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authorDavid Howells <dhowells@redhat.com>2008-11-14 10:39:27 +1100
committerJames Morris <jmorris@namei.org>2008-11-14 10:39:27 +1100
commit1bfdc75ae077d60a01572a7781ec6264d55ab1b9 (patch)
tree627cbbca1232725bbea68677cb904bf36e73b35c /security/selinux/include
parent3b11a1decef07c19443d24ae926982bc8ec9f4c0 (diff)
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CRED: Add a kernel_service object class to SELinux
Add a 'kernel_service' object class to SELinux and give this object class two access vectors: 'use_as_override' and 'create_files_as'. The first vector is used to grant a process the right to nominate an alternate process security ID for the kernel to use as an override for the SELinux subjective security when accessing stuff on behalf of another process. For example, CacheFiles when accessing the cache on behalf on a process accessing an NFS file needs to use a subjective security ID appropriate to the cache rather then the one the calling process is using. The cachefilesd daemon will nominate the security ID to be used. The second vector is used to grant a process the right to nominate a file creation label for a kernel service to use. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/selinux/include')
-rw-r--r--security/selinux/include/av_perm_to_string.h2
-rw-r--r--security/selinux/include/av_permissions.h2
-rw-r--r--security/selinux/include/class_to_string.h5
-rw-r--r--security/selinux/include/flask.h1
4 files changed, 10 insertions, 0 deletions
diff --git a/security/selinux/include/av_perm_to_string.h b/security/selinux/include/av_perm_to_string.h
index 1223b4ff9be..c0c885427b9 100644
--- a/security/selinux/include/av_perm_to_string.h
+++ b/security/selinux/include/av_perm_to_string.h
@@ -176,3 +176,5 @@
S_(SECCLASS_DCCP_SOCKET, DCCP_SOCKET__NAME_CONNECT, "name_connect")
S_(SECCLASS_MEMPROTECT, MEMPROTECT__MMAP_ZERO, "mmap_zero")
S_(SECCLASS_PEER, PEER__RECV, "recv")
+ S_(SECCLASS_KERNEL_SERVICE, KERNEL_SERVICE__USE_AS_OVERRIDE, "use_as_override")
+ S_(SECCLASS_KERNEL_SERVICE, KERNEL_SERVICE__CREATE_FILES_AS, "create_files_as")
diff --git a/security/selinux/include/av_permissions.h b/security/selinux/include/av_permissions.h
index c4c51165c50..0ba79fe00e1 100644
--- a/security/selinux/include/av_permissions.h
+++ b/security/selinux/include/av_permissions.h
@@ -841,3 +841,5 @@
#define DCCP_SOCKET__NAME_CONNECT 0x00800000UL
#define MEMPROTECT__MMAP_ZERO 0x00000001UL
#define PEER__RECV 0x00000001UL
+#define KERNEL_SERVICE__USE_AS_OVERRIDE 0x00000001UL
+#define KERNEL_SERVICE__CREATE_FILES_AS 0x00000002UL
diff --git a/security/selinux/include/class_to_string.h b/security/selinux/include/class_to_string.h
index bd813c366e3..21ec786611d 100644
--- a/security/selinux/include/class_to_string.h
+++ b/security/selinux/include/class_to_string.h
@@ -72,3 +72,8 @@
S_(NULL)
S_("peer")
S_("capability2")
+ S_(NULL)
+ S_(NULL)
+ S_(NULL)
+ S_(NULL)
+ S_("kernel_service")
diff --git a/security/selinux/include/flask.h b/security/selinux/include/flask.h
index febf8868e85..882f27d66fa 100644
--- a/security/selinux/include/flask.h
+++ b/security/selinux/include/flask.h
@@ -52,6 +52,7 @@
#define SECCLASS_MEMPROTECT 61
#define SECCLASS_PEER 68
#define SECCLASS_CAPABILITY2 69
+#define SECCLASS_KERNEL_SERVICE 74
/*
* Security identifier indices for initial entities