kern_sysctl.c revision 1.86.2.1
1 /* $NetBSD: kern_sysctl.c,v 1.86.2.1 2001/03/05 22:49:43 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 if (uvm_vslock(p, SCARG(uap, old), oldlen, 222 VM_PROT_READ|VM_PROT_WRITE) != KERN_SUCCESS) { 223 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 224 return (EFAULT); 225 } 226 savelen = oldlen; 227 } 228 error = (*fn)(name + 1, SCARG(uap, namelen) - 1, SCARG(uap, old), 229 oldlenp, SCARG(uap, new), SCARG(uap, newlen), p); 230 if (SCARG(uap, old) != NULL) { 231 uvm_vsunlock(p, SCARG(uap, old), savelen); 232 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 233 } 234 if (error) 235 return (error); 236 if (SCARG(uap, oldlenp)) 237 error = copyout(&oldlen, SCARG(uap, oldlenp), sizeof(oldlen)); 238 return (error); 239 } 240 241 /* 242 * Attributes stored in the kernel. 243 */ 244 char hostname[MAXHOSTNAMELEN]; 245 int hostnamelen; 246 247 char domainname[MAXHOSTNAMELEN]; 248 int domainnamelen; 249 250 long hostid; 251 252 #ifdef INSECURE 253 int securelevel = -1; 254 #else 255 int securelevel = 0; 256 #endif 257 258 #ifndef DEFCORENAME 259 #define DEFCORENAME "%n.core" 260 #endif 261 char defcorename[MAXPATHLEN] = DEFCORENAME; 262 int defcorenamelen = sizeof(DEFCORENAME); 263 264 extern int kern_logsigexit; 265 extern fixpt_t ccpu; 266 267 #ifndef MULTIPROCESSOR 268 #define sysctl_ncpus() 1 269 #endif 270 271 #ifdef MULTIPROCESSOR 272 273 #ifndef CPU_INFO_FOREACH 274 #define CPU_INFO_ITERATOR int 275 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 276 #endif 277 278 static int 279 sysctl_docptime(oldp, oldlenp, newp) 280 void *oldp; 281 size_t *oldlenp; 282 void *newp; 283 { 284 u_int64_t cp_time[CPUSTATES]; 285 int i; 286 struct cpu_info *ci; 287 CPU_INFO_ITERATOR cii; 288 289 for (i=0; i<CPUSTATES; i++) 290 cp_time[i] = 0; 291 292 for (CPU_INFO_FOREACH(cii, ci)) { 293 for (i=0; i<CPUSTATES; i++) 294 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 295 } 296 return (sysctl_rdstruct(oldp, oldlenp, newp, 297 cp_time, sizeof(cp_time))); 298 } 299 300 static int 301 sysctl_ncpus(void) 302 { 303 struct cpu_info *ci; 304 CPU_INFO_ITERATOR cii; 305 306 int ncpus = 0; 307 for (CPU_INFO_FOREACH(cii, ci)) 308 ncpus++; 309 return ncpus; 310 } 311 312 #endif 313 314 /* 315 * kernel related system variables. 316 */ 317 int 318 kern_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 319 int *name; 320 u_int namelen; 321 void *oldp; 322 size_t *oldlenp; 323 void *newp; 324 size_t newlen; 325 struct proc *p; 326 { 327 int error, level, inthostid; 328 int old_autonicetime; 329 int old_vnodes; 330 dev_t consdev; 331 332 /* All sysctl names at this level, except for a few, are terminal. */ 333 switch (name[0]) { 334 case KERN_PROC: 335 case KERN_PROC2: 336 case KERN_PROF: 337 case KERN_MBUF: 338 case KERN_PROC_ARGS: 339 case KERN_SYSVIPC_INFO: 340 /* Not terminal. */ 341 break; 342 default: 343 if (namelen != 1) 344 return (ENOTDIR); /* overloaded */ 345 } 346 347 switch (name[0]) { 348 case KERN_OSTYPE: 349 return (sysctl_rdstring(oldp, oldlenp, newp, ostype)); 350 case KERN_OSRELEASE: 351 return (sysctl_rdstring(oldp, oldlenp, newp, osrelease)); 352 case KERN_OSREV: 353 return (sysctl_rdint(oldp, oldlenp, newp, __NetBSD_Version__)); 354 case KERN_VERSION: 355 return (sysctl_rdstring(oldp, oldlenp, newp, version)); 356 case KERN_MAXVNODES: 357 old_vnodes = desiredvnodes; 358 error = sysctl_int(oldp, oldlenp, newp, newlen, &desiredvnodes); 359 if (old_vnodes > desiredvnodes) { 360 desiredvnodes = old_vnodes; 361 return (EINVAL); 362 } 363 return (error); 364 case KERN_MAXPROC: 365 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxproc)); 366 case KERN_MAXFILES: 367 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxfiles)); 368 case KERN_ARGMAX: 369 return (sysctl_rdint(oldp, oldlenp, newp, ARG_MAX)); 370 case KERN_SECURELVL: 371 level = securelevel; 372 if ((error = sysctl_int(oldp, oldlenp, newp, newlen, &level)) || 373 newp == NULL) 374 return (error); 375 if (level < securelevel && p->p_pid != 1) 376 return (EPERM); 377 securelevel = level; 378 return (0); 379 case KERN_HOSTNAME: 380 error = sysctl_string(oldp, oldlenp, newp, newlen, 381 hostname, sizeof(hostname)); 382 if (newp && !error) 383 hostnamelen = newlen; 384 return (error); 385 case KERN_DOMAINNAME: 386 error = sysctl_string(oldp, oldlenp, newp, newlen, 387 domainname, sizeof(domainname)); 388 if (newp && !error) 389 domainnamelen = newlen; 390 return (error); 391 case KERN_HOSTID: 392 inthostid = hostid; /* XXX assumes sizeof long <= sizeof int */ 393 error = sysctl_int(oldp, oldlenp, newp, newlen, &inthostid); 394 hostid = inthostid; 395 return (error); 396 case KERN_CLOCKRATE: 397 return (sysctl_clockrate(oldp, oldlenp)); 398 case KERN_BOOTTIME: 399 return (sysctl_rdstruct(oldp, oldlenp, newp, &boottime, 