diff options
Diffstat (limited to 'security/selinux')
| -rw-r--r-- | security/selinux/Makefile | 2 | ||||
| -rw-r--r-- | security/selinux/avc.c | 2 | ||||
| -rw-r--r-- | security/selinux/hooks.c | 44 | ||||
| -rw-r--r-- | security/selinux/include/av_perm_to_string.h | 102 | ||||
| -rw-r--r-- | security/selinux/include/av_permissions.h | 179 | ||||
| -rw-r--r-- | security/selinux/include/class_to_string.h | 34 | ||||
| -rw-r--r-- | security/selinux/include/flask.h | 16 | ||||
| -rw-r--r-- | security/selinux/include/netlabel.h (renamed from security/selinux/include/selinux_netlabel.h) | 71 | ||||
| -rw-r--r-- | security/selinux/include/security.h | 29 | ||||
| -rw-r--r-- | security/selinux/netlabel.c | 363 | ||||
| -rw-r--r-- | security/selinux/netlink.c | 4 | ||||
| -rw-r--r-- | security/selinux/selinuxfs.c | 85 | ||||
| -rw-r--r-- | security/selinux/ss/services.c | 499 |
13 files changed, 665 insertions, 765 deletions
diff --git a/security/selinux/Makefile b/security/selinux/Makefile index faf2e02e4410..dc3502e30b19 100644 --- a/security/selinux/Makefile +++ b/security/selinux/Makefile @@ -8,5 +8,7 @@ selinux-y := avc.o hooks.o selinuxfs.o netlink.o nlmsgtab.o netif.o exports.o selinux-$(CONFIG_SECURITY_NETWORK_XFRM) += xfrm.o +selinux-$(CONFIG_NETLABEL) += netlabel.o + EXTRA_CFLAGS += -Isecurity/selinux/include diff --git a/security/selinux/avc.c b/security/selinux/avc.c index da8caf10ef97..e4396a89edc6 100644 --- a/security/selinux/avc.c +++ b/security/selinux/avc.c @@ -217,6 +217,8 @@ static void avc_dump_query(struct audit_buffer *ab, u32 ssid, u32 tsid, u16 tcla audit_log_format(ab, " tcontext=%s", scontext); kfree(scontext); } + + BUG_ON(tclass >= ARRAY_SIZE(class_to_string) || !class_to_string[tclass]); audit_log_format(ab, " tclass=%s", class_to_string[tclass]); } diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index d41e24d6ae41..885a9a958b8d 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -77,7 +77,7 @@ #include "objsec.h" #include "netif.h" #include "xfrm.h" -#include "selinux_netlabel.h" +#include "netlabel.h" #define XATTR_SELINUX_SUFFIX "selinux" #define XATTR_NAME_SELINUX XATTR_SECURITY_PREFIX XATTR_SELINUX_SUFFIX @@ -2944,7 +2944,7 @@ static int selinux_parse_skb_ipv4(struct sk_buff *skb, int offset, ihlen, ret = -EINVAL; struct iphdr _iph, *ih; - offset = skb->nh.raw - skb->data; + offset = skb_network_offset(skb); ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph); if (ih == NULL) goto out; @@ -3026,7 +3026,7 @@ static int selinux_parse_skb_ipv6(struct sk_buff *skb, int ret = -EINVAL, offset; struct ipv6hdr _ipv6h, *ip6; - offset = skb->nh.raw - skb->data; + offset = skb_network_offset(skb); ip6 = skb_header_pointer(skb, offset, sizeof(_ipv6h), &_ipv6h); if (ip6 == NULL) goto out; @@ -3123,6 +3123,34 @@ static int selinux_parse_skb(struct sk_buff *skb, struct avc_audit_data *ad, return ret; } +/** + * selinux_skb_extlbl_sid - Determine the external label of a packet + * @skb: the packet + * @base_sid: the SELinux SID to use as a context for MLS only external labels + * @sid: the packet's SID + * + * Description: + * Check the various different forms of external packet labeling and determine + * the external SID for the packet. + * + */ +static void selinux_skb_extlbl_sid(struct sk_buff *skb, + u32 base_sid, + u32 *sid) +{ + u32 xfrm_sid; + u32 nlbl_sid; + + selinux_skb_xfrm_sid(skb, &xfrm_sid); + if (selinux_netlbl_skbuff_getsid(skb, + (xfrm_sid == SECSID_NULL ? + base_sid : xfrm_sid), + &nlbl_sid) != 0) + nlbl_sid = SECSID_NULL; + + *sid = (nlbl_sid == SECSID_NULL ? xfrm_sid : nlbl_sid); +} + /* socket security operations */ static int socket_has_perm(struct task_struct *task, struct socket *sock, u32 perms) @@ -3664,9 +3692,7 @@ static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff * if (sock && sock->sk->sk_family == PF_UNIX) selinux_get_inode_sid(SOCK_INODE(sock), &peer_secid); else if (skb) - security_skb_extlbl_sid(skb, - SECINITSID_UNLABELED, - &peer_secid); + selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &peer_secid); if (peer_secid == SECSID_NULL) err = -EINVAL; @@ -3727,7 +3753,7 @@ static int selinux_inet_conn_request(struct sock *sk, struct sk_buff *skb, u32 newsid; u32 peersid; - security_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &peersid); + selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &peersid); if (peersid == SECSID_NULL) { req->secid = sksec->sid; req->peer_secid = SECSID_NULL; @@ -3765,7 +3791,7 @@ static void selinux_inet_conn_established(struct sock *sk, { struct sk_security_struct *sksec = sk->sk_security; - security_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &sksec->peer_sid); + selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &sksec->peer_sid); } static void selinux_req_classify_flow(const struct request_sock *req, @@ -3786,7 +3812,7 @@ static int selinux_nlmsg_perm(struct sock *sk, struct sk_buff *skb) err = -EINVAL; goto out; } - nlh = (struct nlmsghdr *)skb->data; + nlh = nlmsg_hdr(skb); err = selinux_nlmsg_lookup(isec->sclass, nlh->nlmsg_type, &perm); if (err) { diff --git a/security/selinux/include/av_perm_to_string.h b/security/selinux/include/av_perm_to_string.h index ad9fb2d69b50..b83e74012a97 100644 --- a/security/selinux/include/av_perm_to_string.h +++ b/security/selinux/include/av_perm_to_string.h @@ -128,96 +128,6 @@ S_(SECCLASS_CAPABILITY, CAPABILITY__LEASE, "lease") S_(SECCLASS_CAPABILITY, CAPABILITY__AUDIT_WRITE, "audit_write") S_(SECCLASS_CAPABILITY, CAPABILITY__AUDIT_CONTROL, "audit_control") - S_(SECCLASS_PASSWD, PASSWD__PASSWD, "passwd") - S_(SECCLASS_PASSWD, PASSWD__CHFN, "chfn") - S_(SECCLASS_PASSWD, PASSWD__CHSH, "chsh") - S_(SECCLASS_PASSWD, PASSWD__ROOTOK, "rootok") - S_(SECCLASS_PASSWD, PASSWD__CRONTAB, "crontab") - S_(SECCLASS_DRAWABLE, DRAWABLE__CREATE, "create") - S_(SECCLASS_DRAWABLE, DRAWABLE__DESTROY, "destroy") - S_(SECCLASS_DRAWABLE, DRAWABLE__DRAW, "draw") - S_(SECCLASS_DRAWABLE, DRAWABLE__COPY, "copy") - S_(SECCLASS_DRAWABLE, DRAWABLE__GETATTR, "getattr") - S_(SECCLASS_GC, GC__CREATE, "create") - S_(SECCLASS_GC, GC__FREE, "free") - S_(SECCLASS_GC, GC__GETATTR, "getattr") - S_(SECCLASS_GC, GC__SETATTR, "setattr") - S_(SECCLASS_WINDOW, WINDOW__ADDCHILD, "addchild") - S_(SECCLASS_WINDOW, WINDOW__CREATE, "create") - S_(SECCLASS_WINDOW, WINDOW__DESTROY, "destroy") - S_(SECCLASS_WINDOW, WINDOW__MAP, "map") - S_(SECCLASS_WINDOW, WINDOW__UNMAP, "unmap") - S_(SECCLASS_WINDOW, WINDOW__CHSTACK, "chstack") - S_(SECCLASS_WINDOW, WINDOW__CHPROPLIST, "chproplist") - S_(SECCLASS_WINDOW, WINDOW__CHPROP, "chprop") - S_(SECCLASS_WINDOW, WINDOW__LISTPROP, "listprop") - S_(SECCLASS_WINDOW, WINDOW__GETATTR, "getattr") - S_(SECCLASS_WINDOW, WINDOW__SETATTR, "setattr") - S_(SECCLASS_WINDOW, WINDOW__SETFOCUS, "setfocus") - S_(SECCLASS_WINDOW, WINDOW__MOVE, "move") - S_(SECCLASS_WINDOW, WINDOW__CHSELECTION, "chselection") - S_(SECCLASS_WINDOW, WINDOW__CHPARENT, "chparent") - S_(SECCLASS_WINDOW, WINDOW__CTRLLIFE, "ctrllife") - S_(SECCLASS_WINDOW, WINDOW__ENUMERATE, "enumerate") - S_(SECCLASS_WINDOW, WINDOW__TRANSPARENT, "transparent") - S_(SECCLASS_WINDOW, WINDOW__MOUSEMOTION, "mousemotion") - S_(SECCLASS_WINDOW, WINDOW__CLIENTCOMEVENT, "clientcomevent") - S_(SECCLASS_WINDOW, WINDOW__INPUTEVENT, "inputevent") - S_(SECCLASS_WINDOW, WINDOW__DRAWEVENT, "drawevent") - S_(SECCLASS_WINDOW, WINDOW__WINDOWCHANGEEVENT, "windowchangeevent") - S_(SECCLASS_WINDOW, WINDOW__WINDOWCHANGEREQUEST, "windowchangerequest") - S_(SECCLASS_WINDOW, WINDOW__SERVERCHANGEEVENT, "serverchangeevent") - S_(SECCLASS_WINDOW, WINDOW__EXTENSIONEVENT, "extensionevent") - S_(SECCLASS_FONT, FONT__LOAD, "load") - S_(SECCLASS_FONT, FONT__FREE, "free") - S_(SECCLASS_FONT, FONT__GETATTR, "getattr") - S_(SECCLASS_FONT, FONT__USE, "use") - S_(SECCLASS_COLORMAP, COLORMAP__CREATE, "create") - S_(SECCLASS_COLORMAP, COLORMAP__FREE, "free") - S_(SECCLASS_COLORMAP, COLORMAP__INSTALL, "install") - S_(SECCLASS_COLORMAP, COLORMAP__UNINSTALL, "uninstall") - S_(SECCLASS_COLORMAP, COLORMAP__LIST, "list") - S_(SECCLASS_COLORMAP, COLORMAP__READ, "read") - S_(SECCLASS_COLORMAP, COLORMAP__STORE, "store") - S_(SECCLASS_COLORMAP, COLORMAP__GETATTR, "getattr") - S_(SECCLASS_COLORMAP, COLORMAP__SETATTR, "setattr") - S_(SECCLASS_PROPERTY, PROPERTY__CREATE, "create") - S_(SECCLASS_PROPERTY, PROPERTY__FREE, "free") - S_(SECCLASS_PROPERTY, PROPERTY__READ, "read") - S_(SECCLASS_PROPERTY, PROPERTY__WRITE, "write") - S_(SECCLASS_CURSOR, CURSOR__CREATE, "create") - S_(SECCLASS_CURSOR, CURSOR__CREATEGLYPH, "createglyph") - S_(SECCLASS_CURSOR, CURSOR__FREE, "free") - S_(SECCLASS_CURSOR, CURSOR__ASSIGN, "assign") - S_(SECCLASS_CURSOR, CURSOR__SETATTR, "setattr") - S_(SECCLASS_XCLIENT, XCLIENT__KILL, "kill") - S_(SECCLASS_XINPUT, XINPUT__LOOKUP, "lookup") - S_(SECCLASS_XINPUT, XINPUT__GETATTR, "getattr") - S_(SECCLASS_XINPUT, XINPUT__SETATTR, "setattr") - S_(SECCLASS_XINPUT, XINPUT__SETFOCUS, "setfocus") - S_(SECCLASS_XINPUT, XINPUT__WARPPOINTER, "warppointer") - S_(SECCLASS_XINPUT, XINPUT__ACTIVEGRAB, "activegrab") - S_(SECCLASS_XINPUT, XINPUT__PASSIVEGRAB, "passivegrab") - S_(SECCLASS_XINPUT, XINPUT__UNGRAB, "ungrab") - S_(SECCLASS_XINPUT, XINPUT__BELL, "bell") - S_(SECCLASS_XINPUT, XINPUT__MOUSEMOTION, "mousemotion") - S_(SECCLASS_XINPUT, XINPUT__RELABELINPUT, "relabelinput") - S_(SECCLASS_XSERVER, XSERVER__SCREENSAVER, "screensaver") - S_(SECCLASS_XSERVER, XSERVER__GETHOSTLIST, "gethostlist") - S_(SECCLASS_XSERVER, XSERVER__SETHOSTLIST, "sethostlist") - S_(SECCLASS_XSERVER, XSERVER__GETFONTPATH, "getfontpath") - S_(SECCLASS_XSERVER, XSERVER__SETFONTPATH, "setfontpath") - S_(SECCLASS_XSERVER, XSERVER__GETATTR, "getattr") - S_(SECCLASS_XSERVER, XSERVER__GRAB, "grab") - S_(SECCLASS_XSERVER, XSERVER__UNGRAB, "ungrab") - S_(SECCLASS_XEXTENSION, XEXTENSION__QUERY, "query") - S_(SECCLASS_XEXTENSION, XEXTENSION__USE, "use") - S_(SECCLASS_PAX, PAX__PAGEEXEC, "pageexec") - S_(SECCLASS_PAX, PAX__EMUTRAMP, "emutramp") - S_(SECCLASS_PAX, PAX__MPROTECT, "mprotect") - S_(SECCLASS_PAX, PAX__RANDMMAP, "randmmap") - S_(SECCLASS_PAX, PAX__RANDEXEC, "randexec") - S_(SECCLASS_PAX, PAX__SEGMEXEC, "segmexec") S_(SECCLASS_NETLINK_ROUTE_SOCKET, NETLINK_ROUTE_SOCKET__NLMSG_READ, "nlmsg_read") S_(SECCLASS_NETLINK_ROUTE_SOCKET, NETLINK_ROUTE_SOCKET__NLMSG_WRITE, "nlmsg_write") S_(SECCLASS_NETLINK_FIREWALL_SOCKET, NETLINK_FIREWALL_SOCKET__NLMSG_READ, "nlmsg_read") @@ -232,16 +142,6 @@ S_(SECCLASS_NETLINK_AUDIT_SOCKET, NETLINK_AUDIT_SOCKET__NLMSG_READPRIV, "nlmsg_readpriv") S_(SECCLASS_NETLINK_IP6FW_SOCKET, NETLINK_IP6FW_SOCKET__NLMSG_READ, "nlmsg_read") S_(SECCLASS_NETLINK_IP6FW_SOCKET, NETLINK_IP6FW_SOCKET__NLMSG_WRITE, "nlmsg_write") - S_(SECCLASS_DBUS, DBUS__ACQUIRE_SVC, "acquire_svc") - S_(SECCLASS_DBUS, DBUS__SEND_MSG, "send_msg") - S_(SECCLASS_NSCD, NSCD__GETPWD, "getpwd") - S_(SECCLASS_NSCD, NSCD__GETGRP, "getgrp") - S_(SECCLASS_NSCD, NSCD__GETHOST, "gethost") - S_(SECCLASS_NSCD, NSCD__GETSTAT, "getstat") - S_(SECCLASS_NSCD, NSCD__ADMIN, "admin") - S_(SECCLASS_NSCD, NSCD__SHMEMPWD, "shmempwd") - S_(SECCLASS_NSCD, NSCD__SHMEMGRP, "shmemgrp") - S_(SECCLASS_NSCD, NSCD__SHMEMHOST, "shmemhost") S_(SECCLASS_ASSOCIATION, ASSOCIATION__SENDTO, "sendto") S_(SECCLASS_ASSOCIATION, ASSOCIATION__RECVFROM, "recvfrom") S_(SECCLASS_ASSOCIATION, ASSOCIATION__SETCONTEXT, "setcontext") @@ -256,7 +156,5 @@ S_(SECCLASS_KEY, KEY__LINK, "link") S_(SECCLASS_KEY, KEY__SETATTR, "setattr") S_(SECCLASS_KEY, KEY__CREATE, "create") - S_(SECCLASS_CONTEXT, CONTEXT__TRANSLATE, "translate") - S_(SECCLASS_CONTEXT, CONTEXT__CONTAINS, "contains") S_(SECCLASS_DCCP_SOCKET, DCCP_SOCKET__NODE_BIND, "node_bind") S_(SECCLASS_DCCP_SOCKET, DCCP_SOCKET__NAME_CONNECT, "name_connect") diff --git a/security/selinux/include/av_permissions.h b/security/selinux/include/av_permissions.h index 2de4b5fe3aa1..5fee1735bffe 100644 --- a/security/selinux/include/av_permissions.h +++ b/security/selinux/include/av_permissions.h @@ -16,7 +16,6 @@ #define COMMON_FILE__SWAPON 0x00004000UL #define COMMON_FILE__QUOTAON 0x00008000UL #define COMMON_FILE__MOUNTON 0x00010000UL - #define COMMON_SOCKET__IOCTL 0x00000001UL #define COMMON_SOCKET__READ 0x00000002UL #define COMMON_SOCKET__WRITE 0x00000004UL @@ -39,7 +38,6 @@ #define COMMON_SOCKET__RECV_MSG 0x00080000UL #define COMMON_SOCKET__SEND_MSG 0x00100000UL #define COMMON_SOCKET__NAME_BIND 0x00200000UL - #define COMMON_IPC__CREATE 0x00000001UL #define COMMON_IPC__DESTROY 0x00000002UL #define COMMON_IPC__GETATTR 0x00000004UL @@ -49,7 +47,6 @@ #define COMMON_IPC__ASSOCIATE 0x00000040UL #define COMMON_IPC__UNIX_READ 0x00000080UL #define COMMON_IPC__UNIX_WRITE 0x00000100UL - #define FILESYSTEM__MOUNT 0x00000001UL #define FILESYSTEM__REMOUNT 0x00000002UL #define FILESYSTEM__UNMOUNT 0x00000004UL @@ -60,7 +57,6 @@ #define FILESYSTEM__ASSOCIATE 0x00000080UL #define FILESYSTEM__QUOTAMOD 0x00000100UL #define FILESYSTEM__QUOTAGET 0x00000200UL - #define DIR__IOCTL 0x00000001UL #define DIR__READ 0x00000002UL #define DIR__WRITE 0x00000004UL @@ -78,13 +74,11 @@ #define DIR__SWAPON 0x00004000UL #define DIR__QUOTAON 0x00008000UL #define DIR__MOUNTON 0x00010000UL - #define DIR__ADD_NAME 0x00020000UL #define DIR__REMOVE_NAME 0x00040000UL #define DIR__REPARENT 0x00080000UL #define DIR__SEARCH 0x00100000UL #define DIR__RMDIR 0x00200000UL - #define FILE__IOCTL 0x00000001UL #define FILE__READ 0x00000002UL #define FILE__WRITE 0x00000004UL @@ -102,11 +96,9 @@ #define FILE__SWAPON 0x00004000UL #define FILE__QUOTAON 0x00008000UL #define FILE__MOUNTON 0x00010000UL - #define FILE__EXECUTE_NO_TRANS 0x00020000UL #define FILE__ENTRYPOINT 0x00040000UL #define FILE__EXECMOD 0x00080000UL - #define LNK_FILE__IOCTL 0x00000001UL #define LNK_FILE__READ 0x00000002UL #define LNK_FILE__WRITE 0x00000004UL @@ -124,7 +116,6 @@ #define LNK_FILE__SWAPON 0x00004000UL #define LNK_FILE__QUOTAON 0x00008000UL #define LNK_FILE__MOUNTON 0x00010000UL - #define CHR_FILE__IOCTL 0x00000001UL #define CHR_FILE__READ 0x00000002UL #define CHR_FILE__WRITE 0x00000004UL @@ -142,11 +133,9 @@ #define CHR_FILE__SWAPON 0x00004000UL #define CHR_FILE__QUOTAON 0x00008000UL #define CHR_FILE__MOUNTON 0x00010000UL - #define CHR_FILE__EXECUTE_NO_TRANS 0x00020000UL #define CHR_FILE__ENTRYPOINT 0x00040000UL #define CHR_FILE__EXECMOD 0x00080000UL - #define BLK_FILE__IOCTL 0x00000001UL #define BLK_FILE__READ 0x00000002UL #define BLK_FILE__WRITE 0x00000004UL @@ -164,7 +153,6 @@ #define BLK_FILE__SWAPON 0x00004000UL #define BLK_FILE__QUOTAON 0x00008000UL #define BLK_FILE__MOUNTON 0x00010000UL - #define SOCK_FILE__IOCTL 0x00000001UL #define SOCK_FILE__READ 0x00000002UL #define SOCK_FILE__WRITE 0x00000004UL @@ -182,7 +170,6 @@ #define SOCK_FILE__SWAPON 0x00004000UL #define SOCK_FILE__QUOTAON 0x00008000UL #define SOCK_FILE__MOUNTON 0x00010000UL - #define FIFO_FILE__IOCTL 0x00000001UL #define FIFO_FILE__READ 0x00000002UL #define FIFO_FILE__WRITE 0x00000004UL @@ -200,9 +187,7 @@ #define FIFO_FILE__SWAPON 0x00004000UL #define FIFO_FILE__QUOTAON 0x00008000UL #define FIFO_FILE__MOUNTON 0x00010000UL - #define FD__USE 0x00000001UL - #define SOCKET__IOCTL 0x00000001UL #define SOCKET__READ 0x00000002UL #define SOCKET__WRITE 0x00000004UL @@ -225,7 +210,6 @@ #define SOCKET__RECV_MSG 0x00080000UL #define SOCKET__SEND_MSG 0x00100000UL #define SOCKET__NAME_BIND 0x00200000UL - #define TCP_SOCKET__IOCTL 0x00000001UL #define TCP_SOCKET__READ 0x00000002UL #define TCP_SOCKET__WRITE 0x00000004UL @@ -248,13 +232,11 @@ #define TCP_SOCKET__RECV_MSG 0x00080000UL #define TCP_SOCKET__SEND_MSG 0x00100000UL #define TCP_SOCKET__NAME_BIND 0x00200000UL - #define TCP_SOCKET__CONNECTTO 0x00400000UL #define TCP_SOCKET__NEWCONN 0x00800000UL #define TCP_SOCKET__ACCEPTFROM 0x01000000UL #define TCP_SOCKET__NODE_BIND 0x02000000UL #define TCP_SOCKET__NAME_CONNECT 0x04000000UL - #define UDP_SOCKET__IOCTL 0x00000001UL #define UDP_SOCKET__READ 0x00000002UL #define UDP_SOCKET__WRITE 0x00000004UL @@ -277,9 +259,7 @@ #define UDP_SOCKET__RECV_MSG 0x00080000UL #define UDP_SOCKET__SEND_MSG 0x00100000UL #define UDP_SOCKET__NAME_BIND 0x00200000UL - #define UDP_SOCKET__NODE_BIND 0x00400000UL - #define RAWIP_SOCKET__IOCTL 0x00000001UL #define RAWIP_SOCKET__READ 0x00000002UL #define RAWIP_SOCKET__WRITE 0x00000004UL @@ -302,9 +282,7 @@ #define RAWIP_SOCKET__RECV_MSG 0x00080000UL #define RAWIP_SOCKET__SEND_MSG 0x00100000UL #define RAWIP_SOCKET__NAME_BIND 0x00200000UL - #define RAWIP_SOCKET__NODE_BIND 0x00400000UL - #define NODE__TCP_RECV 0x00000001UL #define NODE__TCP_SEND 0x00000002UL #define NODE__UDP_RECV 0x00000004UL @@ -314,7 +292,6 @@ #define NODE__ENFORCE_DEST 0x00000040UL #define NODE__DCCP_RECV 0x00000080UL #define NODE__DCCP_SEND 0x00000100UL - #define NETIF__TCP_RECV 0x00000001UL #define NETIF__TCP_SEND 0x00000002UL #define NETIF__UDP_RECV 0x00000004UL @@ -323,7 +300,6 @@ #define NETIF__RAWIP_SEND 0x00000020UL #define NETIF__DCCP_RECV 0x00000040UL #define NETIF__DCCP_SEND 0x00000080UL - #define NETLINK_SOCKET__IOCTL 0x00000001UL #define NETLINK_SOCKET__READ 0x00000002UL #define NETLINK_SOCKET__WRITE 0x00000004UL @@ -346,7 +322,6 @@ #define NETLINK_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_SOCKET__NAME_BIND 0x00200000UL - #define PACKET_SOCKET__IOCTL 0x00000001UL #define PACKET_SOCKET__READ 0x00000002UL #define PACKET_SOCKET__WRITE 0x00000004UL @@ -369,7 +344,6 @@ #define PACKET_SOCKET__RECV_MSG 0x00080000UL #define PACKET_SOCKET__SEND_MSG 0x00100000UL #define PACKET_SOCKET__NAME_BIND 0x00200000UL - #define KEY_SOCKET__IOCTL 