Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index a376324..a8531b3 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -34,40 +34,48 @@
*
* Security hooks for program execution operations.
*
- * @bprm_set_creds:
- * Save security information in the bprm->security field, typically based
- * on information about the bprm->file, for later use by the apply_creds
- * hook. This hook may also optionally check permissions (e.g. for
- * transitions between security domains).
- * This hook may be called multiple times during a single execve, e.g. for
- * interpreters. The hook can tell whether it has already been called by
- * checking to see if @bprm->security is non-NULL. If so, then the hook
- * may decide either to retain the security information saved earlier or
- * to replace it. The hook must set @bprm->secureexec to 1 if a "secure
- * exec" has happened as a result of this hook call. The flag is used to
- * indicate the need for a sanitized execution environment, and is also
- * passed in the ELF auxiliary table on the initial stack to indicate
- * whether libc should enable secure mode.
+ * @bprm_creds_for_exec:
+ * If the setup in prepare_exec_creds did not setup @bprm->cred->security
+ * properly for executing @bprm->file, update the LSM's portion of
+ * @bprm->cred->security to be what commit_creds needs to install for the
+ * new program. This hook may also optionally check permissions
+ * (e.g. for transitions between security domains).
+ * The hook must set @bprm->secureexec to 1 if AT_SECURE should be set to
+ * request libc enable secure mode.
+ * @bprm contains the linux_binprm structure.
+ * Return 0 if the hook is successful and permission is granted.
+ * @bprm_creds_from_file:
+ * If @file is setpcap, suid, sgid or otherwise marked to change
+ * privilege upon exec, update @bprm->cred to reflect that change.
+ * This is called after finding the binary that will be executed.
+ * without an interpreter. This ensures that the credentials will not
+ * be derived from a script that the binary will need to reopen, which
+ * when reopend may end up being a completely different file. This
+ * hook may also optionally check permissions (e.g. for transitions
+ * between security domains).
+ * The hook must set @bprm->secureexec to 1 if AT_SECURE should be set to
+ * request libc enable secure mode.
+ * The hook must add to @bprm->per_clear any personality flags that
+ * should be cleared from current->personality.
* @bprm contains the linux_binprm structure.
* Return 0 if the hook is successful and permission is granted.
* @bprm_check_security:
* This hook mediates the point when a search for a binary handler will
- * begin. It allows a check the @bprm->security value which is set in the
- * preceding set_creds call. The primary difference from set_creds is
- * that the argv list and envp list are reliably available in @bprm. This
- * hook may be called multiple times during a single execve; and in each
- * pass set_creds is called first.
+ * begin. It allows a check against the @bprm->cred->security value
+ * which was set in the preceding creds_for_exec call. The argv list and
+ * envp list are reliably available in @bprm. This hook may be called
+ * multiple times during a single execve.
* @bprm contains the linux_binprm structure.
* Return 0 if the hook is successful and permission is granted.
* @bprm_committing_creds:
* Prepare to install the new security attributes of a process being
* transformed by an execve operation, based on the old credentials
* pointed to by @current->cred and the information set in @bprm->cred by
- * the bprm_set_creds hook. @bprm points to the linux_binprm structure.
- * This hook is a good place to perform state changes on the process such
- * as closing open file descriptors to which access will no longer be
- * granted when the attributes are changed. This is called immediately
- * before commit_creds().
+ * the bprm_creds_for_exec hook. @bprm points to the linux_binprm
+ * structure. This hook is a good place to perform state changes on the
+ * process such as closing open file descriptors to which access will no
+ * longer be granted when the attributes are changed. This is called
+ * immediately before commit_creds().
* @bprm_committed_creds:
* Tidy up after the installation of the new security attributes of a
* process being transformed by an execve operation. The new credentials
@@ -77,7 +85,7 @@
* state. This is called immediately after commit_creds().
*
* Security hooks for mount using fs_context.
- * [See also Documentation/filesystems/mount_api.txt]
+ * [See also Documentation/filesystems/mount_api.rst]
*
* @fs_context_dup:
* Allocate and attach a security structure to sc->security. This pointer
@@ -103,6 +111,10 @@
* @sb_free_security:
* Deallocate and clear the sb->s_security field.
* @sb contains the super_block structure to be modified.
+ * @sb_free_mnt_opts:
+ * Free memory associated with @mnt_ops.
+ * @sb_eat_lsm_opts:
+ * Eat (scan @orig options) and save them in @mnt_opts.
