init_sysctl.c revision 1.3
1 /* $NetBSD: init_sysctl.c,v 1.3 2003/12/06 09:36:34 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 "pty.h" 42 #include "rnd.h" 43 44 #include <sys/types.h> 45 #include <sys/param.h> 46 #include <sys/sysctl.h> 47 #include <sys/errno.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/unistd.h> 51 #include <sys/disklabel.h> 52 #include <sys/rnd.h> 53 #include <sys/vnode.h> 54 #include <sys/mount.h> 55 #include <sys/namei.h> 56 #include <sys/msgbuf.h> 57 #include <dev/cons.h> 58 #include <sys/socketvar.h> 59 #include <sys/file.h> 60 #include <sys/tty.h> 61 #include <sys/malloc.h> 62 #include <sys/resource.h> 63 #include <sys/resourcevar.h> 64 #include <sys/exec.h> 65 #include <sys/conf.h> 66 #include <sys/device.h> 67 68 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 69 #include <sys/ipc.h> 70 #endif 71 #ifdef SYSVMSG 72 #include <sys/msg.h> 73 #endif 74 #ifdef SYSVSEM 75 #include <sys/sem.h> 76 #endif 77 #ifdef SYSVSHM 78 #include <sys/shm.h> 79 #endif 80 81 /* 82 * try over estimating by 5 procs/lwps 83 */ 84 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 85 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 86 87 /* 88 * convert pointer to 64 int for struct kinfo_proc2 89 */ 90 #define PTRTOINT64(foo) ((u_int64_t)(uintptr_t)(foo)) 91 92 #ifndef MULTIPROCESSOR 93 #define sysctl_ncpus() (1) 94 #else /* MULTIPROCESSOR */ 95 #ifndef CPU_INFO_FOREACH 96 #define CPU_INFO_ITERATOR int 97 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 98 #endif 99 static int 100 sysctl_ncpus(void) 101 { 102 struct cpu_info *ci; 103 CPU_INFO_ITERATOR cii; 104 105 int ncpus = 0; 106 for (CPU_INFO_FOREACH(cii, ci)) 107 ncpus++; 108 return (ncpus); 109 } 110 #endif /* MULTIPROCESSOR */ 111 112 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 113 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 114 static int sysctl_kern_securelevel(SYSCTLFN_PROTO); 115 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 116 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 117 static int sysctl_kern_file(SYSCTLFN_PROTO); 118 static int sysctl_kern_autonice(SYSCTLFN_PROTO); 119 static int sysctl_msgbuf(SYSCTLFN_PROTO); 120 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 121 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 122 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 123 static int sysctl_kern_sysvipc(SYSCTLFN_PROTO); 124 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 125 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 126 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 127 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 128 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 129 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 130 static int sysctl_kern_somaxkva(SYSCTLFN_PROTO); 131 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 132 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 133 static int sysctl_doeproc(SYSCTLFN_PROTO); 134 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 135 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 136 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 137 static int sysctl_hw_ncpu(SYSCTLFN_PROTO); 138 139 static void fill_kproc2(struct proc *, struct kinfo_proc2 *); 140 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 141 142 /* 143 * ******************************************************************** 144 * section 1: setup routines 145 * ******************************************************************** 146 * these functions are stuffed into a link set for sysctl setup 147 * functions. they're never called or referenced from anywhere else. 148 * ******************************************************************** 149 */ 150 151 /* 152 * sets up the base nodes... 153 */ 154 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 155 { 156 157 sysctl_createv(SYSCTL_PERMANENT, 158 CTLTYPE_NODE, "kern", NULL, 159 NULL, 0, NULL, 0, 160 CTL_KERN, CTL_EOL); 161 sysctl_createv(SYSCTL_PERMANENT, 162 CTLTYPE_NODE, "vm", NULL, 163 NULL, 0, NULL, 0, 164 CTL_VM, CTL_EOL); 165 sysctl_createv(SYSCTL_PERMANENT, 166 CTLTYPE_NODE, "vfs", NULL, 167 NULL, 0, NULL, 0, 168 CTL_VFS, CTL_EOL); 169 sysctl_createv(SYSCTL_PERMANENT, 170 CTLTYPE_NODE, "net", NULL, 171 NULL, 0, NULL, 0, 172 CTL_NET, CTL_EOL); 173 sysctl_createv(SYSCTL_PERMANENT, 174 CTLTYPE_NODE, "debug", NULL, 175 NULL, 0, NULL, 0, 176 CTL_DEBUG, CTL_EOL); 177 sysctl_createv(SYSCTL_PERMANENT, 178 CTLTYPE_NODE, "hw", NULL, 179 NULL, 0, NULL, 0, 180 CTL_HW, CTL_EOL); 181 sysctl_createv(SYSCTL_PERMANENT, 182 CTLTYPE_NODE, "machdep", NULL, 183 NULL, 0, NULL, 0, 184 CTL_MACHDEP, CTL_EOL); 185 /* 186 * this node is inserted so that the sysctl nodes in libc can 187 * operate. 188 */ 189 sysctl_createv(SYSCTL_PERMANENT, 190 CTLTYPE_NODE, "user", NULL, 191 NULL, 0, NULL, 0, 192 CTL_USER, CTL_EOL); 193 sysctl_createv(SYSCTL_PERMANENT, 194 CTLTYPE_NODE, "ddb", NULL, 195 NULL, 0, NULL, 0, 196 CTL_DDB, CTL_EOL); 197 sysctl_createv(SYSCTL_PERMANENT, 198 CTLTYPE_NODE, "proc", NULL, 199 NULL, 0, NULL, 0, 200 CTL_PROC, CTL_EOL); 201 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 202 CTLTYPE_NODE, "vendor", NULL, 203 NULL, 0, NULL, 0, 204 CTL_VENDOR, CTL_EOL); 205 sysctl_createv(SYSCTL_PERMANENT, 206 CTLTYPE_NODE, "emul", NULL, 207 NULL, 0, NULL, 0, 208 CTL_EMUL, CTL_EOL); 209 } 210 211 /* 212 * this setup routine is a replacement for kern_sysctl() 213 */ 214 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 215 { 216 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 217 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 218 extern int dumponpanic; /* defined in kern/subr_prf.c */ 219 220 sysctl_createv(SYSCTL_PERMANENT, 221 CTLTYPE_NODE, "kern", NULL, 222 NULL, 0, NULL, 0, 223 CTL_KERN, CTL_EOL); 224 225 sysctl_createv(SYSCTL_PERMANENT, 226 CTLTYPE_STRING, "ostype", NULL, 227 NULL, 0, &ostype, 0, 228 CTL_KERN, KERN_OSTYPE, CTL_EOL); 229 sysctl_createv(SYSCTL_PERMANENT, 230 CTLTYPE_STRING, "osrelease", NULL, 231 NULL, 0, &osrelease, 0, 232 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 233 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 234 CTLTYPE_INT, "osrevision", NULL, 235 NULL, __NetBSD_Version__, NULL, 0, 236 CTL_KERN, KERN_OSREV, CTL_EOL); 237 sysctl_createv(SYSCTL_PERMANENT, 238 CTLTYPE_STRING, "version", NULL, 239 NULL, 0, &version, 0, 240 CTL_KERN, KERN_VERSION, CTL_EOL); 241 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 242 CTLTYPE_INT, "maxvnodes", NULL, 243 sysctl_kern_maxvnodes, 0, NULL, 0, 244 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 245 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 246 CTLTYPE_INT, "maxproc", NULL, 247 sysctl_kern_maxproc, 0, NULL, 0, 248 CTL_KERN, KERN_MAXPROC, CTL_EOL); 249 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 250 CTLTYPE_INT, "maxfiles", NULL, 251 NULL, 0, &maxfiles, 0, 252 CTL_KERN, KERN_MAXFILES, CTL_EOL); 253 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 254 CTLTYPE_INT, "argmax", NULL, 255 NULL, ARG_MAX, NULL, 0, 256 CTL_KERN, KERN_ARGMAX, CTL_EOL); 257 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 258 CTLTYPE_INT, "securelevel", NULL, 259 sysctl_kern_securelevel, 0, &securelevel, 0, 260 CTL_KERN, KERN_SECURELVL, CTL_EOL); 261 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 262 CTLTYPE_STRING, "hostname", NULL, 263 NULL, 0, &hostname, MAXHOSTNAMELEN, 264 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 265 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 266 CTLTYPE_INT, "hostid", NULL, 267 sysctl_kern_hostid, 0, NULL, 0, 268 CTL_KERN, KERN_HOSTID, CTL_EOL); 269 sysctl_createv(SYSCTL_PERMANENT, 270 CTLTYPE_STRUCT, "clockrate", NULL, 271 sysctl_kern_clockrate, 0, NULL, 272 sizeof(struct clockinfo), 273 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 274 sysctl_createv(SYSCTL_PERMANENT, 275 CTLTYPE_STRUCT, "vnode", NULL, 276 sysctl_kern_vnode, 0, NULL, 0, 277 CTL_KERN, KERN_VNODE, CTL_EOL); 278 sysctl_createv(SYSCTL_PERMANENT, 279 CTLTYPE_STRUCT, "file", NULL, 280 sysctl_kern_file, 0, NULL, 0, 281 CTL_KERN, KERN_FILE, CTL_EOL); 282 #ifndef GPROF 283 sysctl_createv(SYSCTL_PERMANENT, 284 