init_sysctl.c revision 1.155
1 /* $NetBSD: init_sysctl.c,v 1.155 2009/01/17 09:00:24 cegger 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 1.155 2009/01/17 09:00:24 cegger 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/kmem.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 #ifdef COMPAT_NETBSD32 74 #include <compat/netbsd32/netbsd32.h> 75 #endif 76 #ifdef COMPAT_50 77 #include <compat/sys/time.h> 78 #endif 79 80 #ifdef KERN_SA 81 #include <sys/sa.h> 82 #endif 83 84 #include <sys/cpu.h> 85 86 #if defined(MODULAR) || defined(P1003_1B_SEMAPHORE) 87 int posix_semaphores = 200112; 88 #else 89 int posix_semaphores; 90 #endif 91 92 int security_setidcore_dump; 93 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 94 uid_t security_setidcore_owner = 0; 95 gid_t security_setidcore_group = 0; 96 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 97 98 static const u_int sysctl_flagmap[] = { 99 PK_ADVLOCK, P_ADVLOCK, 100 PK_EXEC, P_EXEC, 101 PK_NOCLDWAIT, P_NOCLDWAIT, 102 PK_32, P_32, 103 PK_CLDSIGIGN, P_CLDSIGIGN, 104 PK_SUGID, P_SUGID, 105 0 106 }; 107 108 static const u_int sysctl_sflagmap[] = { 109 PS_NOCLDSTOP, P_NOCLDSTOP, 110 PS_WEXIT, P_WEXIT, 111 PS_STOPFORK, P_STOPFORK, 112 PS_STOPEXEC, P_STOPEXEC, 113 PS_STOPEXIT, P_STOPEXIT, 114 0 115 }; 116 117 static const u_int sysctl_slflagmap[] = { 118 PSL_TRACED, P_TRACED, 119 PSL_FSTRACE, P_FSTRACE, 120 PSL_CHTRACED, P_CHTRACED, 121 PSL_SYSCALL, P_SYSCALL, 122 0 123 }; 124 125 static const u_int sysctl_lflagmap[] = { 126 PL_CONTROLT, P_CONTROLT, 127 PL_PPWAIT, P_PPWAIT, 128 0 129 }; 130 131 static const u_int sysctl_stflagmap[] = { 132 PST_PROFIL, P_PROFIL, 133 0 134 135 }; 136 137 static const u_int sysctl_lwpflagmap[] = { 138 LW_INMEM, P_INMEM, 139 LW_SINTR, P_SINTR, 140 LW_SYSTEM, P_SYSTEM, 141 LW_SA, P_SA, /* WRS ??? */ 142 0 143 }; 144 145 static const u_int sysctl_lwpprflagmap[] = { 146 LPR_DETACHED, L_DETACHED, 147 0 148 }; 149 150 /* 151 * try over estimating by 5 procs/lwps 152 */ 153 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 154 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 155 156 static int dcopyout(struct lwp *, const void *, void *, size_t); 157 158 static int 159 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 160 { 161 int error; 162 163 error = copyout(kaddr, uaddr, len); 164 ktrmibio(-1, UIO_READ, uaddr, len, error); 165 166 return error; 167 } 168 169 #ifdef DIAGNOSTIC 170 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 171 #endif 172 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 173 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 174 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 175 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 176 static int sysctl_setlen(SYSCTLFN_PROTO); 177 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 178 static int sysctl_kern_file(SYSCTLFN_PROTO); 179 static int sysctl_msgbuf(SYSCTLFN_PROTO); 180 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 181 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 182 #if NPTY > 0 183 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 184 #endif /* NPTY > 0 */ 185 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 186 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 187 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 188 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 189 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 190 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 191 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 192 static int sysctl_kern_file2(SYSCTLFN_PROTO); 193 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 194 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 195 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 196 static int sysctl_doeproc(SYSCTLFN_PROTO); 197 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 198 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 199 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 200 201 static u_int sysctl_map_flags(const u_int *, u_int); 202 static void fill_kproc2(struct proc *, struct kinfo_proc2 *, bool); 203 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 204 static void fill_file(struct kinfo_file *, const file_t *, const fdfile_t *, 205 int, pid_t); 206 207 /* 208 * ******************************************************************** 209 * section 1: setup routines 210 * ******************************************************************** 211 * These functions are stuffed into a link set for sysctl setup 212 * functions. They're never called or referenced from anywhere else. 213 * ******************************************************************** 214 */ 215 216 /* 217 * sets up the base nodes... 218 */ 219 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 220 { 221 222 sysctl_createv(clog, 0, NULL, NULL, 223 CTLFLAG_PERMANENT, 224 CTLTYPE_NODE, "kern", 225 SYSCTL_DESCR("High kernel"), 226 NULL, 0, NULL, 0, 227 CTL_KERN, CTL_EOL); 228 sysctl_createv(clog, 0, NULL, NULL, 229 CTLFLAG_PERMANENT, 230 CTLTYPE_NODE, "vm", 231 SYSCTL_DESCR("Virtual memory"), 232 NULL, 0, NULL, 0, 233 CTL_VM, CTL_EOL); 234 sysctl_createv(clog, 0, NULL, NULL, 235 CTLFLAG_PERMANENT, 236 CTLTYPE_NODE, "vfs", 237 SYSCTL_DESCR("Filesystem"), 238 NULL, 0, NULL, 0, 239 CTL_VFS, CTL_EOL); 240 sysctl_createv(clog, 0, NULL, NULL, 241 CTLFLAG_PERMANENT, 242 CTLTYPE_NODE, "net", 243 SYSCTL_DESCR("Networking"), 244 NULL, 0, NULL, 0, 245 CTL_NET, CTL_EOL); 246 sysctl_createv(clog, 0, NULL, NULL, 247 CTLFLAG_PERMANENT, 248 CTLTYPE_NODE, "debug", 249 SYSCTL_DESCR("Debugging"), 250 NULL, 0, NULL, 0, 251 CTL_DEBUG, CTL_EOL); 252 sysctl_createv(clog, 0, NULL, NULL, 253 CTLFLAG_PERMANENT, 254 CTLTYPE_NODE, "hw", 255 SYSCTL_DESCR("Generic CPU, I/O"), 256 NULL, 0, NULL, 0, 257 CTL_HW, CTL_EOL); 258 sysctl_createv(clog, 0, NULL, NULL, 259 CTLFLAG_PERMANENT, 260 CTLTYPE_NODE, "machdep", 261 SYSCTL_DESCR("Machine dependent"), 262 NULL, 0, NULL, 0, 263 CTL_MACHDEP, CTL_EOL); 264 /* 265 * this node is inserted so that the sysctl nodes in libc can 266 * operate. 267 */ 268 sysctl_createv(clog, 0, NULL, NULL, 269 CTLFLAG_PERMANENT, 270 CTLTYPE_NODE, "user", 271 SYSCTL_DESCR("User-level"), 272 NULL, 0, NULL, 0, 273 CTL_USER, CTL_EOL); 274 sysctl_createv(clog, 0, NULL, NULL, 275 CTLFLAG_PERMANENT, 276 CTLTYPE_NODE, "ddb", 277 SYSCTL_DESCR("In-kernel debugger"), 278 NULL, 0, NULL, 0, 279 CTL_DDB, CTL_EOL); 280 sysctl_createv(clog, 0, NULL, NULL, 281 CTLFLAG_PERMANENT, 282 CTLTYPE_NODE, "proc", 283 SYSCTL_DESCR("Per-process"), 284 NULL, 0, NULL, 0, 285 CTL_PROC, CTL_EOL); 286 sysctl_createv(clog, 0, NULL, NULL, 287 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 288 CTLTYPE_NODE, "vendor", 289 SYSCTL_DESCR("Vendor specific"), 290 NULL, 0, NULL, 0, 291 CTL_VENDOR, CTL_EOL); 292 sysctl_createv(clog, 0, NULL, NULL, 293 CTLFLAG_PERMANENT, 294 CTLTYPE_NODE, "emul", 295 SYSCTL_DESCR("Emulation settings"), 296 NULL, 0, NULL, 0, 297 CTL_EMUL, CTL_EOL); 298 sysctl_createv(clog, 0, NULL, NULL, 299 CTLFLAG_PERMANENT, 300 CTLTYPE_NODE, "security", 301 SYSCTL_DESCR("Security"), 302 NULL, 0, NULL, 0, 303 CTL_SECURITY, CTL_EOL); 304 } 305 306 /* 307 * this setup routine is a replacement for kern_sysctl() 308 */ 309 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 310 { 311 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 312 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 313 extern int dumponpanic; /* defined in kern/subr_prf.c */ 314 const struct sysctlnode *rnode; 315 316 sysctl_createv(clog, 0, NULL, NULL, 317 CTLFLAG_PERMANENT, 318 CTLTYPE_NODE, "kern", NULL, 319 NULL, 0, NULL, 0, 320 CTL_KERN, CTL_EOL); 321 322 sysctl_createv(clog, 0, NULL, NULL, 323 CTLFLAG_PERMANENT, 324 CTLTYPE_STRING, "ostype", 325 SYSCTL_DESCR("Operating system type"), 326 NULL, 0, &ostype, 0, 327 CTL_KERN, KERN_OSTYPE, CTL_EOL); 328 sysctl_createv(clog, 0, NULL, NULL, 329 CTLFLAG_PERMANENT, 330 CTLTYPE_STRING, "osrelease", 331 SYSCTL_DESCR("Operating system release"), 332 NULL, 0, &osrelease, 0, 333 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 334 sysctl_createv(clog, 0, NULL, NULL, 335 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 336 CTLTYPE_INT, "osrevision", 337 SYSCTL_DESCR("Operating system revision"), 338 NULL, __NetBSD_Version__, NULL, 0, 339 CTL_KERN, KERN_OSREV, CTL_EOL); 340 sysctl_createv(clog, 0, NULL, NULL, 341 CTLFLAG_PERMANENT, 342 CTLTYPE_STRING, "version", 343 SYSCTL_DESCR("Kernel version"), 344 NULL, 0, &version, 0, 345 CTL_KERN, KERN_VERSION, CTL_EOL); 346 sysctl_createv(clog, 0, NULL, NULL, 347 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 348 CTLTYPE_INT, "maxvnodes", 349 SYSCTL_DESCR("Maximum number of vnodes"), 350 sysctl_kern_maxvnodes, 0, NULL, 0, 351 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 352 sysctl_createv(clog, 0, NULL, NULL, 353 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 354 CTLTYPE_INT, "maxproc", 355 SYSCTL_DESCR("Maximum number of simultaneous processes"), 356 sysctl_kern_maxproc, 0, NULL, 0, 357 CTL_KERN, KERN_MAXPROC, CTL_EOL); 358 sysctl_createv(clog, 0, NULL, NULL, 359 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 360 CTLTYPE_INT, "maxfiles", 361 SYSCTL_DESCR("Maximum number of open files"), 362 NULL, 0, &maxfiles, 0, 363 CTL_KERN, KERN_MAXFILES, CTL_EOL); 364 sysctl_createv(clog, 0, NULL, NULL, 365 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 366 CTLTYPE_INT, "argmax", 367 SYSCTL_DESCR("Maximum number of bytes of arguments to " 368 "execve(2)"), 369 NULL, ARG_MAX, NULL, 0, 370 CTL_KERN, KERN_ARGMAX, CTL_EOL); 371 sysctl_createv(clog, 0, NULL, NULL, 372 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 373 CTLTYPE_STRING, "hostname", 374 SYSCTL_DESCR("System hostname"), 375 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 376 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 377 sysctl_createv(clog, 0, NULL, NULL, 378 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 379 CTLTYPE_INT, "hostid", 380 SYSCTL_DESCR("System host ID number"), 381 sysctl_kern_hostid, 0, NULL, 0, 382 CTL_KERN, KERN_HOSTID, CTL_EOL); 383 sysctl_createv(clog, 0, NULL, NULL, 384 CTLFLAG_PERMANENT, 385 CTLTYPE_STRUCT, "clockrate", 386 SYSCTL_DESCR("Kernel clock rates"), 387 sysctl_kern_clockrate, 0, NULL, 388 sizeof(struct clockinfo), 389 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 390 sysctl_createv(clog, 0, NULL, NULL, 391 CTLFLAG_PERMANENT, 392 CTLTYPE_INT, "hardclock_ticks", 393 SYSCTL_DESCR("Number of hardclock ticks"), 394 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 395 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 396 sysctl_createv(clog, 0, NULL, NULL, 397 CTLFLAG_PERMANENT, 398 CTLTYPE_STRUCT, "vnode", 399 SYSCTL_DESCR("System vnode table"), 400 sysctl_kern_vnode, 0, NULL, 0, 401 CTL_KERN, KERN_VNODE, CTL_EOL); 402 sysctl_createv(clog, 0, NULL, NULL, 403 CTLFLAG_PERMANENT, 404 CTLTYPE_STRUCT, "file", 405 SYSCTL_DESCR("System open file table"), 406 sysctl_kern_file, 0, NULL, 0, 407 CTL_KERN, KERN_FILE, CTL_EOL); 408 #ifndef GPROF 409 sysctl_createv(clog, 0, NULL, NULL, 410 CTLFLAG_PERMANENT, 411 CTLTYPE_NODE, "profiling", 412 SYSCTL_DESCR("Profiling information (not available)"), 413 sysctl_notavail, 0, NULL, 0, 414 CTL_KERN, KERN_PROF, CTL_EOL); 415 #endif 416 sysctl_createv(clog, 0, NULL, NULL, 417 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 418 CTLTYPE_INT, "posix1version", 419 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 420 "with which the operating system attempts " 421 "to