--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/include/linux/security.h Sun Jan 11 20:20:11 2009 +0100
@@ -0,0 +1,2826 @@
+/*
+ * Linux Security plug
+ *
+ * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
+ * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
+ * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
+ * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Due to this file being licensed under the GPL there is controversy over
+ * whether this permits you to write a module that #includes this file
+ * without placing your module under the GPL. Please consult a lawyer for
+ * advice before doing this.
+ *
+ */
+
+#ifndef __LINUX_SECURITY_H
+#define __LINUX_SECURITY_H
+
+#include <linux/fs.h>
+#include <linux/binfmts.h>
+#include <linux/signal.h>
+#include <linux/resource.h>
+#include <linux/sem.h>
+#include <linux/shm.h>
+#include <linux/msg.h>
+#include <linux/sched.h>
+#include <linux/key.h>
+#include <linux/xfrm.h>
+#include <net/flow.h>
+
+/* Maximum number of letters for an LSM name string */
+#define SECURITY_NAME_MAX 10
+
+struct ctl_table;
+struct audit_krule;
+
+/*
+ * These functions are in security/capability.c and are used
+ * as the default capabilities functions
+ */
+extern int cap_capable(struct task_struct *tsk, int cap);
+extern int cap_settime(struct timespec *ts, struct timezone *tz);
+extern int cap_ptrace_may_access(struct task_struct *child, unsigned int mode);
+extern int cap_ptrace_traceme(struct task_struct *parent);
+extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
+extern int cap_capset_check(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
+extern void cap_capset_set(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
+extern int cap_bprm_set_security(struct linux_binprm *bprm);
+extern void cap_bprm_apply_creds(struct linux_binprm *bprm, int unsafe);
+extern int cap_bprm_secureexec(struct linux_binprm *bprm);
+extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags);
+extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
+extern int cap_inode_need_killpriv(struct dentry *dentry);
+extern int cap_inode_killpriv(struct dentry *dentry);
+extern int cap_task_post_setuid(uid_t old_ruid, uid_t old_euid, uid_t old_suid, int flags);
+extern void cap_task_reparent_to_init(struct task_struct *p);
+extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
+ unsigned long arg4, unsigned long arg5, long *rc_p);
+extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
+extern int cap_task_setioprio(struct task_struct *p, int ioprio);
+extern int cap_task_setnice(struct task_struct *p, int nice);
+extern int cap_syslog(int type);
+extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
+
+struct msghdr;
+struct sk_buff;
+struct sock;
+struct sockaddr;
+struct socket;
+struct flowi;
+struct dst_entry;
+struct xfrm_selector;
+struct xfrm_policy;
+struct xfrm_state;
+struct xfrm_user_sec_ctx;
+struct seq_file;
+
+extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
+extern int cap_netlink_recv(struct sk_buff *skb, int cap);
+
+extern unsigned long mmap_min_addr;
+/*
+ * Values used in the task_security_ops calls
+ */
+/* setuid or setgid, id0 == uid or gid */
+#define LSM_SETID_ID 1
+
+/* setreuid or setregid, id0 == real, id1 == eff */
+#define LSM_SETID_RE 2
+
+/* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
+#define LSM_SETID_RES 4
+
+/* setfsuid or setfsgid, id0 == fsuid or fsgid */
+#define LSM_SETID_FS 8
+
+/* forward declares to avoid warnings */
+struct sched_param;
+struct request_sock;
+
+/* bprm_apply_creds unsafe reasons */
+#define LSM_UNSAFE_SHARE 1
+#define LSM_UNSAFE_PTRACE 2
+#define LSM_UNSAFE_PTRACE_CAP 4
+
+#ifdef CONFIG_SECURITY
+
+struct security_mnt_opts {
+ char **mnt_opts;
+ int *mnt_opts_flags;
+ int num_mnt_opts;
+};
+
+static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
+{
+ opts->mnt_opts = NULL;
+ opts->mnt_opts_flags = NULL;
+ opts->num_mnt_opts = 0;
+}
+
+static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
+{
+ int i;
+ if (opts->mnt_opts)
+ for (i = 0; i < opts->num_mnt_opts; i++)
+ kfree(opts->mnt_opts[i]);
+ kfree(opts->mnt_opts);
+ opts->mnt_opts = NULL;
+ kfree(opts->mnt_opts_flags);
+ opts->mnt_opts_flags = NULL;
+ opts->num_mnt_opts = 0;
+}
+
+/**
+ * struct security_operations - main security structure
+ *
+ * Security module identifier.
+ *
+ * @name:
+ * A string that acts as a unique identifeir for the LSM with max number
+ * of characters = SECURITY_NAME_MAX.
+ *
+ * Security hooks for program execution operations.
+ *
+ * @bprm_alloc_security:
+ * Allocate and attach a security structure to the @bprm->security field.
+ * The security field is initialized to NULL when the bprm structure is
+ * allocated.
+ * @bprm contains the linux_binprm structure to be modified.
+ * Return 0 if operation was successful.
+ * @bprm_free_security:
+ * @bprm contains the linux_binprm structure to be modified.
+ * Deallocate and clear the @bprm->security field.
+ * @bprm_apply_creds:
+ * Compute and set the security attributes of a process being transformed
+ * by an execve operation based on the old attributes (current->security)
+ * and the information saved in @bprm->security by the set_security hook.
+ * Since this hook function (and its caller) are void, this hook can not
+ * return an error. However, it can leave the security attributes of the
+ * process unchanged if an access failure occurs at this point.
+ * bprm_apply_creds is called under task_lock. @unsafe indicates various
+ * reasons why it may be unsafe to change security state.
+ * @bprm contains the linux_binprm structure.
+ * @bprm_post_apply_creds:
+ * Runs after bprm_apply_creds with the task_lock dropped, so that
+ * functions which cannot be called safely under the task_lock can
+ * be used. This hook is a good place to perform state changes on
+ * the process such as closing open file descriptors to which access
+ * is no longer granted if the attributes were changed.
+ * Note that a security module might need to save state between
+ * bprm_apply_creds and bprm_post_apply_creds to store the decision
+ * on whether the process may proceed.
+ * @bprm contains the linux_binprm structure.
+ * @bprm_set_security:
+ * 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_security call. The primary difference from
+ * set_security 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_security is called
+ * first.
+ * @bprm contains the linux_binprm structure.
+ * Return 0 if the hook is successful and permission is granted.
+ * @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_check_sb:
+ * Check permission before the device with superblock @mnt->sb is mounted
+ * on the mount point named by @nd.
+ * @mnt contains the vfsmount for device being mounted.
+ * @path contains the path for the mount point.
+ * 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_umount_close:
+ * Close any files in the @mnt mounted filesystem that are held open by
+ * the security module. This hook is called during an umount operation
+ * prior to checking whether the filesystem is still busy.
+ * @mnt contains the mounted filesystem.
+ * @sb_umount_busy:
+ * Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
+ * any files that were closed by umount_close. This hook is called during
+ * an umount operation if the umount fails after a call to the
+ * umount_close hook.
+ * @mnt contains the mounted filesystem.
+ * @sb_post_remount:
+ * Update the security module's state when a filesystem is remounted.
+ * This hook is only called if the remount was successful.
+ * @mnt contains the mounted file system.
+ * @flags contains the new filesystem flags.