400 sizeof(struct timeval))); 401 case KERN_VNODE: 402 return (sysctl_vnode(oldp, oldlenp, p)); 403 case KERN_PROC: 404 case KERN_PROC2: 405 return (sysctl_doeproc(name, namelen, oldp, oldlenp)); 406 case KERN_PROC_ARGS: 407 return (sysctl_procargs(name + 1, namelen - 1, 408 oldp, oldlenp, p)); 409 case KERN_FILE: 410 return (sysctl_file(oldp, oldlenp)); 411 #ifdef GPROF 412 case KERN_PROF: 413 return (sysctl_doprof(name + 1, namelen - 1, oldp, oldlenp, 414 newp, newlen)); 415 #endif 416 case KERN_POSIX1: 417 return (sysctl_rdint(oldp, oldlenp, newp, _POSIX_VERSION)); 418 case KERN_NGROUPS: 419 return (sysctl_rdint(oldp, oldlenp, newp, NGROUPS_MAX)); 420 case KERN_JOB_CONTROL: 421 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 422 case KERN_SAVED_IDS: 423 #ifdef _POSIX_SAVED_IDS 424 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 425 #else 426 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 427 #endif 428 case KERN_MAXPARTITIONS: 429 return (sysctl_rdint(oldp, oldlenp, newp, MAXPARTITIONS)); 430 case KERN_RAWPARTITION: 431 return (sysctl_rdint(oldp, oldlenp, newp, RAW_PART)); 432 #ifdef NTP 433 case KERN_NTPTIME: 434 return (sysctl_ntptime(oldp, oldlenp)); 435 #endif 436 case KERN_AUTONICETIME: 437 old_autonicetime = autonicetime; 438 error = sysctl_int(oldp, oldlenp, newp, newlen, &autonicetime); 439 if (autonicetime < 0) 440 autonicetime = old_autonicetime; 441 return (error); 442 case KERN_AUTONICEVAL: 443 error = sysctl_int(oldp, oldlenp, newp, newlen, &autoniceval); 444 if (autoniceval < PRIO_MIN) 445 autoniceval = PRIO_MIN; 446 if (autoniceval > PRIO_MAX) 447 autoniceval = PRIO_MAX; 448 return (error); 449 case KERN_RTC_OFFSET: 450 return (sysctl_rdint(oldp, oldlenp, newp, rtc_offset)); 451 case KERN_ROOT_DEVICE: 452 return (sysctl_rdstring(oldp, oldlenp, newp, 453 root_device->dv_xname)); 454 case KERN_MSGBUFSIZE: 455 /* 456 * deal with cases where the message buffer has 457 * become corrupted. 458 */ 459 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 460 msgbufenabled = 0; 461 return (ENXIO); 462 } 463 return (sysctl_rdint(oldp, oldlenp, newp, msgbufp->msg_bufs)); 464 case KERN_FSYNC: 465 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 466 case KERN_SYSVMSG: 467 #ifdef SYSVMSG 468 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 469 #else 470 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 471 #endif 472 case KERN_SYSVSEM: 473 #ifdef SYSVSEM 474 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 475 #else 476 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 477 #endif 478 case KERN_SYSVSHM: 479 #ifdef SYSVSHM 480 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 481 #else 482 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 483 #endif 484 case KERN_DEFCORENAME: 485 if (newp && newlen < 1) 486 return (EINVAL); 487 error = sysctl_string(oldp, oldlenp, newp, newlen, 488 defcorename, sizeof(defcorename)); 489 if (newp && !error) 490 defcorenamelen = newlen; 491 return (error); 492 case KERN_SYNCHRONIZED_IO: 493 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 494 case KERN_IOV_MAX: 495 return (sysctl_rdint(oldp, oldlenp, newp, IOV_MAX)); 496 case KERN_MBUF: 497 return (sysctl_dombuf(name + 1, namelen - 1, oldp, oldlenp, 498 newp, newlen)); 499 case KERN_MAPPED_FILES: 500 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 501 case KERN_MEMLOCK: 502 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 503 case KERN_MEMLOCK_RANGE: 504 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 505 case KERN_MEMORY_PROTECTION: 506 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 507 case KERN_LOGIN_NAME_MAX: 508 return (sysctl_rdint(oldp, oldlenp, newp, LOGIN_NAME_MAX)); 509 case KERN_LOGSIGEXIT: 510 return (sysctl_int(oldp, oldlenp, newp, newlen, 511 &kern_logsigexit)); 512 case KERN_FSCALE: 513 return (sysctl_rdint(oldp, oldlenp, newp, FSCALE)); 514 case KERN_CCPU: 515 return (sysctl_rdint(oldp, oldlenp, newp, ccpu)); 516 case KERN_CP_TIME: 517 #ifndef MULTIPROCESSOR 518 return (sysctl_rdstruct(oldp, oldlenp, newp, 519 curcpu()->ci_schedstate.spc_cp_time, 520 sizeof(curcpu()->ci_schedstate.spc_cp_time))); 521 #else 522 return (sysctl_docptime(oldp, oldlenp, newp)); 523 #endif 524 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 525 case KERN_SYSVIPC_INFO: 526 return (sysctl_sysvipc(name + 1, namelen - 1, oldp, oldlenp)); 527 #endif 528 case KERN_MSGBUF: 529 return (sysctl_msgbuf(oldp, oldlenp)); 530 case KERN_CONSDEV: 531 if (cn_tab != NULL) 532 consdev = cn_tab->cn_dev; 533 else 534 consdev = NODEV; 535 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 536 sizeof consdev)); 537 #if NPTY > 0 538 case KERN_MAXPTYS: 539 return sysctl_pty(oldp, oldlenp, newp, newlen); 540 #endif 541 default: 542 return (EOPNOTSUPP); 543 } 544 /* NOTREACHED */ 545 } 546 547 /* 548 * hardware related system variables. 