kern_sysctl.c revision 1.111
1 /* $NetBSD: kern_sysctl.c,v 1.111 2002/08/25 22:51:07 thorpej 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 1.111 2002/08/25 22:51:07 thorpej 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 size_t len, curlen; 719 u_int i; 720 721 if (namelen < 2) 722 return EINVAL; 723 724 if (name[0] == PROC_CURPROC) { 725 ptmp = p; 726 } else { 727 proclist_lock_read(); 728 for (pd = proclists; pd->pd_list != NULL; pd++) { 729 for (ptmp = LIST_FIRST(pd->pd_list); ptmp != NULL; 730 ptmp = LIST_NEXT(ptmp, p_list)) { 731 /* Skip embryonic processes. */ 732 if (ptmp->p_stat == SIDL) 733 continue; 734 if (ptmp->p_pid == (pid_t)name[0]) 735 break; 736 } 737 if (ptmp != NULL) 738 break; 739 } 740 proclist_unlock_read(); 741 if (ptmp == NULL) 742 return(ESRCH); 743 if (p->p_ucred->cr_uid != 0) { 744 if(p->p_cred->p_ruid != ptmp->p_cred->p_ruid || 745 p->p_cred->p_ruid != ptmp->p_cred->p_svuid) 746 return EPERM; 747 if (ptmp->p_cred->p_rgid != ptmp->p_cred->p_svgid) 748 return EPERM; /* sgid proc */ 749 for (i = 0; i < p->p_ucred->cr_ngroups; i++) { 750 if (p->p_ucred->cr_groups[i] == 751 ptmp->p_cred->p_rgid) 752 break; 753 } 754 if (i == p->p_ucred->cr_ngroups) 755 return EPERM; 756 } 757 } 758 if (name[1] == PROC_PID_CORENAME) { 759 if (namelen != 2) 760 return EINVAL; 761 /* 762 * Can't use sysctl_string() here because we may malloc a new 763 * area during the process, so we have to do it by hand. 764 */ 765 curlen = strlen(ptmp->p_limit->pl_corename) + 1; 766 if (oldlenp && *oldlenp < curlen) { 767 if (!oldp) 768 *oldlenp = curlen; 769 return (ENOMEM); 770 } 771 if (newp) { 772 if (securelevel > 2) 773 return EPERM; 774 if (newlen > MAXPATHLEN) 775 return ENAMETOOLONG; 776 tmps = malloc(newlen + 1, M_TEMP, M_WAITOK); 777 if (tmps == NULL) 778 return ENOMEM; 779 error = copyin(newp, tmps, newlen + 1); 780 tmps[newlen] = '\0'; 781 if (error) 782 goto cleanup; 783 /* Enforce to be either 'core' for end with '.core' */ 784 if (newlen < 4) { /* c.o.r.e */ 785 error = EINVAL; 786 goto cleanup; 787 } 788 len = newlen - 4; 789 if (len > 0) { 790 if (tmps[len - 1] != '.' && 791 tmps[len - 1] != '/') { 792 error = EINVAL; 793 goto cleanup; 794 } 795 } 796 if (strcmp(&tmps[len], "core") != 0) { 797 error = EINVAL; 798 goto cleanup; 799 } 800 } 801 if (oldp && oldlenp) { 802 *oldlenp = curlen; 803 error = copyout(ptmp->p_limit->pl_corename, oldp, 804 curlen); 805 } 806 if (newp && error == 0) { 807 /* if the 2 strings are identical, don't limcopy() */ 808 if (strcmp(tmps, ptmp->p_limit->pl_corename) == 0) { 809 error = 0; 810 goto cleanup; 811 } 812 if (ptmp->p_limit->p_refcnt > 1 && 813 (ptmp->p_limit->p_lflags & PL_SHAREMOD) == 0) { 814 newplim = limcopy(ptmp->p_limit); 815 limfree(ptmp->p_limit); 816 ptmp->p_limit = newplim; 817 } 818 if (ptmp->p_limit->pl_corename != defcorename) { 819 free(ptmp->p_limit->pl_corename, M_TEMP); 820 } 821 ptmp->p_limit->pl_corename = tmps; 822 return (0); 823 } 824 cleanup: 825 if (tmps) 826 free(tmps, M_TEMP); 827 return (error); 828 } 829 if (name[1] == PROC_PID_LIMIT) { 830 if (namelen != 4 || name[2] >= PROC_PID_LIMIT_MAXID) 831 return EINVAL; 832 memcpy(&alim, &ptmp->p_rlimit[name[2] - 1], sizeof(alim)); 833 if (name[3] == PROC_PID_LIMIT_TYPE_HARD) 834 error = sysctl_quad(oldp, oldlenp, newp, newlen, 835 &alim.rlim_max); 836 else if (name[3] == PROC_PID_LIMIT_TYPE_SOFT) 837 error = sysctl_quad(oldp, oldlenp, newp, newlen, 838 &alim.rlim_cur); 839 else 840 error = EINVAL; 841 842 if (error) 843 return error; 844 845 if (newp) 846 error = dosetrlimit(ptmp, p->p_cred, 847 name[2] - 1, &alim); 848 return error; 849 } 850 return (EINVAL); 851 } 852 853 int 854 emul_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 855 void *newp, size_t newlen, struct proc *p) 856 { 857 static struct { 858 const char *name; 859 int type; 860 } emulations[] = CTL_EMUL_NAMES; 861 const struct emul *e; 862 const char *ename; 863 #ifdef LKM 864 extern struct lock exec_lock; /* XXX */ 865 int error; 866 #else 867 extern int nexecs_builtin; 868 extern const struct execsw execsw_builtin[]; 869 int i; 870 #endif 871 872 /* all sysctl names at this level are name and field */ 873 if (namelen < 2) 874 return (ENOTDIR); /* overloaded */ 875 876 if ((u_int) name[0] >= EMUL_MAXID || name[0] == 0) 877 return (EOPNOTSUPP); 878 879 ename = emulations[name[0]].name; 