kern_sysctl.c revision 1.108.4.2
1 /* $NetBSD: kern_sysctl.c,v 1.108.4.2 2003/08/26 14:38:01 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 1.108.4.2 2003/08/26 14:38:01 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 size_t *oldlenp; 155 156 /* 157 * all top-level sysctl names are non-terminal 158 */ 159 if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 2) 160 return (EINVAL); 161 error = copyin(SCARG(uap, name), &name, 162 SCARG(uap, namelen) * sizeof(int)); 163 if (error) 164 return (error); 165 166 /* 167 * For all but CTL_PROC, must be root to change a value. 168 * For CTL_PROC, must be root, or owner of the proc (and not suid), 169 * this is checked in proc_sysctl() (once we know the targer proc). 170 */ 171 if (SCARG(uap, new) != NULL && name[0] != CTL_PROC && 172 (error = suser(p->p_ucred, &p->p_acflag))) 173 return error; 174 175 switch (name[0]) { 176 case CTL_KERN: 177 fn = kern_sysctl; 178 break; 179 case CTL_HW: 180 fn = hw_sysctl; 181 break; 182 case CTL_VM: 183 fn = uvm_sysctl; 184 break; 185 case CTL_NET: 186 fn = net_sysctl; 187 break; 188 case CTL_VFS: 189 fn = vfs_sysctl; 190 break; 191 case CTL_MACHDEP: 192 fn = cpu_sysctl; 193 break; 194 #ifdef DEBUG 195 case CTL_DEBUG: 196 fn = debug_sysctl; 197 break; 198 #endif 199 #ifdef DDB 200 case CTL_DDB: 201 fn = ddb_sysctl; 202 break; 203 #endif 204 case CTL_PROC: 205 fn = proc_sysctl; 206 break; 207 208 case CTL_EMUL: 209 fn = emul_sysctl; 210 break; 211 default: 212 return (EOPNOTSUPP); 213 } 214 215 /* 216 * XXX Hey, we wire `old', but what about `new'? 217 */ 218 219 oldlenp = SCARG(uap, oldlenp); 220 if (oldlenp) { 221 if ((error = copyin(oldlenp, &oldlen, sizeof(oldlen)))) 222 return (error); 223 oldlenp = &oldlen; 224 } 225 if (SCARG(uap, old) != NULL) { 226 error = lockmgr(&sysctl_memlock, LK_EXCLUSIVE, NULL); 227 if (error) 228 return (error); 229 error = uvm_vslock(p, SCARG(uap, old), oldlen, VM_PROT_WRITE); 230 if (error) { 231 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 232 return error; 233 } 234 savelen = oldlen; 235 } 236 error = (*fn)(name + 1, SCARG(uap, namelen) - 1, SCARG(uap, old), 237 oldlenp, SCARG(uap, new), SCARG(uap, newlen), p); 238 if (SCARG(uap, old) != NULL) { 239 uvm_vsunlock(p, SCARG(uap, old), savelen); 240 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 241 } 242 if (error) 243 return (error); 244 if (SCARG(uap, oldlenp)) 245 error = copyout(&oldlen, SCARG(uap, oldlenp), sizeof(oldlen)); 246 return (error); 247 } 248 249 /* 250 * Attributes stored in the kernel. 251 */ 252 char hostname[MAXHOSTNAMELEN]; 253 int hostnamelen; 254 255 char domainname[MAXHOSTNAMELEN]; 256 int domainnamelen; 257 258 long hostid; 259 260 #ifdef INSECURE 261 int securelevel = -1; 262 #else 263 int securelevel = 0; 264 #endif 265 266 #ifndef DEFCORENAME 267 #define DEFCORENAME "%n.core" 268 #endif 269 char defcorename[MAXPATHLEN] = DEFCORENAME; 270 int defcorenamelen = sizeof(DEFCORENAME); 271 272 extern int kern_logsigexit; 273 extern fixpt_t ccpu; 274 275 #ifndef MULTIPROCESSOR 276 #define sysctl_ncpus() 1 277 #endif 278 279 #ifdef MULTIPROCESSOR 280 281 #ifndef CPU_INFO_FOREACH 282 #define CPU_INFO_ITERATOR int 283 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 284 #endif 285 286 static int 287 sysctl_docptime(void *oldp, size_t *oldlenp, void *newp) 288 { 289 u_int64_t cp_time[CPUSTATES]; 290 int i; 291 struct cpu_info *ci; 292 CPU_INFO_ITERATOR cii; 293 294 for (i=0; i<CPUSTATES; i++) 295 cp_time[i] = 0; 296 297 for (CPU_INFO_FOREACH(cii, ci)) { 298 for (i=0; i<CPUSTATES; i++) 299 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 300 } 301 return (sysctl_rdstruct(oldp, oldlenp, newp, 302 cp_time, sizeof(cp_time))); 303 } 304 305 static int 306 sysctl_ncpus(void) 307 { 308 struct cpu_info *ci; 309 CPU_INFO_ITERATOR cii; 310 311 int ncpus = 0; 312 for (CPU_INFO_FOREACH(cii, ci)) 313 ncpus++; 314 return ncpus; 315 } 316 317 #endif 318 319 /* 320 * kernel related system variables. 321 */ 322 int 323 kern_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 324 void *newp, size_t newlen, struct proc *p) 325 { 326 int error, level, inthostid; 327 int old_autonicetime; 328 int old_vnodes; 329 dev_t consdev; 330 331 /* All sysctl names at this level, except for a few, are terminal. */ 332 switch (name[0]) { 333 case KERN_PROC: 334 case KERN_PROC2: 335 case KERN_PROF: 336 case KERN_MBUF: 337 case KERN_PROC_ARGS: 338 case KERN_SYSVIPC_INFO: 339 case KERN_PIPE: 340 case KERN_TKSTAT: 341 /* Not terminal. */ 342 break; 343 default: 344 if (namelen != 1) 345 return (ENOTDIR); /* overloaded */ 346 } 347 348 switch (name[0]) { 349 case KERN_OSTYPE: 350 return (sysctl_rdstring(oldp, oldlenp, newp, ostype)); 351 case KERN_OSRELEASE: 352 return (sysctl_rdstring(oldp, oldlenp, newp, osrelease)); 353 case KERN_OSREV: 354 return (sysctl_rdint(oldp, oldlenp, newp, __NetBSD_Version__)); 355 case KERN_VERSION: 356 return (sysctl_rdstring(oldp, oldlenp, newp, version)); 357 case KERN_MAXVNODES: 358 old_vnodes = desiredvnodes; 359 error = sysctl_int(oldp, oldlenp, newp, newlen, &desiredvnodes); 360 if (newp && !error) { 361 if (old_vnodes > desiredvnodes) { 362 desiredvnodes = old_vnodes; 363 return (EINVAL); 364 } 365 vfs_reinit(); 366 nchreinit(); 367 } 368 return (error); 369 case KERN_MAXPROC: 370 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxproc)); 371 case KERN_MAXFILES: 372 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxfiles)); 373 case KERN_ARGMAX: 374 return (sysctl_rdint(oldp, oldlenp, newp, ARG_MAX)); 375 case KERN_SECURELVL: 376 level = securelevel; 377 if ((error = sysctl_int(oldp, oldlenp, newp, newlen, &level)) || 378 newp == NULL) 379 return (error); 380 if (level < securelevel && p->p_pid != 1) 381 return (EPERM); 382 securelevel = level; 383 return (0); 384 case KERN_HOSTNAME: 385 error = sysctl_string(oldp, oldlenp, newp, newlen, 386 hostname, sizeof(hostname)); 387 if (newp && !error) 388 hostnamelen = newlen; 389 return (error); 390 case KERN_DOMAINNAME: 391 error = sysctl_string(oldp, oldlenp, newp, newlen, 392 domainname, sizeof(domainname)); 393 if (newp && !error) 394 