549 */ 550 int 551 hw_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 552 int *name; 553 u_int namelen; 554 void *oldp; 555 size_t *oldlenp; 556 void *newp; 557 size_t newlen; 558 struct proc *p; 559 { 560 561 /* all sysctl names at this level are terminal */ 562 if (namelen != 1) 563 return (ENOTDIR); /* overloaded */ 564 565 switch (name[0]) { 566 case HW_MACHINE: 567 return (sysctl_rdstring(oldp, oldlenp, newp, machine)); 568 case HW_MACHINE_ARCH: 569 return (sysctl_rdstring(oldp, oldlenp, newp, machine_arch)); 570 case HW_MODEL: 571 return (sysctl_rdstring(oldp, oldlenp, newp, cpu_model)); 572 case HW_NCPU: 573 return (sysctl_rdint(oldp, oldlenp, newp, sysctl_ncpus())); 574 case HW_BYTEORDER: 575 return (sysctl_rdint(oldp, oldlenp, newp, BYTE_ORDER)); 576 case HW_PHYSMEM: 577 return (sysctl_rdint(oldp, oldlenp, newp, ctob(physmem))); 578 case HW_USERMEM: 579 return (sysctl_rdint(oldp, oldlenp, newp, 580 ctob(physmem - uvmexp.wired))); 581 case HW_PAGESIZE: 582 return (sysctl_rdint(oldp, oldlenp, newp, PAGE_SIZE)); 583 case HW_ALIGNBYTES: 584 return (sysctl_rdint(oldp, oldlenp, newp, ALIGNBYTES)); 585 case HW_CNMAGIC: { 586 char magic[CNS_LEN]; 587 int error; 588 589 if (oldp) 590 cn_get_magic(magic, CNS_LEN); 591 error = sysctl_string(oldp, oldlenp, newp, newlen, 592 magic, sizeof(magic)); 593 if (newp && !error) { 594 error = cn_set_magic(magic); 595 } 596 return (error); 597 } 598 default: 599 return (EOPNOTSUPP); 600 } 601 /* NOTREACHED */ 602 } 603 604 #ifdef DEBUG 605 /* 606 * Debugging related system variables. 607 */ 608 struct ctldebug debug0, debug1, debug2, debug3, debug4; 609 struct ctldebug debug5, debug6, debug7, debug8, debug9; 610 struct ctldebug debug10, debug11, debug12, debug13, debug14; 611 struct ctldebug debug15, debug16, debug17, debug18, debug19; 612 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 613 &debug0, &debug1, &debug2, &debug3, &debug4, 614 &debug5, &debug6, &debug7, &debug8, &debug9, 615 &debug10, &debug11, &debug12, &debug13, &debug14, 616 &debug15, &debug16, &debug17, &debug18, &debug19, 617 }; 618 int 619 debug_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 620 int *name; 621 u_int namelen; 622 void *oldp; 623 size_t *oldlenp; 624 void *newp; 625 size_t newlen; 626 struct proc *p; 627 { 628 struct ctldebug *cdp; 629 630 /* all sysctl names at this level are name and field */ 631 if (namelen != 2) 632 return (ENOTDIR); /* overloaded */ 633 cdp = debugvars[name[0]]; 634 if (name[0] >= CTL_DEBUG_MAXID || cdp->debugname == 0) 635 return (EOPNOTSUPP); 636 switch (name[1]) { 637 case CTL_DEBUG_NAME: 638 return (sysctl_rdstring(oldp, oldlenp, newp, cdp->debugname)); 639 case CTL_DEBUG_VALUE: 640 return (sysctl_int(oldp, oldlenp, newp, newlen, cdp->debugvar)); 641 default: 642 return (EOPNOTSUPP); 643 } 644 /* NOTREACHED */ 645 } 646 #endif /* DEBUG */ 647 648 int 649 proc_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) 650 int *name; 651 u_int namelen; 652 void *oldp; 653 size_t *oldlenp; 654 void *newp; 655 size_t newlen; 656 struct proc *p; 657 { 658 struct proc *ptmp = NULL; 659 const struct proclist_desc *pd; 660 int error = 0; 661 struct rlimit alim; 662 struct plimit *newplim; 663 char *tmps = NULL; 664 int i, curlen, len; 665 666 if (namelen < 2) 667 return EINVAL; 668 669 if (name[0] == PROC_CURPROC) { 670 ptmp = p; 671 } else { 672 proclist_lock_read(); 673 for (pd = proclists; pd->pd_list != NULL; pd++) { 674 for (ptmp = LIST_FIRST(pd->pd_list); ptmp != NULL; 675 ptmp = LIST_NEXT(ptmp, p_list)) { 676 /* Skip embryonic processes. */ 677 if (ptmp->p_stat == SIDL) 678 continue; 679 if (ptmp->p_pid == (pid_t)name[0]) 680 break; 681 } 682 if (ptmp != NULL) 683 break; 684 } 685 proclist_unlock_read(); 686 if (ptmp == NULL) 687 return(ESRCH); 688 if (p->p_ucred->cr_uid != 0) { 689 if(p->p_cred->p_ruid != ptmp->p_cred->p_ruid || 690 p->p_cred->p_ruid != ptmp->p_cred->p_svuid) 691 return EPERM; 692 if (ptmp->p_cred->p_rgid != ptmp->p_cred->p_svgid) 693 return EPERM; /* sgid proc */ 694 for (i = 0; i < p->p_ucred->cr_ngroups; i++) { 695 if (p->p_ucred->cr_groups[i] == 696 ptmp->p_cred->p_rgid) 697 break; 698 } 699 if (i == p->p_ucred->cr_ngroups) 700 return EPERM; 701 } 702 } 703 if (name[1] == PROC_PID_CORENAME) { 704 if (namelen != 2) 705 return EINVAL; 706 /* 707 * Can't use sysctl_string() here because we may malloc a new 708 * area during the process, so we have to do it by hand. 709 */ 710 curlen = strlen(ptmp->p_limit->pl_corename) + 1; 711 if (oldlenp && *oldlenp < curlen) { 712 if (!oldp) 713 *oldlenp = curlen; 714 return (ENOMEM); 715 } 716 if (newp) { 717 if (securelevel > 2) 718 return EPERM; 719 if (newlen > MAXPATHLEN) 720 return ENAMETOOLONG; 721 tmps = malloc(newlen + 