diff options
Diffstat (limited to 'include/linux/security.h')
| -rw-r--r-- | include/linux/security.h | 2884 |
1 files changed, 1061 insertions, 1823 deletions
diff --git a/include/linux/security.h b/include/linux/security.h index 7ce53ae1266b..83a646d72f6f 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -6,6 +6,7 @@ * 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) + * Copyright (C) 2016 Mellanox Techonologies * * 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 @@ -22,17 +23,26 @@ #ifndef __LINUX_SECURITY_H #define __LINUX_SECURITY_H +#include <linux/kernel_read_file.h> #include <linux/key.h> #include <linux/capability.h> +#include <linux/fs.h> #include <linux/slab.h> #include <linux/err.h> #include <linux/string.h> +#include <linux/mm.h> +#include <linux/sockptr.h> +#include <linux/bpf.h> +#include <uapi/linux/lsm.h> +#include <linux/lsm/selinux.h> +#include <linux/lsm/smack.h> +#include <linux/lsm/apparmor.h> +#include <linux/lsm/bpf.h> struct linux_binprm; struct cred; struct rlimit; -struct siginfo; -struct sem_array; +struct kernel_siginfo; struct sembuf; struct kern_ipc_perm; struct audit_context; @@ -43,25 +53,29 @@ struct file; struct vfsmount; struct path; struct qstr; -struct nameidata; struct iattr; struct fown_struct; struct file_operations; -struct shmid_kernel; struct msg_msg; -struct msg_queue; struct xattr; +struct kernfs_node; struct xfrm_sec_ctx; struct mm_struct; - -/* Maximum number of letters for an LSM name string */ -#define SECURITY_NAME_MAX 10 - +struct fs_context; +struct fs_parameter; +enum fs_value_type; +struct watch; +struct watch_notification; +struct lsm_ctx; + +/* Default (no) options for the capable function */ +#define CAP_OPT_NONE 0x0 /* If capable should audit the security request */ -#define SECURITY_CAP_NOAUDIT 0 -#define SECURITY_CAP_AUDIT 1 +#define CAP_OPT_NOAUDIT BIT(1) +/* If capable is being called by a setid function */ +#define CAP_OPT_INSETID BIT(2) -/* LSM Agnostic defines for sb_set_mnt_opts */ +/* LSM Agnostic defines for security_sb_set_mnt_opts() flags */ #define SECURITY_LSM_NATIVE_LABELS 1 struct ctl_table; @@ -69,30 +83,115 @@ struct audit_krule; struct user_namespace; struct timezone; +enum lsm_event { + LSM_POLICY_CHANGE, + LSM_STARTED_ALL, +}; + +struct dm_verity_digest { + const char *alg; + const u8 *digest; + size_t digest_len; +}; + +enum lsm_integrity_type { + LSM_INT_DMVERITY_SIG_VALID, + LSM_INT_DMVERITY_ROOTHASH, + LSM_INT_FSVERITY_BUILTINSIG_VALID, +}; + /* - * These functions are in security/capability.c and are used - * as the default capabilities functions + * These are reasons that can be passed to the security_locked_down() + * LSM hook. Lockdown reasons that protect kernel integrity (ie, the + * ability for userland to modify kernel code) are placed before + * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel + * confidentiality (ie, the ability for userland to extract + * information from the running kernel that would otherwise be + * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. + * + * LSM authors should note that the semantics of any given lockdown + * reason are not guaranteed to be stable - the same reason may block + * one set of features in one kernel release, and a slightly different + * set of features in a later kernel release. LSMs that seek to expose + * lockdown policy at any level of granularity other than "none", + * "integrity" or "confidentiality" are responsible for either + * ensuring that they expose a consistent level of functionality to + * userland, or ensuring that userland is aware that this is + * potentially a moving target. It is easy to misuse this information + * in a way that could break userspace. Please be careful not to do + * so. + * + * If you add to this, remember to extend lockdown_reasons in + * security/lockdown/lockdown.c. */ +enum lockdown_reason { + LOCKDOWN_NONE, + LOCKDOWN_MODULE_SIGNATURE, + LOCKDOWN_DEV_MEM, + LOCKDOWN_EFI_TEST, + LOCKDOWN_KEXEC, + LOCKDOWN_HIBERNATION, + LOCKDOWN_PCI_ACCESS, + LOCKDOWN_IOPORT, + LOCKDOWN_MSR, + LOCKDOWN_ACPI_TABLES, + LOCKDOWN_DEVICE_TREE, + LOCKDOWN_PCMCIA_CIS, + LOCKDOWN_TIOCSSERIAL, + LOCKDOWN_MODULE_PARAMETERS, + LOCKDOWN_MMIOTRACE, + LOCKDOWN_DEBUGFS, + LOCKDOWN_XMON_WR, + LOCKDOWN_BPF_WRITE_USER, + LOCKDOWN_DBG_WRITE_KERNEL, + LOCKDOWN_RTAS_ERROR_INJECTION, + LOCKDOWN_INTEGRITY_MAX, + LOCKDOWN_KCORE, + LOCKDOWN_KPROBES, + LOCKDOWN_BPF_READ_KERNEL, + LOCKDOWN_DBG_READ_KERNEL, + LOCKDOWN_PERF, + LOCKDOWN_TRACEFS, + LOCKDOWN_XMON_RW, + LOCKDOWN_XFRM_SECRET, + LOCKDOWN_CONFIDENTIALITY_MAX, +}; + +/* + * Data exported by the security modules + */ +struct lsm_prop { + struct lsm_prop_selinux selinux; + struct lsm_prop_smack smack; + struct lsm_prop_apparmor apparmor; + struct lsm_prop_bpf bpf; +}; + +extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; + +/* These functions are in security/commoncap.c */ extern int cap_capable(const struct cred *cred, struct user_namespace *ns, - int cap, int audit); -extern int cap_settime(const struct timespec *ts, const struct timezone *tz); + int cap, unsigned int opts); +extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); extern int cap_ptrace_access_check(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_capget(const struct task_struct *target, kernel_cap_t *effective, + kernel_cap_t *inheritable, kernel_cap_t *permitted); extern int cap_capset(struct cred *new, const struct cred *old, const kernel_cap_t *effective, const kernel_cap_t *inheritable, const kernel_cap_t *permitted); -extern int cap_bprm_set_creds(struct linux_binprm *bprm); -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_bprm_creds_from_file(struct linux_binprm *bprm, const struct file *file); +int cap_inode_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags); +int cap_inode_removexattr(struct mnt_idmap *idmap, + struct dentry *dentry, const char *name); +int cap_inode_need_killpriv(struct dentry *dentry); +int cap_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry); +int cap_inode_getsecurity(struct mnt_idmap *idmap, + struct inode *inode, const char *name, void **buffer, + bool alloc); extern int cap_mmap_addr(unsigned long addr); -extern int cap_mmap_file(struct file *file, unsigned long reqprot, - unsigned long prot, unsigned long flags); extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5); @@ -106,17 +205,14 @@ struct sk_buff; struct sock; struct sockaddr; struct socket; -struct flowi; +struct flowi_common; 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); - -void reset_security_ops(void); +struct sctp_association; #ifdef CONFIG_MMU extern unsigned long mmap_min_addr; @@ -127,6 +223,18 @@ extern unsigned long dac_mmap_min_addr; #endif /* + * A "security context" is the text representation of + * the information used by LSMs. + * This structure contains the string, its length, and which LSM + * it is useful for. + */ +struct lsm_context { + char *context; /* Provided by the module */ + u32 len; + int id; /* Identifies the module */ +}; + +/* * Values used in the task_security_ops calls */ /* setuid or setgid, id0 == uid or gid */ @@ -141,6 +249,10 @@ extern unsigned long dac_mmap_min_addr; /* setfsuid or setfsgid, id0 == fsuid or fsgid */ #define LSM_SETID_FS 8 +/* Flags for security_task_prlimit(). */ +#define LSM_PRLIMIT_READ 1 +#define LSM_PRLIMIT_WRITE 2 + /* forward declares to avoid warnings */ struct sched_param; struct request_sock; @@ -148,1579 +260,84 @@ struct request_sock; /* bprm->unsafe reasons */ #define LSM_UNSAFE_SHARE 1 #define LSM_UNSAFE_PTRACE 2 -#define LSM_UNSAFE_PTRACE_CAP 4 -#define LSM_UNSAFE_NO_NEW_PRIVS 8 +#define LSM_UNSAFE_NO_NEW_PRIVS 4 #ifdef CONFIG_MMU -extern int mmap_min_addr_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); +extern int mmap_min_addr_handler(const struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); #endif /* security_inode_init_security callback function to write xattrs */ typedef int (*initxattrs) (struct inode *inode, const struct xattr *xattr_array, void *fs_data); -#ifdef CONFIG_SECURITY -struct security_mnt_opts { - char **mnt_opts; - int *mnt_opts_flags; - int num_mnt_opts; +/* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ +#define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, +#define __data_id_stringify(dummy, str) #str, + +enum kernel_load_data_id { + __kernel_read_file_id(__data_id_enumify) }; -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 const char * const kernel_load_data_str[] = { + __kernel_read_file_id(__data_id_stringify) +}; -static inline void security_free_mnt_opts(struct security_mnt_opts *opts) +static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) { - 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; + if ((unsigned)id >= LOADING_MAX_ID) + return kernel_load_data_str[LOADING_UNKNOWN]; + + return kernel_load_data_str[id]; } /** - * struct security_operations - main security structure - * - * Security module identifier. - * - * @name: - * A string that acts as a unique identifier for the LSM with max number - * of characters = SECURITY_NAME_MAX. - * - * Security hooks for program execution operations. - * - * @bprm_set_creds: - * Save security information in the bprm->security field, typically based - * on information about the bprm->file, for later use by the apply_creds - * hook. This hook may also optionally check permissions (e.g. for - * transitions between security domains). - * This hook may be called multiple times during a single execve, e.g. for - * interpreters. The hook can tell whether it has already been called by - * checking to see if @bprm->security is non-NULL. If so, then the hook - * may decide either to retain the security information saved earlier or - * to replace it. - * @bprm contains the linux_binprm structure. - * Return 0 if the hook is successful and permission is granted. - * @bprm_check_security: - * This hook mediates the point when a search for a binary handler will - * begin. It allows a check the @bprm->security value which is set in the - * preceding set_creds call. The primary difference from set_creds is - * that the argv list and envp list are reliably available in @bprm. This - * hook may be called multiple times during a single execve; and in each - * pass set_creds is called first. - * @bprm contains the linux_binprm structure. - * Return 0 if the hook is successful and permission is granted. - * @bprm_committing_creds: - * Prepare to install the new security attributes of a process being - * transformed by an execve operation, based on the old credentials - * pointed to by @current->cred and the information set in @bprm->cred by - * the bprm_set_creds hook. @bprm points to the linux_binprm structure. - * This hook is a good place to perform state changes on the process such - * as closing open file descriptors to which access will no longer be - * granted when the attributes are changed. This is called immediately - * before commit_creds(). - * @bprm_committed_creds: - * Tidy up after the installation of the new security attributes of a - * process being transformed by an execve operation. The new credentials - * have, by this point, been set to @current->cred. @bprm points to the - * linux_binprm structure. This hook is a good place to perform state - * changes on the process such as clearing out non-inheritable signal - * state. This is called immediately after commit_creds(). - * @bprm_secureexec: - * Return a boolean value (0 or 1) indicating whether a "secure exec" - * is required. The flag is passed in the auxiliary table - * on the initial stack to the ELF interpreter to indicate whether libc - * should enable secure mode. - * @bprm contains the linux_binprm structure. - * - * Security hooks for filesystem operations. - * - * @sb_alloc_security: - * Allocate and attach a security structure to the sb->s_security field. - * The s_security field is initialized to NULL when the structure is - * allocated. - * @sb contains the super_block structure to be modified. - * Return 0 if operation was successful. - * @sb_free_security: - * Deallocate and clear the sb->s_security field. - * @sb contains the super_block structure to be modified. - * @sb_statfs: - * Check permission before obtaining filesystem statistics for the @mnt - * mountpoint. - * @dentry is a handle on the superblock for the filesystem. - * Return 0 if permission is granted. - * @sb_mount: - * Check permission before an object specified by @dev_name is mounted on - * the mount point named by @nd. For an ordinary mount, @dev_name - * identifies a device if the file system type requires a device. For a - * remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a - * loopback/bind mount (@flags & MS_BIND), @dev_name identifies the - * pathname of the object being mounted. - * @dev_name contains the name for object being mounted. - * @path contains the path for mount point object. - * @type contains the filesystem type. - * @flags contains the mount flags. - * @data contains the filesystem-specific data. - * Return 0 if permission is granted. - * @sb_copy_data: - * Allow mount option data to be copied prior to parsing by the filesystem, - * so that the security module can extract security-specific mount - * options cleanly (a filesystem may modify the data e.g. with strsep()). - * This also allows the original mount data to be stripped of security- - * specific options to avoid having to make filesystems aware of them. - * @type the type of filesystem being mounted. - * @orig the original mount data copied from userspace. - * @copy copied data which will be passed to the security module. - * Returns 0 if the copy was successful. - * @sb_remount: - * Extracts security system specific mount options and verifies no changes - * are being made to those options. - * @sb superblock being remounted - * @data contains the filesystem-specific data. - * Return 0 if permission is granted. - * @sb_umount: - * Check permission before the @mnt file system is unmounted. - * @mnt contains the mounted file system. - * @flags contains the unmount flags, e.g. MNT_FORCE. - * Return 0 if permission is granted. - * @sb_pivotroot: - * Check permission before pivoting the root filesystem. - * @old_path contains the path for the new location of the current root (put_old). - * @new_path contains the path for the new root (new_root). - * Return 0 if permission is granted. - * @sb_set_mnt_opts: - * Set the security relevant mount options used for a superblock - * @sb the superblock to set security mount options for - * @opts binary data structure containing all lsm mount data - * @sb_clone_mnt_opts: - * Copy