comply"), 422 NULL, _POSIX_VERSION, NULL, 0, 423 CTL_KERN, KERN_POSIX1, CTL_EOL); 424 sysctl_createv(clog, 0, NULL, NULL, 425 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 426 CTLTYPE_INT, "ngroups", 427 SYSCTL_DESCR("Maximum number of supplemental groups"), 428 NULL, NGROUPS_MAX, NULL, 0, 429 CTL_KERN, KERN_NGROUPS, CTL_EOL); 430 sysctl_createv(clog, 0, NULL, NULL, 431 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 432 CTLTYPE_INT, "job_control", 433 SYSCTL_DESCR("Whether job control is available"), 434 NULL, 1, NULL, 0, 435 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 436 sysctl_createv(clog, 0, NULL, NULL, 437 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 438 CTLTYPE_INT, "saved_ids", 439 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 440 "available"), NULL, 441 #ifdef _POSIX_SAVED_IDS 442 1, 443 #else /* _POSIX_SAVED_IDS */ 444 0, 445 #endif /* _POSIX_SAVED_IDS */ 446 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 447 sysctl_createv(clog, 0, NULL, NULL, 448 CTLFLAG_PERMANENT, 449 CTLTYPE_STRUCT, "boottime", 450 SYSCTL_DESCR("System boot time"), 451 NULL, 0, &boottime, sizeof(boottime), 452 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 453 #ifdef COMPAT_50 454 { 455 extern struct timeval50 boottime50; 456 sysctl_createv(clog, 0, NULL, NULL, 457 CTLFLAG_PERMANENT, 458 CTLTYPE_STRUCT, "oboottime", 459 SYSCTL_DESCR("System boot time"), 460 NULL, 0, &boottime50, sizeof(boottime50), 461 CTL_KERN, KERN_OBOOTTIME, CTL_EOL); 462 } 463 #endif 464 sysctl_createv(clog, 0, NULL, NULL, 465 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 466 CTLTYPE_STRING, "domainname", 467 SYSCTL_DESCR("YP domain name"), 468 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 469 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 470 sysctl_createv(clog, 0, NULL, NULL, 471 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 472 CTLTYPE_INT, "maxpartitions", 473 SYSCTL_DESCR("Maximum number of partitions allowed per " 474 "disk"), 475 NULL, MAXPARTITIONS, NULL, 0, 476 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 477 sysctl_createv(clog, 0, NULL, NULL, 478 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 479 CTLTYPE_INT, "rawpartition", 480 SYSCTL_DESCR("Raw partition of a disk"), 481 NULL, RAW_PART, NULL, 0, 482 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 483 sysctl_createv(clog, 0, NULL, NULL, 484 CTLFLAG_PERMANENT, 485 CTLTYPE_STRUCT, "timex", NULL, 486 sysctl_notavail, 0, NULL, 0, 487 CTL_KERN, KERN_TIMEX, CTL_EOL); 488 sysctl_createv(clog, 0, NULL, NULL, 489 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 490 CTLTYPE_INT, "rtc_offset", 491 SYSCTL_DESCR("Offset of real time clock from UTC in " 492 "minutes"), 493 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 494 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 495 sysctl_createv(clog, 0, NULL, NULL, 496 CTLFLAG_PERMANENT, 497 CTLTYPE_STRING, "root_device", 498 SYSCTL_DESCR("Name of the root device"), 499 sysctl_root_device, 0, NULL, 0, 500 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 501 sysctl_createv(clog, 0, NULL, NULL, 502 CTLFLAG_PERMANENT, 503 CTLTYPE_INT, "msgbufsize", 504 SYSCTL_DESCR("Size of the kernel message buffer"), 505 sysctl_msgbuf, 0, NULL, 0, 506 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 507 sysctl_createv(clog, 0, NULL, NULL, 508 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 509 CTLTYPE_INT, "fsync", 510 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 511 "Synchronization Option is available on " 512 "this system"), 513 NULL, 1, NULL, 0, 514 CTL_KERN, KERN_FSYNC, CTL_EOL); 515 sysctl_createv(clog, 0, NULL, NULL, 516 CTLFLAG_PERMANENT, 517 CTLTYPE_NODE, "ipc", 518 SYSCTL_DESCR("SysV IPC options"), 519 NULL, 0, NULL, 0, 520 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 521 sysctl_createv(clog, 0, NULL, NULL, 522 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 523 CTLTYPE_INT, "sysvmsg", 524 SYSCTL_DESCR("System V style message support available"), 525 NULL, 526 #ifdef SYSVMSG 527 1, 528 #else /* SYSVMSG */ 529 0, 530 #endif /* SYSVMSG */ 531 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 532 sysctl_createv(clog, 0, NULL, NULL, 533 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 534 CTLTYPE_INT, "sysvsem", 535 SYSCTL_DESCR("System V style semaphore support " 536 "available"), NULL, 537 #ifdef SYSVSEM 538 1, 539 #else /* SYSVSEM */ 540 0, 541 #endif /* SYSVSEM */ 542 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 543 sysctl_createv(clog, 0, NULL, NULL, 544 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 545 CTLTYPE_INT, "sysvshm", 546 SYSCTL_DESCR("System V style shared memory support " 547 "available"), NULL, 548 #ifdef SYSVSHM 549 1, 550 #else /* SYSVSHM */ 551 0, 552 #endif /* SYSVSHM */ 553 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 554 sysctl_createv(clog, 0, NULL, NULL, 555 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 556 CTLTYPE_INT, "synchronized_io", 557 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 558 "I/O Option is available on this system"), 559 NULL, 1, NULL, 0, 560 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 561 sysctl_createv(clog, 0, NULL, NULL, 562 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 563 CTLTYPE_INT, "iov_max", 564 SYSCTL_DESCR("Maximum number of iovec structures per " 565 "process"), 566 NULL, IOV_MAX, NULL, 0, 567 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 568 sysctl_createv(clog, 0, NULL, NULL, 569 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 570 CTLTYPE_INT, "mapped_files", 571 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 572 "Files Option is available on this system"), 573 NULL, 1, NULL, 0, 574 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 575 sysctl_createv(clog, 0, NULL, NULL, 576 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 577 CTLTYPE_INT, "memlock", 578 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 579 "Locking Option is available on this " 580 "system"), 581 NULL, 1, NULL, 0, 582 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 583 sysctl_createv(clog, 0, NULL, NULL, 584 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 585 CTLTYPE_INT, "memlock_range", 586 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 587 "Locking Option is available on this " 588 "system"), 589 NULL, 1, NULL, 0, 590 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 591 sysctl_createv(clog, 0, NULL, NULL, 592 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 593 CTLTYPE_INT, "memory_protection", 594 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 595 "Protection Option is available on this " 596 "system"), 597 NULL, 1, NULL, 0, 598 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 599 sysctl_createv(clog, 0, NULL, NULL, 600 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 601 CTLTYPE_INT, "login_name_max", 602 SYSCTL_DESCR("Maximum login name length"), 603 NULL, LOGIN_NAME_MAX, NULL, 0, 604 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 605 sysctl_createv(clog, 0, NULL, NULL, 606 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 607 CTLTYPE_STRING, "defcorename", 608 SYSCTL_DESCR("Default core file name"), 609 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 610 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 611 sysctl_createv(clog, 0, NULL, NULL, 612 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 613 CTLTYPE_INT, "logsigexit", 614 SYSCTL_DESCR("Log process exit when caused by signals"), 615 NULL, 0, &kern_logsigexit, 0, 616 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 617 sysctl_createv(clog, 0, NULL, NULL, 618 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 619 CTLTYPE_INT, "fscale", 620 SYSCTL_DESCR("Kernel fixed-point scale factor"), 621 NULL, FSCALE, NULL, 0, 622 CTL_KERN, KERN_FSCALE, CTL_EOL); 623 sysctl_createv(clog, 0, NULL, NULL, 624 CTLFLAG_PERMANENT, 625 CTLTYPE_INT, "ccpu", 626 SYSCTL_DESCR("Scheduler exponential decay value"), 627 NULL, 0, &ccpu, 0, 628 CTL_KERN, KERN_CCPU, CTL_EOL); 629 sysctl_createv(clog, 0, NULL, NULL, 630 CTLFLAG_PERMANENT, 631 CTLTYPE_STRUCT, "cp_time", 632 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 633 sysctl_kern_cptime, 0, NULL, 0, 634 CTL_KERN, KERN_CP_TIME, CTL_EOL); 635 sysctl_createv(clog, 0, NULL, NULL, 636 CTLFLAG_PERMANENT, 637 CTLTYPE_INT, "msgbuf", 638 SYSCTL_DESCR("Kernel message buffer"), 639 sysctl_msgbuf, 0, NULL, 0, 640 CTL_KERN, KERN_MSGBUF, CTL_EOL); 641 sysctl_createv(clog, 0, NULL, NULL, 642 CTLFLAG_PERMANENT, 643 CTLTYPE_STRUCT, "consdev", 644 SYSCTL_DESCR("Console device"), 645 sysctl_consdev, 0, NULL, sizeof(dev_t), 646 CTL_KERN, KERN_CONSDEV, CTL_EOL); 647 #if NPTY > 0 648 sysctl_createv(clog, 0, NULL, NULL, 649 CTLFLAG_PERMANENT, 650 CTLTYPE_INT, "maxptys", 651 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 652 sysctl_kern_maxptys, 0, NULL, 0, 653 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 654 #endif /* NPTY > 0 */ 655 sysctl_createv(clog, 0, NULL, NULL, 656 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 657 CTLTYPE_INT, "maxphys", 658 SYSCTL_DESCR("Maximum raw I/O transfer size"), 659 NULL, MAXPHYS, NULL, 0, 660 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 661 sysctl_createv(clog, 0, NULL, NULL, 662 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 663 CTLTYPE_INT, "sbmax", 664 SYSCTL_DESCR("Maximum socket buffer size"), 665 sysctl_kern_sbmax, 0, NULL, 0, 666 CTL_KERN, KERN_SBMAX, CTL_EOL); 667 sysctl_createv(clog, 0, NULL, NULL, 668 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 669 CTLTYPE_INT, "monotonic_clock", 670 SYSCTL_DESCR("Implementation version of the POSIX " 671 "1003.1b Monotonic Clock Option"), 672 /* XXX _POSIX_VERSION */ 673 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 674 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 675 sysctl_createv(clog, 0, NULL, NULL, 676 CTLFLAG_PERMANENT, 677 CTLTYPE_INT, "urandom", 678 SYSCTL_DESCR("Random integer value"), 679 sysctl_kern_urnd, 0, NULL, 0, 680 CTL_KERN, KERN_URND, CTL_EOL); 681 sysctl_createv(clog, 0, NULL, NULL, 682 CTLFLAG_PERMANENT, 683 CTLTYPE_INT, "arandom", 684 SYSCTL_DESCR("n bytes of random data"), 685 sysctl_kern_arnd, 0, NULL, 0, 686 CTL_KERN, KERN_ARND, CTL_EOL); 687 sysctl_createv(clog, 0, NULL, NULL, 688 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 689 CTLTYPE_INT, "labelsector", 690 SYSCTL_DESCR("Sector number containing the disklabel"), 691 NULL, LABELSECTOR, NULL, 0, 692 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 693 sysctl_createv(clog, 0, NULL, NULL, 694 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 695 CTLTYPE_INT, "labeloffset", 696 SYSCTL_DESCR("Offset of the disklabel within the " 697 "sector"), 698 NULL, LABELOFFSET, NULL, 0, 699 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 700 sysctl_createv(clog, 0, NULL, NULL, 701 CTLFLAG_PERMANENT, 702 CTLTYPE_NODE, "lwp", 703 SYSCTL_DESCR("System-wide LWP information"), 704 sysctl_kern_lwp, 0, NULL, 0, 705 CTL_KERN, KERN_LWP, CTL_EOL); 706 sysctl_createv(clog, 0, NULL, NULL, 707 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 708 CTLTYPE_INT, "forkfsleep", 709 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 710 "to process limits"), 711 sysctl_kern_forkfsleep, 0, NULL, 0, 712 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 713 sysctl_createv(clog, 0, NULL, NULL, 714 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 715 CTLTYPE_INT, "posix_threads", 716 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 