1/* 2 * Linux Security Module interfaces 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 * Copyright (C) 2015 Intel Corporation. 10 * Copyright (C) 2015 Casey Schaufler <casey@schaufler-ca.com> 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * Due to this file being licensed under the GPL there is controversy over 18 * whether this permits you to write a module that #includes this file 19 * without placing your module under the GPL. Please consult a lawyer for 20 * advice before doing this. 21 * 22 */ 23 24#ifndef __LINUX_LSM_HOOKS_H 25#define __LINUX_LSM_HOOKS_H 26 27#include <linux/security.h> 28#include <linux/init.h> 29#include <linux/rculist.h> 30 31/** 32 * Security hooks for program execution operations. 33 * 34 * @bprm_set_creds: 35 * Save security information in the bprm->security field, typically based 36 * on information about the bprm->file, for later use by the apply_creds 37 * hook. This hook may also optionally check permissions (e.g. for 38 * transitions between security domains). 39 * This hook may be called multiple times during a single execve, e.g. for 40 * interpreters. The hook can tell whether it has already been called by 41 * checking to see if @bprm->security is non-NULL. If so, then the hook 42 * may decide either to retain the security information saved earlier or 43 * to replace it. 44 * @bprm contains the linux_binprm structure. 45 * Return 0 if the hook is successful and permission is granted. 46 * @bprm_check_security: 47 * This hook mediates the point when a search for a binary handler will 48 * begin. It allows a check the @bprm->security value which is set in the 49 * preceding set_creds call. The primary difference from set_creds is 50 * that the argv list and envp list are reliably available in @bprm. This 51 * hook may be called multiple times during a single execve; and in each 52 * pass set_creds is called first. 53 * @bprm contains the linux_binprm structure. 54 * Return 0 if the hook is successful and permission is granted. 55 * @bprm_committing_creds: 56 * Prepare to install the new security attributes of a process being 57 * transformed by an execve operation, based on the old credentials 58 * pointed to by @current->cred and the information set in @bprm->cred by 59 * the bprm_set_creds hook. @bprm points to the linux_binprm structure. 60 * This hook is a good place to perform state changes on the process such 61 * as closing open file descriptors to which access will no longer be 62 * granted when the attributes are changed. This is called immediately 63 * before commit_creds(). 64 * @bprm_committed_creds: 65 * Tidy up after the installation of the new security attributes of a 66 * process being transformed by an execve operation. The new credentials 67 * have, by this point, been set to @current->cred. @bprm points to the 68 * linux_binprm structure. This hook is a good place to perform state 69 * changes on the process such as clearing out non-inheritable signal 70 * state. This is called immediately after commit_creds(). 71 * @bprm_secureexec: 72 * Return a boolean value (0 or 1) indicating whether a "secure exec" 73 * is required. The flag is passed in the auxiliary table 74 * on the initial stack to the ELF interpreter to indicate whether libc 75 * should enable secure mode. 76 * @bprm contains the linux_binprm structure. 77 * 78 * Security hooks for filesystem operations. 79 * 80 * @sb_alloc_security: 81 * Allocate and attach a security structure to the sb->s_security field. 82 * The s_security field is initialized to NULL when the structure is 83 * allocated. 84 * @sb contains the super_block structure to be modified. 85 * Return 0 if operation was successful. 86 * @sb_free_security: 87 * Deallocate and clear the sb->s_security field. 88 * @sb contains the super_block structure to be modified. 89 * @sb_statfs: 90 * Check permission before obtaining filesystem statistics for the @mnt 91 * mountpoint. 92 * @dentry is a handle on the superblock for the filesystem. 93 * Return 0 if permission is granted. 94 * @sb_mount: 95 * Check permission before an object specified by @dev_name is mounted on 96 * the mount point named by @nd. For an ordinary mount, @dev_name 97 * identifies a device if the file system type requires a device. For a 98 * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a 99 * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the 100 * pathname of the object being mounted. 101 * @dev_name contains the name for object being mounted. 102 * @path contains the path for mount point object. 103 * @type contains the filesystem type. 104 * @flags contains the mount flags. 105 * @data contains the filesystem-specific data. 106 * Return 0 if permission is granted. 107 * @sb_copy_data: 108 * Allow mount option data to be copied prior to parsing by the filesystem, 109 * so that the security module can extract security-specific mount 110 * options cleanly (a filesystem may modify the data e.g. with strsep()). 111 * This also allows the original mount data to be stripped of security- 112 * specific options to avoid having to make filesystems aware of them. 113 * @type the type of filesystem being mounted. 114 * @orig the original mount data copied from userspace. 115 * @copy copied data which will be passed to the security module. 116 * Returns 0 if the copy was successful. 117 * @sb_remount: 118 * Extracts security system specific mount options and verifies no changes 119 * are being made to those options. 120 * @sb superblock being remounted 121 * @data contains the filesystem-specific data. 122 * Return 0 if permission is granted. 123 * @sb_umount: 124 * Check permission before the @mnt file system is unmounted. 125 * @mnt contains the mounted file system. 126 * @flags contains the unmount flags, e.g. MNT_FORCE. 127 * Return 0 if permission is granted. 128 * @sb_pivotroot: 129 * Check permission before pivoting the root filesystem. 130 * @old_path contains the path for the new location of the 131 * current root (put_old). 132 * @new_path contains the path for the new root (new_root). 133 * Return 0 if permission is granted. 134 * @sb_set_mnt_opts: 135 * Set the security relevant mount options used for a superblock 136 * @sb the superblock to set security mount options for 137 * @opts binary data structure containing all lsm mount data 138 * @sb_clone_mnt_opts: 139 * Copy all security options from a given superblock to another 140 * @oldsb old superblock which contain information to clone 141 * @newsb new superblock which needs filled in 142 * @sb_parse_opts_str: 143 * Parse a string of security data filling in the opts structure 144 * @options string containing all mount options known by the LSM 145 * @opts binary data structure usable by the LSM 146 * @dentry_init_security: 147 * Compute a context for a dentry as the inode is not yet available 148 * since NFSv4 has no label backed by an EA anyway. 149 * @dentry dentry to use in calculating the context. 150 * @mode mode used to determine resource type. 151 * @name name of the last path component used to create file 152 * @ctx pointer to place the pointer to the resulting context in. 153 * @ctxlen point to place the length of the resulting context. 154 * 155 * 156 * Security hooks for inode operations. 157 * 158 * @inode_alloc_security: 159 * Allocate and attach a security structure to @inode->i_security. The 160 * i_security field is initialized to NULL when the inode structure is 161 * allocated. 162 * @inode contains the inode structure. 163 * Return 0 if operation was successful. 164 * @inode_free_security: 165 * @inode contains the inode structure. 166 * Deallocate the inode security structure and set @inode->i_security to 167 * NULL. 168 * @inode_init_security: 169 * Obtain the security attribute name suffix and value to set on a newly 170 * created inode and set up the incore security field for the new inode. 171 * This hook is called by the fs code as part of the inode creation 172 * transaction and provides for atomic labeling of the inode, unlike 173 * the post_create/mkdir/... hooks called by the VFS. The hook function 174 * is expected to allocate the name and value via kmalloc, with the caller 175 * being responsible for calling kfree after using them. 176 * If the security module does not use security attributes or does 177 * not wish to put a security attribute on this particular inode, 178 * then it should return -EOPNOTSUPP to skip this processing. 179 * @inode contains the inode structure of the newly created inode. 180 * @dir contains the inode structure of the parent directory. 181 * @qstr contains the last path component of the new object 182 * @name will be set to the allocated name suffix (e.g. selinux). 183 * @value will be set to the allocated attribute value. 184 * @len will be set to the length of the value. 185 * Returns 0 if @name and @value have been successfully set, 186 * -EOPNOTSUPP if no security attribute is needed, or 187 * -ENOMEM on memory allocation failure. 188 * @inode_create: 189 * Check permission to create a regular file. 190 * @dir contains inode structure of the parent of the new file. 191 * @dentry contains the dentry structure for the file to be created. 192 * @mode contains the file mode of the file to be created. 193 * Return 0 if permission is granted. 194 * @inode_link: 195 * Check permission before creating a new hard link to a file. 196 * @old_dentry contains the dentry structure for an existing 197 * link to the file. 198 * @dir contains the inode structure of the parent directory 199 * of the new link. 200 * @new_dentry contains the dentry structure for the new link. 201 * Return 0 if permission is granted. 202 * @path_link: 203 * Check permission before creating a new hard link to a file. 204 * @old_dentry contains the dentry structure for an existing link 205 * to the file. 206 * @new_dir contains the path structure of the parent directory of 207 * the new link. 208 * @new_dentry contains the dentry structure for the new link. 209 * Return 0 if permission is granted. 210 * @inode_unlink: 211 * Check the permission to remove a hard link to a file. 212 * @dir contains the inode structure of parent directory of the file. 213 * @dentry contains the dentry structure for file to be unlinked. 214 * Return 0 if permission is granted. 215 * @path_unlink: 216 * Check the permission to remove a hard link to a file. 217 * @dir contains the path structure of parent directory of the file. 218 * @dentry contains the dentry structure for file to be unlinked. 219 * Return 0 if permission is granted. 220 * @inode_symlink: 221 * Check the permission to create a symbolic link to a file. 222 * @dir contains the inode structure of parent directory of 223 * the symbolic link. 224 * @dentry contains the dentry structure of the symbolic link. 225 * @old_name contains the pathname of file. 226 * Return 0 if permission is granted. 227 * @path_symlink: 228 * Check the permission to create a symbolic link to a file. 229 * @dir contains the path structure of parent directory of 230 * the symbolic link. 231 * @dentry contains the dentry structure of the symbolic link. 232 * @old_name contains the pathname of file. 233 * Return 0 if permission is granted. 