880 881 #ifdef LKM 882 lockmgr(&exec_lock, LK_SHARED, NULL); 883 if ((e = emul_search(ename))) { 884 error = (*e->e_sysctl)(name + 1, namelen - 1, oldp, oldlenp, 885 newp, newlen, p); 886 } else 887 error = EOPNOTSUPP; 888 lockmgr(&exec_lock, LK_RELEASE, NULL); 889 890 return (error); 891 #else 892 for (i = 0; i < nexecs_builtin; i++) { 893 e = execsw_builtin[i].es_emul; 894 if (e == NULL || strcmp(ename, e->e_name) != 0 || 895 e->e_sysctl != NULL) 896 continue; 897 898 return (*e->e_sysctl)(name + 1, namelen - 1, oldp, oldlenp, 899 newp, newlen, p); 900 } 901 902 return (EOPNOTSUPP); 903 #endif 904 } 905 /* 906 * Convenience macros. 907 */ 908 909 #define SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, len) \ 910 if (oldlenp) { \ 911 if (!oldp) \ 912 *oldlenp = len; \ 913 else { \ 914 if (*oldlenp < len) \ 915 return(ENOMEM); \ 916 *oldlenp = len; \ 917 error = copyout((caddr_t)valp, oldp, len); \ 918 } \ 919 } 920 921 #define SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, typ) \ 922 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, valp, sizeof(typ)) 923 924 #define SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) \ 925 if (newp && newlen != len) \ 926 return (EINVAL); 927 928 #define SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, typ) \ 929 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, sizeof(typ)) 930 931 #define SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, len) \ 932 if (error == 0 && newp) \ 933 error = copyin(newp, valp, len); 934 935 #define SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, typ) \ 936 SYSCTL_SCALAR_NEWPCOP_LEN(newp, valp, sizeof(typ)) 937 938 #define SYSCTL_STRING_CORE(oldp, oldlenp, str) \ 939 if (oldlenp) { \ 940 len = strlen(str) + 1; \ 941 if (!oldp) \ 942 *oldlenp = len; \ 943 else { \ 944 if (*oldlenp < len) { \ 945 err2 = ENOMEM; \ 946 len = *oldlenp; \ 947 } else \ 948 *oldlenp = len; \ 949 error = copyout(str, oldp, len);\ 950 if (error == 0) \ 951 error = err2; \ 952 } \ 953 } 954 955 /* 956 * Validate parameters and get old / set new parameters 957 * for an integer-valued sysctl function. 958 */ 959 int 960 sysctl_int(void *oldp, size_t *oldlenp, void *newp, size_t newlen, int *valp) 961 { 962 int error = 0; 963 964 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 965 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, int) 966 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, int) 967 968 return (error); 969 } 970 971 972 /* 973 * As above, but read-only. 974 */ 975 int 976 sysctl_rdint(void *oldp, size_t *oldlenp, void *newp, int val) 977 { 978 int error = 0; 979 980 if (newp) 981 return (EPERM); 982 983 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, int) 984 985 return (error); 986 } 987 988 /* 989 * Validate parameters and get old / set new parameters 990 * for an quad-valued sysctl function. 991 */ 992 int 993 sysctl_quad(void *oldp, size_t *oldlenp, void *newp, size_t newlen, 994 quad_t *valp) 995 { 996 int error = 0; 997 998 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, quad_t) 999 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, valp, quad_t) 1000 SYSCTL_SCALAR_NEWPCOP_TYP(newp, valp, quad_t) 1001 1002 return (error); 1003 } 1004 1005 /* 1006 * As above, but read-only. 1007 */ 1008 int 1009 sysctl_rdquad(void *oldp, size_t *oldlenp, void *newp, quad_t val) 1010 { 1011 int error = 0; 1012 1013 if (newp) 1014 return (EPERM); 1015 1016 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &val, quad_t) 1017 1018 return (error); 1019 } 1020 1021 /* 1022 * Validate parameters and get old / set new parameters 1023 * for a string-valued sysctl function. 1024 */ 1025 int 1026 sysctl_string(void *oldp, size_t *oldlenp, void *newp, size_t newlen, char *str, 1027 size_t maxlen) 1028 { 1029 int error = 0, err2 = 0; 1030 size_t len; 1031 1032 if (newp && newlen >= maxlen) 1033 return (EINVAL); 1034 1035 SYSCTL_STRING_CORE(oldp, oldlenp, str); 1036 1037 if (error == 0 && newp) { 1038 error = copyin(newp, str, newlen); 1039 str[newlen] = 0; 1040 } 1041 return (error); 1042 } 1043 1044 /* 1045 * As above, but read-only. 1046 */ 1047 int 1048 sysctl_rdstring(void *oldp, size_t *oldlenp, void *newp, const char *str) 1049 { 1050 int error = 0, err2 = 0; 1051 size_t len; 1052 1053 if (newp) 1054 return (EPERM); 1055 1056 SYSCTL_STRING_CORE(oldp, oldlenp, str); 1057 1058 return (error); 1059 } 1060 1061 /* 1062 * Validate parameters and get old / set new parameters 1063 * for a structure oriented sysctl function. 