1, M_TEMP, M_WAITOK); 722 if (tmps == NULL) 723 return ENOMEM; 724 error = copyin(newp, tmps, newlen + 1); 725 tmps[newlen] = '\0'; 726 if (error) 727 goto cleanup; 728 /* Enforce to be either 'core' for end with '.core' */ 729 if (newlen < 4) { /* c.o.r.e */ 730 error = EINVAL; 731 goto cleanup; 732 } 733 len = newlen - 4; 734 if (len > 0) { 735 if (tmps[len - 1] != '.' && 736 tmps[len - 1] != '/') { 737 error = EINVAL; 738 goto cleanup; 739 } 740 } 741 if (strcmp(&tmps[len], "core") != 0) { 742 error = EINVAL; 743 goto cleanup; 744 } 745 } 746 if (oldp && oldlenp) { 747 *oldlenp = curlen; 748 error = copyout(ptmp->p_limit->pl_corename, oldp, 749 curlen); 750 } 751 if (newp && error == 0) { 752 /* if the 2 strings are identical, don't limcopy() */ 753 if (strcmp(tmps, ptmp->p_limit->pl_corename) == 0) { 754 error = 0; 755 goto cleanup; 756 } 757 if (ptmp->p_limit->p_refcnt > 1 && 758 (ptmp->p_limit->p_lflags & PL_SHAREMOD) == 0) { 759 newplim = limcopy(ptmp->p_limit); 760 limfree(ptmp->p_limit); 761 ptmp->p_limit = newplim; 762 } else if (ptmp->p_limit->pl_corename != defcorename) { 763 free(ptmp->p_limit->pl_corename, M_TEMP); 764 } 765 ptmp->p_limit->pl_corename = tmps; 766 return (0); 767 } 768 cleanup: 769 if (tmps) 770 free(tmps, M_TEMP); 771 return (error); 772 } 773 if (name[1] == PROC_PID_LIMIT) { 774 if (namelen != 4 || name[2] >= PROC_PID_LIMIT_MAXID) 775 return EINVAL; 776 memcpy(&alim, &ptmp->p_rlimit[name[2] - 1], sizeof(alim)); 777 if (name[3] == PROC_PID_LIMIT_TYPE_HARD) 778 error = sysctl_quad(oldp, oldlenp, newp, newlen, 779 &alim.rlim_max); 780 else if (name[3] == PROC_PID_LIMIT_TYPE_SOFT) 781 error = sysctl_quad(oldp, oldlenp, newp, newlen, 782 &alim.rlim_cur); 783 else 784 error = EINVAL; 785 786 if (error) 787 return error; 788 789 if (newp) 790 error = dosetrlimit(ptmp, p->p_cred, 791 name[2] - 1, &alim); 792 return error; 793 } 794 return (EINVAL); 795 } 796 797 /* 798 * Convenience macros. 799 */ 800 801 #define SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, len) \ 802 if (oldlenp) { \ 803 if (!oldp) \ 804 *oldlenp = len; \ 805 else { \ 806 if (*oldlenp < len) \ 807 return(ENOMEM); \ 808 *oldlenp = len; \ 809 error = copyout((caddr_t)valp, oldp, len); \ 810 } \ 811 } 812 813 #define SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, typ) \ 814 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, sizeof(typ)) 815 816 #define SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) \ 817 if (newp && newlen != len) \ 818 return (EINVAL); 819 820 #define SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, typ) \ 821 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, sizeof(typ)) 822 823 #define SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, len) \ 824 if (error == 0 && newp) \ 825 error = copyin(newp, valp, len); 826 827 #define SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, typ) \ 828 SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, sizeof(typ)) 829 830 #define SYSCTL_STRING_CORE(oldp, oldlenp, str) \ 831 if (oldlenp) { \ 832 len = strlen(str) + 1; \ 833 if (!oldp) \ 834 *oldlenp = len; \ 835 else { \ 836 if (*oldlenp < len) { \ 837 err2 = ENOMEM; \ 838 len = *oldlenp; \ 839 } else \ 840 *oldlenp = len; \ 841 error = copyout(str, oldp, len);\ 842 if (error == 0) \ 843 error = err2; \ 844 } \ 845 } 846 847 /* 848 * Validate parameters and get old / set new parameters 849 * for an integer-valued sysctl function. 850 */ 851 int 852 sysctl_int(oldp, oldlenp, newp, newlen, valp) 853 void *oldp; 854 size_t *oldlenp; 855 void *newp; 856 size_t newlen; 857 int *valp; 858 { 859 int error = 0; 860 861 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 862 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, int) 863 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, int) 864 865 return (error); 866 } 867 868 869 /* 870 * As above, but read-only. 871 */ 872 int 873 sysctl_rdint(oldp, oldlenp, newp, val) 874 void *oldp; 875 size_t *oldlenp; 876 void *newp; 877 int val; 878 { 879 int error = 0; 880 881 if (newp) 882 return (EPERM); 883 884 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, int) 885 886 return (error); 887 } 888 889 /* 890 * Validate parameters and get old / set new parameters 891 * for an quad-valued sysctl function. 892 */ 893 int 894 sysctl_quad(oldp, oldlenp, newp, newlen, valp) 895 void *oldp; 896 size_t *oldlenp; 897 void *newp; 898 size_t newlen; 899 quad_t *valp; 900 { 901 int error = 0; 902 903 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, quad_t) 904 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, quad_t) 905 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, quad_t) 906 907 return (error); 908 } 909 910 /* 911 * As above, but read-only. 912 */ 913 int 914 sysctl_rdquad(oldp, oldlenp, newp, val) 915 void *oldp; 916 size_t *oldlenp; 917 void *newp; 918 quad_t val; 919 { 920 int error = 0; 921 922 if (newp) 923 return (EPERM); 924 925 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, quad_t) 926 927 return (error); 928 } 929 930 /* 931 * Validate parameters and get old / set new parameters 932 * for a string-valued sysctl function. 