* @sb_statfs:
* Check permission before obtaining filesystem statistics for the @mnt
* mountpoint.
@@ -136,6 +148,10 @@
* @sb superblock being remounted
* @data contains the filesystem-specific data.
* Return 0 if permission is granted.
+ * @sb_kern_mount:
+ * Mount this @sb if allowed by permissions.
+ * @sb_show_options:
+ * Show (print on @m) mount options for this @sb.
* @sb_umount:
* Check permission before the @mnt file system is unmounted.
* @mnt contains the mounted file system.
@@ -155,6 +171,8 @@
* 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_add_mnt_opt:
+ * Add one mount @option to @mnt_opts.
* @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
@@ -451,6 +469,12 @@
* security module does not know about attribute or a negative error code
* to abort the copy up. Note that the caller is responsible for reading
* and writing the xattrs as this hook is merely a filter.
+ * @d_instantiate:
+ * Fill in @inode security information for a @dentry if allowed.
+ * @getprocattr:
+ * Read attribute @name for process @p and store it into @value if allowed.
+ * @setprocattr:
+ * Write (set) attribute @name to @value, size @size if allowed.
*
* Security hooks for kernfs node operations
*
@@ -611,12 +635,23 @@
* @kernel_load_data:
* Load data provided by userspace.
* @id kernel load data identifier
+ * @contents if a subsequent @kernel_post_load_data will be called.
* Return 0 if permission is granted.
+ * @kernel_post_load_data:
+ * Load data provided by a non-file source (usually userspace buffer).
+ * @buf pointer to buffer containing the data contents.
+ * @size length of the data contents.
+ * @id kernel load data identifier
+ * @description a text description of what was loaded, @id-specific
+ * Return 0 if permission is granted.
+ * This must be paired with a prior @kernel_load_data call that had
+ * @contents set to true.
* @kernel_read_file:
* Read a file specified by userspace.
* @file contains the file structure pointing to the file being read
* by the kernel.
* @id kernel read file identifier
+ * @contents if a subsequent @kernel_post_read_file will be called.
* Return 0 if permission is granted.
* @kernel_post_read_file:
* Read a file specified by userspace.
@@ -625,6 +660,8 @@
* @buf pointer to buffer containing the file contents.
* @size length of the file contents.
* @id kernel read file identifier
+ * This must be paired with a prior @kernel_read_file call that had
+ * @contents set to true.
* Return 0 if permission is granted.
* @task_fix_setuid:
* Update the module's state after setting one or more of the user
@@ -635,6 +672,15 @@
* @old is the set of credentials that are being replaces
* @flags contains one of the LSM_SETID_* values.
* Return 0 on success.
+ * @task_fix_setgid:
+ * Update the module's state after 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.
+ * @new is the set of credentials that will be installed. Modifications
+ * should be made to this rather than to @current->cred.
+ * @old is the set of credentials that are being replaced.
+ * @flags contains one of the LSM_SETID_* values.
+ * Return 0 on success.
* @task_setpgid:
* Check permission before setting the process group identifier of the
* process @p to @pgid.
@@ -782,7 +828,7 @@
* 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
+ * allocate and attach security information to
* SOCK_INODE(sock)->i_security. This hook may be used to update the
* SOCK_INODE(sock)->i_security field with additional information that
* wasn't available when the inode was allocated.
@@ -1113,6 +1159,7 @@
* 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
@@ -1241,22 +1288,22 @@
*
* @binder_set_context_mgr:
* Check whether @mgr is allowed to be the binder context manager.
- * @mgr contains the task_struct for the task being registered.
+ * @mgr contains the struct cred for the current binder process.
* Return 0 if permission is granted.
* @binder_transaction:
* Check whether @from is allowed to invoke a binder transaction call
* to @to.
- * @from contains the task_struct for the sending task.
- * @to contains the task_struct for the receiving task.
+ * @from contains the struct cred for the sending process.
+ * @to contains the struct cred for the receiving process.
* @binder_transfer_binder:
* Check whether @from is allowed to transfer a binder reference to @to.
- * @from contains the task_struct for the sending task.
- * @to contains the task_struct for the receiving task.
+ * @from contains the struct cred for the sending process.
+ * @to contains the struct cred for the receiving process.
* @binder_transfer_file:
* Check whether @from is allowed to transfer @file to @to.
- * @from contains the task_struct for the sending task.
+ * @from contains the struct cred for the sending process.
