init_sysctl.c revision 1.2
1 /* $NetBSD: init_sysctl.c,v 1.2 2003/12/06 02:52:29 atatat Exp $ */ 2 3 /*- 4 * Copyright (c) 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Brown. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include "opt_sysv.h" 40 #include "opt_multiprocessor.h" 41 #include "pty.h" 42 #include "rnd.h" 43 44 #include <sys/types.h> 45 #include <sys/param.h> 46 #include <sys/sysctl.h> 47 #include <sys/errno.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/unistd.h> 51 #include <sys/disklabel.h> 52 #include <sys/rnd.h> 53 #include <sys/vnode.h> 54 #include <sys/mount.h> 55 #include <sys/namei.h> 56 #include <sys/msgbuf.h> 57 #include <dev/cons.h> 58 #include <sys/socketvar.h> 59 #include <sys/file.h> 60 #include <sys/tty.h> 61 #include <sys/malloc.h> 62 #include <sys/resource.h> 63 #include <sys/resourcevar.h> 64 #include <sys/exec.h> 65 #include <sys/conf.h> 66 #include <sys/device.h> 67 68 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 69 #include <sys/ipc.h> 70 #endif 71 #ifdef SYSVMSG 72 #include <sys/msg.h> 73 #endif 74 #ifdef SYSVSEM 75 #include <sys/sem.h> 76 #endif 77 #ifdef SYSVSHM 78 #include <sys/shm.h> 79 #endif 80 81 /* 82 * try over estimating by 5 procs/lwps 83 */ 84 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 85 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 86 87 /* 88 * convert pointer to 64 int for struct kinfo_proc2 89 */ 90 #define PTRTOINT64(foo) ((u_int64_t)(uintptr_t)(foo)) 91 92 #ifndef MULTIPROCESSOR 93 #define sysctl_ncpus() (1) 94 #else /* MULTIPROCESSOR */ 95 #ifndef CPU_INFO_FOREACH 96 #define CPU_INFO_ITERATOR int 97 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL 98 #endif 99 static int 100 sysctl_ncpus(void) 101 { 102 struct cpu_info *ci; 103 CPU_INFO_ITERATOR cii; 104 105 int ncpus = 0; 106 for (CPU_INFO_FOREACH(cii, ci)) 107 ncpus++; 108 return (ncpus); 109 } 110 #endif /* MULTIPROCESSOR */ 111 112 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 113 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 114 static int sysctl_kern_securelevel(SYSCTLFN_PROTO); 115 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 116 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 117 static int sysctl_kern_file(SYSCTLFN_PROTO); 118 static int sysctl_kern_autonice(SYSCTLFN_PROTO); 119 static int sysctl_msgbuf(SYSCTLFN_PROTO); 120 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 121 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 122 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 123 static int sysctl_kern_sysvipc(SYSCTLFN_PROTO); 124 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 125 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 126 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 127 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 128 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 129 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 130 static int sysctl_kern_somaxkva(SYSCTLFN_PROTO); 131 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 132 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 133 static int sysctl_doeproc(SYSCTLFN_PROTO); 134 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 135 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 136 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 137 138 static void fill_kproc2(struct proc *, struct kinfo_proc2 *); 139 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 140 141 /* 142 * ******************************************************************** 143 * section 1: setup routines 144 * ******************************************************************** 145 * these functions are stuffed into a link set for sysctl setup 146 * functions. they're never called or referenced from anywhere else. 147 * ******************************************************************** 148 */ 149 150 /* 151 * sets up the base nodes... 152 */ 153 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 154 { 155 156 sysctl_createv(SYSCTL_PERMANENT, 157 CTLTYPE_NODE, "kern", NULL, 158 NULL, 0, NULL, 0, 159 CTL_KERN, CTL_EOL); 160 sysctl_createv(SYSCTL_PERMANENT, 161 CTLTYPE_NODE, "vm", NULL, 162 NULL, 0, NULL, 0, 163 CTL_VM, CTL_EOL); 164 sysctl_createv(SYSCTL_PERMANENT, 165 CTLTYPE_NODE, "vfs", NULL, 166 NULL, 0, NULL, 0, 167 CTL_VFS, CTL_EOL); 168 sysctl_createv(SYSCTL_PERMANENT, 169 CTLTYPE_NODE, "net", NULL, 170 NULL, 0, NULL, 0, 171 CTL_NET, CTL_EOL); 172 sysctl_createv(SYSCTL_PERMANENT, 173 CTLTYPE_NODE, "debug", NULL, 174 NULL, 0, NULL, 0, 175 CTL_DEBUG, CTL_EOL); 176 sysctl_createv(SYSCTL_PERMANENT, 177 CTLTYPE_NODE, "hw", NULL, 178 NULL, 0, NULL, 0, 179 CTL_HW, CTL_EOL); 180 sysctl_createv(SYSCTL_PERMANENT, 181 CTLTYPE_NODE, "machdep", NULL, 182 NULL, 0, NULL, 0, 183 CTL_MACHDEP, CTL_EOL); 184 /* 185 * this node is inserted so that the sysctl nodes in libc can 186 * operate. 187 */ 188 sysctl_createv(SYSCTL_PERMANENT, 189 CTLTYPE_NODE, "user", NULL, 190 NULL, 0, NULL, 0, 191 CTL_USER, CTL_EOL); 192 sysctl_createv(SYSCTL_PERMANENT, 193 CTLTYPE_NODE, "ddb", NULL, 194 NULL, 0, NULL, 0, 195 CTL_DDB, CTL_EOL); 196 sysctl_createv(SYSCTL_PERMANENT, 197 CTLTYPE_NODE, "proc", NULL, 198 NULL, 0, NULL, 0, 199 CTL_PROC, CTL_EOL); 200 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 201 CTLTYPE_NODE, "vendor", NULL, 202 NULL, 0, NULL, 0, 203 CTL_VENDOR, CTL_EOL); 204 sysctl_createv(SYSCTL_PERMANENT, 205 CTLTYPE_NODE, "emul", NULL, 206 NULL, 0, NULL, 0, 207 CTL_EMUL, CTL_EOL); 208 } 209 210 /* 211 * this setup routine is a replacement for kern_sysctl() 212 */ 213 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 214 { 215 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 216 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 217 extern int dumponpanic; /* defined in kern/subr_prf.c */ 218 219 sysctl_createv(SYSCTL_PERMANENT, 220 CTLTYPE_NODE, "kern", NULL, 221 NULL, 0, NULL, 0, 222 CTL_KERN, CTL_EOL); 223 224 sysctl_createv(SYSCTL_PERMANENT, 225 CTLTYPE_STRING, "ostype", NULL, 226 NULL, 0, &ostype, 0, 227 CTL_KERN, KERN_OSTYPE, CTL_EOL); 228 sysctl_createv(SYSCTL_PERMANENT, 229 CTLTYPE_STRING, "osrelease", NULL, 230 NULL, 0, &osrelease, 0, 231 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 232 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 233 CTLTYPE_INT, "osrevision", NULL, 234 NULL, __NetBSD_Version__, NULL, 0, 235 CTL_KERN, KERN_OSREV, CTL_EOL); 236 sysctl_createv(SYSCTL_PERMANENT, 237 CTLTYPE_STRING, "version", NULL, 238 NULL, 0, &version, 0, 239 CTL_KERN, KERN_VERSION, CTL_EOL); 240 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 241 CTLTYPE_INT, "maxvnodes", NULL, 242 sysctl_kern_maxvnodes, 0, NULL, 0, 243 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 244 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 245 CTLTYPE_INT, "maxproc", NULL, 246 sysctl_kern_maxproc, 0, NULL, 0, 247 CTL_KERN, KERN_MAXPROC, CTL_EOL); 248 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 249 CTLTYPE_INT, "maxfiles", NULL, 250 NULL, 0, &maxfiles, 0, 251 CTL_KERN, KERN_MAXFILES, CTL_EOL); 252 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 253 CTLTYPE_INT, "argmax", NULL, 254 NULL, ARG_MAX, NULL, 0, 255 CTL_KERN, KERN_ARGMAX, CTL_EOL); 256 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 257 CTLTYPE_INT, "securelevel", NULL, 258 sysctl_kern_securelevel, 0, &securelevel, 0, 259 CTL_KERN, KERN_SECURELVL, CTL_EOL); 260 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 261 CTLTYPE_STRING, "hostname", NULL, 262 NULL, 0, &hostname, MAXHOSTNAMELEN, 263 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 264 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 265 CTLTYPE_INT, "hostid", NULL, 266 sysctl_kern_hostid, 0, NULL, 0, 267 CTL_KERN, KERN_HOSTID, CTL_EOL); 268 sysctl_createv(SYSCTL_PERMANENT, 269 CTLTYPE_STRUCT, "clockrate", NULL, 270 sysctl_kern_clockrate, 0, NULL, 271 sizeof(struct clockinfo), 272 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 273 sysctl_createv(SYSCTL_PERMANENT, 274 CTLTYPE_STRUCT, "vnode", NULL, 275 sysctl_kern_vnode, 0, NULL, 0, 276 CTL_KERN, KERN_VNODE, CTL_EOL); 277 sysctl_createv(SYSCTL_PERMANENT, 278 CTLTYPE_STRUCT, "file", NULL, 279 