init_sysctl.c revision 1.150
1 /* $NetBSD: init_sysctl.c,v 1.150 2008/11/12 14:32:34 ad 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 1.150 2008/11/12 14:32:34 ad Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_compat_netbsd32.h" 37 #include "opt_sa.h" 38 #include "opt_posix.h" 39 #include "pty.h" 40 #include "rnd.h" 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/sysctl.h> 45 #include <sys/cpu.h> 46 #include <sys/errno.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/unistd.h> 50 #include <sys/disklabel.h> 51 #include <sys/rnd.h> 52 #include <sys/vnode.h> 53 #include <sys/mount.h> 54 #include <sys/namei.h> 55 #include <sys/msgbuf.h> 56 #include <dev/cons.h> 57 #include <sys/socketvar.h> 58 #include <sys/file.h> 59 #include <sys/filedesc.h> 60 #include <sys/tty.h> 61 #include <sys/malloc.h> 62 #include <sys/resource.h> 63 #include <sys/resourcevar.h> 64 #include <sys/exec.h> 65 #include <sys/conf.h> 66 #include <sys/device.h> 67 #include <sys/stat.h> 68 #include <sys/kauth.h> 69 #include <sys/ktrace.h> 70 #include <sys/ksem.h> 71 72 #include <miscfs/specfs/specdev.h> 73 74 #ifdef COMPAT_NETBSD32 75 #include <compat/netbsd32/netbsd32.h> 76 #endif 77 78 #ifdef KERN_SA 79 #include <sys/sa.h> 80 #endif 81 82 #include <sys/cpu.h> 83 84 #if defined(MODULAR) || defined(P1003_1B_SEMAPHORE) 85 int posix_semaphores = 200112; 86 #else 87 int posix_semaphores; 88 #endif 89 90 int security_setidcore_dump; 91 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 92 uid_t security_setidcore_owner = 0; 93 gid_t security_setidcore_group = 0; 94 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 95 96 static const u_int sysctl_flagmap[] = { 97 PK_ADVLOCK, P_ADVLOCK, 98 PK_EXEC, P_EXEC, 99 PK_NOCLDWAIT, P_NOCLDWAIT, 100 PK_32, P_32, 101 PK_CLDSIGIGN, P_CLDSIGIGN, 102 PK_SUGID, P_SUGID, 103 0 104 }; 105 106 static const u_int sysctl_sflagmap[] = { 107 PS_NOCLDSTOP, P_NOCLDSTOP, 108 PS_WEXIT, P_WEXIT, 109 PS_STOPFORK, P_STOPFORK, 110 PS_STOPEXEC, P_STOPEXEC, 111 PS_STOPEXIT, P_STOPEXIT, 112 0 113 }; 114 115 static const u_int sysctl_slflagmap[] = { 116 PSL_TRACED, P_TRACED, 117 PSL_FSTRACE, P_FSTRACE, 118 PSL_CHTRACED, P_CHTRACED, 119 PSL_SYSCALL, P_SYSCALL, 120 0 121 }; 122 123 static const u_int sysctl_lflagmap[] = { 124 PL_CONTROLT, P_CONTROLT, 125 PL_PPWAIT, P_PPWAIT, 126 0 127 }; 128 129 static const u_int sysctl_stflagmap[] = { 130 PST_PROFIL, P_PROFIL, 131 0 132 133 }; 134 135 static const u_int sysctl_lwpflagmap[] = { 136 LW_INMEM, P_INMEM, 137 LW_SINTR, P_SINTR, 138 LW_SYSTEM, P_SYSTEM, 139 LW_SA, P_SA, /* WRS ??? */ 140 0 141 }; 142 143 static const u_int sysctl_lwpprflagmap[] = { 144 LPR_DETACHED, L_DETACHED, 145 0 146 }; 147 148 /* 149 * try over estimating by 5 procs/lwps 150 */ 151 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 152 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 153 154 static int dcopyout(struct lwp *, const void *, void *, size_t); 155 156 static int 157 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 158 { 159 int error; 160 161 error = copyout(kaddr, uaddr, len); 162 ktrmibio(-1, UIO_READ, uaddr, len, error); 163 164 return error; 165 } 166 167 #ifdef DIAGNOSTIC 168 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 169 #endif 170 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 171 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 172 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 173 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 174 static int sysctl_setlen(SYSCTLFN_PROTO); 175 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 176 static int sysctl_kern_file(SYSCTLFN_PROTO); 177 static int sysctl_msgbuf(SYSCTLFN_PROTO); 178 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 179 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 180 #if NPTY > 0 181 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 182 #endif /* NPTY > 0 */ 183 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 184 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 185 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 186 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 187 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 188 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 189 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 190 static int sysctl_kern_file2(SYSCTLFN_PROTO); 191 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 192 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 193 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 194 static int sysctl_doeproc(SYSCTLFN_PROTO); 195 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 196 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 197 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 198 199 static u_int sysctl_map_flags(const u_int *, u_int); 200 static void fill_kproc2(struct proc *, struct kinfo_proc2 *, bool); 201 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 202 static void fill_file(struct kinfo_file *, const file_t *, const fdfile_t *, 203 int, pid_t); 204 205 /* 206 * ******************************************************************** 207 * section 1: setup routines 208 * ******************************************************************** 209 * These functions are stuffed into a link set for sysctl setup 210 * functions. They're never called or referenced from anywhere else. 211 * ******************************************************************** 212 */ 213 214 /* 215 * sets up the base nodes... 216 */ 217 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 218 { 219 220 sysctl_createv(clog, 0, NULL, NULL, 221 CTLFLAG_PERMANENT, 222 CTLTYPE_NODE, "kern", 223 SYSCTL_DESCR("High kernel"), 224 NULL, 0, NULL, 0, 225 CTL_KERN, CTL_EOL); 226 sysctl_createv(clog, 0, NULL, NULL, 227 CTLFLAG_PERMANENT, 228 CTLTYPE_NODE, "vm", 229 SYSCTL_DESCR("Virtual memory"), 230 NULL, 0, NULL, 0, 231 CTL_VM, CTL_EOL); 232 sysctl_createv(clog, 0, NULL, NULL, 233 CTLFLAG_PERMANENT, 234 CTLTYPE_NODE, "vfs", 235 SYSCTL_DESCR("Filesystem"), 236 NULL, 0, NULL, 0, 237 CTL_VFS, CTL_EOL); 238 sysctl_createv(clog, 0, NULL, NULL, 239 CTLFLAG_PERMANENT, 240 CTLTYPE_NODE, "net", 241 SYSCTL_DESCR("Networking"), 242 NULL, 0, NULL, 0, 243 CTL_NET, CTL_EOL); 244 sysctl_createv(clog, 0, NULL, NULL, 245 CTLFLAG_PERMANENT, 246 CTLTYPE_NODE, "debug", 247 SYSCTL_DESCR("Debugging"), 248 NULL, 0, NULL, 0, 249 CTL_DEBUG, CTL_EOL); 250 sysctl_createv(clog, 0, NULL, NULL, 251 CTLFLAG_PERMANENT, 252 CTLTYPE_NODE, "hw", 253 SYSCTL_DESCR("Generic CPU, I/O"), 254 NULL, 0, NULL, 0, 255 CTL_HW, CTL_EOL); 256 sysctl_createv(clog, 0, NULL, NULL, 257 CTLFLAG_PERMANENT, 258 CTLTYPE_NODE, "machdep", 259 SYSCTL_DESCR("Machine dependent"), 260 NULL, 0, NULL, 0, 261 CTL_MACHDEP, CTL_EOL); 262 /* 263 * this node is inserted so that the sysctl nodes in libc can 264 * operate. 265 */ 266 sysctl_createv(clog, 0, NULL, NULL, 267 CTLFLAG_PERMANENT, 268 CTLTYPE_NODE, "user", 269 SYSCTL_DESCR("User-level"), 270 NULL, 0, NULL, 0, 271 CTL_USER, CTL_EOL); 272 sysctl_createv(clog, 0, NULL, NULL, 273 CTLFLAG_PERMANENT, 274 CTLTYPE_NODE, "ddb", 275 SYSCTL_DESCR("In-kernel debugger"), 276 NULL, 0, NULL, 0, 277 CTL_DDB, CTL_EOL); 278 sysctl_createv(clog, 0, NULL, NULL, 279 CTLFLAG_PERMANENT, 280 CTLTYPE_NODE, "proc", 281 SYSCTL_DESCR("Per-process"), 282 NULL, 0, NULL, 0, 283 CTL_PROC, CTL_EOL); 284 sysctl_createv(clog, 0, NULL, NULL, 285 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 286 CTLTYPE_NODE, "vendor", 287 SYSCTL_DESCR("Vendor specific"), 288 NULL, 0, NULL, 0, 289 CTL_VENDOR, CTL_EOL); 290 sysctl_createv(clog, 0, NULL, NULL, 291 CTLFLAG_PERMANENT, 292 CTLTYPE_NODE, "emul", 293 SYSCTL_DESCR("Emulation settings"), 294 NULL, 0, NULL, 0, 295 CTL_EMUL, CTL_EOL); 296 sysctl_createv(clog, 0, NULL, NULL, 297 CTLFLAG_PERMANENT, 298 CTLTYPE_NODE, "security", 299 SYSCTL_DESCR("Security"), 300 NULL, 0, NULL, 0, 301 CTL_SECURITY, CTL_EOL); 302 } 303 304 /* 305 * this setup routine is a replacement for kern_sysctl() 306 */ 307 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 308 { 309 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 310 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 311 extern int dumponpanic; /* defined in kern/subr_prf.c */ 312 const struct sysctlnode *rnode; 313 314 sysctl_createv(clog, 0, NULL, NULL, 315 CTLFLAG_PERMANENT, 316 CTLTYPE_NODE, "kern", NULL, 317 NULL, 0, NULL, 0, 318 CTL_KERN, CTL_EOL); 319 320 sysctl_createv(clog, 0, NULL, NULL, 321 CTLFLAG_PERMANENT, 322 CTLTYPE_STRING, "ostype", 323 SYSCTL_DESCR("Operating system type"), 324 NULL, 0, &ostype, 0, 325 CTL_KERN, KERN_OSTYPE, CTL_EOL); 326 sysctl_createv(clog, 0, NULL, NULL, 327 CTLFLAG_PERMANENT, 328 CTLTYPE_STRING, "osrelease", 329 SYSCTL_DESCR("Operating system release"), 330 NULL, 0, &osrelease, 0, 331 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 332 sysctl_createv(clog, 0, NULL, NULL, 333 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 334 CTLTYPE_INT, "osrevision", 335 SYSCTL_DESCR("Operating system revision"), 336 NULL, __NetBSD_Version__, NULL, 0, 337 CTL_KERN, KERN_OSREV, CTL_EOL); 338 sysctl_createv(clog, 0, NULL, NULL, 339 CTLFLAG_PERMANENT, 340 CTLTYPE_STRING, "version", 341 SYSCTL_DESCR("Kernel version"), 342 NULL, 0, &version, 0, 343 CTL_KERN, KERN_VERSION, CTL_EOL); 344 sysctl_createv(clog, 0, NULL, NULL, 345 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 346 CTLTYPE_INT, "maxvnodes", 347 SYSCTL_DESCR("Maximum number of vnodes"), 348 sysctl_kern_maxvnodes, 0, NULL, 0, 349 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 350 sysctl_createv(clog, 0, NULL, NULL, 351 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 352 CTLTYPE_INT, "maxproc", 353 SYSCTL_DESCR("Maximum number of simultaneous processes"), 354 sysctl_kern_maxproc, 0, NULL, 0, 355 CTL_KERN, KERN_MAXPROC, CTL_EOL); 356 sysctl_createv(clog, 0, NULL, NULL, 357 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 358 CTLTYPE_INT, "maxfiles", 359 SYSCTL_DESCR("Maximum number of open files"), 360 NULL, 0, &maxfiles, 0, 361 CTL_KERN, KERN_MAXFILES, CTL_EOL); 362 sysctl_createv(clog, 0, NULL, NULL, 363 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 364 CTLTYPE_INT, "argmax", 365 SYSCTL_DESCR("Maximum number of bytes of arguments to " 366 "execve(2)"), 367 NULL, ARG_MAX, NULL, 0, 368 CTL_KERN, KERN_ARGMAX, CTL_EOL); 369 sysctl_createv(clog, 0, NULL, NULL, 370 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 371 CTLTYPE_STRING, "hostname", 372 SYSCTL_DESCR("System hostname"), 373 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 374 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 375 sysctl_createv(clog, 0, NULL, NULL, 376 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 377 CTLTYPE_INT, "hostid", 378 SYSCTL_DESCR("System host ID number"), 379 sysctl_kern_hostid, 0, NULL, 0, 380 CTL_KERN, KERN_HOSTID, CTL_EOL); 381 sysctl_createv(clog, 0, NULL, NULL, 382 CTLFLAG_PERMANENT, 383 CTLTYPE_STRUCT, "clockrate", 384 SYSCTL_DESCR("Kernel clock rates"), 385 sysctl_kern_clockrate, 0, NULL, 386 sizeof(struct clockinfo), 387 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 388 sysctl_createv(clog, 0, NULL, NULL, 389 CTLFLAG_PERMANENT, 390 CTLTYPE_INT, "hardclock_ticks", 391 SYSCTL_DESCR("Number of hardclock ticks"), 392 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 393 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 394 sysctl_createv(clog, 0, NULL, NULL, 395 CTLFLAG_PERMANENT, 396 CTLTYPE_STRUCT, "vnode", 397 SYSCTL_DESCR("System vnode table"), 398 sysctl_kern_vnode, 0, NULL, 0, 399 