init_sysctl.c revision 1.6
1 /* $NetBSD: init_sysctl.c,v 1.6 2003/12/07 10:31:32 he 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, 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, 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, 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. handles ensuring that 724 * new values never falls below 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; 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 if (new_vnodes < desiredvnodes) 741 return (EINVAL); 742 desiredvnodes = new_vnodes; 743 vfs_reinit(); 744 nchreinit(); 745 746 return (0); 747 } 748 749 /* 750 * sysctl helper routine for kern.maxvnodes. ensures that the new 751 * values are not too low or too high. 752 */ 753 static int 754 sysctl_kern_maxproc(SYSCTLFN_ARGS) 755 { 756 int error, nmaxproc; 757 struct sysctlnode node; 758 759 nmaxproc = maxproc; 760 node = *rnode; 761 node.sysctl_data = &nmaxproc; 762 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 763 if (error || newp == NULL) 764 return (error); 765 766 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 767 return (EINVAL); 768 #ifdef __HAVE_CPU_MAXPROC 769 if (nmaxproc > cpu_maxproc()) 770 return (EINVAL); 771 #endif 772 maxproc = nmaxproc; 773 774 return (0); 775 } 776 777 /* 778 * sysctl helper routine for kern.securelevel. ensures that the value 779 * only rises unless the caller has pid 1 (assumed to be init). 780 */ 781 static int 782 sysctl_kern_securelevel(SYSCTLFN_ARGS) 783 { 784 int newsecurelevel, error; 785 struct sysctlnode node; 786 787 newsecurelevel = securelevel; 788 node = *rnode; 789 node.sysctl_data = &newsecurelevel; 790 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 791 if (error || newp == NULL) 792 return (error); 793 794 if (newsecurelevel < securelevel && l->l_proc->p_pid != 1) 795 return (EPERM); 796 securelevel = newsecurelevel; 797 798 return (error); 799 } 800 801 /* 802 * sysctl helper function for kern.hostid. the hostid is a long, but 803 * we export it as an int, so we need to give it a little help. 804 */ 805 static int 806 sysctl_kern_hostid(SYSCTLFN_ARGS) 807 { 808 int error, inthostid; 809 struct sysctlnode node; 810 811 inthostid = hostid; /* XXX assumes sizeof int >= sizeof long */ 812 node = *rnode; 813 node.sysctl_data = &inthostid; 814 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 815 if (error || newp == NULL) 816 return (error); 817 818 hostid = inthostid; 819 820 return (0); 821 } 822 823 /* 824 * sysctl helper routine for kern.clockrate. assembles a struct on 825 * the fly to be returned to the caller. 826 */ 827 static int 828 sysctl_kern_clockrate(SYSCTLFN_ARGS) 829 { 830 struct clockinfo clkinfo; 831 struct sysctlnode node; 832 833 clkinfo.tick = tick; 834 clkinfo.tickadj = tickadj; 835 clkinfo.hz = hz; 836 clkinfo.profhz = profhz; 837 clkinfo.stathz = stathz ? stathz : hz; 838 839 node = *rnode; 840 node.sysctl_data = &clkinfo; 841 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 842 } 843 844 845 /* 846 * sysctl helper routine for kern.file pseudo-subtree. 847 */ 848 static int 849 sysctl_kern_file(SYSCTLFN_ARGS) 850 { 851 int error; 852 size_t buflen; 853 struct file *fp; 854 char *start, *where; 855 856 start = where = oldp; 857 buflen = *oldlenp; 858 if (where == NULL) { 859 /* 860 * overestimate by 10 files 861 */ 862 *oldlenp = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 863 return (0); 864 } 865 866 /* 867 * first copyout filehead 868 */ 869 if (buflen < sizeof(filehead)) { 870 *oldlenp = 0; 871 return (0); 872 } 873 error = copyout(&filehead, where, sizeof(filehead)); 874 if (error) 875 return (error); 876 buflen -= sizeof(filehead); 877 where += sizeof(filehead); 878 879 /* 880 * followed by an array of file structures 881 */ 882 LIST_FOREACH(fp, &filehead, f_list) { 883 if (buflen < sizeof(struct file)) { 884 *oldlenp = where - start; 885 return (ENOMEM); 886 } 887 error = copyout(fp, where, sizeof(struct file)); 888 if (error) 889 return (error); 890 buflen -= sizeof(struct file); 891 where += sizeof(struct file); 892 } 893 *oldlenp = where - start; 894 return (0); 895 } 896 897 /* 898 * sysctl helper routine for kern.autonicetime and kern.autoniceval. 899 * asserts that the assigned value is in the correct range. 900 */ 901 static int 902 sysctl_kern_autonice(SYSCTLFN_ARGS) 903 { 904 int error, t = 0; 905 struct sysctlnode node; 906 907 node = *rnode; 908 t = *(int*)node.sysctl_data; 909 node.sysctl_data = &t; 910 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 911 if (error || newp == NULL) 912 return (error); 913 914 switch (node.sysctl_num) { 915 case KERN_AUTONICETIME: 916 if (t >= 0) 917 autonicetime = t; 918 break; 919 case KERN_AUTONICEVAL: 920 if (t < PRIO_MIN) 921 t = PRIO_MIN; 922 else if (t > PRIO_MAX) 923 t = PRIO_MAX; 924 autoniceval = t; 925 break; 926 } 927 928 return (0); 929 } 930 931 /* 932 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. for the 933 * former it merely checks the the message buffer is set up. for the 934 * latter, it also copies out the data if necessary. 