init_sysctl.c revision 1.133.2.6
1 /* $NetBSD: init_sysctl.c,v 1.133.2.6 2009/09/16 13:38:00 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 2003, 2007, 2008, 2009 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 1.133.2.6 2009/09/16 13:38:00 yamt Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_compat_netbsd32.h" 37 #include "opt_compat_netbsd.h" 38 #include "opt_modular.h" 39 #include "opt_sa.h" 40 #include "opt_posix.h" 41 #include "pty.h" 42 #include "rnd.h" 43 44 #include <sys/types.h> 45 #include <sys/param.h> 46 #include <sys/sysctl.h> 47 #include <sys/cpu.h> 48 #include <sys/errno.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/unistd.h> 52 #include <sys/disklabel.h> 53 #include <sys/rnd.h> 54 #include <sys/vnode.h> 55 #include <sys/mount.h> 56 #include <sys/namei.h> 57 #include <sys/msgbuf.h> 58 #include <dev/cons.h> 59 #include <sys/socketvar.h> 60 #include <sys/file.h> 61 #include <sys/filedesc.h> 62 #include <sys/tty.h> 63 #include <sys/kmem.h> 64 #include <sys/resource.h> 65 #include <sys/resourcevar.h> 66 #include <sys/exec.h> 67 #include <sys/conf.h> 68 #include <sys/device.h> 69 #include <sys/stat.h> 70 #include <sys/kauth.h> 71 #include <sys/ktrace.h> 72 #include <sys/ksem.h> 73 74 #ifdef COMPAT_NETBSD32 75 #include <compat/netbsd32/netbsd32.h> 76 #endif 77 #ifdef COMPAT_50 78 #include <compat/sys/time.h> 79 #endif 80 81 #ifdef KERN_SA 82 #include <sys/sa.h> 83 #endif 84 85 #include <sys/cpu.h> 86 87 #if defined(MODULAR) || defined(P1003_1B_SEMAPHORE) 88 int posix_semaphores = 200112; 89 #else 90 int posix_semaphores; 91 #endif 92 93 int security_setidcore_dump; 94 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 95 uid_t security_setidcore_owner = 0; 96 gid_t security_setidcore_group = 0; 97 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 98 99 static const u_int sysctl_flagmap[] = { 100 PK_ADVLOCK, P_ADVLOCK, 101 PK_EXEC, P_EXEC, 102 PK_NOCLDWAIT, P_NOCLDWAIT, 103 PK_32, P_32, 104 PK_CLDSIGIGN, P_CLDSIGIGN, 105 PK_SUGID, P_SUGID, 106 0 107 }; 108 109 static const u_int sysctl_sflagmap[] = { 110 PS_NOCLDSTOP, P_NOCLDSTOP, 111 PS_WEXIT, P_WEXIT, 112 PS_STOPFORK, P_STOPFORK, 113 PS_STOPEXEC, P_STOPEXEC, 114 PS_STOPEXIT, P_STOPEXIT, 115 0 116 }; 117 118 static const u_int sysctl_slflagmap[] = { 119 PSL_TRACED, P_TRACED, 120 PSL_FSTRACE, P_FSTRACE, 121 PSL_CHTRACED, P_CHTRACED, 122 PSL_SYSCALL, P_SYSCALL, 123 0 124 }; 125 126 static const u_int sysctl_lflagmap[] = { 127 PL_CONTROLT, P_CONTROLT, 128 PL_PPWAIT, P_PPWAIT, 129 0 130 }; 131 132 static const u_int sysctl_stflagmap[] = { 133 PST_PROFIL, P_PROFIL, 134 0 135 136 }; 137 138 static const u_int sysctl_lwpflagmap[] = { 139 LW_INMEM, P_INMEM, 140 LW_SINTR, P_SINTR, 141 LW_SYSTEM, P_SYSTEM, 142 LW_SA, P_SA, /* WRS ??? */ 143 0 144 }; 145 146 static const u_int sysctl_lwpprflagmap[] = { 147 LPR_DETACHED, L_DETACHED, 148 0 149 }; 150 151 /* 152 * try over estimating by 5 procs/lwps 153 */ 154 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 155 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 156 157 static int dcopyout(struct lwp *, const void *, void *, size_t); 158 159 static int 160 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 161 { 162 int error; 163 164 error = copyout(kaddr, uaddr, len); 165 ktrmibio(-1, UIO_READ, uaddr, len, error); 166 167 return error; 168 } 169 170 #ifdef DIAGNOSTIC 171 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 172 #endif 173 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 174 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 175 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 176 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 177 static int sysctl_setlen(SYSCTLFN_PROTO); 178 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 179 static int sysctl_kern_file(SYSCTLFN_PROTO); 180 static int sysctl_msgbuf(SYSCTLFN_PROTO); 181 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 182 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 183 #if NPTY > 0 184 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 185 #endif /* NPTY > 0 */ 186 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 187 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 188 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 189 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 190 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 191 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 192 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 193 static int sysctl_kern_file2(SYSCTLFN_PROTO); 194 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 195 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 196 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 197 static int sysctl_doeproc(SYSCTLFN_PROTO); 198 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 199 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 200 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 201 202 static u_int sysctl_map_flags(const u_int *, u_int); 203 static void fill_kproc2(struct proc *, struct kinfo_proc2 *, bool); 204 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 205 static void fill_file(struct kinfo_file *, const file_t *, const fdfile_t *, 206 int, pid_t); 207 208 /* 209 * ******************************************************************** 210 * section 1: setup routines 211 * ******************************************************************** 212 * These functions are stuffed into a link set for sysctl setup 213 * functions. They're never called or referenced from anywhere else. 214 * ******************************************************************** 215 */ 216 217 /* 218 * sets up the base nodes... 219 */ 220 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 221 { 222 223 sysctl_createv(clog, 0, NULL, NULL, 224 CTLFLAG_PERMANENT, 225 CTLTYPE_NODE, "kern", 226 SYSCTL_DESCR("High kernel"), 227 NULL, 0, NULL, 0, 228 CTL_KERN, CTL_EOL); 229 sysctl_createv(clog, 0, NULL, NULL, 230 CTLFLAG_PERMANENT, 231 CTLTYPE_NODE, "vm", 232 SYSCTL_DESCR("Virtual memory"), 233 NULL, 0, NULL, 0, 234 CTL_VM, CTL_EOL); 235 sysctl_createv(clog, 0, NULL, NULL, 236 CTLFLAG_PERMANENT, 237 CTLTYPE_NODE, "vfs", 238 SYSCTL_DESCR("Filesystem"), 239 NULL, 0, NULL, 0, 240 CTL_VFS, CTL_EOL); 241 sysctl_createv(clog, 0, NULL, NULL, 242 CTLFLAG_PERMANENT, 243 CTLTYPE_NODE, "net", 244 SYSCTL_DESCR("Networking"), 245 NULL, 0, NULL, 0, 246 CTL_NET, CTL_EOL); 247 sysctl_createv(clog, 0, NULL, NULL, 248 CTLFLAG_PERMANENT, 249 CTLTYPE_NODE, "debug", 250 SYSCTL_DESCR("Debugging"), 251 NULL, 0, NULL, 0, 252 CTL_DEBUG, CTL_EOL); 253 sysctl_createv(clog, 0, NULL, NULL, 254 CTLFLAG_PERMANENT, 255 CTLTYPE_NODE, "hw", 256 SYSCTL_DESCR("Generic CPU, I/O"), 257 NULL, 0, NULL, 0, 258 CTL_HW, CTL_EOL); 259 sysctl_createv(clog, 0, NULL, NULL, 260 CTLFLAG_PERMANENT, 261 CTLTYPE_NODE, "machdep", 262 SYSCTL_DESCR("Machine dependent"), 263 NULL, 0, NULL, 0, 264 CTL_MACHDEP, CTL_EOL); 265 /* 266 * this node is inserted so that the sysctl nodes in libc can 267 * operate. 