CTL_KERN, KERN_VNODE, CTL_EOL); 400 sysctl_createv(clog, 0, NULL, NULL, 401 CTLFLAG_PERMANENT, 402 CTLTYPE_STRUCT, "file", 403 SYSCTL_DESCR("System open file table"), 404 sysctl_kern_file, 0, NULL, 0, 405 CTL_KERN, KERN_FILE, CTL_EOL); 406 #ifndef GPROF 407 sysctl_createv(clog, 0, NULL, NULL, 408 CTLFLAG_PERMANENT, 409 CTLTYPE_NODE, "profiling", 410 SYSCTL_DESCR("Profiling information (not available)"), 411 sysctl_notavail, 0, NULL, 0, 412 CTL_KERN, KERN_PROF, CTL_EOL); 413 #endif 414 sysctl_createv(clog, 0, NULL, NULL, 415 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 416 CTLTYPE_INT, "posix1version", 417 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 418 "with which the operating system attempts " 419 "to comply"), 420 NULL, _POSIX_VERSION, NULL, 0, 421 CTL_KERN, KERN_POSIX1, CTL_EOL); 422 sysctl_createv(clog, 0, NULL, NULL, 423 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 424 CTLTYPE_INT, "ngroups", 425 SYSCTL_DESCR("Maximum number of supplemental groups"), 426 NULL, NGROUPS_MAX, NULL, 0, 427 CTL_KERN, KERN_NGROUPS, CTL_EOL); 428 sysctl_createv(clog, 0, NULL, NULL, 429 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 430 CTLTYPE_INT, "job_control", 431 SYSCTL_DESCR("Whether job control is available"), 432 NULL, 1, NULL, 0, 433 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 434 sysctl_createv(clog, 0, NULL, NULL, 435 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 436 CTLTYPE_INT, "saved_ids", 437 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 438 "available"), NULL, 439 #ifdef _POSIX_SAVED_IDS 440 1, 441 #else /* _POSIX_SAVED_IDS */ 442 0, 443 #endif /* _POSIX_SAVED_IDS */ 444 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 445 sysctl_createv(clog, 0, NULL, NULL, 446 CTLFLAG_PERMANENT, 447 CTLTYPE_STRUCT, "boottime", 448 SYSCTL_DESCR("System boot time"), 449 NULL, 0, &boottime, sizeof(boottime), 450 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 451 sysctl_createv(clog, 0, NULL, NULL, 452 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 453 CTLTYPE_STRING, "domainname", 454 SYSCTL_DESCR("YP domain name"), 455 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 456 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 457 sysctl_createv(clog, 0, NULL, NULL, 458 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 459 CTLTYPE_INT, "maxpartitions", 460 SYSCTL_DESCR("Maximum number of partitions allowed per " 461 "disk"), 462 NULL, MAXPARTITIONS, NULL, 0, 463 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 464 sysctl_createv(clog, 0, NULL, NULL, 465 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 466 CTLTYPE_INT, "rawpartition", 467 SYSCTL_DESCR("Raw partition of a disk"), 468 NULL, RAW_PART, NULL, 0, 469 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 470 sysctl_createv(clog, 0, NULL, NULL, 471 CTLFLAG_PERMANENT, 472 CTLTYPE_STRUCT, "timex", NULL, 473 sysctl_notavail, 0, NULL, 0, 474 CTL_KERN, KERN_TIMEX, CTL_EOL); 475 sysctl_createv(clog, 0, NULL, NULL, 476 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 477 CTLTYPE_INT, "rtc_offset", 478 SYSCTL_DESCR("Offset of real time clock from UTC in " 479 "minutes"), 480 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 481 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 482 sysctl_createv(clog, 0, NULL, NULL, 483 CTLFLAG_PERMANENT, 484 CTLTYPE_STRING, "root_device", 485 SYSCTL_DESCR("Name of the root device"), 486 sysctl_root_device, 0, NULL, 0, 487 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 488 sysctl_createv(clog, 0, NULL, NULL, 489 CTLFLAG_PERMANENT, 490 CTLTYPE_INT, "msgbufsize", 491 SYSCTL_DESCR("Size of the kernel message buffer"), 492 sysctl_msgbuf, 0, NULL, 0, 493 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 494 sysctl_createv(clog, 0, NULL, NULL, 495 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 496 CTLTYPE_INT, "fsync", 497 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 498 "Synchronization Option is available on " 499 "this system"), 500 NULL, 1, NULL, 0, 501 CTL_KERN, KERN_FSYNC, CTL_EOL); 502 sysctl_createv(clog, 0, NULL, NULL, 503 CTLFLAG_PERMANENT, 504 CTLTYPE_NODE, "ipc", 505 SYSCTL_DESCR("SysV IPC options"), 506 NULL, 0, NULL, 0, 507 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 508 sysctl_createv(clog, 0, NULL, NULL, 509 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 510 CTLTYPE_INT, "sysvmsg", 511 SYSCTL_DESCR("System V style message support available"), 512 NULL, 513 #ifdef SYSVMSG 514 1, 515 #else /* SYSVMSG */ 516 0, 517 #endif /* SYSVMSG */ 518 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 519 sysctl_createv(clog, 0, NULL, NULL, 520 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 521 CTLTYPE_INT, "sysvsem", 522 SYSCTL_DESCR("System V style semaphore support " 523 "available"), NULL, 524 #ifdef SYSVSEM 525 1, 526 #else /* SYSVSEM */ 527 0, 528 #endif /* SYSVSEM */ 529 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 530 sysctl_createv(clog, 0, NULL, NULL, 531 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 532 CTLTYPE_INT, "sysvshm", 533 SYSCTL_DESCR("System V style shared memory support " 534 "available"), NULL, 535 #ifdef SYSVSHM 536 1, 537 #else /* SYSVSHM */ 538 0, 539 #endif /* SYSVSHM */ 540 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 541 sysctl_createv(clog, 0, NULL, NULL, 542 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 543 CTLTYPE_INT, "synchronized_io", 544 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 545 "I/O Option is available on this system"), 546 NULL, 1, NULL, 0, 547 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 548 sysctl_createv(clog, 0, NULL, NULL, 549 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 550 CTLTYPE_INT, "iov_max", 551 SYSCTL_DESCR("Maximum number of iovec structures per " 552 "process"), 553 NULL, IOV_MAX, NULL, 0, 554 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 555 sysctl_createv(clog, 0, NULL, NULL, 556 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 557 CTLTYPE_INT, "mapped_files", 558 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 559 "Files Option is available on this system"), 560 NULL, 1, NULL, 0, 561 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 562 sysctl_createv(clog, 0, NULL, NULL, 563 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 564 CTLTYPE_INT, "memlock", 565 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 566 "Locking Option is available on this " 567 "system"), 568 NULL, 1, NULL, 0, 569 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 570 sysctl_createv(clog, 0, NULL, NULL, 571 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 572 CTLTYPE_INT, "memlock_range", 573 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 574 "Locking Option is available on this " 575 "system"), 576 NULL, 1, NULL, 0, 577 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 578 sysctl_createv(clog, 0, NULL, NULL, 579 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 580 CTLTYPE_INT, "memory_protection", 581 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 582 "Protection Option is available on this " 583 "system"), 584 NULL, 1, NULL, 0, 585 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 586 sysctl_createv(clog, 0, NULL, NULL, 587 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 588 CTLTYPE_INT, "login_name_max", 589 SYSCTL_DESCR("Maximum login name length"), 590 NULL, LOGIN_NAME_MAX, NULL, 0, 591 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 592 sysctl_createv(clog, 0, NULL, NULL, 593 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 594 CTLTYPE_STRING, "defcorename", 595 SYSCTL_DESCR("Default core file name"), 596 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 597 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 598 sysctl_createv(clog, 0, NULL, NULL, 599 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 600 CTLTYPE_INT, "logsigexit", 601 SYSCTL_DESCR("Log process exit when caused by signals"), 602 NULL, 0, &kern_logsigexit, 0, 603 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 604 sysctl_createv(clog, 0, NULL, NULL, 605 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 606 CTLTYPE_INT, "fscale", 607 SYSCTL_DESCR("Kernel fixed-point scale factor"), 608 NULL, FSCALE, NULL, 0, 609 CTL_KERN, KERN_FSCALE, CTL_EOL); 610 sysctl_createv(clog, 0, NULL, NULL, 611 CTLFLAG_PERMANENT, 612 CTLTYPE_INT, "ccpu", 613 SYSCTL_DESCR("Scheduler exponential decay value"), 614 NULL, 0, &ccpu, 0, 615 CTL_KERN, KERN_CCPU, CTL_EOL); 616 sysctl_createv(clog, 0, NULL, NULL, 617 CTLFLAG_PERMANENT, 618 CTLTYPE_STRUCT, "cp_time", 619 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 620 sysctl_kern_cptime, 0, NULL, 0, 621 CTL_KERN, KERN_CP_TIME, CTL_EOL); 622 sysctl_createv(clog, 0, NULL, NULL, 623 CTLFLAG_PERMANENT, 624 CTLTYPE_INT, "msgbuf", 625 SYSCTL_DESCR("Kernel message buffer"), 626 sysctl_msgbuf, 0, NULL, 0, 627 CTL_KERN, KERN_MSGBUF, CTL_EOL); 628 sysctl_createv(clog, 0, NULL, NULL, 629 CTLFLAG_PERMANENT, 630 CTLTYPE_STRUCT, "consdev", 631 SYSCTL_DESCR("Console device"), 632 sysctl_consdev, 0, NULL, sizeof(dev_t), 633 CTL_KERN, KERN_CONSDEV, CTL_EOL); 634 #if NPTY > 0 635 sysctl_createv(clog, 0, NULL, NULL, 636 CTLFLAG_PERMANENT, 637 CTLTYPE_INT, "maxptys", 638 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 639 sysctl_kern_maxptys, 0, NULL, 0, 640 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 641 #endif /* NPTY > 0 */ 642 sysctl_createv(clog, 0, NULL, NULL, 643 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 644 CTLTYPE_INT, "maxphys", 645 SYSCTL_DESCR("Maximum raw I/O transfer size"), 646 NULL, MAXPHYS, NULL, 0, 647 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 648 sysctl_createv(clog, 0, NULL, NULL, 649 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 650 CTLTYPE_INT, "sbmax", 651 SYSCTL_DESCR("Maximum socket buffer size"), 652 sysctl_kern_sbmax, 0, NULL, 0, 653 CTL_KERN, KERN_SBMAX, CTL_EOL); 654 sysctl_createv(clog, 0, NULL, NULL, 655 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 656 CTLTYPE_INT, "monotonic_clock", 657 SYSCTL_DESCR("Implementation version of the POSIX " 658 "1003.1b Monotonic Clock Option"), 659 /* XXX _POSIX_VERSION */ 660 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 661 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 662 sysctl_createv(clog, 0, NULL, NULL, 663 CTLFLAG_PERMANENT, 664 CTLTYPE_INT, "urandom", 665 SYSCTL_DESCR("Random integer value"), 666 sysctl_kern_urnd, 0, NULL, 0, 667 CTL_KERN, KERN_URND, CTL_EOL); 668 sysctl_createv(clog, 0, NULL, NULL, 669 CTLFLAG_PERMANENT, 670 CTLTYPE_INT, "arandom", 671 SYSCTL_DESCR("n bytes of random data"), 672 sysctl_kern_arnd, 0, NULL, 0, 673 CTL_KERN, KERN_ARND, CTL_EOL); 674 sysctl_createv(clog, 0, NULL, NULL, 675 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 676 CTLTYPE_INT, "labelsector", 677 SYSCTL_DESCR("Sector number containing the disklabel"), 678 NULL, LABELSECTOR, NULL, 0, 679 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 680 sysctl_createv(clog, 0, NULL, NULL, 681 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 682 CTLTYPE_INT, "labeloffset", 683 SYSCTL_DESCR("Offset of the disklabel within the " 684 "sector"), 685 NULL, LABELOFFSET, NULL, 0, 686 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 687 sysctl_createv(clog, 0, NULL, NULL, 688 CTLFLAG_PERMANENT, 689 CTLTYPE_NODE, "lwp", 690 SYSCTL_DESCR("System-wide LWP information"), 691 sysctl_kern_lwp, 0, NULL, 0, 692 CTL_KERN, KERN_LWP, CTL_EOL); 693 sysctl_createv(clog, 0, NULL, NULL, 694 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 695 