717 "Threads option to which the system " 718 "attempts to conform"), 719 /* XXX _POSIX_VERSION */ 720 NULL, _POSIX_THREADS, NULL, 0, 721 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 722 sysctl_createv(clog, 0, NULL, NULL, 723 CTLFLAG_PERMANENT, 724 CTLTYPE_INT, "posix_semaphores", 725 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 726 "Semaphores option to which the system " 727 "attempts to conform"), NULL, 728 0, &posix_semaphores, 729 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 730 sysctl_createv(clog, 0, NULL, NULL, 731 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 732 CTLTYPE_INT, "posix_barriers", 733 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 734 "Barriers option to which the system " 735 "attempts to conform"), 736 /* XXX _POSIX_VERSION */ 737 NULL, _POSIX_BARRIERS, NULL, 0, 738 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 739 sysctl_createv(clog, 0, NULL, NULL, 740 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 741 CTLTYPE_INT, "posix_timers", 742 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 743 "Timers option to which the system " 744 "attempts to conform"), 745 /* XXX _POSIX_VERSION */ 746 NULL, _POSIX_TIMERS, NULL, 0, 747 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 748 sysctl_createv(clog, 0, NULL, NULL, 749 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 750 CTLTYPE_INT, "posix_spin_locks", 751 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 752 "Locks option to which the system attempts " 753 "to conform"), 754 /* XXX _POSIX_VERSION */ 755 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 756 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 757 sysctl_createv(clog, 0, NULL, NULL, 758 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 759 CTLTYPE_INT, "posix_reader_writer_locks", 760 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 761 "Read-Write Locks option to which the " 762 "system attempts to conform"), 763 /* XXX _POSIX_VERSION */ 764 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 765 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 766 sysctl_createv(clog, 0, NULL, NULL, 767 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 768 CTLTYPE_INT, "dump_on_panic", 769 SYSCTL_DESCR("Perform a crash dump on system panic"), 770 NULL, 0, &dumponpanic, 0, 771 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 772 #ifdef DIAGNOSTIC 773 sysctl_createv(clog, 0, NULL, NULL, 774 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 775 CTLTYPE_INT, "panic_now", 776 SYSCTL_DESCR("Trigger a panic"), 777 sysctl_kern_trigger_panic, 0, NULL, 0, 778 CTL_KERN, CTL_CREATE, CTL_EOL); 779 #endif 780 sysctl_createv(clog, 0, NULL, NULL, 781 CTLFLAG_PERMANENT, 782 CTLTYPE_INT, "root_partition", 783 SYSCTL_DESCR("Root partition on the root device"), 784 sysctl_kern_root_partition, 0, NULL, 0, 785 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 786 sysctl_createv(clog, 0, NULL, NULL, 787 CTLFLAG_PERMANENT, 788 CTLTYPE_STRUCT, "drivers", 789 SYSCTL_DESCR("List of all drivers with block and " 790 "character device numbers"), 791 sysctl_kern_drivers, 0, NULL, 0, 792 CTL_KERN, KERN_DRIVERS, CTL_EOL); 793 sysctl_createv(clog, 0, NULL, NULL, 794 CTLFLAG_PERMANENT, 795 CTLTYPE_STRUCT, "file2", 796 SYSCTL_DESCR("System open file table"), 797 sysctl_kern_file2, 0, NULL, 0, 798 CTL_KERN, KERN_FILE2, CTL_EOL); 799 sysctl_createv(clog, 0, NULL, NULL, 800 CTLFLAG_PERMANENT, 801 CTLTYPE_STRUCT, "cp_id", 802 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 803 sysctl_kern_cpid, 0, NULL, 0, 804 CTL_KERN, KERN_CP_ID, CTL_EOL); 805 sysctl_createv(clog, 0, NULL, &rnode, 806 CTLFLAG_PERMANENT, 807 CTLTYPE_NODE, "coredump", 808 SYSCTL_DESCR("Coredump settings."), 809 NULL, 0, NULL, 0, 810 CTL_KERN, CTL_CREATE, CTL_EOL); 811 sysctl_createv(clog, 0, &rnode, &rnode, 812 CTLFLAG_PERMANENT, 813 CTLTYPE_NODE, "setid", 814 SYSCTL_DESCR("Set-id processes' coredump settings."), 815 NULL, 0, NULL, 0, 816 CTL_CREATE, CTL_EOL); 817 sysctl_createv(clog, 0, &rnode, NULL, 818 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 819 CTLTYPE_INT, "dump", 820 SYSCTL_DESCR("Allow set-id processes to dump core."), 821 sysctl_security_setidcore, 0, &security_setidcore_dump, 822 sizeof(security_setidcore_dump), 823 CTL_CREATE, CTL_EOL); 824 sysctl_createv(clog, 0, &rnode, NULL, 825 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 826 CTLTYPE_STRING, "path", 827 SYSCTL_DESCR("Path pattern for set-id coredumps."), 828 sysctl_security_setidcorename, 0, 829 &security_setidcore_path, 830 sizeof(security_setidcore_path), 831 CTL_CREATE, CTL_EOL); 832 sysctl_createv(clog, 0, &rnode, NULL, 833 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 834 CTLTYPE_INT, "owner", 835 SYSCTL_DESCR("Owner id for set-id processes' cores."), 836 sysctl_security_setidcore, 0, &security_setidcore_owner, 837 0, 838 CTL_CREATE, CTL_EOL); 839 sysctl_createv(clog, 0, &rnode, NULL, 840 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 841 CTLTYPE_INT, "group", 842 SYSCTL_DESCR("Group id for set-id processes' cores."), 843 sysctl_security_setidcore, 0, &security_setidcore_group, 844 0, 845 CTL_CREATE, CTL_EOL); 846 sysctl_createv(clog, 0, &rnode, NULL, 847 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 848 CTLTYPE_INT, "mode", 849 SYSCTL_DESCR("Mode for set-id processes' cores."), 850 sysctl_security_setidcore, 0, &security_setidcore_mode, 851 0, 852 CTL_CREATE, CTL_EOL); 853 #ifdef KERN_SA 854 sysctl_createv(clog, 0, NULL, NULL, 855 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 856 CTLTYPE_INT, "no_sa_support", 857 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 858 NULL, 0, &sa_system_disabled, 0, 859 CTL_KERN, CTL_CREATE, CTL_EOL); 860 #else 861 sysctl_createv(clog, 0, NULL, NULL, 862 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 863 CTLTYPE_INT, "no_sa_support", 864 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 865 NULL, 1, NULL, 0, 866 CTL_KERN, CTL_CREATE, CTL_EOL); 867 #endif 868 869 /* kern.posix. */ 870 sysctl_createv(clog, 0, NULL, &rnode, 871 CTLFLAG_PERMANENT, 872 CTLTYPE_NODE, "posix", 873 SYSCTL_DESCR("POSIX options"), 874 NULL, 0, NULL, 0, 875 CTL_KERN, CTL_CREATE, CTL_EOL); 876 sysctl_createv(clog, 0, &rnode, NULL, 877 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 878 CTLTYPE_INT, "semmax", 879 SYSCTL_DESCR("Maximal number of semaphores"), 880 NULL, 0, &ksem_max, 0, 881 CTL_CREATE, CTL_EOL); 882 } 883 884 SYSCTL_SETUP(sysctl_kern_proc_setup, 885 "sysctl kern.proc/proc2/proc_args subtree setup") 886 { 887 888 sysctl_createv(clog, 0, NULL, NULL, 889 CTLFLAG_PERMANENT, 890 CTLTYPE_NODE, "kern", NULL, 891 NULL, 0, NULL, 0, 892 CTL_KERN, CTL_EOL); 893 894 sysctl_createv(clog, 0, NULL, NULL, 895 CTLFLAG_PERMANENT, 896 CTLTYPE_NODE, "proc", 897 SYSCTL_DESCR("System-wide process information"), 898 sysctl_doeproc, 0, NULL, 0, 899 CTL_KERN, KERN_PROC, CTL_EOL); 900 sysctl_createv(clog, 0, NULL, NULL, 901 CTLFLAG_PERMANENT, 902 CTLTYPE_NODE, "proc2", 903 SYSCTL_DESCR("Machine-independent process information"), 904 sysctl_doeproc, 0, NULL, 0, 905 CTL_KERN, KERN_PROC2, CTL_EOL); 906 sysctl_createv(clog, 0, NULL, NULL, 907 CTLFLAG_PERMANENT, 908 CTLTYPE_NODE, "proc_args", 909 SYSCTL_DESCR("Process argument information"), 910 sysctl_kern_proc_args, 0, NULL, 0, 911 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 912 913 /* 914 "nodes" under these: 915 916 KERN_PROC_ALL 917 KERN_PROC_PID pid 918 KERN_PROC_PGRP pgrp 919 KERN_PROC_SESSION sess 920 KERN_PROC_TTY tty 921 KERN_PROC_UID uid 922 KERN_PROC_RUID uid 923 KERN_PROC_GID gid 924 KERN_PROC_RGID gid 925 926 all in all, probably not worth the effort... 927 */ 928 } 929 930 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 931 { 932 u_int u; 933 u_quad_t q; 934 935 sysctl_createv(clog, 0, NULL, NULL, 936 CTLFLAG_PERMANENT, 937 CTLTYPE_NODE, "hw", NULL, 938 NULL, 0, NULL, 0, 939 CTL_HW, CTL_EOL); 940 941 sysctl_createv(clog, 0, NULL, NULL, 942 CTLFLAG_PERMANENT, 943 CTLTYPE_STRING, "machine", 944 SYSCTL_DESCR("Machine class"), 945 NULL, 0, machine, 0, 946 CTL_HW, HW_MACHINE, CTL_EOL); 947 sysctl_createv(clog, 0, NULL, NULL, 948 CTLFLAG_PERMANENT, 949 CTLTYPE_STRING, "model", 950 SYSCTL_DESCR("Machine model"), 951 NULL, 0, cpu_model, 0, 952 CTL_HW, HW_MODEL, CTL_EOL); 953 sysctl_createv(clog, 0, NULL, NULL, 954 CTLFLAG_PERMANENT, 955 CTLTYPE_INT, "ncpu", 956 SYSCTL_DESCR("Number of CPUs configured"), 957 NULL, 0, &ncpu, 0, 958 CTL_HW, HW_NCPU, CTL_EOL); 959 sysctl_createv(clog, 0, NULL, NULL, 960 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 961 CTLTYPE_INT, "byteorder", 962 SYSCTL_DESCR("System byte order"), 963 NULL, BYTE_ORDER, NULL, 0, 964 CTL_HW, HW_BYTEORDER, CTL_EOL); 965 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 966 UINT_MAX : physmem * PAGE_SIZE; 967 sysctl_createv(clog, 0, NULL, NULL, 968 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 969 CTLTYPE_INT, "physmem", 970 SYSCTL_DESCR("Bytes of physical memory"), 971 NULL, u, NULL, 0, 972 CTL_HW, HW_PHYSMEM, CTL_EOL); 973 sysctl_createv(clog, 0, NULL, NULL, 974 CTLFLAG_PERMANENT, 975 CTLTYPE_INT, "usermem", 976 SYSCTL_DESCR("Bytes of non-kernel memory"), 977 sysctl_hw_usermem, 0, NULL, 0, 978 CTL_HW, HW_USERMEM, CTL_EOL); 979 sysctl_createv(clog, 0, NULL, NULL, 980 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 981 CTLTYPE_INT, "pagesize", 982 SYSCTL_DESCR("Software page size"), 983 NULL, PAGE_SIZE, NULL, 0, 984 CTL_HW, HW_PAGESIZE, CTL_EOL); 985 sysctl_createv(clog, 0, NULL, NULL, 986 CTLFLAG_PERMANENT, 987 CTLTYPE_STRING, "machine_arch", 988 SYSCTL_DESCR("Machine CPU class"), 989 NULL, 0, machine_arch, 0, 990 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 991 sysctl_createv(clog, 0, NULL, NULL, 992 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 993 CTLTYPE_INT, "alignbytes", 994 SYSCTL_DESCR("Alignment constraint for all possible " 995 "data types"), 996 NULL, ALIGNBYTES, NULL, 0, 997 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 998 sysctl_createv(clog, 0, NULL, NULL, 999 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 1000 CTLTYPE_STRING, "cnmagic", 1001 SYSCTL_DESCR("Console magic key sequence"), 1002 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 1003 CTL_HW, HW_CNMAGIC, CTL_EOL); 1004 q = (u_quad_t)physmem * PAGE_SIZE; 1005 sysctl_createv(clog, 0, NULL, NULL, 1006 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 1007 CTLTYPE_QUAD, "physmem64", 1008 SYSCTL_DESCR("Bytes of physical memory"), 1009 NULL, q, NULL, 0, 1010 CTL_HW, HW_PHYSMEM64, CTL_EOL); 1011 sysctl_createv(clog, 0, NULL, NULL, 1012 CTLFLAG_PERMANENT, 1013 CTLTYPE_QUAD, "usermem64", 1014 SYSCTL_DESCR("Bytes of non-kernel memory"), 1015 sysctl_hw_usermem, 0, NULL, 0, 1016 CTL_HW, HW_USERMEM64, CTL_EOL); 1017 sysctl_createv(clog, 0, NULL, NULL, 1018 CTLFLAG_PERMANENT, 1019 CTLTYPE_INT, "ncpuonline", 1020 SYSCTL_DESCR("Number of CPUs online"), 1021 NULL, 0, &ncpuonline, 0, 1022 CTL_HW, HW_NCPUONLINE, CTL_EOL); 1023 } 1024 1025 #ifdef DEBUG 1026 /* 1027 * Debugging related system variables. 