sysctl_kern_file, 0, NULL, 0, 280 CTL_KERN, KERN_FILE, CTL_EOL); 281 #ifndef GPROF 282 sysctl_createv(SYSCTL_PERMANENT, 283 CTLTYPE_NODE, "profiling", NULL, 284 sysctl_notavail, 0, NULL, 0, 285 CTL_KERN, KERN_PROF, CTL_EOL); 286 #endif 287 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 288 CTLTYPE_INT, "posix1version", NULL, 289 NULL, _POSIX_VERSION, NULL, 0, 290 CTL_KERN, KERN_POSIX1, CTL_EOL); 291 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 292 CTLTYPE_INT, "ngroups", NULL, 293 NULL, NGROUPS_MAX, NULL, 0, 294 CTL_KERN, KERN_NGROUPS, CTL_EOL); 295 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 296 CTLTYPE_INT, "job_control", NULL, 297 NULL, 1, NULL, 0, 298 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 299 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 300 CTLTYPE_INT, "saved_ids", NULL, NULL, 301 #ifdef _POSIX_SAVED_IDS 302 1, 303 #else /* _POSIX_SAVED_IDS */ 304 0, 305 #endif /* _POSIX_SAVED_IDS */ 306 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 307 sysctl_createv(SYSCTL_PERMANENT, 308 CTLTYPE_STRUCT, "boottime", NULL, 309 NULL, 0, &boottime, sizeof(boottime), 310 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 311 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 312 CTLTYPE_STRING, "domainname", NULL, 313 NULL, 0, &domainname, MAXHOSTNAMELEN, 314 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 315 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 316 CTLTYPE_INT, "maxpartitions", NULL, 317 NULL, MAXPARTITIONS, NULL, 0, 318 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 319 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 320 CTLTYPE_INT, "rawpartition", NULL, 321 NULL, RAW_PART, NULL, 0, 322 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 323 sysctl_createv(SYSCTL_PERMANENT, 324 CTLTYPE_STRUCT, "timex", NULL, 325 sysctl_notavail, 0, NULL, 0, 326 CTL_KERN, KERN_TIMEX, CTL_EOL); 327 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 328 CTLTYPE_INT, "autonicetime", NULL, 329 sysctl_kern_autonice, 0, &autonicetime, 0, 330 CTL_KERN, KERN_AUTONICETIME, CTL_EOL); 331 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 332 CTLTYPE_INT, "autoniceval", NULL, 333 sysctl_kern_autonice, 0, &autoniceval, 0, 334 CTL_KERN, KERN_AUTONICEVAL, CTL_EOL); 335 sysctl_createv(SYSCTL_PERMANENT, 336 CTLTYPE_INT, "rtc_offset", NULL, 337 NULL, 0, &rtc_offset, 0, 338 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 339 sysctl_createv(SYSCTL_PERMANENT, 340 CTLTYPE_STRING, "root_device", NULL, 341 sysctl_root_device, 0, NULL, 0, 342 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 343 sysctl_createv(SYSCTL_PERMANENT, 344 CTLTYPE_INT, "msgbufsize", NULL, 345 sysctl_msgbuf, 0, &msgbufp->msg_bufs, 0, 346 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 347 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 348 CTLTYPE_INT, "fsync", NULL, 349 NULL, 1, NULL, 0, 350 CTL_KERN, KERN_FSYNC, CTL_EOL); 351 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 352 CTLTYPE_INT, "sysvmsg", NULL, NULL, 353 #ifdef SYSVMSG 354 1, 355 #else /* SYSVMSG */ 356 0, 357 #endif /* SYSVMSG */ 358 NULL, 0, CTL_KERN, KERN_SYSVMSG, CTL_EOL); 359 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 360 CTLTYPE_INT, "sysvsem", NULL, NULL, 361 #ifdef SYSVSEM 362 1, 363 #else /* SYSVSEM */ 364 0, 365 #endif /* SYSVSEM */ 366 NULL, 0, CTL_KERN, KERN_SYSVSEM, CTL_EOL); 367 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 368 CTLTYPE_INT, "sysvshm", NULL, NULL, 369 #ifdef SYSVSHM 370 1, 371 #else /* SYSVSHM */ 372 0, 373 #endif /* SYSVSHM */ 374 NULL, 0, CTL_KERN, KERN_SYSVSHM, CTL_EOL); 375 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 376 CTLTYPE_INT, "synchronized_io", NULL, 377 NULL, 1, NULL, 0, 378 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 379 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 380 CTLTYPE_INT, "iov_max", NULL, 381 NULL, IOV_MAX, NULL, 0, 382 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 383 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 384 CTLTYPE_INT, "mapped_files", NULL, 385 NULL, 1, NULL, 0, 386 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 387 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 388 CTLTYPE_INT, "memlock", NULL, 389 NULL, 1, NULL, 0, 390 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 391 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 392 CTLTYPE_INT, "memlock_range", NULL, 393 NULL, 1, NULL, 0, 394 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 395 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 396 CTLTYPE_INT, "memory_protection", NULL, 397 NULL, 1, NULL, 0, 398 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 399 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 400 CTLTYPE_INT, "login_name_max", NULL, 401 NULL, LOGIN_NAME_MAX, NULL, 0, 402 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 403 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 404 CTLTYPE_STRING, "defcorename", NULL, 405 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 406 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 407 sysctl_createv(SYSCTL_PERMANENT, 408 CTLTYPE_INT, "logsigexit", NULL, 409 NULL, 0, &kern_logsigexit, 0, 410 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 411 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 412 CTLTYPE_INT, "fscale", NULL, 413 NULL, FSCALE, NULL, 0, 414 CTL_KERN, KERN_FSCALE, CTL_EOL); 415 sysctl_createv(SYSCTL_PERMANENT, 416 CTLTYPE_INT, "ccpu", NULL, 417 NULL, 0, &ccpu, 0, 418 CTL_KERN, KERN_CCPU, CTL_EOL); 419 sysctl_createv(SYSCTL_PERMANENT, 420 CTLTYPE_STRUCT, "cp_time", NULL, 421 sysctl_kern_cptime, 0, NULL, 0, 422 CTL_KERN, KERN_CP_TIME, CTL_EOL); 423 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 424 sysctl_createv(SYSCTL_PERMANENT, 425 CTLTYPE_STRUCT, "sysvipc_info", NULL, 426 sysctl_kern_sysvipc, 0, NULL, 0, 427 CTL_KERN, KERN_SYSVIPC_INFO, CTL_EOL); 428 #endif /* SYSVMSG || SYSVSEM || SYSVSHM */ 429 sysctl_createv(SYSCTL_PERMANENT, 430 CTLTYPE_INT, "msgbuf", NULL, 431 sysctl_msgbuf, 0, NULL, 0, 432 CTL_KERN, KERN_MSGBUF, CTL_EOL); 433 sysctl_createv(SYSCTL_PERMANENT, 434 CTLTYPE_STRUCT, "consdev", NULL, 435 sysctl_consdev, 0, NULL, sizeof(dev_t), 436 CTL_KERN, KERN_CONSDEV, CTL_EOL); 437 #if NPTY > 0 438 sysctl_createv(SYSCTL_PERMANENT, 439 CTLTYPE_INT, "maxptys", NULL, 440 sysctl_kern_maxptys, 0, NULL, 0, 441 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 442 #endif /* NPTY > 0 */ 443 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 444 CTLTYPE_INT, "maxphys", NULL, 445 NULL, MAXPHYS, NULL, 0, 446 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 447 sysctl_createv(SYSCTL_PERMANENT, 448 CTLTYPE_INT, "sbmax", NULL, 449 sysctl_kern_sbmax, 0, NULL, 0, 450 CTL_KERN, KERN_SBMAX, CTL_EOL); 451 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 452 CTLTYPE_INT, "monotonic_clock", NULL, 453 /* XXX _POSIX_VERSION */ 454 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 455 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 456 sysctl_createv(SYSCTL_PERMANENT, 457 CTLTYPE_INT, "urandom", NULL, 458 sysctl_kern_urnd, 0, NULL, 0, 459 CTL_KERN, KERN_URND, CTL_EOL); 460 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 461 CTLTYPE_INT, "labelsector", NULL, 462 NULL, LABELSECTOR, NULL, 0, 463 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 464 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 465 CTLTYPE_INT, "labeloffset", NULL, 466 NULL, LABELOFFSET, NULL, 0, 467 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 468 sysctl_createv(SYSCTL_PERMANENT, 469 CTLTYPE_NODE, "lwp", NULL, 470 sysctl_kern_lwp, 0, NULL, 0, 471 CTL_KERN, KERN_LWP, CTL_EOL); 472 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 473 CTLTYPE_INT, "forkfsleep", NULL, 474 sysctl_kern_forkfsleep, 0, NULL, 0, 475 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 476 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 477 CTLTYPE_INT, "posix_threads", NULL, 478 /* XXX _POSIX_VERSION */ 479 NULL, _POSIX_THREADS, NULL, 0, 480 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 481 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 482 CTLTYPE_INT, "posix_semaphores", NULL, NULL, 