kern_sysctl.c revision 1.108.4.4
1 /* $NetBSD: kern_sysctl.c,v 1.108.4.4 2003/10/02 08:59:10 tron 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 <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: kern_sysctl.c,v 1.108.4.4 2003/10/02 08:59:10 tron Exp $"); 47 48 #include "opt_ddb.h" 49 #include "opt_insecure.h" 50 #include "opt_defcorename.h" 51 #include "opt_pipe.h" 52 #include "opt_sysv.h" 53 #include "pty.h" 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/kernel.h> 58 #include <sys/buf.h> 59 #include <sys/device.h> 60 #include <sys/disklabel.h> 61 #include <sys/dkstat.h> 62 #include <sys/exec.h> 63 #include <sys/file.h> 64 #include <sys/ioctl.h> 65 #include <sys/malloc.h> 66 #include <sys/mount.h> 67 #include <sys/msgbuf.h> 68 #include <sys/pool.h> 69 #include <sys/proc.h> 70 #include <sys/resource.h> 71 #include <sys/resourcevar.h> 72 #include <sys/syscallargs.h> 73 #include <sys/tty.h> 74 #include <sys/unistd.h> 75 #include <sys/vnode.h> 76 #include <sys/socketvar.h> 77 #define __SYSCTL_PRIVATE 78 #include <sys/sysctl.h> 79 #include <sys/lock.h> 80 #include <sys/namei.h> 81 82 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 83 #include <sys/ipc.h> 84 #endif 85 #ifdef SYSVMSG 86 #include <sys/msg.h> 87 #endif 88 #ifdef SYSVSEM 89 #include <sys/sem.h> 90 #endif 91 #ifdef SYSVSHM 92 #include <sys/shm.h> 93 #endif 94 95 #include <dev/cons.h> 96 97 #if defined(DDB) 98 #include <ddb/ddbvar.h> 99 #endif 100 101 #ifndef PIPE_SOCKETPAIR 102 #include <sys/pipe.h> 103 #endif 104 105 #define PTRTOINT64(foo) ((u_int64_t)(uintptr_t)(foo)) 106 107 static int sysctl_file(void *, size_t *); 108 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 109 static int sysctl_sysvipc(int *, u_int, void *, size_t *); 110 #endif 111 static int sysctl_msgbuf(void *, size_t *); 112 static int sysctl_doeproc(int *, u_int, void *, size_t *); 113 static int sysctl_dotkstat(int *, u_int, void *, size_t *, void *); 114 #ifdef MULTIPROCESSOR 115 static int sysctl_docptime(void *, size_t *, void *); 116 static int sysctl_ncpus(void); 117 #endif 118 static void fill_kproc2(struct proc *, struct kinfo_proc2 *); 119 static int sysctl_procargs(int *, u_int, void *, size_t *, struct proc *); 120 #if NPTY > 0 121 static int sysctl_pty(void *, size_t *, void *, size_t); 122 #endif 123 124 /* 125 * The `sysctl_memlock' is intended to keep too many processes from 126 * locking down memory by doing sysctls at once. Whether or not this 127 * is really a good idea to worry about it probably a subject of some 128 * debate. 129 */ 130 struct lock sysctl_memlock; 131 132 void 133 sysctl_init(void) 134 { 135 136 lockinit(&sysctl_memlock, PRIBIO|PCATCH, "sysctl", 0, 0); 137 } 138 139 int 140 sys___sysctl(struct proc *p, void *v, register_t *retval) 141 { 142 struct sys___sysctl_args /* { 143 syscallarg(int *) name; 144 syscallarg(u_int) namelen; 145 syscallarg(void *) old; 146 syscallarg(size_t *) oldlenp; 147 syscallarg(void *) new; 148 syscallarg(size_t) newlen; 149 } */ *uap = v; 150 int error; 151 size_t savelen = 0, oldlen = 0; 152 sysctlfn *fn; 153 int name[CTL_MAXNAME]; 154 155 /* 156 * all top-level sysctl names are non-terminal 157 */ 158 if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 2) 159 return (EINVAL); 160 error = copyin(SCARG(uap, name), &name, 161 SCARG(uap, namelen) * sizeof(int)); 162 if (error) 163 return (error); 164 165 /* 166 * For all but CTL_PROC, must be root to change a value. 167 * For CTL_PROC, must be root, or owner of the proc (and not suid), 168 * this is checked in proc_sysctl() (once we know the targer proc). 169 */ 170 if (SCARG(uap, new) != NULL && name[0] != CTL_PROC && 171 (error = suser(p->p_ucred, &p->p_acflag))) 172 return error; 173 174 switch (name[0]) { 175 case CTL_KERN: 176 fn = kern_sysctl; 177 break; 178 case CTL_HW: 179 fn = hw_sysctl; 180 break; 181 case CTL_VM: 182 fn = uvm_sysctl; 183 break; 184 case CTL_NET: 185 fn = net_sysctl; 186 break; 187 case CTL_VFS: 188 fn = vfs_sysctl; 189 break; 190 case CTL_MACHDEP: 191 fn = cpu_sysctl; 192 break; 193 #ifdef DEBUG 194 case CTL_DEBUG: 195 fn = debug_sysctl; 196 break; 197 #endif 198 #ifdef DDB 199 case CTL_DDB: 200 fn = ddb_sysctl; 201 break; 202 #endif 203 case CTL_PROC: 204 fn = proc_sysctl; 205 break; 206 207 case CTL_EMUL: 208 fn = emul_sysctl; 209 break; 210 default: 211 return (EOPNOTSUPP); 212 } 213 214 /* 215 * XXX Hey, we wire `old', but what about `new'? 216 */ 217 218 if (SCARG(uap, oldlenp)) { 219 if ((error = copyin(SCARG(uap, oldlenp), &oldlen, 220 sizeof(oldlen)))) 221 return (error); 222 } 223 if (SCARG(uap, old) != NULL) { 224 error = lockmgr(&sysctl_memlock, LK_EXCLUSIVE, NULL); 225 if (error) 226 return (error); 227 error = uvm_vslock(p, SCARG(uap, old), oldlen, VM_PROT_WRITE); 228 if (error) { 229 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 230 return error; 231 } 232 savelen = oldlen; 233 } 234 error = (*fn)(name + 1, SCARG(uap, namelen) - 1, SCARG(uap, old), 235 &oldlen, SCARG(uap, new), SCARG(uap, newlen), p); 236 if (SCARG(uap, old) != NULL) { 237 uvm_vsunlock(p, SCARG(uap, old), savelen); 238 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 239 } 240 if (error) 241 return (error); 242 if (SCARG(uap, oldlenp)) 243 error = copyout(&oldlen, SCARG(uap, oldlenp), sizeof(oldlen)); 244 return (error); 245 } 246 247 /* 248 * Attributes stored in the kernel. 249 */ 250 char hostname[MAXHOSTNAMELEN]; 251 int hostnamelen; 252 253 char domainname[MAXHOSTNAMELEN]; 254 int domainnamelen; 255 256 long hostid; 257 258 #ifdef INSECURE 259 int securelevel = -1; 260 #else 261 int securelevel = 0; 262 #endif 263 264 #ifndef DEFCORENAME 265 #define DEFCORENAME "%n.core" 266 #endif 267 char defcorename[MAXPATHLEN] = DEFCORENAME; 268 int defcorenamelen = sizeof(DEFCORENAME); 269 270 extern int kern_logsigexit; 271 extern fixpt_t ccpu; 272 273 #ifndef MULTIPROCESSOR 274 #define sysctl_ncpus() 1 275 #endif 276 277 #ifdef MULTIPROCESSOR 278 279 #ifndef CPU_INFO_FOREACH 280 #define CPU_INFO_ITERATOR int 281 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 282 #endif 283 284 static int 285 sysctl_docptime(void *oldp, size_t *oldlenp, void *newp) 286 { 287 u_int64_t cp_time[CPUSTATES]; 288 int i; 289 struct cpu_info *ci; 290 CPU_INFO_ITERATOR cii; 291 292 for (i=0; i<CPUSTATES; i++) 293 cp_time[i] = 0; 294 295 for (CPU_INFO_FOREACH(cii, ci)) { 296 for (i=0; i<CPUSTATES; i++) 297 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 298 } 299 return (sysctl_rdstruct(oldp, oldlenp, newp, 300 cp_time, sizeof(cp_time))); 301 } 302 303 static int 304 sysctl_ncpus(void) 305 { 306 struct cpu_info *ci; 307 CPU_INFO_ITERATOR cii; 308 309 int ncpus = 0; 310 for (CPU_INFO_FOREACH(cii, ci)) 311 ncpus++; 312 return ncpus; 313 } 314 315 #endif 316 317 /* 318 * kernel related system variables. 