1064 */ 1065 int 1066 sysctl_struct(void *oldp, size_t *oldlenp, void *newp, size_t newlen, void *sp, 1067 size_t len) 1068 { 1069 int error = 0; 1070 1071 SYSCTL_SCALAR_NEWPCHECK_LEN(newp, newlen, len) 1072 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1073 SYSCTL_SCALAR_NEWPCOP_LEN(newp, sp, len) 1074 1075 return (error); 1076 } 1077 1078 /* 1079 * Validate parameters and get old parameters 1080 * for a structure oriented sysctl function. 1081 */ 1082 int 1083 sysctl_rdstruct(void *oldp, size_t *oldlenp, void *newp, const void *sp, 1084 size_t len) 1085 { 1086 int error = 0; 1087 1088 if (newp) 1089 return (EPERM); 1090 1091 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1092 1093 return (error); 1094 } 1095 1096 /* 1097 * As above, but can return a truncated result. 1098 */ 1099 int 1100 sysctl_rdminstruct(void *oldp, size_t *oldlenp, void *newp, const void *sp, 1101 size_t len) 1102 { 1103 int error = 0; 1104 1105 if (newp) 1106 return (EPERM); 1107 1108 len = min(*oldlenp, len); 1109 SYSCTL_SCALAR_CORE_LEN(oldp, oldlenp, sp, len) 1110 1111 return (error); 1112 } 1113 1114 /* 1115 * Get file structures. 1116 */ 1117 static int 1118 sysctl_file(void *vwhere, size_t *sizep) 1119 { 1120 int error; 1121 size_t buflen; 1122 struct file *fp; 1123 char *start, *where; 1124 1125 start = where = vwhere; 1126 buflen = *sizep; 1127 if (where == NULL) { 1128 /* 1129 * overestimate by 10 files 1130 */ 1131 *sizep = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 1132 return (0); 1133 } 1134 1135 /* 1136 * first copyout filehead 1137 */ 1138 if (buflen < sizeof(filehead)) { 1139 *sizep = 0; 1140 return (0); 1141 } 1142 error = copyout((caddr_t)&filehead, where, sizeof(filehead)); 1143 if (error) 1144 return (error); 1145 buflen -= sizeof(filehead); 1146 where += sizeof(filehead); 1147 1148 /* 1149 * followed by an array of file structures 1150 */ 1151 for (fp = filehead.lh_first; fp != 0; fp = fp->f_list.le_next) { 1152 if (buflen < sizeof(struct file)) { 1153 *sizep = where - start; 1154 return (ENOMEM); 1155 } 1156 error = copyout((caddr_t)fp, where, sizeof(struct file)); 1157 if (error) 1158 return (error); 1159 buflen -= sizeof(struct file); 1160 where += sizeof(struct file); 1161 } 1162 *sizep = where - start; 1163 return (0); 1164 } 1165 1166 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1167 #define FILL_PERM(src, dst) do { \ 1168 (dst)._key = (src)._key; \ 1169 (dst).uid = (src).uid; \ 1170 (dst).gid = (src).gid; \ 1171 (dst).cuid = (src).cuid; \ 1172 (dst).cgid = (src).cgid; \ 1173 (dst).mode = (src).mode; \ 1174 (dst)._seq = (src)._seq; \ 1175 } while (0); 1176 #define FILL_MSG(src, dst) do { \ 1177 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1178 (dst).msg_qnum = (src).msg_qnum; \ 1179 (dst).msg_qbytes = (src).msg_qbytes; \ 1180 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1181 (dst).msg_lspid = (src).msg_lspid; \ 1182 (dst).msg_lrpid = (src).msg_lrpid; \ 1183 (dst).msg_stime = (src).msg_stime; \ 1184 (dst).msg_rtime = (src).msg_rtime; \ 1185 (dst).msg_ctime = (src).msg_ctime; \ 1186 } while (0) 1187 #define FILL_SEM(src, dst) do { \ 1188 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1189 (dst).sem_nsems = (src).sem_nsems; \ 1190 (dst).sem_otime = (src).sem_otime; \ 1191 (dst).sem_ctime = (src).sem_ctime; \ 1192 } while (0) 1193 #define FILL_SHM(src, dst) do { \ 1194 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1195 (dst).shm_segsz = (src).shm_segsz; \ 1196 (dst).shm_lpid = (src).shm_lpid; \ 1197 (dst).shm_cpid = (src).shm_cpid; \ 1198 (dst).shm_atime = (src).shm_atime; \ 1199 (dst).shm_dtime = (src).shm_dtime; \ 1200 (dst).shm_ctime = (src).shm_ctime; \ 1201 (dst).shm_nattch = (src).shm_nattch; \ 1202 } while (0) 1203 1204 static int 1205 sysctl_sysvipc(int *name, u_int namelen, void *where, size_t *sizep) 1206 { 1207 #ifdef SYSVMSG 1208 struct msg_sysctl_info *msgsi; 1209 #endif 1210 #ifdef SYSVSEM 1211 struct sem_sysctl_info *semsi; 1212 #endif 1213 #ifdef SYSVSHM 1214 struct shm_sysctl_info *shmsi; 1215 #endif 1216 size_t infosize, dssize, tsize, buflen; 1217 void *buf = NULL; 1218 char *start; 1219 int32_t nds; 1220 int i, error, ret; 1221 