+ * @data contains the filesystem-specific data.
+ * @sb_post_addmount:
+ * Update the security module's state when a filesystem is mounted.
+ * This hook is called any time a mount is successfully grafetd to
+ * the tree.
+ * @mnt contains the mounted filesystem.
+ * @mountpoint contains the path for the mount point.
+ * @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_post_pivotroot:
+ * Update module state after a successful pivot.
+ * @old_path contains the path for the old root.
+ * @new_path contains the path for the new root.
+ * @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
+ *
+ * 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.
+ * @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.
+ * @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.
+ * @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.
+ * @inode_mkdir:
+ * Check permissions to create a new directory in the existing directory
+ * associated with inode strcture @dir.
+ * @dir containst 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.
+ * @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.
+ * @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.
+ * @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.
+ * @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.
+ * @nd contains the nameidata (may be NULL).
+ * 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.
+ * @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_delete:
+ * @inode contains the inode structure for deleted inode.
+ * This hook is called when a deleted inode is released (i.e. an inode
+ * with no hard links has its use count drop to zero). A security module
+ * can use this hook to release any persistent label associated with the
+ * inode.
+ * @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 can
+ * 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.
+ * @file_mmap :
+ * 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 can 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.
+ *
+ * Security hook for dentry
+ *
+ * @dentry_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_alloc_security:
+ * @p contains the task_struct for child process.
+ * Allocate and attach a security structure to the p->security field. The
+ * security field is initialized to NULL when the task structure is
+ * allocated.
+ * Return 0 if operation was successful.
+ * @task_free_security:
+ * @p contains the task_struct for process.
+ * Deallocate and clear the p->security field.
+ * @task_setuid:
+ * Check permission before 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 and how to
+ * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
+ * definitions at the beginning of this file for the @flags values and
+ * their meanings.
+ * @id0 contains a uid.
+ * @id1 contains a uid.
+ * @id2 contains a uid.
+ * @flags contains one of the LSM_SETID_* values.
+ * Return 0 if permission is granted.
+ * @task_post_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
+ * @flags is LSM_SETID_FS, then @old_ruid is the old fs uid and the other
+ * parameters are not used.
+ * @old_ruid contains the old real uid (or fs uid if LSM_SETID_FS).
+ * @old_euid contains the old effective uid (or -1 if LSM_SETID_FS).
+ * @old_suid contains the old saved uid (or -1 if LSM_SETID_FS).
+ * @flags contains one of the LSM_SETID_* values.
+ * Return 0 on success.
+ * @task_setgid:
+ * Check permission before setting one or more of the group identity
+ * attributes of the current process. The @flags parameter indicates
+ * which of the set*gid system calls invoked this hook and how to
+ * interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
+ * definitions at the beginning of this file for the @flags values and
+ * their meanings.
+ * @id0 contains a gid.
+ * @id1 contains a gid.
+ * @id2 contains a gid.
+ * @flags contains one of the LSM_SETID_* values.
+ * Return 0 if permission is granted.
+ * @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_setgroups:
+ * Check permission before setting the supplementary group set of the
+ * current process.
+ * @group_info contains the new group information.
+ * Return 0 if permission is granted.
+ * @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.
+ * @rc_p contains a pointer to communicate back the forced return code
+ * Return 0 if permission is granted, and non-zero if the security module
+ * has taken responsibility (setting *rc_p) for the prctl call.
+ * @task_reparent_to_init:
+ * Set the security attributes in @p->security for a kernel thread that
+ * is being reparented to the init task.
+ * @p contains the task_struct for the kernel thread.
+ * @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.
+ * @netlink_recv:
+ * Check permission before processing the received netlink message in
+ * @skb.
+ * @skb contains the sk_buff structure for the netlink message.
+ * @cap indicates the capability required
+ * Return 0 if permission is granted.
+ *
+ * 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 socket structure.
+ * @other contains the peer socket 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.
+ * @sock 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_post_accept:
+ * This hook allows a security module to copy security
+ * information into the newly created socket's inode.
+ * @sock contains the listening socket structure.
+ * @newsock contains the newly created server socket for connection.
+ * @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.
+ * @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.
+ * @req_classify_flow:
+ * Sets the flow's sid to the openreq sid.
+ *
+ * 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)
+ * @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_security:
+ * @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).
+ * @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 either sec_ctx or polsec, with the mls portion
+ * taken from secid in the latter case.
+ * 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).
+ * @context points to the process 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 1 if permission granted, 0 if permission denied and -ve it the
+ * normal permissions model should be effected.
+ * @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.
+ *
+ * @ptrace_may_access:
+ * 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
+ * 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.
+ * The parent process will still have to undergo the ptrace_may_access
+ * checks before it is allowed to trace this one.
+ * @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_check:
+ * Check permission before setting the @effective, @inheritable, and
+ * @permitted capability sets for the @target process.
+ * Caveat: @target is also set to current if a set of processes is
+ * specified (i.e. all processes other than current and init or a
+ * particular process group). Hence, the capset_set hook may need to
+ * revalidate permission to the actual 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 permission is granted.
+ * @capset_set:
+ * Set the @effective, @inheritable, and @permitted capability sets for
+ * the @target process. Since capset_check cannot always check permission
+ * to the real @target process, this hook may also perform permission
+ * checking to determine if the current process is allowed to set the
+ * capability sets of the @target process. However, this hook has no way
+ * of returning an error due to the structure of the sys_capset code.
+ * @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.
+ * @capable:
+ * Check whether the @tsk process has the @cap capability.
+ * @tsk contains the task_struct for the process.
+ * @cap contains the capability <include/linux/capability.h>.
+ * Return 0 if the capability is granted for @tsk.
+ * @acct:
+ * Check permission before enabling or disabling process accounting. If
+ * accounting is being enabled, then @file refers to the open file used to
+ * store accounting records. If accounting is being disabled, then @file
+ * is NULL.
+ * @file contains the file structure for the accounting file (may be NULL).
+ * Return 0 if permission is granted.
+ * @sysctl:
+ * Check permission before accessing the @table sysctl variable in the
+ * manner specified by @op.
+ * @table contains the ctl_table structure for the sysctl variable.
+ * @op contains the operation (001 = search, 002 = write, 004 = read).
+ * Return 0 if permission is granted.
+ * @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.
+ * 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.
+ *
+ * @secid_to_secctx:
+ * Convert secid to security context.
+ * @secid contains the security ID.
+ * @secdata contains the pointer that stores the converted security context.
+ * @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
+ *
+ * This is the main security structure.
