init_sysctl.c revision 1.23
1 /* $NetBSD: init_sysctl.c,v 1.23 2004/03/17 10:21:59 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Brown. 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 NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: init_sysctl.c,v 1.23 2004/03/17 10:21:59 yamt Exp $"); 41 42 #include "opt_sysv.h" 43 #include "opt_multiprocessor.h" 44 #include "opt_posix.h" 45 #include "pty.h" 46 #include "rnd.h" 47 48 #include <sys/types.h> 49 #include <sys/param.h> 50 #include <sys/sysctl.h> 51 #include <sys/errno.h> 52 #include <sys/systm.h> 53 #include <sys/kernel.h> 54 #include <sys/unistd.h> 55 #include <sys/disklabel.h> 56 #include <sys/rnd.h> 57 #include <sys/vnode.h> 58 #include <sys/mount.h> 59 #include <sys/namei.h> 60 #include <sys/msgbuf.h> 61 #include <dev/cons.h> 62 #include <sys/socketvar.h> 63 #include <sys/file.h> 64 #include <sys/tty.h> 65 #include <sys/malloc.h> 66 #include <sys/resource.h> 67 #include <sys/resourcevar.h> 68 #include <sys/exec.h> 69 #include <sys/conf.h> 70 #include <sys/device.h> 71 72 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 73 #include <sys/ipc.h> 74 #endif 75 #ifdef SYSVMSG 76 #include <sys/msg.h> 77 #endif 78 #ifdef SYSVSEM 79 #include <sys/sem.h> 80 #endif 81 #ifdef SYSVSHM 82 #include <sys/shm.h> 83 #endif 84 85 #include <machine/cpu.h> 86 87 /* 88 * try over estimating by 5 procs/lwps 89 */ 90 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 91 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 92 93 #ifndef MULTIPROCESSOR 94 #define sysctl_ncpus() (1) 95 #else /* MULTIPROCESSOR */ 96 #ifndef CPU_INFO_FOREACH 97 #define CPU_INFO_ITERATOR int 98 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 99 #endif 100 static int 101 sysctl_ncpus(void) 102 { 103 struct cpu_info *ci; 104 CPU_INFO_ITERATOR cii; 105 106 int ncpus = 0; 107 for (CPU_INFO_FOREACH(cii, ci)) 108 ncpus++; 109 return (ncpus); 110 } 111 #endif /* MULTIPROCESSOR */ 112 113 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 114 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 115 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 116 static int sysctl_kern_securelevel(SYSCTLFN_PROTO); 117 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 118 static int sysctl_setlen(SYSCTLFN_PROTO); 119 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 120 static int sysctl_kern_file(SYSCTLFN_PROTO); 121 static int sysctl_kern_autonice(SYSCTLFN_PROTO); 122 static int sysctl_msgbuf(SYSCTLFN_PROTO); 123 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 124 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 125 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 126 static int sysctl_kern_sysvipc(SYSCTLFN_PROTO); 127 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 128 #if NPTY > 0 129 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 130 #endif /* NPTY > 0 */ 131 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 132 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 133 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 134 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 135 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 136 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 137 static int sysctl_doeproc(SYSCTLFN_PROTO); 138 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 139 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 140 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 141 static int sysctl_hw_ncpu(SYSCTLFN_PROTO); 142 143 static void fill_kproc2(struct proc *, struct kinfo_proc2 *); 144 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 145 146 /* 147 * ******************************************************************** 148 * section 1: setup routines 149 * ******************************************************************** 150 * these functions are stuffed into a link set for sysctl setup 151 * functions. they're never called or referenced from anywhere else. 152 * ******************************************************************** 153 */ 154 155 /* 156 * sets up the base nodes... 157 */ 158 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 159 { 160 161 sysctl_createv(SYSCTL_PERMANENT, 162 CTLTYPE_NODE, "kern", NULL, 163 NULL, 0, NULL, 0, 164 CTL_KERN, CTL_EOL); 165 sysctl_createv(SYSCTL_PERMANENT, 166 CTLTYPE_NODE, "vm", NULL, 167 NULL, 0, NULL, 0, 168 CTL_VM, CTL_EOL); 169 sysctl_createv(SYSCTL_PERMANENT, 170 CTLTYPE_NODE, "vfs", NULL, 171 NULL, 0, NULL, 0, 172 CTL_VFS, CTL_EOL); 173 sysctl_createv(SYSCTL_PERMANENT, 174 CTLTYPE_NODE, "net", NULL, 175 NULL, 0, NULL, 0, 176 CTL_NET, CTL_EOL); 177 sysctl_createv(SYSCTL_PERMANENT, 178 CTLTYPE_NODE, "debug", NULL, 179 NULL, 0, NULL, 0, 180 CTL_DEBUG, CTL_EOL); 181 sysctl_createv(SYSCTL_PERMANENT, 182 CTLTYPE_NODE, "hw", NULL, 183 NULL, 0, NULL, 0, 184 CTL_HW, CTL_EOL); 185 sysctl_createv(SYSCTL_PERMANENT, 186 CTLTYPE_NODE, "machdep", NULL, 187 NULL, 0, NULL, 0, 188 CTL_MACHDEP, CTL_EOL); 189 /* 190 * this node is inserted so that the sysctl nodes in libc can 191 * operate. 192 */ 193 sysctl_createv(SYSCTL_PERMANENT, 194 CTLTYPE_NODE, "user", NULL, 195 NULL, 0, NULL, 0, 196 CTL_USER, CTL_EOL); 197 sysctl_createv(SYSCTL_PERMANENT, 198 CTLTYPE_NODE, "ddb", NULL, 199 NULL, 0, NULL, 0, 200 CTL_DDB, CTL_EOL); 201 sysctl_createv(SYSCTL_PERMANENT, 202 CTLTYPE_NODE, "proc", NULL, 203 NULL, 0, NULL, 0, 204 CTL_PROC, CTL_EOL); 205 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 206 CTLTYPE_NODE, "vendor", NULL, 207 NULL, 0, NULL, 0, 208 CTL_VENDOR, CTL_EOL); 209 sysctl_createv(SYSCTL_PERMANENT, 210 CTLTYPE_NODE, "emul", NULL, 211 NULL, 0, NULL, 0, 212 CTL_EMUL, CTL_EOL); 213 } 214 215 /* 216 * this setup routine is a replacement for kern_sysctl() 217 */ 218 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 219 { 220 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 221 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 222 extern int dumponpanic; /* defined in kern/subr_prf.c */ 223 224 sysctl_createv(SYSCTL_PERMANENT, 225 CTLTYPE_NODE, "kern", NULL, 226 NULL, 0, NULL, 0, 227 CTL_KERN, CTL_EOL); 228 229 sysctl_createv(SYSCTL_PERMANENT, 230 CTLTYPE_STRING, "ostype", NULL, 231 NULL, 0, &ostype, 0, 232 CTL_KERN, KERN_OSTYPE, CTL_EOL); 233 sysctl_createv(SYSCTL_PERMANENT, 234 CTLTYPE_STRING, "osrelease", NULL, 235 NULL, 0, &osrelease, 0, 236 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 237 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 238 CTLTYPE_INT, "osrevision", NULL, 239 NULL, __NetBSD_Version__, NULL, 0, 240 CTL_KERN, KERN_OSREV, CTL_EOL); 241 sysctl_createv(SYSCTL_PERMANENT, 242 CTLTYPE_STRING, "version", NULL, 243 NULL, 0, &version, 0, 244 CTL_KERN, KERN_VERSION, CTL_EOL); 245 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 246 CTLTYPE_INT, "maxvnodes", NULL, 247 sysctl_kern_maxvnodes, 0, NULL, 0, 248 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 249 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 250 CTLTYPE_INT, "maxproc", NULL, 251 sysctl_kern_maxproc, 0, NULL, 0, 252 CTL_KERN, KERN_MAXPROC, CTL_EOL); 253 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 254 CTLTYPE_INT, "maxfiles", NULL, 255 NULL, 0, &maxfiles, 0, 256 CTL_KERN, KERN_MAXFILES, CTL_EOL); 257 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 258 CTLTYPE_INT, "argmax", NULL, 259 NULL, ARG_MAX, NULL, 0, 260 CTL_KERN, KERN_ARGMAX, CTL_EOL); 261 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 262 CTLTYPE_INT, "securelevel", NULL, 263 sysctl_kern_securelevel, 0, &securelevel, 0, 264 CTL_KERN, KERN_SECURELVL, CTL_EOL); 265 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 266 CTLTYPE_STRING, "hostname", NULL, 267 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 268 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 269 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 270 CTLTYPE_INT, "hostid", NULL, 271 sysctl_kern_hostid, 0, NULL, 0, 272 CTL_KERN, KERN_HOSTID, CTL_EOL); 273 sysctl_createv(SYSCTL_PERMANENT, 274 CTLTYPE_STRUCT, "clockrate", NULL, 275 sysctl_kern_clockrate, 0, NULL, 276 sizeof(struct clockinfo), 277 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 278 sysctl_createv(SYSCTL_PERMANENT, 279 CTLTYPE_STRUCT, "vnode", NULL, 280 sysctl_kern_vnode, 0, NULL, 0, 281 CTL_KERN, KERN_VNODE, CTL_EOL); 282 sysctl_createv(SYSCTL_PERMANENT, 283 CTLTYPE_STRUCT, "file", NULL, 284 sysctl_kern_file, 