init_sysctl.c revision 1.13
1 /* $NetBSD: init_sysctl.c,v 1.13 2003/12/20 07:33:03 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Brown. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include "opt_sysv.h" 40 #include "opt_multiprocessor.h" 41 #include "opt_posix.h" 42 #include "pty.h" 43 #include "rnd.h" 44 45 #include <sys/types.h> 46 #include <sys/param.h> 47 #include <sys/sysctl.h> 48 #include <sys/errno.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/unistd.h> 52 #include <sys/disklabel.h> 53 #include <sys/rnd.h> 54 #include <sys/vnode.h> 55 #include <sys/mount.h> 56 #include <sys/namei.h> 57 #include <sys/msgbuf.h> 58 #include <dev/cons.h> 59 #include <sys/socketvar.h> 60 #include <sys/file.h> 61 #include <sys/tty.h> 62 #include <sys/malloc.h> 63 #include <sys/resource.h> 64 #include <sys/resourcevar.h> 65 #include <sys/exec.h> 66 #include <sys/conf.h> 67 #include <sys/device.h> 68 69 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 70 #include <sys/ipc.h> 71 #endif 72 #ifdef SYSVMSG 73 #include <sys/msg.h> 74 #endif 75 #ifdef SYSVSEM 76 #include <sys/sem.h> 77 #endif 78 #ifdef SYSVSHM 79 #include <sys/shm.h> 80 #endif 81 82 #include <machine/cpu.h> 83 84 /* 85 * try over estimating by 5 procs/lwps 86 */ 87 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 88 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 89 90 /* 91 * convert pointer to 64 int for struct kinfo_proc2 92 */ 93 #define PTRTOINT64(foo) ((u_int64_t)(uintptr_t)(foo)) 94 95 #ifndef MULTIPROCESSOR 96 #define sysctl_ncpus() (1) 97 #else /* MULTIPROCESSOR */ 98 #ifndef CPU_INFO_FOREACH 99 #define CPU_INFO_ITERATOR int 100 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 101 #endif 102 static int 103 sysctl_ncpus(void) 104 { 105 struct cpu_info *ci; 106 CPU_INFO_ITERATOR cii; 107 108 int ncpus = 0; 109 for (CPU_INFO_FOREACH(cii, ci)) 110 ncpus++; 111 return (ncpus); 112 } 113 #endif /* MULTIPROCESSOR */ 114 115 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 116 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 117 static int sysctl_kern_securelevel(SYSCTLFN_PROTO); 118 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 119 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 120 static int sysctl_kern_file(SYSCTLFN_PROTO); 121 static int sysctl_kern_autonice(SYSCTLFN_PROTO); 122 static int sysctl_msgbuf(SYSCTLFN_PROTO); 123 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 124 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 125 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 126 static int sysctl_kern_sysvipc(SYSCTLFN_PROTO); 127 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 128 #if NPTY > 0 129 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 130 #endif /* NPTY > 0 */ 131 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 132 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 133 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 134 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 135 static int sysctl_kern_somaxkva(SYSCTLFN_PROTO); 136 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 137 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 138 static int sysctl_doeproc(SYSCTLFN_PROTO); 139 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 140 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 141 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 142 static int sysctl_hw_ncpu(SYSCTLFN_PROTO); 143 144 static void fill_kproc2(struct proc *, struct kinfo_proc2 *); 145 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 146 147 /* 148 * ******************************************************************** 149 * section 1: setup routines 150 * ******************************************************************** 151 * these functions are stuffed into a link set for sysctl setup 152 * functions. they're never called or referenced from anywhere else. 153 * ******************************************************************** 154 */ 155 156 /* 157 * sets up the base nodes... 158 */ 159 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 160 { 161 162 sysctl_createv(SYSCTL_PERMANENT, 163 CTLTYPE_NODE, "kern", NULL, 164 NULL, 0, NULL, 0, 165 CTL_KERN, CTL_EOL); 166 sysctl_createv(SYSCTL_PERMANENT, 167 CTLTYPE_NODE, "vm", NULL, 168 NULL, 0, NULL, 0, 169 CTL_VM, CTL_EOL); 170 sysctl_createv(SYSCTL_PERMANENT, 171 CTLTYPE_NODE, "vfs", NULL, 172 NULL, 0, NULL, 0, 173 CTL_VFS, CTL_EOL); 174 sysctl_createv(SYSCTL_PERMANENT, 175 CTLTYPE_NODE, "net", NULL, 176 NULL, 0, NULL, 0, 177 CTL_NET, CTL_EOL); 178 sysctl_createv(SYSCTL_PERMANENT, 179 CTLTYPE_NODE, "debug", NULL, 180 NULL, 0, NULL, 0, 181 CTL_DEBUG, CTL_EOL); 182 sysctl_createv(SYSCTL_PERMANENT, 183 CTLTYPE_NODE, "hw", NULL, 184 NULL, 0, NULL, 0, 185 CTL_HW, CTL_EOL); 186 sysctl_createv(SYSCTL_PERMANENT, 187 CTLTYPE_NODE, "machdep", NULL, 188 NULL, 0, NULL, 0, 189 CTL_MACHDEP, CTL_EOL); 190 /* 191 * this node is inserted so that the sysctl nodes in libc can 192 * operate. 193 */ 194 sysctl_createv(SYSCTL_PERMANENT, 195 CTLTYPE_NODE, "user", NULL, 196 NULL, 0, NULL, 0, 197 CTL_USER, CTL_EOL); 198 sysctl_createv(SYSCTL_PERMANENT, 199 CTLTYPE_NODE, "ddb", NULL, 200 NULL, 0, NULL, 0, 201 CTL_DDB, CTL_EOL); 202 sysctl_createv(SYSCTL_PERMANENT, 203 CTLTYPE_NODE, "proc", NULL, 204 NULL, 0, NULL, 0, 205 CTL_PROC, CTL_EOL); 206 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 207 CTLTYPE_NODE, "vendor", NULL, 208 NULL, 0, NULL, 0, 209 CTL_VENDOR, CTL_EOL); 210 sysctl_createv(SYSCTL_PERMANENT, 211 CTLTYPE_NODE, "emul", NULL, 212 NULL, 0, NULL, 0, 213 CTL_EMUL, CTL_EOL); 214 } 215 216 /* 217 * this setup routine is a replacement for kern_sysctl() 218 */ 219 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 220 { 221 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 222 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 223 extern int dumponpanic; /* defined in kern/subr_prf.c */ 224 225 sysctl_createv(SYSCTL_PERMANENT, 226 CTLTYPE_NODE, "kern", NULL, 227 NULL, 0, NULL, 0, 228 CTL_KERN, CTL_EOL); 229 230 sysctl_createv(SYSCTL_PERMANENT, 231 CTLTYPE_STRING, "ostype", NULL, 232 NULL, 0, &ostype, 0, 233 CTL_KERN, KERN_OSTYPE, CTL_EOL); 234 sysctl_createv(SYSCTL_PERMANENT, 235 CTLTYPE_STRING, "osrelease", NULL, 236 NULL, 0, &osrelease, 0, 237 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 238 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 239 CTLTYPE_INT, "osrevision", NULL, 240 NULL, __NetBSD_Version__, NULL, 0, 241 CTL_KERN, KERN_OSREV, CTL_EOL); 242 sysctl_createv(SYSCTL_PERMANENT, 243 CTLTYPE_STRING, "version", NULL, 244 NULL, 0, &version, 0, 245 CTL_KERN, KERN_VERSION, CTL_EOL); 246 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 247 CTLTYPE_INT, "maxvnodes", NULL, 248 sysctl_kern_maxvnodes, 0, NULL, 0, 249 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 250 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 251 CTLTYPE_INT, "maxproc", NULL, 252 sysctl_kern_maxproc, 0, NULL, 0, 253 CTL_KERN, KERN_MAXPROC, CTL_EOL); 254 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 255 CTLTYPE_INT, "maxfiles", NULL, 256 NULL, 0, &maxfiles, 0, 257 CTL_KERN, KERN_MAXFILES, CTL_EOL); 258 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 259 CTLTYPE_INT, "argmax", NULL, 260 NULL, ARG_MAX, NULL, 0, 261 CTL_KERN, KERN_ARGMAX, CTL_EOL); 262 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 263 CTLTYPE_INT, "securelevel", NULL, 264 sysctl_kern_securelevel, 0, &securelevel, 0, 265 CTL_KERN, KERN_SECURELVL, CTL_EOL); 266 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 267 CTLTYPE_STRING, "hostname", NULL, 268 NULL, 0, &hostname, MAXHOSTNAMELEN, 269 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 270 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 271 CTLTYPE_INT, "hostid", NULL, 272 sysctl_kern_hostid, 0, NULL, 0, 273 CTL_KERN, KERN_HOSTID, CTL_EOL); 274 sysctl_createv(SYSCTL_PERMANENT, 275 CTLTYPE_STRUCT, "clockrate", NULL, 276 sysctl_kern_clockrate, 0, NULL, 277 sizeof(struct clockinfo), 278 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 279 sysctl_createv(SYSCTL_PERMANENT, 280 CTLTYPE_STRUCT, "vnode", NULL, 281 sysctl_kern_vnode, 0, NULL, 0, 282 CTL_KERN, KERN_VNODE, CTL_EOL); 283 