init_sysctl.c revision 1.125.2.5
1 /* $NetBSD: init_sysctl.c,v 1.125.2.5 2008/12/27 23:14:24 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2003, 2007, 2008 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, and by Andrew Doran. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: init_sysctl.c,v 1.125.2.5 2008/12/27 23:14:24 christos Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_compat_netbsd32.h" 37 #include "opt_compat_netbsd.h" 38 #include "opt_sa.h" 39 #include "opt_posix.h" 40 #include "pty.h" 41 #include "rnd.h" 42 43 #include <sys/types.h> 44 #include <sys/param.h> 45 #include <sys/sysctl.h> 46 #include <sys/cpu.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/filedesc.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 #include <sys/stat.h> 69 #include <sys/kauth.h> 70 #include <sys/ktrace.h> 71 #include <sys/ksem.h> 72 73 #include <miscfs/specfs/specdev.h> 74 75 #ifdef COMPAT_NETBSD32 76 #include <compat/netbsd32/netbsd32.h> 77 #endif 78 #ifdef COMPAT_50 79 #include <compat/sys/time.h> 80 #endif 81 82 #ifdef KERN_SA 83 #include <sys/sa.h> 84 #endif 85 86 #include <sys/cpu.h> 87 88 #if defined(MODULAR) || defined(P1003_1B_SEMAPHORE) 89 int posix_semaphores = 200112; 90 #else 91 int posix_semaphores; 92 #endif 93 94 int security_setidcore_dump; 95 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 96 uid_t security_setidcore_owner = 0; 97 gid_t security_setidcore_group = 0; 98 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 99 100 static const u_int sysctl_flagmap[] = { 101 PK_ADVLOCK, P_ADVLOCK, 102 PK_EXEC, P_EXEC, 103 PK_NOCLDWAIT, P_NOCLDWAIT, 104 PK_32, P_32, 105 PK_CLDSIGIGN, P_CLDSIGIGN, 106 PK_SUGID, P_SUGID, 107 0 108 }; 109 110 static const u_int sysctl_sflagmap[] = { 111 PS_NOCLDSTOP, P_NOCLDSTOP, 112 PS_WEXIT, P_WEXIT, 113 PS_STOPFORK, P_STOPFORK, 114 PS_STOPEXEC, P_STOPEXEC, 115 PS_STOPEXIT, P_STOPEXIT, 116 0 117 }; 118 119 static const u_int sysctl_slflagmap[] = { 120 PSL_TRACED, P_TRACED, 121 PSL_FSTRACE, P_FSTRACE, 122 PSL_CHTRACED, P_CHTRACED, 123 PSL_SYSCALL, P_SYSCALL, 124 0 125 }; 126 127 static const u_int sysctl_lflagmap[] = { 128 PL_CONTROLT, P_CONTROLT, 129 PL_PPWAIT, P_PPWAIT, 130 0 131 }; 132 133 static const u_int sysctl_stflagmap[] = { 134 PST_PROFIL, P_PROFIL, 135 0 136 137 }; 138 139 static const u_int sysctl_lwpflagmap[] = { 140 LW_INMEM, P_INMEM, 141 LW_SINTR, P_SINTR, 142 LW_SYSTEM, P_SYSTEM, 143 LW_SA, P_SA, /* WRS ??? */ 144 0 145 }; 146 147 static const u_int sysctl_lwpprflagmap[] = { 148 LPR_DETACHED, L_DETACHED, 149 0 150 }; 151 152 /* 153 * try over estimating by 5 procs/lwps 154 */ 155 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 156 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 157 158 static int dcopyout(struct lwp *, const void *, void *, size_t); 159 160 static int 161 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 162 { 163 int error; 164 165 error = copyout(kaddr, uaddr, len); 166 ktrmibio(-1, UIO_READ, uaddr, len, error); 167 168 return error; 169 } 170 171 #ifdef DIAGNOSTIC 172 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 173 #endif 174 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 175 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 176 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 177 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 178 static int sysctl_setlen(SYSCTLFN_PROTO); 179 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 180 static int sysctl_kern_file(SYSCTLFN_PROTO); 181 static int sysctl_msgbuf(SYSCTLFN_PROTO); 182 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 183 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 184 #if NPTY > 0 185 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 186 #endif /* NPTY > 0 */ 187 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 188 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 189 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 190 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 191 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 192 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 193 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 194 static int sysctl_kern_file2(SYSCTLFN_PROTO); 195 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 196 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 197 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 198 static int sysctl_doeproc(SYSCTLFN_PROTO); 199 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 200 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 201 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 202 203 static u_int sysctl_map_flags(const u_int *, u_int); 204 static void fill_kproc2(struct proc *, struct kinfo_proc2 *, bool); 205 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 206 static void fill_file(struct kinfo_file *, const file_t *, const fdfile_t *, 207 int, pid_t); 208 209 /* 210 * ******************************************************************** 211 * section 1: setup routines 212 * ******************************************************************** 213 * These functions are stuffed into a link set for sysctl setup 214 * functions. They're never called or referenced from anywhere else. 215 * ******************************************************************** 216 */ 217 218 /* 219 * sets up the base nodes... 220 */ 221 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 222 { 223 224 sysctl_createv(clog, 0, NULL, NULL, 225 CTLFLAG_PERMANENT, 226 CTLTYPE_NODE, "kern", 227 SYSCTL_DESCR("High kernel"), 228 NULL, 0, NULL, 0, 229 CTL_KERN, CTL_EOL); 230 sysctl_createv(clog, 0, NULL, NULL, 231 CTLFLAG_PERMANENT, 232 CTLTYPE_NODE, "vm", 233 SYSCTL_DESCR("Virtual memory"), 234 NULL, 0, NULL, 0, 235 CTL_VM, CTL_EOL); 236 sysctl_createv(clog, 0, NULL, NULL, 237 CTLFLAG_PERMANENT, 238 CTLTYPE_NODE, "vfs", 239 SYSCTL_DESCR("Filesystem"), 240 NULL, 0, NULL, 0, 241 CTL_VFS, CTL_EOL); 242 sysctl_createv(clog, 0, NULL, NULL, 243 CTLFLAG_PERMANENT, 244 CTLTYPE_NODE, "net", 245 SYSCTL_DESCR("Networking"), 246 NULL, 0, NULL, 0, 247 CTL_NET, CTL_EOL); 248 sysctl_createv(clog, 0, NULL, NULL, 249 CTLFLAG_PERMANENT, 250 CTLTYPE_NODE, "debug", 251 SYSCTL_DESCR("Debugging"), 252 NULL, 0, NULL, 0, 253 CTL_DEBUG, CTL_EOL); 254 sysctl_createv(clog, 0, NULL, NULL, 255 CTLFLAG_PERMANENT, 256 CTLTYPE_NODE, "hw", 257 SYSCTL_DESCR("Generic CPU, I/O"), 258 NULL, 0, NULL, 0, 259 CTL_HW, CTL_EOL); 260 sysctl_createv(clog, 0, NULL, NULL, 261 CTLFLAG_PERMANENT, 262 CTLTYPE_NODE, "machdep", 263 SYSCTL_DESCR("Machine dependent"), 264 NULL, 0, NULL, 0, 265 CTL_MACHDEP, CTL_EOL); 266 /* 267 * this node is inserted so that the sysctl nodes in libc can 268 * operate. 269 */ 270 sysctl_createv(clog, 0, NULL, NULL, 271 CTLFLAG_PERMANENT, 272 CTLTYPE_NODE, "user", 273 SYSCTL_DESCR("User-level"), 274 NULL, 0, NULL, 0, 275 CTL_USER, CTL_EOL); 276 sysctl_createv(clog, 0, NULL, NULL, 277 CTLFLAG_PERMANENT, 278 CTLTYPE_NODE, "ddb", 279 SYSCTL_DESCR("In-kernel debugger"), 280 NULL, 0, NULL, 0, 281 CTL_DDB, CTL_EOL); 282 sysctl_createv(clog, 0, NULL, NULL, 283 CTLFLAG_PERMANENT, 284 CTLTYPE_NODE, "proc", 285 SYSCTL_DESCR("Per-process"), 286 NULL, 0, NULL, 0, 287 CTL_PROC, CTL_EOL); 288 sysctl_createv(clog, 0, NULL, NULL, 289 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 290 CTLTYPE_NODE, "vendor", 291 SYSCTL_DESCR("Vendor specific"), 292 NULL, 0, NULL, 0, 293 CTL_VENDOR, CTL_EOL); 294 sysctl_createv(clog, 0, NULL, NULL, 295 CTLFLAG_PERMANENT, 296 CTLTYPE_NODE, "emul", 297 SYSCTL_DESCR("Emulation settings"), 298 NULL, 0, NULL, 0, 299 CTL_EMUL, CTL_EOL); 300 sysctl_createv(clog, 0, NULL, NULL, 301 CTLFLAG_PERMANENT, 302 CTLTYPE_NODE, "security", 303 SYSCTL_DESCR("Security"), 304 NULL, 0, NULL, 0, 305 CTL_SECURITY, CTL_EOL); 306 } 307 308 /* 309 * this setup routine is a replacement for kern_sysctl() 310 */ 311 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 312 { 313 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 314 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 315 extern int dumponpanic; /* defined in kern/subr_prf.c */ 316 const struct sysctlnode *rnode; 317 318 sysctl_createv(clog, 0, NULL, NULL, 319 CTLFLAG_PERMANENT, 320 CTLTYPE_NODE, "kern", NULL, 321 NULL, 0, NULL, 0, 322 CTL_KERN, CTL_EOL); 323 324 sysctl_createv(clog, 0, NULL, NULL, 325 CTLFLAG_PERMANENT, 326 CTLTYPE_STRING, "ostype", 327 SYSCTL_DESCR("Operating system type"), 328 NULL, 0, &ostype, 0, 329 CTL_KERN, KERN_OSTYPE, CTL_EOL); 330 sysctl_createv(clog, 0, NULL, NULL, 331 CTLFLAG_PERMANENT, 332 CTLTYPE_STRING, "osrelease", 333 SYSCTL_DESCR("Operating system release"), 334 NULL, 0, &osrelease, 0, 335 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 336 sysctl_createv(clog, 0, NULL, NULL, 337 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 338 CTLTYPE_INT, "osrevision", 339 SYSCTL_DESCR("Operating system revision"), 340 NULL, __NetBSD_Version__, NULL, 0, 341 CTL_KERN, KERN_OSREV, CTL_EOL); 342 sysctl_createv(clog, 0, NULL, NULL, 343 CTLFLAG_PERMANENT, 344 CTLTYPE_STRING, "version", 345 SYSCTL_DESCR("Kernel version"), 346 NULL, 0, &version, 0, 347 CTL_KERN, KERN_VERSION, CTL_EOL); 348 sysctl_createv(clog, 0, NULL, NULL, 349 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 350 CTLTYPE_INT, "maxvnodes", 351 SYSCTL_DESCR("Maximum number of vnodes"), 352 sysctl_kern_maxvnodes, 0, NULL, 0, 353 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 354 sysctl_createv(clog, 0, NULL, NULL, 355 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 356 CTLTYPE_INT, "maxproc", 357 SYSCTL_DESCR("Maximum number of simultaneous processes"), 358 sysctl_kern_maxproc, 0, NULL, 0, 359 CTL_KERN, KERN_MAXPROC, CTL_EOL); 360 sysctl_createv(clog, 0, NULL, NULL, 361 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 362 CTLTYPE_INT, "maxfiles", 363 SYSCTL_DESCR("Maximum number of open files"), 364 NULL, 0, &maxfiles, 0, 365 CTL_KERN, KERN_MAXFILES, CTL_EOL); 366 sysctl_createv(clog, 0, NULL, NULL, 367 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 368 CTLTYPE_INT, "argmax", 369 SYSCTL_DESCR("Maximum number of bytes of arguments to " 370 "execve(2)"), 371 NULL, ARG_MAX, NULL, 0, 372 CTL_KERN, KERN_ARGMAX, CTL_EOL); 373 sysctl_createv(clog, 0, NULL, NULL, 374 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 375 CTLTYPE_STRING, "hostname", 376 SYSCTL_DESCR("System hostname"), 377 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 378 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 379 sysctl_createv(clog, 0, NULL, NULL, 380 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 381 CTLTYPE_INT, "hostid", 382 SYSCTL_DESCR("System host ID number"), 383 sysctl_kern_hostid, 0, NULL, 0, 384 CTL_KERN, KERN_HOSTID, CTL_EOL); 385 sysctl_createv(clog, 0, NULL, NULL, 386 CTLFLAG_PERMANENT, 387 CTLTYPE_STRUCT, "clockrate", 388 SYSCTL_DESCR("Kernel clock rates"), 389 sysctl_kern_clockrate, 0, NULL, 390 sizeof(struct clockinfo), 391 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 392 sysctl_createv(clog, 0, NULL, NULL, 393 CTLFLAG_PERMANENT, 394 CTLTYPE_INT, "hardclock_ticks", 395 SYSCTL_DESCR("Number of hardclock ticks"), 396 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 397 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 398 sysctl_createv(clog, 0, NULL, NULL, 399 CTLFLAG_PERMANENT, 400 CTLTYPE_STRUCT, "vnode", 401 SYSCTL_DESCR("System vnode table"), 402 sysctl_kern_vnode, 0, NULL, 0, 403 CTL_KERN, KERN_VNODE, CTL_EOL); 404 sysctl_createv(clog, 0, NULL, NULL, 405 CTLFLAG_PERMANENT, 406 CTLTYPE_STRUCT, "file", 407 SYSCTL_DESCR("System open file table"), 408 sysctl_kern_file, 