 606 * @p contains the task_struct for process. 607 * @info contains the signal information. 608 * @sig contains the signal value. 609 * Return 0 if permission is granted. 610 * @task_wait: 611 * Check permission before allowing a process to reap a child process @p 612 * and collect its status information. 613 * @p contains the task_struct for process. 614 * Return 0 if permission is granted. 615 * @task_prctl: 616 * Check permission before performing a process control operation on the 617 * current process. 618 * @option contains the operation. 619 * @arg2 contains a argument. 620 * @arg3 contains a argument. 621 * @arg4 contains a argument. 622 * @arg5 contains a argument. 623 * Return 0 if permission is granted. 624 * @task_reparent_to_init: 625 * Set the security attributes in @p->security for a kernel thread that 626 * is being reparented to the init task. 627 * @p contains the task_struct for the kernel thread. 628 * @task_to_inode: 629 * Set the security attributes for an inode based on an associated task's 630 * security attributes, e.g. for /proc/pid inodes. 631 * @p contains the task_struct for the task. 632 * @inode contains the inode structure for the inode. 633 * 634 * Security hooks for Netlink messaging. 635 * 636 * @netlink_send: 637 * Save security information for a netlink message so that permission 638 * checking can be performed when the message is processed. The security 639 * information can be saved using the eff_cap field of the 640 * netlink_skb_parms structure. Also may be used to provide fine 641 * grained control over message transmission. 642 * @sk associated sock of task sending the message., 643 * @skb contains the sk_buff structure for the netlink message. 644 * Return 0 if the information was successfully saved and message 645 * is allowed to be transmitted. 646 * @netlink_recv: 647 * Check permission before processing the received netlink message in 648 * @skb. 649 * @skb contains the sk_buff structure for the netlink message. 650 * Return 0 if permission is granted. 651 * 652 * Security hooks for Unix domain networking. 653 * 654 * @unix_stream_connect: 655 * Check permissions before establishing a Unix domain stream connection 656 * between @sock and @other. 657 * @sock contains the socket structure. 658 * @other contains the peer socket structure. 659 * Return 0 if permission is granted. 660 * @unix_may_send: 661 * Check permissions before connecting or sending datagrams from @sock to 662 * @other. 663 * @sock contains the socket structure. 664 * @sock contains the peer socket structure. 665 * Return 0 if permission is granted. 666 * 667 * The @unix_stream_connect and @unix_may_send hooks were necessary because 668 * Linux provides an alternative to the conventional file name space for Unix 669 * domain sockets. Whereas binding and connecting to sockets in the file name 670 * space is mediated by the typical file permissions (and caught by the mknod 671 * and permission hooks in inode_security_ops), binding and connecting to 672 * sockets in the abstract name space is completely unmediated. Sufficient 673 * control of Unix domain sockets in the abstract name space isn't possible 674 * using only the socket layer hooks, since we need to know the actual target 675 * socket, which is not looked up until we are inside the af_unix code. 676 * 677 * Security hooks for socket operations. 678 * 679 * @socket_create: 680 * Check permissions prior to creating a new socket. 681 * @family contains the requested protocol family. 682 * @type contains the requested communications type. 683 * @protocol contains the requested protocol. 684 * @kern set to 1 if a kernel socket. 685 * Return 0 if permission is granted. 686 * @socket_post_create: 687 * This hook allows a module to update or allocate a per-socket security 688 * structure. Note that the security field was not added directly to the 689 * socket structure, but rather, the socket security information is stored 690 * in the associated inode. Typically, the inode alloc_security hook will 691 * allocate and and attach security information to 692 * sock->inode->i_security. This hook may be used to update the 693 * sock->inode->i_security field with additional information that wasn't 694 * available when the inode was allocated. 695 * @sock contains the newly created socket structure. 696 * @family contains the requested protocol family. 697 * @type contains the requested communications type. 698 * @protocol contains the requested protocol. 699 * @kern set to 1 if a kernel socket. 700 * @socket_bind: 701 * Check permission before socket protocol layer bind operation is 702 * performed and the socket @sock is bound to the address specified in the 703 * @address parameter. 704 * @sock contains the socket structure. 705 * @address contains the address to bind to. 706 * @addrlen contains the length of address. 707 * Return 0 if permission is granted. 708 * @socket_connect: 709 * Check permission before socket protocol layer connect operation 710 * attempts to connect socket @sock to a remote address, @address. 711 * @sock contains the socket structure. 712 * @address contains the address of remote endpoint. 713 * @addrlen contains the length of address. 714 * Return 0 if permission is granted. 715 * @socket_listen: 716 * Check permission before socket protocol layer listen operation. 717 * @sock contains the socket structure. 718 * @backlog contains the maximum length for the pending connection queue. 719 * Return 0 if permission is granted. 720 * @socket_accept: 721 * Check permission before accepting a new connection. Note that the new 722 * socket, @newsock, has been created and some information copied to it, 723 * but the accept operation has not actually been performed. 724 * @sock contains the listening socket structure. 725 * @newsock contains the newly created server socket for connection. 726 * Return 0 if permission is granted. 727 * @socket_post_accept: 728 * This hook allows a security module to copy security 729 * information into the newly created socket's inode. 730 * @sock contains the listening socket structure. 731 * @newsock contains the newly created server socket for connection. 732 * @socket_sendmsg: 733 * Check permission before transmitting a message to another socket. 734 * @sock contains the socket structure. 735 * @msg contains the message to be transmitted. 736 * @size contains the size of message. 737 * Return 0 if permission is granted. 738 * @socket_recvmsg: 739 * Check permission before receiving a message from a socket. 740 * @sock contains the socket structure. 741 * @msg contains the message structure. 742 * @size contains the size of message structure. 743 * @flags contains the operational flags. 744 * Return 0 if permission is granted. 745 * @socket_getsockname: 746 * Check permission before the local address (name) of the socket object 747 * @sock is retrieved. 748 * @sock contains the socket structure. 749 * Return 0 if permission is granted. 750 * @socket_getpeername: 751 * Check permission before the remote address (name) of a socket object 752 * @sock is retrieved. 753 * @sock contains the socket structure. 754 * Return 0 if permission is granted. 755 * @socket_getsockopt: 756 * Check permissions before retrieving the options associated with socket 757 * @sock. 758 * @sock contains the socket structure. 759 * @level contains the protocol level to retrieve option from. 760 * @optname contains the name of option to retrieve. 761 * Return 0 if permission is granted. 762 * @socket_setsockopt: 763 * Check permissions before setting the options associated with socket 764 * @sock. 765 * @sock contains the socket structure. 766 * @level contains the protocol level to set options for. 767 * @optname contains the name of the option to set. 768 * Return 0 if permission is granted. 769 * @socket_shutdown: 770 * Checks permission before all or part of a connection on the socket 771 * @sock is shut down. 772 * @sock contains the socket structure. 773 * @how contains the flag indicating how future sends and receives are handled. 774 * Return 0 if permission is granted. 775 * @socket_sock_rcv_skb: 776 * Check permissions on incoming network packets. This hook is distinct 777 * from Netfilter's IP input hooks since it is the first time that the 778 * incoming sk_buff @skb has been associated with a particular socket, @sk. 779 * @sk contains the sock (not socket) associated with the incoming sk_buff. 780 * @skb contains the incoming network data. 781 * @socket_getpeersec: 782 * This hook allows the security module to provide peer socket security 783 * state to userspace via getsockopt SO_GETPEERSEC. 784 * @sock is the local socket. 785 * @optval userspace memory where the security state is to be copied. 786 * @optlen userspace int where the module should copy the actual length 787 * of the security state. 788 * @len as input is the maximum length to copy to userspace provided 789 * by the caller. 790 * Return 0 if all is well, otherwise, typical getsockopt return 791 * values. 792 * @sk_alloc_security: 793 * Allocate and attach a security structure to the sk->sk_security field, 794 * which is used to copy security attributes between local stream sockets. 795 * @sk_free_security: 796 * Deallocate security structure. 797 * @sk_getsid: 798 * Retrieve the LSM-specific sid for the sock to enable caching of network 799 * authorizations. 800 * 801 * Security hooks for XFRM operations. 802 * 803 * @xfrm_policy_alloc_security: 804 * @xp contains the xfrm_policy being added to Security Policy Database 805 * used by the XFRM system. 806 * @sec_ctx contains the security context information being provided by 807 * the user-level policy update program (e.g., setkey). 808 * Allocate a security structure to the xp->selector.security field. 809 * The security field is initialized to NULL when the xfrm_policy is 810 * allocated. 