- 4.8.0 (probably the last XFree86 version ever, for comparison and archival reasons)

[packages/XFree86.git] / XFree86-elfloader-linux-non-exec-stack.patch

--- xc/programs/Xserver/hw/xfree86/loader/elfloader.c.orig	2007-04-09 17:37:17.000000000 +0200
+++ xc/programs/Xserver/hw/xfree86/loader/elfloader.c	2007-12-02 16:51:49.442062089 +0100
@@ -1165,7 +1165,7 @@
 	    ErrorF("ELFCreateGOT() Unable to reallocate memory!!!!\n");
 	    return FALSE;
 	}
-#   if (defined(linux) && defined(__ia64__)) || \
+#   if defined(linux) || \
        defined(__OpenBSD__) || defined(__NetBSD__)
 	{
 	    unsigned long page_size = getpagesize();
@@ -3483,10 +3483,16 @@
 	elffile->lsection[j].size = SecSize(i);
 	elffile->lsection[j].flags = flags;
 	switch (SecType(i)) {
-#if defined(__OpenBSD__) || defined(__NetBSD__)
+#if defined(linux) || defined(__OpenBSD__) || defined(__NetBSD__)
 	case SHT_PROGBITS:
-	    mprotect(elffile->lsection[j].saddr, SecSize(i),
+	{
+	    unsigned long page_size = getpagesize();
+	    unsigned long round;
+
+	    round = (unsigned long)elffile->lsection[j].saddr & (page_size -1);
+	    mprotect( (char*)elffile->lsection[j].saddr - round, SecSize(i) + round,
 		     PROT_READ | PROT_WRITE | PROT_EXEC);
+	}
 	    break;
 #endif
 	case SHT_SYMTAB:
@@ -3688,7 +3694,7 @@
 	ErrorF("Unable to allocate ELF sections\n");
 	return NULL;
     }
-#  if (defined(linux) && defined(__ia64__)) || \
+#  if defined(linux) || \
       defined(__OpenBSD__) || defined(__NetBSD__)
     {
 	unsigned long page_size = getpagesize();