domainnamelen = newlen; 395 return (error); 396 case KERN_HOSTID: 397 inthostid = hostid; /* XXX assumes sizeof long <= sizeof int */ 398 error = sysctl_int(oldp, oldlenp, newp, newlen, &inthostid); 399 if (newp && !error) 400 hostid = inthostid; 401 return (error); 402 case KERN_CLOCKRATE: 403 return (sysctl_clockrate(oldp, oldlenp)); 404 case KERN_BOOTTIME: 405 return (sysctl_rdstruct(oldp, oldlenp, newp, &boottime, 406 sizeof(struct timeval))); 407 case KERN_VNODE: 408 return (sysctl_vnode(oldp, oldlenp, p)); 409 case KERN_PROC: 410 case KERN_PROC2: 411 return (sysctl_doeproc(name, namelen, oldp, oldlenp)); 412 case KERN_PROC_ARGS: 413 return (sysctl_procargs(name + 1, namelen - 1, 414 oldp, oldlenp, p)); 415 case KERN_FILE: 416 return (sysctl_file(oldp, oldlenp)); 417 #ifdef GPROF 418 case KERN_PROF: 419 return (sysctl_doprof(name + 1, namelen - 1, oldp, oldlenp, 420 newp, newlen)); 421 #endif 422 case KERN_POSIX1: 423 return (sysctl_rdint(oldp, oldlenp, newp, _POSIX_VERSION)); 424 case KERN_NGROUPS: 425 return (sysctl_rdint(oldp, oldlenp, newp, NGROUPS_MAX)); 426 case KERN_JOB_CONTROL: 427 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 428 case KERN_SAVED_IDS: 429 #ifdef _POSIX_SAVED_IDS 430 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 431 #else 432 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 433 #endif 434 case KERN_MAXPARTITIONS: 435 return (sysctl_rdint(oldp, oldlenp, newp, MAXPARTITIONS)); 436 case KERN_RAWPARTITION: 437 return (sysctl_rdint(oldp, oldlenp, newp, RAW_PART)); 438 #ifdef NTP 439 case KERN_NTPTIME: 440 return (sysctl_ntptime(oldp, oldlenp)); 441 #endif 442 case KERN_AUTONICETIME: 443 old_autonicetime = autonicetime; 444 error = sysctl_int(oldp, oldlenp, newp, newlen, &autonicetime); 445 if (autonicetime < 0) 446 autonicetime = old_autonicetime; 447 return (error); 448 case KERN_AUTONICEVAL: 449 error = sysctl_int(oldp, oldlenp, newp, newlen, &autoniceval); 450 if (autoniceval < PRIO_MIN) 451 autoniceval = PRIO_MIN; 452 if (autoniceval > PRIO_MAX) 453 autoniceval = PRIO_MAX; 454 return (error); 455 case KERN_RTC_OFFSET: 456 return (sysctl_rdint(oldp, oldlenp, newp, rtc_offset)); 457 case KERN_ROOT_DEVICE: 458 return (sysctl_rdstring(oldp, oldlenp, newp, 459 root_device->dv_xname)); 460 case KERN_MSGBUFSIZE: 461 /* 462 * deal with cases where the message buffer has 463 * become corrupted. 464 */ 465 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 466 msgbufenabled = 0; 467 return (ENXIO); 468 } 469 return (sysctl_rdint(oldp, oldlenp, newp, msgbufp->msg_bufs)); 470 case KERN_FSYNC: 471 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 472 case KERN_SYSVMSG: 473 #ifdef SYSVMSG 474 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 475 #else 476 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 477 #endif 478 case KERN_SYSVSEM: 479 #ifdef SYSVSEM 480 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 481 #else 482 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 483 #endif 484 case KERN_SYSVSHM: 485 #ifdef SYSVSHM 486 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 487 #else 488 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 489 #endif 490 case KERN_DEFCORENAME: 491 if (newp && newlen < 1) 492 return (EINVAL); 493 error = sysctl_string(oldp, oldlenp, newp, newlen, 494 defcorename, sizeof(defcorename)); 495 if (newp && !error) 496 defcorenamelen = newlen; 497 return (error); 498 case KERN_SYNCHRONIZED_IO: 499 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 500 case KERN_IOV_MAX: 501 return (sysctl_rdint(oldp, oldlenp, newp, IOV_MAX)); 502 case KERN_MBUF: 503 return (sysctl_dombuf(name + 1, namelen - 1, oldp, oldlenp, 504 newp, newlen)); 505 case KERN_MAPPED_FILES: 506 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 507 case KERN_MEMLOCK: 508 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 509 case KERN_MEMLOCK_RANGE: 510 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 511 case KERN_MEMORY_PROTECTION: 512 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 513 case KERN_LOGIN_NAME_MAX: 514 return (sysctl_rdint(oldp, oldlenp, newp, LOGIN_NAME_MAX)); 515 case KERN_LOGSIGEXIT: 516 return (sysctl_int(oldp, oldlenp, newp, newlen, 517 &kern_logsigexit)); 518 case KERN_FSCALE: 519 return (sysctl_rdint(oldp, oldlenp, newp, FSCALE)); 520 case KERN_CCPU: 521 return (sysctl_rdint(oldp, oldlenp, newp, ccpu)); 522 case KERN_CP_TIME: 523 #ifndef MULTIPROCESSOR 524 return (sysctl_rdstruct(oldp, oldlenp, newp, 525 curcpu()->ci_schedstate.spc_cp_time, 526 sizeof(curcpu()->ci_schedstate.spc_cp_time))); 527 #else 528 return (sysctl_docptime(oldp, oldlenp, newp)); 529 #endif 530 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 531 case KERN_SYSVIPC_INFO: 532 return (sysctl_sysvipc(name + 1, namelen - 1, oldp, oldlenp)); 533 #endif 534 case KERN_MSGBUF: 535 return (sysctl_msgbuf(oldp, oldlenp)); 536 case KERN_CONSDEV: 537 if (cn_tab != NULL) 538 consdev = cn_tab->cn_dev; 539 else 540 consdev = NODEV; 541 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 542 sizeof consdev)); 543 #if NPTY > 0 544 case KERN_MAXPTYS: 545 return sysctl_pty(oldp, oldlenp, newp, newlen); 546 #endif 547 #ifndef PIPE_SOCKETPAIR 548 case KERN_PIPE: 549 return (sysctl_dopipe(name + 1, namelen - 1, oldp, oldlenp, 550 newp, newlen)); 551 #endif 552 case KERN_MAXPHYS: 553 return (sysctl_rdint(oldp, oldlenp, newp, MAXPHYS)); 554 case KERN_SBMAX: 555 { 556 int new_sbmax = sb_max; 557 558 error = sysctl_int(oldp, oldlenp, newp, newlen, &new_sbmax); 559 if (newp && !error) { 560 if (new_sbmax < (16 * 1024)) /* sanity */ 561 return (EINVAL); 562 sb_max = new_sbmax; 563 } 564 return (error); 565 } 566 case KERN_TKSTAT: 567 return (sysctl_dotkstat(name + 1, namelen - 1, oldp, oldlenp, 568 newp)); 569 case KERN_MONOTONIC_CLOCK: /* XXX _POSIX_VERSION */ 570 return (sysctl_rdint(oldp, oldlenp, newp, 200112)); 571 default: 572 return (EOPNOTSUPP); 573 } 574 /* NOTREACHED */ 575 } 576 577 /* 578 * hardware related system variables. 