811 * Return 0 if operation was successful (memory to allocate, legal context) 812 * @xfrm_policy_clone_security: 813 * @old contains an existing xfrm_policy in the SPD. 814 * @new contains a new xfrm_policy being cloned from old. 815 * Allocate a security structure to the new->selector.security field 816 * that contains the information from the old->selector.security field. 817 * Return 0 if operation was successful (memory to allocate). 818 * @xfrm_policy_free_security: 819 * @xp contains the xfrm_policy 820 * Deallocate xp->selector.security. 821 * @xfrm_state_alloc_security: 822 * @x contains the xfrm_state being added to the Security Association 823 * Database by the XFRM system. 824 * @sec_ctx contains the security context information being provided by 825 * the user-level SA generation program (e.g., setkey or racoon). 826 * Allocate a security structure to the x->sel.security field. The 827 * security field is initialized to NULL when the xfrm_state is 828 * allocated. 829 * Return 0 if operation was successful (memory to allocate, legal context). 830 * @xfrm_state_free_security: 831 * @x contains the xfrm_state. 832 * Deallocate x>sel.security. 833 * @xfrm_policy_lookup: 834 * @xp contains the xfrm_policy for which the access control is being 835 * checked. 836 * @sk_sid contains the sock security label that is used to authorize 837 * access to the policy xp. 838 * @dir contains the direction of the flow (input or output). 839 * Check permission when a sock selects a xfrm_policy for processing 840 * XFRMs on a packet. The hook is called when selecting either a 841 * per-socket policy or a generic xfrm policy. 842 * Return 0 if permission is granted. 843 * 844 * Security hooks affecting all Key Management operations 845 * 846 * @key_alloc: 847 * Permit allocation of a key and assign security data. Note that key does 848 * not have a serial number assigned at this point. 849 * @key points to the key. 850 * Return 0 if permission is granted, -ve error otherwise. 851 * @key_free: 852 * Notification of destruction; free security data. 853 * @key points to the key. 854 * No return value. 855 * @key_permission: 856 * See whether a specific operational right is granted to a process on a 857 * key. 858 * @key_ref refers to the key (key pointer + possession attribute bit). 859 * @context points to the process to provide the context against which to 860 * evaluate the security data on the key. 861 * @perm describes the combination of permissions required of this key. 862 * Return 1 if permission granted, 0 if permission denied and -ve it the 863 * normal permissions model should be effected. 864 * 865 * Security hooks affecting all System V IPC operations. 866 * 867 * @ipc_permission: 868 * Check permissions for access to IPC 869 * @ipcp contains the kernel IPC permission structure 870 * @flag contains the desired (requested) permission set 871 * Return 0 if permission is granted. 872 * 873 * Security hooks for individual messages held in System V IPC message queues 874 * @msg_msg_alloc_security: 875 * Allocate and attach a security structure to the msg->security field. 876 * The security field is initialized to NULL when the structure is first 877 * created. 878 * @msg contains the message structure to be modified. 879 * Return 0 if operation was successful and permission is granted. 880 * @msg_msg_free_security: 881 * Deallocate the security structure for this message. 882 * @msg contains the message structure to be modified. 883 * 884 * Security hooks for System V IPC Message Queues 885 * 886 * @msg_queue_alloc_security: 887 * Allocate and attach a security structure to the 888 * msq->q_perm.security field. The security field is initialized to 889 * NULL when the structure is first created. 890 * @msq contains the message queue structure to be modified. 891 * Return 0 if operation was successful and permission is granted. 892 * @msg_queue_free_security: 893 * Deallocate security structure for this message queue. 894 * @msq contains the message queue structure to be modified. 895 * @msg_queue_associate: 896 * Check permission when a message queue is requested through the 897 * msgget system call. This hook is only called when returning the 898 * message queue identifier for an existing message queue, not when a 899 * new message queue is created. 900 * @msq contains the message queue to act upon. 901 * @msqflg contains the operation control flags. 902 * Return 0 if permission is granted. 903 * @msg_queue_msgctl: 904 * Check permission when a message control operation specified by @cmd 905 * is to be performed on the message queue @msq. 906 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO. 907 * @msq contains the message queue to act upon. May be NULL. 908 * @cmd contains the operation to be performed. 909 * Return 0 if permission is granted. 910 * @msg_queue_msgsnd: 911 * Check permission before a message, @msg, is enqueued on the message 912 * queue, @msq. 913 * @msq contains the message queue to send message to. 914 * @msg contains the message to be enqueued. 915 * @msqflg contains operational flags. 916 * Return 0 if permission is granted. 917 * @msg_queue_msgrcv: 918 * Check permission before a message, @msg, is removed from the message 919 * queue, @msq. The @target task structure contains a pointer to the 920 * process that will be receiving the message (not equal to the current 921 * process when inline receives are being performed). 922 * @msq contains the message queue to retrieve message from. 923 * @msg contains the message destination. 924 * @target contains the task structure for recipient process. 925 * @type contains the type of message requested. 926 * @mode contains the operational flags. 927 * Return 0 if permission is granted. 928 * 929 * Security hooks for System V Shared Memory Segments 930 * 931 * @shm_alloc_security: 932 * Allocate and attach a security structure to the shp->shm_perm.security 933 * field. The security field is initialized to NULL when the structure is 934 * first created. 935 * @shp contains the shared memory structure to be modified. 936 * Return 0 if operation was successful and permission is granted. 937 * @shm_free_security: 938 * Deallocate the security struct for this memory segment. 939 * @shp contains the shared memory structure to be modified. 940 * @shm_associate: 941 * Check permission when a shared memory region is requested through the 942 * shmget system call. This hook is only called when returning the shared 943 * memory region identifier for an existing region, not when a new shared 944 * memory region is created. 945 * @shp contains the shared memory structure to be modified. 946 * @shmflg contains the operation control flags. 947 * Return 0 if permission is granted. 948 * @shm_shmctl: 949 * Check permission when a shared memory control operation specified by 950 * @cmd is to be performed on the shared memory region @shp. 951 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO. 952 * @shp contains shared memory structure to be modified. 953 * @cmd contains the operation to be performed. 954 * Return 0 if permission is granted. 955 * @shm_shmat: 956 * Check permissions prior to allowing the shmat system call to attach the 957 * shared memory segment @shp to the data segment of the calling process. 958 * The attaching address is specified by @shmaddr. 959 * @shp contains the shared memory structure to be modified. 960 * @shmaddr contains the address to attach memory region to. 961 * @shmflg contains the operational flags. 962 * Return 0 if permission is granted. 963 * 964 * Security hooks for System V Semaphores 965 * 966 * @sem_alloc_security: 967 * Allocate and attach a security structure to the sma->sem_perm.security 968 * field. The security field is initialized to NULL when the structure is 969 * first created. 970 * @sma contains the semaphore structure 971 * Return 0 if operation was successful and permission is granted. 972 * @sem_free_security: 973 * deallocate security struct for this semaphore 974 * @sma contains the semaphore structure. 975 * @sem_associate: 976 * Check permission when a semaphore is requested through the semget 977 * system call. This hook is only called when returning the semaphore 978 * identifier for an existing semaphore, not when a new one must be 979 * created. 980 * @sma contains the semaphore structure. 981 * @semflg contains the operation control flags. 982 * Return 0 if permission is granted. 983 * @sem_semctl: 984 * Check permission when a semaphore operation specified by @cmd is to be 985 * performed on the semaphore @sma. The @sma may be NULL, e.g. for 986 * IPC_INFO or SEM_INFO. 987 * @sma contains the semaphore structure. May be NULL. 988 * @cmd contains the operation to be performed. 989 * Return 0 if permission is granted. 990 * @sem_semop 991 * Check permissions before performing operations on members of the 992 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set 993 * may be modified. 994 * @sma contains the semaphore structure. 995 * @sops contains the operations to perform. 996 * @nsops contains the number of operations to perform. 997 * @alter contains the flag indicating whether changes are to be made. 998 * Return 0 if permission is granted. 999 * 1000 * @ptrace: 1001 * Check permission before allowing the @parent process to trace the 1002 * @child process. 1003 * Security modules may also want to perform a process tracing check 1004 * during an execve in the set_security or apply_creds hooks of 1005 * binprm_security_ops if the process is being traced and its security 1006 * attributes would be changed by the execve. 1007 * @parent contains the task_struct structure for parent process. 1008 * @child contains the task_struct structure for child process. 1009 * Return 0 if permission is granted. 1010 * @capget: 1011 * Get the @effective, @inheritable, and @permitted capability sets for 1012 * the @target process. The hook may also perform permission checking to 1013 * determine if the current process is allowed to see the capability sets 1014 * of the @target process. 