234 * @inode_mkdir: 235 * Check permissions to create a new directory in the existing directory 236 * associated with inode structure @dir. 237 * @dir contains the inode structure of parent of the directory 238 * to be created. 239 * @dentry contains the dentry structure of new directory. 240 * @mode contains the mode of new directory. 241 * Return 0 if permission is granted. 242 * @path_mkdir: 243 * Check permissions to create a new directory in the existing directory 244 * associated with path structure @path. 245 * @dir contains the path structure of parent of the directory 246 * to be created. 247 * @dentry contains the dentry structure of new directory. 248 * @mode contains the mode of new directory. 249 * Return 0 if permission is granted. 250 * @inode_rmdir: 251 * Check the permission to remove a directory. 252 * @dir contains the inode structure of parent of the directory 253 * to be removed. 254 * @dentry contains the dentry structure of directory to be removed. 255 * Return 0 if permission is granted. 256 * @path_rmdir: 257 * Check the permission to remove a directory. 258 * @dir contains the path structure of parent of the directory to be 259 * removed. 260 * @dentry contains the dentry structure of directory to be removed. 261 * Return 0 if permission is granted. 262 * @inode_mknod: 263 * Check permissions when creating a special file (or a socket or a fifo 264 * file created via the mknod system call). Note that if mknod operation 265 * is being done for a regular file, then the create hook will be called 266 * and not this hook. 267 * @dir contains the inode structure of parent of the new file. 268 * @dentry contains the dentry structure of the new file. 269 * @mode contains the mode of the new file. 270 * @dev contains the device number. 271 * Return 0 if permission is granted. 272 * @path_mknod: 273 * Check permissions when creating a file. Note that this hook is called 274 * even if mknod operation is being done for a regular file. 275 * @dir contains the path structure of parent of the new file. 276 * @dentry contains the dentry structure of the new file. 277 * @mode contains the mode of the new file. 278 * @dev contains the undecoded device number. Use new_decode_dev() to get 279 * the decoded device number. 280 * Return 0 if permission is granted. 281 * @inode_rename: 282 * Check for permission to rename a file or directory. 283 * @old_dir contains the inode structure for parent of the old link. 284 * @old_dentry contains the dentry structure of the old link. 285 * @new_dir contains the inode structure for parent of the new link. 286 * @new_dentry contains the dentry structure of the new link. 287 * Return 0 if permission is granted. 288 * @path_rename: 289 * Check for permission to rename a file or directory. 290 * @old_dir contains the path structure for parent of the old link. 291 * @old_dentry contains the dentry structure of the old link. 292 * @new_dir contains the path structure for parent of the new link. 293 * @new_dentry contains the dentry structure of the new link. 294 * Return 0 if permission is granted. 295 * @path_chmod: 296 * Check for permission to change DAC's permission of a file or directory. 297 * @dentry contains the dentry structure. 298 * @mnt contains the vfsmnt structure. 299 * @mode contains DAC's mode. 300 * Return 0 if permission is granted. 301 * @path_chown: 302 * Check for permission to change owner/group of a file or directory. 303 * @path contains the path structure. 304 * @uid contains new owner's ID. 305 * @gid contains new group's ID. 306 * Return 0 if permission is granted. 307 * @path_chroot: 308 * Check for permission to change root directory. 309 * @path contains the path structure. 310 * Return 0 if permission is granted. 311 * @inode_readlink: 312 * Check the permission to read the symbolic link. 313 * @dentry contains the dentry structure for the file link. 314 * Return 0 if permission is granted. 315 * @inode_follow_link: 316 * Check permission to follow a symbolic link when looking up a pathname. 317 * @dentry contains the dentry structure for the link. 318 * @inode contains the inode, which itself is not stable in RCU-walk 319 * @rcu indicates whether we are in RCU-walk mode. 320 * Return 0 if permission is granted. 321 * @inode_permission: 322 * Check permission before accessing an inode. This hook is called by the 323 * existing Linux permission function, so a security module can use it to 324 * provide additional checking for existing Linux permission checks. 325 * Notice that this hook is called when a file is opened (as well as many 326 * other operations), whereas the file_security_ops permission hook is 327 * called when the actual read/write operations are performed. 328 * @inode contains the inode structure to check. 329 * @mask contains the permission mask. 330 * Return 0 if permission is granted. 331 * @inode_setattr: 332 * Check permission before setting file attributes. Note that the kernel 333 * call to notify_change is performed from several locations, whenever 334 * file attributes change (such as when a file is truncated, chown/chmod 335 * operations, transferring disk quotas, etc). 336 * @dentry contains the dentry structure for the file. 337 * @attr is the iattr structure containing the new file attributes. 338 * Return 0 if permission is granted. 339 * @path_truncate: 340 * Check permission before truncating a file. 341 * @path contains the path structure for the file. 342 * Return 0 if permission is granted. 343 * @inode_getattr: 344 * Check permission before obtaining file attributes. 345 * @mnt is the vfsmount where the dentry was looked up 346 * @dentry contains the dentry structure for the file. 347 * Return 0 if permission is granted. 348 * @inode_setxattr: 349 * Check permission before setting the extended attributes 350 * @value identified by @name for @dentry. 351 * Return 0 if permission is granted. 352 * @inode_post_setxattr: 353 * Update inode security field after successful setxattr operation. 354 * @value identified by @name for @dentry. 355 * @inode_getxattr: 356 * Check permission before obtaining the extended attributes 357 * identified by @name for @dentry. 358 * Return 0 if permission is granted. 359 * @inode_listxattr: 360 * Check permission before obtaining the list of extended attribute 361 * names for @dentry. 362 * Return 0 if permission is granted. 363 * @inode_removexattr: 364 * Check permission before removing the extended attribute 365 * identified by @name for @dentry. 366 * Return 0 if permission is granted. 367 * @inode_getsecurity: 368 * Retrieve a copy of the extended attribute representation of the 369 * security label associated with @name for @inode via @buffer. Note that 370 * @name is the remainder of the attribute name after the security prefix 371 * has been removed. @alloc is used to specify of the call should return a 372 * value via the buffer or just the value length Return size of buffer on 373 * success. 374 * @inode_setsecurity: 375 * Set the security label associated with @name for @inode from the 376 * extended attribute value @value. @size indicates the size of the 377 * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0. 378 * Note that @name is the remainder of the attribute name after the 379 * security. prefix has been removed. 380 * Return 0 on success. 381 * @inode_listsecurity: 382 * Copy the extended attribute names for the security labels 383 * associated with @inode into @buffer. The maximum size of @buffer 384 * is specified by @buffer_size. @buffer may be NULL to request 385 * the size of the buffer required. 386 * Returns number of bytes used/required on success. 387 * @inode_need_killpriv: 388 * Called when an inode has been changed. 389 * @dentry is the dentry being changed. 390 * Return <0 on error to abort the inode change operation. 391 * Return 0 if inode_killpriv does not need to be called. 392 * Return >0 if inode_killpriv does need to be called. 393 * @inode_killpriv: 394 * The setuid bit is being removed. Remove similar security labels. 395 * Called with the dentry->d_inode->i_mutex held. 396 * @dentry is the dentry being changed. 397 * Return 0 on success. If error is returned, then the operation 398 * causing setuid bit removal is failed. 399 * @inode_getsecid: 400 * Get the secid associated with the node. 401 * @inode contains a pointer to the inode. 402 * @secid contains a pointer to the location where result will be saved. 403 * In case of failure, @secid will be set to zero. 404 * 405 * Security hooks for file operations 406 * 407 * @file_permission: 408 * Check file permissions before accessing an open file. This hook is 409 * called by various operations that read or write files. A security 410 * module can use this hook to perform additional checking on these 411 * operations, e.g. to revalidate permissions on use to support privilege 412 * bracketing or policy changes. Notice that this hook is used when the 413 * actual read/write operations are performed, whereas the 414 * inode_security_ops hook is called when a file is opened (as well as 415 * many other operations). 416 * Caveat: Although this hook can be used to revalidate permissions for 417 * various system call operations that read or write files, it does not 418 * address the revalidation of permissions for memory-mapped files. 419 * Security modules must handle this separately if they need such 420 * revalidation. 421 * @file contains the file structure being accessed. 422 * @mask contains the requested permissions. 423 * Return 0 if permission is granted. 424 * @file_alloc_security: 425 * Allocate and attach a security structure to the file->f_security field. 426 * The security field is initialized to NULL when the structure is first 427 * created. 428 * @file contains the file structure to secure. 429 * Return 0 if the hook is successful and permission is granted. 430 * @file_free_security: 431 * Deallocate and free any security structures stored in file->f_security. 432 * @file contains the file structure being modified. 433 * @file_ioctl: 434 * @file contains the file structure. 435 * @cmd contains the operation to perform. 436 * @arg contains the operational arguments. 437 * Check permission for an ioctl operation on @file. Note that @arg 438 * sometimes represents a user space pointer; in other cases, it may be a 439 * simple integer value. When @arg represents a user space pointer, it 440 * should never be used by the security module. 441 * Return 0 if permission is granted. 442 * @mmap_addr : 443 * Check permissions for a mmap operation at @addr. 444 * @addr contains virtual address that will be used for the operation. 445 * Return 0 if permission is granted. 446 * @mmap_file : 447 * Check permissions for a mmap operation. The @file may be NULL, e.g. 448 * if mapping anonymous memory. 449 * @file contains the file structure for file to map (may be NULL). 450 * @reqprot contains the protection requested by the application. 