init_sysctl.c revision 1.1
1 /* $NetBSD: init_sysctl.c,v 1.1 2003/12/04 19:38:23 atatat 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 "pty.h" 41 #include "rnd.h" 42 43 #include <sys/types.h> 44 #include <sys/param.h> 45 #include <sys/sysctl.h> 46 #include <sys/errno.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/unistd.h> 50 #include <sys/disklabel.h> 51 #include <sys/rnd.h> 52 #include <sys/vnode.h> 53 #include <sys/mount.h> 54 #include <sys/namei.h> 55 #include <sys/msgbuf.h> 56 #include <dev/cons.h> 57 #include <sys/socketvar.h> 58 #include <sys/file.h> 59 #include <sys/tty.h> 60 #include <sys/malloc.h> 61 #include <sys/resource.h> 62 #include <sys/resourcevar.h> 63 #include <sys/exec.h> 64 #include <sys/conf.h> 65 #include <sys/device.h> 66 67 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 68 #include <sys/ipc.h> 69 #endif 70 #ifdef SYSVMSG 71 #include <sys/msg.h> 72 #endif 73 #ifdef SYSVSEM 74 #include <sys/sem.h> 75 #endif 76 #ifdef SYSVSHM 77 #include <sys/shm.h> 78 #endif 79 80 /* 81 * try over estimating by 5 procs/lwps 82 */ 83 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 84 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 85 86 /* 87 * convert pointer to 64 int for struct kinfo_proc2 88 */ 89 #define PTRTOINT64(foo) ((u_int64_t)(uintptr_t)(foo)) 90 91 #ifndef MULTIPROCESSOR 92 #define sysctl_ncpus() (1) 93 #else /* MULTIPROCESSOR */ 94 #ifndef CPU_INFO_FOREACH 95 #define CPU_INFO_ITERATOR int 96 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 97 #endif 98 static int 99 sysctl_ncpus(void) 100 { 101 struct cpu_info *ci; 102 CPU_INFO_ITERATOR cii; 103 104 int ncpus = 0; 105 for (CPU_INFO_FOREACH(cii, ci)) 106 ncpus++; 107 return (ncpus); 108 } 109 #endif /* MULTIPROCESSOR */ 110 111 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 112 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 113 static int sysctl_kern_securelevel(SYSCTLFN_PROTO); 114 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 115 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 116 static int sysctl_kern_file(SYSCTLFN_PROTO); 117 static int sysctl_kern_autonice(SYSCTLFN_PROTO); 118 static int sysctl_msgbuf(SYSCTLFN_PROTO); 119 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 120 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 121 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 122 static int sysctl_kern_sysvipc(SYSCTLFN_PROTO); 123 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 124 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 125 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 126 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 127 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 128 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 129 static int sysctl_kern_somaxkva(SYSCTLFN_PROTO); 130 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 131 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 132 static int sysctl_doeproc(SYSCTLFN_PROTO); 133 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 134 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 135 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 136 137 static void fill_kproc2(struct proc *, struct kinfo_proc2 *); 138 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 139 140 /* 141 * ******************************************************************** 142 * section 1: setup routines 143 * ******************************************************************** 144 * these functions are stuffed into a link set for sysctl setup 145 * functions. they're never called or referenced from anywhere else. 146 * ******************************************************************** 147 */ 148 149 /* 150 * sets up the base nodes... 151 */ 152 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 153 { 154 155 sysctl_createv(SYSCTL_PERMANENT, 156 CTLTYPE_NODE, "kern", NULL, 157 NULL, 0, NULL, 0, 158 CTL_KERN, CTL_EOL); 159 sysctl_createv(SYSCTL_PERMANENT, 160 CTLTYPE_NODE, "vm", NULL, 161 NULL, 0, NULL, 0, 162 CTL_VM, CTL_EOL); 163 sysctl_createv(SYSCTL_PERMANENT, 164 CTLTYPE_NODE, "vfs", NULL, 165 NULL, 0, NULL, 0, 166 CTL_VFS, CTL_EOL); 167 sysctl_createv(SYSCTL_PERMANENT, 168 CTLTYPE_NODE, "net", NULL, 169 NULL, 0, NULL, 0, 170 CTL_NET, CTL_EOL); 171 sysctl_createv(SYSCTL_PERMANENT, 172 CTLTYPE_NODE, "debug", NULL, 173 NULL, 0, NULL, 0, 174 CTL_DEBUG, CTL_EOL); 175 sysctl_createv(SYSCTL_PERMANENT, 176 CTLTYPE_NODE, "hw", NULL, 177 NULL, 0, NULL, 0, 178 CTL_HW, CTL_EOL); 179 sysctl_createv(SYSCTL_PERMANENT, 180 CTLTYPE_NODE, "machdep", NULL, 181 NULL, 0, NULL, 0, 182 CTL_MACHDEP, CTL_EOL); 183 /* 184 * this node is inserted so that the sysctl nodes in libc can 185 * operate. 186 */ 187 sysctl_createv(SYSCTL_PERMANENT, 188 CTLTYPE_NODE, "user", NULL, 189 NULL, 0, NULL, 0, 190 CTL_USER, CTL_EOL); 191 sysctl_createv(SYSCTL_PERMANENT, 192 CTLTYPE_NODE, "ddb", NULL, 193 NULL, 0, NULL, 0, 194 CTL_DDB, CTL_EOL); 195 sysctl_createv(SYSCTL_PERMANENT, 196 CTLTYPE_NODE, "proc", NULL, 197 NULL, 0, NULL, 0, 198 CTL_PROC, CTL_EOL); 199 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 200 CTLTYPE_NODE, "vendor", NULL, 201 NULL, 0, NULL, 0, 202 CTL_VENDOR, CTL_EOL); 203 sysctl_createv(SYSCTL_PERMANENT, 204 CTLTYPE_NODE, "emul", NULL, 205 NULL, 0, NULL, 0, 206 CTL_EMUL, CTL_EOL); 207 } 208 209 /* 210 * this setup routine is a replacement for kern_sysctl() 211 */ 212 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 213 { 214 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 215 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 216 extern int dumponpanic; /* defined in kern/subr_prf.c */ 217 218 sysctl_createv(SYSCTL_PERMANENT, 219 CTLTYPE_NODE, "kern", NULL, 220 NULL, 0, NULL, 0, 221 CTL_KERN, CTL_EOL); 222 223 sysctl_createv(SYSCTL_PERMANENT, 224 CTLTYPE_STRING, "ostype", NULL, 225 NULL, 0, &ostype, 0, 226 CTL_KERN, KERN_OSTYPE, CTL_EOL); 227 sysctl_createv(SYSCTL_PERMANENT, 228 CTLTYPE_STRING, "osrelease", NULL, 229 NULL, 0, &osrelease, 0, 230 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 231 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 232 CTLTYPE_INT, "osrevision", NULL, 233 NULL, __NetBSD_Version__, NULL, 0, 234 CTL_KERN, KERN_OSREV, CTL_EOL); 235 sysctl_createv(SYSCTL_PERMANENT, 236 CTLTYPE_STRING, "version", NULL, 237 NULL, 0, &version, 0, 238 CTL_KERN, KERN_VERSION, CTL_EOL); 239 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 240 CTLTYPE_INT, "maxvnodes", NULL, 241 sysctl_kern_maxvnodes, 0, NULL, 0, 242 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 243 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 244 CTLTYPE_INT, "maxproc", NULL, 245 sysctl_kern_maxproc, 0, NULL, 0, 246 CTL_KERN, KERN_MAXPROC, CTL_EOL); 247 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 248 CTLTYPE_INT, "maxfiles", NULL, 249 NULL, 0, &maxfiles, 0, 250 CTL_KERN, KERN_MAXFILES, CTL_EOL); 251 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 252 CTLTYPE_INT, "argmax", NULL, 253 NULL, ARG_MAX, NULL, 0, 254 CTL_KERN, KERN_ARGMAX, CTL_EOL); 255 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 256 CTLTYPE_INT, "securelevel", NULL, 257 sysctl_kern_securelevel, 0, &securelevel, 0, 258 CTL_KERN, KERN_SECURELVL, CTL_EOL); 259 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 260 CTLTYPE_STRING, "hostname", NULL, 261 NULL, 0, &hostname, MAXHOSTNAMELEN, 262 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 263 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 264 CTLTYPE_INT, "hostid", NULL, 265 sysctl_kern_hostid, 0, NULL, 0, 266 CTL_KERN, KERN_HOSTID, CTL_EOL); 267 sysctl_createv(SYSCTL_PERMANENT, 268 CTLTYPE_STRUCT, "clockrate", NULL, 269 sysctl_kern_clockrate, 0, NULL, 270 sizeof(struct clockinfo), 271 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 272 sysctl_createv(SYSCTL_PERMANENT, 273 CTLTYPE_STRUCT, "vnode", NULL, 274 sysctl_kern_vnode, 0, NULL, 0, 275 CTL_KERN, KERN_VNODE, CTL_EOL); 276 sysctl_createv(SYSCTL_PERMANENT, 277 CTLTYPE_STRUCT, "file", NULL, 278 sysctl_kern_file, 0, NULL, 0, 279 CTL_KERN, KERN_FILE, CTL_EOL); 280 #ifndef GPROF 281 sysctl_createv(SYSCTL_PERMANENT, 282 