268 */ 269 sysctl_createv(clog, 0, NULL, NULL, 270 CTLFLAG_PERMANENT, 271 CTLTYPE_NODE, "user", 272 SYSCTL_DESCR("User-level"), 273 NULL, 0, NULL, 0, 274 CTL_USER, CTL_EOL); 275 sysctl_createv(clog, 0, NULL, NULL, 276 CTLFLAG_PERMANENT, 277 CTLTYPE_NODE, "ddb", 278 SYSCTL_DESCR("In-kernel debugger"), 279 NULL, 0, NULL, 0, 280 CTL_DDB, CTL_EOL); 281 sysctl_createv(clog, 0, NULL, NULL, 282 CTLFLAG_PERMANENT, 283 CTLTYPE_NODE, "proc", 284 SYSCTL_DESCR("Per-process"), 285 NULL, 0, NULL, 0, 286 CTL_PROC, CTL_EOL); 287 sysctl_createv(clog, 0, NULL, NULL, 288 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 289 CTLTYPE_NODE, "vendor", 290 SYSCTL_DESCR("Vendor specific"), 291 NULL, 0, NULL, 0, 292 CTL_VENDOR, CTL_EOL); 293 sysctl_createv(clog, 0, NULL, NULL, 294 CTLFLAG_PERMANENT, 295 CTLTYPE_NODE, "emul", 296 SYSCTL_DESCR("Emulation settings"), 297 NULL, 0, NULL, 0, 298 CTL_EMUL, CTL_EOL); 299 sysctl_createv(clog, 0, NULL, NULL, 300 CTLFLAG_PERMANENT, 301 CTLTYPE_NODE, "security", 302 SYSCTL_DESCR("Security"), 303 NULL, 0, NULL, 0, 304 CTL_SECURITY, CTL_EOL); 305 } 306 307 /* 308 * this setup routine is a replacement for kern_sysctl() 309 */ 310 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 311 { 312 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 313 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 314 extern int dumponpanic; /* defined in kern/subr_prf.c */ 315 const struct sysctlnode *rnode; 316 317 sysctl_createv(clog, 0, NULL, NULL, 318 CTLFLAG_PERMANENT, 319 CTLTYPE_NODE, "kern", NULL, 320 NULL, 0, NULL, 0, 321 CTL_KERN, CTL_EOL); 322 323 sysctl_createv(clog, 0, NULL, NULL, 324 CTLFLAG_PERMANENT, 325 CTLTYPE_STRING, "ostype", 326 SYSCTL_DESCR("Operating system type"), 327 NULL, 0, &ostype, 0, 328 CTL_KERN, KERN_OSTYPE, CTL_EOL); 329 sysctl_createv(clog, 0, NULL, NULL, 330 CTLFLAG_PERMANENT, 331 CTLTYPE_STRING, "osrelease", 332 SYSCTL_DESCR("Operating system release"), 333 NULL, 0, &osrelease, 0, 334 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 335 sysctl_createv(clog, 0, NULL, NULL, 336 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 337 CTLTYPE_INT, "osrevision", 338 SYSCTL_DESCR("Operating system revision"), 339 NULL, __NetBSD_Version__, NULL, 0, 340 CTL_KERN, KERN_OSREV, CTL_EOL); 341 sysctl_createv(clog, 0, NULL, NULL, 342 CTLFLAG_PERMANENT, 343 CTLTYPE_STRING, "version", 344 SYSCTL_DESCR("Kernel version"), 345 NULL, 0, &version, 0, 346 CTL_KERN, KERN_VERSION, CTL_EOL); 347 sysctl_createv(clog, 0, NULL, NULL, 348 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 349 CTLTYPE_INT, "maxvnodes", 350 SYSCTL_DESCR("Maximum number of vnodes"), 351 sysctl_kern_maxvnodes, 0, NULL, 0, 352 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 353 sysctl_createv(clog, 0, NULL, NULL, 354 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 355 CTLTYPE_INT, "maxproc", 356 SYSCTL_DESCR("Maximum number of simultaneous processes"), 357 sysctl_kern_maxproc, 0, NULL, 0, 358 CTL_KERN, KERN_MAXPROC, CTL_EOL); 359 sysctl_createv(clog, 0, NULL, NULL, 360 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 361 CTLTYPE_INT, "maxfiles", 362 SYSCTL_DESCR("Maximum number of open files"), 363 NULL, 0, &maxfiles, 0, 364 CTL_KERN, KERN_MAXFILES, CTL_EOL); 365 sysctl_createv(clog, 0, NULL, NULL, 366 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 367 CTLTYPE_INT, "argmax", 368 SYSCTL_DESCR("Maximum number of bytes of arguments to " 369 "execve(2)"), 370 NULL, ARG_MAX, NULL, 0, 371 CTL_KERN, KERN_ARGMAX, CTL_EOL); 372 sysctl_createv(clog, 0, NULL, NULL, 373 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 374 CTLTYPE_STRING, "hostname", 375 SYSCTL_DESCR("System hostname"), 376 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 377 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 378 sysctl_createv(clog, 0, NULL, NULL, 379 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 380 CTLTYPE_INT, "hostid", 381 SYSCTL_DESCR("System host ID number"), 382 sysctl_kern_hostid, 0, NULL, 0, 383 CTL_KERN, KERN_HOSTID, CTL_EOL); 384 sysctl_createv(clog, 0, NULL, NULL, 385 CTLFLAG_PERMANENT, 386 CTLTYPE_STRUCT, "clockrate", 387 SYSCTL_DESCR("Kernel clock rates"), 388 sysctl_kern_clockrate, 0, NULL, 389 sizeof(struct clockinfo), 390 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 391 sysctl_createv(clog, 0, NULL, NULL, 392 CTLFLAG_PERMANENT, 393 CTLTYPE_INT, "hardclock_ticks", 394 SYSCTL_DESCR("Number of hardclock ticks"), 395 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 396 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 397 sysctl_createv(clog, 0, NULL, NULL, 398 CTLFLAG_PERMANENT, 399 CTLTYPE_STRUCT, "vnode", 400 SYSCTL_DESCR("System vnode table"), 401 sysctl_kern_vnode, 0, NULL, 0, 402 CTL_KERN, KERN_VNODE, CTL_EOL); 403 sysctl_createv(clog, 0, NULL, NULL, 404 CTLFLAG_PERMANENT, 405 CTLTYPE_STRUCT, "file", 406 SYSCTL_DESCR("System open file table"), 407 sysctl_kern_file, 0, NULL, 0, 408 CTL_KERN, KERN_FILE, CTL_EOL); 409 #ifndef GPROF 410 sysctl_createv(clog, 0, NULL, NULL, 411 CTLFLAG_PERMANENT, 412 CTLTYPE_NODE, "profiling", 413 SYSCTL_DESCR("Profiling information (not available)"), 414 sysctl_notavail, 0, NULL, 0, 415 CTL_KERN, KERN_PROF, CTL_EOL); 416 #endif 417 sysctl_createv(clog, 0, NULL, NULL, 418 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 419 CTLTYPE_INT, "posix1version", 420 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 421 "with which the operating system attempts " 422 "to comply"), 423 NULL, _POSIX_VERSION, NULL, 0, 424 CTL_KERN, KERN_POSIX1, CTL_EOL); 425 sysctl_createv(clog, 0, NULL, NULL, 426 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 427 CTLTYPE_INT, "ngroups", 428 SYSCTL_DESCR("Maximum number of supplemental groups"), 429 NULL, NGROUPS_MAX, NULL, 0, 430 CTL_KERN, KERN_NGROUPS, CTL_EOL); 431 sysctl_createv(clog, 0, NULL, NULL, 432 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 433 CTLTYPE_INT, "job_control", 434 SYSCTL_DESCR("Whether job control is available"), 435 NULL, 1, NULL, 0, 436 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 437 sysctl_createv(clog, 0, NULL, NULL, 438 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 439 CTLTYPE_INT, "saved_ids", 440 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 441 "available"), NULL, 442 #ifdef _POSIX_SAVED_IDS 443 1, 444 #else /* _POSIX_SAVED_IDS */ 445 0, 446 #endif /* _POSIX_SAVED_IDS */ 447 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 448 sysctl_createv(clog, 0, NULL, NULL, 449 CTLFLAG_PERMANENT|CTLFLAG_HEX, 450 CTLTYPE_INT, "boothowto", 451 SYSCTL_DESCR("Flags from boot loader"), 452 NULL, 0, &boothowto, sizeof(boothowto), 453 CTL_KERN, CTL_CREATE, CTL_EOL); 454 sysctl_createv(clog, 0, NULL, NULL, 455 CTLFLAG_PERMANENT, 456 CTLTYPE_STRUCT, "boottime", 457 SYSCTL_DESCR("System boot time"), 458 NULL, 0, &boottime, sizeof(boottime), 459 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 460 #ifdef COMPAT_50 461 { 462 extern struct timeval50 boottime50; 463 sysctl_createv(clog, 0, NULL, NULL, 464 CTLFLAG_PERMANENT, 465 CTLTYPE_STRUCT, "oboottime", 466 SYSCTL_DESCR("System boot time"), 467 NULL, 0, &boottime50, sizeof(boottime50), 468 CTL_KERN, KERN_OBOOTTIME, CTL_EOL); 469 } 470 #endif 471 sysctl_createv(clog, 0, NULL, NULL, 472 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 473 CTLTYPE_STRING, "domainname", 474 SYSCTL_DESCR("YP domain name"), 475 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 476 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 477 sysctl_createv(clog, 0, NULL, NULL, 478 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 479 CTLTYPE_INT, "maxpartitions", 480 SYSCTL_DESCR("Maximum number of partitions allowed per " 481 "disk"), 482 NULL, MAXPARTITIONS, NULL, 0, 483 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 484 sysctl_createv(clog, 0, NULL, NULL, 485 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 486 CTLTYPE_INT, "rawpartition", 487 SYSCTL_DESCR("Raw partition of a disk"), 488 NULL, RAW_PART, NULL, 0, 489 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 490 sysctl_createv(clog, 0, NULL, NULL, 491 CTLFLAG_PERMANENT, 492 CTLTYPE_STRUCT, "timex", NULL, 493 sysctl_notavail, 0, NULL, 0, 494 CTL_KERN, KERN_TIMEX, CTL_EOL); 495 sysctl_createv(clog, 0, NULL, NULL, 496 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 497 CTLTYPE_INT, "rtc_offset", 498 SYSCTL_DESCR("Offset of real time clock from UTC in " 499 "minutes"), 500 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 501 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 502 sysctl_createv(clog, 0, NULL, NULL, 503 CTLFLAG_PERMANENT, 504 CTLTYPE_STRING, "root_device", 505 SYSCTL_DESCR("Name of the root device"), 506 sysctl_root_device, 0, NULL, 0, 507 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 508 sysctl_createv(clog, 0, NULL, NULL, 509 CTLFLAG_PERMANENT, 510 CTLTYPE_INT, "msgbufsize", 511 SYSCTL_DESCR("Size of the kernel message buffer"), 512 sysctl_msgbuf, 0, NULL, 0, 513 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 514 sysctl_createv(clog, 0, NULL, NULL, 515 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 516 CTLTYPE_INT, "fsync", 517 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 518 "Synchronization Option is available on " 519 "this system"), 520 NULL, 1, NULL, 0, 521 CTL_KERN, KERN_FSYNC, CTL_EOL); 522 sysctl_createv(clog, 0, NULL, NULL, 523 CTLFLAG_PERMANENT, 