Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751923AbbEGUnN (ORCPT ); Thu, 7 May 2015 16:43:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51749 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751236AbbEGUnH (ORCPT ); Thu, 7 May 2015 16:43:07 -0400 From: Paul Moore To: Casey Schaufler Cc: James Morris , James Morris , LSM , LKLM , John Johansen , Tetsuo Handa , Stephen Smalley , Eric Paris , Kees Cook Subject: Re: [PATCH 3/7 v22] LSM: Remove a comment from security.h Date: Thu, 07 May 2015 16:43:05 -0400 Message-ID: <3365859.ukCHy8rHfs@sifl> Organization: Red Hat User-Agent: KMail/4.14.6 (Linux/3.16.7-gentoo; KDE/4.14.7; x86_64; ; ) In-Reply-To: <55454B82.1070300@schaufler-ca.com> References: <55454539.9020204@schaufler-ca.com> <55454B82.1070300@schaufler-ca.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 64584 Lines: 1315 On Saturday, May 02, 2015 03:11:14 PM Casey Schaufler wrote: > Subject: [PATCH 3/7 v22] LSM: Remove a comment from security.h > > Remove the large comment describing the content of the > security_operations structure from security.h. This > wasn't done in the previous (2/7) patch because it > would have exceeded the mail list size limits. > > Signed-off-by: Casey Schaufler Acked-by: Paul Moore > diff --git a/include/linux/security.h b/include/linux/security.h > index f3d42c6..a2a100e 100644 > --- a/include/linux/security.h > +++ b/include/linux/security.h > @@ -186,1276 +186,6 @@ static inline void security_free_mnt_opts(struct > security_mnt_opts *opts) opts->num_mnt_opts = 0; > } > > -/** > - * struct security_operations - main security structure > - * > - * Security module identifier. > - * > - * @name: > - * A string that acts as a unique identifier for the LSM with max number > - * of characters = SECURITY_NAME_MAX. > - * > - * Security hooks for program execution operations. > - * > - * @bprm_set_creds: > - * Save security information in the bprm->security field, typically based > - * on information about the bprm->file, for later use by the apply_creds > - * hook. This hook may also optionally check permissions (e.g. for > - * transitions between security domains). > - * This hook may be called multiple times during a single execve, e.g. for > - * interpreters. The hook can tell whether it has already been called by > - * checking to see if @bprm->security is non-NULL. If so, then the hook > - * may decide either to retain the security information saved earlier or > - * to replace it. > - * @bprm contains the linux_binprm structure. > - * Return 0 if the hook is successful and permission is granted. > - * @bprm_check_security: > - * This hook mediates the point when a search for a binary handler will > - * begin. It allows a check the @bprm->security value which is set in the > - * preceding set_creds call. The primary difference from set_creds is > - * that the argv list and envp list are reliably available in @bprm. This > - * hook may be called multiple times during a single execve; and in each > - * pass set_creds is called first. > - * @bprm contains the linux_binprm structure. > - * Return 0 if the hook is successful and permission is granted. > - * @bprm_committing_creds: > - * Prepare to install the new security attributes of a process being > - * transformed by an execve operation, based on the old credentials > - * pointed to by @current->cred and the information set in @bprm->cred by > - * the bprm_set_creds hook. @bprm points to the linux_binprm structure. > - * This hook is a good place to perform state changes on the process such > - * as closing open file descriptors to which access will no longer be > - * granted when the attributes are changed. This is called immediately > - * before commit_creds(). > - * @bprm_committed_creds: > - * Tidy up after the installation of the new security attributes of a > - * process being transformed by an execve operation. The new credentials > - * have, by this point, been set to @current->cred. @bprm points to the > - * linux_binprm structure. This hook is a good place to perform state > - * changes on the process such as clearing out non-inheritable signal > - * state. This is called immediately after commit_creds(). > - * @bprm_secureexec: > - * Return a boolean value (0 or 1) indicating whether a "secure exec" > - * is required. The flag is passed in the auxiliary table > - * on the initial stack to the ELF interpreter to indicate whether libc > - * should enable secure mode. > - * @bprm contains the linux_binprm structure. > - * > - * Security hooks for filesystem operations. > - * > - * @sb_alloc_security: > - * Allocate and attach a security structure to the sb->s_security field. > - * The s_security field is initialized to NULL when the structure is > - * allocated. > - * @sb contains the super_block structure to be modified. > - * Return 0 if operation was successful. > - * @sb_free_security: > - * Deallocate and clear the sb->s_security field. > - * @sb contains the super_block structure to be modified. > - * @sb_statfs: > - * Check permission before obtaining filesystem statistics for the @mnt > - * mountpoint. > - * @dentry is a handle on the superblock for the filesystem. > - * Return 0 if permission is granted. > - * @sb_mount: > - * Check permission before an object specified by @dev_name is mounted on > - * the mount point named by @nd. For an ordinary mount, @dev_name > - * identifies a device if the file system type requires a device. For a > - * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a > - * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the > - * pathname of the object being mounted. > - * @dev_name contains the name for object being mounted. > - * @path contains the path for mount point object. > - * @type contains the filesystem type. > - * @flags contains the mount flags. > - * @data contains the filesystem-specific data. > - * Return 0 if permission is granted. > - * @sb_copy_data: > - * Allow mount option data to be copied prior to parsing by the filesystem, > - * so that the security module can extract security-specific mount - > * options cleanly (a filesystem may modify the data e.g. with strsep()). - > * This also allows the original mount data to be stripped of security- - > * specific options to avoid having to make filesystems aware of them. - > * @type the type of filesystem being mounted. > - * @orig the original mount data copied from userspace. > - * @copy copied data which will be passed to the security module. > - * Returns 0 if the copy was successful. > - * @sb_remount: > - * Extracts security system specific mount options and verifies no changes > - * are being made to those options. > - * @sb superblock being remounted > - * @data contains the filesystem-specific data. > - * Return 0 if permission is granted. > - * @sb_umount: > - * Check permission before the @mnt file system is unmounted. > - * @mnt contains the mounted file system. > - * @flags contains the unmount flags, e.g. MNT_FORCE. > - * Return 0 if permission is granted. > - * @sb_pivotroot: > - * Check permission before pivoting the root filesystem. > - * @old_path contains the path for the new location of the current root > (put_old). - * @new_path contains the path for the new root (new_root). > - * Return 0 if permission is granted. > - * @sb_set_mnt_opts: > - * Set the security relevant mount options used for a superblock > - * @sb the superblock to set security mount options for > - * @opts binary data structure containing all lsm mount data > - * @sb_clone_mnt_opts: > - * Copy all security options from a given superblock to another > - * @oldsb old superblock which contain information to clone > - * @newsb new superblock which needs filled in > - * @sb_parse_opts_str: > - * Parse a string of security data filling in the opts structure > - * @options string containing all mount options known by the LSM > - * @opts binary data structure usable by the LSM > - * @dentry_init_security: > - * Compute a context for a dentry as the inode is not yet available > - * since NFSv4 has no label backed by an EA anyway. > - * @dentry dentry to use in