Added '-showopts' option to print available driver options (#5564).

hw/xfree86/common/Makefile.am

@@ -25,7 +25,7 @@ xf86DefModeSet.c: $(srcdir)/modeline2c.awk $(MODEDEFSOURCES)
 BUILT_SOURCES = xf86DefModeSet.c
 
 AM_LDFLAGS = -r
-libcommon_la_SOURCES = xf86Configure.c xf86Bus.c xf86Config.c \
+libcommon_la_SOURCES = xf86Configure.c xf86ShowOpts.c xf86Bus.c xf86Config.c \
                       xf86Cursor.c xf86DGA.c xf86DPMS.c \
                       xf86DoProbe.c xf86Events.c \
                       xf86Globals.c xf86AutoConfig.c \

hw/xfree86/common/xf86.h

@@ -56,6 +56,7 @@
 
 /* General parameters */
 extern int xf86DoConfigure;
+extern int xf86DoShowOptions;
 extern Bool xf86DoModalias;
 extern Bool xf86DoConfigurePass1;
 extern DevPrivateKey xf86ScreenKey;

hw/xfree86/common/xf86Globals.c

@@ -153,6 +153,7 @@ Bool xf86Resetting = FALSE;
 Bool xf86Initialising = FALSE;
 Bool xf86DoProbe = FALSE;
 Bool xf86DoConfigure = FALSE;
+Bool xf86DoShowOptions = FALSE;
 Bool xf86DoModalias = FALSE;
 DriverPtr *xf86DriverList = NULL;
 int xf86NumDrivers = 0;

hw/xfree86/common/xf86Init.c

@@ -688,7 +688,7 @@ InitOutput(ScreenInfo *pScreenInfo, int argc, char **argv)
     }
 
     /* Read and parse the config file */
-    if (!xf86DoProbe && !xf86DoConfigure && !xf86DoModalias) {
+    if (!xf86DoProbe && !xf86DoConfigure && !xf86DoModalias && !xf86DoShowOptions) {
       switch (xf86HandleConfigFile(FALSE)) {
       case CONFIG_OK:
 	break;
@@ -713,6 +713,9 @@ InitOutput(ScreenInfo *pScreenInfo, int argc, char **argv)
         LoaderSetOptions(LDR_OPT_ABI_MISMATCH_NONFATAL);
     }
 
+    if (xf86DoShowOptions)
+        DoShowOptions();
+
     xf86OpenConsole();
 
     /* Do a general bus probe.  This will be a PCI probe for x86 platforms */
@@ -1774,6 +1777,15 @@ ddxProcessArgument(int argc, char **argv, int i)
     xf86AllowMouseOpenFail = TRUE;
     return 1;
   }
+  if (!strcmp(argv[i], "-showopts"))
+  {
+    if (getuid() != 0 && geteuid() == 0) {
+    ErrorF("The '-showopts' option can only be used by root.\n");
+    exit(1);
+    }
+    xf86DoShowOptions = TRUE;
+    return 1;
+  }
   if (!strcmp(argv[i], "-isolateDevice"))
   {
     int bus, device, func;
@@ -1812,6 +1824,7 @@ ddxUseMsg()
     ErrorF("-modulepath paths      specify the module search path\n");
     ErrorF("-logfile file          specify a log file name\n");
     ErrorF("-configure             probe for devices and write an "__XCONFIGFILE__"\n");
+    ErrorF("-showopts              print available options for all installed drivers\n");
   }
   ErrorF("-modalias              output a modalias-style filter for each driver installed\n");
   ErrorF("-config file           specify a configuration file, relative to the\n");

hw/xfree86/common/xf86Priv.h

@@ -153,6 +153,7 @@ extern const int xf86NumDefaultModes;
 /* xf86DoProbe.c */
 void DoProbe(void);
 void DoConfigure(void);
+void DoShowOptions(void);
 