524 CTLTYPE_NODE, "ipc", 525 SYSCTL_DESCR("SysV IPC options"), 526 NULL, 0, NULL, 0, 527 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 528 sysctl_createv(clog, 0, NULL, NULL, 529 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 530 CTLTYPE_INT, "sysvmsg", 531 SYSCTL_DESCR("System V style message support available"), 532 NULL, 533 #ifdef SYSVMSG 534 1, 535 #else /* SYSVMSG */ 536 0, 537 #endif /* SYSVMSG */ 538 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 539 sysctl_createv(clog, 0, NULL, NULL, 540 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 541 CTLTYPE_INT, "sysvsem", 542 SYSCTL_DESCR("System V style semaphore support " 543 "available"), NULL, 544 #ifdef SYSVSEM 545 1, 546 #else /* SYSVSEM */ 547 0, 548 #endif /* SYSVSEM */ 549 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 550 sysctl_createv(clog, 0, NULL, NULL, 551 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 552 CTLTYPE_INT, "sysvshm", 553 SYSCTL_DESCR("System V style shared memory support " 554 "available"), NULL, 555 #ifdef SYSVSHM 556 1, 557 #else /* SYSVSHM */ 558 0, 559 #endif /* SYSVSHM */ 560 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 561 sysctl_createv(clog, 0, NULL, NULL, 562 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 563 CTLTYPE_INT, "synchronized_io", 564 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 565 "I/O Option is available on this system"), 566 NULL, 1, NULL, 0, 567 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 568 sysctl_createv(clog, 0, NULL, NULL, 569 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 570 CTLTYPE_INT, "iov_max", 571 SYSCTL_DESCR("Maximum number of iovec structures per " 572 "process"), 573 NULL, IOV_MAX, NULL, 0, 574 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 575 sysctl_createv(clog, 0, NULL, NULL, 576 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 577 CTLTYPE_INT, "mapped_files", 578 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 579 "Files Option is available on this system"), 580 NULL, 1, NULL, 0, 581 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 582 sysctl_createv(clog, 0, NULL, NULL, 583 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 584 CTLTYPE_INT, "memlock", 585 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 586 "Locking Option is available on this " 587 "system"), 588 NULL, 1, NULL, 0, 589 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 590 sysctl_createv(clog, 0, NULL, NULL, 591 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 592 CTLTYPE_INT, "memlock_range", 593 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 594 "Locking Option is available on this " 595 "system"), 596 NULL, 1, NULL, 0, 597 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 598 sysctl_createv(clog, 0, NULL, NULL, 599 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 600 CTLTYPE_INT, "memory_protection", 601 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 602 "Protection Option is available on this " 603 "system"), 604 NULL, 1, NULL, 0, 605 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 606 sysctl_createv(clog, 0, NULL, NULL, 607 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 608 CTLTYPE_INT, "login_name_max", 609 SYSCTL_DESCR("Maximum login name length"), 610 NULL, LOGIN_NAME_MAX, NULL, 0, 611 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 612 sysctl_createv(clog, 0, NULL, NULL, 613 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 614 CTLTYPE_STRING, "defcorename", 615 SYSCTL_DESCR("Default core file name"), 616 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 617 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 618 sysctl_createv(clog, 0, NULL, NULL, 619 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 620 CTLTYPE_INT, "logsigexit", 621 SYSCTL_DESCR("Log process exit when caused by signals"), 622 NULL, 0, &kern_logsigexit, 0, 623 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 624 sysctl_createv(clog, 0, NULL, NULL, 625 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 626 CTLTYPE_INT, "fscale", 627 SYSCTL_DESCR("Kernel fixed-point scale factor"), 628 NULL, FSCALE, NULL, 0, 629 CTL_KERN, KERN_FSCALE, CTL_EOL); 630 sysctl_createv(clog, 0, NULL, NULL, 631 CTLFLAG_PERMANENT, 632 CTLTYPE_INT, "ccpu", 633 SYSCTL_DESCR("Scheduler exponential decay value"), 634 NULL, 0, &ccpu, 0, 635 CTL_KERN, KERN_CCPU, CTL_EOL); 636 sysctl_createv(clog, 0, NULL, NULL, 637 CTLFLAG_PERMANENT, 638 CTLTYPE_STRUCT, "cp_time", 639 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 640 sysctl_kern_cptime, 0, NULL, 0, 641 CTL_KERN, KERN_CP_TIME, CTL_EOL); 642 sysctl_createv(clog, 0, NULL, NULL, 643 CTLFLAG_PERMANENT, 644 CTLTYPE_INT, "msgbuf", 645 SYSCTL_DESCR("Kernel message buffer"), 646 sysctl_msgbuf, 0, NULL, 0, 647 CTL_KERN, KERN_MSGBUF, CTL_EOL); 648 sysctl_createv(clog, 0, NULL, NULL, 649 CTLFLAG_PERMANENT, 650 CTLTYPE_STRUCT, "consdev", 651 SYSCTL_DESCR("Console device"), 652 sysctl_consdev, 0, NULL, sizeof(dev_t), 653 CTL_KERN, KERN_CONSDEV, CTL_EOL); 654 #if NPTY > 0 655 sysctl_createv(clog, 0, NULL, NULL, 656 CTLFLAG_PERMANENT, 657 CTLTYPE_INT, "maxptys", 658 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 659 sysctl_kern_maxptys, 0, NULL, 0, 660 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 661 #endif /* NPTY > 0 */ 662 sysctl_createv(clog, 0, NULL, NULL, 663 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 664 CTLTYPE_INT, "maxphys", 665 SYSCTL_DESCR("Maximum raw I/O transfer size"), 666 NULL, MAXPHYS, NULL, 0, 667 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 668 sysctl_createv(clog, 0, NULL, NULL, 669 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 670 CTLTYPE_INT, "sbmax", 671 SYSCTL_DESCR("Maximum socket buffer size"), 672 sysctl_kern_sbmax, 0, NULL, 0, 673 CTL_KERN, KERN_SBMAX, CTL_EOL); 674 sysctl_createv(clog, 0, NULL, NULL, 675 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 676 CTLTYPE_INT, "monotonic_clock", 677 SYSCTL_DESCR("Implementation version of the POSIX " 678 "1003.1b Monotonic Clock Option"), 679 /* XXX _POSIX_VERSION */ 680 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 681 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 682 sysctl_createv(clog, 0, NULL, NULL, 683 CTLFLAG_PERMANENT, 684 CTLTYPE_INT, "urandom", 685 SYSCTL_DESCR("Random integer value"), 686 sysctl_kern_urnd, 0, NULL, 0, 687 CTL_KERN, KERN_URND, CTL_EOL); 688 sysctl_createv(clog, 0, NULL, NULL, 689 CTLFLAG_PERMANENT, 690 CTLTYPE_INT, "arandom", 691 SYSCTL_DESCR("n bytes of random data"), 692 sysctl_kern_arnd, 0, NULL, 0, 693 CTL_KERN, KERN_ARND, CTL_EOL); 694 sysctl_createv(clog, 0, NULL, NULL, 695 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 696 CTLTYPE_INT, "labelsector", 697 SYSCTL_DESCR("Sector number containing the disklabel"), 698 NULL, LABELSECTOR, NULL, 0, 699 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 700 sysctl_createv(clog, 0, NULL, NULL, 701 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 702 CTLTYPE_INT, "labeloffset", 703 SYSCTL_DESCR("Offset of the disklabel within the " 704 "sector"), 705 NULL, LABELOFFSET, NULL, 0, 706 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 707 sysctl_createv(clog, 0, NULL, NULL, 708 CTLFLAG_PERMANENT, 709 CTLTYPE_NODE, "lwp", 710 SYSCTL_DESCR("System-wide LWP information"), 711 sysctl_kern_lwp, 0, NULL, 0, 712 CTL_KERN, KERN_LWP, CTL_EOL); 713 sysctl_createv(clog, 0, NULL, NULL, 714 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 715 CTLTYPE_INT, "forkfsleep", 716 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 717 "to process limits"), 718 sysctl_kern_forkfsleep, 0, NULL, 0, 719 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 720 sysctl_createv(clog, 0, NULL, NULL, 721 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 722 CTLTYPE_INT, "posix_threads", 723 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 724 "Threads option to which the system " 725 "attempts to conform"), 726 /* XXX _POSIX_VERSION */ 727 NULL, _POSIX_THREADS, NULL, 0, 728 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 729 sysctl_createv(clog, 0, NULL, NULL, 730 CTLFLAG_PERMANENT, 731 CTLTYPE_INT, "posix_semaphores", 732 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 