1028 */ 1029 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 1030 struct ctldebug debug5, debug6, debug7, debug8, debug9; 1031 struct ctldebug debug10, debug11, debug12, debug13, debug14; 1032 struct ctldebug debug15, debug16, debug17, debug18, debug19; 1033 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 1034 &debug0, &debug1, &debug2, &debug3, &debug4, 1035 &debug5, &debug6, &debug7, &debug8, &debug9, 1036 &debug10, &debug11, &debug12, &debug13, &debug14, 1037 &debug15, &debug16, &debug17, &debug18, &debug19, 1038 }; 1039 1040 /* 1041 * this setup routine is a replacement for debug_sysctl() 1042 * 1043 * note that it creates several nodes per defined debug variable 1044 */ 1045 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 1046 { 1047 struct ctldebug *cdp; 1048 char nodename[20]; 1049 int i; 1050 1051 /* 1052 * two ways here: 1053 * 1054 * the "old" way (debug.name -> value) which was emulated by 1055 * the sysctl(8) binary 1056 * 1057 * the new way, which the sysctl(8) binary was actually using 1058 1059 node debug 1060 node debug.0 1061 string debug.0.name 1062 int debug.0.value 1063 int debug.name 1064 1065 */ 1066 1067 sysctl_createv(clog, 0, NULL, NULL, 1068 CTLFLAG_PERMANENT, 1069 CTLTYPE_NODE, "debug", NULL, 1070 NULL, 0, NULL, 0, 1071 CTL_DEBUG, CTL_EOL); 1072 1073 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 1074 cdp = debugvars[i]; 1075 if (cdp->debugname == NULL || cdp->debugvar == NULL) 1076 continue; 1077 1078 snprintf(nodename, sizeof(nodename), "debug%d", i); 1079 sysctl_createv(clog, 0, NULL, NULL, 1080 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1081 CTLTYPE_NODE, nodename, NULL, 1082 NULL, 0, NULL, 0, 1083 CTL_DEBUG, i, CTL_EOL); 1084 sysctl_createv(clog, 0, NULL, NULL, 1085 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1086 CTLTYPE_STRING, "name", NULL, 1087 /*XXXUNCONST*/ 1088 NULL, 0, __UNCONST(cdp->debugname), 0, 1089 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 1090 sysctl_createv(clog, 0, NULL, NULL, 1091 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1092 CTLTYPE_INT, "value", NULL, 1093 NULL, 0, cdp->debugvar, 0, 1094 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 1095 sysctl_createv(clog, 0, NULL, NULL, 1096 CTLFLAG_PERMANENT, 1097 CTLTYPE_INT, cdp->debugname, NULL, 1098 NULL, 0, cdp->debugvar, 0, 1099 CTL_DEBUG, CTL_CREATE, CTL_EOL); 1100 } 1101 } 1102 #endif /* DEBUG */ 1103 1104 /* 1105 * ******************************************************************** 1106 * section 2: private node-specific helper routines. 1107 * ******************************************************************** 1108 */ 1109 1110 #ifdef DIAGNOSTIC 1111 static int 1112 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 1113 { 1114 int newtrig, error; 1115 struct sysctlnode node; 1116 1117 newtrig = 0; 1118 node = *rnode; 1119 node.sysctl_data = &newtrig; 1120 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1121 if (error || newp == NULL) 1122 return (error); 1123 1124 if (newtrig != 0) 1125 panic("Panic triggered"); 1126 1127 return (error); 1128 } 1129 #endif 1130 1131 /* 1132 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 1133 * new value is lower than desiredvnodes and then calls reinit 1134 * routines that needs to adjust to the new value. 1135 */ 1136 static int 1137 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 1138 { 1139 int error, new_vnodes, old_vnodes, new_max; 1140 struct sysctlnode node; 1141 1142 new_vnodes = desiredvnodes; 1143 node = *rnode; 1144 node.sysctl_data = &new_vnodes; 1145 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1146 if (error || newp == NULL) 1147 return (error); 1148 1149 /* Limits: 75% of KVA and physical memory. */ 1150 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 1151 if (new_vnodes > new_max) 1152 new_vnodes = new_max; 1153 1154 old_vnodes = desiredvnodes; 1155 desiredvnodes = new_vnodes; 1156 if (new_vnodes < old_vnodes) { 1157 error = vfs_drainvnodes(new_vnodes, l); 1158 if (error) { 1159 desiredvnodes = old_vnodes; 1160 return (error); 1161 } 1162 } 1163 vfs_reinit(); 1164 nchreinit(); 1165 1166 return (0); 1167 } 1168 1169 /* 1170 * sysctl helper routine for rtc_offset - set time after changes 1171 */ 1172 static int 1173 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1174 { 1175 struct timespec ts, delta; 1176 int error, new_rtc_offset; 1177 struct sysctlnode node; 1178 1179 new_rtc_offset = rtc_offset; 1180 node = *rnode; 1181 node.sysctl_data = &new_rtc_offset; 1182 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1183 if (error || newp == NULL) 1184 return (error); 1185 1186 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1187 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1188 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1189 return (EPERM); 1190 if (rtc_offset == new_rtc_offset) 1191 return (0); 1192 1193 /* if we change the offset, adjust the time */ 1194 nanotime(&ts); 1195 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1196 delta.tv_nsec = 0; 1197 timespecadd(&ts, &delta, &ts); 1198 rtc_offset = new_rtc_offset; 1199 return (settime(l->l_proc, &ts)); 1200 } 1201 1202 /* 1203 * sysctl helper routine for kern.maxproc. Ensures that the new 1204 * values are not too low or too high. 1205 */ 1206 static int 1207 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1208 { 1209 int error, nmaxproc; 1210 struct sysctlnode node; 1211 1212 nmaxproc = maxproc; 1213 node = *rnode; 1214 node.sysctl_data = &nmaxproc; 1215 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1216 if (error || newp == NULL) 1217 return (error); 1218 1219 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1220 return (EINVAL); 1221 #ifdef __HAVE_CPU_MAXPROC 1222 if (nmaxproc > cpu_maxproc()) 1223 return (EINVAL); 1224 #endif 1225 maxproc = nmaxproc; 1226 1227 return (0); 1228 } 1229 1230 /* 1231 * sysctl helper function for kern.hostid. The hostid is a long, but 1232 * we export it as an int, so we need to give it a little help. 1233 */ 1234 static int 1235 sysctl_kern_hostid(SYSCTLFN_ARGS) 1236 { 1237 int error, inthostid; 1238 struct sysctlnode node; 1239 1240 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1241 node = *rnode; 1242 node.sysctl_data = &inthostid; 1243 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1244 if (error || newp == NULL) 1245 return (error); 1246 1247 hostid = (unsigned)inthostid; 1248 1249 return (0); 1250 } 1251 1252 /* 1253 * sysctl helper function for kern.hostname and kern.domainnname. 1254 * resets the relevant recorded length when the underlying name is 1255 * changed. 1256 */ 1257 static int 1258 sysctl_setlen(SYSCTLFN_ARGS) 1259 { 1260 int error; 1261 1262 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1263 if (error || newp == NULL) 1264 return (error); 1265 1266 switch (rnode->sysctl_num) { 1267 case KERN_HOSTNAME: 1268 hostnamelen = strlen((const char*)rnode->sysctl_data); 1269 break; 1270 case KERN_DOMAINNAME: 1271 domainnamelen = strlen((const char*)rnode->sysctl_data); 1272 break; 1273 } 1274 1275 return (0); 1276 } 1277 1278 /* 1279 * sysctl helper routine for kern.clockrate. Assembles a struct on 1280 * the fly to be returned to the caller. 1281 */ 1282 static int 1283 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1284 { 1285 struct clockinfo clkinfo; 1286 struct sysctlnode node; 1287 1288 clkinfo.tick = tick; 1289 clkinfo.tickadj = tickadj; 1290 clkinfo.hz = hz; 1291 clkinfo.profhz = profhz; 1292 clkinfo.stathz = stathz ? stathz : hz; 1293 1294 node = *rnode; 1295 node.sysctl_data = &clkinfo; 1296 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1297 } 1298 1299 1300 /* 1301 * sysctl helper routine for kern.file pseudo-subtree. 1302 */ 1303 static int 1304 sysctl_kern_file(SYSCTLFN_ARGS) 1305 { 1306 int error; 1307 size_t buflen; 1308 struct file *fp, *dp, *np, fbuf; 1309 char *start, *where; 1310 1311 start = where = oldp; 1312 buflen = *oldlenp; 1313 dp = NULL; 1314 1315 if (where == NULL) { 1316 /* 1317 * overestimate by 10 files 1318 */ 1319 *oldlenp = sizeof(filehead) + (nfiles + 10) * 1320 sizeof(struct file); 1321 return (0); 1322 } 1323 1324 /* 1325 * first dcopyout filehead 1326 */ 1327 if (buflen < sizeof(filehead)) { 1328 *oldlenp = 0; 1329 return (0); 1330 } 1331 sysctl_unlock(); 1332 error = dcopyout(l, &filehead, where, sizeof(filehead)); 1333 if (error) { 1334 sysctl_relock(); 1335 return error; 1336 } 1337 buflen -= sizeof(filehead); 1338 where += sizeof(filehead); 1339 1340 /* 1341 * allocate dummy file descriptor to make position in list 1342 */ 1343 if ((dp = fgetdummy()) == NULL) { 1344 sysctl_relock(); 1345 return ENOMEM; 1346 } 1347 1348 /* 1349 * followed by an array of file structures 1350 */ 1351 mutex_enter(&filelist_lock); 1352 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1353 np = LIST_NEXT(fp, f_list); 1354 mutex_enter(&fp->f_lock); 1355 if (fp->f_count == 0) { 1356 mutex_exit(&fp->f_lock); 1357 continue; 1358 } 1359 /* 1360 * XXX Need to prevent that from being an alternative way 1361 * XXX to getting process information. 1362 */ 1363 if (kauth_authorize_generic(l->l_cred, 1364 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 1365 mutex_exit(&fp->f_lock); 1366 continue; 1367 } 1368 if (buflen < sizeof(struct file)) { 1369 *oldlenp = where - start; 1370 mutex_exit(&fp->f_lock); 1371 error = ENOMEM; 1372 break; 1373 } 1374 memcpy(&fbuf, fp, sizeof(fbuf)); 1375 LIST_INSERT_AFTER(fp, dp, f_list); 1376 mutex_exit(&fp->f_lock); 1377 mutex_exit(&filelist_lock); 1378 error = dcopyout(l, &fbuf, where, sizeof(fbuf)); 1379 if (error) { 1380 mutex_enter(&filelist_lock); 1381 LIST_REMOVE(dp, f_list); 1382 break; 1383 } 1384 buflen -= sizeof(struct file); 1385 where += sizeof(struct file); 1386 mutex_enter(&filelist_lock); 1387 np = LIST_NEXT(dp, f_list); 1388 LIST_REMOVE(dp, f_list); 1389 } 1390 mutex_exit(&filelist_lock); 1391 *oldlenp = where - start; 1392 if (dp != NULL) 1393 fputdummy(dp); 1394 sysctl_relock(); 1395 return (error); 1396 } 1397 1398 /* 1399 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1400 * former it merely checks the message buffer is set up. For the latter, 1401 * it also copies out the data if necessary. 1402 */ 1403 static int 1404 sysctl_msgbuf(SYSCTLFN_ARGS) 1405 { 1406 char *where = oldp; 1407 size_t len, maxlen; 1408 long beg, end; 1409 extern kmutex_t log_lock; 1410 int error; 1411 1412 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1413 msgbufenabled = 0; 1414 return (ENXIO); 1415 } 1416 1417 switch (rnode->sysctl_num) { 1418 case KERN_MSGBUFSIZE: { 1419 struct sysctlnode node = *rnode; 1420 int msg_bufs = (int)msgbufp->msg_bufs; 1421 node.sysctl_data = &msg_bufs; 1422 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1423 } 1424 case KERN_MSGBUF: 1425 break; 1426 default: 1427 return (EOPNOTSUPP); 1428 } 1429 1430 if (newp != NULL) 1431 return (EPERM); 1432 1433 if (oldp == NULL) { 1434 /* always return full buffer size */ 1435 *oldlenp = msgbufp->msg_bufs; 1436 return (0); 1437 } 1438 1439 sysctl_unlock(); 1440 1441 /* 1442 * First, copy from the write pointer to the end of 1443 * message buffer. 1444 */ 1445 error = 0; 1446 mutex_spin_enter(&log_lock); 1447 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1448 beg = msgbufp->msg_bufx; 1449 end = msgbufp->msg_bufs; 1450 mutex_spin_exit(&log_lock); 1451 1452 while (maxlen > 0) { 1453 len = MIN(end - beg, maxlen); 1454 if (len == 0) 1455 break; 1456 /* XXX unlocked, but hardly matters. */ 1457 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1458 if (error) 1459 break; 1460 where += len; 1461 maxlen -= len; 1462 1463 /* 1464 * ... then, copy from the beginning of message buffer to 1465 * the write pointer. 1466 */ 1467 beg = 0; 1468 end = msgbufp->msg_bufx; 1469 } 1470 1471 sysctl_relock(); 1472 return (error); 1473 } 1474 1475 /* 1476 * sysctl helper routine for kern.defcorename. In the case of a new 1477 * string being assigned, check that it's not a zero-length string. 