kern_sysctl.c revision 1.86.2.3
1 /* $NetBSD: kern_sysctl.c,v 1.86.2.3 2001/04/09 01:57:54 nathanw Exp $ */ 2 3 /*- 4 * Copyright (c) 1982, 1986, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Mike Karels at Berkeley Software Design, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 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_sysctl.c 8.9 (Berkeley) 5/20/95 39 */ 40 41 /* 42 * sysctl system call. 43 */ 44 45 #include "opt_ddb.h" 46 #include "opt_insecure.h" 47 #include "opt_defcorename.h" 48 #include "opt_sysv.h" 49 #include "pty.h" 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/kernel.h> 54 #include <sys/buf.h> 55 #include <sys/device.h> 56 #include <sys/disklabel.h> 57 #include <sys/dkstat.h> 58 #include <sys/exec.h> 59 #include <sys/file.h> 60 #include <sys/ioctl.h> 61 #include <sys/malloc.h> 62 #include <sys/mount.h> 63 #include <sys/msgbuf.h> 64 #include <sys/pool.h> 65 #include <sys/lwp.h> 66 #include <sys/proc.h> 67 #include <sys/resource.h> 68 #include <sys/resourcevar.h> 69 #include <sys/syscallargs.h> 70 #include <sys/tty.h> 71 #include <sys/unistd.h> 72 #include <sys/vnode.h> 73 #define __SYSCTL_PRIVATE 74 #include <sys/sysctl.h> 75 #include <sys/lock.h> 76 77 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 78 #include <sys/ipc.h> 79 #endif 80 #ifdef SYSVMSG 81 #include <sys/msg.h> 82 #endif 83 #ifdef SYSVSEM 84 #include <sys/sem.h> 85 #endif 86 #ifdef SYSVSHM 87 #include <sys/shm.h> 88 #endif 89 90 #include <dev/cons.h> 91 92 #if defined(DDB) 93 #include <ddb/ddbvar.h> 94 #endif 95 96 #define PTRTOINT64(foo) ((u_int64_t)(uintptr_t)(foo)) 97 98 static int sysctl_file __P((void *, size_t *)); 99 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 100 static int sysctl_sysvipc __P((int *, u_int, void *, size_t *)); 101 #endif 102 static int sysctl_msgbuf __P((void *, size_t *)); 103 static int sysctl_doeproc __P((int *, u_int, void *, size_t *)); 104 #ifdef MULTIPROCESSOR 105 static int sysctl_docptime __P((void *, size_t *, void *)); 106 static int sysctl_ncpus __P((void)); 107 #endif 108 static void fill_kproc2 __P((struct proc *, struct kinfo_proc2 *)); 109 static int sysctl_procargs __P((int *, u_int, void *, size_t *, struct proc *)); 110 #if NPTY > 0 111 static int sysctl_pty __P((void *, size_t *, void *, size_t)); 112 #endif 113 114 static struct lwp *proc_representative_lwp(struct proc *); 115 116 /* 117 * The `sysctl_memlock' is intended to keep too many processes from 118 * locking down memory by doing sysctls at once. Whether or not this 119 * is really a good idea to worry about it probably a subject of some 120 * debate. 121 */ 122 struct lock sysctl_memlock; 123 124 void 125 sysctl_init(void) 126 { 127 128 lockinit(&sysctl_memlock, PRIBIO|PCATCH, "sysctl", 0, 0); 129 } 130 131 int 132 sys___sysctl(l, v, retval) 133 struct lwp *l; 134 void *v; 135 register_t *retval; 136 { 137 struct sys___sysctl_args /* { 138 syscallarg(int *) name; 139 syscallarg(u_int) namelen; 140 syscallarg(void *) old; 141 syscallarg(size_t *) oldlenp; 142 syscallarg(void *) new; 143 syscallarg(size_t) newlen; 144 } */ *uap = v; 145 struct proc *p = l->l_proc; 146 int error; 147 size_t savelen = 0, oldlen = 0; 148 sysctlfn *fn; 149 int name[CTL_MAXNAME]; 150 size_t *oldlenp; 151 152 /* 153 * all top-level sysctl names are non-terminal 154 */ 155 if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 2) 156 return (EINVAL); 157 error = copyin(SCARG(uap, name), &name, 158 SCARG(uap, namelen) * sizeof(int)); 159 if (error) 160 return (error); 161 162 /* 163 * For all but CTL_PROC, must be root to change a value. 164 * For CTL_PROC, must be root, or owner of the proc (and not suid), 165 * this is checked in proc_sysctl() (once we know the targer proc). 166 */ 167 if (SCARG(uap, new) != NULL && name[0] != CTL_PROC && 168 (error = suser(p->p_ucred, &p->p_acflag))) 169 return error; 170 171 switch (name[0]) { 172 case CTL_KERN: 173 fn = kern_sysctl; 174 break; 175 case CTL_HW: 176 fn = hw_sysctl; 177 break; 178 case CTL_VM: 179 fn = uvm_sysctl; 180 break; 181 case CTL_NET: 182 fn = net_sysctl; 183 break; 184 case CTL_VFS: 185 fn = vfs_sysctl; 186 break; 187 case CTL_MACHDEP: 188 fn = cpu_sysctl; 189 break; 190 #ifdef DEBUG 191 case CTL_DEBUG: 192 fn = debug_sysctl; 193 break; 194 #endif 195 #ifdef DDB 196 case CTL_DDB: 197 fn = ddb_sysctl; 198 break; 199 #endif 200 case CTL_PROC: 201 fn = proc_sysctl; 202 break; 203 default: 204 return (EOPNOTSUPP); 205 } 206 207 /* 208 * XXX Hey, we wire `old', but what about `new'? 209 */ 210 211 oldlenp = SCARG(uap, oldlenp); 212 if (oldlenp) { 213 if ((error = copyin(oldlenp, &oldlen, sizeof(oldlen)))) 214 return (error); 215 oldlenp = &oldlen; 216 } 217 if (SCARG(uap, old) != NULL) { 218 error = lockmgr(&sysctl_memlock, LK_EXCLUSIVE, NULL); 219 if (error) 220 return (error); 221 error = uvm_vslock(p, SCARG(uap, old), oldlen, 222 VM_PROT_READ|VM_PROT_WRITE); 223 if (error) { 224 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 225 return error; 226 } 227 savelen = oldlen; 228 } 229 error = (*fn)(name + 1, SCARG(uap, namelen) - 1, SCARG(uap, old), 230 oldlenp, SCARG(uap, new), SCARG(uap, newlen), p); 231 if (SCARG(uap, old) != NULL) { 232 uvm_vsunlock(p, SCARG(uap, old), savelen); 233 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 234 } 235 if (error) 236 return (error); 237 if (SCARG(uap, oldlenp)) 238 error = copyout(&oldlen, SCARG(uap, oldlenp), sizeof(oldlen)); 239 return (error); 240 } 241 242 /* 243 * Attributes stored in the kernel. 244 */ 245 char hostname[MAXHOSTNAMELEN]; 246 int hostnamelen; 247 248 char domainname[MAXHOSTNAMELEN]; 249 int domainnamelen; 250 251 long hostid; 252 253 #ifdef INSECURE 254 int securelevel = -1; 255 #else 256 int securelevel = 0; 257 #endif 258 259 #ifndef DEFCORENAME 260 #define DEFCORENAME "%n.core" 261 #endif 262 char defcorename[MAXPATHLEN] = DEFCORENAME; 263 int defcorenamelen = sizeof(DEFCORENAME); 264 265 extern int kern_logsigexit; 266 extern fixpt_t ccpu; 267 268 #ifndef MULTIPROCESSOR 269 #define sysctl_ncpus() 1 270 #endif 271 272 #ifdef MULTIPROCESSOR 273 274 #ifndef CPU_INFO_FOREACH 275 #define CPU_INFO_ITERATOR int 276 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 277 #endif 278 279 static int 280 sysctl_docptime(oldp, oldlenp, newp) 281 void *oldp; 282 size_t *oldlenp; 283 void *newp; 284 { 285 u_int64_t cp_time[CPUSTATES]; 286 int i; 287 struct cpu_info *ci; 288 CPU_INFO_ITERATOR cii; 289 290 for (i=0; i<CPUSTATES; i++) 291 cp_time[i] = 0; 292 293 for (CPU_INFO_FOREACH(cii, ci)) { 294 for (i=0; i<CPUSTATES; i++) 295 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 296 } 297 return (sysctl_rdstruct(oldp, oldlenp, newp, 298 cp_time, sizeof(cp_time))); 299 } 300 301 static int 302 sysctl_ncpus(void) 303 { 304 struct cpu_info *ci; 305 CPU_INFO_ITERATOR cii; 306 307 int ncpus = 0; 308 for (CPU_INFO_FOREACH(cii, ci)) 309 ncpus++; 310 return ncpus; 311 } 312 313 #endif 314 315 /* 316 * kernel related system variables. 