483 #ifdef P1003_1B_SEMAPHORE 484 200112, 485 #else /* P1003_1B_SEMAPHORE */ 486 0, 487 #endif /* P1003_1B_SEMAPHORE */ 488 NULL, 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 489 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 490 CTLTYPE_INT, "posix_barriers", NULL, 491 /* XXX _POSIX_VERSION */ 492 NULL, _POSIX_BARRIERS, NULL, 0, 493 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 494 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 495 CTLTYPE_INT, "posix_timers", NULL, 496 /* XXX _POSIX_VERSION */ 497 NULL, _POSIX_TIMERS, NULL, 0, 498 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 499 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 500 CTLTYPE_INT, "posix_spin_locks", NULL, 501 /* XXX _POSIX_VERSION */ 502 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 503 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 504 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 505 CTLTYPE_INT, "posix_reader_writer_locks", NULL, 506 /* XXX _POSIX_VERSION */ 507 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 508 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 509 sysctl_createv(SYSCTL_PERMANENT, 510 CTLTYPE_INT, "dump_on_panic", NULL, 511 NULL, 0, &dumponpanic, 0, 512 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 513 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, 514 CTLTYPE_INT, "somaxkva", NULL, 515 sysctl_kern_somaxkva, 0, NULL, 0, 516 CTL_KERN, KERN_SOMAXKVA, CTL_EOL); 517 sysctl_createv(SYSCTL_PERMANENT, 518 CTLTYPE_INT, "root_partition", NULL, 519 sysctl_kern_root_partition, 0, NULL, 0, 520 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 521 sysctl_createv(SYSCTL_PERMANENT, 522 CTLTYPE_STRUCT, "drivers", NULL, 523 sysctl_kern_drivers, 0, NULL, 0, 524 CTL_KERN, KERN_DRIVERS, CTL_EOL); 525 } 526 527 SYSCTL_SETUP(sysctl_kern_proc_setup, 528 "sysctl kern.proc/proc2/proc_args subtree setup") 529 { 530 531 sysctl_createv(SYSCTL_PERMANENT, 532 CTLTYPE_NODE, "kern", NULL, 533 NULL, 0, NULL, 0, 534 CTL_KERN, CTL_EOL); 535 536 sysctl_createv(SYSCTL_PERMANENT, 537 CTLTYPE_NODE, "proc", NULL, 538 sysctl_doeproc, 0, NULL, 0, 539 CTL_KERN, KERN_PROC, CTL_EOL); 540 sysctl_createv(SYSCTL_PERMANENT, 541 CTLTYPE_NODE, "proc2", NULL, 542 sysctl_doeproc, 0, NULL, 0, 543 CTL_KERN, KERN_PROC2, CTL_EOL); 544 sysctl_createv(SYSCTL_PERMANENT, 545 CTLTYPE_NODE, "proc_args", NULL, 546 sysctl_kern_proc_args, 0, NULL, 0, 547 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 548 549 /* 550 "nodes" under these: 551 552 KERN_PROC_ALL 553 KERN_PROC_PID pid 554 KERN_PROC_PGRP pgrp 555 KERN_PROC_SESSION sess 556 KERN_PROC_TTY tty 557 KERN_PROC_UID uid 558 KERN_PROC_RUID uid 559 KERN_PROC_GID gid 560 KERN_PROC_RGID gid 561 562 all in all, probably not worth the effort... 563 */ 564 } 565 566 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 567 { 568 u_int u; 569 u_quad_t q; 570 571 sysctl_createv(SYSCTL_PERMANENT, 572 CTLTYPE_NODE, "hw", NULL, 573 NULL, 0, NULL, 0, 574 CTL_HW, CTL_EOL); 575 576 sysctl_createv(SYSCTL_PERMANENT, 577 CTLTYPE_STRING, "machine", NULL, 578 NULL, 0, machine, 0, 579 CTL_HW, HW_MACHINE, CTL_EOL); 580 sysctl_createv(SYSCTL_PERMANENT, 581 CTLTYPE_STRING, "model", NULL, 582 NULL, 0, cpu_model, 0, 583 CTL_HW, HW_MODEL, CTL_EOL); 584 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 585 CTLTYPE_INT, "ncpu", NULL, 586 NULL, sysctl_ncpus(), NULL, 0, 587 CTL_HW, HW_NCPU, CTL_EOL); 588 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 589 CTLTYPE_INT, "byteorder", NULL, 590 NULL, BYTE_ORDER, NULL, 0, 591 CTL_HW, HW_BYTEORDER, CTL_EOL); 592 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 593 UINT_MAX : physmem * PAGE_SIZE; 594 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 595 CTLTYPE_INT, "physmem", NULL, 596 NULL, u, NULL, 0, 597 CTL_HW, HW_PHYSMEM, CTL_EOL); 598 sysctl_createv(SYSCTL_PERMANENT, 599 CTLTYPE_INT, "usermem", NULL, 600 sysctl_hw_usermem, 0, NULL, 0, 601 CTL_HW, HW_USERMEM, CTL_EOL); 602 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 603 CTLTYPE_INT, "pagesize", NULL, 604 NULL, PAGE_SIZE, NULL, 0, 605 CTL_HW, HW_PAGESIZE, CTL_EOL); 606 sysctl_createv(SYSCTL_PERMANENT, 607 CTLTYPE_STRING, "disknames", NULL, 608 sysctl_hw_disknames, 0, NULL, 0, 609 CTL_HW, HW_DISKNAMES, CTL_EOL); 610 sysctl_createv(SYSCTL_PERMANENT, 611 CTLTYPE_STRUCT, "diskstats", NULL, 612 sysctl_hw_diskstats, 0, NULL, 0, 613 CTL_HW, HW_DISKSTATS, CTL_EOL); 614 sysctl_createv(SYSCTL_PERMANENT, 615 CTLTYPE_STRING, "machine_arch", NULL, 616 NULL, 0, machine_arch, 0, 617 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 618 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 619 CTLTYPE_INT, "alignbytes", NULL, 620 NULL, ALIGNBYTES, NULL, 0, 621 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 622 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE|SYSCTL_HEX, 623 CTLTYPE_STRING, "cnmagic", NULL, 624 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 625 CTL_HW, HW_CNMAGIC, CTL_EOL); 626 q = (u_quad_t)physmem * PAGE_SIZE; 627 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_IMMEDIATE, 628 CTLTYPE_QUAD, "physmem64", NULL, 629 NULL, q, NULL, 0, 630 CTL_HW, HW_PHYSMEM64, CTL_EOL); 631 sysctl_createv(SYSCTL_PERMANENT, 632 CTLTYPE_QUAD, "usermem64", NULL, 633 sysctl_hw_usermem, 0, NULL, 0, 634 CTL_HW, HW_USERMEM64, CTL_EOL); 635 } 636 637 #ifdef DEBUG 638 /* 639 * Debugging related system variables. 640 */ 641 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 642 struct ctldebug debug5, debug6, debug7, debug8, debug9; 643 struct ctldebug debug10, debug11, debug12, debug13, debug14; 644 struct ctldebug debug15, debug16, debug17, debug18, debug19; 645 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 646 &debug0, &debug1, &debug2, &debug3, &debug4, 647 &debug5, &debug6, &debug7, &debug8, &debug9, 648 &debug10, &debug11, &debug12, &debug13, &debug14, 649 &debug15, &debug16, &debug17, &debug18, &debug19, 650 }; 651 652 /* 653 * this setup routine is a replacement for debug_sysctl() 654 * 655 * note that it creates several nodes per defined debug variable 656 */ 657 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 658 { 659 struct ctldebug *cdp; 660 char nodename[20]; 661 int i; 662 663 /* 664 * two ways here: 665 * 666 * the "old" way (debug.name -> value) which was emulated by 667 * the sysctl(8) binary 668 * 669 * the new way, which the sysctl(8) binary was actually using 670 671 node debug 672 node debug.0 673 string debug.0.name 674 int debug.0.value 675 int debug.name 676 677 */ 678 679 sysctl_createv(SYSCTL_PERMANENT, 680 CTLTYPE_NODE, "debug", NULL, 681 NULL, 0, NULL, 0, 682 CTL_DEBUG, CTL_EOL); 683 684 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 685 cdp = debugvars[i]; 686 if (cdp->debugname == NULL || cdp->debugvar == NULL) 687 continue; 688 689 snprintf(nodename, sizeof(nodename), "debug%d", i); 690 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 691 CTLTYPE_NODE, nodename, NULL, 692 NULL, 0, NULL, 0, 693 CTL_DEBUG, i, CTL_EOL); 694 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 695 CTLTYPE_STRING, "name", NULL, 696 NULL, 0, cdp->debugname, 0, 697 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 698 sysctl_createv(SYSCTL_PERMANENT|SYSCTL_HIDDEN, 699 CTLTYPE_INT, "value", NULL, 700 NULL, 0, cdp->debugvar, 0, 701 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 702 sysctl_createv(SYSCTL_PERMANENT, 703 CTLTYPE_INT, cdp->debugname, NULL, 704 NULL, 0, cdp->debugvar, 0, 705 CTL_DEBUG, CTL_CREATE, CTL_EOL); 706 } 707 } 708 #endif /* DEBUG */ 709 710 /* 711 * ******************************************************************** 712 * section 2: private node-specific helper routines. 713 * ******************************************************************** 714 */ 715 716 /* 717 * sysctl helper routine for kern.maxvnodes. handles ensuring that 718 * new values never falls below desiredvnodes and then calls reinit 719 * routines that needs to adjust to the new value. 