CTLTYPE_NODE, "profiling", NULL, 285 sysctl_notavail, 0, NULL, 0, 286 CTL_KERN, KERN_PROF, CTL_EOL); 287 #endif 288 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 289 CTLTYPE_INT, "posix1version", NULL, 290 NULL, _POSIX_VERSION, NULL, 0, 291 CTL_KERN, KERN_POSIX1, CTL_EOL); 292 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 293 CTLTYPE_INT, "ngroups", NULL, 294 NULL, NGROUPS_MAX, NULL, 0, 295 CTL_KERN, KERN_NGROUPS, CTL_EOL); 296 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 297 CTLTYPE_INT, "job_control", NULL, 298 NULL, 1, NULL, 0, 299 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 300 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 301 CTLTYPE_INT, "saved_ids", NULL, NULL, 302 #ifdef _POSIX_SAVED_IDS 303 1, 304 #else /* _POSIX_SAVED_IDS */ 305 0, 306 #endif /* _POSIX_SAVED_IDS */ 307 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 308 sysctl_createv(SYSCTL_PERMANENT, 309 CTLTYPE_STRUCT, "boottime", NULL, 310 NULL, 0, &boottime, sizeof(boottime), 311 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 312 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 313 CTLTYPE_STRING, "domainname", NULL, 314 NULL, 0, &domainname, MAXHOSTNAMELEN, 315 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 316 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 317 CTLTYPE_INT, "maxpartitions", NULL, 318 NULL, MAXPARTITIONS, NULL, 0, 319 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 320 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 321 CTLTYPE_INT, "rawpartition", NULL, 322 NULL, RAW_PART, NULL, 0, 323 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 324 sysctl_createv(SYSCTL_PERMANENT, 325 CTLTYPE_STRUCT, "timex", NULL, 326 sysctl_notavail, 0, NULL, 0, 327 CTL_KERN, KERN_TIMEX, CTL_EOL); 328 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 329 CTLTYPE_INT, "autonicetime", NULL, 330 sysctl_kern_autonice, 0, &autonicetime, 0, 331 CTL_KERN, KERN_AUTONICETIME, CTL_EOL); 332 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 333 CTLTYPE_INT, "autoniceval", NULL, 334 sysctl_kern_autonice, 0, &autoniceval, 0, 335 CTL_KERN, KERN_AUTONICEVAL, CTL_EOL); 336 sysctl_createv(SYSCTL_PERMANENT, 337 CTLTYPE_INT, "rtc_offset", NULL, 338 NULL, 0, &rtc_offset, 0, 339 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 340 sysctl_createv(SYSCTL_PERMANENT, 341 CTLTYPE_STRING, "root_device", NULL, 342 sysctl_root_device, 0, NULL, 0, 343 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 344 sysctl_createv(SYSCTL_PERMANENT, 345 CTLTYPE_INT, "msgbufsize", NULL, 346 sysctl_msgbuf, 0, &msgbufp->msg_bufs, 0, 347 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 348 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 349 CTLTYPE_INT, "fsync", NULL, 350 NULL, 1, NULL, 0, 351 CTL_KERN, KERN_FSYNC, CTL_EOL); 352 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 353 CTLTYPE_INT, "sysvmsg", NULL, NULL, 354 #ifdef SYSVMSG 355 1, 356 #else /* SYSVMSG */ 357 0, 358 #endif /* SYSVMSG */ 359 NULL, 0, CTL_KERN, KERN_SYSVMSG, CTL_EOL); 360 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 361 CTLTYPE_INT, "sysvsem", NULL, NULL, 362 #ifdef SYSVSEM 363 1, 364 #else /* SYSVSEM */ 365 0, 366 #endif /* SYSVSEM */ 367 NULL, 0, CTL_KERN, KERN_SYSVSEM, CTL_EOL); 368 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 369 CTLTYPE_INT, "sysvshm", NULL, NULL, 370 #ifdef SYSVSHM 371 1, 372 #else /* SYSVSHM */ 373 0, 374 #endif /* SYSVSHM */ 375 NULL, 0, CTL_KERN, KERN_SYSVSHM, CTL_EOL); 376 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 377 CTLTYPE_INT, "synchronized_io", NULL, 378 NULL, 1, NULL, 0, 379 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 380 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 381 CTLTYPE_INT, "iov_max", NULL, 382 NULL, IOV_MAX, NULL, 0, 383 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 384 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 385 CTLTYPE_INT, "mapped_files", NULL, 386 NULL, 1, NULL, 0, 387 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 388 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 389 CTLTYPE_INT, "memlock", NULL, 390 NULL, 1, NULL, 0, 391 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 392 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 393 CTLTYPE_INT, "memlock_range", NULL, 394 NULL, 1, NULL, 0, 395 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 396 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 397 CTLTYPE_INT, "memory_protection", NULL, 398 NULL, 1, NULL, 0, 399 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 400 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 401 CTLTYPE_INT, "login_name_max", NULL, 402 NULL, LOGIN_NAME_MAX, NULL, 0, 403 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 404 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 405 CTLTYPE_STRING, "defcorename", NULL, 406 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 407 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 408 sysctl_createv(SYSCTL_PERMANENT, 409 CTLTYPE_INT, "logsigexit", NULL, 410 NULL, 0, &kern_logsigexit, 0, 411 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 412 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 413 CTLTYPE_INT, "fscale", NULL, 414 NULL, FSCALE, NULL, 0, 415 CTL_KERN, KERN_FSCALE, CTL_EOL); 416 sysctl_createv(SYSCTL_PERMANENT, 417 CTLTYPE_INT, "ccpu", NULL, 418 NULL, 0, &ccpu, 0, 419 CTL_KERN, KERN_CCPU, CTL_EOL); 420 sysctl_createv(SYSCTL_PERMANENT, 421 CTLTYPE_STRUCT, "cp_time", NULL, 422 sysctl_kern_cptime, 0, NULL, 0, 423 CTL_KERN, KERN_CP_TIME, CTL_EOL); 424 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 425 sysctl_createv(SYSCTL_PERMANENT, 426 CTLTYPE_STRUCT, "sysvipc_info", NULL, 427 sysctl_kern_sysvipc, 0, NULL, 0, 428 CTL_KERN, KERN_SYSVIPC_INFO, CTL_EOL); 429 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 430 sysctl_createv(SYSCTL_PERMANENT, 431 CTLTYPE_INT, "msgbuf", NULL, 432 sysctl_msgbuf, 0, NULL, 0, 433 CTL_KERN, KERN_MSGBUF, CTL_EOL); 434 sysctl_createv(SYSCTL_PERMANENT, 435 CTLTYPE_STRUCT, "consdev", NULL, 436 sysctl_consdev, 0, NULL, sizeof(dev_t), 437 CTL_KERN, KERN_CONSDEV, CTL_EOL); 438 #if NPTY > 0 439 sysctl_createv(SYSCTL_PERMANENT, 440 CTLTYPE_INT, "maxptys", NULL, 441 sysctl_kern_maxptys, 0, NULL, 0, 442 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 443 #endif /* NPTY > 0 */ 444 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 445 CTLTYPE_INT, "maxphys", NULL, 446 NULL, MAXPHYS, NULL, 0, 447 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 448 sysctl_createv(SYSCTL_PERMANENT, 449 CTLTYPE_INT, "sbmax", NULL, 450 sysctl_kern_sbmax, 0, NULL, 0, 451 CTL_KERN, KERN_SBMAX, CTL_EOL); 452 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 453 CTLTYPE_INT, "monotonic_clock", NULL, 454 /* XXX _POSIX_VERSION */ 455 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 456 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 457 sysctl_createv(SYSCTL_PERMANENT, 458 CTLTYPE_INT, "urandom", NULL, 459 sysctl_kern_urnd, 0, NULL, 0, 460 CTL_KERN, KERN_URND, CTL_EOL); 461 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 462 CTLTYPE_INT, "labelsector", NULL, 463 NULL, LABELSECTOR, NULL, 0, 464 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 465 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 466 CTLTYPE_INT, "labeloffset", NULL, 467 NULL, LABELOFFSET, NULL, 0, 468 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 469 sysctl_createv(SYSCTL_PERMANENT, 470 CTLTYPE_NODE, "lwp", NULL, 471 sysctl_kern_lwp, 0, NULL, 0, 472 CTL_KERN, KERN_LWP, CTL_EOL); 473 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 474 CTLTYPE_INT, "forkfsleep", NULL, 475 sysctl_kern_forkfsleep, 0, NULL, 0, 476 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 477 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 478 CTLTYPE_INT, "posix_threads", NULL, 479 /* XXX _POSIX_VERSION */ 480 NULL, _POSIX_THREADS, NULL, 0, 481 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 482 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 483 CTLTYPE_INT, "posix_semaphores", NULL, NULL, 484 #ifdef P1003_1B_SEMAPHORE 485 200112, 486 #else /* P1003_1B_SEMAPHORE */ 487 0, 488 #endif /* P1003_1B_SEMAPHORE */ 489 NULL, 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 490 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 491 CTLTYPE_INT, "posix_barriers", NULL, 492 /* XXX _POSIX_VERSION */ 493 NULL, _POSIX_BARRIERS, NULL, 0, 494 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 495 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 496 CTLTYPE_INT, "posix_timers", NULL, 497 /* XXX _POSIX_VERSION */ 498 NULL, _POSIX_TIMERS, NULL, 0, 499 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 500 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 501 CTLTYPE_INT, "posix_spin_locks", NULL, 502 /* XXX _POSIX_VERSION */ 503 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 504 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 505 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 506 CTLTYPE_INT, "posix_reader_writer_locks", NULL, 507 /* XXX _POSIX_VERSION */ 508 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 509 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 510 sysctl_createv(SYSCTL_PERMANENT, 511 CTLTYPE_INT, "dump_on_panic", NULL, 512 NULL, 0, &dumponpanic, 0, 513 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 514 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 515 CTLTYPE_INT, "somaxkva", NULL, 516 sysctl_kern_somaxkva, 0, NULL, 0, 517 CTL_KERN, KERN_SOMAXKVA, CTL_EOL); 518 sysctl_createv(SYSCTL_PERMANENT, 519 CTLTYPE_INT, "root_partition", NULL, 520 sysctl_kern_root_partition, 0, NULL, 0, 521 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 522 sysctl_createv(SYSCTL_PERMANENT, 523 CTLTYPE_STRUCT, "drivers", NULL, 524 sysctl_kern_drivers, 0, NULL, 0, 525 CTL_KERN, KERN_DRIVERS, CTL_EOL); 526 } 527 528 SYSCTL_SETUP(sysctl_kern_proc_setup, 529 "sysctl kern.proc/proc2/proc_args subtree setup") 530 { 531 532 sysctl_createv(SYSCTL_PERMANENT, 533 CTLTYPE_NODE, "kern", NULL, 534 NULL, 0, NULL, 0, 535 CTL_KERN, CTL_EOL); 536 537 sysctl_createv(SYSCTL_PERMANENT, 538 CTLTYPE_NODE, "proc", NULL, 539 sysctl_doeproc, 0, NULL, 0, 540 CTL_KERN, KERN_PROC, CTL_EOL); 541 sysctl_createv(SYSCTL_PERMANENT, 542 CTLTYPE_NODE, "proc2", NULL, 543 sysctl_doeproc, 0, NULL, 0, 544 CTL_KERN, KERN_PROC2, CTL_EOL); 545 sysctl_createv(SYSCTL_PERMANENT, 546 CTLTYPE_NODE, "proc_args", NULL, 547 sysctl_kern_proc_args, 0, NULL, 0, 548 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 549 550 /* 551 "nodes" under these: 552 553 KERN_PROC_ALL 554 KERN_PROC_PID pid 555 KERN_PROC_PGRP pgrp 556 KERN_PROC_SESSION sess 557 KERN_PROC_TTY tty 558 KERN_PROC_UID uid 559 KERN_PROC_RUID uid 560 KERN_PROC_GID gid 561 KERN_PROC_RGID gid 562 563 all in all, probably not worth the effort... 564 */ 565 } 566 567 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 568 { 569 u_int u; 570 u_quad_t q; 571 572 sysctl_createv(SYSCTL_PERMANENT, 573 CTLTYPE_NODE, "hw", NULL, 574 NULL, 0, NULL, 0, 575 CTL_HW, CTL_EOL); 576 577 sysctl_createv(SYSCTL_PERMANENT, 578 CTLTYPE_STRING, "machine", NULL, 579 NULL, 0, machine, 0, 580 CTL_HW, HW_MACHINE, CTL_EOL); 581 sysctl_createv(SYSCTL_PERMANENT, 582 CTLTYPE_STRING, "model", NULL, 583 NULL, 0, cpu_model, 0, 584 CTL_HW, HW_MODEL, CTL_EOL); 585 sysctl_createv(SYSCTL_PERMANENT, 586 CTLTYPE_INT, "ncpu", NULL, 587 sysctl_hw_ncpu, 0, NULL, 0, 588 CTL_HW, HW_NCPU, CTL_EOL); 589 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 590 CTLTYPE_INT, "byteorder", NULL, 591 NULL, BYTE_ORDER, NULL, 0, 592 CTL_HW, HW_BYTEORDER, CTL_EOL); 593 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 594 UINT_MAX : physmem * PAGE_SIZE; 595 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 596 CTLTYPE_INT, "physmem", NULL, 597 NULL, u, NULL, 0, 598 CTL_HW, HW_PHYSMEM, CTL_EOL); 599 sysctl_createv(SYSCTL_PERMANENT, 600 CTLTYPE_INT, "usermem", NULL, 601 sysctl_hw_usermem, 0, NULL, 0, 602 CTL_HW, HW_USERMEM, CTL_EOL); 603 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 604 CTLTYPE_INT, "pagesize", NULL, 605 NULL, PAGE_SIZE, NULL, 0, 606 CTL_HW, HW_PAGESIZE, CTL_EOL); 607 sysctl_createv(SYSCTL_PERMANENT, 608 CTLTYPE_STRING, "disknames", NULL, 609 sysctl_hw_disknames, 0, NULL, 0, 610 CTL_HW, HW_DISKNAMES, CTL_EOL); 611 sysctl_createv(SYSCTL_PERMANENT, 612 CTLTYPE_STRUCT, "diskstats", NULL, 613 sysctl_hw_diskstats, 0, NULL, 0, 614 CTL_HW, HW_DISKSTATS, CTL_EOL); 615 sysctl_createv(SYSCTL_PERMANENT, 616 CTLTYPE_STRING, "machine_arch", NULL, 617 NULL, 0, machine_arch, 0, 618 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 619 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 620 CTLTYPE_INT, "alignbytes", NULL, 621 NULL, ALIGNBYTES, NULL, 0, 622 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 623 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE|SYSCTL_HEX, 624 CTLTYPE_STRING, "cnmagic", NULL, 625 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 626 CTL_HW, HW_CNMAGIC, CTL_EOL); 627 q = (u_quad_t)physmem * PAGE_SIZE; 628 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 629 CTLTYPE_QUAD, "physmem64", NULL, 630 NULL, q, NULL, 0, 631 CTL_HW, HW_PHYSMEM64, CTL_EOL); 632 sysctl_createv(SYSCTL_PERMANENT, 633 CTLTYPE_QUAD, "usermem64", NULL, 634 sysctl_hw_usermem, 0, NULL, 0, 635 CTL_HW, HW_USERMEM64, CTL_EOL); 636 } 637 638 #ifdef DEBUG 639 /* 640 * Debugging related system variables. 641 */ 642 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 643 struct ctldebug debug5, debug6, debug7, debug8, debug9; 644 struct ctldebug debug10, debug11, debug12, debug13, debug14; 645 struct ctldebug debug15, debug16, debug17, debug18, debug19; 646 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 647 &debug0, &debug1, &debug2, &debug3, &debug4, 648 &debug5, &debug6, &debug7, &debug8, &debug9, 649 &debug10, &debug11, &debug12, &debug13, &debug14, 650 &debug15, &debug16, &debug17, &debug18, &debug19, 651 }; 652 653 /* 654 * this setup routine is a replacement for debug_sysctl() 655 * 656 * note that it creates several nodes per defined debug variable 657 */ 658 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 659 { 660 struct ctldebug *cdp; 661 char nodename[20]; 662 int i; 663 664 /* 665 * two ways here: 666 * 667 * the "old" way (debug.name -> value) which was emulated by 668 * the sysctl(8) binary 669 * 670 * the new way, which the sysctl(8) binary was actually using 671 672 node debug 673 node debug.0 674 string debug.0.name 675 int debug.0.value 676 int debug.name 677 678 */ 679 680 sysctl_createv(SYSCTL_PERMANENT, 681 CTLTYPE_NODE, "debug", NULL, 682 NULL, 0, NULL, 0, 683 CTL_DEBUG, CTL_EOL); 684 685 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 686 cdp = debugvars[i]; 687 if (cdp->debugname == NULL || cdp->debugvar == NULL) 688 continue; 689 690 snprintf(nodename, sizeof(nodename), "debug%d", i); 691 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 692 CTLTYPE_NODE, nodename, NULL, 693 NULL, 0, NULL, 0, 694 CTL_DEBUG, i, CTL_EOL); 695 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 696 CTLTYPE_STRING, "name", NULL, 697 NULL, 0, cdp->debugname, 0, 698 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 699 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 700 CTLTYPE_INT, "value", NULL, 701 NULL, 0, cdp->debugvar, 0, 702 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 703 sysctl_createv(SYSCTL_PERMANENT, 704 CTLTYPE_INT, cdp->debugname, NULL, 705 NULL, 0, cdp->debugvar, 0, 706 CTL_DEBUG, CTL_CREATE, CTL_EOL); 707 } 708 } 709 #endif /* DEBUG */ 710 711 /* 712 * ******************************************************************** 713 * section 2: private node-specific helper routines. 714 * ******************************************************************** 715 */ 716 717 /* 718 * sysctl helper routine for kern.maxvnodes. handles ensuring that 719 * new values never falls below desiredvnodes and then calls reinit 720 * routines that needs to adjust to the new value. 