kern_sysctl.c revision 1.110
1 /* $NetBSD: kern_sysctl.c,v 1.110 2002/08/24 17:27:01 augustss 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 1.110 2002/08/24 17:27:01 augustss 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 #include "rnd.h" 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/buf.h> 60 #include <sys/device.h> 61 #include <sys/disklabel.h> 62 #include <sys/dkstat.h> 63 #include <sys/exec.h> 64 #include <sys/file.h> 65 #include <sys/ioctl.h> 66 #include <sys/malloc.h> 67 #include <sys/mount.h> 68 #include <sys/msgbuf.h> 69 #include <sys/pool.h> 70 #include <sys/proc.h> 71 #include <sys/resource.h> 72 #include <sys/resourcevar.h> 73 #include <sys/syscallargs.h> 74 #include <sys/tty.h> 75 #include <sys/unistd.h> 76 #include <sys/vnode.h> 77 #include <sys/socketvar.h> 78 #define __SYSCTL_PRIVATE 79 #include <sys/sysctl.h> 80 #include <sys/lock.h> 81 #include <sys/namei.h> 82 83 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 84 #include <sys/ipc.h> 85 #endif 86 #ifdef SYSVMSG 87 #include <sys/msg.h> 88 #endif 89 #ifdef SYSVSEM 90 #include <sys/sem.h> 91 #endif 92 #ifdef SYSVSHM 93 #include <sys/shm.h> 94 #endif 95 96 #include <dev/cons.h> 97 98 #if defined(DDB) 99 #include <ddb/ddbvar.h> 100 #endif 101 102 #ifndef PIPE_SOCKETPAIR 103 #include <sys/pipe.h> 104 #endif 105 106 #if NRND > 0 107 #include <sys/rnd.h> 108 #endif 109 110 #include "ubtbcmfw.h" 111 #if NUBTBCMFW 112 #include <dev/usb/ubtbcmfw.h> 113 #endif 114 115 #define PTRTOINT64(foo) ((u_int64_t)(uintptr_t)(foo)) 116 117 static int sysctl_file(void *, size_t *); 118 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 119 static int sysctl_sysvipc(int *, u_int, void *, size_t *); 120 #endif 121 static int sysctl_msgbuf(void *, size_t *); 122 static int sysctl_doeproc(int *, u_int, void *, size_t *); 123 static int sysctl_dotkstat(int *, u_int, void *, size_t *, void *); 124 static int sysctl_dodev(int *, u_int, void *, size_t *, void *, size_t, 125 struct proc *); 126 #ifdef MULTIPROCESSOR 127 static int sysctl_docptime(void *, size_t *, void *); 128 static int sysctl_ncpus(void); 129 #endif 130 static void fill_kproc2(struct proc *, struct kinfo_proc2 *); 131 static int sysctl_procargs(int *, u_int, void *, size_t *, struct proc *); 132 #if NPTY > 0 133 static int sysctl_pty(void *, size_t *, void *, size_t); 134 #endif 135 136 /* 137 * The `sysctl_memlock' is intended to keep too many processes from 138 * locking down memory by doing sysctls at once. Whether or not this 139 * is really a good idea to worry about it probably a subject of some 140 * debate. 141 */ 142 struct lock sysctl_memlock; 143 144 void 145 sysctl_init(void) 146 { 147 148 lockinit(&sysctl_memlock, PRIBIO|PCATCH, "sysctl", 0, 0); 149 } 150 151 int 152 sys___sysctl(struct proc *p, void *v, register_t *retval) 153 { 154 struct sys___sysctl_args /* { 155 syscallarg(int *) name; 156 syscallarg(u_int) namelen; 157 syscallarg(void *) old; 158 syscallarg(size_t *) oldlenp; 159 syscallarg(void *) new; 160 syscallarg(size_t) newlen; 161 } */ *uap = v; 162 int error; 163 size_t savelen = 0, oldlen = 0; 164 sysctlfn *fn; 165 int name[CTL_MAXNAME]; 166 size_t *oldlenp; 167 168 /* 169 * all top-level sysctl names are non-terminal 170 */ 171 if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 2) 172 return (EINVAL); 173 error = copyin(SCARG(uap, name), &name, 174 SCARG(uap, namelen) * sizeof(int)); 175 if (error) 176 return (error); 177 178 /* 179 * For all but CTL_PROC, must be root to change a value. 180 * For CTL_PROC, must be root, or owner of the proc (and not suid), 181 * this is checked in proc_sysctl() (once we know the targer proc). 182 */ 183 if (SCARG(uap, new) != NULL && name[0] != CTL_PROC && 184 (error = suser(p->p_ucred, &p->p_acflag))) 185 return error; 186 187 switch (name[0]) { 188 case CTL_KERN: 189 fn = kern_sysctl; 190 break; 191 case CTL_HW: 192 fn = hw_sysctl; 193 break; 194 case CTL_VM: 195 fn = uvm_sysctl; 196 break; 197 case CTL_NET: 198 fn = net_sysctl; 199 break; 200 case CTL_VFS: 201 fn = vfs_sysctl; 202 break; 203 case CTL_MACHDEP: 204 fn = cpu_sysctl; 205 break; 206 #ifdef DEBUG 207 case CTL_DEBUG: 208 fn = debug_sysctl; 209 break; 210 #endif 211 #ifdef DDB 212 case CTL_DDB: 213 fn = ddb_sysctl; 214 break; 215 #endif 216 case CTL_PROC: 217 fn = proc_sysctl; 218 break; 219 220 case CTL_EMUL: 221 fn = emul_sysctl; 222 break; 223 default: 224 return (EOPNOTSUPP); 225 } 226 227 /* 228 * XXX Hey, we wire `old', but what about `new'? 229 */ 230 231 oldlenp = SCARG(uap, oldlenp); 232 if (oldlenp) { 233 if ((error = copyin(oldlenp, &oldlen, sizeof(oldlen)))) 234 return (error); 235 oldlenp = &oldlen; 236 } 237 if (SCARG(uap, old) != NULL) { 238 error = lockmgr(&sysctl_memlock, LK_EXCLUSIVE, NULL); 239 if (error) 240 return (error); 241 error = uvm_vslock(p, SCARG(uap, old), oldlen, VM_PROT_WRITE); 242 if (error) { 243 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 244 return error; 245 } 246 savelen = oldlen; 247 } 248 error = (*fn)(name + 1, SCARG(uap, namelen) - 1, SCARG(uap, old), 249 oldlenp, SCARG(uap, new), SCARG(uap, newlen), p); 250 if (SCARG(uap, old) != NULL) { 251 uvm_vsunlock(p, SCARG(uap, old), savelen); 252 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 253 } 254 if (error) 255 return (error); 256 if (SCARG(uap, oldlenp)) 257 error = copyout(&oldlen, SCARG(uap, oldlenp), sizeof(oldlen)); 258 return (error); 259 } 260 261 /* 262 * Attributes stored in the kernel. 263 */ 264 char hostname[MAXHOSTNAMELEN]; 265 int hostnamelen; 266 267 char domainname[MAXHOSTNAMELEN]; 268 int domainnamelen; 269 270 long hostid; 271 272 #ifdef INSECURE 273 int securelevel = -1; 274 #else 275 int securelevel = 0; 276 #endif 277 278 #ifndef DEFCORENAME 279 #define DEFCORENAME "%n.core" 280 #endif 281 char defcorename[MAXPATHLEN] = DEFCORENAME; 282 int defcorenamelen = sizeof(DEFCORENAME); 283 284 extern int kern_logsigexit; 285 extern fixpt_t ccpu; 286 287 #ifndef MULTIPROCESSOR 288 #define sysctl_ncpus() 1 289 #endif 290 291 #ifdef MULTIPROCESSOR 292 293 #ifndef CPU_INFO_FOREACH 294 #define CPU_INFO_ITERATOR int 295 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 296 #endif 297 298 static int 299 sysctl_docptime(void *oldp, size_t *oldlenp, void *newp) 300 { 301 u_int64_t cp_time[CPUSTATES]; 302 int i; 303 struct cpu_info *ci; 304 CPU_INFO_ITERATOR cii; 305 306 for (i=0; i<CPUSTATES; i++) 307 cp_time[i] = 0; 308 309 for (CPU_INFO_FOREACH(cii, ci)) { 310 for (i=0; i<CPUSTATES; i++) 311 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 312 } 313 return (sysctl_rdstruct(oldp, oldlenp, newp, 314 cp_time, sizeof(cp_time))); 315 } 316 317 static int 318 sysctl_ncpus(void) 319 { 320 struct cpu_info *ci; 321 CPU_INFO_ITERATOR cii; 322 323 int ncpus = 0; 324 for (CPU_INFO_FOREACH(cii, ci)) 325 ncpus++; 326 return ncpus; 327 } 328 329 #endif 330 331 /* 332 * kernel related system variables. 