| kern_descrip.c (37951) | kern_descrip.c (41086) |
|---|---|
| 1/* 2 * Copyright (c) 1982, 1986, 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. --- 22 unchanged lines hidden (view full) --- 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)kern_descrip.c 8.6 (Berkeley) 4/19/94 | 1/* 2 * Copyright (c) 1982, 1986, 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. --- 22 unchanged lines hidden (view full) --- 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)kern_descrip.c 8.6 (Berkeley) 4/19/94 |
| 39 * $Id: kern_descrip.c,v 1.54 1998/07/15 06:10:16 bde Exp $ | 39 * $Id: kern_descrip.c,v 1.55 1998/07/29 17:38:13 bde Exp $ |
| 40 */ 41 42#include "opt_compat.h" 43#include "opt_devfs.h" 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/sysproto.h> --- 18 unchanged lines hidden (view full) --- 66#include <vm/vm_extern.h> 67 68#ifdef DEVFS 69#include <sys/devfsext.h> 70#endif /*DEVFS*/ 71 72static MALLOC_DEFINE(M_FILEDESC, "file desc", "Open file descriptor table"); 73MALLOC_DEFINE(M_FILE, "file", "Open file structure"); | 40 */ 41 42#include "opt_compat.h" 43#include "opt_devfs.h" 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/sysproto.h> --- 18 unchanged lines hidden (view full) --- 66#include <vm/vm_extern.h> 67 68#ifdef DEVFS 69#include <sys/devfsext.h> 70#endif /*DEVFS*/ 71 72static MALLOC_DEFINE(M_FILEDESC, "file desc", "Open file descriptor table"); 73MALLOC_DEFINE(M_FILE, "file", "Open file structure"); |
| 74static MALLOC_DEFINE(M_SIGIO, "sigio", "sigio structures"); |
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| 74 75 76static d_open_t fdopen; 77#define NUMFDESC 64 78 79#define CDEV_MAJOR 22 80static struct cdevsw fildesc_cdevsw = 81 { fdopen, noclose, noread, nowrite, --- 170 unchanged lines hidden (view full) --- 252 if (!error) 253 return (0); 254 fp->f_flag &= ~FNONBLOCK; 255 tmp = 0; 256 (void) (*fp->f_ops->fo_ioctl)(fp, FIONBIO, (caddr_t)&tmp, p); 257 return (error); 258 259 case F_GETOWN: | 75 76 77static d_open_t fdopen; 78#define NUMFDESC 64 79 80#define CDEV_MAJOR 22 81static struct cdevsw fildesc_cdevsw = 82 { fdopen, noclose, noread, nowrite, --- 170 unchanged lines hidden (view full) --- 253 if (!error) 254 return (0); 255 fp->f_flag &= ~FNONBLOCK; 256 tmp = 0; 257 (void) (*fp->f_ops->fo_ioctl)(fp, FIONBIO, (caddr_t)&tmp, p); 258 return (error); 259 260 case F_GETOWN: |
| 260 if (fp->f_type == DTYPE_SOCKET) { 261 p->p_retval[0] = ((struct socket *)fp->f_data)->so_pgid; 262 return (0); 263 } | |
| 264 error = (*fp->f_ops->fo_ioctl) | 261 error = (*fp->f_ops->fo_ioctl) |
| 265 (fp, TIOCGPGRP, (caddr_t)p->p_retval, p); 266 p->p_retval[0] = - p->p_retval[0]; | 262 (fp, FIOGETOWN, (caddr_t)p->p_retval, p); |
| 267 return (error); 268 269 case F_SETOWN: | 263 return (error); 264 265 case F_SETOWN: |
| 270 if (fp->f_type == DTYPE_SOCKET) { 271 ((struct socket *)fp->f_data)->so_pgid = uap->arg; 272 return (0); 273 } 274 if (uap->arg <= 0) { 275 uap->arg = -uap->arg; 276 } else { 277 struct proc *p1 = pfind(uap->arg); 278 if (p1 == 0) 279 return (ESRCH); 280 uap->arg = p1->p_pgrp->pg_id; 281 } | |
| 282 return ((*fp->f_ops->fo_ioctl) | 266 return ((*fp->f_ops->fo_ioctl) |
| 283 (fp, TIOCSPGRP, (caddr_t)&uap->arg, p)); | 267 (fp, FIOSETOWN, (caddr_t)&uap->arg, p)); |
| 284 285 case F_SETLKW: 286 flg |= F_WAIT; 287 /* Fall into F_SETLK */ 288 289 case F_SETLK: 290 if (fp->f_type != DTYPE_VNODE) 291 return (EBADF); --- 69 unchanged lines hidden (view full) --- 361 fp->f_count++; 362 if (new > fdp->fd_lastfile) 363 fdp->fd_lastfile = new; 364 *retval = new; 365 return (0); 366} 367 368/* | 268 269 case F_SETLKW: 270 flg |= F_WAIT; 271 /* Fall into F_SETLK */ 272 273 case F_SETLK: 274 if (fp->f_type != DTYPE_VNODE) 275 return (EBADF); --- 69 unchanged lines hidden (view full) --- 345 fp->f_count++; 346 if (new > fdp->fd_lastfile) 347 fdp->fd_lastfile = new; 348 *retval = new; 349 return (0); 350} 351 352/* |