451 * @prot contains the protection that will be applied by the kernel. 452 * @flags contains the operational flags. 453 * Return 0 if permission is granted. 454 * @file_mprotect: 455 * Check permissions before changing memory access permissions. 456 * @vma contains the memory region to modify. 457 * @reqprot contains the protection requested by the application. 458 * @prot contains the protection that will be applied by the kernel. 459 * Return 0 if permission is granted. 460 * @file_lock: 461 * Check permission before performing file locking operations. 462 * Note: this hook mediates both flock and fcntl style locks. 463 * @file contains the file structure. 464 * @cmd contains the posix-translated lock operation to perform 465 * (e.g. F_RDLCK, F_WRLCK). 466 * Return 0 if permission is granted. 467 * @file_fcntl: 468 * Check permission before allowing the file operation specified by @cmd 469 * from being performed on the file @file. Note that @arg sometimes 470 * represents a user space pointer; in other cases, it may be a simple 471 * integer value. When @arg represents a user space pointer, it should 472 * never be used by the security module. 473 * @file contains the file structure. 474 * @cmd contains the operation to be performed. 475 * @arg contains the operational arguments. 476 * Return 0 if permission is granted. 477 * @file_set_fowner: 478 * Save owner security information (typically from current->security) in 479 * file->f_security for later use by the send_sigiotask hook. 480 * @file contains the file structure to update. 481 * Return 0 on success. 482 * @file_send_sigiotask: 483 * Check permission for the file owner @fown to send SIGIO or SIGURG to the 484 * process @tsk. Note that this hook is sometimes called from interrupt. 485 * Note that the fown_struct, @fown, is never outside the context of a 486 * struct file, so the file structure (and associated security information) 487 * can always be obtained: 488 * container_of(fown, struct file, f_owner) 489 * @tsk contains the structure of task receiving signal. 490 * @fown contains the file owner information. 491 * @sig is the signal that will be sent. When 0, kernel sends SIGIO. 492 * Return 0 if permission is granted. 493 * @file_receive: 494 * This hook allows security modules to control the ability of a process 495 * to receive an open file descriptor via socket IPC. 496 * @file contains the file structure being received. 497 * Return 0 if permission is granted. 498 * @file_open 499 * Save open-time permission checking state for later use upon 500 * file_permission, and recheck access if anything has changed 501 * since inode_permission. 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_free: 511 * @task task being freed 512 * Handle release of task-related resources. (Note that this can be called 513 * from interrupt context.) 514 * @cred_alloc_blank: 515 * @cred points to the credentials. 516 * @gfp indicates the atomicity of any memory allocations. 517 * Only allocate sufficient memory and attach to @cred such that 518 * cred_transfer() will not get ENOMEM. 519 * @cred_free: 520 * @cred points to the credentials. 521 * Deallocate and clear the cred->security field in a set of credentials. 522 * @cred_prepare: 523 * @new points to the new credentials. 524 * @old points to the original credentials. 525 * @gfp indicates the atomicity of any memory allocations. 526 * Prepare a new set of credentials by copying the data from the old set. 527 * @cred_transfer: 528 * @new points to the new credentials. 529 * @old points to the original credentials. 530 * Transfer data from original creds to new creds 531 * @kernel_act_as: 532 * Set the credentials for a kernel service to act as (subjective context). 533 * @new points to the credentials to be modified. 534 * @secid specifies the security ID to be set 535 * The current task must be the one that nominated @secid. 536 * Return 0 if successful. 537 * @kernel_create_files_as: 538 * Set the file creation context in a set of credentials to be the same as 539 * the objective context of the specified inode. 540 * @new points to the credentials to be modified. 541 * @inode points to the inode to use as a reference. 542 * The current task must be the one that nominated @inode. 543 * Return 0 if successful. 544 * @kernel_module_request: 545 * Ability to trigger the kernel to automatically upcall to userspace for 546 * userspace to load a kernel module with the given name. 547 * @kmod_name name of the module requested by the kernel 548 * Return 0 if successful. 549 * @kernel_read_file: 550 * Read a file specified by userspace. 551 * @file contains the file structure pointing to the file being read 552 * by the kernel. 553 * @id kernel read file identifier 554 * Return 0 if permission is granted. 555 * @kernel_post_read_file: 556 * Read a file specified by userspace. 557 * @file contains the file structure pointing to the file being read 558 * by the kernel. 559 * @buf pointer to buffer containing the file contents. 560 * @size length of the file contents. 561 * @id kernel read file identifier 562 * Return 0 if permission is granted. 563 * @task_fix_setuid: 564 * Update the module's state after setting one or more of the user 565 * identity attributes of the current process. The @flags parameter 566 * indicates which of the set*uid system calls invoked this hook. If 567 * @new is the set of credentials that will be installed. Modifications 568 * should be made to this rather than to @current->cred. 569 * @old is the set of credentials that are being replaces 570 * @flags contains one of the LSM_SETID_* values. 571 * Return 0 on success. 572 * @task_setpgid: 573 * Check permission before setting the process group identifier of the 574 * process @p to @pgid. 575 * @p contains the task_struct for process being modified. 576 * @pgid contains the new pgid. 577 * Return 0 if permission is granted. 578 * @task_getpgid: 579 * Check permission before getting the process group identifier of the 580 * process @p. 581 * @p contains the task_struct for the process. 582 * Return 0 if permission is granted. 583 * @task_getsid: 584 * Check permission before getting the session identifier of the process 585 * @p. 586 * @p contains the task_struct for the process. 587 * Return 0 if permission is granted. 588 * @task_getsecid: 589 * Retrieve the security identifier of the process @p. 590 * @p contains the task_struct for the process and place is into @secid. 591 * In case of failure, @secid will be set to zero. 592 * 593 * @task_setnice: 594 * Check permission before setting the nice value of @p to @nice. 595 * @p contains the task_struct of process. 596 * @nice contains the new nice value. 597 * Return 0 if permission is granted. 598 * @task_setioprio 599 * Check permission before setting the ioprio value of @p to @ioprio. 600 * @p contains the task_struct of process. 601 * @ioprio contains the new ioprio value 602 * Return 0 if permission is granted. 603 * @task_getioprio 604 * Check permission before getting the ioprio value of @p. 605 * @p contains the task_struct of process. 606 * Return 0 if permission is granted. 607 * @task_setrlimit: 608 * Check permission before setting the resource limits of the current 609 * process for @resource to @new_rlim. The old resource limit values can 610 * be examined by dereferencing (current->signal->rlim + resource). 611 * @resource contains the resource whose limit is being set. 612 * @new_rlim contains the new limits for @resource. 613 * Return 0 if permission is granted. 614 * @task_setscheduler: 615 * Check permission before setting scheduling policy and/or parameters of 616 * process @p based on @policy and @lp. 617 * @p contains the task_struct for process. 618 * @policy contains the scheduling policy. 619 * @lp contains the scheduling parameters. 620 * Return 0 if permission is granted. 621 * @task_getscheduler: 622 * Check permission before obtaining scheduling information for process 623 * @p. 624 * @p contains the task_struct for process. 625 * Return 0 if permission is granted. 626 * @task_movememory 627 * Check permission before moving memory owned by process @p. 628 * @p contains the task_struct for process. 629 * Return 0 if permission is granted. 630 * @task_kill: 631 * Check permission before sending signal @sig to @p. @info can be NULL, 632 * the constant 1, or a pointer to a siginfo structure. If @info is 1 or 633 * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming 634 * from the kernel and should typically be permitted. 635 * SIGIO signals are handled separately by the send_sigiotask hook in 636 * file_security_ops. 637 * @p contains the task_struct for process. 638 * @info contains the signal information. 639 * @sig contains the signal value. 640 * @secid contains the sid of the process where the signal originated 641 * Return 0 if permission is granted. 642 * @task_wait: 643 * Check permission before allowing a process to reap a child process @p 644 * and collect its status information. 645 * @p contains the task_struct for process. 646 * Return 0 if permission is granted. 647 * @task_prctl: 648 * Check permission before performing a process control operation on the 649 * current process. 650 * @option contains the operation. 651 * @arg2 contains a argument. 652 * @arg3 contains a argument. 653 * @arg4 contains a argument. 654 * @arg5 contains a argument. 655 * Return -ENOSYS if no-one wanted to handle this op, any other value to 656 * cause prctl() to return immediately with that value. 657 * @task_to_inode: 658 * Set the security attributes for an inode based on an associated task's 659 * security attributes, e.g. for /proc/pid inodes. 660 * @p contains the task_struct for the task. 661 * @inode contains the inode structure for the inode. 662 * 663 * Security hooks for Netlink messaging. 664 * 665 * @netlink_send: 666 * Save security information for a netlink message so that permission 667 * checking can be performed when the message is processed. The security 668 * information can be saved using the eff_cap field of the 669 * netlink_skb_parms structure. Also may be used to provide fine 670 * grained control over message transmission. 671 * @sk associated sock of task sending the message. 672 * @skb contains the sk_buff structure for the netlink message. 673 * Return 0 if the information was successfully saved and message 674 * is allowed to be transmitted. 675 * 676 * Security hooks for Unix domain networking. 677 * 678 * @unix_stream_connect: 679 * Check permissions before establishing a Unix domain stream connection 680 * between @sock and @other. 681 * @sock contains the sock structure. 682 * @other contains the peer sock structure. 683 * @newsk contains the new sock structure. 684 * Return 0 if permission is granted. 685 * @unix_may_send: 686 * Check permissions before connecting or sending datagrams from @sock to 687 * @other. 688 * @sock contains the socket structure. 689 * @other contains the peer socket structure. 690 * Return 0 if permission is granted. 