os: Add facilities for client ID tracking.

 commit 6d6d4cb6043905d850834946e9bfc526ed5a9ef7
 Author: Matthieu Herrb <matthieu.herrb@laas.fr>
 Date:   Mon Jan 2 13:23:59 2012 +0000

    Add OpenBSD support to DetermineClientCmd()

    Uses kvm_getargv() from libkvm.

    Signed-off-by: Matthieu Herrb <matthieu.herrb@laas.fr>
    Reviewed-by: Adam Jackson <ajax@redhat.com>
    Signed-off-by: Keith Packard <keithp@keithp.com>

 commit cfc4c3d7fa8bd4da4c08b2ab8e6f85435f75353a
 Author: Alan Coopersmith <alan.coopersmith@oracle.com>
 Date:   Sat Dec 24 10:00:56 2011 -0800

    Add Solaris support to DetermineClientCmd

    Uses /proc/pid/psinfo to read command & partial arguments.

    Moves cmdsize & argsize variables into non-Solaris #else clause
    to avoid unused variable warnings.

    Fixes format mismatch errors when building with DEBUG defined on
    a 64-bit platform (where Mask is defined as CARD32).

    Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
    Reviewed-by: Rami Ylimäki <rami.ylimaki@vincit.fi>
    Signed-off-by: Keith Packard <keithp@keithp.com>

 commit 780133f9ae7fada462714b47e79d26075bbd9abe
 Author: Alan Coopersmith <alan.coopersmith@oracle.com>
 Date:   Fri Oct 28 21:29:50 2011 -0700

    Convert DetermineClientCmd to use strdup instead of malloc+strncpy

    *cmdname is initialized to NULL earlier in the function, so it's
    okay to overwrite it with NULL if strdup fails, don't need that
    extra check.

    Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
    Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>

 commit 2ef4ff45ef1fcfc4967ebe3d550408769e5f6500
 Author: Erkki Seppälä <erkki.seppala@vincit.fi>
 Date:   Fri Mar 25 10:38:23 2011 +0200

    os/client: Prevent rare fd leak in DetermineClientPid

    DetermineClientPid didn't close file descriptor if read on
    /proc/pid/cmdline failed. Adjusted the code to disregard the close
    return value and perform the return after that, if the read failed or
    returned EOF.

    Signed-off-by: Mark Kettenis <mark.kettenis@xs4all.nl>
    Signed-off-by: Erkki Seppälä <erkki.seppala@vincit.fi>
    Reviewed-by: Rami Ylimäki <rami.ylimaki@vincit.fi>
    Signed-off-by: Keith Packard <keithp@keithp.com>

 commit 1e933665bef26c74196bb7c59910e6a78bcacf0e
 Author: Rami Ylimäki <rami.ylimaki@vincit.fi>
 Date:   Wed Dec 22 16:51:09 2010 +0200

    os: Add facilities for client ID tracking.

    An interface is provided for figuring out the PID and process name of
    a client. Make some existing functionality from SELinux and IA
    extensions available for general use.

    Signed-off-by: Rami Ylimäki <rami.ylimaki@vincit.fi>
    Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>

 Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

3 files changed, 64 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/include/Imakefile b/nx-X11/programs/Xserver/include/Imakefile
index d1d7bd651..53f193ec8 100644
--- a/nx-X11/programs/Xserver/include/Imakefile
+++ b/nx-X11/programs/Xserver/include/Imakefile
@@ -16,6 +16,7 @@ depend::
 InstallDriverSDKNonExecFile(XIstubs.h,$(DRIVERSDKINCLUDEDIR))
 InstallDriverSDKNonExecFile(bstore.h,$(DRIVERSDKINCLUDEDIR))
 InstallDriverSDKNonExecFile(bstorestr.h,$(DRIVERSDKINCLUDEDIR))
+InstallDriverSDKNonExecFile(client.h,$(DRIVERSDKINCLUDEDIR))
 InstallDriverSDKNonExecFile(colormap.h,$(DRIVERSDKINCLUDEDIR))
 InstallDriverSDKNonExecFile(colormapst.h,$(DRIVERSDKINCLUDEDIR))
 InstallDriverSDKNonExecFile(cursor.h,$(DRIVERSDKINCLUDEDIR))
diff --git a/nx-X11/programs/Xserver/include/client.h b/nx-X11/programs/Xserver/include/client.h
new file mode 100644
index 000000000..87f2b1172
--- /dev/null
+++ b/nx-X11/programs/Xserver/include/client.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). All
+ * rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/* Author: Rami Ylimäki <rami.ylimaki@vincit.fi> */
+
+#ifndef CLIENT_H
+#define CLIENT_H
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif                          /* HAVE_DIX_CONFIG_H */
+#include <X11/Xfuncproto.h>
+#include <sys/types.h>
+
+/* Client IDs. Use GetClientPid, GetClientCmdName and GetClientCmdArgs
+ * instead of accessing the fields directly. */
+typedef struct {
+    pid_t pid;                  /* process ID, -1 if not available */
+    const char *cmdname;        /* process name, NULL if not available */
+    const char *cmdargs;        /* process arguments, NULL if not available */
+} ClientIdRec, *ClientIdPtr;
+
+struct _Client;
+
+/* Initialize and clean up. */
+void ReserveClientIds(struct _Client *client);
+void ReleaseClientIds(struct _Client *client);
+
+/* Determine client IDs for caching. Exported on purpose for
+ * extensions such as SELinux. */
+extern _X_EXPORT pid_t DetermineClientPid(struct _Client *client);
+extern _X_EXPORT void DetermineClientCmd(pid_t, const char **cmdname,
+                                         const char **cmdargs);
+
+/* Query cached client IDs. Exported on purpose for drivers. */
+extern _X_EXPORT pid_t GetClientPid(struct _Client *client);
+extern _X_EXPORT const char *GetClientCmdName(struct _Client *client);
+extern _X_EXPORT const char *GetClientCmdArgs(struct _Client *client);
+
+#endif                          /* CLIENT_H */
diff --git a/nx-X11/programs/Xserver/include/dixstruct.h b/nx-X11/programs/Xserver/include/dixstruct.h
index 1096f5c40..b8ee8e9cf 100644
--- a/nx-X11/programs/Xserver/include/dixstruct.h
+++ b/nx-X11/programs/Xserver/include/dixstruct.h
@@ -24,6 +24,7 @@ SOFTWARE.
 #ifndef DIXSTRUCT_H
 #define DIXSTRUCT_H
 
+#include "client.h"
 #include "dix.h"
 #include "resource.h"
 #include "cursor.h"
@@ -141,6 +142,8 @@ typedef struct _Client {
     long    smart_start_tick;
     long    smart_stop_tick;
     long    smart_check_tick;
+
+    ClientIdPtr  clientIds;
 }           ClientRec;
 
 /*