0, NULL, 0, 285 CTL_KERN, KERN_FILE, CTL_EOL); 286 #ifndef GPROF 287 sysctl_createv(SYSCTL_PERMANENT, 288 CTLTYPE_NODE, "profiling", NULL, 289 sysctl_notavail, 0, NULL, 0, 290 CTL_KERN, KERN_PROF, CTL_EOL); 291 #endif 292 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 293 CTLTYPE_INT, "posix1version", NULL, 294 NULL, _POSIX_VERSION, NULL, 0, 295 CTL_KERN, KERN_POSIX1, CTL_EOL); 296 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 297 CTLTYPE_INT, "ngroups", NULL, 298 NULL, NGROUPS_MAX, NULL, 0, 299 CTL_KERN, KERN_NGROUPS, CTL_EOL); 300 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 301 CTLTYPE_INT, "job_control", NULL, 302 NULL, 1, NULL, 0, 303 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 304 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 305 CTLTYPE_INT, "saved_ids", NULL, NULL, 306 #ifdef _POSIX_SAVED_IDS 307 1, 308 #else /* _POSIX_SAVED_IDS */ 309 0, 310 #endif /* _POSIX_SAVED_IDS */ 311 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 312 sysctl_createv(SYSCTL_PERMANENT, 313 CTLTYPE_STRUCT, "boottime", NULL, 314 NULL, 0, &boottime, sizeof(boottime), 315 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 316 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 317 CTLTYPE_STRING, "domainname", NULL, 318 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 319 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 320 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 321 CTLTYPE_INT, "maxpartitions", NULL, 322 NULL, MAXPARTITIONS, NULL, 0, 323 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 324 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 325 CTLTYPE_INT, "rawpartition", NULL, 326 NULL, RAW_PART, NULL, 0, 327 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 328 sysctl_createv(SYSCTL_PERMANENT, 329 CTLTYPE_STRUCT, "timex", NULL, 330 sysctl_notavail, 0, NULL, 0, 331 CTL_KERN, KERN_TIMEX, CTL_EOL); 332 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 333 CTLTYPE_INT, "autonicetime", NULL, 334 sysctl_kern_autonice, 0, &autonicetime, 0, 335 CTL_KERN, KERN_AUTONICETIME, CTL_EOL); 336 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 337 CTLTYPE_INT, "autoniceval", NULL, 338 sysctl_kern_autonice, 0, &autoniceval, 0, 339 CTL_KERN, KERN_AUTONICEVAL, CTL_EOL); 340 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 341 CTLTYPE_INT, "rtc_offset", NULL, 342 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 343 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 344 sysctl_createv(SYSCTL_PERMANENT, 345 CTLTYPE_STRING, "root_device", NULL, 346 sysctl_root_device, 0, NULL, 0, 347 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 348 sysctl_createv(SYSCTL_PERMANENT, 349 CTLTYPE_INT, "msgbufsize", NULL, 350 sysctl_msgbuf, 0, &msgbufp->msg_bufs, 0, 351 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 352 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 353 CTLTYPE_INT, "fsync", NULL, 354 NULL, 1, NULL, 0, 355 CTL_KERN, KERN_FSYNC, CTL_EOL); 356 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 357 CTLTYPE_INT, "sysvmsg", NULL, NULL, 358 #ifdef SYSVMSG 359 1, 360 #else /* SYSVMSG */ 361 0, 362 #endif /* SYSVMSG */ 363 NULL, 0, CTL_KERN, KERN_SYSVMSG, CTL_EOL); 364 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 365 CTLTYPE_INT, "sysvsem", NULL, NULL, 366 #ifdef SYSVSEM 367 1, 368 #else /* SYSVSEM */ 369 0, 370 #endif /* SYSVSEM */ 371 NULL, 0, CTL_KERN, KERN_SYSVSEM, CTL_EOL); 372 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 373 CTLTYPE_INT, "sysvshm", NULL, NULL, 374 #ifdef SYSVSHM 375 1, 376 #else /* SYSVSHM */ 377 0, 378 #endif /* SYSVSHM */ 379 NULL, 0, CTL_KERN, KERN_SYSVSHM, CTL_EOL); 380 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 381 CTLTYPE_INT, "synchronized_io", NULL, 382 NULL, 1, NULL, 0, 383 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 384 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 385 CTLTYPE_INT, "iov_max", NULL, 386 NULL, IOV_MAX, NULL, 0, 387 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 388 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 389 CTLTYPE_INT, "mapped_files", NULL, 390 NULL, 1, NULL, 0, 391 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 392 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 393 CTLTYPE_INT, "memlock", NULL, 394 NULL, 1, NULL, 0, 395 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 396 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 397 CTLTYPE_INT, "memlock_range", NULL, 398 NULL, 1, NULL, 0, 399 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 400 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 401 CTLTYPE_INT, "memory_protection", NULL, 402 NULL, 1, NULL, 0, 403 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 404 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 405 CTLTYPE_INT, "login_name_max", NULL, 406 NULL, LOGIN_NAME_MAX, NULL, 0, 407 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 408 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 409 CTLTYPE_STRING, "defcorename", NULL, 410 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 411 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 412 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 413 CTLTYPE_INT, "logsigexit", NULL, 414 NULL, 0, &kern_logsigexit, 0, 415 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 416 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 417 CTLTYPE_INT, "fscale", NULL, 418 NULL, FSCALE, NULL, 0, 419 CTL_KERN, KERN_FSCALE, CTL_EOL); 420 sysctl_createv(SYSCTL_PERMANENT, 421 CTLTYPE_INT, "ccpu", NULL, 422 NULL, 0, &ccpu, 0, 423 CTL_KERN, KERN_CCPU, CTL_EOL); 424 sysctl_createv(SYSCTL_PERMANENT, 425 CTLTYPE_STRUCT, "cp_time", NULL, 426 sysctl_kern_cptime, 0, NULL, 0, 427 CTL_KERN, KERN_CP_TIME, CTL_EOL); 428 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 429 sysctl_createv(SYSCTL_PERMANENT, 430 CTLTYPE_STRUCT, "sysvipc_info", NULL, 431 sysctl_kern_sysvipc, 0, NULL, 0, 432 CTL_KERN, KERN_SYSVIPC_INFO, CTL_EOL); 433 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 434 sysctl_createv(SYSCTL_PERMANENT, 435 CTLTYPE_INT, "msgbuf", NULL, 436 sysctl_msgbuf, 0, NULL, 0, 437 CTL_KERN, KERN_MSGBUF, CTL_EOL); 438 sysctl_createv(SYSCTL_PERMANENT, 439 CTLTYPE_STRUCT, "consdev", NULL, 440 sysctl_consdev, 0, NULL, sizeof(dev_t), 441 CTL_KERN, KERN_CONSDEV, CTL_EOL); 442 #if NPTY > 0 443 sysctl_createv(SYSCTL_PERMANENT, 444 CTLTYPE_INT, "maxptys", NULL, 445 sysctl_kern_maxptys, 0, NULL, 0, 446 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 447 #endif /* NPTY > 0 */ 448 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 449 CTLTYPE_INT, "maxphys", NULL, 450 NULL, MAXPHYS, NULL, 0, 451 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 452 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 453 CTLTYPE_INT, "sbmax", NULL, 454 sysctl_kern_sbmax, 0, NULL, 0, 455 CTL_KERN, KERN_SBMAX, CTL_EOL); 456 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 457 CTLTYPE_INT, "monotonic_clock", NULL, 458 /* XXX _POSIX_VERSION */ 459 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 460 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 461 sysctl_createv(SYSCTL_PERMANENT, 462 CTLTYPE_INT, "urandom", NULL, 463 sysctl_kern_urnd, 0, NULL, 0, 464 CTL_KERN, KERN_URND, CTL_EOL); 465 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 466 CTLTYPE_INT, "labelsector", NULL, 467 NULL, LABELSECTOR, NULL, 0, 468 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 469 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 470 CTLTYPE_INT, "labeloffset", NULL, 471 NULL, LABELOFFSET, NULL, 0, 472 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 473 sysctl_createv(SYSCTL_PERMANENT, 474 CTLTYPE_NODE, "lwp", NULL, 475 sysctl_kern_lwp, 0, NULL, 0, 476 CTL_KERN, KERN_LWP, CTL_EOL); 477 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 478 CTLTYPE_INT, "forkfsleep", NULL, 479 sysctl_kern_forkfsleep, 0, NULL, 0, 480 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 481 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 482 CTLTYPE_INT, "posix_threads", NULL, 483 /* XXX _POSIX_VERSION */ 484 NULL, _POSIX_THREADS, NULL, 0, 485 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 486 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 487 CTLTYPE_INT, "posix_semaphores", NULL, NULL, 488 #ifdef P1003_1B_SEMAPHORE 489 200112, 490 #else /* P1003_1B_SEMAPHORE */ 491 0, 492 #endif /* P1003_1B_SEMAPHORE */ 493 NULL, 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 494 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 495 CTLTYPE_INT, "posix_barriers", NULL, 496 /* XXX _POSIX_VERSION */ 497 NULL, _POSIX_BARRIERS, NULL, 0, 498 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 499 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 500 CTLTYPE_INT, "posix_timers", NULL, 501 /* XXX _POSIX_VERSION */ 502 NULL, _POSIX_TIMERS, NULL, 0, 503 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 504 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 505 CTLTYPE_INT, "posix_spin_locks", NULL, 506 /* XXX _POSIX_VERSION */ 507 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 508 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 509 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 510 CTLTYPE_INT, "posix_reader_writer_locks", NULL, 511 /* XXX _POSIX_VERSION */ 512 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 513 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 514 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 515 CTLTYPE_INT, "dump_on_panic", NULL, 516 NULL, 0, &dumponpanic, 0, 517 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 518 sysctl_createv(SYSCTL_PERMANENT, 519 CTLTYPE_INT, "root_partition", NULL, 520 sysctl_kern_root_partition, 0, NULL, 0, 521 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 522 sysctl_createv(SYSCTL_PERMANENT, 523 CTLTYPE_STRUCT, "drivers", NULL, 524 sysctl_kern_drivers, 0, NULL, 0, 525 CTL_KERN, KERN_DRIVERS, CTL_EOL); 526 } 527 528 SYSCTL_SETUP(sysctl_kern_proc_setup, 529 "sysctl kern.proc/proc2/proc_args subtree setup") 530 { 531 532 sysctl_createv(SYSCTL_PERMANENT, 533 CTLTYPE_NODE, "kern", NULL, 534 NULL, 0, NULL, 0, 535 CTL_KERN, CTL_EOL); 536 537 sysctl_createv(SYSCTL_PERMANENT, 538 CTLTYPE_NODE, "proc", NULL, 539 sysctl_doeproc, 0, NULL, 0, 540 CTL_KERN, KERN_PROC, CTL_EOL); 541 sysctl_createv(SYSCTL_PERMANENT, 542 CTLTYPE_NODE, "proc2", NULL, 543 sysctl_doeproc, 0, NULL, 0, 544 CTL_KERN, KERN_PROC2, CTL_EOL); 545 sysctl_createv(SYSCTL_PERMANENT, 546 CTLTYPE_NODE, "proc_args", NULL, 547 sysctl_kern_proc_args, 0, NULL, 0, 548 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 549 550 /* 551 "nodes" under these: 552 553 KERN_PROC_ALL 554 KERN_PROC_PID pid 555 KERN_PROC_PGRP pgrp 556 KERN_PROC_SESSION sess 557 KERN_PROC_TTY tty 558 KERN_PROC_UID uid 559 KERN_PROC_RUID uid 560 KERN_PROC_GID gid 561 KERN_PROC_RGID gid 562 563 all in all, probably not worth the effort... 564 */ 565 } 566 567 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 568 { 569 u_int u; 570 u_quad_t q; 571 572 sysctl_createv(SYSCTL_PERMANENT, 573 CTLTYPE_NODE, "hw", NULL, 574 NULL, 0, NULL, 0, 575 CTL_HW, CTL_EOL); 576 577 sysctl_createv(SYSCTL_PERMANENT, 578 CTLTYPE_STRING, "machine", NULL, 579 NULL, 0, machine, 0, 580 CTL_HW, HW_MACHINE, CTL_EOL); 581 sysctl_createv(SYSCTL_PERMANENT, 582 CTLTYPE_STRING, "model", NULL, 583 NULL, 0, cpu_model, 0, 584 CTL_HW, HW_MODEL, CTL_EOL); 585 sysctl_createv(SYSCTL_PERMANENT, 586 CTLTYPE_INT, "ncpu", NULL, 587 sysctl_hw_ncpu, 0, NULL, 0, 588 CTL_HW, HW_NCPU, CTL_EOL); 589 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 590 CTLTYPE_INT, "byteorder", NULL, 591 NULL, BYTE_ORDER, NULL, 0, 592 CTL_HW, HW_BYTEORDER, CTL_EOL); 593 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 594 UINT_MAX : physmem * PAGE_SIZE; 595 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 596 CTLTYPE_INT, "physmem", NULL, 597 NULL, u, NULL, 0, 598 CTL_HW, HW_PHYSMEM, CTL_EOL); 599 sysctl_createv(SYSCTL_PERMANENT, 600 CTLTYPE_INT, "usermem", NULL, 601 sysctl_hw_usermem, 0, NULL, 0, 602 CTL_HW, HW_USERMEM, CTL_EOL); 603 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 604 CTLTYPE_INT, "pagesize", NULL, 605 NULL, PAGE_SIZE, NULL, 0, 606 CTL_HW, HW_PAGESIZE, CTL_EOL); 607 sysctl_createv(SYSCTL_PERMANENT, 608 CTLTYPE_STRING, "disknames", NULL, 609 sysctl_hw_disknames, 0, NULL, 0, 610 CTL_HW, HW_DISKNAMES, CTL_EOL); 611 sysctl_createv(SYSCTL_PERMANENT, 612 CTLTYPE_STRUCT, "diskstats", NULL, 613 sysctl_hw_diskstats, 0, NULL, 0, 614 CTL_HW, HW_DISKSTATS, CTL_EOL); 615 sysctl_createv(SYSCTL_PERMANENT, 616 CTLTYPE_STRING, "machine_arch", NULL, 617 NULL, 0, machine_arch, 0, 618 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 619 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 620 CTLTYPE_INT, "alignbytes", NULL, 621 NULL, ALIGNBYTES, NULL, 0, 622 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 623 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE|SYSCTL_HEX, 624 CTLTYPE_STRING, "cnmagic", NULL, 625 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 626 CTL_HW, HW_CNMAGIC, CTL_EOL); 627 q = (u_quad_t)physmem * PAGE_SIZE; 628 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 629 CTLTYPE_QUAD, "physmem64", NULL, 630 NULL, q, NULL, 0, 631 CTL_HW, HW_PHYSMEM64, CTL_EOL); 632 sysctl_createv(SYSCTL_PERMANENT, 633 CTLTYPE_QUAD, "usermem64", NULL, 634 sysctl_hw_usermem, 0, NULL, 0, 635 CTL_HW, HW_USERMEM64, CTL_EOL); 636 } 637 638 #ifdef DEBUG 639 /* 640 * Debugging related system variables. 641 */ 642 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 643 struct ctldebug debug5, debug6, debug7, debug8, debug9; 644 struct ctldebug debug10, debug11, debug12, debug13, debug14; 645 struct ctldebug debug15, debug16, debug17, debug18, debug19; 646 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 647 &debug0, &debug1, &debug2, &debug3, &debug4, 648 &debug5, &debug6, &debug7, &debug8, &debug9, 649 &debug10, &debug11, &debug12, &debug13, &debug14, 650 &debug15, &debug16, &debug17, &debug18, &debug19, 651 }; 652 653 /* 654 * this setup routine is a replacement for debug_sysctl() 655 * 656 * note that it creates several nodes per defined debug variable 657 */ 658 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 659 { 660 struct ctldebug *cdp; 661 char nodename[20]; 662 int i; 663 664 /* 665 * two ways here: 666 * 667 * the "old" way (debug.name -> value) which was emulated by 668 * the sysctl(8) binary 669 * 670 * the new way, which the sysctl(8) binary was actually using 671 672 node debug 673 node debug.0 674 string debug.0.name 675 int debug.0.value 676 int debug.name 677 678 */ 679 680 sysctl_createv(SYSCTL_PERMANENT, 681 CTLTYPE_NODE, "debug", NULL, 682 NULL, 0, NULL, 0, 683 CTL_DEBUG, CTL_EOL); 684 685 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 686 cdp = debugvars[i]; 687 if (cdp->debugname == NULL || cdp->debugvar == NULL) 688 continue; 689 690 snprintf(nodename, sizeof(nodename), "debug%d", i); 691 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 692 CTLTYPE_NODE, nodename, NULL, 693 NULL, 0, NULL, 0, 694 CTL_DEBUG, i, CTL_EOL); 695 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 696 CTLTYPE_STRING, "name", NULL, 697 NULL, 0, cdp->debugname, 0, 698 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 699 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 700 CTLTYPE_INT, "value", NULL, 701 NULL, 0, cdp->debugvar, 0, 702 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 703 sysctl_createv(SYSCTL_PERMANENT, 704 CTLTYPE_INT, cdp->debugname, NULL, 705 NULL, 0, cdp->debugvar, 0, 706 CTL_DEBUG, CTL_CREATE, CTL_EOL); 707 } 708 } 709 #endif /* DEBUG */ 710 711 /* 712 * ******************************************************************** 713 * section 2: private node-specific helper routines. 714 * ******************************************************************** 715 */ 716 717 /* 718 * sysctl helper routine for kern.maxvnodes. drain vnodes if 719 * new value is lower than desiredvnodes and then calls reinit 720 * routines that needs to adjust to the new value. 