CTLTYPE_INT, "forkfsleep", 696 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 697 "to process limits"), 698 sysctl_kern_forkfsleep, 0, NULL, 0, 699 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 700 sysctl_createv(clog, 0, NULL, NULL, 701 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 702 CTLTYPE_INT, "posix_threads", 703 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 704 "Threads option to which the system " 705 "attempts to conform"), 706 /* XXX _POSIX_VERSION */ 707 NULL, _POSIX_THREADS, NULL, 0, 708 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 709 sysctl_createv(clog, 0, NULL, NULL, 710 CTLFLAG_PERMANENT, 711 CTLTYPE_INT, "posix_semaphores", 712 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 713 "Semaphores option to which the system " 714 "attempts to conform"), NULL, 715 0, &posix_semaphores, 716 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 717 sysctl_createv(clog, 0, NULL, NULL, 718 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 719 CTLTYPE_INT, "posix_barriers", 720 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 721 "Barriers option to which the system " 722 "attempts to conform"), 723 /* XXX _POSIX_VERSION */ 724 NULL, _POSIX_BARRIERS, NULL, 0, 725 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 726 sysctl_createv(clog, 0, NULL, NULL, 727 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 728 CTLTYPE_INT, "posix_timers", 729 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 730 "Timers option to which the system " 731 "attempts to conform"), 732 /* XXX _POSIX_VERSION */ 733 NULL, _POSIX_TIMERS, NULL, 0, 734 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 735 sysctl_createv(clog, 0, NULL, NULL, 736 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 737 CTLTYPE_INT, "posix_spin_locks", 738 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 739 "Locks option to which the system attempts " 740 "to conform"), 741 /* XXX _POSIX_VERSION */ 742 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 743 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 744 sysctl_createv(clog, 0, NULL, NULL, 745 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 746 CTLTYPE_INT, "posix_reader_writer_locks", 747 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 748 "Read-Write Locks option to which the " 749 "system attempts to conform"), 750 /* XXX _POSIX_VERSION */ 751 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 752 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 753 sysctl_createv(clog, 0, NULL, NULL, 754 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 755 CTLTYPE_INT, "dump_on_panic", 756 SYSCTL_DESCR("Perform a crash dump on system panic"), 757 NULL, 0, &dumponpanic, 0, 758 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 759 #ifdef DIAGNOSTIC 760 sysctl_createv(clog, 0, NULL, NULL, 761 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 762 CTLTYPE_INT, "panic_now", 763 SYSCTL_DESCR("Trigger a panic"), 764 sysctl_kern_trigger_panic, 0, NULL, 0, 765 CTL_KERN, CTL_CREATE, CTL_EOL); 766 #endif 767 sysctl_createv(clog, 0, NULL, NULL, 768 CTLFLAG_PERMANENT, 769 CTLTYPE_INT, "root_partition", 770 SYSCTL_DESCR("Root partition on the root device"), 771 sysctl_kern_root_partition, 0, NULL, 0, 772 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 773 sysctl_createv(clog, 0, NULL, NULL, 774 CTLFLAG_PERMANENT, 775 CTLTYPE_STRUCT, "drivers", 776 SYSCTL_DESCR("List of all drivers with block and " 777 "character device numbers"), 778 sysctl_kern_drivers, 0, NULL, 0, 779 CTL_KERN, KERN_DRIVERS, CTL_EOL); 780 sysctl_createv(clog, 0, NULL, NULL, 781 CTLFLAG_PERMANENT, 782 CTLTYPE_STRUCT, "file2", 783 SYSCTL_DESCR("System open file table"), 784 sysctl_kern_file2, 0, NULL, 0, 785 CTL_KERN, KERN_FILE2, CTL_EOL); 786 sysctl_createv(clog, 0, NULL, NULL, 787 CTLFLAG_PERMANENT, 788 CTLTYPE_STRUCT, "cp_id", 789 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 790 sysctl_kern_cpid, 0, NULL, 0, 791 CTL_KERN, KERN_CP_ID, CTL_EOL); 792 sysctl_createv(clog, 0, NULL, &rnode, 793 CTLFLAG_PERMANENT, 794 CTLTYPE_NODE, "coredump", 795 SYSCTL_DESCR("Coredump settings."), 796 NULL, 0, NULL, 0, 797 CTL_KERN, CTL_CREATE, CTL_EOL); 798 sysctl_createv(clog, 0, &rnode, &rnode, 799 CTLFLAG_PERMANENT, 800 CTLTYPE_NODE, "setid", 801 SYSCTL_DESCR("Set-id processes' coredump settings."), 802 NULL, 0, NULL, 0, 803 CTL_CREATE, CTL_EOL); 804 sysctl_createv(clog, 0, &rnode, NULL, 805 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 806 CTLTYPE_INT, "dump", 807 SYSCTL_DESCR("Allow set-id processes to dump core."), 808 sysctl_security_setidcore, 0, &security_setidcore_dump, 809 sizeof(security_setidcore_dump), 810 CTL_CREATE, CTL_EOL); 811 sysctl_createv(clog, 0, &rnode, NULL, 812 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 813 CTLTYPE_STRING, "path", 814 SYSCTL_DESCR("Path pattern for set-id coredumps."), 815 sysctl_security_setidcorename, 0, 816 &security_setidcore_path, 817 sizeof(security_setidcore_path), 818 CTL_CREATE, CTL_EOL); 819 sysctl_createv(clog, 0, &rnode, NULL, 820 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 821 CTLTYPE_INT, "owner", 822 SYSCTL_DESCR("Owner id for set-id processes' cores."), 823 sysctl_security_setidcore, 0, &security_setidcore_owner, 824 0, 825 CTL_CREATE, CTL_EOL); 826 sysctl_createv(clog, 0, &rnode, NULL, 827 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 828 CTLTYPE_INT, "group", 829 SYSCTL_DESCR("Group id for set-id processes' cores."), 830 sysctl_security_setidcore, 0, &security_setidcore_group, 831 0, 832 CTL_CREATE, CTL_EOL); 833 sysctl_createv(clog, 0, &rnode, NULL, 834 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 835 CTLTYPE_INT, "mode", 836 SYSCTL_DESCR("Mode for set-id processes' cores."), 837 sysctl_security_setidcore, 0, &security_setidcore_mode, 838 0, 839 CTL_CREATE, CTL_EOL); 840 #ifdef KERN_SA 841 sysctl_createv(clog, 0, NULL, NULL, 842 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 843 CTLTYPE_INT, "no_sa_support", 844 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 845 NULL, 0, &sa_system_disabled, 0, 846 CTL_KERN, CTL_CREATE, CTL_EOL); 847 #else 848 sysctl_createv(clog, 0, NULL, NULL, 849 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 850 CTLTYPE_INT, "no_sa_support", 851 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 852 NULL, 1, NULL, 0, 853 CTL_KERN, CTL_CREATE, CTL_EOL); 854 #endif 855 856 /* kern.posix. */ 857 sysctl_createv(clog, 0, NULL, &rnode, 858 CTLFLAG_PERMANENT, 859 CTLTYPE_NODE, "posix", 860 SYSCTL_DESCR("POSIX options"), 861 NULL, 0, NULL, 0, 862 CTL_KERN, CTL_CREATE, CTL_EOL); 863 sysctl_createv(clog, 0, &rnode, NULL, 864 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 865 CTLTYPE_INT, "semmax", 866 SYSCTL_DESCR("Maximal number of semaphores"), 867 NULL, 0, &ksem_max, 0, 868 CTL_CREATE, CTL_EOL); 869 } 870 871 SYSCTL_SETUP(sysctl_kern_proc_setup, 872 "sysctl kern.proc/proc2/proc_args subtree setup") 873 { 874 875 sysctl_createv(clog, 0, NULL, NULL, 876 CTLFLAG_PERMANENT, 877 CTLTYPE_NODE, "kern", NULL, 878 NULL, 0, NULL, 0, 879 CTL_KERN, CTL_EOL); 880 881 sysctl_createv(clog, 0, NULL, NULL, 882 CTLFLAG_PERMANENT, 883 CTLTYPE_NODE, "proc", 884 SYSCTL_DESCR("System-wide process information"), 885 sysctl_doeproc, 0, NULL, 0, 886 CTL_KERN, KERN_PROC, CTL_EOL); 887 sysctl_createv(clog, 0, NULL, NULL, 888 CTLFLAG_PERMANENT, 889 CTLTYPE_NODE, "proc2", 890 SYSCTL_DESCR("Machine-independent process information"), 891 sysctl_doeproc, 0, NULL, 0, 892 CTL_KERN, KERN_PROC2, CTL_EOL); 893 sysctl_createv(clog, 0, NULL, NULL, 894 CTLFLAG_PERMANENT, 895 CTLTYPE_NODE, "proc_args", 896 SYSCTL_DESCR("Process argument information"), 897 sysctl_kern_proc_args, 0, NULL, 0, 898 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 899 900 /* 901 "nodes" under these: 902 903 KERN_PROC_ALL 904 KERN_PROC_PID pid 905 KERN_PROC_PGRP pgrp 906 KERN_PROC_SESSION sess 907 KERN_PROC_TTY tty 908 KERN_PROC_UID uid 909 KERN_PROC_RUID uid 910 KERN_PROC_GID gid 911 KERN_PROC_RGID gid 912 913 all in all, probably not worth the effort... 914 */ 915 } 916 917 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 918 { 919 u_int u; 920 u_quad_t q; 921 922 sysctl_createv(clog, 0, NULL, NULL, 923 CTLFLAG_PERMANENT, 924 CTLTYPE_NODE, "hw", NULL, 925 NULL, 0, NULL, 0, 926 CTL_HW, CTL_EOL); 927 928 sysctl_createv(clog, 0, NULL, NULL, 929 CTLFLAG_PERMANENT, 930 CTLTYPE_STRING, "machine", 931 SYSCTL_DESCR("Machine class"), 932 NULL, 0, machine, 0, 933 CTL_HW, HW_MACHINE, CTL_EOL); 934 sysctl_createv(clog, 0, NULL, NULL, 935 CTLFLAG_PERMANENT, 936 CTLTYPE_STRING, "model", 937 SYSCTL_DESCR("Machine model"), 938 NULL, 0, cpu_model, 0, 939 CTL_HW, HW_MODEL, CTL_EOL); 940 sysctl_createv(clog, 0, NULL, NULL, 941 CTLFLAG_PERMANENT, 942 CTLTYPE_INT, "ncpu", 943 SYSCTL_DESCR("Number of CPUs configured"), 944 NULL, 0, &ncpu, 0, 945 CTL_HW, HW_NCPU, CTL_EOL); 946 sysctl_createv(clog, 0, NULL, NULL, 947 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 948 CTLTYPE_INT, "byteorder", 949 SYSCTL_DESCR("System byte order"), 950 NULL, BYTE_ORDER, NULL, 0, 951 CTL_HW, HW_BYTEORDER, CTL_EOL); 952 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 953 UINT_MAX : physmem * PAGE_SIZE; 954 sysctl_createv(clog, 0, NULL, NULL, 955 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 956 CTLTYPE_INT, "physmem", 957 SYSCTL_DESCR("Bytes of physical memory"), 958 NULL, u, NULL, 0, 959 CTL_HW, HW_PHYSMEM, CTL_EOL); 960 sysctl_createv(clog, 0, NULL, NULL, 961 CTLFLAG_PERMANENT, 962 CTLTYPE_INT, "usermem", 963 SYSCTL_DESCR("Bytes of non-kernel memory"), 964 sysctl_hw_usermem, 0, NULL, 0, 965 CTL_HW, HW_USERMEM, CTL_EOL); 966 sysctl_createv(clog, 0, NULL, NULL, 967 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 968 CTLTYPE_INT, "pagesize", 969 SYSCTL_DESCR("Software page size"), 970 NULL, PAGE_SIZE, NULL, 0, 971 CTL_HW, HW_PAGESIZE, CTL_EOL); 972 sysctl_createv(clog, 0, NULL, NULL, 973 CTLFLAG_PERMANENT, 974 CTLTYPE_STRING, "machine_arch", 975 SYSCTL_DESCR("Machine CPU class"), 976 NULL, 0, machine_arch, 0, 977 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 978 sysctl_createv(clog, 0, NULL, NULL, 979 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 980 CTLTYPE_INT, "alignbytes", 981 SYSCTL_DESCR("Alignment constraint for all possible " 982 "data types"), 983 NULL, ALIGNBYTES, NULL, 0, 984 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 985 sysctl_createv(clog, 0, NULL, NULL, 986 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 987 CTLTYPE_STRING, "cnmagic", 988 SYSCTL_DESCR("Console magic key sequence"), 989 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 990 CTL_HW, HW_CNMAGIC, CTL_EOL); 991 q = (u_quad_t)physmem * PAGE_SIZE; 992 sysctl_createv(clog, 0, NULL, NULL, 993 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 994 CTLTYPE_QUAD, "physmem64", 995 SYSCTL_DESCR("Bytes of physical memory"), 996 NULL, q, NULL, 0, 997 CTL_HW, HW_PHYSMEM64, CTL_EOL); 998 sysctl_createv(clog, 0, NULL, NULL, 999 CTLFLAG_PERMANENT, 1000 CTLTYPE_QUAD, "usermem64", 1001 SYSCTL_DESCR("Bytes of non-kernel memory"), 1002 sysctl_hw_usermem, 0, NULL, 0, 1003 CTL_HW, HW_USERMEM64, CTL_EOL); 1004 sysctl_createv(clog, 0, NULL, NULL, 1005 CTLFLAG_PERMANENT, 1006 CTLTYPE_INT, "ncpuonline", 1007 SYSCTL_DESCR("Number of CPUs online"), 1008 NULL, 0, &ncpuonline, 0, 1009 CTL_HW, HW_NCPUONLINE, CTL_EOL); 1010 } 1011 1012 #ifdef DEBUG 1013 /* 1014 * Debugging related system variables. 