0, NULL, 0, 409 CTL_KERN, KERN_FILE, CTL_EOL); 410 #ifndef GPROF 411 sysctl_createv(clog, 0, NULL, NULL, 412 CTLFLAG_PERMANENT, 413 CTLTYPE_NODE, "profiling", 414 SYSCTL_DESCR("Profiling information (not available)"), 415 sysctl_notavail, 0, NULL, 0, 416 CTL_KERN, KERN_PROF, CTL_EOL); 417 #endif 418 sysctl_createv(clog, 0, NULL, NULL, 419 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 420 CTLTYPE_INT, "posix1version", 421 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 422 "with which the operating system attempts " 423 "to comply"), 424 NULL, _POSIX_VERSION, NULL, 0, 425 CTL_KERN, KERN_POSIX1, CTL_EOL); 426 sysctl_createv(clog, 0, NULL, NULL, 427 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 428 CTLTYPE_INT, "ngroups", 429 SYSCTL_DESCR("Maximum number of supplemental groups"), 430 NULL, NGROUPS_MAX, NULL, 0, 431 CTL_KERN, KERN_NGROUPS, CTL_EOL); 432 sysctl_createv(clog, 0, NULL, NULL, 433 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 434 CTLTYPE_INT, "job_control", 435 SYSCTL_DESCR("Whether job control is available"), 436 NULL, 1, NULL, 0, 437 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 438 sysctl_createv(clog, 0, NULL, NULL, 439 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 440 CTLTYPE_INT, "saved_ids", 441 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 442 "available"), NULL, 443 #ifdef _POSIX_SAVED_IDS 444 1, 445 #else /* _POSIX_SAVED_IDS */ 446 0, 447 #endif /* _POSIX_SAVED_IDS */ 448 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 449 sysctl_createv(clog, 0, NULL, NULL, 450 CTLFLAG_PERMANENT, 451 CTLTYPE_STRUCT, "boottime", 452 SYSCTL_DESCR("System boot time"), 453 NULL, 0, &boottime, sizeof(boottime), 454 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 455 #ifdef COMPAT_50 456 { 457 extern struct timeval50 boottime50; 458 sysctl_createv(clog, 0, NULL, NULL, 459 CTLFLAG_PERMANENT, 460 CTLTYPE_STRUCT, "oboottime", 461 SYSCTL_DESCR("System boot time"), 462 NULL, 0, &boottime50, sizeof(boottime50), 463 CTL_KERN, KERN_OBOOTTIME, CTL_EOL); 464 } 465 #endif 466 sysctl_createv(clog, 0, NULL, NULL, 467 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 468 CTLTYPE_STRING, "domainname", 469 SYSCTL_DESCR("YP domain name"), 470 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 471 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 472 sysctl_createv(clog, 0, NULL, NULL, 473 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 474 CTLTYPE_INT, "maxpartitions", 475 SYSCTL_DESCR("Maximum number of partitions allowed per " 476 "disk"), 477 NULL, MAXPARTITIONS, NULL, 0, 478 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 479 sysctl_createv(clog, 0, NULL, NULL, 480 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 481 CTLTYPE_INT, "rawpartition", 482 SYSCTL_DESCR("Raw partition of a disk"), 483 NULL, RAW_PART, NULL, 0, 484 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 485 sysctl_createv(clog, 0, NULL, NULL, 486 CTLFLAG_PERMANENT, 487 CTLTYPE_STRUCT, "timex", NULL, 488 sysctl_notavail, 0, NULL, 0, 489 CTL_KERN, KERN_TIMEX, CTL_EOL); 490 sysctl_createv(clog, 0, NULL, NULL, 491 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 492 CTLTYPE_INT, "rtc_offset", 493 SYSCTL_DESCR("Offset of real time clock from UTC in " 494 "minutes"), 495 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 496 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 497 sysctl_createv(clog, 0, NULL, NULL, 498 CTLFLAG_PERMANENT, 499 CTLTYPE_STRING, "root_device", 500 SYSCTL_DESCR("Name of the root device"), 501 sysctl_root_device, 0, NULL, 0, 502 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 503 sysctl_createv(clog, 0, NULL, NULL, 504 CTLFLAG_PERMANENT, 505 CTLTYPE_INT, "msgbufsize", 506 SYSCTL_DESCR("Size of the kernel message buffer"), 507 sysctl_msgbuf, 0, NULL, 0, 508 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 509 sysctl_createv(clog, 0, NULL, NULL, 510 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 511 CTLTYPE_INT, "fsync", 512 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 513 "Synchronization Option is available on " 514 "this system"), 515 NULL, 1, NULL, 0, 516 CTL_KERN, KERN_FSYNC, CTL_EOL); 517 sysctl_createv(clog, 0, NULL, NULL, 518 CTLFLAG_PERMANENT, 519 CTLTYPE_NODE, "ipc", 520 SYSCTL_DESCR("SysV IPC options"), 521 NULL, 0, NULL, 0, 522 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 523 sysctl_createv(clog, 0, NULL, NULL, 524 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 525 CTLTYPE_INT, "sysvmsg", 526 SYSCTL_DESCR("System V style message support available"), 527 NULL, 528 #ifdef SYSVMSG 529 1, 530 #else /* SYSVMSG */ 531 0, 532 #endif /* SYSVMSG */ 533 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 534 sysctl_createv(clog, 0, NULL, NULL, 535 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 536 CTLTYPE_INT, "sysvsem", 537 SYSCTL_DESCR("System V style semaphore support " 538 "available"), NULL, 539 #ifdef SYSVSEM 540 1, 541 #else /* SYSVSEM */ 542 0, 543 #endif /* SYSVSEM */ 544 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 545 sysctl_createv(clog, 0, NULL, NULL, 546 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 547 CTLTYPE_INT, "sysvshm", 548 SYSCTL_DESCR("System V style shared memory support " 549 "available"), NULL, 550 #ifdef SYSVSHM 551 1, 552 #else /* SYSVSHM */ 553 0, 554 #endif /* SYSVSHM */ 555 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 556 sysctl_createv(clog, 0, NULL, NULL, 557 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 558 CTLTYPE_INT, "synchronized_io", 559 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 560 "I/O Option is available on this system"), 561 NULL, 1, NULL, 0, 562 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 563 sysctl_createv(clog, 0, NULL, NULL, 564 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 565 CTLTYPE_INT, "iov_max", 566 SYSCTL_DESCR("Maximum number of iovec structures per " 567 "process"), 568 NULL, IOV_MAX, NULL, 0, 569 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 570 sysctl_createv(clog, 0, NULL, NULL, 571 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 572 CTLTYPE_INT, "mapped_files", 573 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 574 "Files Option is available on this system"), 575 NULL, 1, NULL, 0, 576 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 577 sysctl_createv(clog, 0, NULL, NULL, 578 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 579 CTLTYPE_INT, "memlock", 580 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 581 "Locking Option is available on this " 582 "system"), 583 NULL, 1, NULL, 0, 584 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 585 sysctl_createv(clog, 0, NULL, NULL, 586 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 587 CTLTYPE_INT, "memlock_range", 588 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 589 "Locking Option is available on this " 590 "system"), 591 NULL, 1, NULL, 0, 592 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 593 sysctl_createv(clog, 0, NULL, NULL, 594 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 595 CTLTYPE_INT, "memory_protection", 596 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 597 "Protection Option is available on this " 598 "system"), 599 NULL, 1, NULL, 0, 600 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 601 sysctl_createv(clog, 0, NULL, NULL, 602 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 603 CTLTYPE_INT, "login_name_max", 604 SYSCTL_DESCR("Maximum login name length"), 605 NULL, LOGIN_NAME_MAX, NULL, 0, 606 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 607 sysctl_createv(clog, 0, NULL, NULL, 608 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 609 CTLTYPE_STRING, "defcorename", 610 SYSCTL_DESCR("Default core file name"), 611 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 612 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 613 sysctl_createv(clog, 0, NULL, NULL, 614 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 615 CTLTYPE_INT, "logsigexit", 616 SYSCTL_DESCR("Log process exit when caused by signals"), 617 NULL, 0, &kern_logsigexit, 0, 618 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 619 sysctl_createv(clog, 0, NULL, NULL, 620 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 621 CTLTYPE_INT, "fscale", 622 SYSCTL_DESCR("Kernel fixed-point scale factor"), 623 NULL, FSCALE, NULL, 0, 624 CTL_KERN, KERN_FSCALE, CTL_EOL); 625 sysctl_createv(clog, 0, NULL, NULL, 626 CTLFLAG_PERMANENT, 627 CTLTYPE_INT, "ccpu", 628 SYSCTL_DESCR("Scheduler exponential decay value"), 629 NULL, 0, &ccpu, 0, 630 CTL_KERN, KERN_CCPU, CTL_EOL); 631 sysctl_createv(clog, 0, NULL, NULL, 632 CTLFLAG_PERMANENT, 633 CTLTYPE_STRUCT, "cp_time", 634 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 635 sysctl_kern_cptime, 0, NULL, 0, 636 CTL_KERN, KERN_CP_TIME, CTL_EOL); 637 sysctl_createv(clog, 0, NULL, NULL, 638 CTLFLAG_PERMANENT, 639 CTLTYPE_INT, "msgbuf", 640 SYSCTL_DESCR("Kernel message buffer"), 641 sysctl_msgbuf, 0, NULL, 0, 642 CTL_KERN, KERN_MSGBUF, CTL_EOL); 643 sysctl_createv(clog, 0, NULL, NULL, 644 CTLFLAG_PERMANENT, 645 CTLTYPE_STRUCT, "consdev", 646 SYSCTL_DESCR("Console device"), 647 sysctl_consdev, 0, NULL, sizeof(dev_t), 648 CTL_KERN, KERN_CONSDEV, CTL_EOL); 649 #if NPTY > 0 650 sysctl_createv(clog, 0, NULL, NULL, 651 CTLFLAG_PERMANENT, 652 CTLTYPE_INT, "maxptys", 653 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 654 sysctl_kern_maxptys, 0, NULL, 0, 655 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 656 #endif /* NPTY > 0 */ 657 sysctl_createv(clog, 0, NULL, NULL, 658 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 659 CTLTYPE_INT, "maxphys", 660 SYSCTL_DESCR("Maximum raw I/O transfer size"), 661 NULL, MAXPHYS, NULL, 0, 662 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 663 sysctl_createv(clog, 0, NULL, NULL, 664 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 665 CTLTYPE_INT, "sbmax", 666 SYSCTL_DESCR("Maximum socket buffer size"), 667 sysctl_kern_sbmax, 0, NULL, 0, 668 CTL_KERN, KERN_SBMAX, CTL_EOL); 669 sysctl_createv(clog, 0, NULL, NULL, 670 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 671 CTLTYPE_INT, "monotonic_clock", 672 SYSCTL_DESCR("Implementation version of the POSIX " 673 "1003.1b Monotonic Clock Option"), 674 /* XXX _POSIX_VERSION */ 675 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 676 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 677 sysctl_createv(clog, 0, NULL, NULL, 678 CTLFLAG_PERMANENT, 679 CTLTYPE_INT, "urandom", 680 SYSCTL_DESCR("Random integer value"), 681 sysctl_kern_urnd, 0, NULL, 0, 682 CTL_KERN, KERN_URND, CTL_EOL); 683 sysctl_createv(clog, 0, NULL, NULL, 684 CTLFLAG_PERMANENT, 685 CTLTYPE_INT, "arandom", 686 SYSCTL_DESCR("n bytes of random data"), 687 sysctl_kern_arnd, 0, NULL, 0, 688 CTL_KERN, KERN_ARND, CTL_EOL); 689 sysctl_createv(clog, 0, NULL, NULL, 690 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 691 CTLTYPE_INT, "labelsector", 692 SYSCTL_DESCR("Sector number containing the disklabel"), 693 NULL, LABELSECTOR, NULL, 0, 694 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 695 sysctl_createv(clog, 0, NULL, NULL, 696 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 697 CTLTYPE_INT, "labeloffset", 698 SYSCTL_DESCR("Offset of the disklabel within the " 699 "sector"), 700 NULL, LABELOFFSET, NULL, 0, 701 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 702 sysctl_createv(clog, 0, NULL, NULL, 703 CTLFLAG_PERMANENT, 704 CTLTYPE_NODE, "lwp", 705 SYSCTL_DESCR("System-wide LWP information"), 706 sysctl_kern_lwp, 0, NULL, 0, 707 CTL_KERN, KERN_LWP, CTL_EOL); 708 sysctl_createv(clog, 