init_sysctl.c revision 1.15
1 /* $NetBSD: init_sysctl.c,v 1.15 2003/12/28 14:39:36 martin 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 "opt_sysv.h" 40 #include "opt_multiprocessor.h" 41 #include "opt_posix.h" 42 #include "pty.h" 43 #include "rnd.h" 44 45 #include <sys/types.h> 46 #include <sys/param.h> 47 #include <sys/sysctl.h> 48 #include <sys/errno.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/unistd.h> 52 #include <sys/disklabel.h> 53 #include <sys/rnd.h> 54 #include <sys/vnode.h> 55 #include <sys/mount.h> 56 #include <sys/namei.h> 57 #include <sys/msgbuf.h> 58 #include <dev/cons.h> 59 #include <sys/socketvar.h> 60 #include <sys/file.h> 61 #include <sys/tty.h> 62 #include <sys/malloc.h> 63 #include <sys/resource.h> 64 #include <sys/resourcevar.h> 65 #include <sys/exec.h> 66 #include <sys/conf.h> 67 #include <sys/device.h> 68 69 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 70 #include <sys/ipc.h> 71 #endif 72 #ifdef SYSVMSG 73 #include <sys/msg.h> 74 #endif 75 #ifdef SYSVSEM 76 #include <sys/sem.h> 77 #endif 78 #ifdef SYSVSHM 79 #include <sys/shm.h> 80 #endif 81 82 #include <machine/cpu.h> 83 84 /* 85 * try over estimating by 5 procs/lwps 86 */ 87 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 88 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 89 90 /* 91 * convert pointer to 64 int for struct kinfo_proc2 92 */ 93 #define PTRTOINT64(foo) ((u_int64_t)(uintptr_t)(foo)) 94 95 #ifndef MULTIPROCESSOR 96 #define sysctl_ncpus() (1) 97 #else /* MULTIPROCESSOR */ 98 #ifndef CPU_INFO_FOREACH 99 #define CPU_INFO_ITERATOR int 100 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 101 #endif 102 static int 103 sysctl_ncpus(void) 104 { 105 struct cpu_info *ci; 106 CPU_INFO_ITERATOR cii; 107 108 int ncpus = 0; 109 for (CPU_INFO_FOREACH(cii, ci)) 110 ncpus++; 111 return (ncpus); 112 } 113 #endif /* MULTIPROCESSOR */ 114 115 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 116 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 117 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 118 static int sysctl_kern_securelevel(SYSCTLFN_PROTO); 119 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 120 static int sysctl_kern_hostname(SYSCTLFN_PROTO); 121 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 122 static int sysctl_kern_file(SYSCTLFN_PROTO); 123 static int sysctl_kern_autonice(SYSCTLFN_PROTO); 124 static int sysctl_msgbuf(SYSCTLFN_PROTO); 125 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 126 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 127 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 128 static int sysctl_kern_sysvipc(SYSCTLFN_PROTO); 129 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 130 #if NPTY > 0 131 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 132 #endif /* NPTY > 0 */ 133 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 134 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 135 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 136 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 137 static int sysctl_kern_somaxkva(SYSCTLFN_PROTO); 138 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 139 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 140 static int sysctl_doeproc(SYSCTLFN_PROTO); 141 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 142 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 143 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 144 static int sysctl_hw_ncpu(SYSCTLFN_PROTO); 145 146 static void fill_kproc2(struct proc *, struct kinfo_proc2 *); 147 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 148 149 /* 150 * ******************************************************************** 151 * section 1: setup routines 152 * ******************************************************************** 153 * these functions are stuffed into a link set for sysctl setup 154 * functions. they're never called or referenced from anywhere else. 155 * ******************************************************************** 156 */ 157 158 /* 159 * sets up the base nodes... 160 */ 161 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 162 { 163 164 sysctl_createv(SYSCTL_PERMANENT, 165 CTLTYPE_NODE, "kern", NULL, 166 NULL, 0, NULL, 0, 167 CTL_KERN, CTL_EOL); 168 sysctl_createv(SYSCTL_PERMANENT, 169 CTLTYPE_NODE, "vm", NULL, 170 NULL, 0, NULL, 0, 171 CTL_VM, CTL_EOL); 172 sysctl_createv(SYSCTL_PERMANENT, 173 CTLTYPE_NODE, "vfs", NULL, 174 NULL, 0, NULL, 0, 175 CTL_VFS, CTL_EOL); 176 sysctl_createv(SYSCTL_PERMANENT, 177 CTLTYPE_NODE, "net", NULL, 178 NULL, 0, NULL, 0, 179 CTL_NET, CTL_EOL); 180 sysctl_createv(SYSCTL_PERMANENT, 181 CTLTYPE_NODE, "debug", NULL, 182 NULL, 0, NULL, 0, 183 CTL_DEBUG, CTL_EOL); 184 sysctl_createv(SYSCTL_PERMANENT, 185 CTLTYPE_NODE, "hw", NULL, 186 NULL, 0, NULL, 0, 187 CTL_HW, CTL_EOL); 188 sysctl_createv(SYSCTL_PERMANENT, 189 CTLTYPE_NODE, "machdep", NULL, 190 NULL, 0, NULL, 0, 191 CTL_MACHDEP, CTL_EOL); 192 /* 193 * this node is inserted so that the sysctl nodes in libc can 194 * operate. 195 */ 196 sysctl_createv(SYSCTL_PERMANENT, 197 CTLTYPE_NODE, "user", NULL, 198 NULL, 0, NULL, 0, 199 CTL_USER, CTL_EOL); 200 sysctl_createv(SYSCTL_PERMANENT, 201 CTLTYPE_NODE, "ddb", NULL, 202 NULL, 0, NULL, 0, 203 CTL_DDB, CTL_EOL); 204 sysctl_createv(SYSCTL_PERMANENT, 205 CTLTYPE_NODE, "proc", NULL, 206 NULL, 0, NULL, 0, 207 CTL_PROC, CTL_EOL); 208 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 209 CTLTYPE_NODE, "vendor", NULL, 210 NULL, 0, NULL, 0, 211 CTL_VENDOR, CTL_EOL); 212 sysctl_createv(SYSCTL_PERMANENT, 213 CTLTYPE_NODE, "emul", NULL, 214 NULL, 0, NULL, 0, 215 CTL_EMUL, CTL_EOL); 216 } 217 218 /* 219 * this setup routine is a replacement for kern_sysctl() 220 */ 221 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 222 { 223 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 224 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 225 extern int dumponpanic; /* defined in kern/subr_prf.c */ 226 227 sysctl_createv(SYSCTL_PERMANENT, 228 CTLTYPE_NODE, "kern", NULL, 229 NULL, 0, NULL, 0, 230 CTL_KERN, CTL_EOL); 231 232 sysctl_createv(SYSCTL_PERMANENT, 233 CTLTYPE_STRING, "ostype", NULL, 234 NULL, 0, &ostype, 0, 235 CTL_KERN, KERN_OSTYPE, CTL_EOL); 236 sysctl_createv(SYSCTL_PERMANENT, 237 CTLTYPE_STRING, "osrelease", NULL, 238 NULL, 0, &osrelease, 0, 239 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 240 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 241 CTLTYPE_INT, "osrevision", NULL, 242 NULL, __NetBSD_Version__, NULL, 0, 243 CTL_KERN, KERN_OSREV, CTL_EOL); 244 sysctl_createv(SYSCTL_PERMANENT, 245 CTLTYPE_STRING, "version", NULL, 246 NULL, 0, &version, 0, 247 CTL_KERN, KERN_VERSION, CTL_EOL); 248 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 249 CTLTYPE_INT, "maxvnodes", NULL, 250 sysctl_kern_maxvnodes, 0, NULL, 0, 251 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 252 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 253 CTLTYPE_INT, "maxproc", NULL, 254 sysctl_kern_maxproc, 0, NULL, 0, 255 CTL_KERN, KERN_MAXPROC, CTL_EOL); 256 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 257 CTLTYPE_INT, "maxfiles", NULL, 258 NULL, 0, &maxfiles, 0, 259 CTL_KERN, KERN_MAXFILES, CTL_EOL); 260 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 261 CTLTYPE_INT, "argmax", NULL, 262 NULL, ARG_MAX, NULL, 0, 263 CTL_KERN, KERN_ARGMAX, CTL_EOL); 264 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 265 CTLTYPE_INT, "securelevel", NULL, 266 sysctl_kern_securelevel, 0, &securelevel, 0, 267 CTL_KERN, KERN_SECURELVL, CTL_EOL); 268 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 269 CTLTYPE_STRING, "hostname", NULL, 270 sysctl_kern_hostname, 0, &hostname, MAXHOSTNAMELEN, 271 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 