333 */ 334 int 335 kern_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 336 void *newp, size_t newlen, struct proc *p) 337 { 338 int error, level, inthostid; 339 int old_autonicetime; 340 int old_vnodes; 341 dev_t consdev; 342 #if NRND > 0 343 int v; 344 #endif 345 346 /* All sysctl names at this level, except for a few, are terminal. */ 347 switch (name[0]) { 348 case KERN_PROC: 349 case KERN_PROC2: 350 case KERN_PROF: 351 case KERN_MBUF: 352 case KERN_PROC_ARGS: 353 case KERN_SYSVIPC_INFO: 354 case KERN_PIPE: 355 case KERN_TKSTAT: 356 /* Not terminal. */ 357 break; 358 default: 359 if (namelen != 1) 360 return (ENOTDIR); /* overloaded */ 361 } 362 363 switch (name[0]) { 364 case KERN_OSTYPE: 365 return (sysctl_rdstring(oldp, oldlenp, newp, ostype)); 366 case KERN_OSRELEASE: 367 return (sysctl_rdstring(oldp, oldlenp, newp, osrelease)); 368 case KERN_OSREV: 369 return (sysctl_rdint(oldp, oldlenp, newp, __NetBSD_Version__)); 370 case KERN_VERSION: 371 return (sysctl_rdstring(oldp, oldlenp, newp, version)); 372 case KERN_MAXVNODES: 373 old_vnodes = desiredvnodes; 374 error = sysctl_int(oldp, oldlenp, newp, newlen, &desiredvnodes); 375 if (newp && !error) { 376 if (old_vnodes > desiredvnodes) { 377 desiredvnodes = old_vnodes; 378 return (EINVAL); 379 } 380 vfs_reinit(); 381 nchreinit(); 382 } 383 return (error); 384 case KERN_MAXPROC: 385 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxproc)); 386 case KERN_MAXFILES: 387 return (sysctl_int(oldp, oldlenp, newp, newlen, &maxfiles)); 388 case KERN_ARGMAX: 389 return (sysctl_rdint(oldp, oldlenp, newp, ARG_MAX)); 390 case KERN_SECURELVL: 391 level = securelevel; 392 if ((error = sysctl_int(oldp, oldlenp, newp, newlen, &level)) || 393 newp == NULL) 394 return (error); 395 if (level < securelevel && p->p_pid != 1) 396 return (EPERM); 397 securelevel = level; 398 return (0); 399 case KERN_HOSTNAME: 400 error = sysctl_string(oldp, oldlenp, newp, newlen, 401 hostname, sizeof(hostname)); 402 if (newp && !error) 403 hostnamelen = newlen; 404 return (error); 405 case KERN_DOMAINNAME: 406 error = sysctl_string(oldp, oldlenp, newp, newlen, 407 domainname, sizeof(domainname)); 408 if (newp && !error) 409 domainnamelen = newlen; 410 return (error); 411 case KERN_HOSTID: 412 inthostid = hostid; /* XXX assumes sizeof long <= sizeof int */ 413 error = sysctl_int(oldp, oldlenp, newp, newlen, &inthostid); 414 if (newp && !error) 415 hostid = inthostid; 416 return (error); 417 case KERN_CLOCKRATE: 418 return (sysctl_clockrate(oldp, oldlenp)); 419 case KERN_BOOTTIME: 420 return (sysctl_rdstruct(oldp, oldlenp, newp, &boottime, 421 sizeof(struct timeval))); 422 case KERN_VNODE: 423 return (sysctl_vnode(oldp, oldlenp, p)); 424 case KERN_PROC: 425 case KERN_PROC2: 426 return (sysctl_doeproc(name, namelen, oldp, oldlenp)); 427 case KERN_PROC_ARGS: 428 return (sysctl_procargs(name + 1, namelen - 1, 429 oldp, oldlenp, p)); 430 case KERN_FILE: 431 return (sysctl_file(oldp, oldlenp)); 432 #ifdef GPROF 433 case KERN_PROF: 434 return (sysctl_doprof(name + 1, namelen - 1, oldp, oldlenp, 435 newp, newlen)); 436 #endif 437 case KERN_POSIX1: 438 return (sysctl_rdint(oldp, oldlenp, newp, _POSIX_VERSION)); 439 case KERN_NGROUPS: 440 return (sysctl_rdint(oldp, oldlenp, newp, NGROUPS_MAX)); 441 case KERN_JOB_CONTROL: 442 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 443 case KERN_SAVED_IDS: 444 #ifdef _POSIX_SAVED_IDS 445 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 446 #else 447 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 448 #endif 449 case KERN_MAXPARTITIONS: 450 return (sysctl_rdint(oldp, oldlenp, newp, MAXPARTITIONS)); 451 case KERN_RAWPARTITION: 452 return (sysctl_rdint(oldp, oldlenp, newp, RAW_PART)); 453 #ifdef NTP 454 case KERN_NTPTIME: 455 return (sysctl_ntptime(oldp, oldlenp)); 456 #endif 457 case KERN_AUTONICETIME: 458 old_autonicetime = autonicetime; 459 error = sysctl_int(oldp, oldlenp, newp, newlen, &autonicetime); 460 if (autonicetime < 0) 461 autonicetime = old_autonicetime; 462 return (error); 463 case KERN_AUTONICEVAL: 464 error = sysctl_int(oldp, oldlenp, newp, newlen, &autoniceval); 465 if (autoniceval < PRIO_MIN) 466 autoniceval = PRIO_MIN; 467 if (autoniceval > PRIO_MAX) 468 autoniceval = PRIO_MAX; 469 return (error); 470 case KERN_RTC_OFFSET: 471 return (sysctl_rdint(oldp, oldlenp, newp, rtc_offset)); 472 case KERN_ROOT_DEVICE: 473 return (sysctl_rdstring(oldp, oldlenp, newp, 474 root_device->dv_xname)); 475 case KERN_MSGBUFSIZE: 476 /* 477 * deal with cases where the message buffer has 478 * become corrupted. 479 */ 480 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 481 msgbufenabled = 0; 482 return (ENXIO); 483 } 484 return (sysctl_rdint(oldp, oldlenp, newp, msgbufp->msg_bufs)); 485 case KERN_FSYNC: 486 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 487 case KERN_SYSVMSG: 488 #ifdef SYSVMSG 489 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 490 #else 491 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 492 #endif 493 case KERN_SYSVSEM: 494 #ifdef SYSVSEM 495 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 496 #else 497 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 498 #endif 499 case KERN_SYSVSHM: 500 #ifdef SYSVSHM 501 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 502 #else 503 return (sysctl_rdint(oldp, oldlenp, newp, 0)); 504 #endif 505 case KERN_DEFCORENAME: 506 if (newp && newlen < 1) 507 return (EINVAL); 508 error = sysctl_string(oldp, oldlenp, newp, newlen, 509 defcorename, sizeof(defcorename)); 510 if (newp && !error) 511 defcorenamelen = newlen; 512 return (error); 513 case KERN_SYNCHRONIZED_IO: 514 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 515 case KERN_IOV_MAX: 516 return (sysctl_rdint(oldp, oldlenp, newp, IOV_MAX)); 517 case KERN_MBUF: 518 return (sysctl_dombuf(name + 1, namelen - 1, oldp, oldlenp, 519 newp, newlen)); 520 case KERN_MAPPED_FILES: 521 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 522 case KERN_MEMLOCK: 523 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 524 case KERN_MEMLOCK_RANGE: 525 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 526 case KERN_MEMORY_PROTECTION: 527 return (sysctl_rdint(oldp, oldlenp, newp, 1)); 528 case KERN_LOGIN_NAME_MAX: 529 return (sysctl_rdint(oldp, oldlenp, newp, LOGIN_NAME_MAX)); 530 case KERN_LOGSIGEXIT: 531 return (sysctl_int(oldp, oldlenp, newp, newlen, 532 &kern_logsigexit)); 533 case KERN_FSCALE: 