all security options from a given superblock to another - * @oldsb old superblock which contain information to clone - * @newsb new superblock which needs filled in - * @sb_parse_opts_str: - * Parse a string of security data filling in the opts structure - * @options string containing all mount options known by the LSM - * @opts binary data structure usable by the LSM - * @dentry_init_security: - * Compute a context for a dentry as the inode is not yet available - * since NFSv4 has no label backed by an EA anyway. - * @dentry dentry to use in calculating the context. - * @mode mode used to determine resource type. - * @name name of the last path component used to create file - * @ctx pointer to place the pointer to the resulting context in. - * @ctxlen point to place the length of the resulting context. - * - * - * Security hooks for inode operations. - * - * @inode_alloc_security: - * Allocate and attach a security structure to @inode->i_security. The - * i_security field is initialized to NULL when the inode structure is - * allocated. - * @inode contains the inode structure. - * Return 0 if operation was successful. - * @inode_free_security: - * @inode contains the inode structure. - * Deallocate the inode security structure and set @inode->i_security to - * NULL. - * @inode_init_security: - * Obtain the security attribute name suffix and value to set on a newly - * created inode and set up the incore security field for the new inode. - * This hook is called by the fs code as part of the inode creation - * transaction and provides for atomic labeling of the inode, unlike - * the post_create/mkdir/... hooks called by the VFS. The hook function - * is expected to allocate the name and value via kmalloc, with the caller - * being responsible for calling kfree after using them. - * If the security module does not use security attributes or does - * not wish to put a security attribute on this particular inode, - * then it should return -EOPNOTSUPP to skip this processing. - * @inode contains the inode structure of the newly created inode. - * @dir contains the inode structure of the parent directory. - * @qstr contains the last path component of the new object - * @name will be set to the allocated name suffix (e.g. selinux). - * @value will be set to the allocated attribute value. - * @len will be set to the length of the value. - * Returns 0 if @name and @value have been successfully set, - * -EOPNOTSUPP if no security attribute is needed, or - * -ENOMEM on memory allocation failure. - * @inode_create: - * Check permission to create a regular file. - * @dir contains inode structure of the parent of the new file. - * @dentry contains the dentry structure for the file to be created. - * @mode contains the file mode of the file to be created. - * Return 0 if permission is granted. - * @inode_link: - * Check permission before creating a new hard link to a file. - * @old_dentry contains the dentry structure for an existing link to the file. - * @dir contains the inode structure of the parent directory of the new link. - * @new_dentry contains the dentry structure for the new link. - * Return 0 if permission is granted. - * @path_link: - * Check permission before creating a new hard link to a file. - * @old_dentry contains the dentry structure for an existing link - * to the file. - * @new_dir contains the path structure of the parent directory of - * the new link. - * @new_dentry contains the dentry structure for the new link. - * Return 0 if permission is granted. - * @inode_unlink: - * Check the permission to remove a hard link to a file. - * @dir contains the inode structure of parent directory of the file. - * @dentry contains the dentry structure for file to be unlinked. - * Return 0 if permission is granted. - * @path_unlink: - * Check the permission to remove a hard link to a file. - * @dir contains the path structure of parent directory of the file. - * @dentry contains the dentry structure for file to be unlinked. - * Return 0 if permission is granted. - * @inode_symlink: - * Check the permission to create a symbolic link to a file. - * @dir contains the inode structure of parent directory of the symbolic link. - * @dentry contains the dentry structure of the symbolic link. - * @old_name contains the pathname of file. - * Return 0 if permission is granted. - * @path_symlink: - * Check the permission to create a symbolic link to a file. - * @dir contains the path structure of parent directory of - * the symbolic link. - * @dentry contains the dentry structure of the symbolic link. - * @old_name contains the pathname of file. - * Return 0 if permission is granted. - * @inode_mkdir: - * Check permissions to create a new directory in the existing directory - * associated with inode structure @dir. - * @dir contains the inode structure of parent of the directory to be created. - * @dentry contains the dentry structure of new directory. - * @mode contains the mode of new directory. - * Return 0 if permission is granted. - * @path_mkdir: - * Check permissions to create a new directory in the existing directory - * associated with path structure @path. - * @dir contains the path structure of parent of the directory - * to be created. - * @dentry contains the dentry structure of new directory. - * @mode contains the mode of new directory. - * Return 0 if permission is granted. - * @inode_rmdir: - * Check the permission to remove a directory. - * @dir contains the inode structure of parent of the directory to be removed. - * @dentry contains the dentry structure of directory to be removed. - * Return 0 if permission is granted. - * @path_rmdir: - * Check the permission to remove a directory. - * @dir contains the path structure of parent of the directory to be - * removed. - * @dentry contains the dentry structure of directory to be removed. - * Return 0 if permission is granted. - * @inode_mknod: - * Check permissions when creating a special file (or a socket or a fifo - * file created via the mknod system call). Note that if mknod operation - * is being done for a regular file, then the create hook will be called - * and not this hook. - * @dir contains the inode structure of parent of the new file. - * @dentry contains the dentry structure of the new file. - * @mode contains the mode of the new file. - * @dev contains the device number. - * Return 0 if permission is granted. - * @path_mknod: - * Check permissions when creating a file. Note that this hook is called - * even if mknod operation is being done for a regular file. - * @dir contains the path structure of parent of the new file. - * @dentry contains the dentry structure of the new file. - * @mode contains the mode of the new file. - * @dev contains the undecoded device number. Use new_decode_dev() to get - * the decoded device number. - * Return 0 if permission is granted. - * @inode_rename: - * Check for permission to rename a file or directory. - * @old_dir contains the inode structure for parent of the old link. - * @old_dentry contains the dentry structure of the old link. - * @new_dir contains the inode structure for parent of the new link. - * @new_dentry contains the dentry structure of the new link. - * Return 0 if permission is granted. - * @path_rename: - * Check for permission to rename a file or directory. - * @old_dir contains the path structure for parent of the old link. - * @old_dentry contains the dentry structure of the old link. - * @new_dir contains the path structure for parent of the new link. - * @new_dentry contains the dentry structure of the new link. - * Return 0 if permission is granted. - * @path_chmod: - * Check for permission to change DAC's permission of a file or directory. - * @dentry contains the dentry structure. - * @mnt contains the vfsmnt structure. - * @mode contains DAC's mode. - * Return 0 if permission is granted. - * @path_chown: - * Check for permission to change owner/group of a file or directory. - * @path contains the path structure. - * @uid contains new owner's ID. - * @gid contains new group's ID. - * Return 0 if permission is granted. - * @path_chroot: - * Check for permission to change root directory. - * @path contains the path structure. - * Return 0 if permission is granted. - * @inode_readlink: - * Check the permission to read the symbolic link. - * @dentry contains the dentry structure for the file link. - * Return 0 if permission is granted. - * @inode_follow_link: - * Check permission to follow a symbolic link when looking up a pathname. - * @dentry contains the dentry structure for the link. - * @nd contains the nameidata structure for the parent directory. - * Return 0 if permission is granted. - * @inode_permission: - * Check permission before accessing an inode. This hook is called by the - * existing Linux permission function, so a security module can use it to - * provide additional checking for existing Linux permission checks. - * Notice that this hook is called when a file is opened (as well as many - * other operations), whereas the file_security_ops permission hook is - * called when the actual read/write operations are performed. - * @inode contains the inode structure to check. - * @mask contains the permission mask. - * Return 0 if permission is granted. - * @inode_setattr: - * Check permission before setting file attributes. Note that the kernel - * call to notify_change is performed from several locations, whenever - * file attributes change (such as when a file is truncated, chown/chmod - * operations, transferring disk quotas, etc). - * @dentry contains the dentry structure for the file. - * @attr is the iattr structure containing the new file attributes. - * Return 0 if permission is granted. - * @path_truncate: - * Check permission before truncating a file. - * @path contains the path structure for the file. - * Return 0 if permission is granted. - * @inode_getattr: - * Check permission before obtaining file attributes. - * @mnt is the vfsmount where the dentry was looked up - * @dentry contains the dentry structure for the file. - * Return 0 if permission is granted. - * @inode_setxattr: - * Check permission before setting the extended attributes - * @value identified by @name for @dentry. - * Return 0 if permission is granted. - * @inode_post_setxattr: - * Update inode security field after successful setxattr operation. - * @value identified by @name for @dentry. - * @inode_getxattr: - * Check permission before obtaining the extended attributes - * identified by @name for @dentry. - * Return 0 if permission is granted. - * @inode_listxattr: - * Check permission before obtaining the list of extended attribute - * names for @dentry. - * Return 0 if permission is granted. - * @inode_removexattr: - * Check permission before removing the extended attribute - * identified by @name for @dentry. - * Return 0 if permission is granted. - * @inode_getsecurity: - * Retrieve a copy of the extended attribute representation of the - * security label associated with @name for @inode via @buffer. Note that - * @name is the remainder of the attribute name after the security prefix - * has been removed. @alloc is used to specify of the call should return a - * value via the buffer or just the value length Return size of buffer on - * success. - * @inode_setsecurity: - * Set the security label associated with @name for @inode from the - * extended attribute value @value. @size indicates the size of the - * @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0. - * Note that @name is the remainder of the attribute name after the - * security. prefix has been removed. - * Return 0 on success. - * @inode_listsecurity: - * Copy the extended attribute names for the security labels - * associated with @inode into @buffer. The maximum size of @buffer - * is specified by @buffer_size. @buffer may be NULL to request - * the size of the buffer required. - * Returns number of bytes used/required on success. - * @inode_need_killpriv: - * Called when an inode has been changed. - * @dentry is the dentry being changed. - * Return <0 on error to abort the inode change operation. - * Return 0 if inode_killpriv does not need to be called. - * Return >0 if inode_killpriv does need to be called. - * @inode_killpriv: - * The setuid bit is being removed. Remove similar security labels. - * Called with the dentry->d_inode->i_mutex held. - * @dentry is the dentry being changed. - * Return 0 on success. If error is returned, then the operation - * causing setuid bit removal is failed. - * @inode_getsecid: - * Get the secid associated with the node. - * @inode contains a pointer to the inode. - * @secid contains a pointer to the location where result will be saved. - * In case of failure, @secid will be set to zero. - * - * Security hooks for file operations - * - * @file_permission: - * Check file permissions before accessing an open file. This hook is - * called by various operations that read or write files. A security - * module can use this hook to perform additional checking on these - * operations, e.g. to revalidate permissions on use to support privilege - * bracketing or policy changes. Notice that this hook is used when the - * actual read/write operations are performed, whereas the - * inode_security_ops hook is called when a file is opened (as well as - * many other operations). - * Caveat: Although this hook can be used to revalidate permissions for - * various system call operations that read or write files, it does not - * address the revalidation of permissions for memory-mapped files. - * Security modules must handle this separately if they need such - * revalidation. - * @file contains the file structure being accessed. - * @mask contains the requested permissions. - * Return 0 if permission is granted. - * @file_alloc_security: - * Allocate and attach a security structure to the file->f_security field. - * The security field is initialized to NULL when the structure is first - * created. - * @file contains the file structure to secure. - * Return 0 if the hook is successful and permission is granted. - * @file_free_security: - * Deallocate and free any security structures stored in file->f_security. - * @file contains the file structure being modified. - * @file_ioctl: - * @file contains the file structure. - * @cmd contains the operation to perform. - * @arg contains the operational arguments. - * Check permission for an ioctl operation on @file. Note that @arg - * sometimes represents a user space pointer; in other cases, it may be a - * simple integer value. When @arg represents a user space pointer, it - * should