579 */ 580 int 581 hw_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 582 void *newp, size_t newlen, struct proc *p) 583 { 584 585 /* All sysctl names at this level, except for a few, are terminal. */ 586 switch (name[0]) { 587 case HW_DISKSTATS: 588 /* Not terminal. */ 589 break; 590 default: 591 if (namelen != 1) 592 return (ENOTDIR); /* overloaded */ 593 } 594 595 switch (name[0]) { 596 case HW_MACHINE: 597 return (sysctl_rdstring(oldp, oldlenp, newp, machine)); 598 case HW_MACHINE_ARCH: 599 return (sysctl_rdstring(oldp, oldlenp, newp, machine_arch)); 600 case HW_MODEL: 601 return (sysctl_rdstring(oldp, oldlenp, newp, cpu_model)); 602 case HW_NCPU: 603 return (sysctl_rdint(oldp, oldlenp, newp, sysctl_ncpus())); 604 case HW_BYTEORDER: 605 return (sysctl_rdint(oldp, oldlenp, newp, BYTE_ORDER)); 606 case HW_PHYSMEM: 607 return (sysctl_rdint(oldp, oldlenp, newp, ctob(physmem))); 608 case HW_USERMEM: 609 return (sysctl_rdint(oldp, oldlenp, newp, 610 ctob(physmem - uvmexp.wired))); 611 case HW_PAGESIZE: 612 return (sysctl_rdint(oldp, oldlenp, newp, PAGE_SIZE)); 613 case HW_ALIGNBYTES: 614 return (sysctl_rdint(oldp, oldlenp, newp, ALIGNBYTES)); 615 case HW_DISKNAMES: 616 return (sysctl_disknames(oldp, oldlenp)); 617 case HW_DISKSTATS: 618 return (sysctl_diskstats(name + 1, namelen - 1, oldp, oldlenp)); 619 case HW_CNMAGIC: { 620 char magic[CNS_LEN]; 621 int error; 622 623 if (oldp) 624 cn_get_magic(magic, CNS_LEN); 625 error = sysctl_string(oldp, oldlenp, newp, newlen, 626 magic, sizeof(magic)); 627 if (newp && !error) { 628 error = cn_set_magic(magic); 629 } 630 return (error); 631 } 632 default: 633 return (EOPNOTSUPP); 634 } 635 /* NOTREACHED */ 636 } 637 638 #ifdef DEBUG 639 /* 640 * Debugging related system variables. 641 */ 642 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 643 struct ctldebug debug5, debug6, debug7, debug8, debug9; 644 struct ctldebug debug10, debug11, debug12, debug13, debug14; 645 struct ctldebug debug15, debug16, debug17, debug18, debug19; 646 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 647 &debug0, &debug1, &debug2, &debug3, &debug4, 648 &debug5, &debug6, &debug7, &debug8, &debug9, 649 &debug10, &debug11, &debug12, &debug13, &debug14, 650 &debug15, &debug16, &debug17, &debug18, &debug19, 651 }; 652 653 int 654 debug_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 655 void *newp, size_t newlen, struct proc *p) 656 { 657 struct ctldebug *cdp; 658 659 /* all sysctl names at this level are name and field */ 660 if (namelen != 2) 661 return (ENOTDIR); /* overloaded */ 662 if (name[0] >= CTL_DEBUG_MAXID) 663 return (EOPNOTSUPP); 664 cdp = debugvars[name[0]]; 665 if (cdp->debugname == 0) 666 return (EOPNOTSUPP); 667 switch (name[1]) { 668 case CTL_DEBUG_NAME: 669 return (sysctl_rdstring(oldp, oldlenp, newp, cdp->debugname)); 670 case CTL_DEBUG_VALUE: 671 return (sysctl_int(oldp, oldlenp, newp, newlen, cdp->debugvar)); 672 default: 673 return (EOPNOTSUPP); 674 } 675 /* NOTREACHED */ 676 } 677 #endif /* DEBUG */ 678 679 int 680 proc_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 681 void *newp, size_t newlen, struct proc *p) 682 { 683 struct proc *ptmp = NULL; 684 int error = 0; 685 struct rlimit alim; 686 struct plimit *newplim; 687 char *tmps = NULL; 688 int i, curlen, len; 689 690 if (namelen < 2) 691 return EINVAL; 692 693 if (name[0] == PROC_CURPROC) { 694 ptmp = p; 695 } else if ((ptmp = pfind((pid_t)name[0])) == NULL) { 696 return (ESRCH); 697 } else { 698 if (p->p_ucred->cr_uid != 0) { 699 if(p->p_cred->p_ruid != ptmp->p_cred->p_ruid || 700 p->p_cred->p_ruid != ptmp->p_cred->p_svuid) 701 return EPERM; 702 if (ptmp->p_cred->p_rgid != ptmp->p_cred->p_svgid) 703 return EPERM; /* sgid proc */ 704 for (i = 0; i < p->p_ucred->cr_ngroups; i++) { 705 if (p->p_ucred->cr_groups[i] == 706 ptmp->p_cred->p_rgid) 707 break; 708 } 709 if (i == p->p_ucred->cr_ngroups) 710 return EPERM; 711 } 712 } 713 if (name[1] == PROC_PID_CORENAME) { 714 if (namelen != 2) 715 return EINVAL; 716 /* 717 * Can't use sysctl_string() here because we may malloc a new 718 * area during the process, so we have to do it by hand. 719 */ 720 curlen = strlen(ptmp->p_limit->pl_corename) + 1; 721 if (oldlenp && *oldlenp < curlen) { 722 if (!oldp) 723 *oldlenp = curlen; 724 return (ENOMEM); 725 } 726 if (newp) { 727 if (securelevel > 2) 728 return EPERM; 729 if (newlen > MAXPATHLEN) 730 return ENAMETOOLONG; 731 tmps = malloc(newlen + 1, M_TEMP, M_WAITOK); 732 if (tmps == NULL) 733 return ENOMEM; 734 error = copyin(newp, tmps, newlen + 1); 735 tmps[newlen] = '\0'; 736 if (error) 737 goto cleanup; 738 /* Enforce to be either 'core' for end with '.core' */ 739 if (newlen < 4) { /* c.o.r.e */ 740 error = EINVAL; 741 goto cleanup; 742 } 743 len = newlen - 4; 744 if (len > 0) { 745 if (tmps[len - 1] != '.' && 746 tmps[len - 1] != '/') { 747 error = EINVAL; 748 goto cleanup; 749 } 750 } 751 if (strcmp(&tmps[len], "core") != 0) { 752 error = EINVAL; 753 goto cleanup; 754 } 755 } 756 if (oldp && oldlenp) { 757 *oldlenp = curlen; 758 error = copyout(ptmp->p_limit->pl_corename, oldp, 759 curlen); 760 } 761 if (newp && error == 0) { 762 /* if the 2 strings are identical, don't limcopy() */ 763 if (strcmp(tmps, ptmp->p_limit->pl_corename) == 0) { 764 error = 0; 765 goto cleanup; 766 } 767 if (ptmp->p_limit->p_refcnt > 1 && 768 (ptmp->p_limit->p_lflags & PL_SHAREMOD) == 0) { 769 newplim = limcopy(ptmp->p_limit); 770 limfree(ptmp->p_limit); 771 ptmp->p_limit = newplim; 772 } 773 if (ptmp->p_limit->pl_corename != defcorename) { 774 free(ptmp->p_limit->pl_corename, M_TEMP); 775 } 776 ptmp->p_limit->pl_corename = tmps; 777 return (0); 778 } 779 cleanup: 780 if (tmps) 781 free(tmps, M_TEMP); 782 return (error); 783 } 784 if (name[1] == PROC_PID_LIMIT) { 785 if (namelen != 4 || name[2] < 1 || 786 name[2] >= PROC_PID_LIMIT_MAXID) 787 return EINVAL; 788 memcpy(&alim, &ptmp->p_rlimit[name[2] - 1], sizeof(alim)); 789 if (name[3] == PROC_PID_LIMIT_TYPE_HARD) 790 error = sysctl_quad(oldp, oldlenp, newp, newlen, 791 &alim.rlim_max); 792 else if (name[3] == PROC_PID_LIMIT_TYPE_SOFT) 793 error = sysctl_quad(oldp, oldlenp, newp, newlen, 794 &alim.rlim_cur); 795 else 796 error = EINVAL; 797 798 if (error) 799 return error; 800 801 if (newp) 802 error = dosetrlimit(ptmp, p->p_cred, 803 name[2] - 1, &alim); 804 return error; 805 } 806 return (EINVAL); 807 } 808 809 int 810 emul_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 811 void *newp, size_t newlen, struct proc *p) 812 { 813 static struct { 814 const char *name; 815 int type; 816 } emulations[] = CTL_EMUL_NAMES; 817 const struct emul *e; 818 const char *ename; 819 #ifdef LKM 820 extern struct lock exec_lock; /* XXX */ 821 int error; 822 #else 823 extern int nexecs_builtin; 824 extern const struct execsw execsw_builtin[]; 825 int i; 826 #endif 827 828 /* all sysctl names at this level are name and field */ 829 if (namelen < 2) 830 return (ENOTDIR); /* overloaded */ 831 832 if ((u_int) name[0] >= EMUL_MAXID || name[0] == 0) 833 return (EOPNOTSUPP); 834 835 ename = emulations[name[0]].name; 836 837 #ifdef LKM 838 lockmgr(&exec_lock, LK_SHARED, NULL); 839 if ((e = emul_search(ename))) { 840 error = (*e->e_sysctl)(name + 1, namelen - 1, oldp, oldlenp, 841 newp, newlen, p); 842 } else 843 error = EOPNOTSUPP; 844 lockmgr(&exec_lock, LK_RELEASE, NULL); 845 846 return (error); 847 #else 848 for (i = 0; i < nexecs_builtin; i++) { 849 e = execsw_builtin[i].es_emul; 850 if (e == NULL || strcmp(ename, e->e_name) != 0 || 851 e->e_sysctl != NULL) 852 continue; 853 854 return (*e->e_sysctl)(name + 1, namelen - 1, oldp, oldlenp, 855 newp, newlen, p); 856 } 857 858 return (EOPNOTSUPP); 859 #endif 860 } 861 /* 862 * Convenience macros. 863 */ 864 865 #define SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, len) \ 866 if (oldlenp) { \ 867 if (!oldp) \ 868 *oldlenp = len; \ 869 else { \ 870 if (*oldlenp < len) \ 871 return(ENOMEM); \ 872 *oldlenp = len; \ 873 error = copyout((caddr_t)valp, oldp, len); \ 874 } \ 875 } 876 877 #define SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, typ) \ 878 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, sizeof(typ)) 879 880 #define SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) \ 881 if (newp && newlen != len) \ 882 return (EINVAL); 883 884 #define SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, typ) \ 885 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, sizeof(typ)) 886 887 #define SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, len) \ 888 if (error == 0 && newp) \ 889 error = copyin(newp, valp, len); 890 891 #define SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, typ) \ 892 SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, sizeof(typ)) 893 894 #define SYSCTL_STRING_CORE(oldp, oldlenp, str) \ 895 if (oldlenp) { \ 896 len = strlen(str) + 1; \ 897 if (!oldp) \ 898 *oldlenp = len; \ 899 else { \ 900 if (*oldlenp < len) { \ 901 err2 = ENOMEM; \ 902 len = *oldlenp; \ 903 } else \ 904 *oldlenp = len; \ 905 error = copyout(str, oldp, len);\ 906 if (error == 0) \ 907 error = err2; \ 908 } \ 909 } 910 911 /* 912 * Validate parameters and get old / set new parameters 913 * for an integer-valued sysctl function. 914 */ 915 int 916 sysctl_int(void *oldp, size_t *oldlenp, void *newp, size_t newlen, int *valp) 917 { 918 int error = 0; 919 920 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 921 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, int) 922 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, int) 923 924 return (error); 925 } 926 927 928 /* 929 * As above, but read-only. 930 */ 931 int 932 sysctl_rdint(void *oldp, size_t *oldlenp, void *newp, int val) 933 { 934 int error = 0; 935 936 if (newp) 937 return (EPERM); 938 939 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, int) 940 941 return (error); 942 } 943 944 /* 945 * Validate parameters and get old / set new parameters 946 * for an quad-valued sysctl function. 947 */ 948 int 949 sysctl_quad(void *oldp, size_t *oldlenp, void *newp, size_t newlen, 950 quad_t *valp) 951 { 952 int error = 0; 953 954 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, quad_t) 955 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, quad_t) 956 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, quad_t) 957 958 return (error); 959 } 960 961 /* 962 * As above, but read-only. 963 */ 964 int 965 sysctl_rdquad(void *oldp, size_t *oldlenp, void *newp, quad_t val) 966 { 967 int error = 0; 968 969 if (newp) 970 return (EPERM); 971 972 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, quad_t) 973 974 return (error); 975 } 976 977 /* 978 * Validate parameters and get old / set new parameters 979 * for a string-valued sysctl function. 980 */ 981 int 982 sysctl_string(void *oldp, size_t *oldlenp, void *newp, size_t newlen, char *str, 983 int maxlen) 984 { 985 int len, error = 0, err2 = 0; 986 987 if (newp && newlen >= maxlen) 988 return (EINVAL); 989 990 SYSCTL_STRING_CORE(oldp, oldlenp, str); 991 992 if (error == 0 && newp) { 993 error = copyin(newp, str, newlen); 994 str[newlen] = 0; 995 } 996 return (error); 997 } 998 999 /* 1000 * As above, but read-only. 1001 */ 1002 int 1003 sysctl_rdstring(void *oldp, size_t *oldlenp, void *newp, const char *str) 1004 { 1005 int len, error = 0, err2 = 0; 1006 1007 if (newp) 1008 return (EPERM); 1009 1010 SYSCTL_STRING_CORE(oldp, oldlenp, str); 1011 1012 return (error); 1013 } 1014 1015 /* 1016 * Validate parameters and get old / set new parameters 1017 * for a structure oriented sysctl function. 1018 */ 1019 int 1020 sysctl_struct(void *oldp, size_t *oldlenp, void *newp, size_t newlen, void *sp, 1021 int len) 1022 { 1023 int error = 0; 1024 1025 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) 1026 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1027 SYSCTL_SCALAR_NEWPCOP_LEN(newp, sp, len) 1028 1029 return (error); 1030 } 1031 1032 /* 1033 * Validate parameters and get old parameters 1034 * for a structure oriented sysctl function. 1035 */ 1036 int 1037 sysctl_rdstruct(void *oldp, size_t *oldlenp, void *newp, const void *sp, 1038 int len) 1039 { 1040 int error = 0; 1041 1042 if (newp) 1043 return (EPERM); 1044 1045 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1046 1047 return (error); 1048 } 1049 1050 /* 1051 * As above, but can return a truncated result. 