 /* xf86Events.c */
 

hw/xfree86/common/xf86ShowOpts.c

@@ -0,0 +1,129 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86ShopwOpts.c,v 3.80 2003/10/08 14:58:27 dawes Exp $ */
+/*
+ * Copyright 2000-2002 by Alan Hourihane, Flint Mountain, North Wales.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Alan Hourihane not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Alan Hourihane makes no representations
+ * about the suitability of this software for any purpose.  It is provided
+ * "as is" without express or implied warranty.
+ *
+ * ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author:  Marcus Schaefer, ms@suse.de
+ *
+ */
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <X11/X.h>
+#include <X11/Xmd.h>
+#include "os.h"
+#ifdef XFree86LOADER
+#include "loaderProcs.h"
+#endif
+#include "xf86.h"
+#include "xf86Config.h"
+#include "xf86_OSlib.h"
+#include "xf86Priv.h"
+/* #include "xf86PciData.h" */
+#define IN_XSERVER
+#include "xf86Parser.h"
+#include "xf86tokens.h"
+#include "Configint.h"
+#include "vbe.h"
+#include "xf86DDC.h"
+#if defined(__sparc__) && !defined(__OpenBSD__)
+#include "xf86Bus.h"
+#include "xf86Sbus.h"
+#endif
+#include "globals.h"
+
+static const char* 
+optionTypeToSting(OptionValueType type)
+{
+    switch (type) {
+    case OPTV_NONE:
+        return "";
+    case OPTV_INTEGER:
+        return "<int>";
+    case OPTV_STRING:
+        return "<str>";
+    case OPTV_ANYSTR:
+        return "<str>";
+    case OPTV_REAL:
+        return "<real>";
+    case OPTV_BOOLEAN:
+        return "<bool>";
+    case OPTV_FREQ:
+        return "<freq>";
+    default:
+        return "<undef>";
+    }
+}
+
+void DoShowOptions (void) {
+	int  i = 0;
+	char **vlist  = 0;
+	char *pSymbol = 0;
+	XF86ModuleData *initData = 0;
+	if (! (vlist = xf86DriverlistFromCompile())) {
+		ErrorF("Missing output drivers\n");
+		goto bail;
+	}
+	xf86LoadModules (vlist,0);
+	xfree (vlist);
+	for (i = 0; i < xf86NumDrivers; i++) {
+		if (xf86DriverList[i]->AvailableOptions) {
+			OptionInfoPtr pOption = (OptionInfoPtr)(*xf86DriverList[i]->AvailableOptions)(0,0);
+			if (! pOption) {
+				ErrorF ("(EE) Couldn't read option table for %s driver\n",
+					xf86DriverList[i]->driverName
+				);
+				continue;                                                       
+			}
+			pSymbol = xalloc (
+				strlen(xf86DriverList[i]->driverName) + strlen("ModuleData") + 1
+			);
+			strcpy (pSymbol, xf86DriverList[i]->driverName);
+			strcat (pSymbol, "ModuleData");
+			initData = LoaderSymbol (pSymbol);
+			if (initData) {
+				XF86ModuleVersionInfo *vers = initData->vers;
+				ErrorF ("Driver[%d]:%s[%s] {\n",
+					i,xf86DriverList[i]->driverName,vers->vendor
+				);
+				OptionInfoPtr p;
+				for (p = pOption; p->name != NULL; p++) {
+					const char *opttype = optionTypeToSting(p->type);
+					char *optname = xalloc(strlen(p->name) + 2 + 1);
+					if (!optname) {
+						continue;                      
+					}
+					sprintf(optname, "%s", p->name);
+					ErrorF ("\t%s:%s\n", optname,opttype);
+				}
+				ErrorF ("}\n");
+			}
+		}
+	}
+	bail:
+	OsCleanup (TRUE);                             
+	AbortDDX ();                                                           
+	fflush (stderr);                        
+	exit (0);
+}