1478 * (XXX the check in -current doesn't work, but do we really care?) 1479 */ 1480 static int 1481 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1482 { 1483 int error; 1484 char *newcorename; 1485 struct sysctlnode node; 1486 1487 newcorename = PNBUF_GET(); 1488 node = *rnode; 1489 node.sysctl_data = &newcorename[0]; 1490 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1491 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1492 if (error || newp == NULL) { 1493 goto done; 1494 } 1495 1496 /* 1497 * when sysctl_lookup() deals with a string, it's guaranteed 1498 * to come back nul terminated. So there. :) 1499 */ 1500 if (strlen(newcorename) == 0) { 1501 error = EINVAL; 1502 } else { 1503 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1504 error = 0; 1505 } 1506 done: 1507 PNBUF_PUT(newcorename); 1508 return error; 1509 } 1510 1511 /* 1512 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1513 * across all cpus. 1514 */ 1515 static int 1516 sysctl_kern_cptime(SYSCTLFN_ARGS) 1517 { 1518 struct sysctlnode node = *rnode; 1519 uint64_t *cp_time = NULL; 1520 int error, n = ncpu, i; 1521 struct cpu_info *ci; 1522 CPU_INFO_ITERATOR cii; 1523 1524 /* 1525 * if you specifically pass a buffer that is the size of the 1526 * sum, or if you are probing for the size, you get the "sum" 1527 * of cp_time (and the size thereof) across all processors. 1528 * 1529 * alternately, you can pass an additional mib number and get 1530 * cp_time for that particular processor. 1531 */ 1532 switch (namelen) { 1533 case 0: 1534 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1535 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1536 n = -1; /* SUM */ 1537 } 1538 else { 1539 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1540 n = -2; /* ALL */ 1541 } 1542 break; 1543 case 1: 1544 if (name[0] < 0 || name[0] >= n) 1545 return (ENOENT); /* ENOSUCHPROCESSOR */ 1546 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1547 n = name[0]; 1548 /* 1549 * adjust these so that sysctl_lookup() will be happy 1550 */ 1551 name++; 1552 namelen--; 1553 break; 1554 default: 1555 return (EINVAL); 1556 } 1557 1558 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1559 if (cp_time == NULL) 1560 return (ENOMEM); 1561 node.sysctl_data = cp_time; 1562 memset(cp_time, 0, node.sysctl_size); 1563 1564 for (CPU_INFO_FOREACH(cii, ci)) { 1565 if (n <= 0) { 1566 for (i = 0; i < CPUSTATES; i++) { 1567 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1568 } 1569 } 1570 /* 1571 * if a specific processor was requested and we just 1572 * did it, we're done here 1573 */ 1574 if (n == 0) 1575 break; 1576 /* 1577 * if doing "all", skip to next cp_time set for next processor 1578 */ 1579 if (n == -2) 1580 cp_time += CPUSTATES; 1581 /* 1582 * if we're doing a specific processor, we're one 1583 * processor closer 1584 */ 1585 if (n > 0) 1586 n--; 1587 } 1588 1589 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1590 kmem_free(node.sysctl_data, node.sysctl_size); 1591 return (error); 1592 } 1593 1594 #if NPTY > 0 1595 /* 1596 * sysctl helper routine for kern.maxptys. Ensures that any new value 1597 * is acceptable to the pty subsystem. 1598 */ 1599 static int 1600 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1601 { 1602 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1603 int error, xmax; 1604 struct sysctlnode node; 1605 1606 /* get current value of maxptys */ 1607 xmax = pty_maxptys(0, 0); 1608 1609 node = *rnode; 1610 node.sysctl_data = &xmax; 1611 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1612 if (error || newp == NULL) 1613 return (error); 1614 1615 if (xmax != pty_maxptys(xmax, 1)) 1616 return (EINVAL); 1617 1618 return (0); 1619 } 1620 #endif /* NPTY > 0 */ 1621 1622 /* 1623 * sysctl helper routine for kern.sbmax. Basically just ensures that 1624 * any new value is not too small. 1625 */ 1626 static int 1627 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1628 { 1629 int error, new_sbmax; 1630 struct sysctlnode node; 1631 1632 new_sbmax = sb_max; 1633 node = *rnode; 1634 node.sysctl_data = &new_sbmax; 1635 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1636 if (error || newp == NULL) 1637 return (error); 1638 1639 KERNEL_LOCK(1, NULL); 1640 error = sb_max_set(new_sbmax); 1641 KERNEL_UNLOCK_ONE(NULL); 1642 1643 return (error); 1644 } 1645 1646 /* 1647 * sysctl helper routine for kern.urandom node. Picks a random number 1648 * for you. 1649 */ 1650 static int 1651 sysctl_kern_urnd(SYSCTLFN_ARGS) 1652 { 1653 #if NRND > 0 1654 int v, rv; 1655 1656 KERNEL_LOCK(1, NULL); 1657 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1658 KERNEL_UNLOCK_ONE(NULL); 1659 if (rv == sizeof(v)) { 1660 struct sysctlnode node = *rnode; 1661 node.sysctl_data = &v; 1662 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1663 } 1664 else 1665 return (EIO); /*XXX*/ 1666 #else 1667 return (EOPNOTSUPP); 1668 #endif 1669 } 1670 1671 /* 1672 * sysctl helper routine for kern.arandom node. Picks a random number 1673 * for you. 1674 */ 1675 static int 1676 sysctl_kern_arnd(SYSCTLFN_ARGS) 1677 { 1678 #if NRND > 0 1679 int error; 1680 void *v; 1681 struct sysctlnode node = *rnode; 1682 1683 if (*oldlenp == 0) 1684 return 0; 1685 if (*oldlenp > 8192) 1686 return E2BIG; 1687 1688 v = kmem_alloc(*oldlenp, KM_SLEEP); 1689 arc4randbytes(v, *oldlenp); 1690 node.sysctl_data = v; 1691 node.sysctl_size = *oldlenp; 1692 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1693 kmem_free(v, *oldlenp); 1694 return error; 1695 #else 1696 return (EOPNOTSUPP); 1697 #endif 1698 } 1699 /* 1700 * sysctl helper routine to do kern.lwp.* work. 1701 */ 1702 static int 1703 sysctl_kern_lwp(SYSCTLFN_ARGS) 1704 { 1705 struct kinfo_lwp klwp; 1706 struct proc *p; 1707 struct lwp *l2, *l3; 1708 char *where, *dp; 1709 int pid, elem_size, elem_count; 1710 int buflen, needed, error; 1711 bool gotit; 1712 1713 if (namelen == 1 && name[0] == CTL_QUERY) 1714 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1715 1716 dp = where = oldp; 1717 buflen = where != NULL ? *oldlenp : 0; 1718 error = needed = 0; 1719 1720 if (newp != NULL || namelen != 3) 1721 return (EINVAL); 1722 pid = name[0]; 1723 elem_size = name[1]; 1724 elem_count = name[2]; 1725 1726 sysctl_unlock(); 1727 if (pid == -1) { 1728 mutex_enter(proc_lock); 1729 LIST_FOREACH(p, &allproc, p_list) { 1730 /* Grab a hold on the process. */ 1731 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1732 continue; 1733 } 1734 mutex_exit(proc_lock); 1735 1736 mutex_enter(p->p_lock); 1737 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1738 if (buflen >= elem_size && elem_count > 0) { 1739 lwp_lock(l2); 1740 fill_lwp(l2, &klwp); 1741 lwp_unlock(l2); 1742 mutex_exit(p->p_lock); 1743 1744 /* 1745 * Copy out elem_size, but not 1746 * larger than the size of a 1747 * struct kinfo_proc2. 1748 */ 1749 error = dcopyout(l, &klwp, dp, 1750 min(sizeof(klwp), elem_size)); 1751 if (error) { 1752 rw_exit(&p->p_reflock); 1753 goto cleanup; 1754 } 1755 mutex_enter(p->p_lock); 1756 LIST_FOREACH(l3, &p->p_lwps, 1757 l_sibling) { 1758 if (l2 == l3) 1759 break; 1760 } 1761 if (l3 == NULL) { 1762 mutex_exit(p->p_lock); 1763 rw_exit(&p->p_reflock); 1764 error = EAGAIN; 1765 goto cleanup; 1766 } 1767 dp += elem_size; 1768 buflen -= elem_size; 1769 elem_count--; 1770 } 1771 needed += elem_size; 1772 } 1773 mutex_exit(p->p_lock); 1774 1775 /* Drop reference to process. */ 1776 mutex_enter(proc_lock); 1777 rw_exit(&p->p_reflock); 1778 } 1779 mutex_exit(proc_lock); 1780 } else { 1781 mutex_enter(proc_lock); 1782 p = p_find(pid, PFIND_LOCKED); 1783 if (p == NULL) { 1784 error = ESRCH; 1785 mutex_exit(proc_lock); 1786 goto cleanup; 1787 } 1788 /* Grab a hold on the process. */ 1789 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1790 mutex_exit(proc_lock); 1791 if (!gotit) { 1792 error = ESRCH; 1793 goto cleanup; 1794 } 1795 1796 mutex_enter(p->p_lock); 1797 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1798 if (buflen >= elem_size && elem_count > 0) { 1799 lwp_lock(l2); 1800 fill_lwp(l2, &klwp); 1801 lwp_unlock(l2); 1802 mutex_exit(p->p_lock); 1803 /* 1804 * Copy out elem_size, but not larger than 1805 * the size of a struct kinfo_proc2. 1806 */ 1807 error = dcopyout(l, &klwp, dp, 1808 min(sizeof(klwp), elem_size)); 1809 if (error) { 1810 rw_exit(&p->p_reflock); 1811 goto cleanup; 1812 } 1813 mutex_enter(p->p_lock); 1814 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1815 if (l2 == l3) 1816 break; 1817 } 1818 if (l3 == NULL) { 1819 mutex_exit(p->p_lock); 1820 rw_exit(&p->p_reflock); 1821 error = EAGAIN; 1822 goto cleanup; 1823 } 1824 dp += elem_size; 1825 buflen -= elem_size; 1826 elem_count--; 1827 } 1828 needed += elem_size; 1829 } 1830 mutex_exit(p->p_lock); 1831 1832 /* Drop reference to process. */ 1833 rw_exit(&p->p_reflock); 1834 } 1835 1836 if (where != NULL) { 1837 *oldlenp = dp - where; 1838 if (needed > *oldlenp) { 1839 sysctl_relock(); 1840 return (ENOMEM); 1841 } 1842 } else { 1843 needed += KERN_LWPSLOP; 1844 *oldlenp = needed; 1845 } 1846 error = 0; 1847 cleanup: 1848 sysctl_relock(); 1849 return (error); 1850 } 1851 1852 /* 1853 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1854 * given value is not too large or two small, and is at least one 1855 * timer tick if not zero. 1856 */ 1857 static int 1858 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1859 { 1860 /* userland sees value in ms, internally is in ticks */ 1861 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1862 int error, timo, lsleep; 1863 struct sysctlnode node; 1864 1865 lsleep = forkfsleep * 1000 / hz; 1866 node = *rnode; 1867 node.sysctl_data = &lsleep; 1868 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1869 if (error || newp == NULL) 1870 return (error); 1871 1872 /* refuse negative values, and overly 'long time' */ 1873 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1874 return (EINVAL); 1875 1876 timo = mstohz(lsleep); 1877 1878 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1879 if (lsleep != 0 && timo == 0) 1880 forkfsleep = 1; 1881 else 1882 forkfsleep = timo; 1883 1884 return (0); 1885 } 1886 1887 /* 1888 * sysctl helper routine for kern.root_partition 1889 */ 1890 static int 1891 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1892 { 1893 int rootpart = DISKPART(rootdev); 1894 struct sysctlnode node = *rnode; 1895 1896 node.sysctl_data = &rootpart; 1897 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1898 } 1899 1900 /* 1901 * sysctl helper function for kern.drivers 1902 */ 1903 static int 1904 sysctl_kern_drivers(SYSCTLFN_ARGS) 1905 { 1906 int error; 1907 size_t buflen; 1908 struct kinfo_drivers kd; 1909 char *start, *where; 1910 const char *dname; 1911 int i; 1912 extern struct devsw_conv *devsw_conv; 1913 extern int max_devsw_convs; 1914 1915 if (newp != NULL || namelen != 0) 1916 return (EINVAL); 1917 1918 start = where = oldp; 1919 buflen = *oldlenp; 1920 if (where == NULL) { 1921 *oldlenp = max_devsw_convs * sizeof kd; 1922 return 0; 1923 } 1924 1925 /* 1926 * An array of kinfo_drivers structures 1927 */ 1928 error = 0; 1929 sysctl_unlock(); 1930 mutex_enter(&device_lock); 1931 for (i = 0; i < max_devsw_convs; i++) { 1932 dname = devsw_conv[i].d_name; 1933 if (dname == NULL) 1934 continue; 1935 if (buflen < sizeof kd) { 1936 error = ENOMEM; 1937 break; 1938 } 1939 memset(&kd, 0, sizeof(kd)); 1940 kd.d_bmajor = devsw_conv[i].d_bmajor; 1941 kd.d_cmajor = devsw_conv[i].d_cmajor; 1942 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1943 mutex_exit(&device_lock); 1944 error = dcopyout(l, &kd, where, sizeof kd); 1945 mutex_enter(&device_lock); 1946 if (error != 0) 1947 break; 1948 buflen -= sizeof kd; 1949 where += sizeof kd; 1950 } 1951 mutex_exit(&device_lock); 1952 sysctl_relock(); 1953 *oldlenp = where - start; 1954 return error; 1955 } 1956 1957 /* 1958 * sysctl helper function for kern.file2 1959 */ 1960 static int 1961 sysctl_kern_file2(SYSCTLFN_ARGS) 1962 { 1963 struct proc *p; 1964 struct file *fp, *tp, *np; 1965 struct filedesc *fd; 1966 struct kinfo_file kf; 1967 char *dp; 1968 u_int i, op; 1969 size_t len, needed, elem_size, out_size; 1970 int error, arg, elem_count; 1971 fdfile_t *ff; 1972 1973 if (namelen == 1 && name[0] == CTL_QUERY) 1974 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1975 1976 if (namelen != 4) 1977 return (EINVAL); 1978 1979 error = 0; 1980 dp = oldp; 1981 len = (oldp != NULL) ? *oldlenp : 0; 1982 op = name[0]; 1983 arg = name[1]; 1984 elem_size = name[2]; 1985 elem_count = name[3]; 1986 out_size = MIN(sizeof(kf), elem_size); 1987 needed = 0; 1988 1989 if (elem_size < 1 || elem_count < 0) 1990 return (EINVAL); 1991 1992 switch (op) { 1993 case KERN_FILE_BYFILE: 1994 /* 1995 * doesn't use arg so it must be zero 1996 */ 1997 if (arg != 0) 1998 return (EINVAL); 1999 sysctl_unlock(); 2000 /* 2001 * allocate dummy file descriptor to make position in list 2002 */ 2003 if ((tp = fgetdummy()) == NULL) { 2004 sysctl_relock(); 2005 return ENOMEM; 2006 } 2007 mutex_enter(&filelist_lock); 2008 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 2009 np = LIST_NEXT(fp, f_list); 2010 mutex_enter(&fp->f_lock); 2011 if (fp->f_count == 0) { 2012 mutex_exit(&fp->f_lock); 2013 continue; 2014 } 2015 /* 2016 * XXX Need to prevent that from being an alternative 2017 * XXX way for getting process information. 2018 */ 2019 if (kauth_authorize_generic(l->l_cred, 2020 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 2021 mutex_exit(&fp->f_lock); 2022 continue; 2023 } 2024 if (len >= elem_size && elem_count > 0) { 2025 fill_file(&kf, fp, NULL, 0, 0); 2026 LIST_INSERT_AFTER(fp, tp, f_list); 2027 mutex_exit(&fp->f_lock); 2028 mutex_exit(&filelist_lock); 2029 error = dcopyout(l, &kf, dp, out_size); 2030 mutex_enter(&filelist_lock); 2031 np = LIST_NEXT(tp, f_list); 2032 LIST_REMOVE(tp, f_list); 2033 if (error) { 2034 break; 2035 } 2036 dp += elem_size; 2037 len -= elem_size; 2038 } else { 2039 mutex_exit(&fp->f_lock); 2040 } 2041 if (elem_count > 0) { 2042 needed += elem_size; 2043 if (elem_count != INT_MAX) 2044 elem_count--; 2045 } 2046 } 2047 mutex_exit(&filelist_lock); 2048 fputdummy(tp); 2049 sysctl_relock(); 2050 break; 2051 case KERN_FILE_BYPID: 2052 if (arg < -1) 2053 /* -1 means all processes */ 2054 return (EINVAL); 2055 sysctl_unlock(); 2056 mutex_enter(proc_lock); 2057 LIST_FOREACH(p, &allproc, p_list) { 2058 if (p->p_stat == SIDL) { 2059 /* skip embryonic processes */ 2060 continue; 2061 } 2062 if (arg > 0 && p->p_pid != arg) { 2063 /* pick only the one we want */ 2064 /* XXX want 0 to mean "kernel files" */ 2065 continue; 2066 } 2067 mutex_enter(p->p_lock); 2068 error = kauth_authorize_process(l->l_cred, 2069 KAUTH_PROCESS_CANSEE, p, 2070 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_OPENFILES), 2071 NULL, NULL); 2072 mutex_exit(p->p_lock); 2073 if (error != 0) { 2074 /* 2075 * Don't leak kauth retval if we're silently 2076 * skipping this entry. 2077 */ 2078 error = 0; 2079 continue; 2080 } 2081 2082 /* 2083 * Grab a hold on the process. 2084 */ 2085 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 2086 continue; 2087 } 2088 mutex_exit(proc_lock); 2089 2090 /* XXX Do we need to check permission per file? */ 2091 fd = p->p_fd; 2092 mutex_enter(&fd->fd_lock); 2093 for (i = 0; i < fd->fd_nfiles; i++) { 2094 if ((ff = fd->fd_ofiles[i]) == NULL) { 2095 continue; 2096 } 2097 mutex_enter(&ff->ff_lock); 2098 if ((fp = ff->ff_file) == NULL) { 2099 mutex_exit(&ff->ff_lock); 2100 continue; 2101 } 2102 if (len >= elem_size && elem_count > 0) { 2103 mutex_enter(&fp->f_lock); 2104 fill_file(&kf, fp, ff, i, p->p_pid); 2105 mutex_exit(&fp->f_lock); 2106 mutex_exit(&ff->ff_lock); 2107 mutex_exit(&fd->fd_lock); 2108 error = dcopyout(l, &kf, dp, out_size); 2109 mutex_enter(&fd->fd_lock); 2110 if (error) 2111 break; 2112 dp += elem_size; 2113 len -= elem_size; 2114 } else { 2115 mutex_exit(&ff->ff_lock); 2116 } 2117 if (elem_count > 0) { 2118 needed += elem_size; 2119 if (elem_count != INT_MAX) 2120 elem_count--; 2121 } 2122 } 2123 mutex_exit(&fd->fd_lock); 2124 2125 /* 2126 * Release reference to process. 2127 */ 2128 mutex_enter(proc_lock); 2129 rw_exit(&p->p_reflock); 2130 } 2131 mutex_exit(proc_lock); 2132 sysctl_relock(); 2133 break; 2134 default: 2135 return (EINVAL); 2136 } 2137 2138 if (oldp == NULL) 2139 needed += KERN_FILESLOP * elem_size; 2140 *oldlenp = needed; 2141 2142 return (error); 2143 } 2144 2145 static void 2146 fill_file(struct kinfo_file *kp, const file_t *fp, const fdfile_t *ff, 2147 int i, pid_t pid) 2148 { 2149 2150 memset(kp, 0, sizeof(*kp)); 2151 2152 kp->ki_fileaddr = PTRTOUINT64(fp); 2153 kp->ki_flag = fp->f_flag; 2154 kp->ki_iflags = fp->f_iflags; 2155 kp->ki_ftype = fp->f_type; 2156 kp->ki_count = fp->f_count; 2157 kp->ki_msgcount = fp->f_msgcount; 2158 kp->ki_fucred = PTRTOUINT64(fp->f_cred); 2159 kp->ki_fuid = kauth_cred_geteuid(fp->f_cred); 2160 kp->ki_fgid = kauth_cred_getegid(fp->f_cred); 2161 kp->ki_fops = PTRTOUINT64(fp->f_ops); 2162 kp->ki_foffset = fp->f_offset; 2163 kp->ki_fdata = PTRTOUINT64(fp->f_data); 2164 2165 /* vnode information to glue this file to something */ 2166 if (fp->f_type == DTYPE_VNODE) { 2167 struct vnode *vp = (struct vnode *)fp->f_data; 2168 2169 kp->ki_vun = PTRTOUINT64(vp->v_un.vu_socket); 2170 kp->ki_vsize = vp->v_size; 2171 kp->ki_vtype = vp->v_type; 2172 kp->ki_vtag = vp->v_tag; 2173 kp->ki_vdata = PTRTOUINT64(vp->v_data); 2174 } 2175 2176 /* process information when retrieved via KERN_FILE_BYPID */ 2177 if (ff != NULL) { 2178 kp->ki_pid = pid; 2179 kp->ki_fd = i; 2180 kp->ki_ofileflags = ff->ff_exclose; 2181 kp->ki_usecount = ff->ff_refcnt; 2182 } 2183 } 2184 2185 static int 2186 sysctl_doeproc(SYSCTLFN_ARGS) 2187 { 2188 struct eproc *eproc; 2189 struct kinfo_proc2 *kproc2; 2190 struct kinfo_proc *dp; 2191 struct proc *p, *next, *marker; 2192 char *where, *dp2; 2193 int type, op, arg, error; 2194 u_int elem_size, elem_count; 2195 size_t buflen, needed; 2196 bool match, zombie, mmmbrains; 2197 2198 if (namelen == 1 && name[0] == CTL_QUERY) 2199 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2200 2201 dp = oldp; 2202 dp2 = where = oldp; 2203 buflen = where != NULL ? *oldlenp : 0; 2204 error = 0; 2205 needed = 0; 2206 type = rnode->sysctl_num; 2207 2208 if (type == KERN_PROC) { 2209 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 2210 return (EINVAL); 2211 op = name[0]; 2212 if (op != KERN_PROC_ALL) 2213 arg = name[1]; 2214 else 2215 arg = 0; /* Quell compiler warning */ 2216 elem_size = elem_count = 0; /* Ditto */ 2217 } else { 2218 if (namelen != 4) 2219 return (EINVAL); 2220 op = name[0]; 2221 arg = name[1]; 2222 elem_size = name[2]; 2223 elem_count = name[3]; 2224 } 2225 2226 sysctl_unlock(); 2227 2228 if (type == KERN_PROC) { 2229 eproc = kmem_alloc(sizeof(*eproc), KM_SLEEP); 2230 kproc2 = NULL; 2231 } else { 2232 eproc = NULL; 2233 kproc2 = kmem_alloc(sizeof(*kproc2), KM_SLEEP); 2234 } 2235 marker = kmem_alloc(sizeof(*marker), KM_SLEEP); 2236 2237 mutex_enter(proc_lock); 2238 mmmbrains = false; 2239 for (p = LIST_FIRST(&allproc);; p = next) { 2240 if (p == NULL) { 2241 if (!mmmbrains) { 2242 p = LIST_FIRST(&zombproc); 2243 mmmbrains = true; 2244 } 2245 if (p == NULL) 2246 break; 2247 } 2248 next = LIST_NEXT(p, p_list); 2249 2250 /* 2251 * Skip embryonic processes. 2252 */ 2253 if (p->p_stat == SIDL) 2254 continue; 2255 2256 mutex_enter(p->p_lock); 2257 error = kauth_authorize_process(l->l_cred, 2258 KAUTH_PROCESS_CANSEE, p, 2259 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENTRY), NULL, NULL); 2260 if (error != 0) { 2261 mutex_exit(p->p_lock); 2262 continue; 2263 } 2264 2265 /* 2266 * TODO - make more efficient (see notes below). 2267 * do by session. 2268 */ 2269 switch (op) { 2270 case KERN_PROC_PID: 2271 /* could do this with just a lookup */ 2272 match = (p->p_pid == (pid_t)arg); 2273 break; 2274 2275 case KERN_PROC_PGRP: 2276 /* could do this by traversing pgrp */ 2277 match = (p->p_pgrp->pg_id == (pid_t)arg); 2278 break; 2279 2280 case KERN_PROC_SESSION: 2281 match = (p->p_session->s_sid == (pid_t)arg); 2282 break; 2283 2284 case KERN_PROC_TTY: 2285 match = true; 2286 if (arg == (int) KERN_PROC_TTY_REVOKE) { 2287 if ((p->p_lflag & PL_CONTROLT) == 0 || 2288 p->p_session->s_ttyp == NULL || 2289 p->p_session->s_ttyvp != NULL) { 2290 match = false; 2291 } 2292 } else if ((p->p_lflag & PL_CONTROLT) == 0 || 2293 p->p_session->s_ttyp == NULL) { 2294 if ((dev_t)arg != KERN_PROC_TTY_NODEV) { 2295 match = false; 2296 } 2297 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) { 2298 match = false; 2299 } 2300 break; 2301 2302 case KERN_PROC_UID: 2303 match = (kauth_cred_geteuid(p->p_cred) == (uid_t)arg); 2304 break; 2305 2306 case KERN_PROC_RUID: 2307 match = (kauth_cred_getuid(p->p_cred) == (uid_t)arg); 2308 break; 2309 2310 case KERN_PROC_GID: 2311 match = (kauth_cred_getegid(p->p_cred) == (uid_t)arg); 2312 break; 2313 2314 case KERN_PROC_RGID: 2315 match = (kauth_cred_getgid(p->p_cred) == (uid_t)arg); 2316 break; 2317 2318 case KERN_PROC_ALL: 2319 match = true; 2320 /* allow everything */ 2321 break; 2322 2323 default: 2324 error = EINVAL; 2325 mutex_exit(p->p_lock); 2326 goto cleanup; 2327 } 2328 if (!match) { 2329 mutex_exit(p->p_lock); 2330 continue; 2331 } 2332 2333 /* 2334 * Grab a hold on the process. 2335 */ 2336 if (mmmbrains) { 2337 zombie = true; 2338 } else { 2339 zombie = !rw_tryenter(&p->p_reflock, RW_READER); 2340 } 2341 if (zombie) { 2342 LIST_INSERT_AFTER(p, marker, p_list); 2343 } 2344 2345 if (type == KERN_PROC) { 2346 if (buflen >= sizeof(struct kinfo_proc)) { 2347 fill_eproc(p, eproc, zombie); 2348 mutex_exit(p->p_lock); 2349 mutex_exit(proc_lock); 2350 error = dcopyout(l, p, &dp->kp_proc, 2351 sizeof(struct proc)); 2352 mutex_enter(proc_lock); 2353 if (error) { 2354 goto bah; 2355 } 2356 error = dcopyout(l, eproc, &dp->kp_eproc, 2357 sizeof(*eproc)); 2358 if (error) { 2359 goto bah; 2360 } 2361 dp++; 2362 buflen -= sizeof(struct kinfo_proc); 2363 } else { 2364 mutex_exit(p->p_lock); 2365 } 2366 needed += sizeof(struct kinfo_proc); 2367 } else { /* KERN_PROC2 */ 2368 if (buflen >= elem_size && elem_count > 0) { 2369 fill_kproc2(p, kproc2, zombie); 2370 mutex_exit(p->p_lock); 2371 mutex_exit(proc_lock); 2372 /* 2373 * Copy out elem_size, but not larger than 2374 * the size of a struct kinfo_proc2. 2375 */ 2376 error = dcopyout(l, kproc2, dp2, 2377 min(sizeof(*kproc2), elem_size)); 2378 mutex_enter(proc_lock); 2379 if (error) { 2380 goto bah; 2381 } 2382 dp2 += elem_size; 2383 buflen -= elem_size; 2384 elem_count--; 2385 } else { 2386 mutex_exit(p->p_lock); 2387 } 2388 needed += elem_size; 2389 } 2390 2391 /* 2392 * Release reference to process. 