1015 * @target contains the task_struct structure for target process. 1016 * @effective contains the effective capability set. 1017 * @inheritable contains the inheritable capability set. 1018 * @permitted contains the permitted capability set. 1019 * Return 0 if the capability sets were successfully obtained. 1020 * @capset_check: 1021 * Check permission before setting the @effective, @inheritable, and 1022 * @permitted capability sets for the @target process. 1023 * Caveat: @target is also set to current if a set of processes is 1024 * specified (i.e. all processes other than current and init or a 1025 * particular process group). Hence, the capset_set hook may need to 1026 * revalidate permission to the actual target process. 1027 * @target contains the task_struct structure for target process. 1028 * @effective contains the effective capability set. 1029 * @inheritable contains the inheritable capability set. 1030 * @permitted contains the permitted capability set. 1031 * Return 0 if permission is granted. 1032 * @capset_set: 1033 * Set the @effective, @inheritable, and @permitted capability sets for 1034 * the @target process. Since capset_check cannot always check permission 1035 * to the real @target process, this hook may also perform permission 1036 * checking to determine if the current process is allowed to set the 1037 * capability sets of the @target process. However, this hook has no way 1038 * of returning an error due to the structure of the sys_capset code. 1039 * @target contains the task_struct structure for target process. 1040 * @effective contains the effective capability set. 1041 * @inheritable contains the inheritable capability set. 1042 * @permitted contains the permitted capability set. 1043 * @acct: 1044 * Check permission before enabling or disabling process accounting. If 1045 * accounting is being enabled, then @file refers to the open file used to 1046 * store accounting records. If accounting is being disabled, then @file 1047 * is NULL. 1048 * @file contains the file structure for the accounting file (may be NULL). 1049 * Return 0 if permission is granted. 1050 * @sysctl: 1051 * Check permission before accessing the @table sysctl variable in the 1052 * manner specified by @op. 1053 * @table contains the ctl_table structure for the sysctl variable. 1054 * @op contains the operation (001 = search, 002 = write, 004 = read). 1055 * Return 0 if permission is granted. 1056 * @capable: 1057 * Check whether the @tsk process has the @cap capability. 1058 * @tsk contains the task_struct for the process. 1059 * @cap contains the capability <include/linux/capability.h>. 1060 * Return 0 if the capability is granted for @tsk. 1061 * @syslog: 1062 * Check permission before accessing the kernel message ring or changing 1063 * logging to the console. 1064 * See the syslog(2) manual page for an explanation of the @type values. 1065 * @type contains the type of action. 1066 * Return 0 if permission is granted. 1067 * @settime: 1068 * Check permission to change the system time. 1069 * struct timespec and timezone are defined in include/linux/time.h 1070 * @ts contains new time 1071 * @tz contains new timezone 1072 * Return 0 if permission is granted. 1073 * @vm_enough_memory: 1074 * Check permissions for allocating a new virtual mapping. 1075 * @pages contains the number of pages. 1076 * Return 0 if permission is granted. 1077 * 1078 * @register_security: 1079 * allow module stacking. 1080 * @name contains the name of the security module being stacked. 1081 * @ops contains a pointer to the struct security_operations of the module to stack. 1082 * @unregister_security: 1083 * remove a stacked module. 1084 * @name contains the name of the security module being unstacked. 1085 * @ops contains a pointer to the struct security_operations of the module to unstack. 1086 * 1087 * This is the main security structure. 1088 */ 1089struct security_operations { 1090 int (*ptrace) (struct task_struct * parent, struct task_struct * child); 1091 int (*capget) (struct task_struct * target, 1092 kernel_cap_t * effective, 1093 kernel_cap_t * inheritable, kernel_cap_t * permitted); 1094 int (*capset_check) (struct task_struct * target, 1095 kernel_cap_t * effective, 1096 kernel_cap_t * inheritable, 1097 kernel_cap_t * permitted); 1098 void (*capset_set) (struct task_struct * target, 1099 kernel_cap_t * effective, 1100 kernel_cap_t * inheritable, 1101 kernel_cap_t * permitted); 1102 int (*acct) (struct file * file); 1103 int (*sysctl) (struct ctl_table * table, int op); 1104 int (*capable) (struct task_struct * tsk, int cap); 1105 int (*quotactl) (int cmds, int type, int id, struct super_block * sb); 1106 int (*quota_on) (struct dentry * dentry); 1107 int (*syslog) (int type); 1108 int (*settime) (struct timespec *ts, struct timezone *tz); 1109 int (*vm_enough_memory) (long pages); 1110 1111 int (*bprm_alloc_security) (struct linux_binprm * bprm); 1112 void (*bprm_free_security) (struct linux_binprm * bprm); 1113 void (*bprm_apply_creds) (struct linux_binprm * bprm, int unsafe); 1114 void (*bprm_post_apply_creds) (struct linux_binprm * bprm); 1115 int (*bprm_set_security) (struct linux_binprm * bprm); 1116 int (*bprm_check_security) (struct linux_binprm * bprm); 1117 int (*bprm_secureexec) (struct linux_binprm * bprm); 1118 1119 int (*sb_alloc_security) (struct super_block * sb); 1120 void (*sb_free_security) (struct super_block * sb); 1121 int (*sb_copy_data)(struct file_system_type *type, 1122 void *orig, void *copy); 1123 int (*sb_kern_mount) (struct super_block *sb, void *data); 1124 int (*sb_statfs) (struct super_block * sb); 1125 int (*sb_mount) (char *dev_name, struct nameidata * nd, 1126 char *type, unsigned long flags, void *data); 1127 int (*sb_check_sb) (struct vfsmount * mnt, struct nameidata * nd); 1128 int (*sb_umount) (struct vfsmount * mnt, int flags); 1129 void (*sb_umount_close) (struct vfsmount * mnt); 1130 void (*sb_umount_busy) (struct vfsmount * mnt); 1131 void (*sb_post_remount) (struct vfsmount * mnt, 1132 unsigned long flags, void *data); 1133 void (*sb_post_mountroot) (void); 1134 void (*sb_post_addmount) (struct vfsmount * mnt, 1135 struct nameidata * mountpoint_nd); 1136 int (*sb_pivotroot) (struct nameidata * old_nd, 1137 struct nameidata * new_nd); 1138 void (*sb_post_pivotroot) (struct nameidata * old_nd, 1139 struct nameidata * new_nd); 1140 1141 int (*inode_alloc_security) (struct inode *inode); 1142 void (*inode_free_security) (struct inode *inode); 1143 int (*inode_init_security) (struct inode *inode, struct inode *dir, 1144 char **name, void **value, size_t *len); 1145 int (*inode_create) (struct inode *dir, 1146 struct dentry *dentry, int mode); 1147 int (*inode_link) (struct dentry *old_dentry, 1148 struct inode *dir, struct dentry *new_dentry); 1149 int (*inode_unlink) (struct inode *dir, struct dentry *dentry); 1150 int (*inode_symlink) (struct inode *dir, 1151 struct dentry *dentry, const char *old_name); 1152 int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode); 1153 int (*inode_rmdir) (struct inode *dir, struct dentry *dentry); 1154 int (*inode_mknod) (struct inode *dir, struct dentry *dentry, 1155 int mode, dev_t dev); 1156 int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry, 1157 struct inode *new_dir, struct dentry *new_dentry); 1158 int (*inode_readlink) (struct dentry *dentry); 1159 int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd); 1160 int (*inode_permission) (struct inode *inode, int mask, struct nameidata *nd); 1161 int (*inode_setattr) (struct dentry *dentry, struct iattr *attr); 1162 int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry); 1163 void (*inode_delete) (struct inode *inode); 1164 int (*inode_setxattr) (struct dentry *dentry, char *name, void *value, 1165 size_t size, int flags); 1166 void (*inode_post_setxattr) (struct dentry *dentry, char *name, void *value, 1167 size_t size, int flags); 1168 int (*inode_getxattr) (struct dentry *dentry, char *name); 1169 int (*inode_listxattr) (struct dentry *dentry); 1170 int (*inode_removexattr) (struct dentry *dentry, char *name); 1171 int (*inode_getsecurity)(struct inode *inode, const char *name, void *buffer, size_t size, int err); 1172 int (*inode_setsecurity)(struct inode *inode, const char *name, const void *value, size_t size, int flags); 1173 int (*inode_listsecurity)(struct inode *inode, char *buffer, size_t buffer_size); 1174 1175 int (*file_permission) (struct file * file, int mask); 1176 int (*file_alloc_security) (struct file * file); 1177 void (*file_free_security) (struct file * file); 1178 int (*file_ioctl) (struct file * file, unsigned int cmd, 1179 unsigned long arg); 1180 int (*file_mmap) (struct file * file, 1181 unsigned long reqprot, 1182 unsigned long prot, unsigned long flags); 1183 int (*file_mprotect) (struct vm_area_struct * vma, 1184 unsigned long reqprot, 1185 unsigned long prot); 1186 int (*file_lock) (struct file * file, unsigned int cmd); 1187 int (*file_fcntl) (struct file * file, unsigned int cmd, 1188 unsigned long arg); 1189 int (*file_set_fowner) (struct file * file); 1190 int (*file_send_sigiotask) (struct task_struct * tsk, 1191 struct fown_struct * fown, int sig); 1192 int (*file_receive) (struct file * file); 1193 1194 int (*task_create) (unsigned long clone_flags); 1195 int (*task_alloc_security) (struct task_struct * p); 1196 void (*task_free_security) (struct task_struct * p); 1197 int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags); 1198 int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ , 1199 uid_t old_euid, uid_t old_suid, int flags); 1200 int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags); 1201 int (*task_setpgid) (struct task_struct * p, pid_t pgid); 1202 int (*task_getpgid) (struct task_struct * p); 1203 int (*task_getsid) (struct task_struct * p); 1204 int (*task_setgroups) (struct group_info *group_info); 1205 int (*task_setnice) (struct task_struct * p, int nice); 1206 int (*task_setrlimit) (unsigned int resource, struct rlimit * new_rlim); 1207 int (*task_setscheduler) (struct task_struct * p, int policy, 1208 struct sched_param * lp); 1209 int (*task_getscheduler) (struct task_struct * p); 1210 int (*task_kill) (struct task_struct * p, 1211 struct siginfo * info, int sig); 1212 int (*task_wait) (struct task_struct * p); 1213 int (*task_prctl) (int option, unsigned long arg2, 1214 unsigned long arg3, unsigned long arg4, 1215 unsigned long arg5); 1216 void (*task_reparent_to_init) (struct task_struct * p); 1217 void (*task_to_inode)(struct task_struct *p, struct inode *inode); 1218 1219 int (*ipc_permission) (struct kern_ipc_perm * ipcp, short flag); 1220 1221 int (*msg_msg_alloc_security) (struct msg_msg * msg); 1222 void (*msg_msg_free_security) (struct msg_msg * msg); 1223 1224 int (*msg_queue_alloc_security) (struct msg_queue * msq); 1225 void (*msg_queue_free_security) (struct msg_queue * msq); 1226 int (*msg_queue_associate) (struct msg_queue * msq, int msqflg); 1227 int (*msg_queue_msgctl) (struct msg_queue * msq, int cmd); 1228 int (*msg_queue_msgsnd) (struct msg_queue * msq, 1229 struct msg_msg * msg, int msqflg); 1230 int (*msg_queue_msgrcv) (struct msg_queue * msq, 1231 struct msg_msg * msg, 1232 struct task_struct * target, 1233 long type, int mode); 1234 1235 int (*shm_alloc_security) (struct shmid_kernel * shp); 1236 void (*shm_free_security) (struct shmid_kernel * shp); 1237 int (*shm_associate) (struct shmid_kernel * shp, int shmflg); 1238 int (*shm_shmctl) (struct shmid_kernel * shp, int cmd); 1239 int (*shm_shmat) (struct shmid_kernel * shp, 1240 char __user *shmaddr, int shmflg); 1241 1242 int (*sem_alloc_security) (struct sem_array * sma); 1243 void (*sem_free_security) (struct sem_array * sma); 1244 int (*sem_associate) (struct sem_array * sma, int semflg); 1245 int (*sem_semctl) (struct sem_array * sma, int cmd); 1246 int (*sem_semop) (struct sem_array * sma, 1247 struct sembuf * sops, unsigned nsops, int alter); 1248 1249 int (*netlink_send) (struct sock * sk, struct sk_buff * skb); 1250 int (*netlink_recv) (struct sk_buff * skb); 1251 1252 /* allow module stacking */ 1253 int (*register_security) (const char *name, 1254 struct security_operations *ops); 1255 int (*unregister_security) (const char *name, 1256 struct security_operations *ops); 1257 1258 void (*d_instantiate) (struct dentry *dentry, struct inode *inode); 1259 1260 int (*getprocattr)(struct task_struct *p, char *name, void *value, size_t size); 1261 int (*setprocattr)(struct task_struct *p, char *name, void *value, size_t size); 1262 1263#ifdef CONFIG_SECURITY_NETWORK 1264 int (*unix_stream_connect) (struct socket * sock, 1265 struct socket * other, struct sock * newsk); 1266 int (*unix_may_send) (struct socket * sock, struct socket * other); 1267 1268 int (*socket_create) (int family, int type, int protocol, int kern); 1269 void (*socket_post_create) (struct socket * sock, int family, 1270 int type, int protocol, int kern); 1271 int (*socket_bind) (struct socket * sock, 1272 struct sockaddr * address, int addrlen); 1273 int (*socket_connect) (struct socket * sock, 1274 struct sockaddr * address, int addrlen); 1275 int (*socket_listen) (struct socket * sock, int backlog); 1276 int (*socket_accept) (struct socket * sock, struct socket * newsock); 1277 void (*socket_post_accept) (struct socket * sock, 1278 struct socket * newsock); 1279 int (*socket_sendmsg) (struct socket * sock, 1280 struct msghdr * msg, int size); 1281 int (*socket_recvmsg) (struct socket * sock, 1282 struct msghdr * msg, int size, int flags); 1283 int (*socket_getsockname) (struct socket * sock); 1284 int (*socket_getpeername) (struct socket * sock); 1285 int (*socket_getsockopt) (struct socket * sock, int level, int optname); 1286 int (*socket_setsockopt) (struct socket * sock, int level, int optname); 1287 int (*socket_shutdown) (struct socket * sock, int how); 1288 int (*socket_sock_rcv_skb) (struct sock * sk, struct sk_buff * skb); 1289 int (*socket_getpeersec) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len); 1290 int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority); 1291 void (*sk_free_security) (struct sock *sk); 1292 unsigned int (*sk_getsid) (struct sock *sk, struct flowi *fl, u8 dir); 1293#endif /* CONFIG_SECURITY_NETWORK */ 1294 1295#ifdef CONFIG_SECURITY_NETWORK_XFRM 1296 int (*xfrm_policy_alloc_security) (struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx); 1297 int (*xfrm_policy_clone_security) (struct xfrm_policy *old, struct xfrm_policy *new); 1298 void (*xfrm_policy_free_security) (struct xfrm_policy *xp); 1299 int (*xfrm_state_alloc_security) (struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1300 void (*xfrm_state_free_security) (struct xfrm_state *x); 1301 int (*xfrm_policy_lookup)(struct xfrm_policy *xp, u32 sk_sid, u8 dir); 1302#endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1303 1304 /* key management security hooks */ 1305#ifdef CONFIG_KEYS 1306 int (*key_alloc)(struct key *key); 1307 void (*key_free)(struct key *key); 1308 int (*key_permission)(key_ref_t key_ref, 1309 struct task_struct *context, 1310 key_perm_t perm); 1311 1312#endif /* CONFIG_KEYS */ 1313 1314}; 1315 1316/* global variables */ 1317extern struct security_operations *security_ops; 1318 1319/* inline stuff */ 1320static inline int security_ptrace (struct task_struct * parent, struct task_struct * child) 1321{ 1322 return security_ops->ptrace (parent, child); 1323} 1324 1325static inline int security_capget (struct task_struct *target, 1326 kernel_cap_t *effective, 1327 kernel_cap_t *inheritable, 1328 kernel_cap_t *permitted) 1329{ 1330 return security_ops->capget (target, effective, inheritable, permitted); 1331} 1332 1333static inline int security_capset_check (struct task_struct *target, 1334 kernel_cap_t *effective, 1335 kernel_cap_t *inheritable, 1336 kernel_cap_t *permitted) 1337{ 1338 return security_ops->capset_check (target, effective, inheritable, permitted); 1339} 1340 1341static inline void security_capset_set (struct task_struct *target, 1342 kernel_cap_t *effective, 1343 kernel_cap_t *inheritable, 1344 kernel_cap_t *permitted) 1345{ 1346 security_ops->capset_set (target, effective, inheritable, permitted); 1347} 1348 1349static inline int security_acct (struct file *file) 1350{ 1351 return security_ops->acct (file); 1352} 1353 1354static inline int security_sysctl(struct ctl_table *table, int op) 1355{ 1356 return security_ops->sysctl(table, op); 1357} 1358 1359static inline int security_quotactl (int cmds, int type, int id, 1360 struct super_block *sb) 1361{ 1362 return security_ops->quotactl (cmds, type, id, sb); 1363} 1364 1365static inline int security_quota_on (struct dentry * dentry) 1366{ 1367 return security_ops->quota_on (dentry); 1368} 1369 1370static inline int security_syslog(int type) 1371{ 1372 return security_ops->syslog(type); 1373} 1374 1375static inline int security_settime(struct timespec *ts, struct timezone *tz) 1376{ 1377 return security_ops->settime(ts, tz); 1378} 1379 1380 1381static inline int security_vm_enough_memory(long pages) 1382{ 1383 return security_ops->vm_enough_memory(pages); 1384} 1385 1386static inline int security_bprm_alloc (struct linux_binprm *bprm) 1387{ 1388 return security_ops->bprm_alloc_security (bprm); 1389} 1390static inline void security_bprm_free (struct linux_binprm *bprm) 1391{ 1392 security_ops->bprm_free_security (bprm); 1393} 1394static inline void security_bprm_apply_creds (struct linux_binprm *bprm, int unsafe) 1395{ 1396 security_ops->bprm_apply_creds (bprm, unsafe); 1397} 1398static inline void security_bprm_post_apply_creds (struct linux_binprm *bprm) 1399{ 1400 security_ops->bprm_post_apply_creds (bprm); 1401} 1402static inline int security_bprm_set (struct linux_binprm *bprm) 1403{ 1404 return security_ops->bprm_set_security (bprm); 1405} 1406 1407static inline int security_bprm_check (struct linux_binprm *bprm) 1408{ 1409 return security_ops->bprm_check_security (bprm); 1410} 1411 1412static inline int security_bprm_secureexec (struct linux_binprm *bprm) 1413{ 1414 return security_ops->bprm_secureexec (bprm); 1415} 1416 1417static inline int security_sb_alloc (struct super_block *sb) 1418{ 1419 return security_ops->sb_alloc_security (sb); 1420} 1421 1422static inline void security_sb_free (struct super_block *sb) 1423{ 1424 security_ops->sb_free_security (sb); 1425} 1426 1427static inline int security_sb_copy_data (struct file_system_type *type, 1428 void *orig, void *copy) 1429{ 1430 return security_ops->sb_copy_data (type, orig, copy); 1431} 1432 1433static inline int security_sb_kern_mount (struct super_block *sb, void *data) 1434{ 1435 return security_ops->sb_kern_mount (sb, data); 1436} 1437 1438static inline int security_sb_statfs (struct super_block *sb) 1439{ 1440 return security_ops->sb_statfs (sb); 1441} 1442 1443static inline int security_sb_mount (char *dev_name, struct nameidata *nd, 1444 char *type, unsigned long flags, 1445 void *data) 1446{ 1447 return security_ops->sb_mount (dev_name, nd, type, flags, data); 1448} 1449 1450static inline int security_sb_check_sb (struct vfsmount *mnt, 1451 struct nameidata *nd) 1452{ 1453 return security_ops->sb_check_sb (mnt, nd); 1454} 1455 1456static inline int security_sb_umount (struct vfsmount *mnt, int flags) 1457{ 1458 return security_ops->sb_umount (mnt, flags); 1459} 1460 1461static inline void security_sb_umount_close (struct vfsmount *mnt) 1462{ 1463 security_ops->sb_umount_close (mnt); 1464} 1465 1466static inline void security_sb_umount_busy (struct vfsmount *mnt) 1467{ 1468 security_ops->sb_umount_busy (mnt); 1469} 1470 1471static inline void security_sb_post_remount (struct vfsmount *mnt, 1472 unsigned long flags, void *data) 1473{ 1474 security_ops->sb_post_remount (mnt, flags, data); 