From 22098763a10d9c1340827fcf6edab66f153b27f0 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 13 Sep 2026 12:27:00 -0700 Subject: Merge tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing fixes from Steven Rostedt: - Don't destroy user event fields when removal fails User event fields are destroyed before the event is removed from visibility. But that can fail leaving the still visible event with no fields. Move the destroying of the fields to after the event is successfully removed from visibility. - Initialize function graph state is fork before calling copy_exec_state() For non-CLONE_VM forks, copy_exec_state() allocates a new task_exec_state. If that allocation fails, ftrace_graph_exit_task() will free the tasks ret_stack pointer. Since that pointer is still using the parent's ret_stack, it mistakenly frees the parent's pointer too. Call ftrace_graph_init() on the task first which will NULL out the new tasks's ret_stack and if the copy fails, it will not free anything. - Remove FGRAPH_MAX_INDEX The macro FGRAPH_MAX_INDEX was added but never used. Remove it. - Save ent_size in function graph printing of nested functions The function graph tracer needs to look at the next event to see if the next event is the return of the current function entry. If it is, it prints a single line: ktime_get(); Otherwise it prints it like a nested function: tick_nohz_irq_exit() { ktime_get(); kcpustat_irq_exit(); } In order to look at the next event, it must save the current event so that it has the information to print from it. It saves the event in the iterator descriptor called "ent". What it doesn't save is the ent_size of the event which is now used to know if the function graph arguments are to be printed. The peek doesn't save the size so the size used happens to be that of the size of the last event that was seen. Save the entry event size in the iterator descriptor so that the correct size is used. - Fix several errors with freeing data in the histogram code The histogram code had a lot of leaked or or incorrect accounting when failures happen. Correct them. - Fix histogram regression of .percent and .graph modifiers Up until 6.3 histogram values could have "percent" or "graph" modifiers that changed how they were printed. But a change that added restricting histograms values from being strings, stack traces and other modifiers inadvertently prevented them from using the percent and graph modifiers, which were legal use cases for values. Put back the percent and graph modifiers. - Fix various typos in the comments - Set the trace_clock before initializing a histogram with clock argument The histogram API allows the user to specific which trace clock to use via a "clock=" string. The histogram is set up first before the clock is checked. If the passed in clock is not valid, it exits without fully fixing up the histogram leaving it on the list and a use-after-free can trigger. Update the clock argument first and if it fails then exit gracefully before the histogram trigger is placed on any lists. - Restore :mod: trailer after parsing in ftrace_set_clr_event The function ftrace_set_clr_event() modifies the parse string and needs to put it back to what was passed in. It searches for ":mod:" via a strsep() but fails to put back the first ':' in the string. Add back the ':' in the passed in string. - Take trace_array reference when opening a tracer options file The options files are dynamically created and some tracers add their own options. When a tracer adds their own list of options, the trace_array holding them has an array to hold the list of options for each tracer. This array increases in size via a krealloc(), and the new entry gets a newly allocated array to hold the options of the new tracer being added. The element in each entry of the tracer's option array holds a pointer back to the trace_array, a pointer to the tracer it is associated to, a pointer to the flags of the option. The issue is that these arrays are freed when the trace_array is freed when its instance it represents is removed from the instances directory. There's a race that