1052 */ 1053 int 1054 sysctl_rdminstruct(void *oldp, size_t *oldlenp, void *newp, const void *sp, 1055 int len) 1056 { 1057 int error = 0; 1058 1059 if (newp) 1060 return (EPERM); 1061 1062 len = min(*oldlenp, len); 1063 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1064 1065 return (error); 1066 } 1067 1068 /* 1069 * Get file structures. 1070 */ 1071 static int 1072 sysctl_file(void *vwhere, size_t *sizep) 1073 { 1074 int buflen, error; 1075 struct file *fp; 1076 char *start, *where; 1077 1078 start = where = vwhere; 1079 buflen = *sizep; 1080 if (where == NULL) { 1081 /* 1082 * overestimate by 10 files 1083 */ 1084 *sizep = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 1085 return (0); 1086 } 1087 1088 /* 1089 * first copyout filehead 1090 */ 1091 if (buflen < sizeof(filehead)) { 1092 *sizep = 0; 1093 return (0); 1094 } 1095 error = copyout((caddr_t)&filehead, where, sizeof(filehead)); 1096 if (error) 1097 return (error); 1098 buflen -= sizeof(filehead); 1099 where += sizeof(filehead); 1100 1101 /* 1102 * followed by an array of file structures 1103 */ 1104 for (fp = filehead.lh_first; fp != 0; fp = fp->f_list.le_next) { 1105 if (buflen < sizeof(struct file)) { 1106 *sizep = where - start; 1107 return (ENOMEM); 1108 } 1109 error = copyout((caddr_t)fp, where, sizeof(struct file)); 1110 if (error) 1111 return (error); 1112 buflen -= sizeof(struct file); 1113 where += sizeof(struct file); 1114 } 1115 *sizep = where - start; 1116 return (0); 1117 } 1118 1119 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1120 #define FILL_PERM(src, dst) do { \ 1121 (dst)._key = (src)._key; \ 1122 (dst).uid = (src).uid; \ 1123 (dst).gid = (src).gid; \ 1124 (dst).cuid = (src).cuid; \ 1125 (dst).cgid = (src).cgid; \ 1126 (dst).mode = (src).mode; \ 1127 (dst)._seq = (src)._seq; \ 1128 } while (0); 1129 #define FILL_MSG(src, dst) do { \ 1130 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1131 (dst).msg_qnum = (src).msg_qnum; \ 1132 (dst).msg_qbytes = (src).msg_qbytes; \ 1133 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1134 (dst).msg_lspid = (src).msg_lspid; \ 1135 (dst).msg_lrpid = (src).msg_lrpid; \ 1136 (dst).msg_stime = (src).msg_stime; \ 1137 (dst).msg_rtime = (src).msg_rtime; \ 1138 (dst).msg_ctime = (src).msg_ctime; \ 1139 } while (0) 1140 #define FILL_SEM(src, dst) do { \ 1141 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1142 (dst).sem_nsems = (src).sem_nsems; \ 1143 (dst).sem_otime = (src).sem_otime; \ 1144 (dst).sem_ctime = (src).sem_ctime; \ 1145 } while (0) 1146 #define FILL_SHM(src, dst) do { \ 1147 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1148 (dst).shm_segsz = (src).shm_segsz; \ 1149 (dst).shm_lpid = (src).shm_lpid; \ 1150 (dst).shm_cpid = (src).shm_cpid; \ 1151 (dst).shm_atime = (src).shm_atime; \ 1152 (dst).shm_dtime = (src).shm_dtime; \ 1153 (dst).shm_ctime = (src).shm_ctime; \ 1154 (dst).shm_nattch = (src).shm_nattch; \ 1155 } while (0) 1156 1157 static int 1158 sysctl_sysvipc(int *name, u_int namelen, void *where, size_t *sizep) 1159 { 1160 #ifdef SYSVMSG 1161 struct msg_sysctl_info *msgsi; 1162 #endif 1163 #ifdef SYSVSEM 1164 struct sem_sysctl_info *semsi; 1165 #endif 1166 #ifdef SYSVSHM 1167 struct shm_sysctl_info *shmsi; 1168 #endif 1169 size_t infosize, dssize, tsize, buflen; 1170 void *buf = NULL; 1171 char *start; 1172 int32_t nds; 1173 int i, error, ret; 1174 1175 if (namelen != 1) 1176 return (EINVAL); 1177 1178 start = where; 1179 buflen = *sizep; 1180 1181 switch (*name) { 1182 case KERN_SYSVIPC_MSG_INFO: 1183 #ifdef SYSVMSG 1184 infosize = sizeof(msgsi->msginfo); 1185 nds = msginfo.msgmni; 1186 dssize = sizeof(msgsi->msgids[0]); 1187 break; 1188 #else 1189 return (EINVAL); 1190 #endif 1191 case KERN_SYSVIPC_SEM_INFO: 1192 #ifdef SYSVSEM 1193 infosize = sizeof(semsi->seminfo); 1194 nds = seminfo.semmni; 1195 dssize = sizeof(semsi->semids[0]); 1196 break; 1197 #else 1198 return (EINVAL); 1199 #endif 1200 case KERN_SYSVIPC_SHM_INFO: 1201 #ifdef SYSVSHM 1202 infosize = sizeof(shmsi->shminfo); 1203 nds = shminfo.shmmni; 1204 dssize = sizeof(shmsi->shmids[0]); 1205 break; 1206 #else 1207 return (EINVAL); 1208 #endif 1209 default: 1210 return (EINVAL); 1211 } 1212 /* 1213 * Round infosize to 64 bit boundary if requesting more than just 1214 * the info structure or getting the total data size. 1215 */ 1216 if (where == NULL || *sizep > infosize) 1217 infosize = ((infosize + 7) / 8) * 8; 1218 tsize = infosize + nds * dssize; 1219 1220 /* Return just the total size required. */ 1221 if (where == NULL) { 1222 *sizep = tsize; 1223 return (0); 1224 } 1225 1226 /* Not enough room for even the info struct. */ 1227 if (buflen < infosize) { 1228 *sizep = 0; 1229 return (ENOMEM); 1230 } 1231 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1232 memset(buf, 0, min(tsize, buflen)); 1233 1234 switch (*name) { 1235 #ifdef SYSVMSG 1236 case KERN_SYSVIPC_MSG_INFO: 1237 msgsi = (struct msg_sysctl_info *)buf; 1238 msgsi->msginfo = msginfo; 1239 break; 1240 #endif 1241 #ifdef SYSVSEM 1242 case KERN_SYSVIPC_SEM_INFO: 1243 semsi = (struct sem_sysctl_info *)buf; 1244 semsi->seminfo = seminfo; 1245 break; 1246 #endif 1247 #ifdef SYSVSHM 1248 case KERN_SYSVIPC_SHM_INFO: 1249 shmsi = (struct shm_sysctl_info *)buf; 1250 shmsi->shminfo = shminfo; 1251 break; 1252 #endif 1253 } 1254 buflen -= infosize; 1255 1256 ret = 0; 1257 if (buflen > 0) { 1258 /* Fill in the IPC data structures. */ 1259 for (i = 0; i < nds; i++) { 1260 if (buflen < dssize) { 1261 ret = ENOMEM; 1262 break; 1263 } 1264 switch (*name) { 1265 #ifdef SYSVMSG 1266 case KERN_SYSVIPC_MSG_INFO: 1267 FILL_MSG(msqids[i], msgsi->msgids[i]); 1268 break; 1269 #endif 1270 #ifdef SYSVSEM 1271 case KERN_SYSVIPC_SEM_INFO: 1272 FILL_SEM(sema[i], semsi->semids[i]); 1273 break; 1274 #endif 1275 #ifdef SYSVSHM 1276 case KERN_SYSVIPC_SHM_INFO: 1277 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1278 break; 1279 #endif 1280 } 1281 buflen -= dssize; 1282 } 1283 } 1284 *sizep -= buflen; 1285 error = copyout(buf, start, *sizep); 1286 /* If copyout succeeded, use return code set earlier. */ 1287 if (error == 0) 1288 error = ret; 1289 if (buf) 1290 free(buf, M_TEMP); 1291 return (error); 1292 } 1293 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 1294 1295 static int 1296 sysctl_msgbuf(void *vwhere, size_t *sizep) 1297 { 1298 char *where = vwhere; 1299 size_t len, maxlen = *sizep; 1300 long beg, end; 1301 int error; 1302 1303 /* 1304 * deal with cases where the message buffer has 1305 * become corrupted. 