272 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 273 CTLTYPE_INT, "hostid", NULL, 274 sysctl_kern_hostid, 0, NULL, 0, 275 CTL_KERN, KERN_HOSTID, CTL_EOL); 276 sysctl_createv(SYSCTL_PERMANENT, 277 CTLTYPE_STRUCT, "clockrate", NULL, 278 sysctl_kern_clockrate, 0, NULL, 279 sizeof(struct clockinfo), 280 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 281 sysctl_createv(SYSCTL_PERMANENT, 282 CTLTYPE_STRUCT, "vnode", NULL, 283 sysctl_kern_vnode, 0, NULL, 0, 284 CTL_KERN, KERN_VNODE, CTL_EOL); 285 sysctl_createv(SYSCTL_PERMANENT, 286 CTLTYPE_STRUCT, "file", NULL, 287 sysctl_kern_file, 0, NULL, 0, 288 CTL_KERN, KERN_FILE, CTL_EOL); 289 #ifndef GPROF 290 sysctl_createv(SYSCTL_PERMANENT, 291 CTLTYPE_NODE, "profiling", NULL, 292 sysctl_notavail, 0, NULL, 0, 293 CTL_KERN, KERN_PROF, CTL_EOL); 294 #endif 295 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 296 CTLTYPE_INT, "posix1version", NULL, 297 NULL, _POSIX_VERSION, NULL, 0, 298 CTL_KERN, KERN_POSIX1, CTL_EOL); 299 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 300 CTLTYPE_INT, "ngroups", NULL, 301 NULL, NGROUPS_MAX, NULL, 0, 302 CTL_KERN, KERN_NGROUPS, CTL_EOL); 303 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 304 CTLTYPE_INT, "job_control", NULL, 305 NULL, 1, NULL, 0, 306 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 307 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 308 CTLTYPE_INT, "saved_ids", NULL, NULL, 309 #ifdef _POSIX_SAVED_IDS 310 1, 311 #else /* _POSIX_SAVED_IDS */ 312 0, 313 #endif /* _POSIX_SAVED_IDS */ 314 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 315 sysctl_createv(SYSCTL_PERMANENT, 316 CTLTYPE_STRUCT, "boottime", NULL, 317 NULL, 0, &boottime, sizeof(boottime), 318 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 319 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 320 CTLTYPE_STRING, "domainname", NULL, 321 NULL, 0, &domainname, MAXHOSTNAMELEN, 322 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 323 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 324 CTLTYPE_INT, "maxpartitions", NULL, 325 NULL, MAXPARTITIONS, NULL, 0, 326 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 327 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 328 CTLTYPE_INT, "rawpartition", NULL, 329 NULL, RAW_PART, NULL, 0, 330 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 331 sysctl_createv(SYSCTL_PERMANENT, 332 CTLTYPE_STRUCT, "timex", NULL, 333 sysctl_notavail, 0, NULL, 0, 334 CTL_KERN, KERN_TIMEX, CTL_EOL); 335 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 336 CTLTYPE_INT, "autonicetime", NULL, 337 sysctl_kern_autonice, 0, &autonicetime, 0, 338 CTL_KERN, KERN_AUTONICETIME, CTL_EOL); 339 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 340 CTLTYPE_INT, "autoniceval", NULL, 341 sysctl_kern_autonice, 0, &autoniceval, 0, 342 CTL_KERN, KERN_AUTONICEVAL, CTL_EOL); 343 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 344 CTLTYPE_INT, "rtc_offset", NULL, 345 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 346 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 347 sysctl_createv(SYSCTL_PERMANENT, 348 CTLTYPE_STRING, "root_device", NULL, 349 sysctl_root_device, 0, NULL, 0, 350 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 351 sysctl_createv(SYSCTL_PERMANENT, 352 CTLTYPE_INT, "msgbufsize", NULL, 353 sysctl_msgbuf, 0, &msgbufp->msg_bufs, 0, 354 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 355 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 356 CTLTYPE_INT, "fsync", NULL, 357 NULL, 1, NULL, 0, 358 CTL_KERN, KERN_FSYNC, CTL_EOL); 359 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 360 CTLTYPE_INT, "sysvmsg", NULL, NULL, 361 #ifdef SYSVMSG 362 1, 363 #else /* SYSVMSG */ 364 0, 365 #endif /* SYSVMSG */ 366 NULL, 0, CTL_KERN, KERN_SYSVMSG, CTL_EOL); 367 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 368 CTLTYPE_INT, "sysvsem", NULL, NULL, 369 #ifdef SYSVSEM 370 1, 371 #else /* SYSVSEM */ 372 0, 373 #endif /* SYSVSEM */ 374 NULL, 0, CTL_KERN, KERN_SYSVSEM, CTL_EOL); 375 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 376 CTLTYPE_INT, "sysvshm", NULL, NULL, 377 #ifdef SYSVSHM 378 1, 379 #else /* SYSVSHM */ 380 0, 381 #endif /* SYSVSHM */ 382 NULL, 0, CTL_KERN, KERN_SYSVSHM, CTL_EOL); 383 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 384 CTLTYPE_INT, "synchronized_io", NULL, 385 NULL, 1, NULL, 0, 386 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 387 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 388 CTLTYPE_INT, "iov_max", NULL, 389 NULL, IOV_MAX, NULL, 0, 390 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 391 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 392 CTLTYPE_INT, "mapped_files", NULL, 393 NULL, 1, NULL, 0, 394 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 395 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 396 CTLTYPE_INT, "memlock", NULL, 397 NULL, 1, NULL, 0, 398 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 399 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 400 CTLTYPE_INT, "memlock_range", NULL, 401 NULL, 1, NULL, 0, 402 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 403 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 404 CTLTYPE_INT, "memory_protection", NULL, 405 NULL, 1, NULL, 0, 406 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 407 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 408 CTLTYPE_INT, "login_name_max", NULL, 409 NULL, LOGIN_NAME_MAX, NULL, 0, 410 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 411 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 412 CTLTYPE_STRING, "defcorename", NULL, 413 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 414 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 415 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 416 CTLTYPE_INT, "logsigexit", NULL, 417 NULL, 0, &kern_logsigexit, 0, 418 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 419 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 420 CTLTYPE_INT, "fscale", NULL, 421 NULL, FSCALE, NULL, 0, 422 CTL_KERN, KERN_FSCALE, CTL_EOL); 423 sysctl_createv(SYSCTL_PERMANENT, 424 CTLTYPE_INT, "ccpu", NULL, 425 NULL, 0, &ccpu, 0, 426 CTL_KERN, KERN_CCPU, CTL_EOL); 427 sysctl_createv(SYSCTL_PERMANENT, 428 CTLTYPE_STRUCT, "cp_time", NULL, 429 sysctl_kern_cptime, 0, NULL, 0, 430 CTL_KERN, KERN_CP_TIME, CTL_EOL); 431 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 432 sysctl_createv(SYSCTL_PERMANENT, 433 CTLTYPE_STRUCT, "sysvipc_info", NULL, 434 sysctl_kern_sysvipc, 0, NULL, 0, 435 CTL_KERN, KERN_SYSVIPC_INFO, CTL_EOL); 436 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 437 sysctl_createv(SYSCTL_PERMANENT, 438 CTLTYPE_INT, "msgbuf", NULL, 439 sysctl_msgbuf, 0, NULL, 0, 440 CTL_KERN, KERN_MSGBUF, CTL_EOL); 441 sysctl_createv(SYSCTL_PERMANENT, 442 CTLTYPE_STRUCT, "consdev", NULL, 443 sysctl_consdev, 0, NULL, sizeof(dev_t), 444 CTL_KERN, KERN_CONSDEV, CTL_EOL); 445 #if NPTY > 0 446 sysctl_createv(SYSCTL_PERMANENT, 447 CTLTYPE_INT, "maxptys", NULL, 448 sysctl_kern_maxptys, 0, NULL, 0, 449 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 450 #endif /* NPTY > 0 */ 451 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 452 CTLTYPE_INT, "maxphys", NULL, 453 NULL, MAXPHYS, NULL, 0, 454 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 455 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 456 CTLTYPE_INT, "sbmax", NULL, 457 sysctl_kern_sbmax, 0, NULL, 0, 458 CTL_KERN, KERN_SBMAX, CTL_EOL); 459 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 460 CTLTYPE_INT, "monotonic_clock", NULL, 461 /* XXX _POSIX_VERSION */ 462 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 463 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 464 sysctl_createv(SYSCTL_PERMANENT, 465 