691 * 692 * The @unix_stream_connect and @unix_may_send hooks were necessary because 693 * Linux provides an alternative to the conventional file name space for Unix 694 * domain sockets. Whereas binding and connecting to sockets in the file name 695 * space is mediated by the typical file permissions (and caught by the mknod 696 * and permission hooks in inode_security_ops), binding and connecting to 697 * sockets in the abstract name space is completely unmediated. Sufficient 698 * control of Unix domain sockets in the abstract name space isn't possible 699 * using only the socket layer hooks, since we need to know the actual target 700 * socket, which is not looked up until we are inside the af_unix code. 701 * 702 * Security hooks for socket operations. 703 * 704 * @socket_create: 705 * Check permissions prior to creating a new socket. 706 * @family contains the requested protocol family. 707 * @type contains the requested communications type. 708 * @protocol contains the requested protocol. 709 * @kern set to 1 if a kernel socket. 710 * Return 0 if permission is granted. 711 * @socket_post_create: 712 * This hook allows a module to update or allocate a per-socket security 713 * structure. Note that the security field was not added directly to the 714 * socket structure, but rather, the socket security information is stored 715 * in the associated inode. Typically, the inode alloc_security hook will 716 * allocate and and attach security information to 717 * sock->inode->i_security. This hook may be used to update the 718 * sock->inode->i_security field with additional information that wasn't 719 * available when the inode was allocated. 720 * @sock contains the newly created socket structure. 721 * @family contains the requested protocol family. 722 * @type contains the requested communications type. 723 * @protocol contains the requested protocol. 724 * @kern set to 1 if a kernel socket. 725 * @socket_bind: 726 * Check permission before socket protocol layer bind operation is 727 * performed and the socket @sock is bound to the address specified in the 728 * @address parameter. 729 * @sock contains the socket structure. 730 * @address contains the address to bind to. 731 * @addrlen contains the length of address. 732 * Return 0 if permission is granted. 733 * @socket_connect: 734 * Check permission before socket protocol layer connect operation 735 * attempts to connect socket @sock to a remote address, @address. 736 * @sock contains the socket structure. 737 * @address contains the address of remote endpoint. 738 * @addrlen contains the length of address. 739 * Return 0 if permission is granted. 740 * @socket_listen: 741 * Check permission before socket protocol layer listen operation. 742 * @sock contains the socket structure. 743 * @backlog contains the maximum length for the pending connection queue. 744 * Return 0 if permission is granted. 745 * @socket_accept: 746 * Check permission before accepting a new connection. Note that the new 747 * socket, @newsock, has been created and some information copied to it, 748 * but the accept operation has not actually been performed. 749 * @sock contains the listening socket structure. 750 * @newsock contains the newly created server socket for connection. 751 * Return 0 if permission is granted. 752 * @socket_sendmsg: 753 * Check permission before transmitting a message to another socket. 754 * @sock contains the socket structure. 755 * @msg contains the message to be transmitted. 756 * @size contains the size of message. 757 * Return 0 if permission is granted. 758 * @socket_recvmsg: 759 * Check permission before receiving a message from a socket. 760 * @sock contains the socket structure. 761 * @msg contains the message structure. 762 * @size contains the size of message structure. 763 * @flags contains the operational flags. 764 * Return 0 if permission is granted. 765 * @socket_getsockname: 766 * Check permission before the local address (name) of the socket object 767 * @sock is retrieved. 768 * @sock contains the socket structure. 769 * Return 0 if permission is granted. 770 * @socket_getpeername: 771 * Check permission before the remote address (name) of a socket object 772 * @sock is retrieved. 773 * @sock contains the socket structure. 774 * Return 0 if permission is granted. 775 * @socket_getsockopt: 776 * Check permissions before retrieving the options associated with socket 777 * @sock. 778 * @sock contains the socket structure. 779 * @level contains the protocol level to retrieve option from. 780 * @optname contains the name of option to retrieve. 781 * Return 0 if permission is granted. 782 * @socket_setsockopt: 783 * Check permissions before setting the options associated with socket 784 * @sock. 785 * @sock contains the socket structure. 786 * @level contains the protocol level to set options for. 787 * @optname contains the name of the option to set. 788 * Return 0 if permission is granted. 789 * @socket_shutdown: 790 * Checks permission before all or part of a connection on the socket 791 * @sock is shut down. 792 * @sock contains the socket structure. 793 * @how contains the flag indicating how future sends and receives 794 * are handled. 795 * Return 0 if permission is granted. 796 * @socket_sock_rcv_skb: 797 * Check permissions on incoming network packets. This hook is distinct 798 * from Netfilter's IP input hooks since it is the first time that the 799 * incoming sk_buff @skb has been associated with a particular socket, @sk. 800 * Must not sleep inside this hook because some callers hold spinlocks. 801 * @sk contains the sock (not socket) associated with the incoming sk_buff. 802 * @skb contains the incoming network data. 803 * @socket_getpeersec_stream: 804 * This hook allows the security module to provide peer socket security 805 * state for unix or connected tcp sockets to userspace via getsockopt 806 * SO_GETPEERSEC. For tcp sockets this can be meaningful if the 807 * socket is associated with an ipsec SA. 808 * @sock is the local socket. 809 * @optval userspace memory where the security state is to be copied. 810 * @optlen userspace int where the module should copy the actual length 811 * of the security state. 812 * @len as input is the maximum length to copy to userspace provided 813 * by the caller. 814 * Return 0 if all is well, otherwise, typical getsockopt return 815 * values. 816 * @socket_getpeersec_dgram: 817 * This hook allows the security module to provide peer socket security 818 * state for udp sockets on a per-packet basis to userspace via 819 * getsockopt SO_GETPEERSEC. The application must first have indicated 820 * the IP_PASSSEC option via getsockopt. It can then retrieve the 821 * security state returned by this hook for a packet via the SCM_SECURITY 822 * ancillary message type. 823 * @skb is the skbuff for the packet being queried 824 * @secdata is a pointer to a buffer in which to copy the security data 825 * @seclen is the maximum length for @secdata 826 * Return 0 on success, error on failure. 827 * @sk_alloc_security: 828 * Allocate and attach a security structure to the sk->sk_security field, 829 * which is used to copy security attributes between local stream sockets. 830 * @sk_free_security: 831 * Deallocate security structure. 832 * @sk_clone_security: 833 * Clone/copy security structure. 834 * @sk_getsecid: 835 * Retrieve the LSM-specific secid for the sock to enable caching 836 * of network authorizations. 837 * @sock_graft: 838 * Sets the socket's isec sid to the sock's sid. 839 * @inet_conn_request: 840 * Sets the openreq's sid to socket's sid with MLS portion taken 841 * from peer sid. 842 * @inet_csk_clone: 843 * Sets the new child socket's sid to the openreq sid. 844 * @inet_conn_established: 845 * Sets the connection's peersid to the secmark on skb. 846 * @secmark_relabel_packet: 847 * check if the process should be allowed to relabel packets to 848 * the given secid 849 * @security_secmark_refcount_inc 850 * tells the LSM to increment the number of secmark labeling rules loaded 851 * @security_secmark_refcount_dec 852 * tells the LSM to decrement the number of secmark labeling rules loaded 853 * @req_classify_flow: 854 * Sets the flow's sid to the openreq sid. 855 * @tun_dev_alloc_security: 856 * This hook allows a module to allocate a security structure for a TUN 857 * device. 858 * @security pointer to a security structure pointer. 859 * Returns a zero on success, negative values on failure. 860 * @tun_dev_free_security: 861 * This hook allows a module to free the security structure for a TUN 862 * device. 863 * @security pointer to the TUN device's security structure 864 * @tun_dev_create: 865 * Check permissions prior to creating a new TUN device. 866 * @tun_dev_attach_queue: 867 * Check permissions prior to attaching to a TUN device queue. 868 * @security pointer to the TUN device's security structure. 869 * @tun_dev_attach: 870 * This hook can be used by the module to update any security state 871 * associated with the TUN device's sock structure. 872 * @sk contains the existing sock structure. 873 * @security pointer to the TUN device's security structure. 874 * @tun_dev_open: 875 * This hook can be used by the module to update any security state 876 * associated with the TUN device's security structure. 877 * @security pointer to the TUN devices's security structure. 878 * 879 * Security hooks for XFRM operations. 880 * 881 * @xfrm_policy_alloc_security: 882 * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy 883 * Database used by the XFRM system. 884 * @sec_ctx contains the security context information being provided by 885 * the user-level policy update program (e.g., setkey). 886 * Allocate a security structure to the xp->security field; the security 887 * field is initialized to NULL when the xfrm_policy is allocated. 888 * Return 0 if operation was successful (memory to allocate, legal context) 889 * @gfp is to specify the context for the allocation 890 * @xfrm_policy_clone_security: 891 * @old_ctx contains an existing xfrm_sec_ctx. 892 * @new_ctxp contains a new xfrm_sec_ctx being cloned from old. 893 * Allocate a security structure in new_ctxp that contains the 894 * information from the old_ctx structure. 895 * Return 0 if operation was successful (memory to allocate). 896 * @xfrm_policy_free_security: 897 * @ctx contains the xfrm_sec_ctx 898 * Deallocate xp->security. 899 * @xfrm_policy_delete_security: 900 * @ctx contains the xfrm_sec_ctx. 901 * Authorize deletion of xp->security. 902 * @xfrm_state_alloc: 903 * @x contains the xfrm_state being added to the Security Association 904 * Database by the XFRM system. 905 * @sec_ctx contains the security context information being provided by 906 * the user-level SA generation program (e.g., setkey or racoon). 907 * Allocate a security structure to the x->security field; the security 908 * field is initialized to NULL when the xfrm_state is allocated. Set the 909 * context to correspond to sec_ctx. Return 0 if operation was successful 910 * (memory to allocate, legal context). 911 * @xfrm_state_alloc_acquire: 912 * @x contains the xfrm_state being added to the Security Association 913 * Database by the XFRM system. 