sync with vidix cvs

CVS patchset: 6043
CVS date: 2004/01/13 21:56:14

1 files changed, 14 insertions, 10 deletions

diff --git a/src/video_out/libdha/kernelhelper/README b/src/video_out/libdha/kernelhelper/README
index cb5964cb8..98a7923b3 100644
--- a/src/video_out/libdha/kernelhelper/README
+++ b/src/video_out/libdha/kernelhelper/README
@@ -1,7 +1,7 @@
 dhahelper is small driver to provide some kernel function into userspace.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-Main goal why you need to use that it's busmastering.
-(Btw, lacking of possibility to implement convertion of
+The main reason you need to use dhahelper is for busmastering.
+(Btw, lacking of possibility to implement conversion of
 virtual addresses into physical in userspace caused
 implementing of so-called DRM drivers for Linux from
 XFree86 side).
@@ -14,21 +14,25 @@ Installation:
 just type in this directory:
 make all install
 
-If you have compiled this driver first-time then
-type also:
-make nodes
+The device node /dev/dhahelper will be created.  The initial
+permissions of this node are restrictive.  See below for information
+on how to make it available to non-root users.
 
 Porting:
 ~~~~~~~~
 This driver was developed only for Linux.
-So if someone will port that on other unicies
+So if someone will port that on other unices
 then any patches are gladly accepted.
 
 WARNING:
 ~~~~~~~~
-This driver violates some kernel's security rules.
-To keep this driver from anonymous access I suggest
-you create new group for mplayerxp and /dev/dhahelper
-only.
+
+This driver violates some kernel security rules.  To keep this driver
+from anonymous access I suggest you create a new group (e.g. dha) for
+/dev/dhahelper and set the permissions to 660 (or ug+rw,o-rw).  Then
+do one of the following:
+
+- add trusted users to group dha.
+- make trusted applications SGID to dha.
 
 Good luck!