733 "Semaphores option to which the system " 734 "attempts to conform"), NULL, 735 0, &posix_semaphores, 736 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 737 sysctl_createv(clog, 0, NULL, NULL, 738 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 739 CTLTYPE_INT, "posix_barriers", 740 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 741 "Barriers option to which the system " 742 "attempts to conform"), 743 /* XXX _POSIX_VERSION */ 744 NULL, _POSIX_BARRIERS, NULL, 0, 745 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 746 sysctl_createv(clog, 0, NULL, NULL, 747 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 748 CTLTYPE_INT, "posix_timers", 749 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 750 "Timers option to which the system " 751 "attempts to conform"), 752 /* XXX _POSIX_VERSION */ 753 NULL, _POSIX_TIMERS, NULL, 0, 754 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 755 sysctl_createv(clog, 0, NULL, NULL, 756 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 757 CTLTYPE_INT, "posix_spin_locks", 758 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 759 "Locks option to which the system attempts " 760 "to conform"), 761 /* XXX _POSIX_VERSION */ 762 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 763 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 764 sysctl_createv(clog, 0, NULL, NULL, 765 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 766 CTLTYPE_INT, "posix_reader_writer_locks", 767 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 768 "Read-Write Locks option to which the " 769 "system attempts to conform"), 770 /* XXX _POSIX_VERSION */ 771 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 772 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 773 sysctl_createv(clog, 0, NULL, NULL, 774 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 775 CTLTYPE_INT, "dump_on_panic", 776 SYSCTL_DESCR("Perform a crash dump on system panic"), 777 NULL, 0, &dumponpanic, 0, 778 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 779 #ifdef DIAGNOSTIC 780 sysctl_createv(clog, 0, NULL, NULL, 781 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 782 CTLTYPE_INT, "panic_now", 783 SYSCTL_DESCR("Trigger a panic"), 784 sysctl_kern_trigger_panic, 0, NULL, 0, 785 CTL_KERN, CTL_CREATE, CTL_EOL); 786 #endif 787 sysctl_createv(clog, 0, NULL, NULL, 788 CTLFLAG_PERMANENT, 789 CTLTYPE_INT, "root_partition", 790 SYSCTL_DESCR("Root partition on the root device"), 791 sysctl_kern_root_partition, 0, NULL, 0, 792 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 793 sysctl_createv(clog, 0, NULL, NULL, 794 CTLFLAG_PERMANENT, 795 CTLTYPE_STRUCT, "drivers", 796 SYSCTL_DESCR("List of all drivers with block and " 797 "character device numbers"), 798 sysctl_kern_drivers, 0, NULL, 0, 799 CTL_KERN, KERN_DRIVERS, CTL_EOL); 800 sysctl_createv(clog, 0, NULL, NULL, 801 CTLFLAG_PERMANENT, 802 CTLTYPE_STRUCT, "file2", 803 SYSCTL_DESCR("System open file table"), 804 sysctl_kern_file2, 0, NULL, 0, 805 CTL_KERN, KERN_FILE2, CTL_EOL); 806 sysctl_createv(clog, 0, NULL, NULL, 807 CTLFLAG_PERMANENT, 808 CTLTYPE_STRUCT, "cp_id", 809 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 810 sysctl_kern_cpid, 0, NULL, 0, 811 CTL_KERN, KERN_CP_ID, CTL_EOL); 812 sysctl_createv(clog, 0, NULL, &rnode, 813 CTLFLAG_PERMANENT, 814 CTLTYPE_NODE, "coredump", 815 SYSCTL_DESCR("Coredump settings."), 816 NULL, 0, NULL, 0, 817 CTL_KERN, CTL_CREATE, CTL_EOL); 818 sysctl_createv(clog, 0, &rnode, &rnode, 819 CTLFLAG_PERMANENT, 820 CTLTYPE_NODE, "setid", 821 SYSCTL_DESCR("Set-id processes' coredump settings."), 822 NULL, 0, NULL, 0, 823 CTL_CREATE, CTL_EOL); 824 sysctl_createv(clog, 0, &rnode, NULL, 825 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 826 CTLTYPE_INT, "dump", 827 SYSCTL_DESCR("Allow set-id processes to dump core."), 828 sysctl_security_setidcore, 0, &security_setidcore_dump, 829 sizeof(security_setidcore_dump), 830 CTL_CREATE, CTL_EOL); 831 sysctl_createv(clog, 0, &rnode, NULL, 832 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 833 CTLTYPE_STRING, "path", 834 SYSCTL_DESCR("Path pattern for set-id coredumps."), 835 sysctl_security_setidcorename, 0, 836 &security_setidcore_path, 837 sizeof(security_setidcore_path), 838 CTL_CREATE, CTL_EOL); 839 sysctl_createv(clog, 0, &rnode, NULL, 840 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 841 CTLTYPE_INT, "owner", 842 SYSCTL_DESCR("Owner id for set-id processes' cores."), 843 sysctl_security_setidcore, 0, &security_setidcore_owner, 844 0, 845 CTL_CREATE, CTL_EOL); 846 sysctl_createv(clog, 0, &rnode, NULL, 847 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 848 CTLTYPE_INT, "group", 849 SYSCTL_DESCR("Group id for set-id processes' cores."), 850 sysctl_security_setidcore, 0, &security_setidcore_group, 851 0, 852 CTL_CREATE, CTL_EOL); 853 sysctl_createv(clog, 0, &rnode, NULL, 854 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 855 CTLTYPE_INT, "mode", 856 SYSCTL_DESCR("Mode for set-id processes' cores."), 857 sysctl_security_setidcore, 0, &security_setidcore_mode, 858 0, 859 CTL_CREATE, CTL_EOL); 860 #ifdef KERN_SA 861 sysctl_createv(clog, 0, NULL, NULL, 862 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 863 CTLTYPE_INT, "no_sa_support", 864 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 865 NULL, 0, &sa_system_disabled, 0, 866 CTL_KERN, CTL_CREATE, CTL_EOL); 867 #else 868 sysctl_createv(clog, 0, NULL, NULL, 869 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 870 CTLTYPE_INT, "no_sa_support", 871 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 872 NULL, 1, NULL, 0, 873 CTL_KERN, CTL_CREATE, CTL_EOL); 874 #endif 875 876 /* kern.posix. */ 877 sysctl_createv(clog, 0, NULL, &rnode, 878 CTLFLAG_PERMANENT, 879 CTLTYPE_NODE, "posix", 880 SYSCTL_DESCR("POSIX options"), 881 NULL, 0, NULL, 0, 882 CTL_KERN, CTL_CREATE, CTL_EOL); 883 sysctl_createv(clog, 0, &rnode, NULL, 884 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 885 CTLTYPE_INT, "semmax", 886 SYSCTL_DESCR("Maximal number of semaphores"), 887 NULL, 0, &ksem_max, 0, 888 CTL_CREATE, CTL_EOL); 889 } 890 891 SYSCTL_SETUP(sysctl_kern_proc_setup, 892 "sysctl kern.proc/proc2/proc_args subtree setup") 893 { 894 895 sysctl_createv(clog, 0, NULL, NULL, 896 CTLFLAG_PERMANENT, 897 CTLTYPE_NODE, "kern", NULL, 898 NULL, 0, NULL, 0, 899 CTL_KERN, CTL_EOL); 900 901 sysctl_createv(clog, 0, NULL, NULL, 902 CTLFLAG_PERMANENT, 903 CTLTYPE_NODE, "proc", 904 SYSCTL_DESCR("System-wide process information"), 905 sysctl_doeproc, 0, NULL, 0, 906 CTL_KERN, KERN_PROC, CTL_EOL); 907 sysctl_createv(clog, 0, NULL, NULL, 908 CTLFLAG_PERMANENT, 909 CTLTYPE_NODE, "proc2", 910 SYSCTL_DESCR("Machine-independent process information"), 911 sysctl_doeproc, 0, NULL, 0, 912 CTL_KERN, KERN_PROC2, CTL_EOL); 913 sysctl_createv(clog, 0, NULL, NULL, 914 CTLFLAG_PERMANENT, 915 CTLTYPE_NODE, "proc_args", 916 SYSCTL_DESCR("Process argument information"), 917 sysctl_kern_proc_args, 0, NULL, 0, 918 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 919 920 /* 921 "nodes" under these: 922 923 KERN_PROC_ALL 924 KERN_PROC_PID pid 925 KERN_PROC_PGRP pgrp 926 KERN_PROC_SESSION sess 927 KERN_PROC_TTY tty 928 KERN_PROC_UID uid 929 KERN_PROC_RUID uid 930 KERN_PROC_GID gid 931 KERN_PROC_RGID gid 932 933 all in all, probably not worth the effort... 