CTLTYPE_INT, "urandom", NULL, 466 sysctl_kern_urnd, 0, NULL, 0, 467 CTL_KERN, KERN_URND, CTL_EOL); 468 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 469 CTLTYPE_INT, "labelsector", NULL, 470 NULL, LABELSECTOR, NULL, 0, 471 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 472 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 473 CTLTYPE_INT, "labeloffset", NULL, 474 NULL, LABELOFFSET, NULL, 0, 475 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 476 sysctl_createv(SYSCTL_PERMANENT, 477 CTLTYPE_NODE, "lwp", NULL, 478 sysctl_kern_lwp, 0, NULL, 0, 479 CTL_KERN, KERN_LWP, CTL_EOL); 480 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 481 CTLTYPE_INT, "forkfsleep", NULL, 482 sysctl_kern_forkfsleep, 0, NULL, 0, 483 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 484 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 485 CTLTYPE_INT, "posix_threads", NULL, 486 /* XXX _POSIX_VERSION */ 487 NULL, _POSIX_THREADS, NULL, 0, 488 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 489 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 490 CTLTYPE_INT, "posix_semaphores", NULL, NULL, 491 #ifdef P1003_1B_SEMAPHORE 492 200112, 493 #else /* P1003_1B_SEMAPHORE */ 494 0, 495 #endif /* P1003_1B_SEMAPHORE */ 496 NULL, 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 497 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 498 CTLTYPE_INT, "posix_barriers", NULL, 499 /* XXX _POSIX_VERSION */ 500 NULL, _POSIX_BARRIERS, NULL, 0, 501 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 502 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 503 CTLTYPE_INT, "posix_timers", NULL, 504 /* XXX _POSIX_VERSION */ 505 NULL, _POSIX_TIMERS, NULL, 0, 506 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 507 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 508 CTLTYPE_INT, "posix_spin_locks", NULL, 509 /* XXX _POSIX_VERSION */ 510 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 511 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 512 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 513 CTLTYPE_INT, "posix_reader_writer_locks", NULL, 514 /* XXX _POSIX_VERSION */ 515 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 516 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 517 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 518 CTLTYPE_INT, "dump_on_panic", NULL, 519 NULL, 0, &dumponpanic, 0, 520 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 521 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 522 CTLTYPE_INT, "somaxkva", NULL, 523 sysctl_kern_somaxkva, 0, NULL, 0, 524 CTL_KERN, KERN_SOMAXKVA, CTL_EOL); 525 sysctl_createv(SYSCTL_PERMANENT, 526 CTLTYPE_INT, "root_partition", NULL, 527 sysctl_kern_root_partition, 0, NULL, 0, 528 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 529 sysctl_createv(SYSCTL_PERMANENT, 530 CTLTYPE_STRUCT, "drivers", NULL, 531 sysctl_kern_drivers, 0, NULL, 0, 532 CTL_KERN, KERN_DRIVERS, CTL_EOL); 533 } 534 535 SYSCTL_SETUP(sysctl_kern_proc_setup, 536 "sysctl kern.proc/proc2/proc_args subtree setup") 537 { 538 539 sysctl_createv(SYSCTL_PERMANENT, 540 CTLTYPE_NODE, "kern", NULL, 541 NULL, 0, NULL, 0, 542 CTL_KERN, CTL_EOL); 543 544 sysctl_createv(SYSCTL_PERMANENT, 545 CTLTYPE_NODE, "proc", NULL, 546 sysctl_doeproc, 0, NULL, 0, 547 CTL_KERN, KERN_PROC, CTL_EOL); 548 sysctl_createv(SYSCTL_PERMANENT, 549 CTLTYPE_NODE, "proc2", NULL, 550 sysctl_doeproc, 0, NULL, 0, 551 CTL_KERN, KERN_PROC2, CTL_EOL); 552 sysctl_createv(SYSCTL_PERMANENT, 553 CTLTYPE_NODE, "proc_args", NULL, 554 sysctl_kern_proc_args, 0, NULL, 0, 555 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 556 557 /* 558 "nodes" under these: 559 560 KERN_PROC_ALL 561 KERN_PROC_PID pid 562 KERN_PROC_PGRP pgrp 563 KERN_PROC_SESSION sess 564 KERN_PROC_TTY tty 565 KERN_PROC_UID uid 566 KERN_PROC_RUID uid 567 KERN_PROC_GID gid 568 KERN_PROC_RGID gid 569 570 all in all, probably not worth the effort... 571 */ 572 } 573 574 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 575 { 576 u_int u; 577 u_quad_t q; 578 579 sysctl_createv(SYSCTL_PERMANENT, 580 CTLTYPE_NODE, "hw", NULL, 581 NULL, 0, NULL, 0, 582 CTL_HW, CTL_EOL); 583 584 sysctl_createv(SYSCTL_PERMANENT, 585 CTLTYPE_STRING, "machine", NULL, 586 NULL, 0, machine, 0, 587 CTL_HW, HW_MACHINE, CTL_EOL); 588 sysctl_createv(SYSCTL_PERMANENT, 589 CTLTYPE_STRING, "model", NULL, 590 NULL, 0, cpu_model, 0, 591 CTL_HW, HW_MODEL, CTL_EOL); 592 sysctl_createv(SYSCTL_PERMANENT, 593 CTLTYPE_INT, "ncpu", NULL, 594 sysctl_hw_ncpu, 0, NULL, 0, 595 CTL_HW, HW_NCPU, CTL_EOL); 596 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 597 CTLTYPE_INT, "byteorder", NULL, 598 NULL, BYTE_ORDER, NULL, 0, 599 CTL_HW, HW_BYTEORDER, CTL_EOL); 600 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 601 UINT_MAX : physmem * PAGE_SIZE; 602 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 603 CTLTYPE_INT, "physmem", NULL, 604 NULL, u, NULL, 0, 605 CTL_HW, HW_PHYSMEM, CTL_EOL); 606 sysctl_createv(SYSCTL_PERMANENT, 607 CTLTYPE_INT, "usermem", NULL, 608 sysctl_hw_usermem, 0, NULL, 0, 609 CTL_HW, HW_USERMEM, CTL_EOL); 610 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 611 CTLTYPE_INT, "pagesize", NULL, 612 NULL, PAGE_SIZE, NULL, 0, 613 CTL_HW, HW_PAGESIZE, CTL_EOL); 614 sysctl_createv(SYSCTL_PERMANENT, 615 CTLTYPE_STRING, "disknames", NULL, 616 sysctl_hw_disknames, 0, NULL, 0, 617 CTL_HW, HW_DISKNAMES, CTL_EOL); 618 sysctl_createv(SYSCTL_PERMANENT, 619 CTLTYPE_STRUCT, "diskstats", NULL, 620 sysctl_hw_diskstats, 0, NULL, 0, 621 CTL_HW, HW_DISKSTATS, CTL_EOL); 622 sysctl_createv(SYSCTL_PERMANENT, 623 CTLTYPE_STRING, "machine_arch", NULL, 624 NULL, 0, machine_arch, 0, 625 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 626 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 627 CTLTYPE_INT, "alignbytes", NULL, 628 NULL, ALIGNBYTES, NULL, 0, 629 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 630 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE|SYSCTL_HEX, 631 CTLTYPE_STRING, "cnmagic", NULL, 632 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 633 CTL_HW, HW_CNMAGIC, CTL_EOL); 634 q = (u_quad_t)physmem * PAGE_SIZE; 635 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 636 CTLTYPE_QUAD, "physmem64", NULL, 637 NULL, q, NULL, 0, 638 CTL_HW, HW_PHYSMEM64, CTL_EOL); 639 sysctl_createv(SYSCTL_PERMANENT, 640 CTLTYPE_QUAD, "usermem64", NULL, 641 sysctl_hw_usermem, 0, NULL, 0, 642 CTL_HW, HW_USERMEM64, CTL_EOL); 643 } 644 645 #ifdef DEBUG 646 /* 647 * Debugging related system variables. 648 */ 649 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 650 struct ctldebug debug5, debug6, debug7, debug8, debug9; 651 struct ctldebug debug10, debug11, debug12, debug13, debug14; 652 struct ctldebug debug15, debug16, debug17, debug18, debug19; 653 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 654 &debug0, &debug1, &debug2, &debug3, &debug4, 655 &debug5, &debug6, &debug7, &debug8, &debug9, 656 &debug10, &debug11, &debug12, &debug13, &debug14, 657 &debug15, &debug16, &debug17, &debug18, &debug19, 658 }; 659 660 /* 661 * this setup routine is a replacement for debug_sysctl() 662 * 663 * note that it creates several nodes per defined debug variable 664 */ 665 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 666 { 667 struct ctldebug *cdp; 668 char nodename[20]; 669 int i; 670 671 /* 672 * two ways here: 673 * 674 * the "old" way (debug.name -> value) which was emulated by 675 * the sysctl(8) binary 676 * 677 * the new way, which the sysctl(8) binary was actually using 678 679 node debug 680 node debug.0 681 string debug.0.name 682 int debug.0.value 683 int debug.name 684 685 */ 686 687 sysctl_createv(SYSCTL_PERMANENT, 688 CTLTYPE_NODE, "debug", NULL, 689 NULL, 0, NULL, 0, 690 CTL_DEBUG, CTL_EOL); 691 692 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 693 cdp = debugvars[i]; 694 if (cdp->debugname == NULL || cdp->debugvar == NULL) 695 continue; 696 697 snprintf(nodename, sizeof(nodename), "debug%d", i); 698 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 699 CTLTYPE_NODE, nodename, NULL, 700 NULL, 0, NULL, 0, 701 CTL_DEBUG, i, CTL_EOL); 702 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 703 CTLTYPE_STRING, "name", NULL, 704 NULL, 0, cdp->debugname, 0, 705 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 706 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 707 CTLTYPE_INT, "value", NULL, 708 NULL, 0, cdp->debugvar, 0, 709 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 710 sysctl_createv(SYSCTL_PERMANENT, 711 CTLTYPE_INT, cdp->debugname, NULL, 712 NULL, 0, cdp->debugvar, 0, 713 CTL_DEBUG, CTL_CREATE, CTL_EOL); 714 } 715 } 716 #endif /* DEBUG */ 717 718 /* 719 * ******************************************************************** 720 * section 2: private node-specific helper routines. 