721 */ 722 static int 723 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 724 { 725 int error, new_vnodes, old_vnodes; 726 struct sysctlnode node; 727 728 new_vnodes = desiredvnodes; 729 node = *rnode; 730 node.sysctl_data = &new_vnodes; 731 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 732 if (error || newp == NULL) 733 return (error); 734 735 old_vnodes = desiredvnodes; 736 desiredvnodes = new_vnodes; 737 if (new_vnodes < old_vnodes) { 738 error = vfs_drainvnodes(new_vnodes, l->l_proc); 739 if (error) { 740 desiredvnodes = old_vnodes; 741 return (error); 742 } 743 } 744 vfs_reinit(); 745 nchreinit(); 746 747 return (0); 748 } 749 750 /* 751 * sysctl helper routine for rtc_offset - set time after changes 752 */ 753 static int 754 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 755 { 756 struct timeval tv, delta; 757 int s, error, new_rtc_offset; 758 struct sysctlnode node; 759 760 new_rtc_offset = rtc_offset; 761 node = *rnode; 762 node.sysctl_data = &new_rtc_offset; 763 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 764 if (error || newp == NULL) 765 return (error); 766 767 if (securelevel > 0) 768 return (EPERM); 769 if (rtc_offset == new_rtc_offset) 770 return (0); 771 772 /* if we change the offset, adjust the time */ 773 s = splclock(); 774 tv = time; 775 splx(s); 776 delta.tv_sec = 60*(new_rtc_offset - rtc_offset); 777 delta.tv_usec = 0; 778 timeradd(&tv, &delta, &tv); 779 rtc_offset = new_rtc_offset; 780 settime(&tv); 781 782 return (0); 783 } 784 785 /* 786 * sysctl helper routine for kern.maxvnodes. ensures that the new 787 * values are not too low or too high. 788 */ 789 static int 790 sysctl_kern_maxproc(SYSCTLFN_ARGS) 791 { 792 int error, nmaxproc; 793 struct sysctlnode node; 794 795 nmaxproc = maxproc; 796 node = *rnode; 797 node.sysctl_data = &nmaxproc; 798 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 799 if (error || newp == NULL) 800 return (error); 801 802 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 803 return (EINVAL); 804 #ifdef __HAVE_CPU_MAXPROC 805 if (nmaxproc > cpu_maxproc()) 806 return (EINVAL); 807 #endif 808 maxproc = nmaxproc; 809 810 return (0); 811 } 812 813 /* 814 * sysctl helper routine for kern.securelevel. ensures that the value 815 * only rises unless the caller has pid 1 (assumed to be init). 816 */ 817 static int 818 sysctl_kern_securelevel(SYSCTLFN_ARGS) 819 { 820 int newsecurelevel, error; 821 struct sysctlnode node; 822 823 newsecurelevel = securelevel; 824 node = *rnode; 825 node.sysctl_data = &newsecurelevel; 826 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 827 if (error || newp == NULL) 828 return (error); 829 830 if (newsecurelevel < securelevel && l && l->l_proc->p_pid != 1) 831 return (EPERM); 832 securelevel = newsecurelevel; 833 834 return (error); 835 } 836 837 /* 838 * sysctl helper function for kern.hostid. the hostid is a long, but 839 * we export it as an int, so we need to give it a little help. 840 */ 841 static int 842 sysctl_kern_hostid(SYSCTLFN_ARGS) 843 { 844 int error, inthostid; 845 struct sysctlnode node; 846 847 inthostid = hostid; /* XXX assumes sizeof int >= sizeof long */ 848 node = *rnode; 849 node.sysctl_data = &inthostid; 850 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 851 if (error || newp == NULL) 852 return (error); 853 854 hostid = inthostid; 855 856 return (0); 857 } 858 859 /* 860 * sysctl helper function for kern.hostname and kern.domainnname. 861 * resets the relevant recorded length when the underlying name is 862 * changed. 863 */ 864 static int 865 sysctl_setlen(SYSCTLFN_ARGS) 866 { 867 int error; 868 869 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 870 if (error || newp == NULL) 871 return (error); 872 873 switch (rnode->sysctl_num) { 874 case KERN_HOSTNAME: 875 hostnamelen = strlen((const char*)rnode->sysctl_data); 876 break; 877 case KERN_DOMAINNAME: 878 domainnamelen = strlen((const char*)rnode->sysctl_data); 879 break; 880 } 881 882 return (0); 883 } 884 885 /* 886 * sysctl helper routine for kern.clockrate. assembles a struct on 887 * the fly to be returned to the caller. 888 */ 889 static int 890 sysctl_kern_clockrate(SYSCTLFN_ARGS) 891 { 892 struct clockinfo clkinfo; 893 struct sysctlnode node; 894 895 clkinfo.tick = tick; 896 clkinfo.tickadj = tickadj; 897 clkinfo.hz = hz; 898 clkinfo.profhz = profhz; 899 clkinfo.stathz = stathz ? stathz : hz; 900 901 node = *rnode; 902 node.sysctl_data = &clkinfo; 903 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 904 } 905 906 907 /* 908 * sysctl helper routine for kern.file pseudo-subtree. 909 */ 910 static int 911 sysctl_kern_file(SYSCTLFN_ARGS) 912 { 913 int error; 914 size_t buflen; 915 struct file *fp; 916 char *start, *where; 917 918 start = where = oldp; 919 buflen = *oldlenp; 920 if (where == NULL) { 921 /* 922 * overestimate by 10 files 923 */ 924 *oldlenp = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 925 return (0); 926 } 927 928 /* 929 * first copyout filehead 930 */ 931 if (buflen < sizeof(filehead)) { 932 *oldlenp = 0; 933 return (0); 934 } 935 error = copyout(&filehead, where, sizeof(filehead)); 936 if (error) 937 return (error); 938 buflen -= sizeof(filehead); 939 where += sizeof(filehead); 940 941 /* 942 * followed by an array of file structures 943 */ 944 LIST_FOREACH(fp, &filehead, f_list) { 945 if (buflen < sizeof(struct file)) { 946 *oldlenp = where - start; 947 return (ENOMEM); 948 } 949 error = copyout(fp, where, sizeof(struct file)); 950 if (error) 951 return (error); 952 buflen -= sizeof(struct file); 953 where += sizeof(struct file); 954 } 955 *oldlenp = where - start; 956 return (0); 957 } 958 959 /* 960 * sysctl helper routine for kern.autonicetime and kern.autoniceval. 961 * asserts that the assigned value is in the correct range. 962 */ 963 static int 964 sysctl_kern_autonice(SYSCTLFN_ARGS) 965 { 966 int error, t = 0; 967 struct sysctlnode node; 968 969 node = *rnode; 970 t = *(int*)node.sysctl_data; 971 node.sysctl_data = &t; 972 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 973 if (error || newp == NULL) 974 return (error); 975 976 switch (node.sysctl_num) { 977 case KERN_AUTONICETIME: 978 if (t >= 0) 979 autonicetime = t; 980 break; 981 case KERN_AUTONICEVAL: 982 if (t < PRIO_MIN) 983 t = PRIO_MIN; 984 else if (t > PRIO_MAX) 985 t = PRIO_MAX; 986 autoniceval = t; 987 break; 988 } 989 990 return (0); 991 } 992 993 /* 994 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. for the 995 * former it merely checks the the message buffer is set up. for the 996 * latter, it also copies out the data if necessary. 997 */ 998 static int 999 sysctl_msgbuf(SYSCTLFN_ARGS) 1000 { 1001 char *where = oldp; 1002 size_t len, maxlen; 1003 long beg, end; 1004 int error; 1005 1006 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1007 msgbufenabled = 0; 1008 return (ENXIO); 1009 } 1010 1011 switch (rnode->sysctl_num) { 1012 case KERN_MSGBUFSIZE: 1013 return (sysctl_lookup(SYSCTLFN_CALL(rnode))); 1014 case KERN_MSGBUF: 1015 break; 1016 default: 1017 return (EOPNOTSUPP); 1018 } 1019 1020 if (newp != NULL) 1021 return (EPERM); 1022 1023 if (oldp == NULL) { 1024 /* always return full buffer size */ 1025 *oldlenp = msgbufp->msg_bufs; 1026 return (0); 1027 } 1028 1029 error = 0; 1030 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1031 1032 /* 1033 * First, copy from the write pointer to the end of 1034 * message buffer. 1035 */ 1036 beg = msgbufp->msg_bufx; 1037 end = msgbufp->msg_bufs; 1038 while (maxlen > 0) { 1039 len = MIN(end - beg, maxlen); 1040 if (len == 0) 1041 break; 1042 error = copyout(&msgbufp->msg_bufc[beg], where, len); 1043 if (error) 1044 break; 1045 where += len; 1046 maxlen -= len; 1047 1048 /* 1049 * ... then, copy from the beginning of message buffer to 1050 * the write pointer. 1051 */ 1052 beg = 0; 1053 end = msgbufp->msg_bufx; 1054 } 1055 1056 return (error); 1057 } 1058 1059 /* 1060 * sysctl helper routine for kern.defcorename. in the case of a new 1061 * string being assigned, check that it's not a zero-length string. 1062 * (XXX the check in -current doesn't work, but do we really care?) 1063 */ 1064 static int 1065 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1066 { 1067 int error; 1068 char newcorename[MAXPATHLEN]; 1069 struct sysctlnode node; 1070 1071 node = *rnode; 1072 node.sysctl_data = &newcorename[0]; 1073 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1074 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1075 if (error || newp == NULL) 1076 return (error); 1077 1078 /* 1079 * when sysctl_lookup() deals with a string, it's guaranteed 1080 * to come back nul terminated. so there. :) 1081 */ 1082 if (strlen(newcorename) == 0) 1083 return (EINVAL); 1084 1085 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1086 1087 return (0); 1088 } 1089 1090 /* 1091 * sysctl helper routine for kern.cp_time node. adds up cpu time 1092 * across all cpus. 1093 */ 1094 static int 1095 sysctl_kern_cptime(SYSCTLFN_ARGS) 1096 { 1097 struct sysctlnode node = *rnode; 1098 1099 #ifndef MULTIPROCESSOR 1100 1101 if (namelen == 1) { 1102 if (name[0] != 0) 1103 return (ENOENT); 1104 /* 1105 * you're allowed to ask for the zero'th processor 1106 */ 1107 name++; 1108 namelen--; 1109 } 1110 node.sysctl_data = curcpu()->ci_schedstate.spc_cp_time; 1111 node.sysctl_size = sizeof(curcpu()->ci_schedstate.spc_cp_time); 1112 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1113 1114 #else /* MULTIPROCESSOR */ 1115 1116 u_int64_t *cp_time = NULL; 1117 int error, n = sysctl_ncpus(), i; 1118 struct cpu_info *ci; 1119 CPU_INFO_ITERATOR cii; 1120 1121 /* 1122 * if you specifically pass a buffer that is the size of the 1123 * sum, or if you are probing for the size, you get the "sum" 1124 * of cp_time (and the size thereof) across all processors. 