1475} 1476 1477static inline void security_sb_post_mountroot (void) 1478{ 1479 security_ops->sb_post_mountroot (); 1480} 1481 1482static inline void security_sb_post_addmount (struct vfsmount *mnt, 1483 struct nameidata *mountpoint_nd) 1484{ 1485 security_ops->sb_post_addmount (mnt, mountpoint_nd); 1486} 1487 1488static inline int security_sb_pivotroot (struct nameidata *old_nd, 1489 struct nameidata *new_nd) 1490{ 1491 return security_ops->sb_pivotroot (old_nd, new_nd); 1492} 1493 1494static inline void security_sb_post_pivotroot (struct nameidata *old_nd, 1495 struct nameidata *new_nd) 1496{ 1497 security_ops->sb_post_pivotroot (old_nd, new_nd); 1498} 1499 1500static inline int security_inode_alloc (struct inode *inode) 1501{ 1502 if (unlikely (IS_PRIVATE (inode))) 1503 return 0; 1504 return security_ops->inode_alloc_security (inode); 1505} 1506 1507static inline void security_inode_free (struct inode *inode) 1508{ 1509 if (unlikely (IS_PRIVATE (inode))) 1510 return; 1511 security_ops->inode_free_security (inode); 1512} 1513 1514static inline int security_inode_init_security (struct inode *inode, 1515 struct inode *dir, 1516 char **name, 1517 void **value, 1518 size_t *len) 1519{ 1520 if (unlikely (IS_PRIVATE (inode))) 1521 return -EOPNOTSUPP; 1522 return security_ops->inode_init_security (inode, dir, name, value, len); 1523} 1524 1525static inline int security_inode_create (struct inode *dir, 1526 struct dentry *dentry, 1527 int mode) 1528{ 1529 if (unlikely (IS_PRIVATE (dir))) 1530 return 0; 1531 return security_ops->inode_create (dir, dentry, mode); 1532} 1533 1534static inline int security_inode_link (struct dentry *old_dentry, 1535 struct inode *dir, 1536 struct dentry *new_dentry) 1537{ 1538 if (unlikely (IS_PRIVATE (old_dentry->d_inode))) 1539 return 0; 1540 return security_ops->inode_link (old_dentry, dir, new_dentry); 1541} 1542 1543static inline int security_inode_unlink (struct inode *dir, 1544 struct dentry *dentry) 1545{ 1546 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1547 return 0; 1548 return security_ops->inode_unlink (dir, dentry); 1549} 1550 1551static inline int security_inode_symlink (struct inode *dir, 1552 struct dentry *dentry, 1553 const char *old_name) 1554{ 1555 if (unlikely (IS_PRIVATE (dir))) 1556 return 0; 1557 return security_ops->inode_symlink (dir, dentry, old_name); 1558} 1559 1560static inline int security_inode_mkdir (struct inode *dir, 1561 struct dentry *dentry, 1562 int mode) 1563{ 1564 if (unlikely (IS_PRIVATE (dir))) 1565 return 0; 1566 return security_ops->inode_mkdir (dir, dentry, mode); 1567} 1568 1569static inline int security_inode_rmdir (struct inode *dir, 1570 struct dentry *dentry) 1571{ 1572 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1573 return 0; 1574 return security_ops->inode_rmdir (dir, dentry); 1575} 1576 1577static inline int security_inode_mknod (struct inode *dir, 1578 struct dentry *dentry, 1579 int mode, dev_t dev) 1580{ 1581 if (unlikely (IS_PRIVATE (dir))) 1582 return 0; 1583 return security_ops->inode_mknod (dir, dentry, mode, dev); 1584} 1585 1586static inline int security_inode_rename (struct inode *old_dir, 1587 struct dentry *old_dentry, 1588 struct inode *new_dir, 1589 struct dentry *new_dentry) 1590{ 1591 if (unlikely (IS_PRIVATE (old_dentry->d_inode) || 1592 (new_dentry->d_inode && IS_PRIVATE (new_dentry->d_inode)))) 1593 return 0; 1594 return security_ops->inode_rename (old_dir, old_dentry, 1595 new_dir, new_dentry); 1596} 1597 1598static inline int security_inode_readlink (struct dentry *dentry) 1599{ 1600 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1601 return 0; 1602 return security_ops->inode_readlink (dentry); 1603} 1604 1605static inline int security_inode_follow_link (struct dentry *dentry, 1606 struct nameidata *nd) 1607{ 1608 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1609 return 0; 1610 return security_ops->inode_follow_link (dentry, nd); 1611} 1612 1613static inline int security_inode_permission (struct inode *inode, int mask, 1614 struct nameidata *nd) 1615{ 1616 if (unlikely (IS_PRIVATE (inode))) 1617 return 0; 1618 return security_ops->inode_permission (inode, mask, nd); 1619} 1620 1621static inline int security_inode_setattr (struct dentry *dentry, 1622 struct iattr *attr) 1623{ 1624 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1625 return 0; 1626 return security_ops->inode_setattr (dentry, attr); 1627} 1628 1629static inline int security_inode_getattr (struct vfsmount *mnt, 1630 struct dentry *dentry) 1631{ 1632 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1633 return 0; 1634 return security_ops->inode_getattr (mnt, dentry); 1635} 1636 1637static inline void security_inode_delete (struct inode *inode) 1638{ 1639 if (unlikely (IS_PRIVATE (inode))) 1640 return; 1641 security_ops->inode_delete (inode); 1642} 1643 1644static inline int security_inode_setxattr (struct dentry *dentry, char *name, 1645 void *value, size_t size, int flags) 1646{ 1647 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1648 return 0; 1649 return security_ops->inode_setxattr (dentry, name, value, size, flags); 1650} 1651 1652static inline void security_inode_post_setxattr (struct dentry *dentry, char *name, 1653 void *value, size_t size, int flags) 1654{ 1655 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1656 return; 1657 security_ops->inode_post_setxattr (dentry, name, value, size, flags); 1658} 1659 1660static inline int security_inode_getxattr (struct dentry *dentry, char *name) 1661{ 1662 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1663 return 0; 1664 return security_ops->inode_getxattr (dentry, name); 1665} 1666 1667static inline int security_inode_listxattr (struct dentry *dentry) 1668{ 1669 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1670 return 0; 1671 return security_ops->inode_listxattr (dentry); 1672} 1673 1674static inline int security_inode_removexattr (struct dentry *dentry, char *name) 1675{ 1676 if (unlikely (IS_PRIVATE (dentry->d_inode))) 1677 return 0; 1678 return security_ops->inode_removexattr (dentry, name); 1679} 1680 1681static inline int security_inode_getsecurity(struct inode *inode, const char *name, void *buffer, size_t size, int err) 1682{ 1683 if (unlikely (IS_PRIVATE (inode))) 1684 return 0; 1685 return security_ops->inode_getsecurity(inode, name, buffer, size, err); 1686} 1687 1688static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 1689{ 1690 if (unlikely (IS_PRIVATE (inode))) 1691 return 0; 1692 return security_ops->inode_setsecurity(inode, name, value, size, flags); 1693} 1694 1695static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 1696{ 1697 if (unlikely (IS_PRIVATE (inode))) 1698 return 0; 1699 return security_ops->inode_listsecurity(inode, buffer, buffer_size); 1700} 1701 1702static inline int security_file_permission (struct file *file, int mask) 1703{ 1704 return security_ops->file_permission (file, mask); 1705} 1706 1707static inline int security_file_alloc (struct file *file) 1708{ 1709 return security_ops->file_alloc_security (file); 1710} 1711 1712static inline void security_file_free (struct file *file) 1713{ 1714 security_ops->file_free_security (file); 1715} 1716 1717static inline int security_file_ioctl (struct file *file, unsigned int cmd, 1718 unsigned long arg) 1719{ 1720 return security_ops->file_ioctl (file, cmd, arg); 1721} 1722 1723static inline int security_file_mmap (struct file *file, unsigned long reqprot, 1724 unsigned long prot, 1725 unsigned long flags) 1726{ 1727 return security_ops->file_mmap (file, reqprot, prot, flags); 1728} 1729 1730static inline int security_file_mprotect (struct vm_area_struct *vma, 1731 unsigned long reqprot, 1732 unsigned long prot) 1733{ 1734 return security_ops->file_mprotect (vma, reqprot, prot); 1735} 1736 1737static inline int security_file_lock (struct file *file, unsigned int cmd) 1738{ 1739 return security_ops->file_lock (file, cmd); 1740} 1741 1742static inline int security_file_fcntl (struct file *file, unsigned int cmd, 1743 unsigned long arg) 1744{ 1745 return security_ops->file_fcntl (file, cmd, arg); 1746} 1747 1748static inline int security_file_set_fowner (struct file *file) 1749{ 1750 return security_ops->file_set_fowner (file); 1751} 1752 1753static inline int security_file_send_sigiotask (struct task_struct *tsk, 1754 struct fown_struct *fown, 1755 int sig) 1756{ 1757 return security_ops->file_send_sigiotask (tsk, fown, sig); 1758} 1759 1760static inline int security_file_receive (struct file *file) 1761{ 1762 return security_ops->file_receive (file); 1763} 1764 1765static inline int security_task_create (unsigned long clone_flags) 1766{ 1767 return security_ops->task_create (clone_flags); 1768} 1769 1770static inline int security_task_alloc (struct task_struct *p) 1771{ 1772 return security_ops->task_alloc_security (p); 1773} 1774 1775static inline void security_task_free (struct task_struct *p) 1776{ 1777 security_ops->task_free_security (p); 1778} 1779 1780static inline int security_task_setuid (uid_t id0, uid_t id1, uid_t id2, 1781 int flags) 1782{ 1783 return security_ops->task_setuid (id0, id1, id2, flags); 1784} 1785 1786static inline int security_task_post_setuid (uid_t old_ruid, uid_t old_euid, 1787 uid_t old_suid, int flags) 1788{ 1789 return security_ops->task_post_setuid (old_ruid, old_euid, old_suid, flags); 1790} 1791 1792static inline int security_task_setgid (gid_t id0, gid_t id1, gid_t id2, 1793 int flags) 1794{ 1795 return security_ops->task_setgid (id0, id1, id2, flags); 1796} 1797 1798static inline int security_task_setpgid (struct task_struct *p, pid_t pgid) 1799{ 1800 return security_ops->task_setpgid (p, pgid); 1801} 1802 1803static inline int security_task_getpgid (struct task_struct *p) 1804{ 1805 return security_ops->task_getpgid (p); 1806} 1807 1808static inline int security_task_getsid (struct task_struct *p) 1809{ 1810 return security_ops->task_getsid (p); 1811} 1812 