1015 */ 1016 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 1017 struct ctldebug debug5, debug6, debug7, debug8, debug9; 1018 struct ctldebug debug10, debug11, debug12, debug13, debug14; 1019 struct ctldebug debug15, debug16, debug17, debug18, debug19; 1020 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 1021 &debug0, &debug1, &debug2, &debug3, &debug4, 1022 &debug5, &debug6, &debug7, &debug8, &debug9, 1023 &debug10, &debug11, &debug12, &debug13, &debug14, 1024 &debug15, &debug16, &debug17, &debug18, &debug19, 1025 }; 1026 1027 /* 1028 * this setup routine is a replacement for debug_sysctl() 1029 * 1030 * note that it creates several nodes per defined debug variable 1031 */ 1032 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 1033 { 1034 struct ctldebug *cdp; 1035 char nodename[20]; 1036 int i; 1037 1038 /* 1039 * two ways here: 1040 * 1041 * the "old" way (debug.name -> value) which was emulated by 1042 * the sysctl(8) binary 1043 * 1044 * the new way, which the sysctl(8) binary was actually using 1045 1046 node debug 1047 node debug.0 1048 string debug.0.name 1049 int debug.0.value 1050 int debug.name 1051 1052 */ 1053 1054 sysctl_createv(clog, 0, NULL, NULL, 1055 CTLFLAG_PERMANENT, 1056 CTLTYPE_NODE, "debug", NULL, 1057 NULL, 0, NULL, 0, 1058 CTL_DEBUG, CTL_EOL); 1059 1060 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 1061 cdp = debugvars[i]; 1062 if (cdp->debugname == NULL || cdp->debugvar == NULL) 1063 continue; 1064 1065 snprintf(nodename, sizeof(nodename), "debug%d", i); 1066 sysctl_createv(clog, 0, NULL, NULL, 1067 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1068 CTLTYPE_NODE, nodename, NULL, 1069 NULL, 0, NULL, 0, 1070 CTL_DEBUG, i, CTL_EOL); 1071 sysctl_createv(clog, 0, NULL, NULL, 1072 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1073 CTLTYPE_STRING, "name", NULL, 1074 /*XXXUNCONST*/ 1075 NULL, 0, __UNCONST(cdp->debugname), 0, 1076 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 1077 sysctl_createv(clog, 0, NULL, NULL, 1078 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1079 CTLTYPE_INT, "value", NULL, 1080 NULL, 0, cdp->debugvar, 0, 1081 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 1082 sysctl_createv(clog, 0, NULL, NULL, 1083 CTLFLAG_PERMANENT, 1084 CTLTYPE_INT, cdp->debugname, NULL, 1085 NULL, 0, cdp->debugvar, 0, 1086 CTL_DEBUG, CTL_CREATE, CTL_EOL); 1087 } 1088 } 1089 #endif /* DEBUG */ 1090 1091 /* 1092 * ******************************************************************** 1093 * section 2: private node-specific helper routines. 1094 * ******************************************************************** 1095 */ 1096 1097 #ifdef DIAGNOSTIC 1098 static int 1099 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 1100 { 1101 int newtrig, error; 1102 struct sysctlnode node; 1103 1104 newtrig = 0; 1105 node = *rnode; 1106 node.sysctl_data = &newtrig; 1107 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1108 if (error || newp == NULL) 1109 return (error); 1110 1111 if (newtrig != 0) 1112 panic("Panic triggered"); 1113 1114 return (error); 1115 } 1116 #endif 1117 1118 /* 1119 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 1120 * new value is lower than desiredvnodes and then calls reinit 1121 * routines that needs to adjust to the new value. 1122 */ 1123 static int 1124 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 1125 { 1126 int error, new_vnodes, old_vnodes, new_max; 1127 struct sysctlnode node; 1128 1129 new_vnodes = desiredvnodes; 1130 node = *rnode; 1131 node.sysctl_data = &new_vnodes; 1132 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1133 if (error || newp == NULL) 1134 return (error); 1135 1136 /* Limits: 75% of KVA and physical memory. */ 1137 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 1138 if (new_vnodes > new_max) 1139 new_vnodes = new_max; 1140 1141 old_vnodes = desiredvnodes; 1142 desiredvnodes = new_vnodes; 1143 if (new_vnodes < old_vnodes) { 1144 error = vfs_drainvnodes(new_vnodes, l); 1145 if (error) { 1146 desiredvnodes = old_vnodes; 1147 return (error); 1148 } 1149 } 1150 vfs_reinit(); 1151 nchreinit(); 1152 1153 return (0); 1154 } 1155 1156 /* 1157 * sysctl helper routine for rtc_offset - set time after changes 1158 */ 1159 static int 1160 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1161 { 1162 struct timespec ts, delta; 1163 int error, new_rtc_offset; 1164 struct sysctlnode node; 1165 1166 new_rtc_offset = rtc_offset; 1167 node = *rnode; 1168 node.sysctl_data = &new_rtc_offset; 1169 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1170 if (error || newp == NULL) 1171 return (error); 1172 1173 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1174 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1175 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1176 return (EPERM); 1177 if (rtc_offset == new_rtc_offset) 1178 return (0); 1179 1180 /* if we change the offset, adjust the time */ 1181 nanotime(&ts); 1182 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1183 delta.tv_nsec = 0; 1184 timespecadd(&ts, &delta, &ts); 1185 rtc_offset = new_rtc_offset; 1186 return (settime(l->l_proc, &ts)); 1187 } 1188 1189 /* 1190 * sysctl helper routine for kern.maxproc. Ensures that the new 1191 * values are not too low or too high. 1192 */ 1193 static int 1194 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1195 { 1196 int error, nmaxproc; 1197 struct sysctlnode node; 1198 1199 nmaxproc = maxproc; 1200 node = *rnode; 1201 node.sysctl_data = &nmaxproc; 1202 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1203 if (error || newp == NULL) 1204 return (error); 1205 1206 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1207 return (EINVAL); 1208 #ifdef __HAVE_CPU_MAXPROC 1209 if (nmaxproc > cpu_maxproc()) 1210 return (EINVAL); 1211 #endif 1212 maxproc = nmaxproc; 1213 1214 return (0); 1215 } 1216 1217 /* 1218 * sysctl helper function for kern.hostid. The hostid is a long, but 1219 * we export it as an int, so we need to give it a little help. 1220 */ 1221 static int 1222 sysctl_kern_hostid(SYSCTLFN_ARGS) 1223 { 1224 int error, inthostid; 1225 struct sysctlnode node; 1226 1227 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1228 node = *rnode; 1229 node.sysctl_data = &inthostid; 1230 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1231 if (error || newp == NULL) 1232 return (error); 1233 1234 hostid = (unsigned)inthostid; 1235 1236 return (0); 1237 } 1238 1239 /* 1240 * sysctl helper function for kern.hostname and kern.domainnname. 1241 * resets the relevant recorded length when the underlying name is 1242 * changed. 1243 */ 1244 static int 1245 sysctl_setlen(SYSCTLFN_ARGS) 1246 { 1247 int error; 1248 1249 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1250 if (error || newp == NULL) 1251 return (error); 1252 1253 switch (rnode->sysctl_num) { 1254 case KERN_HOSTNAME: 1255 hostnamelen = strlen((const char*)rnode->sysctl_data); 1256 break; 1257 case KERN_DOMAINNAME: 1258 domainnamelen = strlen((const char*)rnode->sysctl_data); 1259 break; 1260 } 1261 1262 return (0); 1263 } 1264 1265 /* 1266 * sysctl helper routine for kern.clockrate. Assembles a struct on 1267 * the fly to be returned to the caller. 1268 */ 1269 static int 1270 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1271 { 1272 struct clockinfo clkinfo; 1273 struct sysctlnode node; 1274 1275 clkinfo.tick = tick; 1276 clkinfo.tickadj = tickadj; 1277 clkinfo.hz = hz; 1278 clkinfo.profhz = profhz; 1279 clkinfo.stathz = stathz ? stathz : hz; 1280 1281 node = *rnode; 1282 node.sysctl_data = &clkinfo; 1283 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1284 } 1285 1286 1287 /* 1288 * sysctl helper routine for kern.file pseudo-subtree. 1289 */ 1290 static int 1291 sysctl_kern_file(SYSCTLFN_ARGS) 1292 { 1293 int error; 1294 size_t buflen; 1295 struct file *fp, *dp, *np, fbuf; 1296 char *start, *where; 1297 1298 start = where = oldp; 1299 buflen = *oldlenp; 1300 dp = NULL; 1301 1302 if (where == NULL) { 1303 /* 1304 * overestimate by 10 files 1305 */ 1306 *oldlenp = sizeof(filehead) + (nfiles + 10) * 1307 sizeof(struct file); 1308 return (0); 1309 } 1310 1311 /* 1312 * first dcopyout filehead 1313 */ 1314 if (buflen < sizeof(filehead)) { 1315 *oldlenp = 0; 1316 return (0); 1317 } 1318 sysctl_unlock(); 1319 error = dcopyout(l, &filehead, where, sizeof(filehead)); 1320 if (error) { 1321 sysctl_relock(); 1322 return error; 1323 } 1324 buflen -= sizeof(filehead); 1325 where += sizeof(filehead); 1326 1327 /* 1328 * allocate dummy file descriptor to make position in list 1329 */ 1330 if ((dp = fgetdummy()) == NULL) { 1331 sysctl_relock(); 1332 return ENOMEM; 1333 } 1334 1335 /* 1336 * followed by an array of file structures 1337 */ 1338 mutex_enter(&filelist_lock); 1339 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1340 np = LIST_NEXT(fp, f_list); 1341 mutex_enter(&fp->f_lock); 1342 if (fp->f_count == 0) { 1343 mutex_exit(&fp->f_lock); 1344 continue; 1345 } 1346 /* 1347 * XXX Need to prevent that from being an alternative way 1348 * XXX to getting process information. 1349 */ 1350 if (kauth_authorize_generic(l->l_cred, 1351 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 1352 mutex_exit(&fp->f_lock); 1353 continue; 1354 } 1355 if (buflen < sizeof(struct file)) { 1356 *oldlenp = where - start; 1357 mutex_exit(&fp->f_lock); 1358 error = ENOMEM; 1359 break; 1360 } 1361 memcpy(&fbuf, fp, sizeof(fbuf)); 1362 LIST_INSERT_AFTER(fp, dp, f_list); 1363 mutex_exit(&fp->f_lock); 1364 mutex_exit(&filelist_lock); 1365 error = dcopyout(l, &fbuf, where, sizeof(fbuf)); 1366 if (error) { 1367 mutex_enter(&filelist_lock); 1368 LIST_REMOVE(dp, f_list); 1369 break; 1370 } 1371 buflen -= sizeof(struct file); 1372 where += sizeof(struct file); 1373 mutex_enter(&filelist_lock); 1374 np = LIST_NEXT(dp, f_list); 1375 LIST_REMOVE(dp, f_list); 1376 } 1377 mutex_exit(&filelist_lock); 1378 *oldlenp = where - start; 1379 if (dp != NULL) 1380 fputdummy(dp); 1381 sysctl_relock(); 1382 return (error); 1383 } 1384 1385 /* 1386 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1387 * former it merely checks the message buffer is set up. For the latter, 1388 * it also copies out the data if necessary. 1389 */ 1390 static int 1391 sysctl_msgbuf(SYSCTLFN_ARGS) 1392 { 1393 char *where = oldp; 1394 size_t len, maxlen; 1395 long beg, end; 1396 extern kmutex_t log_lock; 1397 int error; 1398 1399 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1400 msgbufenabled = 0; 1401 return (ENXIO); 1402 } 1403 1404 switch (rnode->sysctl_num) { 1405 case KERN_MSGBUFSIZE: { 1406 struct sysctlnode node = *rnode; 1407 int msg_bufs = (int)msgbufp->msg_bufs; 1408 node.sysctl_data = &msg_bufs; 1409 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1410 } 1411 case KERN_MSGBUF: 1412 break; 1413 default: 1414 return (EOPNOTSUPP); 1415 } 1416 1417 if (newp != NULL) 1418 return (EPERM); 1419 1420 if (oldp == NULL) { 1421 /* always return full buffer size */ 1422 *oldlenp = msgbufp->msg_bufs; 1423 return (0); 1424 } 1425 1426 sysctl_unlock(); 1427 1428 /* 1429 * First, copy from the write pointer to the end of 1430 * message buffer. 1431 */ 1432 error = 0; 1433 mutex_spin_enter(&log_lock); 1434 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1435 beg = msgbufp->msg_bufx; 1436 end = msgbufp->msg_bufs; 1437 mutex_spin_exit(&log_lock); 1438 1439 while (maxlen > 0) { 1440 len = MIN(end - beg, maxlen); 1441 if (len == 0) 1442 break; 1443 /* XXX unlocked, but hardly matters. */ 1444 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1445 if (error) 1446 break; 1447 where += len; 1448 maxlen -= len; 1449 1450 /* 1451 * ... then, copy from the beginning of message buffer to 1452 * the write pointer. 