Made Process::setPermisions functions, to set memory page's permisions

library/Process-linux.cpp

@@ -25,6 +25,7 @@ distribution.
 #include "Internal.h"
 #include <dirent.h>
 #include <errno.h>
+#include <sys/mman.h>
 
 #include <string>
 #include <vector>
@@ -177,3 +178,15 @@ int Process::getPID()
 {
     return getpid();
 }
+
+bool Process::setPermisions(const t_memrange & range,const t_memrange &trgrange)
+{
+	int result;
+	int protect=0;
+	if(trgrange.read)protect|=PROT_READ;
+	if(trgrange.write)protect|=PROT_WRITE;
+	if(trgrange.execute)protect|=PROT_EXECUTE;
+	result=mprotect((void *)range.start, range.end-range.start,protect);
+
+	return result==0;
+}

library/Process-windows.cpp

@@ -356,3 +356,18 @@ string Process::getPath()
     string out(String);
     return(out.substr(0,out.find_last_of("\\")));
 }
+
+bool Process::setPermisions(const t_memrange & range,const t_memrange &trgrange)
+{
+	DWORD newprotect=0;
+	if(trgrange.read && !trgrange.write && !trgrange.execute)newprotect=PAGE_READONLY;
+	if(trgrange.read && trgrange.write && !trgrange.execute)newprotect=PAGE_READWRITE;
+	if(!trgrange.read && !trgrange.write && trgrange.execute)newprotect=PAGE_EXECUTE;
+	if(trgrange.read && !trgrange.write && trgrange.execute)newprotect=PAGE_EXECUTE_READ;
+	if(trgrange.read && trgrange.write && trgrange.execute)newprotect=PAGE_EXECUTE_READWRITE;
+	DWORD oldprotect=0;
+	bool result;
+	result=VirtualProtect((LPVOID)range.start,range.end-range.start,newprotect,&oldprotect);
+	
+	return result;
+}

library/include/dfhack/Process.h

@@ -269,6 +269,9 @@ namespace DFHack
             int getPID();
             /// get the DF Process FilePath
             std::string getPath();
+
+			/// modify permisions of memory range
+			bool setPermisions(const t_memrange & range,const t_memrange &trgrange);
     private:
         VersionInfo * my_descriptor;
         PlatformSpecific *d;