720 */ 721 static int 722 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 723 { 724 int error, new_vnodes; 725 struct sysctlnode node; 726 727 new_vnodes = desiredvnodes; 728 node = *rnode; 729 node.sysctl_data = &new_vnodes; 730 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 731 if (error || newp == NULL) 732 return (error); 733 734 if (new_vnodes < desiredvnodes) 735 return (EINVAL); 736 desiredvnodes = new_vnodes; 737 vfs_reinit(); 738 nchreinit(); 739 740 return (0); 741 } 742 743 /* 744 * sysctl helper routine for kern.maxvnodes. ensures that the new 745 * values are not too low or too high. 746 */ 747 static int 748 sysctl_kern_maxproc(SYSCTLFN_ARGS) 749 { 750 int error, nmaxproc; 751 struct sysctlnode node; 752 753 nmaxproc = maxproc; 754 node = *rnode; 755 node.sysctl_data = &nmaxproc; 756 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 757 if (error || newp == NULL) 758 return (error); 759 760 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 761 return (EINVAL); 762 #ifdef __HAVE_CPU_MAXPROC 763 if (nmaxproc > cpu_maxproc()) 764 return (EINVAL); 765 #endif 766 maxproc = nmaxproc; 767 768 return (0); 769 } 770 771 /* 772 * sysctl helper routine for kern.securelevel. ensures that the value 773 * only rises unless the caller has pid 1 (assumed to be init). 774 */ 775 static int 776 sysctl_kern_securelevel(SYSCTLFN_ARGS) 777 { 778 int newsecurelevel, error; 779 struct sysctlnode node; 780 781 newsecurelevel = securelevel; 782 node = *rnode; 783 node.sysctl_data = &newsecurelevel; 784 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 785 if (error || newp == NULL) 786 return (error); 787 788 if (newsecurelevel < securelevel && l->l_proc->p_pid != 1) 789 return (EPERM); 790 securelevel = newsecurelevel; 791 792 return (error); 793 } 794 795 /* 796 * sysctl helper function for kern.hostid. the hostid is a long, but 797 * we export it as an int, so we need to give it a little help. 798 */ 799 static int 800 sysctl_kern_hostid(SYSCTLFN_ARGS) 801 { 802 int error, inthostid; 803 struct sysctlnode node; 804 805 inthostid = hostid; /* XXX assumes sizeof int >= sizeof long */ 806 node = *rnode; 807 node.sysctl_data = &inthostid; 808 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 809 if (error || newp == NULL) 810 return (error); 811 812 hostid = inthostid; 813 814 return (0); 815 } 816 817 /* 818 * sysctl helper routine for kern.clockrate. assembles a struct on 819 * the fly to be returned to the caller. 820 */ 821 static int 822 sysctl_kern_clockrate(SYSCTLFN_ARGS) 823 { 824 struct clockinfo clkinfo; 825 struct sysctlnode node; 826 827 clkinfo.tick = tick; 828 clkinfo.tickadj = tickadj; 829 clkinfo.hz = hz; 830 clkinfo.profhz = profhz; 831 clkinfo.stathz = stathz ? stathz : hz; 832 833 node = *rnode; 834 node.sysctl_data = &clkinfo; 835 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 836 } 837 838 839 /* 840 * sysctl helper routine for kern.file pseudo-subtree. 841 */ 842 static int 843 sysctl_kern_file(SYSCTLFN_ARGS) 844 { 845 int error; 846 size_t buflen; 847 struct file *fp; 848 char *start, *where; 849 850 start = where = oldp; 851 buflen = *oldlenp; 852 if (where == NULL) { 853 /* 854 * overestimate by 10 files 855 */ 856 *oldlenp = sizeof(filehead) + (nfiles + 10) * sizeof(struct file); 857 return (0); 858 } 859 860 /* 861 * first copyout filehead 862 */ 863 if (buflen < sizeof(filehead)) { 864 *oldlenp = 0; 865 return (0); 866 } 867 error = copyout(&filehead, where, sizeof(filehead)); 868 if (error) 869 return (error); 870 buflen -= sizeof(filehead); 871 where += sizeof(filehead); 872 873 /* 874 * followed by an array of file structures 875 */ 876 LIST_FOREACH(fp, &filehead, f_list) { 877 if (buflen < sizeof(struct file)) { 878 *oldlenp = where - start; 879 return (ENOMEM); 880 } 881 error = copyout(fp, where, sizeof(struct file)); 882 if (error) 883 return (error); 884 buflen -= sizeof(struct file); 885 where += sizeof(struct file); 886 } 887 *oldlenp = where - start; 888 return (0); 889 } 890 891 /* 892 * sysctl helper routine for kern.autonicetime and kern.autoniceval. 893 * asserts that the assigned value is in the correct range. 894 */ 895 static int 896 sysctl_kern_autonice(SYSCTLFN_ARGS) 897 { 898 int error, t = 0; 899 struct sysctlnode node; 900 901 node = *rnode; 902 t = *(int*)node.sysctl_data; 903 node.sysctl_data = &t; 904 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 905 if (error || newp == NULL) 906 return (error); 907 908 switch (node.sysctl_num) { 909 case KERN_AUTONICETIME: 910 if (t >= 0) 911 autonicetime = t; 912 break; 913 case KERN_AUTONICEVAL: 914 if (t < PRIO_MIN) 915 t = PRIO_MIN; 916 else if (t > PRIO_MAX) 917 t = PRIO_MAX; 918 autoniceval = t; 919 break; 920 } 921 922 return (0); 923 } 924 925 /* 926 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. for the 927 * former it merely checks the the message buffer is set up. for the 928 * latter, it also copies out the data if necessary. 929 */ 930 static int 931 sysctl_msgbuf(SYSCTLFN_ARGS) 932 { 933 char *where = oldp; 934 size_t len, maxlen; 935 long beg, end; 936 int error; 937 938 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 939 msgbufenabled = 0; 940 return (ENXIO); 941 } 942 943 switch (rnode->sysctl_num) { 944 case KERN_MSGBUFSIZE: 945 return (sysctl_lookup(SYSCTLFN_CALL(rnode))); 946 case KERN_MSGBUF: 947 break; 948 default: 949 return (EOPNOTSUPP); 950 } 951 952 if (newp != NULL) 953 return (EPERM); 954 955 if (oldp == NULL) { 956 /* always return full buffer size */ 957 *oldlenp = msgbufp->msg_bufs; 958 return (0); 959 } 960 961 error = 0; 962 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 963 964 /* 965 * First, copy from the write pointer to the end of 966 * message buffer. 967 */ 968 beg = msgbufp->msg_bufx; 969 end = msgbufp->msg_bufs; 970 while (maxlen > 0) { 971 len = MIN(end - beg, maxlen); 972 if (len == 0) 973 break; 974 error = copyout(&msgbufp->msg_bufc[beg], where, len); 975 if (error) 976 break; 977 where += len; 978 maxlen -= len; 979 980 /* 981 * ... then, copy from the beginning of message buffer to 982 * the write pointer. 983 */ 984 beg = 0; 985 end = msgbufp->msg_bufx; 986 } 987 988 return (error); 989 } 990 991 /* 992 * sysctl helper routine for kern.defcorename. in the case of a new 993 * string being assigned, check that it's not a zero-length string. 994 * (XXX the check in -current doesn't work, but do we really care?) 995 */ 996 static int 997 sysctl_kern_defcorename(SYSCTLFN_ARGS) 998 { 999 int error; 1000 char newcorename[MAXPATHLEN]; 1001 struct sysctlnode node; 1002 1003 node = *rnode; 1004 node.sysctl_data = &newcorename[0]; 1005 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1006 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1007 if (error || newp == NULL) 1008 return (error); 1009 1010 /* 1011 * when sysctl_lookup() deals with a string, it's guaranteed 1012 * to come back nul terminated. so there. :) 1013 */ 1014 if (strlen(newcorename) == 0) 1015 return (EINVAL); 1016 1017 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1018 1019 return (0); 1020 } 1021 1022 /* 1023 * sysctl helper routine for kern.cp_time node. adds up cpu time 1024 * across all cpus. 1025 */ 1026 static int 1027 sysctl_kern_cptime(SYSCTLFN_ARGS) 1028 { 1029 struct sysctlnode node = *rnode; 1030 u_int64_t *cp_time = NULL; 1031 int error; 1032 1033 #ifdef MULTIPROCESSOR 1034 int n = sysctl_ncpus(), i; 1035 struct cpu_info *ci; 1036 CPU_INFO_ITERATOR cii; 1037 1038 /* 1039 * if you specifically pass a buffer that is the size of the 1040 * sum, or if you are probing for the size, you get the "sum" 1041 * of cp_time (and the size thereof) across all processors. 1042 * 1043 * alternately, you can pass an additional mib number and get 1044 * cp_time for that particular processor. 