1813static inline int security_task_setgroups (struct group_info *group_info) 1814{ 1815 return security_ops->task_setgroups (group_info); 1816} 1817 1818static inline int security_task_setnice (struct task_struct *p, int nice) 1819{ 1820 return security_ops->task_setnice (p, nice); 1821} 1822 1823static inline int security_task_setrlimit (unsigned int resource, 1824 struct rlimit *new_rlim) 1825{ 1826 return security_ops->task_setrlimit (resource, new_rlim); 1827} 1828 1829static inline int security_task_setscheduler (struct task_struct *p, 1830 int policy, 1831 struct sched_param *lp) 1832{ 1833 return security_ops->task_setscheduler (p, policy, lp); 1834} 1835 1836static inline int security_task_getscheduler (struct task_struct *p) 1837{ 1838 return security_ops->task_getscheduler (p); 1839} 1840 1841static inline int security_task_kill (struct task_struct *p, 1842 struct siginfo *info, int sig) 1843{ 1844 return security_ops->task_kill (p, info, sig); 1845} 1846 1847static inline int security_task_wait (struct task_struct *p) 1848{ 1849 return security_ops->task_wait (p); 1850} 1851 1852static inline int security_task_prctl (int option, unsigned long arg2, 1853 unsigned long arg3, 1854 unsigned long arg4, 1855 unsigned long arg5) 1856{ 1857 return security_ops->task_prctl (option, arg2, arg3, arg4, arg5); 1858} 1859 1860static inline void security_task_reparent_to_init (struct task_struct *p) 1861{ 1862 security_ops->task_reparent_to_init (p); 1863} 1864 1865static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1866{ 1867 security_ops->task_to_inode(p, inode); 1868} 1869 1870static inline int security_ipc_permission (struct kern_ipc_perm *ipcp, 1871 short flag) 1872{ 1873 return security_ops->ipc_permission (ipcp, flag); 1874} 1875 1876static inline int security_msg_msg_alloc (struct msg_msg * msg) 1877{ 1878 return security_ops->msg_msg_alloc_security (msg); 1879} 1880 1881static inline void security_msg_msg_free (struct msg_msg * msg) 1882{ 1883 security_ops->msg_msg_free_security(msg); 1884} 1885 1886static inline int security_msg_queue_alloc (struct msg_queue *msq) 1887{ 1888 return security_ops->msg_queue_alloc_security (msq); 1889} 1890 1891static inline void security_msg_queue_free (struct msg_queue *msq) 1892{ 1893 security_ops->msg_queue_free_security (msq); 1894} 1895 1896static inline int security_msg_queue_associate (struct msg_queue * msq, 1897 int msqflg) 1898{ 1899 return security_ops->msg_queue_associate (msq, msqflg); 1900} 1901 1902static inline int security_msg_queue_msgctl (struct msg_queue * msq, int cmd) 1903{ 1904 return security_ops->msg_queue_msgctl (msq, cmd); 1905} 1906 1907static inline int security_msg_queue_msgsnd (struct msg_queue * msq, 1908 struct msg_msg * msg, int msqflg) 1909{ 1910 return security_ops->msg_queue_msgsnd (msq, msg, msqflg); 1911} 1912 1913static inline int security_msg_queue_msgrcv (struct msg_queue * msq, 1914 struct msg_msg * msg, 1915 struct task_struct * target, 1916 long type, int mode) 1917{ 1918 return security_ops->msg_queue_msgrcv (msq, msg, target, type, mode); 1919} 1920 1921static inline int security_shm_alloc (struct shmid_kernel *shp) 1922{ 1923 return security_ops->shm_alloc_security (shp); 1924} 1925 1926static inline void security_shm_free (struct shmid_kernel *shp) 1927{ 1928 security_ops->shm_free_security (shp); 1929} 1930 1931static inline int security_shm_associate (struct shmid_kernel * shp, 1932 int shmflg) 1933{ 1934 return security_ops->shm_associate(shp, shmflg); 1935} 1936 1937static inline int security_shm_shmctl (struct shmid_kernel * shp, int cmd) 1938{ 1939 return security_ops->shm_shmctl (shp, cmd); 1940} 1941 1942static inline int security_shm_shmat (struct shmid_kernel * shp, 1943 char __user *shmaddr, int shmflg) 1944{ 1945 return security_ops->shm_shmat(shp, shmaddr, shmflg); 1946} 1947 1948static inline int security_sem_alloc (struct sem_array *sma) 1949{ 1950 return security_ops->sem_alloc_security (sma); 1951} 1952 1953static inline void security_sem_free (struct sem_array *sma) 1954{ 1955 security_ops->sem_free_security (sma); 1956} 1957 1958static inline int security_sem_associate (struct sem_array * sma, int semflg) 1959{ 1960 return security_ops->sem_associate (sma, semflg); 1961} 1962 1963static inline int security_sem_semctl (struct sem_array * sma, int cmd) 1964{ 1965 return security_ops->sem_semctl(sma, cmd); 1966} 1967 1968static inline int security_sem_semop (struct sem_array * sma, 1969 struct sembuf * sops, unsigned nsops, 1970 int alter) 1971{ 1972 return security_ops->sem_semop(sma, sops, nsops, alter); 1973} 1974 1975static inline void security_d_instantiate (struct dentry *dentry, struct inode *inode) 1976{ 1977 if (unlikely (inode && IS_PRIVATE (inode))) 1978 return; 1979 security_ops->d_instantiate (dentry, inode); 1980} 1981 1982static inline int security_getprocattr(struct task_struct *p, char *name, void *value, size_t size) 1983{ 1984 return security_ops->getprocattr(p, name, value, size); 1985} 1986 1987static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) 1988{ 1989 return security_ops->setprocattr(p, name, value, size); 1990} 1991 1992static inline int security_netlink_send(struct sock *sk, struct sk_buff * skb) 1993{ 1994 return security_ops->netlink_send(sk, skb); 1995} 1996 1997static inline int security_netlink_recv(struct sk_buff * skb) 1998{ 1999 return security_ops->netlink_recv(skb); 2000} 2001 2002/* prototypes */ 2003extern int security_init (void); 2004extern int register_security (struct security_operations *ops); 2005extern int unregister_security (struct security_operations *ops); 2006extern int mod_reg_security (const char *name, struct security_operations *ops); 2007extern int mod_unreg_security (const char *name, struct security_operations *ops); 2008extern struct dentry *securityfs_create_file(const char *name, mode_t mode, 2009 struct dentry *parent, void *data, 2010 struct file_operations *fops); 2011extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 2012extern void securityfs_remove(struct dentry *dentry); 2013 2014 2015#else /* CONFIG_SECURITY */ 2016 2017/* 2018 * This is the default capabilities functionality. Most of these functions 2019 * are just stubbed out, but a few must call the proper capable code. 2020 */ 2021 2022static inline int security_init(void) 2023{ 2024 return 0; 2025} 2026 2027static inline int security_ptrace (struct task_struct *parent, struct task_struct * child) 2028{ 2029 return cap_ptrace (parent, child); 2030} 2031 2032static inline int security_capget (struct task_struct *target, 2033 kernel_cap_t *effective, 2034 kernel_cap_t *inheritable, 2035 kernel_cap_t *permitted) 2036{ 2037 return cap_capget (target, effective, inheritable, permitted); 2038} 2039 2040static inline int security_capset_check (struct task_struct *target, 2041 kernel_cap_t *effective, 2042 kernel_cap_t *inheritable, 2043 kernel_cap_t *permitted) 2044{ 2045 return cap_capset_check (target, effective, inheritable, permitted); 2046} 2047 2048static inline void security_capset_set (struct task_struct *target, 2049 kernel_cap_t *effective, 2050 kernel_cap_t *inheritable, 2051 kernel_cap_t *permitted) 2052{ 2053 cap_capset_set (target, effective, inheritable, permitted); 2054} 2055 2056static inline int security_acct (struct file *file) 2057{ 2058 return 0; 2059} 2060 2061static inline int security_sysctl(struct ctl_table *table, int op) 2062{ 2063 return 0; 2064} 2065 2066static inline int security_quotactl (int cmds, int type, int id, 2067 struct super_block * sb) 2068{ 2069 return 0; 2070} 2071 2072static inline int security_quota_on (struct dentry * dentry) 2073{ 2074 return 0; 2075} 2076 2077static inline int security_syslog(int type) 2078{ 2079 return cap_syslog(type); 2080} 2081 2082static inline int security_settime(struct timespec *ts, struct timezone *tz) 2083{ 2084 return cap_settime(ts, tz); 2085} 2086 2087static inline int security_vm_enough_memory(long pages) 2088{ 2089 return cap_vm_enough_memory(pages); 2090} 2091 2092static inline int security_bprm_alloc (struct linux_binprm *bprm) 2093{ 2094 return 0; 2095} 2096 2097static inline void security_bprm_free (struct linux_binprm *bprm) 2098{ } 2099 2100static inline void security_bprm_apply_creds (struct linux_binprm *bprm, int unsafe) 2101{ 2102 cap_bprm_apply_creds (bprm, unsafe); 2103} 2104 2105static inline void security_bprm_post_apply_creds (struct linux_binprm *bprm) 2106{ 2107 return; 2108} 2109 2110static inline int security_bprm_set (struct linux_binprm *bprm) 2111{ 2112 return cap_bprm_set_security (bprm); 2113} 2114 2115static inline int security_bprm_check (struct linux_binprm *bprm) 2116{ 2117 return 0; 2118} 2119 2120static inline int security_bprm_secureexec (struct linux_binprm *bprm) 2121{ 2122 return cap_bprm_secureexec(bprm); 2123} 2124 2125static inline int security_sb_alloc (struct super_block *sb) 2126{ 2127 return 0; 2128} 2129 2130static inline void security_sb_free (struct super_block *sb) 2131{ } 2132 2133static inline int security_sb_copy_data (struct file_system_type *type, 2134 void *orig, void *copy) 2135{ 2136 return 0; 2137} 2138 2139static inline int security_sb_kern_mount (struct super_block *sb, void *data) 2140{ 2141 return 0; 2142} 2143 2144static inline int security_sb_statfs (struct super_block *sb) 2145{ 2146 return 0; 2147} 2148 2149static inline int security_sb_mount (char *dev_name, struct nameidata *nd, 2150 char *type, unsigned long flags, 2151 void *data) 2152{ 2153 return 0; 2154} 2155 2156static inline int security_sb_check_sb (struct vfsmount *mnt, 2157 struct nameidata *nd) 2158{ 2159 return 0; 2160} 2161 2162static inline int security_sb_umount (struct vfsmount *mnt, int flags) 2163{ 2164 return 0; 2165} 2166 2167static inline void security_sb_umount_close (struct vfsmount *mnt) 2168{ } 2169 2170static inline void security_sb_umount_busy (struct vfsmount *mnt) 2171{ } 2172 2173static inline