CTLTYPE_NODE, "profiling", NULL, 283 sysctl_notavail, 0, NULL, 0, 284 CTL_KERN, KERN_PROF, CTL_EOL); 285 #endif 286 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 287 CTLTYPE_INT, "posix1version", NULL, 288 NULL, _POSIX_VERSION, NULL, 0, 289 CTL_KERN, KERN_POSIX1, CTL_EOL); 290 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 291 CTLTYPE_INT, "ngroups", NULL, 292 NULL, NGROUPS_MAX, NULL, 0, 293 CTL_KERN, KERN_NGROUPS, CTL_EOL); 294 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 295 CTLTYPE_INT, "job_control", NULL, 296 NULL, 1, NULL, 0, 297 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 298 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 299 CTLTYPE_INT, "saved_ids", NULL, NULL, 300 #ifdef _POSIX_SAVED_IDS 301 1, 302 #else /* _POSIX_SAVED_IDS */ 303 0, 304 #endif /* _POSIX_SAVED_IDS */ 305 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 306 sysctl_createv(SYSCTL_PERMANENT, 307 CTLTYPE_STRUCT, "boottime", NULL, 308 NULL, 0, &boottime, sizeof(boottime), 309 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 310 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 311 CTLTYPE_STRING, "domainname", NULL, 312 NULL, 0, &domainname, MAXHOSTNAMELEN, 313 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 314 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 315 CTLTYPE_INT, "maxpartitions", NULL, 316 NULL, MAXPARTITIONS, NULL, 0, 317 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 318 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 319 CTLTYPE_INT, "rawpartition", NULL, 320 NULL, RAW_PART, NULL, 0, 321 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 322 sysctl_createv(SYSCTL_PERMANENT, 323 CTLTYPE_STRUCT, "timex", NULL, 324 sysctl_notavail, 0, NULL, 0, 325 CTL_KERN, KERN_TIMEX, CTL_EOL); 326 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 327 CTLTYPE_INT, "autonicetime", NULL, 328 sysctl_kern_autonice, 0, &autonicetime, 0, 329 CTL_KERN, KERN_AUTONICETIME, CTL_EOL); 330 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 331 CTLTYPE_INT, "autoniceval", NULL, 332 sysctl_kern_autonice, 0, &autoniceval, 0, 333 CTL_KERN, KERN_AUTONICEVAL, CTL_EOL); 334 sysctl_createv(SYSCTL_PERMANENT, 335 CTLTYPE_INT, "rtc_offset", NULL, 336 NULL, 0, &rtc_offset, 0, 337 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 338 sysctl_createv(SYSCTL_PERMANENT, 339 CTLTYPE_STRING, "root_device", NULL, 340 sysctl_root_device, 0, NULL, 0, 341 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 342 sysctl_createv(SYSCTL_PERMANENT, 343 CTLTYPE_INT, "msgbufsize", NULL, 344 sysctl_msgbuf, 0, &msgbufp->msg_bufs, 0, 345 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 346 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 347 CTLTYPE_INT, "fsync", NULL, 348 NULL, 1, NULL, 0, 349 CTL_KERN, KERN_FSYNC, CTL_EOL); 350 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 351 CTLTYPE_INT, "sysvmsg", NULL, NULL, 352 #ifdef SYSVMSG 353 1, 354 #else /* SYSVMSG */ 355 0, 356 #endif /* SYSVMSG */ 357 NULL, 0, CTL_KERN, KERN_SYSVMSG, CTL_EOL); 358 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 359 CTLTYPE_INT, "sysvsem", NULL, NULL, 360 #ifdef SYSVSEM 361 1, 362 #else /* SYSVSEM */ 363 0, 364 #endif /* SYSVSEM */ 365 NULL, 0, CTL_KERN, KERN_SYSVSEM, CTL_EOL); 366 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 367 CTLTYPE_INT, "sysvshm", NULL, NULL, 368 #ifdef SYSVSHM 369 1, 370 #else /* SYSVSHM */ 371 0, 372 #endif /* SYSVSHM */ 373 NULL, 0, CTL_KERN, KERN_SYSVSHM, CTL_EOL); 374 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 375 CTLTYPE_INT, "synchronized_io", NULL, 376 NULL, 1, NULL, 0, 377 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 378 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 379 CTLTYPE_INT, "iov_max", NULL, 380 NULL, IOV_MAX, NULL, 0, 381 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 382 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 383 CTLTYPE_INT, "mapped_files", NULL, 384 NULL, 1, NULL, 0, 385 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 386 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 387 CTLTYPE_INT, "memlock", NULL, 388 NULL, 1, NULL, 0, 389 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 390 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 391 CTLTYPE_INT, "memlock_range", NULL, 392 NULL, 1, NULL, 0, 393 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 394 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 395 CTLTYPE_INT, "memory_protection", NULL, 396 NULL, 1, NULL, 0, 397 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 398 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 399 CTLTYPE_INT, "login_name_max", NULL, 400 NULL, LOGIN_NAME_MAX, NULL, 0, 401 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 402 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 403 CTLTYPE_STRING, "defcorename", NULL, 404 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 405 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 406 sysctl_createv(SYSCTL_PERMANENT, 407 CTLTYPE_INT, "logsigexit", NULL, 408 NULL, 0, &kern_logsigexit, 0, 409 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 410 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 411 CTLTYPE_INT, "fscale", NULL, 412 NULL, FSCALE, NULL, 0, 413 CTL_KERN, KERN_FSCALE, CTL_EOL); 414 sysctl_createv(SYSCTL_PERMANENT, 415 CTLTYPE_INT, "ccpu", NULL, 416 NULL, 0, &ccpu, 0, 417 CTL_KERN, KERN_CCPU, CTL_EOL); 418 sysctl_createv(SYSCTL_PERMANENT, 419 CTLTYPE_STRUCT, "cp_time", NULL, 420 sysctl_kern_cptime, 0, NULL, 0, 421 CTL_KERN, KERN_CP_TIME, CTL_EOL); 422 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 423 sysctl_createv(SYSCTL_PERMANENT, 424 CTLTYPE_STRUCT, "sysvipc_info", NULL, 425 sysctl_kern_sysvipc, 0, NULL, 0, 426 CTL_KERN, KERN_SYSVIPC_INFO, CTL_EOL); 427 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 428 sysctl_createv(SYSCTL_PERMANENT, 429 CTLTYPE_INT, "msgbuf", NULL, 430 sysctl_msgbuf, 0, NULL, 0, 431 CTL_KERN, KERN_MSGBUF, CTL_EOL); 432 sysctl_createv(SYSCTL_PERMANENT, 433 CTLTYPE_STRUCT, "consdev", NULL, 434 sysctl_consdev, 0, NULL, sizeof(dev_t), 435 CTL_KERN, KERN_CONSDEV, CTL_EOL); 436 #if NPTY > 0 437 sysctl_createv(SYSCTL_PERMANENT, 438 CTLTYPE_INT, "maxptys", NULL, 439 sysctl_kern_maxptys, 0, NULL, 0, 440 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 441 #endif /* NPTY > 0 */ 442 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 443 CTLTYPE_INT, "maxphys", NULL, 444 NULL, MAXPHYS, NULL, 0, 445 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 446 sysctl_createv(SYSCTL_PERMANENT, 447 CTLTYPE_INT, "sbmax", NULL, 448 sysctl_kern_sbmax, 0, NULL, 0, 449 CTL_KERN, KERN_SBMAX, CTL_EOL); 450 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 451 CTLTYPE_INT, "monotonic_clock", NULL, 452 /* XXX _POSIX_VERSION */ 453 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 454 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 455 sysctl_createv(SYSCTL_PERMANENT, 456 CTLTYPE_INT, "urandom", NULL, 457 sysctl_kern_urnd, 0, NULL, 0, 458 CTL_KERN, KERN_URND, CTL_EOL); 459 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 460 CTLTYPE_INT, "labelsector", NULL, 461 NULL, LABELSECTOR, NULL, 0, 462 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 463 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 464 CTLTYPE_INT, "labeloffset", NULL, 465 NULL, LABELOFFSET, NULL, 0, 466 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 467 sysctl_createv(SYSCTL_PERMANENT, 468 CTLTYPE_NODE, "lwp", NULL, 469 sysctl_kern_lwp, 0, NULL, 0, 470 CTL_KERN, KERN_LWP, CTL_EOL); 471 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 472 CTLTYPE_INT, "forkfsleep", NULL, 473 sysctl_kern_forkfsleep, 0, NULL, 0, 474 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 475 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 476 CTLTYPE_INT, "posix_threads", NULL, 477 /* XXX _POSIX_VERSION */ 478 NULL, _POSIX_THREADS, NULL, 0, 479 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 480 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 481 CTLTYPE_INT, "posix_semaphores", NULL, NULL, 482 #ifdef P1003_1B_SEMAPHORE 483 200112, 484 #else /* P1003_1B_SEMAPHORE */ 485 