1045 */ 1046 switch (namelen) { 1047 case 0: 1048 if (*oldlenp == sizeof(*cp_time) * CPUSTATES || oldp == NULL) { 1049 node.sysctl_size = sizeof(cp_time) * CPUSTATES; 1050 cp_time = malloc(node.sysctl_size, 1051 M_TEMP, M_WAITOK|M_CANFAIL); 1052 n = -1; /* SUM */ 1053 } 1054 else { 1055 node.sysctl_size = n * sizeof(cp_time) * CPUSTATES; 1056 cp_time = malloc(node.sysctl_size, 1057 M_TEMP, M_WAITOK|M_CANFAIL); 1058 n = -2; /* ALL */ 1059 } 1060 break; 1061 case 1: 1062 if (name[0] < 0 || name[0] >= n) 1063 return (EINVAL); /* ENOSUCHPROCESSOR */ 1064 node.sysctl_size = sizeof(cp_time) * CPUSTATES; 1065 cp_time = malloc(node.sysctl_size, 1066 M_TEMP, M_WAITOK|M_CANFAIL); 1067 n = name[0]; 1068 /* 1069 * adjust these so that sysctl_lookup() will be happy 1070 */ 1071 name++; 1072 namelen--; 1073 default: 1074 return (EINVAL); 1075 } 1076 1077 if (cp_time == NULL) 1078 return (ENOMEM); 1079 node.sysctl_data = cp_time; 1080 memset(cp_time, 0, node.sysctl_size); 1081 1082 for (CPU_INFO_FOREACH(cii, ci)) { 1083 /* 1084 * doing a sum or doing just this processor 1085 */ 1086 if (n == -1 || n == 0) 1087 for (i = 0; i < CPUSTATES; i++) 1088 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1089 /* 1090 * if a specific processor was requested and we just 1091 * did it, we're done here 1092 */ 1093 if (n == 0) 1094 break; 1095 /* 1096 * if doing "all", skip to next cp_time set for next processor 1097 */ 1098 if (n == -2) 1099 cp_time += CPUSTATES; 1100 /* 1101 * if we're doing a specific processor, we're one 1102 * processor closer 1103 */ 1104 if (n > 0) 1105 n--; 1106 } 1107 1108 #else /* MULTIPROCESSOR */ 1109 if (namelen == 1 && name[0] == 0) { 1110 name++; 1111 namelen--; 1112 } 1113 node.sysctl_data = curcpu()->ci_schedstate.spc_cp_time; 1114 node.sysctl_size = sizeof(curcpu()->ci_schedstate.spc_cp_time); 1115 #endif /* MULTIPROCESSOR */ 1116 1117 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1118 if (cp_time != NULL) 1119 free(cp_time, M_TEMP); 1120 1121 return (error); 1122 } 1123 1124 #if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) 1125 /* 1126 * sysctl helper routine for kern.sysvipc_info subtree. 1127 */ 1128 1129 #define FILL_PERM(src, dst) do { \ 1130 (dst)._key = (src)._key; \ 1131 (dst).uid = (src).uid; \ 1132 (dst).gid = (src).gid; \ 1133 (dst).cuid = (src).cuid; \ 1134 (dst).cgid = (src).cgid; \ 1135 (dst).mode = (src).mode; \ 1136 (dst)._seq = (src)._seq; \ 1137 } while (/*CONSTCOND*/ 0); 1138 #define FILL_MSG(src, dst) do { \ 1139 FILL_PERM((src).msg_perm, (dst).msg_perm); \ 1140 (dst).msg_qnum = (src).msg_qnum; \ 1141 (dst).msg_qbytes = (src).msg_qbytes; \ 1142 (dst)._msg_cbytes = (src)._msg_cbytes; \ 1143 (dst).msg_lspid = (src).msg_lspid; \ 1144 (dst).msg_lrpid = (src).msg_lrpid; \ 1145 (dst).msg_stime = (src).msg_stime; \ 1146 (dst).msg_rtime = (src).msg_rtime; \ 1147 (dst).msg_ctime = (src).msg_ctime; \ 1148 } while (/*CONSTCOND*/ 0) 1149 #define FILL_SEM(src, dst) do { \ 1150 FILL_PERM((src).sem_perm, (dst).sem_perm); \ 1151 (dst).sem_nsems = (src).sem_nsems; \ 1152 (dst).sem_otime = (src).sem_otime; \ 1153 (dst).sem_ctime = (src).sem_ctime; \ 1154 } while (/*CONSTCOND*/ 0) 1155 #define FILL_SHM(src, dst) do { \ 1156 FILL_PERM((src).shm_perm, (dst).shm_perm); \ 1157 (dst).shm_segsz = (src).shm_segsz; \ 1158 (dst).shm_lpid = (src).shm_lpid; \ 1159 (dst).shm_cpid = (src).shm_cpid; \ 1160 (dst).shm_atime = (src).shm_atime; \ 1161 (dst).shm_dtime = (src).shm_dtime; \ 1162 (dst).shm_ctime = (src).shm_ctime; \ 1163 (dst).shm_nattch = (src).shm_nattch; \ 1164 } while (/*CONSTCOND*/ 0) 1165 1166 static int 1167 sysctl_kern_sysvipc(SYSCTLFN_ARGS) 1168 { 1169 void *where = oldp; 1170 size_t *sizep = oldlenp; 1171 #ifdef SYSVMSG 1172 struct msg_sysctl_info *msgsi = NULL; 1173 #endif 1174 #ifdef SYSVSEM 1175 struct sem_sysctl_info *semsi = NULL; 1176 #endif 1177 #ifdef SYSVSHM 1178 struct shm_sysctl_info *shmsi = NULL; 1179 #endif 1180 size_t infosize, dssize, tsize, buflen; 1181 void *buf = NULL; 1182 char *start; 1183 int32_t nds; 1184 int i, error, ret; 1185 1186 if (namelen != 1) 1187 return (EINVAL); 1188 1189 start = where; 1190 buflen = *sizep; 1191 1192 switch (*name) { 1193 case KERN_SYSVIPC_MSG_INFO: 1194 #ifdef SYSVMSG 1195 infosize = sizeof(msgsi->msginfo); 1196 nds = msginfo.msgmni; 1197 dssize = sizeof(msgsi->msgids[0]); 1198 break; 1199 #else 1200 return (EINVAL); 1201 #endif 1202 case KERN_SYSVIPC_SEM_INFO: 1203 #ifdef SYSVSEM 1204 infosize = sizeof(semsi->seminfo); 1205 nds = seminfo.semmni; 1206 dssize = sizeof(semsi->semids[0]); 1207 break; 1208 #else 1209 return (EINVAL); 1210 #endif 1211 case KERN_SYSVIPC_SHM_INFO: 1212 #ifdef SYSVSHM 1213 infosize = sizeof(shmsi->shminfo); 1214 nds = shminfo.shmmni; 1215 dssize = sizeof(shmsi->shmids[0]); 1216 break; 1217 #else 1218 return (EINVAL); 1219 #endif 1220 default: 1221 return (EINVAL); 1222 } 1223 /* 1224 * Round infosize to 64 bit boundary if requesting more than just 1225 * the info structure or getting the total data size. 1226 */ 1227 if (where == NULL || *sizep > infosize) 1228 infosize = ((infosize + 7) / 8) * 8; 1229 tsize = infosize + nds * dssize; 1230 1231 /* Return just the total size required. */ 1232 if (where == NULL) { 1233 *sizep = tsize; 1234 return (0); 1235 } 1236 1237 /* Not enough room for even the info struct. */ 1238 if (buflen < infosize) { 1239 *sizep = 0; 1240 return (ENOMEM); 1241 } 1242 buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK); 1243 memset(buf, 0, min(tsize, buflen)); 1244 1245 switch (*name) { 1246 #ifdef SYSVMSG 1247 case KERN_SYSVIPC_MSG_INFO: 1248 msgsi = (struct msg_sysctl_info *)buf; 1249 msgsi->msginfo = msginfo; 1250 break; 1251 #endif 1252 #ifdef SYSVSEM 1253 case KERN_SYSVIPC_SEM_INFO: 1254 semsi = (struct sem_sysctl_info *)buf; 1255 semsi->seminfo = seminfo; 1256 break; 1257 #endif 1258 #ifdef SYSVSHM 1259 case KERN_SYSVIPC_SHM_INFO: 1260 shmsi = (struct shm_sysctl_info *)buf; 1261 shmsi->shminfo = shminfo; 1262 break; 1263 #endif 1264 } 1265 buflen -= infosize; 1266 1267 ret = 0; 1268 if (buflen > 0) { 1269 /* Fill in the IPC data structures. */ 1270 for (i = 0; i < nds; i++) { 1271 if (buflen < dssize) { 1272 ret = ENOMEM; 1273 break; 1274 } 1275 switch (*name) { 1276 #ifdef SYSVMSG 1277 case KERN_SYSVIPC_MSG_INFO: 1278 FILL_MSG(msqids[i], msgsi->msgids[i]); 1279 break; 1280 #endif 1281 #ifdef SYSVSEM 1282 case KERN_SYSVIPC_SEM_INFO: 1283 FILL_SEM(sema[i], semsi->semids[i]); 1284 break; 1285 #endif 1286 #ifdef SYSVSHM 1287 case KERN_SYSVIPC_SHM_INFO: 1288 FILL_SHM(shmsegs[i], shmsi->shmids[i]); 1289 break; 1290 #endif 1291 } 1292 buflen -= dssize; 1293 } 1294 } 1295 *sizep -= buflen; 1296 error = copyout(buf, start, *sizep); 1297 /* If copyout succeeded, use return code set earlier. */ 1298 if (error == 0) 1299 error = ret; 1300 if (buf) 1301 free(buf, M_TEMP); 1302 return (error); 1303 } 1304 1305 #undef FILL_PERM 1306 #undef FILL_MSG 1307 #undef FILL_SEM 1308 #undef FILL_SHM 1309 1310 #endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */ 1311 1312 #if NPTY > 0 1313 /* 1314 * sysctl helper routine for kern.maxptys. ensures that any new value 1315 * is acceptable to the pty subsystem. 1316 */ 1317 static int 1318 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1319 { 1320 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1321 int error, max; 1322 struct sysctlnode node; 1323 1324 /* get current value of maxptys */ 1325 max = pty_maxptys(0, 0); 1326 1327 node = *rnode; 1328 node.sysctl_data = &max; 1329 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1330 if (error || newp == NULL) 1331 return (error); 1332 1333 if (max != pty_maxptys(max, 1)) 1334 return (EINVAL); 1335 1336 return (0); 1337 } 1338 #endif /* NPTY > 0 */ 1339 1340 /* 1341 * sysctl helper routine for kern.sbmax. basically just ensures that 1342 * any new value is not too small. 1343 */ 1344 static int 1345 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1346 { 1347 int error, new_sbmax; 1348 struct sysctlnode node; 1349 1350 new_sbmax = sb_max; 1351 node = *rnode; 1352 node.sysctl_data = &new_sbmax; 1353 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1354 if (error || newp == NULL) 1355 return (error); 1356 1357 error = sb_max_set(new_sbmax); 1358 1359 return (error); 1360 } 1361 1362 /* 1363 * sysctl helper routine for kern.urandom node. picks a random number 1364 * for you. 1365 */ 1366 static int 1367 sysctl_kern_urnd(SYSCTLFN_ARGS) 1368 { 1369 #if NRND > 0 1370 int v; 1371 1372 if (rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY) == sizeof(v)) { 1373 struct sysctlnode node = *rnode; 1374 node.sysctl_data = &v; 1375 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1376 } 1377 else 1378 return (EIO); /*XXX*/ 1379 #else 1380 return (EOPNOTSUPP); 1381 #endif 1382 } 1383 1384 /* 1385 * sysctl helper routine to do kern.lwp.