721 */ 722 static int 723 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 724 { 725 int error, new_vnodes; 726 struct sysctlnode node; 727 728 new_vnodes = desiredvnodes; 729 node = *rnode; 730 node.sysctl_data = &new_vnodes; 731 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 732 if (error || newp == NULL) 733 return (error); 734 735 if (new_vnodes < desiredvnodes) 736 return (EINVAL); 737 desiredvnodes = new_vnodes; 738 vfs_reinit(); 739 nchreinit(); 740 741 return (0); 742 } 743 744 /* 745 * sysctl helper routine for kern.maxvnodes. ensures that the new 746 * values are not too low or too high. 747 */ 748 static int 749 sysctl_kern_maxproc(SYSCTLFN_ARGS) 750 { 751 int error, nmaxproc; 752 struct sysctlnode node; 753 754 nmaxproc = maxproc; 755 node = *rnode; 756 node.sysctl_data = &nmaxproc; 757 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 758 if (error || newp == NULL) 759 return (error); 760 761 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 762 return (EINVAL); 763 #ifdef __HAVE_CPU_MAXPROC 764 if (nmaxproc > cpu_maxproc()) 765 return (EINVAL); 766 #endif 767 maxproc = nmaxproc; 768 769 return (0); 770 } 771 772 /* 773 * sysctl helper routine for kern.securelevel. ensures that the value 774 * only rises unless the caller has pid 1 (assumed to be init). 775 */ 776 static int 777 sysctl_kern_securelevel(SYSCTLFN_ARGS) 778 { 779 int newsecurelevel, error; 780 struct sysctlnode node; 781 782 newsecurelevel = securelevel; 783 node = *rnode; 784 node.sysctl_data = &newsecurelevel; 785 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 786 if (error || newp == NULL) 787 return (error); 788 789 if (newsecurelevel < securelevel && l->l_proc->p_pid != 1) 790 return (EPERM); 791 securelevel = newsecurelevel; 792 793 return (error); 794 } 795 796 /* 797 * sysctl helper function for kern.hostid. the hostid is a long, but 798 * we export it as an int, so we need to give it a little help. 799 */ 800 static int 801 sysctl_kern_hostid(SYSCTLFN_ARGS) 802 { 803 int error, inthostid; 804 struct sysctlnode node; 805 806 inthostid = hostid; /* XXX assumes sizeof int >= sizeof long */ 807 node = *rnode; 808 node.sysctl_data = &inthostid; 809 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 810 if (error || newp == NULL) 811 return (error); 812 813 hostid = inthostid; 814 815 return (0); 816 } 817 818 /* 819 * sysctl helper routine for kern.clockrate. assembles a struct on 820 * the fly to be returned to the caller. 821 */ 822 static int 823 sysctl_kern_clockrate(SYSCTLFN_ARGS) 824 { 825 struct clockinfo clkinfo; 826 struct sysctlnode node; 827 828 clkinfo.tick = tick; 829 clkinfo.tickadj = tickadj; 830 clkinfo.hz = hz; 831 clkinfo.profhz = profhz; 832 clkinfo.stathz = stathz ? stathz : hz; 833 834 node = *rnode; 835 node.sysctl_data = &clkinfo; 836 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 837 } 838 839 840 /* 841 * sysctl helper routine for kern.file pseudo-subtree. 842 */ 843 static int 844 sysctl_kern_file(SYSCTLFN_ARGS) 845 { 846 int error; 847 size_t buflen; 848 struct file *fp; 849 char *start, *where; 850 851 start = where = oldp; 852 buflen = *oldlenp; 853 if (where == NULL) { 854 /* 855 * overestimate by 10 files 856 */ 857 *oldlenp = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 858 return (0); 859 } 860 861 /* 862 * first copyout filehead 863 */ 864 if (buflen < sizeof(filehead)) { 865 *oldlenp = 0; 866 return (0); 867 } 868 error = copyout(&filehead, where, sizeof(filehead)); 869 if (error) 870 return (error); 871 buflen -= sizeof(filehead); 872 where += sizeof(filehead); 873 874 /* 875 * followed by an array of file structures 876 */ 877 LIST_FOREACH(fp, &filehead, f_list) { 878 if (buflen < sizeof(struct file)) { 879 *oldlenp = where - start; 880 return (ENOMEM); 881 } 882 error = copyout(fp, where, sizeof(struct file)); 883 if (error) 884 return (error); 885 buflen -= sizeof(struct file); 886 where += sizeof(struct file); 887 } 888 *oldlenp = where - start; 889 return (0); 890 } 891 892 /* 893 * sysctl helper routine for kern.autonicetime and kern.autoniceval. 894 * asserts that the assigned value is in the correct range. 895 */ 896 static int 897 sysctl_kern_autonice(SYSCTLFN_ARGS) 898 { 899 int error, t = 0; 900 struct sysctlnode node; 901 902 node = *rnode; 903 t = *(int*)node.sysctl_data; 904 node.sysctl_data = &t; 905 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 906 if (error || newp == NULL) 907 return (error); 908 909 switch (node.sysctl_num) { 910 case KERN_AUTONICETIME: 911 if (t >= 0) 912 autonicetime = t; 913 break; 914 case KERN_AUTONICEVAL: 915 if (t < PRIO_MIN) 916 t = PRIO_MIN; 917 else if (t > PRIO_MAX) 918 t = PRIO_MAX; 919 autoniceval = t; 920 break; 921 } 922 923 return (0); 924 } 925 926 /* 927 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. for the 928 * former it merely checks the the message buffer is set up. for the 929 * latter, it also copies out the data if necessary. 930 */ 931 static int 932 sysctl_msgbuf(SYSCTLFN_ARGS) 933 { 934 char *where = oldp; 935 size_t len, maxlen; 936 long beg, end; 937 int error; 938 939 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 940 msgbufenabled = 0; 941 return (ENXIO); 942 } 943 944 switch (rnode->sysctl_num) { 945 case KERN_MSGBUFSIZE: 946 return (sysctl_lookup(SYSCTLFN_CALL(rnode))); 947 case KERN_MSGBUF: 948 break; 949 default: 950 return (EOPNOTSUPP); 951 } 952 953 if (newp != NULL) 954 return (EPERM); 955 956 if (oldp == NULL) { 957 /* always return full buffer size */ 958 *oldlenp = msgbufp->msg_bufs; 959 return (0); 960 } 961 962 error = 0; 963 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 964 965 /* 966 * First, copy from the write pointer to the end of 967 * message buffer. 968 */ 969 beg = msgbufp->msg_bufx; 970 end = msgbufp->msg_bufs; 971 while (maxlen > 0) { 972 len = MIN(end - beg, maxlen); 973 if (len == 0) 974 break; 975 error = copyout(&msgbufp->msg_bufc[beg], where, len); 976 if (error) 977 break; 978 where += len; 979 maxlen -= len; 980 981 /* 982 * ... then, copy from the beginning of message buffer to 983 * the write pointer. 984 */ 985 beg = 0; 986 end = msgbufp->msg_bufx; 987 } 988 989 return (error); 990 } 991 992 /* 993 * sysctl helper routine for kern.defcorename. in the case of a new 994 * string being assigned, check that it's not a zero-length string. 995 * (XXX the check in -current doesn't work, but do we really care?) 996 */ 997 static int 998 sysctl_kern_defcorename(SYSCTLFN_ARGS) 999 { 1000 int error; 1001 char newcorename[MAXPATHLEN]; 1002 struct sysctlnode node; 1003 1004 node = *rnode; 1005 node.sysctl_data = &newcorename[0]; 1006 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1007 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1008 if (error || newp == NULL) 1009 return (error); 1010 1011 /* 1012 * when sysctl_lookup() deals with a string, it's guaranteed 1013 * to come back nul terminated. so there. :) 1014 */ 1015 if (strlen(newcorename) == 0) 1016 return (EINVAL); 1017 1018 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1019 1020 return (0); 1021 } 1022 1023 /* 1024 * sysctl helper routine for kern.cp_time node. adds up cpu time 1025 * across all cpus. 1026 */ 1027 static int 1028 sysctl_kern_cptime(SYSCTLFN_ARGS) 1029 { 1030 struct sysctlnode node = *rnode; 1031 u_int64_t *cp_time = NULL; 1032 int error; 1033 1034 #ifdef MULTIPROCESSOR 1035 int n = sysctl_ncpus(), i; 1036 struct cpu_info *ci; 1037 CPU_INFO_ITERATOR cii; 1038 1039 /* 1040 * if you specifically pass a buffer that is the size of the 1041 * sum, or if you are probing for the size, you get the "sum" 1042 * of cp_time (and the size thereof) across all processors. 1043 * 1044 * alternately, you can pass an additional mib number and get 1045 * cp_time for that particular processor. 