934 */ 935 } 936 937 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 938 { 939 u_int u; 940 u_quad_t q; 941 942 sysctl_createv(clog, 0, NULL, NULL, 943 CTLFLAG_PERMANENT, 944 CTLTYPE_NODE, "hw", NULL, 945 NULL, 0, NULL, 0, 946 CTL_HW, CTL_EOL); 947 948 sysctl_createv(clog, 0, NULL, NULL, 949 CTLFLAG_PERMANENT, 950 CTLTYPE_STRING, "machine", 951 SYSCTL_DESCR("Machine class"), 952 NULL, 0, machine, 0, 953 CTL_HW, HW_MACHINE, CTL_EOL); 954 sysctl_createv(clog, 0, NULL, NULL, 955 CTLFLAG_PERMANENT, 956 CTLTYPE_STRING, "model", 957 SYSCTL_DESCR("Machine model"), 958 NULL, 0, cpu_model, 0, 959 CTL_HW, HW_MODEL, CTL_EOL); 960 sysctl_createv(clog, 0, NULL, NULL, 961 CTLFLAG_PERMANENT, 962 CTLTYPE_INT, "ncpu", 963 SYSCTL_DESCR("Number of CPUs configured"), 964 NULL, 0, &ncpu, 0, 965 CTL_HW, HW_NCPU, CTL_EOL); 966 sysctl_createv(clog, 0, NULL, NULL, 967 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 968 CTLTYPE_INT, "byteorder", 969 SYSCTL_DESCR("System byte order"), 970 NULL, BYTE_ORDER, NULL, 0, 971 CTL_HW, HW_BYTEORDER, CTL_EOL); 972 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 973 UINT_MAX : physmem * PAGE_SIZE; 974 sysctl_createv(clog, 0, NULL, NULL, 975 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 976 CTLTYPE_INT, "physmem", 977 SYSCTL_DESCR("Bytes of physical memory"), 978 NULL, u, NULL, 0, 979 CTL_HW, HW_PHYSMEM, CTL_EOL); 980 sysctl_createv(clog, 0, NULL, NULL, 981 CTLFLAG_PERMANENT, 982 CTLTYPE_INT, "usermem", 983 SYSCTL_DESCR("Bytes of non-kernel memory"), 984 sysctl_hw_usermem, 0, NULL, 0, 985 CTL_HW, HW_USERMEM, CTL_EOL); 986 sysctl_createv(clog, 0, NULL, NULL, 987 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 988 CTLTYPE_INT, "pagesize", 989 SYSCTL_DESCR("Software page size"), 990 NULL, PAGE_SIZE, NULL, 0, 991 CTL_HW, HW_PAGESIZE, CTL_EOL); 992 sysctl_createv(clog, 0, NULL, NULL, 993 CTLFLAG_PERMANENT, 994 CTLTYPE_STRING, "machine_arch", 995 SYSCTL_DESCR("Machine CPU class"), 996 NULL, 0, machine_arch, 0, 997 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 998 sysctl_createv(clog, 0, NULL, NULL, 999 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 1000 CTLTYPE_INT, "alignbytes", 1001 SYSCTL_DESCR("Alignment constraint for all possible " 1002 "data types"), 1003 NULL, ALIGNBYTES, NULL, 0, 1004 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 1005 sysctl_createv(clog, 0, NULL, NULL, 1006 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 1007 CTLTYPE_STRING, "cnmagic", 1008 SYSCTL_DESCR("Console magic key sequence"), 1009 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 1010 CTL_HW, HW_CNMAGIC, CTL_EOL); 1011 q = (u_quad_t)physmem * PAGE_SIZE; 1012 sysctl_createv(clog, 0, NULL, NULL, 1013 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 1014 CTLTYPE_QUAD, "physmem64", 1015 SYSCTL_DESCR("Bytes of physical memory"), 1016 NULL, q, NULL, 0, 1017 CTL_HW, HW_PHYSMEM64, CTL_EOL); 1018 sysctl_createv(clog, 0, NULL, NULL, 1019 CTLFLAG_PERMANENT, 1020 CTLTYPE_QUAD, "usermem64", 1021 SYSCTL_DESCR("Bytes of non-kernel memory"), 1022 sysctl_hw_usermem, 0, NULL, 0, 1023 CTL_HW, HW_USERMEM64, CTL_EOL); 1024 sysctl_createv(clog, 0, NULL, NULL, 1025 CTLFLAG_PERMANENT, 1026 CTLTYPE_INT, "ncpuonline", 1027 SYSCTL_DESCR("Number of CPUs online"), 1028 NULL, 0, &ncpuonline, 0, 1029 CTL_HW, HW_NCPUONLINE, CTL_EOL); 1030 } 1031 1032 #ifdef DEBUG 1033 /* 1034 * Debugging related system variables. 1035 */ 1036 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 1037 struct ctldebug debug5, debug6, debug7, debug8, debug9; 1038 struct ctldebug debug10, debug11, debug12, debug13, debug14; 1039 struct ctldebug debug15, debug16, debug17, debug18, debug19; 1040 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 1041 &debug0, &debug1, &debug2, &debug3, &debug4, 1042 &debug5, &debug6, &debug7, &debug8, &debug9, 1043 &debug10, &debug11, &debug12, &debug13, &debug14, 1044 &debug15, &debug16, &debug17, &debug18, &debug19, 1045 }; 1046 1047 /* 1048 * this setup routine is a replacement for debug_sysctl() 1049 * 1050 * note that it creates several nodes per defined debug variable 1051 */ 1052 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 1053 { 1054 struct ctldebug *cdp; 1055 char nodename[20]; 1056 int i; 1057 1058 /* 1059 * two ways here: 1060 * 1061 * the "old" way (debug.name -> value) which was emulated by 1062 * the sysctl(8) binary 1063 * 1064 * the new way, which the sysctl(8) binary was actually using 1065 1066 node debug 1067 node debug.0 1068 string debug.0.name 1069 int debug.0.value 1070 int debug.name 1071 1072 */ 1073 1074 sysctl_createv(clog, 0, NULL, NULL, 1075 CTLFLAG_PERMANENT, 1076 CTLTYPE_NODE, "debug", NULL, 1077 NULL, 0, NULL, 0, 1078 CTL_DEBUG, CTL_EOL); 1079 1080 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 1081 cdp = debugvars[i]; 1082 if (cdp->debugname == NULL || cdp->debugvar == NULL) 1083 continue; 1084 1085 snprintf(nodename, sizeof(nodename), "debug%d", i); 1086 sysctl_createv(clog, 0, NULL, NULL, 1087 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1088 CTLTYPE_NODE, nodename, NULL, 1089 NULL, 0, NULL, 0, 1090 CTL_DEBUG, i, CTL_EOL); 1091 sysctl_createv(clog, 0, NULL, NULL, 1092 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1093 CTLTYPE_STRING, "name", NULL, 1094 /*XXXUNCONST*/ 1095 NULL, 0, __UNCONST(cdp->debugname), 0, 1096 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 1097 sysctl_createv(clog, 0, NULL, NULL, 1098 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1099 CTLTYPE_INT, "value", NULL, 1100 NULL, 0, cdp->debugvar, 0, 1101 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 1102 sysctl_createv(clog, 0, NULL, NULL, 1103 CTLFLAG_PERMANENT, 1104 CTLTYPE_INT, cdp->debugname, NULL, 1105 NULL, 0, cdp->debugvar, 0, 1106 CTL_DEBUG, CTL_CREATE, CTL_EOL); 1107 } 1108 } 1109 #endif /* DEBUG */ 1110 1111 /* 1112 * ******************************************************************** 1113 * section 2: private node-specific helper routines. 1114 * ******************************************************************** 1115 */ 1116 1117 #ifdef DIAGNOSTIC 1118 static int 1119 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 1120 { 1121 int newtrig, error; 1122 struct sysctlnode node; 1123 1124 newtrig = 0; 1125 node = *rnode; 1126 node.sysctl_data = &newtrig; 1127 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1128 if (error || newp == NULL) 1129 return (error); 1130 1131 if (newtrig != 0) 1132 panic("Panic triggered"); 1133 1134 return (error); 1135 } 1136 #endif 1137 1138 /* 1139 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 1140 * new value is lower than desiredvnodes and then calls reinit 1141 * routines that needs to adjust to the new value. 1142 */ 1143 static int 1144 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 1145 { 1146 int error, new_vnodes, old_vnodes, new_max; 1147 struct sysctlnode node; 1148 1149 new_vnodes = desiredvnodes; 1150 node = *rnode; 1151 node.sysctl_data = &new_vnodes; 1152 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1153 if (error || newp == NULL) 1154 return (error); 1155 1156 /* Limits: 75% of KVA and physical memory. */ 1157 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 1158 if (new_vnodes > new_max) 1159 new_vnodes = new_max; 1160 1161 old_vnodes = desiredvnodes; 1162 desiredvnodes = new_vnodes; 1163 if (new_vnodes < old_vnodes) { 1164 error = vfs_drainvnodes(new_vnodes, l); 1165 if (error) { 1166 desiredvnodes = old_vnodes; 1167 return (error); 1168 } 1169 } 1170 vfs_reinit(); 1171 nchreinit(); 1172 1173 return (0); 1174 } 1175 1176 /* 1177 * sysctl helper routine for rtc_offset - set time after changes 1178 */ 1179 static int 1180 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1181 { 1182 struct timespec ts, delta; 1183 int error, new_rtc_offset; 1184 struct sysctlnode node; 1185 1186 new_rtc_offset = rtc_offset; 1187 node = *rnode; 1188 node.sysctl_data = &new_rtc_offset; 1189 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1190 if (error || newp == NULL) 1191 return (error); 1192 1193 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1194 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1195 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1196 return (EPERM); 1197 if (rtc_offset == new_rtc_offset) 1198 return (0); 1199 1200 /* if we change the offset, adjust the time */ 1201 nanotime(&ts); 1202 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1203 delta.tv_nsec = 0; 1204 timespecadd(&ts, &delta, &ts); 1205 rtc_offset = new_rtc_offset; 1206 return (settime(l->l_proc, &ts)); 1207 } 1208 1209 /* 1210 * sysctl helper routine for kern.maxproc. Ensures that the new 1211 * values are not too low or too high. 1212 */ 1213 static int 1214 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1215 { 1216 int error, nmaxproc; 1217 struct sysctlnode node; 1218 1219 nmaxproc = maxproc; 1220 node = *rnode; 1221 node.sysctl_data = &nmaxproc; 1222 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1223 if (error || newp == NULL) 1224 return (error); 1225 1226 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1227 return (EINVAL); 1228 #ifdef __HAVE_CPU_MAXPROC 1229 if (nmaxproc > cpu_maxproc()) 1230 return (EINVAL); 1231 #endif 1232 maxproc = nmaxproc; 1233 1234 return (0); 1235 } 1236 1237 /* 1238 * sysctl helper function for kern.hostid. The hostid is a long, but 1239 * we export it as an int, so we need to give it a little help. 1240 */ 1241 static int 1242 sysctl_kern_hostid(SYSCTLFN_ARGS) 1243 { 1244 int error, inthostid; 1245 struct sysctlnode node; 1246 1247 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1248 node = *rnode; 1249 node.sysctl_data = &inthostid; 1250 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1251 if (error || newp == NULL) 1252 return (error); 1253 1254 hostid = (unsigned)inthostid; 1255 1256 return (0); 1257 } 1258 1259 /* 1260 * sysctl helper function for kern.hostname and kern.domainnname. 