317 */ 318 int 319 kern_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 320 int *name; 321 u_int namelen; 322 void *oldp; 323 size_t *oldlenp; 324 void *newp; 325 size_t newlen; 326 struct proc *p; 327 { 328 int error, level, inthostid; 329 int old_autonicetime; 330 int old_vnodes; 331 dev_t consdev; 332 333 /* All sysctl names at this level, except for a few, are terminal. */ 334 switch (name[0]) { 335 case KERN_PROC: 336 case KERN_PROC2: 337 case KERN_PROF: 338 case KERN_MBUF: 339 case KERN_PROC_ARGS: 340 case KERN_SYSVIPC_INFO: 341 /* Not terminal. */ 342 break; 343 default: 344 if (namelen != 1) 345 return (ENOTDIR); /* overloaded */ 346 } 347 348 switch (name[0]) { 349 case KERN_OSTYPE: 350 return (sysctl_rdstring(oldp, oldlenp, newp, ostype)); 351 case KERN_OSRELEASE: 352 return (sysctl_rdstring(oldp, oldlenp, newp, osrelease)); 353 case KERN_OSREV: 354 return (sysctl_rdint(oldp, oldlenp, newp, __NetBSD_Version__)); 355 case KERN_VERSION: 356 return (sysctl_rdstring(oldp, oldlenp, newp, version)); 357 case KERN_MAXVNODES: 358 old_vnodes = desiredvnodes; 359 error = sysctl_int(oldp, oldlenp, newp, newlen, &desiredvnodes); 360 if (old_vnodes > desiredvnodes) { 361 desiredvnodes = old_vnodes; 362 return (EINVAL); 363 } 364 return (error); 365 case KERN_MAXPROC: 366 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxproc)); 367 case KERN_MAXFILES: 368 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxfiles)); 369 case KERN_ARGMAX: 370 return (sysctl_rdint(oldp, oldlenp, newp, ARG_MAX)); 371 case KERN_SECURELVL: 372 level = securelevel; 373 if ((error = sysctl_int(oldp, oldlenp, newp, newlen, &level)) || 374 newp == NULL) 375 return (error); 376 if (level < securelevel && p->p_pid != 1) 377 return (EPERM); 378 securelevel = level; 379 return (0); 380 case KERN_HOSTNAME: 381 error = sysctl_string(oldp, oldlenp, newp, newlen, 382 hostname, sizeof(hostname)); 383 if (newp && !error) 384 hostnamelen = newlen; 385 return (error); 386 case KERN_DOMAINNAME: 387 error = sysctl_string(oldp, oldlenp, newp, newlen, 388 domainname, sizeof(domainname)); 389 if (newp && !error) 390 domainnamelen = newlen; 391 return (error); 392 case KERN_HOSTID: 393 inthostid = hostid; /* XXX assumes sizeof long <= sizeof int */ 394 error = sysctl_int(oldp, oldlenp, newp, newlen, &inthostid); 395 hostid = inthostid; 396 return (error); 397 case KERN_CLOCKRATE: 398 return (sysctl_clockrate(oldp, oldlenp)); 399 case KERN_BOOTTIME: 400 return (sysctl_rdstruct(oldp, oldlenp, newp, &boottime, 401 sizeof(struct timeval))); 402 case KERN_VNODE: 403 return (sysctl_vnode(oldp, oldlenp, p)); 404 case KERN_PROC: 405 case KERN_PROC2: 406 return (sysctl_doeproc(name, namelen, oldp, oldlenp)); 407 case KERN_PROC_ARGS: 408 return (sysctl_procargs(name + 1, namelen - 1, 409 oldp, oldlenp, p)); 410 case KERN_FILE: 411 return (sysctl_file(oldp, oldlenp)); 412 #ifdef GPROF 413 case KERN_PROF: 414 return (sysctl_doprof(name + 1, namelen - 1, oldp, oldlenp, 415 newp, newlen)); 416 #endif 417 case KERN_POSIX1: 418 return (sysctl_rdint(oldp, oldlenp, newp, _POSIX_VERSION)); 419 case KERN_NGROUPS: 420 return (sysctl_rdint(oldp, oldlenp, newp, NGROUPS_MAX)); 421 case KERN_JOB_CONTROL: 422 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 423 case KERN_SAVED_IDS: 424 #ifdef _POSIX_SAVED_IDS 425 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 426 #else 427 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 428 #endif 429 case KERN_MAXPARTITIONS: 430 return (sysctl_rdint(oldp, oldlenp, newp, MAXPARTITIONS)); 431 case KERN_RAWPARTITION: 432 return (sysctl_rdint(oldp, oldlenp, newp, RAW_PART)); 433 #ifdef NTP 434 case KERN_NTPTIME: 435 return (sysctl_ntptime(oldp, oldlenp)); 436 #endif 437 case KERN_AUTONICETIME: 438 old_autonicetime = autonicetime; 439 error = sysctl_int(oldp, oldlenp, newp, newlen, &autonicetime); 440 if (autonicetime < 0) 441 autonicetime = old_autonicetime; 442 return (error); 443 case KERN_AUTONICEVAL: 444 error = sysctl_int(oldp, oldlenp, newp, newlen, &autoniceval); 445 if (autoniceval < PRIO_MIN) 446 autoniceval = PRIO_MIN; 447 if (autoniceval > PRIO_MAX) 448 autoniceval = PRIO_MAX; 449 return (error); 450 case KERN_RTC_OFFSET: 451 return (sysctl_rdint(oldp, oldlenp, newp, rtc_offset)); 452 case KERN_ROOT_DEVICE: 453 return (sysctl_rdstring(oldp, oldlenp, newp, 454 root_device->dv_xname)); 455 case KERN_MSGBUFSIZE: 456 /* 457 * deal with cases where the message buffer has 458 * become corrupted. 459 */ 460 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 461 msgbufenabled = 0; 462 return (ENXIO); 463 } 464 return (sysctl_rdint(oldp, oldlenp, newp, msgbufp->msg_bufs)); 465 case KERN_FSYNC: 466 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 467 case KERN_SYSVMSG: 468 #ifdef SYSVMSG 469 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 470 #else 471 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 472 #endif 473 case KERN_SYSVSEM: 474 #ifdef SYSVSEM 475 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 476 #else 477 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 478 #endif 479 case KERN_SYSVSHM: 480 #ifdef SYSVSHM 481 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 482 #else 483 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 484 #endif 485 case KERN_DEFCORENAME: 486 if (newp && newlen < 1) 487 return (EINVAL); 488 error = sysctl_string(oldp, oldlenp, newp, newlen, 489 defcorename, sizeof(defcorename)); 490 if (newp && !error) 491 defcorenamelen = newlen; 492 return (error); 493 case KERN_SYNCHRONIZED_IO: 494 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 495 case KERN_IOV_MAX: 496 return (sysctl_rdint(oldp, oldlenp, newp, IOV_MAX)); 497 case KERN_MBUF: 498 return (sysctl_dombuf(name + 1, namelen - 1, oldp, oldlenp, 499 newp, newlen)); 500 case KERN_MAPPED_FILES: 501 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 502 case KERN_MEMLOCK: 503 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 504 case KERN_MEMLOCK_RANGE: 505 