| imgact_aout.c (32286) | imgact_aout.c (32446) |
|---|---|
| 1/* 2 * Copyright (c) 1993, David Greenman 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * | 1/* 2 * Copyright (c) 1993, David Greenman 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * |
| 26 * $Id: imgact_aout.c,v 1.36 1997/09/02 20:05:33 bde Exp $ | 26 * $Id: imgact_aout.c,v 1.37 1998/01/06 05:15:25 dyson Exp $ |
| 27 */ 28 29#include <sys/param.h> 30#include <sys/resourcevar.h> 31#include <sys/exec.h> 32#include <sys/mman.h> 33#include <sys/imgact.h> 34#include <sys/imgact_aout.h> 35#include <sys/kernel.h> 36#include <sys/proc.h> 37#include <sys/sysent.h> 38#include <sys/vnode.h> | 27 */ 28 29#include <sys/param.h> 30#include <sys/resourcevar.h> 31#include <sys/exec.h> 32#include <sys/mman.h> 33#include <sys/imgact.h> 34#include <sys/imgact_aout.h> 35#include <sys/kernel.h> 36#include <sys/proc.h> 37#include <sys/sysent.h> 38#include <sys/vnode.h> |
| 39#include <sys/systm.h> |
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| 39 40#include <vm/vm.h> 41#include <vm/vm_param.h> 42#include <vm/vm_prot.h> 43#include <sys/lock.h> 44#include <vm/pmap.h> 45#include <vm/vm_map.h> | 40 41#include <vm/vm.h> 42#include <vm/vm_param.h> 43#include <vm/vm_prot.h> 44#include <sys/lock.h> 45#include <vm/pmap.h> 46#include <vm/vm_map.h> |
| 47#include <vm/vm_object.h> |
|
| 46#include <vm/vm_extern.h> 47 48static int exec_aout_imgact __P((struct image_params *imgp)); 49 50int 51exec_aout_imgact(imgp) 52 struct image_params *imgp; 53{ 54 const struct exec *a_out = (const struct exec *) imgp->image_header; 55 struct vmspace *vmspace; | 48#include <vm/vm_extern.h> 49 50static int exec_aout_imgact __P((struct image_params *imgp)); 51 52int 53exec_aout_imgact(imgp) 54 struct image_params *imgp; 55{ 56 const struct exec *a_out = (const struct exec *) imgp->image_header; 57 struct vmspace *vmspace; |
| 56 vm_offset_t vmaddr; | 58 struct vnode *vp; 59 vm_object_t object; 60 vm_offset_t text_end, data_end; |
| 57 unsigned long virtual_offset; 58 unsigned long file_offset; 59 unsigned long bss_size; 60 int error; 61 62 /* 63 * Linux and *BSD binaries look very much alike, 64 * only the machine id is different: --- 75 unchanged lines hidden (view full) --- 140 */ 141 exec_new_vmspace(imgp); 142 143 /* 144 * The vm space can be changed by exec_new_vmspace 145 */ 146 vmspace = imgp->proc->p_vmspace; 147 | 61 unsigned long virtual_offset; 62 unsigned long file_offset; 63 unsigned long bss_size; 64 int error; 65 66 /* 67 * Linux and *BSD binaries look very much alike, 68 * only the machine id is different: --- 75 unchanged lines hidden (view full) --- 144 */ 145 exec_new_vmspace(imgp); 146 147 /* 148 * The vm space can be changed by exec_new_vmspace 149 */ 150 vmspace = imgp->proc->p_vmspace; 151 |
| 148 /* 149 * Map text/data read/execute 150 */ 151 vmaddr = virtual_offset; 152 error = 153 vm_mmap(&vmspace->vm_map, /* map */ 154 &vmaddr, /* address */ 155 a_out->a_text + a_out->a_data, /* size */ 156 VM_PROT_READ | VM_PROT_EXECUTE, /* protection */ 157 VM_PROT_ALL, /* max protection */ 158 MAP_PRIVATE | MAP_FIXED, /* flags */ 159 (caddr_t)imgp->vp, /* vnode */ 160 file_offset); /* offset */ | 152 vp = imgp->vp; 153 object = vp->v_object; 154 vm_object_reference(object); 155 156 text_end = virtual_offset + a_out->a_text; 157 error = vm_map_insert(&vmspace->vm_map, object, 158 file_offset, 159 virtual_offset, text_end, 160 VM_PROT_READ | VM_PROT_EXECUTE, VM_PROT_ALL, 161 MAP_COPY_NEEDED | MAP_COPY_ON_WRITE); |
| 161 if (error) 162 return (error); 163 | 162 if (error) 163 return (error); 164 |
| 164 /* 165 * allow writing of data 166 */ 167 vm_map_protect(&vmspace->vm_map, 168 vmaddr + a_out->a_text, 169 vmaddr + a_out->a_text + a_out->a_data, 170 VM_PROT_ALL, 171 FALSE); 172 173 if (bss_size != 0) { 174 /* 175 * Allocate demand-zeroed area for uninitialized data 176 * "bss" = 'block started by symbol' - named after the IBM 7090 177 * instruction of the same name. 178 */ 179 vmaddr = virtual_offset + a_out->a_text + a_out->a_data; 180 error = vm_map_find(&vmspace->vm_map, NULL, 0, 181 &vmaddr, bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0); | 165 data_end = text_end + a_out->a_data; 166 if (a_out->a_data) { 167 vm_object_reference(object); 168 error = vm_map_insert(&vmspace->vm_map, object, 169 file_offset + a_out->a_text, 170 text_end, data_end, 171 VM_PROT_ALL, VM_PROT_ALL, 172 MAP_COPY_NEEDED | MAP_COPY_ON_WRITE); |
| 182 if (error) 183 return (error); 184 } 185 | 173 if (error) 174 return (error); 175 } 176 |
| 177 pmap_object_init_pt(&vmspace->vm_pmap, virtual_offset, 178 object, (vm_pindex_t) OFF_TO_IDX(file_offset), 179 a_out->a_text + a_out->a_data, 0); 180 181 if (bss_size) { 182 error = vm_map_insert(&vmspace->vm_map, NULL, 0, 183 data_end, data_end + bss_size, 184 VM_PROT_ALL, VM_PROT_ALL, 0); 185 if (error) 186 return (error); 187 } 188 |
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| 186 /* Fill in process VM information */ 187 vmspace->vm_tsize = a_out->a_text >> PAGE_SHIFT; 188 vmspace->vm_dsize = (a_out->a_data + bss_size) >> PAGE_SHIFT; 189 vmspace->vm_taddr = (caddr_t) virtual_offset; 190 vmspace->vm_daddr = (caddr_t) virtual_offset + a_out->a_text; 191 192 /* Fill in image_params */ 193 imgp->interpreted = 0; --- 17 unchanged lines hidden --- | 189 /* Fill in process VM information */ 190 vmspace->vm_tsize = a_out->a_text >> PAGE_SHIFT; 191 vmspace->vm_dsize = (a_out->a_data + bss_size) >> PAGE_SHIFT; 192 vmspace->vm_taddr = (caddr_t) virtual_offset; 193 vmspace->vm_daddr = (caddr_t) virtual_offset + a_out->a_text; 194 195 /* Fill in image_params */ 196 imgp->interpreted = 0; --- 17 unchanged lines hidden --- |