534 return (sysctl_rdint(oldp, oldlenp, newp, FSCALE)); 535 case KERN_CCPU: 536 return (sysctl_rdint(oldp, oldlenp, newp, ccpu)); 537 case KERN_CP_TIME: 538 #ifndef MULTIPROCESSOR 539 return (sysctl_rdstruct(oldp, oldlenp, newp, 540 curcpu()->ci_schedstate.spc_cp_time, 541 sizeof(curcpu()->ci_schedstate.spc_cp_time))); 542 #else 543 return (sysctl_docptime(oldp, oldlenp, newp)); 544 #endif 545 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 546 case KERN_SYSVIPC_INFO: 547 return (sysctl_sysvipc(name + 1, namelen - 1, oldp, oldlenp)); 548 #endif 549 case KERN_MSGBUF: 550 return (sysctl_msgbuf(oldp, oldlenp)); 551 case KERN_CONSDEV: 552 if (cn_tab != NULL) 553 consdev = cn_tab->cn_dev; 554 else 555 consdev = NODEV; 556 return (sysctl_rdstruct(oldp, oldlenp, newp, &consdev, 557 sizeof consdev)); 558 #if NPTY > 0 559 case KERN_MAXPTYS: 560 return sysctl_pty(oldp, oldlenp, newp, newlen); 561 #endif 562 #ifndef PIPE_SOCKETPAIR 563 case KERN_PIPE: 564 return (sysctl_dopipe(name + 1, namelen - 1, oldp, oldlenp, 565 newp, newlen)); 566 #endif 567 case KERN_MAXPHYS: 568 return (sysctl_rdint(oldp, oldlenp, newp, MAXPHYS)); 569 case KERN_SBMAX: 570 { 571 int new_sbmax = sb_max; 572 573 error = sysctl_int(oldp, oldlenp, newp, newlen, &new_sbmax); 574 if (newp && !error) { 575 if (new_sbmax < (16 * 1024)) /* sanity */ 576 return (EINVAL); 577 sb_max = new_sbmax; 578 } 579 return (error); 580 } 581 case KERN_TKSTAT: 582 return (sysctl_dotkstat(name + 1, namelen - 1, oldp, oldlenp, 583 newp)); 584 case KERN_MONOTONIC_CLOCK: /* XXX _POSIX_VERSION */ 585 return (sysctl_rdint(oldp, oldlenp, newp, 200112)); 586 case KERN_URND: 587 #if NRND > 0 588 if (rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY) == 589 sizeof(v)) 590 return (sysctl_rdint(oldp, oldlenp, newp, v)); 591 else 592 return (EIO); /*XXX*/ 593 #else 594 return (EOPNOTSUPP); 595 #endif 596 default: 597 return (EOPNOTSUPP); 598 } 599 /* NOTREACHED */ 600 } 601 602 /* 603 * hardware related system variables. 604 */ 605 int 606 hw_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 607 void *newp, size_t newlen, struct proc *p) 608 { 609 610 /* All sysctl names at this level, except for a few, are terminal. */ 611 switch (name[0]) { 612 case HW_DISKSTATS: 613 case HW_DEV: 614 /* Not terminal. */ 615 break; 616 default: 617 if (namelen != 1) 618 return (ENOTDIR); /* overloaded */ 619 } 620 621 switch (name[0]) { 622 case HW_MACHINE: 623 return (sysctl_rdstring(oldp, oldlenp, newp, machine)); 624 case HW_MACHINE_ARCH: 625 return (sysctl_rdstring(oldp, oldlenp, newp, machine_arch)); 626 case HW_MODEL: 627 return (sysctl_rdstring(oldp, oldlenp, newp, cpu_model)); 628 case HW_NCPU: 629 return (sysctl_rdint(oldp, oldlenp, newp, sysctl_ncpus())); 630 case HW_BYTEORDER: 631 return (sysctl_rdint(oldp, oldlenp, newp, BYTE_ORDER)); 632 case HW_PHYSMEM: 633 return (sysctl_rdint(oldp, oldlenp, newp, ctob(physmem))); 634 case HW_USERMEM: 635 return (sysctl_rdint(oldp, oldlenp, newp, 636 ctob(physmem - uvmexp.wired))); 637 case HW_PAGESIZE: 638 return (sysctl_rdint(oldp, oldlenp, newp, PAGE_SIZE)); 639 case HW_ALIGNBYTES: 640 return (sysctl_rdint(oldp, oldlenp, newp, ALIGNBYTES)); 641 case HW_DISKNAMES: 642 return (sysctl_disknames(oldp, oldlenp)); 643 case HW_DISKSTATS: 644 return (sysctl_diskstats(name + 1, namelen - 1, oldp, oldlenp)); 645 case HW_CNMAGIC: { 646 char magic[CNS_LEN]; 647 int error; 648 649 if (oldp) 650 cn_get_magic(magic, CNS_LEN); 651 error = sysctl_string(oldp, oldlenp, newp, newlen, 652 magic, sizeof(magic)); 653 if (newp && !error) { 654 error = cn_set_magic(magic); 655 } 656 return (error); 657 } 658 case HW_DEV: 659 return (sysctl_dodev(name + 1, namelen - 1, oldp, oldlenp, 660 newp, newlen, p)); 661 default: 662 return (EOPNOTSUPP); 663 } 664 /* NOTREACHED */ 665 } 666 667 #ifdef DEBUG 668 /* 669 * Debugging related system variables. 670 */ 671 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 672 struct ctldebug debug5, debug6, debug7, debug8, debug9; 673 struct ctldebug debug10, debug11, debug12, debug13, debug14; 674 struct ctldebug debug15, debug16, debug17, debug18, debug19; 675 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 676 &debug0, &debug1, &debug2, &debug3, &debug4, 677 &debug5, &debug6, &debug7, &debug8, &debug9, 678 &debug10, &debug11, &debug12, &debug13, &debug14, 679 &debug15, &debug16, &debug17, &debug18, &debug19, 680 }; 681 682 int 683 debug_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 684 void *newp, size_t newlen, struct proc *p) 685 { 686 struct ctldebug *cdp; 687 688 /* all sysctl names at this level are name and field */ 689 if (namelen != 2) 690 return (ENOTDIR); /* overloaded */ 691 if (name[0] >= CTL_DEBUG_MAXID) 692 return (EOPNOTSUPP); 693 cdp = debugvars[name[0]]; 694 if (cdp->debugname == 0) 695 return (EOPNOTSUPP); 696 switch (name[1]) { 697 case CTL_DEBUG_NAME: 698 return (sysctl_rdstring(oldp, oldlenp, newp, cdp->debugname)); 699 case CTL_DEBUG_VALUE: 700 return (sysctl_int(oldp, oldlenp, newp, newlen, cdp->debugvar)); 701 default: 702 return (EOPNOTSUPP); 703 } 704 /* NOTREACHED */ 705 } 706 #endif /* DEBUG */ 707 708 int 709 proc_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 710 void *newp, size_t newlen, struct proc *p) 711 { 712 struct proc *ptmp = NULL; 713 const struct proclist_desc *pd; 714 int error = 0; 715 struct rlimit alim; 716 struct plimit *newplim; 717 char *tmps = NULL; 718 int i, curlen, len; 719 720 if (namelen < 2) 721 return EINVAL; 722 723 if (name[0] == PROC_CURPROC) { 724 ptmp = p; 725 } else { 726 proclist_lock_read(); 727 for (pd = proclists; pd->pd_list != NULL; pd++) { 728 for (ptmp = LIST_FIRST(pd->pd_list); ptmp != NULL; 729 ptmp = LIST_NEXT(ptmp, p_list)) { 730 /* Skip embryonic processes. */ 731 if (ptmp->p_stat == SIDL) 732 continue; 733 if (ptmp->p_pid == (pid_t)name[0]) 734 break; 735 } 736 if (ptmp != NULL) 737 break; 738 } 739 proclist_unlock_read(); 740 if (ptmp == NULL) 741 return(ESRCH); 742 if (p->p_ucred->cr_uid != 0) { 743 if(p->p_cred->p_ruid != ptmp->p_cred->p_ruid || 744 p->p_cred->p_ruid != ptmp->p_cred->p_svuid) 745 return EPERM; 746 if (ptmp->p_cred->p_rgid != ptmp->p_cred->p_svgid) 747 return EPERM; /* sgid proc */ 748 for (i = 0; i < p->p_ucred->cr_ngroups; i++) { 749 if (p->p_ucred->cr_groups[i] == 750 ptmp->p_cred->p_rgid) 751 break; 752 } 753 if (i == p->p_ucred->cr_ngroups) 754 return EPERM; 755 } 756 } 757 if (name[1] == PROC_PID_CORENAME) { 758 if (namelen != 2) 759 return EINVAL; 760 /* 761 * Can't use sysctl_string() here because we may malloc a new 762 * area during the process, so we have to do it by hand. 763 */ 764 curlen = strlen(ptmp->p_limit->pl_corename) + 1; 765 if (oldlenp && *oldlenp < curlen) { 766 if (!oldp) 767 *oldlenp = curlen; 768 return (ENOMEM); 769 } 770 if (newp) { 771 if (securelevel > 2) 772 return EPERM; 773 if (newlen > MAXPATHLEN) 774 return ENAMETOOLONG; 775 tmps = malloc(newlen + 1, M_TEMP, M_WAITOK); 776 if (tmps == NULL) 777 return ENOMEM; 778 error = copyin(newp, tmps, newlen + 1); 779 tmps[newlen] = '\0'; 780 if (error) 781 goto cleanup; 782 /* Enforce to be either 'core' for end with '.core' */ 783 if (newlen < 4) { /* c.o.r.e */ 784 error = EINVAL; 785 goto cleanup; 786 } 787 len = newlen - 4; 788 if (len > 0) { 789 if (tmps[len - 1] != '.' && 790 tmps[len - 1] != '/') { 791 error = EINVAL; 792 goto cleanup; 793 } 794 } 795 if (strcmp(&tmps[len], "core") != 0) { 796 error = EINVAL; 797 goto cleanup; 798 } 799 } 800 if (oldp && oldlenp) { 801 *oldlenp = curlen; 802 error = copyout(ptmp->p_limit->pl_corename, oldp, 803 curlen); 804 } 805 if (newp && error == 0) { 806 /* if the 2 strings are identical, don't limcopy() */ 807 if (strcmp(tmps, ptmp->p_limit->pl_corename) == 0) { 808 error = 0; 809 goto cleanup; 810 } 811 if (ptmp->p_limit->p_refcnt > 1 && 812 (ptmp->p_limit->p_lflags & PL_SHAREMOD) == 0) { 813 newplim = limcopy(ptmp->p_limit); 814 limfree(ptmp->p_limit); 815 ptmp->p_limit = newplim; 816 } 817 if (ptmp->p_limit->pl_corename != defcorename) { 818 free(ptmp->p_limit->pl_corename, M_TEMP); 819 } 820 ptmp->p_limit->pl_corename = tmps; 821 return (0); 822 } 823 cleanup: 824 if (tmps) 825 free(tmps, M_TEMP); 826 return (error); 827 } 828 if (name[1] == PROC_PID_LIMIT) { 829 if (namelen != 4 || name[2] >= PROC_PID_LIMIT_MAXID) 830 return EINVAL; 831 memcpy(&alim, &ptmp->p_rlimit[name[2] - 1], sizeof(alim)); 832 if (name[3] == PROC_PID_LIMIT_TYPE_HARD) 833 error = sysctl_quad(oldp, oldlenp, newp, newlen, 834 &alim.rlim_max); 835 else if (name[3] == PROC_PID_LIMIT_TYPE_SOFT) 836 error = sysctl_quad(oldp, oldlenp, newp, newlen, 837 &alim.rlim_cur); 838 else 839 error = EINVAL; 840 841 if (error) 842 return error; 843 844 if (newp) 845 error = dosetrlimit(ptmp, p->p_cred, 846 name[2] - 1, &alim); 847 return error; 848 } 849 return (EINVAL); 850 } 851 852 int 853 emul_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 854 void *newp, size_t newlen, struct proc *p) 855 { 856 static struct { 857 const char *name; 858 int type; 859 } emulations[] = CTL_EMUL_NAMES; 860 const struct emul *e; 861 const char *ename; 862 #ifdef LKM 863 extern struct lock exec_lock; /* XXX */ 864 int error; 865 #else 866 extern int nexecs_builtin; 867 extern const struct execsw execsw_builtin[]; 868 int i; 869 #endif 870 871 /* all sysctl names at this level are name and field */ 872 if (namelen < 2) 873 return (ENOTDIR); /* overloaded */ 874 875 if ((u_int) name[0] >= EMUL_MAXID || name[0] == 0) 876 return (EOPNOTSUPP); 877 878 ename = emulations[name[0]].name; 879 880 #ifdef LKM 881 lockmgr(&exec_lock, LK_SHARED, NULL); 882 if ((e = emul_search(ename))) { 883 error = (*e->e_sysctl)(name + 1, namelen - 1, oldp, oldlenp, 884 newp, newlen, p); 885 } else 886 error = EOPNOTSUPP; 887 lockmgr(&exec_lock, LK_RELEASE, NULL); 888 889 return (error); 890 #else 891 for (i = 0; i < nexecs_builtin; i++) { 892 e = execsw_builtin[i].es_emul; 893 if (e == NULL || strcmp(ename, e->e_name) != 0 || 894 e->e_sysctl != NULL) 895 continue; 896 897 return (*e->e_sysctl)(name + 1, namelen - 1, oldp, oldlenp, 898 newp, newlen, p); 899 } 900 901 return (EOPNOTSUPP); 902 #endif 903 } 904 /* 905 * Convenience macros. 906 */ 907 908 #define SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, len) \ 909 if (oldlenp) { \ 910 if (!oldp) \ 911 *oldlenp = len; \ 912 else { \ 913 if (*oldlenp < len) \ 914 return(ENOMEM); \ 915 *oldlenp = len; \ 916 error = copyout((caddr_t)valp, oldp, len); \ 917 } \ 918 } 919 920 #define SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, typ) \ 921 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, sizeof(typ)) 922 923 #define SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) \ 924 if (newp && newlen != len) \ 925 return (EINVAL); 926 927 #define SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, typ) \ 928 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, sizeof(typ)) 929 930 #define SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, len) \ 931 if (error == 0 && newp) \ 932 error = copyin(newp, valp, len); 933 934 #define SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, typ) \ 935 SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, sizeof(typ)) 936 937 #define SYSCTL_STRING_CORE(oldp, oldlenp, str) \ 938 if (oldlenp) { \ 939 len = strlen(str) + 1; \ 940 if (!oldp) \ 941 *oldlenp = len; \ 942 else { \ 943 if (*oldlenp < len) { \ 944 err2 = ENOMEM; \ 945 len = *oldlenp; \ 946 } else \ 947 *oldlenp = len; \ 948 error = copyout(str, oldp, len);\ 949 if (error == 0) \ 950 error = err2; \ 951 } \ 952 } 953 954 /* 955 * Validate parameters and get old / set new parameters 956 * for an integer-valued sysctl function. 957 */ 958 int 959 sysctl_int(void *oldp, size_t *oldlenp, void *newp, size_t newlen, int *valp) 960 { 961 int error = 0; 962 963 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 964 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, int) 965 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, int) 966 967 return (error); 968 } 969 970 971 /* 972 * As above, but read-only. 973 */ 974 int 975 sysctl_rdint(void *oldp, size_t *oldlenp, void *newp, int val) 976 { 977 int error = 0; 978 979 if (newp) 980 return (EPERM); 981 982 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, int) 983 984 return (error); 985 } 986 987 /* 988 * Validate parameters and get old / set new parameters 989 * for an quad-valued sysctl function. 990 */ 991 int 992 sysctl_quad(void *oldp, size_t *oldlenp, void *newp, size_t newlen, 993 quad_t *valp) 994 { 995 int error = 0; 996 997 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, quad_t) 998 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, quad_t) 999 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, quad_t) 1000 1001 return (error); 1002 } 1003 1004 /* 1005 * As above, but read-only. 1006 */ 1007 int 1008 sysctl_rdquad(void *oldp, size_t *oldlenp, void *newp, quad_t val) 1009 { 1010 int error = 0; 1011 1012 if (newp) 1013 return (EPERM); 1014 1015 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, quad_t) 1016 1017 return (error); 1018 } 1019 1020 /* 1021 * Validate parameters and get old / set new parameters 1022 * for a string-valued sysctl function. 