935 */ 936 static int 937 sysctl_msgbuf(SYSCTLFN_ARGS) 938 { 939 char *where = oldp; 940 size_t len, maxlen; 941 long beg, end; 942 int error; 943 944 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 945 msgbufenabled = 0; 946 return (ENXIO); 947 } 948 949 switch (rnode->sysctl_num) { 950 case KERN_MSGBUFSIZE: 951 return (sysctl_lookup(SYSCTLFN_CALL(rnode))); 952 case KERN_MSGBUF: 953 break; 954 default: 955 return (EOPNOTSUPP); 956 } 957 958 if (newp != NULL) 959 return (EPERM); 960 961 if (oldp == NULL) { 962 /* always return full buffer size */ 963 *oldlenp = msgbufp->msg_bufs; 964 return (0); 965 } 966 967 error = 0; 968 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 969 970 /* 971 * First, copy from the write pointer to the end of 972 * message buffer. 973 */ 974 beg = msgbufp->msg_bufx; 975 end = msgbufp->msg_bufs; 976 while (maxlen > 0) { 977 len = MIN(end - beg, maxlen); 978 if (len == 0) 979 break; 980 error = copyout(&msgbufp->msg_bufc[beg], where, len); 981 if (error) 982 break; 983 where += len; 984 maxlen -= len; 985 986 /* 987 * ... then, copy from the beginning of message buffer to 988 * the write pointer. 989 */ 990 beg = 0; 991 end = msgbufp->msg_bufx; 992 } 993 994 return (error); 995 } 996 997 /* 998 * sysctl helper routine for kern.defcorename. in the case of a new 999 * string being assigned, check that it's not a zero-length string. 1000 * (XXX the check in -current doesn't work, but do we really care?) 1001 */ 1002 static int 1003 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1004 { 1005 int error; 1006 char newcorename[MAXPATHLEN]; 1007 struct sysctlnode node; 1008 1009 node = *rnode; 1010 node.sysctl_data = &newcorename[0]; 1011 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1012 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1013 if (error || newp == NULL) 1014 return (error); 1015 1016 /* 1017 * when sysctl_lookup() deals with a string, it's guaranteed 1018 * to come back nul terminated. so there. :) 1019 */ 1020 if (strlen(newcorename) == 0) 1021 return (EINVAL); 1022 1023 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1024 1025 return (0); 1026 } 1027 1028 /* 1029 * sysctl helper routine for kern.cp_time node. adds up cpu time 1030 * across all cpus. 1031 */ 1032 static int 1033 sysctl_kern_cptime(SYSCTLFN_ARGS) 1034 { 1035 struct sysctlnode node = *rnode; 1036 1037 #ifndef MULTIPROCESSOR 1038 1039 if (namelen == 1 && name[0] == 0) { 1040 /* 1041 * you're allowed to ask for the zero'th processor 1042 */ 1043 name++; 1044 namelen--; 1045 } 1046 node.sysctl_data = curcpu()->ci_schedstate.spc_cp_time; 1047 node.sysctl_size = sizeof(curcpu()->ci_schedstate.spc_cp_time); 1048 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1049 1050 #else /* MULTIPROCESSOR */ 1051 1052 u_int64_t *cp_time = NULL; 1053 int error, n = sysctl_ncpus(), i; 1054 struct cpu_info *ci; 1055 CPU_INFO_ITERATOR cii; 1056 1057 /* 1058 * if you specifically pass a buffer that is the size of the 1059 * sum, or if you are probing for the size, you get the "sum" 1060 * of cp_time (and the size thereof) across all processors. 1061 * 1062 * alternately, you can pass an additional mib number and get 1063 * cp_time for that particular processor. 1064 */ 1065 switch (namelen) { 1066 case 0: 1067 if (*oldlenp == sizeof(u_int64_t) * CPUSTATES || oldp == NULL) { 1068 node.sysctl_size = sizeof(u_int64_t) * CPUSTATES; 1069 n = -1; /* SUM */ 1070 } 1071 else { 1072 node.sysctl_size = n * sizeof(u_int64_t) * CPUSTATES; 1073 n = -2; /* ALL */ 1074 } 1075 break; 1076 case 1: 1077 if (name[0] < 0 || name[0] >= n) 1078 return (EINVAL); /* ENOSUCHPROCESSOR */ 1079 node.sysctl_size = sizeof(u_int64_t) * CPUSTATES; 1080 n = name[0]; 1081 /* 1082 * adjust these so that sysctl_lookup() will be happy 1083 */ 1084 name++; 1085 namelen--; 1086 default: 1087 return (EINVAL); 1088 } 1089 1090 cp_time = malloc(node.sysctl_size, M_TEMP, M_WAITOK|M_CANFAIL); 1091 if (cp_time == NULL) 1092 return (ENOMEM); 1093 node.sysctl_data = cp_time; 1094 memset(cp_time, 0, node.sysctl_size); 1095 1096 for (CPU_INFO_FOREACH(cii, ci)) { 1097 if (n <= 0) 1098 for (i = 0; i < CPUSTATES; i++) 1099 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1100 /* 1101 * if a specific processor was requested and we just 1102 * did it, we're done here 1103 */ 1104 if (n == 0) 1105 break; 1106 /* 1107 * if doing "all", skip to next cp_time set for next processor 1108 */ 1109 if (n == -2) 1110 cp_time += CPUSTATES; 1111 /* 1112 * if we're doing a specific processor, we're one 1113 * processor closer 1114 */ 1115 if (n > 0) 1116 n--; 1117 } 1118 1119 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1120 free(node.sysctl_data, M_TEMP); 1121 return (error); 1122 1123 #endif /* MULTIPROCESSOR */ 1124 } 1125 1126 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1127 /* 1128 * sysctl helper routine for kern.sysvipc_info subtree. 