void security_sb_post_remount (struct vfsmount *mnt, 2174 unsigned long flags, void *data) 2175{ } 2176 2177static inline void security_sb_post_mountroot (void) 2178{ } 2179 2180static inline void security_sb_post_addmount (struct vfsmount *mnt, 2181 struct nameidata *mountpoint_nd) 2182{ } 2183 2184static inline int security_sb_pivotroot (struct nameidata *old_nd, 2185 struct nameidata *new_nd) 2186{ 2187 return 0; 2188} 2189 2190static inline void security_sb_post_pivotroot (struct nameidata *old_nd, 2191 struct nameidata *new_nd) 2192{ } 2193 2194static inline int security_inode_alloc (struct inode *inode) 2195{ 2196 return 0; 2197} 2198 2199static inline void security_inode_free (struct inode *inode) 2200{ } 2201 2202static inline int security_inode_init_security (struct inode *inode, 2203 struct inode *dir, 2204 char **name, 2205 void **value, 2206 size_t *len) 2207{ 2208 return -EOPNOTSUPP; 2209} 2210 2211static inline int security_inode_create (struct inode *dir, 2212 struct dentry *dentry, 2213 int mode) 2214{ 2215 return 0; 2216} 2217 2218static inline int security_inode_link (struct dentry *old_dentry, 2219 struct inode *dir, 2220 struct dentry *new_dentry) 2221{ 2222 return 0; 2223} 2224 2225static inline int security_inode_unlink (struct inode *dir, 2226 struct dentry *dentry) 2227{ 2228 return 0; 2229} 2230 2231static inline int security_inode_symlink (struct inode *dir, 2232 struct dentry *dentry, 2233 const char *old_name) 2234{ 2235 return 0; 2236} 2237 2238static inline int security_inode_mkdir (struct inode *dir, 2239 struct dentry *dentry, 2240 int mode) 2241{ 2242 return 0; 2243} 2244 2245static inline int security_inode_rmdir (struct inode *dir, 2246 struct dentry *dentry) 2247{ 2248 return 0; 2249} 2250 2251static inline int security_inode_mknod (struct inode *dir, 2252 struct dentry *dentry, 2253 int mode, dev_t dev) 2254{ 2255 return 0; 2256} 2257 2258static inline int security_inode_rename (struct inode *old_dir, 2259 struct dentry *old_dentry, 2260 struct inode *new_dir, 2261 struct dentry *new_dentry) 2262{ 2263 return 0; 2264} 2265 2266static inline int security_inode_readlink (struct dentry *dentry) 2267{ 2268 return 0; 2269} 2270 2271static inline int security_inode_follow_link (struct dentry *dentry, 2272 struct nameidata *nd) 2273{ 2274 return 0; 2275} 2276 2277static inline int security_inode_permission (struct inode *inode, int mask, 2278 struct nameidata *nd) 2279{ 2280 return 0; 2281} 2282 2283static inline int security_inode_setattr (struct dentry *dentry, 2284 struct iattr *attr) 2285{ 2286 return 0; 2287} 2288 2289static inline int security_inode_getattr (struct vfsmount *mnt, 2290 struct dentry *dentry) 2291{ 2292 return 0; 2293} 2294 2295static inline void security_inode_delete (struct inode *inode) 2296{ } 2297 2298static inline int security_inode_setxattr (struct dentry *dentry, char *name, 2299 void *value, size_t size, int flags) 2300{ 2301 return cap_inode_setxattr(dentry, name, value, size, flags); 2302} 2303 2304static inline void security_inode_post_setxattr (struct dentry *dentry, char *name, 2305 void *value, size_t size, int flags) 2306{ } 2307 2308static inline int security_inode_getxattr (struct dentry *dentry, char *name) 2309{ 2310 return 0; 2311} 2312 2313static inline int security_inode_listxattr (struct dentry *dentry) 2314{ 2315 return 0; 2316} 2317 2318static inline int security_inode_removexattr (struct dentry *dentry, char *name) 2319{ 2320 return cap_inode_removexattr(dentry, name); 2321} 2322 2323static inline int security_inode_getsecurity(struct inode *inode, const char *name, void *buffer, size_t size, int err) 2324{ 2325 return -EOPNOTSUPP; 2326} 2327 2328static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 2329{ 2330 return -EOPNOTSUPP; 2331} 2332 2333static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 2334{ 2335 return 0; 2336} 2337 2338static inline int security_file_permission (struct file *file, int mask) 2339{ 2340 return 0; 2341} 2342 2343static inline int security_file_alloc (struct file *file) 2344{ 2345 return 0; 2346} 2347 2348static inline void security_file_free (struct file *file) 2349{ } 2350 2351static inline int security_file_ioctl (struct file *file, unsigned int cmd, 2352 unsigned long arg) 2353{ 2354 return 0; 2355} 2356 2357static inline int security_file_mmap (struct file *file, unsigned long reqprot, 2358 unsigned long prot, 2359 unsigned long flags) 2360{ 2361 return 0; 2362} 2363 2364static inline int security_file_mprotect (struct vm_area_struct *vma, 2365 unsigned long reqprot, 2366 unsigned long prot) 2367{ 2368 return 0; 2369} 2370 2371static inline int security_file_lock (struct file *file, unsigned int cmd) 2372{ 2373 return 0; 2374} 2375 2376static inline int security_file_fcntl (struct file *file, unsigned int cmd, 2377 unsigned long arg) 2378{ 2379 return 0; 2380} 2381 2382static inline int security_file_set_fowner (struct file *file) 2383{ 2384 return 0; 2385} 2386 2387static inline int security_file_send_sigiotask (struct task_struct *tsk, 2388 struct fown_struct *fown, 2389 int sig) 2390{ 2391 return 0; 2392} 2393 2394static inline int security_file_receive (struct file *file) 2395{ 2396 return 0; 2397} 2398 2399static inline int security_task_create (unsigned long clone_flags) 2400{ 2401 return 0; 2402} 2403 2404static inline int security_task_alloc (struct task_struct *p) 2405{ 2406 return 0; 2407} 2408 2409static inline void security_task_free (struct task_struct *p) 2410{ } 2411 2412static inline int security_task_setuid (uid_t id0, uid_t id1, uid_t id2, 2413 int flags) 2414{ 2415 return 0; 2416} 2417 2418static inline int security_task_post_setuid (uid_t old_ruid, uid_t old_euid, 2419 uid_t old_suid, int flags) 2420{ 2421 return cap_task_post_setuid (old_ruid, old_euid, old_suid, flags); 2422} 2423 2424static inline int security_task_setgid (gid_t id0, gid_t id1, gid_t id2, 2425 int flags) 2426{ 2427 return 0; 2428} 2429 2430static inline int security_task_setpgid (struct task_struct *p, pid_t pgid) 2431{ 2432 return 0; 2433} 2434 2435static inline int security_task_getpgid (struct task_struct *p) 2436{ 2437 return 0; 2438} 2439 2440static inline int security_task_getsid (struct task_struct *p) 2441{ 2442 return 0; 2443} 2444 2445static inline int security_task_setgroups (struct group_info *group_info) 2446{ 2447 return 0; 2448} 2449 2450static inline int security_task_setnice (struct task_struct *p, int nice) 2451{ 2452 return 0; 2453} 2454 2455static inline int security_task_setrlimit (unsigned int resource, 2456 struct rlimit *new_rlim) 2457{ 2458 return 0; 2459} 2460 2461static inline int security_task_setscheduler (struct task_struct *p, 2462 int policy, 2463 struct sched_param *lp) 2464{ 2465 return 0; 2466} 2467 2468static inline int security_task_getscheduler (struct task_struct *p) 2469{ 2470 return 0; 2471} 2472 2473static inline int security_task_kill (struct task_struct *p, 2474 struct siginfo *info, int sig) 2475{ 2476 return 0; 2477} 2478 2479static inline int security_task_wait (struct task_struct *p) 2480{ 2481 return 0; 2482} 2483 2484static inline int security_task_prctl (int option, unsigned long arg2, 2485 unsigned long arg3, 2486 unsigned long arg4, 2487 unsigned long arg5) 2488{ 2489 return 0; 2490} 2491 2492static inline void security_task_reparent_to_init (struct task_struct *p) 2493{ 2494 cap_task_reparent_to_init (p); 2495} 2496 2497static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 2498{ } 2499 2500static inline int security_ipc_permission (struct kern_ipc_perm *ipcp, 2501 short flag) 2502{ 2503 return 0; 2504} 2505 2506static inline int security_msg_msg_alloc (struct msg_msg * msg) 2507{ 2508 return 0; 2509} 2510 2511static inline void security_msg_msg_free (struct msg_msg * msg) 2512{ } 2513 2514static inline int security_msg_queue_alloc (struct msg_queue *msq) 2515{ 2516 return 0; 2517} 2518 2519static inline void security_msg_queue_free (struct msg_queue *msq) 2520{ } 2521 2522static inline int security_msg_queue_associate (struct msg_queue * msq, 2523 int msqflg) 2524{ 2525 return 0; 2526} 2527 2528static inline int security_msg_queue_msgctl (struct msg_queue * msq, int cmd) 2529{ 2530 return 0; 2531} 2532 2533static inline int security_msg_queue_msgsnd (struct msg_queue * msq, 2534 struct msg_msg * msg, int msqflg) 2535{ 2536 return 0; 2537} 2538 2539static inline int security_msg_queue_msgrcv (struct msg_queue * msq, 2540 struct msg_msg * msg, 2541 struct task_struct * target, 2542 long type, int mode) 2543{ 2544 return 0; 2545} 2546 2547static inline int security_shm_alloc (struct shmid_kernel *shp) 2548{ 2549 return 0; 2550} 2551 2552static inline void security_shm_free (struct shmid_kernel *shp) 2553{ } 2554 2555static inline int security_shm_associate (struct shmid_kernel * shp, 2556 int shmflg) 2557{ 2558 return 0; 2559} 2560 2561static inline int security_shm_shmctl (struct shmid_kernel * shp, int cmd) 2562{ 2563 return 0; 2564} 2565 2566static inline int security_shm_shmat (struct shmid_kernel * shp, 2567 char __user *shmaddr, int shmflg) 2568{ 2569 return 0; 2570} 2571 2572static inline int security_sem_alloc (struct sem_array *sma) 2573{ 2574 return 0; 2575} 2576 2577static inline void security_sem_free (struct sem_array *sma) 2578{ } 2579 2580static inline int security_sem_associate (struct sem_array * sma, int semflg) 2581{ 2582 return 0; 2583} 2584 2585static inline int security_sem_semctl (struct sem_array * sma, int cmd) 2586{ 2587 return 0; 2588} 2589 2590static inline int security_sem_semop (struct sem_array * sma, 2591 struct sembuf * sops, unsigned nsops, 2592 int alter) 2593{ 2594 return 0; 2595} 2596 2597static inline void security_d_instantiate (struct dentry *dentry, struct inode *inode) 2598{ } 2599 2600static inline int security_getprocattr(struct task_struct *p, char *name, void *value, size_t size) 2601{ 2602 return -EINVAL; 2603} 2604 