933 */ 934 int 935 sysctl_string(oldp, oldlenp, newp, newlen, str, maxlen) 936 void *oldp; 937 size_t *oldlenp; 938 void *newp; 939 size_t newlen; 940 char *str; 941 int maxlen; 942 { 943 int len, error = 0, err2 = 0; 944 945 if (newp && newlen >= maxlen) 946 return (EINVAL); 947 948 SYSCTL_STRING_CORE(oldp, oldlenp, str); 949 950 if (error == 0 && newp) { 951 error = copyin(newp, str, newlen); 952 str[newlen] = 0; 953 } 954 return (error); 955 } 956 957 /* 958 * As above, but read-only. 959 */ 960 int 961 sysctl_rdstring(oldp, oldlenp, newp, str) 962 void *oldp; 963 size_t *oldlenp; 964 void *newp; 965 const char *str; 966 { 967 int len, error = 0, err2 = 0; 968 969 if (newp) 970 return (EPERM); 971 972 SYSCTL_STRING_CORE(oldp, oldlenp, str); 973 974 return (error); 975 } 976 977 /* 978 * Validate parameters and get old / set new parameters 979 * for a structure oriented sysctl function. 980 */ 981 int 982 sysctl_struct(oldp, oldlenp, newp, newlen, sp, len) 983 void *oldp; 984 size_t *oldlenp; 985 void *newp; 986 size_t newlen; 987 void *sp; 988 int len; 989 { 990 int error = 0; 991 992 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) 993 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 994 SYSCTL_SCALAR_NEWPCOP_LEN(newp, sp, len) 995 996 return (error); 997 } 998 999 /* 1000 * Validate parameters and get old parameters 1001 * for a structure oriented sysctl function. 1002 */ 1003 int 1004 sysctl_rdstruct(oldp, oldlenp, newp, sp, len) 1005 void *oldp; 1006 size_t *oldlenp; 1007 void *newp; 1008 const void *sp; 1009 int len; 1010 { 1011 int error = 0; 1012 1013 if (newp) 1014 return (EPERM); 1015 1016 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1017 1018 return (error); 1019 } 1020 1021 /* 1022 * As above, but can return a truncated result. 1023 */ 1024 int 1025 sysctl_rdminstruct(oldp, oldlenp, newp, sp, len) 1026 void *oldp; 1027 size_t *oldlenp; 1028 void *newp; 1029 const void *sp; 1030 int len; 1031 { 1032 int error = 0; 1033 1034 if (newp) 1035 return (EPERM); 1036 1037 len = min(*oldlenp, len); 1038 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1039 1040 return (error); 1041 } 1042 1043 /* 1044 * Get file structures. 1045 */ 1046 static int 1047 sysctl_file(vwhere, sizep) 1048 void *vwhere; 1049 size_t *sizep; 1050 { 1051 int buflen, error; 1052 struct file *fp; 1053 char *start, *where; 1054 1055 start = where = vwhere; 1056 buflen = *sizep; 1057 if (where == NULL) { 1058 /* 1059 * overestimate by 10 files 1060 */ 1061 *sizep = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 1062 return (0); 1063 } 1064 1065 /* 1066 * first copyout filehead 1067 */ 1068 if (buflen < sizeof(filehead)) { 1069 *sizep = 0; 1070 return (0); 1071 } 1072 error = copyout((caddr_t)&filehead, where, sizeof(filehead)); 1073 if (error) 1074 return (error); 1075 buflen -= sizeof(filehead); 1076 where += sizeof(filehead); 1077 1078 /* 1079 * followed by an array of file structures 1080 */ 1081 for (fp = filehead.lh_first; fp != 0; fp = fp->f_list.le_next) { 1082 if (buflen < sizeof(struct file)) { 1083 *sizep = where - start; 1084 return (ENOMEM); 1085 } 1086 error = copyout((caddr_t)fp, where, sizeof(struct file)); 1087 if (error) 1088 return (error); 1089 buflen -= sizeof(struct file); 1090 where += sizeof(struct file); 1091 } 1092 *sizep = where - start; 1093 return (0); 1094 } 1095 1096 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1097 #define FILL_PERM(src, dst) do { \ 1098 (dst)._key = (src)._key; \ 1099 (dst).uid = (src).uid; \ 1100 (dst).gid = (src).gid; \ 1101 (dst).cuid = (src).cuid; \ 1102 (dst).cgid = (src).cgid; \ 1103 (dst).mode = (src).mode; \ 1104 (dst)._seq = (src)._seq; \ 1105 } while (0); 1106 #define FILL_MSG(src, dst) do { \ 1107 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1108 (dst).msg_qnum = (src).msg_qnum; \ 1109 (dst).msg_qbytes = (src).msg_qbytes; \ 1110 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1111 (dst).msg_lspid = (src).msg_lspid; \ 1112 (dst).msg_lrpid = (src).msg_lrpid; \ 1113 (dst).msg_stime = (src).msg_stime; \ 1114 (dst).msg_rtime = (src).msg_rtime; \ 1115 (dst).msg_ctime = (src).msg_ctime; \ 1116 } while (0) 1117 #define FILL_SEM(src, dst) do { \ 1118 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1119 (dst).sem_nsems = (src).sem_nsems; \ 1120 (dst).sem_otime = (src).sem_otime; \ 1121 (dst).sem_ctime = (src).sem_ctime; \ 1122 } while (0) 1123 #define FILL_SHM(src, dst) do { \ 1124 