sysctl_createv(SYSCTL_PERMANENT, 284 CTLTYPE_STRUCT, "file", NULL, 285 sysctl_kern_file, 0, NULL, 0, 286 CTL_KERN, KERN_FILE, CTL_EOL); 287 #ifndef GPROF 288 sysctl_createv(SYSCTL_PERMANENT, 289 CTLTYPE_NODE, "profiling", NULL, 290 sysctl_notavail, 0, NULL, 0, 291 CTL_KERN, KERN_PROF, CTL_EOL); 292 #endif 293 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 294 CTLTYPE_INT, "posix1version", NULL, 295 NULL, _POSIX_VERSION, NULL, 0, 296 CTL_KERN, KERN_POSIX1, CTL_EOL); 297 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 298 CTLTYPE_INT, "ngroups", NULL, 299 NULL, NGROUPS_MAX, NULL, 0, 300 CTL_KERN, KERN_NGROUPS, CTL_EOL); 301 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 302 CTLTYPE_INT, "job_control", NULL, 303 NULL, 1, NULL, 0, 304 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 305 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 306 CTLTYPE_INT, "saved_ids", NULL, NULL, 307 #ifdef _POSIX_SAVED_IDS 308 1, 309 #else /* _POSIX_SAVED_IDS */ 310 0, 311 #endif /* _POSIX_SAVED_IDS */ 312 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 313 sysctl_createv(SYSCTL_PERMANENT, 314 CTLTYPE_STRUCT, "boottime", NULL, 315 NULL, 0, &boottime, sizeof(boottime), 316 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 317 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 318 CTLTYPE_STRING, "domainname", NULL, 319 NULL, 0, &domainname, MAXHOSTNAMELEN, 320 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 321 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 322 CTLTYPE_INT, "maxpartitions", NULL, 323 NULL, MAXPARTITIONS, NULL, 0, 324 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 325 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 326 CTLTYPE_INT, "rawpartition", NULL, 327 NULL, RAW_PART, NULL, 0, 328 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 329 sysctl_createv(SYSCTL_PERMANENT, 330 CTLTYPE_STRUCT, "timex", NULL, 331 sysctl_notavail, 0, NULL, 0, 332 CTL_KERN, KERN_TIMEX, CTL_EOL); 333 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 334 CTLTYPE_INT, "autonicetime", NULL, 335 sysctl_kern_autonice, 0, &autonicetime, 0, 336 CTL_KERN, KERN_AUTONICETIME, CTL_EOL); 337 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 338 CTLTYPE_INT, "autoniceval", NULL, 339 sysctl_kern_autonice, 0, &autoniceval, 0, 340 CTL_KERN, KERN_AUTONICEVAL, CTL_EOL); 341 sysctl_createv(SYSCTL_PERMANENT, 342 CTLTYPE_INT, "rtc_offset", NULL, 343 NULL, 0, &rtc_offset, 0, 344 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 345 sysctl_createv(SYSCTL_PERMANENT, 346 CTLTYPE_STRING, "root_device", NULL, 347 sysctl_root_device, 0, NULL, 0, 348 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 349 sysctl_createv(SYSCTL_PERMANENT, 350 CTLTYPE_INT, "msgbufsize", NULL, 351 sysctl_msgbuf, 0, &msgbufp->msg_bufs, 0, 352 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 353 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 354 CTLTYPE_INT, "fsync", NULL, 355 NULL, 1, NULL, 0, 356 CTL_KERN, KERN_FSYNC, CTL_EOL); 357 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 358 CTLTYPE_INT, "sysvmsg", NULL, NULL, 359 #ifdef SYSVMSG 360 1, 361 #else /* SYSVMSG */ 362 0, 363 #endif /* SYSVMSG */ 364 NULL, 0, CTL_KERN, KERN_SYSVMSG, CTL_EOL); 365 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 366 CTLTYPE_INT, "sysvsem", NULL, NULL, 367 #ifdef SYSVSEM 368 1, 369 #else /* SYSVSEM */ 370 0, 371 #endif /* SYSVSEM */ 372 NULL, 0, CTL_KERN, KERN_SYSVSEM, CTL_EOL); 373 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 374 CTLTYPE_INT, "sysvshm", NULL, NULL, 375 #ifdef SYSVSHM 376 1, 377 #else /* SYSVSHM */ 378 0, 379 #endif /* SYSVSHM */ 380 NULL, 0, CTL_KERN, KERN_SYSVSHM, CTL_EOL); 381 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 382 CTLTYPE_INT, "synchronized_io", NULL, 383 NULL, 1, NULL, 0, 384 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 385 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 386 CTLTYPE_INT, "iov_max", NULL, 387 NULL, IOV_MAX, NULL, 0, 388 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 389 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 390 CTLTYPE_INT, "mapped_files", NULL, 391 NULL, 1, NULL, 0, 392 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 393 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 394 CTLTYPE_INT, "memlock", NULL, 395 NULL, 1, NULL, 0, 396 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 397 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 398 CTLTYPE_INT, "memlock_range", NULL, 399 NULL, 1, NULL, 0, 400 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 401 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 402 CTLTYPE_INT, "memory_protection", NULL, 403 NULL, 1, NULL, 0, 404 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 405 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 406 CTLTYPE_INT, "login_name_max", NULL, 407 NULL, LOGIN_NAME_MAX, NULL, 0, 408 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 409 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 410 CTLTYPE_STRING, "defcorename", NULL, 411 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 412 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 413 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 414 CTLTYPE_INT, "logsigexit", NULL, 415 NULL, 0, &kern_logsigexit, 0, 416 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 417 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 418 CTLTYPE_INT, "fscale", NULL, 419 NULL, FSCALE, NULL, 0, 420 CTL_KERN, KERN_FSCALE, CTL_EOL); 421 sysctl_createv(SYSCTL_PERMANENT, 422 CTLTYPE_INT, "ccpu", NULL, 423 NULL, 0, &ccpu, 0, 424 CTL_KERN, KERN_CCPU, CTL_EOL); 425 sysctl_createv(SYSCTL_PERMANENT, 426 CTLTYPE_STRUCT, "cp_time", NULL, 427 sysctl_kern_cptime, 0, NULL, 0, 428 CTL_KERN, KERN_CP_TIME, CTL_EOL); 429 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 430 sysctl_createv(SYSCTL_PERMANENT, 431 CTLTYPE_STRUCT, "sysvipc_info", NULL, 432 sysctl_kern_sysvipc, 0, NULL, 0, 433 CTL_KERN, KERN_SYSVIPC_INFO, CTL_EOL); 434 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 435 sysctl_createv(SYSCTL_PERMANENT, 436 CTLTYPE_INT, "msgbuf", NULL, 437 sysctl_msgbuf, 0, NULL, 0, 438 CTL_KERN, KERN_MSGBUF, CTL_EOL); 439 sysctl_createv(SYSCTL_PERMANENT, 440 CTLTYPE_STRUCT, "consdev", NULL, 441 sysctl_consdev, 0, NULL, sizeof(dev_t), 442 CTL_KERN, KERN_CONSDEV, CTL_EOL); 443 #if NPTY > 0 444 sysctl_createv(SYSCTL_PERMANENT, 445 CTLTYPE_INT, "maxptys", NULL, 446 sysctl_kern_maxptys, 0, NULL, 0, 447 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 448 #endif /* NPTY > 0 */ 449 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 450 CTLTYPE_INT, "maxphys", NULL, 451 NULL, MAXPHYS, NULL, 0, 452 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 453 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 454 CTLTYPE_INT, "sbmax", NULL, 455 sysctl_kern_sbmax, 0, NULL, 0, 456 CTL_KERN, KERN_SBMAX, CTL_EOL); 457 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 458 CTLTYPE_INT, "monotonic_clock", NULL, 459 /* XXX _POSIX_VERSION */ 460 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 461 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 462 sysctl_createv(SYSCTL_PERMANENT, 463 CTLTYPE_INT, "urandom", NULL, 464 sysctl_kern_urnd, 0, NULL, 0, 465 CTL_KERN, KERN_URND, CTL_EOL); 466 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 467 CTLTYPE_INT, "labelsector", NULL, 468 NULL, LABELSECTOR, NULL, 0, 469 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 470 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 471 CTLTYPE_INT, "labeloffset", NULL, 472 NULL, LABELOFFSET, NULL, 0, 473 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 474 sysctl_createv(SYSCTL_PERMANENT, 475 CTLTYPE_NODE, "lwp", NULL, 476 sysctl_kern_lwp, 0, NULL, 0, 477 CTL_KERN, KERN_LWP, CTL_EOL); 478 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 479 CTLTYPE_INT, "forkfsleep", NULL, 480 sysctl_kern_forkfsleep, 0, NULL, 0, 481 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 482 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 483 CTLTYPE_INT, "posix_threads", NULL, 484 /* XXX _POSIX_VERSION */ 485 NULL, _POSIX_THREADS, NULL, 0, 486 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 487 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 