| Message ID | 20171230171926.15690-1-richard_c_haines@btinternet.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
On Sat, Dec 30, 2017 at 05:19:26PM +0000, Richard Haines wrote: > The SCTP security hooks are explained in: > Documentation/security/LSM-sctp.rst > > Signed-off-by: Richard Haines <richard_c_haines@btinternet.com> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> > --- > Documentation/security/LSM-sctp.rst | 175 ++++++++++++++++++++++++++++++++++++ > include/linux/lsm_hooks.h | 36 ++++++++ > include/linux/security.h | 25 ++++++ > security/security.c | 22 +++++ > 4 files changed, 258 insertions(+) > create mode 100644 Documentation/security/LSM-sctp.rst > > diff --git a/Documentation/security/LSM-sctp.rst b/Documentation/security/LSM-sctp.rst > new file mode 100644 > index 0000000..6e5a392 > --- /dev/null > +++ b/Documentation/security/LSM-sctp.rst > @@ -0,0 +1,175 @@ > +SCTP LSM Support > +================ > + > +For security module support, three SCTP specific hooks have been implemented:: > + > + security_sctp_assoc_request() > + security_sctp_bind_connect() > + security_sctp_sk_clone() > + > +Also the following security hook has been utilised:: > + > + security_inet_conn_established() > + > +The usage of these hooks are described below with the SELinux implementation > +described in ``Documentation/security/SELinux-sctp.rst`` > + > + > +security_sctp_assoc_request() > +----------------------------- > +Passes the ``@ep`` and ``@chunk->skb`` of the association INIT packet to the > +security module. Returns 0 on success, error on failure. > +:: > + > + @ep - pointer to sctp endpoint structure. > + @skb - pointer to skbuff of association packet. > + > + > +security_sctp_bind_connect() > +----------------------------- > +Passes one or more ipv4/ipv6 addresses to the security module for validation > +based on the ``@optname`` that will result in either a bind or connect > +service as shown in the permission check tables below. > +Returns 0 on success, error on failure. > +:: > + > + @sk - Pointer to sock structure. > + @optname - Name of the option to validate. > + @address - One or more ipv4 / ipv6 addresses. > + @addrlen - The total length of address(s). This is calculated on each > + ipv4 or ipv6 address using sizeof(struct sockaddr_in) or > + sizeof(struct sockaddr_in6). > + > + ------------------------------------------------------------------ > + | BIND Type Checks | > + | @optname | @address contains | > + |----------------------------|-----------------------------------| > + | SCTP_SOCKOPT_BINDX_ADD | One or more ipv4 / ipv6 addresses | > + | SCTP_PRIMARY_ADDR | Single ipv4 or ipv6 address | > + | SCTP_SET_PEER_PRIMARY_ADDR | Single ipv4 or ipv6 address | > + ------------------------------------------------------------------ > + > + ------------------------------------------------------------------ > + | CONNECT Type Checks | > + | @optname | @address contains | > + |----------------------------|-----------------------------------| > + | SCTP_SOCKOPT_CONNECTX | One or more ipv4 / ipv6 addresses | > + | SCTP_PARAM_ADD_IP | One or more ipv4 / ipv6 addresses | > + | SCTP_SENDMSG_CONNECT | Single ipv4 or ipv6 address | > + | SCTP_PARAM_SET_PRIMARY | Single ipv4 or ipv6 address | > + ------------------------------------------------------------------ > + > +A summary of the ``@optname`` entries is as follows:: > + > + SCTP_SOCKOPT_BINDX_ADD - Allows additional bind addresses to be > + associated after (optionally) calling > + bind(3). > + sctp_bindx(3) adds a set of bind > + addresses on a socket. > + > + SCTP_SOCKOPT_CONNECTX - Allows the allocation of multiple > + addresses for reaching a peer > + (multi-homed). > + sctp_connectx(3) initiates a connection > + on an SCTP socket using multiple > + destination addresses. > + > + SCTP_SENDMSG_CONNECT - Initiate a connection that is generated by a > + sendmsg(2) or sctp_sendmsg(3) on a new asociation. > + > + SCTP_PRIMARY_ADDR - Set local primary address. > + > + SCTP_SET_PEER_PRIMARY_ADDR - Request peer sets address as > + association primary. > + > + SCTP_PARAM_ADD_IP - These are used when Dynamic Address > + SCTP_PARAM_SET_PRIMARY - Reconfiguration is enabled as explained below. > + > + > +To support Dynamic Address Reconfiguration the following parameters must be > +enabled on both endpoints (or use the appropriate **setsockopt**\(2)):: > + > + /proc/sys/net/sctp/addip_enable > + /proc/sys/net/sctp/addip_noauth_enable > + > +then the following *_PARAM_*'s are sent to the peer in an > +ASCONF chunk when the corresponding ``@optname``'s are present:: > + > + @optname ASCONF Parameter > + ---------- ------------------ > + SCTP_SOCKOPT_BINDX_ADD -> SCTP_PARAM_ADD_IP > + SCTP_SET_PEER_PRIMARY_ADDR -> SCTP_PARAM_SET_PRIMARY > + > + > +security_sctp_sk_clone() > +------------------------- > +Called whenever a new socket is created by **accept**\(2) > +(i.e. a TCP style socket) or when a socket is 'peeled off' e.g userspace > +calls **sctp_peeloff**\(3). > +:: > + > + @ep - pointer to current sctp endpoint structure. > + @sk - pointer to current sock structure. > + @sk - pointer to new sock structure. > + > + > +security_inet_conn_established() > +--------------------------------- > +Called when a COOKIE ACK is received:: > + > + @sk - pointer to sock structure. > + @skb - pointer to skbuff of the COOKIE ACK packet. > + > + > +Security Hooks used for Association Establishment > +================================================= > +The following diagram shows the use of ``security_sctp_bind_connect()``, > +``security_sctp_assoc_request()``, ``security_inet_conn_established()`` when > +establishing an association. > +:: > + > + SCTP endpoint "A" SCTP endpoint "Z" > + ================= ================= > + sctp_sf_do_prm_asoc() > + Association setup can be initiated > + by a connect(2), sctp_connectx(3), > + sendmsg(2) or sctp_sendmsg(3). > + These will result in a call to > + security_sctp_bind_connect() to > + initiate an association to > + SCTP peer endpoint "Z". > + INIT ---------------------------------------------> > + sctp_sf_do_5_1B_init() > + Respond to an INIT chunk. > + SCTP peer endpoint "A" is > + asking for an association. Call > + security_sctp_assoc_request() > + to set the peer label if first > + association. > + If not first association, check > + whether allowed, IF so send: > + <----------------------------------------------- INIT ACK > + | ELSE audit event and silently > + | discard the packet. > + | > + COOKIE ECHO ------------------------------------------> > + | > + | > + | > + <------------------------------------------- COOKIE ACK > + | | > + sctp_sf_do_5_1E_ca | > + Call security_inet_conn_established() | > + to set the peer label. | > + | | > + | If SCTP_SOCKET_TCP or peeled off > + | socket security_sctp_sk_clone() is > + | called to clone the new socket. > + | | > + ESTABLISHED ESTABLISHED > + | | > + ------------------------------------------------------------------ > + | Association Established | > + ------------------------------------------------------------------ > + > + > diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h > index c925812..647e700 100644 > --- a/include/linux/lsm_hooks.h > +++ b/include/linux/lsm_hooks.h > @@ -906,6 +906,33 @@ > * associated with the TUN device's security structure. > * @security pointer to the TUN devices's security structure. > * > + * Security hooks for SCTP > + * > + * @sctp_assoc_request: > + * Passes the @ep and @chunk->skb of the association INIT packet to > + * the security module. > + * @ep pointer to sctp endpoint structure. > + * @skb pointer to skbuff of association packet. > + * Return 