* @file contains the struct file being transferred.
- * @to contains the task_struct for the receiving task.
+ * @to contains the struct cred for the receiving process.
*
* @ptrace_access_check:
* Check permission before allowing the current process to trace the
@@ -1302,6 +1349,10 @@
* @cap contains the capability <include/linux/capability.h>.
* @opts contains options for the capable check <include/linux/security.h>
* Return 0 if the capability is granted for @tsk.
+ * @quotactl:
+ * Check whether the quotactl syscall is allowed for this @sb.
+ * @quota_on:
+ * Check whether QUOTAON is allowed for this @dentry.
* @syslog:
* Check permission before accessing the kernel message ring or changing
* logging to the console.
@@ -1416,6 +1467,20 @@
* @ctx is a pointer in which to place the allocated security context.
* @ctxlen points to the place to put the length of @ctx.
*
+ * Security hooks for the general notification queue:
+ *
+ * @post_notification:
+ * Check to see if a watch notification can be posted to a particular
+ * queue.
+ * @w_cred: The credentials of the whoever set the watch.
+ * @cred: The event-triggerer's credentials
+ * @n: The notification being posted
+ *
+ * @watch_key:
+ * Check to see if a process is allowed to watch for event notifications
+ * from a key or keyring.
+ * @key: The key to watch.
+ *
* Security hooks for using the eBPF maps and programs functionalities through
* eBPF syscalls.
*
@@ -1449,617 +1514,35 @@
* @bpf_prog_free_security:
* Clean up the security information stored inside bpf prog.
*
- * @locked_down
+ * @locked_down:
* Determine whether a kernel feature that potentially enables arbitrary
* code execution in kernel space should be permitted.
*
* @what: kernel feature being accessed
+ *
+ * Security hooks for perf events
+ *
+ * @perf_event_open:
+ * Check whether the @type of perf_event_open syscall is allowed.
+ * @perf_event_alloc:
+ * Allocate and save perf_event security info.
+ * @perf_event_free:
+ * Release (free) perf_event security info.
+ * @perf_event_read:
+ * Read perf_event security info if allowed.
+ * @perf_event_write:
+ * Write perf_event security info if allowed.
*/
union security_list_options {
- int (*binder_set_context_mgr)(struct task_struct *mgr);
- int (*binder_transaction)(struct task_struct *from,
- struct task_struct *to);
- int (*binder_transfer_binder)(struct task_struct *from,
- struct task_struct *to);
- int (*binder_transfer_file)(struct task_struct *from,
- struct task_struct *to,
- struct file *file);
-
- int (*ptrace_access_check)(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)(struct cred *new, const struct cred *old,
- const kernel_cap_t *effective,
- const kernel_cap_t *inheritable,
- const kernel_cap_t *permitted);
- int (*capable)(const struct cred *cred,
- struct user_namespace *ns,
- int cap,
- unsigned int opts);
- int (*quotactl)(int cmds, int type, int id, struct super_block *sb);
- int (*quota_on)(struct dentry *dentry);
- int (*syslog)(int type);
- int (*settime)(const struct timespec64 *ts, const struct timezone *tz);
- int (*vm_enough_memory)(struct mm_struct *mm, long pages);
-
- int (*bprm_set_creds)(struct linux_binprm *bprm);
- int (*bprm_check_security)(struct linux_binprm *bprm);
- void (*bprm_committing_creds)(struct linux_binprm *bprm);
- void (*bprm_committed_creds)(struct linux_binprm *bprm);
-
- int (*fs_context_dup)(struct fs_context *fc, struct fs_context *src_sc);
- int (*fs_context_parse_param)(struct fs_context *fc, struct fs_parameter *param);
-
- int (*sb_alloc_security)(struct super_block *sb);
- void (*sb_free_security)(struct super_block *sb);
- void (*sb_free_mnt_opts)(void *mnt_opts);
- int (*sb_eat_lsm_opts)(char *orig, void **mnt_opts);
- int (*sb_remount)(struct super_block *sb, void *mnt_opts);
- int (*sb_kern_mount)(struct super_block *sb);
- int (*sb_show_options)(struct seq_file *m, struct super_block *sb);