1306 */ 1307 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1308 msgbufenabled = 0; 1309 return (ENXIO); 1310 } 1311 1312 if (where == NULL) { 1313 /* always return full buffer size */ 1314 *sizep = msgbufp->msg_bufs; 1315 return (0); 1316 } 1317 1318 error = 0; 1319 maxlen = min(msgbufp->msg_bufs, maxlen); 1320 1321 /* 1322 * First, copy from the write pointer to the end of 1323 * message buffer. 1324 */ 1325 beg = msgbufp->msg_bufx; 1326 end = msgbufp->msg_bufs; 1327 while (maxlen > 0) { 1328 len = min(end - beg, maxlen); 1329 if (len == 0) 1330 break; 1331 error = copyout(&msgbufp->msg_bufc[beg], where, len); 1332 if (error) 1333 break; 1334 where += len; 1335 maxlen -= len; 1336 1337 /* 1338 * ... then, copy from the beginning of message buffer to 1339 * the write pointer. 1340 */ 1341 beg = 0; 1342 end = msgbufp->msg_bufx; 1343 } 1344 return (error); 1345 } 1346 1347 /* 1348 * try over estimating by 5 procs 1349 */ 1350 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 1351 1352 static int 1353 sysctl_doeproc(int *name, u_int namelen, void *vwhere, size_t *sizep) 1354 { 1355 struct eproc eproc; 1356 struct kinfo_proc2 kproc2; 1357 struct kinfo_proc *dp; 1358 struct proc *p; 1359 const struct proclist_desc *pd; 1360 char *where, *dp2; 1361 int type, op, arg, elem_size, elem_count; 1362 int buflen, needed, error; 1363 1364 dp = vwhere; 1365 dp2 = where = vwhere; 1366 buflen = where != NULL ? *sizep : 0; 1367 error = needed = 0; 1368 type = name[0]; 1369 1370 if (type == KERN_PROC) { 1371 if (namelen != 3 && !(namelen == 2 && name[1] == KERN_PROC_ALL)) 1372 return (EINVAL); 1373 op = name[1]; 1374 if (op != KERN_PROC_ALL) 1375 arg = name[2]; 1376 } else { 1377 if (namelen != 5) 1378 return (EINVAL); 1379 op = name[1]; 1380 arg = name[2]; 1381 elem_size = name[3]; 1382 elem_count = name[4]; 1383 } 1384 1385 proclist_lock_read(); 1386 1387 pd = proclists; 1388 again: 1389 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1390 /* 1391 * Skip embryonic processes. 1392 */ 1393 if (p->p_stat == SIDL) 1394 continue; 1395 /* 1396 * TODO - make more efficient (see notes below). 1397 * do by session. 1398 */ 1399 switch (op) { 1400 1401 case KERN_PROC_PID: 1402 /* could do this with just a lookup */ 1403 if (p->p_pid != (pid_t)arg) 1404 continue; 1405 break; 1406 1407 case KERN_PROC_PGRP: 1408 /* could do this by traversing pgrp */ 1409 if (p->p_pgrp->pg_id != (pid_t)arg) 1410 continue; 1411 break; 1412 1413 case KERN_PROC_SESSION: 1414 if (p->p_session->s_sid != (pid_t)arg) 1415 continue; 1416 break; 1417 1418 case KERN_PROC_TTY: 1419 if (arg == KERN_PROC_TTY_REVOKE) { 1420 if ((p->p_flag & P_CONTROLT) == 0 || 1421 p->p_session->s_ttyp == NULL || 1422 p->p_session->s_ttyvp != NULL) 1423 continue; 1424 } else if ((p->p_flag & P_CONTROLT) == 0 || 1425 p->p_session->s_ttyp == NULL) { 1426 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1427 continue; 1428 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1429 continue; 1430 break; 1431 1432 case KERN_PROC_UID: 1433 if (p->p_ucred->cr_uid != (uid_t)arg) 1434 continue; 1435 break; 1436 1437 case KERN_PROC_RUID: 1438 if (p->p_cred->p_ruid != (uid_t)arg) 1439 continue; 1440 break; 1441 1442 case KERN_PROC_GID: 1443 if (p->p_ucred->cr_gid != (uid_t)arg) 1444 continue; 1445 break; 1446 1447 case KERN_PROC_RGID: 1448 if (p->p_cred->p_rgid != (uid_t)arg) 1449 continue; 1450 break; 1451 1452 case KERN_PROC_ALL: 1453 /* allow everything */ 1454 break; 1455 1456 default: 1457 error = EINVAL; 1458 goto cleanup; 1459 } 1460 if (type == KERN_PROC) { 1461 if (buflen >= sizeof(struct kinfo_proc)) { 1462 fill_eproc(p, &eproc); 1463 error = copyout((caddr_t)p, &dp->kp_proc, 1464 sizeof(struct proc)); 1465 if (error) 1466 goto cleanup; 1467 error = copyout((caddr_t)&eproc, &dp->kp_eproc, 1468 sizeof(eproc)); 1469 if (error) 1470 goto cleanup; 1471 dp++; 1472 buflen -= sizeof(struct kinfo_proc); 1473 } 1474 needed += sizeof(struct kinfo_proc); 1475 } else { /* KERN_PROC2 */ 1476 if (buflen >= elem_size && elem_count > 0) { 1477 fill_kproc2(p, &kproc2); 1478 /* 1479 * Copy out elem_size, but not larger than 1480 * the size of a struct kinfo_proc2. 1481 */ 1482 error = copyout(&kproc2, dp2, 1483 min(sizeof(kproc2), elem_size)); 1484 if (error) 1485 goto cleanup; 1486 dp2 += elem_size; 1487 buflen -= elem_size; 1488 elem_count--; 1489 } 1490 needed += elem_size; 1491 } 1492 } 1493 pd++; 1494 if (pd->pd_list != NULL) 1495 goto again; 1496 proclist_unlock_read(); 1497 1498 if (where != NULL) { 1499 if (type == KERN_PROC) 1500 *sizep = (caddr_t)dp - where; 1501 else 1502 *sizep = dp2 - where; 1503 if (needed > *sizep) 1504 return (ENOMEM); 1505 } else { 1506 needed += KERN_PROCSLOP; 1507 *sizep = needed; 1508 } 1509 return (0); 1510 cleanup: 1511 proclist_unlock_read(); 1512 return (error); 1513 } 1514 1515 /* 1516 * Fill in an eproc structure for the specified process. 1517 */ 1518 void 1519 fill_eproc(struct proc *p, struct eproc *ep) 1520 { 1521 struct tty *tp; 1522 1523 ep->e_paddr = p; 1524 ep->e_sess = p->p_session; 1525 ep->e_pcred = *p->p_cred; 1526 ep->e_ucred = *p->p_ucred; 1527 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1528 ep->e_vm.vm_rssize = 0; 1529 ep->e_vm.vm_tsize = 0; 1530 ep->e_vm.vm_dsize = 0; 1531 ep->e_vm.vm_ssize = 0; 1532 /* ep->e_vm.vm_pmap = XXX; */ 1533 } else { 1534 struct vmspace *vm = p->p_vmspace; 1535 1536 ep->e_vm.vm_rssize = vm_resident_count(vm); 1537 ep->e_vm.vm_tsize = vm->vm_tsize; 1538 ep->e_vm.vm_dsize = vm->vm_dsize; 1539 ep->e_vm.vm_ssize = vm->vm_ssize; 1540 } 1541 if (p->p_pptr) 1542 ep->e_ppid = p->p_pptr->p_pid; 1543 else 1544 ep->e_ppid = 0; 1545 ep->e_pgid = p->p_pgrp->pg_id; 1546 ep->e_sid = ep->e_sess->s_sid; 1547 ep->e_jobc = p->p_pgrp->pg_jobc; 1548 if ((p->p_flag & P_CONTROLT) && 1549 (tp = ep->e_sess->s_ttyp)) { 1550 ep->e_tdev = tp->t_dev; 1551 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1552 ep->e_tsess = tp->t_session; 1553 } else 1554 ep->e_tdev = NODEV; 1555 if (p->p_wmesg) 1556 strncpy(ep->e_wmesg, p->p_wmesg, WMESGLEN); 1557 ep->e_xsize = ep->e_xrssize = 0; 1558 ep->e_xccount = ep->e_xswrss = 0; 1559 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 1560 if (SESS_LEADER(p)) 1561 ep->e_flag |= EPROC_SLEADER; 1562 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 1563 } 1564 1565 /* 1566 * Fill in an eproc structure for the specified process. 