1129 */ 1130 1131 #define FILL_PERM(src, dst) do { \ 1132 (dst)._key = (src)._key; \ 1133 (dst).uid = (src).uid; \ 1134 (dst).gid = (src).gid; \ 1135 (dst).cuid = (src).cuid; \ 1136 (dst).cgid = (src).cgid; \ 1137 (dst).mode = (src).mode; \ 1138 (dst)._seq = (src)._seq; \ 1139 } while (/*CONSTCOND*/ 0); 1140 #define FILL_MSG(src, dst) do { \ 1141 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1142 (dst).msg_qnum = (src).msg_qnum; \ 1143 (dst).msg_qbytes = (src).msg_qbytes; \ 1144 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1145 (dst).msg_lspid = (src).msg_lspid; \ 1146 (dst).msg_lrpid = (src).msg_lrpid; \ 1147 (dst).msg_stime = (src).msg_stime; \ 1148 (dst).msg_rtime = (src).msg_rtime; \ 1149 (dst).msg_ctime = (src).msg_ctime; \ 1150 } while (/*CONSTCOND*/ 0) 1151 #define FILL_SEM(src, dst) do { \ 1152 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1153 (dst).sem_nsems = (src).sem_nsems; \ 1154 (dst).sem_otime = (src).sem_otime; \ 1155 (dst).sem_ctime = (src).sem_ctime; \ 1156 } while (/*CONSTCOND*/ 0) 1157 #define FILL_SHM(src, dst) do { \ 1158 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1159 (dst).shm_segsz = (src).shm_segsz; \ 1160 (dst).shm_lpid = (src).shm_lpid; \ 1161 (dst).shm_cpid = (src).shm_cpid; \ 1162 (dst).shm_atime = (src).shm_atime; \ 1163 (dst).shm_dtime = (src).shm_dtime; \ 1164 (dst).shm_ctime = (src).shm_ctime; \ 1165 (dst).shm_nattch = (src).shm_nattch; \ 1166 } while (/*CONSTCOND*/ 0) 1167 1168 static int 1169 sysctl_kern_sysvipc(SYSCTLFN_ARGS) 1170 { 1171 void *where = oldp; 1172 size_t *sizep = oldlenp; 1173 #ifdef SYSVMSG 1174 struct msg_sysctl_info *msgsi = NULL; 1175 #endif 1176 #ifdef SYSVSEM 1177 struct sem_sysctl_info *semsi = NULL; 1178 #endif 1179 #ifdef SYSVSHM 1180 struct shm_sysctl_info *shmsi = NULL; 1181 #endif 1182 size_t infosize, dssize, tsize, buflen; 1183 void *buf = NULL; 1184 char *start; 1185 int32_t nds; 1186 int i, error, ret; 1187 1188 if (namelen != 1) 1189 return (EINVAL); 1190 1191 start = where; 1192 buflen = *sizep; 1193 1194 switch (*name) { 1195 case KERN_SYSVIPC_MSG_INFO: 1196 #ifdef SYSVMSG 1197 infosize = sizeof(msgsi->msginfo); 1198 nds = msginfo.msgmni; 1199 dssize = sizeof(msgsi->msgids[0]); 1200 break; 1201 #else 1202 return (EINVAL); 1203 #endif 1204 case KERN_SYSVIPC_SEM_INFO: 1205 #ifdef SYSVSEM 1206 infosize = sizeof(semsi->seminfo); 1207 nds = seminfo.semmni; 1208 dssize = sizeof(semsi->semids[0]); 1209 break; 1210 #else 1211 return (EINVAL); 1212 #endif 1213 case KERN_SYSVIPC_SHM_INFO: 1214 #ifdef SYSVSHM 1215 infosize = sizeof(shmsi->shminfo); 1216 nds = shminfo.shmmni; 1217 dssize = sizeof(shmsi->shmids[0]); 1218 break; 1219 #else 1220 return (EINVAL); 1221 #endif 1222 default: 1223 return (EINVAL); 1224 } 1225 /* 1226 * Round infosize to 64 bit boundary if requesting more than just 1227 * the info structure or getting the total data size. 1228 */ 1229 if (where == NULL || *sizep > infosize) 1230 infosize = ((infosize + 7) / 8) * 8; 1231 tsize = infosize + nds * dssize; 1232 1233 /* Return just the total size required. */ 1234 if (where == NULL) { 1235 *sizep = tsize; 1236 return (0); 1237 } 1238 1239 /* Not enough room for even the info struct. */ 1240 if (buflen < infosize) { 1241 *sizep = 0; 1242 return (ENOMEM); 1243 } 1244 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1245 memset(buf, 0, min(tsize, buflen)); 1246 1247 switch (*name) { 1248 #ifdef SYSVMSG 1249 case KERN_SYSVIPC_MSG_INFO: 1250 msgsi = (struct msg_sysctl_info *)buf; 1251 msgsi->msginfo = msginfo; 1252 break; 1253 #endif 1254 #ifdef SYSVSEM 1255 case KERN_SYSVIPC_SEM_INFO: 1256 semsi = (struct sem_sysctl_info *)buf; 1257 semsi->seminfo = seminfo; 1258 break; 1259 #endif 1260 #ifdef SYSVSHM 1261 case KERN_SYSVIPC_SHM_INFO: 1262 shmsi = (struct shm_sysctl_info *)buf; 1263 shmsi->shminfo = shminfo; 1264 break; 1265 #endif 1266 } 1267 buflen -= infosize; 1268 1269 ret = 0; 1270 if (buflen > 0) { 1271 /* Fill in the IPC data structures. */ 1272 for (i = 0; i < nds; i++) { 1273 if (buflen < dssize) { 1274 ret = ENOMEM; 1275 break; 1276 } 1277 switch (*name) { 1278 #ifdef SYSVMSG 1279 case KERN_SYSVIPC_MSG_INFO: 1280 FILL_MSG(msqids[i], msgsi->msgids[i]); 1281 break; 1282 #endif 1283 #ifdef SYSVSEM 1284 case KERN_SYSVIPC_SEM_INFO: 1285 FILL_SEM(sema[i], semsi->semids[i]); 1286 break; 1287 #endif 1288 #ifdef SYSVSHM 1289 case KERN_SYSVIPC_SHM_INFO: 1290 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1291 break; 1292 #endif 1293 } 1294 buflen -= dssize; 1295 } 1296 } 1297 *sizep -= buflen; 1298 error = copyout(buf, start, *sizep); 1299 /* If copyout succeeded, use return code set earlier. */ 1300 if (error == 0) 1301 error = ret; 1302 if (buf) 1303 free(buf, M_TEMP); 1304 return (error); 1305 } 1306 1307 #undef FILL_PERM 1308 #undef FILL_MSG 1309 #undef FILL_SEM 1310 #undef FILL_SHM 1311 1312 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 1313 1314 #if NPTY > 0 1315 /* 1316 * sysctl helper routine for kern.maxptys. ensures that any new value 1317 * is acceptable to the pty subsystem. 1318 */ 1319 static int 1320 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1321 { 1322 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1323 int error, max; 1324 struct sysctlnode node; 1325 1326 /* get current value of maxptys */ 1327 max = pty_maxptys(0, 0); 1328 1329 node = *rnode; 1330 node.sysctl_data = &max; 1331 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1332 if (error || newp == NULL) 1333 return (error); 1334 1335 if (max != pty_maxptys(max, 1)) 1336 return (EINVAL); 1337 1338 return (0); 1339 } 1340 #endif /* NPTY > 0 */ 1341 1342 /* 1343 * sysctl helper routine for kern.sbmax. basically just ensures that 1344 * any new value is not too small. 