+ */
+struct security_operations {
+ char name[SECURITY_NAME_MAX + 1];
+
+ int (*ptrace_may_access) (struct task_struct *child, unsigned int mode);
+ int (*ptrace_traceme) (struct task_struct *parent);
+ int (*capget) (struct task_struct *target,
+ kernel_cap_t *effective,
+ kernel_cap_t *inheritable, kernel_cap_t *permitted);
+ int (*capset_check) (struct task_struct *target,
+ kernel_cap_t *effective,
+ kernel_cap_t *inheritable,
+ kernel_cap_t *permitted);
+ void (*capset_set) (struct task_struct *target,
+ kernel_cap_t *effective,
+ kernel_cap_t *inheritable,
+ kernel_cap_t *permitted);
+ int (*capable) (struct task_struct *tsk, int cap);
+ int (*acct) (struct file *file);
+ int (*sysctl) (struct ctl_table *table, int op);
+ int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
+ int (*quota_on) (struct dentry *dentry);
+ int (*syslog) (int type);
+ int (*settime) (struct timespec *ts, struct timezone *tz);
+ int (*vm_enough_memory) (struct mm_struct *mm, long pages);
+
+ int (*bprm_alloc_security) (struct linux_binprm *bprm);
+ void (*bprm_free_security) (struct linux_binprm *bprm);
+ void (*bprm_apply_creds) (struct linux_binprm *bprm, int unsafe);
+ void (*bprm_post_apply_creds) (struct linux_binprm *bprm);
+ int (*bprm_set_security) (struct linux_binprm *bprm);
+ int (*bprm_check_security) (struct linux_binprm *bprm);
+ int (*bprm_secureexec) (struct linux_binprm *bprm);
+
+ int (*sb_alloc_security) (struct super_block *sb);
+ void (*sb_free_security) (struct super_block *sb);
+ int (*sb_copy_data) (char *orig, char *copy);
+ int (*sb_kern_mount) (struct super_block *sb, void *data);
+ int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
+ int (*sb_statfs) (struct dentry *dentry);
+ int (*sb_mount) (char *dev_name, struct path *path,
+ char *type, unsigned long flags, void *data);
+ int (*sb_check_sb) (struct vfsmount *mnt, struct path *path);
+ int (*sb_umount) (struct vfsmount *mnt, int flags);
+ void (*sb_umount_close) (struct vfsmount *mnt);
+ void (*sb_umount_busy) (struct vfsmount *mnt);
+ void (*sb_post_remount) (struct vfsmount *mnt,
+ unsigned long flags, void *data);
+ void (*sb_post_addmount) (struct vfsmount *mnt,
+ struct path *mountpoint);
+ int (*sb_pivotroot) (struct path *old_path,
+ struct path *new_path);
+ void (*sb_post_pivotroot) (struct path *old_path,
+ struct path *new_path);
+ int (*sb_set_mnt_opts) (struct super_block *sb,
+ struct security_mnt_opts *opts);
+ void (*sb_clone_mnt_opts) (const struct super_block *oldsb,
+ struct super_block *newsb);
+ int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
+
+ int (*inode_alloc_security) (struct inode *inode);
+ void (*inode_free_security) (struct inode *inode);
+ int (*inode_init_security) (struct inode *inode, struct inode *dir,
+ char **name, void **value, size_t *len);
+ int (*inode_create) (struct inode *dir,
+ struct dentry *dentry, int mode);
+ int (*inode_link) (struct dentry *old_dentry,
+ struct inode *dir, struct dentry *new_dentry);
+ int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
+ int (*inode_symlink) (struct inode *dir,
+ struct dentry *dentry, const char *old_name);
+ int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
+ int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
+ int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
+ int mode, dev_t dev);
+ int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry);
+ int (*inode_readlink) (struct dentry *dentry);
+ int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
+ int (*inode_permission) (struct inode *inode, int mask);
+ int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
+ int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
+ void (*inode_delete) (struct inode *inode);
+ int (*inode_setxattr) (struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags);
+ void (*inode_post_setxattr) (struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags);
+ int (*inode_getxattr) (struct dentry *dentry, const char *name);
+ int (*inode_listxattr) (struct dentry *dentry);
+ int (*inode_removexattr) (struct dentry *dentry, const char *name);
+ int (*inode_need_killpriv) (struct dentry *dentry);
+ int (*inode_killpriv) (struct dentry *dentry);
+ int (*inode_getsecurity) (const struct inode *inode, const char *name, void **buffer, bool alloc);
+ int (*inode_setsecurity) (struct inode *inode, const char *name, const void *value, size_t size, int flags);
+ int (*inode_listsecurity) (struct inode *inode, char *buffer, size_t buffer_size);
+ void (*inode_getsecid) (const struct inode *inode, u32 *secid);
+
+ int (*file_permission) (struct file *file, int mask);
+ int (*file_alloc_security) (struct file *file);
+ void (*file_free_security) (struct file *file);
+ int (*file_ioctl) (struct file *file, unsigned int cmd,
+ unsigned long arg);
+ int (*file_mmap) (struct file *file,
+ unsigned long reqprot, unsigned long prot,
+ unsigned long flags, unsigned long addr,
+ unsigned long addr_only);
+ int (*file_mprotect) (struct vm_area_struct *vma,
+ unsigned long reqprot,
+ unsigned long prot);
+ int (*file_lock) (struct file *file, unsigned int cmd);
+ int (*file_fcntl) (struct file *file, unsigned int cmd,
+ unsigned long arg);
+ int (*file_set_fowner) (struct file *file);
+ int (*file_send_sigiotask) (struct task_struct *tsk,
+ struct fown_struct *fown, int sig);
+ int (*file_receive) (struct file *file);
+ int (*dentry_open) (struct file *file);
+
+ int (*task_create) (unsigned long clone_flags);
+ int (*task_alloc_security) (struct task_struct *p);
+ void (*task_free_security) (struct task_struct *p);
+ int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
+ int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ ,
+ uid_t old_euid, uid_t old_suid, int flags);
+ int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
+ int (*task_setpgid) (struct task_struct *p, pid_t pgid);
+ int (*task_getpgid) (struct task_struct *p);
+ int (*task_getsid) (struct task_struct *p);
+ void (*task_getsecid) (struct task_struct *p, u32 *secid);
+ int (*task_setgroups) (struct group_info *group_info);
+ int (*task_setnice) (struct task_struct *p, int nice);
+ int (*task_setioprio) (struct task_struct *p, int ioprio);
+ int (*task_getioprio) (struct task_struct *p);
+ int (*task_setrlimit) (unsigned int resource, struct rlimit *new_rlim);
+ int (*task_setscheduler) (struct task_struct *p, int policy,
+ struct sched_param *lp);
+ int (*task_getscheduler) (struct task_struct *p);
+ int (*task_movememory) (struct task_struct *p);
+ int (*task_kill) (struct task_struct *p,
+ struct siginfo *info, int sig, u32 secid);
+ int (*task_wait) (struct task_struct *p);
+ int (*task_prctl) (int option, unsigned long arg2,
+ unsigned long arg3, unsigned long arg4,
+ unsigned long arg5, long *rc_p);
+ void (*task_reparent_to_init) (struct task_struct *p);
+ void (*task_to_inode) (struct task_struct *p, struct inode *inode);
+
+ int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
+ void (*ipc_getsecid) (struct kern_ipc_perm *ipcp, u32 *secid);
+
+ int (*msg_msg_alloc_security) (struct msg_msg *msg);
+ void (*msg_msg_free_security) (struct msg_msg *msg);