488 CTLTYPE_INT, "posix_semaphores", NULL, NULL, 489 #ifdef P1003_1B_SEMAPHORE 490 200112, 491 #else /* P1003_1B_SEMAPHORE */ 492 0, 493 #endif /* P1003_1B_SEMAPHORE */ 494 NULL, 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 495 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 496 CTLTYPE_INT, "posix_barriers", NULL, 497 /* XXX _POSIX_VERSION */ 498 NULL, _POSIX_BARRIERS, NULL, 0, 499 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 500 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 501 CTLTYPE_INT, "posix_timers", NULL, 502 /* XXX _POSIX_VERSION */ 503 NULL, _POSIX_TIMERS, NULL, 0, 504 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 505 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 506 CTLTYPE_INT, "posix_spin_locks", NULL, 507 /* XXX _POSIX_VERSION */ 508 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 509 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 510 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 511 CTLTYPE_INT, "posix_reader_writer_locks", NULL, 512 /* XXX _POSIX_VERSION */ 513 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 514 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 515 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 516 CTLTYPE_INT, "dump_on_panic", NULL, 517 NULL, 0, &dumponpanic, 0, 518 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 519 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 520 CTLTYPE_INT, "somaxkva", NULL, 521 sysctl_kern_somaxkva, 0, NULL, 0, 522 CTL_KERN, KERN_SOMAXKVA, CTL_EOL); 523 sysctl_createv(SYSCTL_PERMANENT, 524 CTLTYPE_INT, "root_partition", NULL, 525 sysctl_kern_root_partition, 0, NULL, 0, 526 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 527 sysctl_createv(SYSCTL_PERMANENT, 528 CTLTYPE_STRUCT, "drivers", NULL, 529 sysctl_kern_drivers, 0, NULL, 0, 530 CTL_KERN, KERN_DRIVERS, CTL_EOL); 531 } 532 533 SYSCTL_SETUP(sysctl_kern_proc_setup, 534 "sysctl kern.proc/proc2/proc_args subtree setup") 535 { 536 537 sysctl_createv(SYSCTL_PERMANENT, 538 CTLTYPE_NODE, "kern", NULL, 539 NULL, 0, NULL, 0, 540 CTL_KERN, CTL_EOL); 541 542 sysctl_createv(SYSCTL_PERMANENT, 543 CTLTYPE_NODE, "proc", NULL, 544 sysctl_doeproc, 0, NULL, 0, 545 CTL_KERN, KERN_PROC, CTL_EOL); 546 sysctl_createv(SYSCTL_PERMANENT, 547 CTLTYPE_NODE, "proc2", NULL, 548 sysctl_doeproc, 0, NULL, 0, 549 CTL_KERN, KERN_PROC2, CTL_EOL); 550 sysctl_createv(SYSCTL_PERMANENT, 551 CTLTYPE_NODE, "proc_args", NULL, 552 sysctl_kern_proc_args, 0, NULL, 0, 553 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 554 555 /* 556 "nodes" under these: 557 558 KERN_PROC_ALL 559 KERN_PROC_PID pid 560 KERN_PROC_PGRP pgrp 561 KERN_PROC_SESSION sess 562 KERN_PROC_TTY tty 563 KERN_PROC_UID uid 564 KERN_PROC_RUID uid 565 KERN_PROC_GID gid 566 KERN_PROC_RGID gid 567 568 all in all, probably not worth the effort... 569 */ 570 } 571 572 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 573 { 574 u_int u; 575 u_quad_t q; 576 577 sysctl_createv(SYSCTL_PERMANENT, 578 CTLTYPE_NODE, "hw", NULL, 579 NULL, 0, NULL, 0, 580 CTL_HW, CTL_EOL); 581 582 sysctl_createv(SYSCTL_PERMANENT, 583 CTLTYPE_STRING, "machine", NULL, 584 NULL, 0, machine, 0, 585 CTL_HW, HW_MACHINE, CTL_EOL); 586 sysctl_createv(SYSCTL_PERMANENT, 587 CTLTYPE_STRING, "model", NULL, 588 NULL, 0, cpu_model, 0, 589 CTL_HW, HW_MODEL, CTL_EOL); 590 sysctl_createv(SYSCTL_PERMANENT, 591 CTLTYPE_INT, "ncpu", NULL, 592 sysctl_hw_ncpu, 0, NULL, 0, 593 CTL_HW, HW_NCPU, CTL_EOL); 594 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 595 CTLTYPE_INT, "byteorder", NULL, 596 NULL, BYTE_ORDER, NULL, 0, 597 CTL_HW, HW_BYTEORDER, CTL_EOL); 598 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 599 UINT_MAX : physmem * PAGE_SIZE; 600 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 601 CTLTYPE_INT, "physmem", NULL, 602 NULL, u, NULL, 0, 603 CTL_HW, HW_PHYSMEM, CTL_EOL); 604 sysctl_createv(SYSCTL_PERMANENT, 605 CTLTYPE_INT, "usermem", NULL, 606 sysctl_hw_usermem, 0, NULL, 0, 607 CTL_HW, HW_USERMEM, CTL_EOL); 608 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 609 CTLTYPE_INT, "pagesize", NULL, 610 NULL, PAGE_SIZE, NULL, 0, 611 CTL_HW, HW_PAGESIZE, CTL_EOL); 612 sysctl_createv(SYSCTL_PERMANENT, 613 CTLTYPE_STRING, "disknames", NULL, 614 sysctl_hw_disknames, 0, NULL, 0, 615 CTL_HW, HW_DISKNAMES, CTL_EOL); 616 sysctl_createv(SYSCTL_PERMANENT, 617 CTLTYPE_STRUCT, "diskstats", NULL, 618 sysctl_hw_diskstats, 0, NULL, 0, 619 CTL_HW, HW_DISKSTATS, CTL_EOL); 620 sysctl_createv(SYSCTL_PERMANENT, 621 CTLTYPE_STRING, "machine_arch", NULL, 622 NULL, 0, machine_arch, 0, 623 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 624 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 625 CTLTYPE_INT, "alignbytes", NULL, 626 NULL, ALIGNBYTES, NULL, 0, 627 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 628 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE|SYSCTL_HEX, 629 CTLTYPE_STRING, "cnmagic", NULL, 630 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 631 CTL_HW, HW_CNMAGIC, CTL_EOL); 632 q = (u_quad_t)physmem * PAGE_SIZE; 633 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 634 CTLTYPE_QUAD, "physmem64", NULL, 635 NULL, q, NULL, 0, 636 CTL_HW, HW_PHYSMEM64, CTL_EOL); 637 sysctl_createv(SYSCTL_PERMANENT, 638 CTLTYPE_QUAD, "usermem64", NULL, 639 sysctl_hw_usermem, 0, NULL, 0, 640 CTL_HW, HW_USERMEM64, CTL_EOL); 641 } 642 643 #ifdef DEBUG 644 /* 645 * Debugging related system variables. 646 */ 647 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 648 struct ctldebug debug5, debug6, debug7, debug8, debug9; 649 struct ctldebug debug10, debug11, debug12, debug13, debug14; 650 struct ctldebug debug15, debug16, debug17, debug18, debug19; 651 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 652 &debug0, &debug1, &debug2, &debug3, &debug4, 653 &debug5, &debug6, &debug7, &debug8, &debug9, 654 &debug10, &debug11, &debug12, &debug13, &debug14, 655 &debug15, &debug16, &debug17, &debug18, &debug19, 656 }; 657 658 /* 659 * this setup routine is a replacement for debug_sysctl() 660 * 661 * note that it creates several nodes per defined debug variable 662 */ 663 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 664 { 665 struct ctldebug *cdp; 666 char nodename[20]; 667 int i; 668 669 /* 670 * two ways here: 671 * 672 * the "old" way (debug.name -> value) which was emulated by 673 * the sysctl(8) binary 674 * 675 * the new way, which the sysctl(8) binary was actually using 676 677 node debug 678 node debug.0 679 string debug.0.name 680 int debug.0.value 681 int debug.name 682 683 */ 684 685 sysctl_createv(SYSCTL_PERMANENT, 686 CTLTYPE_NODE, "debug", NULL, 687 NULL, 0, NULL, 0, 688 CTL_DEBUG, CTL_EOL); 689 690 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 691 cdp = debugvars[i]; 692 if (cdp->debugname == NULL || cdp->debugvar == NULL) 693 continue; 694 695 snprintf(nodename, sizeof(nodename), "debug%d", i); 696 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 697 CTLTYPE_NODE, nodename, NULL, 698 NULL, 0, NULL, 0, 699 CTL_DEBUG, i, CTL_EOL); 700 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 701 CTLTYPE_STRING, "name", NULL, 702 NULL, 0, cdp->debugname, 0, 703 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 704 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 705 CTLTYPE_INT, "value", NULL, 706 NULL, 0, cdp->debugvar, 0, 707 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 708 sysctl_createv(SYSCTL_PERMANENT, 709 CTLTYPE_INT, cdp->debugname, NULL, 710 NULL, 0, cdp->debugvar, 0, 711 CTL_DEBUG, CTL_CREATE, CTL_EOL); 712 } 713 } 714 #endif /* DEBUG */ 715 716 /* 717 * ******************************************************************** 718 * section 2: private node-specific helper routines. 719 * ******************************************************************** 720 */ 721 722 /* 723 * sysctl helper routine for kern.maxvnodes. drain vnodes if 724 * new value is lower than desiredvnodes and then calls reinit 725 * routines that needs to adjust to the new value. 