never be used by the security module. - * Return 0 if permission is granted. - * @mmap_addr : - * Check permissions for a mmap operation at @addr. - * @addr contains virtual address that will be used for the operation. - * Return 0 if permission is granted. - * @mmap_file : - * Check permissions for a mmap operation. The @file may be NULL, e.g. - * if mapping anonymous memory. - * @file contains the file structure for file to map (may be NULL). - * @reqprot contains the protection requested by the application. - * @prot contains the protection that will be applied by the kernel. - * @flags contains the operational flags. - * Return 0 if permission is granted. - * @file_mprotect: - * Check permissions before changing memory access permissions. - * @vma contains the memory region to modify. - * @reqprot contains the protection requested by the application. - * @prot contains the protection that will be applied by the kernel. - * Return 0 if permission is granted. - * @file_lock: - * Check permission before performing file locking operations. - * Note: this hook mediates both flock and fcntl style locks. - * @file contains the file structure. - * @cmd contains the posix-translated lock operation to perform - * (e.g. F_RDLCK, F_WRLCK). - * Return 0 if permission is granted. - * @file_fcntl: - * Check permission before allowing the file operation specified by @cmd - * from being performed on the file @file. Note that @arg sometimes - * represents a user space pointer; in other cases, it may be a simple - * integer value. When @arg represents a user space pointer, it should - * never be used by the security module. - * @file contains the file structure. - * @cmd contains the operation to be performed. - * @arg contains the operational arguments. - * Return 0 if permission is granted. - * @file_set_fowner: - * Save owner security information (typically from current->security) in - * file->f_security for later use by the send_sigiotask hook. - * @file contains the file structure to update. - * Return 0 on success. - * @file_send_sigiotask: - * Check permission for the file owner @fown to send SIGIO or SIGURG to the - * process @tsk. Note that this hook is sometimes called from interrupt. - * Note that the fown_struct, @fown, is never outside the context of a - * struct file, so the file structure (and associated security information) - * can always be obtained: - * container_of(fown, struct file, f_owner) - * @tsk contains the structure of task receiving signal. - * @fown contains the file owner information. - * @sig is the signal that will be sent. When 0, kernel sends SIGIO. - * Return 0 if permission is granted. - * @file_receive: - * This hook allows security modules to control the ability of a process - * to receive an open file descriptor via socket IPC. - * @file contains the file structure being received. - * Return 0 if permission is granted. - * @file_open - * Save open-time permission checking state for later use upon - * file_permission, and recheck access if anything has changed - * since inode_permission. - * - * Security hooks for task operations. - * - * @task_create: - * Check permission before creating a child process. See the clone(2) - * manual page for definitions of the @clone_flags. - * @clone_flags contains the flags indicating what should be shared. - * Return 0 if permission is granted. - * @task_free: - * @task task being freed - * Handle release of task-related resources. (Note that this can be called - * from interrupt context.) - * @cred_alloc_blank: - * @cred points to the credentials. - * @gfp indicates the atomicity of any memory allocations. - * Only allocate sufficient memory and attach to @cred such that - * cred_transfer() will not get ENOMEM. - * @cred_free: - * @cred points to the credentials. - * Deallocate and clear the cred->security field in a set of credentials. - * @cred_prepare: - * @new points to the new credentials. - * @old points to the original credentials. - * @gfp indicates the atomicity of any memory allocations. - * Prepare a new set of credentials by copying the data from the old set. - * @cred_transfer: - * @new points to the new credentials. - * @old points to the original credentials. - * Transfer data from original creds to new creds - * @kernel_act_as: - * Set the credentials for a kernel service to act as (subjective context). - * @new points to the credentials to be modified. - * @secid specifies the security ID to be set - * The current task must be the one that nominated @secid. - * Return 0 if successful. - * @kernel_create_files_as: - * Set the file creation context in a set of credentials to be the same as - * the objective context of the specified inode. - * @new points to the credentials to be modified. - * @inode points to the inode to use as a reference. - * The current task must be the one that nominated @inode. - * Return 0 if successful. - * @kernel_module_request: - * Ability to trigger the kernel to automatically upcall to userspace for - * userspace to load a kernel module with the given name. - * @kmod_name name of the module requested by the kernel - * Return 0 if successful. - * @kernel_module_from_file: - * Load a kernel module from userspace. - * @file contains the file structure pointing to the file containing - * the kernel module to load. If the module is being loaded from a blob, - * this argument will be NULL. - * Return 0 if permission is granted. - * @task_fix_setuid: - * Update the module's state after setting one or more of the user - * identity attributes of the current process. The @flags parameter - * indicates which of the set*uid system calls invoked this hook. If - * @new is the set of credentials that will be installed. Modifications - * should be made to this rather than to @current->cred. - * @old is the set of credentials that are being replaces - * @flags contains one of the LSM_SETID_* values. - * Return 0 on success. - * @task_setpgid: - * Check permission before setting the process group identifier of the - * process @p to @pgid. - * @p contains the task_struct for process being modified. - * @pgid contains the new pgid. - * Return 0 if permission is granted. - * @task_getpgid: - * Check permission before getting the process group identifier of the - * process @p. - * @p contains the task_struct for the process. - * Return 0 if permission is granted. - * @task_getsid: - * Check permission before getting the session identifier of the process - * @p. - * @p contains the task_struct for the process. - * Return 0 if permission is granted. - * @task_getsecid: - * Retrieve the security identifier of the process @p. - * @p contains the task_struct for the process and place is into @secid. - * In case of failure, @secid will be set to zero. - * - * @task_setnice: - * Check permission before setting the nice value of @p to @nice. - * @p contains the task_struct of process. - * @nice contains the new nice value. - * Return 0 if permission is granted. - * @task_setioprio - * Check permission before setting the ioprio value of @p to @ioprio. - * @p contains the task_struct of process. - * @ioprio contains the new ioprio value - * Return 0 if permission is granted. - * @task_getioprio - * Check permission before getting the ioprio value of @p. - * @p contains the task_struct of process. - * Return 0 if permission is granted. - * @task_setrlimit: - * Check permission before setting the resource limits of the current - * process for @resource to @new_rlim. The old resource limit values can - * be examined by dereferencing (current->signal->rlim + resource). - * @resource contains the resource whose limit is being set. - * @new_rlim contains the new limits for @resource. - * Return 0 if permission is granted. - * @task_setscheduler: - * Check permission before setting scheduling policy and/or parameters of - * process @p based on @policy and @lp. - * @p contains the task_struct for process. - * @policy contains the scheduling policy. - * @lp contains the scheduling parameters. - * Return 0 if permission is granted. - * @task_getscheduler: - * Check permission before obtaining scheduling information for process - * @p. - * @p contains the task_struct for process. - * Return 0 if permission is granted. - * @task_movememory - * Check permission before moving memory owned by process @p. - * @p contains the task_struct for process. - * Return 0 if permission is granted. - * @task_kill: - * Check permission before sending signal @sig to @p. @info can be NULL, - * the constant 1, or a pointer to a siginfo structure. If @info is 1 or - * SI_FROMKERNEL(info) is true, then the signal should be viewed as coming - * from the kernel and should typically be permitted. - * SIGIO signals are handled separately by the send_sigiotask hook in - * file_security_ops. - * @p contains the task_struct for process. - * @info contains the signal information. - * @sig contains the signal value. - * @secid contains the sid of the process where the signal originated - * Return 0 if permission is granted. - * @task_wait: - * Check permission before allowing a process to reap a child process @p - * and collect its status information. - * @p contains the task_struct for process. - * Return 0 if permission is granted. - * @task_prctl: - * Check permission before performing a process control operation on the - * current process. - * @option contains the operation. - * @arg2 contains a argument. - * @arg3 contains a argument. - * @arg4 contains a argument. - * @arg5 contains a argument. - * Return -ENOSYS if no-one wanted to handle this op, any other value to - * cause prctl() to return immediately with that value. - * @task_to_inode: - * Set the security attributes for an inode based on an associated task's - * security attributes, e.g. for /proc/pid inodes. - * @p contains the task_struct for the task. - * @inode contains the inode structure for the inode. - * - * Security hooks for Netlink messaging. - * - * @netlink_send: - * Save security information for a netlink message so that permission - * checking can be performed when the message is processed. The security - * information can be saved using the eff_cap field of the - * netlink_skb_parms structure. Also may be used to provide fine - * grained control over message transmission. - * @sk associated sock of task sending the message. - * @skb contains the sk_buff structure for the netlink message. - * Return 0 if the information was successfully saved and message - * is allowed to be transmitted. - * - * Security hooks for Unix domain networking. - * - * @unix_stream_connect: - * Check permissions before establishing a Unix domain stream connection - * between @sock and @other. - * @sock contains the sock structure. - * @other contains the peer sock structure. - * @newsk contains the new sock structure. - * Return 0 if permission is granted. - * @unix_may_send: - * Check permissions before connecting or sending datagrams from @sock to - * @other. - * @sock contains the socket structure. - * @other contains the peer socket structure. - * Return 0 if permission is granted. - * - * The @unix_stream_connect and @unix_may_send hooks were necessary because - * Linux provides an alternative to the conventional file name space for Unix - * domain sockets. Whereas binding and connecting to sockets in the file name - * space is mediated by the typical file permissions (and caught by the mknod - * and permission hooks in inode_security_ops), binding and connecting to - * sockets in the abstract name space is completely unmediated. Sufficient - * control of Unix domain sockets in the abstract name space isn't possible - * using only the socket layer hooks, since we need to know the actual target - * socket, which is not looked up until we are inside the af_unix code. - * - * Security hooks for socket operations. - * - * @socket_create: - * Check permissions prior to creating a new socket. - * @family contains the requested protocol family. - * @type contains the requested communications type. - * @protocol contains the requested protocol. - * @kern set to 1 if a kernel socket. - * Return 0 if permission is granted. - * @socket_post_create: - * This hook allows a module to update or allocate a per-socket security - * structure. Note that the security field was not added directly to the - * socket structure, but rather, the socket security information is stored - * in the associated inode. Typically, the inode alloc_security hook will - * allocate and and attach security information to - * sock->inode->i_security. This hook may be used to update the - * sock->inode->i_security field with additional information that wasn't - * available when the inode was allocated. - * @sock contains the newly created socket structure. - * @family contains the requested protocol family. - * @type contains the requested communications type. - * @protocol contains the requested protocol. - * @kern set to 1 if a kernel socket. - * @socket_bind: - * Check permission before socket protocol layer bind operation is - * performed and the socket @sock is bound to the address specified in the - * @address parameter. - * @sock contains the socket structure. - * @address contains the address to bind to. - * @addrlen contains the length of address. - * Return 0 if permission is granted. - * @socket_connect: - * Check permission before socket protocol layer connect operation - * attempts to connect socket @sock to a remote address, @address. - * @sock contains the socket structure. - * @address contains the address of remote endpoint. - * @addrlen contains the length of address. - * Return 0 if permission is granted. - * @socket_listen: - * Check permission before socket protocol layer listen operation. - * @sock contains the socket structure. - * @backlog contains the maximum length for the pending connection queue. - * Return 0 if permission is granted. - * @socket_accept: - * Check permission before accepting a new connection. Note that the new - * socket, @newsock, has been created and some information copied to it, - * but the accept operation has not actually been performed. - * @sock contains the listening socket structure. - * @newsock contains the newly created server socket for connection. - * Return 0 if permission is granted. - * @socket_sendmsg: - * Check permission before transmitting a message to another socket. - * @sock contains the socket structure. - * @msg contains the message to be transmitted. - * @size contains the size of message. - * Return 0 if permission is granted. - * @socket_recvmsg: - * Check permission before receiving a message from a socket. - * @sock