1261 * resets the relevant recorded length when the underlying name is 1262 * changed. 1263 */ 1264 static int 1265 sysctl_setlen(SYSCTLFN_ARGS) 1266 { 1267 int error; 1268 1269 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1270 if (error || newp == NULL) 1271 return (error); 1272 1273 switch (rnode->sysctl_num) { 1274 case KERN_HOSTNAME: 1275 hostnamelen = strlen((const char*)rnode->sysctl_data); 1276 break; 1277 case KERN_DOMAINNAME: 1278 domainnamelen = strlen((const char*)rnode->sysctl_data); 1279 break; 1280 } 1281 1282 return (0); 1283 } 1284 1285 /* 1286 * sysctl helper routine for kern.clockrate. Assembles a struct on 1287 * the fly to be returned to the caller. 1288 */ 1289 static int 1290 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1291 { 1292 struct clockinfo clkinfo; 1293 struct sysctlnode node; 1294 1295 clkinfo.tick = tick; 1296 clkinfo.tickadj = tickadj; 1297 clkinfo.hz = hz; 1298 clkinfo.profhz = profhz; 1299 clkinfo.stathz = stathz ? stathz : hz; 1300 1301 node = *rnode; 1302 node.sysctl_data = &clkinfo; 1303 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1304 } 1305 1306 1307 /* 1308 * sysctl helper routine for kern.file pseudo-subtree. 1309 */ 1310 static int 1311 sysctl_kern_file(SYSCTLFN_ARGS) 1312 { 1313 int error; 1314 size_t buflen; 1315 struct file *fp, *dp, *np, fbuf; 1316 char *start, *where; 1317 1318 start = where = oldp; 1319 buflen = *oldlenp; 1320 dp = NULL; 1321 1322 if (where == NULL) { 1323 /* 1324 * overestimate by 10 files 1325 */ 1326 *oldlenp = sizeof(filehead) + (nfiles + 10) * 1327 sizeof(struct file); 1328 return (0); 1329 } 1330 1331 /* 1332 * first dcopyout filehead 1333 */ 1334 if (buflen < sizeof(filehead)) { 1335 *oldlenp = 0; 1336 return (0); 1337 } 1338 sysctl_unlock(); 1339 error = dcopyout(l, &filehead, where, sizeof(filehead)); 1340 if (error) { 1341 sysctl_relock(); 1342 return error; 1343 } 1344 buflen -= sizeof(filehead); 1345 where += sizeof(filehead); 1346 1347 /* 1348 * allocate dummy file descriptor to make position in list 1349 */ 1350 if ((dp = fgetdummy()) == NULL) { 1351 sysctl_relock(); 1352 return ENOMEM; 1353 } 1354 1355 /* 1356 * followed by an array of file structures 1357 */ 1358 mutex_enter(&filelist_lock); 1359 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1360 np = LIST_NEXT(fp, f_list); 1361 mutex_enter(&fp->f_lock); 1362 if (fp->f_count == 0) { 1363 mutex_exit(&fp->f_lock); 1364 continue; 1365 } 1366 /* 1367 * XXX Need to prevent that from being an alternative way 1368 * XXX to getting process information. 1369 */ 1370 if (kauth_authorize_generic(l->l_cred, 1371 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 1372 mutex_exit(&fp->f_lock); 1373 continue; 1374 } 1375 if (buflen < sizeof(struct file)) { 1376 *oldlenp = where - start; 1377 mutex_exit(&fp->f_lock); 1378 error = ENOMEM; 1379 break; 1380 } 1381 memcpy(&fbuf, fp, sizeof(fbuf)); 1382 LIST_INSERT_AFTER(fp, dp, f_list); 1383 mutex_exit(&fp->f_lock); 1384 mutex_exit(&filelist_lock); 1385 error = dcopyout(l, &fbuf, where, sizeof(fbuf)); 1386 if (error) { 1387 mutex_enter(&filelist_lock); 1388 LIST_REMOVE(dp, f_list); 1389 break; 1390 } 1391 buflen -= sizeof(struct file); 1392 where += sizeof(struct file); 1393 mutex_enter(&filelist_lock); 1394 np = LIST_NEXT(dp, f_list); 1395 LIST_REMOVE(dp, f_list); 1396 } 1397 mutex_exit(&filelist_lock); 1398 *oldlenp = where - start; 1399 if (dp != NULL) 1400 fputdummy(dp); 1401 sysctl_relock(); 1402 return (error); 1403 } 1404 1405 /* 1406 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1407 * former it merely checks the message buffer is set up. For the latter, 1408 * it also copies out the data if necessary. 1409 */ 1410 static int 1411 sysctl_msgbuf(SYSCTLFN_ARGS) 1412 { 1413 char *where = oldp; 1414 size_t len, maxlen; 1415 long beg, end; 1416 extern kmutex_t log_lock; 1417 int error; 1418 1419 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1420 msgbufenabled = 0; 1421 return (ENXIO); 1422 } 1423 1424 switch (rnode->sysctl_num) { 1425 case KERN_MSGBUFSIZE: { 1426 struct sysctlnode node = *rnode; 1427 int msg_bufs = (int)msgbufp->msg_bufs; 1428 node.sysctl_data = &msg_bufs; 1429 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1430 } 1431 case KERN_MSGBUF: 1432 break; 1433 default: 1434 return (EOPNOTSUPP); 1435 } 1436 1437 if (newp != NULL) 1438 return (EPERM); 1439 1440 if (oldp == NULL) { 1441 /* always return full buffer size */ 1442 *oldlenp = msgbufp->msg_bufs; 1443 return (0); 1444 } 1445 1446 sysctl_unlock(); 1447 1448 /* 1449 * First, copy from the write pointer to the end of 1450 * message buffer. 1451 */ 1452 error = 0; 1453 mutex_spin_enter(&log_lock); 1454 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1455 beg = msgbufp->msg_bufx; 1456 end = msgbufp->msg_bufs; 1457 mutex_spin_exit(&log_lock); 1458 1459 while (maxlen > 0) { 1460 len = MIN(end - beg, maxlen); 1461 if (len == 0) 1462 break; 1463 /* XXX unlocked, but hardly matters. */ 1464 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1465 if (error) 1466 break; 1467 where += len; 1468 maxlen -= len; 1469 1470 /* 1471 * ... then, copy from the beginning of message buffer to 1472 * the write pointer. 1473 */ 1474 beg = 0; 1475 end = msgbufp->msg_bufx; 1476 } 1477 1478 sysctl_relock(); 1479 return (error); 1480 } 1481 1482 /* 1483 * sysctl helper routine for kern.defcorename. In the case of a new 1484 * string being assigned, check that it's not a zero-length string. 1485 * (XXX the check in -current doesn't work, but do we really care?) 1486 */ 1487 static int 1488 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1489 { 1490 int error; 1491 char *newcorename; 1492 struct sysctlnode node; 1493 1494 newcorename = PNBUF_GET(); 1495 node = *rnode; 1496 node.sysctl_data = &newcorename[0]; 1497 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1498 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1499 if (error || newp == NULL) { 1500 goto done; 1501 } 1502 1503 /* 1504 * when sysctl_lookup() deals with a string, it's guaranteed 1505 * to come back nul terminated. So there. :) 1506 */ 1507 if (strlen(newcorename) == 0) { 1508 error = EINVAL; 1509 } else { 1510 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1511 error = 0; 1512 } 1513 done: 1514 PNBUF_PUT(newcorename); 1515 return error; 1516 } 1517 1518 /* 1519 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1520 * across all cpus. 1521 */ 1522 static int 1523 sysctl_kern_cptime(SYSCTLFN_ARGS) 1524 { 1525 struct sysctlnode node = *rnode; 1526 uint64_t *cp_time = NULL; 1527 int error, n = ncpu, i; 1528 struct cpu_info *ci; 1529 CPU_INFO_ITERATOR cii; 1530 1531 /* 1532 * if you specifically pass a buffer that is the size of the 1533 * sum, or if you are probing for the size, you get the "sum" 1534 * of cp_time (and the size thereof) across all processors. 1535 * 1536 * alternately, you can pass an additional mib number and get 1537 * cp_time for that particular processor. 