726 */ 727 static int 728 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 729 { 730 int error, new_vnodes, old_vnodes; 731 struct sysctlnode node; 732 733 new_vnodes = desiredvnodes; 734 node = *rnode; 735 node.sysctl_data = &new_vnodes; 736 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 737 if (error || newp == NULL) 738 return (error); 739 740 old_vnodes = desiredvnodes; 741 desiredvnodes = new_vnodes; 742 if (new_vnodes < old_vnodes) { 743 error = vfs_drainvnodes(new_vnodes, l->l_proc); 744 if (error) { 745 desiredvnodes = old_vnodes; 746 return (error); 747 } 748 } 749 vfs_reinit(); 750 nchreinit(); 751 752 return (0); 753 } 754 755 /* 756 * sysctl helper routine for kern.maxvnodes. ensures that the new 757 * values are not too low or too high. 758 */ 759 static int 760 sysctl_kern_maxproc(SYSCTLFN_ARGS) 761 { 762 int error, nmaxproc; 763 struct sysctlnode node; 764 765 nmaxproc = maxproc; 766 node = *rnode; 767 node.sysctl_data = &nmaxproc; 768 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 769 if (error || newp == NULL) 770 return (error); 771 772 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 773 return (EINVAL); 774 #ifdef __HAVE_CPU_MAXPROC 775 if (nmaxproc > cpu_maxproc()) 776 return (EINVAL); 777 #endif 778 maxproc = nmaxproc; 779 780 return (0); 781 } 782 783 /* 784 * sysctl helper routine for kern.securelevel. ensures that the value 785 * only rises unless the caller has pid 1 (assumed to be init). 786 */ 787 static int 788 sysctl_kern_securelevel(SYSCTLFN_ARGS) 789 { 790 int newsecurelevel, error; 791 struct sysctlnode node; 792 793 newsecurelevel = securelevel; 794 node = *rnode; 795 node.sysctl_data = &newsecurelevel; 796 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 797 if (error || newp == NULL) 798 return (error); 799 800 if (newsecurelevel < securelevel && l->l_proc->p_pid != 1) 801 return (EPERM); 802 securelevel = newsecurelevel; 803 804 return (error); 805 } 806 807 /* 808 * sysctl helper function for kern.hostid. the hostid is a long, but 809 * we export it as an int, so we need to give it a little help. 810 */ 811 static int 812 sysctl_kern_hostid(SYSCTLFN_ARGS) 813 { 814 int error, inthostid; 815 struct sysctlnode node; 816 817 inthostid = hostid; /* XXX assumes sizeof int >= sizeof long */ 818 node = *rnode; 819 node.sysctl_data = &inthostid; 820 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 821 if (error || newp == NULL) 822 return (error); 823 824 hostid = inthostid; 825 826 return (0); 827 } 828 829 /* 830 * sysctl helper routine for kern.clockrate. assembles a struct on 831 * the fly to be returned to the caller. 832 */ 833 static int 834 sysctl_kern_clockrate(SYSCTLFN_ARGS) 835 { 836 struct clockinfo clkinfo; 837 struct sysctlnode node; 838 839 clkinfo.tick = tick; 840 clkinfo.tickadj = tickadj; 841 clkinfo.hz = hz; 842 clkinfo.profhz = profhz; 843 clkinfo.stathz = stathz ? stathz : hz; 844 845 node = *rnode; 846 node.sysctl_data = &clkinfo; 847 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 848 } 849 850 851 /* 852 * sysctl helper routine for kern.file pseudo-subtree. 853 */ 854 static int 855 sysctl_kern_file(SYSCTLFN_ARGS) 856 { 857 int error; 858 size_t buflen; 859 struct file *fp; 860 char *start, *where; 861 862 start = where = oldp; 863 buflen = *oldlenp; 864 if (where == NULL) { 865 /* 866 * overestimate by 10 files 867 */ 868 *oldlenp = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 869 return (0); 870 } 871 872 /* 873 * first copyout filehead 874 */ 875 if (buflen < sizeof(filehead)) { 876 *oldlenp = 0; 877 return (0); 878 } 879 error = copyout(&filehead, where, sizeof(filehead)); 880 if (error) 881 return (error); 882 buflen -= sizeof(filehead); 883 where += sizeof(filehead); 884 885 /* 886 * followed by an array of file structures 887 */ 888 LIST_FOREACH(fp, &filehead, f_list) { 889 if (buflen < sizeof(struct file)) { 890 *oldlenp = where - start; 891 return (ENOMEM); 892 } 893 error = copyout(fp, where, sizeof(struct file)); 894 if (error) 895 return (error); 896 buflen -= sizeof(struct file); 897 where += sizeof(struct file); 898 } 899 *oldlenp = where - start; 900 return (0); 901 } 902 903 /* 904 * sysctl helper routine for kern.autonicetime and kern.autoniceval. 905 * asserts that the assigned value is in the correct range. 906 */ 907 static int 908 sysctl_kern_autonice(SYSCTLFN_ARGS) 909 { 910 int error, t = 0; 911 struct sysctlnode node; 912 913 node = *rnode; 914 t = *(int*)node.sysctl_data; 915 node.sysctl_data = &t; 916 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 917 if (error || newp == NULL) 918 return (error); 919 920 switch (node.sysctl_num) { 921 case KERN_AUTONICETIME: 922 if (t >= 0) 923 autonicetime = t; 924 break; 925 case KERN_AUTONICEVAL: 926 if (t < PRIO_MIN) 927 t = PRIO_MIN; 928 else if (t > PRIO_MAX) 929 t = PRIO_MAX; 930 autoniceval = t; 931 break; 932 } 933 934 return (0); 935 } 936 937 /* 938 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. for the 939 * former it merely checks the the message buffer is set up. for the 940 * latter, it also copies out the data if necessary. 941 */ 942 static int 943 sysctl_msgbuf(SYSCTLFN_ARGS) 944 { 945 char *where = oldp; 946 size_t len, maxlen; 947 long beg, end; 948 int error; 949 950 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 951 msgbufenabled = 0; 952 return (ENXIO); 953 } 954 955 switch (rnode->sysctl_num) { 956 case KERN_MSGBUFSIZE: 957 return (sysctl_lookup(SYSCTLFN_CALL(rnode))); 958 case KERN_MSGBUF: 959 break; 960 default: 961 return (EOPNOTSUPP); 962 } 963 964 if (newp != NULL) 965 return (EPERM); 966 967 if (oldp == NULL) { 968 /* always return full buffer size */ 969 *oldlenp = msgbufp->msg_bufs; 970 return (0); 971 } 972 973 error = 0; 974 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 975 976 /* 977 * First, copy from the write pointer to the end of 978 * message buffer. 979 */ 980 beg = msgbufp->msg_bufx; 981 end = msgbufp->msg_bufs; 982 while (maxlen > 0) { 983 len = MIN(end - beg, maxlen); 984 if (len == 0) 985 break; 986 error = copyout(&msgbufp->msg_bufc[beg], where, len); 987 if (error) 988 break; 989 where += len; 990 maxlen -= len; 991 992 /* 993 * ... then, copy from the beginning of message buffer to 994 * the write pointer. 995 */ 996 beg = 0; 997 end = msgbufp->msg_bufx; 998 } 999 1000 return (error); 1001 } 1002 1003 /* 1004 * sysctl helper routine for kern.defcorename. in the case of a new 1005 * string being assigned, check that it's not a zero-length string. 1006 * (XXX the check in -current doesn't work, but do we really care?) 1007 */ 1008 static int 1009 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1010 { 1011 int error; 1012 char newcorename[MAXPATHLEN]; 1013 struct sysctlnode node; 1014 1015 node = *rnode; 1016 node.sysctl_data = &newcorename[0]; 1017 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1018 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1019 if (error || newp == NULL) 1020 return (error); 1021 1022 /* 1023 * when sysctl_lookup() deals with a string, it's guaranteed 1024 * to come back nul terminated. so there. :) 1025 */ 1026 if (strlen(newcorename) == 0) 1027 return (EINVAL); 1028 1029 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1030 1031 return (0); 1032 } 1033 1034 /* 1035 * sysctl helper routine for kern.cp_time node. adds up cpu time 1036 * across all cpus. 1037 */ 1038 static int 1039 sysctl_kern_cptime(SYSCTLFN_ARGS) 1040 { 1041 struct sysctlnode node = *rnode; 1042 1043 #ifndef MULTIPROCESSOR 1044 1045 if (namelen == 1 && name[0] == 0) { 1046 /* 1047 * you're allowed to ask for the zero'th processor 1048 */ 1049 name++; 1050 namelen--; 1051 } 1052 node.sysctl_data = curcpu()->ci_schedstate.spc_cp_time; 1053 node.sysctl_size = sizeof(curcpu()->ci_schedstate.spc_cp_time); 1054 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1055 1056 #else /* MULTIPROCESSOR */ 1057 1058 u_int64_t *cp_time = NULL; 1059 int error, n = sysctl_ncpus(), i; 1060 struct cpu_info *ci; 1061 CPU_INFO_ITERATOR cii; 1062 1063 /* 1064 * if you specifically pass a buffer that is the size of the 1065 * sum, or if you are probing for the size, you get the "sum" 1066 * of cp_time (and the size thereof) across all processors. 1067 * 1068 * alternately, you can pass an additional mib number and get 1069 * cp_time for that particular processor. 