an open of one of these options files can happen when the instance is being removed. Add a new helper function to be called by the open function of the options file to iterate all existing trace_arrays under a lock and find the one that has the given option element in one of it's tracer arrays. If found, then update the associated trace_array's reference counter to keep it from being freed. If not found, have the open call return -ENODEV. - Disable interrupts when acquiring the lock in rb_wake_up_waiters() The function rb_wake_up_waiters() assumes it will be called in interrupt context and does not disable irqs when taking cpu_buffer->reader_lock, which can be called in hard interrupt context. The issue is in PREEMPT_RT, this function is called in thread context leaving this lock open to a deadlock. Take the lock with interrupts disabled. - Use rcu_assign_pointer() for tmp_ops filter hash The tmp_ops used in update_ftrace_direct_mod() assigns its filter_hash field directly, but that field is annotated as __rcu and sparse complains. Assign it with rcu_assign_pointer() - Fix use-after-free in enable_trigger_private_data_free() The trace_event_call is accessed through the event_trigger_data's trace_event_file pointer to put the trace_event_call on freeing. The issue is that the trace_event_file data may have been freed already causing a use-after-free. Add a field to the event_trigger_data that points directly to the trace_event_call so that it can decrement its reference directly without needing to go through the trace_event_file. - Fix accounting of buffer data remote headers trace_buffer_desc_size() and trace_remote_alloc_buffer() undercount the number of pages is needed for the asked for size as it doesn't take into account the meta data on each page. Add a helper function to do the calculation properly and use that in these functions. - Catch nr_page_va overflow in ring_buffer_desc sizing The number of pages per remote ring buffer is capped by ring_buffer_desc::nr_page_va (32 bits). A buffer_size large enough to overflow that field would silently allocate a descriptor smaller than what was asked for. - Do not resize the subbuf order if any per_cpu buffer is disabled The mmapping of ring buffers disables resizing the subbuffers, but it is done per-cpu whereas the subbuf size change is done for all the per_cpu buffers under the buffer->mutex. It could change the size of some while the mapping is happening on others. Have the resize of the subbuf order check all the per_cpu buffers under the lock to see if any of them is disabled before starting and causing an inconsistency between buffers that are being mapped. * tag 'trace-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (25 commits) ring-buffer: Check resize_disabled before publishing the new subbuf order tracing/remotes: Catch nr_page_va overflow in ring_buffer_desc sizing tracing/remotes: Account for ring buffer page header in size calculation tracing: Don't dereference trace_event_file in deferred trigger free ftrace: Use rcu_assign_pointer() for tmp_ops filter hash ring-buffer: Acquire the lock with irqsave in rb_wake_up_waiters() tracing: Take trace_array reference when opening a tracer options file tracing: Fix ring_buffer_read_page_size() kernel-doc tracing: Restore :mod: trailer after parsing in ftrace_set_clr_event() tracing: Fix memory corruption from a "STACKTRACE" histogram key tracing: Fix memory corruption from the histogram stacktrace modifier tracing: Undo the registration when enabling the histogram trigger fails tracing: Take the reference before publishing the named histogram trigger tracing: Set the trace clock before registering the histogram trigger tracing: Fix typo "preceeded" in comment tracing: Fix typo "availabe" in comment tracing: Let histogram values keep the percent and graph modifiers tracing: Keep the entry count when the histogram stats allocation fails tracing: Free histogram the field rejected for a bad modifier tracing: Free histogram the var ref when its initialization fails ... --- include/net/netlabel.h | 694 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 