0, NULL, NULL, 709 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 710 CTLTYPE_INT, "forkfsleep", 711 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 712 "to process limits"), 713 sysctl_kern_forkfsleep, 0, NULL, 0, 714 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 715 sysctl_createv(clog, 0, NULL, NULL, 716 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 717 CTLTYPE_INT, "posix_threads", 718 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 719 "Threads option to which the system " 720 "attempts to conform"), 721 /* XXX _POSIX_VERSION */ 722 NULL, _POSIX_THREADS, NULL, 0, 723 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 724 sysctl_createv(clog, 0, NULL, NULL, 725 CTLFLAG_PERMANENT, 726 CTLTYPE_INT, "posix_semaphores", 727 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 728 "Semaphores option to which the system " 729 "attempts to conform"), NULL, 730 0, &posix_semaphores, 731 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 732 sysctl_createv(clog, 0, NULL, NULL, 733 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 734 CTLTYPE_INT, "posix_barriers", 735 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 736 "Barriers option to which the system " 737 "attempts to conform"), 738 /* XXX _POSIX_VERSION */ 739 NULL, _POSIX_BARRIERS, NULL, 0, 740 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 741 sysctl_createv(clog, 0, NULL, NULL, 742 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 743 CTLTYPE_INT, "posix_timers", 744 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 745 "Timers option to which the system " 746 "attempts to conform"), 747 /* XXX _POSIX_VERSION */ 748 NULL, _POSIX_TIMERS, NULL, 0, 749 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 750 sysctl_createv(clog, 0, NULL, NULL, 751 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 752 CTLTYPE_INT, "posix_spin_locks", 753 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 754 "Locks option to which the system attempts " 755 "to conform"), 756 /* XXX _POSIX_VERSION */ 757 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 758 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 759 sysctl_createv(clog, 0, NULL, NULL, 760 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 761 CTLTYPE_INT, "posix_reader_writer_locks", 762 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 763 "Read-Write Locks option to which the " 764 "system attempts to conform"), 765 /* XXX _POSIX_VERSION */ 766 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 767 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 768 sysctl_createv(clog, 0, NULL, NULL, 769 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 770 CTLTYPE_INT, "dump_on_panic", 771 SYSCTL_DESCR("Perform a crash dump on system panic"), 772 NULL, 0, &dumponpanic, 0, 773 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 774 #ifdef DIAGNOSTIC 775 sysctl_createv(clog, 0, NULL, NULL, 776 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 777 CTLTYPE_INT, "panic_now", 778 SYSCTL_DESCR("Trigger a panic"), 779 sysctl_kern_trigger_panic, 0, NULL, 0, 780 CTL_KERN, CTL_CREATE, CTL_EOL); 781 #endif 782 sysctl_createv(clog, 0, NULL, NULL, 783 CTLFLAG_PERMANENT, 784 CTLTYPE_INT, "root_partition", 785 SYSCTL_DESCR("Root partition on the root device"), 786 sysctl_kern_root_partition, 0, NULL, 0, 787 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 788 sysctl_createv(clog, 0, NULL, NULL, 789 CTLFLAG_PERMANENT, 790 CTLTYPE_STRUCT, "drivers", 791 SYSCTL_DESCR("List of all drivers with block and " 792 "character device numbers"), 793 sysctl_kern_drivers, 0, NULL, 0, 794 CTL_KERN, KERN_DRIVERS, CTL_EOL); 795 sysctl_createv(clog, 0, NULL, NULL, 796 CTLFLAG_PERMANENT, 797 CTLTYPE_STRUCT, "file2", 798 SYSCTL_DESCR("System open file table"), 799 sysctl_kern_file2, 0, NULL, 0, 800 CTL_KERN, KERN_FILE2, CTL_EOL); 801 sysctl_createv(clog, 0, NULL, NULL, 802 CTLFLAG_PERMANENT, 803 CTLTYPE_STRUCT, "cp_id", 804 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 805 sysctl_kern_cpid, 0, NULL, 0, 806 CTL_KERN, KERN_CP_ID, CTL_EOL); 807 sysctl_createv(clog, 0, NULL, &rnode, 808 CTLFLAG_PERMANENT, 809 CTLTYPE_NODE, "coredump", 810 SYSCTL_DESCR("Coredump settings."), 811 NULL, 0, NULL, 0, 812 CTL_KERN, CTL_CREATE, CTL_EOL); 813 sysctl_createv(clog, 0, &rnode, &rnode, 814 CTLFLAG_PERMANENT, 815 CTLTYPE_NODE, "setid", 816 SYSCTL_DESCR("Set-id processes' coredump settings."), 817 NULL, 0, NULL, 0, 818 CTL_CREATE, CTL_EOL); 819 sysctl_createv(clog, 0, &rnode, NULL, 820 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 821 CTLTYPE_INT, "dump", 822 SYSCTL_DESCR("Allow set-id processes to dump core."), 823 sysctl_security_setidcore, 0, &security_setidcore_dump, 824 sizeof(security_setidcore_dump), 825 CTL_CREATE, CTL_EOL); 826 sysctl_createv(clog, 0, &rnode, NULL, 827 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 828 CTLTYPE_STRING, "path", 829 SYSCTL_DESCR("Path pattern for set-id coredumps."), 830 sysctl_security_setidcorename, 0, 831 &security_setidcore_path, 832 sizeof(security_setidcore_path), 833 CTL_CREATE, CTL_EOL); 834 sysctl_createv(clog, 0, &rnode, NULL, 835 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 836 CTLTYPE_INT, "owner", 837 SYSCTL_DESCR("Owner id for set-id processes' cores."), 838 sysctl_security_setidcore, 0, &security_setidcore_owner, 839 0, 840 CTL_CREATE, CTL_EOL); 841 sysctl_createv(clog, 0, &rnode, NULL, 842 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 843 CTLTYPE_INT, "group", 844 SYSCTL_DESCR("Group id for set-id processes' cores."), 845 sysctl_security_setidcore, 0, &security_setidcore_group, 846 0, 847 CTL_CREATE, CTL_EOL); 848 sysctl_createv(clog, 0, &rnode, NULL, 849 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 850 CTLTYPE_INT, "mode", 851 SYSCTL_DESCR("Mode for set-id processes' cores."), 852 sysctl_security_setidcore, 0, &security_setidcore_mode, 853 0, 854 CTL_CREATE, CTL_EOL); 855 #ifdef KERN_SA 856 sysctl_createv(clog, 0, NULL, NULL, 857 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 858 CTLTYPE_INT, "no_sa_support", 859 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 860 NULL, 0, &sa_system_disabled, 0, 861 CTL_KERN, CTL_CREATE, CTL_EOL); 862 #else 863 sysctl_createv(clog, 0, NULL, NULL, 864 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 865 CTLTYPE_INT, "no_sa_support", 866 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 867 NULL, 1, NULL, 0, 868 CTL_KERN, CTL_CREATE, CTL_EOL); 869 #endif 870 871 /* kern.posix. */ 872 sysctl_createv(clog, 0, NULL, &rnode, 873 CTLFLAG_PERMANENT, 874 CTLTYPE_NODE, "posix", 875 SYSCTL_DESCR("POSIX options"), 876 NULL, 0, NULL, 0, 877 CTL_KERN, CTL_CREATE, CTL_EOL); 878 sysctl_createv(clog, 0, &rnode, NULL, 879 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 880 CTLTYPE_INT, "semmax", 881 SYSCTL_DESCR("Maximal number of semaphores"), 882 NULL, 0, &ksem_max, 0, 883 CTL_CREATE, CTL_EOL); 884 } 885 886 SYSCTL_SETUP(sysctl_kern_proc_setup, 887 "sysctl kern.proc/proc2/proc_args subtree setup") 888 { 889 890 sysctl_createv(clog, 0, NULL, NULL, 891 CTLFLAG_PERMANENT, 892 CTLTYPE_NODE, "kern", NULL, 893 NULL, 0, NULL, 0, 894 CTL_KERN, CTL_EOL); 895 896 sysctl_createv(clog, 0, NULL, NULL, 897 CTLFLAG_PERMANENT, 898 CTLTYPE_NODE, "proc", 899 SYSCTL_DESCR("System-wide process information"), 900 sysctl_doeproc, 0, NULL, 0, 901 CTL_KERN, KERN_PROC, CTL_EOL); 902 sysctl_createv(clog, 0, NULL, NULL, 903 CTLFLAG_PERMANENT, 904 CTLTYPE_NODE, "proc2", 905 SYSCTL_DESCR("Machine-independent process information"), 906 sysctl_doeproc, 0, NULL, 0, 907 CTL_KERN, KERN_PROC2, CTL_EOL); 908 sysctl_createv(clog, 0, NULL, NULL, 909 CTLFLAG_PERMANENT, 910 CTLTYPE_NODE, "proc_args", 911 SYSCTL_DESCR("Process argument information"), 912 sysctl_kern_proc_args, 0, NULL, 0, 913 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 914 915 /* 916 "nodes" under these: 917 918 KERN_PROC_ALL 919 KERN_PROC_PID pid 920 KERN_PROC_PGRP pgrp 921 KERN_PROC_SESSION sess 922 KERN_PROC_TTY tty 923 KERN_PROC_UID uid 924 KERN_PROC_RUID uid 925 KERN_PROC_GID gid 926 KERN_PROC_RGID gid 927 928 all in all, probably not worth the effort... 929 */ 930 } 931 932 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 933 { 934 u_int u; 935 u_quad_t q; 936 937 sysctl_createv(clog, 0, NULL, NULL, 938 CTLFLAG_PERMANENT, 939 CTLTYPE_NODE, "hw", NULL, 940 NULL, 0, NULL, 0, 941 CTL_HW, CTL_EOL); 942 943 sysctl_createv(clog, 0, NULL, NULL, 944 CTLFLAG_PERMANENT, 945 CTLTYPE_STRING, "machine", 946 SYSCTL_DESCR("Machine class"), 947 NULL, 0, machine, 0, 948 CTL_HW, HW_MACHINE, CTL_EOL); 949 sysctl_createv(clog, 0, NULL, NULL, 950 CTLFLAG_PERMANENT, 951 CTLTYPE_STRING, "model", 952 SYSCTL_DESCR("Machine model"), 953 NULL, 0, cpu_model, 0, 954 CTL_HW, HW_MODEL, CTL_EOL); 955 sysctl_createv(clog, 0, NULL, NULL, 956 CTLFLAG_PERMANENT, 957 CTLTYPE_INT, "ncpu", 958 SYSCTL_DESCR("Number of CPUs configured"), 959 NULL, 0, &ncpu, 0, 960 CTL_HW, HW_NCPU, CTL_EOL); 961 sysctl_createv(clog, 0, NULL, NULL, 962 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 963 CTLTYPE_INT, "byteorder", 964 SYSCTL_DESCR("System byte order"), 965 NULL, BYTE_ORDER, NULL, 0, 966 CTL_HW, HW_BYTEORDER, CTL_EOL); 967 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 968 UINT_MAX : physmem * PAGE_SIZE; 969 sysctl_createv(clog, 0, NULL, NULL, 970 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 971 CTLTYPE_INT, "physmem", 972 SYSCTL_DESCR("Bytes of physical memory"), 973 NULL, u, NULL, 0, 974 CTL_HW, HW_PHYSMEM, CTL_EOL); 975 sysctl_createv(clog, 0, NULL, NULL, 976 CTLFLAG_PERMANENT, 977 CTLTYPE_INT, "usermem", 978 SYSCTL_DESCR("Bytes of non-kernel memory"), 979 sysctl_hw_usermem, 0, NULL, 0, 980 CTL_HW, HW_USERMEM, CTL_EOL); 981 sysctl_createv(clog, 0, NULL, NULL, 982 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 983 CTLTYPE_INT, "pagesize", 984 SYSCTL_DESCR("Software page size"), 985 NULL, PAGE_SIZE, NULL, 0, 986 CTL_HW, HW_PAGESIZE, CTL_EOL); 987 sysctl_createv(clog, 0, NULL, NULL, 988 CTLFLAG_PERMANENT, 989 CTLTYPE_STRING, "machine_arch", 990 SYSCTL_DESCR("Machine CPU class"), 991 NULL, 0, machine_arch, 0, 992 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 993 sysctl_createv(clog, 0, NULL, NULL, 994 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 995 CTLTYPE_INT, "alignbytes", 996 SYSCTL_DESCR("Alignment constraint for all possible " 997 "data types"), 998 NULL, ALIGNBYTES, NULL, 0, 999 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 1000 sysctl_createv(clog, 0, NULL, NULL, 1001 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 1002 CTLTYPE_STRING, "cnmagic", 1003 SYSCTL_DESCR("Console magic key sequence"), 1004 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 1005 CTL_HW, HW_CNMAGIC, CTL_EOL); 1006 q = (u_quad_t)physmem * PAGE_SIZE; 1007 sysctl_createv(clog, 0, NULL, NULL, 1008 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 1009 CTLTYPE_QUAD, "physmem64", 1010 SYSCTL_DESCR("Bytes of physical memory"), 1011 NULL, q, NULL, 0, 1012 CTL_HW, HW_PHYSMEM64, CTL_EOL); 1013 sysctl_createv(clog, 0, NULL, NULL, 1014 CTLFLAG_PERMANENT, 1015 CTLTYPE_QUAD, "usermem64", 1016 SYSCTL_DESCR("Bytes of non-kernel memory"), 1017 sysctl_hw_usermem, 0, NULL, 0, 1018 CTL_HW, HW_USERMEM64, CTL_EOL); 1019 sysctl_createv(clog, 0, NULL, NULL, 1020 CTLFLAG_PERMANENT, 1021 CTLTYPE_INT, "ncpuonline", 1022 SYSCTL_DESCR("Number of CPUs online"), 1023 NULL, 0, &ncpuonline, 0, 1024 CTL_HW, HW_NCPUONLINE, CTL_EOL); 1025 } 1026 1027 #ifdef DEBUG 1028 /* 1029 * Debugging related system variables. 