diff options
Diffstat (limited to 'include/linux/security.h')
| -rw-r--r-- | include/linux/security.h | 137 |
1 files changed, 100 insertions, 37 deletions
diff --git a/include/linux/security.h b/include/linux/security.h index cbdba435b798..41d7367cf403 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -85,6 +85,7 @@ struct timezone; enum lsm_event { LSM_POLICY_CHANGE, + LSM_STARTED_ALL, }; struct dm_verity_digest { @@ -144,6 +145,7 @@ enum lockdown_reason { LOCKDOWN_BPF_WRITE_USER, LOCKDOWN_DBG_WRITE_KERNEL, LOCKDOWN_RTAS_ERROR_INJECTION, + LOCKDOWN_XEN_USER_ACTIONS, LOCKDOWN_INTEGRITY_MAX, LOCKDOWN_KCORE, LOCKDOWN_KPROBES, @@ -167,8 +169,6 @@ struct lsm_prop { }; extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; -extern u32 lsm_active_cnt; -extern const struct lsm_id *lsm_idlist[]; /* These functions are in security/commoncap.c */ extern int cap_capable(const struct cred *cred, struct user_namespace *ns, @@ -193,8 +193,6 @@ 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); @@ -226,6 +224,18 @@ 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 */ @@ -378,10 +388,10 @@ int security_sb_clone_mnt_opts(const struct super_block *oldsb, int security_move_mount(const struct path *from_path, const struct path *to_path); int security_dentry_init_security(struct dentry *dentry, int mode, const struct qstr *name, - const char **xattr_name, void **ctx, - u32 *ctxlen); + const char **xattr_name, + struct lsm_context *lsmcxt); int security_dentry_create_files_as(struct dentry *dentry, int mode, - struct qstr *name, + const struct qstr *name, const struct cred *old, struct cred *new); int security_path_notify(const struct path *path, u64 mask, @@ -439,6 +449,10 @@ int security_inode_listxattr(struct dentry *dentry); 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 mnt_idmap *idmap, struct dentry *dentry); int security_inode_getsecurity(struct mnt_idmap *idmap, @@ -458,11 +472,17 @@ 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_backing_file_alloc(struct file *backing_file, + const struct file *user_file); +void security_backing_file_free(struct file *backing_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_backing_file(struct vm_area_struct *vma, + struct file *backing_file, + struct file *user_file); int security_mmap_addr(unsigned long addr); int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, unsigned long prot); @@ -475,7 +495,7 @@ int security_file_receive(struct file *file); 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, unsigned long clone_flags); +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); @@ -551,16 +571,16 @@ int security_setselfattr(unsigned int attr, struct lsm_ctx __user *ctx, 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_netlink_send(struct sock *sk, struct sk_buff *skb); int security_ismaclabel(const char *name); -int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); -int security_lsmprop_to_secctx(struct lsm_prop *prop, 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); @@ -852,14 +872,13 @@ static inline int security_dentry_init_security(struct dentry *dentry, int mode, const struct qstr *name, const char **xattr_name, - void **ctx, - u32 *ctxlen) + struct lsm_context *lsmcxt) { return -EOPNOTSUPP; } static inline int security_dentry_create_files_as(struct dentry *dentry, - int mode, struct qstr *name, + int mode, const struct qstr *name, const struct cred *old, struct cred *new) { @@ -1042,6 +1061,18 @@ 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 0; +} + static inline int security_inode_need_killpriv(struct dentry *dentry) { return cap_inode_need_killpriv(dentry); @@ -1116,6 +1147,15 @@ static inline void security_file_release(struct file *file) static inline void security_file_free(struct file *file) { } +static inline int security_backing_file_alloc(struct file *backing_file, + const struct file *user_file) +{ + return 0; +} + +static inline void security_backing_file_free(struct file *backing_file) +{ } + static inline int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { @@ -1135,6 +1175,13 @@ static inline int security_mmap_file(struct file *file, unsigned long prot, return 0; } +static inline int security_mmap_backing_file(struct vm_area_struct *vma, + struct file *backing_file, + struct file *user_file) +{ + return 0; +} + static inline int security_mmap_addr(unsigned long addr) { return cap_mmap_addr(addr); @@ -1191,7 +1238,7 @@ static inline int security_file_truncate(struct file *file) } static inline int security_task_alloc(struct task_struct *task, - unsigned long clone_flags) + u64 clone_flags) { return 0; } @@ -1516,24 +1563,19 @@ static inline int security_setprocattr(int lsmid, char *name, void *value, return -EINVAL; } -static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) -{ - return 0; -} - 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, - char **secdata, u32 *seclen) + struct lsm_context *cp, + int lsmid) { return -EOPNOTSUPP; } @@ -1545,7 +1587,7 @@ 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) { } @@ -1561,7 +1603,8 @@ 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; } @@ -1618,6 +1661,7 @@ static inline int security_watch_key(struct key *key) #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); @@ -1673,6 +1717,11 @@ int security_sctp_assoc_established(struct sctp_association *asoc, 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) @@ -1905,6 +1954,17 @@ static inline int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk) } #endif /* CONFIG_SECURITY_NETWORK */ +#if defined(CONFIG_SECURITY_NETWORK) && defined(CONFIG_SECURITY_PATH) + +int security_unix_find(const struct path *path, struct sock *other, int flags); + +#else /* CONFIG_SECURITY_NETWORK && CONFIG_SECURITY_PATH */ +static inline int security_unix_find(const struct path *path, struct sock *other, int flags) +{ + return 0; +} +#endif /* CONFIG_SECURITY_NETWORK && CONFIG_SECURITY_PATH */ + #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); @@ -2200,7 +2260,6 @@ struct dentry *securityfs_create_symlink(const char *name, const char *target, const struct inode_operations *iops); extern void securityfs_remove(struct dentry *dentry); -extern void securityfs_recursive_remove(struct dentry *dentry); #else /* CONFIG_SECURITYFS */ @@ -2238,14 +2297,14 @@ 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); +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); + 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); + 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); @@ -2254,7 +2313,7 @@ extern int security_bpf_token_cmd(const struct bpf_token *token, enum bpf_cmd cm 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) + unsigned int size, bool kernel) { return 0; } @@ -2270,7 +2329,7 @@ static inline int security_bpf_prog(struct bpf_prog *prog) } static inline int security_bpf_map_create(struct bpf_map *map, union bpf_attr *attr, - struct bpf_token *token) + struct bpf_token *token, bool kernel) { return 0; } @@ -2279,7 +2338,7 @@ 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) + struct bpf_token *token, bool kernel) { return 0; } @@ -2313,14 +2372,13 @@ struct perf_event_attr; struct perf_event; #ifdef CONFIG_SECURITY -extern int security_perf_event_open(struct perf_event_attr *attr, int type); +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 security_perf_event_open(struct perf_event_attr *attr, - int type) +static inline int security_perf_event_open(int type) { return 0; } @@ -2351,6 +2409,7 @@ static inline int security_perf_event_write(struct perf_event *event) 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) { @@ -2364,6 +2423,10 @@ 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 */ |