694 insertions(+) create mode 100644 include/net/netlabel.h (limited to 'include/net/netlabel.h') diff --git a/include/net/netlabel.h b/include/net/netlabel.h new file mode 100644 index 000000000..02914b1df --- /dev/null +++ b/include/net/netlabel.h @@ -0,0 +1,694 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * NetLabel System + * + * The NetLabel system manages static and dynamic label mappings for network + * protocols such as CIPSO and RIPSO. + * + * Author: Paul Moore + */ + +/* + * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008 + */ + +#ifndef _NETLABEL_H +#define _NETLABEL_H + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct cipso_v4_doi; +struct calipso_doi; + +/* + * NetLabel - A management interface for maintaining network packet label + * mapping tables for explicit packet labeling protocols. + * + * Network protocols such as CIPSO and RIPSO require a label translation layer + * to convert the label on the packet into something meaningful on the host + * machine. In the current Linux implementation these mapping tables live + * inside the kernel; NetLabel provides a mechanism for user space applications + * to manage these mapping tables. + * + * NetLabel makes use of the Generic NETLINK mechanism as a transport layer to + * send messages between kernel and user space. The general format of a + * NetLabel message is shown below: + * + * +-----------------+-------------------+--------- --- -- - + * | struct nlmsghdr | struct genlmsghdr | payload + * +-----------------+-------------------+--------- --- -- - + * + * The 'nlmsghdr' and 'genlmsghdr' structs should be dealt with like normal. + * The payload is dependent on the subsystem specified in the + * 'nlmsghdr->nlmsg_type' and should be defined below, supporting functions + * should be defined in the corresponding net/netlabel/netlabel_.h|c + * file. All of the fields in the NetLabel payload are NETLINK attributes, see + * the include/net/netlink.h file for more information on NETLINK attributes. + * + */ + +/* + * NetLabel NETLINK protocol + */ + +/* NetLabel NETLINK protocol version + * 1: initial version + * 2: added static labels for unlabeled connections + * 3: network selectors added to the NetLabel/LSM domain mapping and the + * CIPSO_V4_MAP_LOCAL CIPSO mapping was added + */ +#define NETLBL_PROTO_VERSION 3 + +/* NetLabel NETLINK types/families */ +#define NETLBL_NLTYPE_NONE 0 +#define NETLBL_NLTYPE_MGMT 1 +#define NETLBL_NLTYPE_MGMT_NAME "NLBL_MGMT" +#define NETLBL_NLTYPE_RIPSO 2 +#define NETLBL_NLTYPE_RIPSO_NAME "NLBL_RIPSO" +#define NETLBL_NLTYPE_CIPSOV4 3 +#define NETLBL_NLTYPE_CIPSOV4_NAME "NLBL_CIPSOv4" +#define NETLBL_NLTYPE_CIPSOV6 4 +#define NETLBL_NLTYPE_CIPSOV6_NAME "NLBL_CIPSOv6" +#define NETLBL_NLTYPE_UNLABELED 5 +#define NETLBL_NLTYPE_UNLABELED_NAME "NLBL_UNLBL" +#define NETLBL_NLTYPE_ADDRSELECT 6 +#define NETLBL_NLTYPE_ADDRSELECT_NAME "NLBL_ADRSEL" +#define NETLBL_NLTYPE_CALIPSO 7 +#define NETLBL_NLTYPE_CALIPSO_NAME "NLBL_CALIPSO" + +/* + * NetLabel - Kernel API for accessing the network packet label mappings. + * + * The following functions are provided for use by other kernel modules, + * specifically kernel LSM modules, to provide a consistent, transparent API + * for dealing with explicit packet labeling protocols such as CIPSO and + * RIPSO. The functions defined here are implemented in the + * net/netlabel/netlabel_kapi.c file. + * + */ + +/* NetLabel audit information */ +struct netlbl_audit { + struct lsm_prop prop; + kuid_t loginuid; + unsigned int sessionid; +}; + +/* + * LSM security attributes + */ + +/** + * struct netlbl_lsm_cache - NetLabel LSM security attribute cache + * @refcount: atomic reference counter + * @free: LSM supplied function to free the cache data + * @data: LSM supplied cache data + * + * Description: + * This structure is provided for LSMs which wish to make use of the NetLabel + * caching mechanism to store LSM specific data/attributes in the NetLabel + * cache. If the LSM has to perform a lot of translation from the NetLabel + * security attributes into it's own internal representation then the cache + * mechanism can provide a way to eliminate some or all of that translation + * overhead on a cache hit. + * + */ +struct netlbl_lsm_cache { + refcount_t refcount; + void (*free) (const void *data); + void *data; +}; + +/** + * struct netlbl_lsm_catmap - NetLabel LSM secattr category bitmap + * @startbit: the value of the lowest order bit in the bitmap + * @bitmap: the category bitmap + * @next: pointer to the next bitmap "node" or NULL + * + * Description: + * This structure is used to represent category bitmaps. Due to the large + * number of categories supported by most labeling protocols it is not + * practical to transfer a full bitmap internally so NetLabel adopts a sparse + * bitmap structure modeled after SELinux's ebitmap structure. + * The catmap bitmap field MUST be a power of two in length and large + * enough to hold at least 240 bits. Special care (i.e. check the code!) + * should be used when changing these values as the LSM implementation + * probably has functions which rely on the sizes of these types to speed + * processing. + * + */ +#define NETLBL_CATMAP_MAPCNT 4 +#define NETLBL_CATMAP_MAPSIZE (sizeof(u64) * 8) +#define NETLBL_CATMAP_SIZE (NETLBL_CATMAP_MAPSIZE * \ + NETLBL_CATMAP_MAPCNT) +#define NETLBL_CATMAP_BIT ((u64)0x01) +struct netlbl_lsm_catmap { + u32 startbit; + u64 bitmap[NETLBL_CATMAP_MAPCNT]; + struct netlbl_lsm_catmap *next; +}; + +/** + * struct netlbl_lsm_secattr - NetLabel LSM security attributes + * @flags: indicate structure attributes, see NETLBL_SECATTR_* + * @type: indicate the NLTYPE of the attributes + * @domain: the NetLabel LSM domain + * @cache: NetLabel LSM specific cache + * @attr.mls: MLS sensitivity label + * @attr.mls.cat: MLS category bitmap + * @attr.mls.lvl: MLS sensitivity level + * @attr.secid: LSM specific secid token + * + * Description: + * This structure is used to pass security attributes between NetLabel and the + * LSM modules. The flags field is used to specify which fields within the + * struct are valid and valid values can be created by bitwise OR'ing the + * NETLBL_SECATTR_* defines. The domain field is typically set by the LSM to + * specify domain specific configuration settings and is not usually used by + * NetLabel itself when returning security attributes to the LSM. + * + */ +struct netlbl_lsm_secattr { + u32 flags; + /* bitmap values for 'flags' */ +#define NETLBL_SECATTR_NONE 0x00000000 +#define NETLBL_SECATTR_DOMAIN 0x00000001 +#define NETLBL_SECATTR_DOMAIN_CPY (NETLBL_SECATTR_DOMAIN | \ + NETLBL_SECATTR_FREE_DOMAIN) +#define NETLBL_SECATTR_CACHE 0x00000002 +#define NETLBL_SECATTR_MLS_LVL 0x00000004 +#define NETLBL_SECATTR_MLS_CAT 0x00000008 +#define NETLBL_SECATTR_SECID 0x00000010 + /* bitmap meta-values for 'flags' */ +#define NETLBL_SECATTR_FREE_DOMAIN 0x01000000 +#define NETLBL_SECATTR_CACHEABLE (NETLBL_SECATTR_MLS_LVL | \ + NETLBL_SECATTR_MLS_CAT | \ + NETLBL_SECATTR_SECID) + u32 type; + char *domain; + struct netlbl_lsm_cache *cache; + struct { + struct { + struct netlbl_lsm_catmap *cat; + u32 lvl; + } mls; + u32 secid; + } attr; +}; + +/** + * struct netlbl_calipso_ops - NetLabel CALIPSO operations + * @doi_add: add a CALIPSO DOI + * @doi_free: free a CALIPSO DOI + * @doi_remove: remove a CALIPSO DOI + * @doi_getdef: returns a reference to a DOI + * @doi_putdef: releases a reference of a DOI + * @doi_walk: enumerate the DOI list + * @sock_getattr: retrieve the socket's attr + * @sock_setattr: set the socket's attr + * @sock_delattr: remove the socket's attr + * @req_setattr: set the req socket's attr + * @req_delattr: remove the req socket's attr + * @opt_getattr: retrieve attr from memory block + * @skbuff_optptr: find option in packet + * @skbuff_setattr: set the skbuff's attr + * @skbuff_delattr: remove the skbuff's attr + * @cache_invalidate: invalidate cache + * @cache_add: add cache entry + * + * Description: + * This structure is filled out by the CALIPSO engine and passed + * to the NetLabel core via a call to netlbl_calipso_ops_register(). + * It enables the CALIPSO engine (and hence IPv6) to be compiled + * as a module. + */ +struct netlbl_calipso_ops { + int (*doi_add)(struct calipso_doi *doi_def, + struct netlbl_audit *audit_info); + void (*doi_free)(struct calipso_doi *doi_def); + int (*doi_remove)(u32 doi, struct netlbl_audit *audit_info); + struct calipso_doi *(*doi_getdef)(u32 doi); + void (*doi_putdef)(struct calipso_doi *doi_def); + int (*doi_walk)(u32 *skip_cnt, + int (*callback)(struct calipso_doi *doi_def, void *arg), + void *cb_arg); + int (*sock_getattr)(struct sock *sk, + struct netlbl_lsm_secattr *secattr); + int (*sock_setattr)(struct sock *sk, + const struct calipso_doi *doi_def, + const struct netlbl_lsm_secattr *secattr); + void (*sock_delattr)(struct sock *sk); + int (*req_setattr)(struct request_sock *req, + const struct calipso_doi *doi_def, + const struct netlbl_lsm_secattr *secattr); + void (*req_delattr)(struct request_sock *req); + int (*opt_getattr)(const unsigned char *calipso, + struct netlbl_lsm_secattr *secattr); + unsigned char *(*skbuff_optptr)(const struct sk_buff *skb); + int (*skbuff_setattr)(struct sk_buff *skb, + const struct calipso_doi *doi_def, + const struct netlbl_lsm_secattr *secattr); + int (*skbuff_delattr)(struct sk_buff *skb); + void (*cache_invalidate)(void); + int (*cache_add)(const unsigned char *calipso_ptr, + const struct netlbl_lsm_secattr *secattr); +}; + +/* + * LSM security attribute operations (inline) + */ + +/** + * netlbl_secattr_cache_alloc - Allocate and initialize a secattr cache + * @flags: the memory allocation flags + * + * Description: + * Allocate and initialize a netlbl_lsm_cache structure. Returns a pointer + * on success, NULL on failure. + * + */ +static inline struct netlbl_lsm_cache *netlbl_secattr_cache_alloc_noprof(gfp_t flags) +{ + struct netlbl_lsm_cache *cache; + + cache = kzalloc_noprof(sizeof(*cache), flags); + if (cache) + refcount_set(&cache->refcount, 1); + return cache; +} +#define netlbl_secattr_cache_alloc(...) \ + alloc_hooks(netlbl_secattr_cache_alloc_noprof(__VA_ARGS__)) + +/** + * netlbl_secattr_cache_free - Frees a netlbl_lsm_cache struct + * @cache: the struct to free + * + * Description: + * Frees @secattr including all of the internal buffers. + * + */ +static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache) +{ + if (!refcount_dec_and_test(&cache->refcount)) + return; + + if (cache->free) + cache->free(cache->data); + kfree(cache); +} + +/** + * netlbl_catmap_alloc - Allocate a LSM secattr catmap + * @flags: memory allocation flags + * + * Description: + * Allocate memory for a LSM secattr catmap, returns a pointer on success, NULL + * on failure. + * + */ +static inline struct netlbl_lsm_catmap *netlbl_catmap_alloc_noprof(gfp_t flags) +{ + return kzalloc_noprof(sizeof(struct netlbl_lsm_catmap), flags); +} +#define netlbl_catmap_alloc(...) alloc_hooks(netlbl_catmap_alloc_noprof(__VA_ARGS__)) + +/** + * netlbl_catmap_free - Free a LSM secattr catmap + * @catmap: the category bitmap + * + * Description: + * Free a LSM secattr catmap. + * + */ +static inline void netlbl_catmap_free(struct netlbl_lsm_catmap *catmap) +{ + struct netlbl_lsm_catmap *iter; + + while (catmap) { + iter = catmap; + catmap = catmap->next; + kfree(iter); + } +} + +/** + * netlbl_secattr_init - Initialize a netlbl_lsm_secattr struct + * @secattr: the struct to initialize + * + * Description: + * Initialize an already allocated netlbl_lsm_secattr struct. + * + */ +static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr) +{ + memset(secattr, 0, sizeof(*secattr)); +} + +/** + * netlbl_secattr_destroy - Clears a netlbl_lsm_secattr struct + * @secattr: the struct to clear + * + * Description: + * Destroys the @secattr struct, including freeing all of the internal buffers. + * The struct must be reset with a call to netlbl_secattr_init() before reuse. + * + */ +static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr) +{ + if (secattr->flags & NETLBL_SECATTR_FREE_DOMAIN) + kfree(secattr->domain); + if (secattr->flags & NETLBL_SECATTR_CACHE) + netlbl_secattr_cache_free(secattr->cache); + if (secattr->flags & NETLBL_SECATTR_MLS_CAT) + netlbl_catmap_free(secattr->attr.mls.cat); +} + +/** + * netlbl_secattr_alloc - Allocate