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authorPeter Moody <pmoody@google.com>2011-12-13 16:17:51 -0800
committerAl Viro <viro@zeniv.linux.org.uk>2012-01-17 16:17:02 -0500
commit4a6633ed08af5ba67790b4d1adcdeb8ceb55677e (patch)
tree8b658f732f742d3d3a40f84b39ce4aa42f70d538 /kernel/auditsc.c
parentc9fe685f7a17a0ee8bf3fbe51e40b1c8b8e65896 (diff)
downloadlinux-4a6633ed08af5ba67790b4d1adcdeb8ceb55677e.tar.gz
audit: implement all object interfield comparisons
This completes the matrix of interfield comparisons between uid/gid
information for the current task and the uid/gid information for inodes.
aka I can audit based on differences between the euid of the process and
the uid of fs objects.

Signed-off-by: Peter Moody <pmoody@google.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'kernel/auditsc.c')
-rw-r--r--kernel/auditsc.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 861c7b9c565a..b8cee462b99e 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -508,6 +508,7 @@ static int audit_field_compare(struct task_struct *tsk,
 			       struct audit_names *name)
 {
 	switch (f->val) {
+	/* process to file object comparisons */
 	case AUDIT_COMPARE_UID_TO_OBJ_UID:
 		return audit_compare_id(cred->uid,
 					name, offsetof(struct audit_names, uid),
@@ -516,6 +517,34 @@ static int audit_field_compare(struct task_struct *tsk,
 		return audit_compare_id(cred->gid,
 					name, offsetof(struct audit_names, gid),
 					f, ctx);
+	case AUDIT_COMPARE_EUID_TO_OBJ_UID:
+		return audit_compare_id(cred->euid,
+					name, offsetof(struct audit_names, uid),
+					f, ctx);
+	case AUDIT_COMPARE_EGID_TO_OBJ_GID:
+		return audit_compare_id(cred->egid,
+					name, offsetof(struct audit_names, gid),
+					f, ctx);
+	case AUDIT_COMPARE_AUID_TO_OBJ_UID:
+		return audit_compare_id(tsk->loginuid,
+					name, offsetof(struct audit_names, uid),
+					f, ctx);
+	case AUDIT_COMPARE_SUID_TO_OBJ_UID:
+		return audit_compare_id(cred->suid,
+					name, offsetof(struct audit_names, uid),
+					f, ctx);
+	case AUDIT_COMPARE_SGID_TO_OBJ_GID:
+		return audit_compare_id(cred->sgid,
+					name, offsetof(struct audit_names, gid),
+					f, ctx);
+	case AUDIT_COMPARE_FSUID_TO_OBJ_UID:
+		return audit_compare_id(cred->fsuid,
+					name, offsetof(struct audit_names, uid),
+					f, ctx);
+	case AUDIT_COMPARE_FSGID_TO_OBJ_GID:
+		return audit_compare_id(cred->fsgid,
+					name, offsetof(struct audit_names, gid),
+					f, ctx);
 	default:
 		WARN(1, "Missing AUDIT_COMPARE define.  Report as a bug\n");
 		return 0;