0 on success, error on failure. > + * @sctp_bind_connect: > + * Validiate permissions required for each address associated with sock > + * @sk. Depending on @optname, the addresses will be treated as either > + * for a connect or bind service. The @addrlen is calculated on each > + * ipv4 and ipv6 address using sizeof(struct sockaddr_in) or > + * sizeof(struct sockaddr_in6). > + * @sk pointer to sock structure. > + * @optname name of the option to validate. > + * @address list containing one or more ipv4/ipv6 addresses. > + * @addrlen total length of address(s). > + * Return 0 on success, error on failure. > + * @sctp_sk_clone: > + * Called whenever a new socket is created by accept(2) (i.e. a TCP > + * style socket) or when a socket is 'peeled off' e.g userspace > + * calls sctp_peeloff(3). > + * @ep pointer to current sctp endpoint structure. > + * @sk pointer to current sock structure. > + * @sk pointer to new sock structure. > + * > * Security hooks for Infiniband > * > * @ib_pkey_access: > @@ -1631,6 +1658,12 @@ union security_list_options { > int (*tun_dev_attach_queue)(void *security); > int (*tun_dev_attach)(struct sock *sk, void *security); > int (*tun_dev_open)(void *security); > + int (*sctp_assoc_request)(struct sctp_endpoint *ep, > + struct sk_buff *skb); > + int (*sctp_bind_connect)(struct sock *sk, int optname, > + struct sockaddr *address, int addrlen); > + void (*sctp_sk_clone)(struct sctp_endpoint *ep, struct sock *sk, > + struct sock *newsk); > #endif /* CONFIG_SECURITY_NETWORK */ > > #ifdef CONFIG_SECURITY_INFINIBAND > @@ -1869,6 +1902,9 @@ struct security_hook_heads { > struct list_head tun_dev_attach_queue; > struct list_head tun_dev_attach; > struct list_head tun_dev_open; > + struct list_head sctp_assoc_request; > + struct list_head sctp_bind_connect; > + struct list_head sctp_sk_clone; > #endif /* CONFIG_SECURITY_NETWORK */ > #ifdef CONFIG_SECURITY_INFINIBAND > struct list_head ib_pkey_access; > diff --git a/include/linux/security.h b/include/linux/security.h > index 3107754..2e5ec5c 100644 > --- a/include/linux/security.h > +++ b/include/linux/security.h > @@ -115,6 +115,7 @@ struct xfrm_policy; > struct xfrm_state; > struct xfrm_user_sec_ctx; > struct seq_file; > +struct sctp_endpoint; > > #ifdef CONFIG_MMU > extern unsigned long mmap_min_addr; > @@ -1229,6 +1230,11 @@ 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); > +int security_sctp_assoc_request(struct sctp_endpoint *ep, 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_endpoint *ep, struct sock *sk, > + struct sock *newsk); > > #else /* CONFIG_SECURITY_NETWORK */ > static inline int security_unix_stream_connect(struct sock *sock, > @@ -1421,6 +1427,25 @@ static inline int security_tun_dev_open(void *security) > { > return 0; > } > + > +static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, > + 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_endpoint *ep, > + struct sock *sk, > + struct sock *newsk) > +{ > +} > #endif /* CONFIG_SECURITY_NETWORK */ > > #ifdef CONFIG_SECURITY_INFINIBAND > diff --git a/security/security.c b/security/security.c > index 4bf0f57..1400678 100644 > --- a/security/security.c > +++ b/security/security.c > @@ -1472,6 +1472,7 @@ void security_inet_conn_established(struct sock *sk, > { > call_void_hook(inet_conn_established, sk, skb); > } > +EXPORT_SYMBOL(security_inet_conn_established); > > int security_secmark_relabel_packet(u32 secid) > { > @@ -1527,6 +1528,27 @@ int security_tun_dev_open(void *security) > } > EXPORT_SYMBOL(security_tun_dev_open); > > +int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) > +{ > + return call_int_hook(sctp_assoc_request, 0, ep, skb); > +} > +EXPORT_SYMBOL(security_sctp_assoc_request); > + > +int security_sctp_bind_connect(struct sock *sk, int optname, > + struct sockaddr *address, int addrlen) > +{ > + return call_int_hook(sctp_bind_connect, 0, sk, optname, > + address, addrlen); > +} > +EXPORT_SYMBOL(security_sctp_bind_connect); > + > +void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, > + struct sock *newsk) > +{ > + call_void_hook(sctp_sk_clone, ep, sk, newsk); > +} > +EXPORT_SYMBOL(security_sctp_sk_clone); > + > #endif /* CONFIG_SECURITY_NETWORK */ > > #ifdef CONFIG_SECURITY_INFINIBAND > -- > 2.14.3 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-sctp" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