1345 */ 1346 static int 1347 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1348 { 1349 int error, new_sbmax; 1350 struct sysctlnode node; 1351 1352 new_sbmax = sb_max; 1353 node = *rnode; 1354 node.sysctl_data = &new_sbmax; 1355 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1356 if (error || newp == NULL) 1357 return (error); 1358 1359 error = sb_max_set(new_sbmax); 1360 1361 return (error); 1362 } 1363 1364 /* 1365 * sysctl helper routine for kern.urandom node. picks a random number 1366 * for you. 1367 */ 1368 static int 1369 sysctl_kern_urnd(SYSCTLFN_ARGS) 1370 { 1371 #if NRND > 0 1372 int v; 1373 1374 if (rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY) == sizeof(v)) { 1375 struct sysctlnode node = *rnode; 1376 node.sysctl_data = &v; 1377 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1378 } 1379 else 1380 return (EIO); /*XXX*/ 1381 #else 1382 return (EOPNOTSUPP); 1383 #endif 1384 } 1385 1386 /* 1387 * sysctl helper routine to do kern.lwp.* work. 1388 */ 1389 static int 1390 sysctl_kern_lwp(SYSCTLFN_ARGS) 1391 { 1392 struct kinfo_lwp klwp; 1393 struct proc *p; 1394 struct lwp *l2; 1395 char *where, *dp; 1396 int pid, elem_size, elem_count; 1397 int buflen, needed, error; 1398 1399 dp = where = oldp; 1400 buflen = where != NULL ? *oldlenp : 0; 1401 error = needed = 0; 1402 1403 if (newp != NULL || namelen != 4) 1404 return (EINVAL); 1405 pid = name[1]; 1406 elem_size = name[2]; 1407 elem_count = name[3]; 1408 1409 p = pfind(pid); 1410 if (p == NULL) 1411 return (ESRCH); 1412 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1413 if (buflen >= elem_size && elem_count > 0) { 1414 fill_lwp(l2, &klwp); 1415 /* 1416 * Copy out elem_size, but not larger than 1417 * the size of a struct kinfo_proc2. 1418 */ 1419 error = copyout(&klwp, dp, 1420 min(sizeof(klwp), elem_size)); 1421 if (error) 1422 goto cleanup; 1423 dp += elem_size; 1424 buflen -= elem_size; 1425 elem_count--; 1426 } 1427 needed += elem_size; 1428 } 1429 1430 if (where != NULL) { 1431 *oldlenp = dp - where; 1432 if (needed > *oldlenp) 1433 return (ENOMEM); 1434 } else { 1435 needed += KERN_PROCSLOP; 1436 *oldlenp = needed; 1437 } 1438 return (0); 1439 cleanup: 1440 return (error); 1441 } 1442 1443 /* 1444 * sysctl helper routine for kern.forkfsleep node. ensures that the 1445 * given value is not too large or two small, and is at least one 1446 * timer tick if not zero. 1447 */ 1448 static int 1449 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1450 { 1451 /* userland sees value in ms, internally is in ticks */ 1452 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1453 int error, timo, lsleep; 1454 struct sysctlnode node; 1455 1456 lsleep = forkfsleep * 1000 / hz; 1457 node = *rnode; 1458 node.sysctl_data = &lsleep; 1459 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1460 if (error || newp == NULL) 1461 return (error); 1462 1463 /* refuse negative values, and overly 'long time' */ 1464 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1465 return (EINVAL); 1466 1467 timo = mstohz(lsleep); 1468 1469 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1470 if (lsleep != 0 && timo == 0) 1471 forkfsleep = 1; 1472 else 1473 forkfsleep = timo; 1474 1475 return (0); 1476 } 1477 1478 /* 1479 * sysctl helper routine for kern.somaxkva. ensures that the given 1480 * value is not too small. 1481 * (XXX should we maybe make sure it's not too large as well?) 1482 */ 1483 static int 1484 sysctl_kern_somaxkva(SYSCTLFN_ARGS) 1485 { 1486 int error, new_somaxkva; 1487 struct sysctlnode node; 1488 1489 new_somaxkva = somaxkva; 1490 node = *rnode; 1491 node.sysctl_data = &new_somaxkva; 1492 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1493 if (error || newp == NULL) 1494 return (error); 1495 1496 if (new_somaxkva < (16 * 1024 * 1024)) /* sanity */ 1497 return (EINVAL); 1498 somaxkva = new_somaxkva; 1499 1500 return (error); 1501 } 1502 1503 /* 1504 * sysctl helper routine for kern.root_partition 1505 */ 1506 static int 1507 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1508 { 1509 int rootpart = DISKPART(rootdev); 1510 struct sysctlnode node = *rnode; 1511 1512 node.sysctl_data = &rootpart; 1513 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1514 } 1515 1516 /* 1517 * sysctl helper function for kern.drivers 1518 */ 1519 static int 1520 sysctl_kern_drivers(SYSCTLFN_ARGS) 1521 { 1522 int error; 1523 size_t buflen; 1524 struct kinfo_drivers kd; 1525 char *start, *where; 1526 const char *dname; 1527 int i; 1528 extern struct devsw_conv *devsw_conv; 1529 extern int max_devsw_convs; 1530 1531 if (newp != NULL || namelen != 0) 1532 return (EINVAL); 1533 1534 start = where = oldp; 1535 buflen = *oldlenp; 1536 if (where == NULL) { 1537 *oldlenp = max_devsw_convs * sizeof kd; 1538 return 0; 1539 } 1540 1541 /* 1542 * An array of kinfo_drivers structures 1543 */ 1544 error = 0; 1545 for (i = 0; i < max_devsw_convs; i++) { 