diff options
Diffstat (limited to 'security/tomoyo/init.c')
| -rw-r--r-- | security/tomoyo/init.c | 366 |
1 files changed, 0 insertions, 366 deletions
diff --git a/security/tomoyo/init.c b/security/tomoyo/init.c deleted file mode 100644 index 034e7db22d4e..000000000000 --- a/security/tomoyo/init.c +++ /dev/null @@ -1,366 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * security/tomoyo/init.c - * - * Copyright (C) 2005-2011 NTT DATA CORPORATION - */ - -#include <linux/lsm_hooks.h> -#include <uapi/linux/lsm.h> -#include "common.h" - -#ifndef CONFIG_SECURITY_TOMOYO_LKM - -#include "hooks.h" - -#else - -#define DEFINE_STATIC_CALL_PROXY(NAME) \ - static NAME##_t tomoyo_##NAME; \ - DEFINE_STATIC_CALL_RET0(tomoyo_##NAME, tomoyo_##NAME); -DEFINE_STATIC_CALL_PROXY(cred_prepare) -DEFINE_STATIC_CALL_PROXY(bprm_committed_creds) -DEFINE_STATIC_CALL_PROXY(bprm_check_security) -DEFINE_STATIC_CALL_PROXY(inode_getattr) -DEFINE_STATIC_CALL_PROXY(path_truncate) -DEFINE_STATIC_CALL_PROXY(file_truncate) -DEFINE_STATIC_CALL_PROXY(path_unlink) -DEFINE_STATIC_CALL_PROXY(path_mkdir) -DEFINE_STATIC_CALL_PROXY(path_rmdir) -DEFINE_STATIC_CALL_PROXY(path_symlink) -DEFINE_STATIC_CALL_PROXY(path_mknod) -DEFINE_STATIC_CALL_PROXY(path_link) -DEFINE_STATIC_CALL_PROXY(path_rename) -DEFINE_STATIC_CALL_PROXY(file_fcntl) -DEFINE_STATIC_CALL_PROXY(file_open) -DEFINE_STATIC_CALL_PROXY(file_ioctl) -DEFINE_STATIC_CALL_PROXY(path_chmod) -DEFINE_STATIC_CALL_PROXY(path_chown) -DEFINE_STATIC_CALL_PROXY(path_chroot) -DEFINE_STATIC_CALL_PROXY(sb_mount) -DEFINE_STATIC_CALL_PROXY(sb_umount) -DEFINE_STATIC_CALL_PROXY(sb_pivotroot) -DEFINE_STATIC_CALL_PROXY(socket_listen) -DEFINE_STATIC_CALL_PROXY(socket_connect) -DEFINE_STATIC_CALL_PROXY(socket_bind) -DEFINE_STATIC_CALL_PROXY(socket_sendmsg) -DEFINE_STATIC_CALL_PROXY(task_alloc) -DEFINE_STATIC_CALL_PROXY(task_free) -#undef DEFINE_STATIC_CALL_PROXY - -static int tomoyo_cred_prepare(struct cred *new, const struct cred *old, gfp_t gfp) -{ - return static_call(tomoyo_cred_prepare)(new, old, gfp); -} - -static void tomoyo_bprm_committed_creds(const struct linux_binprm *bprm) -{ - static_call(tomoyo_bprm_committed_creds)(bprm); -} - -static int tomoyo_bprm_check_security(struct linux_binprm *bprm) -{ - return static_call(tomoyo_bprm_check_security)(bprm); -} - -static int tomoyo_inode_getattr(const struct path *path) -{ - return static_call(tomoyo_inode_getattr)(path); -} - -static int tomoyo_path_truncate(const struct path *path) -{ - return static_call(tomoyo_path_truncate)(path); -} - -static int tomoyo_file_truncate(struct file *file) -{ - return static_call(tomoyo_file_truncate)(file); -} - -static int tomoyo_path_unlink(const struct path *parent, struct dentry *dentry) -{ - return static_call(tomoyo_path_unlink)(parent, dentry); -} - -static int tomoyo_path_mkdir(const struct path *parent, struct dentry *dentry, umode_t mode) -{ - return static_call(tomoyo_path_mkdir)(parent, dentry, mode); -} - -static int tomoyo_path_rmdir(const struct path *parent, struct dentry *dentry) -{ - return static_call(tomoyo_path_rmdir)(parent, dentry); -} - -static int