- int (*sb_statfs)(struct dentry *dentry);
- int (*sb_mount)(const char *dev_name, const struct path *path,
- const char *type, unsigned long flags, void *data);
- int (*sb_umount)(struct vfsmount *mnt, int flags);
- int (*sb_pivotroot)(const struct path *old_path, const struct path *new_path);
- int (*sb_set_mnt_opts)(struct super_block *sb,
- void *mnt_opts,
- unsigned long kern_flags,
- unsigned long *set_kern_flags);
- int (*sb_clone_mnt_opts)(const struct super_block *oldsb,
- struct super_block *newsb,
- unsigned long kern_flags,
- unsigned long *set_kern_flags);
- int (*sb_add_mnt_opt)(const char *option, const char *val, int len,
- void **mnt_opts);
- int (*move_mount)(const struct path *from_path, const struct path *to_path);
- int (*dentry_init_security)(struct dentry *dentry, int mode,
- const struct qstr *name, void **ctx,
- u32 *ctxlen);
- int (*dentry_create_files_as)(struct dentry *dentry, int mode,
- struct qstr *name,
- const struct cred *old,
- struct cred *new);
-
-
-#ifdef CONFIG_SECURITY_PATH
- int (*path_unlink)(const struct path *dir, struct dentry *dentry);
- int (*path_mkdir)(const struct path *dir, struct dentry *dentry,
- umode_t mode);
- int (*path_rmdir)(const struct path *dir, struct dentry *dentry);
- int (*path_mknod)(const struct path *dir, struct dentry *dentry,
- umode_t mode, unsigned int dev);
- int (*path_truncate)(const struct path *path);
- int (*path_symlink)(const struct path *dir, struct dentry *dentry,
- const char *old_name);
- int (*path_link)(struct dentry *old_dentry, const struct path *new_dir,
- struct dentry *new_dentry);
- int (*path_rename)(const struct path *old_dir, struct dentry *old_dentry,
- const struct path *new_dir,
- struct dentry *new_dentry);
- int (*path_chmod)(const struct path *path, umode_t mode);
- int (*path_chown)(const struct path *path, kuid_t uid, kgid_t gid);
- int (*path_chroot)(const struct path *path);
-#endif
- /* Needed for inode based security check */
- int (*path_notify)(const struct path *path, u64 mask,
- unsigned int obj_type);
- int (*inode_alloc_security)(struct inode *inode);
- void (*inode_free_security)(struct inode *inode);
- int (*inode_init_security)(struct inode *inode, struct inode *dir,
- const struct qstr *qstr,
- const char **name, void **value,
- size_t *len);
- int (*inode_create)(struct inode *dir, struct dentry *dentry,
- umode_t 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,
- umode_t mode);
- int (*inode_rmdir)(struct inode *dir, struct dentry *dentry);
- int (*inode_mknod)(struct inode *dir, struct dentry *dentry,
- umode_t 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 inode *inode,
- bool rcu);
- int (*inode_permission)(struct inode *inode, int mask);
- int (*inode_setattr)(struct dentry *dentry, struct iattr *attr);
- int (*inode_getattr)(const struct path *path);
- 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)(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)(struct inode *inode, u32 *secid);
- int (*inode_copy_up)(struct dentry *src, struct cred **new);
- int (*inode_copy_up_xattr)(const char *name);
-
- int (*kernfs_init_security)(struct kernfs_node *kn_dir,
- struct kernfs_node *kn);
-
- 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 (*mmap_addr)(unsigned long addr);
- int (*mmap_file)(struct file *file, unsigned long reqprot,
- unsigned long prot, unsigned long flags);
- 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);
- void (*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 (*file_open)(struct file *file);
-
- int (*task_alloc)(struct task_struct *task, unsigned long clone_flags);
- void (*task_free)(struct task_struct *task);
- int (*cred_alloc_blank)(struct cred *cred, gfp_t gfp);
- void (*cred_free)(struct cred *cred);
- int (*cred_prepare)(struct cred *new, const struct cred *old,
- gfp_t gfp);