1546 dname = devsw_conv[i].d_name; 1547 if (dname == NULL) 1548 continue; 1549 if (buflen < sizeof kd) { 1550 error = ENOMEM; 1551 break; 1552 } 1553 kd.d_bmajor = devsw_conv[i].d_bmajor; 1554 kd.d_cmajor = devsw_conv[i].d_cmajor; 1555 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1556 error = copyout(&kd, where, sizeof kd); 1557 if (error != 0) 1558 break; 1559 buflen -= sizeof kd; 1560 where += sizeof kd; 1561 } 1562 *oldlenp = where - start; 1563 return error; 1564 } 1565 1566 static int 1567 sysctl_doeproc(SYSCTLFN_ARGS) 1568 { 1569 struct eproc eproc; 1570 struct kinfo_proc2 kproc2; 1571 struct kinfo_proc *dp; 1572 struct proc *p; 1573 const struct proclist_desc *pd; 1574 char *where, *dp2; 1575 int type, op, arg; 1576 u_int elem_size, elem_count; 1577 size_t buflen, needed; 1578 int error; 1579 1580 dp = oldp; 1581 dp2 = where = oldp; 1582 buflen = where != NULL ? *oldlenp : 0; 1583 error = 0; 1584 needed = 0; 1585 type = rnode->sysctl_num; 1586 1587 if (type == KERN_PROC) { 1588 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 1589 return (EINVAL); 1590 op = name[0]; 1591 if (op != KERN_PROC_ALL) 1592 arg = name[1]; 1593 else 1594 arg = 0; /* Quell compiler warning */ 1595 elem_size = elem_count = 0; /* Ditto */ 1596 } else { 1597 if (namelen != 4) 1598 return (EINVAL); 1599 op = name[0]; 1600 arg = name[1]; 1601 elem_size = name[2]; 1602 elem_count = name[3]; 1603 } 1604 1605 proclist_lock_read(); 1606 1607 pd = proclists; 1608 again: 1609 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1610 /* 1611 * Skip embryonic processes. 1612 */ 1613 if (p->p_stat == SIDL) 1614 continue; 1615 /* 1616 * TODO - make more efficient (see notes below). 1617 * do by session. 1618 */ 1619 switch (op) { 1620 1621 case KERN_PROC_PID: 1622 /* could do this with just a lookup */ 1623 if (p->p_pid != (pid_t)arg) 1624 continue; 1625 break; 1626 1627 case KERN_PROC_PGRP: 1628 /* could do this by traversing pgrp */ 1629 if (p->p_pgrp->pg_id != (pid_t)arg) 1630 continue; 1631 break; 1632 1633 case KERN_PROC_SESSION: 1634 if (p->p_session->s_sid != (pid_t)arg) 1635 continue; 1636 break; 1637 1638 case KERN_PROC_TTY: 1639 if (arg == (int) KERN_PROC_TTY_REVOKE) { 1640 if ((p->p_flag & P_CONTROLT) == 0 || 1641 p->p_session->s_ttyp == NULL || 1642 p->p_session->s_ttyvp != NULL) 1643 continue; 1644 } else if ((p->p_flag & P_CONTROLT) == 0 || 1645 p->p_session->s_ttyp == NULL) { 1646 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1647 continue; 1648 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1649 continue; 1650 break; 1651 1652 case KERN_PROC_UID: 1653 if (p->p_ucred->cr_uid != (uid_t)arg) 1654 continue; 1655 break; 1656 1657 case KERN_PROC_RUID: 1658 if (p->p_cred->p_ruid != (uid_t)arg) 1659 continue; 1660 break; 1661 1662 case KERN_PROC_GID: 1663 if (p->p_ucred->cr_gid != (uid_t)arg) 1664 continue; 1665 break; 1666 1667 case KERN_PROC_RGID: 1668 if (p->p_cred->p_rgid != (uid_t)arg) 1669 continue; 1670 break; 1671 1672 case KERN_PROC_ALL: 1673 /* allow everything */ 1674 break; 1675 1676 default: 1677 error = EINVAL; 1678 goto cleanup; 1679 } 1680 if (type == KERN_PROC) { 1681 if (buflen >= sizeof(struct kinfo_proc)) { 1682 fill_eproc(p, &eproc); 1683 error = copyout(p, &dp->kp_proc, 1684 sizeof(struct proc)); 1685 if (error) 1686 goto cleanup; 1687 error = copyout(&eproc, &dp->kp_eproc, 1688 sizeof(eproc)); 1689 if (error) 1690 goto cleanup; 1691 dp++; 1692 buflen -= sizeof(struct kinfo_proc); 1693 } 1694 needed += sizeof(struct kinfo_proc); 1695 } else { /* KERN_PROC2 */ 1696 if (buflen >= elem_size && elem_count > 0) { 1697 fill_kproc2(p, &kproc2); 1698 /* 1699 * Copy out elem_size, but not larger than 1700 * the size of a struct kinfo_proc2. 1701 */ 1702 error = copyout(&kproc2, dp2, 1703 min(sizeof(kproc2), elem_size)); 1704 if (error) 1705 goto cleanup; 1706 dp2 += elem_size; 1707 buflen -= elem_size; 1708 elem_count--; 1709 } 1710 needed += elem_size; 1711 } 1712 } 1713 pd++; 1714 if (pd->pd_list != NULL) 1715 goto again; 1716 proclist_unlock_read(); 1717 1718 if (where != NULL) { 1719 if (type == KERN_PROC) 1720 *oldlenp = (char *)dp - where; 1721 else 1722 *oldlenp = dp2 - where; 1723 if (needed > *oldlenp) 1724 return (ENOMEM); 1725 } else { 1726 needed += KERN_PROCSLOP; 1727 *oldlenp = needed; 1728 } 1729 return (0); 1730 cleanup: 1731 proclist_unlock_read(); 1732 return (error); 1733 } 1734 1735 /* 1736 * sysctl helper routine for kern.proc_args pseudo-subtree. 1737 */ 1738 static int 1739 sysctl_kern_proc_args(SYSCTLFN_ARGS) 1740 { 1741 struct ps_strings pss; 1742 struct proc *p, *up = l->l_proc; 1743 size_t len, upper_bound, xlen, i; 1744 struct uio auio; 1745 struct iovec aiov; 1746 vaddr_t argv; 1747 pid_t pid; 1748 int nargv, type, error; 1749 char *arg; 1750 char *tmp; 1751 1752 if (newp != NULL || namelen != 2) 1753 return (EINVAL); 1754 pid = name[0]; 1755 type = name[1]; 1756 1757 switch (type) { 1758 case KERN_PROC_ARGV: 1759 case KERN_PROC_NARGV: 1760 case KERN_PROC_ENV: 1761 case KERN_PROC_NENV: 1762 /* ok */ 1763 break; 1764 default: 1765 return (EINVAL); 1766 } 1767 1768 /* check pid */ 1769 if ((p = pfind(pid)) == NULL) 1770 return (EINVAL); 1771 1772 /* only root or same user change look at the environment */ 1773 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1774 if (up->p_ucred->cr_uid != 0) { 1775 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1776 up->p_cred->p_ruid != p->p_cred->p_svuid) 1777 return (EPERM); 1778 } 1779 } 1780 1781 if (oldp == NULL) { 1782 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1783 *oldlenp = sizeof (int); 1784 else 1785 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 1786 return (0); 1787 } 1788 1789 /* 1790 * Zombies don't have a stack, so we can't read their psstrings. 