319 */ 320 int 321 kern_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 322 void *newp, size_t newlen, struct proc *p) 323 { 324 int error, level, inthostid; 325 int old_autonicetime; 326 int old_vnodes; 327 dev_t consdev; 328 329 /* All sysctl names at this level, except for a few, are terminal. */ 330 switch (name[0]) { 331 case KERN_PROC: 332 case KERN_PROC2: 333 case KERN_PROF: 334 case KERN_MBUF: 335 case KERN_PROC_ARGS: 336 case KERN_SYSVIPC_INFO: 337 case KERN_PIPE: 338 case KERN_TKSTAT: 339 /* Not terminal. */ 340 break; 341 default: 342 if (namelen != 1) 343 return (ENOTDIR); /* overloaded */ 344 } 345 346 switch (name[0]) { 347 case KERN_OSTYPE: 348 return (sysctl_rdstring(oldp, oldlenp, newp, ostype)); 349 case KERN_OSRELEASE: 350 return (sysctl_rdstring(oldp, oldlenp, newp, osrelease)); 351 case KERN_OSREV: 352 return (sysctl_rdint(oldp, oldlenp, newp, __NetBSD_Version__)); 353 case KERN_VERSION: 354 return (sysctl_rdstring(oldp, oldlenp, newp, version)); 355 case KERN_MAXVNODES: 356 old_vnodes = desiredvnodes; 357 error = sysctl_int(oldp, oldlenp, newp, newlen, &desiredvnodes); 358 if (newp && !error) { 359 if (old_vnodes > desiredvnodes) { 360 desiredvnodes = old_vnodes; 361 return (EINVAL); 362 } 363 vfs_reinit(); 364 nchreinit(); 365 } 366 return (error); 367 case KERN_MAXPROC: 368 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxproc)); 369 case KERN_MAXFILES: 370 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxfiles)); 371 case KERN_ARGMAX: 372 return (sysctl_rdint(oldp, oldlenp, newp, ARG_MAX)); 373 case KERN_SECURELVL: 374 level = securelevel; 375 if ((error = sysctl_int(oldp, oldlenp, newp, newlen, &level)) || 376 newp == NULL) 377 return (error); 378 if (level < securelevel && p->p_pid != 1) 379 return (EPERM); 380 securelevel = level; 381 return (0); 382 case KERN_HOSTNAME: 383 error = sysctl_string(oldp, oldlenp, newp, newlen, 384 hostname, sizeof(hostname)); 385 if (newp && !error) 386 hostnamelen = newlen; 387 return (error); 388 case KERN_DOMAINNAME: 389 error = sysctl_string(oldp, oldlenp, newp, newlen, 390 domainname, sizeof(domainname)); 391 if (newp && !error) 392 domainnamelen = newlen; 393 return (error); 394 case KERN_HOSTID: 395 inthostid = hostid; /* XXX assumes sizeof long <= sizeof int */ 396 error = sysctl_int(oldp, oldlenp, newp, newlen, &inthostid); 397 if (newp && !error) 398 hostid = inthostid; 399 return (error); 400 case KERN_CLOCKRATE: 401 return (sysctl_clockrate(oldp, oldlenp)); 402 case KERN_BOOTTIME: 403 return (sysctl_rdstruct(oldp, oldlenp, newp, &boottime, 404 sizeof(struct timeval))); 405 case KERN_VNODE: 406 return (sysctl_vnode(oldp, oldlenp, p)); 407 case KERN_PROC: 408 case KERN_PROC2: 409 return (sysctl_doeproc(name, namelen, oldp, oldlenp)); 410 case KERN_PROC_ARGS: 411 return (sysctl_procargs(name + 1, namelen - 1, 412 oldp, oldlenp, p)); 413 case KERN_FILE: 414 return (sysctl_file(oldp, oldlenp)); 415 #ifdef GPROF 416 case KERN_PROF: 417 return (sysctl_doprof(name + 1, namelen - 1, oldp, oldlenp, 418 newp, newlen)); 419 #endif 420 case KERN_POSIX1: 421 return (sysctl_rdint(oldp, oldlenp, newp, _POSIX_VERSION)); 422 case KERN_NGROUPS: 423 return (sysctl_rdint(oldp, oldlenp, newp, NGROUPS_MAX)); 424 case KERN_JOB_CONTROL: 425 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 426 case KERN_SAVED_IDS: 427 #ifdef _POSIX_SAVED_IDS 428 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 429 #else 430 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 431 #endif 432 case KERN_MAXPARTITIONS: 433 return (sysctl_rdint(oldp, oldlenp, newp, MAXPARTITIONS)); 434 case KERN_RAWPARTITION: 435 return (sysctl_rdint(oldp, oldlenp, newp, RAW_PART)); 436 #ifdef NTP 437 case KERN_NTPTIME: 438 return (sysctl_ntptime(oldp, oldlenp)); 439 #endif 440 case KERN_AUTONICETIME: 441 old_autonicetime = autonicetime; 442 error = sysctl_int(oldp, oldlenp, newp, newlen, &autonicetime); 443 if (autonicetime < 0) 444 autonicetime = old_autonicetime; 445 return (error); 446 case KERN_AUTONICEVAL: 447 error = sysctl_int(oldp, oldlenp, newp, newlen, &autoniceval); 448 if (autoniceval < PRIO_MIN) 449 autoniceval = PRIO_MIN; 450 if (autoniceval > PRIO_MAX) 451 autoniceval = PRIO_MAX; 452 return (error); 453 case KERN_RTC_OFFSET: 454 return (sysctl_rdint(oldp, oldlenp, newp, rtc_offset)); 455 case KERN_ROOT_DEVICE: 456 return (sysctl_rdstring(oldp, oldlenp, newp, 457 root_device->dv_xname)); 458 case KERN_MSGBUFSIZE: 459 /* 460 * deal with cases where the message buffer has 461 * become corrupted. 462 */ 463 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 464 msgbufenabled = 0; 465 return (ENXIO); 466 } 467 return (sysctl_rdint(oldp, oldlenp, newp, msgbufp->msg_bufs)); 468 case KERN_FSYNC: 469 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 470 case KERN_SYSVMSG: 471 #ifdef SYSVMSG 472 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 473 #else 474 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 475 #endif 476 case KERN_SYSVSEM: 477 #ifdef SYSVSEM 478 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 479 #else 480 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 481 #endif 482 case KERN_SYSVSHM: 483 #ifdef SYSVSHM 484 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 485 #else 486 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 487 #endif 488 case KERN_DEFCORENAME: 489 if (newp && newlen < 1) 490 return (EINVAL); 491 error = sysctl_string(oldp, oldlenp, newp, newlen, 492 defcorename, sizeof(defcorename)); 493 if (newp && !error) 494 defcorenamelen = newlen; 495 return (error); 496 case KERN_SYNCHRONIZED_IO: 497 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 498 case KERN_IOV_MAX: 499 return (sysctl_rdint(oldp, oldlenp, newp, IOV_MAX)); 500 case KERN_MBUF: 501 return (sysctl_dombuf(name + 1, namelen - 1, oldp, oldlenp, 502 newp, newlen)); 503 case KERN_MAPPED_FILES: 504 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 505 case KERN_MEMLOCK: 506 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 507 case KERN_MEMLOCK_RANGE: 508 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 509 case KERN_MEMORY_PROTECTION: 510 