tomoyo.c | Explore in Territory

// SPDX-License-Identifier: GPL-2.0
/*
 * security/tomoyo/tomoyo.c
 *
 * Copyright (C) 2005-2011  NTT DATA CORPORATION
 */

#include <linux/lsm_hooks.h>
#include <uapi/linux/lsm.h>
#include "common.h"

/**
 * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread.
 *
 * Returns pointer to "struct tomoyo_domain_info" for current thread.
 */
struct tomoyo_domain_info *tomoyo_domain(void)
{ … }

/**
 * tomoyo_cred_prepare - Target for security_prepare_creds().
 *
 * @new: Pointer to "struct cred".
 * @old: Pointer to "struct cred".
 * @gfp: Memory allocation flags.
 *
 * Returns 0.
 */
static int tomoyo_cred_prepare(struct cred *new, const struct cred *old,
			       gfp_t gfp)
{ … }

/**
 * tomoyo_bprm_committed_creds - Target for security_bprm_committed_creds().
 *
 * @bprm: Pointer to "struct linux_binprm".
 */
static void tomoyo_bprm_committed_creds(const struct linux_binprm *bprm)
{ … }

#ifndef CONFIG_SECURITY_TOMOYO_OMIT_USERSPACE_LOADER
/**
 * tomoyo_bprm_creds_for_exec - Target for security_bprm_creds_for_exec().
 *
 * @bprm: Pointer to "struct linux_binprm".
 *
 * Returns 0.
 */
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

/**
 * tomoyo_bprm_check_security - Target for security_bprm_check().
 *
 * @bprm: Pointer to "struct linux_binprm".
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_bprm_check_security(struct linux_binprm *bprm)
{ … }

/**
 * tomoyo_inode_getattr - Target for security_inode_getattr().
 *
 * @path: Pointer to "struct path".
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_inode_getattr(const struct path *path)
{ … }

/**
 * tomoyo_path_truncate - Target for security_path_truncate().
 *
 * @path: Pointer to "struct path".
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_path_truncate(const struct path *path)
{ … }

/**
 * tomoyo_file_truncate - Target for security_file_truncate().
 *
 * @file: Pointer to "struct file".
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_file_truncate(struct file *file)
{ … }

/**
 * tomoyo_path_unlink - Target for security_path_unlink().
 *
 * @parent: Pointer to "struct path".
 * @dentry: Pointer to "struct dentry".
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_path_unlink(const struct path *parent, struct dentry *dentry)
{ … }

/**
 * tomoyo_path_mkdir - Target for security_path_mkdir().
 *
 * @parent: Pointer to "struct path".
 * @dentry: Pointer to "struct dentry".
 * @mode:   DAC permission mode.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_path_mkdir(const struct path *parent, struct dentry *dentry,
			     umode_t mode)
{ … }

/**
 * tomoyo_path_rmdir - Target for security_path_rmdir().
 *
 * @parent: Pointer to "struct path".
 * @dentry: Pointer to "struct dentry".
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_path_rmdir(const struct path *parent, struct dentry *dentry)
{ … }

/**
 * tomoyo_path_symlink - Target for security_path_symlink().
 *
 * @parent:   Pointer to "struct path".
 * @dentry:   Pointer to "struct dentry".
 * @old_name: Symlink's content.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_path_symlink(const struct path *parent, struct dentry *dentry,
			       const char *old_name)
{ … }

/**
 * tomoyo_path_mknod - Target for security_path_mknod().
 *
 * @parent: Pointer to "struct path".
 * @dentry: Pointer to "struct dentry".
 * @mode:   DAC permission mode.
 * @dev:    Device attributes.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_path_mknod(const struct path *parent, struct dentry *dentry,
			     umode_t mode, unsigned int dev)
{ … }

/**
 * tomoyo_path_link - Target for security_path_link().
 *
 * @old_dentry: Pointer to "struct dentry".
 * @new_dir:    Pointer to "struct path".
 * @new_dentry: Pointer to "struct dentry".
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_path_link(struct dentry *old_dentry, const struct path *new_dir,
			    struct dentry *new_dentry)
{ … }

/**
 * tomoyo_path_rename - Target for security_path_rename().
 *
 * @old_parent: Pointer to "struct path".
 * @old_dentry: Pointer to "struct dentry".
 * @new_parent: Pointer to "struct path".
 * @new_dentry: Pointer to "struct dentry".
 * @flags: Rename options.
 *
 * Returns 0 on success, negative value otherwise.
 */
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)
{ … }

/**
 * tomoyo_file_fcntl - Target for security_file_fcntl().
 *
 * @file: Pointer to "struct file".
 * @cmd:  Command for fcntl().
 * @arg:  Argument for @cmd.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_file_fcntl(struct file *file, unsigned int cmd,
			     unsigned long arg)
{ … }