0, 486 #endif /* P1003_1B_SEMAPHORE */ 487 NULL, 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 488 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 489 CTLTYPE_INT, "posix_barriers", NULL, 490 /* XXX _POSIX_VERSION */ 491 NULL, _POSIX_BARRIERS, NULL, 0, 492 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 493 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 494 CTLTYPE_INT, "posix_timers", NULL, 495 /* XXX _POSIX_VERSION */ 496 NULL, _POSIX_TIMERS, NULL, 0, 497 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 498 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 499 CTLTYPE_INT, "posix_spin_locks", NULL, 500 /* XXX _POSIX_VERSION */ 501 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 502 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 503 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 504 CTLTYPE_INT, "posix_reader_writer_locks", NULL, 505 /* XXX _POSIX_VERSION */ 506 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 507 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 508 sysctl_createv(SYSCTL_PERMANENT, 509 CTLTYPE_INT, "dump_on_panic", NULL, 510 NULL, 0, &dumponpanic, 0, 511 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 512 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 513 CTLTYPE_INT, "somaxkva", NULL, 514 sysctl_kern_somaxkva, 0, NULL, 0, 515 CTL_KERN, KERN_SOMAXKVA, CTL_EOL); 516 sysctl_createv(SYSCTL_PERMANENT, 517 CTLTYPE_INT, "root_partition", NULL, 518 sysctl_kern_root_partition, 0, NULL, 0, 519 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 520 sysctl_createv(SYSCTL_PERMANENT, 521 CTLTYPE_STRUCT, "drivers", NULL, 522 sysctl_kern_drivers, 0, NULL, 0, 523 CTL_KERN, KERN_DRIVERS, CTL_EOL); 524 } 525 526 SYSCTL_SETUP(sysctl_kern_proc_setup, 527 "sysctl kern.proc/proc2/proc_args subtree setup") 528 { 529 530 sysctl_createv(SYSCTL_PERMANENT, 531 CTLTYPE_NODE, "kern", NULL, 532 NULL, 0, NULL, 0, 533 CTL_KERN, CTL_EOL); 534 535 sysctl_createv(SYSCTL_PERMANENT, 536 CTLTYPE_NODE, "proc", NULL, 537 sysctl_doeproc, 0, NULL, 0, 538 CTL_KERN, KERN_PROC, CTL_EOL); 539 sysctl_createv(SYSCTL_PERMANENT, 540 CTLTYPE_NODE, "proc2", NULL, 541 sysctl_doeproc, 0, NULL, 0, 542 CTL_KERN, KERN_PROC2, CTL_EOL); 543 sysctl_createv(SYSCTL_PERMANENT, 544 CTLTYPE_NODE, "proc_args", NULL, 545 sysctl_kern_proc_args, 0, NULL, 0, 546 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 547 548 /* 549 "nodes" under these: 550 551 KERN_PROC_ALL 552 KERN_PROC_PID pid 553 KERN_PROC_PGRP pgrp 554 KERN_PROC_SESSION sess 555 KERN_PROC_TTY tty 556 KERN_PROC_UID uid 557 KERN_PROC_RUID uid 558 KERN_PROC_GID gid 559 KERN_PROC_RGID gid 560 561 all in all, probably not worth the effort... 562 */ 563 } 564 565 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 566 { 567 u_int u; 568 u_quad_t q; 569 570 sysctl_createv(SYSCTL_PERMANENT, 571 CTLTYPE_NODE, "hw", NULL, 572 NULL, 0, NULL, 0, 573 CTL_HW, CTL_EOL); 574 575 sysctl_createv(SYSCTL_PERMANENT, 576 CTLTYPE_STRING, "machine", NULL, 577 NULL, 0, machine, 0, 578 CTL_HW, HW_MACHINE, CTL_EOL); 579 sysctl_createv(SYSCTL_PERMANENT, 580 CTLTYPE_STRING, "model", NULL, 581 NULL, 0, cpu_model, 0, 582 CTL_HW, HW_MODEL, CTL_EOL); 583 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 584 CTLTYPE_INT, "ncpu", NULL, 585 NULL, sysctl_ncpus(), NULL, 0, 586 CTL_HW, HW_NCPU, CTL_EOL); 587 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 588 CTLTYPE_INT, "byteorder", NULL, 589 NULL, BYTE_ORDER, NULL, 0, 590 CTL_HW, HW_BYTEORDER, CTL_EOL); 591 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 592 UINT_MAX : physmem * PAGE_SIZE; 593 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 594 CTLTYPE_INT, "physmem", NULL, 595 NULL, u, NULL, 0, 596 CTL_HW, HW_PHYSMEM, CTL_EOL); 597 sysctl_createv(SYSCTL_PERMANENT, 598 CTLTYPE_INT, "usermem", NULL, 599 sysctl_hw_usermem, 0, NULL, 0, 600 CTL_HW, HW_USERMEM, CTL_EOL); 601 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 602 CTLTYPE_INT, "pagesize", NULL, 603 NULL, PAGE_SIZE, NULL, 0, 604 CTL_HW, HW_PAGESIZE, CTL_EOL); 605 sysctl_createv(SYSCTL_PERMANENT, 606 CTLTYPE_STRING, "disknames", NULL, 607 sysctl_hw_disknames, 0, NULL, 0, 608 CTL_HW, HW_DISKNAMES, CTL_EOL); 609 sysctl_createv(SYSCTL_PERMANENT, 610 CTLTYPE_STRUCT, "diskstats", NULL, 611 sysctl_hw_diskstats, 0, NULL, 0, 612 CTL_HW, HW_DISKSTATS, CTL_EOL); 613 sysctl_createv(SYSCTL_PERMANENT, 614 CTLTYPE_STRING, "machine_arch", NULL, 615 NULL, 0, machine_arch, 0, 616 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 617 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 618 CTLTYPE_INT, "alignbytes", NULL, 619 NULL, ALIGNBYTES, NULL, 0, 620 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 621 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE|SYSCTL_HEX, 622 CTLTYPE_STRING, "cnmagic", NULL, 623 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 624 CTL_HW, HW_CNMAGIC, CTL_EOL); 625 q = (u_quad_t)physmem * PAGE_SIZE; 626 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 627 CTLTYPE_QUAD, "physmem64", NULL, 628 NULL, q, NULL, 0, 629 CTL_HW, HW_PHYSMEM64, CTL_EOL); 630 sysctl_createv(SYSCTL_PERMANENT, 631 CTLTYPE_QUAD, "usermem64", NULL, 632 sysctl_hw_usermem, 0, NULL, 0, 633 CTL_HW, HW_USERMEM64, CTL_EOL); 634 } 635 636 #ifdef DEBUG 637 /* 638 * Debugging related system variables. 639 */ 640 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 641 struct ctldebug debug5, debug6, debug7, debug8, debug9; 642 struct ctldebug debug10, debug11, debug12, debug13, debug14; 643 struct ctldebug debug15, debug16, debug17, debug18, debug19; 644 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 645 &debug0, &debug1, &debug2, &debug3, &debug4, 646 &debug5, &debug6, &debug7, &debug8, &debug9, 647 &debug10, &debug11, &debug12, &debug13, &debug14, 648 &debug15, &debug16, &debug17, &debug18, &debug19, 649 }; 650 651 /* 652 * this setup routine is a replacement for debug_sysctl() 653 * 654 * note that it creates several nodes per defined debug variable 655 */ 656 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 657 { 658 struct ctldebug *cdp; 659 char nodename[20]; 660 int i; 661 662 /* 663 * two ways here: 664 * 665 * the "old" way (debug.name -> value) which was emulated by 666 * the sysctl(8) binary 667 * 668 * the new way, which the sysctl(8) binary was actually using 669 670 node debug 671 node debug.0 672 string debug.0.name 673 int debug.0.value 674 int debug.name 675 676 */ 677 678 sysctl_createv(SYSCTL_PERMANENT, 679 CTLTYPE_NODE, "debug", NULL, 680 NULL, 0, NULL, 0, 681 CTL_DEBUG, CTL_EOL); 682 683 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 684 cdp = debugvars[i]; 685 if (cdp->debugname == NULL || cdp->debugvar == NULL) 686 continue; 687 688 snprintf(nodename, sizeof(nodename), "debug%d", i); 689 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 690 CTLTYPE_NODE, nodename, NULL, 691 NULL, 0, NULL, 0, 692 CTL_DEBUG, i, CTL_EOL); 693 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 694 CTLTYPE_STRING, "name", NULL, 695 NULL, 0, cdp->debugname, 0, 696 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 697 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 698 CTLTYPE_INT, "value", NULL, 699 NULL, 0, cdp->debugvar, 0, 700 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 701 sysctl_createv(SYSCTL_PERMANENT, 702 CTLTYPE_INT, cdp->debugname, NULL, 703 NULL, 0, cdp->debugvar, 0, 704 CTL_DEBUG, CTL_CREATE, CTL_EOL); 705 } 706 } 707 #endif /* DEBUG */ 708 709 /* 710 * ******************************************************************** 711 * section 2: private node-specific helper routines. 712 * ******************************************************************** 713 */ 714 715 /* 716 * sysctl helper routine for kern.maxvnodes. handles ensuring that 717 * new values never falls below desiredvnodes and then calls reinit 718 * routines that needs to adjust to the new value. 