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 511 case KERN_LOGIN_NAME_MAX: 512 return (sysctl_rdint(oldp, oldlenp, newp, LOGIN_NAME_MAX)); 513 case KERN_LOGSIGEXIT: 514 return (sysctl_int(oldp, oldlenp, newp, newlen, 515 &kern_logsigexit)); 516 case KERN_FSCALE: 517 return (sysctl_rdint(oldp, oldlenp, newp, FSCALE)); 518 case KERN_CCPU: 519 return (sysctl_rdint(oldp, oldlenp, newp, ccpu)); 520 case KERN_CP_TIME: 521 #ifndef MULTIPROCESSOR 522 return (sysctl_rdstruct(oldp, oldlenp, newp, 523 curcpu()->ci_schedstate.spc_cp_time, 524 sizeof(curcpu()->ci_schedstate.spc_cp_time))); 525 #else 526 return (sysctl_docptime(oldp, oldlenp, newp)); 527 #endif 528 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 529 case KERN_SYSVIPC_INFO: 530 return (sysctl_sysvipc(name + 1, namelen - 1, oldp, oldlenp)); 531 #endif 532 case KERN_MSGBUF: 533 return (sysctl_msgbuf(oldp, oldlenp)); 534 case KERN_CONSDEV: 535 if (cn_tab != NULL) 536 consdev = cn_tab->cn_dev; 537 else 538 consdev = NODEV; 539 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 540 sizeof consdev)); 541 #if NPTY > 0 542 case KERN_MAXPTYS: 543 return sysctl_pty(oldp, oldlenp, newp, newlen); 544 #endif 545 #ifndef PIPE_SOCKETPAIR 546 case KERN_PIPE: 547 return (sysctl_dopipe(name + 1, namelen - 1, oldp, oldlenp, 548 newp, newlen)); 549 #endif 550 case KERN_MAXPHYS: 551 return (sysctl_rdint(oldp, oldlenp, newp, MAXPHYS)); 552 case KERN_SBMAX: 553 { 554 int new_sbmax = sb_max; 555 556 error = sysctl_int(oldp, oldlenp, newp, newlen, &new_sbmax); 557 if (newp && !error) { 558 if (new_sbmax < (16 * 1024)) /* sanity */ 559 return (EINVAL); 560 sb_max = new_sbmax; 561 } 562 return (error); 563 } 564 case KERN_TKSTAT: 565 return (sysctl_dotkstat(name + 1, namelen - 1, oldp, oldlenp, 566 newp)); 567 case KERN_MONOTONIC_CLOCK: /* XXX _POSIX_VERSION */ 568 return (sysctl_rdint(oldp, oldlenp, newp, 200112)); 569 default: 570 return (EOPNOTSUPP); 571 } 572 /* NOTREACHED */ 573 } 574 575 /* 576 * hardware related system variables. 577 */ 578 int 579 hw_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 580 void *newp, size_t newlen, struct proc *p) 581 { 582 583 /* All sysctl names at this level, except for a few, are terminal. */ 584 switch (name[0]) { 585 case HW_DISKSTATS: 586 /* Not terminal. */ 587 break; 588 default: 589 if (namelen != 1) 590 return (ENOTDIR); /* overloaded */ 591 } 592 593 switch (name[0]) { 594 case HW_MACHINE: 595 return (sysctl_rdstring(oldp, oldlenp, newp, machine)); 596 case HW_MACHINE_ARCH: 597 return (sysctl_rdstring(oldp, oldlenp, newp, machine_arch)); 598 case HW_MODEL: 599 return (sysctl_rdstring(oldp, oldlenp, newp, cpu_model)); 600 case HW_NCPU: 601 return (sysctl_rdint(oldp, oldlenp, newp, sysctl_ncpus())); 602 case HW_BYTEORDER: 603 return (sysctl_rdint(oldp, oldlenp, newp, BYTE_ORDER)); 604 case HW_PHYSMEM: 605 return (sysctl_rdint(oldp, oldlenp, newp, ctob(physmem))); 606 case HW_USERMEM: 607 return (sysctl_rdint(oldp, oldlenp, newp, 608 ctob(physmem - uvmexp.wired))); 609 case HW_PAGESIZE: 610 return (sysctl_rdint(oldp, oldlenp, newp, PAGE_SIZE)); 611 case HW_ALIGNBYTES: 612 return (sysctl_rdint(oldp, oldlenp, newp, ALIGNBYTES)); 613 case HW_DISKNAMES: 614 return (sysctl_disknames(oldp, oldlenp)); 615 case HW_DISKSTATS: 616 return (sysctl_diskstats(name + 1, namelen - 1, oldp, oldlenp)); 617 case HW_CNMAGIC: { 618 char magic[CNS_LEN]; 619 int error; 620 621 if (oldp) 622 cn_get_magic(magic, CNS_LEN); 623 error = sysctl_string(oldp, oldlenp, newp, newlen, 624 magic, sizeof(magic)); 625 if (newp && !error) { 626 error = cn_set_magic(magic); 627 } 628 return (error); 629 } 630 default: 631 return (EOPNOTSUPP); 632 } 633 /* NOTREACHED */ 634 } 635 636 #ifdef DEBUG 637 /* 638 * Debugging related system variables. 639 */ 640 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 641 struct ctldebug debug5, debug6, debug7, debug8, debug9; 642 struct ctldebug debug10, debug11, debug12, debug13, debug14; 643 struct ctldebug debug15, debug16, debug17, debug18, debug19; 644 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 645 &debug0, &debug1, &debug2, &debug3, &debug4, 646 &debug5, &debug6, &debug7, &debug8, &debug9, 647 &debug10, &debug11, &debug12, &debug13, &debug14, 648 &debug15, &debug16, &debug17, &debug18, &debug19, 649 }; 650 651 int 652 debug_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 653 void *newp, size_t newlen, struct proc *p) 654 { 655 struct ctldebug *cdp; 656 657 /* all sysctl names at this level are name and field */ 658 if (namelen != 2) 659 return (ENOTDIR); /* overloaded */ 660 if (name[0] < 0 || name[0] >= CTL_DEBUG_MAXID) 661 return (EOPNOTSUPP); 662 cdp = debugvars[name[0]]; 663 if (cdp->debugname == 0) 664 return (EOPNOTSUPP); 665 switch (name[1]) { 666 case CTL_DEBUG_NAME: 667 return (sysctl_rdstring(oldp, oldlenp, newp, cdp->debugname)); 668 case CTL_DEBUG_VALUE: 669 return (sysctl_int(oldp, oldlenp, newp, newlen, cdp->debugvar)); 670 default: 671 return (EOPNOTSUPP); 672 } 673 /* NOTREACHED */ 674 } 675 #endif /* DEBUG */ 676 677 int 678 proc_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 679 void *newp, size_t newlen, struct proc *p) 680 { 681 struct proc *ptmp = NULL; 682 int error = 0; 683 struct rlimit alim; 684 struct plimit *newplim; 685 char *tmps = NULL; 686 int i, curlen, len; 687 688 if (namelen < 2) 689 return EINVAL; 690 691 if (name[0] == PROC_CURPROC) { 692 ptmp = p; 693 } else if ((ptmp = pfind((pid_t)name[0])) == NULL) { 694 return (ESRCH); 695 } else { 696 if (p->p_ucred->cr_uid != 0) { 697 if(p->p_cred->p_ruid != ptmp->p_cred->p_ruid || 698 p->p_cred->p_ruid != ptmp->p_cred->p_svuid) 699 return EPERM; 700 if (ptmp->p_cred->p_rgid != ptmp->p_cred->p_svgid) 701 return EPERM; /* sgid proc */ 702 for (i = 0; i < p->p_ucred->cr_ngroups; i++) { 703 if (p->p_ucred->cr_groups[i] == 704 ptmp->p_cred->p_rgid) 705 break; 706 } 707 if (i == p->p_ucred->cr_ngroups) 708 return EPERM; 709 } 710 } 711 if (name[1] == PROC_PID_CORENAME) { 712 if (namelen != 2) 713 return EINVAL; 714 /* 715 * Can't use sysctl_string() here because we may malloc a new 716 * area during the process, so we have to do it by hand. 717 */ 718 curlen = strlen(ptmp->p_limit->pl_corename) + 1; 719 if (oldlenp && *oldlenp < curlen) { 720 if (!oldp) 721 *oldlenp = curlen; 722 return (ENOMEM); 723 } 724 if (newp) { 725 if (securelevel > 2) 726 return EPERM; 727 if (newlen > MAXPATHLEN) 728 return ENAMETOOLONG; 729 tmps = malloc(newlen + 1, M_TEMP, M_WAITOK); 730 if (tmps == NULL) 731 return ENOMEM; 732 error = copyin(newp, tmps, newlen + 1); 733 tmps[newlen] = '\0'; 734 if (error) 735 goto cleanup; 736 /* Enforce to be either 'core' for end with '.core' */ 737 if (newlen < 4) { /* c.o.r.e */ 738 error = EINVAL; 739 goto cleanup; 740 } 741 len = newlen - 4; 742 if (len > 0) { 743 if (tmps[len - 1] != '.' && 744 tmps[len - 1] != '/') { 745 error = EINVAL; 746 goto cleanup; 747 } 748 } 749 if (strcmp(&tmps[len], "core") != 0) { 750 error = EINVAL; 751 goto cleanup; 752 } 753 } 754 if (oldp && oldlenp) { 755 *oldlenp = curlen; 756 error = copyout(ptmp->p_limit->pl_corename, oldp, 757 curlen); 758 } 759 if (newp && error == 0) { 760 /* if the 2 strings are identical, don't limcopy() */ 761 if (strcmp(tmps, ptmp->p_limit->pl_corename) == 0) { 762 error = 0; 763 goto cleanup; 764 } 765 if (ptmp->p_limit->p_refcnt > 1 && 766 (ptmp->p_limit->p_lflags & PL_SHAREMOD) == 0) { 767 newplim = limcopy(ptmp->p_limit); 768 limfree(ptmp->p_limit); 769 ptmp->p_limit = newplim; 770 } 771 if (ptmp->p_limit->pl_corename != defcorename) { 772 free(ptmp->p_limit->pl_corename, M_TEMP); 773 } 774 ptmp->p_limit->pl_corename = tmps; 775 return (0); 776 } 777 cleanup: 778 if (tmps) 779 free(tmps, M_TEMP); 780 return (error); 781 } 782 if (name[1] == PROC_PID_LIMIT) { 783 if (namelen != 4 || name[2] < 1 || 784 name[2] >= PROC_PID_LIMIT_MAXID) 785 return EINVAL; 786 memcpy(&alim, &ptmp->p_rlimit[name[2] - 1], sizeof(alim)); 787 if (name[3] == PROC_PID_LIMIT_TYPE_HARD) 788 error = sysctl_quad(oldp, oldlenp, newp, newlen, 789 &alim.rlim_max); 790 else if (name[3] == PROC_PID_LIMIT_TYPE_SOFT) 791 error = sysctl_quad(oldp, oldlenp, newp, newlen, 792 &alim.rlim_cur); 793 else 794 error = EINVAL; 795 796 if (error) 797 return error; 798 799 if (newp) 800 error = dosetrlimit(ptmp, p->p_cred, 801 name[2] - 1, &alim); 802 return error; 803 } 804 return (EINVAL); 805 } 806 807 int 808 emul_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 809 void *newp, size_t newlen, struct proc *p) 810 { 811 static struct { 812 const char *name; 813 int type; 814 } emulations[] = CTL_EMUL_NAMES; 815 const struct emul *e; 816 const char *ename; 817 #ifdef LKM 818 extern struct lock exec_lock; /* XXX */ 819 int error; 820 #else 821 extern int nexecs_builtin; 822 extern const struct execsw execsw_builtin[]; 823 int i; 824 #endif 825 826 /* all sysctl names at this level are name and field */ 827 if (namelen < 2) 828 return (ENOTDIR); /* overloaded */ 829 830 if ((u_int) name[0] >= EMUL_MAXID || name[0] == 0) 831 return (EOPNOTSUPP); 832 833 ename = emulations[name[0]].name; 834 835 #ifdef LKM 836 lockmgr(&exec_lock, LK_SHARED, NULL); 837 if ((e = emul_search(ename))) { 838 error = (*e->e_sysctl)(name + 1, namelen - 1, oldp, oldlenp, 839 newp, newlen, p); 840 } else 841 error = EOPNOTSUPP; 842 lockmgr(&exec_lock, LK_RELEASE, NULL); 843 844 return (error); 845 #else 846 for (i = 0; i < nexecs_builtin; i++) { 847 e = execsw_builtin[i].es_emul; 848 if (e == NULL || strcmp(ename, e->e_name) != 0 || 849 e->e_sysctl != NULL) 850 continue; 851 852 return (*e->e_sysctl)(name + 1, namelen - 1, oldp, oldlenp, 853 newp, newlen, p); 854 } 855 856 return (EOPNOTSUPP); 857 #endif 858 } 859 /* 860 * Convenience macros. 861 */ 862 863 #define SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, len) \ 864 if (oldlenp) { \ 865 if (!oldp) \ 866 *oldlenp = len; \ 867 else { \ 868 if (*oldlenp < len) \ 869 return(ENOMEM); \ 870 *oldlenp = len; \ 871 error = copyout((caddr_t)valp, oldp, len); \ 872 } \ 873 } 874 875 #define SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, typ) \ 876 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, sizeof(typ)) 877 878 #define SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) \ 879 if (newp && newlen != len) \ 880 return (EINVAL); 881 882 #define SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, typ) \ 883 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, sizeof(typ)) 884 885 #define SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, len) \ 886 if (error == 0 && newp) \ 887 error = copyin(newp, valp, len); 888 889 #define SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, typ) \ 890 SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, sizeof(typ)) 891 892 #define SYSCTL_STRING_CORE(oldp, oldlenp, str) \ 893 if (oldlenp) { \ 894 len = strlen(str) + 1; \ 895 if (!oldp) \ 896 *oldlenp = len; \ 897 else { \ 898 if (*oldlenp < len) { \ 899 err2 = ENOMEM; \ 900 len = *oldlenp; \ 901 } else \ 902 *oldlenp = len; \ 903 error = copyout(str, oldp, len);\ 904 if (error == 0) \ 905 error = err2; \ 906 } \ 907 } 908 909 /* 910 * Validate parameters and get old / set new parameters 911 * for an integer-valued sysctl function. 912 */ 913 int 914 sysctl_int(void *oldp, size_t *oldlenp, void *newp, size_t newlen, int *valp) 915 { 916 int error = 0; 917 918 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 919 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, int) 920 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, int) 921 922 return (error); 923 } 924 925 926 /* 927 * As above, but read-only. 928 */ 929 int 930 sysctl_rdint(void *oldp, size_t *oldlenp, void *newp, int val) 931 { 932 int error = 0; 933 934 if (newp) 935 return (EPERM); 936 937 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, int) 938 939 return (error); 940 } 941 942 /* 943 * Validate parameters and get old / set new parameters 944 * for an quad-valued sysctl function. 945 */ 946 int 947 sysctl_quad(void *oldp, size_t *oldlenp, void *newp, size_t newlen, 948 quad_t *valp) 949 { 950 int error = 0; 951 952 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, quad_t) 953 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, quad_t) 954 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, quad_t) 955 956 return (error); 957 } 958 959 /* 960 * As above, but read-only. 961 */ 962 int 963 sysctl_rdquad(void *oldp, size_t *oldlenp, void *newp, quad_t val) 964 { 965 int error = 0; 966 967 if (newp) 968 return (EPERM); 969 970 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, quad_t) 971 972 return (error); 973 } 974 975 /* 976 * Validate parameters and get old / set new parameters 977 * for a string-valued sysctl function. 