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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; >> 037 >> 038 fd = open("/dev/zero", O_RDWR); >> 039 zoup = mmap((void*)4096, 8*1024*1024, >> 040 PROT_READ | PROT_WRITE, >> 041 MAP_SHARED, >> 042 fd, 34); >> 043 close(fd); 036 044 037 zoup = fakemmap((void*)4096, 8*1024*1024, << 038 PROT_READ | PROT_WRITE, << 039 MAP_SHARED, << 040 "/dev/zero", 34); << 041 bochs_printf("mapped @%x\n", (unsigned)zoup) 045 bochs_printf("mapped @%x\n", (unsigned)zoup); 042 046 043 /* Do some forks to complicate things */ 047 /* Do some forks to complicate things */ 044 fork(); 048 fork(); 045 fork(); 049 fork(); 046 050 047 _sos_syscall1(4004, (unsigned)"Initial"); 051 _sos_syscall1(4004, (unsigned)"Initial"); 048 mprotect(zoup, 10*4096, PROT_READ); 052 mprotect(zoup, 10*4096, PROT_READ); 049 zoup += 10*4096; 053 zoup += 10*4096; 050 _sos_syscall1(4004, (unsigned)"After mprotec 054 _sos_syscall1(4004, (unsigned)"After mprotect Low"); 051 055 052 mprotect(zoup-4096, 2*4096, PROT_READ); 056 mprotect(zoup-4096, 2*4096, PROT_READ); 053 zoup += 4096; 057 zoup += 4096; 054 _sos_syscall1(4004, (unsigned)"After mprotec 058 _sos_syscall1(4004, (unsigned)"After mprotect Before Low"); 055 059 056 mprotect(zoup-4096, 4096, PROT_READ); 060 mprotect(zoup-4096, 4096, PROT_READ); 057 _sos_syscall1(4004, (unsigned)"After mprotec 061 _sos_syscall1(4004, (unsigned)"After mprotect Before low (bis)"); 058 062 059 mprotect(zoup + 1024*1024, 4096, PROT_READ); 063 mprotect(zoup + 1024*1024, 4096, PROT_READ); 060 _sos_syscall1(4004, (unsigned)"After mprotec 064 _sos_syscall1(4004, (unsigned)"After mprotect Middle"); 061 065 062 mprotect(zoup + 1024*1024, 4096, PROT_READ); 066 mprotect(zoup + 1024*1024, 4096, PROT_READ); 063 _sos_syscall1(4004, (unsigned)"After mprotec 067 _sos_syscall1(4004, (unsigned)"After mprotect Middle (bis)"); 064 068 065 mprotect(zoup + 8*1024*1024 - 11*4096 - 4096 069 mprotect(zoup + 8*1024*1024 - 11*4096 - 4096, 4096, PROT_READ); 066 _sos_syscall1(4004, (unsigned)"After mprotec 070 _sos_syscall1(4004, (unsigned)"After mprotect High"); 067 071 068 mprotect(zoup + 8*1024*1024 - 11*4096 - 2*40 072 mprotect(zoup + 8*1024*1024 - 11*4096 - 2*4096, 3*4096, PROT_READ); 069 _sos_syscall1(4004, (unsigned)"After mprotec 073 _sos_syscall1(4004, (unsigned)"After mprotect Past High"); 070 074 071 mprotect((void*)0x40000000, 0x10000000, PROT 075 mprotect((void*)0x40000000, 0x10000000, PROT_READ); 072 _sos_syscall1(4004, (unsigned)"After mprotec 076 _sos_syscall1(4004, (unsigned)"After mprotect Complete VR"); 073 077 074 mprotect((void*)0x40000000, 0x10000000, PROT 078 mprotect((void*)0x40000000, 0x10000000, PROT_READ); 075 _sos_syscall1(4004, (unsigned)"After mprotec 079 _sos_syscall1(4004, (unsigned)"After mprotect Complete VR (bis)"); 076 080 077 return 0; 081 return 0; 078 } 082 }
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