1791 * System processes also don't have a user stack. 1792 */ 1793 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1794 return (EINVAL); 1795 1796 /* 1797 * Lock the process down in memory. 1798 */ 1799 /* XXXCDC: how should locking work here? */ 1800 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1801 return (EFAULT); 1802 1803 p->p_vmspace->vm_refcnt++; /* XXX */ 1804 1805 /* 1806 * Allocate a temporary buffer to hold the arguments. 1807 */ 1808 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1809 1810 /* 1811 * Read in the ps_strings structure. 1812 */ 1813 aiov.iov_base = &pss; 1814 aiov.iov_len = sizeof(pss); 1815 auio.uio_iov = &aiov; 1816 auio.uio_iovcnt = 1; 1817 auio.uio_offset = (vaddr_t)p->p_psstr; 1818 auio.uio_resid = sizeof(pss); 1819 auio.uio_segflg = UIO_SYSSPACE; 1820 auio.uio_rw = UIO_READ; 1821 auio.uio_procp = NULL; 1822 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1823 if (error) 1824 goto done; 1825 1826 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1827 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1828 else 1829 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1830 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1831 error = copyout(&nargv, oldp, sizeof(nargv)); 1832 *oldlenp = sizeof(nargv); 1833 goto done; 1834 } 1835 /* 1836 * Now read the address of the argument vector. 1837 */ 1838 switch (type) { 1839 case KERN_PROC_ARGV: 1840 /* XXX compat32 stuff here */ 1841 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1842 break; 1843 case KERN_PROC_ENV: 1844 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1845 break; 1846 default: 1847 return (EINVAL); 1848 } 1849 auio.uio_offset = (off_t)(long)tmp; 1850 aiov.iov_base = &argv; 1851 aiov.iov_len = sizeof(argv); 1852 auio.uio_iov = &aiov; 1853 auio.uio_iovcnt = 1; 1854 auio.uio_resid = sizeof(argv); 1855 auio.uio_segflg = UIO_SYSSPACE; 1856 auio.uio_rw = UIO_READ; 1857 auio.uio_procp = NULL; 1858 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1859 if (error) 1860 goto done; 1861 1862 /* 1863 * Now copy in the actual argument vector, one page at a time, 1864 * since we don't know how long the vector is (though, we do 1865 * know how many NUL-terminated strings are in the vector). 1866 */ 1867 len = 0; 1868 upper_bound = *oldlenp; 1869 for (; nargv != 0 && len < upper_bound; len += xlen) { 1870 aiov.iov_base = arg; 1871 aiov.iov_len = PAGE_SIZE; 1872 auio.uio_iov = &aiov; 1873 auio.uio_iovcnt = 1; 1874 auio.uio_offset = argv + len; 1875 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1876 auio.uio_resid = xlen; 1877 auio.uio_segflg = UIO_SYSSPACE; 1878 auio.uio_rw = UIO_READ; 1879 auio.uio_procp = NULL; 1880 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1881 if (error) 1882 goto done; 1883 1884 for (i = 0; i < xlen && nargv != 0; i++) { 1885 if (arg[i] == '\0') 1886 nargv--; /* one full string */ 1887 } 1888 1889 /* 1890 * Make sure we don't copyout past the end of the user's 1891 * buffer. 1892 */ 1893 if (len + i > upper_bound) 1894 i = upper_bound - len; 1895 1896 error = copyout(arg, (char *)oldp + len, i); 1897 if (error) 1898 break; 1899 1900 if (nargv == 0) { 1901 len += i; 1902 break; 1903 } 1904 } 1905 *oldlenp = len; 1906 1907 done: 1908 uvmspace_free(p->p_vmspace); 1909 1910 free(arg, M_TEMP); 1911 return (error); 1912 } 1913 1914 /* 1915 * sysctl helper routine for hw.usermem and hw.usermem64. values are 1916 * calculate on the fly taking into account integer overflow and the 1917 * current wired count. 1918 */ 1919 static int 1920 sysctl_hw_usermem(SYSCTLFN_ARGS) 1921 { 1922 u_int ui; 1923 u_quad_t uq; 1924 struct sysctlnode node; 1925 1926 node = *rnode; 1927 switch (rnode->sysctl_num) { 1928 case HW_USERMEM: 1929 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1930 ui = UINT_MAX; 1931 else 1932 ui *= PAGE_SIZE; 1933 node.sysctl_data = &ui; 1934 break; 1935 case HW_USERMEM64: 1936 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1937 node.sysctl_data = &uq; 1938 break; 1939 default: 1940 return (EINVAL); 1941 } 1942 1943 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1944 } 1945 1946 /* 1947 * sysctl helper routine for kern.cnmagic node. pulls the old value 1948 * out, encoded, and stuffs the new value in for decoding. 