719 */ 720 static int 721 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 722 { 723 int error, new_vnodes; 724 struct sysctlnode node; 725 726 new_vnodes = desiredvnodes; 727 node = *rnode; 728 node.sysctl_data = &new_vnodes; 729 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 730 if (error || newp == NULL) 731 return (error); 732 733 if (new_vnodes < desiredvnodes) 734 return (EINVAL); 735 desiredvnodes = new_vnodes; 736 vfs_reinit(); 737 nchreinit(); 738 739 return (0); 740 } 741 742 /* 743 * sysctl helper routine for kern.maxvnodes. ensures that the new 744 * values are not too low or too high. 745 */ 746 static int 747 sysctl_kern_maxproc(SYSCTLFN_ARGS) 748 { 749 int error, nmaxproc; 750 struct sysctlnode node; 751 752 nmaxproc = maxproc; 753 node = *rnode; 754 node.sysctl_data = &nmaxproc; 755 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 756 if (error || newp == NULL) 757 return (error); 758 759 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 760 return (EINVAL); 761 #ifdef __HAVE_CPU_MAXPROC 762 if (nmaxproc > cpu_maxproc()) 763 return (EINVAL); 764 #endif 765 maxproc = nmaxproc; 766 767 return (0); 768 } 769 770 /* 771 * sysctl helper routine for kern.securelevel. ensures that the value 772 * only rises unless the caller has pid 1 (assumed to be init). 773 */ 774 static int 775 sysctl_kern_securelevel(SYSCTLFN_ARGS) 776 { 777 int newsecurelevel, error; 778 struct sysctlnode node; 779 780 newsecurelevel = securelevel; 781 node = *rnode; 782 node.sysctl_data = &newsecurelevel; 783 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 784 if (error || newp == NULL) 785 return (error); 786 787 if (newsecurelevel < securelevel && l->l_proc->p_pid != 1) 788 return (EPERM); 789 securelevel = newsecurelevel; 790 791 return (error); 792 } 793 794 /* 795 * sysctl helper function for kern.hostid. the hostid is a long, but 796 * we export it as an int, so we need to give it a little help. 797 */ 798 static int 799 sysctl_kern_hostid(SYSCTLFN_ARGS) 800 { 801 int error, inthostid; 802 struct sysctlnode node; 803 804 inthostid = hostid; /* XXX assumes sizeof int >= sizeof long */ 805 node = *rnode; 806 node.sysctl_data = &inthostid; 807 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 808 if (error || newp == NULL) 809 return (error); 810 811 hostid = inthostid; 812 813 return (0); 814 } 815 816 /* 817 * sysctl helper routine for kern.clockrate. assembles a struct on 818 * the fly to be returned to the caller. 819 */ 820 static int 821 sysctl_kern_clockrate(SYSCTLFN_ARGS) 822 { 823 struct clockinfo clkinfo; 824 struct sysctlnode node; 825 826 clkinfo.tick = tick; 827 clkinfo.tickadj = tickadj; 828 clkinfo.hz = hz; 829 clkinfo.profhz = profhz; 830 clkinfo.stathz = stathz ? stathz : hz; 831 832 node = *rnode; 833 node.sysctl_data = &clkinfo; 834 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 835 } 836 837 838 /* 839 * sysctl helper routine for kern.file pseudo-subtree. 840 */ 841 static int 842 sysctl_kern_file(SYSCTLFN_ARGS) 843 { 844 int error; 845 size_t buflen; 846 struct file *fp; 847 char *start, *where; 848 849 start = where = oldp; 850 buflen = *oldlenp; 851 if (where == NULL) { 852 /* 853 * overestimate by 10 files 854 */ 855 *oldlenp = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 856 return (0); 857 } 858 859 /* 860 * first copyout filehead 861 */ 862 if (buflen < sizeof(filehead)) { 863 *oldlenp = 0; 864 return (0); 865 } 866 error = copyout(&filehead, where, sizeof(filehead)); 867 if (error) 868 return (error); 869 buflen -= sizeof(filehead); 870 where += sizeof(filehead); 871 872 /* 873 * followed by an array of file structures 874 */ 875 LIST_FOREACH(fp, &filehead, f_list) { 876 if (buflen < sizeof(struct file)) { 877 *oldlenp = where - start; 878 return (ENOMEM); 879 } 880 error = copyout(fp, where, sizeof(struct file)); 881 if (error) 882 return (error); 883 buflen -= sizeof(struct file); 884 where += sizeof(struct file); 885 } 886 *oldlenp = where - start; 887 return (0); 888 } 889 890 /* 891 * sysctl helper routine for kern.autonicetime and kern.autoniceval. 892 * asserts that the assigned value is in the correct range. 893 */ 894 static int 895 sysctl_kern_autonice(SYSCTLFN_ARGS) 896 { 897 int error, t = 0; 898 struct sysctlnode node; 899 900 node = *rnode; 901 t = *(int*)node.sysctl_data; 902 node.sysctl_data = &t; 903 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 904 if (error || newp == NULL) 905 return (error); 906 907 switch (node.sysctl_num) { 908 case KERN_AUTONICETIME: 909 if (t >= 0) 910 autonicetime = t; 911 break; 912 case KERN_AUTONICEVAL: 913 if (t < PRIO_MIN) 914 t = PRIO_MIN; 915 else if (t > PRIO_MAX) 916 t = PRIO_MAX; 917 autoniceval = t; 918 break; 919 } 920 921 return (0); 922 } 923 924 /* 925 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. for the 926 * former it merely checks the the message buffer is set up. for the 927 * latter, it also copies out the data if necessary. 928 */ 929 static int 930 sysctl_msgbuf(SYSCTLFN_ARGS) 931 { 932 char *where = oldp; 933 size_t len, maxlen; 934 long beg, end; 935 int error; 936 937 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 938 msgbufenabled = 0; 939 return (ENXIO); 940 } 941 942 switch (rnode->sysctl_num) { 943 case KERN_MSGBUFSIZE: 944 return (sysctl_lookup(SYSCTLFN_CALL(rnode))); 945 case KERN_MSGBUF: 946 break; 947 default: 948 return (EOPNOTSUPP); 949 } 950 951 if (newp != NULL) 952 return (EPERM); 953 954 if (oldp == NULL) { 955 /* always return full buffer size */ 956 *oldlenp = msgbufp->msg_bufs; 957 return (0); 958 } 959 960 error = 0; 961 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 962 963 /* 964 * First, copy from the write pointer to the end of 965 * message buffer. 966 */ 967 beg = msgbufp->msg_bufx; 968 end = msgbufp->msg_bufs; 969 while (maxlen > 0) { 970 len = MIN(end - beg, maxlen); 971 if (len == 0) 972 break; 973 error = copyout(&msgbufp->msg_bufc[beg], where, len); 974 if (error) 975 break; 976 where += len; 977 maxlen -= len; 978 979 /* 980 * ... then, copy from the beginning of message buffer to 981 * the write pointer. 982 */ 983 beg = 0; 984 end = msgbufp->msg_bufx; 985 } 986 987 return (error); 988 } 989 990 /* 991 * sysctl helper routine for kern.defcorename. in the case of a new 992 * string being assigned, check that it's not a zero-length string. 993 * (XXX the check in -current doesn't work, but do we really care?) 994 */ 995 static int 996 sysctl_kern_defcorename(SYSCTLFN_ARGS) 997 { 998 int error; 999 char newcorename[MAXPATHLEN]; 1000 struct sysctlnode node; 1001 1002 node = *rnode; 1003 node.sysctl_data = &newcorename[0]; 1004 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1005 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1006 if (error || newp == NULL) 1007 return (error); 1008 1009 /* 1010 * when sysctl_lookup() deals with a string, it's guaranteed 1011 * to come back nul terminated. so there. :) 1012 */ 1013 if (strlen(newcorename) == 0) 1014 return (EINVAL); 1015 1016 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1017 1018 return (0); 1019 } 1020 1021 /* 1022 * sysctl helper routine for kern.cp_time node. adds up cpu time 1023 * across all cpus. 1024 */ 1025 static int 1026 sysctl_kern_cptime(SYSCTLFN_ARGS) 1027 { 1028 struct sysctlnode node = *rnode; 1029 u_int64_t *cp_time = NULL; 1030 int error; 1031 1032 #ifdef MULTIPROCESSOR 1033 int n = sysctl_ncpus(), i; 1034 struct cpu_info *ci; 1035 CPU_INFO_ITERATOR cii; 1036 1037 /* 1038 * if you specifically pass a buffer that is the size of the 1039 * sum, or if you are probing for the size, you get the "sum" 1040 * of cp_time (and the size thereof) across all processors. 1041 * 1042 * alternately, you can pass an additional mib number and get 1043 * cp_time for that particular processor. 