1222 if (namelen != 1) 1223 return (EINVAL); 1224 1225 start = where; 1226 buflen = *sizep; 1227 1228 switch (*name) { 1229 case KERN_SYSVIPC_MSG_INFO: 1230 #ifdef SYSVMSG 1231 infosize = sizeof(msgsi->msginfo); 1232 nds = msginfo.msgmni; 1233 dssize = sizeof(msgsi->msgids[0]); 1234 break; 1235 #else 1236 return (EINVAL); 1237 #endif 1238 case KERN_SYSVIPC_SEM_INFO: 1239 #ifdef SYSVSEM 1240 infosize = sizeof(semsi->seminfo); 1241 nds = seminfo.semmni; 1242 dssize = sizeof(semsi->semids[0]); 1243 break; 1244 #else 1245 return (EINVAL); 1246 #endif 1247 case KERN_SYSVIPC_SHM_INFO: 1248 #ifdef SYSVSHM 1249 infosize = sizeof(shmsi->shminfo); 1250 nds = shminfo.shmmni; 1251 dssize = sizeof(shmsi->shmids[0]); 1252 break; 1253 #else 1254 return (EINVAL); 1255 #endif 1256 default: 1257 return (EINVAL); 1258 } 1259 /* 1260 * Round infosize to 64 bit boundary if requesting more than just 1261 * the info structure or getting the total data size. 1262 */ 1263 if (where == NULL || *sizep > infosize) 1264 infosize = ((infosize + 7) / 8) * 8; 1265 tsize = infosize + nds * dssize; 1266 1267 /* Return just the total size required. */ 1268 if (where == NULL) { 1269 *sizep = tsize; 1270 return (0); 1271 } 1272 1273 /* Not enough room for even the info struct. */ 1274 if (buflen < infosize) { 1275 *sizep = 0; 1276 return (ENOMEM); 1277 } 1278 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1279 memset(buf, 0, min(tsize, buflen)); 1280 1281 switch (*name) { 1282 #ifdef SYSVMSG 1283 case KERN_SYSVIPC_MSG_INFO: 1284 msgsi = (struct msg_sysctl_info *)buf; 1285 msgsi->msginfo = msginfo; 1286 break; 1287 #endif 1288 #ifdef SYSVSEM 1289 case KERN_SYSVIPC_SEM_INFO: 1290 semsi = (struct sem_sysctl_info *)buf; 1291 semsi->seminfo = seminfo; 1292 break; 1293 #endif 1294 #ifdef SYSVSHM 1295 case KERN_SYSVIPC_SHM_INFO: 1296 shmsi = (struct shm_sysctl_info *)buf; 1297 shmsi->shminfo = shminfo; 1298 break; 1299 #endif 1300 } 1301 buflen -= infosize; 1302 1303 ret = 0; 1304 if (buflen > 0) { 1305 /* Fill in the IPC data structures. */ 1306 for (i = 0; i < nds; i++) { 1307 if (buflen < dssize) { 1308 ret = ENOMEM; 1309 break; 1310 } 1311 switch (*name) { 1312 #ifdef SYSVMSG 1313 case KERN_SYSVIPC_MSG_INFO: 1314 FILL_MSG(msqids[i], msgsi->msgids[i]); 1315 break; 1316 #endif 1317 #ifdef SYSVSEM 1318 case KERN_SYSVIPC_SEM_INFO: 1319 FILL_SEM(sema[i], semsi->semids[i]); 1320 break; 1321 #endif 1322 #ifdef SYSVSHM 1323 case KERN_SYSVIPC_SHM_INFO: 1324 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1325 break; 1326 #endif 1327 } 1328 buflen -= dssize; 1329 } 1330 } 1331 *sizep -= buflen; 1332 error = copyout(buf, start, *sizep); 1333 /* If copyout succeeded, use return code set earlier. */ 1334 if (error == 0) 1335 error = ret; 1336 if (buf) 1337 free(buf, M_TEMP); 1338 return (error); 1339 } 1340 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 1341 1342 static int 1343 sysctl_msgbuf(void *vwhere, size_t *sizep) 1344 { 1345 char *where = vwhere; 1346 size_t len, maxlen = *sizep; 1347 long beg, end; 1348 int error; 1349 1350 /* 1351 * deal with cases where the message buffer has 1352 * become corrupted. 1353 */ 1354 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1355 msgbufenabled = 0; 1356 return (ENXIO); 1357 } 1358 1359 if (where == NULL) { 1360 /* always return full buffer size */ 1361 *sizep = msgbufp->msg_bufs; 1362 return (0); 1363 } 1364 1365 error = 0; 1366 maxlen = min(msgbufp->msg_bufs, maxlen); 1367 1368 /* 1369 * First, copy from the write pointer to the end of 1370 * message buffer. 1371 */ 1372 beg = msgbufp->msg_bufx; 1373 end = msgbufp->msg_bufs; 1374 while (maxlen > 0) { 1375 len = min(end - beg, maxlen); 1376 if (len == 0) 1377 break; 1378 error = copyout(&msgbufp->msg_bufc[beg], where, len); 1379 if (error) 1380 break; 1381 where += len; 1382 maxlen -= len; 1383 1384 /* 1385 * ... then, copy from the beginning of message buffer to 1386 * the write pointer. 1387 */ 1388 beg = 0; 1389 end = msgbufp->msg_bufx; 1390 } 1391 return (error); 1392 } 1393 1394 /* 1395 * try over estimating by 5 procs 1396 */ 1397 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 1398 1399 static int 1400 sysctl_doeproc(int *name, u_int namelen, void *vwhere, size_t *sizep) 1401 { 1402 struct eproc eproc; 1403 struct kinfo_proc2 kproc2; 1404 struct kinfo_proc *dp; 1405 struct proc *p; 1406 const struct proclist_desc *pd; 1407 char *where, *dp2; 1408 int type, op, arg; 1409 u_int elem_size, elem_count; 1410 size_t buflen, needed; 1411 int error; 1412 1413 dp = vwhere; 1414 dp2 = where = vwhere; 1415 buflen = where != NULL ? *sizep : 0; 1416 error = 0; 1417 needed = 0; 1418 type = name[0]; 1419 1420 if (type == KERN_PROC) { 1421 if (namelen != 3 && !