diff --git a/Documentation/security/LSM-sctp.rst b/Documentation/security/LSM-sctp.rst new file mode 100644 index 0000000..6e5a392 --- /dev/null +++ b/Documentation/security/LSM-sctp.rst @@ -0,0 +1,175 @@ +SCTP LSM Support +================ + +For security module support, three SCTP specific hooks have been implemented:: + + security_sctp_assoc_request() + security_sctp_bind_connect() + security_sctp_sk_clone() + +Also the following security hook has been utilised:: + + security_inet_conn_established() + +The usage of these hooks are described below with the SELinux implementation +described in ``Documentation/security/SELinux-sctp.rst`` + + +security_sctp_assoc_request() +----------------------------- +Passes the ``@ep`` and ``@chunk->skb`` of the association INIT packet to the +security module. Returns 0 on success, error on failure. +:: + + @ep - pointer to sctp endpoint structure. + @skb - pointer to skbuff of association packet. + + +security_sctp_bind_connect() +----------------------------- +Passes one or more ipv4/ipv6 addresses to the security module for validation +based on the ``@optname`` that will result in either a bind or connect +service as shown in the permission check tables below. +Returns 0 on success, error on failure. +:: + + @sk - Pointer to sock structure. + @optname - Name of the option to validate. + @address - One or more ipv4 / ipv6 addresses. + @addrlen - The total length of address(s). This is calculated on each + ipv4 or ipv6 address using sizeof(struct sockaddr_in) or + sizeof(struct sockaddr_in6). + + ------------------------------------------------------------------ + | BIND Type Checks | + | @optname | @address contains | + |----------------------------|-----------------------------------| + | SCTP_SOCKOPT_BINDX_ADD | One or more ipv4 / ipv6 addresses | + | SCTP_PRIMARY_ADDR | Single ipv4 or ipv6 address | + | SCTP_SET_PEER_PRIMARY_ADDR | Single ipv4 or ipv6 address | + ------------------------------------------------------------------ + + ------------------------------------------------------------------ + | CONNECT Type Checks | + | @optname | @address contains | + |----------------------------|-----------------------------------| + | SCTP_SOCKOPT_CONNECTX | One or more ipv4 / ipv6 addresses | + | SCTP_PARAM_ADD_IP | One or more ipv4 / ipv6 addresses | + | SCTP_SENDMSG_CONNECT | Single ipv4 or ipv6 address | + | SCTP_PARAM_SET_PRIMARY | Single ipv4 or ipv6 address | + ------------------------------------------------------------------ + +A summary of the ``@optname`` entries is as follows:: + + SCTP_SOCKOPT_BINDX_ADD - Allows additional bind addresses to be + associated after (optionally) calling + bind(3). + sctp_bindx(3) adds a set of bind + addresses on a socket. + + SCTP_SOCKOPT_CONNECTX - Allows the allocation of multiple + addresses for reaching a peer + (multi-homed). + sctp_connectx(3) initiates a connection + on an SCTP socket using multiple + destination addresses. + + SCTP_SENDMSG_CONNECT - Initiate a connection that is generated by a + sendmsg(2) or sctp_sendmsg(3) on a new asociation. + + SCTP_PRIMARY_ADDR - Set local primary address. + + SCTP_SET_PEER_PRIMARY_ADDR - Request peer sets address as + association primary. + + SCTP_PARAM_ADD_IP - These are used when Dynamic Address + SCTP_PARAM_SET_PRIMARY - Reconfiguration is enabled as explained below. + + +To support Dynamic Address Reconfiguration the following parameters must be +enabled on both endpoints (or use the appropriate **setsockopt**\(2)):: + + /proc/sys/net/sctp/addip_enable + /proc/sys/net/sctp/addip_noauth_enable + +then the following *_PARAM_*'s are sent to the peer in an +ASCONF chunk when the corresponding ``@optname``'s are present:: + + @optname ASCONF Parameter + ---------- ------------------ + SCTP_SOCKOPT_BINDX_ADD -> SCTP_PARAM_ADD_IP + SCTP_SET_PEER_PRIMARY_ADDR -> SCTP_PARAM_SET_PRIMARY + + +security_sctp_sk_clone() +------------------------- +Called whenever a new socket is created by **accept**\(2) +(i.e. a TCP style socket) or when a socket is 'peeled off' e.g userspace +calls **sctp_peeloff**\(3). +:: + + @ep - pointer to current sctp endpoint structure. + @sk - pointer to current sock structure. + @sk - pointer to new sock structure. + + +security_inet_conn_established() +--------------------------------- +Called when a COOKIE ACK is received:: + + @sk - pointer to sock structure. + @skb - pointer to skbuff of the COOKIE ACK packet. + + +Security Hooks used for Association Establishment +================================================= +The following diagram shows the use of ``security_sctp_bind_connect()``, +``security_sctp_assoc_request()``, ``security_inet_conn_established()`` when +establishing an association. +:: + + SCTP endpoint "A" SCTP endpoint "Z" + ================= ================= + sctp_sf_do_prm_asoc() + Association setup can be initiated + by a connect(2), sctp_connectx(3), + sendmsg(2) or sctp_sendmsg(3). + These will result in a call to + security_sctp_bind_connect() to + initiate an association to + SCTP peer endpoint "Z". + INIT ---------------------------------------------> + sctp_sf_do_5_1B_init() + Respond to an INIT chunk. + SCTP peer endpoint "A" is + asking for an association. Call + security_sctp_assoc_request() + to set the peer label if first + association. + If not first association, check + whether allowed, IF so send: + <----------------------------------------------- INIT ACK + | ELSE audit event and silently + | discard the packet. + | + COOKIE ECHO ------------------------------------------> + | + | + | + <------------------------------------------- COOKIE ACK + | | + sctp_sf_do_5_1E_ca | + Call security_inet_conn_established() | + to set the peer label. | + | | + | If SCTP_SOCKET_TCP or peeled off + | socket security_sctp_sk_clone() is + | called to clone the new socket. + | | + ESTABLISHED ESTABLISHED + | | + ------------------------------------------------------------------ + | Association Established | + ------------------------------------------------------------------ + + diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h index c925812..647e700 100644 --- a/include/linux/lsm_hooks.h +++ b/include/linux/lsm_hooks.h @@ -906,6 +906,33 @@ * associated with the TUN device's security structure. * @security pointer to the TUN devices's security structure. * + * Security hooks for SCTP + * + * @sctp_assoc_request: + * Passes the @ep and @chunk->skb of the association INIT packet to + * the security module. + * @ep pointer to sctp endpoint structure. + * @skb pointer to skbuff of association packet. + * Return 0 on success, error on failure. + * @sctp_bind_connect: + * Validiate permissions required for each address associated with sock + * @sk. Depending on @optname, the addresses will be treated as either + * for a connect or bind service. The @addrlen is calculated on each + * ipv4 and ipv6 address using sizeof(struct sockaddr_in) or + * sizeof(struct sockaddr_in6). + * @sk pointer to sock structure. + * @optname name of the option to validate. + * @address list containing one or more ipv4/ipv6 addresses. + * @addrlen total length of address(s). + * Return 