/**
 * tomoyo_file_open - Target for security_file_open().
 *
 * @f: Pointer to "struct file".
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_file_open(struct file *f)
{ … }

/**
 * tomoyo_file_ioctl - Target for security_file_ioctl().
 *
 * @file: Pointer to "struct file".
 * @cmd:  Command for ioctl().
 * @arg:  Argument for @cmd.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_file_ioctl(struct file *file, unsigned int cmd,
			     unsigned long arg)
{ … }

/**
 * tomoyo_path_chmod - Target for security_path_chmod().
 *
 * @path: Pointer to "struct path".
 * @mode: DAC permission mode.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_path_chmod(const struct path *path, umode_t mode)
{ … }

/**
 * tomoyo_path_chown - Target for security_path_chown().
 *
 * @path: Pointer to "struct path".
 * @uid:  Owner ID.
 * @gid:  Group ID.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
{ … }

/**
 * tomoyo_path_chroot - Target for security_path_chroot().
 *
 * @path: Pointer to "struct path".
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_path_chroot(const struct path *path)
{ … }

/**
 * tomoyo_sb_mount - Target for security_sb_mount().
 *
 * @dev_name: Name of device file. Maybe NULL.
 * @path:     Pointer to "struct path".
 * @type:     Name of filesystem type. Maybe NULL.
 * @flags:    Mount options.
 * @data:     Optional data. Maybe NULL.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_sb_mount(const char *dev_name, const struct path *path,
			   const char *type, unsigned long flags, void *data)
{ … }

/**
 * tomoyo_sb_umount - Target for security_sb_umount().
 *
 * @mnt:   Pointer to "struct vfsmount".
 * @flags: Unmount options.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_sb_umount(struct vfsmount *mnt, int flags)
{ … }

/**
 * tomoyo_sb_pivotroot - Target for security_sb_pivotroot().
 *
 * @old_path: Pointer to "struct path".
 * @new_path: Pointer to "struct path".
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_sb_pivotroot(const struct path *old_path, const struct path *new_path)
{ … }

/**
 * tomoyo_socket_listen - Check permission for listen().
 *
 * @sock:    Pointer to "struct socket".
 * @backlog: Backlog parameter.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_socket_listen(struct socket *sock, int backlog)
{ … }

/**
 * tomoyo_socket_connect - Check permission for connect().
 *
 * @sock:     Pointer to "struct socket".
 * @addr:     Pointer to "struct sockaddr".
 * @addr_len: Size of @addr.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_socket_connect(struct socket *sock, struct sockaddr *addr,
				 int addr_len)
{ … }

/**
 * tomoyo_socket_bind - Check permission for bind().
 *
 * @sock:     Pointer to "struct socket".
 * @addr:     Pointer to "struct sockaddr".
 * @addr_len: Size of @addr.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_socket_bind(struct socket *sock, struct sockaddr *addr,
			      int addr_len)
{ … }

/**
 * tomoyo_socket_sendmsg - Check permission for sendmsg().
 *
 * @sock: Pointer to "struct socket".
 * @msg:  Pointer to "struct msghdr".
 * @size: Size of message.
 *
 * Returns 0 on success, negative value otherwise.
 */
static int tomoyo_socket_sendmsg(struct socket *sock, struct msghdr *msg,
				 int size)
{ … }

struct lsm_blob_sizes tomoyo_blob_sizes __ro_after_init = …;

/**
 * tomoyo_task_alloc - Target for security_task_alloc().
 *
 * @task:        Pointer to "struct task_struct".
 * @clone_flags: clone() flags.
 *
 * Returns 0.
 */
static int tomoyo_task_alloc(struct task_struct *task,
			     unsigned long clone_flags)
{ … }

/**
 * tomoyo_task_free - Target for security_task_free().
 *
 * @task: Pointer to "struct task_struct".
 */
static void tomoyo_task_free(struct task_struct *task)
{ … }

static const struct lsm_id tomoyo_lsmid = …;

/*
 * tomoyo_security_ops is a "struct security_operations" which is used for
 * registering TOMOYO.
 */
static struct security_hook_list tomoyo_hooks[] __ro_after_init = …;

/* Lock for GC. */
DEFINE_SRCU(…);

int tomoyo_enabled __ro_after_init = …;

/**
 * tomoyo_init - Register TOMOYO Linux as a LSM module.
 *
 * Returns 0.
 */
static int __init tomoyo_init(void)
{ … }

DEFINE_LSM(tomoyo) = …;
linux/security/tomoyo/tomoyo.c