914 * @polsec contains the policy's security context. 915 * @secid contains the secid from which to take the mls portion of the 916 * context. 917 * Allocate a security structure to the x->security field; the security 918 * field is initialized to NULL when the xfrm_state is allocated. Set the 919 * context to correspond to secid. Return 0 if operation was successful 920 * (memory to allocate, legal context). 921 * @xfrm_state_free_security: 922 * @x contains the xfrm_state. 923 * Deallocate x->security. 924 * @xfrm_state_delete_security: 925 * @x contains the xfrm_state. 926 * Authorize deletion of x->security. 927 * @xfrm_policy_lookup: 928 * @ctx contains the xfrm_sec_ctx for which the access control is being 929 * checked. 930 * @fl_secid contains the flow security label that is used to authorize 931 * access to the policy xp. 932 * @dir contains the direction of the flow (input or output). 933 * Check permission when a flow selects a xfrm_policy for processing 934 * XFRMs on a packet. The hook is called when selecting either a 935 * per-socket policy or a generic xfrm policy. 936 * Return 0 if permission is granted, -ESRCH otherwise, or -errno 937 * on other errors. 938 * @xfrm_state_pol_flow_match: 939 * @x contains the state to match. 940 * @xp contains the policy to check for a match. 941 * @fl contains the flow to check for a match. 942 * Return 1 if there is a match. 943 * @xfrm_decode_session: 944 * @skb points to skb to decode. 945 * @secid points to the flow key secid to set. 946 * @ckall says if all xfrms used should be checked for same secid. 947 * Return 0 if ckall is zero or all xfrms used have the same secid. 948 * 949 * Security hooks affecting all Key Management operations 950 * 951 * @key_alloc: 952 * Permit allocation of a key and assign security data. Note that key does 953 * not have a serial number assigned at this point. 954 * @key points to the key. 955 * @flags is the allocation flags 956 * Return 0 if permission is granted, -ve error otherwise. 957 * @key_free: 958 * Notification of destruction; free security data. 959 * @key points to the key. 960 * No return value. 961 * @key_permission: 962 * See whether a specific operational right is granted to a process on a 963 * key. 964 * @key_ref refers to the key (key pointer + possession attribute bit). 965 * @cred points to the credentials to provide the context against which to 966 * evaluate the security data on the key. 967 * @perm describes the combination of permissions required of this key. 968 * Return 0 if permission is granted, -ve error otherwise. 969 * @key_getsecurity: 970 * Get a textual representation of the security context attached to a key 971 * for the purposes of honouring KEYCTL_GETSECURITY. This function 972 * allocates the storage for the NUL-terminated string and the caller 973 * should free it. 974 * @key points to the key to be queried. 975 * @_buffer points to a pointer that should be set to point to the 976 * resulting string (if no label or an error occurs). 977 * Return the length of the string (including terminating NUL) or -ve if 978 * an error. 979 * May also return 0 (and a NULL buffer pointer) if there is no label. 980 * 981 * Security hooks affecting all System V IPC operations. 982 * 983 * @ipc_permission: 984 * Check permissions for access to IPC 985 * @ipcp contains the kernel IPC permission structure 986 * @flag contains the desired (requested) permission set 987 * Return 0 if permission is granted. 988 * @ipc_getsecid: 989 * Get the secid associated with the ipc object. 990 * @ipcp contains the kernel IPC permission structure. 991 * @secid contains a pointer to the location where result will be saved. 992 * In case of failure, @secid will be set to zero. 993 * 994 * Security hooks for individual messages held in System V IPC message queues 995 * @msg_msg_alloc_security: 996 * Allocate and attach a security structure to the msg->security field. 997 * The security field is initialized to NULL when the structure is first 998 * created. 999 * @msg contains the message structure to be modified. 1000 * Return 0 if operation was successful and permission is granted.
1001 * @msg_msg_free_security: 1002 * Deallocate the security structure for this message. 1003 * @msg contains the message structure to be modified. 1004 * 1005 * Security hooks for System V IPC Message Queues 1006 * 1007 * @msg_queue_alloc_security: 1008 * Allocate and attach a security structure to the 1009 * msq->q_perm.security field. The security field is initialized to 1010 * NULL when the structure is first created. 1011 * @msq contains the message queue structure to be modified. 1012 * Return 0 if operation was successful and permission is granted. 1013 * @msg_queue_free_security: 1014 * Deallocate security structure for this message queue. 1015 * @msq contains the message queue structure to be modified. 1016 * @msg_queue_associate: 1017 * Check permission when a message queue is requested through the 1018 * msgget system call. This hook is only called when returning the 1019 * message queue identifier for an existing message queue, not when a 1020 * new message queue is created. 1021 * @msq contains the message queue to act upon. 1022 * @msqflg contains the operation control flags. 1023 * Return 0 if permission is granted. 1024 * @msg_queue_msgctl: 1025 * Check permission when a message control operation specified by @cmd 1026 * is to be performed on the message queue @msq. 1027 * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO. 1028 * @msq contains the message queue to act upon. May be NULL. 1029 * @cmd contains the operation to be performed. 1030 * Return 0 if permission is granted. 1031 * @msg_queue_msgsnd: 1032 * Check permission before a message, @msg, is enqueued on the message 1033 * queue, @msq. 1034 * @msq contains the message queue to send message to. 1035 * @msg contains the message to be enqueued. 1036 * @msqflg contains operational flags. 1037 * Return 0 if permission is granted. 1038 * @msg_queue_msgrcv: 1039 * Check permission before a message, @msg, is removed from the message 1040 * queue, @msq. The @target task structure contains a pointer to the 1041 * process that will be receiving the message (not equal to the current 1042 * process when inline receives are being performed). 1043 * @msq contains the message queue to retrieve message from. 1044 * @msg contains the message destination. 1045 * @target contains the task structure for recipient process. 1046 * @type contains the type of message requested. 1047 * @mode contains the operational flags. 1048 * Return 0 if permission is granted. 1049 * 1050 * Security hooks for System V Shared Memory Segments 1051 * 1052 * @shm_alloc_security: 1053 * Allocate and attach a security structure to the shp->shm_perm.security 1054 * field. The security field is initialized to NULL when the structure is 1055 * first created. 1056 * @shp contains the shared memory structure to be modified. 1057 * Return 0 if operation was successful and permission is granted. 1058 * @shm_free_security: 1059 * Deallocate the security struct for this memory segment. 1060 * @shp contains the shared memory structure to be modified. 1061 * @shm_associate: 1062 * Check permission when a shared memory region is requested through the 1063 * shmget system call. This hook is only called when returning the shared 1064 * memory region identifier for an existing region, not when a new shared 1065 * memory region is created. 1066 * @shp contains the shared memory structure to be modified. 1067 * @shmflg contains the operation control flags. 1068 * Return 0 if permission is granted. 1069 * @shm_shmctl: 1070 * Check permission when a shared memory control operation specified by 1071 * @cmd is to be performed on the shared memory region @shp. 1072 * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO. 1073 * @shp contains shared memory structure to be modified. 1074 * @cmd contains the operation to be performed. 1075 * Return 0 if permission is granted. 1076 * @shm_shmat: 1077 * Check permissions prior to allowing the shmat system call to attach the 1078 * shared memory segment @shp to the data segment of the calling process. 1079 * The attaching address is specified by @shmaddr. 1080 * @shp contains the shared memory structure to be modified. 1081 * @shmaddr contains the address to attach memory region to. 1082 * @shmflg contains the operational flags. 1083 * Return 0 if permission is granted. 1084 * 1085 * Security hooks for System V Semaphores 1086 * 1087 * @sem_alloc_security: 1088 * Allocate and attach a security structure to the sma->sem_perm.security 1089 * field. The security field is initialized to NULL when the structure is 1090 * first created. 1091 * @sma contains the semaphore structure 1092 * Return 0 if operation was successful and permission is granted. 1093 * @sem_free_security: 1094 * deallocate security struct for this semaphore 1095 * @sma contains the semaphore structure. 1096 * @sem_associate: 1097 * Check permission when a semaphore is requested through the semget 1098 * system call. This hook is only called when returning the semaphore 1099 * identifier for an existing semaphore, not when a new one must be 1100 * created. 1101 * @sma contains the semaphore structure. 1102 * @semflg contains the operation control flags. 1103 * Return 0 if permission is granted. 1104 * @sem_semctl: 1105 * Check permission when a semaphore operation specified by @cmd is to be 1106 * performed on the semaphore @sma. The @sma may be NULL, e.g. for 1107 * IPC_INFO or SEM_INFO. 1108 * @sma contains the semaphore structure. May be NULL. 1109 * @cmd contains the operation to be performed. 1110 * Return 0 if permission is granted. 1111 * @sem_semop 1112 * Check permissions before performing operations on members of the 1113 * semaphore set @sma. If the @alter flag is nonzero, the semaphore set 1114 * may be modified. 1115 * @sma contains the semaphore structure. 1116 * @sops contains the operations to perform. 1117 * @nsops contains the number of operations to perform. 1118 * @alter contains the flag indicating whether changes are to be made. 1119 * Return 0 if permission is granted. 1120 * 1121 * @binder_set_context_mgr 1122 * Check whether @mgr is allowed to be the binder context manager. 1123 * @mgr contains the task_struct for the task being registered. 1124 * Return 0 if permission is granted. 1125 * @binder_transaction 1126 * Check whether @from is allowed to invoke a binder transaction call 1127 * to @to. 1128 * @from contains the task_struct for the sending task. 1129 * @to contains the task_struct for the receiving task. 1130 * @binder_transfer_binder 1131 * Check whether @from is allowed to transfer a binder reference to @to. 1132 * @from contains the task_struct for the sending task. 1133 * @to contains the task_struct for the receiving task. 1134 * @binder_transfer_file 1135 * Check whether @from is allowed to transfer @file to @to. 1136 * @from contains the task_struct for the sending task. 1137 * @file contains the struct file being transferred. 