1070 */ 1071 switch (namelen) { 1072 case 0: 1073 if (*oldlenp == sizeof(u_int64_t) * CPUSTATES || oldp == NULL) { 1074 node.sysctl_size = sizeof(u_int64_t) * CPUSTATES; 1075 n = -1; /* SUM */ 1076 } 1077 else { 1078 node.sysctl_size = n * sizeof(u_int64_t) * CPUSTATES; 1079 n = -2; /* ALL */ 1080 } 1081 break; 1082 case 1: 1083 if (name[0] < 0 || name[0] >= n) 1084 return (EINVAL); /* ENOSUCHPROCESSOR */ 1085 node.sysctl_size = sizeof(u_int64_t) * CPUSTATES; 1086 n = name[0]; 1087 /* 1088 * adjust these so that sysctl_lookup() will be happy 1089 */ 1090 name++; 1091 namelen--; 1092 break; 1093 default: 1094 return (EINVAL); 1095 } 1096 1097 cp_time = malloc(node.sysctl_size, M_TEMP, M_WAITOK|M_CANFAIL); 1098 if (cp_time == NULL) 1099 return (ENOMEM); 1100 node.sysctl_data = cp_time; 1101 memset(cp_time, 0, node.sysctl_size); 1102 1103 for (CPU_INFO_FOREACH(cii, ci)) { 1104 if (n <= 0) 1105 for (i = 0; i < CPUSTATES; i++) 1106 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1107 /* 1108 * if a specific processor was requested and we just 1109 * did it, we're done here 1110 */ 1111 if (n == 0) 1112 break; 1113 /* 1114 * if doing "all", skip to next cp_time set for next processor 1115 */ 1116 if (n == -2) 1117 cp_time += CPUSTATES; 1118 /* 1119 * if we're doing a specific processor, we're one 1120 * processor closer 1121 */ 1122 if (n > 0) 1123 n--; 1124 } 1125 1126 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1127 free(node.sysctl_data, M_TEMP); 1128 return (error); 1129 1130 #endif /* MULTIPROCESSOR */ 1131 } 1132 1133 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1134 /* 1135 * sysctl helper routine for kern.sysvipc_info subtree. 1136 */ 1137 1138 #define FILL_PERM(src, dst) do { \ 1139 (dst)._key = (src)._key; \ 1140 (dst).uid = (src).uid; \ 1141 (dst).gid = (src).gid; \ 1142 (dst).cuid = (src).cuid; \ 1143 (dst).cgid = (src).cgid; \ 1144 (dst).mode = (src).mode; \ 1145 (dst)._seq = (src)._seq; \ 1146 } while (/*CONSTCOND*/ 0); 1147 #define FILL_MSG(src, dst) do { \ 1148 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1149 (dst).msg_qnum = (src).msg_qnum; \ 1150 (dst).msg_qbytes = (src).msg_qbytes; \ 1151 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1152 (dst).msg_lspid = (src).msg_lspid; \ 1153 (dst).msg_lrpid = (src).msg_lrpid; \ 1154 (dst).msg_stime = (src).msg_stime; \ 1155 (dst).msg_rtime = (src).msg_rtime; \ 1156 (dst).msg_ctime = (src).msg_ctime; \ 1157 } while (/*CONSTCOND*/ 0) 1158 #define FILL_SEM(src, dst) do { \ 1159 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1160 (dst).sem_nsems = (src).sem_nsems; \ 1161 (dst).sem_otime = (src).sem_otime; \ 1162 (dst).sem_ctime = (src).sem_ctime; \ 1163 } while (/*CONSTCOND*/ 0) 1164 #define FILL_SHM(src, dst) do { \ 1165 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1166 (dst).shm_segsz = (src).shm_segsz; \ 1167 (dst).shm_lpid = (src).shm_lpid; \ 1168 (dst).shm_cpid = (src).shm_cpid; \ 1169 (dst).shm_atime = (src).shm_atime; \ 1170 (dst).shm_dtime = (src).shm_dtime; \ 1171 (dst).shm_ctime = (src).shm_ctime; \ 1172 (dst).shm_nattch = (src).shm_nattch; \ 1173 } while (/*CONSTCOND*/ 0) 1174 1175 static int 1176 sysctl_kern_sysvipc(SYSCTLFN_ARGS) 1177 { 1178 void *where = oldp; 1179 size_t *sizep = oldlenp; 1180 #ifdef SYSVMSG 1181 struct msg_sysctl_info *msgsi = NULL; 1182 #endif 1183 #ifdef SYSVSEM 1184 struct sem_sysctl_info *semsi = NULL; 1185 #endif 1186 #ifdef SYSVSHM 1187 struct shm_sysctl_info *shmsi = NULL; 1188 #endif 1189 size_t infosize, dssize, tsize, buflen; 1190 void *buf = NULL; 1191 char *start; 1192 int32_t nds; 1193 int i, error, ret; 1194 1195 if (namelen != 1) 1196 return (EINVAL); 1197 1198 start = where; 1199 buflen = *sizep; 1200 1201 switch (*name) { 1202 case KERN_SYSVIPC_MSG_INFO: 1203 #ifdef SYSVMSG 1204 infosize = sizeof(msgsi->msginfo); 1205 nds = msginfo.msgmni; 1206 dssize = sizeof(msgsi->msgids[0]); 1207 break; 1208 #else 1209 return (EINVAL); 1210 #endif 1211 case KERN_SYSVIPC_SEM_INFO: 1212 #ifdef SYSVSEM 1213 infosize = sizeof(semsi->seminfo); 1214 nds = seminfo.semmni; 1215 dssize = sizeof(semsi->semids[0]); 1216 break; 1217 #else 1218 return (EINVAL); 1219 #endif 1220 case KERN_SYSVIPC_SHM_INFO: 1221 #ifdef SYSVSHM 1222 infosize = sizeof(shmsi->shminfo); 1223 nds = shminfo.shmmni; 1224 dssize = sizeof(shmsi->shmids[0]); 1225 break; 1226 #else 1227 return (EINVAL); 1228 #endif 1229 default: 1230 return (EINVAL); 1231 } 1232 /* 1233 * Round infosize to 64 bit boundary if requesting more than just 1234 * the info structure or getting the total data size. 1235 */ 1236 if (where == NULL || *sizep > infosize) 1237 infosize = ((infosize + 7) / 8) * 8; 1238 tsize = infosize + nds * dssize; 1239 1240 /* Return just the total size required. */ 1241 if (where == NULL) { 1242 *sizep = tsize; 1243 return (0); 1244 } 1245 1246 /* Not enough room for even the info struct. */ 1247 if (buflen < infosize) { 1248 *sizep = 0; 1249 return (ENOMEM); 1250 } 1251 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1252 memset(buf, 0, min(tsize, buflen)); 1253 1254 switch (*name) { 1255 #ifdef SYSVMSG 1256 case KERN_SYSVIPC_MSG_INFO: 1257 msgsi = (struct msg_sysctl_info *)buf; 1258 msgsi->msginfo = msginfo; 1259 break; 1260 #endif 1261 #ifdef SYSVSEM 1262 case KERN_SYSVIPC_SEM_INFO: 1263 semsi = (struct sem_sysctl_info *)buf; 1264 semsi->seminfo = seminfo; 1265 break; 1266 #endif 1267 #ifdef SYSVSHM 1268 case KERN_SYSVIPC_SHM_INFO: 1269 shmsi = (struct shm_sysctl_info *)buf; 1270 shmsi->shminfo = shminfo; 1271 break; 1272 #endif 1273 } 1274 buflen -= infosize; 1275 1276 ret = 0; 1277 if (buflen > 0) { 1278 /* Fill in the IPC data structures. */ 1279 for (i = 0; i < nds; i++) { 1280 if (buflen < dssize) { 1281 ret = ENOMEM; 1282 break; 1283 } 1284 switch (*name) { 1285 #ifdef SYSVMSG 1286 case KERN_SYSVIPC_MSG_INFO: 1287 FILL_MSG(msqids[i], msgsi->msgids[i]); 1288 break; 1289 #endif 1290 #ifdef SYSVSEM 1291 case KERN_SYSVIPC_SEM_INFO: 1292 FILL_SEM(sema[i], semsi->semids[i]); 1293 break; 1294 #endif 1295 #ifdef SYSVSHM 1296 case KERN_SYSVIPC_SHM_INFO: 1297 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1298 break; 1299 #endif 1300 } 1301 buflen -= dssize; 1302 } 1303 } 1304 *sizep -= buflen; 1305 error = copyout(buf, start, *sizep); 1306 /* If copyout succeeded, use return code set earlier. */ 1307 if (error == 0) 1308 error = ret; 1309 if (buf) 1310 free(buf, M_TEMP); 1311 return (error); 1312 } 1313 1314 #undef FILL_PERM 1315 #undef FILL_MSG 1316 #undef FILL_SEM 1317 #undef FILL_SHM 1318 1319 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 1320 1321 #if NPTY > 0 1322 /* 1323 * sysctl helper routine for kern.maxptys. ensures that any new value 1324 * is acceptable to the pty subsystem. 1325 */ 1326 static int 1327 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1328 { 1329 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1330 int error, max; 1331 struct sysctlnode node; 1332 1333 /* get current value of maxptys */ 1334 max = pty_maxptys(0, 0); 1335 1336 node = *rnode; 1337 node.sysctl_data = &max; 1338 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1339 if (error || newp == NULL) 1340 return (error); 1341 1342 if (max != pty_maxptys(max, 1)) 1343 return (EINVAL); 1344 1345 return (0); 1346 } 1347 #endif /* NPTY > 0 */ 1348 1349 /* 1350 * sysctl helper routine for kern.sbmax. basically just ensures that 1351 * any new value is not too small. 1352 */ 1353 static int 1354 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1355 { 1356 int error, new_sbmax; 1357 struct sysctlnode node; 1358 1359 new_sbmax = sb_max; 1360 node = *rnode; 1361 node.sysctl_data = &new_sbmax; 1362 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1363 if (error || newp == NULL) 1364 return (error); 1365 1366 error = sb_max_set(new_sbmax); 1367 1368 return (error); 1369 } 1370 1371 /* 1372 * sysctl helper routine for kern.urandom node. picks a random number 1373 * for you. 1374 */ 1375 static int 1376 sysctl_kern_urnd(SYSCTLFN_ARGS) 1377 { 1378 #if NRND > 0 1379 int v; 1380 1381 if (rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY) == sizeof(v)) { 1382 struct sysctlnode node = *rnode; 1383 node.sysctl_data = &v; 1384 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1385 } 1386 else 1387 return (EIO); /*XXX*/ 1388 #else 1389 return (EOPNOTSUPP); 1390 #endif 1391 } 1392 1393 /* 1394 * sysctl helper routine to do kern.lwp.