calculating the context. > - * @mode mode used to determine resource type. > - * @name name of the last path component used to create file > - * @ctx pointer to place the pointer to the resulting context in. > - * @ctxlen point to place the length of the resulting context. > - * > - * > - * Security hooks for inode operations. > - * > - * @inode_alloc_security: > - * Allocate and attach a security structure to @inode->i_security. The > - * i_security field is initialized to NULL when the inode structure is > - * allocated. > - * @inode contains the inode structure. > - * Return 0 if operation was successful. > - * @inode_free_security: > - * @inode contains the inode structure. > - * Deallocate the inode security structure and set @inode->i_security to > - * NULL. > - * @inode_init_security: > - * Obtain the security attribute name suffix and value to set on a newly > - * created inode and set up the incore security field for the new inode. > - * This hook is called by the fs code as part of the inode creation > - * transaction and provides for atomic labeling of the inode, unlike > - * the post_create/mkdir/... hooks called by the VFS. The hook function > - * is expected to allocate the name and value via kmalloc, with the caller > - * being responsible for calling kfree after using them. > - * If the security module does not use security attributes or does > - * not wish to put a security attribute on this particular inode, > - * then it should return -EOPNOTSUPP to skip this processing. > - * @inode contains the inode structure of the newly created inode. > - * @dir contains the inode structure of the parent directory. > - * @qstr contains the last path component of the new object > - * @name will be set to the allocated name suffix (e.g. selinux). > - * @value will be set to the allocated attribute value. > - * @len will be set to the length of the value. > - * Returns 0 if @name and @value have been successfully set, > - * -EOPNOTSUPP if no security attribute is needed, or > - * -ENOMEM on memory allocation failure. > - * @inode_create: > - * Check permission to create a regular file. > - * @dir contains inode structure of the parent of the new file. > - * @dentry contains the dentry structure for the file to be created. > - * @mode contains the file mode of the file to be created. > - * Return 0 if permission is granted. > - * @inode_link: > - * Check permission before creating a new hard link to a file. > - * @old_dentry contains the dentry structure for an existing link to the > file. - * @dir contains the inode structure of the parent directory of the > new link. - * @new_dentry contains the dentry structure for the new link. > - * Return 0 if permission is granted. > - * @path_link: > - * Check permission before creating a new hard link to a file. > - * @old_dentry contains the dentry structure for an existing link > - * to the file. > - * @new_dir contains the path structure of the parent directory of > - * the new link. > - * @new_dentry contains the dentry structure for the new link. > - * Return 0 if permission is granted. > - * @inode_unlink: > - * Check the permission to remove a hard link to a file. > - * @dir contains the inode structure of parent directory of the file. > - * @dentry contains the dentry structure for file to be unlinked. > - * Return 0 if permission is granted. > - * @path_unlink: > - * Check the permission to remove a hard link to a file. > - * @dir contains the path structure of parent directory of the file. > - * @dentry contains the dentry structure for file to be unlinked. > - * Return 0 if permission is granted. > - * @inode_symlink: > - * Check the permission to create a symbolic link to a file. > - * @dir contains the inode structure of parent directory of the symbolic > link. - * @dentry contains the dentry structure of the symbolic link. > - * @old_name contains the pathname of file. > - * Return 0 if permission is granted. > - * @path_symlink: > - * Check the permission to create a symbolic link to a file. > - * @dir contains the path structure of parent directory of > - * the symbolic link. > - * @dentry contains the dentry structure of the symbolic link. > - * @old_name contains the pathname of file. > - * Return 0 if permission is granted. > - * @inode_mkdir: > - * Check permissions to create a new directory in the existing directory > - * associated with inode structure @dir. > - * @dir contains the inode structure of parent of the directory to be > created. - * @dentry contains the dentry structure of new directory. > - * @mode contains the mode of new directory. > - * Return 0 if permission is granted. > - * @path_mkdir: > - * Check permissions to create a new directory in the existing directory > - * associated with path structure @path. > - * @dir contains the path structure of parent of the directory > - * to be created. > - * @dentry contains the dentry structure of new directory. > - * @mode contains the mode of new directory. > - * Return 0 if permission is granted. > - * @inode_rmdir: > - * Check the permission to remove a directory. > - * @dir contains the inode structure of parent of the directory to be > removed. - * @dentry contains the dentry structure of directory to be > removed. - * Return 0 if permission is granted. > - * @path_rmdir: > - * Check the permission to remove a directory. > - * @dir contains the path structure of parent of the directory to be > - * removed. > - * @dentry contains the dentry structure of directory to be removed. > - * Return 0 if permission is granted. > - * @inode_mknod: > - * Check permissions when creating a special file (or a socket or a fifo > - * file created via the mknod system call). Note that if mknod operation > - * is being done for a regular file, then the create hook will be called > - * and not this hook. > - * @dir contains the inode structure of parent of the new file. > - * @dentry contains the dentry structure of the new file. > - * @mode contains the mode of the new file. > - * @dev contains the device number. > - * Return 0 if permission is granted. > - * @path_mknod: > - * Check permissions when creating a file. Note that this hook is called > - * even if mknod operation is being done for a regular file. > - * @dir contains the path structure of parent of the new file. > - * @dentry contains the dentry structure of the new file. > - * @mode contains the mode of the new file. > - * @dev contains the undecoded device number. Use new_decode_dev() to get > - * the decoded device number. > - * Return 0 if permission is granted. > - * @inode_rename: > - * Check for permission to rename a file or directory. > - * @old_dir contains the inode structure for parent of the old link. > - * @old_dentry contains the dentry structure of the old link. > - * @new_dir contains the inode structure for parent of the new link. > - * @new_dentry contains the dentry structure of the new link. > - * Return 0 if permission is granted. > - * @path_rename: > - * Check for permission to rename a file or directory. > - * @old_dir contains the path structure for parent of the old link. > - * @old_dentry contains the dentry structure of the old link. > - * @new_dir contains the path structure for parent of the new link. > - * @new_dentry contains the dentry structure of the new link. > - * Return 0 if permission is granted. > - * @path_chmod: > - * Check for permission to change DAC's permission of a file or directory. > - * @dentry contains the dentry structure. > - * @mnt contains the vfsmnt structure. > - * @mode contains DAC's mode. > - * Return 0 if permission is granted. > - * @path_chown: > - * Check for permission to change owner/group of a file or directory. > - * @path contains the path structure. > - * @uid contains new owner's ID. > - * @gid contains new group's ID. > - * Return 0 if permission is granted. > - * @path_chroot: > - * Check for permission to change root directory. > - * @path contains the path structure. > - * Return 0 if permission is granted. > - * @inode_readlink: > - * Check the permission to read the symbolic link. > - * @dentry contains the dentry structure