1125 * 1126 * alternately, you can pass an additional mib number and get 1127 * cp_time for that particular processor. 1128 */ 1129 switch (namelen) { 1130 case 0: 1131 if (*oldlenp == sizeof(u_int64_t) * CPUSTATES || oldp == NULL) { 1132 node.sysctl_size = sizeof(u_int64_t) * CPUSTATES; 1133 n = -1; /* SUM */ 1134 } 1135 else { 1136 node.sysctl_size = n * sizeof(u_int64_t) * CPUSTATES; 1137 n = -2; /* ALL */ 1138 } 1139 break; 1140 case 1: 1141 if (name[0] < 0 || name[0] >= n) 1142 return (ENOENT); /* ENOSUCHPROCESSOR */ 1143 node.sysctl_size = sizeof(u_int64_t) * CPUSTATES; 1144 n = name[0]; 1145 /* 1146 * adjust these so that sysctl_lookup() will be happy 1147 */ 1148 name++; 1149 namelen--; 1150 break; 1151 default: 1152 return (EINVAL); 1153 } 1154 1155 cp_time = malloc(node.sysctl_size, M_TEMP, M_WAITOK|M_CANFAIL); 1156 if (cp_time == NULL) 1157 return (ENOMEM); 1158 node.sysctl_data = cp_time; 1159 memset(cp_time, 0, node.sysctl_size); 1160 1161 for (CPU_INFO_FOREACH(cii, ci)) { 1162 if (n <= 0) 1163 for (i = 0; i < CPUSTATES; i++) 1164 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1165 /* 1166 * if a specific processor was requested and we just 1167 * did it, we're done here 1168 */ 1169 if (n == 0) 1170 break; 1171 /* 1172 * if doing "all", skip to next cp_time set for next processor 1173 */ 1174 if (n == -2) 1175 cp_time += CPUSTATES; 1176 /* 1177 * if we're doing a specific processor, we're one 1178 * processor closer 1179 */ 1180 if (n > 0) 1181 n--; 1182 } 1183 1184 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1185 free(node.sysctl_data, M_TEMP); 1186 return (error); 1187 1188 #endif /* MULTIPROCESSOR */ 1189 } 1190 1191 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1192 /* 1193 * sysctl helper routine for kern.sysvipc_info subtree. 1194 */ 1195 1196 #define FILL_PERM(src, dst) do { \ 1197 (dst)._key = (src)._key; \ 1198 (dst).uid = (src).uid; \ 1199 (dst).gid = (src).gid; \ 1200 (dst).cuid = (src).cuid; \ 1201 (dst).cgid = (src).cgid; \ 1202 (dst).mode = (src).mode; \ 1203 (dst)._seq = (src)._seq; \ 1204 } while (/*CONSTCOND*/ 0); 1205 #define FILL_MSG(src, dst) do { \ 1206 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1207 (dst).msg_qnum = (src).msg_qnum; \ 1208 (dst).msg_qbytes = (src).msg_qbytes; \ 1209 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1210 (dst).msg_lspid = (src).msg_lspid; \ 1211 (dst).msg_lrpid = (src).msg_lrpid; \ 1212 (dst).msg_stime = (src).msg_stime; \ 1213 (dst).msg_rtime = (src).msg_rtime; \ 1214 (dst).msg_ctime = (src).msg_ctime; \ 1215 } while (/*CONSTCOND*/ 0) 1216 #define FILL_SEM(src, dst) do { \ 1217 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1218 (dst).sem_nsems = (src).sem_nsems; \ 1219 (dst).sem_otime = (src).sem_otime; \ 1220 (dst).sem_ctime = (src).sem_ctime; \ 1221 } while (/*CONSTCOND*/ 0) 1222 #define FILL_SHM(src, dst) do { \ 1223 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1224 (dst).shm_segsz = (src).shm_segsz; \ 1225 (dst).shm_lpid = (src).shm_lpid; \ 1226 (dst).shm_cpid = (src).shm_cpid; \ 1227 (dst).shm_atime = (src).shm_atime; \ 1228 (dst).shm_dtime = (src).shm_dtime; \ 1229 (dst).shm_ctime = (src).shm_ctime; \ 1230 (dst).shm_nattch = (src).shm_nattch; \ 1231 } while (/*CONSTCOND*/ 0) 1232 1233 static int 1234 sysctl_kern_sysvipc(SYSCTLFN_ARGS) 1235 { 1236 void *where = oldp; 1237 size_t *sizep = oldlenp; 1238 #ifdef SYSVMSG 1239 struct msg_sysctl_info *msgsi = NULL; 1240 #endif 1241 #ifdef SYSVSEM 1242 struct sem_sysctl_info *semsi = NULL; 1243 #endif 1244 #ifdef SYSVSHM 1245 struct shm_sysctl_info *shmsi = NULL; 1246 #endif 1247 size_t infosize, dssize, tsize, buflen; 1248 void *buf = NULL; 1249 char *start; 1250 int32_t nds; 1251 int i, error, ret; 1252 1253 if (namelen != 1) 1254 return (EINVAL); 1255 1256 start = where; 1257 buflen = *sizep; 1258 1259 switch (*name) { 1260 case KERN_SYSVIPC_MSG_INFO: 1261 #ifdef SYSVMSG 1262 infosize = sizeof(msgsi->msginfo); 1263 nds = msginfo.msgmni; 1264 dssize = sizeof(msgsi->msgids[0]); 1265 break; 1266 #else 1267 return (EINVAL); 1268 #endif 1269 case KERN_SYSVIPC_SEM_INFO: 1270 #ifdef SYSVSEM 1271 infosize = sizeof(semsi->seminfo); 1272 nds = seminfo.semmni; 1273 dssize = sizeof(semsi->semids[0]); 1274 break; 1275 #else 1276 return (EINVAL); 1277 #endif 1278 case KERN_SYSVIPC_SHM_INFO: 1279 #ifdef SYSVSHM 1280 infosize = sizeof(shmsi->shminfo); 1281 nds = shminfo.shmmni; 1282 dssize = sizeof(shmsi->shmids[0]); 1283 break; 1284 #else 1285 return (EINVAL); 1286 #endif 1287 default: 1288 return (EINVAL); 1289 } 1290 /* 1291 * Round infosize to 64 bit boundary if requesting more than just 1292 * the info structure or getting the total data size. 1293 */ 1294 if (where == NULL || *sizep > infosize) 1295 infosize = ((infosize + 7) / 8) * 8; 1296 tsize = infosize + nds * dssize; 1297 1298 /* Return just the total size required. */ 1299 if (where == NULL) { 1300 *sizep = tsize; 1301 return (0); 1302 } 1303 1304 /* Not enough room for even the info struct. */ 1305 if (buflen < infosize) { 1306 *sizep = 0; 1307 return (ENOMEM); 1308 } 1309 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1310 memset(buf, 0, min(tsize, buflen)); 1311 1312 switch (*name) { 1313 #ifdef SYSVMSG 1314 case KERN_SYSVIPC_MSG_INFO: 1315 msgsi = (struct msg_sysctl_info *)buf; 1316 msgsi->msginfo = msginfo; 1317 break; 1318 #endif 1319 #ifdef SYSVSEM 1320 case KERN_SYSVIPC_SEM_INFO: 1321 semsi = (struct sem_sysctl_info *)buf; 1322 semsi->seminfo = seminfo; 1323 break; 1324 #endif 1325 #ifdef SYSVSHM 1326 case KERN_SYSVIPC_SHM_INFO: 1327 shmsi = (struct shm_sysctl_info *)buf; 1328 shmsi->shminfo = shminfo; 1329 break; 1330 #endif 1331 } 1332 buflen -= infosize; 1333 1334 ret = 0; 1335 if (buflen > 0) { 1336 /* Fill in the IPC data structures. */ 1337 for (i = 0; i < nds; i++) { 1338 if (buflen < dssize) { 1339 ret = ENOMEM; 1340 break; 1341 } 1342 switch (*name) { 1343 #ifdef SYSVMSG 1344 case KERN_SYSVIPC_MSG_INFO: 1345 FILL_MSG(msqids[i], msgsi->msgids[i]); 1346 break; 1347 #endif 1348 #ifdef SYSVSEM 1349 case KERN_SYSVIPC_SEM_INFO: 1350 FILL_SEM(sema[i], semsi->semids[i]); 1351 break; 1352 #endif 1353 #ifdef SYSVSHM 1354 case KERN_SYSVIPC_SHM_INFO: 1355 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1356 break; 1357 #endif 1358 } 1359 buflen -= dssize; 1360 } 1361 } 1362 *sizep -= buflen; 1363 error = copyout(buf, start, *sizep); 1364 /* If copyout succeeded, use return code set earlier. */ 1365 if (error == 0) 1366 error = ret; 1367 if (buf) 1368 free(buf, M_TEMP); 1369 return (error); 1370 } 1371 1372 #undef FILL_PERM 1373 #undef FILL_MSG 1374 #undef FILL_SEM 1375 #undef FILL_SHM 1376 1377 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 1378 1379 #if NPTY > 0 1380 /* 1381 * sysctl helper routine for kern.maxptys. ensures that any new value 1382 * is acceptable to the pty subsystem. 1383 */ 1384 static int 1385 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1386 { 1387 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1388 int error, max; 1389 struct sysctlnode node; 1390 1391 /* get current value of maxptys */ 1392 max = pty_maxptys(0, 0); 1393 1394 node = *rnode; 1395 node.sysctl_data = &max; 1396 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1397 if (error || newp == NULL) 1398 return (error); 1399 1400 if (max != pty_maxptys(max, 1)) 1401 return (EINVAL); 1402 1403 return (0); 1404 } 1405 #endif /* NPTY > 0 */ 1406 1407 /* 1408 * sysctl helper routine for kern.sbmax. basically just ensures that 1409 * any new value is not too small. 