1023 */ 1024 int 1025 sysctl_string(void *oldp, size_t *oldlenp, void *newp, size_t newlen, char *str, 1026 int maxlen) 1027 { 1028 int len, error = 0, err2 = 0; 1029 1030 if (newp && newlen >= maxlen) 1031 return (EINVAL); 1032 1033 SYSCTL_STRING_CORE(oldp, oldlenp, str); 1034 1035 if (error == 0 && newp) { 1036 error = copyin(newp, str, newlen); 1037 str[newlen] = 0; 1038 } 1039 return (error); 1040 } 1041 1042 /* 1043 * As above, but read-only. 1044 */ 1045 int 1046 sysctl_rdstring(void *oldp, size_t *oldlenp, void *newp, const char *str) 1047 { 1048 int len, error = 0, err2 = 0; 1049 1050 if (newp) 1051 return (EPERM); 1052 1053 SYSCTL_STRING_CORE(oldp, oldlenp, str); 1054 1055 return (error); 1056 } 1057 1058 /* 1059 * Validate parameters and get old / set new parameters 1060 * for a structure oriented sysctl function. 1061 */ 1062 int 1063 sysctl_struct(void *oldp, size_t *oldlenp, void *newp, size_t newlen, void *sp, 1064 int len) 1065 { 1066 int error = 0; 1067 1068 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) 1069 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1070 SYSCTL_SCALAR_NEWPCOP_LEN(newp, sp, len) 1071 1072 return (error); 1073 } 1074 1075 /* 1076 * Validate parameters and get old parameters 1077 * for a structure oriented sysctl function. 1078 */ 1079 int 1080 sysctl_rdstruct(void *oldp, size_t *oldlenp, void *newp, const void *sp, 1081 int len) 1082 { 1083 int error = 0; 1084 1085 if (newp) 1086 return (EPERM); 1087 1088 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1089 1090 return (error); 1091 } 1092 1093 /* 1094 * As above, but can return a truncated result. 1095 */ 1096 int 1097 sysctl_rdminstruct(void *oldp, size_t *oldlenp, void *newp, const void *sp, 1098 int len) 1099 { 1100 int error = 0; 1101 1102 if (newp) 1103 return (EPERM); 1104 1105 len = min(*oldlenp, len); 1106 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1107 1108 return (error); 1109 } 1110 1111 /* 1112 * Get file structures. 1113 */ 1114 static int 1115 sysctl_file(void *vwhere, size_t *sizep) 1116 { 1117 int buflen, error; 1118 struct file *fp; 1119 char *start, *where; 1120 1121 start = where = vwhere; 1122 buflen = *sizep; 1123 if (where == NULL) { 1124 /* 1125 * overestimate by 10 files 1126 */ 1127 *sizep = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 1128 return (0); 1129 } 1130 1131 /* 1132 * first copyout filehead 1133 */ 1134 if (buflen < sizeof(filehead)) { 1135 *sizep = 0; 1136 return (0); 1137 } 1138 error = copyout((caddr_t)&filehead, where, sizeof(filehead)); 1139 if (error) 1140 return (error); 1141 buflen -= sizeof(filehead); 1142 where += sizeof(filehead); 1143 1144 /* 1145 * followed by an array of file structures 1146 */ 1147 for (fp = filehead.lh_first; fp != 0; fp = fp->f_list.le_next) { 1148 if (buflen < sizeof(struct file)) { 1149 *sizep = where - start; 1150 return (ENOMEM); 1151 } 1152 error = copyout((caddr_t)fp, where, sizeof(struct file)); 1153 if (error) 1154 return (error); 1155 buflen -= sizeof(struct file); 1156 where += sizeof(struct file); 1157 } 1158 *sizep = where - start; 1159 return (0); 1160 } 1161 1162 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1163 #define FILL_PERM(src, dst) do { \ 1164 (dst)._key = (src)._key; \ 1165 (dst).uid = (src).uid; \ 1166 (dst).gid = (src).gid; \ 1167 (dst).cuid = (src).cuid; \ 1168 (dst).cgid = (src).cgid; \ 1169 (dst).mode = (src).mode; \ 1170 (dst)._seq = (src)._seq; \ 1171 } while (0); 1172 #define FILL_MSG(src, dst) do { \ 1173 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1174 (dst).msg_qnum = (src).msg_qnum; \ 1175 (dst).msg_qbytes = (src).msg_qbytes; \ 1176 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1177 (dst).msg_lspid = (src).msg_lspid; \ 1178 (dst).msg_lrpid = (src).msg_lrpid; \ 1179 (dst).msg_stime = (src).msg_stime; \ 1180 (dst).msg_rtime = (src).msg_rtime; \ 1181 (dst).msg_ctime = (src).msg_ctime; \ 1182 } while (0) 1183 #define FILL_SEM(src, dst) do { \ 1184 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1185 (dst).sem_nsems = (src).sem_nsems; \ 1186 (dst).sem_otime = (src).sem_otime; \ 1187 (dst).sem_ctime = (src).sem_ctime; \ 1188 } while (0) 1189 #define FILL_SHM(src, dst) do { \ 1190 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1191 (dst).shm_segsz = (src).shm_segsz; \ 1192 (dst).shm_lpid = (src).shm_lpid; \ 1193 (dst).shm_cpid = (src).shm_cpid; \ 1194 (dst).shm_atime = (src).shm_atime; \ 1195 (dst).shm_dtime = (src).shm_dtime; \ 1196 (dst).shm_ctime = (src).shm_ctime; \ 1197 (dst).shm_nattch = (src).shm_nattch; \ 1198 } while (0) 1199 1200 static int 1201 sysctl_sysvipc(int *name, u_int namelen, void *where, size_t *sizep) 1202 { 1203 #ifdef SYSVMSG 1204 struct msg_sysctl_info *msgsi; 1205 #endif 1206 #ifdef SYSVSEM 1207 struct sem_sysctl_info *semsi; 1208 #endif 1209 #ifdef SYSVSHM 1210 struct shm_sysctl_info *shmsi; 1211 #endif 1212 size_t infosize, dssize, tsize, buflen; 1213 void *buf = NULL; 1214 char *start; 1215 int32_t nds; 1216 int i, error, ret; 1217 1218 if (namelen != 1) 1219 return (EINVAL); 1220 1221 start = where; 1222 buflen = *sizep; 1223 1224 switch (*name) { 1225 case KERN_SYSVIPC_MSG_INFO: 1226 #ifdef SYSVMSG 1227 infosize = sizeof(msgsi->msginfo); 1228 nds = msginfo.msgmni; 1229 dssize = sizeof(msgsi->msgids[0]); 1230 break; 1231 #else 1232 return (EINVAL); 1233 #endif 1234 case KERN_SYSVIPC_SEM_INFO: 1235 #ifdef SYSVSEM 1236 infosize = sizeof(semsi->seminfo); 1237 nds = seminfo.semmni; 1238 dssize = sizeof(semsi->semids[0]); 1239 break; 1240 #else 1241 return (EINVAL); 1242 #endif 1243 case KERN_SYSVIPC_SHM_INFO: 1244 #ifdef SYSVSHM 1245 infosize = sizeof(shmsi->shminfo); 1246 nds = shminfo.shmmni; 1247 dssize = sizeof(shmsi->shmids[0]); 1248 break; 1249 #else 1250 return (EINVAL); 1251 #endif 1252 default: 1253 return (EINVAL); 1254 } 1255 /* 1256 * Round infosize to 64 bit boundary if requesting more than just 1257 * the info structure or getting the total data size. 1258 */ 1259 if (where == NULL || *sizep > infosize) 1260 infosize = ((infosize + 7) / 8) * 8; 1261 tsize = infosize + nds * dssize; 1262 1263 /* Return just the total size required. */ 1264 if (where == NULL) { 1265 *sizep = tsize; 1266 return (0); 1267 } 1268 1269 /* Not enough room for even the info struct. */ 1270 if (buflen < infosize) { 1271 *sizep = 0; 1272 return (ENOMEM); 1273 } 1274 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1275 memset(buf, 0, min(tsize, buflen)); 1276 1277 switch (*name) { 1278 #ifdef SYSVMSG 1279 case KERN_SYSVIPC_MSG_INFO: 1280 msgsi = (struct msg_sysctl_info *)buf; 1281 msgsi->msginfo = msginfo; 1282 break; 1283 #endif 1284 #ifdef SYSVSEM 1285 case KERN_SYSVIPC_SEM_INFO: 1286 semsi = (struct sem_sysctl_info *)buf; 1287 semsi->seminfo = seminfo; 1288 break; 