for the file link. > - * Return 0 if permission is granted. > - * @inode_follow_link: > - * Check permission to follow a symbolic link when looking up a pathname. > - * @dentry contains the dentry structure for the link. > - * @nd contains the nameidata structure for the parent directory. > - * Return 0 if permission is granted. > - * @inode_permission: > - * Check permission before accessing an inode. This hook is called by the > - * existing Linux permission function, so a security module can use it to > - * provide additional checking for existing Linux permission checks. > - * Notice that this hook is called when a file is opened (as well as many > - * other operations), whereas the file_security_ops permission hook is > - * called when the actual read/write operations are performed. > - * @inode contains the inode structure to check. > - * @mask contains the permission mask. > - * Return 0 if permission is granted. > - * @inode_setattr: > - * Check permission before setting file attributes. Note that the kernel > - * call to notify_change is performed from several locations, whenever > - * file attributes change (such as when a file is truncated, chown/chmod > - * operations, transferring disk quotas, etc). > - * @dentry contains the dentry structure for the file. > - * @attr is the iattr structure containing the new file attributes. > - * Return 0 if permission is granted. > - * @path_truncate: > - * Check permission before truncating a file. > - * @path contains the path structure for the file. > - * Return 0 if permission is granted. > - * @inode_getattr: > - * Check permission before obtaining file attributes. > - * @mnt is the vfsmount where the dentry was looked up > - * @dentry contains the dentry structure for the file. > - * Return 0 if permission is granted. > - * @inode_setxattr: > - * Check permission before setting the extended attributes > - * @value identified by @name for @dentry. > - * Return 0 if permission is granted. > - * @inode_post_setxattr: > - * Update inode security field after successful setxattr operation. > - * @value identified by @name for @dentry. > - * @inode_getxattr: > - * Check permission before obtaining the extended attributes > - * identified by @name for @dentry. > - * Return 0 if permission is granted. > - * @inode_listxattr: > - * Check permission before obtaining the list of extended attribute > - * names for @dentry. > - * Return 0 if permission is granted. > - * @inode_removexattr: > - * Check permission before removing the extended attribute > - * identified by @name for @dentry. > - * Return 0 if permission is granted. > - * @inode_getsecurity: > - * Retrieve a copy of the extended attribute representation of the > - * security label associated with @name for @inode via @buffer. Note that > - * @name is the remainder of the attribute name after the security prefix > - * has been removed. @alloc is used to specify of the call should return a > - * value via the buffer or just the value length Return size of buffer on > - * success. > - * @inode_setsecurity: > - * Set the security label associated with @name for @inode from the > - * extended attribute value @value. @size indicates the size of the > - * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0. > - * Note that @name is the remainder of the attribute name after the > - * security. prefix has been removed. > - * Return 0 on success. > - * @inode_listsecurity: > - * Copy the extended attribute names for the security labels > - * associated with @inode into @buffer. The maximum size of @buffer > - * is specified by @buffer_size. @buffer may be NULL to request > - * the size of the buffer required. > - * Returns number of bytes used/required on success. > - * @inode_need_killpriv: > - * Called when an inode has been changed. > - * @dentry is the dentry being changed. > - * Return <0 on error to abort the inode change operation. > - * Return 0 if inode_killpriv does not need to be called. > - * Return >0 if inode_killpriv does need to be called. > - * @inode_killpriv: > - * The setuid bit is being removed. Remove similar security labels. > - * Called with the dentry->d_inode->i_mutex held. > - * @dentry is the dentry being changed. > - * Return 0 on success. If error is returned, then the operation > - * causing setuid bit removal is failed. > - * @inode_getsecid: > - * Get the secid associated with the node. > - * @inode contains a pointer to the inode. > - * @secid contains a pointer to the location where result will be saved. > - * In case of failure, @secid will be set to zero. > - * > - * Security hooks for file operations > - * > - * @file_permission: > - * Check file permissions before accessing an open file. This hook is > - * called by various operations that read or write files. A security > - * module can use this hook to perform additional checking on these > - * operations, e.g. to revalidate permissions on use to support privilege > - * bracketing or policy changes. Notice that this hook is used when the > - * actual read/write operations are performed, whereas the > - * inode_security_ops hook is called when a file is opened (as well as > - * many other operations). > - * Caveat: Although this hook can be used to revalidate permissions for > - * various system call operations that read or write files, it does not > - * address the revalidation of permissions for memory-mapped files. > - * Security modules must handle this separately if they need such > - * revalidation. > - * @file contains the file structure being accessed. > - * @mask contains the requested permissions. > - * Return 0 if permission is granted. > - * @file_alloc_security: > - * Allocate and attach a security structure to the file->f_security field. > - * The security field is initialized to NULL when the structure is first > - * created. > - * @file contains the file structure to secure. > - * Return 0 if the hook is successful and permission is granted. > - * @file_free_security: > - * Deallocate and free any security structures stored in file->f_security. > - * @file contains the file structure being modified. > - * @file_ioctl: > - * @file contains the file structure. > - * @cmd contains the operation to perform. > - * @arg contains the operational arguments. > - * Check permission for an ioctl operation on @file. Note that @arg > - * sometimes represents a user space pointer; in other cases, it may be a > - * simple integer value. When @arg represents a user space pointer, it > - * should never be used by the security module. > - * Return 0 if permission is granted. > - * @mmap_addr : > - * Check permissions for a mmap operation at @addr. > - * @addr contains virtual address that will be used for the operation. > - * Return 0 if permission is granted. > - * @mmap_file : > - * Check permissions for a mmap operation. The @file may be NULL, e.g. > - * if mapping anonymous memory. > - * @file contains the file structure for file to map (may be NULL). > - * @reqprot contains the protection requested by the application. > - * @prot contains the protection that will be applied by the kernel. > - * @flags contains the operational flags. > - * Return 0 if permission is granted. > - * @file_mprotect: > - * Check permissions before changing memory access permissions. > - * @vma contains the memory region to modify. > - * @reqprot contains the protection requested by the application. > - * @prot contains the protection that will be applied by the kernel. > - * Return 0 if permission is granted. > - * @file_lock: > - * Check permission before performing file locking operations. > - * Note: this hook mediates both flock and fcntl style locks. > - * @file contains the file structure. > - * @cmd contains the posix-translated lock operation to perform > - * (e.g. F_RDLCK, F_WRLCK). > - * Return 0 if permission is granted. > - * @file_fcntl: > - * Check permission before allowing the file operation specified by @cmd > - * from being performed on the file @file. Note that @arg sometimes > - * represents a user space pointer; in other cases, it may be a simple > - * integer value. When @arg