1410 */ 1411 static int 1412 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1413 { 1414 int error, new_sbmax; 1415 struct sysctlnode node; 1416 1417 new_sbmax = sb_max; 1418 node = *rnode; 1419 node.sysctl_data = &new_sbmax; 1420 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1421 if (error || newp == NULL) 1422 return (error); 1423 1424 error = sb_max_set(new_sbmax); 1425 1426 return (error); 1427 } 1428 1429 /* 1430 * sysctl helper routine for kern.urandom node. picks a random number 1431 * for you. 1432 */ 1433 static int 1434 sysctl_kern_urnd(SYSCTLFN_ARGS) 1435 { 1436 #if NRND > 0 1437 int v; 1438 1439 if (rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY) == sizeof(v)) { 1440 struct sysctlnode node = *rnode; 1441 node.sysctl_data = &v; 1442 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1443 } 1444 else 1445 return (EIO); /*XXX*/ 1446 #else 1447 return (EOPNOTSUPP); 1448 #endif 1449 } 1450 1451 /* 1452 * sysctl helper routine to do kern.lwp.* work. 1453 */ 1454 static int 1455 sysctl_kern_lwp(SYSCTLFN_ARGS) 1456 { 1457 struct kinfo_lwp klwp; 1458 struct proc *p; 1459 struct lwp *l2; 1460 char *where, *dp; 1461 int pid, elem_size, elem_count; 1462 int buflen, needed, error; 1463 1464 if (namelen == 1 && name[0] == CTL_QUERY) 1465 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1466 1467 dp = where = oldp; 1468 buflen = where != NULL ? *oldlenp : 0; 1469 error = needed = 0; 1470 1471 if (newp != NULL || namelen != 3) 1472 return (EINVAL); 1473 pid = name[0]; 1474 elem_size = name[1]; 1475 elem_count = name[2]; 1476 1477 p = pfind(pid); 1478 if (p == NULL) 1479 return (ESRCH); 1480 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1481 if (buflen >= elem_size && elem_count > 0) { 1482 fill_lwp(l2, &klwp); 1483 /* 1484 * Copy out elem_size, but not larger than 1485 * the size of a struct kinfo_proc2. 1486 */ 1487 error = copyout(&klwp, dp, 1488 min(sizeof(klwp), elem_size)); 1489 if (error) 1490 goto cleanup; 1491 dp += elem_size; 1492 buflen -= elem_size; 1493 elem_count--; 1494 } 1495 needed += elem_size; 1496 } 1497 1498 if (where != NULL) { 1499 *oldlenp = dp - where; 1500 if (needed > *oldlenp) 1501 return (ENOMEM); 1502 } else { 1503 needed += KERN_LWPSLOP; 1504 *oldlenp = needed; 1505 } 1506 return (0); 1507 cleanup: 1508 return (error); 1509 } 1510 1511 /* 1512 * sysctl helper routine for kern.forkfsleep node. ensures that the 1513 * given value is not too large or two small, and is at least one 1514 * timer tick if not zero. 1515 */ 1516 static int 1517 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1518 { 1519 /* userland sees value in ms, internally is in ticks */ 1520 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1521 int error, timo, lsleep; 1522 struct sysctlnode node; 1523 1524 lsleep = forkfsleep * 1000 / hz; 1525 node = *rnode; 1526 node.sysctl_data = &lsleep; 1527 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1528 if (error || newp == NULL) 1529 return (error); 1530 1531 /* refuse negative values, and overly 'long time' */ 1532 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1533 return (EINVAL); 1534 1535 timo = mstohz(lsleep); 1536 1537 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1538 if (lsleep != 0 && timo == 0) 1539 forkfsleep = 1; 1540 else 1541 forkfsleep = timo; 1542 1543 return (0); 1544 } 1545 1546 /* 1547 * sysctl helper routine for kern.root_partition 1548 */ 1549 static int 1550 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1551 { 1552 int rootpart = DISKPART(rootdev); 1553 struct sysctlnode node = *rnode; 1554 1555 node.sysctl_data = &rootpart; 1556 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1557 } 1558 1559 /* 1560 * sysctl helper function for kern.drivers 1561 */ 1562 static int 1563 sysctl_kern_drivers(SYSCTLFN_ARGS) 1564 { 1565 int error; 1566 size_t buflen; 1567 struct kinfo_drivers kd; 1568 char *start, *where; 1569 const char *dname; 1570 int i; 1571 extern struct devsw_conv *devsw_conv; 1572 extern int max_devsw_convs; 1573 1574 if (newp != NULL || namelen != 0) 1575 return (EINVAL); 1576 1577 start = where = oldp; 1578 buflen = *oldlenp; 1579 if (where == NULL) { 1580 *oldlenp = max_devsw_convs * sizeof kd; 1581 return 0; 1582 } 1583 1584 /* 1585 * An array of kinfo_drivers structures 1586 */ 1587 error = 0; 1588 for (i = 0; i < max_devsw_convs; i++) { 1589 dname = devsw_conv[i].d_name; 1590 if (dname == NULL) 1591 continue; 1592 if (buflen < sizeof kd) { 1593 error = ENOMEM; 1594 break; 1595 } 1596 kd.d_bmajor = devsw_conv[i].d_bmajor; 1597 kd.d_cmajor = devsw_conv[i].d_cmajor; 1598 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1599 error = copyout(&kd, where, sizeof kd); 1600 if (error != 0) 1601 break; 1602 buflen -= sizeof kd; 1603 where += sizeof kd; 1604 } 1605 *oldlenp = where - start; 1606 return error; 1607 } 1608 1609 static int 1610 sysctl_doeproc(SYSCTLFN_ARGS) 1611 { 1612 struct eproc eproc; 1613 struct kinfo_proc2 kproc2; 1614 struct kinfo_proc *dp; 1615 struct proc *p; 1616 const struct proclist_desc *pd; 1617 char *where, *dp2; 1618 int type, op, arg; 1619 u_int elem_size, elem_count; 1620 size_t buflen, needed; 1621 int error; 1622 1623 if (namelen == 1 && name[0] == CTL_QUERY) 1624 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1625 1626 dp = oldp; 1627 dp2 = where = oldp; 1628 buflen = where != NULL ? *oldlenp : 0; 1629 error = 0; 1630 needed = 0; 1631 type = rnode->sysctl_num; 1632 1633 if (type == KERN_PROC) { 1634 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 1635 return (EINVAL); 1636 op = name[0]; 1637 if (op != KERN_PROC_ALL) 1638 arg = name[1]; 1639 else 1640 arg = 0; /* Quell compiler warning */ 1641 elem_size = elem_count = 0; /* Ditto */ 1642 } else { 1643 if (namelen != 4) 1644 return (EINVAL); 1645 op = name[0]; 1646 arg = name[1]; 1647 elem_size = name[2]; 1648 elem_count = name[3]; 1649 } 1650 1651 proclist_lock_read(); 1652 1653 pd = proclists; 1654 again: 1655 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1656 /* 1657 * Skip embryonic processes. 1658 */ 1659 if (p->p_stat == SIDL) 1660 continue; 1661 /* 1662 * TODO - make more efficient (see notes below). 1663 * do by session. 1664 */ 1665 switch (op) { 1666 1667 case KERN_PROC_PID: 1668 /* could do this with just a lookup */ 1669 if (p->p_pid != (pid_t)arg) 1670 continue; 1671 break; 1672 1673 case KERN_PROC_PGRP: 1674 /* could do this by traversing pgrp */ 1675 if (p->p_pgrp->pg_id != (pid_t)arg) 1676 continue; 1677 break; 1678 1679 case KERN_PROC_SESSION: 1680 if (p->p_session->s_sid != (pid_t)arg) 1681 continue; 1682 break; 1683 1684 case KERN_PROC_TTY: 1685 if (arg == (int) KERN_PROC_TTY_REVOKE) { 1686 if ((p->p_flag & P_CONTROLT) == 0 || 1687 p->p_session->s_ttyp == NULL || 1688 p->p_session->s_ttyvp != NULL) 1689 continue; 1690 } else if ((p->p_flag & P_CONTROLT) == 0 || 1691 p->p_session->s_ttyp == NULL) { 1692 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1693 continue; 1694 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1695 continue; 1696 break; 1697 1698 case KERN_PROC_UID: 1699 if (p->p_ucred->cr_uid != (uid_t)arg) 1700 continue; 1701 break; 1702 1703 case KERN_PROC_RUID: 1704 if (p->p_cred->p_ruid != (uid_t)arg) 1705 continue; 1706 break; 1707 1708 case KERN_PROC_GID: 1709 if (p->p_ucred->cr_gid != (uid_t)arg) 1710 continue; 1711 break; 1712 1713 case KERN_PROC_RGID: 1714 if (p->p_cred->p_rgid != (uid_t)arg) 1715 continue; 1716 break; 1717 1718 case KERN_PROC_ALL: 1719 /* allow everything */ 1720 break; 1721 1722 default: 1723 error = EINVAL; 1724 goto cleanup; 1725 } 1726 if (type == KERN_PROC) { 1727 if (buflen >= sizeof(struct kinfo_proc)) { 1728 fill_eproc(p, &eproc); 1729 error = copyout(p, &dp->kp_proc, 1730 sizeof(struct proc)); 1731 if (error) 1732 goto cleanup; 1733 error = copyout(&eproc, &dp->kp_eproc, 1734 sizeof(eproc)); 1735 if (error) 1736 goto cleanup; 1737 dp++; 1738 buflen -= sizeof(struct kinfo_proc); 1739 } 1740 needed += sizeof(struct kinfo_proc); 1741 } else { /* KERN_PROC2 */ 1742 if (buflen >= elem_size && elem_count > 0) { 1743 fill_kproc2(p, &kproc2); 1744 /* 1745 * Copy out elem_size, but not larger than 1746 * the size of a struct kinfo_proc2. 