1030 */ 1031 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 1032 struct ctldebug debug5, debug6, debug7, debug8, debug9; 1033 struct ctldebug debug10, debug11, debug12, debug13, debug14; 1034 struct ctldebug debug15, debug16, debug17, debug18, debug19; 1035 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 1036 &debug0, &debug1, &debug2, &debug3, &debug4, 1037 &debug5, &debug6, &debug7, &debug8, &debug9, 1038 &debug10, &debug11, &debug12, &debug13, &debug14, 1039 &debug15, &debug16, &debug17, &debug18, &debug19, 1040 }; 1041 1042 /* 1043 * this setup routine is a replacement for debug_sysctl() 1044 * 1045 * note that it creates several nodes per defined debug variable 1046 */ 1047 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 1048 { 1049 struct ctldebug *cdp; 1050 char nodename[20]; 1051 int i; 1052 1053 /* 1054 * two ways here: 1055 * 1056 * the "old" way (debug.name -> value) which was emulated by 1057 * the sysctl(8) binary 1058 * 1059 * the new way, which the sysctl(8) binary was actually using 1060 1061 node debug 1062 node debug.0 1063 string debug.0.name 1064 int debug.0.value 1065 int debug.name 1066 1067 */ 1068 1069 sysctl_createv(clog, 0, NULL, NULL, 1070 CTLFLAG_PERMANENT, 1071 CTLTYPE_NODE, "debug", NULL, 1072 NULL, 0, NULL, 0, 1073 CTL_DEBUG, CTL_EOL); 1074 1075 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 1076 cdp = debugvars[i]; 1077 if (cdp->debugname == NULL || cdp->debugvar == NULL) 1078 continue; 1079 1080 snprintf(nodename, sizeof(nodename), "debug%d", i); 1081 sysctl_createv(clog, 0, NULL, NULL, 1082 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1083 CTLTYPE_NODE, nodename, NULL, 1084 NULL, 0, NULL, 0, 1085 CTL_DEBUG, i, CTL_EOL); 1086 sysctl_createv(clog, 0, NULL, NULL, 1087 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1088 CTLTYPE_STRING, "name", NULL, 1089 /*XXXUNCONST*/ 1090 NULL, 0, __UNCONST(cdp->debugname), 0, 1091 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 1092 sysctl_createv(clog, 0, NULL, NULL, 1093 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1094 CTLTYPE_INT, "value", NULL, 1095 NULL, 0, cdp->debugvar, 0, 1096 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 1097 sysctl_createv(clog, 0, NULL, NULL, 1098 CTLFLAG_PERMANENT, 1099 CTLTYPE_INT, cdp->debugname, NULL, 1100 NULL, 0, cdp->debugvar, 0, 1101 CTL_DEBUG, CTL_CREATE, CTL_EOL); 1102 } 1103 } 1104 #endif /* DEBUG */ 1105 1106 /* 1107 * ******************************************************************** 1108 * section 2: private node-specific helper routines. 1109 * ******************************************************************** 1110 */ 1111 1112 #ifdef DIAGNOSTIC 1113 static int 1114 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 1115 { 1116 int newtrig, error; 1117 struct sysctlnode node; 1118 1119 newtrig = 0; 1120 node = *rnode; 1121 node.sysctl_data = &newtrig; 1122 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1123 if (error || newp == NULL) 1124 return (error); 1125 1126 if (newtrig != 0) 1127 panic("Panic triggered"); 1128 1129 return (error); 1130 } 1131 #endif 1132 1133 /* 1134 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 1135 * new value is lower than desiredvnodes and then calls reinit 1136 * routines that needs to adjust to the new value. 1137 */ 1138 static int 1139 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 1140 { 1141 int error, new_vnodes, old_vnodes, new_max; 1142 struct sysctlnode node; 1143 1144 new_vnodes = desiredvnodes; 1145 node = *rnode; 1146 node.sysctl_data = &new_vnodes; 1147 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1148 if (error || newp == NULL) 1149 return (error); 1150 1151 /* Limits: 75% of KVA and physical memory. */ 1152 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 1153 if (new_vnodes > new_max) 1154 new_vnodes = new_max; 1155 1156 old_vnodes = desiredvnodes; 1157 desiredvnodes = new_vnodes; 1158 if (new_vnodes < old_vnodes) { 1159 error = vfs_drainvnodes(new_vnodes, l); 1160 if (error) { 1161 desiredvnodes = old_vnodes; 1162 return (error); 1163 } 1164 } 1165 vfs_reinit(); 1166 nchreinit(); 1167 1168 return (0); 1169 } 1170 1171 /* 1172 * sysctl helper routine for rtc_offset - set time after changes 1173 */ 1174 static int 1175 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1176 { 1177 struct timespec ts, delta; 1178 int error, new_rtc_offset; 1179 struct sysctlnode node; 1180 1181 new_rtc_offset = rtc_offset; 1182 node = *rnode; 1183 node.sysctl_data = &new_rtc_offset; 1184 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1185 if (error || newp == NULL) 1186 return (error); 1187 1188 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1189 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1190 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1191 return (EPERM); 1192 if (rtc_offset == new_rtc_offset) 1193 return (0); 1194 1195 /* if we change the offset, adjust the time */ 1196 nanotime(&ts); 1197 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1198 delta.tv_nsec = 0; 1199 timespecadd(&ts, &delta, &ts); 1200 rtc_offset = new_rtc_offset; 1201 return (settime(l->l_proc, &ts)); 1202 } 1203 1204 /* 1205 * sysctl helper routine for kern.maxproc. Ensures that the new 1206 * values are not too low or too high. 1207 */ 1208 static int 1209 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1210 { 1211 int error, nmaxproc; 1212 struct sysctlnode node; 1213 1214 nmaxproc = maxproc; 1215 node = *rnode; 1216 node.sysctl_data = &nmaxproc; 1217 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1218 if (error || newp == NULL) 1219 return (error); 1220 1221 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1222 return (EINVAL); 1223 #ifdef __HAVE_CPU_MAXPROC 1224 if (nmaxproc > cpu_maxproc()) 1225 return (EINVAL); 1226 #endif 1227 maxproc = nmaxproc; 1228 1229 return (0); 1230 } 1231 1232 /* 1233 * sysctl helper function for kern.hostid. The hostid is a long, but 1234 * we export it as an int, so we need to give it a little help. 1235 */ 1236 static int 1237 sysctl_kern_hostid(SYSCTLFN_ARGS) 1238 { 1239 int error, inthostid; 1240 struct sysctlnode node; 1241 1242 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1243 node = *rnode; 1244 node.sysctl_data = &inthostid; 1245 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1246 if (error || newp == NULL) 1247 return (error); 1248 1249 hostid = (unsigned)inthostid; 1250 1251 return (0); 1252 } 1253 1254 /* 1255 * sysctl helper function for kern.hostname and kern.domainnname. 1256 * resets the relevant recorded length when the underlying name is 1257 * changed. 1258 */ 1259 static int 1260 sysctl_setlen(SYSCTLFN_ARGS) 1261 { 1262 int error; 1263 1264 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1265 if (error || newp == NULL) 1266 return (error); 1267 1268 switch (rnode->sysctl_num) { 1269 case KERN_HOSTNAME: 1270 hostnamelen = strlen((const char*)rnode->sysctl_data); 1271 break; 1272 case KERN_DOMAINNAME: 1273 domainnamelen = strlen((const char*)rnode->sysctl_data); 1274 break; 1275 } 1276 1277 return (0); 1278 } 1279 1280 /* 1281 * sysctl helper routine for kern.clockrate. Assembles a struct on 1282 * the fly to be returned to the caller. 1283 */ 1284 static int 1285 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1286 { 1287 struct clockinfo clkinfo; 1288 struct sysctlnode node; 1289 1290 clkinfo.tick = tick; 1291 clkinfo.tickadj = tickadj; 1292 clkinfo.hz = hz; 1293 clkinfo.profhz = profhz; 1294 clkinfo.stathz = stathz ? stathz : hz; 1295 1296 node = *rnode; 1297 node.sysctl_data = &clkinfo; 1298 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1299 } 1300 1301 1302 /* 1303 * sysctl helper routine for kern.file pseudo-subtree. 1304 */ 1305 static int 1306 sysctl_kern_file(SYSCTLFN_ARGS) 1307 { 1308 int error; 1309 size_t buflen; 1310 struct file *fp, *dp, *np, fbuf; 1311 char *start, *where; 1312 1313 start = where = oldp; 1314 buflen = *oldlenp; 1315 dp = NULL; 1316 1317 if (where == NULL) { 1318 /* 1319 * overestimate by 10 files 1320 */ 1321 *oldlenp = sizeof(filehead) + (nfiles + 10) * 1322 sizeof(struct file); 1323 return (0); 1324 } 1325 1326 /* 1327 * first dcopyout filehead 1328 */ 1329 if (buflen < sizeof(filehead)) { 1330 *oldlenp = 0; 1331 return (0); 1332 } 1333 sysctl_unlock(); 1334 error = dcopyout(l, &filehead, where, sizeof(filehead)); 1335 if (error) { 1336 sysctl_relock(); 1337 return error; 1338 } 1339 buflen -= sizeof(filehead); 1340 where += sizeof(filehead); 1341 1342 /* 1343 * allocate dummy file descriptor to make position in list 1344 */ 1345 if ((dp = fgetdummy()) == NULL) { 1346 sysctl_relock(); 1347 return ENOMEM; 1348 } 1349 1350 /* 1351 * followed by an array of file structures 1352 */ 1353 mutex_enter(&filelist_lock); 1354 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1355 np = LIST_NEXT(fp, f_list); 1356 mutex_enter(&fp->f_lock); 1357 if (fp->f_count == 0) { 1358 mutex_exit(&fp->f_lock); 1359 continue; 1360 } 1361 /* 1362 * XXX Need to prevent that from being an alternative way 1363 * XXX to getting process information. 1364 */ 1365 if (kauth_authorize_generic(l->l_cred, 1366 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 1367 mutex_exit(&fp->f_lock); 1368 continue; 1369 } 1370 if (buflen < sizeof(struct file)) { 1371 *oldlenp = where - start; 1372 mutex_exit(&fp->f_lock); 1373 error = ENOMEM; 1374 break; 1375 } 1376 memcpy(&fbuf, fp, sizeof(fbuf)); 1377 LIST_INSERT_AFTER(fp, dp, f_list); 1378 mutex_exit(&fp->f_lock); 1379 mutex_exit(&filelist_lock); 1380 error = dcopyout(l, &fbuf, where, sizeof(fbuf)); 1381 if (error) { 1382 mutex_enter(&filelist_lock); 1383 LIST_REMOVE(dp, f_list); 1384 break; 1385 } 1386 buflen -= sizeof(struct file); 1387 where += sizeof(struct file); 1388 mutex_enter(&filelist_lock); 1389 np = LIST_NEXT(dp, f_list); 1390 LIST_REMOVE(dp, f_list); 1391 } 1392 mutex_exit(&filelist_lock); 1393 *oldlenp = where - start; 1394 if (dp != NULL) 1395 fputdummy(dp); 1396 sysctl_relock(); 1397 return (error); 1398 } 1399 1400 /* 1401 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1402 * former it merely checks the message buffer is set up. For the latter, 1403 * it also copies out the data if necessary. 1404 */ 1405 static int 1406 sysctl_msgbuf(SYSCTLFN_ARGS) 1407 { 1408 char *where = oldp; 1409 size_t len, maxlen; 1410 long beg, end; 1411 extern kmutex_t log_lock; 1412 int error; 1413 1414 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1415 msgbufenabled = 0; 1416 return (ENXIO); 1417 } 1418 1419 switch (rnode->sysctl_num) { 1420 case KERN_MSGBUFSIZE: { 1421 struct sysctlnode node = *rnode; 1422 int msg_bufs = (int)msgbufp->msg_bufs; 1423 node.sysctl_data = &msg_bufs; 1424 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1425 } 1426 case KERN_MSGBUF: 1427 break; 1428 default: 1429 return (EOPNOTSUPP); 1430 } 1431 1432 if (newp != NULL) 1433 return (EPERM); 1434 1435 if (oldp == NULL) { 1436 /* always return full buffer size */ 1437 *oldlenp = msgbufp->msg_bufs; 1438 return (0); 1439 } 1440 1441 sysctl_unlock(); 1442 1443 /* 1444 * First, copy from the write pointer to the end of 1445 * message buffer. 1446 */ 1447 error = 0; 1448 mutex_spin_enter(&log_lock); 1449 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1450 beg = msgbufp->msg_bufx; 1451 end = msgbufp->msg_bufs; 1452 mutex_spin_exit(&log_lock); 1453 1454 while (maxlen > 0) { 1455 len = MIN(end - beg, maxlen); 1456 if (len == 0) 1457 break; 1458 /* XXX unlocked, but hardly matters. */ 1459 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1460 if (error) 1461 break; 1462 where += len; 1463 maxlen -= len; 1464 1465 /* 1466 * ... then, copy from the beginning of message buffer to 1467 * the write pointer. 