Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-12-27 17:44:45 +00:00
Code Issues Projects Releases Packages Wiki Activity

Remove old DJGPP NTVDM patch files.

Browse source 
svn path=/trunk/; revision=15234
This commit is contained in:
Brian Palmer 2005-05-12 03:00:49 +00:00
parent 4b2a42963f
commit 942e1f4649
2 changed files with 0 additions and 103 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

85
reactos/boot/freeldr/ntvdmpat.c
View file

@ -1,85 +0,0 @@
/* Copyright (C) 2000 CW Sandmann (sandmann@clio.rice.edu) 1206 Braelinn, Sugar Land, TX 77479 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#ifdef GO32
#include <unistd.h>
#else
#include <io.h>
#endif
char view_only = 0;
const char *client_patch_code;
char buffer[20480];
unsigned long search_base = 0x4c800L;
int f;
char oldpatch[] = {0x3b, 0x05, 0xac, 0xe6 };
char newpatch[] = {0x3b, 0x05, 0x58, 0x5e };
void patch_image(char *filename)
{
int i,size;
view_only = 0;
f = open(filename, O_RDWR | O_BINARY);
if (f < 0) {
f = open(filename, O_RDONLY | O_BINARY);
if (f < 0) {
perror(filename);
return;
}
view_only = 1;
}
lseek(f, search_base, SEEK_SET);
size = read(f, buffer, sizeof(buffer));
client_patch_code = NULL;
for(i=0; i<size && !client_patch_code; i++)
if(!memcmp(buffer+i,oldpatch,sizeof(oldpatch)))
client_patch_code = (buffer+i);
if(!client_patch_code) {
printf("Old patch string not found in %s!\n",filename);
} else {
lseek(f, search_base+i-1, SEEK_SET); /* Ready to update */
if(!view_only) {
write(f, newpatch, sizeof(newpatch));
printf("%s patched\n",filename);
} else
printf("%s patchable (not changed, readonly)\n",filename);
}
close(f);
return;
}
int main(int argc, char **argv)
{
int i;
char filename[256];
char buf1[256];
char file2[256];
if (argc != 1) { /* If they specify names, patch them, exit */
for(i=1; i<argc; i++)
patch_image(argv[i]);
return 0;
}
fprintf(stderr, "This image patches Windows 2000 NTVDM to fix nesting DPMI bug.\n");
strcpy(filename,getenv("SYSTEMROOT"));
strcpy(file2,filename);
strcat(filename,"\\system32\\ntvdm.exe");
strcat(file2,"\\system32\\dllcache\\ntvdm.exe");
sprintf(buf1,"copy %s %s\\system32\\ntvdm.ori",filename,getenv("SYSTEMROOT"));
printf("%s\n",buf1);
system(buf1);
patch_image(file2);
patch_image(filename);
return 0;
}

18
reactos/boot/freeldr/readme
View file

@ -1,18 +0,0 @@
Perform at your own risk.
Directions for patching NTVDM on Windows 2000
1) Start a Command Prompt Window
2) Start Task Manager. Sort by Name. If NTVDM.EXE is a task End Process.
3) Execute NTVDMPAT.EXE from this ZIP file.
Notes:
With no arguments the executable patches both the DLLCACHE (for system file
protection) and the version in SYSTEM32. The image is a Win32 executable
(launching a DJGPP image will require NTVDM, locking the DLL so it can't
be patched). It saves the old version into NTVDM.ORI if you want to go
back. If you specify arguments on the command line it will patch the
executables you specify instead of automating the process (if you want to
do the archives/patches/moves yourself). Good luck.
Source included if you want to hack your own version.