1046 */ 1047 switch (namelen) { 1048 case 0: 1049 if (*oldlenp == sizeof(*cp_time) * CPUSTATES || oldp == NULL) { 1050 node.sysctl_size = sizeof(cp_time) * CPUSTATES; 1051 cp_time = malloc(node.sysctl_size, 1052 M_TEMP, M_WAITOK|M_CANFAIL); 1053 n = -1; /* SUM */ 1054 } 1055 else { 1056 node.sysctl_size = n * sizeof(cp_time) * CPUSTATES; 1057 cp_time = malloc(node.sysctl_size, 1058 M_TEMP, M_WAITOK|M_CANFAIL); 1059 n = -2; /* ALL */ 1060 } 1061 break; 1062 case 1: 1063 if (name[0] < 0 || name[0] >= n) 1064 return (EINVAL); /* ENOSUCHPROCESSOR */ 1065 node.sysctl_size = sizeof(cp_time) * CPUSTATES; 1066 cp_time = malloc(node.sysctl_size, 1067 M_TEMP, M_WAITOK|M_CANFAIL); 1068 n = name[0]; 1069 /* 1070 * adjust these so that sysctl_lookup() will be happy 1071 */ 1072 name++; 1073 namelen--; 1074 default: 1075 return (EINVAL); 1076 } 1077 1078 if (cp_time == NULL) 1079 return (ENOMEM); 1080 node.sysctl_data = cp_time; 1081 memset(cp_time, 0, node.sysctl_size); 1082 1083 for (CPU_INFO_FOREACH(cii, ci)) { 1084 /* 1085 * doing a sum or doing just this processor 1086 */ 1087 if (n == -1 || n == 0) 1088 for (i = 0; i < CPUSTATES; i++) 1089 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1090 /* 1091 * if a specific processor was requested and we just 1092 * did it, we're done here 1093 */ 1094 if (n == 0) 1095 break; 1096 /* 1097 * if doing "all", skip to next cp_time set for next processor 1098 */ 1099 if (n == -2) 1100 cp_time += CPUSTATES; 1101 /* 1102 * if we're doing a specific processor, we're one 1103 * processor closer 1104 */ 1105 if (n > 0) 1106 n--; 1107 } 1108 1109 #else /* MULTIPROCESSOR */ 1110 if (namelen == 1 && name[0] == 0) { 1111 name++; 1112 namelen--; 1113 } 1114 node.sysctl_data = curcpu()->ci_schedstate.spc_cp_time; 1115 node.sysctl_size = sizeof(curcpu()->ci_schedstate.spc_cp_time); 1116 #endif /* MULTIPROCESSOR */ 1117 1118 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1119 if (cp_time != NULL) 1120 free(cp_time, M_TEMP); 1121 1122 return (error); 1123 } 1124 1125 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1126 /* 1127 * sysctl helper routine for kern.sysvipc_info subtree. 1128 */ 1129 1130 #define FILL_PERM(src, dst) do { \ 1131 (dst)._key = (src)._key; \ 1132 (dst).uid = (src).uid; \ 1133 (dst).gid = (src).gid; \ 1134 (dst).cuid = (src).cuid; \ 1135 (dst).cgid = (src).cgid; \ 1136 (dst).mode = (src).mode; \ 1137 (dst)._seq = (src)._seq; \ 1138 } while (/*CONSTCOND*/ 0); 1139 #define FILL_MSG(src, dst) do { \ 1140 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1141 (dst).msg_qnum = (src).msg_qnum; \ 1142 (dst).msg_qbytes = (src).msg_qbytes; \ 1143 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1144 (dst).msg_lspid = (src).msg_lspid; \ 1145 (dst).msg_lrpid = (src).msg_lrpid; \ 1146 (dst).msg_stime = (src).msg_stime; \ 1147 (dst).msg_rtime = (src).msg_rtime; \ 1148 (dst).msg_ctime = (src).msg_ctime; \ 1149 } while (/*CONSTCOND*/ 0) 1150 #define FILL_SEM(src, dst) do { \ 1151 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1152 (dst).sem_nsems = (src).sem_nsems; \ 1153 (dst).sem_otime = (src).sem_otime; \ 1154 (dst).sem_ctime = (src).sem_ctime; \ 1155 } while (/*CONSTCOND*/ 0) 1156 #define FILL_SHM(src, dst) do { \ 1157 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1158 (dst).shm_segsz = (src).shm_segsz; \ 1159 (dst).shm_lpid = (src).shm_lpid; \ 1160 (dst).shm_cpid = (src).shm_cpid; \ 1161 (dst).shm_atime = (src).shm_atime; \ 1162 (dst).shm_dtime = (src).shm_dtime; \ 1163 (dst).shm_ctime = (src).shm_ctime; \ 1164 (dst).shm_nattch = (src).shm_nattch; \ 1165 } while (/*CONSTCOND*/ 0) 1166 1167 static int 1168 sysctl_kern_sysvipc(SYSCTLFN_ARGS) 1169 { 1170 void *where = oldp; 1171 size_t *sizep = oldlenp; 1172 #ifdef SYSVMSG 1173 struct msg_sysctl_info *msgsi = NULL; 1174 #endif 1175 #ifdef SYSVSEM 1176 struct sem_sysctl_info *semsi = NULL; 1177 #endif 1178 #ifdef SYSVSHM 1179 struct shm_sysctl_info *shmsi = NULL; 1180 #endif 1181 size_t infosize, dssize, tsize, buflen; 1182 void *buf = NULL; 1183 char *start; 1184 int32_t nds; 1185 int i, error, ret; 1186 1187 if (namelen != 1) 1188 return (EINVAL); 1189 1190 start = where; 1191 buflen = *sizep; 1192 1193 switch (*name) { 1194 case KERN_SYSVIPC_MSG_INFO: 1195 #ifdef SYSVMSG 1196 infosize = sizeof(msgsi->msginfo); 1197 nds = msginfo.msgmni; 1198 dssize = sizeof(msgsi->msgids[0]); 1199 break; 1200 #else 1201 return (EINVAL); 1202 #endif 1203 case KERN_SYSVIPC_SEM_INFO: 1204 #ifdef SYSVSEM 1205 infosize = sizeof(semsi->seminfo); 1206 nds = seminfo.semmni; 1207 dssize = sizeof(semsi->semids[0]); 1208 break; 1209 #else 1210 return (EINVAL); 1211 #endif 1212 case KERN_SYSVIPC_SHM_INFO: 1213 #ifdef SYSVSHM 1214 infosize = sizeof(shmsi->shminfo); 1215 nds = shminfo.shmmni; 1216 dssize = sizeof(shmsi->shmids[0]); 1217 break; 1218 #else 1219 return (EINVAL); 1220 #endif 1221 default: 1222 return (EINVAL); 1223 } 1224 /* 1225 * Round infosize to 64 bit boundary if requesting more than just 1226 * the info structure or getting the total data size. 1227 */ 1228 if (where == NULL || *sizep > infosize) 1229 infosize = ((infosize + 7) / 8) * 8; 1230 tsize = infosize + nds * dssize; 1231 1232 /* Return just the total size required. */ 1233 if (where == NULL) { 1234 *sizep = tsize; 1235 return (0); 1236 } 1237 1238 /* Not enough room for even the info struct. */ 1239 if (buflen < infosize) { 1240 *sizep = 0; 1241 return (ENOMEM); 1242 } 1243 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1244 memset(buf, 0, min(tsize, buflen)); 1245 1246 switch (*name) { 1247 #ifdef SYSVMSG 1248 case KERN_SYSVIPC_MSG_INFO: 1249 msgsi = (struct msg_sysctl_info *)buf; 1250 msgsi->msginfo = msginfo; 1251 break; 1252 #endif 1253 #ifdef SYSVSEM 1254 case KERN_SYSVIPC_SEM_INFO: 1255 semsi = (struct sem_sysctl_info *)buf; 1256 semsi->seminfo = seminfo; 1257 break; 1258 #endif 1259 #ifdef SYSVSHM 1260 case KERN_SYSVIPC_SHM_INFO: 1261 shmsi = (struct shm_sysctl_info *)buf; 1262 shmsi->shminfo = shminfo; 1263 break; 1264 #endif 1265 } 1266 buflen -= infosize; 1267 1268 ret = 0; 1269 if (buflen > 0) { 1270 /* Fill in the IPC data structures. */ 1271 for (i = 0; i < nds; i++) { 1272 if (buflen < dssize) { 1273 ret = ENOMEM; 1274 break; 1275 } 1276 switch (*name) { 1277 #ifdef SYSVMSG 1278 case KERN_SYSVIPC_MSG_INFO: 1279 FILL_MSG(msqids[i], msgsi->msgids[i]); 1280 break; 1281 #endif 1282 #ifdef SYSVSEM 1283 case KERN_SYSVIPC_SEM_INFO: 1284 FILL_SEM(sema[i], semsi->semids[i]); 1285 break; 1286 #endif 1287 #ifdef SYSVSHM 1288 case KERN_SYSVIPC_SHM_INFO: 1289 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1290 break; 1291 #endif 1292 } 1293 buflen -= dssize; 1294 } 1295 } 1296 *sizep -= buflen; 1297 error = copyout(buf, start, *sizep); 1298 /* If copyout succeeded, use return code set earlier. */ 1299 if (error == 0) 1300 error = ret; 1301 if (buf) 1302 free(buf, M_TEMP); 1303 return (error); 1304 } 1305 1306 #undef FILL_PERM 1307 #undef FILL_MSG 1308 #undef FILL_SEM 1309 #undef FILL_SHM 1310 1311 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 1312 1313 #if NPTY > 0 1314 /* 1315 * sysctl helper routine for kern.maxptys. ensures that any new value 1316 * is acceptable to the pty subsystem. 1317 */ 1318 static int 1319 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1320 { 1321 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1322 int error, max; 1323 struct sysctlnode node; 1324 1325 /* get current value of maxptys */ 1326 max = pty_maxptys(0, 0); 1327 1328 node = *rnode; 1329 node.sysctl_data = &max; 1330 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1331 if (error || newp == NULL) 1332 return (error); 1333 1334 if (max != pty_maxptys(max, 1)) 1335 return (EINVAL); 1336 1337 return (0); 1338 } 1339 #endif /* NPTY > 0 */ 1340 1341 /* 1342 * sysctl helper routine for kern.sbmax. basically just ensures that 1343 * any new value is not too small. 1344 */ 1345 static int 1346 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1347 { 1348 int error, new_sbmax; 1349 struct sysctlnode node; 1350 1351 new_sbmax = sb_max; 1352 node = *rnode; 1353 node.sysctl_data = &new_sbmax; 1354 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1355 if (error || newp == NULL) 1356 return (error); 1357 1358 error = sb_max_set(new_sbmax); 1359 1360 return (error); 1361 } 1362 1363 /* 1364 * sysctl helper routine for kern.urandom node. picks a random number 1365 * for you. 1366 */ 1367 static int 1368 sysctl_kern_urnd(SYSCTLFN_ARGS) 1369 { 1370 #if NRND > 0 1371 int v; 1372 1373 if (rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY) == sizeof(v)) { 1374 struct sysctlnode node = *rnode; 1375 node.sysctl_data = &v; 1376 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1377 } 1378 else 1379 return (EIO); /*XXX*/ 1380 #else 1381 return (EOPNOTSUPP); 1382 #endif 1383 } 1384 1385 /* 1386 * sysctl helper routine to do kern.lwp.