contains the socket structure. - * @msg contains the message structure. - * @size contains the size of message structure. - * @flags contains the operational flags. - * Return 0 if permission is granted. - * @socket_getsockname: - * Check permission before the local address (name) of the socket object - * @sock is retrieved. - * @sock contains the socket structure. - * Return 0 if permission is granted. - * @socket_getpeername: - * Check permission before the remote address (name) of a socket object - * @sock is retrieved. - * @sock contains the socket structure. - * Return 0 if permission is granted. - * @socket_getsockopt: - * Check permissions before retrieving the options associated with socket - * @sock. - * @sock contains the socket structure. - * @level contains the protocol level to retrieve option from. - * @optname contains the name of option to retrieve. - * Return 0 if permission is granted. - * @socket_setsockopt: - * Check permissions before setting the options associated with socket - * @sock. - * @sock contains the socket structure. - * @level contains the protocol level to set options for. - * @optname contains the name of the option to set. - * Return 0 if permission is granted. - * @socket_shutdown: - * Checks permission before all or part of a connection on the socket - * @sock is shut down. - * @sock contains the socket structure. - * @how contains the flag indicating how future sends and receives are handled. - * Return 0 if permission is granted. - * @socket_sock_rcv_skb: - * Check permissions on incoming network packets. This hook is distinct - * from Netfilter's IP input hooks since it is the first time that the - * incoming sk_buff @skb has been associated with a particular socket, @sk. - * Must not sleep inside this hook because some callers hold spinlocks. - * @sk contains the sock (not socket) associated with the incoming sk_buff. - * @skb contains the incoming network data. - * @socket_getpeersec_stream: - * This hook allows the security module to provide peer socket security - * state for unix or connected tcp sockets to userspace via getsockopt - * SO_GETPEERSEC. For tcp sockets this can be meaningful if the - * socket is associated with an ipsec SA. - * @sock is the local socket. - * @optval userspace memory where the security state is to be copied. - * @optlen userspace int where the module should copy the actual length - * of the security state. - * @len as input is the maximum length to copy to userspace provided - * by the caller. - * Return 0 if all is well, otherwise, typical getsockopt return - * values. - * @socket_getpeersec_dgram: - * This hook allows the security module to provide peer socket security - * state for udp sockets on a per-packet basis to userspace via - * getsockopt SO_GETPEERSEC. The application must first have indicated - * the IP_PASSSEC option via getsockopt. It can then retrieve the - * security state returned by this hook for a packet via the SCM_SECURITY - * ancillary message type. - * @skb is the skbuff for the packet being queried - * @secdata is a pointer to a buffer in which to copy the security data - * @seclen is the maximum length for @secdata - * Return 0 on success, error on failure. - * @sk_alloc_security: - * Allocate and attach a security structure to the sk->sk_security field, - * which is used to copy security attributes between local stream sockets. - * @sk_free_security: - * Deallocate security structure. - * @sk_clone_security: - * Clone/copy security structure. - * @sk_getsecid: - * Retrieve the LSM-specific secid for the sock to enable caching of network - * authorizations. - * @sock_graft: - * Sets the socket's isec sid to the sock's sid. - * @inet_conn_request: - * Sets the openreq's sid to socket's sid with MLS portion taken from peer sid. - * @inet_csk_clone: - * Sets the new child socket's sid to the openreq sid. - * @inet_conn_established: - * Sets the connection's peersid to the secmark on skb. - * @secmark_relabel_packet: - * check if the process should be allowed to relabel packets to the given secid - * @security_secmark_refcount_inc - * tells the LSM to increment the number of secmark labeling rules loaded - * @security_secmark_refcount_dec - * tells the LSM to decrement the number of secmark labeling rules loaded - * @req_classify_flow: - * Sets the flow's sid to the openreq sid. - * @tun_dev_alloc_security: - * This hook allows a module to allocate a security structure for a TUN - * device. - * @security pointer to a security structure pointer. - * Returns a zero on success, negative values on failure. - * @tun_dev_free_security: - * This hook allows a module to free the security structure for a TUN - * device. - * @security pointer to the TUN device's security structure - * @tun_dev_create: - * Check permissions prior to creating a new TUN device. - * @tun_dev_attach_queue: - * Check permissions prior to attaching to a TUN device queue. - * @security pointer to the TUN device's security structure. - * @tun_dev_attach: - * This hook can be used by the module to update any security state - * associated with the TUN device's sock structure. - * @sk contains the existing sock structure. - * @security pointer to the TUN device's security structure. - * @tun_dev_open: - * This hook can be used by the module to update any security state - * associated with the TUN device's security structure. - * @security pointer to the TUN devices's security structure. - * @skb_owned_by: - * This hook sets the packet's owning sock. - * @skb is the packet. - * @sk the sock which owns the packet. - * - * Security hooks for XFRM operations. - * - * @xfrm_policy_alloc_security: - * @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy - * Database used by the XFRM system. - * @sec_ctx contains the security context information being provided by - * the user-level policy update program (e.g., setkey). - * Allocate a security structure to the xp->security field; the security - * field is initialized to NULL when the xfrm_policy is allocated. - * Return 0 if operation was successful (memory to allocate, legal context) - * @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). - * @cred points to the credentials to provide the context against which to - * evaluate the security data on the key. - * @perm describes the combination of permissions required of this key. - * Return 0 if permission is granted, -ve error otherwise. - * @key_getsecurity: - * Get a textual representation of the security context attached to a key - * for the purposes of honouring KEYCTL_GETSECURITY. This function - * allocates the storage for the NUL-terminated string and the caller - * should free it. - * @key points to the key to be queried. - * @_buffer points to a pointer that should be set to point to the - * resulting string (if no label or an error occurs). - * Return the length of the string (including terminating NUL) or -ve if - * an error. - * May also return 0 (and a NULL buffer pointer) if there is no label. - * - * Security hooks affecting all System V IPC operations. - * - * @ipc_permission: - * Check permissions for access to IPC - * @ipcp contains the kernel IPC permission structure - * @flag contains the desired (requested) permission set - * Return 0 if permission is granted. - * @ipc_getsecid: - * Get the secid associated with the ipc object. - * @ipcp contains the kernel IPC permission structure. - * @secid contains a pointer to the location where result will be saved. - * In case of failure, @secid will be set to zero. + * lsmprop_init - initialize a lsm_prop structure + * @prop: Pointer to the data to initialize * - * 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_access_check: - * Check permission before allowing the current process to trace the - * @child process. - * Security modules may also want to perform a process tracing check - * during an execve in the set_security or apply_creds hooks of - * tracing check during an execve in the bprm_set_creds hook of - * binprm_security_ops if the process is being traced and its security - * attributes would be changed by the execve. - * @child contains the task_struct structure for the target process. - * @mode contains the PTRACE_MODE flags indicating the form of access. - * Return 0 if permission is granted. - * @ptrace_traceme: - * Check that the @parent process has sufficient permission to trace the - * current process before allowing the current process to present itself - * to the @parent process for tracing. - * @parent contains the task_struct structure for debugger process. - * Return 0 if permission is granted. - * @capget: - * Get the @effective, @inheritable, and @permitted capability sets for - * the @target process. The hook may also perform permission checking to - * determine if the current process is allowed to see the capability sets - * of the @target process. - * @target contains the task_struct structure for target process. - * @effective contains the effective capability set. - * @inheritable contains the inheritable capability set. - * @permitted contains the permitted capability set. - * Return 0 if the capability sets were successfully obtained. - * @capset: - * Set the @effective, @inheritable, and @permitted capability sets for - * the current process. - * @new contains the new credentials structure for target process. - * @old contains the current credentials structure for target process. - * @effective contains the effective capability set. - * @inheritable contains the inheritable capability set. - * @permitted contains the permitted capability set. - * Return 0 and update @new if permission is granted. - * @capable: - * Check whether the @tsk process has the @cap capability in the indicated - * credentials. - * @cred contains the credentials to use. - * @ns contains the user namespace we want the capability in - * @cap contains the capability <include/linux/capability.h>. - * @audit: Whether to write an audit message or not - * Return 0 if the capability is granted for @tsk. - * @syslog: - * Check permission before accessing the kernel message ring or changing - * logging to the console. - * See the syslog(2) manual page for an explanation of the @type values. - * @type contains the type of action. - * @from_file indicates the context of action (if it came from /proc). - * Return 0 if permission is granted. - * @settime: - * Check permission to change the system time. - * struct timespec and timezone are defined in include/linux/time.h - * @ts contains new time - * @tz contains new timezone - * Return 0 if permission is granted. - * @vm_enough_memory: - * Check permissions for allocating a new virtual mapping. - * @mm contains the mm struct it is being added to. - * @pages contains the number of pages. - * Return 0 if permission is granted. - * - * @ismaclabel: - * Check if the extended attribute specified by @name - * represents a MAC label. Returns 1 if name is a MAC - * attribute otherwise returns 0. - * @name full extended attribute name to check against - * LSM as a MAC label. - * - * @secid_to_secctx: - * Convert secid to security context. If secdata is NULL the length of - * the result will be returned in seclen, but no secdata will be returned. - * This does mean that the length could change between calls to check the - * length and the next call which actually allocates and returns the secdata. - * @secid contains the security ID. - * @secdata contains the pointer that stores the converted security context. - * @seclen pointer which contains the length of the data - * @secctx_to_secid: - * Convert security context to secid. - * @secid contains the pointer to the generated security ID. - * @secdata contains the security context. - * - * @release_secctx: - * Release the security context. - * @secdata contains the security context. - * @seclen contains the length of the security context. - * - * Security hooks for Audit - * - * @audit_rule_init: - * Allocate and initialize an LSM audit rule structure. - * @field contains the required Audit action. Fields flags are defined in include/linux/audit.h - * @op contains the operator the rule uses. - * @rulestr contains the context where the rule will be applied to. - * @lsmrule contains a pointer to receive the result. - * Return 0 if @lsmrule has been successfully set, - * -EINVAL in case of an invalid rule. - * - * @audit_rule_known: - * Specifies whether given @rule contains any fields related to current LSM. - * @rule contains the audit rule of interest. - * Return 1 in case of relation found, 0 otherwise. - * - * @audit_rule_match: - * Determine if given @secid matches a rule previously approved - * by @audit_rule_known. - * @secid contains the security id in question. - * @field contains the field which relates to current LSM. - * @op contains the operator that will be used for matching. - * @rule points to the audit rule that will be checked against. - * @actx points to the audit context associated with the check. - * Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure. - * - * @audit_rule_free: - * Deallocate the LSM audit rule structure previously allocated by - * audit_rule_init. - * @rule contains the allocated rule - * - * @inode_notifysecctx: - * Notify the security module of what the security context of an inode - * should be. Initializes the incore security context managed by the - * security module for this inode. Example usage: NFS client invokes - * this hook to initialize the security context in its incore inode to the - * value provided by the server for the file when the server returned the - * file's attributes to the client. - * - * Must be called with inode->i_mutex locked. - * - * @inode we wish to set the security context of. - * @ctx contains the string which we wish to set in the inode. - * @ctxlen contains the length of @ctx. - * - * @inode_setsecctx: - * Change the security context of an inode. Updates the - * incore security context managed by the security module and invokes the - * fs code as needed (via __vfs_setxattr_noperm) to update any backing - * xattrs that represent the context. Example usage: NFS server invokes - * this hook to change the security context in its incore inode and on the - * backing filesystem to a value provided by the client on a SETATTR - * operation. - * - * Must be called with inode->i_mutex locked. - * - * @dentry contains the inode we wish to set the security context of. - * @ctx contains the string which we wish to set in the inode. - * @ctxlen contains the length of @ctx. - * - * @inode_getsecctx: - * On success, returns 0 and fills out @ctx and @ctxlen with the security - * context for the given @inode. - * - * @inode we wish to get the security context of. - * @ctx is a pointer in which to place the allocated security context. - * @ctxlen points to the place to put the length of @ctx. - * This is the main security structure. + * Set all secid for all modules to the specified value. */ -struct security_operations { - char name[SECURITY_NAME_MAX + 1]; - - 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, int audit); - 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 timespec *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); - int (*bprm_secureexec) (struct linux_binprm *bprm); - void (*bprm_committing_creds) (struct linux_binprm *bprm); - void (*bprm_committed_creds) (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_remount) (struct super_block *sb, void *data); - int (*sb_kern_mount) (struct super_block *sb, int flags, void *data); - 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, struct path *path, - const char *type, unsigned long flags, void *data); - int (*sb_umount) (struct vfsmount *mnt, int flags); - int (*sb_pivotroot) (struct path *old_path, - struct path *new_path); - int (*sb_set_mnt_opts) (struct super_block *sb, - struct security_mnt_opts *opts, - unsigned long kern_flags, - unsigned long *set_kern_flags); - int (*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 (*dentry_init_security) (struct dentry *dentry, int mode, - struct qstr *name, void **ctx, - u32 *ctxlen); - - -#ifdef CONFIG_SECURITY_PATH - int (*path_unlink) (struct path *dir, struct dentry *dentry); - int (*path_mkdir) (struct path *dir, struct dentry *dentry, umode_t mode); - int (*path_rmdir) (struct path *dir, struct dentry *dentry); - int (*path_mknod) (struct path *dir, struct dentry *dentry, umode_t mode, - unsigned int dev); - int (*path_truncate) (struct path *path); - int (*path_symlink) (struct path *dir, struct dentry *dentry, - const char *old_name); - int (*path_link) (struct dentry *old_dentry, struct path *new_dir, - struct dentry *new_dentry); - int (*path_rename) (struct path *old_dir, struct dentry *old_dentry, - struct path *new_dir, struct dentry *new_dentry); - int (*path_chmod) (struct path *path, umode_t mode); - int (*path_chown) (struct path *path, kuid_t uid, kgid_t gid); - int (*path_chroot) (struct path *path); -#endif - - 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, 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 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); - 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 (*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); - 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 (*file_open) (struct file *file, const struct cred *cred); - - int (*task_create) (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); - 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_module_from_file)(struct file *file); - 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_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 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); - 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); - - 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 (*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); - - 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); +static inline void lsmprop_init(struct lsm_prop *prop) +{ + memset(prop, 0, sizeof(*prop)); +} -#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_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); - void (*skb_owned_by) (struct sk_buff *skb, struct sock *sk); -#endif /* CONFIG_SECURITY_NETWORK */ +#ifdef CONFIG_SECURITY -#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, - const struct flowi *fl); - int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall); -#endif /* CONFIG_SECURITY_NETWORK_XFRM */ +/** + * lsmprop_is_set - report if there is a value in the lsm_prop + * @prop: Pointer to the exported LSM data + * + * Returns true if there is a value set, false otherwise + */ +static inline bool lsmprop_is_set(struct lsm_prop *prop) +{ + const struct lsm_prop empty = {}; - /* 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, - key_perm_t perm); - int (*key_getsecurity)(struct key *key, char **_buffer); -#endif /* CONFIG_KEYS */ + return !!memcmp(prop, &empty, sizeof(*prop)); +} -#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 */ -}; +int call_blocking_lsm_notifier(enum lsm_event event, void *data); +int register_blocking_lsm_notifier(struct notifier_block *nb); +int unregister_blocking_lsm_notifier(struct notifier_block *nb); /* prototypes */ extern int security_init(void); -extern int security_module_enable(struct security_operations *ops); -extern int register_security(struct security_operations *ops); -extern void __init security_fixup_ops(struct security_operations *ops); - +extern int early_security_init(void); +extern u64 lsm_name_to_attr(const char *name); /* Security operations */ +int security_binder_set_context_mgr(const struct cred *mgr); +int security_binder_transaction(const struct cred *from, + const struct cred *to); +int security_binder_transfer_binder(const struct cred *from, + const struct cred *to); +int security_binder_transfer_file(const struct cred *from, + const struct cred *to, const struct file *file); int security_ptrace_access_check(struct task_struct *child, unsigned int mode); int security_ptrace_traceme(struct task_struct *parent); -int security_capget(struct task_struct *target, +int security_capget(const struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); @@ -1728,51 +345,67 @@ int security_capset(struct cred *new, const struct cred *old, const kernel_cap_t *effective, const kernel_cap_t *inheritable, const kernel_cap_t *permitted); -int security_capable(const struct cred *cred, struct user_namespace *ns, - int cap); -int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, - int cap); -int security_quotactl(int cmds, int type, int id, struct super_block *sb); +int security_capable(const struct cred *cred, + struct user_namespace *ns, + int cap, + unsigned int opts); +int security_quotactl(int cmds, int type, int id, const struct super_block *sb); int security_quota_on(struct dentry *dentry); int security_syslog(int type); -int security_settime(const struct timespec *ts, const struct timezone *tz); +int security_settime64(const struct timespec64 *ts, const struct timezone *tz); int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); -int security_bprm_set_creds(struct linux_binprm *bprm); +int security_bprm_creds_for_exec(struct linux_binprm *bprm); +int security_bprm_creds_from_file(struct linux_binprm *bprm, const struct file *file); int security_bprm_check(struct linux_binprm *bprm); -void security_bprm_committing_creds(struct linux_binprm *bprm); -void security_bprm_committed_creds(struct linux_binprm *bprm); -int security_bprm_secureexec(struct linux_binprm *bprm); +void security_bprm_committing_creds(const struct linux_binprm *bprm); +void security_bprm_committed_creds(const struct linux_binprm *bprm); +int security_fs_context_submount(struct fs_context *fc, struct super_block *reference); +int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); +int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); int security_sb_alloc(struct super_block *sb); +void security_sb_delete(struct super_block *sb); void security_sb_free(struct super_block *sb); -int security_sb_copy_data(char *orig, char *copy); -int security_sb_remount(struct super_block *sb, void *data); -int security_sb_kern_mount(struct super_block *sb, int flags, void *data); +void security_free_mnt_opts(void **mnt_opts); +int security_sb_eat_lsm_opts(char *options, void **mnt_opts); +int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts); +int security_sb_remount(struct super_block *sb, void *mnt_opts); +int security_sb_kern_mount(const struct super_block *sb); int security_sb_show_options(struct seq_file *m, struct super_block *sb); int security_sb_statfs(struct dentry *dentry); -int security_sb_mount(const char *dev_name, struct path *path, +int security_sb_mount(const char *dev_name, const struct path *path, const char *type, unsigned long flags, void *data); int security_sb_umount(struct vfsmount *mnt, int flags); -int security_sb_pivotroot(struct path *old_path, struct path *new_path); +int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); int security_sb_set_mnt_opts(struct super_block *sb, - struct security_mnt_opts *opts, + void *mnt_opts, unsigned long kern_flags, unsigned long *set_kern_flags); int 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); + struct super_block *newsb, + unsigned long kern_flags, + unsigned long *set_kern_flags); +int security_move_mount(const struct path *from_path, const struct path *to_path); int security_dentry_init_security(struct dentry *dentry, int mode, - struct qstr *name, void **ctx, - u32 *ctxlen); - -int security_inode_alloc(struct inode *inode); + const struct qstr *name, + const char **xattr_name, + struct lsm_context *lsmcxt); +int security_dentry_create_files_as(struct dentry *dentry, int mode, + const struct qstr *name, + const struct cred *old, + struct cred *new); +int security_path_notify(const struct path *path, u64 mask, + unsigned int obj_type); +int security_inode_alloc(struct inode *inode, gfp_t gfp); void security_inode_free(struct inode *inode); int security_inode_init_security(struct inode *inode, struct inode *dir, const struct qstr *qstr, initxattrs initxattrs, void *fs_data); -int security_old_inode_init_security(struct inode *inode, struct inode *dir, - const struct qstr *qstr, char **name, - void **value, size_t *len); +int security_inode_init_security_anon(struct inode *inode, + const struct qstr *name, + const struct inode *context_inode); int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); +void security_inode_post_create_tmpfile(struct mnt_idmap *idmap, + struct inode *inode); 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); @@ -1782,29 +415,65 @@ int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) int security_inode_rmdir(struct inode *dir, struct dentry *dentry); int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry); + struct inode *new_dir, struct dentry *new_dentry, + unsigned int flags); int security_inode_readlink(struct dentry *dentry); -int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd); +int security_inode_follow_link(struct dentry *dentry, struct inode *inode, + bool rcu); 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); -int security_inode_setxattr(struct dentry *dentry, const char *name, +int security_inode_setattr(struct mnt_idmap *idmap, + struct dentry *dentry, struct iattr *attr); +void security_inode_post_setattr(struct mnt_idmap *idmap, struct dentry *dentry, + int ia_valid); +int security_inode_getattr(const struct path *path); +int security_inode_setxattr(struct mnt_idmap *idmap, + struct dentry *dentry, const char *name, const void *value, size_t size, int flags); +int security_inode_set_acl(struct mnt_idmap *idmap, + struct dentry *dentry, const char *acl_name, + struct posix_acl *kacl); +void security_inode_post_set_acl(struct dentry *dentry, const char *acl_name, + struct posix_acl *kacl); +int security_inode_get_acl(struct mnt_idmap *idmap, + struct dentry *dentry, const char *acl_name); +int security_inode_remove_acl(struct mnt_idmap *idmap, + struct dentry *dentry, const char *acl_name); +void security_inode_post_remove_acl(struct mnt_idmap *idmap, + struct dentry *dentry, + const char *acl_name); 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_removexattr(struct mnt_idmap *idmap, + struct dentry *dentry, const char *name); +void security_inode_post_removexattr(struct dentry *dentry, const char *name); +int security_inode_file_setattr(struct dentry *dentry, + struct file_kattr *fa); +int security_inode_file_getattr(struct dentry *dentry, + struct file_kattr *fa); 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_killpriv(struct mnt_idmap *idmap, struct dentry *dentry); +int security_inode_getsecurity(struct mnt_idmap *idmap, + 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); +void security_inode_getlsmprop(struct inode *inode, struct lsm_prop *prop); +int security_inode_copy_up(struct dentry *src, struct cred **new); +int security_inode_copy_up_xattr(struct dentry *src, const char *name); +int security_inode_setintegrity(const struct inode *inode, + enum lsm_integrity_type type, const void *value, + size_t size); +int security_kernfs_init_security(struct kernfs_node *kn_dir, + struct kernfs_node *kn); int security_file_permission(struct file *file, int mask); int security_file_alloc(struct file *file); +void security_file_release(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_ioctl_compat(struct file *file, unsigned int cmd, + unsigned long arg); int security_mmap_file(struct file *file, unsigned long prot, unsigned long flags); int security_mmap_addr(unsigned long addr); @@ -1812,85 +481,141 @@ 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); +void 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_file_open(struct file *file, const struct cred *cred); -int security_task_create(unsigned long clone_flags); +int security_file_open(struct file *file); +int security_file_post_open(struct file *file, int mask); +int security_file_truncate(struct file *file); +int security_task_alloc(struct task_struct *task, u64 clone_flags); void security_task_free(struct task_struct *task); int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); void security_cred_free(struct cred *cred); int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); void security_transfer_creds(struct cred *new, const struct cred *old); +void security_cred_getsecid(const struct cred *c, u32 *secid); +void security_cred_getlsmprop(const struct cred *c, struct lsm_prop *prop); int security_kernel_act_as(struct cred *new, u32 secid); int security_kernel_create_files_as(struct cred *new, struct inode *inode); int security_kernel_module_request(char *kmod_name); -int security_kernel_module_from_file(struct file *file); +int security_kernel_load_data(enum kernel_load_data_id id, bool contents); +int security_kernel_post_load_data(char *buf, loff_t size, + enum kernel_load_data_id id, + char *description); +int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, + bool contents); +int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, + enum kernel_read_file_id id); int security_task_fix_setuid(struct cred *new, const struct cred *old, int flags); +int security_task_fix_setgid(struct cred *new, const struct