1468 */ 1469 beg = 0; 1470 end = msgbufp->msg_bufx; 1471 } 1472 1473 sysctl_relock(); 1474 return (error); 1475 } 1476 1477 /* 1478 * sysctl helper routine for kern.defcorename. In the case of a new 1479 * string being assigned, check that it's not a zero-length string. 1480 * (XXX the check in -current doesn't work, but do we really care?) 1481 */ 1482 static int 1483 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1484 { 1485 int error; 1486 char *newcorename; 1487 struct sysctlnode node; 1488 1489 newcorename = PNBUF_GET(); 1490 node = *rnode; 1491 node.sysctl_data = &newcorename[0]; 1492 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1493 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1494 if (error || newp == NULL) { 1495 goto done; 1496 } 1497 1498 /* 1499 * when sysctl_lookup() deals with a string, it's guaranteed 1500 * to come back nul terminated. So there. :) 1501 */ 1502 if (strlen(newcorename) == 0) { 1503 error = EINVAL; 1504 } else { 1505 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1506 error = 0; 1507 } 1508 done: 1509 PNBUF_PUT(newcorename); 1510 return error; 1511 } 1512 1513 /* 1514 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1515 * across all cpus. 1516 */ 1517 static int 1518 sysctl_kern_cptime(SYSCTLFN_ARGS) 1519 { 1520 struct sysctlnode node = *rnode; 1521 uint64_t *cp_time = NULL; 1522 int error, n = ncpu, i; 1523 struct cpu_info *ci; 1524 CPU_INFO_ITERATOR cii; 1525 1526 /* 1527 * if you specifically pass a buffer that is the size of the 1528 * sum, or if you are probing for the size, you get the "sum" 1529 * of cp_time (and the size thereof) across all processors. 1530 * 1531 * alternately, you can pass an additional mib number and get 1532 * cp_time for that particular processor. 1533 */ 1534 switch (namelen) { 1535 case 0: 1536 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1537 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1538 n = -1; /* SUM */ 1539 } 1540 else { 1541 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1542 n = -2; /* ALL */ 1543 } 1544 break; 1545 case 1: 1546 if (name[0] < 0 || name[0] >= n) 1547 return (ENOENT); /* ENOSUCHPROCESSOR */ 1548 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1549 n = name[0]; 1550 /* 1551 * adjust these so that sysctl_lookup() will be happy 1552 */ 1553 name++; 1554 namelen--; 1555 break; 1556 default: 1557 return (EINVAL); 1558 } 1559 1560 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1561 if (cp_time == NULL) 1562 return (ENOMEM); 1563 node.sysctl_data = cp_time; 1564 memset(cp_time, 0, node.sysctl_size); 1565 1566 for (CPU_INFO_FOREACH(cii, ci)) { 1567 if (n <= 0) { 1568 for (i = 0; i < CPUSTATES; i++) { 1569 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1570 } 1571 } 1572 /* 1573 * if a specific processor was requested and we just 1574 * did it, we're done here 1575 */ 1576 if (n == 0) 1577 break; 1578 /* 1579 * if doing "all", skip to next cp_time set for next processor 1580 */ 1581 if (n == -2) 1582 cp_time += CPUSTATES; 1583 /* 1584 * if we're doing a specific processor, we're one 1585 * processor closer 1586 */ 1587 if (n > 0) 1588 n--; 1589 } 1590 1591 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1592 kmem_free(node.sysctl_data, node.sysctl_size); 1593 return (error); 1594 } 1595 1596 #if NPTY > 0 1597 /* 1598 * sysctl helper routine for kern.maxptys. Ensures that any new value 1599 * is acceptable to the pty subsystem. 1600 */ 1601 static int 1602 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1603 { 1604 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1605 int error, xmax; 1606 struct sysctlnode node; 1607 1608 /* get current value of maxptys */ 1609 xmax = pty_maxptys(0, 0); 1610 1611 node = *rnode; 1612 node.sysctl_data = &xmax; 1613 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1614 if (error || newp == NULL) 1615 return (error); 1616 1617 if (xmax != pty_maxptys(xmax, 1)) 1618 return (EINVAL); 1619 1620 return (0); 1621 } 1622 #endif /* NPTY > 0 */ 1623 1624 /* 1625 * sysctl helper routine for kern.sbmax. Basically just ensures that 1626 * any new value is not too small. 1627 */ 1628 static int 1629 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1630 { 1631 int error, new_sbmax; 1632 struct sysctlnode node; 1633 1634 new_sbmax = sb_max; 1635 node = *rnode; 1636 node.sysctl_data = &new_sbmax; 1637 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1638 if (error || newp == NULL) 1639 return (error); 1640 1641 KERNEL_LOCK(1, NULL); 1642 error = sb_max_set(new_sbmax); 1643 KERNEL_UNLOCK_ONE(NULL); 1644 1645 return (error); 1646 } 1647 1648 /* 1649 * sysctl helper routine for kern.urandom node. Picks a random number 1650 * for you. 1651 */ 1652 static int 1653 sysctl_kern_urnd(SYSCTLFN_ARGS) 1654 { 1655 #if NRND > 0 1656 int v, rv; 1657 1658 KERNEL_LOCK(1, NULL); 1659 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1660 KERNEL_UNLOCK_ONE(NULL); 1661 if (rv == sizeof(v)) { 1662 struct sysctlnode node = *rnode; 1663 node.sysctl_data = &v; 1664 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1665 } 1666 else 1667 return (EIO); /*XXX*/ 1668 #else 1669 return (EOPNOTSUPP); 1670 #endif 1671 } 1672 1673 /* 1674 * sysctl helper routine for kern.arandom node. Picks a random number 1675 * for you. 1676 */ 1677 static int 1678 sysctl_kern_arnd(SYSCTLFN_ARGS) 1679 { 1680 #if NRND > 0 1681 int error; 1682 void *v; 1683 struct sysctlnode node = *rnode; 1684 1685 if (*oldlenp == 0) 1686 return 0; 1687 if (*oldlenp > 8192) 1688 return E2BIG; 1689 1690 v = kmem_alloc(*oldlenp, KM_SLEEP); 1691 arc4randbytes(v, *oldlenp); 1692 node.sysctl_data = v; 1693 node.sysctl_size = *oldlenp; 1694 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1695 kmem_free(v, *oldlenp); 1696 return error; 1697 #else 1698 return (EOPNOTSUPP); 1699 #endif 1700 } 1701 /* 1702 * sysctl helper routine to do kern.lwp.* work. 1703 */ 1704 static int 1705 sysctl_kern_lwp(SYSCTLFN_ARGS) 1706 { 1707 struct kinfo_lwp klwp; 1708 struct proc *p; 1709 struct lwp *l2, *l3; 1710 char *where, *dp; 1711 int pid, elem_size, elem_count; 1712 int buflen, needed, error; 1713 bool gotit; 1714 1715 if (namelen == 1 && name[0] == CTL_QUERY) 1716 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1717 1718 dp = where = oldp; 1719 buflen = where != NULL ? *oldlenp : 0; 1720 error = needed = 0; 1721 1722 if (newp != NULL || namelen != 3) 1723 return (EINVAL); 1724 pid = name[0]; 1725 elem_size = name[1]; 1726 elem_count = name[2]; 1727 1728 sysctl_unlock(); 1729 if (pid == -1) { 1730 mutex_enter(proc_lock); 1731 LIST_FOREACH(p, &allproc, p_list) { 1732 /* Grab a hold on the process. */ 1733 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1734 continue; 1735 } 1736 mutex_exit(proc_lock); 1737 1738 mutex_enter(p->p_lock); 1739 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1740 if (buflen >= elem_size && elem_count > 0) { 1741 lwp_lock(l2); 1742 fill_lwp(l2, &klwp); 1743 lwp_unlock(l2); 1744 mutex_exit(p->p_lock); 1745 1746 /* 1747 * Copy out elem_size, but not 1748 * larger than the size of a 1749 * struct kinfo_proc2. 1750 */ 1751 error = dcopyout(l, &klwp, dp, 1752 min(sizeof(klwp), elem_size)); 1753 if (error) { 1754 rw_exit(&p->p_reflock); 1755 goto cleanup; 1756 } 1757 mutex_enter(p->p_lock); 1758 LIST_FOREACH(l3, &p->p_lwps, 1759 l_sibling) { 1760 if (l2 == l3) 1761 break; 1762 } 1763 if (l3 == NULL) { 1764 mutex_exit(p->p_lock); 1765 rw_exit(&p->p_reflock); 1766 error = EAGAIN; 1767 goto cleanup; 1768 } 1769 dp += elem_size; 1770 buflen -= elem_size; 1771 elem_count--; 1772 } 1773 needed += elem_size; 1774 } 1775 mutex_exit(p->p_lock); 1776 1777 /* Drop reference to process. */ 1778 mutex_enter(proc_lock); 1779 rw_exit(&p->p_reflock); 1780 } 1781 mutex_exit(proc_lock); 1782 } else { 1783 mutex_enter(proc_lock); 1784 p = p_find(pid, PFIND_LOCKED); 1785 if (p == NULL) { 1786 error = ESRCH; 1787 mutex_exit(proc_lock); 1788 goto cleanup; 1789 } 1790 /* Grab a hold on the process. */ 1791 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1792 mutex_exit(proc_lock); 1793 if (!gotit) { 1794 error = ESRCH; 1795 goto cleanup; 1796 } 1797 1798 mutex_enter(p->p_lock); 1799 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1800 if (buflen >= elem_size && elem_count > 0) { 1801 lwp_lock(l2); 1802 fill_lwp(l2, &klwp); 1803 lwp_unlock(l2); 1804 mutex_exit(p->p_lock); 1805 /* 1806 * Copy out elem_size, but not larger than 1807 * the size of a struct kinfo_proc2. 1808 */ 1809 error = dcopyout(l, &klwp, dp, 1810 min(sizeof(klwp), elem_size)); 1811 if (error) { 1812 rw_exit(&p->p_reflock); 1813 goto cleanup; 1814 } 1815 mutex_enter(p->p_lock); 1816 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1817 if (l2 == l3) 1818 break; 1819 } 1820 if (l3 == NULL) { 1821 mutex_exit(p->p_lock); 1822 rw_exit(&p->p_reflock); 1823 error = EAGAIN; 1824 goto cleanup; 1825 } 1826 dp += elem_size; 1827 buflen -= elem_size; 1828 elem_count--; 1829 } 1830 needed += elem_size; 1831 } 1832 mutex_exit(p->p_lock); 1833 1834 /* Drop reference to process. */ 1835 rw_exit(&p->p_reflock); 1836 } 1837 1838 if (where != NULL) { 1839 *oldlenp = dp - where; 1840 if (needed > *oldlenp) { 1841 sysctl_relock(); 1842 return (ENOMEM); 1843 } 1844 } else { 1845 needed += KERN_LWPSLOP; 1846 *oldlenp = needed; 1847 } 1848 error = 0; 1849 cleanup: 1850 sysctl_relock(); 1851 return (error); 1852 } 1853 1854 /* 1855 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1856 * given value is not too large or two small, and is at least one 1857 * timer tick if not zero. 1858 */ 1859 static int 1860 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1861 { 1862 /* userland sees value in ms, internally is in ticks */ 1863 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1864 int error, timo, lsleep; 1865 struct sysctlnode node; 1866 1867 lsleep = forkfsleep * 1000 / hz; 1868 node = *rnode; 1869 node.sysctl_data = &lsleep; 1870 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1871 if (error || newp == NULL) 1872 return (error); 1873 1874 /* refuse negative values, and overly 'long time' */ 1875 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1876 return (EINVAL); 1877 1878 timo = mstohz(lsleep); 1879 1880 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1881 if (lsleep != 0 && timo == 0) 1882 forkfsleep = 1; 1883 else 1884 forkfsleep = timo; 1885 1886 return (0); 1887 } 1888 1889 /* 1890 * sysctl helper routine for kern.root_partition 1891 */ 1892 static int 1893 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1894 { 1895 int rootpart = DISKPART(rootdev); 1896 struct sysctlnode node = *rnode; 1897 1898 node.sysctl_data = &rootpart; 1899 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1900 } 1901 1902 /* 1903 * sysctl helper function for kern.drivers 1904 */ 1905 static int 1906 sysctl_kern_drivers(SYSCTLFN_ARGS) 1907 { 1908 int error; 1909 size_t buflen; 1910 struct kinfo_drivers kd; 1911 char *start, *where; 1912 const char *dname; 1913 int i; 1914 extern struct devsw_conv *devsw_conv; 1915 extern int max_devsw_convs; 1916 1917 if (newp != NULL || namelen != 0) 1918 return (EINVAL); 1919 1920 start = where = oldp; 1921 buflen = *oldlenp; 1922 if (where == NULL) { 1923 *oldlenp = max_devsw_convs * sizeof kd; 1924 return 0; 1925 } 1926 1927 /* 1928 * An array of kinfo_drivers structures 1929 */ 1930 error = 0; 1931 sysctl_unlock(); 1932 mutex_enter(&specfs_lock); 1933 for (i = 0; i < max_devsw_convs; i++) { 1934 dname = devsw_conv[i].d_name; 1935 if (dname == NULL) 1936 continue; 1937 if (buflen < sizeof kd) { 1938 error = ENOMEM; 1939 