(namelen == 2 && name[1] == KERN_PROC_ALL)) 1422 return (EINVAL); 1423 op = name[1]; 1424 if (op != KERN_PROC_ALL) 1425 arg = name[2]; 1426 } else { 1427 if (namelen != 5) 1428 return (EINVAL); 1429 op = name[1]; 1430 arg = name[2]; 1431 elem_size = name[3]; 1432 elem_count = name[4]; 1433 } 1434 1435 proclist_lock_read(); 1436 1437 pd = proclists; 1438 again: 1439 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1440 /* 1441 * Skip embryonic processes. 1442 */ 1443 if (p->p_stat == SIDL) 1444 continue; 1445 /* 1446 * TODO - make more efficient (see notes below). 1447 * do by session. 1448 */ 1449 switch (op) { 1450 1451 case KERN_PROC_PID: 1452 /* could do this with just a lookup */ 1453 if (p->p_pid != (pid_t)arg) 1454 continue; 1455 break; 1456 1457 case KERN_PROC_PGRP: 1458 /* could do this by traversing pgrp */ 1459 if (p->p_pgrp->pg_id != (pid_t)arg) 1460 continue; 1461 break; 1462 1463 case KERN_PROC_SESSION: 1464 if (p->p_session->s_sid != (pid_t)arg) 1465 continue; 1466 break; 1467 1468 case KERN_PROC_TTY: 1469 if (arg == (int) KERN_PROC_TTY_REVOKE) { 1470 if ((p->p_flag & P_CONTROLT) == 0 || 1471 p->p_session->s_ttyp == NULL || 1472 p->p_session->s_ttyvp != NULL) 1473 continue; 1474 } else if ((p->p_flag & P_CONTROLT) == 0 || 1475 p->p_session->s_ttyp == NULL) { 1476 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1477 continue; 1478 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1479 continue; 1480 break; 1481 1482 case KERN_PROC_UID: 1483 if (p->p_ucred->cr_uid != (uid_t)arg) 1484 continue; 1485 break; 1486 1487 case KERN_PROC_RUID: 1488 if (p->p_cred->p_ruid != (uid_t)arg) 1489 continue; 1490 break; 1491 1492 case KERN_PROC_GID: 1493 if (p->p_ucred->cr_gid != (uid_t)arg) 1494 continue; 1495 break; 1496 1497 case KERN_PROC_RGID: 1498 if (p->p_cred->p_rgid != (uid_t)arg) 1499 continue; 1500 break; 1501 1502 case KERN_PROC_ALL: 1503 /* allow everything */ 1504 break; 1505 1506 default: 1507 error = EINVAL; 1508 goto cleanup; 1509 } 1510 if (type == KERN_PROC) { 1511 if (buflen >= sizeof(struct kinfo_proc)) { 1512 fill_eproc(p, &eproc); 1513 error = copyout((caddr_t)p, &dp->kp_proc, 1514 sizeof(struct proc)); 1515 if (error) 1516 goto cleanup; 1517 error = copyout((caddr_t)&eproc, &dp->kp_eproc, 1518 sizeof(eproc)); 1519 if (error) 1520 goto cleanup; 1521 dp++; 1522 buflen -= sizeof(struct kinfo_proc); 1523 } 1524 needed += sizeof(struct kinfo_proc); 1525 } else { /* KERN_PROC2 */ 1526 if (buflen >= elem_size && elem_count > 0) { 1527 fill_kproc2(p, &kproc2); 1528 /* 1529 * Copy out elem_size, but not larger than 1530 * the size of a struct kinfo_proc2. 1531 */ 1532 error = copyout(&kproc2, dp2, 1533 min(sizeof(kproc2), elem_size)); 1534 if (error) 1535 goto cleanup; 1536 dp2 += elem_size; 1537 buflen -= elem_size; 1538 elem_count--; 1539 } 1540 needed += elem_size; 1541 } 1542 } 1543 pd++; 1544 if (pd->pd_list != NULL) 1545 goto again; 1546 proclist_unlock_read(); 1547 1548 if (where != NULL) { 1549 if (type == KERN_PROC) 1550 *sizep = (caddr_t)dp - where; 1551 else 1552 *sizep = dp2 - where; 1553 if (needed > *sizep) 1554 return (ENOMEM); 1555 } else { 1556 needed += KERN_PROCSLOP; 1557 *sizep = needed; 1558 } 1559 return (0); 1560 cleanup: 1561 proclist_unlock_read(); 1562 return (error); 1563 } 1564 1565 /* 1566 * Fill in an eproc structure for the specified process. 