2393 */ 2394 if (zombie) { 2395 next = LIST_NEXT(marker, p_list); 2396 LIST_REMOVE(marker, p_list); 2397 } else { 2398 rw_exit(&p->p_reflock); 2399 } 2400 } 2401 mutex_exit(proc_lock); 2402 2403 if (where != NULL) { 2404 if (type == KERN_PROC) 2405 *oldlenp = (char *)dp - where; 2406 else 2407 *oldlenp = dp2 - where; 2408 if (needed > *oldlenp) { 2409 error = ENOMEM; 2410 goto out; 2411 } 2412 } else { 2413 needed += KERN_PROCSLOP; 2414 *oldlenp = needed; 2415 } 2416 if (kproc2) 2417 kmem_free(kproc2, sizeof(*kproc2)); 2418 if (eproc) 2419 kmem_free(eproc, sizeof(*eproc)); 2420 if (marker) 2421 kmem_free(marker, sizeof(*marker)); 2422 sysctl_relock(); 2423 return 0; 2424 bah: 2425 if (zombie) 2426 LIST_REMOVE(marker, p_list); 2427 else 2428 rw_exit(&p->p_reflock); 2429 cleanup: 2430 mutex_exit(proc_lock); 2431 out: 2432 if (kproc2) 2433 kmem_free(kproc2, sizeof(*kproc2)); 2434 if (eproc) 2435 kmem_free(eproc, sizeof(*eproc)); 2436 if (marker) 2437 kmem_free(marker, sizeof(*marker)); 2438 sysctl_relock(); 2439 return error; 2440 } 2441 2442 /* 2443 * sysctl helper routine for kern.proc_args pseudo-subtree. 2444 */ 2445 static int 2446 sysctl_kern_proc_args(SYSCTLFN_ARGS) 2447 { 2448 struct ps_strings pss; 2449 struct proc *p; 2450 size_t len, i; 2451 struct uio auio; 2452 struct iovec aiov; 2453 pid_t pid; 2454 int nargv, type, error, argvlen; 2455 char *arg; 2456 char **argv = NULL; 2457 char *tmp; 2458 struct vmspace *vmspace; 2459 vaddr_t psstr_addr; 2460 vaddr_t offsetn; 2461 vaddr_t offsetv; 2462 2463 if (namelen == 1 && name[0] == CTL_QUERY) 2464 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2465 2466 if (newp != NULL || namelen != 2) 2467 return (EINVAL); 2468 pid = name[0]; 2469 type = name[1]; 2470 argv = NULL; 2471 argvlen = 0; 2472 2473 switch (type) { 2474 case KERN_PROC_ARGV: 2475 case KERN_PROC_NARGV: 2476 case KERN_PROC_ENV: 2477 case KERN_PROC_NENV: 2478 /* ok */ 2479 break; 2480 default: 2481 return (EINVAL); 2482 } 2483 2484 sysctl_unlock(); 2485 2486 /* check pid */ 2487 mutex_enter(proc_lock); 2488 if ((p = p_find(pid, PFIND_LOCKED)) == NULL) { 2489 error = EINVAL; 2490 goto out_locked; 2491 } 2492 mutex_enter(p->p_lock); 2493 2494 /* Check permission. */ 2495 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 2496 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2497 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ARGS), NULL, NULL); 2498 else if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) 2499 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2500 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENV), NULL, NULL); 2501 else 2502 error = EINVAL; /* XXXGCC */ 2503 if (error) { 2504 mutex_exit(p->p_lock); 2505 goto out_locked; 2506 } 2507 2508 if (oldp == NULL) { 2509 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 2510 *oldlenp = sizeof (int); 2511 else 2512 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 2513 error = 0; 2514 mutex_exit(p->p_lock); 2515 goto out_locked; 2516 } 2517 2518 /* 2519 * Zombies don't have a stack, so we can't read their psstrings. 2520 * System processes also don't have a user stack. 2521 */ 2522 if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) { 2523 error = EINVAL; 2524 mutex_exit(p->p_lock); 2525 goto out_locked; 2526 } 2527 2528 /* 2529 * Lock the process down in memory. 2530 */ 2531 psstr_addr = (vaddr_t)p->p_psstr; 2532 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) { 2533 offsetn = p->p_psnargv; 2534 offsetv = p->p_psargv; 2535 } else { 2536 offsetn = p->p_psnenv; 2537 offsetv = p->p_psenv; 2538 } 2539 vmspace = p->p_vmspace; 2540 uvmspace_addref(vmspace); 2541 mutex_exit(p->p_lock); 2542 mutex_exit(proc_lock); 2543 2544 /* 2545 * Allocate a temporary buffer to hold the arguments. 2546 */ 2547 arg = kmem_alloc(PAGE_SIZE, KM_SLEEP); 2548 2549 /* 2550 * Read in the ps_strings structure. 2551 */ 2552 aiov.iov_base = &pss; 2553 aiov.iov_len = sizeof(pss); 2554 auio.uio_iov = &aiov; 2555 auio.uio_iovcnt = 1; 2556 auio.uio_offset = psstr_addr; 2557 auio.uio_resid = sizeof(pss); 2558 auio.uio_rw = UIO_READ; 2559 UIO_SETUP_SYSSPACE(&auio); 2560 error = uvm_io(&vmspace->vm_map, &auio); 2561 if (error) 2562 goto done; 2563 2564 memcpy(&nargv, (char *)&pss + offsetn, sizeof(nargv)); 2565 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 2566 error = dcopyout(l, &nargv, oldp, sizeof(nargv)); 2567 *oldlenp = sizeof(nargv); 2568 goto done; 2569 } 2570 /* 2571 * Now read the address of the argument vector. 2572 */ 2573 switch (type) { 2574 case KERN_PROC_ARGV: 2575 /* FALLTHROUGH */ 2576 case KERN_PROC_ENV: 2577 memcpy(&tmp, (char *)&pss + offsetv, sizeof(tmp)); 2578 break; 2579 default: 2580 error = EINVAL; 2581 goto done; 2582 } 2583 2584 #ifdef COMPAT_NETBSD32 2585 if (p->p_flag & PK_32) 2586 len = sizeof(netbsd32_charp) * nargv; 2587 else 2588 #endif 2589 len = sizeof(char *) * nargv; 2590 2591 if ((argvlen = len) != 0) 2592 argv = kmem_alloc(len, KM_SLEEP); 2593 2594 aiov.iov_base = argv; 2595 aiov.iov_len = len; 2596 auio.uio_iov = &aiov; 2597 auio.uio_iovcnt = 1; 2598 auio.uio_offset = (off_t)(unsigned long)tmp; 2599 auio.uio_resid = len; 2600 auio.uio_rw = UIO_READ; 2601 UIO_SETUP_SYSSPACE(&auio); 2602 error = uvm_io(&vmspace->vm_map, &auio); 2603 if (error) 2604 goto done; 2605 2606 /* 2607 * Now copy each string. 2608 */ 2609 len = 0; /* bytes written to user buffer */ 2610 for (i = 0; i < nargv; i++) { 2611 int finished = 0; 2612 vaddr_t base; 2613 size_t xlen; 2614 int j; 2615 2616 #ifdef COMPAT_NETBSD32 2617 if (p->p_flag & PK_32) { 2618 netbsd32_charp *argv32; 2619 2620 argv32 = (netbsd32_charp *)argv; 2621 base = (vaddr_t)NETBSD32PTR64(argv32[i]); 2622 } else 2623 #endif 2624 base = (vaddr_t)argv[i]; 2625 2626 /* 2627 * The program has messed around with its arguments, 2628 * possibly deleting some, and replacing them with 2629 * NULL's. Treat this as the last argument and not 2630 * a failure. 2631 */ 2632 if (base == 0) 2633 break; 2634 2635 while (!finished) { 2636 xlen = PAGE_SIZE - (base & PAGE_MASK); 2637 2638 aiov.iov_base = arg; 2639 aiov.iov_len = PAGE_SIZE; 2640 auio.uio_iov = &aiov; 2641 auio.uio_iovcnt = 1; 2642 auio.uio_offset = base; 2643 auio.uio_resid = xlen; 2644 auio.uio_rw = UIO_READ; 2645 UIO_SETUP_SYSSPACE(&auio); 2646 error = uvm_io(&vmspace->vm_map, &auio); 2647 if (error) 2648 goto done; 2649 2650 /* Look for the end of the string */ 2651 for (j = 0; j < xlen; j++) { 2652 if (arg[j] == '\0') { 2653 xlen = j + 1; 2654 finished = 1; 2655 break; 2656 } 2657 } 2658 2659 /* Check for user buffer overflow */ 2660 if (len + xlen > *oldlenp) { 2661 finished = 1; 2662 if (len > *oldlenp) 2663 xlen = 0; 2664 else 2665 xlen = *oldlenp - len; 2666 } 2667 2668 /* Copyout the page */ 2669 error = dcopyout(l, arg, (char *)oldp + len, xlen); 2670 if (error) 2671 goto done; 2672 2673 len += xlen; 2674 base += xlen; 2675 } 2676 } 2677 *oldlenp = len; 2678 2679 done: 2680 if (argvlen != 0) 2681 kmem_free(argv, argvlen); 2682 uvmspace_free(vmspace); 2683 kmem_free(arg, PAGE_SIZE); 2684 sysctl_relock(); 2685 return error; 2686 2687 out_locked: 2688 mutex_exit(proc_lock); 2689 sysctl_relock(); 2690 return error; 2691 } 2692 2693 static int 2694 sysctl_security_setidcore(SYSCTLFN_ARGS) 2695 { 2696 int newsize, error; 2697 struct sysctlnode node; 2698 2699 node = *rnode; 2700 node.sysctl_data = &newsize; 2701 newsize = *(int *)rnode->sysctl_data; 2702 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2703 if (error || newp == NULL) 2704 return error; 2705 2706 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2707 0, NULL, NULL, NULL)) 2708 return (EPERM); 2709 2710 *(int *)rnode->sysctl_data = newsize; 2711 2712 return 0; 2713 } 2714 2715 static int 2716 sysctl_security_setidcorename(SYSCTLFN_ARGS) 2717 { 2718 int error; 2719 char *newsetidcorename; 2720 struct sysctlnode node; 2721 2722 newsetidcorename = PNBUF_GET(); 2723 node = *rnode; 2724 node.sysctl_data = newsetidcorename; 2725 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 2726 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2727 if (error || newp == NULL) { 2728 goto out; 2729 } 2730 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2731 0, NULL, NULL, NULL)) { 2732 error = EPERM; 2733 goto out; 2734 } 2735 if (strlen(newsetidcorename) == 0) { 2736 error = EINVAL; 2737 goto out; 2738 } 2739 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 2740 out: 2741 PNBUF_PUT(newsetidcorename); 2742 return error; 2743 } 2744 2745 /* 2746 * sysctl helper routine for kern.cp_id node. Maps cpus to their 2747 * cpuids. 2748 */ 2749 static int 2750 sysctl_kern_cpid(SYSCTLFN_ARGS) 2751 { 2752 struct sysctlnode node = *rnode; 2753 uint64_t *cp_id = NULL; 2754 int error, n = ncpu; 2755 struct cpu_info *ci; 2756 CPU_INFO_ITERATOR cii; 2757 2758 /* 2759 * Here you may either retrieve a single cpu id or the whole 2760 * set. The size you get back when probing depends on what 2761 * you ask for. 2762 */ 2763 switch (namelen) { 2764 case 0: 2765 node.sysctl_size = n * sizeof(uint64_t); 2766 n = -2; /* ALL */ 2767 break; 2768 case 1: 2769 if (name[0] < 0 || name[0] >= n) 2770 return (ENOENT); /* ENOSUCHPROCESSOR */ 2771 node.sysctl_size = sizeof(uint64_t); 2772 n = name[0]; 2773 /* 2774 * adjust these so that sysctl_lookup() will be happy 2775 */ 2776 name++; 2777 namelen--; 2778 break; 2779 default: 2780 return (EINVAL); 2781 } 2782 2783 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 2784 if (cp_id == NULL) 2785 return (ENOMEM); 2786 node.sysctl_data = cp_id; 2787 memset(cp_id, 0, node.sysctl_size); 2788 2789 for (CPU_INFO_FOREACH(cii, ci)) { 2790 if (n <= 0) 2791 cp_id[0] = cpu_index(ci); 2792 /* 2793 * if a specific processor was requested and we just 2794 * did it, we're done here 2795 */ 2796 if (n == 0) 2797 break; 2798 /* 2799 * if doing "all", skip to next cp_id slot for next processor 2800 */ 2801 if (n == -2) 2802 cp_id++; 2803 /* 2804 * if we're doing a specific processor, we're one 2805 * processor closer 2806 */ 2807 if (n > 0) 2808 n--; 2809 } 2810 2811 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2812 kmem_free(node.sysctl_data, node.sysctl_size); 2813 return (error); 2814 } 2815 2816 /* 2817 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 2818 * calculate on the fly taking into account integer overflow and the 2819 * current wired count. 2820 */ 2821 static int 2822 sysctl_hw_usermem(SYSCTLFN_ARGS) 2823 { 2824 u_int ui; 2825 u_quad_t uq; 2826 struct sysctlnode node; 2827 2828 node = *rnode; 2829 switch (rnode->sysctl_num) { 2830 case HW_USERMEM: 2831 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 2832 ui = UINT_MAX; 2833 else 2834 ui *= PAGE_SIZE; 2835 node.sysctl_data = &ui; 2836 break; 2837 case HW_USERMEM64: 2838 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2839 node.sysctl_data = &uq; 2840 break; 2841 default: 2842 return (EINVAL); 2843 } 2844 2845 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2846 } 2847 2848 /* 2849 * sysctl helper routine for kern.cnmagic node. Pulls the old value 2850 * out, encoded, and stuffs the new value in for decoding. 2851 */ 2852 static int 2853 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2854 { 2855 char magic[CNS_LEN]; 2856 int error; 2857 struct sysctlnode node; 2858 2859 if (oldp) 2860 cn_get_magic(magic, CNS_LEN); 2861 node = *rnode; 2862 node.sysctl_data = &magic[0]; 2863 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2864 if (error || newp == NULL) 2865 return (error); 2866 2867 return (cn_set_magic(magic)); 2868 } 2869 2870 /* 2871 * ******************************************************************** 2872 * section 3: public helper routines that are used for more than one 2873 * node 2874 * ******************************************************************** 2875 */ 2876 2877 /* 2878 * sysctl helper routine for the kern.root_device node and some ports' 2879 * machdep.root_device nodes. 