1538 */ 1539 switch (namelen) { 1540 case 0: 1541 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1542 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1543 n = -1; /* SUM */ 1544 } 1545 else { 1546 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1547 n = -2; /* ALL */ 1548 } 1549 break; 1550 case 1: 1551 if (name[0] < 0 || name[0] >= n) 1552 return (ENOENT); /* ENOSUCHPROCESSOR */ 1553 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1554 n = name[0]; 1555 /* 1556 * adjust these so that sysctl_lookup() will be happy 1557 */ 1558 name++; 1559 namelen--; 1560 break; 1561 default: 1562 return (EINVAL); 1563 } 1564 1565 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1566 if (cp_time == NULL) 1567 return (ENOMEM); 1568 node.sysctl_data = cp_time; 1569 memset(cp_time, 0, node.sysctl_size); 1570 1571 for (CPU_INFO_FOREACH(cii, ci)) { 1572 if (n <= 0) { 1573 for (i = 0; i < CPUSTATES; i++) { 1574 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1575 } 1576 } 1577 /* 1578 * if a specific processor was requested and we just 1579 * did it, we're done here 1580 */ 1581 if (n == 0) 1582 break; 1583 /* 1584 * if doing "all", skip to next cp_time set for next processor 1585 */ 1586 if (n == -2) 1587 cp_time += CPUSTATES; 1588 /* 1589 * if we're doing a specific processor, we're one 1590 * processor closer 1591 */ 1592 if (n > 0) 1593 n--; 1594 } 1595 1596 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1597 kmem_free(node.sysctl_data, node.sysctl_size); 1598 return (error); 1599 } 1600 1601 #if NPTY > 0 1602 /* 1603 * sysctl helper routine for kern.maxptys. Ensures that any new value 1604 * is acceptable to the pty subsystem. 1605 */ 1606 static int 1607 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1608 { 1609 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1610 int error, xmax; 1611 struct sysctlnode node; 1612 1613 /* get current value of maxptys */ 1614 xmax = pty_maxptys(0, 0); 1615 1616 node = *rnode; 1617 node.sysctl_data = &xmax; 1618 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1619 if (error || newp == NULL) 1620 return (error); 1621 1622 if (xmax != pty_maxptys(xmax, 1)) 1623 return (EINVAL); 1624 1625 return (0); 1626 } 1627 #endif /* NPTY > 0 */ 1628 1629 /* 1630 * sysctl helper routine for kern.sbmax. Basically just ensures that 1631 * any new value is not too small. 1632 */ 1633 static int 1634 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1635 { 1636 int error, new_sbmax; 1637 struct sysctlnode node; 1638 1639 new_sbmax = sb_max; 1640 node = *rnode; 1641 node.sysctl_data = &new_sbmax; 1642 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1643 if (error || newp == NULL) 1644 return (error); 1645 1646 KERNEL_LOCK(1, NULL); 1647 error = sb_max_set(new_sbmax); 1648 KERNEL_UNLOCK_ONE(NULL); 1649 1650 return (error); 1651 } 1652 1653 /* 1654 * sysctl helper routine for kern.urandom node. Picks a random number 1655 * for you. 1656 */ 1657 static int 1658 sysctl_kern_urnd(SYSCTLFN_ARGS) 1659 { 1660 #if NRND > 0 1661 int v, rv; 1662 1663 KERNEL_LOCK(1, NULL); 1664 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1665 KERNEL_UNLOCK_ONE(NULL); 1666 if (rv == sizeof(v)) { 1667 struct sysctlnode node = *rnode; 1668 node.sysctl_data = &v; 1669 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1670 } 1671 else 1672 return (EIO); /*XXX*/ 1673 #else 1674 return (EOPNOTSUPP); 1675 #endif 1676 } 1677 1678 /* 1679 * sysctl helper routine for kern.arandom node. Picks a random number 1680 * for you. 1681 */ 1682 static int 1683 sysctl_kern_arnd(SYSCTLFN_ARGS) 1684 { 1685 #if NRND > 0 1686 int error; 1687 void *v; 1688 struct sysctlnode node = *rnode; 1689 1690 if (*oldlenp == 0) 1691 return 0; 1692 if (*oldlenp > 8192) 1693 return E2BIG; 1694 1695 v = kmem_alloc(*oldlenp, KM_SLEEP); 1696 arc4randbytes(v, *oldlenp); 1697 node.sysctl_data = v; 1698 node.sysctl_size = *oldlenp; 1699 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1700 kmem_free(v, *oldlenp); 1701 return error; 1702 #else 1703 return (EOPNOTSUPP); 1704 #endif 1705 } 1706 /* 1707 * sysctl helper routine to do kern.lwp.* work. 1708 */ 1709 static int 1710 sysctl_kern_lwp(SYSCTLFN_ARGS) 1711 { 1712 struct kinfo_lwp klwp; 1713 struct proc *p; 1714 struct lwp *l2, *l3; 1715 char *where, *dp; 1716 int pid, elem_size, elem_count; 1717 int buflen, needed, error; 1718 bool gotit; 1719 1720 if (namelen == 1 && name[0] == CTL_QUERY) 1721 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1722 1723 dp = where = oldp; 1724 buflen = where != NULL ? *oldlenp : 0; 1725 error = needed = 0; 1726 1727 if (newp != NULL || namelen != 3) 1728 return (EINVAL); 1729 pid = name[0]; 1730 elem_size = name[1]; 1731 elem_count = name[2]; 1732 1733 sysctl_unlock(); 1734 if (pid == -1) { 1735 mutex_enter(proc_lock); 1736 PROCLIST_FOREACH(p, &allproc) { 1737 /* Grab a hold on the process. */ 1738 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1739 continue; 1740 } 1741 mutex_exit(proc_lock); 1742 1743 mutex_enter(p->p_lock); 1744 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1745 if (buflen >= elem_size && elem_count > 0) { 1746 lwp_lock(l2); 1747 fill_lwp(l2, &klwp); 1748 lwp_unlock(l2); 1749 mutex_exit(p->p_lock); 1750 1751 /* 1752 * Copy out elem_size, but not 1753 * larger than the size of a 1754 * struct kinfo_proc2. 1755 */ 1756 error = dcopyout(l, &klwp, dp, 1757 min(sizeof(klwp), elem_size)); 1758 if (error) { 1759 rw_exit(&p->p_reflock); 1760 goto cleanup; 1761 } 1762 mutex_enter(p->p_lock); 1763 LIST_FOREACH(l3, &p->p_lwps, 1764 l_sibling) { 1765 if (l2 == l3) 1766 break; 1767 } 1768 if (l3 == NULL) { 1769 mutex_exit(p->p_lock); 1770 rw_exit(&p->p_reflock); 1771 error = EAGAIN; 1772 goto cleanup; 1773 } 1774 dp += elem_size; 1775 buflen -= elem_size; 1776 elem_count--; 1777 } 1778 needed += elem_size; 1779 } 1780 mutex_exit(p->p_lock); 1781 1782 /* Drop reference to process. */ 1783 mutex_enter(proc_lock); 1784 rw_exit(&p->p_reflock); 1785 } 1786 mutex_exit(proc_lock); 1787 } else { 1788 mutex_enter(proc_lock); 1789 p = p_find(pid, PFIND_LOCKED); 1790 if (p == NULL) { 1791 error = ESRCH; 1792 mutex_exit(proc_lock); 1793 goto cleanup; 1794 } 1795 /* Grab a hold on the process. */ 1796 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1797 mutex_exit(proc_lock); 1798 if (!gotit) { 1799 error = ESRCH; 1800 goto cleanup; 1801 } 1802 1803 mutex_enter(p->p_lock); 1804 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1805 if (buflen >= elem_size && elem_count > 0) { 1806 lwp_lock(l2); 1807 fill_lwp(l2, &klwp); 1808 lwp_unlock(l2); 1809 mutex_exit(p->p_lock); 1810 /* 1811 * Copy out elem_size, but not larger than 1812 * the size of a struct kinfo_proc2. 1813 */ 1814 error = dcopyout(l, &klwp, dp, 1815 min(sizeof(klwp), elem_size)); 1816 if (error) { 1817 rw_exit(&p->p_reflock); 1818 goto cleanup; 1819 } 1820 mutex_enter(p->p_lock); 1821 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1822 if (l2 == l3) 1823 break; 1824 } 1825 if (l3 == NULL) { 1826 mutex_exit(p->p_lock); 1827 rw_exit(&p->p_reflock); 1828 error = EAGAIN; 1829 goto cleanup; 1830 } 1831 dp += elem_size; 1832 buflen -= elem_size; 1833 elem_count--; 1834 } 1835 needed += elem_size; 1836 } 1837 mutex_exit(p->p_lock); 1838 1839 /* Drop reference to process. */ 1840 rw_exit(&p->p_reflock); 1841 } 1842 1843 if (where != NULL) { 1844 *oldlenp = dp - where; 1845 if (needed > *oldlenp) { 1846 sysctl_relock(); 1847 return (ENOMEM); 1848 } 1849 } else { 1850 needed += KERN_LWPSLOP; 1851 *oldlenp = needed; 1852 } 1853 error = 0; 1854 cleanup: 1855 sysctl_relock(); 1856 return (error); 1857 } 1858 1859 /* 1860 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1861 * given value is not too large or two small, and is at least one 1862 * timer tick if not zero. 1863 */ 1864 static int 1865 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1866 { 1867 /* userland sees value in ms, internally is in ticks */ 1868 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1869 int error, timo, lsleep; 1870 struct sysctlnode node; 1871 1872 lsleep = forkfsleep * 1000 / hz; 1873 node = *rnode; 1874 node.sysctl_data = &lsleep; 1875 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1876 if (error || newp == NULL) 1877 return (error); 1878 1879 /* refuse negative values, and overly 'long time' */ 1880 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1881 return (EINVAL); 1882 1883 timo = mstohz(lsleep); 1884 1885 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1886 if (lsleep != 0 && timo == 0) 1887 forkfsleep = 1; 1888 else 1889 forkfsleep = timo; 1890 1891 return (0); 