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 506 case KERN_MEMORY_PROTECTION: 507 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 508 case KERN_LOGIN_NAME_MAX: 509 return (sysctl_rdint(oldp, oldlenp, newp, LOGIN_NAME_MAX)); 510 case KERN_LOGSIGEXIT: 511 return (sysctl_int(oldp, oldlenp, newp, newlen, 512 &kern_logsigexit)); 513 case KERN_FSCALE: 514 return (sysctl_rdint(oldp, oldlenp, newp, FSCALE)); 515 case KERN_CCPU: 516 return (sysctl_rdint(oldp, oldlenp, newp, ccpu)); 517 case KERN_CP_TIME: 518 #ifndef MULTIPROCESSOR 519 return (sysctl_rdstruct(oldp, oldlenp, newp, 520 curcpu()->ci_schedstate.spc_cp_time, 521 sizeof(curcpu()->ci_schedstate.spc_cp_time))); 522 #else 523 return (sysctl_docptime(oldp, oldlenp, newp)); 524 #endif 525 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 526 case KERN_SYSVIPC_INFO: 527 return (sysctl_sysvipc(name + 1, namelen - 1, oldp, oldlenp)); 528 #endif 529 case KERN_MSGBUF: 530 return (sysctl_msgbuf(oldp, oldlenp)); 531 case KERN_CONSDEV: 532 if (cn_tab != NULL) 533 consdev = cn_tab->cn_dev; 534 else 535 consdev = NODEV; 536 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 537 sizeof consdev)); 538 #if NPTY > 0 539 case KERN_MAXPTYS: 540 return sysctl_pty(oldp, oldlenp, newp, newlen); 541 #endif 542 default: 543 return (EOPNOTSUPP); 544 } 545 /* NOTREACHED */ 546 } 547 548 /* 549 * hardware related system variables. 550 */ 551 int 552 hw_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 553 int *name; 554 u_int namelen; 555 void *oldp; 556 size_t *oldlenp; 557 void *newp; 558 size_t newlen; 559 struct proc *p; 560 { 561 562 /* all sysctl names at this level are terminal */ 563 if (namelen != 1) 564 return (ENOTDIR); /* overloaded */ 565 566 switch (name[0]) { 567 case HW_MACHINE: 568 return (sysctl_rdstring(oldp, oldlenp, newp, machine)); 569 case HW_MACHINE_ARCH: 570 return (sysctl_rdstring(oldp, oldlenp, newp, machine_arch)); 571 case HW_MODEL: 572 return (sysctl_rdstring(oldp, oldlenp, newp, cpu_model)); 573 case HW_NCPU: 574 return (sysctl_rdint(oldp, oldlenp, newp, sysctl_ncpus())); 575 case HW_BYTEORDER: 576 return (sysctl_rdint(oldp, oldlenp, newp, BYTE_ORDER)); 577 case HW_PHYSMEM: 578 return (sysctl_rdint(oldp, oldlenp, newp, ctob(physmem))); 579 case HW_USERMEM: 580 return (sysctl_rdint(oldp, oldlenp, newp, 581 ctob(physmem - uvmexp.wired))); 582 case HW_PAGESIZE: 583 return (sysctl_rdint(oldp, oldlenp, newp, PAGE_SIZE)); 584 case HW_ALIGNBYTES: 585 return (sysctl_rdint(oldp, oldlenp, newp, ALIGNBYTES)); 586 case HW_CNMAGIC: { 587 char magic[CNS_LEN]; 588 int error; 589 590 if (oldp) 591 cn_get_magic(magic, CNS_LEN); 592 error = sysctl_string(oldp, oldlenp, newp, newlen, 593 magic, sizeof(magic)); 594 if (newp && !error) { 595 error = cn_set_magic(magic); 596 } 597 return (error); 598 } 599 default: 600 return (EOPNOTSUPP); 601 } 602 /* NOTREACHED */ 603 } 604 605 #ifdef DEBUG 606 /* 607 * Debugging related system variables. 608 */ 609 struct ctldebug debug0, debug1, debug2, debug3, debug4; 610 struct ctldebug debug5, debug6, debug7, debug8, debug9; 611 struct ctldebug debug10, debug11, debug12, debug13, debug14; 612 struct ctldebug debug15, debug16, debug17, debug18, debug19; 613 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 614 &debug0, &debug1, &debug2, &debug3, &debug4, 615 &debug5, &debug6, &debug7, &debug8, &debug9, 616 &debug10, &debug11, &debug12, &debug13, &debug14, 617 &debug15, &debug16, &debug17, &debug18, &debug19, 618 }; 619 int 620 debug_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 621 int *name; 622 u_int namelen; 623 void *oldp; 624 size_t *oldlenp; 625 void *newp; 626 size_t newlen; 627 struct proc *p; 628 { 629 struct ctldebug *cdp; 630 631 /* all sysctl names at this level are name and field */ 632 if (namelen != 2) 633 return (ENOTDIR); /* overloaded */ 634 cdp = debugvars[name[0]]; 635 if (name[0] >= CTL_DEBUG_MAXID || cdp->debugname == 0) 636 return (EOPNOTSUPP); 637 switch (name[1]) { 638 case CTL_DEBUG_NAME: 639 return (sysctl_rdstring(oldp, oldlenp, newp, cdp->debugname)); 640 case CTL_DEBUG_VALUE: 641 return (sysctl_int(oldp, oldlenp, newp, newlen, cdp->debugvar)); 642 default: 643 return (EOPNOTSUPP); 644 } 645 /* NOTREACHED */ 646 } 647 #endif /* DEBUG */ 648 649 int 650 proc_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 651 int *name; 652 u_int namelen; 653 void *oldp; 654 size_t *oldlenp; 655 void *newp; 656 size_t newlen; 657 struct proc *p; 658 { 659 struct proc *ptmp = NULL; 660 const struct proclist_desc *pd; 661 int error = 0; 662 struct rlimit alim; 663 struct plimit *newplim; 664 char *tmps = NULL; 665 int i, curlen, len; 666 667 if (namelen < 2) 668 return EINVAL; 669 670 if (name[0] == PROC_CURPROC) { 671 ptmp = p; 672 } else { 673 proclist_lock_read(); 674 for (pd = proclists; pd->pd_list != NULL; pd++) { 675 for (ptmp = LIST_FIRST(pd->pd_list); ptmp != NULL; 676 ptmp = LIST_NEXT(ptmp, p_list)) { 677 /* Skip embryonic processes. */ 678 if (ptmp->p_stat == SIDL) 679 continue; 680 if (ptmp->p_pid == (pid_t)name[0]) 681 break; 682 } 683 if (ptmp != NULL) 684 break; 685 } 686 proclist_unlock_read(); 687 if (ptmp == NULL) 688 return(ESRCH); 689 if (p->p_ucred->cr_uid != 0) { 690 if(p->p_cred->p_ruid != ptmp->p_cred->p_ruid || 691 p->p_cred->p_ruid != ptmp->p_cred->p_svuid) 692 return EPERM; 693 if (ptmp->p_cred->p_rgid != ptmp->p_cred->p_svgid) 694 return EPERM; /* sgid proc */ 695 for (i = 0; i < p->p_ucred->cr_ngroups; i++) { 696 if (p->p_ucred->cr_groups[i] == 697 ptmp->p_cred->p_rgid) 698 break; 699 } 700 if (i == p->p_ucred->cr_ngroups) 701 return EPERM; 702 } 703 } 704 if (name[1] == PROC_PID_CORENAME) { 705 if (namelen != 2) 706 return EINVAL; 707 /* 708 * Can't use sysctl_string() here because we may malloc a new 709 * area during the process, so we have to do it by hand. 710 */ 711 curlen = strlen(ptmp->p_limit->pl_corename) + 1; 712 if (oldlenp && *oldlenp < curlen) { 713 if (!oldp) 714 *oldlenp = curlen; 715 return (ENOMEM); 716 } 717 if (newp) { 718 if (securelevel > 2) 719 return EPERM; 720 if (newlen > MAXPATHLEN) 721 return ENAMETOOLONG; 722 tmps = malloc(newlen + 1, M_TEMP, M_WAITOK); 723 if (tmps == NULL) 724 return ENOMEM; 725 error = copyin(newp, tmps, newlen + 1); 726 tmps[newlen] = '\0'; 727 if (error) 728 goto cleanup; 729 /* Enforce to be either 'core' for end with '.core' */ 730 if (newlen < 4) { /* c.o.r.e */ 731 error = EINVAL; 732 goto cleanup; 733 } 734 len = newlen - 4; 735 if (len > 0) { 736 if (tmps[len - 1] != '.' && 737 