- void (*cred_transfer)(struct cred *new, const struct cred *old);
- void (*cred_getsecid)(const struct cred *c, u32 *secid);
- int (*kernel_act_as)(struct cred *new, u32 secid);
- int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
- int (*kernel_module_request)(char *kmod_name);
- int (*kernel_load_data)(enum kernel_load_data_id id);
- int (*kernel_read_file)(struct file *file, enum kernel_read_file_id id);
- int (*kernel_post_read_file)(struct file *file, char *buf, loff_t size,
- enum kernel_read_file_id id);
- int (*task_fix_setuid)(struct cred *new, const struct cred *old,
- 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_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_prlimit)(const struct cred *cred, const struct cred *tcred,
- unsigned int flags);
- int (*task_setrlimit)(struct task_struct *p, unsigned int resource,
- struct rlimit *new_rlim);
- int (*task_setscheduler)(struct task_struct *p);
- int (*task_getscheduler)(struct task_struct *p);
- int (*task_movememory)(struct task_struct *p);
- int (*task_kill)(struct task_struct *p, struct kernel_siginfo *info,
- int sig, const struct cred *cred);
- int (*task_prctl)(int option, unsigned long arg2, unsigned long arg3,
- unsigned long arg4, unsigned long arg5);
- 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 kern_ipc_perm *perm);
- void (*msg_queue_free_security)(struct kern_ipc_perm *perm);
- int (*msg_queue_associate)(struct kern_ipc_perm *perm, int msqflg);
- int (*msg_queue_msgctl)(struct kern_ipc_perm *perm, int cmd);
- int (*msg_queue_msgsnd)(struct kern_ipc_perm *perm, struct msg_msg *msg,
- int msqflg);
- int (*msg_queue_msgrcv)(struct kern_ipc_perm *perm, struct msg_msg *msg,
- struct task_struct *target, long type,
- int mode);
-
- int (*shm_alloc_security)(struct kern_ipc_perm *perm);
- void (*shm_free_security)(struct kern_ipc_perm *perm);
- int (*shm_associate)(struct kern_ipc_perm *perm, int shmflg);
- int (*shm_shmctl)(struct kern_ipc_perm *perm, int cmd);
- int (*shm_shmat)(struct kern_ipc_perm *perm, char __user *shmaddr,
- int shmflg);
-
- int (*sem_alloc_security)(struct kern_ipc_perm *perm);
- void (*sem_free_security)(struct kern_ipc_perm *perm);
- int (*sem_associate)(struct kern_ipc_perm *perm, int semflg);
- int (*sem_semctl)(struct kern_ipc_perm *perm, int cmd);
- int (*sem_semop)(struct kern_ipc_perm *perm, struct sembuf *sops,
- unsigned nsops, int alter);
-
- int (*netlink_send)(struct sock *sk, struct sk_buff *skb);
-
- void (*d_instantiate)(struct dentry *dentry, struct inode *inode);
-
- int (*getprocattr)(struct task_struct *p, char *name, char **value);
- int (*setprocattr)(const char *name, void *value, size_t size);
- int (*ismaclabel)(const char *name);
- 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);
-
- void (*inode_invalidate_secctx)(struct inode *inode);
- int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
- int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
- int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
-
-#ifdef CONFIG_SECURITY_NETWORK
- int (*unix_stream_connect)(struct sock *sock, struct sock *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_socketpair)(struct socket *socka, struct socket *sockb);
- 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);
- 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);
- int (*secmark_relabel_packet)(u32 secid);
- void (*secmark_refcount_inc)(void);
- void (*secmark_refcount_dec)(void);
- void (*req_classify_flow)(const struct request_sock *req,
- struct flowi *fl);
- int (*tun_dev_alloc_security)(void **security);
- void (*tun_dev_free_security)(void *security);
- int (*tun_dev_create)(void);
- int (*tun_dev_attach_queue)(void *security);
- int (*tun_dev_attach)(struct sock *sk, void *security);
- int (*tun_dev_open)(void *security);
- int (*sctp_assoc_request)(struct sctp_endpoint *ep,
- struct sk_buff *skb);