1567 */ 1568 void 1569 fill_eproc(struct proc *p, struct eproc *ep) 1570 { 1571 struct tty *tp; 1572 1573 ep->e_paddr = p; 1574 ep->e_sess = p->p_session; 1575 ep->e_pcred = *p->p_cred; 1576 ep->e_ucred = *p->p_ucred; 1577 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1578 ep->e_vm.vm_rssize = 0; 1579 ep->e_vm.vm_tsize = 0; 1580 ep->e_vm.vm_dsize = 0; 1581 ep->e_vm.vm_ssize = 0; 1582 /* ep->e_vm.vm_pmap = XXX; */ 1583 } else { 1584 struct vmspace *vm = p->p_vmspace; 1585 1586 ep->e_vm.vm_rssize = vm_resident_count(vm); 1587 ep->e_vm.vm_tsize = vm->vm_tsize; 1588 ep->e_vm.vm_dsize = vm->vm_dsize; 1589 ep->e_vm.vm_ssize = vm->vm_ssize; 1590 } 1591 if (p->p_pptr) 1592 ep->e_ppid = p->p_pptr->p_pid; 1593 else 1594 ep->e_ppid = 0; 1595 ep->e_pgid = p->p_pgrp->pg_id; 1596 ep->e_sid = ep->e_sess->s_sid; 1597 ep->e_jobc = p->p_pgrp->pg_jobc; 1598 if ((p->p_flag & P_CONTROLT) && 1599 (tp = ep->e_sess->s_ttyp)) { 1600 ep->e_tdev = tp->t_dev; 1601 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1602 ep->e_tsess = tp->t_session; 1603 } else 1604 ep->e_tdev = NODEV; 1605 if (p->p_wmesg) 1606 strncpy(ep->e_wmesg, p->p_wmesg, WMESGLEN); 1607 ep->e_xsize = ep->e_xrssize = 0; 1608 ep->e_xccount = ep->e_xswrss = 0; 1609 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 1610 if (SESS_LEADER(p)) 1611 ep->e_flag |= EPROC_SLEADER; 1612 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 1613 } 1614 1615 /* 1616 * Fill in an eproc structure for the specified process. 1617 */ 1618 static void 1619 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 1620 { 1621 struct tty *tp; 1622 1623 memset(ki, 0, sizeof(*ki)); 1624 1625 ki->p_forw = PTRTOINT64(p->p_forw); 1626 ki->p_back = PTRTOINT64(p->p_back); 1627 ki->p_paddr = PTRTOINT64(p); 1628 1629 ki->p_addr = PTRTOINT64(p->p_addr); 1630 ki->p_fd = PTRTOINT64(p->p_fd); 1631 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 1632 ki->p_stats = PTRTOINT64(p->p_stats); 1633 ki->p_limit = PTRTOINT64(p->p_limit); 1634 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 1635 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 1636 ki->p_sess = PTRTOINT64(p->p_session); 1637 ki->p_tsess = 0; /* may be changed if controlling tty below */ 1638 ki->p_ru = PTRTOINT64(p->p_ru); 1639 1640 ki->p_eflag = 0; 1641 ki->p_exitsig = p->p_exitsig; 1642 ki->p_flag = p->p_flag; 1643 1644 ki->p_pid = p->p_pid; 1645 if (p->p_pptr) 1646 ki->p_ppid = p->p_pptr->p_pid; 1647 else 1648 ki->p_ppid = 0; 1649 ki->p_sid = p->p_session->s_sid; 1650 ki->p__pgid = p->p_pgrp->pg_id; 1651 1652 ki->p_tpgid = NO_PID; /* may be changed if controlling tty below */ 1653 1654 ki->p_uid = p->p_ucred->cr_uid; 1655 ki->p_ruid = p->p_cred->p_ruid; 1656 ki->p_gid = p->p_ucred->cr_gid; 1657 ki->p_rgid = p->p_cred->p_rgid; 1658 1659 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 1660 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 1661 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 1662 1663 ki->p_jobc = p->p_pgrp->pg_jobc; 1664 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 1665 ki->p_tdev = tp->t_dev; 1666 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 1667 ki->p_tsess = PTRTOINT64(tp->t_session); 1668 } else { 1669 ki->p_tdev = NODEV; 1670 } 1671 1672 ki->p_estcpu = p->p_estcpu; 1673 ki->p_rtime_sec = p->p_rtime.tv_sec; 1674 ki->p_rtime_usec = p->p_rtime.tv_usec; 1675 ki->p_cpticks = p->p_cpticks; 1676 ki->p_pctcpu = p->p_pctcpu; 1677 ki->p_swtime = p->p_swtime; 1678 ki->p_slptime = p->p_slptime; 1679 if (p->p_stat == SONPROC) { 1680 KDASSERT(p->p_cpu != NULL); 1681 ki->p_schedflags = p->p_cpu->ci_schedstate.spc_flags; 1682 } else 1683 ki->p_schedflags = 0; 1684 1685 ki->p_uticks = p->p_uticks; 1686 ki->p_sticks = p->p_sticks; 1687 ki->p_iticks = p->p_iticks; 1688 1689 ki->p_tracep = PTRTOINT64(p->p_tracep); 1690 ki->p_traceflag = p->p_traceflag; 1691 1692 ki->p_holdcnt = p->p_holdcnt; 1693 1694 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 1695 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 1696 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 1697 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 1698 1699 ki->p_stat = p->p_stat; 1700 ki->p_priority = p->p_priority; 1701 ki->p_usrpri = p->p_usrpri; 1702 ki->p_nice = p->p_nice; 1703 1704 ki->p_xstat = p->p_xstat; 1705 ki->p_acflag = p->p_acflag; 1706 1707 strncpy(ki->p_comm, p->p_comm, 1708 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 1709 1710 if (p->p_wmesg) 1711 strncpy(ki->p_wmesg, p->p_wmesg, sizeof(ki->p_wmesg)); 1712 ki->p_wchan = PTRTOINT64(p->p_wchan); 1713 1714 strncpy(ki->p_login, p->p_session->s_login, sizeof(ki->p_login)); 1715 1716 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 1717 ki->p_vm_rssize = 0; 1718 ki->p_vm_tsize = 0; 1719 ki->p_vm_dsize = 0; 1720 ki->p_vm_ssize = 0; 1721 } else { 1722 struct vmspace *vm = p->p_vmspace; 1723 1724 ki->p_vm_rssize = vm_resident_count(vm); 1725 ki->p_vm_tsize = vm->vm_tsize; 1726 ki->p_vm_dsize = vm->vm_dsize; 1727 ki->p_vm_ssize = vm->vm_ssize; 1728 } 1729 1730 if (p->p_session->s_ttyvp) 1731 ki->p_eflag |= EPROC_CTTY; 1732 if (SESS_LEADER(p)) 1733 ki->p_eflag |= EPROC_SLEADER; 1734 1735 /* XXX Is this double check necessary? */ 1736 if ((p->p_flag & P_INMEM) == 0 || P_ZOMBIE(p)) { 1737 ki->p_uvalid = 0; 1738 } else { 1739 ki->p_uvalid = 1; 1740 1741 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 1742 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 1743 1744 ki->p_uutime_sec = p->p_stats->p_ru.ru_utime.tv_sec; 1745 ki->p_uutime_usec = p->p_stats->p_ru.ru_utime.tv_usec; 1746 ki->p_ustime_sec = p->p_stats->p_ru.ru_stime.tv_sec; 1747 ki->p_ustime_usec = p->p_stats->p_ru.ru_stime.tv_usec; 1748 1749 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 1750 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 1751 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 1752 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 1753 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 1754 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 1755 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 1756 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 1757 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 1758 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 1759 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 1760 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 1761 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 1762 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 1763 1764 ki->p_uctime_sec = p->p_stats->p_cru.ru_utime.tv_sec + 1765 p->p_stats->p_cru.ru_stime.tv_sec; 1766 ki->p_uctime_usec = p->p_stats->p_cru.ru_utime.tv_usec + 1767 p->p_stats->p_cru.ru_stime.tv_usec; 1768 } 1769 #ifdef MULTIPROCESSOR 1770 if (p->p_cpu != NULL) 1771 ki->p_cpuid = p->p_cpu->ci_cpuid; 1772 else 1773 #endif 1774 ki->p_cpuid = KI_NOCPU; 1775 } 1776 1777 int 1778 sysctl_procargs(int *name, u_int namelen, void *where, size_t *sizep, 1779 struct proc *up) 1780 { 1781 struct ps_strings pss; 1782 struct proc *p; 1783 size_t len, upper_bound, xlen, i; 1784 struct uio auio; 1785 struct iovec aiov; 1786 vaddr_t argv; 1787 pid_t pid; 1788 int nargv, type, error; 1789 char *arg; 1790 char *tmp; 1791 1792 if (namelen != 2) 1793 return (EINVAL); 1794 pid = name[0]; 1795 type = name[1]; 1796 1797 switch (type) { 1798 case KERN_PROC_ARGV: 1799 case KERN_PROC_NARGV: 1800 case KERN_PROC_ENV: 1801 case KERN_PROC_NENV: 1802 /* ok */ 1803 break; 1804 default: 1805 return (EINVAL); 1806 } 1807 1808 /* check pid */ 1809 if ((p = pfind(pid)) == NULL) 1810 return (EINVAL); 1811 1812 /* only root or same user change look at the environment */ 1813 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1814 if (up->p_ucred->cr_uid != 0) { 1815 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1816 up->p_cred->p_ruid != p->p_cred->p_svuid) 1817 return (EPERM); 1818 } 1819 } 1820 1821 if (sizep != NULL && where == NULL) { 1822 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1823 *sizep = sizeof (int); 1824 else 1825 *sizep = ARG_MAX; /* XXX XXX XXX */ 1826 return (0); 1827 } 1828 if (where == NULL || sizep == NULL) 1829 return (EINVAL); 1830 1831 /* 1832 * Zombies don't have a stack, so we can't read their psstrings. 1833 * System processes also don't have a user stack. 1834 */ 1835 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1836 return (EINVAL); 1837 1838 /* 1839 * Lock the process down in memory. 1840 */ 1841 /* XXXCDC: how should locking work here? */ 1842 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1843 return (EFAULT); 1844 p->p_vmspace->vm_refcnt++; /* XXX */ 1845 1846 /* 1847 * Allocate a temporary buffer to hold the arguments. 1848 */ 1849 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1850 1851 /* 1852 * Read in the ps_strings structure. 1853 */ 1854 aiov.iov_base = &pss; 1855 aiov.iov_len = sizeof(pss); 1856 auio.uio_iov = &aiov; 1857 auio.uio_iovcnt = 1; 1858 auio.uio_offset = (vaddr_t)p->p_psstr; 1859 auio.uio_resid = sizeof(pss); 1860 auio.uio_segflg = UIO_SYSSPACE; 1861 auio.uio_rw = UIO_READ; 1862 auio.uio_procp = NULL; 1863 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1864 if (error) 1865 goto done; 1866 1867 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1868 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1869 else 1870 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1871 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1872 error = copyout(&nargv, where, sizeof(nargv)); 1873 *sizep = sizeof(nargv); 1874 goto done; 1875 } 1876 /* 1877 * Now read the address of the argument vector. 