721 * ******************************************************************** 722 */ 723 724 /* 725 * sysctl helper routine for kern.maxvnodes. drain vnodes if 726 * new value is lower than desiredvnodes and then calls reinit 727 * routines that needs to adjust to the new value. 728 */ 729 static int 730 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 731 { 732 int error, new_vnodes, old_vnodes; 733 struct sysctlnode node; 734 735 new_vnodes = desiredvnodes; 736 node = *rnode; 737 node.sysctl_data = &new_vnodes; 738 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 739 if (error || newp == NULL) 740 return (error); 741 742 old_vnodes = desiredvnodes; 743 desiredvnodes = new_vnodes; 744 if (new_vnodes < old_vnodes) { 745 error = vfs_drainvnodes(new_vnodes, l->l_proc); 746 if (error) { 747 desiredvnodes = old_vnodes; 748 return (error); 749 } 750 } 751 vfs_reinit(); 752 nchreinit(); 753 754 return (0); 755 } 756 757 /* 758 * sysctl helper routine for rtc_offset - set time after changes 759 */ 760 static int 761 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 762 { 763 struct timeval tv, delta; 764 int s, error, new_rtc_offset; 765 struct sysctlnode node; 766 767 new_rtc_offset = rtc_offset; 768 node = *rnode; 769 node.sysctl_data = &new_rtc_offset; 770 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 771 if (error || newp == NULL) 772 return (error); 773 774 if (securelevel > 0) 775 return (EPERM); 776 if (rtc_offset == new_rtc_offset) 777 return (0); 778 779 /* if we change the offset, adjust the time */ 780 s = splclock(); 781 tv = time; 782 splx(s); 783 delta.tv_sec = 60*(new_rtc_offset - rtc_offset); 784 delta.tv_usec = 0; 785 timeradd(&tv, &delta, &tv); 786 rtc_offset = new_rtc_offset; 787 settime(&tv); 788 789 return (0); 790 } 791 792 /* 793 * sysctl helper routine for kern.maxvnodes. ensures that the new 794 * values are not too low or too high. 795 */ 796 static int 797 sysctl_kern_maxproc(SYSCTLFN_ARGS) 798 { 799 int error, nmaxproc; 800 struct sysctlnode node; 801 802 nmaxproc = maxproc; 803 node = *rnode; 804 node.sysctl_data = &nmaxproc; 805 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 806 if (error || newp == NULL) 807 return (error); 808 809 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 810 return (EINVAL); 811 #ifdef __HAVE_CPU_MAXPROC 812 if (nmaxproc > cpu_maxproc()) 813 return (EINVAL); 814 #endif 815 maxproc = nmaxproc; 816 817 return (0); 818 } 819 820 /* 821 * sysctl helper routine for kern.securelevel. ensures that the value 822 * only rises unless the caller has pid 1 (assumed to be init). 823 */ 824 static int 825 sysctl_kern_securelevel(SYSCTLFN_ARGS) 826 { 827 int newsecurelevel, error; 828 struct sysctlnode node; 829 830 newsecurelevel = securelevel; 831 node = *rnode; 832 node.sysctl_data = &newsecurelevel; 833 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 834 if (error || newp == NULL) 835 return (error); 836 837 if (newsecurelevel < securelevel && l->l_proc->p_pid != 1) 838 return (EPERM); 839 securelevel = newsecurelevel; 840 841 return (error); 842 } 843 844 /* 845 * sysctl helper function for kern.hostid. the hostid is a long, but 846 * we export it as an int, so we need to give it a little help. 847 */ 848 static int 849 sysctl_kern_hostid(SYSCTLFN_ARGS) 850 { 851 int error, inthostid; 852 struct sysctlnode node; 853 854 inthostid = hostid; /* XXX assumes sizeof int >= sizeof long */ 855 node = *rnode; 856 node.sysctl_data = &inthostid; 857 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 858 if (error || newp == NULL) 859 return (error); 860 861 hostid = inthostid; 862 863 return (0); 864 } 865 866 /* 867 * sysctl helper function for kern.hostname. 868 * we have to adjust hostnamelen after changes. 869 */ 870 static int 871 sysctl_kern_hostname(SYSCTLFN_ARGS) 872 { 873 int error; 874 struct sysctlnode node; 875 876 node = *rnode; 877 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 878 if (error || newp == NULL) 879 return (error); 880 881 hostnamelen = strlen(hostname); 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 && name[0] == 0) { 1102 /* 1103 * you're allowed to ask for the zero'th processor 1104 */ 1105 name++; 1106 namelen--; 1107 } 1108 node.sysctl_data = curcpu()->ci_schedstate.spc_cp_time; 1109 node.sysctl_size = sizeof(curcpu()->ci_schedstate.spc_cp_time); 1110 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1111 1112 #else /* MULTIPROCESSOR */ 1113 1114 u_int64_t *cp_time = NULL; 1115 int error, n = sysctl_ncpus(), i; 1116 struct cpu_info *ci; 1117 CPU_INFO_ITERATOR cii; 1118 1119 /* 1120 * if you specifically pass a buffer that is the size of the 1121 * sum, or if you are probing for the size, you get the "sum" 1122 * of cp_time (and the size thereof) across all processors. 1123 * 1124 * alternately, you can pass an additional mib number and get 1125 * cp_time for that particular processor. 1126 */ 1127 switch (namelen) { 1128 case 0: 1129 if (*oldlenp == sizeof(u_int64_t) * CPUSTATES || oldp == NULL) { 1130 node.sysctl_size = sizeof(u_int64_t) * CPUSTATES; 1131 n = -1; /* SUM */ 1132 } 1133 else { 1134 node.sysctl_size = n * sizeof(u_int64_t) * CPUSTATES; 1135 n = -2; /* ALL */ 1136 } 1137 break; 1138 case 1: 1139 if (name[0] < 0 || name[0] >= n) 1140 return (EINVAL); /* ENOSUCHPROCESSOR */ 1141 node.sysctl_size = sizeof(u_int64_t) * CPUSTATES; 1142 n = name[0]; 1143 /* 1144 * adjust these so that sysctl_lookup() will be happy 1145 */ 1146 name++; 1147 namelen--; 1148 break; 1149 default: 1150 return (EINVAL); 1151 } 1152 1153 cp_time = malloc(node.sysctl_size, M_TEMP, M_WAITOK|M_CANFAIL); 1154 if (cp_time == NULL) 1155 return (ENOMEM); 1156 node.sysctl_data = cp_time; 1157 memset(cp_time, 0, node.sysctl_size); 1158 1159 for (CPU_INFO_FOREACH(cii, ci)) { 1160 if (n <= 0) 1161 for (i = 0; i < CPUSTATES; i++) 1162 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1163 /* 1164 * if a specific processor was requested and we just 1165 * did it, we're done here 1166 */ 1167 if (n == 0) 1168 break; 1169 /* 1170 * if doing "all", skip to next cp_time set for next processor 1171 */ 1172 if (n == -2) 1173 cp_time += CPUSTATES; 1174 /* 1175 * if we're doing a specific processor, we're one 1176 * processor closer 1177 */ 1178 if (n > 0) 1179 n--; 1180 } 1181 1182 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1183 free(node.sysctl_data, M_TEMP); 1184 return (error); 1185 1186 #endif /* MULTIPROCESSOR */ 1187 } 1188 1189 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1190 /* 1191 * sysctl helper routine for kern.sysvipc_info subtree. 