- int (*sctp_bind_connect)(struct sock *sk, int optname,
- struct sockaddr *address, int addrlen);
- void (*sctp_sk_clone)(struct sctp_endpoint *ep, struct sock *sk,
- struct sock *newsk);
-#endif /* CONFIG_SECURITY_NETWORK */
-
-#ifdef CONFIG_SECURITY_INFINIBAND
- int (*ib_pkey_access)(void *sec, u64 subnet_prefix, u16 pkey);
- int (*ib_endport_manage_subnet)(void *sec, const char *dev_name,
- u8 port_num);
- int (*ib_alloc_security)(void **sec);
- void (*ib_free_security)(void *sec);
-#endif /* CONFIG_SECURITY_INFINIBAND */
-
-#ifdef CONFIG_SECURITY_NETWORK_XFRM
- int (*xfrm_policy_alloc_security)(struct xfrm_sec_ctx **ctxp,
- struct xfrm_user_sec_ctx *sec_ctx,
- gfp_t gfp);
- 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)(struct xfrm_state *x,
- struct xfrm_user_sec_ctx *sec_ctx);
- int (*xfrm_state_alloc_acquire)(struct xfrm_state *x,
- struct xfrm_sec_ctx *polsec,
- 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,
- const 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, const struct cred *cred,
- unsigned long flags);
- void (*key_free)(struct key *key);
- int (*key_permission)(key_ref_t key_ref, const struct cred *cred,
- unsigned 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);
- void (*audit_rule_free)(void *lsmrule);
-#endif /* CONFIG_AUDIT */
-
-#ifdef CONFIG_BPF_SYSCALL
- int (*bpf)(int cmd, union bpf_attr *attr,
- unsigned int size);
- int (*bpf_map)(struct bpf_map *map, fmode_t fmode);
- int (*bpf_prog)(struct bpf_prog *prog);
- int (*bpf_map_alloc_security)(struct bpf_map *map);
- void (*bpf_map_free_security)(struct bpf_map *map);
- int (*bpf_prog_alloc_security)(struct bpf_prog_aux *aux);
- void (*bpf_prog_free_security)(struct bpf_prog_aux *aux);
-#endif /* CONFIG_BPF_SYSCALL */
- int (*locked_down)(enum lockdown_reason what);
+ #define LSM_HOOK(RET, DEFAULT, NAME, ...) RET (*NAME)(__VA_ARGS__);
+ #include "lsm_hook_defs.h"
+ #undef LSM_HOOK
};
struct security_hook_heads {
- struct hlist_head binder_set_context_mgr;
- struct hlist_head binder_transaction;
- struct hlist_head binder_transfer_binder;
- struct hlist_head binder_transfer_file;
- struct hlist_head ptrace_access_check;
- struct hlist_head ptrace_traceme;
- struct hlist_head capget;
- struct hlist_head capset;
- struct hlist_head capable;
- struct hlist_head quotactl;
- struct hlist_head quota_on;
- struct hlist_head syslog;
- struct hlist_head settime;
- struct hlist_head vm_enough_memory;
- struct hlist_head bprm_set_creds;
- struct hlist_head bprm_check_security;
- struct hlist_head bprm_committing_creds;
- struct hlist_head bprm_committed_creds;
- struct hlist_head fs_context_dup;
- struct hlist_head fs_context_parse_param;
- struct hlist_head sb_alloc_security;
- struct hlist_head sb_free_security;
- struct hlist_head sb_free_mnt_opts;
- struct hlist_head sb_eat_lsm_opts;
- struct hlist_head sb_remount;
- struct hlist_head sb_kern_mount;
- struct hlist_head sb_show_options;
- struct hlist_head sb_statfs;
- struct hlist_head sb_mount;
- struct hlist_head sb_umount;
- struct hlist_head sb_pivotroot;
- struct hlist_head sb_set_mnt_opts;
- struct hlist_head sb_clone_mnt_opts;
- struct hlist_head sb_add_mnt_opt;
- struct hlist_head move_mount;
- struct hlist_head dentry_init_security;
- struct hlist_head dentry_create_files_as;
-#ifdef CONFIG_SECURITY_PATH
- struct hlist_head path_unlink;
- struct hlist_head path_mkdir;
- struct hlist_head path_rmdir;
- struct hlist_head path_mknod;
- struct hlist_head path_truncate;
- struct hlist_head path_symlink;
- struct hlist_head path_link;
- struct hlist_head path_rename;
- struct hlist_head path_chmod;
- struct hlist_head path_chown;
- struct hlist_head path_chroot;
-#endif
- /* Needed for inode based modules as well */
- struct hlist_head path_notify;
- struct hlist_head inode_alloc_security;
- struct hlist_head inode_free_security;
- struct hlist_head inode_init_security;