* work. 1386 */ 1387 static int 1388 sysctl_kern_lwp(SYSCTLFN_ARGS) 1389 { 1390 struct kinfo_lwp klwp; 1391 struct proc *p; 1392 struct lwp *l2; 1393 char *where, *dp; 1394 int pid, elem_size, elem_count; 1395 int buflen, needed, error; 1396 1397 dp = where = oldp; 1398 buflen = where != NULL ? *oldlenp : 0; 1399 error = needed = 0; 1400 1401 if (newp != NULL || namelen != 4) 1402 return (EINVAL); 1403 pid = name[1]; 1404 elem_size = name[2]; 1405 elem_count = name[3]; 1406 1407 p = pfind(pid); 1408 if (p == NULL) 1409 return (ESRCH); 1410 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1411 if (buflen >= elem_size && elem_count > 0) { 1412 fill_lwp(l2, &klwp); 1413 /* 1414 * Copy out elem_size, but not larger than 1415 * the size of a struct kinfo_proc2. 1416 */ 1417 error = copyout(&klwp, dp, 1418 min(sizeof(klwp), elem_size)); 1419 if (error) 1420 goto cleanup; 1421 dp += elem_size; 1422 buflen -= elem_size; 1423 elem_count--; 1424 } 1425 needed += elem_size; 1426 } 1427 1428 if (where != NULL) { 1429 *oldlenp = dp - where; 1430 if (needed > *oldlenp) 1431 return (ENOMEM); 1432 } else { 1433 needed += KERN_PROCSLOP; 1434 *oldlenp = needed; 1435 } 1436 return (0); 1437 cleanup: 1438 return (error); 1439 } 1440 1441 /* 1442 * sysctl helper routine for kern.forkfsleep node. ensures that the 1443 * given value is not too large or two small, and is at least one 1444 * timer tick if not zero. 1445 */ 1446 static int 1447 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1448 { 1449 /* userland sees value in ms, internally is in ticks */ 1450 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1451 int error, timo, lsleep; 1452 struct sysctlnode node; 1453 1454 lsleep = forkfsleep * 1000 / hz; 1455 node = *rnode; 1456 node.sysctl_data = &lsleep; 1457 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1458 if (error || newp == NULL) 1459 return (error); 1460 1461 /* refuse negative values, and overly 'long time' */ 1462 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1463 return (EINVAL); 1464 1465 timo = mstohz(lsleep); 1466 1467 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1468 if (lsleep != 0 && timo == 0) 1469 forkfsleep = 1; 1470 else 1471 forkfsleep = timo; 1472 1473 return (0); 1474 } 1475 1476 /* 1477 * sysctl helper routine for kern.somaxkva. ensures that the given 1478 * value is not too small. 1479 * (XXX should we maybe make sure it's not too large as well?) 1480 */ 1481 static int 1482 sysctl_kern_somaxkva(SYSCTLFN_ARGS) 1483 { 1484 int error, new_somaxkva; 1485 struct sysctlnode node; 1486 1487 new_somaxkva = somaxkva; 1488 node = *rnode; 1489 node.sysctl_data = &new_somaxkva; 1490 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1491 if (error || newp == NULL) 1492 return (error); 1493 1494 if (new_somaxkva < (16 * 1024 * 1024)) /* sanity */ 1495 return (EINVAL); 1496 somaxkva = new_somaxkva; 1497 1498 return (error); 1499 } 1500 1501 /* 1502 * sysctl helper routine for kern.root_partition 1503 */ 1504 static int 1505 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1506 { 1507 int rootpart = DISKPART(rootdev); 1508 struct sysctlnode node = *rnode; 1509 1510 node.sysctl_data = &rootpart; 1511 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1512 } 1513 1514 /* 1515 * sysctl helper function for kern.drivers 1516 */ 1517 static int 1518 sysctl_kern_drivers(SYSCTLFN_ARGS) 1519 { 1520 int error; 1521 size_t buflen; 1522 struct kinfo_drivers kd; 1523 char *start, *where; 1524 const char *dname; 1525 int i; 1526 extern struct devsw_conv *devsw_conv; 1527 extern int max_devsw_convs; 1528 1529 if (newp != NULL || namelen != 0) 1530 return (EINVAL); 1531 1532 start = where = oldp; 1533 buflen = *oldlenp; 1534 if (where == NULL) { 1535 *oldlenp = max_devsw_convs * sizeof kd; 1536 return 0; 1537 } 1538 1539 /* 1540 * An array of kinfo_drivers structures 1541 */ 1542 error = 0; 1543 for (i = 0; i < max_devsw_convs; i++) { 1544 dname = devsw_conv[i].d_name; 1545 if (dname == NULL) 1546 continue; 1547 if (buflen < sizeof kd) { 1548 error = ENOMEM; 1549 break; 1550 } 1551 kd.d_bmajor = devsw_conv[i].d_bmajor; 1552 kd.d_cmajor = devsw_conv[i].d_cmajor; 1553 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1554 error = copyout(&kd, where, sizeof kd); 1555 if (error != 0) 1556 break; 1557 buflen -= sizeof kd; 1558 where += sizeof kd; 1559 } 1560 *oldlenp = where - start; 1561 return error; 1562 } 1563 1564 static int 1565 sysctl_doeproc(SYSCTLFN_ARGS) 1566 { 1567 struct eproc eproc; 1568 struct kinfo_proc2 kproc2; 1569 struct kinfo_proc *dp; 1570 struct proc *p; 1571 const struct proclist_desc *pd; 1572 char *where, *dp2; 1573 int type, op, arg; 1574 u_int elem_size, elem_count; 1575 size_t buflen, needed; 1576 int error; 1577 1578 dp = oldp; 1579 dp2 = where = oldp; 1580 buflen = where != NULL ? *oldlenp : 0; 1581 error = 0; 1582 needed = 0; 1583 type = rnode->sysctl_num; 1584 1585 if (type == KERN_PROC) { 1586 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 1587 return (EINVAL); 1588 op = name[0]; 1589 if (op != KERN_PROC_ALL) 1590 arg = name[1]; 1591 else 1592 arg = 0; /* Quell compiler warning */ 1593 elem_size = elem_count = 0; /* Ditto */ 1594 } else { 1595 if (namelen != 4) 1596 return (EINVAL); 1597 op = name[0]; 1598 arg = name[1]; 1599 elem_size = name[2]; 1600 elem_count = name[3]; 1601 } 1602 1603 proclist_lock_read(); 1604 1605 pd = proclists; 1606 again: 1607 for (p = LIST_FIRST(pd->pd_list); p != NULL; p = LIST_NEXT(p, p_list)) { 1608 /* 1609 * Skip embryonic processes. 1610 */ 1611 if (p->p_stat == SIDL) 1612 continue; 1613 /* 1614 * TODO - make more efficient (see notes below). 1615 * do by session. 1616 */ 1617 switch (op) { 1618 1619 case KERN_PROC_PID: 1620 /* could do this with just a lookup */ 1621 if (p->p_pid != (pid_t)arg) 1622 continue; 1623 break; 1624 1625 case KERN_PROC_PGRP: 1626 /* could do this by traversing pgrp */ 1627 if (p->p_pgrp->pg_id != (pid_t)arg) 1628 continue; 1629 break; 1630 1631 case KERN_PROC_SESSION: 1632 if (p->p_session->s_sid != (pid_t)arg) 1633 continue; 1634 break; 1635 1636 case KERN_PROC_TTY: 1637 if (arg == (int) KERN_PROC_TTY_REVOKE) { 1638 if ((p->p_flag & P_CONTROLT) == 0 || 1639 p->p_session->s_ttyp == NULL || 1640 p->p_session->s_ttyvp != NULL) 1641 continue; 1642 } else if ((p->p_flag & P_CONTROLT) == 0 || 1643 p->p_session->s_ttyp == NULL) { 1644 if ((dev_t)arg != KERN_PROC_TTY_NODEV) 1645 continue; 1646 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) 1647 continue; 1648 break; 1649 1650 case KERN_PROC_UID: 1651 if (p->p_ucred->cr_uid != (uid_t)arg) 1652 continue; 1653 break; 1654 1655 case KERN_PROC_RUID: 1656 if (p->p_cred->p_ruid != (uid_t)arg) 1657 continue; 1658 break; 1659 1660 case KERN_PROC_GID: 1661 if (p->p_ucred->cr_gid != (uid_t)arg) 1662 continue; 1663 break; 1664 1665 case KERN_PROC_RGID: 1666 if (p->p_cred->p_rgid != (uid_t)arg) 1667 continue; 1668 break; 1669 1670 case KERN_PROC_ALL: 1671 /* allow everything */ 1672 break; 1673 1674 default: 1675 error = EINVAL; 1676 goto cleanup; 1677 } 1678 if (type == KERN_PROC) { 1679 if (buflen >= sizeof(struct kinfo_proc)) { 1680 fill_eproc(p, &eproc); 1681 error = copyout(p, &dp->kp_proc, 1682 sizeof(struct proc)); 1683 if (error) 1684 goto cleanup; 1685 error = copyout(&eproc, &dp->kp_eproc, 1686 sizeof(eproc)); 1687 if (error) 1688 goto cleanup; 1689 dp++; 1690 buflen -= sizeof(struct kinfo_proc); 1691 } 1692 needed += sizeof(struct kinfo_proc); 1693 } else { /* KERN_PROC2 */ 1694 if (buflen >= elem_size && elem_count > 0) { 1695 fill_kproc2(p, &kproc2); 1696 /* 1697 * Copy out elem_size, but not larger than 1698 * the size of a struct kinfo_proc2. 1699 */ 1700 error = copyout(&kproc2, dp2, 1701 min(sizeof(kproc2), elem_size)); 1702 if (error) 1703 goto cleanup; 1704 dp2 += elem_size; 1705 buflen -= elem_size; 1706 elem_count--; 1707 } 1708 needed += elem_size; 1709 } 1710 } 1711 pd++; 1712 if (pd->pd_list != NULL) 1713 goto again; 1714 proclist_unlock_read(); 1715 1716 if (where != NULL) { 1717 if (type == KERN_PROC) 1718 *oldlenp = (char *)dp - where; 1719 else 1720 *oldlenp = dp2 - where; 1721 if (needed > *oldlenp) 1722 return (ENOMEM); 1723 } else { 1724 needed += KERN_PROCSLOP; 1725 *oldlenp = needed; 1726 } 1727 return (0); 1728 cleanup: 1729 proclist_unlock_read(); 1730 return (error); 1731 } 1732 1733 /* 1734 * sysctl helper routine for kern.proc_args pseudo-subtree. 