+
+ int (*msg_queue_alloc_security) (struct msg_queue *msq);
+ void (*msg_queue_free_security) (struct msg_queue *msq);
+ int (*msg_queue_associate) (struct msg_queue *msq, int msqflg);
+ int (*msg_queue_msgctl) (struct msg_queue *msq, int cmd);
+ int (*msg_queue_msgsnd) (struct msg_queue *msq,
+ struct msg_msg *msg, int msqflg);
+ int (*msg_queue_msgrcv) (struct msg_queue *msq,
+ struct msg_msg *msg,
+ struct task_struct *target,
+ long type, int mode);
+
+ int (*shm_alloc_security) (struct shmid_kernel *shp);
+ void (*shm_free_security) (struct shmid_kernel *shp);
+ int (*shm_associate) (struct shmid_kernel *shp, int shmflg);
+ int (*shm_shmctl) (struct shmid_kernel *shp, int cmd);
+ int (*shm_shmat) (struct shmid_kernel *shp,
+ char __user *shmaddr, int shmflg);
+
+ int (*sem_alloc_security) (struct sem_array *sma);
+ void (*sem_free_security) (struct sem_array *sma);
+ int (*sem_associate) (struct sem_array *sma, int semflg);
+ int (*sem_semctl) (struct sem_array *sma, int cmd);
+ int (*sem_semop) (struct sem_array *sma,
+ struct sembuf *sops, unsigned nsops, int alter);
+
+ int (*netlink_send) (struct sock *sk, struct sk_buff *skb);
+ int (*netlink_recv) (struct sk_buff *skb, int cap);
+
+ void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
+
+ int (*getprocattr) (struct task_struct *p, char *name, char **value);
+ int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
+ int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
+ int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
+ void (*release_secctx) (char *secdata, u32 seclen);
+
+#ifdef CONFIG_SECURITY_NETWORK
+ int (*unix_stream_connect) (struct socket *sock,
+ struct socket *other, struct sock *newsk);
+ int (*unix_may_send) (struct socket *sock, struct socket *other);
+
+ int (*socket_create) (int family, int type, int protocol, int kern);
+ int (*socket_post_create) (struct socket *sock, int family,
+ int type, int protocol, int kern);
+ int (*socket_bind) (struct socket *sock,
+ struct sockaddr *address, int addrlen);
+ int (*socket_connect) (struct socket *sock,
+ struct sockaddr *address, int addrlen);
+ int (*socket_listen) (struct socket *sock, int backlog);
+ int (*socket_accept) (struct socket *sock, struct socket *newsock);
+ void (*socket_post_accept) (struct socket *sock,
+ struct socket *newsock);
+ int (*socket_sendmsg) (struct socket *sock,
+ struct msghdr *msg, int size);
+ int (*socket_recvmsg) (struct socket *sock,
+ struct msghdr *msg, int size, int flags);
+ int (*socket_getsockname) (struct socket *sock);
+ int (*socket_getpeername) (struct socket *sock);
+ int (*socket_getsockopt) (struct socket *sock, int level, int optname);
+ int (*socket_setsockopt) (struct socket *sock, int level, int optname);
+ int (*socket_shutdown) (struct socket *sock, int how);
+ int (*socket_sock_rcv_skb) (struct sock *sk, struct sk_buff *skb);
+ int (*socket_getpeersec_stream) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
+ int (*socket_getpeersec_dgram) (struct socket *sock, struct sk_buff *skb, u32 *secid);
+ int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
+ void (*sk_free_security) (struct sock *sk);
+ void (*sk_clone_security) (const struct sock *sk, struct sock *newsk);
+ void (*sk_getsecid) (struct sock *sk, u32 *secid);
+ void (*sock_graft) (struct sock *sk, struct socket *parent);
+ int (*inet_conn_request) (struct sock *sk, struct sk_buff *skb,
+ struct request_sock *req);
+ void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
+ void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
+ void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
+#endif /* CONFIG_SECURITY_NETWORK */
+
+#ifdef CONFIG_SECURITY_NETWORK_XFRM
+ int (*xfrm_policy_alloc_security) (struct xfrm_sec_ctx **ctxp,
+ struct xfrm_user_sec_ctx *sec_ctx);
+ int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
+ void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
+ int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
+ int (*xfrm_state_alloc_security) (struct xfrm_state *x,
+ struct xfrm_user_sec_ctx *sec_ctx,
+ u32 secid);
+ void (*xfrm_state_free_security) (struct xfrm_state *x);
+ int (*xfrm_state_delete_security) (struct xfrm_state *x);
+ int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
+ int (*xfrm_state_pol_flow_match) (struct xfrm_state *x,
+ struct xfrm_policy *xp,
+ struct flowi *fl);
+ int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall);
+#endif /* CONFIG_SECURITY_NETWORK_XFRM */
+
+ /* key management security hooks */
+#ifdef CONFIG_KEYS
+ int (*key_alloc) (struct key *key, struct task_struct *tsk, unsigned long flags);
+ void (*key_free) (struct key *key);
+ int (*key_permission) (key_ref_t key_ref,
+ struct task_struct *context,
+ key_perm_t perm);
+ int (*key_getsecurity)(struct key *key, char **_buffer);
+#endif /* CONFIG_KEYS */
+
+#ifdef CONFIG_AUDIT
+ int (*audit_rule_init) (u32 field, u32 op, char *rulestr, void **lsmrule);
+ int (*audit_rule_known) (struct audit_krule *krule);
+ int (*audit_rule_match) (u32 secid, u32 field, u32 op, void *lsmrule,
+ struct audit_context *actx);
+ void (*audit_rule_free) (void *lsmrule);
+#endif /* CONFIG_AUDIT */
+};
+
+/* prototypes */
+extern int security_init(void);
+extern int security_module_enable(struct security_operations *ops);
+extern int register_security(struct security_operations *ops);
+
+/* Security operations */
+int security_ptrace_may_access(struct task_struct *child, unsigned int mode);
+int security_ptrace_traceme(struct task_struct *parent);
+int security_capget(struct task_struct *target,
+ kernel_cap_t *effective,
+ kernel_cap_t *inheritable,
+ kernel_cap_t *permitted);
+int security_capset_check(struct task_struct *target,
+ kernel_cap_t *effective,
+ kernel_cap_t *inheritable,
+ kernel_cap_t *permitted);
+void security_capset_set(struct task_struct *target,
+ kernel_cap_t *effective,
+ kernel_cap_t *inheritable,
+ kernel_cap_t *permitted);
+int security_capable(struct task_struct *tsk, int cap);
+int security_acct(struct file *file);
+int security_sysctl(struct ctl_table *table, int op);
+int security_quotactl(int cmds, int type, int id, struct super_block *sb);
+int security_quota_on(struct dentry *dentry);
+int security_syslog(int type);
+int security_settime(struct timespec *ts, struct timezone *tz);
+int security_vm_enough_memory(long pages);
+int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
+int security_vm_enough_memory_kern(long pages);
+int security_bprm_alloc(struct linux_binprm *bprm);
+void security_bprm_free(struct linux_binprm *bprm);
+void security_bprm_apply_creds(struct linux_binprm *bprm, int unsafe);
+void security_bprm_post_apply_creds(struct linux_binprm *bprm);
+int security_bprm_set(struct linux_binprm *bprm);
+int security_bprm_check(struct linux_binprm *bprm);
+int security_bprm_secureexec(struct linux_binprm *bprm);
+int security_sb_alloc(struct super_block *sb);
+void security_sb_free(struct super_block *sb);
+int security_sb_copy_data(char *orig, char *copy);
+int security_sb_kern_mount(struct super_block *sb, void *data);