1289 #endif 1290 #ifdef SYSVSHM 1291 case KERN_SYSVIPC_SHM_INFO: 1292 shmsi = (struct shm_sysctl_info *)buf; 1293 shmsi->shminfo = shminfo; 1294 break; 1295 #endif 1296 } 1297 buflen -= infosize; 1298 1299 ret = 0; 1300 if (buflen > 0) { 1301 /* Fill in the IPC data structures. */ 1302 for (i = 0; i < nds; i++) { 1303 if (buflen < dssize) { 1304 ret = ENOMEM; 1305 break; 1306 } 1307 switch (*name) { 1308 #ifdef SYSVMSG 1309 case KERN_SYSVIPC_MSG_INFO: 1310 FILL_MSG(msqids[i], msgsi->msgids[i]); 1311 break; 1312 #endif 1313 #ifdef SYSVSEM 1314 case KERN_SYSVIPC_SEM_INFO: 1315 FILL_SEM(sema[i], semsi->semids[i]); 1316 break; 1317 #endif 1318 #ifdef SYSVSHM 1319 case KERN_SYSVIPC_SHM_INFO: 1320 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1321 break; 1322 #endif 1323 } 1324 buflen -= dssize; 1325 } 1326 } 1327 *sizep -= buflen; 1328 error = copyout(buf, start, *sizep); 1329 /* If copyout succeeded, use return code set earlier. */ 1330 if (error == 0) 1331 error = ret; 1332 if (buf) 1333 free(buf, M_TEMP); 1334 return (error); 1335 } 1336 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 1337 1338 static int 1339 sysctl_msgbuf(void *vwhere, size_t *sizep) 1340 { 1341 char *where = vwhere; 1342 size_t len, maxlen = *sizep; 1343 long beg, end; 1344 int error; 1345 1346 /* 1347 * deal with cases where the message buffer has 1348 * become corrupted. 1349 */ 1350 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1351 msgbufenabled = 0; 1352 return (ENXIO); 1353 } 1354 1355 if (where == NULL) { 1356 /* always return full buffer size */ 1357 *sizep = msgbufp->msg_bufs; 1358 return (0); 1359 } 1360 1361 error = 0; 1362 maxlen = min(msgbufp->msg_bufs, maxlen); 1363 1364 /* 1365 * First, copy from the write pointer to the end of 1366 * message buffer. 1367 */ 1368 beg = msgbufp->msg_bufx; 1369 end = msgbufp->msg_bufs; 1370 while (maxlen > 0) { 1371 len = min(end - beg, maxlen); 1372 if (len == 0) 1373 break; 1374 error = copyout(&msgbufp->msg_bufc[beg], where, len); 1375 if (error) 1376 break; 1377 where += len; 1378 maxlen -= len; 1379 1380 /* 1381 * ... then, copy from the beginning of message buffer to 1382 * the write pointer. 1383 */ 1384 beg = 0; 1385 end = msgbufp->msg_bufx; 1386 } 1387 return (error); 1388 } 1389 1390 /* 1391 * try over estimating by 5 procs 1392 */ 1393 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 1394 1395 static int 1396 sysctl_doeproc(int *name, u_int namelen, void *vwhere, size_t *sizep) 1397 { 1398 struct eproc eproc; 1399 struct kinfo_proc2 kproc2; 1400 struct kinfo_proc *dp; 1401 struct proc *p; 1402 const struct proclist_desc *pd; 1403 char *where, *dp2; 1404 int type, op, arg, elem_size, elem_count; 1405 int buflen, needed, error; 1406 1407 dp = vwhere; 1408 dp2 = where = vwhere; 1409 buflen = where != NULL ? *sizep : 0; 1410 error = needed = 0; 1411 type = name[0]; 1412 1413 if (type == KERN_PROC) { 1414 if (namelen != 3 && !(namelen == 2 && name[1] == KERN_PROC_ALL)) 1415 return (EINVAL); 1416 op = name[1]; 1417 if (op != KERN_PROC_ALL) 1418 arg = name[2]; 1419 } else { 1420 if (namelen != 5) 1421 return (EINVAL); 1422 op = name[1]; 1423 arg = name[2]; 1424 elem_size = name[3]; 1425 elem_count = name[4]; 1426 } 1427 1428 proclist_lock_read(); 1429 1430 pd = proclists; 1431 again: 1432 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1433 /* 1434 * Skip embryonic processes. 1435 */ 1436 if (p->p_stat == SIDL) 1437 continue; 1438 /* 1439 * TODO - make more efficient (see notes below). 1440 * do by session. 1441 */ 1442 switch (op) { 1443 1444 case KERN_PROC_PID: 1445 /* could do this with just a lookup */ 1446 if (p->p_pid != (pid_t)arg) 1447 continue; 1448 break; 1449 1450 case KERN_PROC_PGRP: 1451 /* could do this by traversing pgrp */ 1452 if (p->p_pgrp->pg_id != (pid_t)arg) 1453 continue; 1454 break; 1455 1456 case KERN_PROC_SESSION: 1457 if (p->p_session->s_sid != (pid_t)arg) 1458 continue; 1459 break; 1460 1461 case KERN_PROC_TTY: 1462 if (arg == KERN_PROC_TTY_REVOKE) { 1463 if ((p->p_flag & P_CONTROLT) == 0 || 1464 p->p_session->s_ttyp == NULL || 1465 p->p_session->s_ttyvp != NULL) 1466 continue; 1467 } else if ((p->p_flag & P_CONTROLT) == 0 || 1468 p->p_session->s_ttyp == NULL) { 1469 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1470 continue; 1471 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1472 continue; 1473 break; 1474 1475 case KERN_PROC_UID: 1476 if (p->p_ucred->cr_uid != (uid_t)arg) 1477 continue; 1478 break; 1479 1480 case KERN_PROC_RUID: 1481 if (p->p_cred->p_ruid != (uid_t)arg) 1482 continue; 1483 break; 1484 1485 case KERN_PROC_GID: 1486 if (p->p_ucred->cr_gid != (uid_t)arg) 1487 continue; 1488 break; 1489 1490 case KERN_PROC_RGID: 1491 if (p->p_cred->p_rgid != (uid_t)arg) 1492 continue; 1493 break; 1494 1495 case KERN_PROC_ALL: 1496 /* allow everything */ 1497 break; 1498 1499 default: 1500 error = EINVAL; 1501 goto cleanup; 1502 } 1503 if (type == KERN_PROC) { 1504 if (buflen >= sizeof(struct kinfo_proc)) { 1505 fill_eproc(p, &eproc); 1506 error = copyout((caddr_t)p, &dp->kp_proc, 1507 sizeof(struct proc)); 1508 if (error) 1509 goto cleanup; 1510 error = copyout((caddr_t)&eproc, &dp->kp_eproc, 1511 sizeof(eproc)); 1512 if (error) 1513 goto cleanup; 1514 dp++; 1515 buflen -= sizeof(struct kinfo_proc); 1516 } 1517 needed += sizeof(struct kinfo_proc); 1518 } else { /* KERN_PROC2 */ 1519 if (buflen >= elem_size && elem_count > 0) { 1520 fill_kproc2(p, &kproc2); 1521 /* 1522 * Copy out elem_size, but not larger than 1523 * the size of a struct kinfo_proc2. 1524 */ 1525 error = copyout(&kproc2, dp2, 1526 min(sizeof(kproc2), elem_size)); 1527 if (error) 1528 goto cleanup; 1529 dp2 += elem_size; 1530 buflen -= elem_size; 1531 elem_count--; 1532 } 1533 needed += elem_size; 1534 } 1535 } 1536 pd++; 1537 if (pd->pd_list != NULL) 1538 goto again; 1539 proclist_unlock_read(); 1540 1541 if (where != NULL) { 1542 if (type == KERN_PROC) 1543 *sizep = (caddr_t)dp - where; 1544 else 1545 *sizep = dp2 - where; 1546 if (needed > *sizep) 1547 return (ENOMEM); 1548 } else { 1549 needed += KERN_PROCSLOP; 1550 *sizep = needed; 1551 } 1552 return (0); 1553 cleanup: 1554 proclist_unlock_read(); 1555 return (error); 1556 } 1557 1558 /* 1559 * Fill in an eproc structure for the specified process. 