| sys_process.c (253939) | sys_process.c (253953) |
|---|---|
| 1/*- 2 * Copyright (c) 1994, Sean Eric Fagan 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 --- 16 unchanged lines hidden (view full) --- 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1994, Sean Eric Fagan 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 --- 16 unchanged lines hidden (view full) --- 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> |
| 33__FBSDID("$FreeBSD: head/sys/kern/sys_process.c 253939 2013-08-04 21:07:24Z attilio $"); | 33__FBSDID("$FreeBSD: head/sys/kern/sys_process.c 253953 2013-08-05 08:55:35Z attilio $"); |
| 34 35#include "opt_compat.h" 36 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/lock.h> 40#include <sys/mutex.h> 41#include <sys/syscallsubr.h> --- 216 unchanged lines hidden (view full) --- 258 /* 259 * If we are writing, then we request vm_fault() to create a private 260 * copy of each page. Since these copies will not be writeable by the 261 * process, we must explicity request that they be dirtied. 262 */ 263 writing = uio->uio_rw == UIO_WRITE; 264 reqprot = writing ? VM_PROT_COPY | VM_PROT_READ : VM_PROT_READ; 265 fault_flags = writing ? VM_FAULT_DIRTY : VM_FAULT_NORMAL; | 34 35#include "opt_compat.h" 36 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/lock.h> 40#include <sys/mutex.h> 41#include <sys/syscallsubr.h> --- 216 unchanged lines hidden (view full) --- 258 /* 259 * If we are writing, then we request vm_fault() to create a private 260 * copy of each page. Since these copies will not be writeable by the 261 * process, we must explicity request that they be dirtied. 262 */ 263 writing = uio->uio_rw == UIO_WRITE; 264 reqprot = writing ? VM_PROT_COPY | VM_PROT_READ : VM_PROT_READ; 265 fault_flags = writing ? VM_FAULT_DIRTY : VM_FAULT_NORMAL; |
| 266 fault_flags |= VM_FAULT_IOBUSY; | |
| 267 268 /* 269 * Only map in one page at a time. We don't have to, but it 270 * makes things easier. This way is trivial - right? 271 */ 272 do { 273 vm_offset_t uva; 274 u_int len; --- 8 unchanged lines hidden (view full) --- 283 page_offset = uva - pageno; 284 285 /* 286 * How many bytes to copy 287 */ 288 len = min(PAGE_SIZE - page_offset, uio->uio_resid); 289 290 /* | 266 267 /* 268 * Only map in one page at a time. We don't have to, but it 269 * makes things easier. This way is trivial - right? 270 */ 271 do { 272 vm_offset_t uva; 273 u_int len; --- 8 unchanged lines hidden (view full) --- 282 page_offset = uva - pageno; 283 284 /* 285 * How many bytes to copy 286 */ 287 len = min(PAGE_SIZE - page_offset, uio->uio_resid); 288 289 /* |
| 291 * Fault and busy the page on behalf of the process. | 290 * Fault and hold the page on behalf of the process. |
| 292 */ | 291 */ |
| 293 error = vm_fault_handle(map, pageno, reqprot, fault_flags, &m); | 292 error = vm_fault_hold(map, pageno, reqprot, fault_flags, &m); |
| 294 if (error != KERN_SUCCESS) { 295 if (error == KERN_RESOURCE_SHORTAGE) 296 error = ENOMEM; 297 else 298 error = EFAULT; 299 break; 300 } 301 --- 9 unchanged lines hidden (view full) --- 311 PAGE_SIZE, VM_PROT_EXECUTE)) 312 vm_sync_icache(map, uva, len); 313 vm_map_unlock_read(map); 314 } 315 316 /* 317 * Release the page. 318 */ | 293 if (error != KERN_SUCCESS) { 294 if (error == KERN_RESOURCE_SHORTAGE) 295 error = ENOMEM; 296 else 297 error = EFAULT; 298 break; 299 } 300 --- 9 unchanged lines hidden (view full) --- 310 PAGE_SIZE, VM_PROT_EXECUTE)) 311 vm_sync_icache(map, uva, len); 312 vm_map_unlock_read(map); 313 } 314 315 /* 316 * Release the page. 317 */ |
| 319 VM_OBJECT_WLOCK(m->object); 320 vm_page_io_finish(m); 321 VM_OBJECT_WUNLOCK(m->object); | 318 vm_page_lock(m); 319 vm_page_unhold(m); 320 vm_page_unlock(m); |
| 322 323 } while (error == 0 && uio->uio_resid > 0); 324 325 return (error); 326} 327 328static int 329ptrace_vm_entry(struct thread *td, struct proc *p, struct ptrace_vm_entry *pve) --- 914 unchanged lines hidden --- | 321 322 } while (error == 0 && uio->uio_resid > 0); 323 324 return (error); 325} 326 327static int 328ptrace_vm_entry(struct thread *td, struct proc *p, struct ptrace_vm_entry *pve) --- 914 unchanged lines hidden --- |