978 */ 979 int 980 sysctl_string(void *oldp, size_t *oldlenp, void *newp, size_t newlen, char *str, 981 int maxlen) 982 { 983 int len, error = 0, err2 = 0; 984 985 if (newp && newlen >= maxlen) 986 return (EINVAL); 987 988 SYSCTL_STRING_CORE(oldp, oldlenp, str); 989 990 if (error == 0 && newp) { 991 error = copyin(newp, str, newlen); 992 str[newlen] = 0; 993 } 994 return (error); 995 } 996 997 /* 998 * As above, but read-only. 999 */ 1000 int 1001 sysctl_rdstring(void *oldp, size_t *oldlenp, void *newp, const char *str) 1002 { 1003 int len, error = 0, err2 = 0; 1004 1005 if (newp) 1006 return (EPERM); 1007 1008 SYSCTL_STRING_CORE(oldp, oldlenp, str); 1009 1010 return (error); 1011 } 1012 1013 /* 1014 * Validate parameters and get old / set new parameters 1015 * for a structure oriented sysctl function. 1016 */ 1017 int 1018 sysctl_struct(void *oldp, size_t *oldlenp, void *newp, size_t newlen, void *sp, 1019 int len) 1020 { 1021 int error = 0; 1022 1023 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) 1024 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1025 SYSCTL_SCALAR_NEWPCOP_LEN(newp, sp, len) 1026 1027 return (error); 1028 } 1029 1030 /* 1031 * Validate parameters and get old parameters 1032 * for a structure oriented sysctl function. 1033 */ 1034 int 1035 sysctl_rdstruct(void *oldp, size_t *oldlenp, void *newp, const void *sp, 1036 int len) 1037 { 1038 int error = 0; 1039 1040 if (newp) 1041 return (EPERM); 1042 1043 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1044 1045 return (error); 1046 } 1047 1048 /* 1049 * As above, but can return a truncated result. 1050 */ 1051 int 1052 sysctl_rdminstruct(void *oldp, size_t *oldlenp, void *newp, const void *sp, 1053 int len) 1054 { 1055 int error = 0; 1056 1057 if (newp) 1058 return (EPERM); 1059 1060 len = min(*oldlenp, len); 1061 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1062 1063 return (error); 1064 } 1065 1066 /* 1067 * Get file structures. 1068 */ 1069 static int 1070 sysctl_file(void *vwhere, size_t *sizep) 1071 { 1072 int buflen, error; 1073 struct file *fp; 1074 char *start, *where; 1075 1076 start = where = vwhere; 1077 buflen = *sizep; 1078 if (where == NULL) { 1079 /* 1080 * overestimate by 10 files 1081 */ 1082 *sizep = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 1083 return (0); 1084 } 1085 1086 /* 1087 * first copyout filehead 1088 */ 1089 if (buflen < sizeof(filehead)) { 1090 *sizep = 0; 1091 return (0); 1092 } 1093 error = copyout((caddr_t)&filehead, where, sizeof(filehead)); 1094 if (error) 1095 return (error); 1096 buflen -= sizeof(filehead); 1097 where += sizeof(filehead); 1098 1099 /* 1100 * followed by an array of file structures 1101 */ 1102 for (fp = filehead.lh_first; fp != 0; fp = fp->f_list.le_next) { 1103 if (buflen < sizeof(struct file)) { 1104 *sizep = where - start; 1105 return (ENOMEM); 1106 } 1107 error = copyout((caddr_t)fp, where, sizeof(struct file)); 1108 if (error) 1109 return (error); 1110 buflen -= sizeof(struct file); 1111 where += sizeof(struct file); 1112 } 1113 *sizep = where - start; 1114 return (0); 1115 } 1116 1117 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1118 #define FILL_PERM(src, dst) do { \ 1119 (dst)._key = (src)._key; \ 1120 (dst).uid = (src).uid; \ 1121 (dst).gid = (src).gid; \ 1122 (dst).cuid = (src).cuid; \ 1123 (dst).cgid = (src).cgid; \ 1124 (dst).mode = (src).mode; \ 1125 (dst)._seq = (src)._seq; \ 1126 } while (0); 1127 #define FILL_MSG(src, dst) do { \ 1128 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1129 (dst).msg_qnum = (src).msg_qnum; \ 1130 (dst).msg_qbytes = (src).msg_qbytes; \ 1131 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1132 (dst).msg_lspid = (src).msg_lspid; \ 1133 (dst).msg_lrpid = (src).msg_lrpid; \ 1134 (dst).msg_stime = (src).msg_stime; \ 1135 (dst).msg_rtime = (src).msg_rtime; \ 1136 (dst).msg_ctime = (src).msg_ctime; \ 1137 } while (0) 1138 #define FILL_SEM(src, dst) do { \ 1139 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1140 (dst).sem_nsems = (src).sem_nsems; \ 1141 (dst).sem_otime = (src).sem_otime; \ 1142 (dst).sem_ctime = (src).sem_ctime; \ 1143 } while (0) 1144 #define FILL_SHM(src, dst) do { \ 1145 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1146 (dst).shm_segsz = (src).shm_segsz; \ 1147 (dst).shm_lpid = (src).shm_lpid; \ 1148 (dst).shm_cpid = (src).shm_cpid; \ 1149 (dst).shm_atime = (src).shm_atime; \ 1150 (dst).shm_dtime = (src).shm_dtime; \ 1151 (dst).shm_ctime = (src).shm_ctime; \ 1152 (dst).shm_nattch = (src).shm_nattch; \ 1153 } while (0) 1154 1155 static int 1156 sysctl_sysvipc(int *name, u_int namelen, void *where, size_t *sizep) 1157 { 1158 #ifdef SYSVMSG 1159 struct msg_sysctl_info *msgsi; 1160 #endif 1161 #ifdef SYSVSEM 1162 struct sem_sysctl_info *semsi; 1163 #endif 1164 #ifdef SYSVSHM 1165 struct shm_sysctl_info *shmsi; 1166 #endif 1167 size_t infosize, dssize, tsize, buflen; 1168 void *buf = NULL; 1169 char *start; 1170 int32_t nds; 1171 int i, error, ret; 1172 1173 if (namelen != 1) 1174 return (EINVAL); 1175 1176 start = where; 1177 buflen = *sizep; 1178 1179 switch (*name) { 1180 case KERN_SYSVIPC_MSG_INFO: 1181 #ifdef SYSVMSG 1182 infosize = sizeof(msgsi->msginfo); 1183 nds = msginfo.msgmni; 1184 dssize = sizeof(msgsi->msgids[0]); 1185 break; 1186 #else 1187 return (EINVAL); 1188 #endif 1189 case KERN_SYSVIPC_SEM_INFO: 1190 #ifdef SYSVSEM 1191 infosize = sizeof(semsi->seminfo); 1192 nds = seminfo.semmni; 1193 dssize = sizeof(semsi->semids[0]); 1194 break; 1195 #else 1196 return (EINVAL); 1197 #endif 1198 case KERN_SYSVIPC_SHM_INFO: 1199 #ifdef SYSVSHM 1200 infosize = sizeof(shmsi->shminfo); 1201 nds = shminfo.shmmni; 1202 dssize = sizeof(shmsi->shmids[0]); 1203 break; 1204 #else 1205 return (EINVAL); 1206 #endif 1207 default: 1208 return (EINVAL); 1209 } 1210 /* 1211 * Round infosize to 64 bit boundary if requesting more than just 1212 * the info structure or getting the total data size. 1213 */ 1214 if (where == NULL || *sizep > infosize) 1215 infosize = ((infosize + 7) / 8) * 8; 1216 tsize = infosize + nds * dssize; 1217 1218 /* Return just the total size required. */ 1219 if (where == NULL) { 1220 *sizep = tsize; 1221 return (0); 1222 } 1223 1224 /* Not enough room for even the info struct. */ 1225 if (buflen < infosize) { 1226 *sizep = 0; 1227 return (ENOMEM); 1228 } 1229 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1230 memset(buf, 0, min(tsize, buflen)); 1231 1232 switch (*name) { 1233 #ifdef SYSVMSG 1234 case KERN_SYSVIPC_MSG_INFO: 1235 msgsi = (struct msg_sysctl_info *)buf; 1236 msgsi->msginfo = msginfo; 1237 break; 1238 #endif 1239 #ifdef SYSVSEM 1240 case KERN_SYSVIPC_SEM_INFO: 1241 semsi = (struct sem_sysctl_info *)buf; 1242 