cred *old, + int flags); +int security_task_fix_setgroups(struct cred *new, const struct cred *old); 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); +void security_current_getlsmprop_subj(struct lsm_prop *prop); +void security_task_getlsmprop_obj(struct task_struct *p, struct lsm_prop *prop); 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_prlimit(const struct cred *cred, const struct cred *tcred, + unsigned int flags); int security_task_setrlimit(struct task_struct *p, unsigned int resource, struct rlimit *new_rlim); int security_task_setscheduler(struct task_struct *p); 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_kill(struct task_struct *p, struct kernel_siginfo *info, + int sig, const struct cred *cred); int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5); void security_task_to_inode(struct task_struct *p, struct inode *inode); +int security_create_user_ns(const struct cred *cred); int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); -void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); +void security_ipc_getlsmprop(struct kern_ipc_perm *ipcp, struct lsm_prop *prop); 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, +int security_msg_queue_alloc(struct kern_ipc_perm *msq); +void security_msg_queue_free(struct kern_ipc_perm *msq); +int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); +int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); +int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, struct msg_msg *msg, int msqflg); -int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, +int security_msg_queue_msgrcv(struct kern_ipc_perm *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, +int security_shm_alloc(struct kern_ipc_perm *shp); +void security_shm_free(struct kern_ipc_perm *shp); +int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); +int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); +int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); +int security_sem_alloc(struct kern_ipc_perm *sma); +void security_sem_free(struct kern_ipc_perm *sma); +int security_sem_associate(struct kern_ipc_perm *sma, int semflg); +int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); +int security_sem_semop(struct kern_ipc_perm *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_getselfattr(unsigned int attr, struct lsm_ctx __user *ctx, + u32 __user *size, u32 flags); +int security_setselfattr(unsigned int attr, struct lsm_ctx __user *ctx, + u32 size, u32 flags); +int security_getprocattr(struct task_struct *p, int lsmid, const char *name, + char **value); +int security_setprocattr(int lsmid, const char *name, void *value, size_t size); int security_ismaclabel(const char *name); -int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); +int security_secid_to_secctx(u32 secid, struct lsm_context *cp); +int security_lsmprop_to_secctx(struct lsm_prop *prop, struct lsm_context *cp, + int lsmid); int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); -void security_release_secctx(char *secdata, u32 seclen); - +void security_release_secctx(struct lsm_context *cp); +void security_inode_invalidate_secctx(struct inode *inode); int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); -int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); +int security_inode_getsecctx(struct inode *inode, struct lsm_context *cp); +int security_locked_down(enum lockdown_reason what); +int lsm_fill_user_ctx(struct lsm_ctx __user *uctx, u32 *uctx_len, + void *val, size_t val_len, u64 id, u64 flags); +int security_bdev_alloc(struct block_device *bdev); +void security_bdev_free(struct block_device *bdev); +int security_bdev_setintegrity(struct block_device *bdev, + enum lsm_integrity_type type, const void *value, + size_t size); #else /* CONFIG_SECURITY */ -struct security_mnt_opts { -}; -static inline void security_init_mnt_opts(struct security_mnt_opts *opts) +/** + * lsmprop_is_set - report if there is a value in the lsm_prop + * @prop: Pointer to the exported LSM data + * + * Returns true if there is a value set, false otherwise + */ +static inline bool lsmprop_is_set(struct lsm_prop *prop) +{ + return false; +} + +static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) { + return 0; } -static inline void security_free_mnt_opts(struct security_mnt_opts *opts) +static inline int register_blocking_lsm_notifier(struct notifier_block *nb) +{ + return 0; +} + +static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) +{ + return 0; +} + +static inline u64 lsm_name_to_attr(const char *name) +{ + return LSM_ATTR_UNDEF; +} + +static inline void security_free_mnt_opts(void **mnt_opts) { } @@ -1904,6 +629,35 @@ static inline int security_init(void) return 0; } +static inline int early_security_init(void) +{ + return 0; +} + +static inline int security_binder_set_context_mgr(const struct cred *mgr) +{ + return 0; +} + +static inline int security_binder_transaction(const struct cred *from, + const struct cred *to) +{ + return 0; +} + +static inline int security_binder_transfer_binder(const struct cred *from, + const struct cred *to) +{ + return 0; +} + +static inline int security_binder_transfer_file(const struct cred *from, + const struct cred *to, + const struct file *file) +{ + return 0; +} + static inline int security_ptrace_access_check(struct task_struct *child, unsigned int mode) { @@ -1915,7 +669,7 @@ static inline int security_ptrace_traceme(struct task_struct *parent) return cap_ptrace_traceme(parent); } -static inline int security_capget(struct task_struct *target, +static inline int security_capget(const struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted) @@ -1933,18 +687,15 @@ static inline int security_capset(struct cred *new, } static inline int security_capable(const struct cred *cred, - struct user_namespace *ns, int cap) + struct user_namespace *ns, + int cap, + unsigned int opts) { - return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT); -} - -static inline int security_capable_noaudit(const struct cred *cred, - struct user_namespace *ns, int cap) { - return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); + return cap_capable(cred, ns, cap, opts); } static inline int security_quotactl(int cmds, int type, int id, - struct super_block *sb) + const struct super_block *sb) { return 0; } @@ -1959,20 +710,26 @@ static inline int security_syslog(int type) return 0; } -static inline int security_settime(const struct timespec *ts, - const struct timezone *tz) +static inline int security_settime64(const struct timespec64 *ts, + const struct timezone *tz) { return cap_settime(ts, tz); } static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) { - return cap_vm_enough_memory(mm, pages); + return __vm_enough_memory(mm, pages, !cap_vm_enough_memory(mm, pages)); +} + +static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) +{ + return 0; } -static inline int security_bprm_set_creds(struct linux_binprm *bprm) +static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, + const struct file *file) { - return cap_bprm_set_creds(bprm); + return cap_bprm_creds_from_file(bprm, file); } static inline int security_bprm_check(struct linux_binprm *bprm) @@ -1980,17 +737,28 @@ static inline int security_bprm_check(struct linux_binprm *bprm) return 0; } -static inline void security_bprm_committing_creds(struct linux_binprm *bprm) +static inline void security_bprm_committing_creds(const struct linux_binprm *bprm) { } -static inline void security_bprm_committed_creds(struct linux_binprm *bprm) +static inline void security_bprm_committed_creds(const struct linux_binprm *bprm) { } -static inline int security_bprm_secureexec(struct linux_binprm *bprm) +static inline int security_fs_context_submount(struct fs_context *fc, + struct super_block *reference) { - return cap_bprm_secureexec(bprm); + return 0; +} +static inline int security_fs_context_dup(struct fs_context *fc, + struct fs_context *src_fc) +{ + return 0; +} +static inline int security_fs_context_parse_param(struct fs_context *fc, + struct fs_parameter *param) +{ + return -ENOPARAM; } static inline int security_sb_alloc(struct super_block *sb) @@ -1998,20 +766,32 @@ static inline int security_sb_alloc(struct super_block *sb) return 0; } +static inline void security_sb_delete(struct super_block *sb) +{ } + static inline void security_sb_free(struct super_block *sb) { } -static inline int security_sb_copy_data(char *orig, char *copy) +static inline int security_sb_eat_lsm_opts(char *options, + void **mnt_opts) { return 0; } -static inline int security_sb_remount(struct super_block *sb, void *data) +static inline int security_sb_remount(struct super_block *sb, + void *mnt_opts) { return 0; } -static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) +static inline int security_sb_mnt_opts_compat(struct super_block *sb, + void *mnt_opts) +{ + return 0; +} + + +static inline int security_sb_kern_mount(struct super_block *sb) { return 0; } @@ -2027,7 +807,7 @@ static inline int security_sb_statfs(struct dentry *dentry) return 0; } -static inline int security_sb_mount(const char *dev_name, struct path *path, +static inline int security_sb_mount(const char *dev_name, const struct path *path, const char *type, unsigned long flags, void *data) { @@ -2039,14 +819,14 @@ static inline int security_sb_umount(struct vfsmount *mnt, int flags) return 0; } -static inline int security_sb_pivotroot(struct path *old_path, - struct path *new_path) +static inline int security_sb_pivotroot(const struct path *old_path, + const struct path *new_path) { return 0; } static inline int security_sb_set_mnt_opts(struct super_block *sb, - struct security_mnt_opts *opts, + void *mnt_opts, unsigned long kern_flags, unsigned long *set_kern_flags) { @@ -2054,17 +834,26 @@ static inline int security_sb_set_mnt_opts(struct super_block *sb, } static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, - struct super_block *newsb) + struct super_block *newsb, + unsigned long kern_flags, + unsigned long *set_kern_flags) { return 0; } -static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) +static inline int security_move_mount(const struct path *from_path, + const struct path *to_path) { return 0; } -static inline int security_inode_alloc(struct inode *inode) +static inline int security_path_notify(const struct path *path, u64 mask, + unsigned int obj_type) +{ + return 0; +} + +static inline int security_inode_alloc(struct inode *inode, gfp_t gfp) { return 0; } @@ -2074,30 +863,36 @@ static inline void security_inode_free(struct inode *inode) static inline int security_dentry_init_security(struct dentry *dentry, int mode, - struct qstr *name, - void **ctx, - u32 *ctxlen) + const struct qstr *name, + const char **xattr_name, + struct lsm_context *lsmcxt) { return -EOPNOTSUPP; } +static inline int security_dentry_create_files_as(struct dentry *dentry, + int mode, const struct qstr *name, + const struct cred *old, + struct cred *new) +{ + return 0; +} + static inline int security_inode_init_security(struct inode *inode, struct inode *dir, const struct qstr *qstr, - const initxattrs initxattrs, + const initxattrs xattrs, void *fs_data) { return 0; } -static inline int security_old_inode_init_security(struct inode *inode, - struct inode *dir, - const struct qstr *qstr, - char **name, void **value, - size_t *len) +static inline int security_inode_init_security_anon(struct inode *inode, + const struct qstr *name, + const struct inode *context_inode) { - return -EOPNOTSUPP; + return 0; } static inline int security_inode_create(struct inode *dir, @@ -2107,6 +902,10 @@ static inline int security_inode_create(struct inode *dir, return 0; } +static inline void +security_inode_post_create_tmpfile(struct mnt_idmap *idmap, struct inode *inode) +{ } + static inline int security_inode_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry) @@ -2150,7 +949,8 @@ static inline int security_inode_mknod(struct inode *dir, static inline int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, - struct dentry *new_dentry) + struct dentry *new_dentry, + unsigned int flags) { return 0; } @@ -2161,7 +961,8 @@ static inline int security_inode_readlink(struct dentry *dentry) } static inline int security_inode_follow_link(struct dentry *dentry, - struct nameidata *nd) + struct inode *inode, + bool rcu) { return 0; } @@ -2171,24 +972,62 @@ 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) +static inline int security_inode_setattr(struct mnt_idmap *idmap, + struct dentry *dentry, + struct iattr *attr) { return 0; } -static inline int security_inode_getattr(struct vfsmount *mnt, - struct dentry *dentry) +static inline void +security_inode_post_setattr(struct mnt_idmap *idmap, struct dentry *dentry, + int ia_valid) +{ } + +static inline int security_inode_getattr(const struct path *path) { return 0; } -static inline int security_inode_setxattr(struct dentry *dentry, - const char *name, const void *value, size_t size, int flags) +static inline int security_inode_setxattr(struct mnt_idmap *idmap, + 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 int security_inode_set_acl(struct mnt_idmap *idmap, + struct dentry *dentry, + const char *acl_name, + struct posix_acl *kacl) +{ + return 0; +} + +static inline void security_inode_post_set_acl(struct dentry *dentry, + const char *acl_name, + struct posix_acl *kacl) +{ } + +static inline int security_inode_get_acl(struct mnt_idmap *idmap, + struct dentry *dentry, + const char *acl_name) +{ + return 0; +} + +static inline int security_inode_remove_acl(struct mnt_idmap *idmap, + struct dentry *dentry, + const char *acl_name) +{ + return 0; +} + +static inline void security_inode_post_remove_acl(struct mnt_idmap *idmap, + struct dentry *dentry, + const char *acl_name) +{ } + static inline void security_inode_post_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags) { } @@ -2204,10 +1043,27 @@ static inline int security_inode_listxattr(struct dentry *dentry) return 0; } -static inline int security_inode_removexattr(struct dentry *dentry, - const char *name) +static inline int security_inode_removexattr(struct mnt_idmap *idmap, + struct dentry *dentry, + const char *name) +{ + return cap_inode_removexattr(idmap, dentry, name); +} + +static inline void security_inode_post_removexattr(struct dentry *dentry, + const char *name) +{ } + +static inline int security_inode_file_setattr(struct dentry *dentry, + struct file_kattr *fa) +{ + return 0; +} + +static inline int security_inode_file_getattr(struct dentry *dentry, + struct file_kattr *fa) { - return cap_inode_removexattr(dentry, name); + return 0; } static inline