0x00000001UL #define KEY_SOCKET__READ 0x00000002UL #define KEY_SOCKET__WRITE 0x00000004UL @@ -392,7 +366,6 @@ #define KEY_SOCKET__RECV_MSG 0x00080000UL #define KEY_SOCKET__SEND_MSG 0x00100000UL #define KEY_SOCKET__NAME_BIND 0x00200000UL - #define UNIX_STREAM_SOCKET__IOCTL 0x00000001UL #define UNIX_STREAM_SOCKET__READ 0x00000002UL #define UNIX_STREAM_SOCKET__WRITE 0x00000004UL @@ -415,11 +388,9 @@ #define UNIX_STREAM_SOCKET__RECV_MSG 0x00080000UL #define UNIX_STREAM_SOCKET__SEND_MSG 0x00100000UL #define UNIX_STREAM_SOCKET__NAME_BIND 0x00200000UL - #define UNIX_STREAM_SOCKET__CONNECTTO 0x00400000UL #define UNIX_STREAM_SOCKET__NEWCONN 0x00800000UL #define UNIX_STREAM_SOCKET__ACCEPTFROM 0x01000000UL - #define UNIX_DGRAM_SOCKET__IOCTL 0x00000001UL #define UNIX_DGRAM_SOCKET__READ 0x00000002UL #define UNIX_DGRAM_SOCKET__WRITE 0x00000004UL @@ -442,7 +413,6 @@ #define UNIX_DGRAM_SOCKET__RECV_MSG 0x00080000UL #define UNIX_DGRAM_SOCKET__SEND_MSG 0x00100000UL #define UNIX_DGRAM_SOCKET__NAME_BIND 0x00200000UL - #define PROCESS__FORK 0x00000001UL #define PROCESS__TRANSITION 0x00000002UL #define PROCESS__SIGCHLD 0x00000004UL @@ -473,7 +443,6 @@ #define PROCESS__EXECHEAP 0x08000000UL #define PROCESS__SETKEYCREATE 0x10000000UL #define PROCESS__SETSOCKCREATE 0x20000000UL - #define IPC__CREATE 0x00000001UL #define IPC__DESTROY 0x00000002UL #define IPC__GETATTR 0x00000004UL @@ -483,7 +452,6 @@ #define IPC__ASSOCIATE 0x00000040UL #define IPC__UNIX_READ 0x00000080UL #define IPC__UNIX_WRITE 0x00000100UL - #define SEM__CREATE 0x00000001UL #define SEM__DESTROY 0x00000002UL #define SEM__GETATTR 0x00000004UL @@ -493,7 +461,6 @@ #define SEM__ASSOCIATE 0x00000040UL #define SEM__UNIX_READ 0x00000080UL #define SEM__UNIX_WRITE 0x00000100UL - #define MSGQ__CREATE 0x00000001UL #define MSGQ__DESTROY 0x00000002UL #define MSGQ__GETATTR 0x00000004UL @@ -503,12 +470,9 @@ #define MSGQ__ASSOCIATE 0x00000040UL #define MSGQ__UNIX_READ 0x00000080UL #define MSGQ__UNIX_WRITE 0x00000100UL - #define MSGQ__ENQUEUE 0x00000200UL - #define MSG__SEND 0x00000001UL #define MSG__RECEIVE 0x00000002UL - #define SHM__CREATE 0x00000001UL #define SHM__DESTROY 0x00000002UL #define SHM__GETATTR 0x00000004UL @@ -518,9 +482,7 @@ #define SHM__ASSOCIATE 0x00000040UL #define SHM__UNIX_READ 0x00000080UL #define SHM__UNIX_WRITE 0x00000100UL - #define SHM__LOCK 0x00000200UL - #define SECURITY__COMPUTE_AV 0x00000001UL #define SECURITY__COMPUTE_CREATE 0x00000002UL #define SECURITY__COMPUTE_MEMBER 0x00000004UL @@ -532,12 +494,10 @@ #define SECURITY__SETBOOL 0x00000100UL #define SECURITY__SETSECPARAM 0x00000200UL #define SECURITY__SETCHECKREQPROT 0x00000400UL - #define SYSTEM__IPC_INFO 0x00000001UL #define SYSTEM__SYSLOG_READ 0x00000002UL #define SYSTEM__SYSLOG_MOD 0x00000004UL #define SYSTEM__SYSLOG_CONSOLE 0x00000008UL - #define CAPABILITY__CHOWN 0x00000001UL #define CAPABILITY__DAC_OVERRIDE 0x00000002UL #define CAPABILITY__DAC_READ_SEARCH 0x00000004UL @@ -569,110 +529,6 @@ #define CAPABILITY__LEASE 0x10000000UL #define CAPABILITY__AUDIT_WRITE 0x20000000UL #define CAPABILITY__AUDIT_CONTROL 0x40000000UL - -#define PASSWD__PASSWD 0x00000001UL -#define PASSWD__CHFN 0x00000002UL -#define PASSWD__CHSH 0x00000004UL -#define PASSWD__ROOTOK 0x00000008UL -#define PASSWD__CRONTAB 0x00000010UL - -#define DRAWABLE__CREATE 0x00000001UL -#define DRAWABLE__DESTROY 0x00000002UL -#define DRAWABLE__DRAW 0x00000004UL -#define DRAWABLE__COPY 0x00000008UL -#define DRAWABLE__GETATTR 0x00000010UL - -#define GC__CREATE 0x00000001UL -#define GC__FREE 0x00000002UL -#define GC__GETATTR 0x00000004UL -#define GC__SETATTR 0x00000008UL - -#define WINDOW__ADDCHILD 0x00000001UL -#define WINDOW__CREATE 0x00000002UL -#define WINDOW__DESTROY 0x00000004UL -#define WINDOW__MAP 0x00000008UL -#define WINDOW__UNMAP 0x00000010UL -#define WINDOW__CHSTACK 0x00000020UL -#define WINDOW__CHPROPLIST 0x00000040UL -#define WINDOW__CHPROP 0x00000080UL -#define WINDOW__LISTPROP 0x00000100UL -#define WINDOW__GETATTR 0x00000200UL -#define WINDOW__SETATTR 0x00000400UL -#define WINDOW__SETFOCUS 0x00000800UL -#define WINDOW__MOVE 0x00001000UL -#define WINDOW__CHSELECTION 0x00002000UL -#define WINDOW__CHPARENT 0x00004000UL -#define WINDOW__CTRLLIFE 0x00008000UL -#define WINDOW__ENUMERATE 0x00010000UL -#define WINDOW__TRANSPARENT 0x00020000UL -#define WINDOW__MOUSEMOTION 0x00040000UL -#define WINDOW__CLIENTCOMEVENT 0x00080000UL -#define WINDOW__INPUTEVENT 0x00100000UL -#define WINDOW__DRAWEVENT 0x00200000UL -#define WINDOW__WINDOWCHANGEEVENT 0x00400000UL -#define WINDOW__WINDOWCHANGEREQUEST 0x00800000UL -#define WINDOW__SERVERCHANGEEVENT 0x01000000UL -#define WINDOW__EXTENSIONEVENT 0x02000000UL - -#define FONT__LOAD 0x00000001UL -#define FONT__FREE 0x00000002UL -#define FONT__GETATTR 0x00000004UL -#define FONT__USE 0x00000008UL - -#define COLORMAP__CREATE 0x00000001UL -#define COLORMAP__FREE 0x00000002UL -#define COLORMAP__INSTALL 0x00000004UL -#define COLORMAP__UNINSTALL 0x00000008UL -#define COLORMAP__LIST 0x00000010UL -#define COLORMAP__READ 0x00000020UL -#define COLORMAP__STORE 0x00000040UL -#define COLORMAP__GETATTR 0x00000080UL -#define COLORMAP__SETATTR 0x00000100UL - -#define PROPERTY__CREATE 0x00000001UL -#define PROPERTY__FREE 0x00000002UL -#define PROPERTY__READ 0x00000004UL -#define PROPERTY__WRITE 0x00000008UL - -#define CURSOR__CREATE 0x00000001UL -#define CURSOR__CREATEGLYPH 0x00000002UL -#define CURSOR__FREE 0x00000004UL -#define CURSOR__ASSIGN 0x00000008UL -#define CURSOR__SETATTR 0x00000010UL - -#define XCLIENT__KILL 0x00000001UL - -#define XINPUT__LOOKUP 0x00000001UL -#define XINPUT__GETATTR 0x00000002UL -#define XINPUT__SETATTR 0x00000004UL -#define XINPUT__SETFOCUS 0x00000008UL -#define XINPUT__WARPPOINTER 0x00000010UL -#define XINPUT__ACTIVEGRAB 0x00000020UL -#define XINPUT__PASSIVEGRAB 0x00000040UL -#define XINPUT__UNGRAB 0x00000080UL -#define XINPUT__BELL 0x00000100UL -#define XINPUT__MOUSEMOTION 0x00000200UL -#define XINPUT__RELABELINPUT 0x00000400UL - -#define XSERVER__SCREENSAVER 0x00000001UL -#define XSERVER__GETHOSTLIST 0x00000002UL -#define XSERVER__SETHOSTLIST 0x00000004UL -#define XSERVER__GETFONTPATH 0x00000008UL -#define XSERVER__SETFONTPATH 0x00000010UL -#define XSERVER__GETATTR 0x00000020UL -#define XSERVER__GRAB 0x00000040UL -#define XSERVER__UNGRAB 0x00000080UL - -#define XEXTENSION__QUERY 0x00000001UL -#define XEXTENSION__USE 0x00000002UL - -#define PAX__PAGEEXEC 0x00000001UL -#define PAX__EMUTRAMP 0x00000002UL -#define PAX__MPROTECT 0x00000004UL -#define PAX__RANDMMAP 0x00000008UL -#define PAX__RANDEXEC 0x00000010UL -#define PAX__SEGMEXEC 0x00000020UL - #define NETLINK_ROUTE_SOCKET__IOCTL 0x00000001UL #define NETLINK_ROUTE_SOCKET__READ 0x00000002UL #define NETLINK_ROUTE_SOCKET__WRITE 0x00000004UL @@ -695,10 +551,8 @@ #define NETLINK_ROUTE_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_ROUTE_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_ROUTE_SOCKET__NAME_BIND 0x00200000UL - #define NETLINK_ROUTE_SOCKET__NLMSG_READ 0x00400000UL #define NETLINK_ROUTE_SOCKET__NLMSG_WRITE 0x00800000UL - #define NETLINK_FIREWALL_SOCKET__IOCTL 0x00000001UL #define NETLINK_FIREWALL_SOCKET__READ 0x00000002UL #define NETLINK_FIREWALL_SOCKET__WRITE 0x00000004UL @@ -721,10 +575,8 @@ #define NETLINK_FIREWALL_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_FIREWALL_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_FIREWALL_SOCKET__NAME_BIND 0x00200000UL - #define NETLINK_FIREWALL_SOCKET__NLMSG_READ 0x00400000UL #define NETLINK_FIREWALL_SOCKET__NLMSG_WRITE 0x00800000UL - #define NETLINK_TCPDIAG_SOCKET__IOCTL 0x00000001UL #define NETLINK_TCPDIAG_SOCKET__READ 0x00000002UL #define NETLINK_TCPDIAG_SOCKET__WRITE 0x00000004UL @@ -747,10 +599,8 @@ #define NETLINK_TCPDIAG_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_TCPDIAG_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_TCPDIAG_SOCKET__NAME_BIND 0x00200000UL - #define NETLINK_TCPDIAG_SOCKET__NLMSG_READ 0x00400000UL #define NETLINK_TCPDIAG_SOCKET__NLMSG_WRITE 0x00800000UL - #define NETLINK_NFLOG_SOCKET__IOCTL 0x00000001UL #define NETLINK_NFLOG_SOCKET__READ 0x00000002UL #define NETLINK_NFLOG_SOCKET__WRITE 0x00000004UL @@ -773,7 +623,6 @@ #define NETLINK_NFLOG_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_NFLOG_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_NFLOG_SOCKET__NAME_BIND 0x00200000UL - #define NETLINK_XFRM_SOCKET__IOCTL 0x00000001UL #define NETLINK_XFRM_SOCKET__READ 0x00000002UL #define NETLINK_XFRM_SOCKET__WRITE 0x00000004UL @@ -796,10 +645,8 @@ #define NETLINK_XFRM_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_XFRM_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_XFRM_SOCKET__NAME_BIND 0x00200000UL - #define NETLINK_XFRM_SOCKET__NLMSG_READ 0x00400000UL #define