1192 */ 1193 1194 #define FILL_PERM(src, dst) do { \ 1195 (dst)._key = (src)._key; \ 1196 (dst).uid = (src).uid; \ 1197 (dst).gid = (src).gid; \ 1198 (dst).cuid = (src).cuid; \ 1199 (dst).cgid = (src).cgid; \ 1200 (dst).mode = (src).mode; \ 1201 (dst)._seq = (src)._seq; \ 1202 } while (/*CONSTCOND*/ 0); 1203 #define FILL_MSG(src, dst) do { \ 1204 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1205 (dst).msg_qnum = (src).msg_qnum; \ 1206 (dst).msg_qbytes = (src).msg_qbytes; \ 1207 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1208 (dst).msg_lspid = (src).msg_lspid; \ 1209 (dst).msg_lrpid = (src).msg_lrpid; \ 1210 (dst).msg_stime = (src).msg_stime; \ 1211 (dst).msg_rtime = (src).msg_rtime; \ 1212 (dst).msg_ctime = (src).msg_ctime; \ 1213 } while (/*CONSTCOND*/ 0) 1214 #define FILL_SEM(src, dst) do { \ 1215 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1216 (dst).sem_nsems = (src).sem_nsems; \ 1217 (dst).sem_otime = (src).sem_otime; \ 1218 (dst).sem_ctime = (src).sem_ctime; \ 1219 } while (/*CONSTCOND*/ 0) 1220 #define FILL_SHM(src, dst) do { \ 1221 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1222 (dst).shm_segsz = (src).shm_segsz; \ 1223 (dst).shm_lpid = (src).shm_lpid; \ 1224 (dst).shm_cpid = (src).shm_cpid; \ 1225 (dst).shm_atime = (src).shm_atime; \ 1226 (dst).shm_dtime = (src).shm_dtime; \ 1227 (dst).shm_ctime = (src).shm_ctime; \ 1228 (dst).shm_nattch = (src).shm_nattch; \ 1229 } while (/*CONSTCOND*/ 0) 1230 1231 static int 1232 sysctl_kern_sysvipc(SYSCTLFN_ARGS) 1233 { 1234 void *where = oldp; 1235 size_t *sizep = oldlenp; 1236 #ifdef SYSVMSG 1237 struct msg_sysctl_info *msgsi = NULL; 1238 #endif 1239 #ifdef SYSVSEM 1240 struct sem_sysctl_info *semsi = NULL; 1241 #endif 1242 #ifdef SYSVSHM 1243 struct shm_sysctl_info *shmsi = NULL; 1244 #endif 1245 size_t infosize, dssize, tsize, buflen; 1246 void *buf = NULL; 1247 char *start; 1248 int32_t nds; 1249 int i, error, ret; 1250 1251 if (namelen != 1) 1252 return (EINVAL); 1253 1254 start = where; 1255 buflen = *sizep; 1256 1257 switch (*name) { 1258 case KERN_SYSVIPC_MSG_INFO: 1259 #ifdef SYSVMSG 1260 infosize = sizeof(msgsi->msginfo); 1261 nds = msginfo.msgmni; 1262 dssize = sizeof(msgsi->msgids[0]); 1263 break; 1264 #else 1265 return (EINVAL); 1266 #endif 1267 case KERN_SYSVIPC_SEM_INFO: 1268 #ifdef SYSVSEM 1269 infosize = sizeof(semsi->seminfo); 1270 nds = seminfo.semmni; 1271 dssize = sizeof(semsi->semids[0]); 1272 break; 1273 #else 1274 return (EINVAL); 1275 #endif 1276 case KERN_SYSVIPC_SHM_INFO: 1277 #ifdef SYSVSHM 1278 infosize = sizeof(shmsi->shminfo); 1279 nds = shminfo.shmmni; 1280 dssize = sizeof(shmsi->shmids[0]); 1281 break; 1282 #else 1283 return (EINVAL); 1284 #endif 1285 default: 1286 return (EINVAL); 1287 } 1288 /* 1289 * Round infosize to 64 bit boundary if requesting more than just 1290 * the info structure or getting the total data size. 1291 */ 1292 if (where == NULL || *sizep > infosize) 1293 infosize = ((infosize + 7) / 8) * 8; 1294 tsize = infosize + nds * dssize; 1295 1296 /* Return just the total size required. */ 1297 if (where == NULL) { 1298 *sizep = tsize; 1299 return (0); 1300 } 1301 1302 /* Not enough room for even the info struct. */ 1303 if (buflen < infosize) { 1304 *sizep = 0; 1305 return (ENOMEM); 1306 } 1307 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1308 memset(buf, 0, min(tsize, buflen)); 1309 1310 switch (*name) { 1311 #ifdef SYSVMSG 1312 case KERN_SYSVIPC_MSG_INFO: 1313 msgsi = (struct msg_sysctl_info *)buf; 1314 msgsi->msginfo = msginfo; 1315 break; 1316 #endif 1317 #ifdef SYSVSEM 1318 case KERN_SYSVIPC_SEM_INFO: 1319 semsi = (struct sem_sysctl_info *)buf; 1320 semsi->seminfo = seminfo; 1321 break; 1322 #endif 1323 #ifdef SYSVSHM 1324 case KERN_SYSVIPC_SHM_INFO: 1325 shmsi = (struct shm_sysctl_info *)buf; 1326 shmsi->shminfo = shminfo; 1327 break; 1328 #endif 1329 } 1330 buflen -= infosize; 1331 1332 ret = 0; 1333 if (buflen > 0) { 1334 /* Fill in the IPC data structures. */ 1335 for (i = 0; i < nds; i++) { 1336 if (buflen < dssize) { 1337 ret = ENOMEM; 1338 break; 1339 } 1340 switch (*name) { 1341 #ifdef SYSVMSG 1342 case KERN_SYSVIPC_MSG_INFO: 1343 FILL_MSG(msqids[i], msgsi->msgids[i]); 1344 break; 1345 #endif 1346 #ifdef SYSVSEM 1347 case KERN_SYSVIPC_SEM_INFO: 1348 FILL_SEM(sema[i], semsi->semids[i]); 1349 break; 1350 #endif 1351 #ifdef SYSVSHM 1352 case KERN_SYSVIPC_SHM_INFO: 1353 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1354 break; 1355 #endif 1356 } 1357 buflen -= dssize; 1358 } 1359 } 1360 *sizep -= buflen; 1361 error = copyout(buf, start, *sizep); 1362 /* If copyout succeeded, use return code set earlier. */ 1363 if (error == 0) 1364 error = ret; 1365 if (buf) 1366 free(buf, M_TEMP); 1367 return (error); 1368 } 1369 1370 #undef FILL_PERM 1371 #undef FILL_MSG 1372 #undef FILL_SEM 1373 #undef FILL_SHM 1374 1375 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 1376 1377 #if NPTY > 0 1378 /* 1379 * sysctl helper routine for kern.maxptys. ensures that any new value 1380 * is acceptable to the pty subsystem. 1381 */ 1382 static int 1383 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1384 { 1385 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1386 int error, max; 1387 struct sysctlnode node; 1388 1389 /* get current value of maxptys */ 1390 max = pty_maxptys(0, 0); 1391 1392 node = *rnode; 1393 node.sysctl_data = &max; 1394 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1395 if (error || newp == NULL) 1396 return (error); 1397 1398 if (max != pty_maxptys(max, 1)) 1399 return (EINVAL); 1400 1401 return (0); 1402 } 1403 #endif /* NPTY > 0 */ 1404 1405 /* 1406 * sysctl helper routine for kern.sbmax. basically just ensures that 1407 * any new value is not too small. 1408 */ 1409 static int 1410 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1411 { 1412 int error, new_sbmax; 1413 struct sysctlnode node; 1414 1415 new_sbmax = sb_max; 1416 node = *rnode; 1417 node.sysctl_data = &new_sbmax; 1418 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1419 if (error || newp == NULL) 1420 return (error); 1421 1422 error = sb_max_set(new_sbmax); 1423 1424 return (error); 1425 } 1426 1427 /* 1428 * sysctl helper routine for kern.urandom node. picks a random number 1429 * for you. 1430 */ 1431 static int 1432 sysctl_kern_urnd(SYSCTLFN_ARGS) 1433 { 1434 #if NRND > 0 1435 int v; 1436 1437 if (rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY) == sizeof(v)) { 1438 struct sysctlnode node = *rnode; 1439 node.sysctl_data = &v; 1440 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1441 } 1442 else 1443 return (EIO); /*XXX*/ 1444 #else 1445 return (EOPNOTSUPP); 1446 #endif 1447 } 1448 1449 /* 1450 * sysctl helper routine to do kern.lwp.* work. 1451 */ 1452 static int 1453 sysctl_kern_lwp(SYSCTLFN_ARGS) 1454 { 1455 struct kinfo_lwp klwp; 1456 struct proc *p; 1457 struct lwp *l2; 1458 char *where, *dp; 1459 int pid, elem_size, elem_count; 1460 int buflen, needed, error; 1461 1462 dp = where = oldp; 1463 buflen = where != NULL ? *oldlenp : 0; 1464 error = needed = 0; 1465 1466 if (newp != NULL || namelen != 3) 1467 return (EINVAL); 1468 pid = name[0]; 1469 elem_size = name[1]; 1470 elem_count = name[2]; 1471 1472 p = pfind(pid); 1473 if (p == NULL) 1474 return (ESRCH); 1475 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1476 if (buflen >= elem_size && elem_count > 0) { 1477 fill_lwp(l2, &klwp); 1478 /* 1479 * Copy out elem_size, but not larger than 1480 * the size of a struct kinfo_proc2. 