int security_inode_need_killpriv(struct dentry *dentry) @@ -2215,14 +1071,18 @@ 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) +static inline int security_inode_killpriv(struct mnt_idmap *idmap, + struct dentry *dentry) { - return cap_inode_killpriv(dentry); + return cap_inode_killpriv(idmap, dentry); } -static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc) +static inline int security_inode_getsecurity(struct mnt_idmap *idmap, + struct inode *inode, + const char *name, void **buffer, + bool alloc) { - return -EOPNOTSUPP; + return cap_inode_getsecurity(idmap, inode, name, buffer, alloc); } static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) @@ -2235,9 +1095,33 @@ static inline int security_inode_listsecurity(struct inode *inode, char *buffer, return 0; } -static inline void security_inode_getsecid(const struct inode *inode, u32 *secid) +static inline void security_inode_getlsmprop(struct inode *inode, + struct lsm_prop *prop) { - *secid = 0; + lsmprop_init(prop); +} + +static inline int security_inode_copy_up(struct dentry *src, struct cred **new) +{ + return 0; +} + +static inline int security_inode_setintegrity(const struct inode *inode, + enum lsm_integrity_type type, + const void *value, size_t size) +{ + return 0; +} + +static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, + struct kernfs_node *kn) +{ + return 0; +} + +static inline int security_inode_copy_up_xattr(struct dentry *src, const char *name) +{ + return -EOPNOTSUPP; } static inline int security_file_permission(struct file *file, int mask) @@ -2250,6 +1134,9 @@ static inline int security_file_alloc(struct file *file) return 0; } +static inline void security_file_release(struct file *file) +{ } + static inline void security_file_free(struct file *file) { } @@ -2259,6 +1146,13 @@ static inline int security_file_ioctl(struct file *file, unsigned int cmd, return 0; } +static inline int security_file_ioctl_compat(struct file *file, + unsigned int cmd, + unsigned long arg) +{ + return 0; +} + static inline int security_mmap_file(struct file *file, unsigned long prot, unsigned long flags) { @@ -2288,9 +1182,9 @@ static inline int security_file_fcntl(struct file *file, unsigned int cmd, return 0; } -static inline int security_file_set_fowner(struct file *file) +static inline void security_file_set_fowner(struct file *file) { - return 0; + return; } static inline int security_file_send_sigiotask(struct task_struct *tsk, @@ -2305,13 +1199,23 @@ static inline int security_file_receive(struct file *file) return 0; } -static inline int security_file_open(struct file *file, - const struct cred *cred) +static inline int security_file_open(struct file *file) +{ + return 0; +} + +static inline int security_file_post_open(struct file *file, int mask) +{ + return 0; +} + +static inline int security_file_truncate(struct file *file) { return 0; } -static inline int security_task_create(unsigned long clone_flags) +static inline int security_task_alloc(struct task_struct *task, + u64 clone_flags) { return 0; } @@ -2339,6 +1243,15 @@ static inline void security_transfer_creds(struct cred *new, { } +static inline void security_cred_getsecid(const struct cred *c, u32 *secid) +{ + *secid = 0; +} + +static inline void security_cred_getlsmprop(const struct cred *c, + struct lsm_prop *prop) +{ } + static inline int security_kernel_act_as(struct cred *cred, u32 secid) { return 0; @@ -2355,7 +1268,28 @@ static inline int security_kernel_module_request(char *kmod_name) return 0; } -static inline int security_kernel_module_from_file(struct file *file) +static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) +{ + return 0; +} + +static inline int security_kernel_post_load_data(char *buf, loff_t size, + enum kernel_load_data_id id, + char *description) +{ + return 0; +} + +static inline int security_kernel_read_file(struct file *file, + enum kernel_read_file_id id, + bool contents) +{ + return 0; +} + +static inline int security_kernel_post_read_file(struct file *file, + char *buf, loff_t size, + enum kernel_read_file_id id) { return 0; } @@ -2367,6 +1301,19 @@ static inline int security_task_fix_setuid(struct cred *new, return cap_task_fix_setuid(new, old, flags); } +static inline int security_task_fix_setgid(struct cred *new, + const struct cred *old, + int flags) +{ + return 0; +} + +static inline int security_task_fix_setgroups(struct cred *new, + const struct cred *old) +{ + return 0; +} + static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) { return 0; @@ -2382,9 +1329,15 @@ static inline int security_task_getsid(struct task_struct *p) return 0; } -static inline void security_task_getsecid(struct task_struct *p, u32 *secid) +static inline void security_current_getlsmprop_subj(struct lsm_prop *prop) { - *secid = 0; + lsmprop_init(prop); +} + +static inline void security_task_getlsmprop_obj(struct task_struct *p, + struct lsm_prop *prop) +{ + lsmprop_init(prop); } static inline int security_task_setnice(struct task_struct *p, int nice) @@ -2402,6 +1355,13 @@ static inline int security_task_getioprio(struct task_struct *p) return 0; } +static inline int security_task_prlimit(const struct cred *cred, + const struct cred *tcred, + unsigned int flags) +{ + return 0; +} + static inline int security_task_setrlimit(struct task_struct *p, unsigned int resource, struct rlimit *new_rlim) @@ -2425,13 +1385,8 @@ static inline int security_task_movememory(struct task_struct *p) } 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) + struct kernel_siginfo *info, int sig, + const struct cred *cred) { return 0; } @@ -2441,21 +1396,27 @@ static inline int security_task_prctl(int option, unsigned long arg2, unsigned long arg4, unsigned long arg5) { - return cap_task_prctl(option, arg2, arg3, arg3, arg5); + return cap_task_prctl(option, arg2, arg3, arg4, arg5); } static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) { } +static inline int security_create_user_ns(const struct cred *cred) +{ + return 0; +} + 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) +static inline void security_ipc_getlsmprop(struct kern_ipc_perm *ipcp, + struct lsm_prop *prop) { - *secid = 0; + lsmprop_init(prop); } static inline int security_msg_msg_alloc(struct msg_msg *msg) @@ -2466,32 +1427,32 @@ static inline int security_msg_msg_alloc(struct msg_msg *msg) static inline void security_msg_msg_free(struct msg_msg *msg) { } -static inline int security_msg_queue_alloc(struct msg_queue *msq) +static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) { return 0; } -static inline void security_msg_queue_free(struct msg_queue *msq) +static inline void security_msg_queue_free(struct kern_ipc_perm *msq) { } -static inline int security_msg_queue_associate(struct msg_queue *msq, +static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) { return 0; } -static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) +static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) { return 0; } -static inline int security_msg_queue_msgsnd(struct msg_queue *msq, +static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, struct msg_msg *msg, int msqflg) { return 0; } -static inline int security_msg_queue_msgrcv(struct msg_queue *msq, +static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, struct task_struct *target, long type, int mode) @@ -2499,72 +1460,84 @@ static inline int security_msg_queue_msgrcv(struct msg_queue *msq, return 0; } -static inline int security_shm_alloc(struct shmid_kernel *shp) +static inline int security_shm_alloc(struct kern_ipc_perm *shp) { return 0; } -static inline void security_shm_free(struct shmid_kernel *shp) +static inline void security_shm_free(struct kern_ipc_perm *shp) { } -static inline int security_shm_associate(struct shmid_kernel *shp, +static inline int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) { return 0; } -static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd) +static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) { return 0; } -static inline int security_shm_shmat(struct shmid_kernel *shp, +static inline int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) { return 0; } -static inline int security_sem_alloc(struct sem_array *sma) +static inline int security_sem_alloc(struct kern_ipc_perm *sma) { return 0; } -static inline void security_sem_free(struct sem_array *sma) +static inline void security_sem_free(struct kern_ipc_perm *sma) { } -static inline int security_sem_associate(struct sem_array *sma, int semflg) +static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) { return 0; } -static inline int security_sem_semctl(struct sem_array *sma, int cmd) +static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) { return 0; } -static inline int security_sem_semop(struct sem_array *sma, +static inline int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, unsigned nsops, int alter) { return 0; } -static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode) +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) +static inline int security_getselfattr(unsigned int attr, + struct lsm_ctx __user *ctx, + size_t __user *size, u32 flags) { - return -EINVAL; + return -EOPNOTSUPP; } -static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) +static inline int security_setselfattr(unsigned int attr, + struct lsm_ctx __user *ctx, + size_t size, u32 flags) +{ + return -EOPNOTSUPP; +} + +static inline int security_getprocattr(struct task_struct *p, int lsmid, + const char *name, char **value) { return -EINVAL; } -static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) +static inline int security_setprocattr(int lsmid, char *name, void *value, + size_t size) { - return cap_netlink_send(sk, skb); + return -EINVAL; } static inline int security_ismaclabel(const char *name) @@ -2572,7 +1545,14 @@ static inline int security_ismaclabel(const char *name) return 0; } -static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) +static inline int security_secid_to_secctx(u32 secid, struct lsm_context *cp) +{ + return -EOPNOTSUPP; +} + +static inline int security_lsmprop_to_secctx(struct lsm_prop *prop, + struct lsm_context *cp, + int lsmid) { return -EOPNOTSUPP; } @@ -2584,7 +1564,11 @@ static inline int security_secctx_to_secid(const char *secdata, return -EOPNOTSUPP; } -static inline void security_release_secctx(char *secdata, u32 seclen) +static inline void security_release_secctx(struct lsm_context *cp) +{ +} + +static inline void security_inode_invalidate_secctx(struct inode *inode) { } @@ -2596,19 +1580,71 @@ static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 { return -EOPNOTSUPP; } -static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) +static inline int security_inode_getsecctx(struct inode *inode, + struct lsm_context *cp) +{ + return -EOPNOTSUPP; +} +static inline int security_locked_down(enum lockdown_reason what) +{ + return 0; +} +static inline int lsm_fill_user_ctx(struct lsm_ctx __user *uctx, + u32 *uctx_len, void *val, size_t val_len, + u64 id, u64 flags) { return -EOPNOTSUPP; } + +static inline int security_bdev_alloc(struct block_device *bdev) +{ + return 0; +} + +static inline void security_bdev_free(struct block_device *bdev) +{ +} + +static inline int security_bdev_setintegrity(struct block_device *bdev, + enum lsm_integrity_type type, + const void *value, size_t size) +{ + return 0; +} + #endif /* CONFIG_SECURITY */ +#if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) +int security_post_notification(const struct cred *w_cred, + const struct cred *cred, + struct watch_notification *n); +#else +static inline int security_post_notification(const struct cred *w_cred, + const struct cred *cred, + struct watch_notification *n) +{ + return 0; +} +#endif + +#if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) +int security_watch_key(struct key *key); +#else +static inline int security_watch_key(struct key *key) +{ + return 0; +} +#endif + #ifdef CONFIG_SECURITY_NETWORK +int security_netlink_send(struct sock *sk, struct sk_buff *skb); int security_unix_stream_connect(struct sock *sock, struct sock *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_socketpair(struct socket *socka, struct socket *sockb); 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); @@ -2622,16 +1658,18 @@ 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_stream(struct socket *sock, sockptr_t optval, + sockptr_t optlen, unsigned int 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_sk_classify_flow(const struct sock *sk, + struct flowi_common *flic); +void security_req_classify_flow(const struct request_sock *req, + struct flowi_common *flic); void security_sock_graft(struct sock*sk, struct socket *parent); -int security_inet_conn_request(struct sock *sk, +int security_inet_conn_request(const struct sock *sk, struct sk_buff *skb, struct request_sock *req); void security_inet_csk_clone(struct sock *newsk, const struct request_sock *req); @@ -2646,10 +1684,21 @@ int security_tun_dev_create(void); int security_tun_dev_attach_queue(void *security); int security_tun_dev_attach(struct sock *sk, void *security); int security_tun_dev_open(void *security); - -void security_skb_owned_by(struct sk_buff *skb, struct sock *sk); +int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb); +int security_sctp_bind_connect(struct sock *sk, int optname, + struct sockaddr *address, int addrlen); +void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, + struct sock *newsk); +int security_sctp_assoc_established(struct sctp_association *asoc, + struct sk_buff *skb); +int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk); #else /* CONFIG_SECURITY_NETWORK */ +static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) +{ + return 0; +} + static inline int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) @@ -2677,6 +1726,12 @@ static inline int security_socket_post_create(struct socket *sock, return 0; } +static inline int security_socket_socketpair(struct socket *socka, + struct socket *sockb) +{ + return 0; +} + static inline int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) @@ -2747,8 +1802,10 @@ static inline int security_sock_rcv_skb(struct sock *sk, return 0; } -static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, - int __user *optlen, unsigned len) +static inline int security_socket_getpeersec_stream(struct socket *sock, + sockptr_t optval, + sockptr_t optlen, + unsigned int len) { return -ENOPROTOOPT; } @@ -2771,11 +1828,13 @@ 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_sk_classify_flow(const struct sock *sk, + struct flowi_common *flic) { } -static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) +static