tomoyo_path_symlink(const struct path *parent, struct dentry *dentry, - const char *old_name) -{ - return static_call(tomoyo_path_symlink)(parent, dentry, old_name); -} - -static int tomoyo_path_mknod(const struct path *parent, struct dentry *dentry, - umode_t mode, unsigned int dev) -{ - return static_call(tomoyo_path_mknod)(parent, dentry, mode, dev); -} - -static int tomoyo_path_link(struct dentry *old_dentry, const struct path *new_dir, - struct dentry *new_dentry) -{ - return static_call(tomoyo_path_link)(old_dentry, new_dir, new_dentry); -} - -static int tomoyo_path_rename(const struct path *old_parent, struct dentry *old_dentry, - const struct path *new_parent, struct dentry *new_dentry, - const unsigned int flags) -{ - return static_call(tomoyo_path_rename)(old_parent, old_dentry, new_parent, new_dentry, flags); -} - -static int tomoyo_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) -{ - return static_call(tomoyo_file_fcntl)(file, cmd, arg); -} - -static int tomoyo_file_open(struct file *f) -{ - return static_call(tomoyo_file_open)(f); -} - -static int tomoyo_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - return static_call(tomoyo_file_ioctl)(file, cmd, arg); -} - -static int tomoyo_path_chmod(const struct path *path, umode_t mode) -{ - return static_call(tomoyo_path_chmod)(path, mode); -} - -static int tomoyo_path_chown(const struct path *path, kuid_t uid, kgid_t gid) -{ - return static_call(tomoyo_path_chown)(path, uid, gid); -} - -static int tomoyo_path_chroot(const struct path *path) -{ - return static_call(tomoyo_path_chroot)(path); -} - -static int tomoyo_sb_mount(const char *dev_name, const struct path *path, - const char *type, unsigned long flags, void *data) -{ - return static_call(tomoyo_sb_mount)(dev_name, path, type, flags, data); -} - -static int tomoyo_sb_umount(struct vfsmount *mnt, int flags) -{ - return static_call(tomoyo_sb_umount)(mnt, flags); -} - -static int tomoyo_sb_pivotroot(const struct path *old_path, const struct path *new_path) -{ - return static_call(tomoyo_sb_pivotroot)(old_path, new_path); -} - -static int tomoyo_socket_listen(struct socket *sock, int backlog) -{ - return static_call(tomoyo_socket_listen)(sock, backlog); -} - -static int tomoyo_socket_connect(struct socket *sock, struct sockaddr *addr, int addr_len) -{ - return static_call(tomoyo_socket_connect)(sock, addr, addr_len); -} - -static int tomoyo_socket_bind(struct socket *sock, struct sockaddr *addr, int addr_len) -{ - return static_call(tomoyo_socket_bind)(sock, addr, addr_len); -} - -static int tomoyo_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) -{ - return static_call(tomoyo_socket_sendmsg)(sock, msg, size); -} - -static int tomoyo_task_alloc(struct task_struct *task, unsigned long clone_flags) -{ - return static_call(tomoyo_task_alloc)(task, clone_flags); -} - -static void tomoyo_task_free(struct task_struct *task) -{ - static_call(tomoyo_task_free)(task); -} - -void tomoyo_register_hooks(const struct tomoyo_hooks *tomoyo_hooks) -{ - static void *registered; - - if (cmpxchg(®istered, NULL, ®istered)) - panic("%s was called twice!