2605static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) 2606{ 2607 return -EINVAL; 2608} 2609 2610static inline int security_netlink_send (struct sock *sk, struct sk_buff *skb) 2611{ 2612 return cap_netlink_send (sk, skb); 2613} 2614 2615static inline int security_netlink_recv (struct sk_buff *skb) 2616{ 2617 return cap_netlink_recv (skb); 2618} 2619 2620static inline struct dentry *securityfs_create_dir(const char *name, 2621 struct dentry *parent) 2622{ 2623 return ERR_PTR(-ENODEV); 2624} 2625 2626static inline struct dentry *securityfs_create_file(const char *name, 2627 mode_t mode, 2628 struct dentry *parent, 2629 void *data, 2630 struct file_operations *fops) 2631{ 2632 return ERR_PTR(-ENODEV); 2633} 2634 2635static inline void securityfs_remove(struct dentry *dentry) 2636{ 2637} 2638 2639#endif /* CONFIG_SECURITY */ 2640 2641#ifdef CONFIG_SECURITY_NETWORK 2642static inline int security_unix_stream_connect(struct socket * sock, 2643 struct socket * other, 2644 struct sock * newsk) 2645{ 2646 return security_ops->unix_stream_connect(sock, other, newsk); 2647} 2648 2649 2650static inline int security_unix_may_send(struct socket * sock, 2651 struct socket * other) 2652{ 2653 return security_ops->unix_may_send(sock, other); 2654} 2655 2656static inline int security_socket_create (int family, int type, 2657 int protocol, int kern) 2658{ 2659 return security_ops->socket_create(family, type, protocol, kern); 2660} 2661 2662static inline void security_socket_post_create(struct socket * sock, 2663 int family, 2664 int type, 2665 int protocol, int kern) 2666{ 2667 security_ops->socket_post_create(sock, family, type, 2668 protocol, kern); 2669} 2670 2671static inline int security_socket_bind(struct socket * sock, 2672 struct sockaddr * address, 2673 int addrlen) 2674{ 2675 return security_ops->socket_bind(sock, address, addrlen); 2676} 2677 2678static inline int security_socket_connect(struct socket * sock, 2679 struct sockaddr * address, 2680 int addrlen) 2681{ 2682 return security_ops->socket_connect(sock, address, addrlen); 2683} 2684 2685static inline int security_socket_listen(struct socket * sock, int backlog) 2686{ 2687 return security_ops->socket_listen(sock, backlog); 2688} 2689 2690static inline int security_socket_accept(struct socket * sock, 2691 struct socket * newsock) 2692{ 2693 return security_ops->socket_accept(sock, newsock); 2694} 2695 2696static inline void security_socket_post_accept(struct socket * sock, 2697 struct socket * newsock) 2698{ 2699 security_ops->socket_post_accept(sock, newsock); 2700} 2701 2702static inline int security_socket_sendmsg(struct socket * sock, 2703 struct msghdr * msg, int size) 2704{ 2705 return security_ops->socket_sendmsg(sock, msg, size); 2706} 2707 2708static inline int security_socket_recvmsg(struct socket * sock, 2709 struct msghdr * msg, int size, 2710 int flags) 2711{ 2712 return security_ops->socket_recvmsg(sock, msg, size, flags); 2713} 2714 2715static inline int security_socket_getsockname(struct socket * sock) 2716{ 2717 return security_ops->socket_getsockname(sock); 2718} 2719 2720static inline int security_socket_getpeername(struct socket * sock) 2721{ 2722 return security_ops->socket_getpeername(sock); 2723} 2724 2725static inline int security_socket_getsockopt(struct socket * sock, 2726 int level, int optname) 2727{ 2728 return security_ops->socket_getsockopt(sock, level, optname); 2729} 2730 2731static inline int security_socket_setsockopt(struct socket * sock, 2732 int level, int optname) 2733{ 2734 return security_ops->socket_setsockopt(sock, level, optname); 2735} 2736 2737static inline int security_socket_shutdown(struct socket * sock, int how) 2738{ 2739 return security_ops->socket_shutdown(sock, how); 2740} 2741 2742static inline int security_sock_rcv_skb (struct sock * sk, 2743 struct sk_buff * skb) 2744{ 2745 return security_ops->socket_sock_rcv_skb (sk, skb); 2746} 2747 2748static inline int security_socket_getpeersec(struct socket *sock, char __user *optval, 2749 int __user *optlen, unsigned len) 2750{ 2751 return security_ops->socket_getpeersec(sock, optval, optlen, len); 2752} 2753 2754static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 2755{ 2756 return security_ops->sk_alloc_security(sk, family, priority); 2757} 2758 2759static inline void security_sk_free(struct sock *sk) 2760{ 2761 return security_ops->sk_free_security(sk); 2762} 2763 2764static inline unsigned int security_sk_sid(struct sock *sk, struct flowi *fl, u8 dir) 2765{ 2766 return security_ops->sk_getsid(sk, fl, dir); 2767} 2768#else /* CONFIG_SECURITY_NETWORK */ 2769static inline int security_unix_stream_connect(struct socket * sock, 2770 struct socket * other, 2771 struct sock * newsk) 2772{ 2773 return 0; 2774} 2775 2776static inline int security_unix_may_send(struct socket * sock, 2777 struct socket * other) 2778{ 2779 return 0; 2780} 2781 2782static inline int security_socket_create (int family, int type, 2783 int protocol, int kern) 2784{ 2785 return 0; 2786} 2787 2788static inline void security_socket_post_create(struct socket * sock, 2789 int family, 2790 int type, 2791 int protocol, int kern) 2792{ 2793} 2794 2795static inline int security_socket_bind(struct socket * sock, 2796 struct sockaddr * address, 2797 int addrlen) 2798{ 2799 return 0; 2800} 2801 2802static inline int security_socket_connect(struct socket * sock, 2803 struct sockaddr * address, 2804 int addrlen) 2805{ 2806 return 0; 2807} 2808 2809static inline int security_socket_listen(struct socket * sock, int backlog) 2810{ 2811 return 0; 2812} 2813 2814static inline int security_socket_accept(struct socket * sock, 2815 struct socket * newsock) 2816{ 2817 return 0; 2818} 2819 2820static inline void security_socket_post_accept(struct socket * sock, 2821 struct socket * newsock) 2822{ 2823} 2824 2825static inline int security_socket_sendmsg(struct socket * sock, 2826 struct msghdr * msg, int size) 2827{ 2828 return 0; 2829} 2830 2831static inline int security_socket_recvmsg(struct socket * sock, 2832 struct msghdr * msg, int size, 2833 int flags) 2834{ 2835 return 0; 2836} 2837 2838static inline int security_socket_getsockname(struct socket * sock) 2839{ 2840 return 0; 2841} 2842 2843static inline int security_socket_getpeername(struct socket * sock) 2844{ 2845 return 0; 2846} 2847 2848static inline int security_socket_getsockopt(struct socket * sock, 2849 int level, int optname) 2850{ 2851 return 0; 2852} 2853 2854static inline int security_socket_setsockopt(struct socket * sock, 2855 int level, int optname) 2856{ 2857 return 0; 2858} 2859 2860static inline int security_socket_shutdown(struct socket * sock, int how) 2861{ 2862 return 0; 2863} 2864static inline int security_sock_rcv_skb (struct sock * sk, 2865 struct sk_buff * skb) 2866{ 2867 return 0; 2868} 2869 2870static inline int security_socket_getpeersec(struct socket *sock, char __user *optval, 2871 int __user *optlen, unsigned len) 2872{ 2873 return -ENOPROTOOPT; 2874} 2875 2876static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 2877{ 2878 return 0; 2879} 2880 2881static inline void security_sk_free(struct sock *sk) 2882{ 2883} 2884 2885static inline unsigned int security_sk_sid(struct sock *sk, struct flowi *fl, u8 dir) 2886{ 2887 return 0; 2888} 2889#endif /* CONFIG_SECURITY_NETWORK */ 2890 2891#ifdef CONFIG_SECURITY_NETWORK_XFRM 2892static inline int security_xfrm_policy_alloc(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx) 2893{ 2894 return security_ops->xfrm_policy_alloc_security(xp, sec_ctx); 2895} 2896 2897static inline int security_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new) 2898{ 2899 return security_ops->xfrm_policy_clone_security(old, new); 2900} 2901 2902static inline void security_xfrm_policy_free(struct xfrm_policy *xp) 2903{ 2904 security_ops->xfrm_policy_free_security(xp); 2905} 2906 2907static inline int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx) 2908{ 2909 return security_ops->xfrm_state_alloc_security(x, sec_ctx); 2910} 2911 2912static inline void security_xfrm_state_free(struct xfrm_state *x) 2913{ 2914 security_ops->xfrm_state_free_security(x); 2915} 2916 2917static inline int security_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir) 2918{ 2919 return security_ops->xfrm_policy_lookup(xp, sk_sid, dir); 2920} 2921#else /* CONFIG_SECURITY_NETWORK_XFRM */ 2922static inline int security_xfrm_policy_alloc(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx) 2923{ 2924 return 0; 2925} 2926 2927static inline int security_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new) 2928{ 2929 return 0; 2930} 2931 2932static inline void security_xfrm_policy_free(struct xfrm_policy *xp) 2933{ 2934} 2935 2936static inline int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx) 2937{ 2938 return 0; 2939} 2940 2941static inline void security_xfrm_state_free(struct xfrm_state *x) 2942{ 2943} 2944 2945static inline int security_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir) 2946{ 2947 return 0; 2948} 2949#endif /* CONFIG_SECURITY_NETWORK_XFRM */ 2950 2951#ifdef CONFIG_KEYS 2952#ifdef CONFIG_SECURITY 2953static inline int security_key_alloc(struct key *key) 2954{ 2955 return security_ops->key_alloc(key); 2956} 2957 2958static inline void security_key_free(struct key *key) 2959{ 2960 security_ops->key_free(key); 2961} 2962 2963static inline int security_key_permission(key_ref_t key_ref, 2964 struct task_struct *context, 2965 key_perm_t perm) 2966{ 2967 return security_ops->key_permission(key_ref, context, perm); 2968} 2969 2970#else 2971 2972static inline int security_key_alloc(struct key *key) 2973{ 2974 return 0; 2975} 2976 2977static inline void security_key_free(struct key *key) 2978{ 2979} 2980 2981static inline int security_key_permission(key_ref_t key_ref, 2982 struct task_struct *context, 2983 key_perm_t perm) 2984{ 2985 return 0; 2986} 2987 2988#endif 2989#endif /* CONFIG_KEYS */ 2990 2991#endif /* ! __LINUX_SECURITY_H */ 2992