semsi->seminfo = seminfo; 1243 break; 1244 #endif 1245 #ifdef SYSVSHM 1246 case KERN_SYSVIPC_SHM_INFO: 1247 shmsi = (struct shm_sysctl_info *)buf; 1248 shmsi->shminfo = shminfo; 1249 break; 1250 #endif 1251 } 1252 buflen -= infosize; 1253 1254 ret = 0; 1255 if (buflen > 0) { 1256 /* Fill in the IPC data structures. */ 1257 for (i = 0; i < nds; i++) { 1258 if (buflen < dssize) { 1259 ret = ENOMEM; 1260 break; 1261 } 1262 switch (*name) { 1263 #ifdef SYSVMSG 1264 case KERN_SYSVIPC_MSG_INFO: 1265 FILL_MSG(msqids[i], msgsi->msgids[i]); 1266 break; 1267 #endif 1268 #ifdef SYSVSEM 1269 case KERN_SYSVIPC_SEM_INFO: 1270 FILL_SEM(sema[i], semsi->semids[i]); 1271 break; 1272 #endif 1273 #ifdef SYSVSHM 1274 case KERN_SYSVIPC_SHM_INFO: 1275 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1276 break; 1277 #endif 1278 } 1279 buflen -= dssize; 1280 } 1281 } 1282 *sizep -= buflen; 1283 error = copyout(buf, start, *sizep); 1284 /* If copyout succeeded, use return code set earlier. */ 1285 if (error == 0) 1286 error = ret; 1287 if (buf) 1288 free(buf, M_TEMP); 1289 return (error); 1290 } 1291 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 1292 1293 static int 1294 sysctl_msgbuf(void *vwhere, size_t *sizep) 1295 { 1296 char *where = vwhere; 1297 size_t len, maxlen = *sizep; 1298 long beg, end; 1299 int error; 1300 1301 /* 1302 * deal with cases where the message buffer has 1303 * become corrupted. 1304 */ 1305 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1306 msgbufenabled = 0; 1307 return (ENXIO); 1308 } 1309 1310 if (where == NULL) { 1311 /* always return full buffer size */ 1312 *sizep = msgbufp->msg_bufs; 1313 return (0); 1314 } 1315 1316 error = 0; 1317 maxlen = min(msgbufp->msg_bufs, maxlen); 1318 1319 /* 1320 * First, copy from the write pointer to the end of 1321 * message buffer. 1322 */ 1323 beg = msgbufp->msg_bufx; 1324 end = msgbufp->msg_bufs; 1325 while (maxlen > 0) { 1326 len = min(end - beg, maxlen); 1327 if (len == 0) 1328 break; 1329 error = copyout(&msgbufp->msg_bufc[beg], where, len); 1330 if (error) 1331 break; 1332 where += len; 1333 maxlen -= len; 1334 1335 /* 1336 * ... then, copy from the beginning of message buffer to 1337 * the write pointer. 1338 */ 1339 beg = 0; 1340 end = msgbufp->msg_bufx; 1341 } 1342 return (error); 1343 } 1344 1345 /* 1346 * try over estimating by 5 procs 1347 */ 1348 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 1349 1350 static int 1351 sysctl_doeproc(int *name, u_int namelen, void *vwhere, size_t *sizep) 1352 { 1353 struct eproc eproc; 1354 struct kinfo_proc2 kproc2; 1355 struct kinfo_proc *dp; 1356 struct proc *p; 1357 const struct proclist_desc *pd; 1358 char *where, *dp2; 1359 int type, op, arg, elem_size, elem_count; 1360 int buflen, needed, error; 1361 1362 dp = vwhere; 1363 dp2 = where = vwhere; 1364 buflen = where != NULL ? *sizep : 0; 1365 error = needed = 0; 1366 type = name[0]; 1367 1368 if (type == KERN_PROC) { 1369 if (namelen != 3 && !(namelen == 2 && name[1] == KERN_PROC_ALL)) 1370 return (EINVAL); 1371 op = name[1]; 1372 if (op != KERN_PROC_ALL) 1373 arg = name[2]; 1374 } else { 1375 if (namelen != 5) 1376 return (EINVAL); 1377 op = name[1]; 1378 arg = name[2]; 1379 elem_size = name[3]; 1380 elem_count = name[4]; 1381 } 1382 1383 proclist_lock_read(); 1384 1385 pd = proclists; 1386 again: 1387 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1388 /* 1389 * Skip embryonic processes. 1390 */ 1391 if (p->p_stat == SIDL) 1392 continue; 1393 /* 1394 * TODO - make more efficient (see notes below). 1395 * do by session. 1396 */ 1397 switch (op) { 1398 1399 case KERN_PROC_PID: 1400 /* could do this with just a lookup */ 1401 if (p->p_pid != (pid_t)arg) 1402 continue; 1403 break; 1404 1405 case KERN_PROC_PGRP: 1406 /* could do this by traversing pgrp */ 1407 if (p->p_pgrp->pg_id != (pid_t)arg) 1408 continue; 1409 break; 1410 1411 case KERN_PROC_SESSION: 1412 if (p->p_session->s_sid != (pid_t)arg) 1413 continue; 1414 break; 1415 1416 case KERN_PROC_TTY: 1417 if (arg == KERN_PROC_TTY_REVOKE) { 1418 if ((p->p_flag & P_CONTROLT) == 0 || 1419 p->p_session->s_ttyp == NULL || 1420 p->p_session->s_ttyvp != NULL) 1421 continue; 1422 } else if ((p->p_flag & P_CONTROLT) == 0 || 1423 p->p_session->s_ttyp == NULL) { 1424 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1425 continue; 1426 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1427 continue; 1428 break; 1429 1430 case KERN_PROC_UID: 1431 if (p->p_ucred->cr_uid != (uid_t)arg) 1432 continue; 1433 break; 1434 1435 case KERN_PROC_RUID: 1436 if (p->p_cred->p_ruid != (uid_t)arg) 1437 continue; 1438 break; 1439 1440 case KERN_PROC_GID: 1441 if (p->p_ucred->cr_gid != (uid_t)arg) 1442 continue; 1443 break; 1444 1445 case KERN_PROC_RGID: 1446 if (p->p_cred->p_rgid != (uid_t)arg) 1447 continue; 1448 break; 1449 1450 case KERN_PROC_ALL: 1451 /* allow everything */ 1452 break; 1453 1454 default: 1455 error = EINVAL; 1456 goto cleanup; 1457 } 1458 if (type == KERN_PROC) { 1459 if (buflen >= sizeof(struct kinfo_proc)) { 1460 fill_eproc(p, &eproc); 1461 error = copyout((caddr_t)p, &dp->kp_proc, 1462 sizeof(struct proc)); 1463 if (error) 1464 goto cleanup; 1465 error = copyout((caddr_t)&eproc, &dp->kp_eproc, 1466 sizeof(eproc)); 1467 if (error) 1468 goto cleanup; 1469 dp++; 1470 buflen -= sizeof(struct kinfo_proc); 1471 } 1472 needed += sizeof(struct kinfo_proc); 1473 } else { /* KERN_PROC2 */ 1474 if (buflen >= elem_size && elem_count > 0) { 1475 fill_kproc2(p, &kproc2); 1476 /* 1477 * Copy out elem_size, but not larger than 1478 * the size of a struct kinfo_proc2. 1479 */ 1480 error = copyout(&kproc2, dp2, 1481 min(sizeof(kproc2), elem_size)); 1482 if (error) 1483 goto cleanup; 1484 dp2 += elem_size; 1485 buflen -= elem_size; 1486 elem_count--; 1487 } 1488 needed += elem_size; 1489 } 1490 } 1491 pd++; 1492 if (pd->pd_list != NULL) 1493 goto again; 1494 proclist_unlock_read(); 1495 1496 if (where != NULL) { 1497 if (type == KERN_PROC) 1498 *sizep = (caddr_t)dp - where; 1499 else 1500 *sizep = dp2 - where; 1501 if (needed > *sizep) 1502 return (ENOMEM); 1503 } else { 1504 needed += KERN_PROCSLOP; 1505 *sizep = needed; 1506 } 1507 return (0); 1508 cleanup: 1509 proclist_unlock_read(); 1510 return (error); 1511 } 1512 1513 /* 1514 * Fill in an eproc structure for the specified process. 