break; 1940 } 1941 memset(&kd, 0, sizeof(kd)); 1942 kd.d_bmajor = devsw_conv[i].d_bmajor; 1943 kd.d_cmajor = devsw_conv[i].d_cmajor; 1944 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1945 mutex_exit(&specfs_lock); 1946 error = dcopyout(l, &kd, where, sizeof kd); 1947 mutex_enter(&specfs_lock); 1948 if (error != 0) 1949 break; 1950 buflen -= sizeof kd; 1951 where += sizeof kd; 1952 } 1953 mutex_exit(&specfs_lock); 1954 sysctl_relock(); 1955 *oldlenp = where - start; 1956 return error; 1957 } 1958 1959 /* 1960 * sysctl helper function for kern.file2 1961 */ 1962 static int 1963 sysctl_kern_file2(SYSCTLFN_ARGS) 1964 { 1965 struct proc *p; 1966 struct file *fp, *tp, *np; 1967 struct filedesc *fd; 1968 struct kinfo_file kf; 1969 char *dp; 1970 u_int i, op; 1971 size_t len, needed, elem_size, out_size; 1972 int error, arg, elem_count; 1973 fdfile_t *ff; 1974 1975 if (namelen == 1 && name[0] == CTL_QUERY) 1976 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1977 1978 if (namelen != 4) 1979 return (EINVAL); 1980 1981 error = 0; 1982 dp = oldp; 1983 len = (oldp != NULL) ? *oldlenp : 0; 1984 op = name[0]; 1985 arg = name[1]; 1986 elem_size = name[2]; 1987 elem_count = name[3]; 1988 out_size = MIN(sizeof(kf), elem_size); 1989 needed = 0; 1990 1991 if (elem_size < 1 || elem_count < 0) 1992 return (EINVAL); 1993 1994 switch (op) { 1995 case KERN_FILE_BYFILE: 1996 /* 1997 * doesn't use arg so it must be zero 1998 */ 1999 if (arg != 0) 2000 return (EINVAL); 2001 sysctl_unlock(); 2002 /* 2003 * allocate dummy file descriptor to make position in list 2004 */ 2005 if ((tp = fgetdummy()) == NULL) { 2006 sysctl_relock(); 2007 return ENOMEM; 2008 } 2009 mutex_enter(&filelist_lock); 2010 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 2011 np = LIST_NEXT(fp, f_list); 2012 mutex_enter(&fp->f_lock); 2013 if (fp->f_count == 0) { 2014 mutex_exit(&fp->f_lock); 2015 continue; 2016 } 2017 /* 2018 * XXX Need to prevent that from being an alternative 2019 * XXX way for getting process information. 2020 */ 2021 if (kauth_authorize_generic(l->l_cred, 2022 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 2023 mutex_exit(&fp->f_lock); 2024 continue; 2025 } 2026 if (len >= elem_size && elem_count > 0) { 2027 fill_file(&kf, fp, NULL, 0, 0); 2028 LIST_INSERT_AFTER(fp, tp, f_list); 2029 mutex_exit(&fp->f_lock); 2030 mutex_exit(&filelist_lock); 2031 error = dcopyout(l, &kf, dp, out_size); 2032 mutex_enter(&filelist_lock); 2033 np = LIST_NEXT(tp, f_list); 2034 LIST_REMOVE(tp, f_list); 2035 if (error) { 2036 break; 2037 } 2038 dp += elem_size; 2039 len -= elem_size; 2040 } else { 2041 mutex_exit(&fp->f_lock); 2042 } 2043 if (elem_count > 0) { 2044 needed += elem_size; 2045 if (elem_count != INT_MAX) 2046 elem_count--; 2047 } 2048 } 2049 mutex_exit(&filelist_lock); 2050 fputdummy(tp); 2051 sysctl_relock(); 2052 break; 2053 case KERN_FILE_BYPID: 2054 if (arg < -1) 2055 /* -1 means all processes */ 2056 return (EINVAL); 2057 sysctl_unlock(); 2058 mutex_enter(proc_lock); 2059 LIST_FOREACH(p, &allproc, p_list) { 2060 if (p->p_stat == SIDL) { 2061 /* skip embryonic processes */ 2062 continue; 2063 } 2064 if (arg > 0 && p->p_pid != arg) { 2065 /* pick only the one we want */ 2066 /* XXX want 0 to mean "kernel files" */ 2067 continue; 2068 } 2069 mutex_enter(p->p_lock); 2070 error = kauth_authorize_process(l->l_cred, 2071 KAUTH_PROCESS_CANSEE, p, 2072 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_OPENFILES), 2073 NULL, NULL); 2074 mutex_exit(p->p_lock); 2075 if (error != 0) { 2076 /* 2077 * Don't leak kauth retval if we're silently 2078 * skipping this entry. 2079 */ 2080 error = 0; 2081 continue; 2082 } 2083 2084 /* 2085 * Grab a hold on the process. 2086 */ 2087 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 2088 continue; 2089 } 2090 mutex_exit(proc_lock); 2091 2092 /* XXX Do we need to check permission per file? */ 2093 fd = p->p_fd; 2094 mutex_enter(&fd->fd_lock); 2095 for (i = 0; i < fd->fd_nfiles; i++) { 2096 if ((ff = fd->fd_ofiles[i]) == NULL) { 2097 continue; 2098 } 2099 mutex_enter(&ff->ff_lock); 2100 if ((fp = ff->ff_file) == NULL) { 2101 mutex_exit(&ff->ff_lock); 2102 continue; 2103 } 2104 if (len >= elem_size && elem_count > 0) { 2105 mutex_enter(&fp->f_lock); 2106 fill_file(&kf, fp, ff, i, p->p_pid); 2107 mutex_exit(&fp->f_lock); 2108 mutex_exit(&ff->ff_lock); 2109 mutex_exit(&fd->fd_lock); 2110 error = dcopyout(l, &kf, dp, out_size); 2111 mutex_enter(&fd->fd_lock); 2112 if (error) 2113 break; 2114 dp += elem_size; 2115 len -= elem_size; 2116 } else { 2117 mutex_exit(&ff->ff_lock); 2118 } 2119 if (elem_count > 0) { 2120 needed += elem_size; 2121 if (elem_count != INT_MAX) 2122 elem_count--; 2123 } 2124 } 2125 mutex_exit(&fd->fd_lock); 2126 2127 /* 2128 * Release reference to process. 2129 */ 2130 mutex_enter(proc_lock); 2131 rw_exit(&p->p_reflock); 2132 } 2133 mutex_exit(proc_lock); 2134 sysctl_relock(); 2135 break; 2136 default: 2137 return (EINVAL); 2138 } 2139 2140 if (oldp == NULL) 2141 needed += KERN_FILESLOP * elem_size; 2142 *oldlenp = needed; 2143 2144 return (error); 2145 } 2146 2147 static void 2148 fill_file(struct kinfo_file *kp, const file_t *fp, const fdfile_t *ff, 2149 int i, pid_t pid) 2150 { 2151 2152 memset(kp, 0, sizeof(*kp)); 2153 2154 kp->ki_fileaddr = PTRTOUINT64(fp); 2155 kp->ki_flag = fp->f_flag; 2156 kp->ki_iflags = fp->f_iflags; 2157 kp->ki_ftype = fp->f_type; 2158 kp->ki_count = fp->f_count; 2159 kp->ki_msgcount = fp->f_msgcount; 2160 kp->ki_fucred = PTRTOUINT64(fp->f_cred); 2161 kp->ki_fuid = kauth_cred_geteuid(fp->f_cred); 2162 kp->ki_fgid = kauth_cred_getegid(fp->f_cred); 2163 kp->ki_fops = PTRTOUINT64(fp->f_ops); 2164 kp->ki_foffset = fp->f_offset; 2165 kp->ki_fdata = PTRTOUINT64(fp->f_data); 2166 2167 /* vnode information to glue this file to something */ 2168 if (fp->f_type == DTYPE_VNODE) { 2169 struct vnode *vp = (struct vnode *)fp->f_data; 2170 2171 kp->ki_vun = PTRTOUINT64(vp->v_un.vu_socket); 2172 kp->ki_vsize = vp->v_size; 2173 kp->ki_vtype = vp->v_type; 2174 kp->ki_vtag = vp->v_tag; 2175 kp->ki_vdata = PTRTOUINT64(vp->v_data); 2176 } 2177 2178 /* process information when retrieved via KERN_FILE_BYPID */ 2179 if (ff != NULL) { 2180 kp->ki_pid = pid; 2181 kp->ki_fd = i; 2182 kp->ki_ofileflags = ff->ff_exclose; 2183 kp->ki_usecount = ff->ff_refcnt; 2184 } 2185 } 2186 2187 static int 2188 sysctl_doeproc(SYSCTLFN_ARGS) 2189 { 2190 struct eproc *eproc; 2191 struct kinfo_proc2 *kproc2; 2192 struct kinfo_proc *dp; 2193 struct proc *p, *next, *marker; 2194 char *where, *dp2; 2195 int type, op, arg, error; 2196 u_int elem_size, elem_count; 2197 size_t buflen, needed; 2198 bool match, zombie, mmmbrains; 2199 2200 if (namelen == 1 && name[0] == CTL_QUERY) 2201 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2202 2203 dp = oldp; 2204 dp2 = where = oldp; 2205 buflen = where != NULL ? *oldlenp : 0; 2206 error = 0; 2207 needed = 0; 2208 type = rnode->sysctl_num; 2209 2210 if (type == KERN_PROC) { 2211 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 2212 return (EINVAL); 2213 op = name[0]; 2214 if (op != KERN_PROC_ALL) 2215 arg = name[1]; 2216 else 2217 arg = 0; /* Quell compiler warning */ 2218 elem_size = elem_count = 0; /* Ditto */ 2219 } else { 2220 if (namelen != 4) 2221 return (EINVAL); 2222 op = name[0]; 2223 arg = name[1]; 2224 elem_size = name[2]; 2225 elem_count = name[3]; 2226 } 2227 2228 sysctl_unlock(); 2229 2230 if (type == KERN_PROC) { 2231 eproc = kmem_alloc(sizeof(*eproc), KM_SLEEP); 2232 kproc2 = NULL; 2233 } else { 2234 eproc = NULL; 2235 kproc2 = kmem_alloc(sizeof(*kproc2), KM_SLEEP); 2236 } 2237 marker = kmem_alloc(sizeof(*marker), KM_SLEEP); 2238 2239 mutex_enter(proc_lock); 2240 mmmbrains = false; 2241 for (p = LIST_FIRST(&allproc);; p = next) { 2242 if (p == NULL) { 2243 if (!mmmbrains) { 2244 p = LIST_FIRST(&zombproc); 2245 mmmbrains = true; 2246 } 2247 if (p == NULL) 2248 break; 2249 } 2250 next = LIST_NEXT(p, p_list); 2251 2252 /* 2253 * Skip embryonic processes. 2254 */ 2255 if (p->p_stat == SIDL) 2256 continue; 2257 2258 mutex_enter(p->p_lock); 2259 error = kauth_authorize_process(l->l_cred, 2260 KAUTH_PROCESS_CANSEE, p, 2261 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENTRY), NULL, NULL); 2262 if (error != 0) { 2263 mutex_exit(p->p_lock); 2264 continue; 2265 } 2266 2267 /* 2268 * TODO - make more efficient (see notes below). 2269 * do by session. 2270 */ 2271 switch (op) { 2272 case KERN_PROC_PID: 2273 /* could do this with just a lookup */ 2274 match = (p->p_pid == (pid_t)arg); 2275 break; 2276 2277 case KERN_PROC_PGRP: 2278 /* could do this by traversing pgrp */ 2279 match = (p->p_pgrp->pg_id == (pid_t)arg); 2280 break; 2281 2282 case KERN_PROC_SESSION: 2283 match = (p->p_session->s_sid == (pid_t)arg); 2284 break; 2285 2286 case KERN_PROC_TTY: 2287 match = true; 2288 if (arg == (int) KERN_PROC_TTY_REVOKE) { 2289 if ((p->p_lflag & PL_CONTROLT) == 0 || 2290 p->p_session->s_ttyp == NULL || 2291 p->p_session->s_ttyvp != NULL) { 2292 match = false; 2293 } 2294 } else if ((p->p_lflag & PL_CONTROLT) == 0 || 2295 p->p_session->s_ttyp == NULL) { 2296 if ((dev_t)arg != KERN_PROC_TTY_NODEV) { 2297 match = false; 2298 } 2299 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) { 2300 match = false; 2301 } 2302 break; 2303 2304 case KERN_PROC_UID: 2305 match = (kauth_cred_geteuid(p->p_cred) == (uid_t)arg); 2306 break; 2307 2308 case KERN_PROC_RUID: 2309 match = (kauth_cred_getuid(p->p_cred) == (uid_t)arg); 2310 break; 2311 2312 case KERN_PROC_GID: 2313 match = (kauth_cred_getegid(p->p_cred) == (uid_t)arg); 2314 break; 2315 2316 case KERN_PROC_RGID: 2317 match = (kauth_cred_getgid(p->p_cred) == (uid_t)arg); 2318 break; 2319 2320 case KERN_PROC_ALL: 2321 match = true; 2322 /* allow everything */ 2323 break; 2324 2325 default: 2326 error = EINVAL; 2327 mutex_exit(p->p_lock); 2328 goto cleanup; 2329 } 2330 if (!match) { 2331 mutex_exit(p->p_lock); 2332 continue; 2333 } 2334 2335 /* 2336 * Grab a hold on the process. 2337 */ 2338 if (mmmbrains) { 2339 zombie = true; 2340 } else { 2341 zombie = !rw_tryenter(&p->p_reflock, RW_READER); 2342 } 2343 if (zombie) { 2344 LIST_INSERT_AFTER(p, marker, p_list); 2345 } 2346 2347 if (type == KERN_PROC) { 2348 if (buflen >= sizeof(struct kinfo_proc)) { 2349 fill_eproc(p, eproc, zombie); 2350 mutex_exit(p->p_lock); 2351 mutex_exit(proc_lock); 2352 error = dcopyout(l, p, &dp->kp_proc, 2353 sizeof(struct proc)); 2354 mutex_enter(proc_lock); 2355 if (error) { 2356 goto bah; 2357 } 2358 error = dcopyout(l, eproc, &dp->kp_eproc, 2359 sizeof(*eproc)); 2360 if (error) { 2361 goto bah; 2362 } 2363 dp++; 2364 buflen -= sizeof(struct kinfo_proc); 2365 } else { 2366 mutex_exit(p->p_lock); 2367 } 2368 needed += sizeof(struct kinfo_proc); 2369 } else { /* KERN_PROC2 */ 2370 if (buflen >= elem_size && elem_count > 0) { 2371 fill_kproc2(p, kproc2, zombie); 2372 mutex_exit(p->p_lock); 2373 mutex_exit(proc_lock); 2374 /* 2375 * Copy out elem_size, but not larger than 2376 * the size of a struct kinfo_proc2. 2377 */ 2378 error = dcopyout(l, kproc2, dp2, 2379 min(sizeof(*kproc2), elem_size)); 2380 mutex_enter(proc_lock); 2381 if (error) { 2382 goto bah; 2383 } 2384 dp2 += elem_size; 2385 buflen -= elem_size; 2386 elem_count--; 2387 } else { 2388 mutex_exit(p->p_lock); 2389 } 2390 needed += elem_size; 2391 } 2392 2393 /* 2394 * Release reference to process. 