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selinux: Support for the new TUN LSM hooks

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Add support for the new TUN LSM hooks: security_tun_dev_create(),
security_tun_dev_post_create() and security_tun_dev_attach().  This includes
the addition of a new object class, tun_socket, which represents the socks
associated with TUN devices.  The _tun_dev_create() and _tun_dev_post_create()
hooks are fairly similar to the standard socket functions but _tun_dev_attach()
is a bit special.  The _tun_dev_attach() is unique because it involves a
domain attaching to an existing TUN device and its associated tun_socket
object, an operation which does not exist with standard sockets and most
closely resembles a relabel operation.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Acked-by: Eric Paris <eparis@parisplace.org>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Paul Moore
2009-08-28 18:12:49 -04:00
committed by James Morris
parent 2b980dbd77
commit ed6d76e4c3
5 changed files with 83 additions and 2 deletions
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1
security/selinux/include/av_inherit.h
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@ -15,6 +15,7 @@
S_(SECCLASS_KEY_SOCKET, socket, 0x00400000UL)
S_(SECCLASS_UNIX_STREAM_SOCKET, socket, 0x00400000UL)
S_(SECCLASS_UNIX_DGRAM_SOCKET, socket, 0x00400000UL)
S_(SECCLASS_TUN_SOCKET, socket, 0x00400000UL)
S_(SECCLASS_IPC, ipc, 0x00000200UL)
S_(SECCLASS_SEM, ipc, 0x00000200UL)
S_(SECCLASS_MSGQ, ipc, 0x00000200UL)

22
security/selinux/include/av_permissions.h
View File

@ -423,6 +423,28 @@
#define UNIX_DGRAM_SOCKET__RECV_MSG 0x00080000UL
#define UNIX_DGRAM_SOCKET__SEND_MSG 0x00100000UL
#define UNIX_DGRAM_SOCKET__NAME_BIND 0x00200000UL
#define TUN_SOCKET__IOCTL 0x00000001UL
#define TUN_SOCKET__READ 0x00000002UL
#define TUN_SOCKET__WRITE 0x00000004UL
#define TUN_SOCKET__CREATE 0x00000008UL
#define TUN_SOCKET__GETATTR 0x00000010UL
#define TUN_SOCKET__SETATTR 0x00000020UL
#define TUN_SOCKET__LOCK 0x00000040UL
#define TUN_SOCKET__RELABELFROM 0x00000080UL
#define TUN_SOCKET__RELABELTO 0x00000100UL
#define TUN_SOCKET__APPEND 0x00000200UL
#define TUN_SOCKET__BIND 0x00000400UL
#define TUN_SOCKET__CONNECT 0x00000800UL
#define TUN_SOCKET__LISTEN 0x00001000UL
#define TUN_SOCKET__ACCEPT 0x00002000UL
#define TUN_SOCKET__GETOPT 0x00004000UL
#define TUN_SOCKET__SETOPT 0x00008000UL
#define TUN_SOCKET__SHUTDOWN 0x00010000UL
#define TUN_SOCKET__RECVFROM 0x00020000UL
#define TUN_SOCKET__SENDTO 0x00040000UL
#define TUN_SOCKET__RECV_MSG 0x00080000UL
#define TUN_SOCKET__SEND_MSG 0x00100000UL
#define TUN_SOCKET__NAME_BIND 0x00200000UL
#define PROCESS__FORK 0x00000001UL
#define PROCESS__TRANSITION 0x00000002UL
#define PROCESS__SIGCHLD 0x00000004UL

1
security/selinux/include/class_to_string.h
View File

@ -77,3 +77,4 @@
S_(NULL)
S_(NULL)
S_("kernel_service")
S_("tun_socket")

1
security/selinux/include/flask.h
View File

@ -53,6 +53,7 @@
#define SECCLASS_PEER 68
#define SECCLASS_CAPABILITY2 69
#define SECCLASS_KERNEL_SERVICE 74
#define SECCLASS_TUN_SOCKET 75
/*
* Security identifier indices for initial entities