+int security_sb_show_options(struct seq_file *m, struct super_block *sb);
+int security_sb_statfs(struct dentry *dentry);
+int security_sb_mount(char *dev_name, struct path *path,
+ char *type, unsigned long flags, void *data);
+int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
+int security_sb_umount(struct vfsmount *mnt, int flags);
+void security_sb_umount_close(struct vfsmount *mnt);
+void security_sb_umount_busy(struct vfsmount *mnt);
+void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
+void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
+int security_sb_pivotroot(struct path *old_path, struct path *new_path);
+void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
+int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
+void security_sb_clone_mnt_opts(const struct super_block *oldsb,
+ struct super_block *newsb);
+int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
+
+int security_inode_alloc(struct inode *inode);
+void security_inode_free(struct inode *inode);
+int security_inode_init_security(struct inode *inode, struct inode *dir,
+ char **name, void **value, size_t *len);
+int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
+int security_inode_link(struct dentry *old_dentry, struct inode *dir,
+ struct dentry *new_dentry);
+int security_inode_unlink(struct inode *dir, struct dentry *dentry);
+int security_inode_symlink(struct inode *dir, struct dentry *dentry,
+ const char *old_name);
+int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode);
+int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
+int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
+int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry);
+int security_inode_readlink(struct dentry *dentry);
+int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
+int security_inode_permission(struct inode *inode, int mask);
+int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
+int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
+void security_inode_delete(struct inode *inode);
+int security_inode_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags);
+void security_inode_post_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags);
+int security_inode_getxattr(struct dentry *dentry, const char *name);
+int security_inode_listxattr(struct dentry *dentry);
+int security_inode_removexattr(struct dentry *dentry, const char *name);
+int security_inode_need_killpriv(struct dentry *dentry);
+int security_inode_killpriv(struct dentry *dentry);
+int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
+int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
+int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
+void security_inode_getsecid(const struct inode *inode, u32 *secid);
+int security_file_permission(struct file *file, int mask);
+int security_file_alloc(struct file *file);
+void security_file_free(struct file *file);
+int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+int security_file_mmap(struct file *file, unsigned long reqprot,
+ unsigned long prot, unsigned long flags,
+ unsigned long addr, unsigned long addr_only);
+int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
+ unsigned long prot);
+int security_file_lock(struct file *file, unsigned int cmd);
+int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
+int security_file_set_fowner(struct file *file);
+int security_file_send_sigiotask(struct task_struct *tsk,
+ struct fown_struct *fown, int sig);
+int security_file_receive(struct file *file);
+int security_dentry_open(struct file *file);
+int security_task_create(unsigned long clone_flags);
+int security_task_alloc(struct task_struct *p);
+void security_task_free(struct task_struct *p);
+int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
+int security_task_post_setuid(uid_t old_ruid, uid_t old_euid,
+ uid_t old_suid, int flags);
+int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
+int security_task_setpgid(struct task_struct *p, pid_t pgid);
+int security_task_getpgid(struct task_struct *p);
+int security_task_getsid(struct task_struct *p);
+void security_task_getsecid(struct task_struct *p, u32 *secid);
+int security_task_setgroups(struct group_info *group_info);
+int security_task_setnice(struct task_struct *p, int nice);
+int security_task_setioprio(struct task_struct *p, int ioprio);
+int security_task_getioprio(struct task_struct *p);
+int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim);
+int security_task_setscheduler(struct task_struct *p,
+ int policy, struct sched_param *lp);
+int security_task_getscheduler(struct task_struct *p);
+int security_task_movememory(struct task_struct *p);
+int security_task_kill(struct task_struct *p, struct siginfo *info,
+ int sig, u32 secid);
+int security_task_wait(struct task_struct *p);
+int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
+ unsigned long arg4, unsigned long arg5, long *rc_p);
+void security_task_reparent_to_init(struct task_struct *p);
+void security_task_to_inode(struct task_struct *p, struct inode *inode);
+int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
+void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
+int security_msg_msg_alloc(struct msg_msg *msg);
+void security_msg_msg_free(struct msg_msg *msg);
+int security_msg_queue_alloc(struct msg_queue *msq);
+void security_msg_queue_free(struct msg_queue *msq);
+int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
+int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
+int security_msg_queue_msgsnd(struct msg_queue *msq,
+ struct msg_msg *msg, int msqflg);
+int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
+ struct task_struct *target, long type, int mode);
+int security_shm_alloc(struct shmid_kernel *shp);
+void security_shm_free(struct shmid_kernel *shp);
+int security_shm_associate(struct shmid_kernel *shp, int shmflg);
+int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
+int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
+int security_sem_alloc(struct sem_array *sma);
+void security_sem_free(struct sem_array *sma);
+int security_sem_associate(struct sem_array *sma, int semflg);
+int security_sem_semctl(struct sem_array *sma, int cmd);
+int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
+ unsigned nsops, int alter);
+void security_d_instantiate(struct dentry *dentry, struct inode *inode);
+int security_getprocattr(struct task_struct *p, char *name, char **value);
+int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
+int security_netlink_send(struct sock *sk, struct sk_buff *skb);
+int security_netlink_recv(struct sk_buff *skb, int cap);
+int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
+int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
+void security_release_secctx(char *secdata, u32 seclen);
+
+#else /* CONFIG_SECURITY */
+struct security_mnt_opts {
+};
+
+static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
+{
+}
+
+static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
+{
+}
+
+/*
+ * This is the default capabilities functionality. Most of these functions
+ * are just stubbed out, but a few must call the proper capable code.
