projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 7420ed23 VY |
1 | /* |
| 2 | * SELinux interface to the NetLabel subsystem | |
| 3 | * | |
| 4 | * Author : Paul Moore <paul.moore@hp.com> | |
| 5 | * | |
| 6 | */ | |
| 7 | ||
| 8 | /* | |
| 9 | * (c) Copyright Hewlett-Packard Development Company, L.P., 2006 | |
| 10 | * | |
| 11 | * This program is free software; you can redistribute it and/or modify | |
| 12 | * it under the terms of the GNU General Public License as published by | |
| 13 | * the Free Software Foundation; either version 2 of the License, or | |
| 14 | * (at your option) any later version. | |
| 15 | * | |
| 16 | * This program is distributed in the hope that it will be useful, | |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
| 19 | * the GNU General Public License for more details. | |
| 20 | * | |
| 21 | * You should have received a copy of the GNU General Public License | |
| 22 | * along with this program; if not, write to the Free Software | |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 24 | * | |
| 25 | */ | |
| 26 | ||
| 27 | #ifndef _SELINUX_NETLABEL_H_ | |
| 28 | #define _SELINUX_NETLABEL_H_ | |
| 29 | ||
| 30 | #ifdef CONFIG_NETLABEL | |
| 31 | void selinux_netlbl_cache_invalidate(void); | |
| 32 | int selinux_netlbl_socket_post_create(struct socket *sock, | |
| 33 | int sock_family, | |
| 34 | u32 sid); | |
| 35 | void selinux_netlbl_sock_graft(struct sock *sk, struct socket *sock); | |
| 36 | u32 selinux_netlbl_inet_conn_request(struct sk_buff *skb, u32 sock_sid); | |
| 37 | int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, | |
| 38 | struct sk_buff *skb, | |
| 39 | struct avc_audit_data *ad); | |
| 40 | u32 selinux_netlbl_socket_getpeersec_stream(struct socket *sock); | |
| 41 | u32 selinux_netlbl_socket_getpeersec_dgram(struct sk_buff *skb); | |
| 42 | ||
| 43 | int __selinux_netlbl_inode_permission(struct inode *inode, int mask); | |
| 44 | /** | |
| 45 | * selinux_netlbl_inode_permission - Verify the socket is NetLabel labeled | |
| 46 | * @inode: the file descriptor's inode | |
| 47 | * @mask: the permission mask | |
| 48 | * | |
| 49 | * Description: | |
| 50 | * Looks at a file's inode and if it is marked as a socket protected by | |
| 51 | * NetLabel then verify that the socket has been labeled, if not try to label | |
| 52 | * the socket now with the inode's SID. Returns zero on success, negative | |
| 53 | * values on failure. | |
| 54 | * | |
| 55 | */ | |
| 56 | static inline int selinux_netlbl_inode_permission(struct inode *inode, | |
| 57 | int mask) | |
| 58 | { | |
| 59 | int rc = 0; | |
| 60 | struct inode_security_struct *isec; | |
| 61 | struct sk_security_struct *sksec; | |
| 62 | ||
| 63 | if (!S_ISSOCK(inode->i_mode)) | |
| 64 | return 0; | |
| 65 | ||
| 66 | isec = inode->i_security; | |
| 67 | sksec = SOCKET_I(inode)->sk->sk_security; | |
| 68 | down(&isec->sem); | |
| 69 | if (unlikely(sksec->nlbl_state == NLBL_REQUIRE && | |
| 70 | (mask & (MAY_WRITE | MAY_APPEND)))) | |
| 71 | rc = __selinux_netlbl_inode_permission(inode, mask); | |
| 72 | up(&isec->sem); | |
| 73 | ||
| 74 | return rc; | |
| 75 | } | |
| 76 | #else | |
| 77 | static inline void selinux_netlbl_cache_invalidate(void) | |
| 78 | { | |
| 79 | return; | |
| 80 | } | |
| 81 | ||
| 82 | static inline int selinux_netlbl_socket_post_create(struct socket *sock, | |
| 83 | int sock_family, | |
| 84 | u32 sid) | |
| 85 | { | |
| 86 | return 0; | |
| 87 | } | |
| 88 | ||
| 89 | static inline void selinux_netlbl_sock_graft(struct sock *sk, | |
| 90 | struct socket *sock) | |
| 91 | { | |
| 92 | return; | |
| 93 | } | |
| 94 | ||
| 95 | static inline u32 selinux_netlbl_inet_conn_request(struct sk_buff *skb, | |
| 96 | u32 sock_sid) | |
| 97 | { | |
| 98 | return SECSID_NULL; | |
| 99 | } | |
| 100 | ||
| 101 | static inline int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, | |
| 102 | struct sk_buff *skb, | |
| 103 | struct avc_audit_data *ad) | |
| 104 | { | |
| 105 | return 0; | |
| 106 | } | |
| 107 | ||
| 108 | static inline u32 selinux_netlbl_socket_getpeersec_stream(struct socket *sock) | |
| 109 | { | |
| 110 | return SECSID_NULL; | |
| 111 | } | |
| 112 | ||
| 113 | static inline u32 selinux_netlbl_socket_getpeersec_dgram(struct sk_buff *skb) | |
| 114 | { | |
| 115 | return SECSID_NULL; | |
| 116 | } | |
| 117 | ||
| 118 | static inline int selinux_netlbl_inode_permission(struct inode *inode, | |
| 119 | int mask) | |
| 120 | { | |
| 121 | return 0; | |
| 122 | } | |
| 123 | #endif /* CONFIG_NETLABEL */ | |
| 124 | ||
| 125 | #endif |