* work. 1395 */ 1396 static int 1397 sysctl_kern_lwp(SYSCTLFN_ARGS) 1398 { 1399 struct kinfo_lwp klwp; 1400 struct proc *p; 1401 struct lwp *l2; 1402 char *where, *dp; 1403 int pid, elem_size, elem_count; 1404 int buflen, needed, error; 1405 1406 dp = where = oldp; 1407 buflen = where != NULL ? *oldlenp : 0; 1408 error = needed = 0; 1409 1410 if (newp != NULL || namelen != 3) 1411 return (EINVAL); 1412 pid = name[0]; 1413 elem_size = name[1]; 1414 elem_count = name[2]; 1415 1416 p = pfind(pid); 1417 if (p == NULL) 1418 return (ESRCH); 1419 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1420 if (buflen >= elem_size && elem_count > 0) { 1421 fill_lwp(l2, &klwp); 1422 /* 1423 * Copy out elem_size, but not larger than 1424 * the size of a struct kinfo_proc2. 1425 */ 1426 error = copyout(&klwp, dp, 1427 min(sizeof(klwp), elem_size)); 1428 if (error) 1429 goto cleanup; 1430 dp += elem_size; 1431 buflen -= elem_size; 1432 elem_count--; 1433 } 1434 needed += elem_size; 1435 } 1436 1437 if (where != NULL) { 1438 *oldlenp = dp - where; 1439 if (needed > *oldlenp) 1440 return (ENOMEM); 1441 } else { 1442 needed += KERN_PROCSLOP; 1443 *oldlenp = needed; 1444 } 1445 return (0); 1446 cleanup: 1447 return (error); 1448 } 1449 1450 /* 1451 * sysctl helper routine for kern.forkfsleep node. ensures that the 1452 * given value is not too large or two small, and is at least one 1453 * timer tick if not zero. 1454 */ 1455 static int 1456 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1457 { 1458 /* userland sees value in ms, internally is in ticks */ 1459 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1460 int error, timo, lsleep; 1461 struct sysctlnode node; 1462 1463 lsleep = forkfsleep * 1000 / hz; 1464 node = *rnode; 1465 node.sysctl_data = &lsleep; 1466 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1467 if (error || newp == NULL) 1468 return (error); 1469 1470 /* refuse negative values, and overly 'long time' */ 1471 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1472 return (EINVAL); 1473 1474 timo = mstohz(lsleep); 1475 1476 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1477 if (lsleep != 0 && timo == 0) 1478 forkfsleep = 1; 1479 else 1480 forkfsleep = timo; 1481 1482 return (0); 1483 } 1484 1485 /* 1486 * sysctl helper routine for kern.somaxkva. ensures that the given 1487 * value is not too small. 1488 * (XXX should we maybe make sure it's not too large as well?) 1489 */ 1490 static int 1491 sysctl_kern_somaxkva(SYSCTLFN_ARGS) 1492 { 1493 int error, new_somaxkva; 1494 struct sysctlnode node; 1495 1496 new_somaxkva = somaxkva; 1497 node = *rnode; 1498 node.sysctl_data = &new_somaxkva; 1499 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1500 if (error || newp == NULL) 1501 return (error); 1502 1503 if (new_somaxkva < (16 * 1024 * 1024)) /* sanity */ 1504 return (EINVAL); 1505 somaxkva = new_somaxkva; 1506 1507 return (error); 1508 } 1509 1510 /* 1511 * sysctl helper routine for kern.root_partition 1512 */ 1513 static int 1514 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1515 { 1516 int rootpart = DISKPART(rootdev); 1517 struct sysctlnode node = *rnode; 1518 1519 node.sysctl_data = &rootpart; 1520 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1521 } 1522 1523 /* 1524 * sysctl helper function for kern.drivers 1525 */ 1526 static int 1527 sysctl_kern_drivers(SYSCTLFN_ARGS) 1528 { 1529 int error; 1530 size_t buflen; 1531 struct kinfo_drivers kd; 1532 char *start, *where; 1533 const char *dname; 1534 int i; 1535 extern struct devsw_conv *devsw_conv; 1536 extern int max_devsw_convs; 1537 1538 if (newp != NULL || namelen != 0) 1539 return (EINVAL); 1540 1541 start = where = oldp; 1542 buflen = *oldlenp; 1543 if (where == NULL) { 1544 *oldlenp = max_devsw_convs * sizeof kd; 1545 return 0; 1546 } 1547 1548 /* 1549 * An array of kinfo_drivers structures 1550 */ 1551 error = 0; 1552 for (i = 0; i < max_devsw_convs; i++) { 1553 dname = devsw_conv[i].d_name; 1554 if (dname == NULL) 1555 continue; 1556 if (buflen < sizeof kd) { 1557 error = ENOMEM; 1558 break; 1559 } 1560 kd.d_bmajor = devsw_conv[i].d_bmajor; 1561 kd.d_cmajor = devsw_conv[i].d_cmajor; 1562 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1563 error = copyout(&kd, where, sizeof kd); 1564 if (error != 0) 1565 break; 1566 buflen -= sizeof kd; 1567 where += sizeof kd; 1568 } 1569 *oldlenp = where - start; 1570 return error; 1571 } 1572 1573 static int 1574 sysctl_doeproc(SYSCTLFN_ARGS) 1575 { 1576 struct eproc eproc; 1577 struct kinfo_proc2 kproc2; 1578 struct kinfo_proc *dp; 1579 struct proc *p; 1580 const struct proclist_desc *pd; 1581 char *where, *dp2; 1582 int type, op, arg; 1583 u_int elem_size, elem_count; 1584 size_t buflen, needed; 1585 int error; 1586 1587 dp = oldp; 1588 dp2 = where = oldp; 1589 buflen = where != NULL ? *oldlenp : 0; 1590 error = 0; 1591 needed = 0; 1592 type = rnode->sysctl_num; 1593 1594 if (type == KERN_PROC) { 1595 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 1596 return (EINVAL); 1597 op = name[0]; 1598 if (op != KERN_PROC_ALL) 1599 arg = name[1]; 1600 else 1601 arg = 0; /* Quell compiler warning */ 1602 elem_size = elem_count = 0; /* Ditto */ 1603 } else { 1604 if (namelen != 4) 1605 return (EINVAL); 1606 op = name[0]; 1607 arg = name[1]; 1608 elem_size = name[2]; 1609 elem_count = name[3]; 1610 } 1611 1612 proclist_lock_read(); 1613 1614 pd = proclists; 1615 again: 1616 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1617 /* 1618 * Skip embryonic processes. 1619 */ 1620 if (p->p_stat == SIDL) 1621 continue; 1622 /* 1623 * TODO - make more efficient (see notes below). 1624 * do by session. 1625 */ 1626 switch (op) { 1627 1628 case KERN_PROC_PID: 1629 /* could do this with just a lookup */ 1630 if (p->p_pid != (pid_t)arg) 1631 continue; 1632 break; 1633 1634 case KERN_PROC_PGRP: 1635 /* could do this by traversing pgrp */ 1636 if (p->p_pgrp->pg_id != (pid_t)arg) 1637 continue; 1638 break; 1639 1640 case KERN_PROC_SESSION: 1641 if (p->p_session->s_sid != (pid_t)arg) 1642 continue; 1643 break; 1644 1645 case KERN_PROC_TTY: 1646 if (arg == (int) KERN_PROC_TTY_REVOKE) { 1647 if ((p->p_flag & P_CONTROLT) == 0 || 1648 p->p_session->s_ttyp == NULL || 1649 p->p_session->s_ttyvp != NULL) 1650 continue; 1651 } else if ((p->p_flag & P_CONTROLT) == 0 || 1652 p->p_session->s_ttyp == NULL) { 1653 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1654 continue; 1655 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1656 continue; 1657 break; 1658 1659 case KERN_PROC_UID: 1660 if (p->p_ucred->cr_uid != (uid_t)arg) 1661 continue; 1662 break; 1663 1664 case KERN_PROC_RUID: 1665 if (p->p_cred->p_ruid != (uid_t)arg) 1666 continue; 1667 break; 1668 1669 case KERN_PROC_GID: 1670 if (p->p_ucred->cr_gid != (uid_t)arg) 1671 continue; 1672 break; 1673 1674 case KERN_PROC_RGID: 1675 if (p->p_cred->p_rgid != (uid_t)arg) 1676 continue; 1677 break; 1678 1679 case KERN_PROC_ALL: 1680 /* allow everything */ 1681 break; 1682 1683 default: 1684 error = EINVAL; 1685 goto cleanup; 1686 } 1687 if (type == KERN_PROC) { 1688 if (buflen >= sizeof(struct kinfo_proc)) { 1689 fill_eproc(p, &eproc); 1690 error = copyout(p, &dp->kp_proc, 1691 sizeof(struct proc)); 1692 if (error) 1693 goto cleanup; 1694 error = copyout(&eproc, &dp->kp_eproc, 1695 sizeof(eproc)); 1696 if (error) 1697 goto cleanup; 1698 dp++; 1699 buflen -= sizeof(struct kinfo_proc); 1700 } 1701 needed += sizeof(struct kinfo_proc); 1702 } else { /* KERN_PROC2 */ 1703 if (buflen >= elem_size && elem_count > 0) { 1704 fill_kproc2(p, &kproc2); 1705 /* 1706 * Copy out elem_size, but not larger than 1707 * the size of a struct kinfo_proc2. 1708 */ 1709 error = copyout(&kproc2, dp2, 1710 min(sizeof(kproc2), elem_size)); 1711 if (error) 1712 goto cleanup; 1713 dp2 += elem_size; 1714 buflen -= elem_size; 1715 elem_count--; 1716 } 1717 needed += elem_size; 1718 } 1719 } 1720 pd++; 1721 if (pd->pd_list != NULL) 1722 goto again; 1723 proclist_unlock_read(); 1724 1725 if (where != NULL) { 1726 if (type == KERN_PROC) 1727 *oldlenp = (char *)dp - where; 1728 else 1729 *oldlenp = dp2 - where; 1730 if (needed > *oldlenp) 1731 return (ENOMEM); 1732 } else { 1733 needed += KERN_LWPSLOP; 1734 *oldlenp = needed; 1735 } 1736 return (0); 1737 cleanup: 1738 proclist_unlock_read(); 1739 return (error); 1740 } 1741 1742 /* 1743 * sysctl helper routine for kern.proc_args pseudo-subtree. 