1949 */ 1950 static int 1951 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 1952 { 1953 char magic[CNS_LEN]; 1954 int error; 1955 struct sysctlnode node; 1956 1957 if (oldp) 1958 cn_get_magic(magic, CNS_LEN); 1959 node = *rnode; 1960 node.sysctl_data = &magic[0]; 1961 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1962 if (error || newp == NULL) 1963 return (error); 1964 1965 return (cn_set_magic(magic)); 1966 } 1967 1968 static int 1969 sysctl_hw_ncpu(SYSCTLFN_ARGS) 1970 { 1971 int ncpu; 1972 struct sysctlnode node; 1973 1974 ncpu = sysctl_ncpus(); 1975 node = *rnode; 1976 node.sysctl_data = &ncpu; 1977 1978 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1979 } 1980 1981 1982 /* 1983 * ******************************************************************** 1984 * section 3: public helper routines that are used for more than one 1985 * node 1986 * ******************************************************************** 1987 */ 1988 1989 /* 1990 * sysctl helper routine for the kern.root_device node and some ports' 1991 * machdep.root_device nodes. 1992 */ 1993 int 1994 sysctl_root_device(SYSCTLFN_ARGS) 1995 { 1996 struct sysctlnode node; 1997 1998 node = *rnode; 1999 node.sysctl_data = root_device->dv_xname; 2000 node.sysctl_size = strlen(root_device->dv_xname) + 1; 2001 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2002 } 2003 2004 /* 2005 * sysctl helper routine for kern.consdev, dependent on the current 2006 * state of the console. also used for machdep.console_device on some 2007 * ports. 2008 */ 2009 int 2010 sysctl_consdev(SYSCTLFN_ARGS) 2011 { 2012 dev_t consdev; 2013 struct sysctlnode node; 2014 2015 if (cn_tab != NULL) 2016 consdev = cn_tab->cn_dev; 2017 else 2018 consdev = NODEV; 2019 node = *rnode; 2020 node.sysctl_data = &consdev; 2021 node.sysctl_size = sizeof(consdev); 2022 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2023 } 2024 2025 /* 2026 * ******************************************************************** 2027 * section 4: support for some helpers 2028 * ******************************************************************** 2029 */ 2030 2031 /* 2032 * Fill in a kinfo_proc2 structure for the specified process. 2033 */ 2034 static void 2035 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 2036 { 2037 struct tty *tp; 2038 struct lwp *l; 2039 struct timeval ut, st; 2040 2041 memset(ki, 0, sizeof(*ki)); 2042 2043 ki->p_paddr = PTRTOINT64(p); 2044 ki->p_fd = PTRTOINT64(p->p_fd); 2045 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 2046 ki->p_stats = PTRTOINT64(p->p_stats); 2047 ki->p_limit = PTRTOINT64(p->p_limit); 2048 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 2049 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 2050 ki->p_sess = PTRTOINT64(p->p_session); 2051 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2052 ki->p_ru = PTRTOINT64(p->p_ru); 2053 2054 ki->p_eflag = 0; 2055 ki->p_exitsig = p->p_exitsig; 2056 ki->p_flag = p->p_flag; 2057 2058 ki->p_pid = p->p_pid; 2059 if (p->p_pptr) 2060 ki->p_ppid = p->p_pptr->p_pid; 2061 else 2062 ki->p_ppid = 0; 2063 ki->p_sid = p->p_session->s_sid; 2064 ki->p__pgid = p->p_pgrp->pg_id; 2065 2066 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2067 2068 ki->p_uid = p->p_ucred->cr_uid; 2069 ki->p_ruid = p->p_cred->p_ruid; 2070 ki->p_gid = p->p_ucred->cr_gid; 2071 ki->p_rgid = p->p_cred->p_rgid; 2072 ki->p_svuid = p->p_cred->p_svuid; 2073 ki->p_svgid = p->p_cred->p_svgid; 2074 2075 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 2076 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 2077 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 2078 2079 ki->p_jobc = p->p_pgrp->pg_jobc; 2080 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 2081 ki->p_tdev = tp->t_dev; 2082 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2083 ki->p_tsess = PTRTOINT64(tp->t_session); 2084 } else { 2085 ki->p_tdev = NODEV; 2086 } 2087 2088 ki->p_estcpu = p->p_estcpu; 2089 ki->p_rtime_sec = p->p_rtime.tv_sec; 2090 ki->p_rtime_usec = p->p_rtime.tv_usec; 2091 ki->p_cpticks = p->p_cpticks; 2092 ki->p_pctcpu = p->p_pctcpu; 2093 2094 ki->p_uticks = p->p_uticks; 2095 ki->p_sticks = p->p_sticks; 2096 ki->p_iticks = p->p_iticks; 2097 2098 ki->p_tracep = PTRTOINT64(p->p_tracep); 2099 ki->p_traceflag = p->p_traceflag; 2100 2101 2102 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 2103 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 2104 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2105 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2106 2107 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2108 ki->p_realstat = p->p_stat; 2109 ki->p_nice = p->p_nice; 2110 2111 ki->p_xstat = p->p_xstat; 2112 ki->p_acflag = p->p_acflag; 2113 2114 strncpy(ki->p_comm, p->p_comm, 2115 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2116 2117 strncpy(ki->p_login, p->p_session->s_login, 2118 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 2119 2120 ki->p_nlwps = p->p_nlwps; 2121 ki->p_nrlwps = p->p_nrlwps; 2122 ki->p_realflag = p->p_flag; 2123 2124 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2125 ki->p_vm_rssize = 0; 2126 ki->p_vm_tsize = 0; 2127 ki->p_vm_dsize = 0; 2128 ki->p_vm_ssize = 0; 2129 l = NULL; 2130 } else { 2131 struct vmspace *vm = p->p_vmspace; 2132 2133 ki->p_vm_rssize = vm_resident_count(vm); 2134 ki->p_vm_tsize = vm->vm_tsize; 2135 ki->p_vm_dsize = vm->vm_dsize; 2136 ki->p_vm_ssize = vm->vm_ssize; 2137 2138 /* Pick a "representative" LWP */ 2139 l = proc_representative_lwp(p); 2140 ki->p_forw = PTRTOINT64(l->l_forw); 2141 ki->p_back = PTRTOINT64(l->l_back); 2142 ki->p_addr = PTRTOINT64(l->l_addr); 2143 ki->p_stat = l->l_stat; 2144 ki->p_flag |= l->l_flag; 2145 ki->p_swtime = l->l_swtime; 2146 ki->p_slptime = l->l_slptime; 2147 if (l->l_stat == LSONPROC) { 2148 KDASSERT(l->l_cpu != NULL); 2149 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2150 } else 2151 ki->p_schedflags = 0; 2152 ki->p_holdcnt = l->l_holdcnt; 2153 ki->p_priority = l->l_priority; 2154 ki->p_usrpri = l->l_usrpri; 2155 if (l->l_wmesg) 2156 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 2157 ki->p_wchan = PTRTOINT64(l->l_wchan); 2158 2159 } 2160 2161 if (p->p_session->s_ttyvp) 2162 ki->p_eflag |= EPROC_CTTY; 2163 if (SESS_LEADER(p)) 2164 ki->p_eflag |= EPROC_SLEADER; 2165 2166 /* XXX Is this double check necessary? */ 2167 if (P_ZOMBIE(p)) { 2168 ki->p_uvalid = 0; 2169 } else { 2170 ki->p_uvalid = 1; 2171 2172 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 2173 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 2174 2175 calcru(p, &ut, &st, 0); 2176 ki->p_uutime_sec = ut.tv_sec; 2177 ki->p_uutime_usec = ut.tv_usec; 2178 ki->p_ustime_sec = st.tv_sec; 2179 ki->p_ustime_usec = st.tv_usec; 2180 2181 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 2182 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 2183 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 2184 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 2185 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 2186 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 2187 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 2188 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 2189 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 2190 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 2191 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 2192 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 2193 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 2194 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 2195 2196 timeradd(&p->p_stats->p_cru.ru_utime, 2197 &p->p_stats->p_cru.ru_stime, &ut); 2198 ki->p_uctime_sec = ut.tv_sec; 2199 ki->p_uctime_usec = ut.tv_usec; 2200 } 2201 #ifdef MULTIPROCESSOR 2202 if (l && l->l_cpu != NULL) 2203 ki->p_cpuid = l->l_cpu->ci_cpuid; 2204 else 2205 #endif 2206 ki->p_cpuid = KI_NOCPU; 2207 } 2208 2209 /* 2210 * Fill in a kinfo_lwp structure for the specified lwp. 2211 */ 2212 static void 2213 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 2214 { 2215 2216 kl->l_forw = PTRTOINT64(l->l_forw); 2217 kl->l_back = PTRTOINT64(l->l_back); 2218 kl->l_laddr = PTRTOINT64(l); 2219 kl->l_addr = PTRTOINT64(l->l_addr); 2220 kl->l_stat = l->l_stat; 2221 kl->l_lid = l->l_lid; 2222 kl->l_flag = l->l_flag; 2223 2224 kl->l_swtime = l->l_swtime; 2225 kl->l_slptime = l->l_slptime; 2226 if (l->l_stat == LSONPROC) { 2227 KDASSERT(l->l_cpu != NULL); 2228 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2229 } else 2230 kl->l_schedflags = 0; 2231 kl->l_holdcnt = l->l_holdcnt; 2232 kl->l_priority = l->l_priority; 2233 kl->l_usrpri = l->l_usrpri; 2234 if (l->l_wmesg) 2235 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 2236 kl->l_wchan = PTRTOINT64(l->l_wchan); 2237 #ifdef MULTIPROCESSOR 2238 if (l->l_cpu != NULL) 2239 kl->l_cpuid = l->l_cpu->ci_cpuid; 2240 else 2241 #endif 2242 kl->l_cpuid = KI_NOCPU; 2243 } 2244 2245 /* 2246 * Fill in an eproc structure for the specified process. 2247 */ 2248 void 2249 fill_eproc(struct proc *p, struct eproc *ep) 2250 { 2251 struct tty *tp; 2252 struct lwp *l; 2253 2254 ep->e_paddr = p; 2255 ep->e_sess = p->p_session; 2256 ep->e_pcred = *p->p_cred; 2257 ep->e_ucred = *p->p_ucred; 2258 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2259 ep->e_vm.vm_rssize = 0; 2260 ep->e_vm.vm_tsize = 0; 2261 ep->e_vm.vm_dsize = 0; 2262 ep->e_vm.vm_ssize = 0; 2263 /* ep->e_vm.vm_pmap = XXX; */ 2264 } else { 2265 struct vmspace *vm = p->p_vmspace; 2266 2267 ep->e_vm.vm_rssize = vm_resident_count(vm); 2268 ep->e_vm.vm_tsize = vm->vm_tsize; 2269 ep->e_vm.vm_dsize = vm->vm_dsize; 2270 ep->e_vm.vm_ssize = vm->vm_ssize; 2271 2272 /* Pick a "representative" LWP */ 2273 l = proc_representative_lwp(p); 2274 2275 if (l->l_wmesg) 2276 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 2277 } 2278 if (p->p_pptr) 2279 ep->e_ppid = p->p_pptr->p_pid; 2280 else 2281 ep->e_ppid = 0; 2282 ep->e_pgid = p->p_pgrp->pg_id; 2283 ep->e_sid = ep->e_sess->s_sid; 2284 ep->e_jobc = p->p_pgrp->pg_jobc; 2285 if ((p->p_flag & P_CONTROLT) && 2286 (tp = ep->e_sess->s_ttyp)) { 2287 ep->e_tdev = tp->t_dev; 2288 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2289 ep->e_tsess = tp->t_session; 2290 } else 2291 ep->e_tdev = NODEV; 2292 2293 ep->e_xsize = ep->e_xrssize = 0; 2294 ep->e_xccount = ep->e_xswrss = 0; 2295 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 2296 if (SESS_LEADER(p)) 2297 ep->e_flag |= EPROC_SLEADER; 2298 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 2299 } 2300
Indexes created Wed Oct 01 15:09:59 GMT 2025