1481 */ 1482 error = copyout(&klwp, dp, 1483 min(sizeof(klwp), elem_size)); 1484 if (error) 1485 goto cleanup; 1486 dp += elem_size; 1487 buflen -= elem_size; 1488 elem_count--; 1489 } 1490 needed += elem_size; 1491 } 1492 1493 if (where != NULL) { 1494 *oldlenp = dp - where; 1495 if (needed > *oldlenp) 1496 return (ENOMEM); 1497 } else { 1498 needed += KERN_PROCSLOP; 1499 *oldlenp = needed; 1500 } 1501 return (0); 1502 cleanup: 1503 return (error); 1504 } 1505 1506 /* 1507 * sysctl helper routine for kern.forkfsleep node. ensures that the 1508 * given value is not too large or two small, and is at least one 1509 * timer tick if not zero. 1510 */ 1511 static int 1512 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1513 { 1514 /* userland sees value in ms, internally is in ticks */ 1515 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1516 int error, timo, lsleep; 1517 struct sysctlnode node; 1518 1519 lsleep = forkfsleep * 1000 / hz; 1520 node = *rnode; 1521 node.sysctl_data = &lsleep; 1522 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1523 if (error || newp == NULL) 1524 return (error); 1525 1526 /* refuse negative values, and overly 'long time' */ 1527 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1528 return (EINVAL); 1529 1530 timo = mstohz(lsleep); 1531 1532 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1533 if (lsleep != 0 && timo == 0) 1534 forkfsleep = 1; 1535 else 1536 forkfsleep = timo; 1537 1538 return (0); 1539 } 1540 1541 /* 1542 * sysctl helper routine for kern.somaxkva. ensures that the given 1543 * value is not too small. 1544 * (XXX should we maybe make sure it's not too large as well?) 1545 */ 1546 static int 1547 sysctl_kern_somaxkva(SYSCTLFN_ARGS) 1548 { 1549 int error, new_somaxkva; 1550 struct sysctlnode node; 1551 1552 new_somaxkva = somaxkva; 1553 node = *rnode; 1554 node.sysctl_data = &new_somaxkva; 1555 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1556 if (error || newp == NULL) 1557 return (error); 1558 1559 if (new_somaxkva < (16 * 1024 * 1024)) /* sanity */ 1560 return (EINVAL); 1561 somaxkva = new_somaxkva; 1562 1563 return (error); 1564 } 1565 1566 /* 1567 * sysctl helper routine for kern.root_partition 1568 */ 1569 static int 1570 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1571 { 1572 int rootpart = DISKPART(rootdev); 1573 struct sysctlnode node = *rnode; 1574 1575 node.sysctl_data = &rootpart; 1576 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1577 } 1578 1579 /* 1580 * sysctl helper function for kern.drivers 1581 */ 1582 static int 1583 sysctl_kern_drivers(SYSCTLFN_ARGS) 1584 { 1585 int error; 1586 size_t buflen; 1587 struct kinfo_drivers kd; 1588 char *start, *where; 1589 const char *dname; 1590 int i; 1591 extern struct devsw_conv *devsw_conv; 1592 extern int max_devsw_convs; 1593 1594 if (newp != NULL || namelen != 0) 1595 return (EINVAL); 1596 1597 start = where = oldp; 1598 buflen = *oldlenp; 1599 if (where == NULL) { 1600 *oldlenp = max_devsw_convs * sizeof kd; 1601 return 0; 1602 } 1603 1604 /* 1605 * An array of kinfo_drivers structures 1606 */ 1607 error = 0; 1608 for (i = 0; i < max_devsw_convs; i++) { 1609 dname = devsw_conv[i].d_name; 1610 if (dname == NULL) 1611 continue; 1612 if (buflen < sizeof kd) { 1613 error = ENOMEM; 1614 break; 1615 } 1616 kd.d_bmajor = devsw_conv[i].d_bmajor; 1617 kd.d_cmajor = devsw_conv[i].d_cmajor; 1618 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1619 error = copyout(&kd, where, sizeof kd); 1620 if (error != 0) 1621 break; 1622 buflen -= sizeof kd; 1623 where += sizeof kd; 1624 } 1625 *oldlenp = where - start; 1626 return error; 1627 } 1628 1629 static int 1630 sysctl_doeproc(SYSCTLFN_ARGS) 1631 { 1632 struct eproc eproc; 1633 struct kinfo_proc2 kproc2; 1634 struct kinfo_proc *dp; 1635 struct proc *p; 1636 const struct proclist_desc *pd; 1637 char *where, *dp2; 1638 int type, op, arg; 1639 u_int elem_size, elem_count; 1640 size_t buflen, needed; 1641 int error; 1642 1643 dp = oldp; 1644 dp2 = where = oldp; 1645 buflen = where != NULL ? *oldlenp : 0; 1646 error = 0; 1647 needed = 0; 1648 type = rnode->sysctl_num; 1649 1650 if (type == KERN_PROC) { 1651 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 1652 return (EINVAL); 1653 op = name[0]; 1654 if (op != KERN_PROC_ALL) 1655 arg = name[1]; 1656 else 1657 arg = 0; /* Quell compiler warning */ 1658 elem_size = elem_count = 0; /* Ditto */ 1659 } else { 1660 if (namelen != 4) 1661 return (EINVAL); 1662 op = name[0]; 1663 arg = name[1]; 1664 elem_size = name[2]; 1665 elem_count = name[3]; 1666 } 1667 1668 proclist_lock_read(); 1669 1670 pd = proclists; 1671 again: 1672 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1673 /* 1674 * Skip embryonic processes. 1675 */ 1676 if (p->p_stat == SIDL) 1677 continue; 1678 /* 1679 * TODO - make more efficient (see notes below). 1680 * do by session. 1681 */ 1682 switch (op) { 1683 1684 case KERN_PROC_PID: 1685 /* could do this with just a lookup */ 1686 if (p->p_pid != (pid_t)arg) 1687 continue; 1688 break; 1689 1690 case KERN_PROC_PGRP: 1691 /* could do this by traversing pgrp */ 1692 if (p->p_pgrp->pg_id != (pid_t)arg) 1693 continue; 1694 break; 1695 1696 case KERN_PROC_SESSION: 1697 if (p->p_session->s_sid != (pid_t)arg) 1698 continue; 1699 break; 1700 1701 case KERN_PROC_TTY: 1702 if (arg == (int) KERN_PROC_TTY_REVOKE) { 1703 if ((p->p_flag & P_CONTROLT) == 0 || 1704 p->p_session->s_ttyp == NULL || 1705 p->p_session->s_ttyvp != NULL) 1706 continue; 1707 } else if ((p->p_flag & P_CONTROLT) == 0 || 1708 p->p_session->s_ttyp == NULL) { 1709 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1710 continue; 1711 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1712 continue; 1713 break; 1714 1715 case KERN_PROC_UID: 1716 if (p->p_ucred->cr_uid != (uid_t)arg) 1717 continue; 1718 break; 1719 1720 case KERN_PROC_RUID: 1721 if (p->p_cred->p_ruid != (uid_t)arg) 1722 continue; 1723 break; 1724 1725 case KERN_PROC_GID: 1726 if (p->p_ucred->cr_gid != (uid_t)arg) 1727 continue; 1728 break; 1729 1730 case KERN_PROC_RGID: 1731 if (p->p_cred->p_rgid != (uid_t)arg) 1732 continue; 1733 break; 1734 1735 case KERN_PROC_ALL: 1736 /* allow everything */ 1737 break; 1738 1739 default: 1740 error = EINVAL; 1741 goto cleanup; 1742 } 1743 if (type == KERN_PROC) { 1744 if (buflen >= sizeof(struct kinfo_proc)) { 1745 fill_eproc(p, &eproc); 1746 error = copyout(p, &dp->kp_proc, 1747 sizeof(struct proc)); 1748 if (error) 1749 goto cleanup; 1750 error = copyout(&eproc, &dp->kp_eproc, 1751 sizeof(eproc)); 1752 if (error) 1753 goto cleanup; 1754 dp++; 1755 buflen -= sizeof(struct kinfo_proc); 1756 } 1757 needed += sizeof(struct kinfo_proc); 1758 } else { /* KERN_PROC2 */ 1759 if (buflen >= elem_size && elem_count > 0) { 1760 fill_kproc2(p, &kproc2); 1761 /* 1762 * Copy out elem_size, but not larger than 1763 * the size of a struct kinfo_proc2. 1764 */ 1765 error = copyout(&kproc2, dp2, 1766 min(sizeof(kproc2), elem_size)); 1767 if (error) 1768 goto cleanup; 1769 dp2 += elem_size; 1770 buflen -= elem_size; 1771 elem_count--; 1772 } 1773 needed += elem_size; 1774 } 1775 } 1776 pd++; 1777 if (pd->pd_list != NULL) 1778 goto again; 1779 proclist_unlock_read(); 1780 1781 if (where != NULL) { 1782 if (type == KERN_PROC) 1783 *oldlenp = (char *)dp - where; 1784 else 1785 *oldlenp = dp2 - where; 1786 if (needed > *oldlenp) 1787 return (ENOMEM); 1788 } else { 1789 needed += KERN_LWPSLOP; 1790 *oldlenp = needed; 1791 } 1792 return (0); 1793 cleanup: 1794 proclist_unlock_read(); 1795 return (error); 1796 } 1797 1798 /* 1799 * sysctl helper routine for kern.proc_args pseudo-subtree. 