and initialize a netlbl_lsm_secattr struct + * @flags: the memory allocation flags + * + * Description: + * Allocate and initialize a netlbl_lsm_secattr struct. Returns a valid + * pointer on success, or NULL on failure. + * + */ +static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc_noprof(gfp_t flags) +{ + return kzalloc_noprof(sizeof(struct netlbl_lsm_secattr), flags); +} +#define netlbl_secattr_alloc(...) alloc_hooks(netlbl_secattr_alloc_noprof(__VA_ARGS__)) + +/** + * netlbl_secattr_free - Frees a netlbl_lsm_secattr struct + * @secattr: the struct to free + * + * Description: + * Frees @secattr including all of the internal buffers. + * + */ +static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr) +{ + netlbl_secattr_destroy(secattr); + kfree(secattr); +} + +#ifdef CONFIG_NETLABEL +/* + * LSM configuration operations + */ +int netlbl_cfg_map_del(const char *domain, + u16 family, + const void *addr, + const void *mask, + struct netlbl_audit *audit_info); +int netlbl_cfg_unlbl_map_add(const char *domain, + u16 family, + const void *addr, + const void *mask, + struct netlbl_audit *audit_info); +int netlbl_cfg_unlbl_static_add(struct net *net, + const char *dev_name, + const void *addr, + const void *mask, + u16 family, + u32 secid, + struct netlbl_audit *audit_info); +int netlbl_cfg_unlbl_static_del(struct net *net, + const char *dev_name, + const void *addr, + const void *mask, + u16 family, + struct netlbl_audit *audit_info); +int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def, + struct netlbl_audit *audit_info); +void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info); +int netlbl_cfg_cipsov4_map_add(u32 doi, + const char *domain, + const struct in_addr *addr, + const struct in_addr *mask, + struct netlbl_audit *audit_info); +int netlbl_cfg_calipso_add(struct calipso_doi *doi_def, + struct netlbl_audit *audit_info); +void netlbl_cfg_calipso_del(u32 doi, struct netlbl_audit *audit_info); +int netlbl_cfg_calipso_map_add(u32 doi, + const char *domain, + const struct in6_addr *addr, + const struct in6_addr *mask, + struct netlbl_audit *audit_info); +/* + * LSM security attribute operations + */ +int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset); +int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset); +int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap, + u32 *offset, + unsigned long *bitmap); +int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap, + u32 bit, + gfp_t flags); +int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap, + u32 start, + u32 end, + gfp_t flags); +int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap, + u32 offset, + unsigned long bitmap, + gfp_t flags); + +/* Bitmap functions + */ +int netlbl_bitmap_walk(const unsigned char *bitmap, u32 bitmap_len, + u32 offset, u8 state); +void netlbl_bitmap_setbit(unsigned char *bitmap, u32 bit, u8 state); + +/* + * LSM protocol operations (NetLabel LSM/kernel API) + */ +int netlbl_enabled(void); +int netlbl_sock_setattr(struct sock *sk, + u16 family, + const struct netlbl_lsm_secattr *secattr, + bool sk_locked); +void netlbl_sock_delattr(struct sock *sk); +int netlbl_sock_getattr(struct sock *sk, + struct netlbl_lsm_secattr *secattr); +int netlbl_conn_setattr(struct sock *sk, + struct sockaddr *addr, + const struct netlbl_lsm_secattr *secattr); +int netlbl_req_setattr(struct request_sock *req, + const struct netlbl_lsm_secattr *secattr); +void netlbl_req_delattr(struct request_sock *req); +int netlbl_skbuff_setattr(struct sk_buff *skb, + u16 family, + const struct netlbl_lsm_secattr *secattr); +int netlbl_skbuff_getattr(const struct sk_buff *skb, + u16 family, + struct netlbl_lsm_secattr *secattr); +void netlbl_skbuff_err(struct sk_buff *skb, u16 family, int error, int gateway); +bool netlbl_sk_lock_check(struct sock *sk); + +/* + * LSM label mapping cache operations + */ +void netlbl_cache_invalidate(void); +int netlbl_cache_add(const struct sk_buff *skb, u16 family, + const struct netlbl_lsm_secattr *secattr); + +/* + * Protocol engine operations + */ +struct audit_buffer *netlbl_audit_start(int type, + struct netlbl_audit *audit_info); +#else +static inline int netlbl_cfg_map_del(const char *domain, + u16 family, + const void *addr, + const void *mask, + struct netlbl_audit *audit_info) +{ + return -ENOSYS; +} +static inline int netlbl_cfg_unlbl_map_add(const char *domain, + u16 family, + void *addr, + void *mask, + struct netlbl_audit *audit_info) +{ + return -ENOSYS; +} +static inline int netlbl_cfg_unlbl_static_add(struct net *net, + const char *dev_name, + const void *addr, + const void *mask, + u16 family, + u32 secid, + struct netlbl_audit *audit_info) +{ + return -ENOSYS; +} +static inline int netlbl_cfg_unlbl_static_del(struct net *net, + const char *dev_name, + const void *addr, + const void *mask, + u16 family, + struct netlbl_audit *audit_info) +{ + return -ENOSYS; +} +static inline int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def, + struct netlbl_audit *audit_info) +{ + return -ENOSYS; +} +static inline void netlbl_cfg_cipsov4_del(u32 doi, + struct netlbl_audit *audit_info) +{ + return; +} +static inline int netlbl_cfg_cipsov4_map_add(u32 doi, + const char *domain, + const struct in_addr *addr, + const struct in_addr *mask, + struct netlbl_audit *audit_info) +{ + return -ENOSYS; +} +static inline int netlbl_cfg_calipso_add(struct calipso_doi *doi_def, + struct netlbl_audit *audit_info) +{ + return -ENOSYS; +} +static inline void netlbl_cfg_calipso_del(u32 doi, + struct netlbl_audit *audit_info) +{ + return; +} +static inline int netlbl_cfg_calipso_map_add(u32 doi, + const char *domain, + const struct in6_addr *addr, + const struct in6_addr *mask, + struct netlbl_audit *audit_info) +{ + return -ENOSYS; +} +static inline int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, + u32 offset) +{ + return -ENOENT; +} +static inline int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, + u32 offset) +{ + return -ENOENT; +} +static inline int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap, + u32 *offset, + unsigned long *bitmap) +{ + return 0; +} +static inline int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap, + u32 bit, + gfp_t flags) +{ + return 0; +} +static inline int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap, + u32 start, + u32 end, + gfp_t flags) +{ + return 0; +} +static inline int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap, + u32 offset, + unsigned long bitmap, + gfp_t flags) +{ + return 0; +} +static inline int netlbl_enabled(void) +{ + return 0; +} +static inline int netlbl_sock_setattr(struct sock *sk, + u16 family, + const struct netlbl_lsm_secattr *secattr, + bool sk_locked) +{ + return -ENOSYS; +} +static inline void netlbl_sock_delattr(struct sock *sk) +{ +} +static inline int netlbl_sock_getattr(struct sock *sk, + struct netlbl_lsm_secattr *secattr) +{ + return -ENOSYS; +} +static inline int netlbl_conn_setattr(struct sock *sk, + struct sockaddr *addr, + const struct netlbl_lsm_secattr *secattr) +{ + return -ENOSYS; +} +static inline int netlbl_req_setattr(struct request_sock *req, + const struct netlbl_lsm_secattr *secattr) +{ + return -ENOSYS; +} +static inline void netlbl_req_delattr(struct request_sock *req) +{ + return; +} +static inline int netlbl_skbuff_setattr(struct sk_buff *skb, + u16 family, + const struct netlbl_lsm_secattr *secattr) +{ + return -ENOSYS; +} +static inline int netlbl_skbuff_getattr(const struct sk_buff *skb, + u16 family, + struct netlbl_lsm_secattr *secattr) +{ + return -ENOSYS; +} +static inline void netlbl_skbuff_err(struct sk_buff *skb, + int error, + int gateway) +{ + return; +} +static inline void netlbl_cache_invalidate(void) +{ + return; +} +static inline int netlbl_cache_add(const struct sk_buff *skb, u16 family, + const struct netlbl_lsm_secattr *secattr) +{ + return 0; +} +static inline struct audit_buffer *netlbl_audit_start(int type, + struct netlbl_audit *audit_info) +{ + return NULL; +} + +static inline bool netlbl_sk_lock_check(struct sock *sk) +{ + return true; +} +#endif /* CONFIG_NETLABEL */ + +const struct netlbl_calipso_ops * +netlbl_calipso_ops_register(const struct netlbl_calipso_ops *ops); + +#endif /* _NETLABEL_H */ -- cgit v1.3.1