1453 */ 1454 beg = 0; 1455 end = msgbufp->msg_bufx; 1456 } 1457 1458 sysctl_relock(); 1459 return (error); 1460 } 1461 1462 /* 1463 * sysctl helper routine for kern.defcorename. In the case of a new 1464 * string being assigned, check that it's not a zero-length string. 1465 * (XXX the check in -current doesn't work, but do we really care?) 1466 */ 1467 static int 1468 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1469 { 1470 int error; 1471 char *newcorename; 1472 struct sysctlnode node; 1473 1474 newcorename = PNBUF_GET(); 1475 node = *rnode; 1476 node.sysctl_data = &newcorename[0]; 1477 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1478 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1479 if (error || newp == NULL) { 1480 goto done; 1481 } 1482 1483 /* 1484 * when sysctl_lookup() deals with a string, it's guaranteed 1485 * to come back nul terminated. So there. :) 1486 */ 1487 if (strlen(newcorename) == 0) { 1488 error = EINVAL; 1489 } else { 1490 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1491 error = 0; 1492 } 1493 done: 1494 PNBUF_PUT(newcorename); 1495 return error; 1496 } 1497 1498 /* 1499 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1500 * across all cpus. 1501 */ 1502 static int 1503 sysctl_kern_cptime(SYSCTLFN_ARGS) 1504 { 1505 struct sysctlnode node = *rnode; 1506 uint64_t *cp_time = NULL; 1507 int error, n = ncpu, i; 1508 struct cpu_info *ci; 1509 CPU_INFO_ITERATOR cii; 1510 1511 /* 1512 * if you specifically pass a buffer that is the size of the 1513 * sum, or if you are probing for the size, you get the "sum" 1514 * of cp_time (and the size thereof) across all processors. 1515 * 1516 * alternately, you can pass an additional mib number and get 1517 * cp_time for that particular processor. 1518 */ 1519 switch (namelen) { 1520 case 0: 1521 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1522 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1523 n = -1; /* SUM */ 1524 } 1525 else { 1526 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1527 n = -2; /* ALL */ 1528 } 1529 break; 1530 case 1: 1531 if (name[0] < 0 || name[0] >= n) 1532 return (ENOENT); /* ENOSUCHPROCESSOR */ 1533 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1534 n = name[0]; 1535 /* 1536 * adjust these so that sysctl_lookup() will be happy 1537 */ 1538 name++; 1539 namelen--; 1540 break; 1541 default: 1542 return (EINVAL); 1543 } 1544 1545 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1546 if (cp_time == NULL) 1547 return (ENOMEM); 1548 node.sysctl_data = cp_time; 1549 memset(cp_time, 0, node.sysctl_size); 1550 1551 for (CPU_INFO_FOREACH(cii, ci)) { 1552 if (n <= 0) { 1553 for (i = 0; i < CPUSTATES; i++) { 1554 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1555 } 1556 } 1557 /* 1558 * if a specific processor was requested and we just 1559 * did it, we're done here 1560 */ 1561 if (n == 0) 1562 break; 1563 /* 1564 * if doing "all", skip to next cp_time set for next processor 1565 */ 1566 if (n == -2) 1567 cp_time += CPUSTATES; 1568 /* 1569 * if we're doing a specific processor, we're one 1570 * processor closer 1571 */ 1572 if (n > 0) 1573 n--; 1574 } 1575 1576 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1577 kmem_free(node.sysctl_data, node.sysctl_size); 1578 return (error); 1579 } 1580 1581 #if NPTY > 0 1582 /* 1583 * sysctl helper routine for kern.maxptys. Ensures that any new value 1584 * is acceptable to the pty subsystem. 1585 */ 1586 static int 1587 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1588 { 1589 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1590 int error, xmax; 1591 struct sysctlnode node; 1592 1593 /* get current value of maxptys */ 1594 xmax = pty_maxptys(0, 0); 1595 1596 node = *rnode; 1597 node.sysctl_data = &xmax; 1598 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1599 if (error || newp == NULL) 1600 return (error); 1601 1602 if (xmax != pty_maxptys(xmax, 1)) 1603 return (EINVAL); 1604 1605 return (0); 1606 } 1607 #endif /* NPTY > 0 */ 1608 1609 /* 1610 * sysctl helper routine for kern.sbmax. Basically just ensures that 1611 * any new value is not too small. 1612 */ 1613 static int 1614 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1615 { 1616 int error, new_sbmax; 1617 struct sysctlnode node; 1618 1619 new_sbmax = sb_max; 1620 node = *rnode; 1621 node.sysctl_data = &new_sbmax; 1622 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1623 if (error || newp == NULL) 1624 return (error); 1625 1626 KERNEL_LOCK(1, NULL); 1627 error = sb_max_set(new_sbmax); 1628 KERNEL_UNLOCK_ONE(NULL); 1629 1630 return (error); 1631 } 1632 1633 /* 1634 * sysctl helper routine for kern.urandom node. Picks a random number 1635 * for you. 1636 */ 1637 static int 1638 sysctl_kern_urnd(SYSCTLFN_ARGS) 1639 { 1640 #if NRND > 0 1641 int v, rv; 1642 1643 KERNEL_LOCK(1, NULL); 1644 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1645 KERNEL_UNLOCK_ONE(NULL); 1646 if (rv == sizeof(v)) { 1647 struct sysctlnode node = *rnode; 1648 node.sysctl_data = &v; 1649 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1650 } 1651 else 1652 return (EIO); /*XXX*/ 1653 #else 1654 return (EOPNOTSUPP); 1655 #endif 1656 } 1657 1658 /* 1659 * sysctl helper routine for kern.arandom node. Picks a random number 1660 * for you. 1661 */ 1662 static int 1663 sysctl_kern_arnd(SYSCTLFN_ARGS) 1664 { 1665 #if NRND > 0 1666 int error; 1667 void *v; 1668 struct sysctlnode node = *rnode; 1669 1670 if (*oldlenp == 0) 1671 return 0; 1672 if (*oldlenp > 8192) 1673 return E2BIG; 1674 1675 v = kmem_alloc(*oldlenp, KM_SLEEP); 1676 arc4randbytes(v, *oldlenp); 1677 node.sysctl_data = v; 1678 node.sysctl_size = *oldlenp; 1679 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1680 kmem_free(v, *oldlenp); 1681 return error; 1682 #else 1683 return (EOPNOTSUPP); 1684 #endif 1685 } 1686 /* 1687 * sysctl helper routine to do kern.lwp.* work. 1688 */ 1689 static int 1690 sysctl_kern_lwp(SYSCTLFN_ARGS) 1691 { 1692 struct kinfo_lwp klwp; 1693 struct proc *p; 1694 struct lwp *l2, *l3; 1695 char *where, *dp; 1696 int pid, elem_size, elem_count; 1697 int buflen, needed, error; 1698 bool gotit; 1699 1700 if (namelen == 1 && name[0] == CTL_QUERY) 1701 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1702 1703 dp = where = oldp; 1704 buflen = where != NULL ? *oldlenp : 0; 1705 error = needed = 0; 1706 1707 if (newp != NULL || namelen != 3) 1708 return (EINVAL); 1709 pid = name[0]; 1710 elem_size = name[1]; 1711 elem_count = name[2]; 1712 1713 sysctl_unlock(); 1714 if (pid == -1) { 1715 mutex_enter(proc_lock); 1716 LIST_FOREACH(p, &allproc, p_list) { 1717 /* Grab a hold on the process. */ 1718 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1719 continue; 1720 } 1721 mutex_exit(proc_lock); 1722 1723 mutex_enter(p->p_lock); 1724 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1725 if (buflen >= elem_size && elem_count > 0) { 1726 lwp_lock(l2); 1727 fill_lwp(l2, &klwp); 1728 lwp_unlock(l2); 1729 mutex_exit(p->p_lock); 1730 1731 /* 1732 * Copy out elem_size, but not 1733 * larger than the size of a 1734 * struct kinfo_proc2. 1735 */ 1736 error = dcopyout(l, &klwp, dp, 1737 min(sizeof(klwp), elem_size)); 1738 if (error) { 1739 rw_exit(&p->p_reflock); 1740 goto cleanup; 1741 } 1742 mutex_enter(p->p_lock); 1743 LIST_FOREACH(l3, &p->p_lwps, 1744 l_sibling) { 1745 if (l2 == l3) 1746 break; 1747 } 1748 if (l3 == NULL) { 1749 mutex_exit(p->p_lock); 1750 rw_exit(&p->p_reflock); 1751 error = EAGAIN; 1752 goto cleanup; 1753 } 1754 dp += elem_size; 1755 buflen -= elem_size; 1756 elem_count--; 1757 } 1758 needed += elem_size; 1759 } 1760 mutex_exit(p->p_lock); 1761 1762 /* Drop reference to process. */ 1763 mutex_enter(proc_lock); 1764 rw_exit(&p->p_reflock); 1765 } 1766 mutex_exit(proc_lock); 1767 } else { 1768 mutex_enter(proc_lock); 1769 p = p_find(pid, PFIND_LOCKED); 1770 if (p == NULL) { 1771 error = ESRCH; 1772 mutex_exit(proc_lock); 1773 goto cleanup; 1774 } 1775 /* Grab a hold on the process. */ 1776 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1777 mutex_exit(proc_lock); 1778 if (!gotit) { 1779 error = ESRCH; 1780 goto cleanup; 1781 } 1782 1783 mutex_enter(p->p_lock); 1784 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1785 if (buflen >= elem_size && elem_count > 0) { 1786 lwp_lock(l2); 1787 fill_lwp(l2, &klwp); 1788 lwp_unlock(l2); 1789 mutex_exit(p->p_lock); 1790 /* 1791 * Copy out elem_size, but not larger than 1792 * the size of a struct kinfo_proc2. 1793 */ 1794 error = dcopyout(l, &klwp, dp, 1795 min(sizeof(klwp), elem_size)); 1796 if (error) { 1797 rw_exit(&p->p_reflock); 1798 goto cleanup; 1799 } 1800 mutex_enter(p->p_lock); 1801 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1802 if (l2 == l3) 1803 break; 1804 } 1805 if (l3 == NULL) { 1806 mutex_exit(p->p_lock); 1807 rw_exit(&p->p_reflock); 1808 error = EAGAIN; 1809 goto cleanup; 1810 } 1811 dp += elem_size; 1812 buflen -= elem_size; 1813 elem_count--; 1814 } 1815 needed += elem_size; 1816 } 1817 mutex_exit(p->p_lock); 1818 1819 /* Drop reference to process. */ 1820 rw_exit(&p->p_reflock); 1821 } 1822 1823 if (where != NULL) { 1824 *oldlenp = dp - where; 1825 if (needed > *oldlenp) { 1826 sysctl_relock(); 1827 return (ENOMEM); 1828 } 1829 } else { 1830 needed += KERN_LWPSLOP; 1831 *oldlenp = needed; 1832 } 1833 error = 0; 1834 cleanup: 1835 sysctl_relock(); 1836 return (error); 1837 } 1838 1839 /* 1840 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1841 * given value is not too large or two small, and is at least one 1842 * timer tick if not zero. 1843 */ 1844 static int 1845 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1846 { 1847 /* userland sees value in ms, internally is in ticks */ 1848 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1849 int error, timo, lsleep; 1850 struct sysctlnode node; 1851 1852 lsleep = forkfsleep * 1000 / hz; 1853 node = *rnode; 1854 node.sysctl_data = &lsleep; 1855 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1856 if (error || newp == NULL) 1857 return (error); 1858 1859 /* refuse negative values, and overly 'long time' */ 1860 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1861 return (EINVAL); 1862 1863 timo = mstohz(lsleep); 1864 1865 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1866 if (lsleep != 0 && timo == 0) 1867 forkfsleep = 1; 1868 else 1869 forkfsleep = timo; 1870 1871 return (0); 1872 } 1873 1874 /* 1875 * sysctl helper routine for kern.root_partition 1876 */ 1877 static int 1878 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1879 { 1880 int rootpart = DISKPART(rootdev); 1881 struct sysctlnode node = *rnode; 1882 1883 node.sysctl_data = &rootpart; 1884 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1885 } 1886 1887 /* 1888 * sysctl helper function for kern.drivers 1889 */ 1890 static int 1891 sysctl_kern_drivers(SYSCTLFN_ARGS) 1892 { 1893 int error; 1894 size_t buflen; 1895 struct kinfo_drivers kd; 1896 char *start, *where; 1897 const char *dname; 1898 int i; 1899 extern struct devsw_conv *devsw_conv; 1900 extern int max_devsw_convs; 1901 1902 if (newp != NULL || namelen != 0) 1903 return (EINVAL); 1904 1905 start = where = oldp; 1906 buflen = *oldlenp; 1907 if (where == NULL) { 1908 *oldlenp = max_devsw_convs * sizeof kd; 1909 return 0; 1910 } 1911 1912 /* 1913 * An array of kinfo_drivers structures 1914 */ 1915 error = 0; 1916 sysctl_unlock(); 1917 mutex_enter(&specfs_lock); 1918 for (i = 0; i < max_devsw_convs; i++) { 1919 dname = devsw_conv[i].d_name; 1920 if (dname == NULL) 1921 continue; 1922 if (buflen < sizeof kd) { 1923 error = ENOMEM; 