2395 */ 2396 if (zombie) { 2397 next = LIST_NEXT(marker, p_list); 2398 LIST_REMOVE(marker, p_list); 2399 } else { 2400 rw_exit(&p->p_reflock); 2401 } 2402 } 2403 mutex_exit(proc_lock); 2404 2405 if (where != NULL) { 2406 if (type == KERN_PROC) 2407 *oldlenp = (char *)dp - where; 2408 else 2409 *oldlenp = dp2 - where; 2410 if (needed > *oldlenp) { 2411 error = ENOMEM; 2412 goto out; 2413 } 2414 } else { 2415 needed += KERN_PROCSLOP; 2416 *oldlenp = needed; 2417 } 2418 if (kproc2) 2419 kmem_free(kproc2, sizeof(*kproc2)); 2420 if (eproc) 2421 kmem_free(eproc, sizeof(*eproc)); 2422 if (marker) 2423 kmem_free(marker, sizeof(*marker)); 2424 sysctl_relock(); 2425 return 0; 2426 bah: 2427 if (zombie) 2428 LIST_REMOVE(marker, p_list); 2429 else 2430 rw_exit(&p->p_reflock); 2431 cleanup: 2432 mutex_exit(proc_lock); 2433 out: 2434 if (kproc2) 2435 kmem_free(kproc2, sizeof(*kproc2)); 2436 if (eproc) 2437 kmem_free(eproc, sizeof(*eproc)); 2438 if (marker) 2439 kmem_free(marker, sizeof(*marker)); 2440 sysctl_relock(); 2441 return error; 2442 } 2443 2444 /* 2445 * sysctl helper routine for kern.proc_args pseudo-subtree. 2446 */ 2447 static int 2448 sysctl_kern_proc_args(SYSCTLFN_ARGS) 2449 { 2450 struct ps_strings pss; 2451 struct proc *p; 2452 size_t len, i; 2453 struct uio auio; 2454 struct iovec aiov; 2455 pid_t pid; 2456 int nargv, type, error, argvlen; 2457 char *arg; 2458 char **argv = NULL; 2459 char *tmp; 2460 struct vmspace *vmspace; 2461 vaddr_t psstr_addr; 2462 vaddr_t offsetn; 2463 vaddr_t offsetv; 2464 2465 if (namelen == 1 && name[0] == CTL_QUERY) 2466 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2467 2468 if (newp != NULL || namelen != 2) 2469 return (EINVAL); 2470 pid = name[0]; 2471 type = name[1]; 2472 argv = NULL; 2473 argvlen = 0; 2474 2475 switch (type) { 2476 case KERN_PROC_ARGV: 2477 case KERN_PROC_NARGV: 2478 case KERN_PROC_ENV: 2479 case KERN_PROC_NENV: 2480 /* ok */ 2481 break; 2482 default: 2483 return (EINVAL); 2484 } 2485 2486 sysctl_unlock(); 2487 2488 /* check pid */ 2489 mutex_enter(proc_lock); 2490 if ((p = p_find(pid, PFIND_LOCKED)) == NULL) { 2491 error = EINVAL; 2492 goto out_locked; 2493 } 2494 mutex_enter(p->p_lock); 2495 2496 /* Check permission. */ 2497 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 2498 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2499 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ARGS), NULL, NULL); 2500 else if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) 2501 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2502 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENV), NULL, NULL); 2503 else 2504 error = EINVAL; /* XXXGCC */ 2505 if (error) { 2506 mutex_exit(p->p_lock); 2507 goto out_locked; 2508 } 2509 2510 if (oldp == NULL) { 2511 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 2512 *oldlenp = sizeof (int); 2513 else 2514 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 2515 error = 0; 2516 mutex_exit(p->p_lock); 2517 goto out_locked; 2518 } 2519 2520 /* 2521 * Zombies don't have a stack, so we can't read their psstrings. 2522 * System processes also don't have a user stack. 2523 */ 2524 if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) { 2525 error = EINVAL; 2526 mutex_exit(p->p_lock); 2527 goto out_locked; 2528 } 2529 2530 /* 2531 * Lock the process down in memory. 2532 */ 2533 psstr_addr = (vaddr_t)p->p_psstr; 2534 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) { 2535 offsetn = p->p_psnargv; 2536 offsetv = p->p_psargv; 2537 } else { 2538 offsetn = p->p_psnenv; 2539 offsetv = p->p_psenv; 2540 } 2541 vmspace = p->p_vmspace; 2542 uvmspace_addref(vmspace); 2543 mutex_exit(p->p_lock); 2544 mutex_exit(proc_lock); 2545 2546 /* 2547 * Allocate a temporary buffer to hold the arguments. 2548 */ 2549 arg = kmem_alloc(PAGE_SIZE, KM_SLEEP); 2550 2551 /* 2552 * Read in the ps_strings structure. 2553 */ 2554 aiov.iov_base = &pss; 2555 aiov.iov_len = sizeof(pss); 2556 auio.uio_iov = &aiov; 2557 auio.uio_iovcnt = 1; 2558 auio.uio_offset = psstr_addr; 2559 auio.uio_resid = sizeof(pss); 2560 auio.uio_rw = UIO_READ; 2561 UIO_SETUP_SYSSPACE(&auio); 2562 error = uvm_io(&vmspace->vm_map, &auio); 2563 if (error) 2564 goto done; 2565 2566 memcpy(&nargv, (char *)&pss + offsetn, sizeof(nargv)); 2567 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 2568 error = dcopyout(l, &nargv, oldp, sizeof(nargv)); 2569 *oldlenp = sizeof(nargv); 2570 goto done; 2571 } 2572 /* 2573 * Now read the address of the argument vector. 2574 */ 2575 switch (type) { 2576 case KERN_PROC_ARGV: 2577 /* FALLTHROUGH */ 2578 case KERN_PROC_ENV: 2579 memcpy(&tmp, (char *)&pss + offsetv, sizeof(tmp)); 2580 break; 2581 default: 2582 error = EINVAL; 2583 goto done; 2584 } 2585 2586 #ifdef COMPAT_NETBSD32 2587 if (p->p_flag & PK_32) 2588 len = sizeof(netbsd32_charp) * nargv; 2589 else 2590 #endif 2591 len = sizeof(char *) * nargv; 2592 2593 if ((argvlen = len) != 0) 2594 argv = kmem_alloc(len, KM_SLEEP); 2595 2596 aiov.iov_base = argv; 2597 aiov.iov_len = len; 2598 auio.uio_iov = &aiov; 2599 auio.uio_iovcnt = 1; 2600 auio.uio_offset = (off_t)(unsigned long)tmp; 2601 auio.uio_resid = len; 2602 auio.uio_rw = UIO_READ; 2603 UIO_SETUP_SYSSPACE(&auio); 2604 error = uvm_io(&vmspace->vm_map, &auio); 2605 if (error) 2606 goto done; 2607 2608 /* 2609 * Now copy each string. 2610 */ 2611 len = 0; /* bytes written to user buffer */ 2612 for (i = 0; i < nargv; i++) { 2613 int finished = 0; 2614 vaddr_t base; 2615 size_t xlen; 2616 int j; 2617 2618 #ifdef COMPAT_NETBSD32 2619 if (p->p_flag & PK_32) { 2620 netbsd32_charp *argv32; 2621 2622 argv32 = (netbsd32_charp *)argv; 2623 base = (vaddr_t)NETBSD32PTR64(argv32[i]); 2624 } else 2625 #endif 2626 base = (vaddr_t)argv[i]; 2627 2628 /* 2629 * The program has messed around with its arguments, 2630 * possibly deleting some, and replacing them with 2631 * NULL's. Treat this as the last argument and not 2632 * a failure. 2633 */ 2634 if (base == 0) 2635 break; 2636 2637 while (!finished) { 2638 xlen = PAGE_SIZE - (base & PAGE_MASK); 2639 2640 aiov.iov_base = arg; 2641 aiov.iov_len = PAGE_SIZE; 2642 auio.uio_iov = &aiov; 2643 auio.uio_iovcnt = 1; 2644 auio.uio_offset = base; 2645 auio.uio_resid = xlen; 2646 auio.uio_rw = UIO_READ; 2647 UIO_SETUP_SYSSPACE(&auio); 2648 error = uvm_io(&vmspace->vm_map, &auio); 2649 if (error) 2650 goto done; 2651 2652 /* Look for the end of the string */ 2653 for (j = 0; j < xlen; j++) { 2654 if (arg[j] == '\0') { 2655 xlen = j + 1; 2656 finished = 1; 2657 break; 2658 } 2659 } 2660 2661 /* Check for user buffer overflow */ 2662 if (len + xlen > *oldlenp) { 2663 finished = 1; 2664 if (len > *oldlenp) 2665 xlen = 0; 2666 else 2667 xlen = *oldlenp - len; 2668 } 2669 2670 /* Copyout the page */ 2671 error = dcopyout(l, arg, (char *)oldp + len, xlen); 2672 if (error) 2673 goto done; 2674 2675 len += xlen; 2676 base += xlen; 2677 } 2678 } 2679 *oldlenp = len; 2680 2681 done: 2682 if (argvlen != 0) 2683 kmem_free(argv, argvlen); 2684 uvmspace_free(vmspace); 2685 kmem_free(arg, PAGE_SIZE); 2686 sysctl_relock(); 2687 return error; 2688 2689 out_locked: 2690 mutex_exit(proc_lock); 2691 sysctl_relock(); 2692 return error; 2693 } 2694 2695 static int 2696 sysctl_security_setidcore(SYSCTLFN_ARGS) 2697 { 2698 int newsize, error; 2699 struct sysctlnode node; 2700 2701 node = *rnode; 2702 node.sysctl_data = &newsize; 2703 newsize = *(int *)rnode->sysctl_data; 2704 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2705 if (error || newp == NULL) 2706 return error; 2707 2708 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2709 0, NULL, NULL, NULL)) 2710 return (EPERM); 2711 2712 *(int *)rnode->sysctl_data = newsize; 2713 2714 return 0; 2715 } 2716 2717 static int 2718 sysctl_security_setidcorename(SYSCTLFN_ARGS) 2719 { 2720 int error; 2721 char *newsetidcorename; 2722 struct sysctlnode node; 2723 2724 newsetidcorename = PNBUF_GET(); 2725 node = *rnode; 2726 node.sysctl_data = newsetidcorename; 2727 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 2728 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2729 if (error || newp == NULL) { 2730 goto out; 2731 } 2732 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2733 0, NULL, NULL, NULL)) { 2734 error = EPERM; 2735 goto out; 2736 } 2737 if (strlen(newsetidcorename) == 0) { 2738 error = EINVAL; 2739 goto out; 2740 } 2741 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 2742 out: 2743 PNBUF_PUT(newsetidcorename); 2744 return error; 2745 } 2746 2747 /* 2748 * sysctl helper routine for kern.cp_id node. Maps cpus to their 2749 * cpuids. 2750 */ 2751 static int 2752 sysctl_kern_cpid(SYSCTLFN_ARGS) 2753 { 2754 struct sysctlnode node = *rnode; 2755 uint64_t *cp_id = NULL; 2756 int error, n = ncpu; 2757 struct cpu_info *ci; 2758 CPU_INFO_ITERATOR cii; 2759 2760 /* 2761 * Here you may either retrieve a single cpu id or the whole 2762 * set. The size you get back when probing depends on what 2763 * you ask for. 2764 */ 2765 switch (namelen) { 2766 case 0: 2767 node.sysctl_size = n * sizeof(uint64_t); 2768 n = -2; /* ALL */ 2769 break; 2770 case 1: 2771 if (name[0] < 0 || name[0] >= n) 2772 return (ENOENT); /* ENOSUCHPROCESSOR */ 2773 node.sysctl_size = sizeof(uint64_t); 2774 n = name[0]; 2775 /* 2776 * adjust these so that sysctl_lookup() will be happy 2777 */ 2778 name++; 2779 namelen--; 2780 break; 2781 default: 2782 return (EINVAL); 2783 } 2784 2785 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 2786 if (cp_id == NULL) 2787 return (ENOMEM); 2788 node.sysctl_data = cp_id; 2789 memset(cp_id, 0, node.sysctl_size); 2790 2791 for (CPU_INFO_FOREACH(cii, ci)) { 2792 if (n <= 0) 2793 cp_id[0] = cpu_index(ci); 2794 /* 2795 * if a specific processor was requested and we just 2796 * did it, we're done here 2797 */ 2798 if (n == 0) 2799 break; 2800 /* 2801 * if doing "all", skip to next cp_id slot for next processor 2802 */ 2803 if (n == -2) 2804 cp_id++; 2805 /* 2806 * if we're doing a specific processor, we're one 2807 * processor closer 2808 */ 2809 if (n > 0) 2810 n--; 2811 } 2812 2813 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2814 kmem_free(node.sysctl_data, node.sysctl_size); 2815 return (error); 2816 } 2817 2818 /* 2819 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 2820 * calculate on the fly taking into account integer overflow and the 2821 * current wired count. 2822 */ 2823 static int 2824 sysctl_hw_usermem(SYSCTLFN_ARGS) 2825 { 2826 u_int ui; 2827 u_quad_t uq; 2828 struct sysctlnode node; 2829 2830 node = *rnode; 2831 switch (rnode->sysctl_num) { 2832 case HW_USERMEM: 2833 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 2834 ui = UINT_MAX; 2835 else 2836 ui *= PAGE_SIZE; 2837 node.sysctl_data = &ui; 2838 break; 2839 case HW_USERMEM64: 2840 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2841 node.sysctl_data = &uq; 2842 break; 2843 default: 2844 return (EINVAL); 2845 } 2846 2847 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2848 } 2849 2850 /* 2851 * sysctl helper routine for kern.cnmagic node. Pulls the old value 2852 * out, encoded, and stuffs the new value in for decoding. 2853 */ 2854 static int 2855 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2856 { 2857 char magic[CNS_LEN]; 2858 int error; 2859 struct sysctlnode node; 2860 2861 if (oldp) 2862 cn_get_magic(magic, CNS_LEN); 2863 node = *rnode; 2864 node.sysctl_data = &magic[0]; 2865 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2866 if (error || newp == NULL) 2867 return (error); 2868 2869 return (cn_set_magic(magic)); 2870 } 2871 2872 /* 2873 * ******************************************************************** 2874 * section 3: public helper routines that are used for more than one 2875 * node 2876 * ******************************************************************** 2877 */ 2878 2879 /* 2880 * sysctl helper routine for the kern.root_device node and some ports' 2881 * machdep.root_device nodes. 