tmps[len - 1] != '/') { 738 error = EINVAL; 739 goto cleanup; 740 } 741 } 742 if (strcmp(&tmps[len], "core") != 0) { 743 error = EINVAL; 744 goto cleanup; 745 } 746 } 747 if (oldp && oldlenp) { 748 *oldlenp = curlen; 749 error = copyout(ptmp->p_limit->pl_corename, oldp, 750 curlen); 751 } 752 if (newp && error == 0) { 753 /* if the 2 strings are identical, don't limcopy() */ 754 if (strcmp(tmps, ptmp->p_limit->pl_corename) == 0) { 755 error = 0; 756 goto cleanup; 757 } 758 if (ptmp->p_limit->p_refcnt > 1 && 759 (ptmp->p_limit->p_lflags & PL_SHAREMOD) == 0) { 760 newplim = limcopy(ptmp->p_limit); 761 limfree(ptmp->p_limit); 762 ptmp->p_limit = newplim; 763 } else if (ptmp->p_limit->pl_corename != defcorename) { 764 free(ptmp->p_limit->pl_corename, M_TEMP); 765 } 766 ptmp->p_limit->pl_corename = tmps; 767 return (0); 768 } 769 cleanup: 770 if (tmps) 771 free(tmps, M_TEMP); 772 return (error); 773 } 774 if (name[1] == PROC_PID_LIMIT) { 775 if (namelen != 4 || name[2] >= PROC_PID_LIMIT_MAXID) 776 return EINVAL; 777 memcpy(&alim, &ptmp->p_rlimit[name[2] - 1], sizeof(alim)); 778 if (name[3] == PROC_PID_LIMIT_TYPE_HARD) 779 error = sysctl_quad(oldp, oldlenp, newp, newlen, 780 &alim.rlim_max); 781 else if (name[3] == PROC_PID_LIMIT_TYPE_SOFT) 782 error = sysctl_quad(oldp, oldlenp, newp, newlen, 783 &alim.rlim_cur); 784 else 785 error = EINVAL; 786 787 if (error) 788 return error; 789 790 if (newp) 791 error = dosetrlimit(ptmp, p->p_cred, 792 name[2] - 1, &alim); 793 return error; 794 } 795 return (EINVAL); 796 } 797 798 /* 799 * Convenience macros. 800 */ 801 802 #define SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, len) \ 803 if (oldlenp) { \ 804 if (!oldp) \ 805 *oldlenp = len; \ 806 else { \ 807 if (*oldlenp < len) \ 808 return(ENOMEM); \ 809 *oldlenp = len; \ 810 error = copyout((caddr_t)valp, oldp, len); \ 811 } \ 812 } 813 814 #define SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, typ) \ 815 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, sizeof(typ)) 816 817 #define SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) \ 818 if (newp && newlen != len) \ 819 return (EINVAL); 820 821 #define SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, typ) \ 822 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, sizeof(typ)) 823 824 #define SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, len) \ 825 if (error == 0 && newp) \ 826 error = copyin(newp, valp, len); 827 828 #define SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, typ) \ 829 SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, sizeof(typ)) 830 831 #define SYSCTL_STRING_CORE(oldp, oldlenp, str) \ 832 if (oldlenp) { \ 833 len = strlen(str) + 1; \ 834 if (!oldp) \ 835 *oldlenp = len; \ 836 else { \ 837 if (*oldlenp < len) { \ 838 err2 = ENOMEM; \ 839 len = *oldlenp; \ 840 } else \ 841 *oldlenp = len; \ 842 error = copyout(str, oldp, len);\ 843 if (error == 0) \ 844 error = err2; \ 845 } \ 846 } 847 848 /* 849 * Validate parameters and get old / set new parameters 850 * for an integer-valued sysctl function. 851 */ 852 int 853 sysctl_int(oldp, oldlenp, newp, newlen, valp) 854 void *oldp; 855 size_t *oldlenp; 856 void *newp; 857 size_t newlen; 858 int *valp; 859 { 860 int error = 0; 861 862 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 863 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, int) 864 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, int) 865 866 return (error); 867 } 868 869 870 /* 871 * As above, but read-only. 872 */ 873 int 874 sysctl_rdint(oldp, oldlenp, newp, val) 875 void *oldp; 876 size_t *oldlenp; 877 void *newp; 878 int val; 879 { 880 int error = 0; 881 882 if (newp) 883 return (EPERM); 884 885 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, int) 886 887 return (error); 888 } 889 890 /* 891 * Validate parameters and get old / set new parameters 892 * for an quad-valued sysctl function. 893 */ 894 int 895 sysctl_quad(oldp, oldlenp, newp, newlen, valp) 896 void *oldp; 897 size_t *oldlenp; 898 void *newp; 899 size_t newlen; 900 quad_t *valp; 901 { 902 int error = 0; 903 904 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, quad_t) 905 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, quad_t) 906 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, quad_t) 907 908 return (error); 909 } 910 911 /* 912 * As above, but read-only. 913 */ 914 int 915 sysctl_rdquad(oldp, oldlenp, newp, val) 916 void *oldp; 917 size_t *oldlenp; 918 void *newp; 919 quad_t val; 920 { 921 int error = 0; 922 923 if (newp) 924 return (EPERM); 925 926 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, quad_t) 927 928 return (error); 929 } 930 931 /* 932 * Validate parameters and get old / set new parameters 933 * for a string-valued sysctl function. 934 */ 935 int 936 sysctl_string(oldp, oldlenp, newp, newlen, str, maxlen) 937 void *oldp; 938 size_t *oldlenp; 939 void *newp; 940 size_t newlen; 941 char *str; 942 int maxlen; 943 { 944 int len, error = 0, err2 = 0; 945 946 if (newp && newlen >= maxlen) 947 return (EINVAL); 948 949 SYSCTL_STRING_CORE(oldp, oldlenp, str); 950 951 if (error == 0 && newp) { 952 error = copyin(newp, str, newlen); 953 str[newlen] = 0; 954 } 955 return (error); 956 } 957 958 /* 959 * As above, but read-only. 960 */ 961 int 962 sysctl_rdstring(oldp, oldlenp, newp, str) 963 void *oldp; 964 size_t *oldlenp; 965 void *newp; 966 const char *str; 967 { 968 int len, error = 0, err2 = 0; 969 970 if (newp) 971 return (EPERM); 972 973 SYSCTL_STRING_CORE(oldp, oldlenp, str); 974 975 return (error); 976 } 977 978 /* 979 * Validate parameters and get old / set new parameters 980 * for a structure oriented sysctl function. 981 */ 982 int 983 sysctl_struct(oldp, oldlenp, newp, newlen, sp, len) 984 void *oldp; 985 size_t *oldlenp; 986 void *newp; 987 size_t newlen; 988 void *sp; 989 int len; 990 { 991 int error = 0; 992 993 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) 994 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 995 SYSCTL_SCALAR_NEWPCOP_LEN(newp, sp, len) 996 997 return (error); 998 } 999 1000 /* 1001 * Validate parameters and get old parameters 1002 * for a structure oriented sysctl function. 1003 */ 1004 int 1005 sysctl_rdstruct(oldp, oldlenp, newp, sp, len) 1006 void *oldp; 1007 size_t *oldlenp; 1008 void *newp; 1009 const void *sp; 1010 int len; 1011 { 1012 int error = 0; 1013 1014 if (newp) 1015 return (EPERM); 1016 1017 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1018 1019 return (error); 1020 } 1021 1022 /* 1023 * As above, but can return a truncated result. 