+ */
+
+static inline int security_init(void)
+{
+ return 0;
+}
+
+static inline int security_ptrace_may_access(struct task_struct *child,
+ unsigned int mode)
+{
+ return cap_ptrace_may_access(child, mode);
+}
+
+static inline int security_ptrace_traceme(struct task_struct *parent)
+{
+ return cap_ptrace_traceme(parent);
+}
+
+static inline int security_capget(struct task_struct *target,
+ kernel_cap_t *effective,
+ kernel_cap_t *inheritable,
+ kernel_cap_t *permitted)
+{
+ return cap_capget(target, effective, inheritable, permitted);
+}
+
+static inline int security_capset_check(struct task_struct *target,
+ kernel_cap_t *effective,
+ kernel_cap_t *inheritable,
+ kernel_cap_t *permitted)
+{
+ return cap_capset_check(target, effective, inheritable, permitted);
+}
+
+static inline void security_capset_set(struct task_struct *target,
+ kernel_cap_t *effective,
+ kernel_cap_t *inheritable,
+ kernel_cap_t *permitted)
+{
+ cap_capset_set(target, effective, inheritable, permitted);
+}
+
+static inline int security_capable(struct task_struct *tsk, int cap)
+{
+ return cap_capable(tsk, cap);
+}
+
+static inline int security_acct(struct file *file)
+{
+ return 0;
+}
+
+static inline int security_sysctl(struct ctl_table *table, int op)
+{
+ return 0;
+}
+
+static inline int security_quotactl(int cmds, int type, int id,
+ struct super_block *sb)
+{
+ return 0;
+}
+
+static inline int security_quota_on(struct dentry *dentry)
+{
+ return 0;
+}
+
+static inline int security_syslog(int type)
+{
+ return cap_syslog(type);
+}
+
+static inline int security_settime(struct timespec *ts, struct timezone *tz)
+{
+ return cap_settime(ts, tz);
+}
+
+static inline int security_vm_enough_memory(long pages)
+{
+ WARN_ON(current->mm == NULL);
+ return cap_vm_enough_memory(current->mm, pages);
+}
+
+static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
+{
+ WARN_ON(mm == NULL);
+ return cap_vm_enough_memory(mm, pages);
+}
+
+static inline int security_vm_enough_memory_kern(long pages)
+{
+ /* If current->mm is a kernel thread then we will pass NULL,
+ for this specific case that is fine */
+ return cap_vm_enough_memory(current->mm, pages);
+}
+
+static inline int security_bprm_alloc(struct linux_binprm *bprm)
+{
+ return 0;
+}
+
+static inline void security_bprm_free(struct linux_binprm *bprm)
+{ }
+
+static inline void security_bprm_apply_creds(struct linux_binprm *bprm, int unsafe)
+{
+ cap_bprm_apply_creds(bprm, unsafe);
+}
+
+static inline void security_bprm_post_apply_creds(struct linux_binprm *bprm)
+{
+ return;
+}
+
+static inline int security_bprm_set(struct linux_binprm *bprm)
+{
+ return cap_bprm_set_security(bprm);
+}
+
+static inline int security_bprm_check(struct linux_binprm *bprm)
+{
+ return 0;
+}
+
+static inline int security_bprm_secureexec(struct linux_binprm *bprm)
+{
+ return cap_bprm_secureexec(bprm);
+}
+
+static inline int security_sb_alloc(struct super_block *sb)
+{
+ return 0;
+}
+
+static inline void security_sb_free(struct super_block *sb)
+{ }
+
+static inline int security_sb_copy_data(char *orig, char *copy)
+{
+ return 0;
+}
+
+static inline int security_sb_kern_mount(struct super_block *sb, void *data)
+{
+ return 0;
+}
+
+static inline int security_sb_show_options(struct seq_file *m,
+ struct super_block *sb)
+{
+ return 0;
+}
+
+static inline int security_sb_statfs(struct dentry *dentry)
+{
+ return 0;
+}
+
+static inline int security_sb_mount(char *dev_name, struct path *path,
+ char *type, unsigned long flags,
+ void *data)
+{
+ return 0;
+}
+
+static inline int security_sb_check_sb(struct vfsmount *mnt,
+ struct path *path)
+{
+ return 0;
+}
+
+static inline int security_sb_umount(struct vfsmount *mnt, int flags)
+{
+ return 0;
+}
+
+static inline void security_sb_umount_close(struct vfsmount *mnt)
+{ }
+
+static inline void security_sb_umount_busy(struct vfsmount *mnt)
+{ }
+
+static inline void security_sb_post_remount(struct vfsmount *mnt,
+ unsigned long flags, void *data)
+{ }
+
+static inline void security_sb_post_addmount(struct vfsmount *mnt,
+ struct path *mountpoint)
+{ }
+
+static inline int security_sb_pivotroot(struct path *old_path,
+ struct path *new_path)
+{
+ return 0;
+}
+
+static inline void security_sb_post_pivotroot(struct path *old_path,
+ struct path *new_path)
+{ }
+
+static inline int security_sb_set_mnt_opts(struct super_block *sb,
+ struct security_mnt_opts *opts)
+{
+ return 0;
+}
+
+static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
+ struct super_block *newsb)
+{ }
+
+static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
+{
+ return 0;
+}
+
+static inline int security_inode_alloc(struct inode *inode)
+{
+ return 0;
+}
+
+static inline void security_inode_free(struct inode *inode)
+{ }
+
+static inline int security_inode_init_security(struct inode *inode,
+ struct inode *dir,
+ char **name,
+ void **value,
+ size_t *len)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int security_inode_create(struct inode *dir,
+ struct dentry *dentry,
+ int mode)
+{
+ return 0;
+}
+
+static inline int security_inode_link(struct dentry *old_dentry,
+ struct inode *dir,
+ struct dentry *new_dentry)
+{
+ return 0;
+}
+
+static inline int security_inode_unlink(struct inode *dir,
+ struct dentry *dentry)
+{
+ return 0;
+}
+
+static inline int security_inode_symlink(struct inode *dir,
+ struct dentry *dentry,
+ const char *old_name)
+{
+ return 0;
+}
+
+static inline int security_inode_mkdir(struct inode *dir,
+ struct dentry *dentry,
+ int mode)
+{
+ return 0;
+}
+
+static inline int security_inode_rmdir(struct inode *dir,
+ struct dentry *dentry)
+{
+ return 0;
+}
+
+static inline int security_inode_mknod(struct inode *dir,
+ struct dentry *dentry,
+ int mode, dev_t dev)
+{
+ return 0;
+}
+
+static inline int security_inode_rename(struct inode *old_dir,
+ struct dentry *old_dentry,
+ struct inode *new_dir,
+ struct dentry *new_dentry)
+{
+ return 0;
+}
+
+static inline int security_inode_readlink(struct dentry *dentry)
+{
+ return 0;
+}
+
+static inline int security_inode_follow_link(struct dentry *dentry,
+ struct nameidata *nd)
+{
+ return 0;
+}
+
+static inline int security_inode_permission(struct inode *inode, int mask)
+{
+ return 0;
+}
+
+static inline int security_inode_setattr(struct dentry *dentry,
+ struct iattr *attr)
+{
+ return 0;
+}
+
+static inline int security_inode_getattr(struct vfsmount *mnt,
+ struct dentry *dentry)
+{
+ return 0;
+}
+
+static inline void security_inode_delete(struct inode *inode)
+{ }
+
+static inline int security_inode_setxattr(struct dentry *dentry,
+ const char *name, const void *value, size_t size, int flags)
+{
+ return cap_inode_setxattr(dentry, name, value, size, flags);
+}
+
+static inline void security_inode_post_setxattr(struct dentry *dentry,
+ const char *name, const void *value, size_t size, int flags)
+{ }
+
+static inline int security_inode_getxattr(struct dentry *dentry,
+ const char *name)
+{
+ return 0;
+}
+
+static inline int security_inode_listxattr(struct dentry *dentry)
+{
+ return 0;
+}
+
+static inline int security_inode_removexattr(struct dentry *dentry,
+ const char *name)
+{
+ return cap_inode_removexattr(dentry, name);
+}
+
+static inline int security_inode_need_killpriv(struct dentry *dentry)
+{
+ return cap_inode_need_killpriv(dentry);
+}
+
+static inline int security_inode_killpriv(struct dentry *dentry)
+{
+ return cap_inode_killpriv(dentry);
+}
+
+static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
+{
+ return 0;
+}
+
+static inline void security_inode_getsecid(const struct inode *inode, u32 *secid)
+{
+ *secid = 0;
+}
+
+static inline int security_file_permission(struct file *file, int mask)
+{
+ return 0;
+}
+
+static inline int security_file_alloc(struct file *file)