* work. 1387 */ 1388 static int 1389 sysctl_kern_lwp(SYSCTLFN_ARGS) 1390 { 1391 struct kinfo_lwp klwp; 1392 struct proc *p; 1393 struct lwp *l2; 1394 char *where, *dp; 1395 int pid, elem_size, elem_count; 1396 int buflen, needed, error; 1397 1398 dp = where = oldp; 1399 buflen = where != NULL ? *oldlenp : 0; 1400 error = needed = 0; 1401 1402 if (newp != NULL || namelen != 4) 1403 return (EINVAL); 1404 pid = name[1]; 1405 elem_size = name[2]; 1406 elem_count = name[3]; 1407 1408 p = pfind(pid); 1409 if (p == NULL) 1410 return (ESRCH); 1411 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1412 if (buflen >= elem_size && elem_count > 0) { 1413 fill_lwp(l2, &klwp); 1414 /* 1415 * Copy out elem_size, but not larger than 1416 * the size of a struct kinfo_proc2. 1417 */ 1418 error = copyout(&klwp, dp, 1419 min(sizeof(klwp), elem_size)); 1420 if (error) 1421 goto cleanup; 1422 dp += elem_size; 1423 buflen -= elem_size; 1424 elem_count--; 1425 } 1426 needed += elem_size; 1427 } 1428 1429 if (where != NULL) { 1430 *oldlenp = dp - where; 1431 if (needed > *oldlenp) 1432 return (ENOMEM); 1433 } else { 1434 needed += KERN_PROCSLOP; 1435 *oldlenp = needed; 1436 } 1437 return (0); 1438 cleanup: 1439 return (error); 1440 } 1441 1442 /* 1443 * sysctl helper routine for kern.forkfsleep node. ensures that the 1444 * given value is not too large or two small, and is at least one 1445 * timer tick if not zero. 1446 */ 1447 static int 1448 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1449 { 1450 /* userland sees value in ms, internally is in ticks */ 1451 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1452 int error, timo, lsleep; 1453 struct sysctlnode node; 1454 1455 lsleep = forkfsleep * 1000 / hz; 1456 node = *rnode; 1457 node.sysctl_data = &lsleep; 1458 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1459 if (error || newp == NULL) 1460 return (error); 1461 1462 /* refuse negative values, and overly 'long time' */ 1463 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1464 return (EINVAL); 1465 1466 timo = mstohz(lsleep); 1467 1468 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1469 if (lsleep != 0 && timo == 0) 1470 forkfsleep = 1; 1471 else 1472 forkfsleep = timo; 1473 1474 return (0); 1475 } 1476 1477 /* 1478 * sysctl helper routine for kern.somaxkva. ensures that the given 1479 * value is not too small. 1480 * (XXX should we maybe make sure it's not too large as well?) 1481 */ 1482 static int 1483 sysctl_kern_somaxkva(SYSCTLFN_ARGS) 1484 { 1485 int error, new_somaxkva; 1486 struct sysctlnode node; 1487 1488 new_somaxkva = somaxkva; 1489 node = *rnode; 1490 node.sysctl_data = &new_somaxkva; 1491 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1492 if (error || newp == NULL) 1493 return (error); 1494 1495 if (new_somaxkva < (16 * 1024 * 1024)) /* sanity */ 1496 return (EINVAL); 1497 somaxkva = new_somaxkva; 1498 1499 return (error); 1500 } 1501 1502 /* 1503 * sysctl helper routine for kern.root_partition 1504 */ 1505 static int 1506 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1507 { 1508 int rootpart = DISKPART(rootdev); 1509 struct sysctlnode node = *rnode; 1510 1511 node.sysctl_data = &rootpart; 1512 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1513 } 1514 1515 /* 1516 * sysctl helper function for kern.drivers 1517 */ 1518 static int 1519 sysctl_kern_drivers(SYSCTLFN_ARGS) 1520 { 1521 int error; 1522 size_t buflen; 1523 struct kinfo_drivers kd; 1524 char *start, *where; 1525 const char *dname; 1526 int i; 1527 extern struct devsw_conv *devsw_conv; 1528 extern int max_devsw_convs; 1529 1530 if (newp != NULL || namelen != 0) 1531 return (EINVAL); 1532 1533 start = where = oldp; 1534 buflen = *oldlenp; 1535 if (where == NULL) { 1536 *oldlenp = max_devsw_convs * sizeof kd; 1537 return 0; 1538 } 1539 1540 /* 1541 * An array of kinfo_drivers structures 1542 */ 1543 error = 0; 1544 for (i = 0; i < max_devsw_convs; i++) { 1545 dname = devsw_conv[i].d_name; 1546 if (dname == NULL) 1547 continue; 1548 if (buflen < sizeof kd) { 1549 error = ENOMEM; 1550 break; 1551 } 1552 kd.d_bmajor = devsw_conv[i].d_bmajor; 1553 kd.d_cmajor = devsw_conv[i].d_cmajor; 1554 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1555 error = copyout(&kd, where, sizeof kd); 1556 if (error != 0) 1557 break; 1558 buflen -= sizeof kd; 1559 where += sizeof kd; 1560 } 1561 *oldlenp = where - start; 1562 return error; 1563 } 1564 1565 static int 1566 sysctl_doeproc(SYSCTLFN_ARGS) 1567 { 1568 struct eproc eproc; 1569 struct kinfo_proc2 kproc2; 1570 struct kinfo_proc *dp; 1571 struct proc *p; 1572 const struct proclist_desc *pd; 1573 char *where, *dp2; 1574 int type, op, arg; 1575 u_int elem_size, elem_count; 1576 size_t buflen, needed; 1577 int error; 1578 1579 dp = oldp; 1580 dp2 = where = oldp; 1581 buflen = where != NULL ? *oldlenp : 0; 1582 error = 0; 1583 needed = 0; 1584 type = rnode->sysctl_num; 1585 1586 if (type == KERN_PROC) { 1587 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 1588 return (EINVAL); 1589 op = name[0]; 1590 if (op != KERN_PROC_ALL) 1591 arg = name[1]; 1592 else 1593 arg = 0; /* Quell compiler warning */ 1594 elem_size = elem_count = 0; /* Ditto */ 1595 } else { 1596 if (namelen != 4) 1597 return (EINVAL); 1598 op = name[0]; 1599 arg = name[1]; 1600 elem_size = name[2]; 1601 elem_count = name[3]; 1602 } 1603 1604 proclist_lock_read(); 1605 1606 pd = proclists; 1607 again: 1608 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1609 /* 1610 * Skip embryonic processes. 1611 */ 1612 if (p->p_stat == SIDL) 1613 continue; 1614 /* 1615 * TODO - make more efficient (see notes below). 1616 * do by session. 1617 */ 1618 switch (op) { 1619 1620 case KERN_PROC_PID: 1621 /* could do this with just a lookup */ 1622 if (p->p_pid != (pid_t)arg) 1623 continue; 1624 break; 1625 1626 case KERN_PROC_PGRP: 1627 /* could do this by traversing pgrp */ 1628 if (p->p_pgrp->pg_id != (pid_t)arg) 1629 continue; 1630 break; 1631 1632 case KERN_PROC_SESSION: 1633 if (p->p_session->s_sid != (pid_t)arg) 1634 continue; 1635 break; 1636 1637 case KERN_PROC_TTY: 1638 if (arg == (int) KERN_PROC_TTY_REVOKE) { 1639 if ((p->p_flag & P_CONTROLT) == 0 || 1640 p->p_session->s_ttyp == NULL || 1641 p->p_session->s_ttyvp != NULL) 1642 continue; 1643 } else if ((p->p_flag & P_CONTROLT) == 0 || 1644 p->p_session->s_ttyp == NULL) { 1645 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1646 continue; 1647 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1648 continue; 1649 break; 1650 1651 case KERN_PROC_UID: 1652 if (p->p_ucred->cr_uid != (uid_t)arg) 1653 continue; 1654 break; 1655 1656 case KERN_PROC_RUID: 1657 if (p->p_cred->p_ruid != (uid_t)arg) 1658 continue; 1659 break; 1660 1661 case KERN_PROC_GID: 1662 if (p->p_ucred->cr_gid != (uid_t)arg) 1663 continue; 1664 break; 1665 1666 case KERN_PROC_RGID: 1667 if (p->p_cred->p_rgid != (uid_t)arg) 1668 continue; 1669 break; 1670 1671 case KERN_PROC_ALL: 1672 /* allow everything */ 1673 break; 1674 1675 default: 1676 error = EINVAL; 1677 goto cleanup; 1678 } 1679 if (type == KERN_PROC) { 1680 if (buflen >= sizeof(struct kinfo_proc)) { 1681 fill_eproc(p, &eproc); 1682 error = copyout(p, &dp->kp_proc, 1683 sizeof(struct proc)); 1684 if (error) 1685 goto cleanup; 1686 error = copyout(&eproc, &dp->kp_eproc, 1687 sizeof(eproc)); 1688 if (error) 1689 goto cleanup; 1690 dp++; 1691 buflen -= sizeof(struct kinfo_proc); 1692 } 1693 needed += sizeof(struct kinfo_proc); 1694 } else { /* KERN_PROC2 */ 1695 if (buflen >= elem_size && elem_count > 0) { 1696 fill_kproc2(p, &kproc2); 1697 /* 1698 * Copy out elem_size, but not larger than 1699 * the size of a struct kinfo_proc2. 1700 */ 1701 error = copyout(&kproc2, dp2, 1702 min(sizeof(kproc2), elem_size)); 1703 if (error) 1704 goto cleanup; 1705 dp2 += elem_size; 1706 buflen -= elem_size; 1707 elem_count--; 1708 } 1709 needed += elem_size; 1710 } 1711 } 1712 pd++; 1713 if (pd->pd_list != NULL) 1714 goto again; 1715 proclist_unlock_read(); 1716 1717 if (where != NULL) { 1718 if (type == KERN_PROC) 1719 *oldlenp = (char *)dp - where; 1720 else 1721 *oldlenp = dp2 - where; 1722 if (needed > *oldlenp) 1723 return (ENOMEM); 1724 } else { 1725 needed += KERN_PROCSLOP; 1726 *oldlenp = needed; 1727 } 1728 return (0); 1729 cleanup: 1730 proclist_unlock_read(); 1731 return (error); 1732 } 1733 1734 /* 1735 * sysctl helper routine for kern.proc_args pseudo-subtree. 