1924 break; 1925 } 1926 memset(&kd, 0, sizeof(kd)); 1927 kd.d_bmajor = devsw_conv[i].d_bmajor; 1928 kd.d_cmajor = devsw_conv[i].d_cmajor; 1929 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1930 mutex_exit(&specfs_lock); 1931 error = dcopyout(l, &kd, where, sizeof kd); 1932 mutex_enter(&specfs_lock); 1933 if (error != 0) 1934 break; 1935 buflen -= sizeof kd; 1936 where += sizeof kd; 1937 } 1938 mutex_exit(&specfs_lock); 1939 sysctl_relock(); 1940 *oldlenp = where - start; 1941 return error; 1942 } 1943 1944 /* 1945 * sysctl helper function for kern.file2 1946 */ 1947 static int 1948 sysctl_kern_file2(SYSCTLFN_ARGS) 1949 { 1950 struct proc *p; 1951 struct file *fp, *tp, *np; 1952 struct filedesc *fd; 1953 struct kinfo_file kf; 1954 char *dp; 1955 u_int i, op; 1956 size_t len, needed, elem_size, out_size; 1957 int error, arg, elem_count; 1958 fdfile_t *ff; 1959 1960 if (namelen == 1 && name[0] == CTL_QUERY) 1961 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1962 1963 if (namelen != 4) 1964 return (EINVAL); 1965 1966 error = 0; 1967 dp = oldp; 1968 len = (oldp != NULL) ? *oldlenp : 0; 1969 op = name[0]; 1970 arg = name[1]; 1971 elem_size = name[2]; 1972 elem_count = name[3]; 1973 out_size = MIN(sizeof(kf), elem_size); 1974 needed = 0; 1975 1976 if (elem_size < 1 || elem_count < 0) 1977 return (EINVAL); 1978 1979 switch (op) { 1980 case KERN_FILE_BYFILE: 1981 /* 1982 * doesn't use arg so it must be zero 1983 */ 1984 if (arg != 0) 1985 return (EINVAL); 1986 sysctl_unlock(); 1987 /* 1988 * allocate dummy file descriptor to make position in list 1989 */ 1990 if ((tp = fgetdummy()) == NULL) { 1991 sysctl_relock(); 1992 return ENOMEM; 1993 } 1994 mutex_enter(&filelist_lock); 1995 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1996 np = LIST_NEXT(fp, f_list); 1997 mutex_enter(&fp->f_lock); 1998 if (fp->f_count == 0) { 1999 mutex_exit(&fp->f_lock); 2000 continue; 2001 } 2002 /* 2003 * XXX Need to prevent that from being an alternative 2004 * XXX way for getting process information. 2005 */ 2006 if (kauth_authorize_generic(l->l_cred, 2007 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 2008 mutex_exit(&fp->f_lock); 2009 continue; 2010 } 2011 if (len >= elem_size && elem_count > 0) { 2012 fill_file(&kf, fp, NULL, 0, 0); 2013 LIST_INSERT_AFTER(fp, tp, f_list); 2014 mutex_exit(&fp->f_lock); 2015 mutex_exit(&filelist_lock); 2016 error = dcopyout(l, &kf, dp, out_size); 2017 mutex_enter(&filelist_lock); 2018 np = LIST_NEXT(tp, f_list); 2019 LIST_REMOVE(tp, f_list); 2020 if (error) { 2021 break; 2022 } 2023 dp += elem_size; 2024 len -= elem_size; 2025 } else { 2026 mutex_exit(&fp->f_lock); 2027 } 2028 if (elem_count > 0) { 2029 needed += elem_size; 2030 if (elem_count != INT_MAX) 2031 elem_count--; 2032 } 2033 } 2034 mutex_exit(&filelist_lock); 2035 fputdummy(tp); 2036 sysctl_relock(); 2037 break; 2038 case KERN_FILE_BYPID: 2039 if (arg < -1) 2040 /* -1 means all processes */ 2041 return (EINVAL); 2042 sysctl_unlock(); 2043 mutex_enter(proc_lock); 2044 LIST_FOREACH(p, &allproc, p_list) { 2045 if (p->p_stat == SIDL) { 2046 /* skip embryonic processes */ 2047 continue; 2048 } 2049 if (arg > 0 && p->p_pid != arg) { 2050 /* pick only the one we want */ 2051 /* XXX want 0 to mean "kernel files" */ 2052 continue; 2053 } 2054 mutex_enter(p->p_lock); 2055 error = kauth_authorize_process(l->l_cred, 2056 KAUTH_PROCESS_CANSEE, p, 2057 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_OPENFILES), 2058 NULL, NULL); 2059 mutex_exit(p->p_lock); 2060 if (error != 0) { 2061 continue; 2062 } 2063 2064 /* 2065 * Grab a hold on the process. 2066 */ 2067 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 2068 continue; 2069 } 2070 mutex_exit(proc_lock); 2071 2072 /* XXX Do we need to check permission per file? */ 2073 fd = p->p_fd; 2074 mutex_enter(&fd->fd_lock); 2075 for (i = 0; i < fd->fd_nfiles; i++) { 2076 if ((ff = fd->fd_ofiles[i]) == NULL) { 2077 continue; 2078 } 2079 mutex_enter(&ff->ff_lock); 2080 if ((fp = ff->ff_file) == NULL) { 2081 mutex_exit(&ff->ff_lock); 2082 continue; 2083 } 2084 if (len >= elem_size && elem_count > 0) { 2085 mutex_enter(&fp->f_lock); 2086 fill_file(&kf, fp, ff, i, p->p_pid); 2087 mutex_exit(&fp->f_lock); 2088 mutex_exit(&ff->ff_lock); 2089 mutex_exit(&fd->fd_lock); 2090 error = dcopyout(l, &kf, dp, out_size); 2091 mutex_enter(&fd->fd_lock); 2092 if (error) 2093 break; 2094 dp += elem_size; 2095 len -= elem_size; 2096 } else { 2097 mutex_exit(&ff->ff_lock); 2098 } 2099 if (elem_count > 0) { 2100 needed += elem_size; 2101 if (elem_count != INT_MAX) 2102 elem_count--; 2103 } 2104 } 2105 mutex_exit(&fd->fd_lock); 2106 2107 /* 2108 * Release reference to process. 2109 */ 2110 mutex_enter(proc_lock); 2111 rw_exit(&p->p_reflock); 2112 } 2113 mutex_exit(proc_lock); 2114 sysctl_relock(); 2115 break; 2116 default: 2117 return (EINVAL); 2118 } 2119 2120 if (oldp == NULL) 2121 needed += KERN_FILESLOP * elem_size; 2122 *oldlenp = needed; 2123 2124 return (error); 2125 } 2126 2127 static void 2128 fill_file(struct kinfo_file *kp, const file_t *fp, const fdfile_t *ff, 2129 int i, pid_t pid) 2130 { 2131 2132 memset(kp, 0, sizeof(*kp)); 2133 2134 kp->ki_fileaddr = PTRTOUINT64(fp); 2135 kp->ki_flag = fp->f_flag; 2136 kp->ki_iflags = fp->f_iflags; 2137 kp->ki_ftype = fp->f_type; 2138 kp->ki_count = fp->f_count; 2139 kp->ki_msgcount = fp->f_msgcount; 2140 kp->ki_fucred = PTRTOUINT64(fp->f_cred); 2141 kp->ki_fuid = kauth_cred_geteuid(fp->f_cred); 2142 kp->ki_fgid = kauth_cred_getegid(fp->f_cred); 2143 kp->ki_fops = PTRTOUINT64(fp->f_ops); 2144 kp->ki_foffset = fp->f_offset; 2145 kp->ki_fdata = PTRTOUINT64(fp->f_data); 2146 2147 /* vnode information to glue this file to something */ 2148 if (fp->f_type == DTYPE_VNODE) { 2149 struct vnode *vp = (struct vnode *)fp->f_data; 2150 2151 kp->ki_vun = PTRTOUINT64(vp->v_un.vu_socket); 2152 kp->ki_vsize = vp->v_size; 2153 kp->ki_vtype = vp->v_type; 2154 kp->ki_vtag = vp->v_tag; 2155 kp->ki_vdata = PTRTOUINT64(vp->v_data); 2156 } 2157 2158 /* process information when retrieved via KERN_FILE_BYPID */ 2159 if (ff != NULL) { 2160 kp->ki_pid = pid; 2161 kp->ki_fd = i; 2162 kp->ki_ofileflags = ff->ff_exclose; 2163 kp->ki_usecount = ff->ff_refcnt; 2164 } 2165 } 2166 2167 static int 2168 sysctl_doeproc(SYSCTLFN_ARGS) 2169 { 2170 struct eproc *eproc; 2171 struct kinfo_proc2 *kproc2; 2172 struct kinfo_proc *dp; 2173 struct proc *p, *next, *marker; 2174 char *where, *dp2; 2175 int type, op, arg, error; 2176 u_int elem_size, elem_count; 2177 size_t buflen, needed; 2178 bool match, zombie, mmmbrains; 2179 2180 if (namelen == 1 && name[0] == CTL_QUERY) 2181 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2182 2183 dp = oldp; 2184 dp2 = where = oldp; 2185 buflen = where != NULL ? *oldlenp : 0; 2186 error = 0; 2187 needed = 0; 2188 type = rnode->sysctl_num; 2189 2190 if (type == KERN_PROC) { 2191 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 2192 return (EINVAL); 2193 op = name[0]; 2194 if (op != KERN_PROC_ALL) 2195 arg = name[1]; 2196 else 2197 arg = 0; /* Quell compiler warning */ 2198 elem_size = elem_count = 0; /* Ditto */ 2199 } else { 2200 if (namelen != 4) 2201 return (EINVAL); 2202 op = name[0]; 2203 arg = name[1]; 2204 elem_size = name[2]; 2205 elem_count = name[3]; 2206 } 2207 2208 sysctl_unlock(); 2209 2210 if (type == KERN_PROC) { 2211 eproc = kmem_alloc(sizeof(*eproc), KM_SLEEP); 2212 kproc2 = NULL; 2213 } else { 2214 eproc = NULL; 2215 kproc2 = kmem_alloc(sizeof(*kproc2), KM_SLEEP); 2216 } 2217 marker = kmem_alloc(sizeof(*marker), KM_SLEEP); 2218 2219 mutex_enter(proc_lock); 2220 mmmbrains = false; 2221 for (p = LIST_FIRST(&allproc);; p = next) { 2222 if (p == NULL) { 2223 if (!mmmbrains) { 2224 p = LIST_FIRST(&zombproc); 2225 mmmbrains = true; 2226 } 2227 if (p == NULL) 2228 break; 2229 } 2230 next = LIST_NEXT(p, p_list); 2231 2232 /* 2233 * Skip embryonic processes. 2234 */ 2235 if (p->p_stat == SIDL) 2236 continue; 2237 2238 mutex_enter(p->p_lock); 2239 error = kauth_authorize_process(l->l_cred, 2240 KAUTH_PROCESS_CANSEE, p, 2241 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENTRY), NULL, NULL); 2242 if (error != 0) { 2243 mutex_exit(p->p_lock); 2244 continue; 2245 } 2246 2247 /* 2248 * TODO - make more efficient (see notes below). 2249 * do by session. 2250 */ 2251 switch (op) { 2252 case KERN_PROC_PID: 2253 /* could do this with just a lookup */ 2254 match = (p->p_pid == (pid_t)arg); 2255 break; 2256 2257 case KERN_PROC_PGRP: 2258 /* could do this by traversing pgrp */ 2259 match = (p->p_pgrp->pg_id == (pid_t)arg); 2260 break; 2261 2262 case KERN_PROC_SESSION: 2263 match = (p->p_session->s_sid == (pid_t)arg); 2264 break; 2265 2266 case KERN_PROC_TTY: 2267 match = true; 2268 if (arg == (int) KERN_PROC_TTY_REVOKE) { 2269 if ((p->p_lflag & PL_CONTROLT) == 0 || 2270 p->p_session->s_ttyp == NULL || 2271 p->p_session->s_ttyvp != NULL) { 2272 match = false; 2273 } 2274 } else if ((p->p_lflag & PL_CONTROLT) == 0 || 2275 p->p_session->s_ttyp == NULL) { 2276 if ((dev_t)arg != KERN_PROC_TTY_NODEV) { 2277 match = false; 2278 } 2279 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) { 2280 match = false; 2281 } 2282 break; 2283 2284 case KERN_PROC_UID: 2285 match = (kauth_cred_geteuid(p->p_cred) == (uid_t)arg); 2286 break; 2287 2288 case KERN_PROC_RUID: 2289 match = (kauth_cred_getuid(p->p_cred) == (uid_t)arg); 2290 break; 2291 2292 case KERN_PROC_GID: 2293 match = (kauth_cred_getegid(p->p_cred) == (uid_t)arg); 2294 break; 2295 2296 case KERN_PROC_RGID: 2297 match = (kauth_cred_getgid(p->p_cred) == (uid_t)arg); 2298 break; 2299 2300 case KERN_PROC_ALL: 2301 match = true; 2302 /* allow everything */ 2303 break; 2304 2305 default: 2306 error = EINVAL; 2307 mutex_exit(p->p_lock); 2308 goto cleanup; 2309 } 2310 if (!match) { 2311 mutex_exit(p->p_lock); 2312 continue; 2313 } 2314 2315 /* 2316 * Grab a hold on the process. 2317 */ 2318 if (mmmbrains) { 2319 zombie = true; 2320 } else { 2321 zombie = !rw_tryenter(&p->p_reflock, RW_READER); 2322 } 2323 if (zombie) { 2324 LIST_INSERT_AFTER(p, marker, p_list); 2325 } 2326 2327 if (type == KERN_PROC) { 2328 if (buflen >= sizeof(struct kinfo_proc)) { 2329 fill_eproc(p, eproc, zombie); 2330 mutex_exit(p->p_lock); 2331 mutex_exit(proc_lock); 2332 error = dcopyout(l, p, &dp->kp_proc, 2333 sizeof(struct proc)); 2334 mutex_enter(proc_lock); 2335 if (error) { 2336 goto bah; 2337 } 2338 error = dcopyout(l, eproc, &dp->kp_eproc, 2339 sizeof(*eproc)); 2340 if (error) { 2341 goto bah; 2342 } 2343 dp++; 2344 buflen -= sizeof(struct kinfo_proc); 2345 } else { 2346 mutex_exit(p->p_lock); 2347 } 2348 needed += sizeof(struct kinfo_proc); 2349 } else { /* KERN_PROC2 */ 2350 if (buflen >= elem_size && elem_count > 0) { 2351 fill_kproc2(p, kproc2, zombie); 2352 mutex_exit(p->p_lock); 2353 mutex_exit(proc_lock); 2354 /* 2355 * Copy out elem_size, but not larger than 2356 * the size of a struct kinfo_proc2. 2357 */ 2358 error = dcopyout(l, kproc2, dp2, 2359 min(sizeof(*kproc2), elem_size)); 2360 mutex_enter(proc_lock); 2361 if (error) { 2362 goto bah; 2363 } 2364 dp2 += elem_size; 2365 buflen -= elem_size; 2366 elem_count--; 2367 } else { 2368 mutex_exit(p->p_lock); 2369 } 2370 needed += elem_size; 2371 } 2372 2373 /* 2374 * Release reference to process. 