NETLINK_XFRM_SOCKET__NLMSG_WRITE 0x00800000UL - #define NETLINK_SELINUX_SOCKET__IOCTL 0x00000001UL #define NETLINK_SELINUX_SOCKET__READ 0x00000002UL #define NETLINK_SELINUX_SOCKET__WRITE 0x00000004UL @@ -822,7 +669,6 @@ #define NETLINK_SELINUX_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_SELINUX_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_SELINUX_SOCKET__NAME_BIND 0x00200000UL - #define NETLINK_AUDIT_SOCKET__IOCTL 0x00000001UL #define NETLINK_AUDIT_SOCKET__READ 0x00000002UL #define NETLINK_AUDIT_SOCKET__WRITE 0x00000004UL @@ -845,12 +691,10 @@ #define NETLINK_AUDIT_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_AUDIT_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_AUDIT_SOCKET__NAME_BIND 0x00200000UL - #define NETLINK_AUDIT_SOCKET__NLMSG_READ 0x00400000UL #define NETLINK_AUDIT_SOCKET__NLMSG_WRITE 0x00800000UL #define NETLINK_AUDIT_SOCKET__NLMSG_RELAY 0x01000000UL #define NETLINK_AUDIT_SOCKET__NLMSG_READPRIV 0x02000000UL - #define NETLINK_IP6FW_SOCKET__IOCTL 0x00000001UL #define NETLINK_IP6FW_SOCKET__READ 0x00000002UL #define NETLINK_IP6FW_SOCKET__WRITE 0x00000004UL @@ -873,10 +717,8 @@ #define NETLINK_IP6FW_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_IP6FW_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_IP6FW_SOCKET__NAME_BIND 0x00200000UL - #define NETLINK_IP6FW_SOCKET__NLMSG_READ 0x00400000UL #define NETLINK_IP6FW_SOCKET__NLMSG_WRITE 0x00800000UL - #define NETLINK_DNRT_SOCKET__IOCTL 0x00000001UL #define NETLINK_DNRT_SOCKET__READ 0x00000002UL #define NETLINK_DNRT_SOCKET__WRITE 0x00000004UL @@ -899,24 +741,10 @@ #define NETLINK_DNRT_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_DNRT_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_DNRT_SOCKET__NAME_BIND 0x00200000UL - -#define DBUS__ACQUIRE_SVC 0x00000001UL -#define DBUS__SEND_MSG 0x00000002UL - -#define NSCD__GETPWD 0x00000001UL -#define NSCD__GETGRP 0x00000002UL -#define NSCD__GETHOST 0x00000004UL -#define NSCD__GETSTAT 0x00000008UL -#define NSCD__ADMIN 0x00000010UL -#define NSCD__SHMEMPWD 0x00000020UL -#define NSCD__SHMEMGRP 0x00000040UL -#define NSCD__SHMEMHOST 0x00000080UL - #define ASSOCIATION__SENDTO 0x00000001UL #define ASSOCIATION__RECVFROM 0x00000002UL #define ASSOCIATION__SETCONTEXT 0x00000004UL #define ASSOCIATION__POLMATCH 0x00000008UL - #define NETLINK_KOBJECT_UEVENT_SOCKET__IOCTL 0x00000001UL #define NETLINK_KOBJECT_UEVENT_SOCKET__READ 0x00000002UL #define NETLINK_KOBJECT_UEVENT_SOCKET__WRITE 0x00000004UL @@ -939,7 +767,6 @@ #define NETLINK_KOBJECT_UEVENT_SOCKET__RECV_MSG 0x00080000UL #define NETLINK_KOBJECT_UEVENT_SOCKET__SEND_MSG 0x00100000UL #define NETLINK_KOBJECT_UEVENT_SOCKET__NAME_BIND 0x00200000UL - #define APPLETALK_SOCKET__IOCTL 0x00000001UL #define APPLETALK_SOCKET__READ 0x00000002UL #define APPLETALK_SOCKET__WRITE 0x00000004UL @@ -962,11 +789,9 @@ #define APPLETALK_SOCKET__RECV_MSG 0x00080000UL #define APPLETALK_SOCKET__SEND_MSG 0x00100000UL #define APPLETALK_SOCKET__NAME_BIND 0x00200000UL - #define PACKET__SEND 0x00000001UL #define PACKET__RECV 0x00000002UL #define PACKET__RELABELTO 0x00000004UL - #define KEY__VIEW 0x00000001UL #define KEY__READ 0x00000002UL #define KEY__WRITE 0x00000004UL @@ -974,10 +799,6 @@ #define KEY__LINK 0x00000010UL #define KEY__SETATTR 0x00000020UL #define KEY__CREATE 0x00000040UL - -#define CONTEXT__TRANSLATE 0x00000001UL -#define CONTEXT__CONTAINS 0x00000002UL - #define DCCP_SOCKET__IOCTL 0x00000001UL #define DCCP_SOCKET__READ 0x00000002UL #define DCCP_SOCKET__WRITE 0x00000004UL diff --git a/security/selinux/include/class_to_string.h b/security/selinux/include/class_to_string.h index 9f3ebb1bfae6..378799068441 100644 --- a/security/selinux/include/class_to_string.h +++ b/security/selinux/include/class_to_string.h @@ -2,7 +2,7 @@ /* * Security object class definitions */ - S_("null") + S_(NULL) S_("security") S_("process") S_("system") @@ -32,19 +32,19 @@ S_("msgq") S_("shm") S_("ipc") - S_("passwd") - S_("drawable") - S_("window") - S_("gc") - S_("font") - S_("colormap") - S_("property") - S_("cursor") - S_("xclient") - S_("xinput") - S_("xserver") - S_("xextension") - S_("pax") + S_(NULL) + S_(NULL) + S_(NULL) + S_(NULL) + S_(NULL) + S_(NULL) + S_(NULL) + S_(NULL) + S_(NULL) + S_(NULL) + S_(NULL) + S_(NULL) + S_(NULL) S_("netlink_route_socket") S_("netlink_firewall_socket") S_("netlink_tcpdiag_socket") @@ -54,12 +54,12 @@ S_("netlink_audit_socket") S_("netlink_ip6fw_socket") S_("netlink_dnrt_socket") - S_("dbus") - S_("nscd") + S_(NULL) + S_(NULL) S_("association") S_("netlink_kobject_uevent_socket") S_("appletalk_socket") S_("packet") S_("key") - S_("context") + S_(NULL) S_("dccp_socket") diff --git a/security/selinux/include/flask.h b/security/selinux/include/flask.h index 67cef371ee00..35f309f47873 100644 --- a/security/selinux/include/flask.h +++ b/security/selinux/include/flask.h @@ -34,19 +34,6 @@ #define SECCLASS_MSGQ 27 #define SECCLASS_SHM 28 #define SECCLASS_IPC 29 -#define SECCLASS_PASSWD 30 -#define SECCLASS_DRAWABLE 31 -#define SECCLASS_WINDOW 32 -#define SECCLASS_GC 33 -#define SECCLASS_FONT 34 -#define SECCLASS_COLORMAP 35 -#define SECCLASS_PROPERTY 36 -#define SECCLASS_CURSOR 37 -#define SECCLASS_XCLIENT 38 -#define SECCLASS_XINPUT 39 -#define SECCLASS_XSERVER 40 -#define SECCLASS_XEXTENSION 41 -#define SECCLASS_PAX 42 #define SECCLASS_NETLINK_ROUTE_SOCKET 43 #define SECCLASS_NETLINK_FIREWALL_SOCKET 44 #define SECCLASS_NETLINK_TCPDIAG_SOCKET 45 @@ -56,14 +43,11 @@ #define SECCLASS_NETLINK_AUDIT_SOCKET 49 #define SECCLASS_NETLINK_IP6FW_SOCKET 50 #define SECCLASS_NETLINK_DNRT_SOCKET 51 -#define SECCLASS_DBUS 52 -#define SECCLASS_NSCD 53 #define SECCLASS_ASSOCIATION 54 #define SECCLASS_NETLINK_KOBJECT_UEVENT_SOCKET 55 #define SECCLASS_APPLETALK_SOCKET 56 #define SECCLASS_PACKET 57 #define SECCLASS_KEY 58 -#define SECCLASS_CONTEXT 59 #define SECCLASS_DCCP_SOCKET 60 /* diff --git a/security/selinux/include/selinux_netlabel.h b/security/selinux/include/netlabel.h index 2a732c9033e3..218e3f77c350 100644 --- a/security/selinux/include/selinux_netlabel.h +++ b/security/selinux/include/netlabel.h @@ -38,19 +38,22 @@ #ifdef CONFIG_NETLABEL void selinux_netlbl_cache_invalidate(void); -int selinux_netlbl_skbuff_getsid(struct sk_buff *skb, u32 base_sid, u32 *sid); -int selinux_netlbl_socket_post_create(struct socket *sock); -void selinux_netlbl_sock_graft(struct sock *sk, struct socket *sock); -int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, - struct sk_buff *skb, - struct avc_audit_data *ad); + void selinux_netlbl_sk_security_reset(struct sk_security_struct *ssec, int family); void selinux_netlbl_sk_security_init(struct sk_security_struct *ssec, int family); void selinux_netlbl_sk_security_clone(struct sk_security_struct *ssec, struct sk_security_struct *newssec); + +int selinux_netlbl_skbuff_getsid(struct sk_buff *skb, u32 base_sid, u32 *sid); + +void selinux_netlbl_sock_graft(struct sock *sk, struct socket *sock); +int selinux_netlbl_socket_post_create(struct socket *sock); int selinux_netlbl_inode_permission(struct inode *inode, int mask); +int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, + struct sk_buff *skb, + struct avc_audit_data *ad); int selinux_netlbl_socket_setsockopt(struct socket *sock, int level, int optname); @@ -60,59 +63,53 @@ static inline void selinux_netlbl_cache_invalidate(void) return; } -static inline int selinux_netlbl_skbuff_getsid(struct sk_buff *skb, - u32 base_sid, - u32 *sid) +static inline void selinux_netlbl_sk_security_reset( + struct sk_security_struct *ssec, + int family) { - *sid = SECSID_NULL; - return 0; + return; } - -static inline int selinux_netlbl_socket_post_create(struct socket *sock) +static inline void selinux_netlbl_sk_security_init( + struct sk_security_struct *ssec, + int family) { - return 0; + return; } - -static inline void selinux_netlbl_sock_graft(struct sock *sk, - struct socket *sock) +static inline void selinux_netlbl_sk_security_clone( + struct sk_security_struct *ssec, + struct sk_security_struct *newssec) { return; } -static inline int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, - struct sk_buff *skb, - struct avc_audit_data *ad) +static inline int selinux_netlbl_skbuff_getsid(struct sk_buff *skb, + u32 base_sid, + u32 *sid) { + *sid = SECSID_NULL; return 0; } -static inline void selinux_netlbl_sk_security_reset( - struct sk_security_struct *ssec, - int family) -{ - return; -} - -static inline void selinux_netlbl_sk_security_init( - struct sk_security_struct *ssec, - int family) +static inline void selinux_netlbl_sock_graft(struct sock *sk, + struct socket *sock) { return; } - -static inline void selinux_netlbl_sk_security_clone( - struct sk_security_struct *ssec, - struct sk_security_struct *newssec) +static inline