1044 */ 1045 switch (namelen) { 1046 case 0: 1047 if (*oldlenp == sizeof(*cp_time) * CPUSTATES || oldp == NULL) { 1048 node.sysctl_size = sizeof(cp_time) * CPUSTATES; 1049 cp_time = malloc(node.sysctl_size, 1050 M_TEMP, M_WAITOK|M_CANFAIL); 1051 n = -1; /* SUM */ 1052 } 1053 else { 1054 node.sysctl_size = n * sizeof(cp_time) * CPUSTATES; 1055 cp_time = malloc(node.sysctl_size, 1056 M_TEMP, M_WAITOK|M_CANFAIL); 1057 n = -2; /* ALL */ 1058 } 1059 break; 1060 case 1: 1061 if (name[0] < 0 || name[0] >= n) 1062 return (EINVAL); /* ENOSUCHPROCESSOR */ 1063 node.sysctl_size = sizeof(cp_time) * CPUSTATES; 1064 cp_time = malloc(node.sysctl_size, 1065 M_TEMP, M_WAITOK|M_CANFAIL); 1066 n = name[0]; 1067 /* 1068 * adjust these so that sysctl_lookup() will be happy 1069 */ 1070 name++; 1071 namelen--; 1072 default: 1073 return (EINVAL); 1074 } 1075 1076 if (cp_time == NULL) 1077 return (ENOMEM); 1078 node.sysctl_data = cp_time; 1079 memset(cp_time, 0, node.sysctl_size); 1080 1081 for (CPU_INFO_FOREACH(cii, ci)) { 1082 /* 1083 * doing a sum or doing just this processor 1084 */ 1085 if (n == -1 || n == 0) 1086 for (i = 0; i < CPUSTATES; i++) 1087 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1088 /* 1089 * if a specific processor was requested and we just 1090 * did it, we're done here 1091 */ 1092 if (n == 0) 1093 break; 1094 /* 1095 * if doing "all", skip to next cp_time set for next processor 1096 */ 1097 if (n == -2) 1098 cp_time += CPUSTATES; 1099 /* 1100 * if we're doing a specific processor, we're one 1101 * processor closer 1102 */ 1103 if (n > 0) 1104 n--; 1105 } 1106 1107 #else /* MULTIPROCESSOR */ 1108 if (namelen == 1 && name[0] == 0) { 1109 name++; 1110 namelen--; 1111 } 1112 node.sysctl_data = curcpu()->ci_schedstate.spc_cp_time; 1113 node.sysctl_size = sizeof(curcpu()->ci_schedstate.spc_cp_time); 1114 #endif /* MULTIPROCESSOR */ 1115 1116 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1117 if (cp_time != NULL) 1118 free(cp_time, M_TEMP); 1119 1120 return (error); 1121 } 1122 1123 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1124 /* 1125 * sysctl helper routine for kern.sysvipc_info subtree. 1126 */ 1127 1128 #define FILL_PERM(src, dst) do { \ 1129 (dst)._key = (src)._key; \ 1130 (dst).uid = (src).uid; \ 1131 (dst).gid = (src).gid; \ 1132 (dst).cuid = (src).cuid; \ 1133 (dst).cgid = (src).cgid; \ 1134 (dst).mode = (src).mode; \ 1135 (dst)._seq = (src)._seq; \ 1136 } while (/*CONSTCOND*/ 0); 1137 #define FILL_MSG(src, dst) do { \ 1138 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1139 (dst).msg_qnum = (src).msg_qnum; \ 1140 (dst).msg_qbytes = (src).msg_qbytes; \ 1141 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1142 (dst).msg_lspid = (src).msg_lspid; \ 1143 (dst).msg_lrpid = (src).msg_lrpid; \ 1144 (dst).msg_stime = (src).msg_stime; \ 1145 (dst).msg_rtime = (src).msg_rtime; \ 1146 (dst).msg_ctime = (src).msg_ctime; \ 1147 } while (/*CONSTCOND*/ 0) 1148 #define FILL_SEM(src, dst) do { \ 1149 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1150 (dst).sem_nsems = (src).sem_nsems; \ 1151 (dst).sem_otime = (src).sem_otime; \ 1152 (dst).sem_ctime = (src).sem_ctime; \ 1153 } while (/*CONSTCOND*/ 0) 1154 #define FILL_SHM(src, dst) do { \ 1155 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1156 (dst).shm_segsz = (src).shm_segsz; \ 1157 (dst).shm_lpid = (src).shm_lpid; \ 1158 (dst).shm_cpid = (src).shm_cpid; \ 1159 (dst).shm_atime = (src).shm_atime; \ 1160 (dst).shm_dtime = (src).shm_dtime; \ 1161 (dst).shm_ctime = (src).shm_ctime; \ 1162 (dst).shm_nattch = (src).shm_nattch; \ 1163 } while (/*CONSTCOND*/ 0) 1164 1165 static int 1166 sysctl_kern_sysvipc(SYSCTLFN_ARGS) 1167 { 1168 void *where = oldp; 1169 size_t *sizep = oldlenp; 1170 #ifdef SYSVMSG 1171 struct msg_sysctl_info *msgsi = NULL; 1172 #endif 1173 #ifdef SYSVSEM 1174 struct sem_sysctl_info *semsi = NULL; 1175 #endif 1176 #ifdef SYSVSHM 1177 struct shm_sysctl_info *shmsi = NULL; 1178 #endif 1179 size_t infosize, dssize, tsize, buflen; 1180 void *buf = NULL; 1181 char *start; 1182 int32_t nds; 1183 int i, error, ret; 1184 1185 if (namelen != 1) 1186 return (EINVAL); 1187 1188 start = where; 1189 buflen = *sizep; 1190 1191 switch (*name) { 1192 case KERN_SYSVIPC_MSG_INFO: 1193 #ifdef SYSVMSG 1194 infosize = sizeof(msgsi->msginfo); 1195 nds = msginfo.msgmni; 1196 dssize = sizeof(msgsi->msgids[0]); 1197 break; 1198 #else 1199 return (EINVAL); 1200 #endif 1201 case KERN_SYSVIPC_SEM_INFO: 1202 #ifdef SYSVSEM 1203 infosize = sizeof(semsi->seminfo); 1204 nds = seminfo.semmni; 1205 dssize = sizeof(semsi->semids[0]); 1206 break; 1207 #else 1208 return (EINVAL); 1209 #endif 1210 case KERN_SYSVIPC_SHM_INFO: 1211 #ifdef SYSVSHM 1212 infosize = sizeof(shmsi->shminfo); 1213 nds = shminfo.shmmni; 1214 dssize = sizeof(shmsi->shmids[0]); 1215 break; 1216 #else 1217 return (EINVAL); 1218 #endif 1219 default: 1220 return (EINVAL); 1221 } 1222 /* 1223 * Round infosize to 64 bit boundary if requesting more than just 1224 * the info structure or getting the total data size. 1225 */ 1226 if (where == NULL || *sizep > infosize) 1227 infosize = ((infosize + 7) / 8) * 8; 1228 tsize = infosize + nds * dssize; 1229 1230 /* Return just the total size required. */ 1231 if (where == NULL) { 1232 *sizep = tsize; 1233 return (0); 1234 } 1235 1236 /* Not enough room for even the info struct. */ 1237 if (buflen < infosize) { 1238 *sizep = 0; 1239 return (ENOMEM); 1240 } 1241 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1242 memset(buf, 0, min(tsize, buflen)); 1243 1244 switch (*name) { 1245 #ifdef SYSVMSG 1246 case KERN_SYSVIPC_MSG_INFO: 1247 msgsi = (struct msg_sysctl_info *)buf; 1248 msgsi->msginfo = msginfo; 1249 break; 1250 #endif 1251 #ifdef SYSVSEM 1252 case KERN_SYSVIPC_SEM_INFO: 1253 semsi = (struct sem_sysctl_info *)buf; 1254 semsi->seminfo = seminfo; 1255 break; 1256 #endif 1257 #ifdef SYSVSHM 1258 case KERN_SYSVIPC_SHM_INFO: 1259 shmsi = (struct shm_sysctl_info *)buf; 1260 shmsi->shminfo = shminfo; 1261 break; 1262 #endif 1263 } 1264 buflen -= infosize; 1265 1266 ret = 0; 1267 if (buflen > 0) { 1268 /* Fill in the IPC data structures. */ 1269 for (i = 0; i < nds; i++) { 1270 if (buflen < dssize) { 1271 ret = ENOMEM; 1272 break; 1273 } 1274 switch (*name) { 1275 #ifdef SYSVMSG 1276 case KERN_SYSVIPC_MSG_INFO: 1277 FILL_MSG(msqids[i], msgsi->msgids[i]); 1278 break; 1279 #endif 1280 #ifdef SYSVSEM 1281 case KERN_SYSVIPC_SEM_INFO: 1282 FILL_SEM(sema[i], semsi->semids[i]); 1283 break; 1284 #endif 1285 #ifdef SYSVSHM 1286 case KERN_SYSVIPC_SHM_INFO: 1287 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1288 break; 1289 #endif 1290 } 1291 buflen -= dssize; 1292 } 1293 } 1294 *sizep -= buflen; 1295 error = copyout(buf, start, *sizep); 1296 /* If copyout succeeded, use return code set earlier. */ 1297 if (error == 0) 1298 error = ret; 1299 if (buf) 1300 free(buf, M_TEMP); 1301 return (error); 1302 } 1303 1304 #undef FILL_PERM 1305 #undef FILL_MSG 1306 #undef FILL_SEM 1307 #undef FILL_SHM 1308 1309 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 1310 1311 #if NPTY > 0 1312 /* 1313 * sysctl helper routine for kern.maxptys. ensures that any new value 1314 * is acceptable to the pty subsystem. 1315 */ 1316 static int 1317 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1318 { 1319 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1320 int error, max; 1321 struct sysctlnode node; 1322 1323 /* get current value of maxptys */ 1324 max = pty_maxptys(0, 0); 1325 1326 node = *rnode; 1327 node.sysctl_data = &max; 1328 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1329 if (error || newp == NULL) 1330 return (error); 1331 1332 if (max != pty_maxptys(max, 1)) 1333 return (EINVAL); 1334 1335 return (0); 1336 } 1337 #endif /* NPTY > 0 */ 1338 1339 /* 1340 * sysctl helper routine for kern.sbmax. basically just ensures that 1341 * any new value is not too small. 1342 */ 1343 static int 1344 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1345 { 1346 int error, new_sbmax; 1347 struct sysctlnode node; 1348 1349 new_sbmax = sb_max; 1350 node = *rnode; 1351 node.sysctl_data = &new_sbmax; 1352 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1353 if (error || newp == NULL) 1354 return (error); 1355 1356 error = sb_max_set(new_sbmax); 1357 1358 return (error); 1359 } 1360 1361 /* 1362 * sysctl helper routine for kern.urandom node. picks a random number 1363 * for you. 1364 */ 1365 static int 1366 sysctl_kern_urnd(SYSCTLFN_ARGS) 1367 { 1368 #if NRND > 0 1369 int v; 1370 1371 if (rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY) == sizeof(v)) { 1372 struct sysctlnode node = *rnode; 1373 node.sysctl_data = &v; 1374 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1375 } 1376 else 1377 return (EIO); /*XXX*/ 1378 #else 1379 return (EOPNOTSUPP); 1380 #endif 1381 } 1382 1383 /* 1384 * sysctl helper routine to do kern.lwp.