1744 */ 1745 static int 1746 sysctl_kern_proc_args(SYSCTLFN_ARGS) 1747 { 1748 struct ps_strings pss; 1749 struct proc *p, *up = l->l_proc; 1750 size_t len, upper_bound, xlen, i; 1751 struct uio auio; 1752 struct iovec aiov; 1753 vaddr_t argv; 1754 pid_t pid; 1755 int nargv, type, error; 1756 char *arg; 1757 char *tmp; 1758 1759 if (newp != NULL || namelen != 2) 1760 return (EINVAL); 1761 pid = name[0]; 1762 type = name[1]; 1763 1764 switch (type) { 1765 case KERN_PROC_ARGV: 1766 case KERN_PROC_NARGV: 1767 case KERN_PROC_ENV: 1768 case KERN_PROC_NENV: 1769 /* ok */ 1770 break; 1771 default: 1772 return (EINVAL); 1773 } 1774 1775 /* check pid */ 1776 if ((p = pfind(pid)) == NULL) 1777 return (EINVAL); 1778 1779 /* only root or same user change look at the environment */ 1780 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1781 if (up->p_ucred->cr_uid != 0) { 1782 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1783 up->p_cred->p_ruid != p->p_cred->p_svuid) 1784 return (EPERM); 1785 } 1786 } 1787 1788 if (oldp == NULL) { 1789 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1790 *oldlenp = sizeof (int); 1791 else 1792 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 1793 return (0); 1794 } 1795 1796 /* 1797 * Zombies don't have a stack, so we can't read their psstrings. 1798 * System processes also don't have a user stack. 1799 */ 1800 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1801 return (EINVAL); 1802 1803 /* 1804 * Lock the process down in memory. 1805 */ 1806 /* XXXCDC: how should locking work here? */ 1807 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1808 return (EFAULT); 1809 1810 p->p_vmspace->vm_refcnt++; /* XXX */ 1811 1812 /* 1813 * Allocate a temporary buffer to hold the arguments. 1814 */ 1815 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1816 1817 /* 1818 * Read in the ps_strings structure. 1819 */ 1820 aiov.iov_base = &pss; 1821 aiov.iov_len = sizeof(pss); 1822 auio.uio_iov = &aiov; 1823 auio.uio_iovcnt = 1; 1824 auio.uio_offset = (vaddr_t)p->p_psstr; 1825 auio.uio_resid = sizeof(pss); 1826 auio.uio_segflg = UIO_SYSSPACE; 1827 auio.uio_rw = UIO_READ; 1828 auio.uio_procp = NULL; 1829 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1830 if (error) 1831 goto done; 1832 1833 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1834 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1835 else 1836 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1837 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1838 error = copyout(&nargv, oldp, sizeof(nargv)); 1839 *oldlenp = sizeof(nargv); 1840 goto done; 1841 } 1842 /* 1843 * Now read the address of the argument vector. 1844 */ 1845 switch (type) { 1846 case KERN_PROC_ARGV: 1847 /* XXX compat32 stuff here */ 1848 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1849 break; 1850 case KERN_PROC_ENV: 1851 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1852 break; 1853 default: 1854 return (EINVAL); 1855 } 1856 auio.uio_offset = (off_t)(long)tmp; 1857 aiov.iov_base = &argv; 1858 aiov.iov_len = sizeof(argv); 1859 auio.uio_iov = &aiov; 1860 auio.uio_iovcnt = 1; 1861 auio.uio_resid = sizeof(argv); 1862 auio.uio_segflg = UIO_SYSSPACE; 1863 auio.uio_rw = UIO_READ; 1864 auio.uio_procp = NULL; 1865 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1866 if (error) 1867 goto done; 1868 1869 /* 1870 * Now copy in the actual argument vector, one page at a time, 1871 * since we don't know how long the vector is (though, we do 1872 * know how many NUL-terminated strings are in the vector). 1873 */ 1874 len = 0; 1875 upper_bound = *oldlenp; 1876 for (; nargv != 0 && len < upper_bound; len += xlen) { 1877 aiov.iov_base = arg; 1878 aiov.iov_len = PAGE_SIZE; 1879 auio.uio_iov = &aiov; 1880 auio.uio_iovcnt = 1; 1881 auio.uio_offset = argv + len; 1882 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1883 auio.uio_resid = xlen; 1884 auio.uio_segflg = UIO_SYSSPACE; 1885 auio.uio_rw = UIO_READ; 1886 auio.uio_procp = NULL; 1887 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1888 if (error) 1889 goto done; 1890 1891 for (i = 0; i < xlen && nargv != 0; i++) { 1892 if (arg[i] == '\0') 1893 nargv--; /* one full string */ 1894 } 1895 1896 /* 1897 * Make sure we don't copyout past the end of the user's 1898 * buffer. 1899 */ 1900 if (len + i > upper_bound) 1901 i = upper_bound - len; 1902 1903 error = copyout(arg, (char *)oldp + len, i); 1904 if (error) 1905 break; 1906 1907 if (nargv == 0) { 1908 len += i; 1909 break; 1910 } 1911 } 1912 *oldlenp = len; 1913 1914 done: 1915 uvmspace_free(p->p_vmspace); 1916 1917 free(arg, M_TEMP); 1918 return (error); 1919 } 1920 1921 /* 1922 * sysctl helper routine for hw.usermem and hw.usermem64. values are 1923 * calculate on the fly taking into account integer overflow and the 1924 * current wired count. 1925 */ 1926 static int 1927 sysctl_hw_usermem(SYSCTLFN_ARGS) 1928 { 1929 u_int ui; 1930 u_quad_t uq; 1931 struct sysctlnode node; 1932 1933 node = *rnode; 1934 switch (rnode->sysctl_num) { 1935 case HW_USERMEM: 1936 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1937 ui = UINT_MAX; 1938 else 1939 ui *= PAGE_SIZE; 1940 node.sysctl_data = &ui; 1941 break; 1942 case HW_USERMEM64: 1943 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1944 node.sysctl_data = &uq; 1945 break; 1946 default: 1947 return (EINVAL); 1948 } 1949 1950 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1951 } 1952 1953 /* 1954 * sysctl helper routine for kern.cnmagic node. pulls the old value 1955 * out, encoded, and stuffs the new value in for decoding. 1956 */ 1957 static int 1958 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 1959 { 1960 char magic[CNS_LEN]; 1961 int error; 1962 struct sysctlnode node; 1963 1964 if (oldp) 1965 cn_get_magic(magic, CNS_LEN); 1966 node = *rnode; 1967 node.sysctl_data = &magic[0]; 1968 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1969 if (error || newp == NULL) 1970 return (error); 1971 1972 return (cn_set_magic(magic)); 1973 } 1974 1975 static int 1976 sysctl_hw_ncpu(SYSCTLFN_ARGS) 1977 { 1978 int ncpu; 1979 struct sysctlnode node; 1980 1981 ncpu = sysctl_ncpus(); 1982 node = *rnode; 1983 node.sysctl_data = &ncpu; 1984 1985 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1986 } 1987 1988 1989 /* 1990 * ******************************************************************** 1991 * section 3: public helper routines that are used for more than one 1992 * node 1993 * ******************************************************************** 1994 */ 1995 1996 /* 1997 * sysctl helper routine for the kern.root_device node and some ports' 1998 * machdep.root_device nodes. 1999 */ 2000 int 2001 sysctl_root_device(SYSCTLFN_ARGS) 2002 { 2003 struct sysctlnode node; 2004 2005 node = *rnode; 2006 node.sysctl_data = root_device->dv_xname; 2007 node.sysctl_size = strlen(root_device->dv_xname) + 1; 2008 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2009 } 2010 2011 /* 2012 * sysctl helper routine for kern.consdev, dependent on the current 2013 * state of the console. also used for machdep.console_device on some 2014 * ports. 2015 */ 2016 int 2017 sysctl_consdev(SYSCTLFN_ARGS) 2018 { 2019 dev_t consdev; 2020 struct sysctlnode node; 2021 2022 if (cn_tab != NULL) 2023 consdev = cn_tab->cn_dev; 2024 else 2025 consdev = NODEV; 2026 node = *rnode; 2027 node.sysctl_data = &consdev; 2028 node.sysctl_size = sizeof(consdev); 2029 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2030 } 2031 2032 /* 2033 * ******************************************************************** 2034 * section 4: support for some helpers 2035 * ******************************************************************** 2036 */ 2037 2038 /* 2039 * Fill in a kinfo_proc2 structure for the specified process. 