1800 */ 1801 static int 1802 sysctl_kern_proc_args(SYSCTLFN_ARGS) 1803 { 1804 struct ps_strings pss; 1805 struct proc *p, *up = l->l_proc; 1806 size_t len, upper_bound, xlen, i; 1807 struct uio auio; 1808 struct iovec aiov; 1809 vaddr_t argv; 1810 pid_t pid; 1811 int nargv, type, error; 1812 char *arg; 1813 char *tmp; 1814 1815 if (newp != NULL || namelen != 2) 1816 return (EINVAL); 1817 pid = name[0]; 1818 type = name[1]; 1819 1820 switch (type) { 1821 case KERN_PROC_ARGV: 1822 case KERN_PROC_NARGV: 1823 case KERN_PROC_ENV: 1824 case KERN_PROC_NENV: 1825 /* ok */ 1826 break; 1827 default: 1828 return (EINVAL); 1829 } 1830 1831 /* check pid */ 1832 if ((p = pfind(pid)) == NULL) 1833 return (EINVAL); 1834 1835 /* only root or same user change look at the environment */ 1836 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1837 if (up->p_ucred->cr_uid != 0) { 1838 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1839 up->p_cred->p_ruid != p->p_cred->p_svuid) 1840 return (EPERM); 1841 } 1842 } 1843 1844 if (oldp == NULL) { 1845 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1846 *oldlenp = sizeof (int); 1847 else 1848 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 1849 return (0); 1850 } 1851 1852 /* 1853 * Zombies don't have a stack, so we can't read their psstrings. 1854 * System processes also don't have a user stack. 1855 */ 1856 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1857 return (EINVAL); 1858 1859 /* 1860 * Lock the process down in memory. 1861 */ 1862 /* XXXCDC: how should locking work here? */ 1863 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1864 return (EFAULT); 1865 1866 p->p_vmspace->vm_refcnt++; /* XXX */ 1867 1868 /* 1869 * Allocate a temporary buffer to hold the arguments. 1870 */ 1871 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1872 1873 /* 1874 * Read in the ps_strings structure. 1875 */ 1876 aiov.iov_base = &pss; 1877 aiov.iov_len = sizeof(pss); 1878 auio.uio_iov = &aiov; 1879 auio.uio_iovcnt = 1; 1880 auio.uio_offset = (vaddr_t)p->p_psstr; 1881 auio.uio_resid = sizeof(pss); 1882 auio.uio_segflg = UIO_SYSSPACE; 1883 auio.uio_rw = UIO_READ; 1884 auio.uio_procp = NULL; 1885 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1886 if (error) 1887 goto done; 1888 1889 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1890 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1891 else 1892 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1893 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1894 error = copyout(&nargv, oldp, sizeof(nargv)); 1895 *oldlenp = sizeof(nargv); 1896 goto done; 1897 } 1898 /* 1899 * Now read the address of the argument vector. 1900 */ 1901 switch (type) { 1902 case KERN_PROC_ARGV: 1903 /* XXX compat32 stuff here */ 1904 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1905 break; 1906 case KERN_PROC_ENV: 1907 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1908 break; 1909 default: 1910 return (EINVAL); 1911 } 1912 auio.uio_offset = (off_t)(long)tmp; 1913 aiov.iov_base = &argv; 1914 aiov.iov_len = sizeof(argv); 1915 auio.uio_iov = &aiov; 1916 auio.uio_iovcnt = 1; 1917 auio.uio_resid = sizeof(argv); 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 /* 1926 * Now copy in the actual argument vector, one page at a time, 1927 * since we don't know how long the vector is (though, we do 1928 * know how many NUL-terminated strings are in the vector). 1929 */ 1930 len = 0; 1931 upper_bound = *oldlenp; 1932 for (; nargv != 0 && len < upper_bound; len += xlen) { 1933 aiov.iov_base = arg; 1934 aiov.iov_len = PAGE_SIZE; 1935 auio.uio_iov = &aiov; 1936 auio.uio_iovcnt = 1; 1937 auio.uio_offset = argv + len; 1938 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1939 auio.uio_resid = xlen; 1940 auio.uio_segflg = UIO_SYSSPACE; 1941 auio.uio_rw = UIO_READ; 1942 auio.uio_procp = NULL; 1943 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1944 if (error) 1945 goto done; 1946 1947 for (i = 0; i < xlen && nargv != 0; i++) { 1948 if (arg[i] == '\0') 1949 nargv--; /* one full string */ 1950 } 1951 1952 /* 1953 * Make sure we don't copyout past the end of the user's 1954 * buffer. 1955 */ 1956 if (len + i > upper_bound) 1957 i = upper_bound - len; 1958 1959 error = copyout(arg, (char *)oldp + len, i); 1960 if (error) 1961 break; 1962 1963 if (nargv == 0) { 1964 len += i; 1965 break; 1966 } 1967 } 1968 *oldlenp = len; 1969 1970 done: 1971 uvmspace_free(p->p_vmspace); 1972 1973 free(arg, M_TEMP); 1974 return (error); 1975 } 1976 1977 /* 1978 * sysctl helper routine for hw.usermem and hw.usermem64. values are 1979 * calculate on the fly taking into account integer overflow and the 1980 * current wired count. 1981 */ 1982 static int 1983 sysctl_hw_usermem(SYSCTLFN_ARGS) 1984 { 1985 u_int ui; 1986 u_quad_t uq; 1987 struct sysctlnode node; 1988 1989 node = *rnode; 1990 switch (rnode->sysctl_num) { 1991 case HW_USERMEM: 1992 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1993 ui = UINT_MAX; 1994 else 1995 ui *= PAGE_SIZE; 1996 node.sysctl_data = &ui; 1997 break; 1998 case HW_USERMEM64: 1999 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2000 node.sysctl_data = &uq; 2001 break; 2002 default: 2003 return (EINVAL); 2004 } 2005 2006 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2007 } 2008 2009 /* 2010 * sysctl helper routine for kern.cnmagic node. pulls the old value 2011 * out, encoded, and stuffs the new value in for decoding. 2012 */ 2013 static int 2014 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2015 { 2016 char magic[CNS_LEN]; 2017 int error; 2018 struct sysctlnode node; 2019 2020 if (oldp) 2021 cn_get_magic(magic, CNS_LEN); 2022 node = *rnode; 2023 node.sysctl_data = &magic[0]; 2024 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2025 if (error || newp == NULL) 2026 return (error); 2027 2028 return (cn_set_magic(magic)); 2029 } 2030 2031 static int 2032 sysctl_hw_ncpu(SYSCTLFN_ARGS) 2033 { 2034 int ncpu; 2035 struct sysctlnode node; 2036 2037 ncpu = sysctl_ncpus(); 2038 node = *rnode; 2039 node.sysctl_data = &ncpu; 2040 2041 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2042 } 2043 2044 2045 /* 2046 * ******************************************************************** 2047 * section 3: public helper routines that are used for more than one 2048 * node 2049 * ******************************************************************** 2050 */ 2051 2052 /* 2053 * sysctl helper routine for the kern.root_device node and some ports' 2054 * machdep.root_device nodes. 2055 */ 2056 int 2057 sysctl_root_device(SYSCTLFN_ARGS) 2058 { 2059 struct sysctlnode node; 2060 2061 node = *rnode; 2062 node.sysctl_data = root_device->dv_xname; 2063 node.sysctl_size = strlen(root_device->dv_xname) + 1; 2064 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2065 } 2066 2067 /* 2068 * sysctl helper routine for kern.consdev, dependent on the current 2069 * state of the console. also used for machdep.console_device on some 2070 * ports. 2071 */ 2072 int 2073 sysctl_consdev(SYSCTLFN_ARGS) 2074 { 2075 dev_t consdev; 2076 struct sysctlnode node; 2077 2078 if (cn_tab != NULL) 2079 consdev = cn_tab->cn_dev; 2080 else 2081 consdev = NODEV; 2082 node = *rnode; 2083 node.sysctl_data = &consdev; 2084 node.sysctl_size = sizeof(consdev); 2085 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2086 } 2087 2088 /* 2089 * ******************************************************************** 2090 * section 4: support for some helpers 2091 * ******************************************************************** 2092 */ 2093 2094 /* 2095 * Fill in a kinfo_proc2 structure for the specified process. 