+{
+ return 0;
+}
+
+static inline void security_file_free(struct file *file)
+{ }
+
+static inline int security_file_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ return 0;
+}
+
+static inline int security_file_mmap(struct file *file, unsigned long reqprot,
+ unsigned long prot,
+ unsigned long flags,
+ unsigned long addr,
+ unsigned long addr_only)
+{
+ return 0;
+}
+
+static inline int security_file_mprotect(struct vm_area_struct *vma,
+ unsigned long reqprot,
+ unsigned long prot)
+{
+ return 0;
+}
+
+static inline int security_file_lock(struct file *file, unsigned int cmd)
+{
+ return 0;
+}
+
+static inline int security_file_fcntl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ return 0;
+}
+
+static inline int security_file_set_fowner(struct file *file)
+{
+ return 0;
+}
+
+static inline int security_file_send_sigiotask(struct task_struct *tsk,
+ struct fown_struct *fown,
+ int sig)
+{
+ return 0;
+}
+
+static inline int security_file_receive(struct file *file)
+{
+ return 0;
+}
+
+static inline int security_dentry_open(struct file *file)
+{
+ return 0;
+}
+
+static inline int security_task_create(unsigned long clone_flags)
+{
+ return 0;
+}
+
+static inline int security_task_alloc(struct task_struct *p)
+{
+ return 0;
+}
+
+static inline void security_task_free(struct task_struct *p)
+{ }
+
+static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
+ int flags)
+{
+ return 0;
+}
+
+static inline int security_task_post_setuid(uid_t old_ruid, uid_t old_euid,
+ uid_t old_suid, int flags)
+{
+ return cap_task_post_setuid(old_ruid, old_euid, old_suid, flags);
+}
+
+static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
+ int flags)
+{
+ return 0;
+}
+
+static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
+{
+ return 0;
+}
+
+static inline int security_task_getpgid(struct task_struct *p)
+{
+ return 0;
+}
+
+static inline int security_task_getsid(struct task_struct *p)
+{
+ return 0;
+}
+
+static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
+{
+ *secid = 0;
+}
+
+static inline int security_task_setgroups(struct group_info *group_info)
+{
+ return 0;
+}
+
+static inline int security_task_setnice(struct task_struct *p, int nice)
+{
+ return cap_task_setnice(p, nice);
+}
+
+static inline int security_task_setioprio(struct task_struct *p, int ioprio)
+{
+ return cap_task_setioprio(p, ioprio);
+}
+
+static inline int security_task_getioprio(struct task_struct *p)
+{
+ return 0;
+}
+
+static inline int security_task_setrlimit(unsigned int resource,
+ struct rlimit *new_rlim)
+{
+ return 0;
+}
+
+static inline int security_task_setscheduler(struct task_struct *p,
+ int policy,
+ struct sched_param *lp)
+{
+ return cap_task_setscheduler(p, policy, lp);
+}
+
+static inline int security_task_getscheduler(struct task_struct *p)
+{
+ return 0;
+}
+
+static inline int security_task_movememory(struct task_struct *p)
+{
+ return 0;
+}
+
+static inline int security_task_kill(struct task_struct *p,
+ struct siginfo *info, int sig,
+ u32 secid)
+{
+ return 0;
+}
+
+static inline int security_task_wait(struct task_struct *p)
+{
+ return 0;
+}
+
+static inline int security_task_prctl(int option, unsigned long arg2,
+ unsigned long arg3,
+ unsigned long arg4,
+ unsigned long arg5, long *rc_p)
+{
+ return cap_task_prctl(option, arg2, arg3, arg3, arg5, rc_p);
+}
+
+static inline void security_task_reparent_to_init(struct task_struct *p)
+{
+ cap_task_reparent_to_init(p);
+}
+
+static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
+{ }
+
+static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
+ short flag)
+{
+ return 0;
+}
+
+static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
+{
+ *secid = 0;
+}
+
+static inline int security_msg_msg_alloc(struct msg_msg *msg)
+{
+ return 0;
+}
+
+static inline void security_msg_msg_free(struct msg_msg *msg)
+{ }
+
+static inline int security_msg_queue_alloc(struct msg_queue *msq)
+{
+ return 0;
+}
+
+static inline void security_msg_queue_free(struct msg_queue *msq)
+{ }
+
+static inline int security_msg_queue_associate(struct msg_queue *msq,
+ int msqflg)
+{
+ return 0;
+}
+
+static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
+{
+ return 0;
+}
+
+static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
+ struct msg_msg *msg, int msqflg)
+{
+ return 0;
+}
+
+static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
+ struct msg_msg *msg,
+ struct task_struct *target,
+ long type, int mode)
+{
+ return 0;
+}
+
+static inline int security_shm_alloc(struct shmid_kernel *shp)
+{
+ return 0;
+}
+
+static inline void security_shm_free(struct shmid_kernel *shp)
+{ }
+
+static inline int security_shm_associate(struct shmid_kernel *shp,
+ int shmflg)
+{
+ return 0;
+}
+
+static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
+{
+ return 0;
+}
+
+static inline int security_shm_shmat(struct shmid_kernel *shp,
+ char __user *shmaddr, int shmflg)
+{
+ return 0;
+}
+
+static inline int security_sem_alloc(struct sem_array *sma)
+{
+ return 0;
+}
+
+static inline void security_sem_free(struct sem_array *sma)
+{ }
+
+static inline int security_sem_associate(struct sem_array *sma, int semflg)
+{
+ return 0;
+}
+
+static inline int security_sem_semctl(struct sem_array *sma, int cmd)
+{
+ return 0;
+}
+
+static inline int security_sem_semop(struct sem_array *sma,
+ struct sembuf *sops, unsigned nsops,
+ int alter)
+{
+ return 0;
+}
+
+static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
+{ }
+
+static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
+{
+ return -EINVAL;
+}
+
+static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
+{
+ return -EINVAL;
+}
+
+static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
+{
+ return cap_netlink_send(sk, skb);
+}
+
+static inline int security_netlink_recv(struct sk_buff *skb, int cap)
+{
+ return cap_netlink_recv(skb, cap);
+}
+
+static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int security_secctx_to_secid(const char *secdata,
+ u32 seclen,
+ u32 *secid)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void security_release_secctx(char *secdata, u32 seclen)
+{
+}
+#endif /* CONFIG_SECURITY */
+
+#ifdef CONFIG_SECURITY_NETWORK
+
+int security_unix_stream_connect(struct socket *sock, struct socket *other,
+ struct sock *newsk);
+int security_unix_may_send(struct socket *sock, struct socket *other);
+int security_socket_create(int family, int type, int protocol, int kern);
+int security_socket_post_create(struct socket *sock, int family,
+ int type, int protocol, int kern);
+int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
+int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
+int security_socket_listen(struct socket *sock, int backlog);
+int security_socket_accept(struct socket *sock, struct socket *newsock);
+void security_socket_post_accept(struct socket *sock, struct socket *newsock);
+int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
+int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
+ int size, int flags);
+int security_socket_getsockname(struct socket *sock);
+int security_socket_getpeername(struct socket *sock);
+int security_socket_getsockopt(struct socket *sock, int level, int optname);
+int security_socket_setsockopt(struct socket *sock, int level, int optname);
+int security_socket_shutdown(struct socket *sock, int how);
+int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
+int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
+ int __user *optlen, unsigned len);
+int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
+int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
+void security_sk_free(struct sock *sk);
+void security_sk_clone(const struct sock *sk, struct sock *newsk);