1735 */ 1736 static int 1737 sysctl_kern_proc_args(SYSCTLFN_ARGS) 1738 { 1739 struct ps_strings pss; 1740 struct proc *p, *up = l->l_proc; 1741 size_t len, upper_bound, xlen, i; 1742 struct uio auio; 1743 struct iovec aiov; 1744 vaddr_t argv; 1745 pid_t pid; 1746 int nargv, type, error; 1747 char *arg; 1748 char *tmp; 1749 1750 if (newp != NULL || namelen != 2) 1751 return (EINVAL); 1752 pid = name[0]; 1753 type = name[1]; 1754 1755 switch (type) { 1756 case KERN_PROC_ARGV: 1757 case KERN_PROC_NARGV: 1758 case KERN_PROC_ENV: 1759 case KERN_PROC_NENV: 1760 /* ok */ 1761 break; 1762 default: 1763 return (EINVAL); 1764 } 1765 1766 /* check pid */ 1767 if ((p = pfind(pid)) == NULL) 1768 return (EINVAL); 1769 1770 /* only root or same user change look at the environment */ 1771 if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) { 1772 if (up->p_ucred->cr_uid != 0) { 1773 if (up->p_cred->p_ruid != p->p_cred->p_ruid || 1774 up->p_cred->p_ruid != p->p_cred->p_svuid) 1775 return (EPERM); 1776 } 1777 } 1778 1779 if (oldp == NULL) { 1780 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 1781 *oldlenp = sizeof (int); 1782 else 1783 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 1784 return (0); 1785 } 1786 1787 /* 1788 * Zombies don't have a stack, so we can't read their psstrings. 1789 * System processes also don't have a user stack. 1790 */ 1791 if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0) 1792 return (EINVAL); 1793 1794 /* 1795 * Lock the process down in memory. 1796 */ 1797 /* XXXCDC: how should locking work here? */ 1798 if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) 1799 return (EFAULT); 1800 1801 p->p_vmspace->vm_refcnt++; /* XXX */ 1802 1803 /* 1804 * Allocate a temporary buffer to hold the arguments. 1805 */ 1806 arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK); 1807 1808 /* 1809 * Read in the ps_strings structure. 1810 */ 1811 aiov.iov_base = &pss; 1812 aiov.iov_len = sizeof(pss); 1813 auio.uio_iov = &aiov; 1814 auio.uio_iovcnt = 1; 1815 auio.uio_offset = (vaddr_t)p->p_psstr; 1816 auio.uio_resid = sizeof(pss); 1817 auio.uio_segflg = UIO_SYSSPACE; 1818 auio.uio_rw = UIO_READ; 1819 auio.uio_procp = NULL; 1820 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1821 if (error) 1822 goto done; 1823 1824 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 1825 memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv)); 1826 else 1827 memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv)); 1828 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 1829 error = copyout(&nargv, oldp, sizeof(nargv)); 1830 *oldlenp = sizeof(nargv); 1831 goto done; 1832 } 1833 /* 1834 * Now read the address of the argument vector. 1835 */ 1836 switch (type) { 1837 case KERN_PROC_ARGV: 1838 /* XXX compat32 stuff here */ 1839 memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp)); 1840 break; 1841 case KERN_PROC_ENV: 1842 memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp)); 1843 break; 1844 default: 1845 return (EINVAL); 1846 } 1847 auio.uio_offset = (off_t)(long)tmp; 1848 aiov.iov_base = &argv; 1849 aiov.iov_len = sizeof(argv); 1850 auio.uio_iov = &aiov; 1851 auio.uio_iovcnt = 1; 1852 auio.uio_resid = sizeof(argv); 1853 auio.uio_segflg = UIO_SYSSPACE; 1854 auio.uio_rw = UIO_READ; 1855 auio.uio_procp = NULL; 1856 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1857 if (error) 1858 goto done; 1859 1860 /* 1861 * Now copy in the actual argument vector, one page at a time, 1862 * since we don't know how long the vector is (though, we do 1863 * know how many NUL-terminated strings are in the vector). 1864 */ 1865 len = 0; 1866 upper_bound = *oldlenp; 1867 for (; nargv != 0 && len < upper_bound; len += xlen) { 1868 aiov.iov_base = arg; 1869 aiov.iov_len = PAGE_SIZE; 1870 auio.uio_iov = &aiov; 1871 auio.uio_iovcnt = 1; 1872 auio.uio_offset = argv + len; 1873 xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK); 1874 auio.uio_resid = xlen; 1875 auio.uio_segflg = UIO_SYSSPACE; 1876 auio.uio_rw = UIO_READ; 1877 auio.uio_procp = NULL; 1878 error = uvm_io(&p->p_vmspace->vm_map, &auio); 1879 if (error) 1880 goto done; 1881 1882 for (i = 0; i < xlen && nargv != 0; i++) { 1883 if (arg[i] == '\0') 1884 nargv--; /* one full string */ 1885 } 1886 1887 /* 1888 * Make sure we don't copyout past the end of the user's 1889 * buffer. 1890 */ 1891 if (len + i > upper_bound) 1892 i = upper_bound - len; 1893 1894 error = copyout(arg, (char *)oldp + len, i); 1895 if (error) 1896 break; 1897 1898 if (nargv == 0) { 1899 len += i; 1900 break; 1901 } 1902 } 1903 *oldlenp = len; 1904 1905 done: 1906 uvmspace_free(p->p_vmspace); 1907 1908 free(arg, M_TEMP); 1909 return (error); 1910 } 1911 1912 /* 1913 * sysctl helper routine for hw.usermem and hw.usermem64. values are 1914 * calculate on the fly taking into account integer overflow and the 1915 * current wired count. 1916 */ 1917 static int 1918 sysctl_hw_usermem(SYSCTLFN_ARGS) 1919 { 1920 u_int ui; 1921 u_quad_t uq; 1922 struct sysctlnode node; 1923 1924 node = *rnode; 1925 switch (rnode->sysctl_num) { 1926 case HW_USERMEM: 1927 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 1928 ui = UINT_MAX; 1929 else 1930 ui *= PAGE_SIZE; 1931 node.sysctl_data = &ui; 1932 break; 1933 case HW_USERMEM64: 1934 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 1935 node.sysctl_data = &uq; 1936 break; 1937 default: 1938 return (EINVAL); 1939 } 1940 1941 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1942 } 1943 1944 /* 1945 * sysctl helper routine for kern.cnmagic node. pulls the old value 1946 * out, encoded, and stuffs the new value in for decoding. 1947 */ 1948 static int 1949 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 1950 { 1951 char magic[CNS_LEN]; 1952 int error; 1953 struct sysctlnode node; 1954 1955 if (oldp) 1956 cn_get_magic(magic, CNS_LEN); 1957 node = *rnode; 1958 node.sysctl_data = &magic[0]; 1959 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1960 if (error || newp == NULL) 1961 return (error); 1962 1963 return (cn_set_magic(magic)); 1964 } 1965 1966 /* 1967 * ******************************************************************** 1968 * section 3: public helper routines that are used for more than one 1969 * node 1970 * ******************************************************************** 1971 */ 1972 1973 /* 1974 * sysctl helper routine for the kern.root_device node and some ports' 1975 * machdep.root_device nodes. 1976 */ 1977 int 1978 sysctl_root_device(SYSCTLFN_ARGS) 1979 { 1980 struct sysctlnode node; 1981 1982 node = *rnode; 1983 node.sysctl_data = root_device->dv_xname; 1984 node.sysctl_size = strlen(root_device->dv_xname) + 1; 1985 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1986 } 1987 1988 /* 1989 * sysctl helper routine for kern.consdev, dependent on the current 1990 * state of the console. also used for machdep.console_device on some 1991 * ports. 1992 */ 1993 int 1994 sysctl_consdev(SYSCTLFN_ARGS) 1995 { 1996 dev_t consdev; 1997 struct sysctlnode node; 1998 1999 if (cn_tab != NULL) 2000 consdev = cn_tab->cn_dev; 2001 else 2002 consdev = NODEV; 2003 node = *rnode; 2004 node.sysctl_data = &consdev; 2005 node.sysctl_size = sizeof(consdev); 2006 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2007 } 2008 2009 /* 2010 * ******************************************************************** 2011 * section 4: support for some helpers 2012 * ******************************************************************** 2013 */ 2014 2015 /* 2016 * Fill in a kinfo_proc2 structure for the specified process. 