| imgact_linux.c (111797) | imgact_linux.c (111798) |
|---|---|
| 1/*- 2 * Copyright (c) 1994-1996 S�ren Schmidt 3 * All rights reserved. 4 * 5 * Based heavily on /sys/kern/imgact_aout.c which is: 6 * Copyright (c) 1993, David Greenman 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright | 1/*- 2 * Copyright (c) 1994-1996 S�ren Schmidt 3 * All rights reserved. 4 * 5 * Based heavily on /sys/kern/imgact_aout.c which is: 6 * Copyright (c) 1993, David Greenman 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright |
| 12 * notice, this list of conditions and the following disclaimer | 12 * notice, this list of conditions and the following disclaimer |
| 13 * in this position and unchanged. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * | 13 * in this position and unchanged. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * |
| 31 * $FreeBSD: head/sys/i386/linux/imgact_linux.c 111797 2003-03-03 09:14:26Z des $ | 31 * $FreeBSD: head/sys/i386/linux/imgact_linux.c 111798 2003-03-03 09:17:12Z des $ |
| 32 */ 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/exec.h> 37#include <sys/imgact.h> 38#include <sys/imgact_aout.h> 39#include <sys/kernel.h> --- 92 unchanged lines hidden (view full) --- 132#ifdef DEBUG 133 printf("imgact: Non page aligned binary %lu\n", file_offset); 134#endif 135 /* 136 * Map text+data+bss read/write/execute 137 */ 138 vmaddr = virtual_offset; 139 error = vm_map_find(&vmspace->vm_map, NULL, 0, &vmaddr, | 32 */ 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/exec.h> 37#include <sys/imgact.h> 38#include <sys/imgact_aout.h> 39#include <sys/kernel.h> --- 92 unchanged lines hidden (view full) --- 132#ifdef DEBUG 133 printf("imgact: Non page aligned binary %lu\n", file_offset); 134#endif 135 /* 136 * Map text+data+bss read/write/execute 137 */ 138 vmaddr = virtual_offset; 139 error = vm_map_find(&vmspace->vm_map, NULL, 0, &vmaddr, |
| 140 a_out->a_text + a_out->a_data + bss_size, FALSE, | 140 a_out->a_text + a_out->a_data + bss_size, FALSE, |
| 141 VM_PROT_ALL, VM_PROT_ALL, 0); 142 if (error) 143 goto fail; 144 145 error = vm_mmap(kernel_map, &buffer, 146 round_page(a_out->a_text + a_out->a_data + file_offset), 147 VM_PROT_READ, VM_PROT_READ, 0, 148 (caddr_t) imgp->vp, trunc_page(file_offset)); 149 if (error) 150 goto fail; 151 152 error = copyout((void *)(buffer + file_offset), | 141 VM_PROT_ALL, VM_PROT_ALL, 0); 142 if (error) 143 goto fail; 144 145 error = vm_mmap(kernel_map, &buffer, 146 round_page(a_out->a_text + a_out->a_data + file_offset), 147 VM_PROT_READ, VM_PROT_READ, 0, 148 (caddr_t) imgp->vp, trunc_page(file_offset)); 149 if (error) 150 goto fail; 151 152 error = copyout((void *)(buffer + file_offset), |
| 153 (void *)vmaddr, a_out->a_text + a_out->a_data); | 153 (void *)vmaddr, a_out->a_text + a_out->a_data); |
| 154 155 vm_map_remove(kernel_map, buffer, 156 buffer + round_page(a_out->a_text + a_out->a_data + file_offset)); 157 158 if (error) 159 goto fail; 160 161 /* 162 * remove write enable on the 'text' part 163 */ 164 error = vm_map_protect(&vmspace->vm_map, 165 vmaddr, | 154 155 vm_map_remove(kernel_map, buffer, 156 buffer + round_page(a_out->a_text + a_out->a_data + file_offset)); 157 158 if (error) 159 goto fail; 160 161 /* 162 * remove write enable on the 'text' part 163 */ 164 error = vm_map_protect(&vmspace->vm_map, 165 vmaddr, |
| 166 vmaddr + a_out->a_text, 167 VM_PROT_EXECUTE|VM_PROT_READ, 168 TRUE); | 166 vmaddr + a_out->a_text, 167 VM_PROT_EXECUTE|VM_PROT_READ, 168 TRUE); |