2096 */ 2097 static void 2098 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 2099 { 2100 struct tty *tp; 2101 struct lwp *l; 2102 struct timeval ut, st; 2103 2104 memset(ki, 0, sizeof(*ki)); 2105 2106 ki->p_paddr = PTRTOINT64(p); 2107 ki->p_fd = PTRTOINT64(p->p_fd); 2108 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 2109 ki->p_stats = PTRTOINT64(p->p_stats); 2110 ki->p_limit = PTRTOINT64(p->p_limit); 2111 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 2112 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 2113 ki->p_sess = PTRTOINT64(p->p_session); 2114 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2115 ki->p_ru = PTRTOINT64(p->p_ru); 2116 2117 ki->p_eflag = 0; 2118 ki->p_exitsig = p->p_exitsig; 2119 ki->p_flag = p->p_flag; 2120 2121 ki->p_pid = p->p_pid; 2122 if (p->p_pptr) 2123 ki->p_ppid = p->p_pptr->p_pid; 2124 else 2125 ki->p_ppid = 0; 2126 ki->p_sid = p->p_session->s_sid; 2127 ki->p__pgid = p->p_pgrp->pg_id; 2128 2129 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2130 2131 ki->p_uid = p->p_ucred->cr_uid; 2132 ki->p_ruid = p->p_cred->p_ruid; 2133 ki->p_gid = p->p_ucred->cr_gid; 2134 ki->p_rgid = p->p_cred->p_rgid; 2135 ki->p_svuid = p->p_cred->p_svuid; 2136 ki->p_svgid = p->p_cred->p_svgid; 2137 2138 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 2139 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 2140 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 2141 2142 ki->p_jobc = p->p_pgrp->pg_jobc; 2143 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 2144 ki->p_tdev = tp->t_dev; 2145 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2146 ki->p_tsess = PTRTOINT64(tp->t_session); 2147 } else { 2148 ki->p_tdev = NODEV; 2149 } 2150 2151 ki->p_estcpu = p->p_estcpu; 2152 ki->p_rtime_sec = p->p_rtime.tv_sec; 2153 ki->p_rtime_usec = p->p_rtime.tv_usec; 2154 ki->p_cpticks = p->p_cpticks; 2155 ki->p_pctcpu = p->p_pctcpu; 2156 2157 ki->p_uticks = p->p_uticks; 2158 ki->p_sticks = p->p_sticks; 2159 ki->p_iticks = p->p_iticks; 2160 2161 ki->p_tracep = PTRTOINT64(p->p_tracep); 2162 ki->p_traceflag = p->p_traceflag; 2163 2164 2165 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 2166 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 2167 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2168 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2169 2170 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2171 ki->p_realstat = p->p_stat; 2172 ki->p_nice = p->p_nice; 2173 2174 ki->p_xstat = p->p_xstat; 2175 ki->p_acflag = p->p_acflag; 2176 2177 strncpy(ki->p_comm, p->p_comm, 2178 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2179 2180 strncpy(ki->p_login, p->p_session->s_login, 2181 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 2182 2183 ki->p_nlwps = p->p_nlwps; 2184 ki->p_nrlwps = p->p_nrlwps; 2185 ki->p_realflag = p->p_flag; 2186 2187 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2188 ki->p_vm_rssize = 0; 2189 ki->p_vm_tsize = 0; 2190 ki->p_vm_dsize = 0; 2191 ki->p_vm_ssize = 0; 2192 l = NULL; 2193 } else { 2194 struct vmspace *vm = p->p_vmspace; 2195 2196 ki->p_vm_rssize = vm_resident_count(vm); 2197 ki->p_vm_tsize = vm->vm_tsize; 2198 ki->p_vm_dsize = vm->vm_dsize; 2199 ki->p_vm_ssize = vm->vm_ssize; 2200 2201 /* Pick a "representative" LWP */ 2202 l = proc_representative_lwp(p); 2203 ki->p_forw = PTRTOINT64(l->l_forw); 2204 ki->p_back = PTRTOINT64(l->l_back); 2205 ki->p_addr = PTRTOINT64(l->l_addr); 2206 ki->p_stat = l->l_stat; 2207 ki->p_flag |= l->l_flag; 2208 ki->p_swtime = l->l_swtime; 2209 ki->p_slptime = l->l_slptime; 2210 if (l->l_stat == LSONPROC) { 2211 KDASSERT(l->l_cpu != NULL); 2212 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2213 } else 2214 ki->p_schedflags = 0; 2215 ki->p_holdcnt = l->l_holdcnt; 2216 ki->p_priority = l->l_priority; 2217 ki->p_usrpri = l->l_usrpri; 2218 if (l->l_wmesg) 2219 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 2220 ki->p_wchan = PTRTOINT64(l->l_wchan); 2221 2222 } 2223 2224 if (p->p_session->s_ttyvp) 2225 ki->p_eflag |= EPROC_CTTY; 2226 if (SESS_LEADER(p)) 2227 ki->p_eflag |= EPROC_SLEADER; 2228 2229 /* XXX Is this double check necessary? */ 2230 if (P_ZOMBIE(p)) { 2231 ki->p_uvalid = 0; 2232 } else { 2233 ki->p_uvalid = 1; 2234 2235 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 2236 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 2237 2238 calcru(p, &ut, &st, 0); 2239 ki->p_uutime_sec = ut.tv_sec; 2240 ki->p_uutime_usec = ut.tv_usec; 2241 ki->p_ustime_sec = st.tv_sec; 2242 ki->p_ustime_usec = st.tv_usec; 2243 2244 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 2245 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 2246 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 2247 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 2248 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 2249 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 2250 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 2251 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 2252 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 2253 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 2254 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 2255 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 2256 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 2257 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 2258 2259 timeradd(&p->p_stats->p_cru.ru_utime, 2260 &p->p_stats->p_cru.ru_stime, &ut); 2261 ki->p_uctime_sec = ut.tv_sec; 2262 ki->p_uctime_usec = ut.tv_usec; 2263 } 2264 #ifdef MULTIPROCESSOR 2265 if (l && l->l_cpu != NULL) 2266 ki->p_cpuid = l->l_cpu->ci_cpuid; 2267 else 2268 #endif 2269 ki->p_cpuid = KI_NOCPU; 2270 } 2271 2272 /* 2273 * Fill in a kinfo_lwp structure for the specified lwp. 2274 */ 2275 static void 2276 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 2277 { 2278 2279 kl->l_forw = PTRTOINT64(l->l_forw); 2280 kl->l_back = PTRTOINT64(l->l_back); 2281 kl->l_laddr = PTRTOINT64(l); 2282 kl->l_addr = PTRTOINT64(l->l_addr); 2283 kl->l_stat = l->l_stat; 2284 kl->l_lid = l->l_lid; 2285 kl->l_flag = l->l_flag; 2286 2287 kl->l_swtime = l->l_swtime; 2288 kl->l_slptime = l->l_slptime; 2289 if (l->l_stat == LSONPROC) { 2290 KDASSERT(l->l_cpu != NULL); 2291 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2292 } else 2293 kl->l_schedflags = 0; 2294 kl->l_holdcnt = l->l_holdcnt; 2295 kl->l_priority = l->l_priority; 2296 kl->l_usrpri = l->l_usrpri; 2297 if (l->l_wmesg) 2298 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 2299 kl->l_wchan = PTRTOINT64(l->l_wchan); 2300 #ifdef MULTIPROCESSOR 2301 if (l->l_cpu != NULL) 2302 kl->l_cpuid = l->l_cpu->ci_cpuid; 2303 else 2304 #endif 2305 kl->l_cpuid = KI_NOCPU; 2306 } 2307 2308 /* 2309 * Fill in an eproc structure for the specified process. 2310 */ 2311 void 2312 fill_eproc(struct proc *p, struct eproc *ep) 2313 { 2314 struct tty *tp; 2315 struct lwp *l; 2316 2317 ep->e_paddr = p; 2318 ep->e_sess = p->p_session; 2319 ep->e_pcred = *p->p_cred; 2320 ep->e_ucred = *p->p_ucred; 2321 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2322 ep->e_vm.vm_rssize = 0; 2323 ep->e_vm.vm_tsize = 0; 2324 ep->e_vm.vm_dsize = 0; 2325 ep->e_vm.vm_ssize = 0; 2326 /* ep->e_vm.vm_pmap = XXX; */ 2327 } else { 2328 struct vmspace *vm = p->p_vmspace; 2329 2330 ep->e_vm.vm_rssize = vm_resident_count(vm); 2331 ep->e_vm.vm_tsize = vm->vm_tsize; 2332 ep->e_vm.vm_dsize = vm->vm_dsize; 2333 ep->e_vm.vm_ssize = vm->vm_ssize; 2334 2335 /* Pick a "representative" LWP */ 2336 l = proc_representative_lwp(p); 2337 2338 if (l->l_wmesg) 2339 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 2340 } 2341 if (p->p_pptr) 2342 ep->e_ppid = p->p_pptr->p_pid; 2343 else 2344 ep->e_ppid = 0; 2345 ep->e_pgid = p->p_pgrp->pg_id; 2346 ep->e_sid = ep->e_sess->s_sid; 2347 ep->e_jobc = p->p_pgrp->pg_jobc; 2348 if ((p->p_flag & P_CONTROLT) && 2349 (tp = ep->e_sess->s_ttyp)) { 2350 ep->e_tdev = tp->t_dev; 2351 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2352 ep->e_tsess = tp->t_session; 2353 } else 2354 ep->e_tdev = NODEV; 2355 2356 ep->e_xsize = ep->e_xrssize = 0; 2357 ep->e_xccount = ep->e_xswrss = 0; 2358 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 2359 if (SESS_LEADER(p)) 2360 ep->e_flag |= EPROC_SLEADER; 2361 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 2362 } 2363
Indexes created Mon Sep 22 13:09:51 GMT 2025