2882 */ 2883 int 2884 sysctl_root_device(SYSCTLFN_ARGS) 2885 { 2886 struct sysctlnode node; 2887 2888 node = *rnode; 2889 node.sysctl_data = root_device->dv_xname; 2890 node.sysctl_size = strlen(device_xname(root_device)) + 1; 2891 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2892 } 2893 2894 /* 2895 * sysctl helper routine for kern.consdev, dependent on the current 2896 * state of the console. Also used for machdep.console_device on some 2897 * ports. 2898 */ 2899 int 2900 sysctl_consdev(SYSCTLFN_ARGS) 2901 { 2902 dev_t consdev; 2903 struct sysctlnode node; 2904 2905 if (cn_tab != NULL) 2906 consdev = cn_tab->cn_dev; 2907 else 2908 consdev = NODEV; 2909 node = *rnode; 2910 node.sysctl_data = &consdev; 2911 node.sysctl_size = sizeof(consdev); 2912 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2913 } 2914 2915 /* 2916 * ******************************************************************** 2917 * section 4: support for some helpers 2918 * ******************************************************************** 2919 */ 2920 /* 2921 * Find the most ``active'' lwp of a process and return it for ps display 2922 * purposes 2923 */ 2924 static struct lwp * 2925 proc_active_lwp(struct proc *p) 2926 { 2927 static const int ostat[] = { 2928 0, 2929 2, /* LSIDL */ 2930 6, /* LSRUN */ 2931 5, /* LSSLEEP */ 2932 4, /* LSSTOP */ 2933 0, /* LSZOMB */ 2934 1, /* LSDEAD */ 2935 7, /* LSONPROC */ 2936 3 /* LSSUSPENDED */ 2937 }; 2938 2939 struct lwp *l, *lp = NULL; 2940 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 2941 KASSERT(l->l_stat >= 0 && l->l_stat < __arraycount(ostat)); 2942 if (lp == NULL || 2943 ostat[l->l_stat] > ostat[lp->l_stat] || 2944 (ostat[l->l_stat] == ostat[lp->l_stat] && 2945 l->l_cpticks > lp->l_cpticks)) { 2946 lp = l; 2947 continue; 2948 } 2949 } 2950 return lp; 2951 } 2952 2953 2954 /* 2955 * Fill in a kinfo_proc2 structure for the specified process. 2956 */ 2957 static void 2958 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki, bool zombie) 2959 { 2960 struct tty *tp; 2961 struct lwp *l, *l2; 2962 struct timeval ut, st, rt; 2963 sigset_t ss1, ss2; 2964 struct rusage ru; 2965 struct vmspace *vm; 2966 2967 KASSERT(mutex_owned(proc_lock)); 2968 KASSERT(mutex_owned(p->p_lock)); 2969 2970 sigemptyset(&ss1); 2971 sigemptyset(&ss2); 2972 memset(ki, 0, sizeof(*ki)); 2973 2974 ki->p_paddr = PTRTOUINT64(p); 2975 ki->p_fd = PTRTOUINT64(p->p_fd); 2976 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2977 ki->p_stats = PTRTOUINT64(p->p_stats); 2978 ki->p_limit = PTRTOUINT64(p->p_limit); 2979 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2980 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2981 ki->p_sess = PTRTOUINT64(p->p_session); 2982 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2983 ki->p_ru = PTRTOUINT64(&p->p_stats->p_ru); 2984 ki->p_eflag = 0; 2985 ki->p_exitsig = p->p_exitsig; 2986 ki->p_flag = sysctl_map_flags(sysctl_flagmap, p->p_flag); 2987 ki->p_flag |= sysctl_map_flags(sysctl_sflagmap, p->p_sflag); 2988 ki->p_flag |= sysctl_map_flags(sysctl_slflagmap, p->p_slflag); 2989 ki->p_flag |= sysctl_map_flags(sysctl_lflagmap, p->p_lflag); 2990 ki->p_flag |= sysctl_map_flags(sysctl_stflagmap, p->p_stflag); 2991 ki->p_pid = p->p_pid; 2992 if (p->p_pptr) 2993 ki->p_ppid = p->p_pptr->p_pid; 2994 else 2995 ki->p_ppid = 0; 2996 ki->p_uid = kauth_cred_geteuid(p->p_cred); 2997 ki->p_ruid = kauth_cred_getuid(p->p_cred); 2998 ki->p_gid = kauth_cred_getegid(p->p_cred); 2999 ki->p_rgid = kauth_cred_getgid(p->p_cred); 3000 ki->p_svuid = kauth_cred_getsvuid(p->p_cred); 3001 ki->p_svgid = kauth_cred_getsvgid(p->p_cred); 3002 ki->p_ngroups = kauth_cred_ngroups(p->p_cred); 3003 kauth_cred_getgroups(p->p_cred, ki->p_groups, 3004 min(ki->p_ngroups, sizeof(ki->p_groups) / sizeof(ki->p_groups[0])), 3005 UIO_SYSSPACE); 3006 3007 ki->p_uticks = p->p_uticks; 3008 ki->p_sticks = p->p_sticks; 3009 ki->p_iticks = p->p_iticks; 3010 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 3011 ki->p_tracep = PTRTOUINT64(p->p_tracep); 3012 ki->p_traceflag = p->p_traceflag; 3013 3014 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 3015 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 3016 3017 ki->p_cpticks = 0; 3018 ki->p_pctcpu = p->p_pctcpu; 3019 ki->p_estcpu = 0; 3020 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 3021 ki->p_realstat = p->p_stat; 3022 ki->p_nice = p->p_nice; 3023 ki->p_xstat = p->p_xstat; 3024 ki->p_acflag = p->p_acflag; 3025 3026 strncpy(ki->p_comm, p->p_comm, 3027 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 3028 strncpy(ki->p_ename, p->p_emul->e_name, sizeof(ki->p_ename)); 3029 3030 ki->p_nlwps = p->p_nlwps; 3031 ki->p_realflag = ki->p_flag; 3032 3033 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3034 vm = p->p_vmspace; 3035 ki->p_vm_rssize = vm_resident_count(vm); 3036 ki->p_vm_tsize = vm->vm_tsize; 3037 ki->p_vm_dsize = vm->vm_dsize; 3038 ki->p_vm_ssize = vm->vm_ssize; 3039 3040 /* Pick the primary (first) LWP */ 3041 l = proc_active_lwp(p); 3042 KASSERT(l != NULL); 3043 lwp_lock(l); 3044 ki->p_nrlwps = p->p_nrlwps; 3045 ki->p_forw = 0; 3046 ki->p_back = 0; 3047 ki->p_addr = PTRTOUINT64(l->l_addr); 3048 ki->p_stat = l->l_stat; 3049 ki->p_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3050 ki->p_swtime = l->l_swtime; 3051 ki->p_slptime = l->l_slptime; 3052 if (l->l_stat == LSONPROC) 3053 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3054 else 3055 ki->p_schedflags = 0; 3056 ki->p_holdcnt = l->l_holdcnt; 3057 ki->p_priority = lwp_eprio(l); 3058 ki->p_usrpri = l->l_priority; 3059 if (l->l_wchan) 3060 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 3061 ki->p_wchan = PTRTOUINT64(l->l_wchan); 3062 ki->p_cpuid = cpu_index(l->l_cpu); 3063 lwp_unlock(l); 3064 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 3065 /* This is hardly correct, but... */ 3066 sigplusset(&l->l_sigpend.sp_set, &ss1); 3067 sigplusset(&l->l_sigmask, &ss2); 3068 ki->p_cpticks += l->l_cpticks; 3069 ki->p_pctcpu += l->l_pctcpu; 3070 ki->p_estcpu += l->l_estcpu; 3071 } 3072 } 3073 sigplusset(&p->p_sigpend.sp_set, &ss2); 3074 memcpy(&ki->p_siglist, &ss1, sizeof(ki_sigset_t)); 3075 memcpy(&ki->p_sigmask, &ss2, sizeof(ki_sigset_t)); 3076 3077 if (p->p_session != NULL) { 3078 ki->p_sid = p->p_session->s_sid; 3079 ki->p__pgid = p->p_pgrp->pg_id; 3080 if (p->p_session->s_ttyvp) 3081 ki->p_eflag |= EPROC_CTTY; 3082 if (SESS_LEADER(p)) 3083 ki->p_eflag |= EPROC_SLEADER; 3084 strncpy(ki->p_login, p->p_session->s_login, 3085 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 3086 ki->p_jobc = p->p_pgrp->pg_jobc; 3087 if ((p->p_lflag & PL_CONTROLT) && (tp = p->p_session->s_ttyp)) { 3088 ki->p_tdev = tp->t_dev; 3089 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3090 ki->p_tsess = PTRTOUINT64(tp->t_session); 3091 } else { 3092 ki->p_tdev = (int32_t)NODEV; 3093 } 3094 } 3095 3096 if (!P_ZOMBIE(p) && !zombie) { 3097 ki->p_uvalid = 1; 3098 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 3099 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 3100 3101 calcru(p, &ut, &st, NULL, &rt); 3102 ki->p_rtime_sec = rt.tv_sec; 3103 ki->p_rtime_usec = rt.tv_usec; 3104 ki->p_uutime_sec = ut.tv_sec; 3105 ki->p_uutime_usec = ut.tv_usec; 3106 ki->p_ustime_sec = st.tv_sec; 3107 ki->p_ustime_usec = st.tv_usec; 3108 3109 memcpy(&ru, &p->p_stats->p_ru, sizeof(ru)); 3110 ki->p_uru_nvcsw = 0; 3111 ki->p_uru_nivcsw = 0; 3112 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 3113 ki->p_uru_nvcsw += (l2->l_ncsw - l2->l_nivcsw); 3114 ki->p_uru_nivcsw += l2->l_nivcsw; 3115 ruadd(&ru, &l2->l_ru); 3116 } 3117 ki->p_uru_maxrss = ru.ru_maxrss; 3118 ki->p_uru_ixrss = ru.ru_ixrss; 3119 ki->p_uru_idrss = ru.ru_idrss; 3120 ki->p_uru_isrss = ru.ru_isrss; 3121 ki->p_uru_minflt = ru.ru_minflt; 3122 ki->p_uru_majflt = ru.ru_majflt; 3123 ki->p_uru_nswap = ru.ru_nswap; 3124 ki->p_uru_inblock = ru.ru_inblock; 3125 ki->p_uru_oublock = ru.ru_oublock; 3126 ki->p_uru_msgsnd = ru.ru_msgsnd; 3127 ki->p_uru_msgrcv = ru.ru_msgrcv; 3128 ki->p_uru_nsignals = ru.ru_nsignals; 3129 3130 timeradd(&p->p_stats->p_cru.ru_utime, 3131 &p->p_stats->p_cru.ru_stime, &ut); 3132 ki->p_uctime_sec = ut.tv_sec; 3133 ki->p_uctime_usec = ut.tv_usec; 3134 } 3135 } 3136 3137 /* 3138 * Fill in a kinfo_lwp structure for the specified lwp. 3139 */ 3140 static void 3141 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 3142 { 3143 struct proc *p = l->l_proc; 3144 struct timeval tv; 3145 3146 KASSERT(lwp_locked(l, NULL)); 3147 3148 kl->l_forw = 0; 3149 kl->l_back = 0; 3150 kl->l_laddr = PTRTOUINT64(l); 3151 kl->l_addr = PTRTOUINT64(l->l_addr); 3152 kl->l_stat = l->l_stat; 3153 kl->l_lid = l->l_lid; 3154 kl->l_flag = sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 3155 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3156 3157 kl->l_swtime = l->l_swtime; 3158 kl->l_slptime = l->l_slptime; 3159 if (l->l_stat == LSONPROC) 3160 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3161 else 3162 kl->l_schedflags = 0; 3163 kl->l_holdcnt = l->l_holdcnt; 3164 kl->l_priority = lwp_eprio(l); 3165 kl->l_usrpri = l->l_priority; 3166 if (l->l_wchan) 3167 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 3168 kl->l_wchan = PTRTOUINT64(l->l_wchan); 3169 kl->l_cpuid = cpu_index(l->l_cpu); 3170 bintime2timeval(&l->l_rtime, &tv); 3171 kl->l_rtime_sec = tv.tv_sec; 3172 kl->l_rtime_usec = tv.tv_usec; 3173 kl->l_cpticks = l->l_cpticks; 3174 kl->l_pctcpu = l->l_pctcpu; 3175 kl->l_pid = p->p_pid; 3176 if (l->l_name == NULL) 3177 kl->l_name[0] = '\0'; 3178 else 3179 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 3180 } 3181 3182 /* 3183 * Fill in an eproc structure for the specified process. 3184 */ 3185 void 3186 fill_eproc(struct proc *p, struct eproc *ep, bool zombie) 3187 { 3188 struct tty *tp; 3189 struct lwp *l; 3190 3191 KASSERT(mutex_owned(proc_lock)); 3192 KASSERT(mutex_owned(p->p_lock)); 3193 3194 memset(ep, 0, sizeof(*ep)); 3195 3196 ep->e_paddr = p; 3197 ep->e_sess = p->p_session; 3198 if (p->p_cred) { 3199 kauth_cred_topcred(p->p_cred, &ep->e_pcred); 3200 kauth_cred_toucred(p->p_cred, &ep->e_ucred); 3201 } 3202 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3203 struct vmspace *vm = p->p_vmspace; 3204 3205 ep->e_vm.vm_rssize = vm_resident_count(vm); 3206 ep->e_vm.vm_tsize = vm->vm_tsize; 3207 ep->e_vm.vm_dsize = vm->vm_dsize; 3208 ep->e_vm.vm_ssize = vm->vm_ssize; 3209 3210 /* Pick the primary (first) LWP */ 3211 l = proc_active_lwp(p); 3212 KASSERT(l != NULL); 3213 lwp_lock(l); 3214 if (l->l_wchan) 3215 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 3216 lwp_unlock(l); 3217 } 3218 if (p->p_pptr) 3219 ep->e_ppid = p->p_pptr->p_pid; 3220 if (p->p_pgrp && p->p_session) { 3221 ep->e_pgid = p->p_pgrp->pg_id; 3222 ep->e_jobc = p->p_pgrp->pg_jobc; 3223 ep->e_sid = p->p_session->s_sid; 3224 if ((p->p_lflag & PL_CONTROLT) && 3225 (tp = ep->e_sess->s_ttyp)) { 3226 ep->e_tdev = tp->t_dev; 3227 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3228 ep->e_tsess = tp->t_session; 3229 } else 3230 ep->e_tdev = NODEV; 3231 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 3232 if (SESS_LEADER(p)) 3233 ep->e_flag |= EPROC_SLEADER; 3234 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 3235 } 3236 ep->e_xsize = ep->e_xrssize = 0; 3237 ep->e_xccount = ep->e_xswrss = 0; 3238 } 3239 3240 u_int 3241 sysctl_map_flags(const u_int *map, u_int word) 3242 { 3243 u_int rv; 3244 3245 for (rv = 0; *map != 0; map += 2) 3246 if ((word & map[0]) != 0) 3247 rv |= map[1]; 3248 3249 return rv; 3250 } 3251
Indexes created Wed Oct 01 15:09:59 GMT 2025