* work. 1385 */ 1386 static int 1387 sysctl_kern_lwp(SYSCTLFN_ARGS) 1388 { 1389 struct kinfo_lwp klwp; 1390 struct proc *p; 1391 struct lwp *l2; 1392 char *where, *dp; 1393 int pid, elem_size, elem_count; 1394 int buflen, needed, error; 1395 1396 dp = where = oldp; 1397 buflen = where != NULL ? *oldlenp : 0; 1398 error = needed = 0; 1399 1400 if (newp != NULL || namelen != 4) 1401 return (EINVAL); 1402 pid = name[1]; 1403 elem_size = name[2]; 1404 elem_count = name[3]; 1405 1406 p = pfind(pid); 1407 if (p == NULL) 1408 return (ESRCH); 1409 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1410 if (buflen >= elem_size && elem_count > 0) { 1411 fill_lwp(l2, &klwp); 1412 /* 1413 * Copy out elem_size, but not larger than 1414 * the size of a struct kinfo_proc2. 1415 */ 1416 error = copyout(&klwp, dp, 1417 min(sizeof(klwp), elem_size)); 1418 if (error) 1419 goto cleanup; 1420 dp += elem_size; 1421 buflen -= elem_size; 1422 elem_count--; 1423 } 1424 needed += elem_size; 1425 } 1426 1427 if (where != NULL) { 1428 *oldlenp = dp - where; 1429 if (needed > *oldlenp) 1430 return (ENOMEM); 1431 } else { 1432 needed += KERN_PROCSLOP; 1433 *oldlenp = needed; 1434 } 1435 return (0); 1436 cleanup: 1437 return (error); 1438 } 1439 1440 /* 1441 * sysctl helper routine for kern.forkfsleep node. ensures that the 1442 * given value is not too large or two small, and is at least one 1443 * timer tick if not zero. 1444 */ 1445 static int 1446 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1447 { 1448 /* userland sees value in ms, internally is in ticks */ 1449 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1450 int error, timo, lsleep; 1451 struct sysctlnode node; 1452 1453 lsleep = forkfsleep * 1000 / hz; 1454 node = *rnode; 1455 node.sysctl_data = &lsleep; 1456 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1457 if (error || newp == NULL) 1458 return (error); 1459 1460 /* refuse negative values, and overly 'long time' */ 1461 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1462 return (EINVAL); 1463 1464 timo = mstohz(lsleep); 1465 1466 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1467 if (lsleep != 0 && timo == 0) 1468 forkfsleep = 1; 1469 else 1470 forkfsleep = timo; 1471 1472 return (0); 1473 } 1474 1475 /* 1476 * sysctl helper routine for kern.somaxkva. ensures that the given 1477 * value is not too small. 1478 * (XXX should we maybe make sure it's not too large as well?) 1479 */ 1480 static int 1481 sysctl_kern_somaxkva(SYSCTLFN_ARGS) 1482 { 1483 int error, new_somaxkva; 1484 struct sysctlnode node; 1485 1486 new_somaxkva = somaxkva; 1487 node = *rnode; 1488 node.sysctl_data = &new_somaxkva; 1489 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1490 if (error || newp == NULL) 1491 return (error); 1492 1493 if (new_somaxkva < (16 * 1024 * 1024)) /* sanity */ 1494 return (EINVAL); 1495 somaxkva = new_somaxkva; 1496 1497 return (error); 1498 } 1499 1500 /* 1501 * sysctl helper routine for kern.root_partition 1502 */ 1503 static int 1504 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1505 { 1506 int rootpart = DISKPART(rootdev); 1507 struct sysctlnode node = *rnode; 1508 1509 node.sysctl_data = &rootpart; 1510 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1511 } 1512 1513 /* 1514 * sysctl helper function for kern.drivers 1515 */ 1516 static int 1517 sysctl_kern_drivers(SYSCTLFN_ARGS) 1518 { 1519 int error; 1520 size_t buflen; 1521 struct kinfo_drivers kd; 1522 char *start, *where; 1523 const char *dname; 1524 int i; 1525 extern struct devsw_conv *devsw_conv; 1526 extern int max_devsw_convs; 1527 1528 if (newp != NULL || namelen != 0) 1529 return (EINVAL); 1530 1531 start = where = oldp; 1532 buflen = *oldlenp; 1533 if (where == NULL) { 1534 *oldlenp = max_devsw_convs * sizeof kd; 1535 return 0; 1536 } 1537 1538 /* 1539 * An array of kinfo_drivers structures 1540 */ 1541 error = 0; 1542 for (i = 0; i < max_devsw_convs; i++) { 1543 dname = devsw_conv[i].d_name; 1544 if (dname == NULL) 1545 continue; 1546 if (buflen < sizeof kd) { 1547 error = ENOMEM; 1548 break; 1549 } 1550 kd.d_bmajor = devsw_conv[i].d_bmajor; 1551 kd.d_cmajor = devsw_conv[i].d_cmajor; 1552 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1553 error = copyout(&kd, where, sizeof kd); 1554 if (error != 0) 1555 break; 1556 buflen -= sizeof kd; 1557 where += sizeof kd; 1558 } 1559 *oldlenp = where - start; 1560 return error; 1561 } 1562 1563 static int 1564 sysctl_doeproc(SYSCTLFN_ARGS) 1565 { 1566 struct eproc eproc; 1567 struct kinfo_proc2 kproc2; 1568 struct kinfo_proc *dp; 1569 struct proc *p; 1570 const struct proclist_desc *pd; 1571 char *where, *dp2; 1572 int type, op, arg; 1573 u_int elem_size, elem_count; 1574 size_t buflen, needed; 1575 int error; 1576 1577 dp = oldp; 1578 dp2 = where = oldp; 1579 buflen = where != NULL ? *oldlenp : 0; 1580 error = 0; 1581 needed = 0; 1582 type = rnode->sysctl_num; 1583 1584 if (type == KERN_PROC) { 1585 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 1586 return (EINVAL); 1587 op = name[0]; 1588 if (op != KERN_PROC_ALL) 1589 arg = name[1]; 1590 else 1591 arg = 0; /* Quell compiler warning */ 1592 elem_size = elem_count = 0; /* Ditto */ 1593 } else { 1594 if (namelen != 4) 1595 return (EINVAL); 1596 op = name[0]; 1597 arg = name[1]; 1598 elem_size = name[2]; 1599 elem_count = name[3]; 1600 } 1601 1602 proclist_lock_read(); 1603 1604 pd = proclists; 1605 again: 1606 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1607 /* 1608 * Skip embryonic processes. 1609 */ 1610 if (p->p_stat == SIDL) 1611 continue; 1612 /* 1613 * TODO - make more efficient (see notes below). 1614 * do by session. 1615 */ 1616 switch (op) { 1617 1618 case KERN_PROC_PID: 1619 /* could do this with just a lookup */ 1620 if (p->p_pid != (pid_t)arg) 1621 continue; 1622 break; 1623 1624 case KERN_PROC_PGRP: 1625 /* could do this by traversing pgrp */ 1626 if (p->p_pgrp->pg_id != (pid_t)arg) 1627 continue; 1628 break; 1629 1630 case KERN_PROC_SESSION: 1631 if (p->p_session->s_sid != (pid_t)arg) 1632 continue; 1633 break; 1634 1635 case KERN_PROC_TTY: 1636 if (arg == (int) KERN_PROC_TTY_REVOKE) { 1637 if ((p->p_flag & P_CONTROLT) == 0 || 1638 p->p_session->s_ttyp == NULL || 1639 p->p_session->s_ttyvp != NULL) 1640 continue; 1641 } else if ((p->p_flag & P_CONTROLT) == 0 || 1642 p->p_session->s_ttyp == NULL) { 1643 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1644 continue; 1645 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1646 continue; 1647 break; 1648 1649 case KERN_PROC_UID: 1650 if (p->p_ucred->cr_uid != (uid_t)arg) 1651 continue; 1652 break; 1653 1654 case KERN_PROC_RUID: 1655 if (p->p_cred->p_ruid != (uid_t)arg) 1656 continue; 1657 break; 1658 1659 case KERN_PROC_GID: 1660 if (p->p_ucred->cr_gid != (uid_t)arg) 1661 continue; 1662 break; 1663 1664 case KERN_PROC_RGID: 1665 if (p->p_cred->p_rgid != (uid_t)arg) 1666 continue; 1667 break; 1668 1669 case KERN_PROC_ALL: 1670 /* allow everything */ 1671 break; 1672 1673 default: 1674 error = EINVAL; 1675 goto cleanup; 1676 } 1677 if (type == KERN_PROC) { 1678 if (buflen >= sizeof(struct kinfo_proc)) { 1679 fill_eproc(p, &eproc); 1680 error = copyout(p, &dp->kp_proc, 1681 sizeof(struct proc)); 1682 if (error) 1683 goto cleanup; 1684 error = copyout(&eproc, &dp->kp_eproc, 1685 sizeof(eproc)); 1686 if (error) 1687 goto cleanup; 1688 dp++; 1689 buflen -= sizeof(struct kinfo_proc); 1690 } 1691 needed += sizeof(struct kinfo_proc); 1692 } else { /* KERN_PROC2 */ 1693 if (buflen >= elem_size && elem_count > 0) { 1694 fill_kproc2(p, &kproc2); 1695 /* 1696 * Copy out elem_size, but not larger than 1697 * the size of a struct kinfo_proc2. 