83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/* Copyright (C) 2005 David Decotigny
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
USA.
|
|
*/
|
|
|
|
#include <crt.h>
|
|
#include <libc.h>
|
|
#include <stdarg.h>
|
|
#include <debug.h>
|
|
|
|
/**
|
|
* @file myprog10.c
|
|
*
|
|
* mprotect tests
|
|
*
|
|
* We use the temporary syscall 4004 to dump the list of VRs in the
|
|
* thread's address space
|
|
*/
|
|
|
|
int main(void)
|
|
{
|
|
char * zoup;
|
|
int fd;
|
|
|
|
fd = open("/dev/zero", O_RDWR);
|
|
zoup = mmap((void*)4096, 8*1024*1024,
|
|
PROT_READ | PROT_WRITE,
|
|
MAP_SHARED,
|
|
fd, 34);
|
|
close(fd);
|
|
|
|
bochs_printf("mapped @%x\n", (unsigned)zoup);
|
|
|
|
/* Do some forks to complicate things */
|
|
fork();
|
|
fork();
|
|
|
|
_sos_syscall1(4004, (unsigned)"Initial");
|
|
mprotect(zoup, 10*4096, PROT_READ);
|
|
zoup += 10*4096;
|
|
_sos_syscall1(4004, (unsigned)"After mprotect Low");
|
|
|
|
mprotect(zoup-4096, 2*4096, PROT_READ);
|
|
zoup += 4096;
|
|
_sos_syscall1(4004, (unsigned)"After mprotect Before Low");
|
|
|
|
mprotect(zoup-4096, 4096, PROT_READ);
|
|
_sos_syscall1(4004, (unsigned)"After mprotect Before low (bis)");
|
|
|
|
mprotect(zoup + 1024*1024, 4096, PROT_READ);
|
|
_sos_syscall1(4004, (unsigned)"After mprotect Middle");
|
|
|
|
mprotect(zoup + 1024*1024, 4096, PROT_READ);
|
|
_sos_syscall1(4004, (unsigned)"After mprotect Middle (bis)");
|
|
|
|
mprotect(zoup + 8*1024*1024 - 11*4096 - 4096, 4096, PROT_READ);
|
|
_sos_syscall1(4004, (unsigned)"After mprotect High");
|
|
|
|
mprotect(zoup + 8*1024*1024 - 11*4096 - 2*4096, 3*4096, PROT_READ);
|
|
_sos_syscall1(4004, (unsigned)"After mprotect Past High");
|
|
|
|
mprotect((void*)0x40000000, 0x10000000, PROT_READ);
|
|
_sos_syscall1(4004, (unsigned)"After mprotect Complete VR");
|
|
|
|
mprotect((void*)0x40000000, 0x10000000, PROT_READ);
|
|
_sos_syscall1(4004, (unsigned)"After mprotect Complete VR (bis)");
|
|
|
|
return 0;
|
|
}
|