1138 * @to contains the task_struct for the receiving task. 1139 * 1140 * @ptrace_access_check: 1141 * Check permission before allowing the current process to trace the 1142 * @child process. 1143 * Security modules may also want to perform a process tracing check 1144 * during an execve in the set_security or apply_creds hooks of 1145 * tracing check during an execve in the bprm_set_creds hook of 1146 * binprm_security_ops if the process is being traced and its security 1147 * attributes would be changed by the execve. 1148 * @child contains the task_struct structure for the target process. 1149 * @mode contains the PTRACE_MODE flags indicating the form of access. 1150 * Return 0 if permission is granted. 1151 * @ptrace_traceme: 1152 * Check that the @parent process has sufficient permission to trace the 1153 * current process before allowing the current process to present itself 1154 * to the @parent process for tracing. 1155 * @parent contains the task_struct structure for debugger process. 1156 * Return 0 if permission is granted. 1157 * @capget: 1158 * Get the @effective, @inheritable, and @permitted capability sets for 1159 * the @target process. The hook may also perform permission checking to 1160 * determine if the current process is allowed to see the capability sets 1161 * of the @target process. 1162 * @target contains the task_struct structure for target process. 1163 * @effective contains the effective capability set. 1164 * @inheritable contains the inheritable capability set. 1165 * @permitted contains the permitted capability set. 1166 * Return 0 if the capability sets were successfully obtained. 1167 * @capset: 1168 * Set the @effective, @inheritable, and @permitted capability sets for 1169 * the current process. 1170 * @new contains the new credentials structure for target process. 1171 * @old contains the current credentials structure for target process. 1172 * @effective contains the effective capability set. 1173 * @inheritable contains the inheritable capability set. 1174 * @permitted contains the permitted capability set. 1175 * Return 0 and update @new if permission is granted. 1176 * @capable: 1177 * Check whether the @tsk process has the @cap capability in the indicated 1178 * credentials. 1179 * @cred contains the credentials to use. 1180 * @ns contains the user namespace we want the capability in 1181 * @cap contains the capability <include/linux/capability.h>. 1182 * @audit: Whether to write an audit message or not 1183 * Return 0 if the capability is granted for @tsk. 1184 * @syslog: 1185 * Check permission before accessing the kernel message ring or changing 1186 * logging to the console. 1187 * See the syslog(2) manual page for an explanation of the @type values. 1188 * @type contains the type of action. 1189 * @from_file indicates the context of action (if it came from /proc). 1190 * Return 0 if permission is granted. 1191 * @settime: 1192 * Check permission to change the system time. 1193 * struct timespec and timezone are defined in include/linux/time.h 1194 * @ts contains new time 1195 * @tz contains new timezone 1196 * Return 0 if permission is granted. 1197 * @vm_enough_memory: 1198 * Check permissions for allocating a new virtual mapping. 1199 * @mm contains the mm struct it is being added to. 1200 * @pages contains the number of pages. 1201 * Return 0 if permission is granted. 1202 * 1203 * @ismaclabel: 1204 * Check if the extended attribute specified by @name 1205 * represents a MAC label. Returns 1 if name is a MAC 1206 * attribute otherwise returns 0. 1207 * @name full extended attribute name to check against 1208 * LSM as a MAC label. 1209 * 1210 * @secid_to_secctx: 1211 * Convert secid to security context. If secdata is NULL the length of 1212 * the result will be returned in seclen, but no secdata will be returned. 1213 * This does mean that the length could change between calls to check the 1214 * length and the next call which actually allocates and returns the 1215 * secdata. 1216 * @secid contains the security ID. 1217 * @secdata contains the pointer that stores the converted security 1218 * context. 1219 * @seclen pointer which contains the length of the data 1220 * @secctx_to_secid: 1221 * Convert security context to secid. 1222 * @secid contains the pointer to the generated security ID. 1223 * @secdata contains the security context. 1224 * 1225 * @release_secctx: 1226 * Release the security context. 1227 * @secdata contains the security context. 1228 * @seclen contains the length of the security context. 1229 * 1230 * Security hooks for Audit 1231 * 1232 * @audit_rule_init: 1233 * Allocate and initialize an LSM audit rule structure. 1234 * @field contains the required Audit action. 1235 * Fields flags are defined in include/linux/audit.h 1236 * @op contains the operator the rule uses. 1237 * @rulestr contains the context where the rule will be applied to. 1238 * @lsmrule contains a pointer to receive the result. 1239 * Return 0 if @lsmrule has been successfully set, 1240 * -EINVAL in case of an invalid rule. 1241 * 1242 * @audit_rule_known: 1243 * Specifies whether given @rule contains any fields related to 1244 * current LSM. 1245 * @rule contains the audit rule of interest. 1246 * Return 1 in case of relation found, 0 otherwise. 1247 * 1248 * @audit_rule_match: 1249 * Determine if given @secid matches a rule previously approved 1250 * by @audit_rule_known. 1251 * @secid contains the security id in question. 1252 * @field contains the field which relates to current LSM. 1253 * @op contains the operator that will be used for matching. 1254 * @rule points to the audit rule that will be checked against. 1255 * @actx points to the audit context associated with the check. 1256 * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure. 1257 * 1258 * @audit_rule_free: 1259 * Deallocate the LSM audit rule structure previously allocated by 1260 * audit_rule_init. 1261 * @rule contains the allocated rule 1262 * 1263 * @inode_invalidate_secctx: 1264 * Notify the security module that it must revalidate the security context 1265 * of an inode. 1266 * 1267 * @inode_notifysecctx: 1268 * Notify the security module of what the security context of an inode 1269 * should be. Initializes the incore security context managed by the 1270 * security module for this inode. Example usage: NFS client invokes 1271 * this hook to initialize the security context in its incore inode to the 1272 * value provided by the server for the file when the server returned the 1273 * file's attributes to the client. 1274 * 1275 * Must be called with inode->i_mutex locked. 1276 * 1277 * @inode we wish to set the security context of. 1278 * @ctx contains the string which we wish to set in the inode. 1279 * @ctxlen contains the length of @ctx. 1280 * 1281 * @inode_setsecctx: 1282 * Change the security context of an inode. Updates the 1283 * incore security context managed by the security module and invokes the 1284 * fs code as needed (via __vfs_setxattr_noperm) to update any backing 1285 * xattrs that represent the context. Example usage: NFS server invokes 1286 * this hook to change the security context in its incore inode and on the 1287 * backing filesystem to a value provided by the client on a SETATTR 1288 * operation. 1289 * 1290 * Must be called with inode->i_mutex locked. 1291 * 1292 * @dentry contains the inode we wish to set the security context of. 1293 * @ctx contains the string which we wish to set in the inode. 1294 * @ctxlen contains the length of @ctx. 1295 * 1296 * @inode_getsecctx: 1297 * On success, returns 0 and fills out @ctx and @ctxlen with the security 1298 * context for the given @inode. 1299 * 1300 * @inode we wish to get the security context of. 1301 * @ctx is a pointer in which to place the allocated security context. 1302 * @ctxlen points to the place to put the length of @ctx. 1303 * This is the main security structure. 1304 */ 1305 1306union security_list_options { 1307 int (*binder_set_context_mgr)(struct task_struct *mgr); 1308 int (*binder_transaction)(struct task_struct *from, 1309 struct task_struct *to); 1310 int (*binder_transfer_binder)(struct task_struct *from, 1311 struct task_struct *to); 1312 int (*binder_transfer_file)(struct task_struct *from, 1313 struct task_struct *to, 1314 struct file *file); 1315 1316 int (*ptrace_access_check)(struct task_struct *child, 1317 unsigned int mode); 1318 int (*ptrace_traceme)(struct task_struct *parent); 1319 int (*capget)(struct task_struct *target, kernel_cap_t *effective, 1320 kernel_cap_t *inheritable, kernel_cap_t *permitted); 1321 int (*capset)(struct cred *new, const struct cred *old, 1322 const kernel_cap_t *effective, 1323 const kernel_cap_t *inheritable, 1324 const kernel_cap_t *permitted); 1325 int (*capable)(const struct cred *cred, struct user_namespace *ns, 1326 int cap, int audit); 1327 int (*quotactl)(int cmds, int type, int id, struct super_block *sb); 1328 int (*quota_on)(struct dentry *dentry); 1329 int (*syslog)(int type); 1330 int (*settime)(const struct timespec *ts, const struct timezone *tz); 1331 int (*vm_enough_memory)(struct mm_struct *mm, long pages); 1332 1333 int (*bprm_set_creds)(struct linux_binprm *bprm); 1334 int (*bprm_check_security)(struct linux_binprm *bprm); 1335 int (*bprm_secureexec)(struct linux_binprm *bprm); 1336 void (*bprm_committing_creds)(struct linux_binprm *bprm); 1337 void (*bprm_committed_creds)(struct linux_binprm *bprm); 1338 1339 int (*sb_alloc_security)(struct super_block *sb); 1340 void (*sb_free_security)(struct super_block *sb); 1341 int (*sb_copy_data)(char *orig, char *copy); 1342 int (*sb_remount)(struct super_block *sb, void *data); 1343 int (*sb_kern_mount)(struct super_block *sb, int flags, void *data); 1344 int (*sb_show_options)(struct seq_file *m, struct super_block *sb); 1345 int (*sb_statfs)(struct dentry *dentry); 1346 int (*sb_mount)(const char *dev_name, struct path *path, 1347 const char *type, unsigned long flags, void *data); 1348 int (*sb_umount)(struct vfsmount *mnt, int flags); 1349 int (*sb_pivotroot)(struct path *old_path, struct path *new_path); 1350 int (*sb_set_mnt_opts)(struct super_block *sb, 1351 struct security_mnt_opts *opts, 1352 unsigned long kern_flags, 1353 unsigned long *set_kern_flags); 1354 int (*sb_clone_mnt_opts)(const struct super_block *oldsb, 1355 struct super_block *newsb); 1356 int (*sb_parse_opts_str)(char *options, struct security_mnt_opts *opts); 1357 int (*dentry_init_security)(struct dentry *dentry, int mode, 1358 struct qstr *name, void **ctx, 1359 u32 *ctxlen); 1360 1361 1362#ifdef CONFIG_SECURITY_PATH 1363 int (*path_unlink)(struct path *dir, struct dentry *dentry); 1364 int (*path_mkdir)(struct path *dir, struct dentry *dentry, 1365 umode_t mode); 1366 int (*path_rmdir)(struct path *dir, struct dentry *dentry); 1367 int (*path_mknod)(struct path *dir, struct dentry *dentry, 1368 umode_t mode, unsigned int dev); 1369 int (*path_truncate)(struct path *path); 1370 int (*path_symlink)(struct path *dir, struct dentry *dentry, 1371 const char *old_name); 1372 int (*path_link)(struct dentry *old_dentry, struct path *new_dir, 1373 struct