2375 */ 2376 if (zombie) { 2377 next = LIST_NEXT(marker, p_list); 2378 LIST_REMOVE(marker, p_list); 2379 } else { 2380 rw_exit(&p->p_reflock); 2381 } 2382 } 2383 mutex_exit(proc_lock); 2384 2385 if (where != NULL) { 2386 if (type == KERN_PROC) 2387 *oldlenp = (char *)dp - where; 2388 else 2389 *oldlenp = dp2 - where; 2390 if (needed > *oldlenp) { 2391 error = ENOMEM; 2392 goto out; 2393 } 2394 } else { 2395 needed += KERN_PROCSLOP; 2396 *oldlenp = needed; 2397 } 2398 if (kproc2) 2399 kmem_free(kproc2, sizeof(*kproc2)); 2400 if (eproc) 2401 kmem_free(eproc, sizeof(*eproc)); 2402 if (marker) 2403 kmem_free(marker, sizeof(*marker)); 2404 sysctl_relock(); 2405 return 0; 2406 bah: 2407 if (zombie) 2408 LIST_REMOVE(marker, p_list); 2409 else 2410 rw_exit(&p->p_reflock); 2411 cleanup: 2412 mutex_exit(proc_lock); 2413 out: 2414 if (kproc2) 2415 kmem_free(kproc2, sizeof(*kproc2)); 2416 if (eproc) 2417 kmem_free(eproc, sizeof(*eproc)); 2418 if (marker) 2419 kmem_free(marker, sizeof(*marker)); 2420 sysctl_relock(); 2421 return error; 2422 } 2423 2424 /* 2425 * sysctl helper routine for kern.proc_args pseudo-subtree. 2426 */ 2427 static int 2428 sysctl_kern_proc_args(SYSCTLFN_ARGS) 2429 { 2430 struct ps_strings pss; 2431 struct proc *p; 2432 size_t len, i; 2433 struct uio auio; 2434 struct iovec aiov; 2435 pid_t pid; 2436 int nargv, type, error, argvlen; 2437 char *arg; 2438 char **argv = NULL; 2439 char *tmp; 2440 struct vmspace *vmspace; 2441 vaddr_t psstr_addr; 2442 vaddr_t offsetn; 2443 vaddr_t offsetv; 2444 2445 if (namelen == 1 && name[0] == CTL_QUERY) 2446 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2447 2448 if (newp != NULL || namelen != 2) 2449 return (EINVAL); 2450 pid = name[0]; 2451 type = name[1]; 2452 argv = NULL; 2453 argvlen = 0; 2454 2455 switch (type) { 2456 case KERN_PROC_ARGV: 2457 case KERN_PROC_NARGV: 2458 case KERN_PROC_ENV: 2459 case KERN_PROC_NENV: 2460 /* ok */ 2461 break; 2462 default: 2463 return (EINVAL); 2464 } 2465 2466 sysctl_unlock(); 2467 2468 /* check pid */ 2469 mutex_enter(proc_lock); 2470 if ((p = p_find(pid, PFIND_LOCKED)) == NULL) { 2471 error = EINVAL; 2472 goto out_locked; 2473 } 2474 mutex_enter(p->p_lock); 2475 2476 /* Check permission. */ 2477 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 2478 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2479 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ARGS), NULL, NULL); 2480 else if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) 2481 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2482 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENV), NULL, NULL); 2483 else 2484 error = EINVAL; /* XXXGCC */ 2485 if (error) { 2486 mutex_exit(p->p_lock); 2487 goto out_locked; 2488 } 2489 2490 if (oldp == NULL) { 2491 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 2492 *oldlenp = sizeof (int); 2493 else 2494 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 2495 error = 0; 2496 mutex_exit(p->p_lock); 2497 goto out_locked; 2498 } 2499 2500 /* 2501 * Zombies don't have a stack, so we can't read their psstrings. 2502 * System processes also don't have a user stack. 2503 */ 2504 if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) { 2505 error = EINVAL; 2506 mutex_exit(p->p_lock); 2507 goto out_locked; 2508 } 2509 2510 /* 2511 * Lock the process down in memory. 2512 */ 2513 psstr_addr = (vaddr_t)p->p_psstr; 2514 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) { 2515 offsetn = p->p_psnargv; 2516 offsetv = p->p_psargv; 2517 } else { 2518 offsetn = p->p_psnenv; 2519 offsetv = p->p_psenv; 2520 } 2521 vmspace = p->p_vmspace; 2522 uvmspace_addref(vmspace); 2523 mutex_exit(p->p_lock); 2524 mutex_exit(proc_lock); 2525 2526 /* 2527 * Allocate a temporary buffer to hold the arguments. 2528 */ 2529 arg = kmem_alloc(PAGE_SIZE, KM_SLEEP); 2530 2531 /* 2532 * Read in the ps_strings structure. 2533 */ 2534 aiov.iov_base = &pss; 2535 aiov.iov_len = sizeof(pss); 2536 auio.uio_iov = &aiov; 2537 auio.uio_iovcnt = 1; 2538 auio.uio_offset = psstr_addr; 2539 auio.uio_resid = sizeof(pss); 2540 auio.uio_rw = UIO_READ; 2541 UIO_SETUP_SYSSPACE(&auio); 2542 error = uvm_io(&vmspace->vm_map, &auio); 2543 if (error) 2544 goto done; 2545 2546 memcpy(&nargv, (char *)&pss + offsetn, sizeof(nargv)); 2547 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 2548 error = dcopyout(l, &nargv, oldp, sizeof(nargv)); 2549 *oldlenp = sizeof(nargv); 2550 goto done; 2551 } 2552 /* 2553 * Now read the address of the argument vector. 2554 */ 2555 switch (type) { 2556 case KERN_PROC_ARGV: 2557 /* FALLTHROUGH */ 2558 case KERN_PROC_ENV: 2559 memcpy(&tmp, (char *)&pss + offsetv, sizeof(tmp)); 2560 break; 2561 default: 2562 error = EINVAL; 2563 goto done; 2564 } 2565 2566 #ifdef COMPAT_NETBSD32 2567 if (p->p_flag & PK_32) 2568 len = sizeof(netbsd32_charp) * nargv; 2569 else 2570 #endif 2571 len = sizeof(char *) * nargv; 2572 2573 if ((argvlen = len) != 0) 2574 argv = kmem_alloc(len, KM_SLEEP); 2575 2576 aiov.iov_base = argv; 2577 aiov.iov_len = len; 2578 auio.uio_iov = &aiov; 2579 auio.uio_iovcnt = 1; 2580 auio.uio_offset = (off_t)(unsigned long)tmp; 2581 auio.uio_resid = len; 2582 auio.uio_rw = UIO_READ; 2583 UIO_SETUP_SYSSPACE(&auio); 2584 error = uvm_io(&vmspace->vm_map, &auio); 2585 if (error) 2586 goto done; 2587 2588 /* 2589 * Now copy each string. 2590 */ 2591 len = 0; /* bytes written to user buffer */ 2592 for (i = 0; i < nargv; i++) { 2593 int finished = 0; 2594 vaddr_t base; 2595 size_t xlen; 2596 int j; 2597 2598 #ifdef COMPAT_NETBSD32 2599 if (p->p_flag & PK_32) { 2600 netbsd32_charp *argv32; 2601 2602 argv32 = (netbsd32_charp *)argv; 2603 base = (vaddr_t)NETBSD32PTR64(argv32[i]); 2604 } else 2605 #endif 2606 base = (vaddr_t)argv[i]; 2607 2608 /* 2609 * The program has messed around with its arguments, 2610 * possibly deleting some, and replacing them with 2611 * NULL's. Treat this as the last argument and not 2612 * a failure. 2613 */ 2614 if (base == 0) 2615 break; 2616 2617 while (!finished) { 2618 xlen = PAGE_SIZE - (base & PAGE_MASK); 2619 2620 aiov.iov_base = arg; 2621 aiov.iov_len = PAGE_SIZE; 2622 auio.uio_iov = &aiov; 2623 auio.uio_iovcnt = 1; 2624 auio.uio_offset = base; 2625 auio.uio_resid = xlen; 2626 auio.uio_rw = UIO_READ; 2627 UIO_SETUP_SYSSPACE(&auio); 2628 error = uvm_io(&vmspace->vm_map, &auio); 2629 if (error) 2630 goto done; 2631 2632 /* Look for the end of the string */ 2633 for (j = 0; j < xlen; j++) { 2634 if (arg[j] == '\0') { 2635 xlen = j + 1; 2636 finished = 1; 2637 break; 2638 } 2639 } 2640 2641 /* Check for user buffer overflow */ 2642 if (len + xlen > *oldlenp) { 2643 finished = 1; 2644 if (len > *oldlenp) 2645 xlen = 0; 2646 else 2647 xlen = *oldlenp - len; 2648 } 2649 2650 /* Copyout the page */ 2651 error = dcopyout(l, arg, (char *)oldp + len, xlen); 2652 if (error) 2653 goto done; 2654 2655 len += xlen; 2656 base += xlen; 2657 } 2658 } 2659 *oldlenp = len; 2660 2661 done: 2662 if (argvlen != 0) 2663 kmem_free(argv, argvlen); 2664 uvmspace_free(vmspace); 2665 kmem_free(arg, PAGE_SIZE); 2666 sysctl_relock(); 2667 return error; 2668 2669 out_locked: 2670 mutex_exit(proc_lock); 2671 sysctl_relock(); 2672 return error; 2673 } 2674 2675 static int 2676 sysctl_security_setidcore(SYSCTLFN_ARGS) 2677 { 2678 int newsize, error; 2679 struct sysctlnode node; 2680 2681 node = *rnode; 2682 node.sysctl_data = &newsize; 2683 newsize = *(int *)rnode->sysctl_data; 2684 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2685 if (error || newp == NULL) 2686 return error; 2687 2688 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2689 0, NULL, NULL, NULL)) 2690 return (EPERM); 2691 2692 *(int *)rnode->sysctl_data = newsize; 2693 2694 return 0; 2695 } 2696 2697 static int 2698 sysctl_security_setidcorename(SYSCTLFN_ARGS) 2699 { 2700 int error; 2701 char *newsetidcorename; 2702 struct sysctlnode node; 2703 2704 newsetidcorename = PNBUF_GET(); 2705 node = *rnode; 2706 node.sysctl_data = newsetidcorename; 2707 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 2708 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2709 if (error || newp == NULL) { 2710 goto out; 2711 } 2712 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2713 0, NULL, NULL, NULL)) { 2714 error = EPERM; 2715 goto out; 2716 } 2717 if (strlen(newsetidcorename) == 0) { 2718 error = EINVAL; 2719 goto out; 2720 } 2721 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 2722 out: 2723 PNBUF_PUT(newsetidcorename); 2724 return error; 2725 } 2726 2727 /* 2728 * sysctl helper routine for kern.cp_id node. Maps cpus to their 2729 * cpuids. 2730 */ 2731 static int 2732 sysctl_kern_cpid(SYSCTLFN_ARGS) 2733 { 2734 struct sysctlnode node = *rnode; 2735 uint64_t *cp_id = NULL; 2736 int error, n = ncpu; 2737 struct cpu_info *ci; 2738 CPU_INFO_ITERATOR cii; 2739 2740 /* 2741 * Here you may either retrieve a single cpu id or the whole 2742 * set. The size you get back when probing depends on what 2743 * you ask for. 2744 */ 2745 switch (namelen) { 2746 case 0: 2747 node.sysctl_size = n * sizeof(uint64_t); 2748 n = -2; /* ALL */ 2749 break; 2750 case 1: 2751 if (name[0] < 0 || name[0] >= n) 2752 return (ENOENT); /* ENOSUCHPROCESSOR */ 2753 node.sysctl_size = sizeof(uint64_t); 2754 n = name[0]; 2755 /* 2756 * adjust these so that sysctl_lookup() will be happy 2757 */ 2758 name++; 2759 namelen--; 2760 break; 2761 default: 2762 return (EINVAL); 2763 } 2764 2765 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 2766 if (cp_id == NULL) 2767 return (ENOMEM); 2768 node.sysctl_data = cp_id; 2769 memset(cp_id, 0, node.sysctl_size); 2770 2771 for (CPU_INFO_FOREACH(cii, ci)) { 2772 if (n <= 0) 2773 cp_id[0] = cpu_index(ci); 2774 /* 2775 * if a specific processor was requested and we just 2776 * did it, we're done here 2777 */ 2778 if (n == 0) 2779 break; 2780 /* 2781 * if doing "all", skip to next cp_id slot for next processor 2782 */ 2783 if (n == -2) 2784 cp_id++; 2785 /* 2786 * if we're doing a specific processor, we're one 2787 * processor closer 2788 */ 2789 if (n > 0) 2790 n--; 2791 } 2792 2793 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2794 kmem_free(node.sysctl_data, node.sysctl_size); 2795 return (error); 2796 } 2797 2798 /* 2799 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 2800 * calculate on the fly taking into account integer overflow and the 2801 * current wired count. 2802 */ 2803 static int 2804 sysctl_hw_usermem(SYSCTLFN_ARGS) 2805 { 2806 u_int ui; 2807 u_quad_t uq; 2808 struct sysctlnode node; 2809 2810 node = *rnode; 2811 switch (rnode->sysctl_num) { 2812 case HW_USERMEM: 2813 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 2814 ui = UINT_MAX; 2815 else 2816 ui *= PAGE_SIZE; 2817 node.sysctl_data = &ui; 2818 break; 2819 case HW_USERMEM64: 2820 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2821 node.sysctl_data = &uq; 2822 break; 2823 default: 2824 return (EINVAL); 2825 } 2826 2827 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2828 } 2829 2830 /* 2831 * sysctl helper routine for kern.cnmagic node. Pulls the old value 2832 * out, encoded, and stuffs the new value in for decoding. 2833 */ 2834 static int 2835 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2836 { 2837 char magic[CNS_LEN]; 2838 int error; 2839 struct sysctlnode node; 2840 2841 if (oldp) 2842 cn_get_magic(magic, CNS_LEN); 2843 node = *rnode; 2844 node.sysctl_data = &magic[0]; 2845 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2846 if (error || newp == NULL) 2847 return (error); 2848 2849 return (cn_set_magic(magic)); 2850 } 2851 2852 /* 2853 * ******************************************************************** 2854 * section 3: public helper routines that are used for more than one 2855 * node 2856 * ******************************************************************** 2857 */ 2858 2859 /* 2860 * sysctl helper routine for the kern.root_device node and some ports' 2861 * machdep.root_device nodes. 