- struct hlist_head inode_create;
- struct hlist_head inode_link;
- struct hlist_head inode_unlink;
- struct hlist_head inode_symlink;
- struct hlist_head inode_mkdir;
- struct hlist_head inode_rmdir;
- struct hlist_head inode_mknod;
- struct hlist_head inode_rename;
- struct hlist_head inode_readlink;
- struct hlist_head inode_follow_link;
- struct hlist_head inode_permission;
- struct hlist_head inode_setattr;
- struct hlist_head inode_getattr;
- struct hlist_head inode_setxattr;
- struct hlist_head inode_post_setxattr;
- struct hlist_head inode_getxattr;
- struct hlist_head inode_listxattr;
- struct hlist_head inode_removexattr;
- struct hlist_head inode_need_killpriv;
- struct hlist_head inode_killpriv;
- struct hlist_head inode_getsecurity;
- struct hlist_head inode_setsecurity;
- struct hlist_head inode_listsecurity;
- struct hlist_head inode_getsecid;
- struct hlist_head inode_copy_up;
- struct hlist_head inode_copy_up_xattr;
- struct hlist_head kernfs_init_security;
- struct hlist_head file_permission;
- struct hlist_head file_alloc_security;
- struct hlist_head file_free_security;
- struct hlist_head file_ioctl;
- struct hlist_head mmap_addr;
- struct hlist_head mmap_file;
- struct hlist_head file_mprotect;
- struct hlist_head file_lock;
- struct hlist_head file_fcntl;
- struct hlist_head file_set_fowner;
- struct hlist_head file_send_sigiotask;
- struct hlist_head file_receive;
- struct hlist_head file_open;
- struct hlist_head task_alloc;
- struct hlist_head task_free;
- struct hlist_head cred_alloc_blank;
- struct hlist_head cred_free;
- struct hlist_head cred_prepare;
- struct hlist_head cred_transfer;
- struct hlist_head cred_getsecid;
- struct hlist_head kernel_act_as;
- struct hlist_head kernel_create_files_as;
- struct hlist_head kernel_load_data;
- struct hlist_head kernel_read_file;
- struct hlist_head kernel_post_read_file;
- struct hlist_head kernel_module_request;
- struct hlist_head task_fix_setuid;
- struct hlist_head task_setpgid;
- struct hlist_head task_getpgid;
- struct hlist_head task_getsid;
- struct hlist_head task_getsecid;
- struct hlist_head task_setnice;
- struct hlist_head task_setioprio;
- struct hlist_head task_getioprio;
- struct hlist_head task_prlimit;
- struct hlist_head task_setrlimit;
- struct hlist_head task_setscheduler;
- struct hlist_head task_getscheduler;
- struct hlist_head task_movememory;
- struct hlist_head task_kill;
- struct hlist_head task_prctl;
- struct hlist_head task_to_inode;
- struct hlist_head ipc_permission;
- struct hlist_head ipc_getsecid;
- struct hlist_head msg_msg_alloc_security;
- struct hlist_head msg_msg_free_security;
- struct hlist_head msg_queue_alloc_security;
- struct hlist_head msg_queue_free_security;
- struct hlist_head msg_queue_associate;
- struct hlist_head msg_queue_msgctl;
- struct hlist_head msg_queue_msgsnd;
- struct hlist_head msg_queue_msgrcv;
- struct hlist_head shm_alloc_security;
- struct hlist_head shm_free_security;
- struct hlist_head shm_associate;
- struct hlist_head shm_shmctl;
- struct hlist_head shm_shmat;
- struct hlist_head sem_alloc_security;
- struct hlist_head sem_free_security;
- struct hlist_head sem_associate;
- struct hlist_head sem_semctl;
- struct hlist_head sem_semop;
- struct hlist_head netlink_send;
- struct hlist_head d_instantiate;
- struct hlist_head getprocattr;
- struct hlist_head setprocattr;
- struct hlist_head ismaclabel;
- struct hlist_head secid_to_secctx;
- struct hlist_head secctx_to_secid;
- struct hlist_head release_secctx;
- struct hlist_head inode_invalidate_secctx;
- struct hlist_head inode_notifysecctx;
- struct hlist_head inode_setsecctx;
- struct hlist_head inode_getsecctx;
-#ifdef CONFIG_SECURITY_NETWORK
- struct hlist_head unix_stream_connect;
- struct hlist_head unix_may_send;
- struct hlist_head socket_create;
- struct hlist_head socket_post_create;
- struct hlist_head socket_socketpair;