1024 */ 1025 int 1026 sysctl_rdminstruct(oldp, oldlenp, newp, sp, len) 1027 void *oldp; 1028 size_t *oldlenp; 1029 void *newp; 1030 const void *sp; 1031 int len; 1032 { 1033 int error = 0; 1034 1035 if (newp) 1036 return (EPERM); 1037 1038 len = min(*oldlenp, len); 1039 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1040 1041 return (error); 1042 } 1043 1044 /* 1045 * Get file structures. 1046 */ 1047 static int 1048 sysctl_file(vwhere, sizep) 1049 void *vwhere; 1050 size_t *sizep; 1051 { 1052 int buflen, error; 1053 struct file *fp; 1054 char *start, *where; 1055 1056 start = where = vwhere; 1057 buflen = *sizep; 1058 if (where == NULL) { 1059 /* 1060 * overestimate by 10 files 1061 */ 1062 *sizep = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 1063 return (0); 1064 } 1065 1066 /* 1067 * first copyout filehead 1068 */ 1069 if (buflen < sizeof(filehead)) { 1070 *sizep = 0; 1071 return (0); 1072 } 1073 error = copyout((caddr_t)&filehead, where, sizeof(filehead)); 1074 if (error) 1075 return (error); 1076 buflen -= sizeof(filehead); 1077 where += sizeof(filehead); 1078 1079 /* 1080 * followed by an array of file structures 1081 */ 1082 for (fp = filehead.lh_first; fp != 0; fp = fp->f_list.le_next) { 1083 if (buflen < sizeof(struct file)) { 1084 *sizep = where - start; 1085 return (ENOMEM); 1086 } 1087 error = copyout((caddr_t)fp, where, sizeof(struct file)); 1088 if (error) 1089 return (error); 1090 buflen -= sizeof(struct file); 1091 where += sizeof(struct file); 1092 } 1093 *sizep = where - start; 1094 return (0); 1095 } 1096 1097 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1098 #define FILL_PERM(src, dst) do { \ 1099 (dst)._key = (src)._key; \ 1100 (dst).uid = (src).uid; \ 1101 (dst).gid = (src).gid; \ 1102 (dst).cuid = (src).cuid; \ 1103 (dst).cgid = (src).cgid; \ 1104 (dst).mode = (src).mode; \ 1105 (dst)._seq = (src)._seq; \ 1106 } while (0); 1107 #define FILL_MSG(src, dst) do { \ 1108 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1109 (dst).msg_qnum = (src).msg_qnum; \ 1110 (dst).msg_qbytes = (src).msg_qbytes; \ 1111 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1112 (dst).msg_lspid = (src).msg_lspid; \ 1113 (dst).msg_lrpid = (src).msg_lrpid; \ 1114 (dst).msg_stime = (src).msg_stime; \ 1115 (dst).msg_rtime = (src).msg_rtime; \ 1116 (dst).msg_ctime = (src).msg_ctime; \ 1117 } while (0) 1118 #define FILL_SEM(src, dst) do { \ 1119 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1120 (dst).sem_nsems = (src).sem_nsems; \ 1121 (dst).sem_otime = (src).sem_otime; \ 1122 (dst).sem_ctime = (src).sem_ctime; \ 1123 } while (0) 1124 #define FILL_SHM(src, dst) do { \ 1125 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1126 (dst).shm_segsz = (src).shm_segsz; \ 1127 (dst).shm_lpid = (src).shm_lpid; \ 1128 (dst).shm_cpid = (src).shm_cpid; \ 1129 (dst).shm_atime = (src).shm_atime; \ 1130 (dst).shm_dtime = (src).shm_dtime; \ 1131 (dst).shm_ctime = (src).shm_ctime; \ 1132 (dst).shm_nattch = (src).shm_nattch; \ 1133 } while (0) 1134 1135 static int 1136 sysctl_sysvipc(name, namelen, where, sizep) 1137 int *name; 1138 u_int namelen; 1139 void *where; 1140 size_t *sizep; 1141 { 1142 #ifdef SYSVMSG 1143 struct msg_sysctl_info *msgsi; 1144 #endif 1145 #ifdef SYSVSEM 1146 struct sem_sysctl_info *semsi; 1147 #endif 1148 #ifdef SYSVSHM 1149 struct shm_sysctl_info *shmsi; 1150 #endif 1151 size_t infosize, dssize, tsize, buflen; 1152 void *buf = NULL, *buf2; 1153 char *start; 1154 int32_t nds; 1155 int i, error, ret; 1156 1157 if (namelen != 1) 1158 return (EINVAL); 1159 1160 start = where; 1161 buflen = *sizep; 1162 1163 switch (*name) { 1164 case KERN_SYSVIPC_MSG_INFO: 1165 #ifdef SYSVMSG 1166 infosize = sizeof(msgsi->msginfo); 1167 nds = msginfo.msgmni; 1168 dssize = sizeof(msgsi->msgids[0]); 1169 break; 1170 #else 1171 return (EINVAL); 1172 #endif 1173 case KERN_SYSVIPC_SEM_INFO: 1174 #ifdef SYSVSEM 1175 infosize = sizeof(semsi->seminfo); 1176 nds = seminfo.semmni; 1177 dssize = sizeof(semsi->semids[0]); 1178 break; 1179 #else 1180 return (EINVAL); 1181 #endif 1182 case KERN_SYSVIPC_SHM_INFO: 1183 #ifdef SYSVSHM 1184 infosize = sizeof(shmsi->shminfo); 1185 nds = shminfo.shmmni; 1186 dssize = sizeof(shmsi->shmids[0]); 1187 break; 1188 #else 1189 return (EINVAL); 1190 #endif 1191 default: 1192 return (EINVAL); 1193 } 1194 /* 1195 * Round infosize to 64 bit boundary if requesting more than just 1196 * the info structure or getting the total data size. 1197 */ 1198 if (where == NULL || *sizep > infosize) 1199 infosize = ((infosize + 7) / 8) * 8; 1200 tsize = infosize + nds * dssize; 1201 1202 /* Return just the total size required. */ 1203 if (where == NULL) { 1204 *sizep = tsize; 1205 return (0); 1206 } 1207 1208 /* Not enough room for even the info struct. */ 1209 if (buflen < infosize) { 1210 *sizep = 0; 1211 return (ENOMEM); 1212 } 1213 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1214 memset(buf, 0, min(tsize, buflen)); 1215 1216 switch (*name) { 1217 #ifdef SYSVMSG 1218 case KERN_SYSVIPC_MSG_INFO: 1219 msgsi = (struct msg_sysctl_info *)buf; 1220 buf2 = &msgsi->msgids[0]; 1221 msgsi->msginfo = msginfo; 1222 break; 1223 #endif 1224 #ifdef SYSVSEM 1225 case KERN_SYSVIPC_SEM_INFO: 1226 semsi = (struct sem_sysctl_info *)buf; 1227 buf2 = &semsi->semids[0]; 1228 semsi->seminfo = seminfo; 1229 break; 1230 #endif 1231 #ifdef SYSVSHM 1232 case KERN_SYSVIPC_SHM_INFO: 1233 shmsi = (struct shm_sysctl_info *)buf; 1234 buf2 = &shmsi->shmids[0]; 1235 shmsi->shminfo = shminfo; 1236 break; 1237 #endif 1238 } 1239 buflen -= infosize; 1240 1241 ret = 0; 1242 if (buflen > 0) { 1243 /* Fill in the IPC data structures. */ 1244 for (i = 0; i < nds; i++) { 1245 if (buflen < dssize) { 1246 ret = ENOMEM; 1247 break; 1248 } 1249 switch (*name) { 1250 #ifdef SYSVMSG 1251 case KERN_SYSVIPC_MSG_INFO: 1252 FILL_MSG(msqids[i], msgsi->msgids[i]); 1253 break; 1254 #endif 1255 #ifdef SYSVSEM 1256 case KERN_SYSVIPC_SEM_INFO: 1257 FILL_SEM(sema[i], semsi->semids[i]); 1258 break; 1259 #endif 1260 #ifdef SYSVSHM 1261 case KERN_SYSVIPC_SHM_INFO: 1262 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1263 break; 1264 #endif 1265 } 1266 buflen -= dssize; 1267 } 1268 } 1269 *sizep -= buflen; 1270 error = copyout(buf, start, *sizep); 1271 /* If copyout succeeded, use return code set earlier. */ 1272 if (error == 0) 1273 error = ret; 1274 if (buf) 1275 free(buf, M_TEMP); 1276 return (error); 1277 } 1278 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 1279 1280 static int 1281 sysctl_msgbuf(vwhere, sizep) 1282 void *vwhere; 1283 size_t *sizep; 1284 { 1285 char *where = vwhere; 1286 size_t len, maxlen = *sizep; 1287 long pos; 1288 int error; 1289 1290 /* 1291 * deal with cases where the message buffer has 1292 * become corrupted. 