2017 */ 2018 static void 2019 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki) 2020 { 2021 struct tty *tp; 2022 struct lwp *l; 2023 struct timeval ut, st; 2024 2025 memset(ki, 0, sizeof(*ki)); 2026 2027 ki->p_paddr = PTRTOINT64(p); 2028 ki->p_fd = PTRTOINT64(p->p_fd); 2029 ki->p_cwdi = PTRTOINT64(p->p_cwdi); 2030 ki->p_stats = PTRTOINT64(p->p_stats); 2031 ki->p_limit = PTRTOINT64(p->p_limit); 2032 ki->p_vmspace = PTRTOINT64(p->p_vmspace); 2033 ki->p_sigacts = PTRTOINT64(p->p_sigacts); 2034 ki->p_sess = PTRTOINT64(p->p_session); 2035 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2036 ki->p_ru = PTRTOINT64(p->p_ru); 2037 2038 ki->p_eflag = 0; 2039 ki->p_exitsig = p->p_exitsig; 2040 ki->p_flag = p->p_flag; 2041 2042 ki->p_pid = p->p_pid; 2043 if (p->p_pptr) 2044 ki->p_ppid = p->p_pptr->p_pid; 2045 else 2046 ki->p_ppid = 0; 2047 ki->p_sid = p->p_session->s_sid; 2048 ki->p__pgid = p->p_pgrp->pg_id; 2049 2050 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2051 2052 ki->p_uid = p->p_ucred->cr_uid; 2053 ki->p_ruid = p->p_cred->p_ruid; 2054 ki->p_gid = p->p_ucred->cr_gid; 2055 ki->p_rgid = p->p_cred->p_rgid; 2056 ki->p_svuid = p->p_cred->p_svuid; 2057 ki->p_svgid = p->p_cred->p_svgid; 2058 2059 memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups, 2060 min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups))); 2061 ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups; 2062 2063 ki->p_jobc = p->p_pgrp->pg_jobc; 2064 if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) { 2065 ki->p_tdev = tp->t_dev; 2066 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2067 ki->p_tsess = PTRTOINT64(tp->t_session); 2068 } else { 2069 ki->p_tdev = NODEV; 2070 } 2071 2072 ki->p_estcpu = p->p_estcpu; 2073 ki->p_rtime_sec = p->p_rtime.tv_sec; 2074 ki->p_rtime_usec = p->p_rtime.tv_usec; 2075 ki->p_cpticks = p->p_cpticks; 2076 ki->p_pctcpu = p->p_pctcpu; 2077 2078 ki->p_uticks = p->p_uticks; 2079 ki->p_sticks = p->p_sticks; 2080 ki->p_iticks = p->p_iticks; 2081 2082 ki->p_tracep = PTRTOINT64(p->p_tracep); 2083 ki->p_traceflag = p->p_traceflag; 2084 2085 2086 memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t)); 2087 memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t)); 2088 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2089 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2090 2091 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2092 ki->p_realstat = p->p_stat; 2093 ki->p_nice = p->p_nice; 2094 2095 ki->p_xstat = p->p_xstat; 2096 ki->p_acflag = p->p_acflag; 2097 2098 strncpy(ki->p_comm, p->p_comm, 2099 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2100 2101 strncpy(ki->p_login, p->p_session->s_login, 2102 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 2103 2104 ki->p_nlwps = p->p_nlwps; 2105 ki->p_nrlwps = p->p_nrlwps; 2106 ki->p_realflag = p->p_flag; 2107 2108 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2109 ki->p_vm_rssize = 0; 2110 ki->p_vm_tsize = 0; 2111 ki->p_vm_dsize = 0; 2112 ki->p_vm_ssize = 0; 2113 l = NULL; 2114 } else { 2115 struct vmspace *vm = p->p_vmspace; 2116 2117 ki->p_vm_rssize = vm_resident_count(vm); 2118 ki->p_vm_tsize = vm->vm_tsize; 2119 ki->p_vm_dsize = vm->vm_dsize; 2120 ki->p_vm_ssize = vm->vm_ssize; 2121 2122 /* Pick a "representative" LWP */ 2123 l = proc_representative_lwp(p); 2124 ki->p_forw = PTRTOINT64(l->l_forw); 2125 ki->p_back = PTRTOINT64(l->l_back); 2126 ki->p_addr = PTRTOINT64(l->l_addr); 2127 ki->p_stat = l->l_stat; 2128 ki->p_flag |= l->l_flag; 2129 ki->p_swtime = l->l_swtime; 2130 ki->p_slptime = l->l_slptime; 2131 if (l->l_stat == LSONPROC) { 2132 KDASSERT(l->l_cpu != NULL); 2133 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2134 } else 2135 ki->p_schedflags = 0; 2136 ki->p_holdcnt = l->l_holdcnt; 2137 ki->p_priority = l->l_priority; 2138 ki->p_usrpri = l->l_usrpri; 2139 if (l->l_wmesg) 2140 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 2141 ki->p_wchan = PTRTOINT64(l->l_wchan); 2142 2143 } 2144 2145 if (p->p_session->s_ttyvp) 2146 ki->p_eflag |= EPROC_CTTY; 2147 if (SESS_LEADER(p)) 2148 ki->p_eflag |= EPROC_SLEADER; 2149 2150 /* XXX Is this double check necessary? */ 2151 if (P_ZOMBIE(p)) { 2152 ki->p_uvalid = 0; 2153 } else { 2154 ki->p_uvalid = 1; 2155 2156 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 2157 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 2158 2159 calcru(p, &ut, &st, 0); 2160 ki->p_uutime_sec = ut.tv_sec; 2161 ki->p_uutime_usec = ut.tv_usec; 2162 ki->p_ustime_sec = st.tv_sec; 2163 ki->p_ustime_usec = st.tv_usec; 2164 2165 ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss; 2166 ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss; 2167 ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss; 2168 ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss; 2169 ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt; 2170 ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt; 2171 ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap; 2172 ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock; 2173 ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock; 2174 ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd; 2175 ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv; 2176 ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals; 2177 ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw; 2178 ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw; 2179 2180 timeradd(&p->p_stats->p_cru.ru_utime, 2181 &p->p_stats->p_cru.ru_stime, &ut); 2182 ki->p_uctime_sec = ut.tv_sec; 2183 ki->p_uctime_usec = ut.tv_usec; 2184 } 2185 #ifdef MULTIPROCESSOR 2186 if (l && l->l_cpu != NULL) 2187 ki->p_cpuid = l->l_cpu->ci_cpuid; 2188 else 2189 #endif 2190 ki->p_cpuid = KI_NOCPU; 2191 } 2192 2193 /* 2194 * Fill in a kinfo_lwp structure for the specified lwp. 2195 */ 2196 static void 2197 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 2198 { 2199 2200 kl->l_forw = PTRTOINT64(l->l_forw); 2201 kl->l_back = PTRTOINT64(l->l_back); 2202 kl->l_laddr = PTRTOINT64(l); 2203 kl->l_addr = PTRTOINT64(l->l_addr); 2204 kl->l_stat = l->l_stat; 2205 kl->l_lid = l->l_lid; 2206 kl->l_flag = l->l_flag; 2207 2208 kl->l_swtime = l->l_swtime; 2209 kl->l_slptime = l->l_slptime; 2210 if (l->l_stat == LSONPROC) { 2211 KDASSERT(l->l_cpu != NULL); 2212 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2213 } else 2214 kl->l_schedflags = 0; 2215 kl->l_holdcnt = l->l_holdcnt; 2216 kl->l_priority = l->l_priority; 2217 kl->l_usrpri = l->l_usrpri; 2218 if (l->l_wmesg) 2219 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 2220 kl->l_wchan = PTRTOINT64(l->l_wchan); 2221 #ifdef MULTIPROCESSOR 2222 if (l->l_cpu != NULL) 2223 kl->l_cpuid = l->l_cpu->ci_cpuid; 2224 else 2225 #endif 2226 kl->l_cpuid = KI_NOCPU; 2227 } 2228 2229 /* 2230 * Fill in an eproc structure for the specified process. 2231 */ 2232 void 2233 fill_eproc(struct proc *p, struct eproc *ep) 2234 { 2235 struct tty *tp; 2236 struct lwp *l; 2237 2238 ep->e_paddr = p; 2239 ep->e_sess = p->p_session; 2240 ep->e_pcred = *p->p_cred; 2241 ep->e_ucred = *p->p_ucred; 2242 if (p->p_stat == SIDL || P_ZOMBIE(p)) { 2243 ep->e_vm.vm_rssize = 0; 2244 ep->e_vm.vm_tsize = 0; 2245 ep->e_vm.vm_dsize = 0; 2246 ep->e_vm.vm_ssize = 0; 2247 /* ep->e_vm.vm_pmap = XXX; */ 2248 } else { 2249 struct vmspace *vm = p->p_vmspace; 2250 2251 ep->e_vm.vm_rssize = vm_resident_count(vm); 2252 ep->e_vm.vm_tsize = vm->vm_tsize; 2253 ep->e_vm.vm_dsize = vm->vm_dsize; 2254 ep->e_vm.vm_ssize = vm->vm_ssize; 2255 2256 /* Pick a "representative" LWP */ 2257 l = proc_representative_lwp(p); 2258 2259 if (l->l_wmesg) 2260 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 2261 } 2262 if (p->p_pptr) 2263 ep->e_ppid = p->p_pptr->p_pid; 2264 else 2265 ep->e_ppid = 0; 2266 ep->e_pgid = p->p_pgrp->pg_id; 2267 ep->e_sid = ep->e_sess->s_sid; 2268 ep->e_jobc = p->p_pgrp->pg_jobc; 2269 if ((p->p_flag & P_CONTROLT) && 2270 (tp = ep->e_sess->s_ttyp)) { 2271 ep->e_tdev = tp->t_dev; 2272 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 2273 ep->e_tsess = tp->t_session; 2274 } else 2275 ep->e_tdev = NODEV; 2276 2277 ep->e_xsize = ep->e_xrssize = 0; 2278 ep->e_xccount = ep->e_xswrss = 0; 2279 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 2280 if (SESS_LEADER(p)) 2281 ep->e_flag |= EPROC_SLEADER; 2282 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 2283 } 2284
Indexes created Mon Sep 22 13:09:51 GMT 2025