- struct hlist_head socket_bind;
- struct hlist_head socket_connect;
- struct hlist_head socket_listen;
- struct hlist_head socket_accept;
- struct hlist_head socket_sendmsg;
- struct hlist_head socket_recvmsg;
- struct hlist_head socket_getsockname;
- struct hlist_head socket_getpeername;
- struct hlist_head socket_getsockopt;
- struct hlist_head socket_setsockopt;
- struct hlist_head socket_shutdown;
- struct hlist_head socket_sock_rcv_skb;
- struct hlist_head socket_getpeersec_stream;
- struct hlist_head socket_getpeersec_dgram;
- struct hlist_head sk_alloc_security;
- struct hlist_head sk_free_security;
- struct hlist_head sk_clone_security;
- struct hlist_head sk_getsecid;
- struct hlist_head sock_graft;
- struct hlist_head inet_conn_request;
- struct hlist_head inet_csk_clone;
- struct hlist_head inet_conn_established;
- struct hlist_head secmark_relabel_packet;
- struct hlist_head secmark_refcount_inc;
- struct hlist_head secmark_refcount_dec;
- struct hlist_head req_classify_flow;
- struct hlist_head tun_dev_alloc_security;
- struct hlist_head tun_dev_free_security;
- struct hlist_head tun_dev_create;
- struct hlist_head tun_dev_attach_queue;
- struct hlist_head tun_dev_attach;
- struct hlist_head tun_dev_open;
- struct hlist_head sctp_assoc_request;
- struct hlist_head sctp_bind_connect;
- struct hlist_head sctp_sk_clone;
-#endif /* CONFIG_SECURITY_NETWORK */
-#ifdef CONFIG_SECURITY_INFINIBAND
- struct hlist_head ib_pkey_access;
- struct hlist_head ib_endport_manage_subnet;
- struct hlist_head ib_alloc_security;
- struct hlist_head ib_free_security;
-#endif /* CONFIG_SECURITY_INFINIBAND */
-#ifdef CONFIG_SECURITY_NETWORK_XFRM
- struct hlist_head xfrm_policy_alloc_security;
- struct hlist_head xfrm_policy_clone_security;
- struct hlist_head xfrm_policy_free_security;
- struct hlist_head xfrm_policy_delete_security;
- struct hlist_head xfrm_state_alloc;
- struct hlist_head xfrm_state_alloc_acquire;
- struct hlist_head xfrm_state_free_security;
- struct hlist_head xfrm_state_delete_security;
- struct hlist_head xfrm_policy_lookup;
- struct hlist_head xfrm_state_pol_flow_match;
- struct hlist_head xfrm_decode_session;
-#endif /* CONFIG_SECURITY_NETWORK_XFRM */
-#ifdef CONFIG_KEYS
- struct hlist_head key_alloc;
- struct hlist_head key_free;
- struct hlist_head key_permission;
- struct hlist_head key_getsecurity;
-#endif /* CONFIG_KEYS */
-#ifdef CONFIG_AUDIT
- struct hlist_head audit_rule_init;
- struct hlist_head audit_rule_known;
- struct hlist_head audit_rule_match;
- struct hlist_head audit_rule_free;
-#endif /* CONFIG_AUDIT */
-#ifdef CONFIG_BPF_SYSCALL
- struct hlist_head bpf;
- struct hlist_head bpf_map;
- struct hlist_head bpf_prog;
- struct hlist_head bpf_map_alloc_security;
- struct hlist_head bpf_map_free_security;
- struct hlist_head bpf_prog_alloc_security;
- struct hlist_head bpf_prog_free_security;
-#endif /* CONFIG_BPF_SYSCALL */
- struct hlist_head locked_down;
+ #define LSM_HOOK(RET, DEFAULT, NAME, ...) struct hlist_head NAME;
+ #include "lsm_hook_defs.h"
+ #undef LSM_HOOK
} __randomize_layout;
/*
@@ -2086,6 +1569,12 @@
};
/*
+ * LSM_RET_VOID is used as the default value in LSM_HOOK definitions for void
+ * LSM hooks (in include/linux/lsm_hook_defs.h).
+ */
+#define LSM_RET_VOID ((void) 0)
+
+/*
* Initializing a security_hook_list structure takes
* up a lot of space in a source file. This macro takes
* care of the common case and reduces the amount of
@@ -2122,12 +1611,12 @@
#define DEFINE_LSM(lsm) \
static struct lsm_info __lsm_##lsm \
- __used __section(.lsm_info.init) \
+ __used __section(".lsm_info.init") \
__aligned(sizeof(unsigned long))
#define DEFINE_EARLY_LSM(lsm) \
static struct lsm_info __early_lsm_##lsm \
- __used __section(.early_lsm_info.init) \
+ __used __section(".early_lsm_info.init") \
__aligned(sizeof(unsigned long))
#ifdef CONFIG_SECURITY_SELINUX_DISABLE