1293 */ 1294 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1295 msgbufenabled = 0; 1296 return (ENXIO); 1297 } 1298 1299 if (where == NULL) { 1300 /* always return full buffer size */ 1301 *sizep = msgbufp->msg_bufs; 1302 return (0); 1303 } 1304 1305 error = 0; 1306 maxlen = min(msgbufp->msg_bufs, maxlen); 1307 pos = msgbufp->msg_bufx; 1308 while (maxlen > 0) { 1309 len = pos == 0 ? msgbufp->msg_bufx : msgbufp->msg_bufs - msgbufp->msg_bufx; 1310 len = min(len, maxlen); 1311 if (len == 0) 1312 break; 1313 error = copyout(&msgbufp->msg_bufc[pos], where, len); 1314 if (error) 1315 break; 1316 where += len; 1317 maxlen -= len; 1318 pos = 0; 1319 } 1320 return (error); 1321 } 1322 1323 /* 1324 * try over estimating by 5 procs 1325 */ 1326 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 1327 1328 static int 1329 sysctl_doeproc(name, namelen, vwhere, sizep) 1330 int *name; 1331 u_int namelen; 1332 void *vwhere; 1333 size_t *sizep; 1334 { 1335 struct eproc eproc; 1336 struct kinfo_proc2 kproc2; 1337 struct kinfo_proc *dp; 1338 struct proc *p; 1339 const struct proclist_desc *pd; 1340 char *where, *dp2; 1341 int type, op, arg, elem_size, elem_count; 1342 int buflen, needed, error; 1343 1344 dp = vwhere; 1345 dp2 = where = vwhere; 1346 buflen = where != NULL ? *sizep : 0; 1347 error = needed = 0; 1348 type = name[0]; 1349 1350 if (type == KERN_PROC) { 1351 if (namelen != 3 && !(namelen == 2 && name[1] == KERN_PROC_ALL)) 1352 return (EINVAL); 1353 op = name[1]; 1354 if (op != KERN_PROC_ALL) 1355 arg = name[2]; 1356 } else { 1357 if (namelen != 5) 1358 return (EINVAL); 1359 op = name[1]; 1360 arg = name[2]; 1361 elem_size = name[3]; 1362 elem_count = name[4]; 1363 } 1364 1365 proclist_lock_read(); 1366 1367 pd = proclists; 1368 again: 1369 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1370 /* 1371 * Skip embryonic processes. 1372 */ 1373 if (p->p_stat == SIDL) 1374 continue; 1375 /* 1376 * TODO - make more efficient (see notes below). 1377 * do by session. 1378 */ 1379 switch (op) { 1380 1381 case KERN_PROC_PID: 1382 /* could do this with just a lookup */ 1383 if (p->p_pid != (pid_t)arg) 1384 continue; 1385 break; 1386 1387 case KERN_PROC_PGRP: 1388 /* could do this by traversing pgrp */ 1389 if (p->p_pgrp->pg_id != (pid_t)arg) 1390 continue; 1391 break; 1392 1393 case KERN_PROC_SESSION: 1394 if (p->p_session->s_sid != (pid_t)arg) 1395 continue; 1396 break; 1397 1398 case KERN_PROC_TTY: 1399 if (arg == KERN_PROC_TTY_REVOKE) { 1400 if ((p->p_flag & P_CONTROLT) == 0 || 1401 p->p_session->s_ttyp == NULL || 1402 p->p_session->s_ttyvp != NULL) 1403 continue; 1404 } else if ((p->p_flag & P_CONTROLT) == 0 || 1405 p->p_session->s_ttyp == NULL) { 1406 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1407 continue; 1408 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1409 continue; 1410 break; 1411 1412 case KERN_PROC_UID: 1413 if (p->p_ucred->cr_uid != (uid_t)arg) 1414 continue; 1415 break; 1416 1417 case KERN_PROC_RUID: 1418 if (p->p_cred->p_ruid != (uid_t)arg) 1419 continue; 1420 break; 1421 1422 case KERN_PROC_GID: 1423 if (p->p_ucred->cr_gid != (uid_t)arg) 1424 continue; 1425 break; 1426 1427 case KERN_PROC_RGID: 1428 if (p->p_cred->p_rgid != (uid_t)arg) 1429 continue; 1430 break; 1431 1432 case KERN_PROC_ALL: 1433 /* allow everything */ 1434 break; 1435 1436 default: 1437 error = EINVAL; 1438 goto cleanup; 1439 } 1440 if (type == KERN_PROC) { 1441 if (buflen >= sizeof(struct kinfo_proc)) { 1442 fill_eproc(p, &eproc); 1443 error = copyout((caddr_t)p, &dp->kp_proc, 1444 sizeof(struct proc)); 1445 if (error) 1446 goto cleanup; 1447 error = copyout((caddr_t)&eproc, &dp->kp_eproc, 1448 sizeof(eproc)); 1449 if (error) 1450 goto cleanup; 1451 dp++; 1452 buflen -= sizeof(struct kinfo_proc); 1453 } 1454 needed += sizeof(struct kinfo_proc); 1455 } else { /* KERN_PROC2 */ 1456 if (buflen >= elem_size && elem_count > 0) { 1457 fill_kproc2(p, &kproc2); 1458 /* 1459 * Copy out elem_size, but not larger than 1460 * the size of a struct kinfo_proc2. 1461 */ 1462 error = copyout(&kproc2, dp2, 1463 min(sizeof(kproc2), elem_size)); 1464 if (error) 1465 goto cleanup; 1466 dp2 += elem_size; 1467 buflen -= elem_size; 1468 elem_count--; 1469 } 1470 needed += elem_size; 1471 } 1472 } 1473 pd++; 1474 if (pd->pd_list != NULL) 1475 goto again; 1476 proclist_unlock_read(); 1477 1478 if (where != NULL) { 1479 if (type == KERN_PROC) 1480 *sizep = (caddr_t)dp - where; 1481 else 1482 *sizep = dp2 - where; 1483 if (needed > *sizep) 1484 return (ENOMEM); 1485 } else { 1486 needed += KERN_PROCSLOP; 1487 *sizep = needed; 1488 } 1489 return (0); 1490 cleanup: 1491 proclist_unlock_read(); 1492 return (error); 1493 } 1494 1495 /* 1496 * Fill in an eproc structure for the specified process. 1497 */ 1498 void 1499 fill_eproc(p, ep) 1500 struct proc *p; 1501 struct eproc *ep; 1502 { 1503 struct tty *tp; 1504 struct lwp *l; 1505 1506 ep->e_paddr = p; 1507 ep->e_sess = p->p_session; 1508 ep->e_pcred = *p->p_cred; 1509 ep->e_ucred = *p->p_ucred; 1510 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1511 ep->e_vm.vm_rssize = 0; 1512 ep->e_vm.vm_tsize = 0; 1513 ep->e_vm.vm_dsize = 0; 1514 ep->e_vm.vm_ssize = 0; 1515 /* ep->e_vm.vm_pmap = XXX; */ 1516 } else { 1517 struct vmspace *vm = p->p_vmspace; 1518 1519 ep->e_vm.vm_rssize = vm_resident_count(vm); 1520 ep->e_vm.vm_tsize = vm->vm_tsize; 1521 ep->e_vm.vm_dsize = vm->vm_dsize; 1522 ep->e_vm.vm_ssize = vm->vm_ssize; 1523 1524 /* Pick a "representative" LWP */ 1525 l = proc_representative_lwp(p); 1526 1527 if (l->l_wmesg) 1528 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 1529 } 1530 if (p->p_pptr) 1531 ep->e_ppid = p->p_pptr->p_pid; 1532 else 1533 ep->e_ppid = 0; 1534 ep->e_pgid = p->p_pgrp->pg_id; 1535 ep->e_sid = ep->e_sess->s_sid; 1536 ep->e_jobc = p->p_pgrp->pg_jobc; 1537 if ((p->p_flag & P_CONTROLT) && 1538 (tp = ep->e_sess->s_ttyp)) { 1539 ep->e_tdev = tp->t_dev; 1540 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1541 ep->e_tsess = tp->t_session; 1542 } else 1543 ep->e_tdev = NODEV; 1544 1545 ep->e_xsize = ep->e_xrssize = 0; 1546 ep->e_xccount = ep->e_xswrss = 0; 1547 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 1548 if (SESS_LEADER(p)) 1549 ep->e_flag |= EPROC_SLEADER; 1550 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 1551 } 1552 1553 /* 1554 * Fill in an eproc structure for the specified process. 