+void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
+void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
+void security_sock_graft(struct sock*sk, struct socket *parent);
+int security_inet_conn_request(struct sock *sk,
+ struct sk_buff *skb, struct request_sock *req);
+void security_inet_csk_clone(struct sock *newsk,
+ const struct request_sock *req);
+void security_inet_conn_established(struct sock *sk,
+ struct sk_buff *skb);
+
+#else /* CONFIG_SECURITY_NETWORK */
+static inline int security_unix_stream_connect(struct socket *sock,
+ struct socket *other,
+ struct sock *newsk)
+{
+ return 0;
+}
+
+static inline int security_unix_may_send(struct socket *sock,
+ struct socket *other)
+{
+ return 0;
+}
+
+static inline int security_socket_create(int family, int type,
+ int protocol, int kern)
+{
+ return 0;
+}
+
+static inline int security_socket_post_create(struct socket *sock,
+ int family,
+ int type,
+ int protocol, int kern)
+{
+ return 0;
+}
+
+static inline int security_socket_bind(struct socket *sock,
+ struct sockaddr *address,
+ int addrlen)
+{
+ return 0;
+}
+
+static inline int security_socket_connect(struct socket *sock,
+ struct sockaddr *address,
+ int addrlen)
+{
+ return 0;
+}
+
+static inline int security_socket_listen(struct socket *sock, int backlog)
+{
+ return 0;
+}
+
+static inline int security_socket_accept(struct socket *sock,
+ struct socket *newsock)
+{
+ return 0;
+}
+
+static inline void security_socket_post_accept(struct socket *sock,
+ struct socket *newsock)
+{
+}
+
+static inline int security_socket_sendmsg(struct socket *sock,
+ struct msghdr *msg, int size)
+{
+ return 0;
+}
+
+static inline int security_socket_recvmsg(struct socket *sock,
+ struct msghdr *msg, int size,
+ int flags)
+{
+ return 0;
+}
+
+static inline int security_socket_getsockname(struct socket *sock)
+{
+ return 0;
+}
+
+static inline int security_socket_getpeername(struct socket *sock)
+{
+ return 0;
+}
+
+static inline int security_socket_getsockopt(struct socket *sock,
+ int level, int optname)
+{
+ return 0;
+}
+
+static inline int security_socket_setsockopt(struct socket *sock,
+ int level, int optname)
+{
+ return 0;
+}
+
+static inline int security_socket_shutdown(struct socket *sock, int how)
+{
+ return 0;
+}
+static inline int security_sock_rcv_skb(struct sock *sk,
+ struct sk_buff *skb)
+{
+ return 0;
+}
+
+static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
+ int __user *optlen, unsigned len)
+{
+ return -ENOPROTOOPT;
+}
+
+static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
+{
+ return -ENOPROTOOPT;
+}
+
+static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
+{
+ return 0;
+}
+
+static inline void security_sk_free(struct sock *sk)
+{
+}
+
+static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
+{
+}
+
+static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
+{
+}
+
+static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
+{
+}
+
+static inline void security_sock_graft(struct sock *sk, struct socket *parent)
+{
+}
+
+static inline int security_inet_conn_request(struct sock *sk,
+ struct sk_buff *skb, struct request_sock *req)
+{
+ return 0;
+}
+
+static inline void security_inet_csk_clone(struct sock *newsk,
+ const struct request_sock *req)
+{
+}
+
+static inline void security_inet_conn_established(struct sock *sk,
+ struct sk_buff *skb)
+{
+}
+#endif /* CONFIG_SECURITY_NETWORK */
+
+#ifdef CONFIG_SECURITY_NETWORK_XFRM
+
+int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
+int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
+void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
+int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
+int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
+int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
+ struct xfrm_sec_ctx *polsec, u32 secid);
+int security_xfrm_state_delete(struct xfrm_state *x);
+void security_xfrm_state_free(struct xfrm_state *x);
+int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
+int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
+ struct xfrm_policy *xp, struct flowi *fl);
+int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
+void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
+
+#else /* CONFIG_SECURITY_NETWORK_XFRM */
+
+static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
+{
+ return 0;
+}
+
+static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
+{
+ return 0;
+}
+
+static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
+{
+}
+
+static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
+{
+ return 0;
+}
+
+static inline int security_xfrm_state_alloc(struct xfrm_state *x,
+ struct xfrm_user_sec_ctx *sec_ctx)
+{
+ return 0;
+}
+
+static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
+ struct xfrm_sec_ctx *polsec, u32 secid)
+{
+ return 0;
+}
+
+static inline void security_xfrm_state_free(struct xfrm_state *x)
+{
+}
+
+static inline int security_xfrm_state_delete(struct xfrm_state *x)
+{
+ return 0;
+}
+
+static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
+{
+ return 0;
+}
+
+static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
+ struct xfrm_policy *xp, struct flowi *fl)
+{
+ return 1;
+}
+
+static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
+{
+ return 0;
+}
+
+static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
+{
+}
+
+#endif /* CONFIG_SECURITY_NETWORK_XFRM */
+
+#ifdef CONFIG_KEYS
+#ifdef CONFIG_SECURITY
+
+int security_key_alloc(struct key *key, struct task_struct *tsk, unsigned long flags);
+void security_key_free(struct key *key);
+int security_key_permission(key_ref_t key_ref,
+ struct task_struct *context, key_perm_t perm);
+int security_key_getsecurity(struct key *key, char **_buffer);
+
+#else
+
+static inline int security_key_alloc(struct key *key,
+ struct task_struct *tsk,
+ unsigned long flags)
+{
+ return 0;
+}
+
+static inline void security_key_free(struct key *key)
+{
+}
+
+static inline int security_key_permission(key_ref_t key_ref,
+ struct task_struct *context,
+ key_perm_t perm)
+{
+ return 0;
+}
+
+static inline int security_key_getsecurity(struct key *key, char **_buffer)
+{
+ *_buffer = NULL;
+ return 0;
+}
+
+#endif
+#endif /* CONFIG_KEYS */
+
+#ifdef CONFIG_AUDIT
+#ifdef CONFIG_SECURITY
+int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
+int security_audit_rule_known(struct audit_krule *krule);
+int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
+ struct audit_context *actx);
+void security_audit_rule_free(void *lsmrule);
+
+#else
+
+static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
+ void **lsmrule)
+{
+ return 0;
+}
+
+static inline int security_audit_rule_known(struct audit_krule *krule)
+{
+ return 0;
+}
+
+static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
+ void *lsmrule, struct audit_context *actx)
+{
+ return 0;
+}
+
+static inline void security_audit_rule_free(void *lsmrule)
+{ }
+
+#endif /* CONFIG_SECURITY */
+#endif /* CONFIG_AUDIT */
+
+#ifdef CONFIG_SECURITYFS
+
+extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
+ struct dentry *parent, void *data,
+ const struct file_operations *fops);
+extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
+extern void securityfs_remove(struct dentry *dentry);
+
+#else /* CONFIG_SECURITYFS */
+
+static inline struct dentry *securityfs_create_dir(const char *name,
+ struct dentry *parent)
+{
+ return ERR_PTR(-ENODEV);
+}
+
+static inline struct dentry *securityfs_create_file(const char *name,
+ mode_t mode,
+ struct dentry *parent,
+ void *data,
+ const struct file_operations *fops)
+{
+ return ERR_PTR(-ENODEV);
+}
+
+static inline void securityfs_remove(struct dentry *dentry)
+{}
+
+#endif
+
+#endif /* ! __LINUX_SECURITY_H */
+