2880 */ 2881 int 2882 sysctl_root_device(SYSCTLFN_ARGS) 2883 { 2884 struct sysctlnode node; 2885 2886 node = *rnode; 2887 node.sysctl_data = root_device->dv_xname; 2888 node.sysctl_size = strlen(device_xname(root_device)) + 1; 2889 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2890 } 2891 2892 /* 2893 * sysctl helper routine for kern.consdev, dependent on the current 2894 * state of the console. Also used for machdep.console_device on some 2895 * ports. 2896 */ 2897 int 2898 sysctl_consdev(SYSCTLFN_ARGS) 2899 { 2900 dev_t consdev; 2901 struct sysctlnode node; 2902 2903 if (cn_tab != NULL) 2904 consdev = cn_tab->cn_dev; 2905 else 2906 consdev = NODEV; 2907 node = *rnode; 2908 node.sysctl_data = &consdev; 2909 node.sysctl_size = sizeof(consdev); 2910 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2911 } 2912 2913 /* 2914 * ******************************************************************** 2915 * section 4: support for some helpers 2916 * ******************************************************************** 2917 */ 2918 /* 2919 * Find the most ``active'' lwp of a process and return it for ps display 2920 * purposes 2921 */ 2922 static struct lwp * 2923 proc_active_lwp(struct proc *p) 2924 { 2925 static const int ostat[] = { 2926 0, 2927 2, /* LSIDL */ 2928 6, /* LSRUN */ 2929 5, /* LSSLEEP */ 2930 4, /* LSSTOP */ 2931 0, /* LSZOMB */ 2932 1, /* LSDEAD */ 2933 7, /* LSONPROC */ 2934 3 /* LSSUSPENDED */ 2935 }; 2936 2937 struct lwp *l, *lp = NULL; 2938 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 2939 KASSERT(l->l_stat >= 0 && l->l_stat < __arraycount(ostat)); 2940 if (lp == NULL || 2941 ostat[l->l_stat] > ostat[lp->l_stat] || 2942 (ostat[l->l_stat] == ostat[lp->l_stat] && 2943 l->l_cpticks > lp->l_cpticks)) { 2944 lp = l; 2945 continue; 2946 } 2947 } 2948 return lp; 2949 } 2950 2951 2952 /* 2953 * Fill in a kinfo_proc2 structure for the specified process. 2954 */ 2955 static void 2956 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki, bool zombie) 2957 { 2958 struct tty *tp; 2959 struct lwp *l, *l2; 2960 struct timeval ut, st, rt; 2961 sigset_t ss1, ss2; 2962 struct rusage ru; 2963 struct vmspace *vm; 2964 2965 KASSERT(mutex_owned(proc_lock)); 2966 KASSERT(mutex_owned(p->p_lock)); 2967 2968 sigemptyset(&ss1); 2969 sigemptyset(&ss2); 2970 memset(ki, 0, sizeof(*ki)); 2971 2972 ki->p_paddr = PTRTOUINT64(p); 2973 ki->p_fd = PTRTOUINT64(p->p_fd); 2974 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2975 ki->p_stats = PTRTOUINT64(p->p_stats); 2976 ki->p_limit = PTRTOUINT64(p->p_limit); 2977 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2978 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2979 ki->p_sess = PTRTOUINT64(p->p_session); 2980 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2981 ki->p_ru = PTRTOUINT64(&p->p_stats->p_ru); 2982 ki->p_eflag = 0; 2983 ki->p_exitsig = p->p_exitsig; 2984 ki->p_flag = sysctl_map_flags(sysctl_flagmap, p->p_flag); 2985 ki->p_flag |= sysctl_map_flags(sysctl_sflagmap, p->p_sflag); 2986 ki->p_flag |= sysctl_map_flags(sysctl_slflagmap, p->p_slflag); 2987 ki->p_flag |= sysctl_map_flags(sysctl_lflagmap, p->p_lflag); 2988 ki->p_flag |= sysctl_map_flags(sysctl_stflagmap, p->p_stflag); 2989 ki->p_pid = p->p_pid; 2990 if (p->p_pptr) 2991 ki->p_ppid = p->p_pptr->p_pid; 2992 else 2993 ki->p_ppid = 0; 2994 ki->p_uid = kauth_cred_geteuid(p->p_cred); 2995 ki->p_ruid = kauth_cred_getuid(p->p_cred); 2996 ki->p_gid = kauth_cred_getegid(p->p_cred); 2997 ki->p_rgid = kauth_cred_getgid(p->p_cred); 2998 ki->p_svuid = kauth_cred_getsvuid(p->p_cred); 2999 ki->p_svgid = kauth_cred_getsvgid(p->p_cred); 3000 ki->p_ngroups = kauth_cred_ngroups(p->p_cred); 3001 kauth_cred_getgroups(p->p_cred, ki->p_groups, 3002 min(ki->p_ngroups, sizeof(ki->p_groups) / sizeof(ki->p_groups[0])), 3003 UIO_SYSSPACE); 3004 3005 ki->p_uticks = p->p_uticks; 3006 ki->p_sticks = p->p_sticks; 3007 ki->p_iticks = p->p_iticks; 3008 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 3009 ki->p_tracep = PTRTOUINT64(p->p_tracep); 3010 ki->p_traceflag = p->p_traceflag; 3011 3012 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 3013 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 3014 3015 ki->p_cpticks = 0; 3016 ki->p_pctcpu = p->p_pctcpu; 3017 ki->p_estcpu = 0; 3018 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 3019 ki->p_realstat = p->p_stat; 3020 ki->p_nice = p->p_nice; 3021 ki->p_xstat = p->p_xstat; 3022 ki->p_acflag = p->p_acflag; 3023 3024 strncpy(ki->p_comm, p->p_comm, 3025 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 3026 strncpy(ki->p_ename, p->p_emul->e_name, sizeof(ki->p_ename)); 3027 3028 ki->p_nlwps = p->p_nlwps; 3029 ki->p_realflag = ki->p_flag; 3030 3031 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3032 vm = p->p_vmspace; 3033 ki->p_vm_rssize = vm_resident_count(vm); 3034 ki->p_vm_tsize = vm->vm_tsize; 3035 ki->p_vm_dsize = vm->vm_dsize; 3036 ki->p_vm_ssize = vm->vm_ssize; 3037 3038 /* Pick the primary (first) LWP */ 3039 l = proc_active_lwp(p); 3040 KASSERT(l != NULL); 3041 lwp_lock(l); 3042 ki->p_nrlwps = p->p_nrlwps; 3043 ki->p_forw = 0; 3044 ki->p_back = 0; 3045 ki->p_addr = PTRTOUINT64(l->l_addr); 3046 ki->p_stat = l->l_stat; 3047 ki->p_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3048 ki->p_swtime = l->l_swtime; 3049 ki->p_slptime = l->l_slptime; 3050 if (l->l_stat == LSONPROC) 3051 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3052 else 3053 ki->p_schedflags = 0; 3054 ki->p_holdcnt = l->l_holdcnt; 3055 ki->p_priority = lwp_eprio(l); 3056 ki->p_usrpri = l->l_priority; 3057 if (l->l_wchan) 3058 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 3059 ki->p_wchan = PTRTOUINT64(l->l_wchan); 3060 ki->p_cpuid = cpu_index(l->l_cpu); 3061 lwp_unlock(l); 3062 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 3063 /* This is hardly correct, but... */ 3064 sigplusset(&l->l_sigpend.sp_set, &ss1); 3065 sigplusset(&l->l_sigmask, &ss2); 3066 ki->p_cpticks += l->l_cpticks; 3067 ki->p_pctcpu += l->l_pctcpu; 3068 ki->p_estcpu += l->l_estcpu; 3069 } 3070 } 3071 sigplusset(&p->p_sigpend.sp_set, &ss2); 3072 memcpy(&ki->p_siglist, &ss1, sizeof(ki_sigset_t)); 3073 memcpy(&ki->p_sigmask, &ss2, sizeof(ki_sigset_t)); 3074 3075 if (p->p_session != NULL) { 3076 ki->p_sid = p->p_session->s_sid; 3077 ki->p__pgid = p->p_pgrp->pg_id; 3078 if (p->p_session->s_ttyvp) 3079 ki->p_eflag |= EPROC_CTTY; 3080 if (SESS_LEADER(p)) 3081 ki->p_eflag |= EPROC_SLEADER; 3082 strncpy(ki->p_login, p->p_session->s_login, 3083 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 3084 ki->p_jobc = p->p_pgrp->pg_jobc; 3085 if ((p->p_lflag & PL_CONTROLT) && (tp = p->p_session->s_ttyp)) { 3086 ki->p_tdev = tp->t_dev; 3087 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3088 ki->p_tsess = PTRTOUINT64(tp->t_session); 3089 } else { 3090 ki->p_tdev = (int32_t)NODEV; 3091 } 3092 } 3093 3094 if (!P_ZOMBIE(p) && !zombie) { 3095 ki->p_uvalid = 1; 3096 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 3097 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 3098 3099 calcru(p, &ut, &st, NULL, &rt); 3100 ki->p_rtime_sec = rt.tv_sec; 3101 ki->p_rtime_usec = rt.tv_usec; 3102 ki->p_uutime_sec = ut.tv_sec; 3103 ki->p_uutime_usec = ut.tv_usec; 3104 ki->p_ustime_sec = st.tv_sec; 3105 ki->p_ustime_usec = st.tv_usec; 3106 3107 memcpy(&ru, &p->p_stats->p_ru, sizeof(ru)); 3108 ki->p_uru_nvcsw = 0; 3109 ki->p_uru_nivcsw = 0; 3110 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 3111 ki->p_uru_nvcsw += (l2->l_ncsw - l2->l_nivcsw); 3112 ki->p_uru_nivcsw += l2->l_nivcsw; 3113 ruadd(&ru, &l2->l_ru); 3114 } 3115 ki->p_uru_maxrss = ru.ru_maxrss; 3116 ki->p_uru_ixrss = ru.ru_ixrss; 3117 ki->p_uru_idrss = ru.ru_idrss; 3118 ki->p_uru_isrss = ru.ru_isrss; 3119 ki->p_uru_minflt = ru.ru_minflt; 3120 ki->p_uru_majflt = ru.ru_majflt; 3121 ki->p_uru_nswap = ru.ru_nswap; 3122 ki->p_uru_inblock = ru.ru_inblock; 3123 ki->p_uru_oublock = ru.ru_oublock; 3124 ki->p_uru_msgsnd = ru.ru_msgsnd; 3125 ki->p_uru_msgrcv = ru.ru_msgrcv; 3126 ki->p_uru_nsignals = ru.ru_nsignals; 3127 3128 timeradd(&p->p_stats->p_cru.ru_utime, 3129 &p->p_stats->p_cru.ru_stime, &ut); 3130 ki->p_uctime_sec = ut.tv_sec; 3131 ki->p_uctime_usec = ut.tv_usec; 3132 } 3133 } 3134 3135 /* 3136 * Fill in a kinfo_lwp structure for the specified lwp. 3137 */ 3138 static void 3139 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 3140 { 3141 struct proc *p = l->l_proc; 3142 struct timeval tv; 3143 3144 KASSERT(lwp_locked(l, NULL)); 3145 3146 kl->l_forw = 0; 3147 kl->l_back = 0; 3148 kl->l_laddr = PTRTOUINT64(l); 3149 kl->l_addr = PTRTOUINT64(l->l_addr); 3150 kl->l_stat = l->l_stat; 3151 kl->l_lid = l->l_lid; 3152 kl->l_flag = sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 3153 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3154 3155 kl->l_swtime = l->l_swtime; 3156 kl->l_slptime = l->l_slptime; 3157 if (l->l_stat == LSONPROC) 3158 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3159 else 3160 kl->l_schedflags = 0; 3161 kl->l_holdcnt = l->l_holdcnt; 3162 kl->l_priority = lwp_eprio(l); 3163 kl->l_usrpri = l->l_priority; 3164 if (l->l_wchan) 3165 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 3166 kl->l_wchan = PTRTOUINT64(l->l_wchan); 3167 kl->l_cpuid = cpu_index(l->l_cpu); 3168 bintime2timeval(&l->l_rtime, &tv); 3169 kl->l_rtime_sec = tv.tv_sec; 3170 kl->l_rtime_usec = tv.tv_usec; 3171 kl->l_cpticks = l->l_cpticks; 3172 kl->l_pctcpu = l->l_pctcpu; 3173 kl->l_pid = p->p_pid; 3174 if (l->l_name == NULL) 3175 kl->l_name[0] = '\0'; 3176 else 3177 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 3178 } 3179 3180 /* 3181 * Fill in an eproc structure for the specified process. 3182 */ 3183 void 3184 fill_eproc(struct proc *p, struct eproc *ep, bool zombie) 3185 { 3186 struct tty *tp; 3187 struct lwp *l; 3188 3189 KASSERT(mutex_owned(proc_lock)); 3190 KASSERT(mutex_owned(p->p_lock)); 3191 3192 memset(ep, 0, sizeof(*ep)); 3193 3194 ep->e_paddr = p; 3195 ep->e_sess = p->p_session; 3196 if (p->p_cred) { 3197 kauth_cred_topcred(p->p_cred, &ep->e_pcred); 3198 kauth_cred_toucred(p->p_cred, &ep->e_ucred); 3199 } 3200 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3201 struct vmspace *vm = p->p_vmspace; 3202 3203 ep->e_vm.vm_rssize = vm_resident_count(vm); 3204 ep->e_vm.vm_tsize = vm->vm_tsize; 3205 ep->e_vm.vm_dsize = vm->vm_dsize; 3206 ep->e_vm.vm_ssize = vm->vm_ssize; 3207 3208 /* Pick the primary (first) LWP */ 3209 l = proc_active_lwp(p); 3210 KASSERT(l != NULL); 3211 lwp_lock(l); 3212 if (l->l_wchan) 3213 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 3214 lwp_unlock(l); 3215 } 3216 if (p->p_pptr) 3217 ep->e_ppid = p->p_pptr->p_pid; 3218 if (p->p_pgrp && p->p_session) { 3219 ep->e_pgid = p->p_pgrp->pg_id; 3220 ep->e_jobc = p->p_pgrp->pg_jobc; 3221 ep->e_sid = p->p_session->s_sid; 3222 if ((p->p_lflag & PL_CONTROLT) && 3223 (tp = ep->e_sess->s_ttyp)) { 3224 ep->e_tdev = tp->t_dev; 3225 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3226 ep->e_tsess = tp->t_session; 3227 } else 3228 ep->e_tdev = (uint32_t)NODEV; 3229 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 3230 if (SESS_LEADER(p)) 3231 ep->e_flag |= EPROC_SLEADER; 3232 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 3233 } 3234 ep->e_xsize = ep->e_xrssize = 0; 3235 ep->e_xccount = ep->e_xswrss = 0; 3236 } 3237 3238 u_int 3239 sysctl_map_flags(const u_int *map, u_int word) 3240 { 3241 u_int rv; 3242 3243 for (rv = 0; *map != 0; map += 2) 3244 if ((word & map[0]) != 0) 3245 rv |= map[1]; 3246 3247 return rv; 3248 } 3249
Indexes created Sun Sep 21 20:09:37 GMT 2025