inline void security_req_classify_flow(const struct request_sock *req, + struct flowi_common *flic) { } @@ -2783,7 +1842,7 @@ static inline void security_sock_graft(struct sock *sk, struct socket *parent) { } -static inline int security_inet_conn_request(struct sock *sk, +static inline int security_inet_conn_request(const struct sock *sk, struct sk_buff *skb, struct request_sock *req) { return 0; @@ -2841,15 +1900,67 @@ static inline int security_tun_dev_open(void *security) return 0; } -static inline void security_skb_owned_by(struct sk_buff *skb, struct sock *sk) +static inline int security_sctp_assoc_request(struct sctp_association *asoc, + struct sk_buff *skb) +{ + return 0; +} + +static inline int security_sctp_bind_connect(struct sock *sk, int optname, + struct sockaddr *address, + int addrlen) +{ + return 0; +} + +static inline void security_sctp_sk_clone(struct sctp_association *asoc, + struct sock *sk, + struct sock *newsk) { } +static inline int security_sctp_assoc_established(struct sctp_association *asoc, + struct sk_buff *skb) +{ + return 0; +} + +static inline int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk) +{ + return 0; +} #endif /* CONFIG_SECURITY_NETWORK */ +#ifdef CONFIG_SECURITY_INFINIBAND +int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); +int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); +int security_ib_alloc_security(void **sec); +void security_ib_free_security(void *sec); +#else /* CONFIG_SECURITY_INFINIBAND */ +static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) +{ + return 0; +} + +static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) +{ + return 0; +} + +static inline int security_ib_alloc_security(void **sec) +{ + return 0; +} + +static inline void security_ib_free_security(void *sec) +{ +} +#endif /* CONFIG_SECURITY_INFINIBAND */ + #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_alloc(struct xfrm_sec_ctx **ctxp, + struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 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); @@ -2858,16 +1969,18 @@ 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_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); int security_xfrm_state_pol_flow_match(struct xfrm_state *x, struct xfrm_policy *xp, - const struct flowi *fl); + const struct flowi_common *flic); int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); -void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); +void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); #else /* CONFIG_SECURITY_NETWORK_XFRM */ -static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx) +static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, + struct xfrm_user_sec_ctx *sec_ctx, + gfp_t gfp) { return 0; } @@ -2907,13 +2020,14 @@ 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) +static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) { return 0; } static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, - struct xfrm_policy *xp, const struct flowi *fl) + struct xfrm_policy *xp, + const struct flowi_common *flic) { return 1; } @@ -2923,88 +2037,96 @@ 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) +static inline void security_skb_classify_flow(struct sk_buff *skb, + struct flowi_common *flic) { } #endif /* CONFIG_SECURITY_NETWORK_XFRM */ #ifdef CONFIG_SECURITY_PATH -int security_path_unlink(struct path *dir, struct dentry *dentry); -int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode); -int security_path_rmdir(struct path *dir, struct dentry *dentry); -int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode, +int security_path_unlink(const struct path *dir, struct dentry *dentry); +int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); +int security_path_rmdir(const struct path *dir, struct dentry *dentry); +int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, unsigned int dev); -int security_path_truncate(struct path *path); -int security_path_symlink(struct path *dir, struct dentry *dentry, +void security_path_post_mknod(struct mnt_idmap *idmap, struct dentry *dentry); +int security_path_truncate(const struct path *path); +int security_path_symlink(const struct path *dir, struct dentry *dentry, const char *old_name); -int security_path_link(struct dentry *old_dentry, struct path *new_dir, +int security_path_link(struct dentry *old_dentry, const struct path *new_dir, struct dentry *new_dentry); -int security_path_rename(struct path *old_dir, struct dentry *old_dentry, - struct path *new_dir, struct dentry *new_dentry); -int security_path_chmod(struct path *path, umode_t mode); -int security_path_chown(struct path *path, kuid_t uid, kgid_t gid); -int security_path_chroot(struct path *path); +int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, + const struct path *new_dir, struct dentry *new_dentry, + unsigned int flags); +int security_path_chmod(const struct path *path, umode_t mode); +int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); +int security_path_chroot(const struct path *path); #else /* CONFIG_SECURITY_PATH */ -static inline int security_path_unlink(struct path *dir, struct dentry *dentry) +static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) { return 0; } -static inline int security_path_mkdir(struct path *dir, struct dentry *dentry, +static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) { return 0; } -static inline int security_path_rmdir(struct path *dir, struct dentry *dentry) +static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) { return 0; } -static inline int security_path_mknod(struct path *dir, struct dentry *dentry, +static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, unsigned int dev) { return 0; } -static inline int security_path_truncate(struct path *path) +static inline void security_path_post_mknod(struct mnt_idmap *idmap, + struct dentry *dentry) +{ } + +static inline int security_path_truncate(const struct path *path) { return 0; } -static inline int security_path_symlink(struct path *dir, struct dentry *dentry, +static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, const char *old_name) { return 0; } static inline int security_path_link(struct dentry *old_dentry, - struct path *new_dir, + const struct path *new_dir, struct dentry *new_dentry) { return 0; } -static inline int security_path_rename(struct path *old_dir, +static inline int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, - struct path *new_dir, - struct dentry *new_dentry) + const struct path *new_dir, + struct dentry *new_dentry, + unsigned int flags) { return 0; } -static inline int security_path_chmod(struct path *path, umode_t mode) +static inline int security_path_chmod(const struct path *path, umode_t mode) { return 0; } -static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid) +static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) { return 0; } -static inline int security_path_chroot(struct path *path) +static inline int security_path_chroot(const struct path *path) { return 0; } @@ -3015,9 +2137,12 @@ static inline int security_path_chroot(struct path *path) int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); void security_key_free(struct key *key); -int security_key_permission(key_ref_t key_ref, - const struct cred *cred, key_perm_t perm); +int security_key_permission(key_ref_t key_ref, const struct cred *cred, + enum key_need_perm need_perm); int security_key_getsecurity(struct key *key, char **_buffer); +void security_key_post_create_or_update(struct key *keyring, struct key *key, + const void *payload, size_t payload_len, + unsigned long flags, bool create); #else @@ -3034,7 +2159,7 @@ static inline void security_key_free(struct key *key) static inline int security_key_permission(key_ref_t key_ref, const struct cred *cred, - key_perm_t perm) + enum key_need_perm need_perm) { return 0; } @@ -3045,21 +2170,30 @@ static inline int security_key_getsecurity(struct key *key, char **_buffer) return 0; } +static inline void security_key_post_create_or_update(struct key *keyring, + struct key *key, + const void *payload, + size_t payload_len, + unsigned long flags, + bool create) +{ } + #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_init(u32 field, u32 op, char *rulestr, void **lsmrule, + gfp_t gfp); 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); +int security_audit_rule_match(struct lsm_prop *prop, u32 field, u32 op, + void *lsmrule); void security_audit_rule_free(void *lsmrule); #else static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, - void **lsmrule) + void **lsmrule, gfp_t gfp) { return 0; } @@ -3069,8 +2203,8 @@ 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) +static inline int security_audit_rule_match(struct lsm_prop *prop, u32 field, + u32 op, void *lsmrule) { return 0; } @@ -3087,6 +2221,10 @@ extern struct dentry *securityfs_create_file(const char *name, umode_t mode, struct dentry *parent, void *data, const struct file_operations *fops); extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); +struct dentry *securityfs_create_symlink(const char *name, + struct dentry *parent, + const char *target, + const struct inode_operations *iops); extern void securityfs_remove(struct dentry *dentry); #else /* CONFIG_SECURITYFS */ @@ -3106,64 +2244,164 @@ static inline struct dentry *securityfs_create_file(const char *name, return ERR_PTR(-ENODEV); } +static inline struct dentry *securityfs_create_symlink(const char *name, + struct dentry *parent, + const char *target, + const struct inode_operations *iops) +{ + return ERR_PTR(-ENODEV); +} + static inline void securityfs_remove(struct dentry *dentry) {} #endif +#ifdef CONFIG_BPF_SYSCALL +union bpf_attr; +struct bpf_map; +struct bpf_prog; +struct bpf_token; #ifdef CONFIG_SECURITY +extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size, bool kernel); +extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); +extern int security_bpf_prog(struct bpf_prog *prog); +extern int security_bpf_map_create(struct bpf_map *map, union bpf_attr *attr, + struct bpf_token *token, bool kernel); +extern void security_bpf_map_free(struct bpf_map *map); +extern int security_bpf_prog_load(struct bpf_prog *prog, union bpf_attr *attr, + struct bpf_token *token, bool kernel); +extern void security_bpf_prog_free(struct bpf_prog *prog); +extern int security_bpf_token_create(struct bpf_token *token, union bpf_attr *attr, + const struct path *path); +extern void security_bpf_token_free(struct bpf_token *token); +extern int security_bpf_token_cmd(const struct bpf_token *token, enum bpf_cmd cmd); +extern int security_bpf_token_capable(const struct bpf_token *token, int cap); +#else +static inline int security_bpf(int cmd, union bpf_attr *attr, + unsigned int size, bool kernel) +{ + return 0; +} -static inline char *alloc_secdata(void) +static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) { - return (char *)get_zeroed_page(GFP_KERNEL); + return 0; } -static inline void free_secdata(void *secdata) +static inline int security_bpf_prog(struct bpf_prog *prog) { - free_page((unsigned long)secdata); + return 0; } -#else +static inline int security_bpf_map_create(struct bpf_map *map, union bpf_attr *attr, + struct bpf_token *token, bool kernel) +{ + return 0; +} + +static inline void security_bpf_map_free(struct bpf_map *map) +{ } + +static inline int security_bpf_prog_load(struct bpf_prog *prog, union bpf_attr *attr, + struct bpf_token *token, bool kernel) +{ + return 0; +} -static inline char *alloc_secdata(void) +static inline void security_bpf_prog_free(struct bpf_prog *prog) +{ } + +static inline int security_bpf_token_create(struct bpf_token *token, union bpf_attr *attr, + const struct path *path) { - return (char *)1; + return 0; } -static inline void free_secdata(void *secdata) +static inline void security_bpf_token_free(struct bpf_token *token) { } + +static inline int security_bpf_token_cmd(const struct bpf_token *token, enum bpf_cmd cmd) +{ + return 0; +} + +static inline int security_bpf_token_capable(const struct bpf_token *token, int cap) +{ + return 0; +} #endif /* CONFIG_SECURITY */ +#endif /* CONFIG_BPF_SYSCALL */ -#ifdef CONFIG_SECURITY_YAMA -extern int yama_ptrace_access_check(struct task_struct *child, - unsigned int mode); -extern int yama_ptrace_traceme(struct task_struct *parent); -extern void yama_task_free(struct task_struct *task); -extern int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3, - unsigned long arg4, unsigned long arg5); +#ifdef CONFIG_PERF_EVENTS +struct perf_event_attr; +struct perf_event; + +#ifdef CONFIG_SECURITY +extern int security_perf_event_open(int type); +extern int security_perf_event_alloc(struct perf_event *event); +extern void security_perf_event_free(struct perf_event *event); +extern int security_perf_event_read(struct perf_event *event); +extern int security_perf_event_write(struct perf_event *event); #else -static inline int yama_ptrace_access_check(struct task_struct *child, - unsigned int mode) +static inline int security_perf_event_open(int type) +{ + return 0; +} + +static inline int security_perf_event_alloc(struct perf_event *event) +{ + return 0; +} + +static inline void security_perf_event_free(struct perf_event *event) +{ +} + +static inline int security_perf_event_read(struct perf_event *event) { return 0; } -static inline int yama_ptrace_traceme(struct task_struct *parent) +static inline int security_perf_event_write(struct perf_event *event) { return 0; } +#endif /* CONFIG_SECURITY */ +#endif /* CONFIG_PERF_EVENTS */ -static inline void yama_task_free(struct task_struct *task) +#ifdef CONFIG_IO_URING +#ifdef CONFIG_SECURITY +extern int security_uring_override_creds(const struct cred *new); +extern int security_uring_sqpoll(void); +extern int security_uring_cmd(struct io_uring_cmd *ioucmd); +extern int security_uring_allowed(void); +#else +static inline int security_uring_override_creds(const struct cred *new) +{ + return 0; +} +static inline int security_uring_sqpoll(void) +{ + return 0; +} +static inline int security_uring_cmd(struct io_uring_cmd *ioucmd) +{ + return 0; +} +static inline int security_uring_allowed(void) { + return 0; } +#endif /* CONFIG_SECURITY */ +#endif /* CONFIG_IO_URING */ -static inline int yama_task_prctl(int option, unsigned long arg2, - unsigned long arg3, unsigned long arg4, - unsigned long arg5) +#ifdef CONFIG_SECURITY +extern void security_initramfs_populated(void); +#else +static inline void security_initramfs_populated(void) { - return -ENOSYS; } -#endif /* CONFIG_SECURITY_YAMA */ +#endif /* CONFIG_SECURITY */ #endif /* ! __LINUX_SECURITY_H */ - |