1736 */ 1737 static int 1738 sysctl_kern_proc_args(SYSCTLFN_ARGS) 1739 { 1740 struct ps_strings pss; 1741 struct proc *p, *up = l->l_proc; 1742 size_t len, upper_bound, xlen, i; 1743 struct uio auio; 1744 struct iovec aiov; 1745 vaddr_t argv; 1746 pid_t pid; 1747 int nargv, type, error; 1748 char *arg; 1749 char *tmp; 1750 1751 if (newp != NULL || namelen != 2) 1752 return (EINVAL); 1753 pid = name[0]; 1754 type = name[1]; 1755 1756 switch (type) { 1757 case KERN_PROC_ARGV: 1758 case KERN_PROC_NARGV: 1759 case KERN_PROC_ENV: 1760 case KERN_PROC_NENV: 1761 /* ok */ 1762 break; 1763 default: 1764 return (EINVAL); 1765 } 1766 1767 /* check pid */ 1768 if ((p = pfind(pid)) == NULL) 1769 return (EINVAL); 1770 1771 /* only root or same user change look at the environment */ 1772 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1773 if (up->p_ucred->cr_uid != 0) { 1774 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1775 up->p_cred->p_ruid != p->p_cred->p_svuid) 1776 return (EPERM); 1777 } 1778 } 1779 1780 if (oldp == NULL) { 1781 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1782 *oldlenp = sizeof (int); 1783 else 1784 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 1785 return (0); 1786 } 1787 1788 /* 1789 * Zombies don't have a stack, so we can't read their psstrings. 1790 * System processes also don't have a user stack. 1791 */ 1792 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1793 return (EINVAL); 1794 1795 /* 1796 * Lock the process down in memory. 1797 */ 1798 /* XXXCDC: how should locking work here? */ 1799 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1800 return (EFAULT); 1801 1802 p->p_vmspace->vm_refcnt++; /* XXX */ 1803 1804 /* 1805 * Allocate a temporary buffer to hold the arguments. 1806 */ 1807 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1808 1809 /* 1810 * Read in the ps_strings structure. 1811 */ 1812 aiov.iov_base = &pss; 1813 aiov.iov_len = sizeof(pss); 1814 auio.uio_iov = &aiov; 1815 auio.uio_iovcnt = 1; 1816 auio.uio_offset = (vaddr_t)p->p_psstr; 1817 auio.uio_resid = sizeof(pss); 1818 auio.uio_segflg = UIO_SYSSPACE; 1819 auio.uio_rw = UIO_READ; 1820 auio.uio_procp = NULL; 1821 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1822 if (error) 1823 goto done; 1824 1825 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1826 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1827 else 1828 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1829 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1830 error = copyout(&nargv, oldp, sizeof(nargv)); 1831 *oldlenp = sizeof(nargv); 1832 goto done; 1833 } 1834 /* 1835 * Now read the address of the argument vector. 1836 */ 1837 switch (type) { 1838 case KERN_PROC_ARGV: 1839 /* XXX compat32 stuff here */ 1840 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1841 break; 1842 case KERN_PROC_ENV: 1843 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1844 break; 1845 default: 1846 return (EINVAL); 1847 } 1848 auio.uio_offset = (off_t)(long)tmp; 1849 aiov.iov_base = &argv; 1850 aiov.iov_len = sizeof(argv); 1851 auio.uio_iov = &aiov; 1852 auio.uio_iovcnt = 1; 1853 auio.uio_resid = sizeof(argv); 1854 auio.uio_segflg = UIO_SYSSPACE; 1855 auio.uio_rw = UIO_READ; 1856 auio.uio_procp = NULL; 1857 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1858 if (error) 1859 goto done; 1860 1861 /* 1862 * Now copy in the actual argument vector, one page at a time, 1863 * since we don't know how long the vector is (though, we do 1864 * know how many NUL-terminated strings are in the vector). 1865 */ 1866 len = 0; 1867 upper_bound = *oldlenp; 1868 for (; nargv != 0 && len < upper_bound; len += xlen) { 1869 aiov.iov_base = arg; 1870 aiov.iov_len = PAGE_SIZE; 1871 auio.uio_iov = &aiov; 1872 auio.uio_iovcnt = 1; 1873 auio.uio_offset = argv + len; 1874 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1875 auio.uio_resid = xlen; 1876 auio.uio_segflg = UIO_SYSSPACE; 1877 auio.uio_rw = UIO_READ; 1878 auio.uio_procp = NULL; 1879 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1880 if (error) 1881 goto done; 1882 1883 for (i = 0; i < xlen && nargv != 0; i++) { 1884 if (arg[i] == '\0') 1885 nargv--; /* one full string */ 1886 } 1887 1888 /* 1889 * Make sure we don't copyout past the end of the user's 1890 * buffer. 1891 */ 1892 if (len + i > upper_bound) 1893 i = upper_bound - len; 1894 1895 error = copyout(arg, (char *)oldp + len, i); 1896 if (error) 1897 break; 1898 1899 if (nargv == 0) { 1900 len += i; 1901 break; 1902 } 1903 } 1904 *oldlenp = len; 1905 1906 done: 1907 uvmspace_free(p->p_vmspace); 1908 1909 free(arg, M_TEMP); 1910 return (error); 1911 } 1912 1913 /* 1914 * sysctl helper routine for hw.usermem and hw.usermem64. values are 1915 * calculate on the fly taking into account integer overflow and the 1916 * current wired count. 1917 */ 1918 static int 1919 sysctl_hw_usermem(SYSCTLFN_ARGS) 1920 { 1921 u_int ui; 1922 u_quad_t uq; 1923 struct sysctlnode node; 1924 1925 node = *rnode; 1926 switch (rnode->sysctl_num) { 1927 case HW_USERMEM: 1928 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1929 ui = UINT_MAX; 1930 else 1931 ui *= PAGE_SIZE; 1932 node.sysctl_data = &ui; 1933 break; 1934 case HW_USERMEM64: 1935 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1936 node.sysctl_data = &uq; 1937 break; 1938 default: 1939 return (EINVAL); 1940 } 1941 1942 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1943 } 1944 1945 /* 1946 * sysctl helper routine for kern.cnmagic node. pulls the old value 1947 * out, encoded, and stuffs the new value in for decoding. 1948 */ 1949 static int 1950 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 1951 { 1952 char magic[CNS_LEN]; 1953 int error; 1954 struct sysctlnode node; 1955 1956 if (oldp) 1957 cn_get_magic(magic, CNS_LEN); 1958 node = *rnode; 1959 node.sysctl_data = &magic[0]; 1960 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1961 if (error || newp == NULL) 1962 return (error); 1963 1964 return (cn_set_magic(magic)); 1965 } 1966 1967 static int 1968 sysctl_hw_ncpu(SYSCTLFN_ARGS) 1969 { 1970 int ncpu; 1971 struct sysctlnode node; 1972 1973 ncpu = sysctl_ncpus(); 1974 node = *rnode; 1975 node.sysctl_data = &ncpu; 1976 1977 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1978 } 1979 1980 1981 /* 1982 * ******************************************************************** 1983 * section 3: public helper routines that are used for more than one 1984 * node 1985 * ******************************************************************** 1986 */ 1987 1988 /* 1989 * sysctl helper routine for the kern.root_device node and some ports' 1990 * machdep.root_device nodes. 1991 */ 1992 int 1993 sysctl_root_device(SYSCTLFN_ARGS) 1994 { 1995 struct sysctlnode node; 1996 1997 node = *rnode; 1998 node.sysctl_data = root_device->dv_xname; 1999 node.sysctl_size = strlen(root_device->dv_xname) + 1; 2000 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2001 } 2002 2003 /* 2004 * sysctl helper routine for kern.consdev, dependent on the current 2005 * state of the console. also used for machdep.console_device on some 2006 * ports. 2007 */ 2008 int 2009 sysctl_consdev(SYSCTLFN_ARGS) 2010 { 2011 dev_t consdev; 2012 struct sysctlnode node; 2013 2014 if (cn_tab != NULL) 2015 consdev = cn_tab->cn_dev; 2016 else 2017 consdev = NODEV; 2018 node = *rnode; 2019 node.sysctl_data = &consdev; 2020 node.sysctl_size = sizeof(consdev); 2021 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2022 } 2023 2024 /* 2025 * ******************************************************************** 2026 * section 4: support for some helpers 2027 * ******************************************************************** 2028 */ 2029 2030 /* 2031 * Fill in a kinfo_proc2 structure for the specified process. 