2862 */ 2863 int 2864 sysctl_root_device(SYSCTLFN_ARGS) 2865 { 2866 struct sysctlnode node; 2867 2868 node = *rnode; 2869 node.sysctl_data = root_device->dv_xname; 2870 node.sysctl_size = strlen(device_xname(root_device)) + 1; 2871 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2872 } 2873 2874 /* 2875 * sysctl helper routine for kern.consdev, dependent on the current 2876 * state of the console. Also used for machdep.console_device on some 2877 * ports. 2878 */ 2879 int 2880 sysctl_consdev(SYSCTLFN_ARGS) 2881 { 2882 dev_t consdev; 2883 struct sysctlnode node; 2884 2885 if (cn_tab != NULL) 2886 consdev = cn_tab->cn_dev; 2887 else 2888 consdev = NODEV; 2889 node = *rnode; 2890 node.sysctl_data = &consdev; 2891 node.sysctl_size = sizeof(consdev); 2892 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2893 } 2894 2895 /* 2896 * ******************************************************************** 2897 * section 4: support for some helpers 2898 * ******************************************************************** 2899 */ 2900 /* 2901 * Find the most ``active'' lwp of a process and return it for ps display 2902 * purposes 2903 */ 2904 static struct lwp * 2905 proc_active_lwp(struct proc *p) 2906 { 2907 static const int ostat[] = { 2908 0, 2909 2, /* LSIDL */ 2910 6, /* LSRUN */ 2911 5, /* LSSLEEP */ 2912 4, /* LSSTOP */ 2913 0, /* LSZOMB */ 2914 1, /* LSDEAD */ 2915 7, /* LSONPROC */ 2916 3 /* LSSUSPENDED */ 2917 }; 2918 2919 struct lwp *l, *lp = NULL; 2920 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 2921 KASSERT(l->l_stat >= 0 && l->l_stat < __arraycount(ostat)); 2922 if (lp == NULL || 2923 ostat[l->l_stat] > ostat[lp->l_stat] || 2924 (ostat[l->l_stat] == ostat[lp->l_stat] && 2925 l->l_cpticks > lp->l_cpticks)) { 2926 lp = l; 2927 continue; 2928 } 2929 } 2930 return lp; 2931 } 2932 2933 2934 /* 2935 * Fill in a kinfo_proc2 structure for the specified process. 2936 */ 2937 static void 2938 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki, bool zombie) 2939 { 2940 struct tty *tp; 2941 struct lwp *l, *l2; 2942 struct timeval ut, st, rt; 2943 sigset_t ss1, ss2; 2944 struct rusage ru; 2945 struct vmspace *vm; 2946 2947 KASSERT(mutex_owned(proc_lock)); 2948 KASSERT(mutex_owned(p->p_lock)); 2949 2950 sigemptyset(&ss1); 2951 sigemptyset(&ss2); 2952 memset(ki, 0, sizeof(*ki)); 2953 2954 ki->p_paddr = PTRTOUINT64(p); 2955 ki->p_fd = PTRTOUINT64(p->p_fd); 2956 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2957 ki->p_stats = PTRTOUINT64(p->p_stats); 2958 ki->p_limit = PTRTOUINT64(p->p_limit); 2959 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2960 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2961 ki->p_sess = PTRTOUINT64(p->p_session); 2962 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2963 ki->p_ru = PTRTOUINT64(&p->p_stats->p_ru); 2964 ki->p_eflag = 0; 2965 ki->p_exitsig = p->p_exitsig; 2966 ki->p_flag = sysctl_map_flags(sysctl_flagmap, p->p_flag); 2967 ki->p_flag |= sysctl_map_flags(sysctl_sflagmap, p->p_sflag); 2968 ki->p_flag |= sysctl_map_flags(sysctl_slflagmap, p->p_slflag); 2969 ki->p_flag |= sysctl_map_flags(sysctl_lflagmap, p->p_lflag); 2970 ki->p_flag |= sysctl_map_flags(sysctl_stflagmap, p->p_stflag); 2971 ki->p_pid = p->p_pid; 2972 if (p->p_pptr) 2973 ki->p_ppid = p->p_pptr->p_pid; 2974 else 2975 ki->p_ppid = 0; 2976 ki->p_uid = kauth_cred_geteuid(p->p_cred); 2977 ki->p_ruid = kauth_cred_getuid(p->p_cred); 2978 ki->p_gid = kauth_cred_getegid(p->p_cred); 2979 ki->p_rgid = kauth_cred_getgid(p->p_cred); 2980 ki->p_svuid = kauth_cred_getsvuid(p->p_cred); 2981 ki->p_svgid = kauth_cred_getsvgid(p->p_cred); 2982 ki->p_ngroups = kauth_cred_ngroups(p->p_cred); 2983 kauth_cred_getgroups(p->p_cred, ki->p_groups, 2984 min(ki->p_ngroups, sizeof(ki->p_groups) / sizeof(ki->p_groups[0])), 2985 UIO_SYSSPACE); 2986 2987 ki->p_uticks = p->p_uticks; 2988 ki->p_sticks = p->p_sticks; 2989 ki->p_iticks = p->p_iticks; 2990 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2991 ki->p_tracep = PTRTOUINT64(p->p_tracep); 2992 ki->p_traceflag = p->p_traceflag; 2993 2994 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2995 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2996 2997 ki->p_cpticks = 0; 2998 ki->p_pctcpu = p->p_pctcpu; 2999 ki->p_estcpu = 0; 3000 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 3001 ki->p_realstat = p->p_stat; 3002 ki->p_nice = p->p_nice; 3003 ki->p_xstat = p->p_xstat; 3004 ki->p_acflag = p->p_acflag; 3005 3006 strncpy(ki->p_comm, p->p_comm, 3007 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 3008 strncpy(ki->p_ename, p->p_emul->e_name, sizeof(ki->p_ename)); 3009 3010 ki->p_nlwps = p->p_nlwps; 3011 ki->p_realflag = ki->p_flag; 3012 3013 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3014 vm = p->p_vmspace; 3015 ki->p_vm_rssize = vm_resident_count(vm); 3016 ki->p_vm_tsize = vm->vm_tsize; 3017 ki->p_vm_dsize = vm->vm_dsize; 3018 ki->p_vm_ssize = vm->vm_ssize; 3019 3020 /* Pick the primary (first) LWP */ 3021 l = proc_active_lwp(p); 3022 KASSERT(l != NULL); 3023 lwp_lock(l); 3024 ki->p_nrlwps = p->p_nrlwps; 3025 ki->p_forw = 0; 3026 ki->p_back = 0; 3027 ki->p_addr = PTRTOUINT64(l->l_addr); 3028 ki->p_stat = l->l_stat; 3029 ki->p_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3030 ki->p_swtime = l->l_swtime; 3031 ki->p_slptime = l->l_slptime; 3032 if (l->l_stat == LSONPROC) 3033 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3034 else 3035 ki->p_schedflags = 0; 3036 ki->p_holdcnt = l->l_holdcnt; 3037 ki->p_priority = lwp_eprio(l); 3038 ki->p_usrpri = l->l_priority; 3039 if (l->l_wchan) 3040 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 3041 ki->p_wchan = PTRTOUINT64(l->l_wchan); 3042 ki->p_cpuid = cpu_index(l->l_cpu); 3043 lwp_unlock(l); 3044 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 3045 /* This is hardly correct, but... */ 3046 sigplusset(&l->l_sigpend.sp_set, &ss1); 3047 sigplusset(&l->l_sigmask, &ss2); 3048 ki->p_cpticks += l->l_cpticks; 3049 ki->p_pctcpu += l->l_pctcpu; 3050 ki->p_estcpu += l->l_estcpu; 3051 } 3052 } 3053 sigplusset(&p->p_sigpend.sp_set, &ss2); 3054 memcpy(&ki->p_siglist, &ss1, sizeof(ki_sigset_t)); 3055 memcpy(&ki->p_sigmask, &ss2, sizeof(ki_sigset_t)); 3056 3057 if (p->p_session != NULL) { 3058 ki->p_sid = p->p_session->s_sid; 3059 ki->p__pgid = p->p_pgrp->pg_id; 3060 if (p->p_session->s_ttyvp) 3061 ki->p_eflag |= EPROC_CTTY; 3062 if (SESS_LEADER(p)) 3063 ki->p_eflag |= EPROC_SLEADER; 3064 strncpy(ki->p_login, p->p_session->s_login, 3065 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 3066 ki->p_jobc = p->p_pgrp->pg_jobc; 3067 if ((p->p_lflag & PL_CONTROLT) && (tp = p->p_session->s_ttyp)) { 3068 ki->p_tdev = tp->t_dev; 3069 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3070 ki->p_tsess = PTRTOUINT64(tp->t_session); 3071 } else { 3072 ki->p_tdev = NODEV; 3073 } 3074 } 3075 3076 if (!P_ZOMBIE(p) && !zombie) { 3077 ki->p_uvalid = 1; 3078 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 3079 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 3080 3081 calcru(p, &ut, &st, NULL, &rt); 3082 ki->p_rtime_sec = rt.tv_sec; 3083 ki->p_rtime_usec = rt.tv_usec; 3084 ki->p_uutime_sec = ut.tv_sec; 3085 ki->p_uutime_usec = ut.tv_usec; 3086 ki->p_ustime_sec = st.tv_sec; 3087 ki->p_ustime_usec = st.tv_usec; 3088 3089 memcpy(&ru, &p->p_stats->p_ru, sizeof(ru)); 3090 ki->p_uru_nvcsw = 0; 3091 ki->p_uru_nivcsw = 0; 3092 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 3093 ki->p_uru_nvcsw += (l2->l_ncsw - l2->l_nivcsw); 3094 ki->p_uru_nivcsw += l2->l_nivcsw; 3095 ruadd(&ru, &l2->l_ru); 3096 } 3097 ki->p_uru_maxrss = ru.ru_maxrss; 3098 ki->p_uru_ixrss = ru.ru_ixrss; 3099 ki->p_uru_idrss = ru.ru_idrss; 3100 ki->p_uru_isrss = ru.ru_isrss; 3101 ki->p_uru_minflt = ru.ru_minflt; 3102 ki->p_uru_majflt = ru.ru_majflt; 3103 ki->p_uru_nswap = ru.ru_nswap; 3104 ki->p_uru_inblock = ru.ru_inblock; 3105 ki->p_uru_oublock = ru.ru_oublock; 3106 ki->p_uru_msgsnd = ru.ru_msgsnd; 3107 ki->p_uru_msgrcv = ru.ru_msgrcv; 3108 ki->p_uru_nsignals = ru.ru_nsignals; 3109 3110 timeradd(&p->p_stats->p_cru.ru_utime, 3111 &p->p_stats->p_cru.ru_stime, &ut); 3112 ki->p_uctime_sec = ut.tv_sec; 3113 ki->p_uctime_usec = ut.tv_usec; 3114 } 3115 } 3116 3117 /* 3118 * Fill in a kinfo_lwp structure for the specified lwp. 3119 */ 3120 static void 3121 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 3122 { 3123 struct proc *p = l->l_proc; 3124 struct timeval tv; 3125 3126 KASSERT(lwp_locked(l, NULL)); 3127 3128 kl->l_forw = 0; 3129 kl->l_back = 0; 3130 kl->l_laddr = PTRTOUINT64(l); 3131 kl->l_addr = PTRTOUINT64(l->l_addr); 3132 kl->l_stat = l->l_stat; 3133 kl->l_lid = l->l_lid; 3134 kl->l_flag = sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 3135 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3136 3137 kl->l_swtime = l->l_swtime; 3138 kl->l_slptime = l->l_slptime; 3139 if (l->l_stat == LSONPROC) 3140 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3141 else 3142 kl->l_schedflags = 0; 3143 kl->l_holdcnt = l->l_holdcnt; 3144 kl->l_priority = lwp_eprio(l); 3145 kl->l_usrpri = l->l_priority; 3146 if (l->l_wchan) 3147 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 3148 kl->l_wchan = PTRTOUINT64(l->l_wchan); 3149 kl->l_cpuid = cpu_index(l->l_cpu); 3150 bintime2timeval(&l->l_rtime, &tv); 3151 kl->l_rtime_sec = tv.tv_sec; 3152 kl->l_rtime_usec = tv.tv_usec; 3153 kl->l_cpticks = l->l_cpticks; 3154 kl->l_pctcpu = l->l_pctcpu; 3155 kl->l_pid = p->p_pid; 3156 if (l->l_name == NULL) 3157 kl->l_name[0] = '\0'; 3158 else 3159 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 3160 } 3161 3162 /* 3163 * Fill in an eproc structure for the specified process. 3164 */ 3165 void 3166 fill_eproc(struct proc *p, struct eproc *ep, bool zombie) 3167 { 3168 struct tty *tp; 3169 struct lwp *l; 3170 3171 KASSERT(mutex_owned(proc_lock)); 3172 KASSERT(mutex_owned(p->p_lock)); 3173 3174 memset(ep, 0, sizeof(*ep)); 3175 3176 ep->e_paddr = p; 3177 ep->e_sess = p->p_session; 3178 if (p->p_cred) { 3179 kauth_cred_topcred(p->p_cred, &ep->e_pcred); 3180 kauth_cred_toucred(p->p_cred, &ep->e_ucred); 3181 } 3182 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3183 struct vmspace *vm = p->p_vmspace; 3184 3185 ep->e_vm.vm_rssize = vm_resident_count(vm); 3186 ep->e_vm.vm_tsize = vm->vm_tsize; 3187 ep->e_vm.vm_dsize = vm->vm_dsize; 3188 ep->e_vm.vm_ssize = vm->vm_ssize; 3189 3190 /* Pick the primary (first) LWP */ 3191 l = proc_active_lwp(p); 3192 KASSERT(l != NULL); 3193 lwp_lock(l); 3194 if (l->l_wchan) 3195 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 3196 lwp_unlock(l); 3197 } 3198 if (p->p_pptr) 3199 ep->e_ppid = p->p_pptr->p_pid; 3200 if (p->p_pgrp && p->p_session) { 3201 ep->e_pgid = p->p_pgrp->pg_id; 3202 ep->e_jobc = p->p_pgrp->pg_jobc; 3203 ep->e_sid = p->p_session->s_sid; 3204 if ((p->p_lflag & PL_CONTROLT) && 3205 (tp = ep->e_sess->s_ttyp)) { 3206 ep->e_tdev = tp->t_dev; 3207 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3208 ep->e_tsess = tp->t_session; 3209 } else 3210 ep->e_tdev = NODEV; 3211 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 3212 if (SESS_LEADER(p)) 3213 ep->e_flag |= EPROC_SLEADER; 3214 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 3215 } 3216 ep->e_xsize = ep->e_xrssize = 0; 3217 ep->e_xccount = ep->e_xswrss = 0; 3218 } 3219 3220 u_int 3221 sysctl_map_flags(const u_int *map, u_int word) 3222 { 3223 u_int rv; 3224 3225 for (rv = 0; *map != 0; map += 2) 3226 if ((word & map[0]) != 0) 3227 rv |= map[1]; 3228 3229 return rv; 3230 } 3231
Indexes created Tue Sep 23 02:09:52 GMT 2025