1878 */ 1879 switch (type) { 1880 case KERN_PROC_ARGV: 1881 /* XXX compat32 stuff here */ 1882 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1883 break; 1884 case KERN_PROC_ENV: 1885 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1886 break; 1887 default: 1888 return (EINVAL); 1889 } 1890 auio.uio_offset = (off_t)(long)tmp; 1891 aiov.iov_base = &argv; 1892 aiov.iov_len = sizeof(argv); 1893 auio.uio_iov = &aiov; 1894 auio.uio_iovcnt = 1; 1895 auio.uio_resid = sizeof(argv); 1896 auio.uio_segflg = UIO_SYSSPACE; 1897 auio.uio_rw = UIO_READ; 1898 auio.uio_procp = NULL; 1899 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1900 if (error) 1901 goto done; 1902 1903 /* 1904 * Now copy in the actual argument vector, one page at a time, 1905 * since we don't know how long the vector is (though, we do 1906 * know how many NUL-terminated strings are in the vector). 1907 */ 1908 len = 0; 1909 upper_bound = *sizep; 1910 for (; nargv != 0 && len < upper_bound; len += xlen) { 1911 aiov.iov_base = arg; 1912 aiov.iov_len = PAGE_SIZE; 1913 auio.uio_iov = &aiov; 1914 auio.uio_iovcnt = 1; 1915 auio.uio_offset = argv + len; 1916 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1917 auio.uio_resid = xlen; 1918 auio.uio_segflg = UIO_SYSSPACE; 1919 auio.uio_rw = UIO_READ; 1920 auio.uio_procp = NULL; 1921 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1922 if (error) 1923 goto done; 1924 1925 for (i = 0; i < xlen && nargv != 0; i++) { 1926 if (arg[i] == '\0') 1927 nargv--; /* one full string */ 1928 } 1929 1930 /* 1931 * Make sure we don't copyout past the end of the user's 1932 * buffer. 1933 */ 1934 if (len + i > upper_bound) 1935 i = upper_bound - len; 1936 1937 error = copyout(arg, (char *)where + len, i); 1938 if (error) 1939 break; 1940 1941 if (nargv == 0) { 1942 len += i; 1943 break; 1944 } 1945 } 1946 *sizep = len; 1947 1948 done: 1949 uvmspace_free(p->p_vmspace); 1950 1951 free(arg, M_TEMP); 1952 return (error); 1953 } 1954 1955 #if NPTY > 0 1956 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1957 1958 /* 1959 * Validate parameters and get old / set new parameters 1960 * for pty sysctl function. 1961 */ 1962 static int 1963 sysctl_pty(void *oldp, size_t *oldlenp, void *newp, size_t newlen) 1964 { 1965 int error = 0; 1966 int oldmax = 0, newmax = 0; 1967 1968 /* get current value of maxptys */ 1969 oldmax = pty_maxptys(0, 0); 1970 1971 SYSCTL_SCALAR_CORE_TYP(oldp, oldlenp, &oldmax, int) 1972 1973 if (!error && newp) { 1974 SYSCTL_SCALAR_NEWPCHECK_TYP(newp, newlen, int) 1975 SYSCTL_SCALAR_NEWPCOP_TYP(newp, &newmax, int) 1976 1977 if (newmax != pty_maxptys(newmax, (newp != NULL))) 1978 return (EINVAL); 1979 1980 } 1981 1982 return (error); 1983 } 1984 #endif /* NPTY > 0 */ 1985 1986 static int 1987 sysctl_dotkstat(name, namelen, where, sizep, newp) 1988 int *name; 1989 u_int namelen; 1990 void *where; 1991 size_t *sizep; 1992 void *newp; 1993 { 1994 /* all sysctl names at this level are terminal */ 1995 if (namelen != 1) 1996 return (ENOTDIR); /* overloaded */ 1997 1998 switch (name[0]) { 1999 case KERN_TKSTAT_NIN: 2000 return (sysctl_rdquad(where, sizep, newp, tk_nin)); 2001 case KERN_TKSTAT_NOUT: 2002 return (sysctl_rdquad(where, sizep, newp, tk_nout)); 2003 case KERN_TKSTAT_CANCC: 2004 return (sysctl_rdquad(where, sizep, newp, tk_cancc)); 2005 case KERN_TKSTAT_RAWCC: 2006 return (sysctl_rdquad(where, sizep, newp, tk_rawcc)); 2007 default: 2008 return (EOPNOTSUPP); 2009 } 2010 } 2011 2012 static int 2013 sysctl_dodev(name, namelen, oldp, oldlenp, newp, newlen, p) 2014 int *name; 2015 u_int namelen; 2016 void *oldp; 2017 size_t *oldlenp; 2018 void *newp; 2019 size_t newlen; 2020 struct proc *p; 2021 { 2022 /* no sysctl names at this level are terminal */ 2023 if (namelen < 1) 2024 return (ENOTDIR); /* overloaded */ 2025 2026 switch (name[0]) { 2027 #if NUBTBCMFW 2028 case HW_DEV_UBTBCMFW: 2029 return (hw_dev_ubtbcmfw_sysctl(name + 1, namelen - 1, 2030 oldp, oldlenp, newp, newlen, p)); 2031 #endif 2032 default: 2033 return (EOPNOTSUPP); 2034 } 2035 } 2036
Indexes created Tue Sep 30 07:10:03 GMT 2025