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001 /* Copyright (C) 2005 David Decotigny 001 /* Copyright (C) 2005 David Decotigny 002 002 003 This program is free software; you can redi 003 This program is free software; you can redistribute it and/or 004 modify it under the terms of the GNU Genera 004 modify it under the terms of the GNU General Public License 005 as published by the Free Software Foundatio 005 as published by the Free Software Foundation; either version 2 006 of the License, or (at your option) any lat 006 of the License, or (at your option) any later version. 007 007 008 This program is distributed in the hope tha 008 This program is distributed in the hope that it will be useful, 009 but WITHOUT ANY WARRANTY; without even the 009 but WITHOUT ANY WARRANTY; without even the implied warranty of 010 MERCHANTABILITY or FITNESS FOR A PARTICULAR 010 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 011 GNU General Public License for more details 011 GNU General Public License for more details. 012 012 013 You should have received a copy of the GNU 013 You should have received a copy of the GNU General Public License 014 along with this program; if not, write to t 014 along with this program; if not, write to the Free Software 015 Foundation, Inc., 59 Temple Place - Suite 3 015 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 016 USA. 016 USA. 017 */ 017 */ 018 018 019 #include <crt.h> 019 #include <crt.h> 020 #include <libc.h> 020 #include <libc.h> 021 #include <stdarg.h> 021 #include <stdarg.h> 022 #include <debug.h> 022 #include <debug.h> 023 023 024 /** 024 /** 025 * @file myprog10.c 025 * @file myprog10.c 026 * 026 * 027 * mprotect tests 027 * mprotect tests 028 * 028 * 029 * We use the temporary syscall 4004 to dump t 029 * We use the temporary syscall 4004 to dump the list of VRs in the 030 * thread's address space 030 * thread's address space 031 */ 031 */ 032 032 033 int main() !! 033 int main(void) 034 { 034 { 035 char * zoup; 035 char * zoup; 036 int fd; 036 int fd; 037 037 038 fd = open("/dev/zero", O_RDWR); 038 fd = open("/dev/zero", O_RDWR); 039 zoup = mmap((void*)4096, 8*1024*1024, 039 zoup = mmap((void*)4096, 8*1024*1024, 040 PROT_READ | PROT_WRITE, 040 PROT_READ | PROT_WRITE, 041 MAP_SHARED, 041 MAP_SHARED, 042 fd, 34); 042 fd, 34); 043 close(fd); 043 close(fd); 044 044 045 bochs_printf("mapped @%x\n", (unsigned)zoup) 045 bochs_printf("mapped @%x\n", (unsigned)zoup); 046 046 047 /* Do some forks to complicate things */ 047 /* Do some forks to complicate things */ 048 fork(); 048 fork(); 049 fork(); 049 fork(); 050 050 051 _sos_syscall1(4004, (unsigned)"Initial"); 051 _sos_syscall1(4004, (unsigned)"Initial"); 052 mprotect(zoup, 10*4096, PROT_READ); 052 mprotect(zoup, 10*4096, PROT_READ); 053 zoup += 10*4096; 053 zoup += 10*4096; 054 _sos_syscall1(4004, (unsigned)"After mprotec 054 _sos_syscall1(4004, (unsigned)"After mprotect Low"); 055 055 056 mprotect(zoup-4096, 2*4096, PROT_READ); 056 mprotect(zoup-4096, 2*4096, PROT_READ); 057 zoup += 4096; 057 zoup += 4096; 058 _sos_syscall1(4004, (unsigned)"After mprotec 058 _sos_syscall1(4004, (unsigned)"After mprotect Before Low"); 059 059 060 mprotect(zoup-4096, 4096, PROT_READ); 060 mprotect(zoup-4096, 4096, PROT_READ); 061 _sos_syscall1(4004, (unsigned)"After mprotec 061 _sos_syscall1(4004, (unsigned)"After mprotect Before low (bis)"); 062 062 063 mprotect(zoup + 1024*1024, 4096, PROT_READ); 063 mprotect(zoup + 1024*1024, 4096, PROT_READ); 064 _sos_syscall1(4004, (unsigned)"After mprotec 064 _sos_syscall1(4004, (unsigned)"After mprotect Middle"); 065 065 066 mprotect(zoup + 1024*1024, 4096, PROT_READ); 066 mprotect(zoup + 1024*1024, 4096, PROT_READ); 067 _sos_syscall1(4004, (unsigned)"After mprotec 067 _sos_syscall1(4004, (unsigned)"After mprotect Middle (bis)"); 068 068 069 mprotect(zoup + 8*1024*1024 - 11*4096 - 4096 069 mprotect(zoup + 8*1024*1024 - 11*4096 - 4096, 4096, PROT_READ); 070 _sos_syscall1(4004, (unsigned)"After mprotec 070 _sos_syscall1(4004, (unsigned)"After mprotect High"); 071 071 072 mprotect(zoup + 8*1024*1024 - 11*4096 - 2*40 072 mprotect(zoup + 8*1024*1024 - 11*4096 - 2*4096, 3*4096, PROT_READ); 073 _sos_syscall1(4004, (unsigned)"After mprotec 073 _sos_syscall1(4004, (unsigned)"After mprotect Past High"); 074 074 075 mprotect((void*)0x40000000, 0x10000000, PROT 075 mprotect((void*)0x40000000, 0x10000000, PROT_READ); 076 _sos_syscall1(4004, (unsigned)"After mprotec 076 _sos_syscall1(4004, (unsigned)"After mprotect Complete VR"); 077 077 078 mprotect((void*)0x40000000, 0x10000000, PROT 078 mprotect((void*)0x40000000, 0x10000000, PROT_READ); 079 _sos_syscall1(4004, (unsigned)"After mprotec 079 _sos_syscall1(4004, (unsigned)"After mprotect Complete VR (bis)"); 080 080 081 return 0; 081 return 0; 082 } 082 }
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