| 169 if (error) 170 goto fail; 171 } 172 else { 173#ifdef DEBUG 174 printf("imgact: Page aligned binary %lu\n", file_offset); 175#endif 176 /* 177 * Map text+data read/execute 178 */ 179 vmaddr = virtual_offset; 180 error = vm_mmap(&vmspace->vm_map, &vmaddr, 181 a_out->a_text + a_out->a_data, | 169 if (error) 170 goto fail; 171 } 172 else { 173#ifdef DEBUG 174 printf("imgact: Page aligned binary %lu\n", file_offset); 175#endif 176 /* 177 * Map text+data read/execute 178 */ 179 vmaddr = virtual_offset; 180 error = vm_mmap(&vmspace->vm_map, &vmaddr, 181 a_out->a_text + a_out->a_data, |
| 182 VM_PROT_READ | VM_PROT_EXECUTE, 183 VM_PROT_ALL, 184 MAP_PRIVATE | MAP_FIXED, 185 (caddr_t)imgp->vp, file_offset); | 182 VM_PROT_READ | VM_PROT_EXECUTE, 183 VM_PROT_ALL, 184 MAP_PRIVATE | MAP_FIXED, 185 (caddr_t)imgp->vp, file_offset); |
| 186 if (error) 187 goto fail; | 186 if (error) 187 goto fail; |
| 188 | 188 |
| 189#ifdef DEBUG 190 printf("imgact: startaddr=%08lx, length=%08lx\n", 191 (u_long)vmaddr, a_out->a_text + a_out->a_data); 192#endif 193 /* 194 * allow read/write of data 195 */ 196 error = vm_map_protect(&vmspace->vm_map, 197 vmaddr + a_out->a_text, 198 vmaddr + a_out->a_text + a_out->a_data, 199 VM_PROT_ALL, 200 FALSE); 201 if (error) 202 goto fail; | 189#ifdef DEBUG 190 printf("imgact: startaddr=%08lx, length=%08lx\n", 191 (u_long)vmaddr, a_out->a_text + a_out->a_data); 192#endif 193 /* 194 * allow read/write of data 195 */ 196 error = vm_map_protect(&vmspace->vm_map, 197 vmaddr + a_out->a_text, 198 vmaddr + a_out->a_text + a_out->a_data, 199 VM_PROT_ALL, 200 FALSE); 201 if (error) 202 goto fail; |
| 203 | 203 |
| 204 /* 205 * Allocate anon demand-zeroed area for uninitialized data 206 */ 207 if (bss_size != 0) { 208 vmaddr = virtual_offset + a_out->a_text + a_out->a_data; | 204 /* 205 * Allocate anon demand-zeroed area for uninitialized data 206 */ 207 if (bss_size != 0) { 208 vmaddr = virtual_offset + a_out->a_text + a_out->a_data; |
| 209 error = vm_map_find(&vmspace->vm_map, NULL, 0, &vmaddr, | 209 error = vm_map_find(&vmspace->vm_map, NULL, 0, &vmaddr, |
| 210 bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0); 211 if (error) 212 goto fail; 213#ifdef DEBUG 214 printf("imgact: bssaddr=%08lx, length=%08lx\n", 215 (u_long)vmaddr, bss_size); 216#endif 217 --- 6 unchanged lines hidden (view full) --- 224 vmspace->vm_tsize = round_page(a_out->a_text) >> PAGE_SHIFT; 225 vmspace->vm_dsize = round_page(a_out->a_data + bss_size) >> PAGE_SHIFT; 226 vmspace->vm_taddr = (caddr_t)virtual_offset; 227 vmspace->vm_daddr = (caddr_t)(virtual_offset + a_out->a_text); 228 229 /* Fill in image_params */ 230 imgp->interpreted = 0; 231 imgp->entry_addr = a_out->a_entry; | 210 bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0); 211 if (error) 212 goto fail; 213#ifdef DEBUG 214 printf("imgact: bssaddr=%08lx, length=%08lx\n", 215 (u_long)vmaddr, bss_size); 216#endif 217 --- 6 unchanged lines hidden (view full) --- 224 vmspace->vm_tsize = round_page(a_out->a_text) >> PAGE_SHIFT; 225 vmspace->vm_dsize = round_page(a_out->a_data + bss_size) >> PAGE_SHIFT; 226 vmspace->vm_taddr = (caddr_t)virtual_offset; 227 vmspace->vm_daddr = (caddr_t)(virtual_offset + a_out->a_text); 228 229 /* Fill in image_params */ 230 imgp->interpreted = 0; 231 imgp->entry_addr = a_out->a_entry; |
| 232 | 232 |
| 233 imgp->proc->p_sysent = &linux_sysvec; 234 235fail: 236 vn_lock(imgp->vp, LK_EXCLUSIVE | LK_RETRY, td); 237 return (error); 238} 239 240/* 241 * Tell kern_execve.c about it, with a little help from the linker. 242 */ 243static struct execsw linux_execsw = { exec_linux_imgact, "linux a.out" }; 244EXEC_SET(linuxaout, linux_execsw); | 233 imgp->proc->p_sysent = &linux_sysvec; 234 235fail: 236 vn_lock(imgp->vp, LK_EXCLUSIVE | LK_RETRY, td); 237 return (error); 238} 239 240/* 241 * Tell kern_execve.c about it, with a little help from the linker. 242 */ 243static struct execsw linux_execsw = { exec_linux_imgact, "linux a.out" }; 244EXEC_SET(linuxaout, linux_execsw); |