represents a user space pointer, it should > - * never be used by the security module. > - * @file contains the file structure. > - * @cmd contains the operation to be performed. > - * @arg contains the operational arguments. > - * Return 0 if permission is granted. > - * @file_set_fowner: > - * Save owner security information (typically from current->security) in > - * file->f_security for later use by the send_sigiotask hook. > - * @file contains the file structure to update. > - * Return 0 on success. > - * @file_send_sigiotask: > - * Check permission for the file owner @fown to send SIGIO or SIGURG to the > - * process @tsk. Note that this hook is sometimes called from interrupt. > - * Note that the fown_struct, @fown, is never outside the context of a - > * struct file, so the file structure (and associated security information) > - * can always be obtained: > - * container_of(fown, struct file, f_owner) > - * @tsk contains the structure of task receiving signal. > - * @fown contains the file owner information. > - * @sig is the signal that will be sent. When 0, kernel sends SIGIO. > - * Return 0 if permission is granted. > - * @file_receive: > - * This hook allows security modules to control the ability of a process > - * to receive an open file descriptor via socket IPC. > - * @file contains the file structure being received. > - * Return 0 if permission is granted. > - * @file_open > - * Save open-time permission checking state for later use upon > - * file_permission, and recheck access if anything has changed > - * since inode_permission. > - * > - * Security hooks for task operations. > - * > - * @task_create: > - * Check permission before creating a child process. See the clone(2) > - * manual page for definitions of the @clone_flags. > - * @clone_flags contains the flags indicating what should be shared. > - * Return 0 if permission is granted. > - * @task_free: > - * @task task being freed > - * Handle release of task-related resources. (Note that this can be called > - * from interrupt context.) > - * @cred_alloc_blank: > - * @cred points to the credentials. > - * @gfp indicates the atomicity of any memory allocations. > - * Only allocate sufficient memory and attach to @cred such that > - * cred_transfer() will not get ENOMEM. > - * @cred_free: > - * @cred points to the credentials. > - * Deallocate and clear the cred->security field in a set of credentials. > - * @cred_prepare: > - * @new points to the new credentials. > - * @old points to the original credentials. > - * @gfp indicates the atomicity of any memory allocations. > - * Prepare a new set of credentials by copying the data from the old set. > - * @cred_transfer: > - * @new points to the new credentials. > - * @old points to the original credentials. > - * Transfer data from original creds to new creds > - * @kernel_act_as: > - * Set the credentials for a kernel service to act as (subjective context). > - * @new points to the credentials to be modified. > - * @secid specifies the security ID to be set > - * The current task must be the one that nominated @secid. > - * Return 0 if successful. > - * @kernel_create_files_as: > - * Set the file creation context in a set of credentials to be the same as > - * the objective context of the specified inode. > - * @new points to the credentials to be modified. > - * @inode points to the inode to use as a reference. > - * The current task must be the one that nominated @inode. > - * Return 0 if successful. > - * @kernel_fw_from_file: > - * Load firmware from userspace (not called for built-in firmware). > - * @file contains the file structure pointing to the file containing > - * the firmware to load. This argument will be NULL if the firmware > - * was loaded via the uevent-triggered blob-based interface exposed > - * by CONFIG_FW_LOADER_USER_HELPER. > - * @buf pointer to buffer containing firmware contents. > - * @size length of the firmware contents. > - * Return 0 if permission is granted. > - * @kernel_module_request: > - * Ability to trigger the kernel to automatically upcall to userspace for > - * userspace to load a kernel module with the given name. > - * @kmod_name name of the module requested by the kernel > - * Return 0 if successful. > - * @kernel_module_from_file: > - * Load a kernel module from userspace. > - * @file contains the file structure pointing to the file containing > - * the kernel module to load. If the module is being loaded from a blob, > - * this argument will be NULL. > - * Return 0 if permission is granted. > - * @task_fix_setuid: > - * Update the module's state after setting one or more of the user > - * identity attributes of the current process. The @flags parameter > - * indicates which of the set*uid system calls invoked this hook. If > - * @new is the set of credentials that will be installed. Modifications > - * should be made to this rather than to @current->cred. > - * @old is the set of credentials that are being replaces > - * @flags contains one of the LSM_SETID_* values. > - * Return 0 on success. > - * @task_setpgid: > - * Check permission before setting the process group identifier of the > - * process @p to @pgid. > - * @p contains the task_struct for process being modified. > - * @pgid contains the new pgid. > - * Return 0 if permission is granted. > - * @task_getpgid: > - * Check permission before getting the process group identifier of the > - * process @p. > - * @p contains the task_struct for the process. > - * Return 0 if permission is granted. > - * @task_getsid: > - * Check permission before getting the session identifier of the process > - * @p. > - * @p contains the task_struct for the process. > - * Return 0 if permission is granted. > - * @task_getsecid: > - * Retrieve the security identifier of the process @p. > - * @p contains the task_struct for the process and place is into @secid. > - * In case of failure, @secid will be set to zero. > - * > - * @task_setnice: > - * Check permission before setting the nice value of @p to @nice. > - * @p contains the task_struct of process. > - * @nice contains the new nice value. > - * Return 0 if permission is granted. > - * @task_setioprio > - * Check permission before setting the ioprio value of @p to @ioprio. > - * @p contains the task_struct of process. > - * @ioprio contains the new ioprio value > - * Return 0 if permission is granted. > - * @task_getioprio > - * Check permission before getting the ioprio value of @p. > - * @p contains the task_struct of process. > - * Return 0 if permission is granted. > - * @task_setrlimit: > - * Check permission before setting the resource limits of the current > - * process for @resource to @new_rlim. The old resource limit values can > - * be examined by dereferencing (current->signal->rlim + resource). > - * @resource contains the resource whose limit is being set. > - * @new_rlim contains the new limits for @resource. > - * Return 0 if permission is granted. > - * @task_setscheduler: > - * Check permission before setting scheduling policy and/or parameters of > - * process @p based on @policy and @lp. > - * @p contains the task_struct for process. > - * @policy contains the scheduling policy. > - * @lp contains the scheduling parameters. > - * Return 0 if permission is granted. > - * @task_getscheduler: > - * Check permission before obtaining scheduling information for process > - * @p. > - * @p contains the task_struct for process. > - * Return 0 if permission is granted. > - * @task_movememory > - * Check permission before moving memory owned by process @p. > - * @p contains the task_struct for process. > - * Return 0 if permission is granted. > - * @task_kill: > - * Check permission before sending signal @sig to @p. @info can be NULL, > - * the constant 1, or a pointer to a siginfo structure. If @info is 1 or > - * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming > - * from the kernel and should typically be permitted. > - * SIGIO signals are handled separately by the send_sigiotask hook in > - * file_security_ops. > - * @p contains the task_struct for process. > - * @info contains the signal