1555 */ 1556 static void 1557 fill_kproc2(p, ki) 1558 struct proc *p; 1559 struct kinfo_proc2 *ki; 1560 { 1561 struct tty *tp; 1562 struct lwp *l; 1563 memset(ki, 0, sizeof(*ki)); 1564 1565 /* XXX NJWLWP 1566 * These are likely not what the caller was looking for. 1567 * The perils of playing with the kernel data structures... 1568 */ 1569 ki->p_paddr = PTRTOINT64(p); 1570 ki->p_fd = PTRTOINT64(p->p_fd); 1571 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 1572 ki->p_stats = PTRTOINT64(p->p_stats); 1573 ki->p_limit = PTRTOINT64(p->p_limit); 1574 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 1575 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 1576 ki->p_sess = PTRTOINT64(p->p_session); 1577 ki->p_tsess = 0; /* may be changed if controlling tty below */ 1578 ki->p_ru = PTRTOINT64(p->p_ru); 1579 1580 ki->p_eflag = 0; 1581 ki->p_exitsig = p->p_exitsig; 1582 ki->p_flag = p->p_flag; 1583 1584 ki->p_pid = p->p_pid; 1585 if (p->p_pptr) 1586 ki->p_ppid = p->p_pptr->p_pid; 1587 else 1588 ki->p_ppid = 0; 1589 ki->p_sid = p->p_session->s_sid; 1590 ki->p__pgid = p->p_pgrp->pg_id; 1591 1592 ki->p_tpgid = NO_PID; /* may be changed if controlling tty below */ 1593 1594 ki->p_uid = p->p_ucred->cr_uid; 1595 ki->p_ruid = p->p_cred->p_ruid; 1596 ki->p_gid = p->p_ucred->cr_gid; 1597 ki->p_rgid = p->p_cred->p_rgid; 1598 1599 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 1600 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 1601 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 1602 1603 ki->p_jobc = p->p_pgrp->pg_jobc; 1604 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 1605 ki->p_tdev = tp->t_dev; 1606 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1607 ki->p_tsess = PTRTOINT64(tp->t_session); 1608 } else { 1609 ki->p_tdev = NODEV; 1610 } 1611 1612 ki->p_estcpu = p->p_estcpu; 1613 ki->p_rtime_sec = p->p_rtime.tv_sec; 1614 ki->p_rtime_usec = p->p_rtime.tv_usec; 1615 ki->p_cpticks = p->p_cpticks; 1616 ki->p_pctcpu = p->p_pctcpu; 1617 1618 ki->p_uticks = p->p_uticks; 1619 ki->p_sticks = p->p_sticks; 1620 ki->p_iticks = p->p_iticks; 1621 1622 ki->p_tracep = PTRTOINT64(p->p_tracep); 1623 ki->p_traceflag = p->p_traceflag; 1624 1625 1626 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 1627 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 1628 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 1629 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 1630 1631 ki->p_stat = p->p_stat; 1632 ki->p_nice = p->p_nice; 1633 1634 ki->p_xstat = p->p_xstat; 1635 ki->p_acflag = p->p_acflag; 1636 1637 strncpy(ki->p_comm, p->p_comm, 1638 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 1639 1640 strncpy(ki->p_login, p->p_session->s_login, sizeof(ki->p_login)); 1641 1642 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1643 ki->p_vm_rssize = 0; 1644 ki->p_vm_tsize = 0; 1645 ki->p_vm_dsize = 0; 1646 ki->p_vm_ssize = 0; 1647 } else { 1648 struct vmspace *vm = p->p_vmspace; 1649 1650 ki->p_vm_rssize = vm_resident_count(vm); 1651 ki->p_vm_tsize = vm->vm_tsize; 1652 ki->p_vm_dsize = vm->vm_dsize; 1653 ki->p_vm_ssize = vm->vm_ssize; 1654 1655 /* Pick a "representative" LWP */ 1656 l = proc_representative_lwp(p); 1657 ki->p_forw = PTRTOINT64(l->l_forw); 1658 ki->p_back = PTRTOINT64(l->l_back); 1659 ki->p_addr = PTRTOINT64(l->l_addr); 1660 ki->p_swtime = l->l_swtime; 1661 ki->p_slptime = l->l_slptime; 1662 if (l->l_stat == LSONPROC) { 1663 KDASSERT(l->l_cpu != NULL); 1664 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 1665 } else 1666 ki->p_schedflags = 0; 1667 ki->p_holdcnt = l->l_holdcnt; 1668 ki->p_priority = l->l_priority; 1669 ki->p_usrpri = l->l_usrpri; 1670 if (l->l_wmesg) 1671 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 1672 ki->p_wchan = PTRTOINT64(l->l_wchan); 1673 1674 } 1675 1676 if (p->p_session->s_ttyvp) 1677 ki->p_eflag |= EPROC_CTTY; 1678 if (SESS_LEADER(p)) 1679 ki->p_eflag |= EPROC_SLEADER; 1680 1681 /* XXX Is this double check necessary? */ 1682 if (P_ZOMBIE(p)) { 1683 ki->p_uvalid = 0; 1684 } else { 1685 ki->p_uvalid = 1; 1686 1687 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 1688 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 1689 1690 ki->p_uutime_sec = p->p_stats->p_ru.ru_utime.tv_sec; 1691 ki->p_uutime_usec = p->p_stats->p_ru.ru_utime.tv_usec; 1692 ki->p_ustime_sec = p->p_stats->p_ru.ru_stime.tv_sec; 1693 ki->p_ustime_usec = p->p_stats->p_ru.ru_stime.tv_usec; 1694 1695 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 1696 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 1697 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 1698 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 1699 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 1700 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 1701 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 1702 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 1703 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 1704 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 1705 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 1706 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 1707 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 1708 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 1709 1710 ki->p_uctime_sec = p->p_stats->p_cru.ru_utime.tv_sec + 1711 p->p_stats->p_cru.ru_stime.tv_sec; 1712 ki->p_uctime_usec = p->p_stats->p_cru.ru_utime.tv_usec + 1713 p->p_stats->p_cru.ru_stime.tv_usec; 1714 } 1715 #ifdef MULTIPROCESSOR 1716 if (p->p_cpu != NULL) 1717 ki->p_cpuid = p->p_cpu->ci_cpuid; 1718 else 1719 #endif 1720 ki->p_cpuid = KI_NOCPU; 1721 1722 } 1723 1724 1725 /* 1726 * Pick a LWP to represent the process for those operations which 1727 * want information about a "process" that is actually associated 1728 * with a LWP. 1729 */ 1730 static struct lwp *proc_representative_lwp(p) 1731 struct proc *p; 1732 { 1733 struct lwp *l = NULL; 1734 1735 /* Trivial case: only one LWP */ 1736 if (p->p_nrlwps == 1) 1737 return (LIST_FIRST(&p->p_lwps)); 1738 1739 switch (p->p_stat) { 1740 case SSTOP: 1741 /* Pick the first stopped LWP */ 1742 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 1743 if (l->l_stat == LSSTOP) 1744 return (l); 1745 } 1746 /* NOTREACHED */ 1747 break; 1748 case SACTIVE: 1749 /* Pick the first live LWP */ 1750 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 1751 if (l->l_stat == LSRUN || 1752 l->l_stat == LSSLEEP || 1753 l->l_stat == LSONPROC) 1754 return (l); 1755 } 1756 break; 1757 case SDEAD: 1758 case SZOMB: 1759 /* Doesn't really matter... */ 1760 l = LIST_FIRST(&p->p_lwps); 1761 break; 1762 #ifdef DIAGNOSTIC 1763 case SIDL: 1764 /* We have more than one LWP and we're in SIDL? 1765 * How'd that happen? 