| 353 * If sigio is on the list associated with a process or process group, 354 * disable signalling from the device, remove sigio from the list and 355 * free sigio. 356 */ 357void 358funsetown(sigio) 359 struct sigio *sigio; 360{ 361 int s; 362 363 if (sigio == NULL) 364 return; 365 s = splhigh(); 366 *(sigio->sio_myref) = NULL; 367 splx(s); 368 if (sigio->sio_pgid < 0) { 369 SLIST_REMOVE(&sigio->sio_pgrp->pg_sigiolst, sigio, 370 sigio, sio_pgsigio); 371 } else /* if ((*sigiop)->sio_pgid > 0) */ { 372 SLIST_REMOVE(&sigio->sio_proc->p_sigiolst, sigio, 373 sigio, sio_pgsigio); 374 } 375 crfree(sigio->sio_ucred); 376 FREE(sigio, M_SIGIO); 377} 378 379/* Free a list of sigio structures. */ 380void 381funsetownlst(sigiolst) 382 struct sigiolst *sigiolst; 383{ 384 struct sigio *sigio; 385 386 while ((sigio = sigiolst->slh_first) != NULL) 387 funsetown(sigio); 388} 389 390/* 391 * This is common code for FIOSETOWN ioctl called by fcntl(fd, F_SETOWN, arg). 392 * 393 * After permission checking, add a sigio structure to the sigio list for 394 * the process or process group. 395 */ 396int 397fsetown(pgid, sigiop) 398 pid_t pgid; 399 struct sigio **sigiop; 400{ 401 struct proc *proc = NULL; 402 struct pgrp *pgrp = NULL; 403 struct sigio *sigio; 404 int s; 405 406 if (pgid == 0) { 407 funsetown(*sigiop); 408 return (0); 409 } else if (pgid > 0) { 410 proc = pfind(pgid); 411 if (proc == NULL) 412 return (ESRCH); 413 /* 414 * Policy - Don't allow a process to FSETOWN a process 415 * in another session. 416 * 417 * Remove this test to allow maximum flexibility or 418 * restrict FSETOWN to the current process or process 419 * group for maximum safety. 420 */ 421 else if (proc->p_session != curproc->p_session) 422 return (EPERM); 423 } else /* if (pgid < 0) */ { 424 pgrp = pgfind(-pgid); 425 if (pgrp == NULL) 426 return (ESRCH); 427 /* 428 * Policy - Don't allow a process to FSETOWN a process 429 * in another session. 430 * 431 * Remove this test to allow maximum flexibility or 432 * restrict FSETOWN to the current process or process 433 * group for maximum safety. 434 */ 435 else if (pgrp->pg_session != curproc->p_session) 436 return (EPERM); 437 } 438 funsetown(*sigiop); 439 MALLOC(sigio, struct sigio *, sizeof(struct sigio), M_SIGIO, 440 M_WAITOK); 441 if (pgid > 0) { 442 SLIST_INSERT_HEAD(&proc->p_sigiolst, sigio, sio_pgsigio); 443 sigio->sio_proc = proc; 444 } else { 445 SLIST_INSERT_HEAD(&pgrp->pg_sigiolst, sigio, sio_pgsigio); 446 sigio->sio_pgrp = pgrp; 447 } 448 sigio->sio_pgid = pgid; 449 crhold(curproc->p_ucred); 450 sigio->sio_ucred = curproc->p_ucred; 451 /* It would be convenient if p_ruid was in ucred. */ 452 sigio->sio_ruid = curproc->p_cred->p_ruid; 453 sigio->sio_myref = sigiop; 454 s = splhigh(); 455 *sigiop = sigio; 456 splx(s); 457 return (0); 458} 459 460/* 461 * This is common code for FIOGETOWN ioctl called by fcntl(fd, F_GETOWN, arg). 462 */ 463pid_t 464fgetown(sigio) 465 struct sigio *sigio; 466{ 467 return (sigio != NULL ? sigio->sio_pgid : 0); 468} 469 470/* |
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| 369 * Close a file descriptor. 370 */ 371#ifndef _SYS_SYSPROTO_H_ 372struct close_args { 373 int fd; 374}; 375#endif 376/* ARGSUSED */ --- 832 unchanged lines hidden --- | 471 * Close a file descriptor. 472 */ 473#ifndef _SYS_SYSPROTO_H_ 474struct close_args { 475 int fd; 476}; 477#endif 478/* ARGSUSED */ --- 832 unchanged lines hidden --- |