information. > - * @sig contains the signal value. > - * @secid contains the sid of the process where the signal originated > - * Return 0 if permission is granted. > - * @task_wait: > - * Check permission before allowing a process to reap a child process @p > - * and collect its status information. > - * @p contains the task_struct for process. > - * Return 0 if permission is granted. > - * @task_prctl: > - * Check permission before performing a process control operation on the > - * current process. > - * @option contains the operation. > - * @arg2 contains a argument. > - * @arg3 contains a argument. > - * @arg4 contains a argument. > - * @arg5 contains a argument. > - * Return -ENOSYS if no-one wanted to handle this op, any other value to > - * cause prctl() to return immediately with that value. > - * @task_to_inode: > - * Set the security attributes for an inode based on an associated task's > - * security attributes, e.g. for /proc/pid inodes. > - * @p contains the task_struct for the task. > - * @inode contains the inode structure for the inode. > - * > - * Security hooks for Netlink messaging. > - * > - * @netlink_send: > - * Save security information for a netlink message so that permission > - * checking can be performed when the message is processed. The security > - * information can be saved using the eff_cap field of the > - * netlink_skb_parms structure. Also may be used to provide fine > - * grained control over message transmission. > - * @sk associated sock of task sending the message. > - * @skb contains the sk_buff structure for the netlink message. > - * Return 0 if the information was successfully saved and message > - * is allowed to be transmitted. > - * > - * Security hooks for Unix domain networking. > - * > - * @unix_stream_connect: > - * Check permissions before establishing a Unix domain stream connection > - * between @sock and @other. > - * @sock contains the sock structure. > - * @other contains the peer sock structure. > - * @newsk contains the new sock structure. > - * Return 0 if permission is granted. > - * @unix_may_send: > - * Check permissions before connecting or sending datagrams from @sock to > - * @other. > - * @sock contains the socket structure. > - * @other contains the peer socket structure. > - * Return 0 if permission is granted. > - * > - * The @unix_stream_connect and @unix_may_send hooks were necessary because > - * Linux provides an alternative to the conventional file name space for > Unix - * domain sockets. Whereas binding and connecting to sockets in the > file name - * space is mediated by the typical file permissions (and caught > by the mknod - * and permission hooks in inode_security_ops), binding and > connecting to - * sockets in the abstract name space is completely > unmediated. Sufficient - * control of Unix domain sockets in the abstract > name space isn't possible - * using only the socket layer hooks, since we > need to know the actual target - * socket, which is not looked up until we > are inside the af_unix code. - * > - * Security hooks for socket operations. > - * > - * @socket_create: > - * Check permissions prior to creating a new socket. > - * @family contains the requested protocol family. > - * @type contains the requested communications type. > - * @protocol contains the requested protocol. > - * @kern set to 1 if a kernel socket. > - * Return 0 if permission is granted. > - * @socket_post_create: > - * This hook allows a module to update or allocate a per-socket security > - * structure. Note that the security field was not added directly to the > - * socket structure, but rather, the socket security information is stored > - * in the associated inode. Typically, the inode alloc_security hook will > - * allocate and and attach security information to > - * sock->inode->i_security. This hook may be used to update the > - * sock->inode->i_security field with additional information that wasn't > - * available when the inode was allocated. > - * @sock contains the newly created socket structure. > - * @family contains the requested protocol family. > - * @type contains the requested communications type. > - * @protocol contains the requested protocol. > - * @kern set to 1 if a kernel socket. > - * @socket_bind: > - * Check permission before socket protocol layer bind operation is > - * performed and the socket @sock is bound to the address specified in the > - * @address parameter. > - * @sock contains the socket structure. > - * @address contains the address to bind to. > - * @addrlen contains the length of address. > - * Return 0 if permission is granted. > - * @socket_connect: > - * Check permission before socket protocol layer connect operation > - * attempts to connect socket @sock to a remote address, @address. > - * @sock contains the socket structure. > - * @address contains the address of remote endpoint. > - * @addrlen contains the length of address. > - * Return 0 if permission is granted. > - * @socket_listen: > - * Check permission before socket protocol layer listen operation. > - * @sock contains the socket structure. > - * @backlog contains the maximum length for the pending connection queue. > - * Return 0 if permission is granted. > - * @socket_accept: > - * Check permission before accepting a new connection. Note that the new > - * socket, @newsock, has been created and some information copied to it, > - * but the accept operation has not actually been performed. > - * @sock contains the listening socket structure. > - * @newsock contains the newly created server socket for connection. > - * Return 0 if permission is granted. > - * @socket_sendmsg: > - * Check permission before transmitting a message to another socket. > - * @sock contains the socket structure. > - * @msg contains the message to be transmitted. > - * @size contains the size of message. > - * Return 0 if permission is granted. > - * @socket_recvmsg: > - * Check permission before receiving a message from a socket. > - * @sock contains the socket structure. > - * @msg contains the message structure. > - * @size contains the size of message structure. > - * @flags contains the operational flags. > - * Return 0 if permission is granted. > - * @socket_getsockname: > - * Check permission before the local address (name) of the socket object > - * @sock is retrieved. > - * @sock contains the socket structure. > - * Return 0 if permission is granted. > - * @socket_getpeername: > - * Check permission before the remote address (name) of a socket object > - * @sock is retrieved. > - * @sock contains the socket structure. > - * Return 0 if permission is granted. > - * @socket_getsockopt: > - * Check permissions before retrieving the options associated with socket > - * @sock. > - * @sock contains the socket structure. > - * @level contains the protocol level to retrieve option from. > - * @optname contains the name of option to retrieve. > - * Return 0 if permission is granted. > - * @socket_setsockopt: > - * Check permissions before setting the options associated with socket > - * @sock. > - * @sock contains the socket structure. > - * @level contains the protocol level to set options for. > - * @optname contains the name of the option to set. > - * Return 0 if permission is granted. > - * @socket_shutdown: > - * Checks permission before all or part of a connection on the socket > - * @sock is shut down. > - * @sock contains the socket structure. > - * @how contains the flag indicating how future sends and receives are > handled. - * Return 0 if permission is granted. > - * @socket_sock_rcv_skb: > - * Check permissions on incoming network packets. This hook is distinct > - * from Netfilter's IP input hooks since it is the first time that the > - * incoming sk_buff @skb has been associated with a particular socket, @sk. > - * Must not sleep inside this hook because some callers hold spinlocks. - > * @sk contains the sock (not socket) associated with the incoming sk_buff. > - * @skb contains the incoming network data. > - * @socket_getpeersec_stream: > - * This hook allows the security module to provide peer socket security > - * state for unix or connected tcp sockets to userspace via getsockopt > - * SO_GETPEERSEC. For tcp sockets this can be meaningful if the > - * socket is associated with an ipsec SA. > - * @sock is the local socket. > - * @optval userspace memory where the security state is to be copied. > - * @optlen userspace int where the module should copy the actual length > - * of the security state. > - * @len as input is the maximum length to copy to userspace provided > - * by the caller. > - * Return 0 if all is well, otherwise, typical getsockopt return > - * values. > - * @socket_getpeersec_dgram: > - * This hook allows the security module to provide peer socket security > - * state for udp sockets on a per-packet basis to userspace via > - * getsockopt SO_GETPEERSEC. The application must first have indicated > - * the IP_PASSSEC option via getsockopt. It can then retrieve the > - * security state returned by this hook for a packet via the SCM_SECURITY > - * ancillary message type. > - * @skb is the skbuff for the packet being queried > - * @secdata is a pointer to a buffer in which to copy the security data > - * @seclen is the maximum length for @secdata > - * Return 0 on success, error on failure. > - * @sk_alloc_security: > - * Allocate and attach a security structure to the sk->sk_security field, > - * which is used to copy security attributes between local stream sockets. > - * @sk_free_security: > - * Deallocate security structure. > - * @sk_clone_security: > - * Clone/copy security structure. > - * @sk_getsecid: > - * Retrieve the LSM-specific secid for the sock to enable caching of > network - * authorizations. > - * @sock_graft: > - * Sets the socket's isec sid to the sock's sid. > - * @inet_conn_request: > - * Sets the openreq's sid to socket's sid with MLS portion taken from peer > sid. - * @inet_csk_clone: > - * Sets the new child socket's sid to the openreq sid. > - * @inet_conn_established: > - * Sets the connection's peersid to the secmark on skb. > - * @secmark_relabel_packet: > - * check if the process should be allowed to relabel packets to the given > secid - * @security_secmark_refcount_inc > - * tells the LSM to increment the number of secmark labeling rules loaded > - * @security_secmark_refcount_dec > - * tells the LSM to decrement the number of secmark labeling rules loaded > - * @req_classify_flow: > - * Sets the flow's sid to the openreq sid. > - * @tun_dev_alloc_security: > - * This hook allows a module to allocate a security structure for a TUN > - * device. > - * @security pointer to a security structure pointer. > - * Returns a zero on success, negative values on failure. > - * @tun_dev_free_security: > - * This hook allows a module to free the security structure for a TUN > - * device. > - * @security pointer to the TUN device's security structure > - * @tun_dev_create: > - * Check permissions prior to creating a new TUN device. > - * @tun_dev_attach_queue: > - * Check permissions prior to attaching to a TUN device queue. > - * @security pointer to the TUN device's security structure. > - * @tun_dev_attach: > - * This hook can be used by the module to update any security state > - * associated with the TUN device's sock structure. > - * @sk contains the existing sock structure. > - * @security pointer to the TUN device's security structure. > - * @tun_dev_open: > - * This hook can be used by the module to update any security state > - * associated with the TUN device's security structure. > - * @security pointer to the TUN devices's security structure. > - * @skb_owned_by: > - * This hook sets the packet's owning sock. > - * @skb is the packet. > - * @sk the sock which owns the packet. > - * > - * Security hooks for XFRM operations. > - * > - * @xfrm_policy_alloc_security: > - * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy > - * Database used by the XFRM system. > - * @sec_ctx contains the security context information being provided by > - * the user-level policy update program (e.g., setkey). > - * Allocate a security structure to the xp->security field; the security > - * field is initialized to NULL when the xfrm_policy is allocated. > - * Return 0 if operation was successful (memory to allocate, legal context) > - * @gfp is to specify the context for the allocation > - * @xfrm_policy_clone_security: > - * @old_ctx contains an existing xfrm_sec_ctx. > - * @new_ctxp contains a new xfrm_sec_ctx being cloned from old. > - * Allocate a security structure in new_ctxp that contains the > - * information from the old_ctx structure. > - * Return 0 if operation was successful (memory to allocate). > - * @xfrm_policy_free_security: > - * @ctx contains the xfrm_sec_ctx > - * Deallocate xp->security. > - * @xfrm_policy_delete_security: > - * @ctx contains the xfrm_sec_ctx. > - * Authorize deletion of xp->security. > - * @xfrm_state_alloc: > - * @x contains the xfrm_state being added to the Security Association > - * Database by the XFRM system. > - * @sec_ctx contains the security context information being provided by > - * the user-level SA generation program (e.g., setkey or racoon). > - * Allocate a security structure to the x->security field; the security > - * field is initialized to NULL when the xfrm_state is allocated. Set the > - * context to correspond to sec_ctx. Return 0 if operation was successful > - * (memory to allocate, legal context). > - * @xfrm_state_alloc_acquire: > - * @x contains the xfrm_state being added to the Security Association > - * Database by the XFRM system. > - * @polsec contains the policy's security context. > - * @secid contains the secid from which to take the mls portion of the > - * context. > - * Allocate a security structure to the x->security field; the security > - * field is initialized to NULL when the xfrm_state is allocated. Set the > - * context to correspond to secid. Return 0 if operation was successful > - * (memory to allocate, legal context). > - * @xfrm_state_free_security: > - * @x contains the xfrm_state. > - * Deallocate x->security. > - * @xfrm_state_delete_security: > - * @x contains the xfrm_state. > - * Authorize deletion of x->security. > - * @xfrm_policy_lookup: > - * @ctx contains the xfrm_sec_ctx for which the access control is being > - * checked. > - * @fl_secid contains the flow security label that is used to authorize > - * access to the policy xp. > - * @dir contains the direction of the flow (input or output). > - * Check permission when a flow selects a xfrm_policy for processing > - * XFRMs on a packet. The hook is called when selecting either a > - * per-socket policy or a generic xfrm policy. > - * Return 0 if permission is granted, -ESRCH otherwise, or -errno > - * on other errors. > - * @xfrm_state_pol_flow_match: > - * @x contains the state to match. > - * @xp contains the policy to check for a match. > - * @fl contains the flow to check for a match. > - * Return 1 if there is a match. > - * @xfrm_decode_session: > - * @skb points to skb to decode. > - * @secid points to the flow key secid to set. > - * @ckall says if all xfrms used should be checked for same secid. > - * Return 0 if ckall is zero or all xfrms used have the same secid. > - * > - * Security hooks affecting all Key Management operations > - * > - * @key_alloc: > - * Permit allocation of a key and assign security data. Note that key does > - * not have a serial number assigned at this point. > - * @key points to the key. > - * @flags is the allocation flags > - * Return 0 if permission is granted, -ve error otherwise. > - * @key_free: > - * Notification of destruction; free security data. > - * @key points to the key. > - * No return value. > - * @key_permission: > - * See whether a specific operational right is granted to a process on a > - * key. > - * @key_ref refers to the key (key pointer + possession attribute bit). > - * @cred points to the credentials to provide the context against which to > - * evaluate the security data on the key. > - * @perm describes the combination of permissions required of this key. > - * Return 0 if permission is granted, -ve error otherwise. > - * @key_getsecurity: > - * Get a textual representation of the security context attached to a key > - * for the purposes of honouring KEYCTL_GETSECURITY. This function > - * allocates the storage for the NUL-terminated string and the caller > - * should free it. > - * @key points to the key to be queried. > - * @_buffer points to a pointer that should be set to point to the > - * resulting string (if no label or an error occurs). > - * Return the length of the string (including terminating NUL) or -ve if > - * an error. > - * May also return 0 (and a NULL buffer pointer) if there is no label. > - * > - * Security hooks affecting all System V IPC operations. > - * > - * @ipc_permission: > - * Check permissions for access to IPC > - * @ipcp contains the kernel IPC permission structure > - * @flag contains the desired (requested) permission set > - * Return 0 if permission is granted. > - * @ipc_getsecid: > - * Get the secid associated with the ipc object. > - * @ipcp contains the kernel IPC permission structure. > - * @secid contains a pointer to the location where result will be saved. > - * In case of failure, @secid will be set to zero. > - * > - * Security hooks for individual messages held in System V IPC message > queues - * @msg_msg_alloc_security: > - * Allocate and attach a security structure to the msg->security field. > - * The security field is initialized to NULL when the structure is first > - * created. > - * @msg contains the message structure to be modified. > - * Return 0 if operation was successful and permission is granted. > - * @msg_msg_free_security: > - * Deallocate the security structure for this message. > - * @msg contains the message structure to be modified. > - * > - * Security hooks for System V IPC Message Queues > - * > - * @msg_queue_alloc_security: > - * Allocate and attach a security structure to the > - * msq->q_perm.security field. The security field is initialized to > - * NULL when the structure is first created. > - * @msq contains the message queue structure to be modified. > - * Return 0 if operation was successful and permission is granted. > - * @msg_queue_free_security: > - * Deallocate security structure for this message queue. > - * @msq contains the message queue structure to be modified. > - * @msg_queue_associate: > - * Check permission when a message queue is requested through the > - * msgget system call. This hook is only called when returning the > - * message queue identifier for an existing message queue, not when a > - * new message queue is created. > - * @msq contains the message queue to act upon. > - * @msqflg contains the operation control flags. > - * Return 0 if permission is granted. > - * @msg_queue_msgctl: > - * Check permission when a message control operation specified by @cmd > - * is to be performed on the message queue @msq. > - * The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO. > - * @msq contains the message queue to act upon. May be NULL. > - * @cmd contains the operation to be performed. > - * Return 0 if permission is granted. > - * @msg_queue_msgsnd: > - * Check permission before a message, @msg, is enqueued on the message > - * queue, @msq. > - * @msq contains the message queue to send message to. > - * @msg contains the message to be enqueued. > - * @msqflg contains operational flags. > - * Return 0 if permission is granted. > - * @msg_queue_msgrcv: > - * Check permission before a message, @msg, is removed from the message > - * queue, @msq. The @target task structure contains a pointer to the > - * process that will be receiving the message (not equal to the current > - * process when inline receives are being performed). > - * @msq contains the message queue to retrieve message from. > - * @msg contains the message destination. > - * @target contains the task structure for recipient process. > - * @type contains the type of message requested. > - * @mode contains the operational flags. > - * Return 0 if permission is granted. > - * > - * Security hooks for System V Shared Memory Segments > - * > - * @shm_alloc_security: > - * Allocate and attach a security structure to the shp->shm_perm.security > - * field. The security field is initialized to NULL when the structure is > - * first created. > - * @shp contains the shared memory structure to be modified. > - * Return 0 if operation was successful and permission is granted. > - * @shm_free_security: > - * Deallocate the security struct for this memory segment. > - * @shp contains the shared memory structure to be modified. > - * @shm_associate: > - * Check permission when a shared memory region is requested through the > - * shmget system call. This hook is only called when returning the shared > - * memory region identifier for an existing region, not when a new shared > - * memory region is created. > - * @shp contains the shared memory structure to be modified. > - * @shmflg contains the operation control flags. > - * Return 0 if permission is granted. > - * @shm_shmctl: > - * Check permission when a shared memory control operation specified by > - * @cmd is to be performed on the shared memory region @shp. > - * The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO. > - * @shp contains shared memory structure to be modified. > - * @cmd contains the operation to be performed. > - * Return 0 if permission is granted. > - * @shm_shmat: > - * Check permissions prior to allowing the shmat system call to attach the > - * shared memory segment @shp to the data segment of the calling process. > - * The attaching address is specified by @shmaddr. > - * @shp contains the shared memory structure to be modified. > - * @shmaddr contains the address to attach memory region to. > - * @shmflg contains the operational flags. > - * Return 0 if permission is granted. > - * > - * Security hooks for System V Semaphores > - * > - * @sem_alloc_security: > - * Allocate and attach a security structure to the sma->sem_perm.security > - * field. The security field is initialized to NULL when the structure is > - * first created. > - * @sma contains the semaphore structure > - * Return 0 if operation was successful and permission is granted. > - * @sem_free_security: > - * deallocate security struct for this semaphore > - * @sma contains the semaphore structure. > - * @sem_associate: > - * Check permission when a semaphore is requested through the semget > - * system call. This hook is only called when returning the semaphore > - * identifier for an existing semaphore, not when a new one must be > - * created. > - * @sma contains the semaphore structure. > - * @semflg contains the operation control flags. > - * Return 0 if permission is granted. > - * @sem_semctl: > - * Check permission when a semaphore operation specified by @cmd is to be > - * performed on the semaphore @sma. The @sma may be NULL, e.g. for > - * IPC_INFO or SEM_INFO. > - * @sma contains the semaphore structure. May be NULL. > - * @cmd contains the operation to be performed. > - * Return 0 if permission is granted. > - * @sem_semop > - * Check permissions before performing operations on members of the > - * semaphore set @sma. If the @alter flag is nonzero, the semaphore set > - * may be modified. > - * @sma contains the semaphore structure. > - * @sops contains the operations to perform. > - * @nsops contains the number of operations to perform. > - * @alter contains the flag indicating whether changes are to be made. > - * Return 0 if permission is granted. > - * > - * @binder_set_context_mgr > - * Check whether @mgr is allowed to be the binder context manager. > - * @mgr contains the task_struct for the task being registered. > - * Return 0 if permission is granted. > - * @binder_transaction > - * Check whether @from is allowed to invoke a binder transaction call > - * to @to. > - * @from contains the task_struct for the sending task. > - * @to contains the task_struct for the receiving task. > - * @binder_transfer_binder > - * Check whether @from is allowed to transfer a binder reference to @to. > - * @from contains the task_struct for the sending task. > - * @to contains the task_struct