\n", __func__); - static_call_update(tomoyo_task_free, tomoyo_hooks->task_free); - static_call_update(tomoyo_task_alloc, tomoyo_hooks->task_alloc); - static_call_update(tomoyo_cred_prepare, tomoyo_hooks->cred_prepare); - static_call_update(tomoyo_bprm_committed_creds, tomoyo_hooks->bprm_committed_creds); - static_call_update(tomoyo_bprm_check_security, tomoyo_hooks->bprm_check_security); - static_call_update(tomoyo_inode_getattr, tomoyo_hooks->inode_getattr); - static_call_update(tomoyo_path_truncate, tomoyo_hooks->path_truncate); - static_call_update(tomoyo_file_truncate, tomoyo_hooks->file_truncate); - static_call_update(tomoyo_path_unlink, tomoyo_hooks->path_unlink); - static_call_update(tomoyo_path_mkdir, tomoyo_hooks->path_mkdir); - static_call_update(tomoyo_path_rmdir, tomoyo_hooks->path_rmdir); - static_call_update(tomoyo_path_symlink, tomoyo_hooks->path_symlink); - static_call_update(tomoyo_path_mknod, tomoyo_hooks->path_mknod); - static_call_update(tomoyo_path_link, tomoyo_hooks->path_link); - static_call_update(tomoyo_path_rename, tomoyo_hooks->path_rename); - static_call_update(tomoyo_file_fcntl, tomoyo_hooks->file_fcntl); - static_call_update(tomoyo_file_open, tomoyo_hooks->file_open); - static_call_update(tomoyo_file_ioctl, tomoyo_hooks->file_ioctl); - static_call_update(tomoyo_path_chmod, tomoyo_hooks->path_chmod); - static_call_update(tomoyo_path_chown, tomoyo_hooks->path_chown); - static_call_update(tomoyo_path_chroot, tomoyo_hooks->path_chroot); - static_call_update(tomoyo_sb_mount, tomoyo_hooks->sb_mount); - static_call_update(tomoyo_sb_umount, tomoyo_hooks->sb_umount); - static_call_update(tomoyo_sb_pivotroot, tomoyo_hooks->sb_pivotroot); - static_call_update(tomoyo_socket_listen, tomoyo_hooks->socket_listen); - static_call_update(tomoyo_socket_connect, tomoyo_hooks->socket_connect); - static_call_update(tomoyo_socket_bind, tomoyo_hooks->socket_bind); - static_call_update(tomoyo_socket_sendmsg, tomoyo_hooks->socket_sendmsg); -} -EXPORT_SYMBOL_GPL(tomoyo_register_hooks); - -/* - * Temporary hack: functions needed by tomoyo.ko . This hack will be removed - * after all functions are marked as EXPORT_STMBOL_GPL(). - */ -#undef find_task_by_vpid -#undef find_task_by_pid_ns -#undef put_filesystem -#undef get_mm_exe_file -#undef d_absolute_path -const struct tomoyo_tmp_exports tomoyo_tmp_exports = { - .find_task_by_vpid = find_task_by_vpid, - .find_task_by_pid_ns = find_task_by_pid_ns, - .put_filesystem = put_filesystem, - .get_mm_exe_file = get_mm_exe_file, - .d_absolute_path = d_absolute_path, -}; -EXPORT_SYMBOL_GPL(tomoyo_tmp_exports); - -#endif - -#ifndef CONFIG_SECURITY_TOMOYO_OMIT_USERSPACE_LOADER -static int tomoyo_bprm_creds_for_exec(struct linux_binprm *bprm) -{ - /* - * Load policy if /sbin/tomoyo-init exists and /sbin/init is requested - * for the first time. - */ - if (!tomoyo_policy_loaded) - tomoyo_load_policy(bprm->filename); - return 0; -} -#endif - -struct lsm_blob_sizes tomoyo_blob_sizes __ro_after_init = { - .lbs_task = sizeof(struct tomoyo_task), -}; - -static const struct lsm_id tomoyo_lsmid = { - .name = "tomoyo", - .id = LSM_ID_TOMOYO, -}; - -/* tomoyo_hooks is used for registering TOMOYO. */ -static struct security_hook_list tomoyo_hooks[] __ro_after_init = { - LSM_HOOK_INIT(cred_prepare, tomoyo_cred_prepare), - LSM_HOOK_INIT(bprm_committed_creds, tomoyo_bprm_committed_creds), - LSM_HOOK_INIT(task_alloc, tomoyo_task_alloc), - LSM_HOOK_INIT(task_free, tomoyo_task_free), -#ifndef CONFIG_SECURITY_TOMOYO_OMIT_USERSPACE_LOADER - LSM_HOOK_INIT(bprm_creds_for_exec, tomoyo_bprm_creds_for_exec), -#endif - LSM_HOOK_INIT(bprm_check_security, tomoyo_bprm_check_security), - LSM_HOOK_INIT(file_fcntl, tomoyo_file_fcntl), - LSM_HOOK_INIT(file_open, tomoyo_file_open), - LSM_HOOK_INIT(file_truncate, tomoyo_file_truncate), - LSM_HOOK_INIT(path_truncate, tomoyo_path_truncate), - LSM_HOOK_INIT(path_unlink, tomoyo_path_unlink), - LSM_HOOK_INIT(path_mkdir, tomoyo_path_mkdir), - LSM_HOOK_INIT(path_rmdir, tomoyo_path_rmdir), - LSM_HOOK_INIT(path_symlink, tomoyo_path_symlink), - LSM_HOOK_INIT(path_mknod, tomoyo_path_mknod), - LSM_HOOK_INIT(path_link, tomoyo_path_link), - LSM_HOOK_INIT(path_rename, tomoyo_path_rename), - LSM_HOOK_INIT(inode_getattr, tomoyo_inode_getattr), - LSM_HOOK_INIT(file_ioctl, tomoyo_file_ioctl), - LSM_HOOK_INIT(file_ioctl_compat, tomoyo_file_ioctl), - LSM_HOOK_INIT(path_chmod, tomoyo_path_chmod), - LSM_HOOK_INIT(path_chown, tomoyo_path_chown), - LSM_HOOK_INIT(path_chroot, tomoyo_path_chroot), - LSM_HOOK_INIT(sb_mount, tomoyo_sb_mount), - LSM_HOOK_INIT(sb_umount, tomoyo_sb_umount), - LSM_HOOK_INIT(sb_pivotroot, tomoyo_sb_pivotroot), - LSM_HOOK_INIT(socket_bind, tomoyo_socket_bind), - LSM_HOOK_INIT(socket_connect, tomoyo_socket_connect), - LSM_HOOK_INIT(socket_listen, tomoyo_socket_listen), - LSM_HOOK_INIT(socket_sendmsg, tomoyo_socket_sendmsg), -}; - -int tomoyo_enabled __ro_after_init = 1; - -/* Has /sbin/init started? */ -bool tomoyo_policy_loaded; - -#ifdef CONFIG_SECURITY_TOMOYO_LKM -EXPORT_SYMBOL_GPL(tomoyo_blob_sizes); -EXPORT_SYMBOL_GPL(tomoyo_policy_loaded); - -struct tomoyo_operations tomoyo_ops; -EXPORT_SYMBOL_GPL(tomoyo_ops); - -/** - * tomoyo_init - Reserve hooks for TOMOYO Linux. - * - * Returns 0. - */ -static int __init tomoyo_init(void) -{ - /* register ourselves with the security framework */ - security_add_hooks(tomoyo_hooks, ARRAY_SIZE(tomoyo_hooks), &tomoyo_lsmid); - tomoyo_ops.enabled = tomoyo_enabled; - pr_info("Hooks for initializing TOMOYO Linux are ready\n"); - return 0; -} -#else -/** - * tomoyo_init - Register TOMOYO Linux as a LSM module. - * - * Returns 0. - */ -static int __init tomoyo_init(void) -{ - struct tomoyo_task *s = tomoyo_task(current); - - /* register ourselves with the security framework */ - security_add_hooks(tomoyo_hooks, ARRAY_SIZE(tomoyo_hooks), - &tomoyo_lsmid); - pr_info("TOMOYO Linux initialized\n"); - s->domain_info = &tomoyo_kernel_domain; - atomic_inc(&tomoyo_kernel_domain.users); - s->old_domain_info = NULL; - tomoyo_mm_init(); - - return 0; -} -#endif - -DEFINE_LSM(tomoyo) = { - .name = "tomoyo", - .enabled = &tomoyo_enabled, - .flags = LSM_FLAG_LEGACY_MAJOR, - .blobs = &tomoyo_blob_sizes, - .init = tomoyo_init, -}; |