1515 */ 1516 void 1517 fill_eproc(struct proc *p, struct eproc *ep) 1518 { 1519 struct tty *tp; 1520 1521 ep->e_paddr = p; 1522 ep->e_sess = p->p_session; 1523 ep->e_pcred = *p->p_cred; 1524 ep->e_ucred = *p->p_ucred; 1525 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1526 ep->e_vm.vm_rssize = 0; 1527 ep->e_vm.vm_tsize = 0; 1528 ep->e_vm.vm_dsize = 0; 1529 ep->e_vm.vm_ssize = 0; 1530 /* ep->e_vm.vm_pmap = XXX; */ 1531 } else { 1532 struct vmspace *vm = p->p_vmspace; 1533 1534 ep->e_vm.vm_rssize = vm_resident_count(vm); 1535 ep->e_vm.vm_tsize = vm->vm_tsize; 1536 ep->e_vm.vm_dsize = vm->vm_dsize; 1537 ep->e_vm.vm_ssize = vm->vm_ssize; 1538 } 1539 if (p->p_pptr) 1540 ep->e_ppid = p->p_pptr->p_pid; 1541 else 1542 ep->e_ppid = 0; 1543 ep->e_pgid = p->p_pgrp->pg_id; 1544 ep->e_sid = ep->e_sess->s_sid; 1545 ep->e_jobc = p->p_pgrp->pg_jobc; 1546 if ((p->p_flag & P_CONTROLT) && 1547 (tp = ep->e_sess->s_ttyp)) { 1548 ep->e_tdev = tp->t_dev; 1549 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1550 ep->e_tsess = tp->t_session; 1551 } else 1552 ep->e_tdev = NODEV; 1553 if (p->p_wmesg) 1554 strncpy(ep->e_wmesg, p->p_wmesg, WMESGLEN); 1555 ep->e_xsize = ep->e_xrssize = 0; 1556 ep->e_xccount = ep->e_xswrss = 0; 1557 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 1558 if (SESS_LEADER(p)) 1559 ep->e_flag |= EPROC_SLEADER; 1560 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 1561 } 1562 1563 /* 1564 * Fill in an eproc structure for the specified process. 1565 */ 1566 static void 1567 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 1568 { 1569 struct tty *tp; 1570 1571 memset(ki, 0, sizeof(*ki)); 1572 1573 ki->p_forw = PTRTOINT64(p->p_forw); 1574 ki->p_back = PTRTOINT64(p->p_back); 1575 ki->p_paddr = PTRTOINT64(p); 1576 1577 ki->p_addr = PTRTOINT64(p->p_addr); 1578 ki->p_fd = PTRTOINT64(p->p_fd); 1579 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 1580 ki->p_stats = PTRTOINT64(p->p_stats); 1581 ki->p_limit = PTRTOINT64(p->p_limit); 1582 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 1583 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 1584 ki->p_sess = PTRTOINT64(p->p_session); 1585 ki->p_tsess = 0; /* may be changed if controlling tty below */ 1586 ki->p_ru = PTRTOINT64(p->p_ru); 1587 1588 ki->p_eflag = 0; 1589 ki->p_exitsig = p->p_exitsig; 1590 ki->p_flag = p->p_flag; 1591 1592 ki->p_pid = p->p_pid; 1593 if (p->p_pptr) 1594 ki->p_ppid = p->p_pptr->p_pid; 1595 else 1596 ki->p_ppid = 0; 1597 ki->p_sid = p->p_session->s_sid; 1598 ki->p__pgid = p->p_pgrp->pg_id; 1599 1600 ki->p_tpgid = NO_PID; /* may be changed if controlling tty below */ 1601 1602 ki->p_uid = p->p_ucred->cr_uid; 1603 ki->p_ruid = p->p_cred->p_ruid; 1604 ki->p_gid = p->p_ucred->cr_gid; 1605 ki->p_rgid = p->p_cred->p_rgid; 1606 1607 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 1608 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 1609 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 1610 1611 ki->p_jobc = p->p_pgrp->pg_jobc; 1612 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 1613 ki->p_tdev = tp->t_dev; 1614 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1615 ki->p_tsess = PTRTOINT64(tp->t_session); 1616 } else { 1617 ki->p_tdev = NODEV; 1618 } 1619 1620 ki->p_estcpu = p->p_estcpu; 1621 ki->p_rtime_sec = p->p_rtime.tv_sec; 1622 ki->p_rtime_usec = p->p_rtime.tv_usec; 1623 ki->p_cpticks = p->p_cpticks; 1624 ki->p_pctcpu = p->p_pctcpu; 1625 ki->p_swtime = p->p_swtime; 1626 ki->p_slptime = p->p_slptime; 1627 if (p->p_stat == SONPROC) { 1628 KDASSERT(p->p_cpu != NULL); 1629 ki->p_schedflags = p->p_cpu->ci_schedstate.spc_flags; 1630 } else 1631 ki->p_schedflags = 0; 1632 1633 ki->p_uticks = p->p_uticks; 1634 ki->p_sticks = p->p_sticks; 1635 ki->p_iticks = p->p_iticks; 1636 1637 ki->p_tracep = PTRTOINT64(p->p_tracep); 1638 ki->p_traceflag = p->p_traceflag; 1639 1640 ki->p_holdcnt = p->p_holdcnt; 1641 1642 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 1643 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 1644 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 1645 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 1646 1647 ki->p_stat = p->p_stat; 1648 ki->p_priority = p->p_priority; 1649 ki->p_usrpri = p->p_usrpri; 1650 ki->p_nice = p->p_nice; 1651 1652 ki->p_xstat = p->p_xstat; 1653 ki->p_acflag = p->p_acflag; 1654 1655 strncpy(ki->p_comm, p->p_comm, 1656 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 1657 1658 if (p->p_wmesg) 1659 strncpy(ki->p_wmesg, p->p_wmesg, sizeof(ki->p_wmesg)); 1660 ki->p_wchan = PTRTOINT64(p->p_wchan); 1661 1662 strncpy(ki->p_login, p->p_session->s_login, sizeof(ki->p_login)); 1663 1664 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1665 ki->p_vm_rssize = 0; 1666 ki->p_vm_tsize = 0; 1667 ki->p_vm_dsize = 0; 1668 ki->p_vm_ssize = 0; 1669 } else { 1670 struct vmspace *vm = p->p_vmspace; 1671 1672 ki->p_vm_rssize = vm_resident_count(vm); 1673 ki->p_vm_tsize = vm->vm_tsize; 1674 ki->p_vm_dsize = vm->vm_dsize; 1675 ki->p_vm_ssize = vm->vm_ssize; 1676 } 1677 1678 if (p->p_session->s_ttyvp) 1679 ki->p_eflag |= EPROC_CTTY; 1680 if (SESS_LEADER(p)) 1681 ki->p_eflag |= EPROC_SLEADER; 1682 1683 /* XXX Is this double check necessary? */ 1684 if ((p->p_flag & P_INMEM) == 0 || P_ZOMBIE(p)) { 1685 ki->p_uvalid = 0; 1686 } else { 1687 ki->p_uvalid = 1; 1688 1689 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 1690 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 1691 1692 ki->p_uutime_sec = p->p_stats->p_ru.ru_utime.tv_sec; 1693 ki->p_uutime_usec = p->p_stats->p_ru.ru_utime.tv_usec; 1694 ki->p_ustime_sec = p->p_stats->p_ru.ru_stime.tv_sec; 1695 ki->p_ustime_usec = p->p_stats->p_ru.ru_stime.tv_usec; 1696 1697 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 1698 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 1699 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 1700 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 1701 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 1702 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 1703 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 1704 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 1705 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 1706 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 1707 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 1708 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 1709 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 1710 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 1711 1712 ki->p_uctime_sec = p->p_stats->p_cru.ru_utime.tv_sec + 1713 p->p_stats->p_cru.ru_stime.tv_sec; 1714 ki->p_uctime_usec = p->p_stats->p_cru.ru_utime.tv_usec + 1715 p->p_stats->p_cru.ru_stime.tv_usec; 1716 } 1717 #ifdef MULTIPROCESSOR 1718 if (p->p_cpu != NULL) 1719 ki->p_cpuid = p->p_cpu->ci_cpuid; 1720 else 1721 #endif 1722 ki->p_cpuid = KI_NOCPU; 1723 } 1724 1725 int 1726 sysctl_procargs(int *name, u_int namelen, void *where, size_t *sizep, 1727 struct proc *up) 1728 { 1729 struct ps_strings pss; 1730 struct proc *p; 1731 size_t len, upper_bound, xlen; 1732 struct uio auio; 1733 struct iovec aiov; 1734 vaddr_t argv; 1735 pid_t pid; 1736 int nargv, type, error, i; 1737 char *arg; 1738 char *tmp; 1739 1740 if (namelen != 2) 1741 return (EINVAL); 1742 pid = name[0]; 1743 type = name[1]; 1744 1745 switch (type) { 1746 case KERN_PROC_ARGV: 1747 case KERN_PROC_NARGV: 1748 case KERN_PROC_ENV: 1749 case KERN_PROC_NENV: 1750 /* ok */ 1751 break; 1752 default: 1753 return (EINVAL); 1754 } 1755 1756 /* check pid */ 1757 if ((p = pfind(pid)) == NULL) 1758 return (EINVAL); 1759 1760 /* only root or same user change look at the environment */ 1761 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1762 if (up->p_ucred->cr_uid != 0) { 1763 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1764 up->p_cred->p_ruid != p->p_cred->p_svuid) 1765 return (EPERM); 1766 } 1767 } 1768 1769 if (sizep != NULL && where == NULL) { 1770 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1771 *sizep = sizeof (int); 1772 else 1773 *sizep = ARG_MAX; /* XXX XXX XXX */ 1774 return (0); 1775 } 1776 if (where == NULL || sizep == NULL) 1777 return (EINVAL); 1778 1779 /* 1780 * Zombies don't have a stack, so we can't read their psstrings. 1781 * System processes also don't have a user stack. 1782 */ 1783 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1784 return (EINVAL); 1785 1786 /* 1787 * Lock the process down in memory. 1788 */ 1789 /* XXXCDC: how should locking work here? */ 1790 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1791 return (EFAULT); 1792 p->p_vmspace->vm_refcnt++; /* XXX */ 1793 1794 /* 1795 * Allocate a temporary buffer to hold the arguments. 1796 */ 1797 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1798 1799 /* 1800 * Read in the ps_strings structure. 1801 */ 1802 aiov.iov_base = &pss; 1803 aiov.iov_len = sizeof(pss); 1804 auio.uio_iov = &aiov; 1805 auio.uio_iovcnt = 1; 1806 auio.uio_offset = (vaddr_t)p->p_psstr; 1807 auio.uio_resid = sizeof(pss); 1808 auio.uio_segflg = UIO_SYSSPACE; 1809 auio.uio_rw = UIO_READ; 1810 auio.uio_procp = NULL; 1811 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1812 if (error) 1813 goto done; 1814 1815 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1816 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1817 else 1818 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1819 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1820 error = copyout(&nargv, where, sizeof(nargv)); 1821 *sizep = sizeof(nargv); 1822 goto done; 1823 } 1824 /* 1825 * Now read the address of the argument vector. 1826 */ 1827 switch (type) { 1828 case KERN_PROC_ARGV: 1829 /* XXX compat32 stuff here */ 1830 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1831 break; 1832 case KERN_PROC_ENV: 1833 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1834 break; 1835 default: 1836 return (EINVAL); 1837 } 1838 auio.uio_offset = (off_t)(long)tmp; 1839 aiov.iov_base = &argv; 1840 aiov.iov_len = sizeof(argv); 1841 auio.uio_iov = &aiov; 1842 auio.uio_iovcnt = 1; 1843 auio.uio_resid = sizeof(argv); 1844 auio.uio_segflg = UIO_SYSSPACE; 1845 auio.uio_rw = UIO_READ; 1846 auio.uio_procp = NULL; 1847 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1848 if (error) 1849 goto done; 1850 1851 /* 1852 * Now copy in the actual argument vector, one page at a time, 1853 * since we don't know how long the vector is (though, we do 1854 * know how many NUL-terminated strings are in the vector). 1855 */ 1856 len = 0; 1857 upper_bound = *sizep; 1858 for (; nargv != 0 && len < upper_bound; len += xlen) { 1859 aiov.iov_base = arg; 1860 aiov.iov_len = PAGE_SIZE; 1861 auio.uio_iov = &aiov; 1862 auio.uio_iovcnt = 1; 1863 auio.uio_offset = argv + len; 1864 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1865 auio.uio_resid = xlen; 1866 auio.uio_segflg = UIO_SYSSPACE; 1867 auio.uio_rw = UIO_READ; 1868 auio.uio_procp = NULL; 1869 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1870 if (error) 1871 goto done; 1872 1873 for (i = 0; i < xlen && nargv != 0; i++) { 1874 if (arg[i] == '\0') 1875 nargv--; /* one full string */ 1876 } 1877 1878 /* make sure we don't copyout past the end of the user's buffer */ 1879 if (len + i > upper_bound) 1880 i = upper_bound - len; 1881 1882 error = copyout(arg, (char *)where + len, i); 1883 if (error) 1884 break; 1885 1886 if (nargv == 0) { 1887 len += i; 1888 break; 1889 } 1890 } 1891 *sizep = len; 1892 1893 done: 1894 uvmspace_free(p->p_vmspace); 1895 1896 free(arg, M_TEMP); 1897 return (error); 1898 } 1899 1900 #if NPTY > 0 1901 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1902 1903 /* 1904 * Validate parameters and get old / set new parameters 1905 * for pty sysctl function. 1906 */ 1907 static int 1908 sysctl_pty(void *oldp, size_t *oldlenp, void *newp, size_t newlen) 1909 { 1910 int error = 0; 1911 int oldmax = 0, newmax = 0; 1912 1913 /* get current value of maxptys */ 1914 oldmax = pty_maxptys(0, 0); 1915 1916 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &oldmax, int) 1917 1918 if (!error && newp) { 1919 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 1920 SYSCTL_SCALAR_NEWPCOP_TYP(newp, &newmax, int) 1921 1922 if (newmax != pty_maxptys(newmax, (newp != NULL))) 1923 return (EINVAL); 1924 1925 } 1926 1927 return (error); 1928 } 1929 #endif /* NPTY > 0 */ 1930 1931 static int 1932 sysctl_dotkstat(name, namelen, where, sizep, newp) 1933 int *name; 1934 u_int namelen; 1935 void *where; 1936 size_t *sizep; 1937 void *newp; 1938 { 1939 /* all sysctl names at this level are terminal */ 1940 if (namelen != 1) 1941 return (ENOTDIR); /* overloaded */ 1942 1943 switch (name[0]) { 1944 case KERN_TKSTAT_NIN: 1945 return (sysctl_rdquad(where, sizep, newp, tk_nin)); 1946 case KERN_TKSTAT_NOUT: 1947 return (sysctl_rdquad(where, sizep, newp, tk_nout)); 1948 case KERN_TKSTAT_CANCC: 1949 return (sysctl_rdquad(where, sizep, newp, tk_cancc)); 1950 case KERN_TKSTAT_RAWCC: 1951 return (sysctl_rdquad(where, sizep, newp, tk_rawcc)); 1952 default: 1953 return (EOPNOTSUPP); 1954 } 1955 } 1956
Indexes created Tue Sep 30 06:09:59 GMT 2025