This patch exports adds new functions to the in-kernel SELinux API in
support of the new secmark-based packet controls.
Please apply.
Signed-off-by: James Morris <[EMAIL PROTECTED]>
---
include/linux/selinux.h | 32 ++++++++++++++++++++++++++++++++
security/selinux/exports.c | 22 ++++++++++++++++++++++
2 files changed, 54 insertions(+)
diff -purN -X dontdiff linux-2.6.17-rc4-mm1.p/include/linux/selinux.h
linux-2.6.17-rc4-mm1.w/include/linux/selinux.h
--- linux-2.6.17-rc4-mm1.p/include/linux/selinux.h 2006-05-17
01:03:34.000000000 -0400
+++ linux-2.6.17-rc4-mm1.w/include/linux/selinux.h 2006-05-17
01:18:57.000000000 -0400
@@ -118,6 +118,27 @@ void selinux_get_ipc_sid(const struct ke
*/
void selinux_get_task_sid(struct task_struct *tsk, u32 *sid);
+/**
+ * selinux_string_to_sid - map a security context string to a security ID
+ * @str: the security context string to be mapped
+ * @sid: ID value returned via this.
+ *
+ * Returns 0 if successful, with the SID stored in sid. A value
+ * of zero for sid indicates no SID could be determined (but no error
+ * occurred).
+ */
+int selinux_string_to_sid(char *str, u32 *sid);
+
+/**
+ * selinux_relabel_packet_permission - check permission to relabel a packet
+ * @sid: ID value to be applied to network packet (via SECMARK, most
likely)
+ *
+ * Returns 0 if the current task is allowed to label packets with the
+ * supplied security ID. Note that it is implicit that the packet is
always
+ * being relabeled from the default unlabled value, and that the access
+ * control decision is made in the AVC.
+ */
+int selinux_relabel_packet_permission(u32 sid);
#else
@@ -172,6 +193,17 @@ static inline void selinux_get_task_sid(
*sid = 0;
}
+static inline int selinux_string_to_sid(const char *str, u32 *sid)
+{
+ *sid = 0;
+ return 0;
+}
+
+static inline int selinux_relabel_packet_permission(u32 sid)
+{
+ return 0;
+}
+
#endif /* CONFIG_SECURITY_SELINUX */
#endif /* _LINUX_SELINUX_H */
diff -purN -X dontdiff linux-2.6.17-rc4-mm1.p/security/selinux/exports.c
linux-2.6.17-rc4-mm1.w/security/selinux/exports.c
--- linux-2.6.17-rc4-mm1.p/security/selinux/exports.c 2006-05-17
01:03:34.000000000 -0400
+++ linux-2.6.17-rc4-mm1.w/security/selinux/exports.c 2006-05-17
01:18:57.000000000 -0400
@@ -72,3 +72,25 @@ void selinux_get_task_sid(struct task_st
*sid = 0;
}
+int selinux_string_to_sid(char *str, u32 *sid)
+{
+ if (selinux_enabled)
+ return security_context_to_sid(str, strlen(str), sid);
+ else {
+ *sid = 0;
+ return 0;
+ }
+}
+EXPORT_SYMBOL_GPL(selinux_string_to_sid);
+
+int selinux_relabel_packet_permission(u32 sid)
+{
+ if (selinux_enabled) {
+ struct task_security_struct *tsec = current->security;
+
+ return avc_has_perm(tsec->sid, sid, SECCLASS_PACKET,
+ PACKET__RELABELTO, NULL);
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(selinux_relabel_packet_permission);
-
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