1747 */ 1748 error = copyout(&kproc2, dp2, 1749 min(sizeof(kproc2), elem_size)); 1750 if (error) 1751 goto cleanup; 1752 dp2 += elem_size; 1753 buflen -= elem_size; 1754 elem_count--; 1755 } 1756 needed += elem_size; 1757 } 1758 } 1759 pd++; 1760 if (pd->pd_list != NULL) 1761 goto again; 1762 proclist_unlock_read(); 1763 1764 if (where != NULL) { 1765 if (type == KERN_PROC) 1766 *oldlenp = (char *)dp - where; 1767 else 1768 *oldlenp = dp2 - where; 1769 if (needed > *oldlenp) 1770 return (ENOMEM); 1771 } else { 1772 needed += KERN_PROCSLOP; 1773 *oldlenp = needed; 1774 } 1775 return (0); 1776 cleanup: 1777 proclist_unlock_read(); 1778 return (error); 1779 } 1780 1781 /* 1782 * sysctl helper routine for kern.proc_args pseudo-subtree. 1783 */ 1784 static int 1785 sysctl_kern_proc_args(SYSCTLFN_ARGS) 1786 { 1787 struct ps_strings pss; 1788 struct proc *p, *up = l->l_proc; 1789 size_t len, upper_bound, xlen, i; 1790 struct uio auio; 1791 struct iovec aiov; 1792 vaddr_t argv; 1793 pid_t pid; 1794 int nargv, type, error; 1795 char *arg; 1796 char *tmp; 1797 1798 if (namelen == 1 && name[0] == CTL_QUERY) 1799 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1800 1801 if (newp != NULL || namelen != 2) 1802 return (EINVAL); 1803 pid = name[0]; 1804 type = name[1]; 1805 1806 switch (type) { 1807 case KERN_PROC_ARGV: 1808 case KERN_PROC_NARGV: 1809 case KERN_PROC_ENV: 1810 case KERN_PROC_NENV: 1811 /* ok */ 1812 break; 1813 default: 1814 return (EINVAL); 1815 } 1816 1817 /* check pid */ 1818 if ((p = pfind(pid)) == NULL) 1819 return (EINVAL); 1820 1821 /* only root or same user change look at the environment */ 1822 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1823 if (up->p_ucred->cr_uid != 0) { 1824 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1825 up->p_cred->p_ruid != p->p_cred->p_svuid) 1826 return (EPERM); 1827 } 1828 } 1829 1830 if (oldp == NULL) { 1831 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1832 *oldlenp = sizeof (int); 1833 else 1834 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 1835 return (0); 1836 } 1837 1838 /* 1839 * Zombies don't have a stack, so we can't read their psstrings. 1840 * System processes also don't have a user stack. 1841 */ 1842 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1843 return (EINVAL); 1844 1845 /* 1846 * Lock the process down in memory. 1847 */ 1848 /* XXXCDC: how should locking work here? */ 1849 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1850 return (EFAULT); 1851 1852 p->p_vmspace->vm_refcnt++; /* XXX */ 1853 1854 /* 1855 * Allocate a temporary buffer to hold the arguments. 1856 */ 1857 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1858 1859 /* 1860 * Read in the ps_strings structure. 1861 */ 1862 aiov.iov_base = &pss; 1863 aiov.iov_len = sizeof(pss); 1864 auio.uio_iov = &aiov; 1865 auio.uio_iovcnt = 1; 1866 auio.uio_offset = (vaddr_t)p->p_psstr; 1867 auio.uio_resid = sizeof(pss); 1868 auio.uio_segflg = UIO_SYSSPACE; 1869 auio.uio_rw = UIO_READ; 1870 auio.uio_procp = NULL; 1871 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1872 if (error) 1873 goto done; 1874 1875 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1876 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1877 else 1878 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1879 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1880 error = copyout(&nargv, oldp, sizeof(nargv)); 1881 *oldlenp = sizeof(nargv); 1882 goto done; 1883 } 1884 /* 1885 * Now read the address of the argument vector. 1886 */ 1887 switch (type) { 1888 case KERN_PROC_ARGV: 1889 /* XXX compat32 stuff here */ 1890 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1891 break; 1892 case KERN_PROC_ENV: 1893 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1894 break; 1895 default: 1896 return (EINVAL); 1897 } 1898 auio.uio_offset = (off_t)(long)tmp; 1899 aiov.iov_base = &argv; 1900 aiov.iov_len = sizeof(argv); 1901 auio.uio_iov = &aiov; 1902 auio.uio_iovcnt = 1; 1903 auio.uio_resid = sizeof(argv); 1904 auio.uio_segflg = UIO_SYSSPACE; 1905 auio.uio_rw = UIO_READ; 1906 auio.uio_procp = NULL; 1907 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1908 if (error) 1909 goto done; 1910 1911 /* 1912 * Now copy in the actual argument vector, one page at a time, 1913 * since we don't know how long the vector is (though, we do 1914 * know how many NUL-terminated strings are in the vector). 1915 */ 1916 len = 0; 1917 upper_bound = *oldlenp; 1918 for (; nargv != 0 && len < upper_bound; len += xlen) { 1919 aiov.iov_base = arg; 1920 aiov.iov_len = PAGE_SIZE; 1921 auio.uio_iov = &aiov; 1922 auio.uio_iovcnt = 1; 1923 auio.uio_offset = argv + len; 1924 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1925 auio.uio_resid = xlen; 1926 auio.uio_segflg = UIO_SYSSPACE; 1927 auio.uio_rw = UIO_READ; 1928 auio.uio_procp = NULL; 1929 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1930 if (error) 1931 goto done; 1932 1933 for (i = 0; i < xlen && nargv != 0; i++) { 1934 if (arg[i] == '\0') 1935 nargv--; /* one full string */ 1936 } 1937 1938 /* 1939 * Make sure we don't copyout past the end of the user's 1940 * buffer. 1941 */ 1942 if (len + i > upper_bound) 1943 i = upper_bound - len; 1944 1945 error = copyout(arg, (char *)oldp + len, i); 1946 if (error) 1947 break; 1948 1949 if (nargv == 0) { 1950 len += i; 1951 break; 1952 } 1953 } 1954 *oldlenp = len; 1955 1956 done: 1957 uvmspace_free(p->p_vmspace); 1958 1959 free(arg, M_TEMP); 1960 return (error); 1961 } 1962 1963 /* 1964 * sysctl helper routine for hw.usermem and hw.usermem64. values are 1965 * calculate on the fly taking into account integer overflow and the 1966 * current wired count. 1967 */ 1968 static int 1969 sysctl_hw_usermem(SYSCTLFN_ARGS) 1970 { 1971 u_int ui; 1972 u_quad_t uq; 1973 struct sysctlnode node; 1974 1975 node = *rnode; 1976 switch (rnode->sysctl_num) { 1977 case HW_USERMEM: 1978 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1979 ui = UINT_MAX; 1980 else 1981 ui *= PAGE_SIZE; 1982 node.sysctl_data = &ui; 1983 break; 1984 case HW_USERMEM64: 1985 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1986 node.sysctl_data = &uq; 1987 break; 1988 default: 1989 return (EINVAL); 1990 } 1991 1992 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1993 } 1994 1995 /* 1996 * sysctl helper routine for kern.cnmagic node. pulls the old value 1997 * out, encoded, and stuffs the new value in for decoding. 1998 */ 1999 static int 2000 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2001 { 2002 char magic[CNS_LEN]; 2003 int error; 2004 struct sysctlnode node; 2005 2006 if (oldp) 2007 cn_get_magic(magic, CNS_LEN); 2008 node = *rnode; 2009 node.sysctl_data = &magic[0]; 2010 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2011 if (error || newp == NULL) 2012 return (error); 2013 2014 return (cn_set_magic(magic)); 2015 } 2016 2017 static int 2018 sysctl_hw_ncpu(SYSCTLFN_ARGS) 2019 { 2020 int ncpu; 2021 struct sysctlnode node; 2022 2023 ncpu = sysctl_ncpus(); 2024 node = *rnode; 2025 node.sysctl_data = &ncpu; 2026 2027 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2028 } 2029 2030 2031 /* 2032 * ******************************************************************** 2033 * section 3: public helper routines that are used for more than one 2034 * node 2035 * ******************************************************************** 2036 */ 2037 2038 /* 2039 * sysctl helper routine for the kern.root_device node and some ports' 2040 * machdep.root_device nodes. 2041 */ 2042 int 2043 sysctl_root_device(SYSCTLFN_ARGS) 2044 { 2045 struct sysctlnode node; 2046 2047 node = *rnode; 2048 node.sysctl_data = root_device->dv_xname; 2049 node.sysctl_size = strlen(root_device->dv_xname) + 1; 2050 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2051 } 2052 2053 /* 2054 * sysctl helper routine for kern.consdev, dependent on the current 2055 * state of the console. also used for machdep.console_device on some 2056 * ports. 2057 */ 2058 int 2059 sysctl_consdev(SYSCTLFN_ARGS) 2060 { 2061 dev_t consdev; 2062 struct sysctlnode node; 2063 2064 if (cn_tab != NULL) 2065 consdev = cn_tab->cn_dev; 2066 else 2067 consdev = NODEV; 2068 node = *rnode; 2069 node.sysctl_data = &consdev; 2070 node.sysctl_size = sizeof(consdev); 2071 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2072 } 2073 2074 /* 2075 * ******************************************************************** 2076 * section 4: support for some helpers 2077 * ******************************************************************** 2078 */ 2079 2080 /* 2081 * Fill in a kinfo_proc2 structure for the specified process. 