2040 */ 2041 static void 2042 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 2043 { 2044 struct tty *tp; 2045 struct lwp *l; 2046 struct timeval ut, st; 2047 2048 memset(ki, 0, sizeof(*ki)); 2049 2050 ki->p_paddr = PTRTOINT64(p); 2051 ki->p_fd = PTRTOINT64(p->p_fd); 2052 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 2053 ki->p_stats = PTRTOINT64(p->p_stats); 2054 ki->p_limit = PTRTOINT64(p->p_limit); 2055 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 2056 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 2057 ki->p_sess = PTRTOINT64(p->p_session); 2058 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2059 ki->p_ru = PTRTOINT64(p->p_ru); 2060 2061 ki->p_eflag = 0; 2062 ki->p_exitsig = p->p_exitsig; 2063 ki->p_flag = p->p_flag; 2064 2065 ki->p_pid = p->p_pid; 2066 if (p->p_pptr) 2067 ki->p_ppid = p->p_pptr->p_pid; 2068 else 2069 ki->p_ppid = 0; 2070 ki->p_sid = p->p_session->s_sid; 2071 ki->p__pgid = p->p_pgrp->pg_id; 2072 2073 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2074 2075 ki->p_uid = p->p_ucred->cr_uid; 2076 ki->p_ruid = p->p_cred->p_ruid; 2077 ki->p_gid = p->p_ucred->cr_gid; 2078 ki->p_rgid = p->p_cred->p_rgid; 2079 ki->p_svuid = p->p_cred->p_svuid; 2080 ki->p_svgid = p->p_cred->p_svgid; 2081 2082 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 2083 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 2084 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 2085 2086 ki->p_jobc = p->p_pgrp->pg_jobc; 2087 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 2088 ki->p_tdev = tp->t_dev; 2089 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2090 ki->p_tsess = PTRTOINT64(tp->t_session); 2091 } else { 2092 ki->p_tdev = NODEV; 2093 } 2094 2095 ki->p_estcpu = p->p_estcpu; 2096 ki->p_rtime_sec = p->p_rtime.tv_sec; 2097 ki->p_rtime_usec = p->p_rtime.tv_usec; 2098 ki->p_cpticks = p->p_cpticks; 2099 ki->p_pctcpu = p->p_pctcpu; 2100 2101 ki->p_uticks = p->p_uticks; 2102 ki->p_sticks = p->p_sticks; 2103 ki->p_iticks = p->p_iticks; 2104 2105 ki->p_tracep = PTRTOINT64(p->p_tracep); 2106 ki->p_traceflag = p->p_traceflag; 2107 2108 2109 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 2110 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 2111 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2112 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2113 2114 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2115 ki->p_realstat = p->p_stat; 2116 ki->p_nice = p->p_nice; 2117 2118 ki->p_xstat = p->p_xstat; 2119 ki->p_acflag = p->p_acflag; 2120 2121 strncpy(ki->p_comm, p->p_comm, 2122 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2123 2124 strncpy(ki->p_login, p->p_session->s_login, 2125 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 2126 2127 ki->p_nlwps = p->p_nlwps; 2128 ki->p_nrlwps = p->p_nrlwps; 2129 ki->p_realflag = p->p_flag; 2130 2131 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2132 ki->p_vm_rssize = 0; 2133 ki->p_vm_tsize = 0; 2134 ki->p_vm_dsize = 0; 2135 ki->p_vm_ssize = 0; 2136 l = NULL; 2137 } else { 2138 struct vmspace *vm = p->p_vmspace; 2139 2140 ki->p_vm_rssize = vm_resident_count(vm); 2141 ki->p_vm_tsize = vm->vm_tsize; 2142 ki->p_vm_dsize = vm->vm_dsize; 2143 ki->p_vm_ssize = vm->vm_ssize; 2144 2145 /* Pick a "representative" LWP */ 2146 l = proc_representative_lwp(p); 2147 ki->p_forw = PTRTOINT64(l->l_forw); 2148 ki->p_back = PTRTOINT64(l->l_back); 2149 ki->p_addr = PTRTOINT64(l->l_addr); 2150 ki->p_stat = l->l_stat; 2151 ki->p_flag |= l->l_flag; 2152 ki->p_swtime = l->l_swtime; 2153 ki->p_slptime = l->l_slptime; 2154 if (l->l_stat == LSONPROC) { 2155 KDASSERT(l->l_cpu != NULL); 2156 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2157 } else 2158 ki->p_schedflags = 0; 2159 ki->p_holdcnt = l->l_holdcnt; 2160 ki->p_priority = l->l_priority; 2161 ki->p_usrpri = l->l_usrpri; 2162 if (l->l_wmesg) 2163 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 2164 ki->p_wchan = PTRTOINT64(l->l_wchan); 2165 2166 } 2167 2168 if (p->p_session->s_ttyvp) 2169 ki->p_eflag |= EPROC_CTTY; 2170 if (SESS_LEADER(p)) 2171 ki->p_eflag |= EPROC_SLEADER; 2172 2173 /* XXX Is this double check necessary? */ 2174 if (P_ZOMBIE(p)) { 2175 ki->p_uvalid = 0; 2176 } else { 2177 ki->p_uvalid = 1; 2178 2179 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 2180 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 2181 2182 calcru(p, &ut, &st, 0); 2183 ki->p_uutime_sec = ut.tv_sec; 2184 ki->p_uutime_usec = ut.tv_usec; 2185 ki->p_ustime_sec = st.tv_sec; 2186 ki->p_ustime_usec = st.tv_usec; 2187 2188 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 2189 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 2190 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 2191 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 2192 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 2193 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 2194 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 2195 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 2196 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 2197 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 2198 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 2199 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 2200 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 2201 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 2202 2203 timeradd(&p->p_stats->p_cru.ru_utime, 2204 &p->p_stats->p_cru.ru_stime, &ut); 2205 ki->p_uctime_sec = ut.tv_sec; 2206 ki->p_uctime_usec = ut.tv_usec; 2207 } 2208 #ifdef MULTIPROCESSOR 2209 if (l && l->l_cpu != NULL) 2210 ki->p_cpuid = l->l_cpu->ci_cpuid; 2211 else 2212 #endif 2213 ki->p_cpuid = KI_NOCPU; 2214 } 2215 2216 /* 2217 * Fill in a kinfo_lwp structure for the specified lwp. 2218 */ 2219 static void 2220 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 2221 { 2222 2223 kl->l_forw = PTRTOINT64(l->l_forw); 2224 kl->l_back = PTRTOINT64(l->l_back); 2225 kl->l_laddr = PTRTOINT64(l); 2226 kl->l_addr = PTRTOINT64(l->l_addr); 2227 kl->l_stat = l->l_stat; 2228 kl->l_lid = l->l_lid; 2229 kl->l_flag = l->l_flag; 2230 2231 kl->l_swtime = l->l_swtime; 2232 kl->l_slptime = l->l_slptime; 2233 if (l->l_stat == LSONPROC) { 2234 KDASSERT(l->l_cpu != NULL); 2235 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2236 } else 2237 kl->l_schedflags = 0; 2238 kl->l_holdcnt = l->l_holdcnt; 2239 kl->l_priority = l->l_priority; 2240 kl->l_usrpri = l->l_usrpri; 2241 if (l->l_wmesg) 2242 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 2243 kl->l_wchan = PTRTOINT64(l->l_wchan); 2244 #ifdef MULTIPROCESSOR 2245 if (l->l_cpu != NULL) 2246 kl->l_cpuid = l->l_cpu->ci_cpuid; 2247 else 2248 #endif 2249 kl->l_cpuid = KI_NOCPU; 2250 } 2251 2252 /* 2253 * Fill in an eproc structure for the specified process. 2254 */ 2255 void 2256 fill_eproc(struct proc *p, struct eproc *ep) 2257 { 2258 struct tty *tp; 2259 struct lwp *l; 2260 2261 ep->e_paddr = p; 2262 ep->e_sess = p->p_session; 2263 ep->e_pcred = *p->p_cred; 2264 ep->e_ucred = *p->p_ucred; 2265 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2266 ep->e_vm.vm_rssize = 0; 2267 ep->e_vm.vm_tsize = 0; 2268 ep->e_vm.vm_dsize = 0; 2269 ep->e_vm.vm_ssize = 0; 2270 /* ep->e_vm.vm_pmap = XXX; */ 2271 } else { 2272 struct vmspace *vm = p->p_vmspace; 2273 2274 ep->e_vm.vm_rssize = vm_resident_count(vm); 2275 ep->e_vm.vm_tsize = vm->vm_tsize; 2276 ep->e_vm.vm_dsize = vm->vm_dsize; 2277 ep->e_vm.vm_ssize = vm->vm_ssize; 2278 2279 /* Pick a "representative" LWP */ 2280 l = proc_representative_lwp(p); 2281 2282 if (l->l_wmesg) 2283 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 2284 } 2285 if (p->p_pptr) 2286 ep->e_ppid = p->p_pptr->p_pid; 2287 else 2288 ep->e_ppid = 0; 2289 ep->e_pgid = p->p_pgrp->pg_id; 2290 ep->e_sid = ep->e_sess->s_sid; 2291 ep->e_jobc = p->p_pgrp->pg_jobc; 2292 if ((p->p_flag & P_CONTROLT) && 2293 (tp = ep->e_sess->s_ttyp)) { 2294 ep->e_tdev = tp->t_dev; 2295 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2296 ep->e_tsess = tp->t_session; 2297 } else 2298 ep->e_tdev = NODEV; 2299 2300 ep->e_xsize = ep->e_xrssize = 0; 2301 ep->e_xccount = ep->e_xswrss = 0; 2302 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 2303 if (SESS_LEADER(p)) 2304 ep->e_flag |= EPROC_SLEADER; 2305 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 2306 } 2307
Indexes created Wed Oct 01 15:09:59 GMT 2025