1567 */ 1568 static void 1569 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 1570 { 1571 struct tty *tp; 1572 1573 memset(ki, 0, sizeof(*ki)); 1574 1575 ki->p_forw = PTRTOINT64(p->p_forw); 1576 ki->p_back = PTRTOINT64(p->p_back); 1577 ki->p_paddr = PTRTOINT64(p); 1578 1579 ki->p_addr = PTRTOINT64(p->p_addr); 1580 ki->p_fd = PTRTOINT64(p->p_fd); 1581 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 1582 ki->p_stats = PTRTOINT64(p->p_stats); 1583 ki->p_limit = PTRTOINT64(p->p_limit); 1584 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 1585 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 1586 ki->p_sess = PTRTOINT64(p->p_session); 1587 ki->p_tsess = 0; /* may be changed if controlling tty below */ 1588 ki->p_ru = PTRTOINT64(p->p_ru); 1589 1590 ki->p_eflag = 0; 1591 ki->p_exitsig = p->p_exitsig; 1592 ki->p_flag = p->p_flag; 1593 1594 ki->p_pid = p->p_pid; 1595 if (p->p_pptr) 1596 ki->p_ppid = p->p_pptr->p_pid; 1597 else 1598 ki->p_ppid = 0; 1599 ki->p_sid = p->p_session->s_sid; 1600 ki->p__pgid = p->p_pgrp->pg_id; 1601 1602 ki->p_tpgid = NO_PID; /* may be changed if controlling tty below */ 1603 1604 ki->p_uid = p->p_ucred->cr_uid; 1605 ki->p_ruid = p->p_cred->p_ruid; 1606 ki->p_gid = p->p_ucred->cr_gid; 1607 ki->p_rgid = p->p_cred->p_rgid; 1608 1609 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 1610 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 1611 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 1612 1613 ki->p_jobc = p->p_pgrp->pg_jobc; 1614 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 1615 ki->p_tdev = tp->t_dev; 1616 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1617 ki->p_tsess = PTRTOINT64(tp->t_session); 1618 } else { 1619 ki->p_tdev = NODEV; 1620 } 1621 1622 ki->p_estcpu = p->p_estcpu; 1623 ki->p_rtime_sec = p->p_rtime.tv_sec; 1624 ki->p_rtime_usec = p->p_rtime.tv_usec; 1625 ki->p_cpticks = p->p_cpticks; 1626 ki->p_pctcpu = p->p_pctcpu; 1627 ki->p_swtime = p->p_swtime; 1628 ki->p_slptime = p->p_slptime; 1629 if (p->p_stat == SONPROC) { 1630 KDASSERT(p->p_cpu != NULL); 1631 ki->p_schedflags = p->p_cpu->ci_schedstate.spc_flags; 1632 } else 1633 ki->p_schedflags = 0; 1634 1635 ki->p_uticks = p->p_uticks; 1636 ki->p_sticks = p->p_sticks; 1637 ki->p_iticks = p->p_iticks; 1638 1639 ki->p_tracep = PTRTOINT64(p->p_tracep); 1640 ki->p_traceflag = p->p_traceflag; 1641 1642 ki->p_holdcnt = p->p_holdcnt; 1643 1644 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 1645 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 1646 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 1647 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 1648 1649 ki->p_stat = p->p_stat; 1650 ki->p_priority = p->p_priority; 1651 ki->p_usrpri = p->p_usrpri; 1652 ki->p_nice = p->p_nice; 1653 1654 ki->p_xstat = p->p_xstat; 1655 ki->p_acflag = p->p_acflag; 1656 1657 strncpy(ki->p_comm, p->p_comm, 1658 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 1659 1660 if (p->p_wmesg) 1661 strncpy(ki->p_wmesg, p->p_wmesg, sizeof(ki->p_wmesg)); 1662 ki->p_wchan = PTRTOINT64(p->p_wchan); 1663 1664 strncpy(ki->p_login, p->p_session->s_login, sizeof(ki->p_login)); 1665 1666 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1667 ki->p_vm_rssize = 0; 1668 ki->p_vm_tsize = 0; 1669 ki->p_vm_dsize = 0; 1670 ki->p_vm_ssize = 0; 1671 } else { 1672 struct vmspace *vm = p->p_vmspace; 1673 1674 ki->p_vm_rssize = vm_resident_count(vm); 1675 ki->p_vm_tsize = vm->vm_tsize; 1676 ki->p_vm_dsize = vm->vm_dsize; 1677 ki->p_vm_ssize = vm->vm_ssize; 1678 } 1679 1680 if (p->p_session->s_ttyvp) 1681 ki->p_eflag |= EPROC_CTTY; 1682 if (SESS_LEADER(p)) 1683 ki->p_eflag |= EPROC_SLEADER; 1684 1685 /* XXX Is this double check necessary? */ 1686 if ((p->p_flag & P_INMEM) == 0 || P_ZOMBIE(p)) { 1687 ki->p_uvalid = 0; 1688 } else { 1689 ki->p_uvalid = 1; 1690 1691 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 1692 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 1693 1694 ki->p_uutime_sec = p->p_stats->p_ru.ru_utime.tv_sec; 1695 ki->p_uutime_usec = p->p_stats->p_ru.ru_utime.tv_usec; 1696 ki->p_ustime_sec = p->p_stats->p_ru.ru_stime.tv_sec; 1697 ki->p_ustime_usec = p->p_stats->p_ru.ru_stime.tv_usec; 1698 1699 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 1700 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 1701 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 1702 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 1703 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 1704 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 1705 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 1706 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 1707 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 1708 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 1709 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 1710 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 1711 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 1712 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 1713 1714 ki->p_uctime_sec = p->p_stats->p_cru.ru_utime.tv_sec + 1715 p->p_stats->p_cru.ru_stime.tv_sec; 1716 ki->p_uctime_usec = p->p_stats->p_cru.ru_utime.tv_usec + 1717 p->p_stats->p_cru.ru_stime.tv_usec; 1718 } 1719 #ifdef MULTIPROCESSOR 1720 if (p->p_cpu != NULL) 1721 ki->p_cpuid = p->p_cpu->ci_cpuid; 1722 else 1723 #endif 1724 ki->p_cpuid = KI_NOCPU; 1725 } 1726 1727 int 1728 sysctl_procargs(int *name, u_int namelen, void *where, size_t *sizep, 1729 struct proc *up) 1730 { 1731 struct