2082 */ 2083 static void 2084 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 2085 { 2086 struct tty *tp; 2087 struct lwp *l; 2088 struct timeval ut, st; 2089 2090 memset(ki, 0, sizeof(*ki)); 2091 2092 ki->p_paddr = PTRTOUINT64(p); 2093 ki->p_fd = PTRTOUINT64(p->p_fd); 2094 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2095 ki->p_stats = PTRTOUINT64(p->p_stats); 2096 ki->p_limit = PTRTOUINT64(p->p_limit); 2097 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2098 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2099 ki->p_sess = PTRTOUINT64(p->p_session); 2100 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2101 ki->p_ru = PTRTOUINT64(p->p_ru); 2102 2103 ki->p_eflag = 0; 2104 ki->p_exitsig = p->p_exitsig; 2105 ki->p_flag = p->p_flag; 2106 2107 ki->p_pid = p->p_pid; 2108 if (p->p_pptr) 2109 ki->p_ppid = p->p_pptr->p_pid; 2110 else 2111 ki->p_ppid = 0; 2112 ki->p_sid = p->p_session->s_sid; 2113 ki->p__pgid = p->p_pgrp->pg_id; 2114 2115 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2116 2117 ki->p_uid = p->p_ucred->cr_uid; 2118 ki->p_ruid = p->p_cred->p_ruid; 2119 ki->p_gid = p->p_ucred->cr_gid; 2120 ki->p_rgid = p->p_cred->p_rgid; 2121 ki->p_svuid = p->p_cred->p_svuid; 2122 ki->p_svgid = p->p_cred->p_svgid; 2123 2124 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 2125 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 2126 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 2127 2128 ki->p_jobc = p->p_pgrp->pg_jobc; 2129 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 2130 ki->p_tdev = tp->t_dev; 2131 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2132 ki->p_tsess = PTRTOUINT64(tp->t_session); 2133 } else { 2134 ki->p_tdev = NODEV; 2135 } 2136 2137 ki->p_estcpu = p->p_estcpu; 2138 ki->p_rtime_sec = p->p_rtime.tv_sec; 2139 ki->p_rtime_usec = p->p_rtime.tv_usec; 2140 ki->p_cpticks = p->p_cpticks; 2141 ki->p_pctcpu = p->p_pctcpu; 2142 2143 ki->p_uticks = p->p_uticks; 2144 ki->p_sticks = p->p_sticks; 2145 ki->p_iticks = p->p_iticks; 2146 2147 ki->p_tracep = PTRTOUINT64(p->p_tracep); 2148 ki->p_traceflag = p->p_traceflag; 2149 2150 2151 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 2152 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 2153 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2154 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2155 2156 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2157 ki->p_realstat = p->p_stat; 2158 ki->p_nice = p->p_nice; 2159 2160 ki->p_xstat = p->p_xstat; 2161 ki->p_acflag = p->p_acflag; 2162 2163 strncpy(ki->p_comm, p->p_comm, 2164 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2165 2166 strncpy(ki->p_login, p->p_session->s_login, 2167 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 2168 2169 ki->p_nlwps = p->p_nlwps; 2170 ki->p_nrlwps = p->p_nrlwps; 2171 ki->p_realflag = p->p_flag; 2172 2173 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2174 ki->p_vm_rssize = 0; 2175 ki->p_vm_tsize = 0; 2176 ki->p_vm_dsize = 0; 2177 ki->p_vm_ssize = 0; 2178 l = NULL; 2179 } else { 2180 struct vmspace *vm = p->p_vmspace; 2181 2182 ki->p_vm_rssize = vm_resident_count(vm); 2183 ki->p_vm_tsize = vm->vm_tsize; 2184 ki->p_vm_dsize = vm->vm_dsize; 2185 ki->p_vm_ssize = vm->vm_ssize; 2186 2187 /* Pick a "representative" LWP */ 2188 l = proc_representative_lwp(p); 2189 ki->p_forw = PTRTOUINT64(l->l_forw); 2190 ki->p_back = PTRTOUINT64(l->l_back); 2191 ki->p_addr = PTRTOUINT64(l->l_addr); 2192 ki->p_stat = l->l_stat; 2193 ki->p_flag |= l->l_flag; 2194 ki->p_swtime = l->l_swtime; 2195 ki->p_slptime = l->l_slptime; 2196 if (l->l_stat == LSONPROC) { 2197 KDASSERT(l->l_cpu != NULL); 2198 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2199 } else 2200 ki->p_schedflags = 0; 2201 ki->p_holdcnt = l->l_holdcnt; 2202 ki->p_priority = l->l_priority; 2203 ki->p_usrpri = l->l_usrpri; 2204 if (l->l_wmesg) 2205 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 2206 ki->p_wchan = PTRTOUINT64(l->l_wchan); 2207 2208 } 2209 2210 if (p->p_session->s_ttyvp) 2211 ki->p_eflag |= EPROC_CTTY; 2212 if (SESS_LEADER(p)) 2213 ki->p_eflag |= EPROC_SLEADER; 2214 2215 /* XXX Is this double check necessary? */ 2216 if (P_ZOMBIE(p)) { 2217 ki->p_uvalid = 0; 2218 } else { 2219 ki->p_uvalid = 1; 2220 2221 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 2222 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 2223 2224 calcru(p, &ut, &st, 0); 2225 ki->p_uutime_sec = ut.tv_sec; 2226 ki->p_uutime_usec = ut.tv_usec; 2227 ki->p_ustime_sec = st.tv_sec; 2228 ki->p_ustime_usec = st.tv_usec; 2229 2230 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 2231 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 2232 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 2233 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 2234 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 2235 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 2236 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 2237 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 2238 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 2239 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 2240 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 2241 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 2242 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 2243 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 2244 2245 timeradd(&p->p_stats->p_cru.ru_utime, 2246 &p->p_stats->p_cru.ru_stime, &ut); 2247 ki->p_uctime_sec = ut.tv_sec; 2248 ki->p_uctime_usec = ut.tv_usec; 2249 } 2250 #ifdef MULTIPROCESSOR 2251 if (l && l->l_cpu != NULL) 2252 ki->p_cpuid = l->l_cpu->ci_cpuid; 2253 else 2254 #endif 2255 ki->p_cpuid = KI_NOCPU; 2256 } 2257 2258 /* 2259 * Fill in a kinfo_lwp structure for the specified lwp. 2260 */ 2261 static void 2262 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 2263 { 2264 2265 kl->l_forw = PTRTOUINT64(l->l_forw); 2266 kl->l_back = PTRTOUINT64(l->l_back); 2267 kl->l_laddr = PTRTOUINT64(l); 2268 kl->l_addr = PTRTOUINT64(l->l_addr); 2269 kl->l_stat = l->l_stat; 2270 kl->l_lid = l->l_lid; 2271 kl->l_flag = l->l_flag; 2272 2273 kl->l_swtime = l->l_swtime; 2274 kl->l_slptime = l->l_slptime; 2275 if (l->l_stat == LSONPROC) { 2276 KDASSERT(l->l_cpu != NULL); 2277 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2278 } else 2279 kl->l_schedflags = 0; 2280 kl->l_holdcnt = l->l_holdcnt; 2281 kl->l_priority = l->l_priority; 2282 kl->l_usrpri = l->l_usrpri; 2283 if (l->l_wmesg) 2284 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 2285 kl->l_wchan = PTRTOUINT64(l->l_wchan); 2286 #ifdef MULTIPROCESSOR 2287 if (l->l_cpu != NULL) 2288 kl->l_cpuid = l->l_cpu->ci_cpuid; 2289 else 2290 #endif 2291 kl->l_cpuid = KI_NOCPU; 2292 } 2293 2294 /* 2295 * Fill in an eproc structure for the specified process. 2296 */ 2297 void 2298 fill_eproc(struct proc *p, struct eproc *ep) 2299 { 2300 struct tty *tp; 2301 struct lwp *l; 2302 2303 ep->e_paddr = p; 2304 ep->e_sess = p->p_session; 2305 ep->e_pcred = *p->p_cred; 2306 ep->e_ucred = *p->p_ucred; 2307 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2308 ep->e_vm.vm_rssize = 0; 2309 ep->e_vm.vm_tsize = 0; 2310 ep->e_vm.vm_dsize = 0; 2311 ep->e_vm.vm_ssize = 0; 2312 /* ep->e_vm.vm_pmap = XXX; */ 2313 } else { 2314 struct vmspace *vm = p->p_vmspace; 2315 2316 ep->e_vm.vm_rssize = vm_resident_count(vm); 2317 ep->e_vm.vm_tsize = vm->vm_tsize; 2318 ep->e_vm.vm_dsize = vm->vm_dsize; 2319 ep->e_vm.vm_ssize = vm->vm_ssize; 2320 2321 /* Pick a "representative" LWP */ 2322 l = proc_representative_lwp(p); 2323 2324 if (l->l_wmesg) 2325 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 2326 } 2327 if (p->p_pptr) 2328 ep->e_ppid = p->p_pptr->p_pid; 2329 else 2330 ep->e_ppid = 0; 2331 ep->e_pgid = p->p_pgrp->pg_id; 2332 ep->e_sid = ep->e_sess->s_sid; 2333 ep->e_jobc = p->p_pgrp->pg_jobc; 2334 if ((p->p_flag & P_CONTROLT) && 2335 (tp = ep->e_sess->s_ttyp)) { 2336 ep->e_tdev = tp->t_dev; 2337 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2338 ep->e_tsess = tp->t_session; 2339 } else 2340 ep->e_tdev = NODEV; 2341 2342 ep->e_xsize = ep->e_xrssize = 0; 2343 ep->e_xccount = ep->e_xswrss = 0; 2344 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 2345 if (SESS_LEADER(p)) 2346 ep->e_flag |= EPROC_SLEADER; 2347 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 2348 } 2349
Indexes created Wed Oct 01 15:09:59 GMT 2025