0 on success, error on failure. + * @sctp_sk_clone: + * Called whenever a new socket is created by accept(2) (i.e. a TCP + * style socket) or when a socket is 'peeled off' e.g userspace + * calls sctp_peeloff(3). + * @ep pointer to current sctp endpoint structure. + * @sk pointer to current sock structure. + * @sk pointer to new sock structure. + * * Security hooks for Infiniband * * @ib_pkey_access: @@ -1631,6 +1658,12 @@ union security_list_options { int (*tun_dev_attach_queue)(void *security); int (*tun_dev_attach)(struct sock *sk, void *security); int (*tun_dev_open)(void *security); + int (*sctp_assoc_request)(struct sctp_endpoint *ep, + struct sk_buff *skb); + int (*sctp_bind_connect)(struct sock *sk, int optname, + struct sockaddr *address, int addrlen); + void (*sctp_sk_clone)(struct sctp_endpoint *ep, struct sock *sk, + struct sock *newsk); #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_INFINIBAND @@ -1869,6 +1902,9 @@ struct security_hook_heads { struct list_head tun_dev_attach_queue; struct list_head tun_dev_attach; struct list_head tun_dev_open; + struct list_head sctp_assoc_request; + struct list_head sctp_bind_connect; + struct list_head sctp_sk_clone; #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_INFINIBAND struct list_head ib_pkey_access; diff --git a/include/linux/security.h b/include/linux/security.h index 3107754..2e5ec5c 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -115,6 +115,7 @@ struct xfrm_policy; struct xfrm_state; struct xfrm_user_sec_ctx; struct seq_file; +struct sctp_endpoint; #ifdef CONFIG_MMU extern unsigned long mmap_min_addr; @@ -1229,6 +1230,11 @@ 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); +int security_sctp_assoc_request(struct sctp_endpoint *ep, 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_endpoint *ep, struct sock *sk, + struct sock *newsk); #else /* CONFIG_SECURITY_NETWORK */ static inline int security_unix_stream_connect(struct sock *sock, @@ -1421,6 +1427,25 @@ static inline int security_tun_dev_open(void *security) { return 0; } + +static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, + 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_endpoint *ep, + struct sock *sk, + struct sock *newsk) +{ +} #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_INFINIBAND diff --git a/security/security.c b/security/security.c index 4bf0f57..1400678 100644 --- a/security/security.c +++ b/security/security.c @@ -1472,6 +1472,7 @@ void security_inet_conn_established(struct sock *sk, { call_void_hook(inet_conn_established, sk, skb); } +EXPORT_SYMBOL(security_inet_conn_established); int security_secmark_relabel_packet(u32 secid) { @@ -1527,6 +1528,27 @@ int security_tun_dev_open(void *security) } EXPORT_SYMBOL(security_tun_dev_open); +int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) +{ + return call_int_hook(sctp_assoc_request, 0, ep, skb); +} +EXPORT_SYMBOL(security_sctp_assoc_request); + +int security_sctp_bind_connect(struct sock *sk, int optname, + struct sockaddr *address, int addrlen) +{ + return call_int_hook(sctp_bind_connect, 0, sk, optname, + address, addrlen); +} +EXPORT_SYMBOL(security_sctp_bind_connect); + +void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, + struct sock *newsk) +{ + call_void_hook(sctp_sk_clone, ep, sk, newsk); +} +EXPORT_SYMBOL(security_sctp_sk_clone); + #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_INFINIBAND
The SCTP security hooks are explained in: Documentation/security/LSM-sctp.rst Signed-off-by: Richard Haines <richard_c_haines@btinternet.com> --- Documentation/security/LSM-sctp.rst | 175 ++++++++++++++++++++++++++++++++++++ include/linux/lsm_hooks.h | 36 ++++++++ include/linux/security.h | 25 ++++++ security/security.c | 22 +++++ 4 files changed, 258 insertions(+) create mode 100644 Documentation/security/LSM-sctp.rst