1698 */ 1699 error = copyout(&kproc2, dp2, 1700 min(sizeof(kproc2), elem_size)); 1701 if (error) 1702 goto cleanup; 1703 dp2 += elem_size; 1704 buflen -= elem_size; 1705 elem_count--; 1706 } 1707 needed += elem_size; 1708 } 1709 } 1710 pd++; 1711 if (pd->pd_list != NULL) 1712 goto again; 1713 proclist_unlock_read(); 1714 1715 if (where != NULL) { 1716 if (type == KERN_PROC) 1717 *oldlenp = (char *)dp - where; 1718 else 1719 *oldlenp = dp2 - where; 1720 if (needed > *oldlenp) 1721 return (ENOMEM); 1722 } else { 1723 needed += KERN_PROCSLOP; 1724 *oldlenp = needed; 1725 } 1726 return (0); 1727 cleanup: 1728 proclist_unlock_read(); 1729 return (error); 1730 } 1731 1732 /* 1733 * sysctl helper routine for kern.proc_args pseudo-subtree. 1734 */ 1735 static int 1736 sysctl_kern_proc_args(SYSCTLFN_ARGS) 1737 { 1738 struct ps_strings pss; 1739 struct proc *p, *up = l->l_proc; 1740 size_t len, upper_bound, xlen, i; 1741 struct uio auio; 1742 struct iovec aiov; 1743 vaddr_t argv; 1744 pid_t pid; 1745 int nargv, type, error; 1746 char *arg; 1747 char *tmp; 1748 1749 if (newp != NULL || namelen != 2) 1750 return (EINVAL); 1751 pid = name[0]; 1752 type = name[1]; 1753 1754 switch (type) { 1755 case KERN_PROC_ARGV: 1756 case KERN_PROC_NARGV: 1757 case KERN_PROC_ENV: 1758 case KERN_PROC_NENV: 1759 /* ok */ 1760 break; 1761 default: 1762 return (EINVAL); 1763 } 1764 1765 /* check pid */ 1766 if ((p = pfind(pid)) == NULL) 1767 return (EINVAL); 1768 1769 /* only root or same user change look at the environment */ 1770 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1771 if (up->p_ucred->cr_uid != 0) { 1772 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1773 up->p_cred->p_ruid != p->p_cred->p_svuid) 1774 return (EPERM); 1775 } 1776 } 1777 1778 if (oldp == NULL) { 1779 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1780 *oldlenp = sizeof (int); 1781 else 1782 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 1783 return (0); 1784 } 1785 1786 /* 1787 * Zombies don't have a stack, so we can't read their psstrings. 1788 * System processes also don't have a user stack. 1789 */ 1790 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1791 return (EINVAL); 1792 1793 /* 1794 * Lock the process down in memory. 1795 */ 1796 /* XXXCDC: how should locking work here? */ 1797 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1798 return (EFAULT); 1799 1800 p->p_vmspace->vm_refcnt++; /* XXX */ 1801 1802 /* 1803 * Allocate a temporary buffer to hold the arguments. 1804 */ 1805 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1806 1807 /* 1808 * Read in the ps_strings structure. 1809 */ 1810 aiov.iov_base = &pss; 1811 aiov.iov_len = sizeof(pss); 1812 auio.uio_iov = &aiov; 1813 auio.uio_iovcnt = 1; 1814 auio.uio_offset = (vaddr_t)p->p_psstr; 1815 auio.uio_resid = sizeof(pss); 1816 auio.uio_segflg = UIO_SYSSPACE; 1817 auio.uio_rw = UIO_READ; 1818 auio.uio_procp = NULL; 1819 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1820 if (error) 1821 goto done; 1822 1823 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1824 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1825 else 1826 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1827 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1828 error = copyout(&nargv, oldp, sizeof(nargv)); 1829 *oldlenp = sizeof(nargv); 1830 goto done; 1831 } 1832 /* 1833 * Now read the address of the argument vector. 1834 */ 1835 switch (type) { 1836 case KERN_PROC_ARGV: 1837 /* XXX compat32 stuff here */ 1838 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1839 break; 1840 case KERN_PROC_ENV: 1841 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1842 break; 1843 default: 1844 return (EINVAL); 1845 } 1846 auio.uio_offset = (off_t)(long)tmp; 1847 aiov.iov_base = &argv; 1848 aiov.iov_len = sizeof(argv); 1849 auio.uio_iov = &aiov; 1850 auio.uio_iovcnt = 1; 1851 auio.uio_resid = sizeof(argv); 1852 auio.uio_segflg = UIO_SYSSPACE; 1853 auio.uio_rw = UIO_READ; 1854 auio.uio_procp = NULL; 1855 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1856 if (error) 1857 goto done; 1858 1859 /* 1860 * Now copy in the actual argument vector, one page at a time, 1861 * since we don't know how long the vector is (though, we do 1862 * know how many NUL-terminated strings are in the vector). 1863 */ 1864 len = 0; 1865 upper_bound = *oldlenp; 1866 for (; nargv != 0 && len < upper_bound; len += xlen) { 1867 aiov.iov_base = arg; 1868 aiov.iov_len = PAGE_SIZE; 1869 auio.uio_iov = &aiov; 1870 auio.uio_iovcnt = 1; 1871 auio.uio_offset = argv + len; 1872 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1873 auio.uio_resid = xlen; 1874 auio.uio_segflg = UIO_SYSSPACE; 1875 auio.uio_rw = UIO_READ; 1876 auio.uio_procp = NULL; 1877 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1878 if (error) 1879 goto done; 1880 1881 for (i = 0; i < xlen && nargv != 0; i++) { 1882 if (arg[i] == '\0') 1883 nargv--; /* one full string */ 1884 } 1885 1886 /* 1887 * Make sure we don't copyout past the end of the user's 1888 * buffer. 1889 */ 1890 if (len + i > upper_bound) 1891 i = upper_bound - len; 1892 1893 error = copyout(arg, (char *)oldp + len, i); 1894 if (error) 1895 break; 1896 1897 if (nargv == 0) { 1898 len += i; 1899 break; 1900 } 1901 } 1902 *oldlenp = len; 1903 1904 done: 1905 uvmspace_free(p->p_vmspace); 1906 1907 free(arg, M_TEMP); 1908 return (error); 1909 } 1910 1911 /* 1912 * sysctl helper routine for hw.usermem and hw.usermem64. values are 1913 * calculate on the fly taking into account integer overflow and the 1914 * current wired count. 1915 */ 1916 static int 1917 sysctl_hw_usermem(SYSCTLFN_ARGS) 1918 { 1919 u_int ui; 1920 u_quad_t uq; 1921 struct sysctlnode node; 1922 1923 node = *rnode; 1924 switch (rnode->sysctl_num) { 1925 case HW_USERMEM: 1926 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1927 ui = UINT_MAX; 1928 else 1929 ui *= PAGE_SIZE; 1930 node.sysctl_data = &ui; 1931 break; 1932 case HW_USERMEM64: 1933 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1934 node.sysctl_data = &uq; 1935 break; 1936 default: 1937 return (EINVAL); 1938 } 1939 1940 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1941 } 1942 1943 /* 1944 * sysctl helper routine for kern.cnmagic node. pulls the old value 1945 * out, encoded, and stuffs the new value in for decoding. 1946 */ 1947 static int 1948 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 1949 { 1950 char magic[CNS_LEN]; 1951 int error; 1952 struct sysctlnode node; 1953 1954 if (oldp) 1955 cn_get_magic(magic, CNS_LEN); 1956 node = *rnode; 1957 node.sysctl_data = &magic[0]; 1958 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1959 if (error || newp == NULL) 1960 return (error); 1961 1962 return (cn_set_magic(magic)); 1963 } 1964 1965 /* 1966 * ******************************************************************** 1967 * section 3: public helper routines that are used for more than one 1968 * node 1969 * ******************************************************************** 1970 */ 1971 1972 /* 1973 * sysctl helper routine for the kern.root_device node and some ports' 1974 * machdep.root_device nodes. 1975 */ 1976 int 1977 sysctl_root_device(SYSCTLFN_ARGS) 1978 { 1979 struct sysctlnode node; 1980 1981 node = *rnode; 1982 node.sysctl_data = root_device->dv_xname; 1983 node.sysctl_size = strlen(root_device->dv_xname) + 1; 1984 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1985 } 1986 1987 /* 1988 * sysctl helper routine for kern.consdev, dependent on the current 1989 * state of the console. also used for machdep.console_device on some 1990 * ports. 1991 */ 1992 int 1993 sysctl_consdev(SYSCTLFN_ARGS) 1994 { 1995 dev_t consdev; 1996 struct sysctlnode node; 1997 1998 if (cn_tab != NULL) 1999 consdev = cn_tab->cn_dev; 2000 else 2001 consdev = NODEV; 2002 node = *rnode; 2003 node.sysctl_data = &consdev; 2004 node.sysctl_size = sizeof(consdev); 2005 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2006 } 2007 2008 /* 2009 * ******************************************************************** 2010 * section 4: support for some helpers 2011 * ******************************************************************** 2012 */ 2013 2014 /* 2015 * Fill in a kinfo_proc2 structure for the specified process. 