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1125 (dst).shm_segsz = (src).shm_segsz; \ 1126 (dst).shm_lpid = (src).shm_lpid; \ 1127 (dst).shm_cpid = (src).shm_cpid; \ 1128 (dst).shm_atime = (src).shm_atime; \ 1129 (dst).shm_dtime = (src).shm_dtime; \ 1130 (dst).shm_ctime = (src).shm_ctime; \ 1131 (dst).shm_nattch = (src).shm_nattch; \ 1132 } while (0) 1133 1134 static int 1135 sysctl_sysvipc(name, namelen, where, sizep) 1136 int *name; 1137 u_int namelen; 1138 void *where; 1139 size_t *sizep; 1140 { 1141 #ifdef SYSVMSG 1142 struct msg_sysctl_info *msgsi; 1143 #endif 1144 #ifdef SYSVSEM 1145 struct sem_sysctl_info *semsi; 1146 #endif 1147 #ifdef SYSVSHM 1148 struct shm_sysctl_info *shmsi; 1149 #endif 1150 size_t infosize, dssize, tsize, buflen; 1151 void *buf = NULL, *buf2; 1152 char *start; 1153 int32_t nds; 1154 int i, error, ret; 1155 1156 if (namelen != 1) 1157 return (EINVAL); 1158 1159 start = where; 1160 buflen = *sizep; 1161 1162 switch (*name) { 1163 case KERN_SYSVIPC_MSG_INFO: 1164 #ifdef SYSVMSG 1165 infosize = sizeof(msgsi->msginfo); 1166 nds = msginfo.msgmni; 1167 dssize = sizeof(msgsi->msgids[0]); 1168 break; 1169 #else 1170 return (EINVAL); 1171 #endif 1172 case KERN_SYSVIPC_SEM_INFO: 1173 #ifdef SYSVSEM 1174 infosize = sizeof(semsi->seminfo); 1175 nds = seminfo.semmni; 1176 dssize = sizeof(semsi->semids[0]); 1177 break; 1178 #else 1179 return (EINVAL); 1180 #endif 1181 case KERN_SYSVIPC_SHM_INFO: 1182 #ifdef SYSVSHM 1183 infosize = sizeof(shmsi->shminfo); 1184 nds = shminfo.shmmni; 1185 dssize = sizeof(shmsi->shmids[0]); 1186 break; 1187 #else 1188 return (EINVAL); 1189 #endif 1190 default: 1191 return (EINVAL); 1192 } 1193 /* 1194 * Round infosize to 64 bit boundary if requesting more than just 1195 * the info structure or getting the total data size. 1196 */ 1197 if (where == NULL || *sizep > infosize) 1198 infosize = ((infosize + 7) / 8) * 8; 1199 tsize = infosize + nds * dssize; 1200 1201 /* Return just the total size required. */ 1202 if (where == NULL) { 1203 *sizep = tsize; 1204 return (0); 1205 } 1206 1207 /* Not enough room for even the info struct. */ 1208 if (buflen < infosize) { 1209 *sizep = 0; 1210 return (ENOMEM); 1211 } 1212 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1213 memset(buf, 0, min(tsize, buflen)); 1214 1215 switch (*name) { 1216 #ifdef SYSVMSG 1217 case KERN_SYSVIPC_MSG_INFO: 1218 msgsi = (struct msg_sysctl_info *)buf; 1219 buf2 = &msgsi->msgids[0]; 1220 msgsi->msginfo = msginfo; 1221 break; 1222 #endif 1223 #ifdef SYSVSEM 1224 case KERN_SYSVIPC_SEM_INFO: 1225 semsi = (struct sem_sysctl_info *)buf; 1226 buf2 = &semsi->semids[0]; 1227 semsi->seminfo = seminfo; 1228 break; 1229 #endif 1230 #ifdef SYSVSHM 1231 case KERN_SYSVIPC_SHM_INFO: 1232 shmsi = (struct shm_sysctl_info *)buf; 1233 buf2 = &shmsi->shmids[0]; 1234 shmsi->shminfo = shminfo; 1235 break; 1236 #endif 1237 } 1238 buflen -= infosize; 1239 1240 ret = 0; 1241 if (buflen > 0) { 1242 /* Fill in the IPC data structures. */ 1243 for (i = 0; i < nds; i++) { 1244 if (buflen < dssize) { 1245 ret = ENOMEM; 1246 break; 1247 } 1248 switch (*name) { 1249 #ifdef SYSVMSG 1250 case KERN_SYSVIPC_MSG_INFO: 1251 FILL_MSG(msqids[i], msgsi->msgids[i]); 1252 break; 1253 #endif 1254 #ifdef SYSVSEM 1255 case KERN_SYSVIPC_SEM_INFO: 1256 FILL_SEM(sema[i], semsi->semids[i]); 1257 break; 1258 #endif 1259 #ifdef SYSVSHM 1260 case KERN_SYSVIPC_SHM_INFO: 1261 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1262 break; 1263 #endif 1264 } 1265 buflen -= dssize; 1266 } 1267 } 1268 *sizep -= buflen; 1269 error = copyout(buf, start, *sizep); 1270 /* If copyout succeeded, use return code set earlier. */ 1271 if (error == 0) 1272 error = ret; 1273 if (buf) 1274 free(buf, M_TEMP); 1275 return (error); 1276 } 1277 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 1278 1279 static int 1280 sysctl_msgbuf(vwhere, sizep) 1281 void *vwhere; 1282 size_t *sizep; 1283 { 1284 char *where = vwhere; 1285 size_t len, maxlen = *sizep; 1286 long pos; 1287 int error; 1288 1289 /* 1290 * deal with cases where the message buffer has 1291 * become corrupted. 1292 */ 1293 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1294 msgbufenabled = 0; 1295 return (ENXIO); 1296 } 1297 1298 if (where == NULL) { 1299 /* always return full buffer size */ 1300 *sizep = msgbufp->msg_bufs; 1301 return (0); 1302 } 1303 1304 error = 0; 1305 maxlen = min(msgbufp->msg_bufs, maxlen); 1306 pos = msgbufp->msg_bufx; 1307 while (maxlen > 0) { 1308 len = pos == 0 ? msgbufp->msg_bufx : msgbufp->msg_bufs - msgbufp->msg_bufx; 1309 len = min(len, maxlen); 1310 if (len == 0) 1311 break; 1312 error = copyout(&msgbufp->msg_bufc[pos], where, len); 1313 if (error) 1314 break; 1315 where += len; 1316 maxlen -= len; 1317 pos = 0; 1318 } 1319 return (error); 1320 } 1321 1322 /* 1323 * try over estimating by 5 procs 1324 */ 1325 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 1326 1327 static int 1328 sysctl_doeproc(name, namelen, vwhere, sizep) 1329 int *name; 1330 u_int namelen; 1331 void *vwhere; 1332 size_t *sizep; 1333 { 1334 struct eproc eproc; 1335 struct kinfo_proc2 kproc2; 1336 struct kinfo_proc *dp; 1337 struct proc *p; 1338 const struct proclist_desc *pd; 1339 char *where, *dp2; 1340 int type, op, arg, elem_size, elem_count; 1341 int buflen, needed, error; 1342 1343 dp = vwhere; 1344 dp2 = where = vwhere; 1345 buflen = where != NULL ? *sizep : 0; 1346 error = needed = 0; 1347 type = name[0]; 1348 1349 if (type == KERN_PROC) { 1350 if (namelen != 3 && !