1560 */ 1561 void 1562 fill_eproc(struct proc *p, struct eproc *ep) 1563 { 1564 struct tty *tp; 1565 1566 ep->e_paddr = p; 1567 ep->e_sess = p->p_session; 1568 ep->e_pcred = *p->p_cred; 1569 ep->e_ucred = *p->p_ucred; 1570 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1571 ep->e_vm.vm_rssize = 0; 1572 ep->e_vm.vm_tsize = 0; 1573 ep->e_vm.vm_dsize = 0; 1574 ep->e_vm.vm_ssize = 0; 1575 /* ep->e_vm.vm_pmap = XXX; */ 1576 } else { 1577 struct vmspace *vm = p->p_vmspace; 1578 1579 ep->e_vm.vm_rssize = vm_resident_count(vm); 1580 ep->e_vm.vm_tsize = vm->vm_tsize; 1581 ep->e_vm.vm_dsize = vm->vm_dsize; 1582 ep->e_vm.vm_ssize = vm->vm_ssize; 1583 } 1584 if (p->p_pptr) 1585 ep->e_ppid = p->p_pptr->p_pid; 1586 else 1587 ep->e_ppid = 0; 1588 ep->e_pgid = p->p_pgrp->pg_id; 1589 ep->e_sid = ep->e_sess->s_sid; 1590 ep->e_jobc = p->p_pgrp->pg_jobc; 1591 if ((p->p_flag & P_CONTROLT) && 1592 (tp = ep->e_sess->s_ttyp)) { 1593 ep->e_tdev = tp->t_dev; 1594 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1595 ep->e_tsess = tp->t_session; 1596 } else 1597 ep->e_tdev = NODEV; 1598 if (p->p_wmesg) 1599 strncpy(ep->e_wmesg, p->p_wmesg, WMESGLEN); 1600 ep->e_xsize = ep->e_xrssize = 0; 1601 ep->e_xccount = ep->e_xswrss = 0; 1602 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 1603 if (SESS_LEADER(p)) 1604 ep->e_flag |= EPROC_SLEADER; 1605 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 1606 } 1607 1608 /* 1609 * Fill in an eproc structure for the specified process. 1610 */ 1611 static void 1612 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 1613 { 1614 struct tty *tp; 1615 1616 memset(ki, 0, sizeof(*ki)); 1617 1618 ki->p_forw = PTRTOINT64(p->p_forw); 1619 ki->p_back = PTRTOINT64(p->p_back); 1620 ki->p_paddr = PTRTOINT64(p); 1621 1622 ki->p_addr = PTRTOINT64(p->p_addr); 1623 ki->p_fd = PTRTOINT64(p->p_fd); 1624 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 1625 ki->p_stats = PTRTOINT64(p->p_stats); 1626 ki->p_limit = PTRTOINT64(p->p_limit); 1627 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 1628 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 1629 ki->p_sess = PTRTOINT64(p->p_session); 1630 ki->p_tsess = 0; /* may be changed if controlling tty below */ 1631 ki->p_ru = PTRTOINT64(p->p_ru); 1632 1633 ki->p_eflag = 0; 1634 ki->p_exitsig = p->p_exitsig; 1635 ki->p_flag = p->p_flag; 1636 1637 ki->p_pid = p->p_pid; 1638 if (p->p_pptr) 1639 ki->p_ppid = p->p_pptr->p_pid; 1640 else 1641 ki->p_ppid = 0; 1642 ki->p_sid = p->p_session->s_sid; 1643 ki->p__pgid = p->p_pgrp->pg_id; 1644 1645 ki->p_tpgid = NO_PID; /* may be changed if controlling tty below */ 1646 1647 ki->p_uid = p->p_ucred->cr_uid; 1648 ki->p_ruid = p->p_cred->p_ruid; 1649 ki->p_gid = p->p_ucred->cr_gid; 1650 ki->p_rgid = p->p_cred->p_rgid; 1651 1652 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 1653 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 1654 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 1655 1656 ki->p_jobc = p->p_pgrp->pg_jobc; 1657 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 1658 ki->p_tdev = tp->t_dev; 1659 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1660 ki->p_tsess = PTRTOINT64(tp->t_session); 1661 } else { 1662 ki->p_tdev = NODEV; 1663 } 1664 1665 ki->p_estcpu = p->p_estcpu; 1666 ki->p_rtime_sec = p->p_rtime.tv_sec; 1667 ki->p_rtime_usec = p->p_rtime.tv_usec; 1668 ki->p_cpticks = p->p_cpticks; 1669 ki->p_pctcpu = p->p_pctcpu; 1670 ki->p_swtime = p->p_swtime; 1671 ki->p_slptime = p->p_slptime; 1672 if (p->p_stat == SONPROC) { 1673 KDASSERT(p->p_cpu != NULL); 1674 ki->p_schedflags = p->p_cpu->ci_schedstate.spc_flags; 1675 } else 1676 ki->p_schedflags = 0; 1677 1678 ki->p_uticks = p->p_uticks; 1679 ki->p_sticks = p->p_sticks; 1680 ki->p_iticks = p->p_iticks; 1681 1682 ki->p_tracep = PTRTOINT64(p->p_tracep); 1683 ki->p_traceflag = p->p_traceflag; 1684 1685 ki->p_holdcnt = p->p_holdcnt; 1686 1687 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 1688 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 1689 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 1690 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 1691 1692 ki->p_stat = p->p_stat; 1693 ki->p_priority = p->p_priority; 1694 ki->p_usrpri = p->p_usrpri; 1695 ki->p_nice = p->p_nice; 1696 1697 ki->p_xstat = p->p_xstat; 1698 ki->p_acflag = p->p_acflag; 1699 1700 strncpy(ki->p_comm, p->p_comm, 1701 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 1702 1703 if (p->p_wmesg) 1704 strncpy(ki->p_wmesg, p->p_wmesg, sizeof(ki->p_wmesg)); 1705 ki->p_wchan = PTRTOINT64(p->p_wchan); 1706 1707 strncpy(ki->p_login, p->p_session->s_login, sizeof(ki->p_login)); 1708 1709 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1710 ki->p_vm_rssize = 0; 1711 ki->p_vm_tsize = 0; 1712 ki->p_vm_dsize = 0; 1713 ki->p_vm_ssize = 0; 1714 } else { 1715 struct vmspace *vm = p->p_vmspace; 1716 1717 ki->p_vm_rssize = vm_resident_count(vm); 1718 ki->p_vm_tsize = vm->vm_tsize; 1719 ki->p_vm_dsize = vm->vm_dsize; 1720 ki->p_vm_ssize = vm->vm_ssize; 1721 } 1722 1723 if (p->p_session->s_ttyvp) 1724 ki->p_eflag |= EPROC_CTTY; 1725 if (SESS_LEADER(p)) 1726 ki->p_eflag |= EPROC_SLEADER; 1727 1728 /* XXX Is this double check necessary? */ 1729 if ((p->p_flag & P_INMEM) == 0 || P_ZOMBIE(p)) { 1730 ki->p_uvalid = 0; 1731 } else { 1732 ki->p_uvalid = 1; 1733 1734 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 1735 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 1736 1737 ki->p_uutime_sec = p->p_stats->p_ru.ru_utime.tv_sec; 1738 ki->p_uutime_usec = p->p_stats->p_ru.ru_utime.tv_usec; 1739 ki->p_ustime_sec = p->p_stats->p_ru.ru_stime.tv_sec; 1740 ki->p_ustime_usec = p->p_stats->p_ru.ru_stime.tv_usec; 1741 1742 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 1743 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 1744 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 1745 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 1746 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 1747 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 1748 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 1749 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 1750 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 1751 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 1752 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 1753 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 1754 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 1755 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 1756 1757 ki->p_uctime_sec = p->p_stats->p_cru.ru_utime.tv_sec + 1758 p->p_stats->p_cru.ru_stime.tv_sec; 1759 ki->p_uctime_usec = p->p_stats->p_cru.ru_utime.tv_usec + 1760 p->p_stats->p_cru.ru_stime.tv_usec; 1761 } 1762 #ifdef MULTIPROCESSOR 1763 if (p->p_cpu != NULL) 1764 ki->p_cpuid = p->p_cpu->ci_cpuid; 1765 else 1766 #endif 1767 ki->p_cpuid = KI_NOCPU; 1768 } 1769 1770 int 1771 sysctl_procargs(int *name, u_int namelen, void *where, size_t *sizep, 1772 struct proc *up) 1773 { 1774 struct ps_strings pss; 1775 struct proc *p; 1776 