int selinux_netlbl_socket_post_create(struct socket *sock) { - return; + return 0; } - static inline int selinux_netlbl_inode_permission(struct inode *inode, int mask) { return 0; } - +static inline int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, + struct sk_buff *skb, + struct avc_audit_data *ad) +{ + return 0; +} static inline int selinux_netlbl_socket_setsockopt(struct socket *sock, int level, int optname) diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h index 210eec77e7ff..b94378afea25 100644 --- a/security/selinux/include/security.h +++ b/security/selinux/include/security.h @@ -34,7 +34,7 @@ #define POLICYDB_VERSION_MAX POLICYDB_VERSION_RANGETRANS #endif -struct sk_buff; +struct netlbl_lsm_secattr; extern int selinux_enabled; extern int selinux_mls_enabled; @@ -82,8 +82,6 @@ int security_netif_sid(char *name, u32 *if_sid, int security_node_sid(u16 domain, void *addr, u32 addrlen, u32 *out_sid); -void security_skb_extlbl_sid(struct sk_buff *skb, u32 base_sid, u32 *sid); - int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid, u16 tclass); @@ -102,5 +100,30 @@ int security_fs_use(const char *fstype, unsigned int *behavior, int security_genfs_sid(const char *fstype, char *name, u16 sclass, u32 *sid); +#ifdef CONFIG_NETLABEL +int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr, + u32 base_sid, + u32 *sid); + +int security_netlbl_sid_to_secattr(u32 sid, + struct netlbl_lsm_secattr *secattr); +#else +static inline int security_netlbl_secattr_to_sid( + struct netlbl_lsm_secattr *secattr, + u32 base_sid, + u32 *sid) +{ + return -EIDRM; +} + +static inline int security_netlbl_sid_to_secattr(u32 sid, + struct netlbl_lsm_secattr *secattr) +{ + return -ENOENT; +} +#endif /* CONFIG_NETLABEL */ + +const char *security_get_initial_sid_context(u32 sid); + #endif /* _SELINUX_SECURITY_H_ */ diff --git a/security/selinux/netlabel.c b/security/selinux/netlabel.c new file mode 100644 index 000000000000..bf8750791dd1 --- /dev/null +++ b/security/selinux/netlabel.c @@ -0,0 +1,363 @@ +/* + * SELinux NetLabel Support + * + * This file provides the necessary glue to tie NetLabel into the SELinux + * subsystem. + * + * Author: Paul Moore <paul.moore@hp.com> + * + */ + +/* + * (c) Copyright Hewlett-Packard Development Company, L.P., 2007 + * + * 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/spinlock.h> +#include <linux/rcupdate.h> +#include <net/sock.h> +#include <net/netlabel.h> + +#include "objsec.h" +#include "security.h" + +/** + * selinux_netlbl_socket_setsid - Label a socket using the NetLabel mechanism + * @sock: the socket to label + * @sid: the SID to use + * + * Description: + * Attempt to label a socket using the NetLabel mechanism using the given + * SID. Returns zero values on success, negative values on failure. The + * caller is responsibile for calling rcu_read_lock() before calling this + * this function and rcu_read_unlock() after this function returns. + * + */ +static int selinux_netlbl_socket_setsid(struct socket *sock, u32 sid) +{ + int rc; + struct sk_security_struct *sksec = sock->sk->sk_security; + struct netlbl_lsm_secattr secattr; + + rc = security_netlbl_sid_to_secattr(sid, &secattr); + if (rc != 0) + return rc; + + rc = netlbl_socket_setattr(sock, &secattr); + if (rc == 0) { + spin_lock_bh(&sksec->nlbl_lock); + sksec->nlbl_state = NLBL_LABELED; + spin_unlock_bh(&sksec->nlbl_lock); + } + + return rc; +} + +/** + * selinux_netlbl_cache_invalidate - Invalidate the NetLabel cache + * + * Description: + * Invalidate the NetLabel security attribute mapping cache. + * + */ +void selinux_netlbl_cache_invalidate(void) +{ + netlbl_cache_invalidate(); +} + +/** + * selinux_netlbl_sk_security_reset - Reset the NetLabel fields + * @ssec: the sk_security_struct + * @family: the socket family + * + * Description: + * Called when the NetLabel state of a sk_security_struct needs to be reset. + * The caller is responsibile for all the NetLabel sk_security_struct locking. + * + */ +void selinux_netlbl_sk_security_reset(struct sk_security_struct *ssec, + int family) +{ + if (family == PF_INET) + ssec->nlbl_state = NLBL_REQUIRE; + else + ssec->nlbl_state = NLBL_UNSET; +} + +/** + * selinux_netlbl_sk_security_init - Setup the NetLabel fields + * @ssec: the sk_security_struct + * @family: the socket family + * + * Description: + * Called when a new sk_security_struct is allocated to initialize the NetLabel + * fields. + * + */ +void selinux_netlbl_sk_security_init(struct sk_security_struct *ssec, + int family) +{ + /* No locking needed, we are the only one who has access to ssec */ + selinux_netlbl_sk_security_reset(ssec, family); + spin_lock_init(&ssec->nlbl_lock); +} + +/** + * selinux_netlbl_sk_security_clone - Copy the NetLabel fields + * @ssec: the original sk_security_struct + * @newssec: the cloned sk_security_struct + * + * Description: + * Clone the NetLabel specific sk_security_struct fields from @ssec to + * @newssec. + * + */ +void selinux_netlbl_sk_security_clone(struct sk_security_struct *ssec, + struct sk_security_struct *newssec) +{ + /* We don't need to take newssec->nlbl_lock because we are the only + * thread with access to newssec, but we do need to take the RCU read + * lock as other threads could have access to ssec */ + rcu_read_lock(); + selinux_netlbl_sk_security_reset(newssec, ssec->sk->sk_family); + newssec->sclass = ssec->sclass; + rcu_read_unlock(); +} + +/** + * selinux_netlbl_skbuff_getsid - Get the sid of a packet using NetLabel + * @skb: the packet + * @base_sid: the SELinux SID to use as a context for MLS only attributes + * @sid: the SID + * + * Description: + * Call the NetLabel mechanism to get the security attributes of the given + * packet and use those attributes to determine the correct context/SID to + * assign to the packet. Returns zero on success, negative values on failure. + * + */ +int selinux_netlbl_skbuff_getsid(struct sk_buff *skb, u32 base_sid, u32 *sid) +{ + int rc; + struct netlbl_lsm_secattr secattr; + + netlbl_secattr_init(&secattr); + rc = netlbl_skbuff_getattr(skb, &secattr); + if (rc == 0 && secattr.flags != NETLBL_SECATTR_NONE) + rc = security_netlbl_secattr_to_sid(&secattr, + base_sid, + sid); + else + *sid = SECSID_NULL; + netlbl_secattr_destroy(&secattr); + + return rc; +} + +/** + * selinux_netlbl_sock_graft - Netlabel the new socket + * @sk: the new connection + * @sock: the new socket + * + * Description: + * The connection represented by @sk is being grafted onto @sock so set the + * socket's NetLabel to match the SID of @sk. + * + */ +void selinux_netlbl_sock_graft(struct sock *sk, struct socket *sock) +{ + struct inode_security_struct *isec = SOCK_INODE(sock)->i_security; + struct sk_security_struct *sksec = sk->sk_security; + struct netlbl_lsm_secattr secattr; + u32 nlbl_peer_sid; + + sksec->sclass = isec->sclass; + + rcu_read_lock(); + + if (sksec->nlbl_state != NLBL_REQUIRE) { + rcu_read_unlock(); + return; + } + + netlbl_secattr_init(&secattr); + if (netlbl_sock_getattr(sk, &secattr) == 0 && + secattr.flags != NETLBL_SECATTR_NONE && + security_netlbl_secattr_to_sid(&secattr, + SECINITSID_UNLABELED, + &nlbl_peer_sid) == 0) + sksec->peer_sid = nlbl_peer_sid; + netlbl_secattr_destroy(&secattr); + + /* Try to set the NetLabel on the socket to save time later, if we fail + * here we will pick up the pieces in later calls to + * selinux_netlbl_inode_permission(). */ + selinux_netlbl_socket_setsid(sock, sksec->sid); + + rcu_read_unlock(); +} + +/** + * selinux_netlbl_socket_post_create - Label a socket using NetLabel + * @sock: the socket to label + * + * Description: + * Attempt to label a socket using the NetLabel mechanism using the given + * SID. Returns zero values on success, negative values on failure. + * + */ +int selinux_netlbl_socket_post_create(struct socket *sock) +{ + int rc = 0; + struct inode_security_struct *isec = SOCK_INODE(sock)->i_security; + struct sk_security_struct *sksec = sock->sk->sk_security; + + sksec->sclass = isec->sclass; + + rcu_read_lock(); + if (sksec->nlbl_state == NLBL_REQUIRE) + rc = selinux_netlbl_socket_setsid(sock, sksec->sid); + rcu_read_unlock(); + + return rc; +} + +/** + * selinux_netlbl_inode_permission - Verify the socket is NetLabel labeled + * @inode: the file descriptor's inode + * @mask: the permission mask + * + * Description: + * Looks at a file's inode and if it is marked as a socket protected by + * NetLabel then verify that the socket has been labeled, if not try to label + * the socket now with the inode's SID. Returns zero on success, negative + * values on failure. + * + */ +int selinux_netlbl_inode_permission(struct inode *inode, int mask) +{ + int rc; + struct sk_security_struct *sksec; + struct socket *sock; + + if (!S_ISSOCK(inode->i_mode) || + ((mask & (MAY_WRITE | MAY_APPEND)) == 0)) + return 0; + sock = SOCKET_I(inode); + sksec = sock->sk->sk_security; + + rcu_read_lock(); + if (sksec->nlbl_state != NLBL_REQUIRE) { + rcu_read_unlock(); + return 0; + } + local_bh_disable(); + bh_lock_sock_nested(sock->sk); + rc = selinux_netlbl_socket_setsid(sock, sksec->sid); + bh_unlock_sock(sock->sk); + local_bh_enable(); + rcu_read_unlock(); + + return rc; +} + +/** + * selinux_netlbl_sock_rcv_skb - Do an inbound access check using NetLabel + * @sksec: the sock's sk_security_struct + * @skb: the packet + * @ad: the audit data + * + * Description: + * Fetch the NetLabel security attributes from @skb and perform an access check + * against the receiving socket. Returns zero on success, negative values on + * error. + * + */ +int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, + struct sk_buff *skb, + struct avc_audit_data *ad) +{ + int rc; + u32 netlbl_sid; + u32 recv_perm; + + rc = selinux_netlbl_skbuff_getsid(skb, + SECINITSID_UNLABELED, + &netlbl_sid); + if (rc != 0) + return rc; + + if (netlbl_sid == SECSID_NULL) + return 0; + + switch (sksec->sclass) { + case SECCLASS_UDP_SOCKET: + recv_perm = UDP_SOCKET__RECVFROM; + break; + case SECCLASS_TCP_SOCKET: + recv_perm = TCP_SOCKET__RECVFROM; + break; + default: + recv_perm = RAWIP_SOCKET__RECVFROM; + } + + rc = avc_has_perm(sksec->sid, + netlbl_sid, + sksec->sclass, + recv_perm, + ad); + if (rc == 0) + return 0; + + netlbl_skbuff_err(skb, rc); + return rc; +} + +/** + * selinux_netlbl_socket_setsockopt - Do not allow users to remove a NetLabel + * @sock: the socket + * @level: the socket level or protocol + * @optname: the socket option name + * + * Description: + * Check the setsockopt() call and if the user is trying to replace the IP + * options on a socket and a NetLabel is in place for the socket deny the + * access; otherwise allow the access. Returns zero when the access is + * allowed, -EACCES when denied, and other negative values on error. + * + */ +int selinux_netlbl_socket_setsockopt(struct socket *sock, + int level, + int optname) +{ + int rc = 0; + struct sk_security_struct *sksec = sock->sk->sk_security; + struct netlbl_lsm_secattr secattr; + + rcu_read_lock(); + if (level == IPPROTO_IP && optname == IP_OPTIONS && + sksec->nlbl_state == NLBL_LABELED) { + netlbl_secattr_init(&secattr); + rc = netlbl_socket_getattr(sock, &secattr); + if (rc == 0 && secattr.flags != NETLBL_SECATTR_NONE) + rc = -EACCES; + netlbl_secattr_destroy(&secattr); + } + rcu_read_unlock(); + + return rc; +} diff --git a/security/selinux/netlink.c b/security/selinux/netlink.c index e203883406dd..f49046de63a2 100644 --- a/security/selinux/netlink.c +++ b/security/selinux/netlink.c @@ -66,7 +66,7 @@ static void selnl_add_payload(struct nlmsghdr *nlh, int len, int msgtype, void * static void selnl_notify(int msgtype, void *data) { int len; - unsigned char *tmp; + sk_buff_data_t tmp; struct sk_buff *skb; struct nlmsghdr *nlh; @@ -104,7 +104,7 @@ void selnl_notify_policyload(u32 seqno) static int __init selnl_init(void) { - selnl = netlink_kernel_create(NETLINK_SELINUX, SELNLGRP_MAX, NULL, + selnl = netlink_kernel_create(NETLINK_SELINUX, SELNLGRP_MAX, NULL, NULL, THIS_MODULE); if (selnl == NULL) panic("SELinux: Cannot create netlink socket."); diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c index 93b3177c7585..aca099aa2ed3 100644 --- a/security/selinux/selinuxfs.c +++ b/security/selinux/selinuxfs.c @@ -96,12 +96,18 @@ enum sel_inos { SEL_COMMIT_BOOLS, /* commit new boolean values */ SEL_MLS, /* return if MLS policy is enabled */ SEL_DISABLE, /* disable SELinux until next reboot */ - SEL_AVC, /* AVC management directory */ SEL_MEMBER, /* compute polyinstantiation membership decision */ SEL_CHECKREQPROT, /* check requested protection, not kernel-applied one */ SEL_COMPAT_NET, /* whether to use old compat network packet controls */ + SEL_INO_NEXT, /* The next inode number to use */ }; +static unsigned long sel_last_ino = SEL_INO_NEXT - 1; + +#define SEL_INITCON_INO_OFFSET 0x01000000 +#define SEL_BOOL_INO_OFFSET 0x02000000 +#define SEL_INO_MASK 0x00ffffff + #define TMPBUFLEN 12 static ssize_t sel_read_enforce(struct file *filp, char __user *buf, size_t count, loff_t *ppos) @@ -777,8 +783,6 @@ static struct inode *sel_make_inode(struct super_block *sb, int mode) return ret; } -#define BOOL_INO_OFFSET 30 - static ssize_t sel_read_bool(struct file *filep, char __user *buf, size_t count, loff_t *ppos) { @@ -806,14 +810,14 @@ static ssize_t sel_read_bool(struct file *filep, char __user *buf, } inode = filep->f_path.dentry->d_inode; - cur_enforcing = security_get_bool_value(inode->i_ino - BOOL_INO_OFFSET); + cur_enforcing = security_get_bool_value(inode->i_ino&SEL_INO_MASK); if (cur_enforcing < 0) { ret = cur_enforcing; goto out; } length = scnprintf(page, PAGE_SIZE, "%d %d", cur_enforcing, - bool_pending_values[inode->i_ino - BOOL_INO_OFFSET]); + bool_pending_values[inode->i_ino&SEL_INO_MASK]); ret = simple_read_from_buffer(buf, count, ppos, page, length); out: mutex_unlock(&sel_mutex); @@ -865,7 +869,7 @@ static ssize_t sel_write_bool(struct file *filep, const char __user *buf, new_value = 1; inode = filep->f_path.dentry->d_inode; - bool_pending_values[inode->i_ino - BOOL_INO_OFFSET] = new_value; + bool_pending_values[inode->i_ino&SEL_INO_MASK] = new_value; length = count; out: @@ -1029,7 +1033,7 @@ static int sel_make_bools(void) isec->sid = sid; isec->initialized = 1; inode->i_fop = &sel_bool_ops; - inode->i_ino = i + BOOL_INO_OFFSET; + inode->i_ino = i|SEL_BOOL_INO_OFFSET; d_add(dentry, inode); } bool_num = num; @@ -1234,6 +1238,56 @@ static int sel_make_avc_files(struct dentry *dir) goto out; } inode->i_fop = files[i].ops; + inode->i_ino = ++sel_last_ino; + d_add(dentry, inode); + } +out: + return ret; +} + +static ssize_t sel_read_initcon(struct file * file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct inode *inode; + char *con; + u32 sid, len; + ssize_t ret; + + inode = file->f_path.dentry->d_inode; + sid = inode->i_ino&SEL_INO_MASK; + ret = security_sid_to_context(sid, &con, &len); + if (ret < 0) + return ret; + + ret = simple_read_from_buffer(buf, count, ppos, con, len); + kfree(con); + return ret; +} + +static const struct file_operations sel_initcon_ops = { + .read = sel_read_initcon, +}; + +static int sel_make_initcon_files(struct dentry *dir) +{ + int i, ret = 0; + + for (i = 1; i <= SECINITSID_NUM; i++) { + struct inode *inode; + struct dentry *dentry; + dentry = d_alloc_name(dir, security_get_initial_sid_context(i)); + if (!dentry) { + ret = -ENOMEM; + goto out; + } + + inode = sel_make_inode(dir->d_sb, S_IFREG|S_IRUGO); + if (!inode) { + ret = -ENOMEM; + goto out; + } + inode->i_fop = &sel_initcon_ops; + inode->i_ino = i|SEL_INITCON_INO_OFFSET; d_add(dentry, inode); } out: @@ -1252,6 +1306,7 @@ static int sel_make_dir(struct inode *dir, struct dentry *dentry) } inode->i_op = &simple_dir_inode_operations; inode->i_fop = &simple_dir_operations; + inode->i_ino = ++sel_last_ino; /* directory inodes start off with i_nlink == 2 (for "." entry) */ inc_nlink(inode); d_add(dentry, inode); @@ -1314,6 +1369,7 @@ static int sel_fill_super(struct super_block * sb, void * data, int silent) ret = -ENOMEM; goto err; } + inode->i_ino = ++sel_last_ino; isec = (struct inode_security_struct*)inode->i_security; isec->sid = SECINITSID_DEVNULL; isec->sclass = SECCLASS_CHR_FILE; @@ -1336,6 +1392,21 @@ static int sel_fill_super(struct super_block * sb, void * data, int silent) ret = sel_make_avc_files(dentry); if (ret) goto err; + + dentry = d_alloc_name(sb->s_root, "initial_contexts"); + if (!dentry) { + ret = -ENOMEM; + goto err; + } + + ret = sel_make_dir(root_inode, dentry); + if (ret) + goto err; + + ret = sel_make_initcon_files(dentry); + if (ret) + goto err; + out: return ret; err: diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index 1e52356664d6..40660ffd49b6 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -39,7 +39,6 @@ #include <linux/sched.h> #include <linux/audit.h> #include <linux/mutex.h> -#include <net/sock.h> #include <net/netlabel.h> #include "flask.h" @@ -53,7 +52,7 @@ #include "conditional.h" #include "mls.h" #include "objsec.h" -#include "selinux_netlabel.h" +#include "netlabel.h" #include "xfrm.h" #include "ebitmap.h" @@ -594,6 +593,13 @@ static int context_struct_to_string(struct context *context, char **scontext, u3 #include "initial_sid_to_string.h" +const char *security_get_initial_sid_context(u32 sid) +{ + if (unlikely(sid > SECINITSID_NUM)) + return NULL; + return initial_sid_to_string[sid]; +} + /** * security_sid_to_context - Obtain a context for a given SID. * @sid: security identifier, SID @@ -1050,6 +1056,8 @@ static int validate_classes(struct policydb *p) for (i = 1; i < kdefs->cts_len; i++) { def_class = kdefs->class_to_string[i]; + if (!def_class) + continue; if (i > p->p_classes.nprim) { printk(KERN_INFO "security: class %s not defined in policy\n", @@ -1249,6 +1257,7 @@ bad: } extern void selinux_complete_init(void); +static int security_preserve_bools(struct policydb *p); /** * security_load_policy - Load a security policy configuration. @@ -1325,6 +1334,12 @@ int security_load_policy(void *data, size_t len) goto err; } + rc = security_preserve_bools(&newpolicydb); + if (rc) { + printk(KERN_ERR "security: unable to preserve booleans\n"); + goto err; + } + /* Clone the SID table. */ sidtab_shutdown(&sidtab); if (sidtab_map(&sidtab, clone_sid, &newsidtab)) { @@ -1882,6 +1897,37 @@ out: return rc; } +static int security_preserve_bools(struct policydb *p) +{ + int rc, nbools = 0, *bvalues = NULL, i; + char **bnames = NULL; + struct cond_bool_datum *booldatum; + struct cond_node *cur; + + rc = security_get_bools(&nbools, &bnames, &bvalues); + if (rc) + goto out; + for (i = 0; i < nbools; i++) { + booldatum = hashtab_search(p->p_bools.table, bnames[i]); + if (booldatum) + booldatum->state = bvalues[i]; + } + for (cur = p->cond_list; cur != NULL; cur = cur->next) { + rc = evaluate_cond_node(p, cur); + if (rc) + goto out; + } + +out: + if (bnames) { + for (i = 0; i < nbools; i++) + kfree(bnames[i]); + } + kfree(bnames); + kfree(bvalues); + return rc; +} + /* * security_sid_mls_copy() - computes a new sid based on the given * sid and the mls portion of mls_sid. @@ -2198,41 +2244,15 @@ void selinux_audit_set_callback(int (*callback)(void)) aurule_callback = callback; } -/** - * security_skb_extlbl_sid - Determine the external label of a packet - * @skb: the packet - * @base_sid: the SELinux SID to use as a context for MLS only external labels - * @sid: the packet's SID - * - * Description: - * Check the various different forms of external packet labeling and determine - * the external SID for the packet. - * - */ -void security_skb_extlbl_sid(struct sk_buff *skb, u32 base_sid, u32 *sid) -{ - u32 xfrm_sid; - u32 nlbl_sid; - - selinux_skb_xfrm_sid(skb, &xfrm_sid); - if (selinux_netlbl_skbuff_getsid(skb, - (xfrm_sid == SECSID_NULL ? - base_sid : xfrm_sid), - &nlbl_sid) != 0) - nlbl_sid = SECSID_NULL; - - *sid = (nlbl_sid == SECSID_NULL ? xfrm_sid : nlbl_sid); -} - #ifdef CONFIG_NETLABEL /* - * This is the structure we store inside the NetLabel cache block. + * NetLabel cache structure */ -#define NETLBL_CACHE(x) ((struct netlbl_cache *)(x)) +#define NETLBL_CACHE(x) ((struct selinux_netlbl_cache *)(x)) #define NETLBL_CACHE_T_NONE 0 #define NETLBL_CACHE_T_SID 1 #define NETLBL_CACHE_T_MLS 2 -struct netlbl_cache { +struct selinux_netlbl_cache { u32 type; union { u32 sid; @@ -2241,7 +2261,7 @@ struct netlbl_cache { }; /** - * selinux_netlbl_cache_free - Free the NetLabel cached data + * security_netlbl_cache_free - Free the NetLabel cached data * @data: the data to free * * Description: @@ -2249,9 +2269,9 @@ struct netlbl_cache { * netlbl_lsm_cache structure. * */ -static void selinux_netlbl_cache_free(const void *data) +static void security_netlbl_cache_free(const void *data) { - struct netlbl_cache *cache; + struct selinux_netlbl_cache *cache; if (data == NULL) return; @@ -2266,33 +2286,33 @@ static void selinux_netlbl_cache_free(const void *data) } /** - * selinux_netlbl_cache_add - Add an entry to the NetLabel cache - * @skb: the packet + * security_netlbl_cache_add - Add an entry to the NetLabel cache + * @secattr: the NetLabel packet security attributes * @ctx: the SELinux context * * Description: * Attempt to cache the context in @ctx, which was derived from the packet in - * @skb, in the NetLabel subsystem cache. + * @skb, in the NetLabel subsystem cache. This function assumes @secattr has + * already been initialized. * */ -static void selinux_netlbl_cache_add(struct sk_buff *skb, struct context *ctx) +static void security_netlbl_cache_add(struct netlbl_lsm_secattr *secattr, + struct context *ctx) { - struct netlbl_cache *cache = NULL; - struct netlbl_lsm_secattr secattr; + struct selinux_netlbl_cache *cache = NULL; - netlbl_secattr_init(&secattr); - secattr.cache = netlbl_secattr_cache_alloc(GFP_ATOMIC); - if (secattr.cache == NULL) - goto netlbl_cache_add_return; + secattr->cache = netlbl_secattr_cache_alloc(GFP_ATOMIC); + if (secattr->cache == NULL) + return; cache = kzalloc(sizeof(*cache), GFP_ATOMIC); if (cache == NULL) - goto netlbl_cache_add_return; + return; cache->type = NETLBL_CACHE_T_MLS; if (ebitmap_cpy(&cache->data.mls_label.level[0].cat, &ctx->range.level[0].cat) != 0) - goto netlbl_cache_add_return; + return; cache->data.mls_label.level[1].cat.highbit = cache->data.mls_label.level[0].cat.highbit; cache->data.mls_label.level[1].cat.node = @@ -2300,52 +2320,40 @@ static void selinux_netlbl_cache_add(struct sk_buff *skb, struct context *ctx) cache->data.mls_label.level[0].sens = ctx->range.level[0].sens; cache->data.mls_label.level[1].sens = ctx->range.level[0].sens; - secattr.cache->free = selinux_netlbl_cache_free; - secattr.cache->data = (void *)cache; - secattr.flags = NETLBL_SECATTR_CACHE; - - netlbl_cache_add(skb, &secattr); - -netlbl_cache_add_return: - netlbl_secattr_destroy(&secattr); + secattr->cache->free = security_netlbl_cache_free; + secattr->cache->data = (void *)cache; + secattr->flags |= NETLBL_SECATTR_CACHE; } /** - * selinux_netlbl_cache_invalidate - Invalidate the NetLabel cache - * - * Description: - * Invalidate the NetLabel security attribute mapping cache. - * - */ -void selinux_netlbl_cache_invalidate(void) -{ - netlbl_cache_invalidate(); -} - -/** - * selinux_netlbl_secattr_to_sid - Convert a NetLabel secattr to a SELinux SID - * @skb: the network packet + * security_netlbl_secattr_to_sid - Convert a NetLabel secattr to a SELinux SID * @secattr: the NetLabel packet security attributes * @base_sid: the SELinux SID to use as a context for MLS only attributes * @sid: the SELinux SID * * Description: - * Convert the given NetLabel packet security attributes in @secattr into a + * Convert the given NetLabel security attributes in @secattr into a * SELinux SID. If the @secattr field does not contain a full SELinux - * SID/context then use the context in @base_sid as the foundation. If @skb - * is not NULL attempt to cache as much data as possibile. Returns zero on - * success, negative values on failure. + * SID/context then use the context in @base_sid as the foundation. If + * possibile the 'cache' field of @secattr is set and the CACHE flag is set; + * this is to allow the @secattr to be used by NetLabel to cache the secattr to + * SID conversion for future lookups. Returns zero on success, negative + * values on failure. * */ -static int selinux_netlbl_secattr_to_sid(struct sk_buff *skb, - struct netlbl_lsm_secattr *secattr, - u32 base_sid, - u32 *sid) +int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr, + u32 base_sid, + u32 *sid) { int rc = -EIDRM; struct context *ctx; struct context ctx_new; - struct netlbl_cache *cache; + struct selinux_netlbl_cache *cache; + + if (!ss_initialized) { + *sid = SECSID_NULL; + return 0; + } POLICY_RDLOCK; @@ -2410,8 +2418,8 @@ static int selinux_netlbl_secattr_to_sid(struct sk_buff *skb, if (rc != 0) goto netlbl_secattr_to_sid_return_cleanup; - if (skb != NULL) - selinux_netlbl_cache_add(skb, &ctx_new); + security_netlbl_cache_add(secattr, &ctx_new); + ebitmap_destroy(&ctx_new.range.level[0].cat); } else { *sid = SECSID_NULL; @@ -2427,338 +2435,43 @@ netlbl_secattr_to_sid_return_cleanup: } /** - * selinux_netlbl_skbuff_getsid - Get the sid of a packet using NetLabel - * @skb: the packet - * @base_sid: the SELinux SID to use as a context for MLS only attributes - * @sid: the SID - * - * Description: - * Call the NetLabel mechanism to get the security attributes of the given - * packet and use those attributes to determine the correct context/SID to - * assign to the packet. Returns zero on success, negative values on failure. - * - */ -int selinux_netlbl_skbuff_getsid(struct sk_buff *skb, u32 base_sid, u32 *sid) -{ - int rc; - struct netlbl_lsm_secattr secattr; - - netlbl_secattr_init(&secattr); - rc = netlbl_skbuff_getattr(skb, &secattr); - if (rc == 0 && secattr.flags != NETLBL_SECATTR_NONE) - rc = selinux_netlbl_secattr_to_sid(skb, - &secattr, - base_sid, - sid); - else - *sid = SECSID_NULL; - netlbl_secattr_destroy(&secattr); - - return rc; -} - -/** - * selinux_netlbl_socket_setsid - Label a socket using the NetLabel mechanism - * @sock: the socket to label - * @sid: the SID to use + * security_netlbl_sid_to_secattr - Convert a SELinux SID to a NetLabel secattr + * @sid: the SELinux SID + * @secattr: the NetLabel packet security attributes * * Description: - * Attempt to label a socket using the NetLabel mechanism using the given - * SID. Returns zero values on success, negative values on failure. The - * caller is responsibile for calling rcu_read_lock() before calling this - * this function and rcu_read_unlock() after this function returns. + * Convert the given SELinux SID in @sid into a NetLabel security attribute. + * Returns zero on success, negative values on failure. * */ -static int selinux_netlbl_socket_setsid(struct socket *sock, u32 sid) +int security_netlbl_sid_to_secattr(u32 sid, struct netlbl_lsm_secattr *secattr) { int rc = -ENOENT; - struct sk_security_struct *sksec = sock->sk->sk_security; - struct netlbl_lsm_secattr secattr; struct context *ctx; + netlbl_secattr_init(secattr); + if (!ss_initialized) return 0; - netlbl_secattr_init(&secattr); - POLICY_RDLOCK; - ctx = sidtab_search(&sidtab, sid); if (ctx == NULL) - goto netlbl_socket_setsid_return; - - secattr.domain = kstrdup(policydb.p_type_val_to_name[ctx->type - 1], - GFP_ATOMIC); - secattr.flags |= NETLBL_SECATTR_DOMAIN; - mls_export_netlbl_lvl(ctx, &secattr); - rc = mls_export_netlbl_cat(ctx, &secattr); + goto netlbl_sid_to_secattr_failure; + secattr->domain = kstrdup(policydb.p_type_val_to_name[ctx->type - 1], + GFP_ATOMIC); + secattr->flags |= NETLBL_SECATTR_DOMAIN; + mls_export_netlbl_lvl(ctx, secattr); + rc = mls_export_netlbl_cat(ctx, secattr); if (rc != 0) - goto netlbl_socket_setsid_return; - - rc = netlbl_socket_setattr(sock, &secattr); - if (rc == 0) { - spin_lock_bh(&sksec->nlbl_lock); - sksec->nlbl_state = NLBL_LABELED; - spin_unlock_bh(&sksec->nlbl_lock); - } - -netlbl_socket_setsid_return: + goto netlbl_sid_to_secattr_failure; POLICY_RDUNLOCK; - netlbl_secattr_destroy(&secattr); - return rc; -} - -/** - * selinux_netlbl_sk_security_reset - Reset the NetLabel fields - * @ssec: the sk_security_struct - * @family: the socket family - * - * Description: - * Called when the NetLabel state of a sk_security_struct needs to be reset. - * The caller is responsibile for all the NetLabel sk_security_struct locking. - * - */ -void selinux_netlbl_sk_security_reset(struct sk_security_struct *ssec, - int family) -{ - if (family == PF_INET) - ssec->nlbl_state = NLBL_REQUIRE; - else - ssec->nlbl_state = NLBL_UNSET; -} -/** - * selinux_netlbl_sk_security_init - Setup the NetLabel fields - * @ssec: the sk_security_struct - * @family: the socket family - * - * Description: - * Called when a new sk_security_struct is allocated to initialize the NetLabel - * fields. - * - */ -void selinux_netlbl_sk_security_init(struct sk_security_struct *ssec, - int family) -{ - /* No locking needed, we are the only one who has access to ssec */ - selinux_netlbl_sk_security_reset(ssec, family); - spin_lock_init(&ssec->nlbl_lock); -} - -/** - * selinux_netlbl_sk_security_clone - Copy the NetLabel fields - * @ssec: the original sk_security_struct - * @newssec: the cloned sk_security_struct - * - * Description: - * Clone the NetLabel specific sk_security_struct fields from @ssec to - * @newssec. - * - */ -void selinux_netlbl_sk_security_clone(struct sk_security_struct *ssec, - struct sk_security_struct *newssec) -{ - /* We don't need to take newssec->nlbl_lock because we are the only - * thread with access to newssec, but we do need to take the RCU read - * lock as other threads could have access to ssec */ - rcu_read_lock(); - selinux_netlbl_sk_security_reset(newssec, ssec->sk->sk_family); - newssec->sclass = ssec->sclass; - rcu_read_unlock(); -} - -/** - * selinux_netlbl_socket_post_create - Label a socket using NetLabel - * @sock: the socket to label - * - * Description: - * Attempt to label a socket using the NetLabel mechanism using the given - * SID. Returns zero values on success, negative values on failure. - * - */ -int selinux_netlbl_socket_post_create(struct socket *sock) -{ - int rc = 0; - struct inode_security_struct *isec = SOCK_INODE(sock)->i_security; - struct sk_security_struct *sksec = sock->sk->sk_security; - - sksec->sclass = isec->sclass; - - rcu_read_lock(); - if (sksec->nlbl_state == NLBL_REQUIRE) - rc = selinux_netlbl_socket_setsid(sock, sksec->sid); - rcu_read_unlock(); - - return rc; -} - -/** - * selinux_netlbl_sock_graft - Netlabel the new socket - * @sk: the new connection - * @sock: the new socket - * - * Description: - * The connection represented by @sk is being grafted onto @sock so set the - * socket's NetLabel to match the SID of @sk. - * - */ -void selinux_netlbl_sock_graft(struct sock *sk, struct socket *sock) -{ - struct inode_security_struct *isec = SOCK_INODE(sock)->i_security; - struct sk_security_struct *sksec = sk->sk_security; - struct netlbl_lsm_secattr secattr; - u32 nlbl_peer_sid; - - sksec->sclass = isec->sclass; - - rcu_read_lock(); - - if (sksec->nlbl_state != NLBL_REQUIRE) { - rcu_read_unlock(); - return; - } - - netlbl_secattr_init(&secattr); - if (netlbl_sock_getattr(sk, &secattr) == 0 && - secattr.flags != NETLBL_SECATTR_NONE && - selinux_netlbl_secattr_to_sid(NULL, - &secattr, - SECINITSID_UNLABELED, - &nlbl_peer_sid) == 0) - sksec->peer_sid = nlbl_peer_sid; - netlbl_secattr_destroy(&secattr); - - /* Try to set the NetLabel on the socket to save time later, if we fail - * here we will pick up the pieces in later calls to - * selinux_netlbl_inode_permission(). */ - selinux_netlbl_socket_setsid(sock, sksec->sid); - - rcu_read_unlock(); -} - -/** - * selinux_netlbl_inode_permission - Verify the socket is NetLabel labeled - * @inode: the file descriptor's inode - * @mask: the permission mask - * - * Description: - * Looks at a file's inode and if it is marked as a socket protected by - * NetLabel then verify that the socket has been labeled, if not try to label - * the socket now with the inode's SID. Returns zero on success, negative - * values on failure. - * - */ -int selinux_netlbl_inode_permission(struct inode *inode, int mask) -{ - int rc; - struct sk_security_struct *sksec; - struct socket *sock; - - if (!S_ISSOCK(inode->i_mode) || - ((mask & (MAY_WRITE | MAY_APPEND)) == 0)) - return 0; - sock = SOCKET_I(inode); - sksec = sock->sk->sk_security; - - rcu_read_lock(); - if (sksec->nlbl_state != NLBL_REQUIRE) { - rcu_read_unlock(); - return 0; - } - local_bh_disable(); - bh_lock_sock_nested(sock->sk); - rc = selinux_netlbl_socket_setsid(sock, sksec->sid); - bh_unlock_sock(sock->sk); - local_bh_enable(); - rcu_read_unlock(); - - return rc; -} - -/** - * selinux_netlbl_sock_rcv_skb - Do an inbound access check using NetLabel - * @sksec: the sock's sk_security_struct - * @skb: the packet - * @ad: the audit data - * - * Description: - * Fetch the NetLabel security attributes from @skb and perform an access check - * against the receiving socket. Returns zero on success, negative values on - * error. - * - */ -int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, - struct sk_buff *skb, - struct avc_audit_data *ad) -{ - int rc; - u32 netlbl_sid; - u32 recv_perm; - - rc = selinux_netlbl_skbuff_getsid(skb, - SECINITSID_UNLABELED, - &netlbl_sid); - if (rc != 0) - return rc; - - if (netlbl_sid == SECSID_NULL) - return 0; - - switch (sksec->sclass) { - case SECCLASS_UDP_SOCKET: - recv_perm = UDP_SOCKET__RECVFROM; - break; - case SECCLASS_TCP_SOCKET: - recv_perm = TCP_SOCKET__RECVFROM; - break; - default: - recv_perm = RAWIP_SOCKET__RECVFROM; - } - - rc = avc_has_perm(sksec->sid, - netlbl_sid, - sksec->sclass, - recv_perm, - ad); - if (rc == 0) - return 0; - - netlbl_skbuff_err(skb, rc); - return rc; -} - -/** - * selinux_netlbl_socket_setsockopt - Do not allow users to remove a NetLabel - * @sock: the socket - * @level: the socket level or protocol - * @optname: the socket option name - * - * Description: - * Check the setsockopt() call and if the user is trying to replace the IP - * options on a socket and a NetLabel is in place for the socket deny the - * access; otherwise allow the access. Returns zero when the access is - * allowed, -EACCES when denied, and other negative values on error. - * - */ -int selinux_netlbl_socket_setsockopt(struct socket *sock, - int level, - int optname) -{ - int rc = 0; - struct sk_security_struct *sksec = sock->sk->sk_security; - struct netlbl_lsm_secattr secattr; - - rcu_read_lock(); - if (level == IPPROTO_IP && optname == IP_OPTIONS && - sksec->nlbl_state == NLBL_LABELED) { - netlbl_secattr_init(&secattr); - rc = netlbl_socket_getattr(sock, &secattr); - if (rc == 0 && secattr.flags != NETLBL_SECATTR_NONE) - rc = -EACCES; - netlbl_secattr_destroy(&secattr); - } - rcu_read_unlock(); + return 0; +netlbl_sid_to_secattr_failure: + POLICY_RDUNLOCK; + netlbl_secattr_destroy(secattr); return rc; } #endif /* CONFIG_NETLABEL */ |