(namelen == 2 && name[1] == KERN_PROC_ALL)) 1351 return (EINVAL); 1352 op = name[1]; 1353 if (op != KERN_PROC_ALL) 1354 arg = name[2]; 1355 } else { 1356 if (namelen != 5) 1357 return (EINVAL); 1358 op = name[1]; 1359 arg = name[2]; 1360 elem_size = name[3]; 1361 elem_count = name[4]; 1362 } 1363 1364 proclist_lock_read(); 1365 1366 pd = proclists; 1367 again: 1368 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1369 /* 1370 * Skip embryonic processes. 1371 */ 1372 if (p->p_stat == SIDL) 1373 continue; 1374 /* 1375 * TODO - make more efficient (see notes below). 1376 * do by session. 1377 */ 1378 switch (op) { 1379 1380 case KERN_PROC_PID: 1381 /* could do this with just a lookup */ 1382 if (p->p_pid != (pid_t)arg) 1383 continue; 1384 break; 1385 1386 case KERN_PROC_PGRP: 1387 /* could do this by traversing pgrp */ 1388 if (p->p_pgrp->pg_id != (pid_t)arg) 1389 continue; 1390 break; 1391 1392 case KERN_PROC_SESSION: 1393 if (p->p_session->s_sid != (pid_t)arg) 1394 continue; 1395 break; 1396 1397 case KERN_PROC_TTY: 1398 if (arg == KERN_PROC_TTY_REVOKE) { 1399 if ((p->p_flag & P_CONTROLT) == 0 || 1400 p->p_session->s_ttyp == NULL || 1401 p->p_session->s_ttyvp != NULL) 1402 continue; 1403 } else if ((p->p_flag & P_CONTROLT) == 0 || 1404 p->p_session->s_ttyp == NULL) { 1405 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1406 continue; 1407 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1408 continue; 1409 break; 1410 1411 case KERN_PROC_UID: 1412 if (p->p_ucred->cr_uid != (uid_t)arg) 1413 continue; 1414 break; 1415 1416 case KERN_PROC_RUID: 1417 if (p->p_cred->p_ruid != (uid_t)arg) 1418 continue; 1419 break; 1420 1421 case KERN_PROC_GID: 1422 if (p->p_ucred->cr_gid != (uid_t)arg) 1423 continue; 1424 break; 1425 1426 case KERN_PROC_RGID: 1427 if (p->p_cred->p_rgid != (uid_t)arg) 1428 continue; 1429 break; 1430 1431 case KERN_PROC_ALL: 1432 /* allow everything */ 1433 break; 1434 1435 default: 1436 error = EINVAL; 1437 goto cleanup; 1438 } 1439 if (type == KERN_PROC) { 1440 if (buflen >= sizeof(struct kinfo_proc)) { 1441 fill_eproc(p, &eproc); 1442 error = copyout((caddr_t)p, &dp->kp_proc, 1443 sizeof(struct proc)); 1444 if (error) 1445 goto cleanup; 1446 error = copyout((caddr_t)&eproc, &dp->kp_eproc, 1447 sizeof(eproc)); 1448 if (error) 1449 goto cleanup; 1450 dp++; 1451 buflen -= sizeof(struct kinfo_proc); 1452 } 1453 needed += sizeof(struct kinfo_proc); 1454 } else { /* KERN_PROC2 */ 1455 if (buflen >= elem_size && elem_count > 0) { 1456 fill_kproc2(p, &kproc2); 1457 /* 1458 * Copy out elem_size, but not larger than 1459 * the size of a struct kinfo_proc2. 1460 */ 1461 error = copyout(&kproc2, dp2, 1462 min(sizeof(kproc2), elem_size)); 1463 if (error) 1464 goto cleanup; 1465 dp2 += elem_size; 1466 buflen -= elem_size; 1467 elem_count--; 1468 } 1469 needed += elem_size; 1470 } 1471 } 1472 pd++; 1473 if (pd->pd_list != NULL) 1474 goto again; 1475 proclist_unlock_read(); 1476 1477 if (where != NULL) { 1478 if (type == KERN_PROC) 1479 *sizep = (caddr_t)dp - where; 1480 else 1481 *sizep = dp2 - where; 1482 if (needed > *sizep) 1483 return (ENOMEM); 1484 } else { 1485 needed += KERN_PROCSLOP; 1486 *sizep = needed; 1487 } 1488 return (0); 1489 cleanup: 1490 proclist_unlock_read(); 1491 return (error); 1492 } 1493 1494 /* 1495 * Fill in an eproc structure for the specified process. 1496 */ 1497 void 1498 fill_eproc(p, ep) 1499 struct proc *p; 1500 struct eproc *ep; 1501 { 1502 struct tty *tp; 1503 struct lwp *l; 1504 1505 /* Pick a "representative" LWP */ 1506 l = proc_representative_lwp(p); 1507 1508 ep->e_paddr = p; 1509 ep->e_sess = p->p_session; 1510 ep->e_pcred = *p->p_cred; 1511 ep->e_ucred = *p->p_ucred; 1512 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1513 ep->e_vm.vm_rssize = 0; 1514 ep->e_vm.vm_tsize = 0; 1515 ep->e_vm.vm_dsize = 0; 1516 ep->e_vm.vm_ssize = 0; 1517 /* ep->e_vm.vm_pmap = XXX; */ 1518 } else { 1519 struct vmspace *vm = p->p_vmspace; 1520 1521 ep->e_vm.vm_rssize = vm_resident_count(vm); 1522 ep->e_vm.vm_tsize = vm->vm_tsize; 1523 ep->e_vm.vm_dsize = vm->vm_dsize; 1524 ep->e_vm.vm_ssize = vm->vm_ssize; 