1766 */ 1767 panic("Too many LWPs (%d) in SIDL process %d (%s)", 1768 p->p_nrlwps, p->p_pid, p->p_comm); 1769 default: 1770 panic("Process %d (%s) in unknown state %d", 1771 p->p_pid, p->p_comm, p->p_stat); 1772 #endif 1773 } 1774 1775 panic("proc_representative_lwp: couldn't find a lwp for process" 1776 " %d (%s)", p->p_pid, p->p_comm); 1777 /* NOTREACHED */ 1778 return NULL; 1779 } 1780 1781 1782 int 1783 sysctl_procargs(name, namelen, where, sizep, up) 1784 int *name; 1785 u_int namelen; 1786 void *where; 1787 size_t *sizep; 1788 struct proc *up; 1789 { 1790 struct ps_strings pss; 1791 struct proc *p; 1792 size_t len, upper_bound, xlen; 1793 struct uio auio; 1794 struct iovec aiov; 1795 vaddr_t argv; 1796 pid_t pid; 1797 int nargv, type, error, i; 1798 char *arg; 1799 char *tmp; 1800 1801 if (namelen != 2) 1802 return (EINVAL); 1803 pid = name[0]; 1804 type = name[1]; 1805 1806 switch (type) { 1807 case KERN_PROC_ARGV: 1808 case KERN_PROC_NARGV: 1809 case KERN_PROC_ENV: 1810 case KERN_PROC_NENV: 1811 /* ok */ 1812 break; 1813 default: 1814 return (EINVAL); 1815 } 1816 1817 /* check pid */ 1818 if ((p = pfind(pid)) == NULL) 1819 return (EINVAL); 1820 1821 /* only root or same user change look at the environment */ 1822 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1823 if (up->p_ucred->cr_uid != 0) { 1824 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1825 up->p_cred->p_ruid != p->p_cred->p_svuid) 1826 return (EPERM); 1827 } 1828 } 1829 1830 if (sizep != NULL && where == NULL) { 1831 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1832 *sizep = sizeof (int); 1833 else 1834 *sizep = ARG_MAX; /* XXX XXX XXX */ 1835 return (0); 1836 } 1837 if (where == NULL || sizep == NULL) 1838 return (EINVAL); 1839 1840 /* 1841 * Zombies don't have a stack, so we can't read their psstrings. 1842 * System processes also don't have a user stack. 1843 */ 1844 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1845 return (EINVAL); 1846 1847 /* 1848 * Lock the process down in memory. 1849 */ 1850 /* XXXCDC: how should locking work here? */ 1851 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1852 return (EFAULT); 1853 1854 p->p_vmspace->vm_refcnt++; /* XXX */ 1855 1856 /* 1857 * Allocate a temporary buffer to hold the arguments. 1858 */ 1859 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1860 1861 /* 1862 * Read in the ps_strings structure. 1863 */ 1864 aiov.iov_base = &pss; 1865 aiov.iov_len = sizeof(pss); 1866 auio.uio_iov = &aiov; 1867 auio.uio_iovcnt = 1; 1868 auio.uio_offset = (vaddr_t)p->p_psstr; 1869 auio.uio_resid = sizeof(pss); 1870 auio.uio_segflg = UIO_SYSSPACE; 1871 auio.uio_rw = UIO_READ; 1872 auio.uio_procp = NULL; 1873 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1874 if (error) 1875 goto done; 1876 1877 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1878 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1879 else 1880 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1881 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1882 error = copyout(&nargv, where, sizeof(nargv)); 1883 *sizep = sizeof(nargv); 1884 goto done; 1885 } 1886 /* 1887 * Now read the address of the argument vector. 1888 */ 1889 switch (type) { 1890 case KERN_PROC_ARGV: 1891 /* XXX compat32 stuff here */ 1892 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1893 break; 1894 case KERN_PROC_ENV: 1895 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1896 break; 1897 default: 1898 return (EINVAL); 1899 } 1900 auio.uio_offset = (off_t)(long)tmp; 1901 aiov.iov_base = &argv; 1902 aiov.iov_len = sizeof(argv); 1903 auio.uio_iov = &aiov; 1904 auio.uio_iovcnt = 1; 1905 auio.uio_resid = sizeof(argv); 1906 auio.uio_segflg = UIO_SYSSPACE; 1907 auio.uio_rw = UIO_READ; 1908 auio.uio_procp = NULL; 1909 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1910 if (error) 1911 goto done; 1912 1913 /* 1914 * Now copy in the actual argument vector, one page at a time, 1915 * since we don't know how long the vector is (though, we do 1916 * know how many NUL-terminated strings are in the vector). 1917 */ 1918 len = 0; 1919 upper_bound = *sizep; 1920 for (; nargv != 0 && len < upper_bound; len += xlen) { 1921 aiov.iov_base = arg; 1922 aiov.iov_len = PAGE_SIZE; 1923 auio.uio_iov = &aiov; 1924 auio.uio_iovcnt = 1; 1925 auio.uio_offset = argv + len; 1926 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1927 auio.uio_resid = xlen; 1928 auio.uio_segflg = UIO_SYSSPACE; 1929 auio.uio_rw = UIO_READ; 1930 auio.uio_procp = NULL; 1931 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1932 if (error) 1933 goto done; 1934 1935 for (i = 0; i < xlen && nargv != 0; i++) { 1936 if (arg[i] == '\0') 1937 nargv--; /* one full string */ 1938 } 1939 1940 /* make sure we don't copyout past the end of the user's buffer */ 1941 if (len + i > upper_bound) 1942 i = upper_bound - len; 1943 1944 error = copyout(arg, (char *)where + len, i); 1945 if (error) 1946 break; 1947 1948 if (nargv == 0) { 1949 len += i; 1950 break; 1951 } 1952 } 1953 *sizep = len; 1954 1955 done: 1956 uvmspace_free(p->p_vmspace); 1957 1958 free(arg, M_TEMP); 1959 return (error); 1960 } 1961 1962 #if NPTY > 0 1963 int pty_maxptys __P((int, int)); /* defined in kern/tty_pty.c */ 1964 1965 /* 1966 * Validate parameters and get old / set new parameters 1967 * for pty sysctl function. 1968 */ 1969 static int 1970 sysctl_pty(oldp, oldlenp, newp, newlen) 1971 void *oldp; 1972 size_t *oldlenp; 1973 void *newp; 1974 size_t newlen; 1975 { 1976 int error = 0; 1977 int oldmax = 0, newmax = 0; 1978 1979 /* get current value of maxptys */ 1980 oldmax = pty_maxptys(0, 0); 1981 1982 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &oldmax, int) 1983 1984 if (!error && newp) { 1985 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 1986 SYSCTL_SCALAR_NEWPCOP_TYP(newp, &newmax, int) 1987 1988 if (newmax != pty_maxptys(newmax, (newp != NULL))) 1989 return (EINVAL); 1990 1991 } 1992 1993 return (error); 1994 } 1995 #endif /* NPTY > 0 */ 1996
Indexes created Tue Sep 30 07:10:03 GMT 2025