for the receiving task. > - * @binder_transfer_file > - * Check whether @from is allowed to transfer @file to @to. > - * @from contains the task_struct for the sending task. > - * @file contains the struct file being transferred. > - * @to contains the task_struct for the receiving task. > - * > - * @ptrace_access_check: > - * Check permission before allowing the current process to trace the > - * @child process. > - * Security modules may also want to perform a process tracing check > - * during an execve in the set_security or apply_creds hooks of > - * tracing check during an execve in the bprm_set_creds hook of > - * binprm_security_ops if the process is being traced and its security > - * attributes would be changed by the execve. > - * @child contains the task_struct structure for the target process. > - * @mode contains the PTRACE_MODE flags indicating the form of access. > - * Return 0 if permission is granted. > - * @ptrace_traceme: > - * Check that the @parent process has sufficient permission to trace the > - * current process before allowing the current process to present itself > - * to the @parent process for tracing. > - * @parent contains the task_struct structure for debugger process. > - * Return 0 if permission is granted. > - * @capget: > - * Get the @effective, @inheritable, and @permitted capability sets for > - * the @target process. The hook may also perform permission checking to > - * determine if the current process is allowed to see the capability sets > - * of the @target process. > - * @target contains the task_struct structure for target process. > - * @effective contains the effective capability set. > - * @inheritable contains the inheritable capability set. > - * @permitted contains the permitted capability set. > - * Return 0 if the capability sets were successfully obtained. > - * @capset: > - * Set the @effective, @inheritable, and @permitted capability sets for > - * the current process. > - * @new contains the new credentials structure for target process. > - * @old contains the current credentials structure for target process. > - * @effective contains the effective capability set. > - * @inheritable contains the inheritable capability set. > - * @permitted contains the permitted capability set. > - * Return 0 and update @new if permission is granted. > - * @capable: > - * Check whether the @tsk process has the @cap capability in the indicated > - * credentials. > - * @cred contains the credentials to use. > - * @ns contains the user namespace we want the capability in > - * @cap contains the capability . > - * @audit: Whether to write an audit message or not > - * Return 0 if the capability is granted for @tsk. > - * @syslog: > - * Check permission before accessing the kernel message ring or changing > - * logging to the console. > - * See the syslog(2) manual page for an explanation of the @type values. > - * @type contains the type of action. > - * @from_file indicates the context of action (if it came from /proc). > - * Return 0 if permission is granted. > - * @settime: > - * Check permission to change the system time. > - * struct timespec and timezone are defined in include/linux/time.h > - * @ts contains new time > - * @tz contains new timezone > - * Return 0 if permission is granted. > - * @vm_enough_memory: > - * Check permissions for allocating a new virtual mapping. > - * @mm contains the mm struct it is being added to. > - * @pages contains the number of pages. > - * Return 0 if permission is granted. > - * > - * @ismaclabel: > - * Check if the extended attribute specified by @name > - * represents a MAC label. Returns 1 if name is a MAC > - * attribute otherwise returns 0. > - * @name full extended attribute name to check against > - * LSM as a MAC label. > - * > - * @secid_to_secctx: > - * Convert secid to security context. If secdata is NULL the length of > - * the result will be returned in seclen, but no secdata will be returned. > - * This does mean that the length could change between calls to check the > - * length and the next call which actually allocates and returns the > secdata. - * @secid contains the security ID. > - * @secdata contains the pointer that stores the converted security > context. - * @seclen pointer which contains the length of the data > - * @secctx_to_secid: > - * Convert security context to secid. > - * @secid contains the pointer to the generated security ID. > - * @secdata contains the security context. > - * > - * @release_secctx: > - * Release the security context. > - * @secdata contains the security context. > - * @seclen contains the length of the security context. > - * > - * Security hooks for Audit > - * > - * @audit_rule_init: > - * Allocate and initialize an LSM audit rule structure. > - * @field contains the required Audit action. Fields flags are defined in > include/linux/audit.h - * @op contains the operator the rule uses. > - * @rulestr contains the context where the rule will be applied to. > - * @lsmrule contains a pointer to receive the result. > - * Return 0 if @lsmrule has been successfully set, > - * -EINVAL in case of an invalid rule. > - * > - * @audit_rule_known: > - * Specifies whether given @rule contains any fields related to current > LSM. - * @rule contains the audit rule of interest. > - * Return 1 in case of relation found, 0 otherwise. > - * > - * @audit_rule_match: > - * Determine if given @secid matches a rule previously approved > - * by @audit_rule_known. > - * @secid contains the security id in question. > - * @field contains the field which relates to current LSM. > - * @op contains the operator that will be used for matching. > - * @rule points to the audit rule that will be checked against. > - * @actx points to the audit context associated with the check. > - * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure. > - * > - * @audit_rule_free: > - * Deallocate the LSM audit rule structure previously allocated by > - * audit_rule_init. > - * @rule contains the allocated rule > - * > - * @inode_notifysecctx: > - * Notify the security module of what the security context of an inode > - * should be. Initializes the incore security context managed by the > - * security module for this inode. Example usage: NFS client invokes > - * this hook to initialize the security context in its incore inode to the > - * value provided by the server for the file when the server returned the > - * file's attributes to the client. > - * > - * Must be called with inode->i_mutex locked. > - * > - * @inode we wish to set the security context of. > - * @ctx contains the string which we wish to set in the inode. > - * @ctxlen contains the length of @ctx. > - * > - * @inode_setsecctx: > - * Change the security context of an inode. Updates the > - * incore security context managed by the security module and invokes the > - * fs code as needed (via __vfs_setxattr_noperm) to update any backing > - * xattrs that represent the context. Example usage: NFS server invokes > - * this hook to change the security context in its incore inode and on the > - * backing filesystem to a value provided by the client on a SETATTR - * > operation. > - * > - * Must be called with inode->i_mutex locked. > - * > - * @dentry contains the inode we wish to set the security context of. > - * @ctx contains the string which we wish to set in the inode. > - * @ctxlen contains the length of @ctx. > - * > - * @inode_getsecctx: > - * On success, returns 0 and fills out @ctx and @ctxlen with the security > - * context for the given @inode. > - * > - * @inode we wish to get the security context of. > - * @ctx is a pointer in which to place the allocated security context. > - * @ctxlen points to the place to put the length of @ctx. > - * This is the main security structure. > - */ > - > /* prototypes */ > extern int security_init(void); > > > -- > To unsubscribe from this list: send the line "unsubscribe > linux-security-module" in the body of a message to > majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- paul moore security @ redhat -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/