1525 } 1526 if (p->p_pptr) 1527 ep->e_ppid = p->p_pptr->p_pid; 1528 else 1529 ep->e_ppid = 0; 1530 ep->e_pgid = p->p_pgrp->pg_id; 1531 ep->e_sid = ep->e_sess->s_sid; 1532 ep->e_jobc = p->p_pgrp->pg_jobc; 1533 if ((p->p_flag & P_CONTROLT) && 1534 (tp = ep->e_sess->s_ttyp)) { 1535 ep->e_tdev = tp->t_dev; 1536 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1537 ep->e_tsess = tp->t_session; 1538 } else 1539 ep->e_tdev = NODEV; 1540 if (l->l_wmesg) 1541 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 1542 1543 ep->e_xsize = ep->e_xrssize = 0; 1544 ep->e_xccount = ep->e_xswrss = 0; 1545 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 1546 if (SESS_LEADER(p)) 1547 ep->e_flag |= EPROC_SLEADER; 1548 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 1549 } 1550 1551 /* 1552 * Fill in an eproc structure for the specified process. 1553 */ 1554 static void 1555 fill_kproc2(p, ki) 1556 struct proc *p; 1557 struct kinfo_proc2 *ki; 1558 { 1559 struct tty *tp; 1560 struct lwp *l; 1561 memset(ki, 0, sizeof(*ki)); 1562 1563 /* Pick a "representative" LWP */ 1564 l = proc_representative_lwp(p); 1565 1566 /* XXX NJWLWP 1567 * These are likely not what the caller was looking for. 1568 * The perils of playing with the kernel data structures... 1569 */ 1570 ki->p_forw = PTRTOINT64(l->l_forw); 1571 ki->p_back = PTRTOINT64(l->l_back); 1572 1573 ki->p_paddr = PTRTOINT64(p); 1574 1575 ki->p_addr = PTRTOINT64(l->l_addr); 1576 ki->p_fd = PTRTOINT64(p->p_fd); 1577 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 1578 ki->p_stats = PTRTOINT64(p->p_stats); 1579 ki->p_limit = PTRTOINT64(p->p_limit); 1580 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 1581 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 1582 ki->p_sess = PTRTOINT64(p->p_session); 1583 ki->p_tsess = 0; /* may be changed if controlling tty below */ 1584 ki->p_ru = PTRTOINT64(p->p_ru); 1585 1586 ki->p_eflag = 0; 1587 ki->p_exitsig = p->p_exitsig; 1588 ki->p_flag = p->p_flag; 1589 1590 ki->p_pid = p->p_pid; 1591 if (p->p_pptr) 1592 ki->p_ppid = p->p_pptr->p_pid; 1593 else 1594 ki->p_ppid = 0; 1595 ki->p_sid = p->p_session->s_sid; 1596 ki->p__pgid = p->p_pgrp->pg_id; 1597 1598 ki->p_tpgid = NO_PID; /* may be changed if controlling tty below */ 1599 1600 ki->p_uid = p->p_ucred->cr_uid; 1601 ki->p_ruid = p->p_cred->p_ruid; 1602 ki->p_gid = p->p_ucred->cr_gid; 1603 ki->p_rgid = p->p_cred->p_rgid; 1604 1605 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 1606 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 1607 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 1608 1609 ki->p_jobc = p->p_pgrp->pg_jobc; 1610 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 1611 ki->p_tdev = tp->t_dev; 1612 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1613 ki->p_tsess = PTRTOINT64(tp->t_session); 1614 } else { 1615 ki->p_tdev = NODEV; 1616 } 1617 1618 ki->p_estcpu = p->p_estcpu; 1619 ki->p_rtime_sec = p->p_rtime.tv_sec; 1620 ki->p_rtime_usec = p->p_rtime.tv_usec; 1621 ki->p_cpticks = p->p_cpticks; 1622 ki->p_pctcpu = p->p_pctcpu; 1623 ki->p_swtime = l->l_swtime; 1624 ki->p_slptime = l->l_slptime; 1625 if (l->l_stat == LSONPROC) { 1626 KDASSERT(l->l_cpu != NULL); 1627 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 1628 } else 1629 ki->p_schedflags = 0; 1630 1631 ki->p_uticks = p->p_uticks; 1632 ki->p_sticks = p->p_sticks; 1633 ki->p_iticks = p->p_iticks; 1634 1635 ki->p_tracep = PTRTOINT64(p->p_tracep); 1636 ki->p_traceflag = p->p_traceflag; 1637 1638 ki->p_holdcnt = l->l_holdcnt; 1639 1640 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 1641 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 1642 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 1643 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 1644 1645 ki->p_stat = p->p_stat; 1646 ki->p_priority = l->l_priority; 1647 ki->p_usrpri = l->l_usrpri; 1648 ki->p_nice = p->p_nice; 1649 1650 ki->p_xstat = p->p_xstat; 1651 ki->p_acflag = p->p_acflag; 1652 1653 strncpy(ki->p_comm, p->p_comm, 1654 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 1655 1656 if (l->l_wmesg) 1657 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 1658 ki->p_wchan = PTRTOINT64(l->l_wchan); 1659 1660 strncpy(ki->p_login, p->p_session->s_login, sizeof(ki->p_login)); 1661 1662 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1663 ki->p_vm_rssize = 0; 1664 ki->p_vm_tsize = 0; 1665 ki->p_vm_dsize = 0; 1666 ki->p_vm_ssize = 0; 1667 } else { 1668 struct vmspace *vm = p->p_vmspace; 1669 1670 ki->p_vm_rssize = vm_resident_count(vm); 1671 ki->p_vm_tsize = vm->vm_tsize; 1672 ki->p_vm_dsize = vm->vm_dsize; 1673 ki->p_vm_ssize = vm->vm_ssize; 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 ((l->l_flag & L_INMEM) == 0 || 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 11:09:46 GMT 2025