2032 */ 2033 static void 2034 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 2035 { 2036 struct tty *tp; 2037 struct lwp *l; 2038 struct timeval ut, st; 2039 2040 memset(ki, 0, sizeof(*ki)); 2041 2042 ki->p_paddr = PTRTOINT64(p); 2043 ki->p_fd = PTRTOINT64(p->p_fd); 2044 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 2045 ki->p_stats = PTRTOINT64(p->p_stats); 2046 ki->p_limit = PTRTOINT64(p->p_limit); 2047 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 2048 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 2049 ki->p_sess = PTRTOINT64(p->p_session); 2050 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2051 ki->p_ru = PTRTOINT64(p->p_ru); 2052 2053 ki->p_eflag = 0; 2054 ki->p_exitsig = p->p_exitsig; 2055 ki->p_flag = p->p_flag; 2056 2057 ki->p_pid = p->p_pid; 2058 if (p->p_pptr) 2059 ki->p_ppid = p->p_pptr->p_pid; 2060 else 2061 ki->p_ppid = 0; 2062 ki->p_sid = p->p_session->s_sid; 2063 ki->p__pgid = p->p_pgrp->pg_id; 2064 2065 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2066 2067 ki->p_uid = p->p_ucred->cr_uid; 2068 ki->p_ruid = p->p_cred->p_ruid; 2069 ki->p_gid = p->p_ucred->cr_gid; 2070 ki->p_rgid = p->p_cred->p_rgid; 2071 ki->p_svuid = p->p_cred->p_svuid; 2072 ki->p_svgid = p->p_cred->p_svgid; 2073 2074 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 2075 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 2076 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 2077 2078 ki->p_jobc = p->p_pgrp->pg_jobc; 2079 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 2080 ki->p_tdev = tp->t_dev; 2081 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2082 ki->p_tsess = PTRTOINT64(tp->t_session); 2083 } else { 2084 ki->p_tdev = NODEV; 2085 } 2086 2087 ki->p_estcpu = p->p_estcpu; 2088 ki->p_rtime_sec = p->p_rtime.tv_sec; 2089 ki->p_rtime_usec = p->p_rtime.tv_usec; 2090 ki->p_cpticks = p->p_cpticks; 2091 ki->p_pctcpu = p->p_pctcpu; 2092 2093 ki->p_uticks = p->p_uticks; 2094 ki->p_sticks = p->p_sticks; 2095 ki->p_iticks = p->p_iticks; 2096 2097 ki->p_tracep = PTRTOINT64(p->p_tracep); 2098 ki->p_traceflag = p->p_traceflag; 2099 2100 2101 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 2102 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 2103 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2104 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2105 2106 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2107 ki->p_realstat = p->p_stat; 2108 ki->p_nice = p->p_nice; 2109 2110 ki->p_xstat = p->p_xstat; 2111 ki->p_acflag = p->p_acflag; 2112 2113 strncpy(ki->p_comm, p->p_comm, 2114 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2115 2116 strncpy(ki->p_login, p->p_session->s_login, 2117 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 2118 2119 ki->p_nlwps = p->p_nlwps; 2120 ki->p_nrlwps = p->p_nrlwps; 2121 ki->p_realflag = p->p_flag; 2122 2123 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2124 ki->p_vm_rssize = 0; 2125 ki->p_vm_tsize = 0; 2126 ki->p_vm_dsize = 0; 2127 ki->p_vm_ssize = 0; 2128 l = NULL; 2129 } else { 2130 struct vmspace *vm = p->p_vmspace; 2131 2132 ki->p_vm_rssize = vm_resident_count(vm); 2133 ki->p_vm_tsize = vm->vm_tsize; 2134 ki->p_vm_dsize = vm->vm_dsize; 2135 ki->p_vm_ssize = vm->vm_ssize; 2136 2137 /* Pick a "representative" LWP */ 2138 l = proc_representative_lwp(p); 2139 ki->p_forw = PTRTOINT64(l->l_forw); 2140 ki->p_back = PTRTOINT64(l->l_back); 2141 ki->p_addr = PTRTOINT64(l->l_addr); 2142 ki->p_stat = l->l_stat; 2143 ki->p_flag |= l->l_flag; 2144 ki->p_swtime = l->l_swtime; 2145 ki->p_slptime = l->l_slptime; 2146 if (l->l_stat == LSONPROC) { 2147 KDASSERT(l->l_cpu != NULL); 2148 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2149 } else 2150 ki->p_schedflags = 0; 2151 ki->p_holdcnt = l->l_holdcnt; 2152 ki->p_priority = l->l_priority; 2153 ki->p_usrpri = l->l_usrpri; 2154 if (l->l_wmesg) 2155 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 2156 ki->p_wchan = PTRTOINT64(l->l_wchan); 2157 2158 } 2159 2160 if (p->p_session->s_ttyvp) 2161 ki->p_eflag |= EPROC_CTTY; 2162 if (SESS_LEADER(p)) 2163 ki->p_eflag |= EPROC_SLEADER; 2164 2165 /* XXX Is this double check necessary? */ 2166 if (P_ZOMBIE(p)) { 2167 ki->p_uvalid = 0; 2168 } else { 2169 ki->p_uvalid = 1; 2170 2171 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 2172 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 2173 2174 calcru(p, &ut, &st, 0); 2175 ki->p_uutime_sec = ut.tv_sec; 2176 ki->p_uutime_usec = ut.tv_usec; 2177 ki->p_ustime_sec = st.tv_sec; 2178 ki->p_ustime_usec = st.tv_usec; 2179 2180 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 2181 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 2182 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 2183 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 2184 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 2185 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 2186 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 2187 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 2188 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 2189 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 2190 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 2191 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 2192 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 2193 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 2194 2195 timeradd(&p->p_stats->p_cru.ru_utime, 2196 &p->p_stats->p_cru.ru_stime, &ut); 2197 ki->p_uctime_sec = ut.tv_sec; 2198 ki->p_uctime_usec = ut.tv_usec; 2199 } 2200 #ifdef MULTIPROCESSOR 2201 if (l && l->l_cpu != NULL) 2202 ki->p_cpuid = l->l_cpu->ci_cpuid; 2203 else 2204 #endif 2205 ki->p_cpuid = KI_NOCPU; 2206 } 2207 2208 /* 2209 * Fill in a kinfo_lwp structure for the specified lwp. 2210 */ 2211 static void 2212 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 2213 { 2214 2215 kl->l_forw = PTRTOINT64(l->l_forw); 2216 kl->l_back = PTRTOINT64(l->l_back); 2217 kl->l_laddr = PTRTOINT64(l); 2218 kl->l_addr = PTRTOINT64(l->l_addr); 2219 kl->l_stat = l->l_stat; 2220 kl->l_lid = l->l_lid; 2221 kl->l_flag = l->l_flag; 2222 2223 kl->l_swtime = l->l_swtime; 2224 kl->l_slptime = l->l_slptime; 2225 if (l->l_stat == LSONPROC) { 2226 KDASSERT(l->l_cpu != NULL); 2227 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2228 } else 2229 kl->l_schedflags = 0; 2230 kl->l_holdcnt = l->l_holdcnt; 2231 kl->l_priority = l->l_priority; 2232 kl->l_usrpri = l->l_usrpri; 2233 if (l->l_wmesg) 2234 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 2235 kl->l_wchan = PTRTOINT64(l->l_wchan); 2236 #ifdef MULTIPROCESSOR 2237 if (l->l_cpu != NULL) 2238 kl->l_cpuid = l->l_cpu->ci_cpuid; 2239 else 2240 #endif 2241 kl->l_cpuid = KI_NOCPU; 2242 } 2243 2244 /* 2245 * Fill in an eproc structure for the specified process. 2246 */ 2247 void 2248 fill_eproc(struct proc *p, struct eproc *ep) 2249 { 2250 struct tty *tp; 2251 struct lwp *l; 2252 2253 ep->e_paddr = p; 2254 ep->e_sess = p->p_session; 2255 ep->e_pcred = *p->p_cred; 2256 ep->e_ucred = *p->p_ucred; 2257 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2258 ep->e_vm.vm_rssize = 0; 2259 ep->e_vm.vm_tsize = 0; 2260 ep->e_vm.vm_dsize = 0; 2261 ep->e_vm.vm_ssize = 0; 2262 /* ep->e_vm.vm_pmap = XXX; */ 2263 } else { 2264 struct vmspace *vm = p->p_vmspace; 2265 2266 ep->e_vm.vm_rssize = vm_resident_count(vm); 2267 ep->e_vm.vm_tsize = vm->vm_tsize; 2268 ep->e_vm.vm_dsize = vm->vm_dsize; 2269 ep->e_vm.vm_ssize = vm->vm_ssize; 2270 2271 /* Pick a "representative" LWP */ 2272 l = proc_representative_lwp(p); 2273 2274 if (l->l_wmesg) 2275 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 2276 } 2277 if (p->p_pptr) 2278 ep->e_ppid = p->p_pptr->p_pid; 2279 else 2280 ep->e_ppid = 0; 2281 ep->e_pgid = p->p_pgrp->pg_id; 2282 ep->e_sid = ep->e_sess->s_sid; 2283 ep->e_jobc = p->p_pgrp->pg_jobc; 2284 if ((p->p_flag & P_CONTROLT) && 2285 (tp = ep->e_sess->s_ttyp)) { 2286 ep->e_tdev = tp->t_dev; 2287 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2288 ep->e_tsess = tp->t_session; 2289 } else 2290 ep->e_tdev = NODEV; 2291 2292 ep->e_xsize = ep->e_xrssize = 0; 2293 ep->e_xccount = ep->e_xswrss = 0; 2294 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 2295 if (SESS_LEADER(p)) 2296 ep->e_flag |= EPROC_SLEADER; 2297 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 2298 } 2299
Indexes created Wed Oct 01 15:09:59 GMT 2025