dentry *new_dentry); 1374 int (*path_rename)(struct path *old_dir, struct dentry *old_dentry, 1375 struct path *new_dir, 1376 struct dentry *new_dentry); 1377 int (*path_chmod)(struct path *path, umode_t mode); 1378 int (*path_chown)(struct path *path, kuid_t uid, kgid_t gid); 1379 int (*path_chroot)(struct path *path); 1380#endif 1381 1382 int (*inode_alloc_security)(struct inode *inode); 1383 void (*inode_free_security)(struct inode *inode); 1384 int (*inode_init_security)(struct inode *inode, struct inode *dir, 1385 const struct qstr *qstr, 1386 const char **name, void **value, 1387 size_t *len); 1388 int (*inode_create)(struct inode *dir, struct dentry *dentry, 1389 umode_t mode); 1390 int (*inode_link)(struct dentry *old_dentry, struct inode *dir, 1391 struct dentry *new_dentry); 1392 int (*inode_unlink)(struct inode *dir, struct dentry *dentry); 1393 int (*inode_symlink)(struct inode *dir, struct dentry *dentry, 1394 const char *old_name); 1395 int (*inode_mkdir)(struct inode *dir, struct dentry *dentry, 1396 umode_t mode); 1397 int (*inode_rmdir)(struct inode *dir, struct dentry *dentry); 1398 int (*inode_mknod)(struct inode *dir, struct dentry *dentry, 1399 umode_t mode, dev_t dev); 1400 int (*inode_rename)(struct inode *old_dir, struct dentry *old_dentry, 1401 struct inode *new_dir, 1402 struct dentry *new_dentry); 1403 int (*inode_readlink)(struct dentry *dentry); 1404 int (*inode_follow_link)(struct dentry *dentry, struct inode *inode, 1405 bool rcu); 1406 int (*inode_permission)(struct inode *inode, int mask); 1407 int (*inode_setattr)(struct dentry *dentry, struct iattr *attr); 1408 int (*inode_getattr)(const struct path *path); 1409 int (*inode_setxattr)(struct dentry *dentry, const char *name, 1410 const void *value, size_t size, int flags); 1411 void (*inode_post_setxattr)(struct dentry *dentry, const char *name, 1412 const void *value, size_t size, 1413 int flags); 1414 int (*inode_getxattr)(struct dentry *dentry, const char *name); 1415 int (*inode_listxattr)(struct dentry *dentry); 1416 int (*inode_removexattr)(struct dentry *dentry, const char *name); 1417 int (*inode_need_killpriv)(struct dentry *dentry); 1418 int (*inode_killpriv)(struct dentry *dentry); 1419 int (*inode_getsecurity)(struct inode *inode, const char *name, 1420 void **buffer, bool alloc); 1421 int (*inode_setsecurity)(struct inode *inode, const char *name, 1422 const void *value, size_t size, 1423 int flags); 1424 int (*inode_listsecurity)(struct inode *inode, char *buffer, 1425 size_t buffer_size); 1426 void (*inode_getsecid)(struct inode *inode, u32 *secid); 1427 1428 int (*file_permission)(struct file *file, int mask); 1429 int (*file_alloc_security)(struct file *file); 1430 void (*file_free_security)(struct file *file); 1431 int (*file_ioctl)(struct file *file, unsigned int cmd, 1432 unsigned long arg); 1433 int (*mmap_addr)(unsigned long addr); 1434 int (*mmap_file)(struct file *file, unsigned long reqprot, 1435 unsigned long prot, unsigned long flags); 1436 int (*file_mprotect)(struct vm_area_struct *vma, unsigned long reqprot, 1437 unsigned long prot); 1438 int (*file_lock)(struct file *file, unsigned int cmd); 1439 int (*file_fcntl)(struct file *file, unsigned int cmd, 1440 unsigned long arg); 1441 void (*file_set_fowner)(struct file *file); 1442 int (*file_send_sigiotask)(struct task_struct *tsk, 1443 struct fown_struct *fown, int sig); 1444 int (*file_receive)(struct file *file); 1445 int (*file_open)(struct file *file, const struct cred *cred); 1446 1447 int (*task_create)(unsigned long clone_flags); 1448 void (*task_free)(struct task_struct *task); 1449 int (*cred_alloc_blank)(struct cred *cred, gfp_t gfp); 1450 void (*cred_free)(struct cred *cred); 1451 int (*cred_prepare)(struct cred *new, const struct cred *old, 1452 gfp_t gfp); 1453 void (*cred_transfer)(struct cred *new, const struct cred *old); 1454 int (*kernel_act_as)(struct cred *new, u32 secid); 1455 int (*kernel_create_files_as)(struct cred *new, struct inode *inode); 1456 int (*kernel_module_request)(char *kmod_name); 1457 int (*kernel_module_from_file)(struct file *file); 1458 int (*kernel_read_file)(struct file *file, enum kernel_read_file_id id); 1459 int (*kernel_post_read_file)(struct file *file, char *buf, loff_t size, 1460 enum kernel_read_file_id id); 1461 int (*task_fix_setuid)(struct cred *new, const struct cred *old, 1462 int flags); 1463 int (*task_setpgid)(struct task_struct *p, pid_t pgid); 1464 int (*task_getpgid)(struct task_struct *p); 1465 int (*task_getsid)(struct task_struct *p); 1466 void (*task_getsecid)(struct task_struct *p, u32 *secid); 1467 int (*task_setnice)(struct task_struct *p, int nice); 1468 int (*task_setioprio)(struct task_struct *p, int ioprio); 1469 int (*task_getioprio)(struct task_struct *p); 1470 int (*task_setrlimit)(struct task_struct *p, unsigned int resource, 1471 struct rlimit *new_rlim); 1472 int (*task_setscheduler)(struct task_struct *p); 1473 int (*task_getscheduler)(struct task_struct *p); 1474 int (*task_movememory)(struct task_struct *p); 1475 int (*task_kill)(struct task_struct *p, struct siginfo *info, 1476 int sig, u32 secid); 1477 int (*task_wait)(struct task_struct *p); 1478 int (*task_prctl)(int option, unsigned long arg2, unsigned long arg3, 1479 unsigned long arg4, unsigned long arg5); 1480 void (*task_to_inode)(struct task_struct *p, struct inode *inode); 1481 1482 int (*ipc_permission)(struct kern_ipc_perm *ipcp, short flag); 1483 void (*ipc_getsecid)(struct kern_ipc_perm *ipcp, u32 *secid); 1484 1485 int (*msg_msg_alloc_security)(struct msg_msg *msg); 1486 void (*msg_msg_free_security)(struct msg_msg *msg); 1487 1488 int (*msg_queue_alloc_security)(struct msg_queue *msq); 1489 void (*msg_queue_free_security)(struct msg_queue *msq); 1490 int (*msg_queue_associate)(struct msg_queue *msq, int msqflg); 1491 int (*msg_queue_msgctl)(struct msg_queue *msq, int cmd); 1492 int (*msg_queue_msgsnd)(struct msg_queue *msq, struct msg_msg *msg, 1493 int msqflg); 1494 int (*msg_queue_msgrcv)(struct msg_queue *msq, struct msg_msg *msg, 1495 struct task_struct *target, long type, 1496 int mode); 1497 1498 int (*shm_alloc_security)(struct shmid_kernel *shp); 1499 void (*shm_free_security)(struct shmid_kernel *shp); 1500 int (*shm_associate)(struct shmid_kernel *shp, int shmflg); 1501 int (*shm_shmctl)(struct shmid_kernel *shp, int cmd); 1502 int (*shm_shmat)(struct shmid_kernel *shp, char __user *shmaddr, 1503 int shmflg); 1504 1505 int (*sem_alloc_security)(struct sem_array *sma); 1506 void (*sem_free_security)(struct sem_array *sma); 1507 int (*sem_associate)(struct sem_array *sma, int semflg); 1508 int (*sem_semctl)(struct sem_array *sma, int cmd); 1509 int (*sem_semop)(struct sem_array *sma, struct sembuf *sops, 1510 unsigned nsops, int alter); 1511 1512 int (*netlink_send)(struct sock *sk, struct sk_buff *skb); 1513 1514 void (*d_instantiate)(struct dentry *dentry, struct inode *inode); 1515 1516 int (*getprocattr)(struct task_struct *p, char *name, char **value); 1517 int (*setprocattr)(struct task_struct *p, char *name, void *value, 1518 size_t size); 1519 int (*ismaclabel)(const char *name); 1520 int (*secid_to_secctx)(u32 secid, char **secdata, u32 *seclen); 1521 int (*secctx_to_secid)(const char *secdata, u32 seclen, u32 *secid); 1522 void (*release_secctx)(char *secdata, u32 seclen); 1523 1524 void (*inode_invalidate_secctx)(struct inode *inode); 1525 int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen); 1526 int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen); 1527 int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen); 1528 1529#ifdef CONFIG_SECURITY_NETWORK 1530 int (*unix_stream_connect)(struct sock *sock, struct sock *other, 1531 struct sock *newsk); 1532 int (*unix_may_send)(struct socket *sock, struct socket *other); 1533 1534 int (*socket_create)(int family, int type, int protocol, int kern); 1535 int (*socket_post_create)(struct socket *sock, int family, int type, 1536 int protocol, int kern); 1537 int (*socket_bind)(struct socket *sock, struct sockaddr *address, 1538 int addrlen); 1539 int (*socket_connect)(struct socket *sock, struct sockaddr *address, 1540 int addrlen); 1541 int (*socket_listen)(struct socket *sock, int backlog); 1542 int (*socket_accept)(struct socket *sock, struct socket *newsock); 1543 int (*socket_sendmsg)(struct socket *sock, struct msghdr *msg, 1544 int size); 1545 int (*socket_recvmsg)(struct socket *sock, struct msghdr *msg, 1546 int size, int flags); 1547 int (*socket_getsockname)(struct socket *sock); 1548 int (*socket_getpeername)(struct socket *sock); 1549 int (*socket_getsockopt)(struct socket *sock, int level, int optname); 1550 int (*socket_setsockopt)(struct socket *sock, int level, int optname); 1551 int (*socket_shutdown)(struct socket *sock, int how); 1552 int (*socket_sock_rcv_skb)(struct sock *sk, struct sk_buff *skb); 1553 int (*socket_getpeersec_stream)(struct socket *sock, 1554 char __user *optval, 1555 int __user *optlen, unsigned len); 1556 int (*socket_getpeersec_dgram)(struct socket *sock, 1557 struct sk_buff *skb, u32 *secid); 1558 int (*sk_alloc_security)(struct sock *sk, int family, gfp_t priority); 1559 void (*sk_free_security)(struct sock *sk); 1560 void (*sk_clone_security)(const struct sock *sk, struct sock *newsk); 1561 void (*sk_getsecid)(struct sock *sk, u32 *secid); 1562 void (*sock_graft)(struct sock *sk, struct socket *parent); 1563 int (*inet_conn_request)(struct sock *sk, struct sk_buff *skb, 1564 struct request_sock *req); 1565 void (*inet_csk_clone)(struct sock *newsk, 1566 const struct request_sock *req); 1567 void (*inet_conn_established)(struct sock *sk, struct sk_buff *skb); 1568 int (*secmark_relabel_packet)(u32 secid); 1569 void (*secmark_refcount_inc)(void); 1570 void (*secmark_refcount_dec)(void); 1571 void (*req_classify_flow)(const struct request_sock *req, 1572 struct flowi *fl); 1573 int (*tun_dev_alloc_security)(void **security); 1574 void (*tun_dev_free_security)(void *security); 1575 int (*tun_dev_create)(void); 1576 int (*tun_dev_attach_queue)(void *security); 1577 int (*tun_dev_attach)(struct sock *sk, void *security); 1578 int (*tun_dev_open)(void *security); 1579#endif /* CONFIG_SECURITY_NETWORK */ 1580 1581#ifdef CONFIG_SECURITY_NETWORK_XFRM 1582 int (*xfrm_policy_alloc_security)(struct xfrm_sec_ctx **ctxp, 1583 struct xfrm_user_sec_ctx *sec_ctx, 1584 gfp_t gfp); 1585 int (*xfrm_policy_clone_security)(struct xfrm_sec_ctx *old_ctx, 1586 struct xfrm_sec_ctx **new_ctx); 1587 void (*xfrm_policy_free_security)(struct xfrm_sec_ctx *ctx); 1588 int (*xfrm_policy_delete_security)(struct xfrm_sec_ctx *ctx); 1589 int (*xfrm_state_alloc)(struct xfrm_state *x, 1590 struct xfrm_user_sec_ctx *sec_ctx); 1591 int (*xfrm_state_alloc_acquire)(struct xfrm_state *x, 1592 struct xfrm_sec_ctx *polsec, 1593 u32 secid); 1594 void (*xfrm_state_free_security)(struct xfrm_state *x); 1595 int (*xfrm_state_delete_security)(struct xfrm_state *x); 1596 int (*xfrm_policy_lookup)(struct xfrm_sec_ctx *ctx, u32 fl_secid, 1597 u8 dir); 1598 int (*xfrm_state_pol_flow_match)(struct xfrm_state *x, 1599 