2016 */ 2017 static void 2018 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 2019 { 2020 struct tty *tp; 2021 struct lwp *l; 2022 struct timeval ut, st; 2023 2024 memset(ki, 0, sizeof(*ki)); 2025 2026 ki->p_paddr = PTRTOINT64(p); 2027 ki->p_fd = PTRTOINT64(p->p_fd); 2028 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 2029 ki->p_stats = PTRTOINT64(p->p_stats); 2030 ki->p_limit = PTRTOINT64(p->p_limit); 2031 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 2032 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 2033 ki->p_sess = PTRTOINT64(p->p_session); 2034 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2035 ki->p_ru = PTRTOINT64(p->p_ru); 2036 2037 ki->p_eflag = 0; 2038 ki->p_exitsig = p->p_exitsig; 2039 ki->p_flag = p->p_flag; 2040 2041 ki->p_pid = p->p_pid; 2042 if (p->p_pptr) 2043 ki->p_ppid = p->p_pptr->p_pid; 2044 else 2045 ki->p_ppid = 0; 2046 ki->p_sid = p->p_session->s_sid; 2047 ki->p__pgid = p->p_pgrp->pg_id; 2048 2049 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2050 2051 ki->p_uid = p->p_ucred->cr_uid; 2052 ki->p_ruid = p->p_cred->p_ruid; 2053 ki->p_gid = p->p_ucred->cr_gid; 2054 ki->p_rgid = p->p_cred->p_rgid; 2055 ki->p_svuid = p->p_cred->p_svuid; 2056 ki->p_svgid = p->p_cred->p_svgid; 2057 2058 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 2059 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 2060 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 2061 2062 ki->p_jobc = p->p_pgrp->pg_jobc; 2063 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 2064 ki->p_tdev = tp->t_dev; 2065 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2066 ki->p_tsess = PTRTOINT64(tp->t_session); 2067 } else { 2068 ki->p_tdev = NODEV; 2069 } 2070 2071 ki->p_estcpu = p->p_estcpu; 2072 ki->p_rtime_sec = p->p_rtime.tv_sec; 2073 ki->p_rtime_usec = p->p_rtime.tv_usec; 2074 ki->p_cpticks = p->p_cpticks; 2075 ki->p_pctcpu = p->p_pctcpu; 2076 2077 ki->p_uticks = p->p_uticks; 2078 ki->p_sticks = p->p_sticks; 2079 ki->p_iticks = p->p_iticks; 2080 2081 ki->p_tracep = PTRTOINT64(p->p_tracep); 2082 ki->p_traceflag = p->p_traceflag; 2083 2084 2085 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 2086 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 2087 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2088 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2089 2090 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2091 ki->p_realstat = p->p_stat; 2092 ki->p_nice = p->p_nice; 2093 2094 ki->p_xstat = p->p_xstat; 2095 ki->p_acflag = p->p_acflag; 2096 2097 strncpy(ki->p_comm, p->p_comm, 2098 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2099 2100 strncpy(ki->p_login, p->p_session->s_login, 2101 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 2102 2103 ki->p_nlwps = p->p_nlwps; 2104 ki->p_nrlwps = p->p_nrlwps; 2105 ki->p_realflag = p->p_flag; 2106 2107 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2108 ki->p_vm_rssize = 0; 2109 ki->p_vm_tsize = 0; 2110 ki->p_vm_dsize = 0; 2111 ki->p_vm_ssize = 0; 2112 l = NULL; 2113 } else { 2114 struct vmspace *vm = p->p_vmspace; 2115 2116 ki->p_vm_rssize = vm_resident_count(vm); 2117 ki->p_vm_tsize = vm->vm_tsize; 2118 ki->p_vm_dsize = vm->vm_dsize; 2119 ki->p_vm_ssize = vm->vm_ssize; 2120 2121 /* Pick a "representative" LWP */ 2122 l = proc_representative_lwp(p); 2123 ki->p_forw = PTRTOINT64(l->l_forw); 2124 ki->p_back = PTRTOINT64(l->l_back); 2125 ki->p_addr = PTRTOINT64(l->l_addr); 2126 ki->p_stat = l->l_stat; 2127 ki->p_flag |= l->l_flag; 2128 ki->p_swtime = l->l_swtime; 2129 ki->p_slptime = l->l_slptime; 2130 if (l->l_stat == LSONPROC) { 2131 KDASSERT(l->l_cpu != NULL); 2132 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2133 } else 2134 ki->p_schedflags = 0; 2135 ki->p_holdcnt = l->l_holdcnt; 2136 ki->p_priority = l->l_priority; 2137 ki->p_usrpri = l->l_usrpri; 2138 if (l->l_wmesg) 2139 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 2140 ki->p_wchan = PTRTOINT64(l->l_wchan); 2141 2142 } 2143 2144 if (p->p_session->s_ttyvp) 2145 ki->p_eflag |= EPROC_CTTY; 2146 if (SESS_LEADER(p)) 2147 ki->p_eflag |= EPROC_SLEADER; 2148 2149 /* XXX Is this double check necessary? */ 2150 if (P_ZOMBIE(p)) { 2151 ki->p_uvalid = 0; 2152 } else { 2153 ki->p_uvalid = 1; 2154 2155 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 2156 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 2157 2158 calcru(p, &ut, &st, 0); 2159 ki->p_uutime_sec = ut.tv_sec; 2160 ki->p_uutime_usec = ut.tv_usec; 2161 ki->p_ustime_sec = st.tv_sec; 2162 ki->p_ustime_usec = st.tv_usec; 2163 2164 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 2165 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 2166 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 2167 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 2168 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 2169 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 2170 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 2171 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 2172 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 2173 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 2174 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 2175 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 2176 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 2177 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 2178 2179 timeradd(&p->p_stats->p_cru.ru_utime, 2180 &p->p_stats->p_cru.ru_stime, &ut); 2181 ki->p_uctime_sec = ut.tv_sec; 2182 ki->p_uctime_usec = ut.tv_usec; 2183 } 2184 #ifdef MULTIPROCESSOR 2185 if (l && l->l_cpu != NULL) 2186 ki->p_cpuid = l->l_cpu->ci_cpuid; 2187 else 2188 #endif 2189 ki->p_cpuid = KI_NOCPU; 2190 } 2191 2192 /* 2193 * Fill in a kinfo_lwp structure for the specified lwp. 2194 */ 2195 static void 2196 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 2197 { 2198 2199 kl->l_forw = PTRTOINT64(l->l_forw); 2200 kl->l_back = PTRTOINT64(l->l_back); 2201 kl->l_laddr = PTRTOINT64(l); 2202 kl->l_addr = PTRTOINT64(l->l_addr); 2203 kl->l_stat = l->l_stat; 2204 kl->l_lid = l->l_lid; 2205 kl->l_flag = l->l_flag; 2206 2207 kl->l_swtime = l->l_swtime; 2208 kl->l_slptime = l->l_slptime; 2209 if (l->l_stat == LSONPROC) { 2210 KDASSERT(l->l_cpu != NULL); 2211 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2212 } else 2213 kl->l_schedflags = 0; 2214 kl->l_holdcnt = l->l_holdcnt; 2215 kl->l_priority = l->l_priority; 2216 kl->l_usrpri = l->l_usrpri; 2217 if (l->l_wmesg) 2218 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 2219 kl->l_wchan = PTRTOINT64(l->l_wchan); 2220 #ifdef MULTIPROCESSOR 2221 if (l->l_cpu != NULL) 2222 kl->l_cpuid = l->l_cpu->ci_cpuid; 2223 else 2224 #endif 2225 kl->l_cpuid = KI_NOCPU; 2226 } 2227 2228 /* 2229 * Fill in an eproc structure for the specified process. 2230 */ 2231 void 2232 fill_eproc(struct proc *p, struct eproc *ep) 2233 { 2234 struct tty *tp; 2235 struct lwp *l; 2236 2237 ep->e_paddr = p; 2238 ep->e_sess = p->p_session; 2239 ep->e_pcred = *p->p_cred; 2240 ep->e_ucred = *p->p_ucred; 2241 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2242 ep->e_vm.vm_rssize = 0; 2243 ep->e_vm.vm_tsize = 0; 2244 ep->e_vm.vm_dsize = 0; 2245 ep->e_vm.vm_ssize = 0; 2246 /* ep->e_vm.vm_pmap = XXX; */ 2247 } else { 2248 struct vmspace *vm = p->p_vmspace; 2249 2250 ep->e_vm.vm_rssize = vm_resident_count(vm); 2251 ep->e_vm.vm_tsize = vm->vm_tsize; 2252 ep->e_vm.vm_dsize = vm->vm_dsize; 2253 ep->e_vm.vm_ssize = vm->vm_ssize; 2254 2255 /* Pick a "representative" LWP */ 2256 l = proc_representative_lwp(p); 2257 2258 if (l->l_wmesg) 2259 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 2260 } 2261 if (p->p_pptr) 2262 ep->e_ppid = p->p_pptr->p_pid; 2263 else 2264 ep->e_ppid = 0; 2265 ep->e_pgid = p->p_pgrp->pg_id; 2266 ep->e_sid = ep->e_sess->s_sid; 2267 ep->e_jobc = p->p_pgrp->pg_jobc; 2268 if ((p->p_flag & P_CONTROLT) && 2269 (tp = ep->e_sess->s_ttyp)) { 2270 ep->e_tdev = tp->t_dev; 2271 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2272 ep->e_tsess = tp->t_session; 2273 } else 2274 ep->e_tdev = NODEV; 2275 2276 ep->e_xsize = ep->e_xrssize = 0; 2277 ep->e_xccount = ep->e_xswrss = 0; 2278 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 2279 if (SESS_LEADER(p)) 2280 ep->e_flag |= EPROC_SLEADER; 2281 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 2282 } 2283
Indexes created Wed Oct 01 15:09:59 GMT 2025