size_t len, upper_bound, xlen; 1777 struct uio auio; 1778 struct iovec aiov; 1779 vaddr_t argv; 1780 pid_t pid; 1781 int nargv, type, error, i; 1782 char *arg; 1783 char *tmp; 1784 1785 if (namelen != 2) 1786 return (EINVAL); 1787 pid = name[0]; 1788 type = name[1]; 1789 1790 switch (type) { 1791 case KERN_PROC_ARGV: 1792 case KERN_PROC_NARGV: 1793 case KERN_PROC_ENV: 1794 case KERN_PROC_NENV: 1795 /* ok */ 1796 break; 1797 default: 1798 return (EINVAL); 1799 } 1800 1801 /* check pid */ 1802 if ((p = pfind(pid)) == NULL) 1803 return (EINVAL); 1804 1805 /* only root or same user change look at the environment */ 1806 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1807 if (up->p_ucred->cr_uid != 0) { 1808 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1809 up->p_cred->p_ruid != p->p_cred->p_svuid) 1810 return (EPERM); 1811 } 1812 } 1813 1814 if (sizep != NULL && where == NULL) { 1815 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1816 *sizep = sizeof (int); 1817 else 1818 *sizep = ARG_MAX; /* XXX XXX XXX */ 1819 return (0); 1820 } 1821 if (where == NULL || sizep == NULL) 1822 return (EINVAL); 1823 1824 /* 1825 * Zombies don't have a stack, so we can't read their psstrings. 1826 * System processes also don't have a user stack. 1827 */ 1828 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1829 return (EINVAL); 1830 1831 /* 1832 * Lock the process down in memory. 1833 */ 1834 /* XXXCDC: how should locking work here? */ 1835 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1836 return (EFAULT); 1837 p->p_vmspace->vm_refcnt++; /* XXX */ 1838 1839 /* 1840 * Allocate a temporary buffer to hold the arguments. 1841 */ 1842 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1843 1844 /* 1845 * Read in the ps_strings structure. 1846 */ 1847 aiov.iov_base = &pss; 1848 aiov.iov_len = sizeof(pss); 1849 auio.uio_iov = &aiov; 1850 auio.uio_iovcnt = 1; 1851 auio.uio_offset = (vaddr_t)p->p_psstr; 1852 auio.uio_resid = sizeof(pss); 1853 auio.uio_segflg = UIO_SYSSPACE; 1854 auio.uio_rw = UIO_READ; 1855 auio.uio_procp = NULL; 1856 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1857 if (error) 1858 goto done; 1859 1860 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1861 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1862 else 1863 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1864 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1865 error = copyout(&nargv, where, sizeof(nargv)); 1866 *sizep = sizeof(nargv); 1867 goto done; 1868 } 1869 /* 1870 * Now read the address of the argument vector. 1871 */ 1872 switch (type) { 1873 case KERN_PROC_ARGV: 1874 /* XXX compat32 stuff here */ 1875 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1876 break; 1877 case KERN_PROC_ENV: 1878 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1879 break; 1880 default: 1881 return (EINVAL); 1882 } 1883 auio.uio_offset = (off_t)(long)tmp; 1884 aiov.iov_base = &argv; 1885 aiov.iov_len = sizeof(argv); 1886 auio.uio_iov = &aiov; 1887 auio.uio_iovcnt = 1; 1888 auio.uio_resid = sizeof(argv); 1889 auio.uio_segflg = UIO_SYSSPACE; 1890 auio.uio_rw = UIO_READ; 1891 auio.uio_procp = NULL; 1892 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1893 if (error) 1894 goto done; 1895 1896 /* 1897 * Now copy in the actual argument vector, one page at a time, 1898 * since we don't know how long the vector is (though, we do 1899 * know how many NUL-terminated strings are in the vector). 1900 */ 1901 len = 0; 1902 upper_bound = *sizep; 1903 for (; nargv != 0 && len < upper_bound; len += xlen) { 1904 aiov.iov_base = arg; 1905 aiov.iov_len = PAGE_SIZE; 1906 auio.uio_iov = &aiov; 1907 auio.uio_iovcnt = 1; 1908 auio.uio_offset = argv + len; 1909 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1910 auio.uio_resid = xlen; 1911 auio.uio_segflg = UIO_SYSSPACE; 1912 auio.uio_rw = UIO_READ; 1913 auio.uio_procp = NULL; 1914 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1915 if (error) 1916 goto done; 1917 1918 for (i = 0; i < xlen && nargv != 0; i++) { 1919 if (arg[i] == '\0') 1920 nargv--; /* one full string */ 1921 } 1922 1923 /* make sure we don't copyout past the end of the user's buffer */ 1924 if (len + i > upper_bound) 1925 i = upper_bound - len; 1926 1927 error = copyout(arg, (char *)where + len, i); 1928 if (error) 1929 break; 1930 1931 if (nargv == 0) { 1932 len += i; 1933 break; 1934 } 1935 } 1936 *sizep = len; 1937 1938 done: 1939 uvmspace_free(p->p_vmspace); 1940 1941 free(arg, M_TEMP); 1942 return (error); 1943 } 1944 1945 #if NPTY > 0 1946 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1947 1948 /* 1949 * Validate parameters and get old / set new parameters 1950 * for pty sysctl function. 1951 */ 1952 static int 1953 sysctl_pty(void *oldp, size_t *oldlenp, void *newp, size_t newlen) 1954 { 1955 int error = 0; 1956 int oldmax = 0, newmax = 0; 1957 1958 /* get current value of maxptys */ 1959 oldmax = pty_maxptys(0, 0); 1960 1961 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &oldmax, int) 1962 1963 if (!error && newp) { 1964 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 1965 SYSCTL_SCALAR_NEWPCOP_TYP(newp, &newmax, int) 1966 1967 if (newmax != pty_maxptys(newmax, (newp != NULL))) 1968 return (EINVAL); 1969 1970 } 1971 1972 return (error); 1973 } 1974 #endif /* NPTY > 0 */ 1975 1976 static int 1977 sysctl_dotkstat(name, namelen, where, sizep, newp) 1978 int *name; 1979 u_int namelen; 1980 void *where; 1981 size_t *sizep; 1982 void *newp; 1983 { 1984 /* all sysctl names at this level are terminal */ 1985 if (namelen != 1) 1986 return (ENOTDIR); /* overloaded */ 1987 1988 switch (name[0]) { 1989 case KERN_TKSTAT_NIN: 1990 return (sysctl_rdquad(where, sizep, newp, tk_nin)); 1991 case KERN_TKSTAT_NOUT: 1992 return (sysctl_rdquad(where, sizep, newp, tk_nout)); 1993 case KERN_TKSTAT_CANCC: 1994 return (sysctl_rdquad(where, sizep, newp, tk_cancc)); 1995 case KERN_TKSTAT_RAWCC: 1996 return (sysctl_rdquad(where, sizep, newp, tk_rawcc)); 1997 default: 1998 return (EOPNOTSUPP); 1999 } 2000 } 2001 2002 static int 2003 sysctl_dodev(name, namelen, oldp, oldlenp, newp, newlen, p) 2004 int *name; 2005 u_int namelen; 2006 void *oldp; 2007 size_t *oldlenp; 2008 void *newp; 2009 size_t newlen; 2010 struct proc *p; 2011 { 2012 /* no sysctl names at this level are terminal */ 2013 if (namelen < 1) 2014 return (ENOTDIR); /* overloaded */ 2015 2016 switch (name[0]) { 2017 #if NUBTBCMFW 2018 case HW_DEV_UBTBCMFW: 2019 return (hw_dev_ubtbcmfw_sysctl(name + 1, namelen - 1, 2020 oldp, oldlenp, newp, newlen, p)); 2021 #endif 2022 default: 2023 return (EOPNOTSUPP); 2024 } 2025 } 2026
Indexes created Tue Sep 30 06:09:59 GMT 2025