struct xfrm_policy *xp, 1600 const struct flowi *fl); 1601 int (*xfrm_decode_session)(struct sk_buff *skb, u32 *secid, int ckall); 1602#endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1603 1604 /* key management security hooks */ 1605#ifdef CONFIG_KEYS 1606 int (*key_alloc)(struct key *key, const struct cred *cred, 1607 unsigned long flags); 1608 void (*key_free)(struct key *key); 1609 int (*key_permission)(key_ref_t key_ref, const struct cred *cred, 1610 unsigned perm); 1611 int (*key_getsecurity)(struct key *key, char **_buffer); 1612#endif /* CONFIG_KEYS */ 1613 1614#ifdef CONFIG_AUDIT 1615 int (*audit_rule_init)(u32 field, u32 op, char *rulestr, 1616 void **lsmrule); 1617 int (*audit_rule_known)(struct audit_krule *krule); 1618 int (*audit_rule_match)(u32 secid, u32 field, u32 op, void *lsmrule, 1619 struct audit_context *actx); 1620 void (*audit_rule_free)(void *lsmrule); 1621#endif /* CONFIG_AUDIT */ 1622}; 1623 1624struct security_hook_heads { 1625 struct list_head binder_set_context_mgr; 1626 struct list_head binder_transaction; 1627 struct list_head binder_transfer_binder; 1628 struct list_head binder_transfer_file; 1629 struct list_head ptrace_access_check; 1630 struct list_head ptrace_traceme; 1631 struct list_head capget; 1632 struct list_head capset; 1633 struct list_head capable; 1634 struct list_head quotactl; 1635 struct list_head quota_on; 1636 struct list_head syslog; 1637 struct list_head settime; 1638 struct list_head vm_enough_memory; 1639 struct list_head bprm_set_creds; 1640 struct list_head bprm_check_security; 1641 struct list_head bprm_secureexec; 1642 struct list_head bprm_committing_creds; 1643 struct list_head bprm_committed_creds; 1644 struct list_head sb_alloc_security; 1645 struct list_head sb_free_security; 1646 struct list_head sb_copy_data; 1647 struct list_head sb_remount; 1648 struct list_head sb_kern_mount; 1649 struct list_head sb_show_options; 1650 struct list_head sb_statfs; 1651 struct list_head sb_mount; 1652 struct list_head sb_umount; 1653 struct list_head sb_pivotroot; 1654 struct list_head sb_set_mnt_opts; 1655 struct list_head sb_clone_mnt_opts; 1656 struct list_head sb_parse_opts_str; 1657 struct list_head dentry_init_security; 1658#ifdef CONFIG_SECURITY_PATH 1659 struct list_head path_unlink; 1660 struct list_head path_mkdir; 1661 struct list_head path_rmdir; 1662 struct list_head path_mknod; 1663 struct list_head path_truncate; 1664 struct list_head path_symlink; 1665 struct list_head path_link; 1666 struct list_head path_rename; 1667 struct list_head path_chmod; 1668 struct list_head path_chown; 1669 struct list_head path_chroot; 1670#endif 1671 struct list_head inode_alloc_security; 1672 struct list_head inode_free_security; 1673 struct list_head inode_init_security; 1674 struct list_head inode_create; 1675 struct list_head inode_link; 1676 struct list_head inode_unlink; 1677 struct list_head inode_symlink; 1678 struct list_head inode_mkdir; 1679 struct list_head inode_rmdir; 1680 struct list_head inode_mknod; 1681 struct list_head inode_rename; 1682 struct list_head inode_readlink; 1683 struct list_head inode_follow_link; 1684 struct list_head inode_permission; 1685 struct list_head inode_setattr; 1686 struct list_head inode_getattr; 1687 struct list_head inode_setxattr; 1688 struct list_head inode_post_setxattr; 1689 struct list_head inode_getxattr; 1690 struct list_head inode_listxattr; 1691 struct list_head inode_removexattr; 1692 struct list_head inode_need_killpriv; 1693 struct list_head inode_killpriv; 1694 struct list_head inode_getsecurity; 1695 struct list_head inode_setsecurity; 1696 struct list_head inode_listsecurity; 1697 struct list_head inode_getsecid; 1698 struct list_head file_permission; 1699 struct list_head file_alloc_security; 1700 struct list_head file_free_security; 1701 struct list_head file_ioctl; 1702 struct list_head mmap_addr; 1703 struct list_head mmap_file; 1704 struct list_head file_mprotect; 1705 struct list_head file_lock; 1706 struct list_head file_fcntl; 1707 struct list_head file_set_fowner; 1708 struct list_head file_send_sigiotask; 1709 struct list_head file_receive; 1710 struct list_head file_open; 1711 struct list_head task_create; 1712 struct list_head task_free; 1713 struct list_head cred_alloc_blank; 1714 struct list_head cred_free; 1715 struct list_head cred_prepare; 1716 struct list_head cred_transfer; 1717 struct list_head kernel_act_as; 1718 struct list_head kernel_create_files_as; 1719 struct list_head kernel_read_file; 1720 struct list_head kernel_post_read_file; 1721 struct list_head kernel_module_request; 1722 struct list_head task_fix_setuid; 1723 struct list_head task_setpgid; 1724 struct list_head task_getpgid; 1725 struct list_head task_getsid; 1726 struct list_head task_getsecid; 1727 struct list_head task_setnice; 1728 struct list_head task_setioprio; 1729 struct list_head task_getioprio; 1730 struct list_head task_setrlimit; 1731 struct list_head task_setscheduler; 1732 struct list_head task_getscheduler; 1733 struct list_head task_movememory; 1734 struct list_head task_kill; 1735 struct list_head task_wait; 1736 struct list_head task_prctl; 1737 struct list_head task_to_inode; 1738 struct list_head ipc_permission; 1739 struct list_head ipc_getsecid; 1740 struct list_head msg_msg_alloc_security; 1741 struct list_head msg_msg_free_security; 1742 struct list_head msg_queue_alloc_security; 1743 struct list_head msg_queue_free_security; 1744 struct list_head msg_queue_associate; 1745 struct list_head msg_queue_msgctl; 1746 struct list_head msg_queue_msgsnd; 1747 struct list_head msg_queue_msgrcv; 1748 struct list_head shm_alloc_security; 1749 struct list_head shm_free_security; 1750 struct list_head shm_associate; 1751 struct list_head shm_shmctl; 1752 struct list_head shm_shmat; 1753 struct list_head sem_alloc_security; 1754 struct list_head sem_free_security; 1755 struct list_head sem_associate; 1756 struct list_head sem_semctl; 1757 struct list_head sem_semop; 1758 struct list_head netlink_send; 1759 struct list_head d_instantiate; 1760 struct list_head getprocattr; 1761 struct list_head setprocattr; 1762 struct list_head ismaclabel; 1763 struct list_head secid_to_secctx; 1764 struct list_head secctx_to_secid; 1765 struct list_head release_secctx; 1766 struct list_head inode_invalidate_secctx; 1767 struct list_head inode_notifysecctx; 1768 struct list_head inode_setsecctx; 1769 struct list_head inode_getsecctx; 1770#ifdef CONFIG_SECURITY_NETWORK 1771 struct list_head unix_stream_connect; 1772 struct list_head unix_may_send; 1773 struct list_head socket_create; 1774 struct list_head socket_post_create; 1775 struct list_head socket_bind; 1776 struct list_head socket_connect; 1777 struct list_head socket_listen; 1778 struct list_head socket_accept; 1779 struct list_head socket_sendmsg; 1780 struct list_head socket_recvmsg; 1781 struct list_head socket_getsockname; 1782 struct list_head socket_getpeername; 1783 struct list_head socket_getsockopt; 1784 struct list_head socket_setsockopt; 1785 struct list_head socket_shutdown; 1786 struct list_head socket_sock_rcv_skb; 1787 struct list_head socket_getpeersec_stream; 1788 struct list_head socket_getpeersec_dgram; 1789 struct list_head sk_alloc_security; 1790 struct list_head sk_free_security; 1791 struct list_head sk_clone_security; 1792 struct list_head sk_getsecid; 1793 struct list_head sock_graft; 1794 struct list_head inet_conn_request; 1795 struct list_head inet_csk_clone; 1796 struct list_head inet_conn_established; 1797 struct list_head secmark_relabel_packet; 1798 struct list_head secmark_refcount_inc; 1799 struct list_head secmark_refcount_dec; 1800 struct list_head req_classify_flow; 1801 struct list_head tun_dev_alloc_security; 1802 struct list_head tun_dev_free_security; 1803 struct list_head tun_dev_create; 1804 struct list_head tun_dev_attach_queue; 1805 struct list_head tun_dev_attach; 1806 struct list_head tun_dev_open; 1807 struct list_head skb_owned_by; 1808#endif /* CONFIG_SECURITY_NETWORK */ 1809#ifdef CONFIG_SECURITY_NETWORK_XFRM 1810 struct list_head xfrm_policy_alloc_security; 1811 struct list_head xfrm_policy_clone_security; 1812 struct list_head xfrm_policy_free_security; 1813 struct list_head xfrm_policy_delete_security; 1814 struct list_head xfrm_state_alloc; 1815 struct list_head xfrm_state_alloc_acquire; 1816 struct list_head xfrm_state_free_security; 1817 struct list_head xfrm_state_delete_security; 1818 struct list_head xfrm_policy_lookup; 1819 struct list_head xfrm_state_pol_flow_match; 1820 struct list_head xfrm_decode_session; 1821#endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1822#ifdef CONFIG_KEYS 1823 struct list_head key_alloc; 1824 struct list_head key_free; 1825 struct list_head key_permission; 1826 struct list_head key_getsecurity; 1827#endif /* CONFIG_KEYS */ 1828#ifdef CONFIG_AUDIT 1829 struct list_head audit_rule_init; 1830 struct list_head audit_rule_known; 1831 struct list_head audit_rule_match; 1832 struct list_head audit_rule_free; 1833#endif /* CONFIG_AUDIT */ 1834}; 1835 1836/* 1837 * Security module hook list structure. 1838 * For use with generic list macros for common operations. 1839 */ 1840struct security_hook_list { 1841 struct list_head list; 1842 struct list_head *head; 1843 union security_list_options hook; 1844}; 1845 1846/* 1847 * Initializing a security_hook_list structure takes 1848 * up a lot of space in a source file. This macro takes 1849 * care of the common case and reduces the amount of 1850 * text involved. 1851 */ 1852#define LSM_HOOK_INIT(HEAD, HOOK) \ 1853 { .head = &security_hook_heads.HEAD, .hook = { .HEAD = HOOK } } 1854 1855extern struct security_hook_heads security_hook_heads; 1856 1857static inline void security_add_hooks(struct security_hook_list *hooks, 1858 int count) 1859{ 1860 int i; 1861 1862 for (i = 0; i < count; i++) 1863 list_add_tail_rcu(&hooks[i].list, hooks[i].head); 1864} 1865 1866#ifdef CONFIG_SECURITY_SELINUX_DISABLE 1867/* 1868 * Assuring the safety of deleting a security module is up to 1869 * the security module involved. This may entail ordering the 1870 * module's hook list in a particular way, refusing to disable 1871 * the module once a policy is loaded or any number of other 1872 * actions better imagined than described. 1873 * 1874 * The name of the configuration option reflects the only module 1875 * that currently uses the mechanism. Any developer who thinks 1876 * disabling their module is a good idea needs to be at least as 1877 * careful as the SELinux team. 1878 */ 1879static inline void security_delete_hooks(struct security_hook_list *hooks, 1880 int count) 1881{ 1882 int i; 1883 1884 for (i = 0; i < count; i++) 1885 list_del_rcu(&hooks[i].list); 1886} 1887#endif /* CONFIG_SECURITY_SELINUX_DISABLE */ 1888 1889extern int __init security_module_enable(const char *module); 1890extern void __init capability_add_hooks(void); 1891#ifdef CONFIG_SECURITY_YAMA 1892extern void __init yama_add_hooks(void); 1893#else 1894static inline void __init yama_add_hooks(void) { } 1895#endif 1896 1897#endif /* ! __LINUX_LSM_HOOKS_H */ 1898