ps_strings pss; 1732 struct proc *p; 1733 size_t len, upper_bound, xlen; 1734 struct uio auio; 1735 struct iovec aiov; 1736 vaddr_t argv; 1737 pid_t pid; 1738 int nargv, type, error, i; 1739 char *arg; 1740 char *tmp; 1741 1742 if (namelen != 2) 1743 return (EINVAL); 1744 pid = name[0]; 1745 type = name[1]; 1746 1747 switch (type) { 1748 case KERN_PROC_ARGV: 1749 case KERN_PROC_NARGV: 1750 case KERN_PROC_ENV: 1751 case KERN_PROC_NENV: 1752 /* ok */ 1753 break; 1754 default: 1755 return (EINVAL); 1756 } 1757 1758 /* check pid */ 1759 if ((p = pfind(pid)) == NULL) 1760 return (EINVAL); 1761 1762 /* only root or same user change look at the environment */ 1763 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1764 if (up->p_ucred->cr_uid != 0) { 1765 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1766 up->p_cred->p_ruid != p->p_cred->p_svuid) 1767 return (EPERM); 1768 } 1769 } 1770 1771 if (sizep != NULL && where == NULL) { 1772 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1773 *sizep = sizeof (int); 1774 else 1775 *sizep = ARG_MAX; /* XXX XXX XXX */ 1776 return (0); 1777 } 1778 if (where == NULL || sizep == NULL) 1779 return (EINVAL); 1780 1781 /* 1782 * Zombies don't have a stack, so we can't read their psstrings. 1783 * System processes also don't have a user stack. 1784 */ 1785 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1786 return (EINVAL); 1787 1788 /* 1789 * Lock the process down in memory. 1790 */ 1791 /* XXXCDC: how should locking work here? */ 1792 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1793 return (EFAULT); 1794 p->p_vmspace->vm_refcnt++; /* XXX */ 1795 1796 /* 1797 * Allocate a temporary buffer to hold the arguments. 1798 */ 1799 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1800 1801 /* 1802 * Read in the ps_strings structure. 1803 */ 1804 aiov.iov_base = &pss; 1805 aiov.iov_len = sizeof(pss); 1806 auio.uio_iov = &aiov; 1807 auio.uio_iovcnt = 1; 1808 auio.uio_offset = (vaddr_t)p->p_psstr; 1809 auio.uio_resid = sizeof(pss); 1810 auio.uio_segflg = UIO_SYSSPACE; 1811 auio.uio_rw = UIO_READ; 1812 auio.uio_procp = NULL; 1813 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1814 if (error) 1815 goto done; 1816 1817 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1818 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1819 else 1820 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1821 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1822 error = copyout(&nargv, where, sizeof(nargv)); 1823 *sizep = sizeof(nargv); 1824 goto done; 1825 } 1826 /* 1827 * Now read the address of the argument vector. 1828 */ 1829 switch (type) { 1830 case KERN_PROC_ARGV: 1831 /* XXX compat32 stuff here */ 1832 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1833 break; 1834 case KERN_PROC_ENV: 1835 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1836 break; 1837 default: 1838 return (EINVAL); 1839 } 1840 auio.uio_offset = (off_t)(long)tmp; 1841 aiov.iov_base = &argv; 1842 aiov.iov_len = sizeof(argv); 1843 auio.uio_iov = &aiov; 1844 auio.uio_iovcnt = 1; 1845 auio.uio_resid = sizeof(argv); 1846 auio.uio_segflg = UIO_SYSSPACE; 1847 auio.uio_rw = UIO_READ; 1848 auio.uio_procp = NULL; 1849 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1850 if (error) 1851 goto done; 1852 1853 /* 1854 * Now copy in the actual argument vector, one page at a time, 1855 * since we don't know how long the vector is (though, we do 1856 * know how many NUL-terminated strings are in the vector). 1857 */ 1858 len = 0; 1859 upper_bound = *sizep; 1860 for (; nargv != 0 && len < upper_bound; len += xlen) { 1861 aiov.iov_base = arg; 1862 aiov.iov_len = PAGE_SIZE; 1863 auio.uio_iov = &aiov; 1864 auio.uio_iovcnt = 1; 1865 auio.uio_offset = argv + len; 1866 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1867 auio.uio_resid = xlen; 1868 auio.uio_segflg = UIO_SYSSPACE; 1869 auio.uio_rw = UIO_READ; 1870 auio.uio_procp = NULL; 1871 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1872 if (error) 1873 goto done; 1874 1875 for (i = 0; i < xlen && nargv != 0; i++) { 1876 if (arg[i] == '\0') 1877 nargv--; /* one full string */ 1878 } 1879 1880 /* make sure we don't copyout past the end of the user's buffer */ 1881 if (len + i > upper_bound) 1882 i = upper_bound - len; 1883 1884 error = copyout(arg, (char *)where + len, i); 1885 if (error) 1886 break; 1887 1888 if (nargv == 0) { 1889 len += i; 1890 break; 1891 } 1892 } 1893 *sizep = len; 1894 1895 done: 1896 uvmspace_free(p->p_vmspace); 1897 1898 free(arg, M_TEMP); 1899 return (error); 1900 } 1901 1902 #if NPTY > 0 1903 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1904 1905 /* 1906 * Validate parameters and get old / set new parameters 1907 * for pty sysctl function. 1908 */ 1909 static int 1910 sysctl_pty(void *oldp, size_t *oldlenp, void *newp, size_t newlen) 1911 { 1912 int error = 0; 1913 int oldmax = 0, newmax = 0; 1914 1915 /* get current value of maxptys */ 1916 oldmax = pty_maxptys(0, 0); 1917 1918 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &oldmax, int) 1919 1920 if (!error && newp) { 1921 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 1922 SYSCTL_SCALAR_NEWPCOP_TYP(newp, &newmax, int) 1923 1924 if (newmax != pty_maxptys(newmax, (newp != NULL))) 1925 return (EINVAL); 1926 1927 } 1928 1929 return (error); 1930 } 1931 #endif /* NPTY > 0 */ 1932 1933 static int 1934 sysctl_dotkstat(name, namelen, where, sizep, newp) 1935 int *name; 1936 u_int namelen; 1937 void *where; 1938 size_t *sizep; 1939 void *newp; 1940 { 1941 /* all sysctl names at this level are terminal */ 1942 if (namelen != 1) 1943 return (ENOTDIR); /* overloaded */ 1944 1945 switch (name[0]) { 1946 case KERN_TKSTAT_NIN: 1947 return (sysctl_rdquad(where, sizep, newp, tk_nin)); 1948 case KERN_TKSTAT_NOUT: 1949 return (sysctl_rdquad(where, sizep, newp, tk_nout)); 1950 case KERN_TKSTAT_CANCC: 1951 return (sysctl_rdquad(where, sizep, newp, tk_cancc)); 1952 case KERN_TKSTAT_RAWCC: 1953 return (sysctl_rdquad(where, sizep, newp, tk_rawcc)); 1954 default: 1955 return (EOPNOTSUPP); 1956 } 1957 } 1958
Indexes created Tue Sep 30 06:09:59 GMT 2025