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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 /** 025 /** 026 * @file myprog11.c 026 * @file myprog11.c 027 * 027 * 028 * mresize tests 028 * mresize tests 029 * 029 * 030 * We use the temporary syscall 4004 to dump t 030 * We use the temporary syscall 4004 to dump the list of VRs in the 031 * thread's address space 031 * thread's address space 032 */ 032 */ 033 033 034 034 035 int main() !! 035 int main(void) 036 { 036 { 037 void * moved; 037 void * moved; 038 char * zoup; 038 char * zoup; >> 039 int fd; >> 040 >> 041 fd = open("/dev/zero", O_RDWR); >> 042 zoup = mmap((void*)4096, 8*1024*1024, >> 043 PROT_READ | PROT_WRITE, >> 044 MAP_SHARED, >> 045 fd, 34); >> 046 close(fd); 039 047 040 zoup = fakemmap((void*)4096, 8*1024*1024, << 041 PROT_READ | PROT_WRITE, << 042 MAP_SHARED, << 043 "/dev/zero", 34); << 044 bochs_printf("mapped @%x\n", (unsigned)zoup) 048 bochs_printf("mapped @%x\n", (unsigned)zoup); 045 049 046 /* Do some forks to complicate things */ 050 /* Do some forks to complicate things */ 047 fork(); 051 fork(); 048 fork(); 052 fork(); 049 053 050 /* First, split the region in slices using a 054 /* First, split the region in slices using a sequence of 051 mprotects */ 055 mprotects */ 052 _sos_syscall1(4004, (unsigned)"Initial"); 056 _sos_syscall1(4004, (unsigned)"Initial"); 053 mprotect(zoup, 10*4096, PROT_READ); 057 mprotect(zoup, 10*4096, PROT_READ); 054 zoup += 10*4096; 058 zoup += 10*4096; 055 _sos_syscall1(4004, (unsigned)"After mprotec 059 _sos_syscall1(4004, (unsigned)"After mprotect Low"); 056 060 057 mprotect(zoup-4096, 2*4096, PROT_READ); 061 mprotect(zoup-4096, 2*4096, PROT_READ); 058 zoup += 4096; 062 zoup += 4096; 059 _sos_syscall1(4004, (unsigned)"After mprotec 063 _sos_syscall1(4004, (unsigned)"After mprotect Before Low"); 060 064 061 mprotect(zoup-4096, 4096, PROT_READ); 065 mprotect(zoup-4096, 4096, PROT_READ); 062 _sos_syscall1(4004, (unsigned)"After mprotec 066 _sos_syscall1(4004, (unsigned)"After mprotect Before low (bis)"); 063 067 064 mprotect(zoup + 1024*1024, 4096, PROT_READ); 068 mprotect(zoup + 1024*1024, 4096, PROT_READ); 065 _sos_syscall1(4004, (unsigned)"After mprotec 069 _sos_syscall1(4004, (unsigned)"After mprotect Middle"); 066 070 067 mprotect(zoup + 1024*1024, 4096, PROT_READ); 071 mprotect(zoup + 1024*1024, 4096, PROT_READ); 068 _sos_syscall1(4004, (unsigned)"After mprotec 072 _sos_syscall1(4004, (unsigned)"After mprotect Middle (bis)"); 069 073 070 mprotect(zoup + 8*1024*1024 - 11*4096 - 4096 074 mprotect(zoup + 8*1024*1024 - 11*4096 - 4096, 4096, PROT_READ); 071 _sos_syscall1(4004, (unsigned)"After mprotec 075 _sos_syscall1(4004, (unsigned)"After mprotect High"); 072 076 073 mprotect(zoup + 8*1024*1024 - 11*4096 - 2*40 077 mprotect(zoup + 8*1024*1024 - 11*4096 - 2*4096, 3*4096, PROT_READ); 074 _sos_syscall1(4004, (unsigned)"After mprotec 078 _sos_syscall1(4004, (unsigned)"After mprotect Past High"); 075 079 076 mprotect((void*)0x40000000, 0x10000000, PROT 080 mprotect((void*)0x40000000, 0x10000000, PROT_READ); 077 _sos_syscall1(4004, (unsigned)"After mprotec 081 _sos_syscall1(4004, (unsigned)"After mprotect Complete VR"); 078 082 079 mprotect((void*)0x40000000, 0x10000000, PROT 083 mprotect((void*)0x40000000, 0x10000000, PROT_READ); 080 _sos_syscall1(4004, (unsigned)"After mprotec 084 _sos_syscall1(4004, (unsigned)"After mprotect Complete VR (bis)"); 081 085 082 /* Now try to resize one of the VR */ 086 /* Now try to resize one of the VR */ 083 moved = zoup + 8*1024*1024 - 11*4096 - 10*40 087 moved = zoup + 8*1024*1024 - 11*4096 - 10*4096; 084 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 088 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 2*4096, 3*4096, 085 & moved, 40*4096, 0); 089 & moved, 40*4096, 0); 086 _sos_syscall1(4004, (unsigned)"After mremap 090 _sos_syscall1(4004, (unsigned)"After mremap (not allowed)"); 087 bochs_printf("moved=%x\n", (unsigned)moved); 091 bochs_printf("moved=%x\n", (unsigned)moved); 088 092 089 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 093 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 2*4096, 4096, 090 & moved, 40*4096, 0); 094 & moved, 40*4096, 0); 091 _sos_syscall1(4004, (unsigned)"After mremap 095 _sos_syscall1(4004, (unsigned)"After mremap (not allowed - bis)"); 092 bochs_printf("moved=%x\n", (unsigned)moved); 096 bochs_printf("moved=%x\n", (unsigned)moved); 093 097 094 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 098 _sos_mresize(zoup + 8*1024*1024 - 11*4096 - 2*4096, 4096, 095 & moved, 40*4096, MREMAP_MAYMOV 099 & moved, 40*4096, MREMAP_MAYMOVE); 096 _sos_syscall1(4004, (unsigned)"After mremap 100 _sos_syscall1(4004, (unsigned)"After mremap (DO move)"); 097 bochs_printf("moved=%x\n", (unsigned)moved); 101 bochs_printf("moved=%x\n", (unsigned)moved); 098 102 099 _sos_mresize(moved, 4096, 103 _sos_mresize(moved, 4096, 100 & moved, 100*4096, MREMAP_MAYMO 104 & moved, 100*4096, MREMAP_MAYMOVE); 101 _sos_syscall1(4004, (unsigned)"After mremap 105 _sos_syscall1(4004, (unsigned)"After mremap (DO move)"); 102 bochs_printf("moved=%x\n", (unsigned)moved); 106 bochs_printf("moved=%x\n", (unsigned)moved); 103 107 104 return 0; 108 return 0; 105 } 109 }
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