1892 } 1893 1894 /* 1895 * sysctl helper routine for kern.root_partition 1896 */ 1897 static int 1898 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1899 { 1900 int rootpart = DISKPART(rootdev); 1901 struct sysctlnode node = *rnode; 1902 1903 node.sysctl_data = &rootpart; 1904 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1905 } 1906 1907 /* 1908 * sysctl helper function for kern.drivers 1909 */ 1910 static int 1911 sysctl_kern_drivers(SYSCTLFN_ARGS) 1912 { 1913 int error; 1914 size_t buflen; 1915 struct kinfo_drivers kd; 1916 char *start, *where; 1917 const char *dname; 1918 int i; 1919 extern struct devsw_conv *devsw_conv; 1920 extern int max_devsw_convs; 1921 1922 if (newp != NULL || namelen != 0) 1923 return (EINVAL); 1924 1925 start = where = oldp; 1926 buflen = *oldlenp; 1927 if (where == NULL) { 1928 *oldlenp = max_devsw_convs * sizeof kd; 1929 return 0; 1930 } 1931 1932 /* 1933 * An array of kinfo_drivers structures 1934 */ 1935 error = 0; 1936 sysctl_unlock(); 1937 mutex_enter(&device_lock); 1938 for (i = 0; i < max_devsw_convs; i++) { 1939 dname = devsw_conv[i].d_name; 1940 if (dname == NULL) 1941 continue; 1942 if (buflen < sizeof kd) { 1943 error = ENOMEM; 1944 break; 1945 } 1946 memset(&kd, 0, sizeof(kd)); 1947 kd.d_bmajor = devsw_conv[i].d_bmajor; 1948 kd.d_cmajor = devsw_conv[i].d_cmajor; 1949 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1950 mutex_exit(&device_lock); 1951 error = dcopyout(l, &kd, where, sizeof kd); 1952 mutex_enter(&device_lock); 1953 if (error != 0) 1954 break; 1955 buflen -= sizeof kd; 1956 where += sizeof kd; 1957 } 1958 mutex_exit(&device_lock); 1959 sysctl_relock(); 1960 *oldlenp = where - start; 1961 return error; 1962 } 1963 1964 /* 1965 * sysctl helper function for kern.file2 1966 */ 1967 static int 1968 sysctl_kern_file2(SYSCTLFN_ARGS) 1969 { 1970 struct proc *p; 1971 struct file *fp, *tp, *np; 1972 struct filedesc *fd; 1973 struct kinfo_file kf; 1974 char *dp; 1975 u_int i, op; 1976 size_t len, needed, elem_size, out_size; 1977 int error, arg, elem_count; 1978 fdfile_t *ff; 1979 fdtab_t *dt; 1980 1981 if (namelen == 1 && name[0] == CTL_QUERY) 1982 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1983 1984 if (namelen != 4) 1985 return (EINVAL); 1986 1987 error = 0; 1988 dp = oldp; 1989 len = (oldp != NULL) ? *oldlenp : 0; 1990 op = name[0]; 1991 arg = name[1]; 1992 elem_size = name[2]; 1993 elem_count = name[3]; 1994 out_size = MIN(sizeof(kf), elem_size); 1995 needed = 0; 1996 1997 if (elem_size < 1 || elem_count < 0) 1998 return (EINVAL); 1999 2000 switch (op) { 2001 case KERN_FILE_BYFILE: 2002 /* 2003 * doesn't use arg so it must be zero 2004 */ 2005 if (arg != 0) 2006 return (EINVAL); 2007 sysctl_unlock(); 2008 /* 2009 * allocate dummy file descriptor to make position in list 2010 */ 2011 if ((tp = fgetdummy()) == NULL) { 2012 sysctl_relock(); 2013 return ENOMEM; 2014 } 2015 mutex_enter(&filelist_lock); 2016 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 2017 np = LIST_NEXT(fp, f_list); 2018 mutex_enter(&fp->f_lock); 2019 if (fp->f_count == 0) { 2020 mutex_exit(&fp->f_lock); 2021 continue; 2022 } 2023 /* 2024 * XXX Need to prevent that from being an alternative 2025 * XXX way for getting process information. 2026 */ 2027 if (kauth_authorize_generic(l->l_cred, 2028 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 2029 mutex_exit(&fp->f_lock); 2030 continue; 2031 } 2032 if (len >= elem_size && elem_count > 0) { 2033 fill_file(&kf, fp, NULL, 0, 0); 2034 LIST_INSERT_AFTER(fp, tp, f_list); 2035 mutex_exit(&fp->f_lock); 2036 mutex_exit(&filelist_lock); 2037 error = dcopyout(l, &kf, dp, out_size); 2038 mutex_enter(&filelist_lock); 2039 np = LIST_NEXT(tp, f_list); 2040 LIST_REMOVE(tp, f_list); 2041 if (error) { 2042 break; 2043 } 2044 dp += elem_size; 2045 len -= elem_size; 2046 } else { 2047 mutex_exit(&fp->f_lock); 2048 } 2049 needed += elem_size; 2050 if (elem_count > 0 && elem_count != INT_MAX) 2051 elem_count--; 2052 } 2053 mutex_exit(&filelist_lock); 2054 fputdummy(tp); 2055 sysctl_relock(); 2056 break; 2057 case KERN_FILE_BYPID: 2058 if (arg < -1) 2059 /* -1 means all processes */ 2060 return (EINVAL); 2061 sysctl_unlock(); 2062 mutex_enter(proc_lock); 2063 PROCLIST_FOREACH(p, &allproc) { 2064 if (p->p_stat == SIDL) { 2065 /* skip embryonic processes */ 2066 continue; 2067 } 2068 if (arg > 0 && p->p_pid != arg) { 2069 /* pick only the one we want */ 2070 /* XXX want 0 to mean "kernel files" */ 2071 continue; 2072 } 2073 mutex_enter(p->p_lock); 2074 error = kauth_authorize_process(l->l_cred, 2075 KAUTH_PROCESS_CANSEE, p, 2076 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_OPENFILES), 2077 NULL, NULL); 2078 mutex_exit(p->p_lock); 2079 if (error != 0) { 2080 /* 2081 * Don't leak kauth retval if we're silently 2082 * skipping this entry. 2083 */ 2084 error = 0; 2085 continue; 2086 } 2087 2088 /* 2089 * Grab a hold on the process. 2090 */ 2091 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 2092 continue; 2093 } 2094 mutex_exit(proc_lock); 2095 2096 /* XXX Do we need to check permission per file? */ 2097 fd = p->p_fd; 2098 mutex_enter(&fd->fd_lock); 2099 dt = fd->fd_dt; 2100 for (i = 0; i < dt->dt_nfiles; i++) { 2101 if ((ff = dt->dt_ff[i]) == NULL) { 2102 continue; 2103 } 2104 if ((fp = ff->ff_file) == NULL) { 2105 continue; 2106 } 2107 if (len >= elem_size && elem_count > 0) { 2108 mutex_enter(&fp->f_lock); 2109 fill_file(&kf, fp, ff, i, p->p_pid); 2110 mutex_exit(&fp->f_lock); 2111 mutex_exit(&fd->fd_lock); 2112 error = dcopyout(l, &kf, dp, out_size); 2113 mutex_enter(&fd->fd_lock); 2114 if (error) 2115 break; 2116 dp += elem_size; 2117 len -= elem_size; 2118 } 2119 needed += elem_size; 2120 if (elem_count > 0 && elem_count != INT_MAX) 2121 elem_count--; 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 = 0; 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 union { 2189 struct kinfo_proc kproc; 2190 struct kinfo_proc2 kproc2; 2191 } *kbuf; 2192 struct proc *p, *next, *marker; 2193 char *where, *dp; 2194 int type, op, arg, error; 2195 u_int elem_size, kelem_size, elem_count; 2196 size_t buflen, needed; 2197 bool match, zombie, mmmbrains; 2198 2199 if (namelen == 1 && name[0] == CTL_QUERY) 2200 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2201 2202 dp = 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_count = 0; /* Ditto */ 2217 kelem_size = elem_size = sizeof(kbuf->kproc); 2218 } else { 2219 if (namelen != 4) 2220 return (EINVAL); 2221 op = name[0]; 2222 arg = name[1]; 2223 elem_size = name[2]; 2224 elem_count = name[3]; 2225 kelem_size = sizeof(kbuf->kproc2); 2226 } 2227 2228 sysctl_unlock(); 2229 2230 kbuf = kmem_alloc(sizeof(*kbuf), KM_SLEEP); 2231 marker = kmem_alloc(sizeof(*marker), KM_SLEEP); 2232 marker->p_flag = PK_MARKER; 2233 2234 mutex_enter(proc_lock); 2235 mmmbrains = false; 2236 for (p = LIST_FIRST(&allproc);; p = next) { 2237 if (p == NULL) { 2238 if (!mmmbrains) { 2239 p = LIST_FIRST(&zombproc); 2240 mmmbrains = true; 2241 } 2242 if (p == NULL) 2243 break; 2244 } 2245 next = LIST_NEXT(p, p_list); 2246 if ((p->p_flag & PK_MARKER) != 0) 2247 continue; 2248 2249 /* 2250 * Skip embryonic processes. 2251 */ 2252 if (p->p_stat == SIDL) 2253 continue; 2254 2255 mutex_enter(p->p_lock); 2256 error = kauth_authorize_process(l->l_cred, 2257 KAUTH_PROCESS_CANSEE, p, 2258 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENTRY), NULL, NULL); 2259 if (error != 0) { 2260 mutex_exit(p->p_lock); 2261 continue; 2262 } 2263 2264 /* 2265 * TODO - make more efficient (see notes below). 2266 * do by session. 2267 */ 2268 switch (op) { 2269 case KERN_PROC_PID: 2270 /* could do this with just a lookup */ 2271 match = (p->p_pid == (pid_t)arg); 2272 break; 2273 2274 case KERN_PROC_PGRP: 2275 /* could do this by traversing pgrp */ 2276 match = (p->p_pgrp->pg_id == (pid_t)arg); 2277 break; 2278 2279 case KERN_PROC_SESSION: 2280 match = (p->p_session->s_sid == (pid_t)arg); 2281 break; 2282 2283 case KERN_PROC_TTY: 2284 match = true; 2285 if (arg == (int) KERN_PROC_TTY_REVOKE) { 2286 if ((p->p_lflag & PL_CONTROLT) == 0 || 2287 p->p_session->s_ttyp == NULL || 2288 p->p_session->s_ttyvp != NULL) { 2289 match = false; 2290 } 2291 } else if ((p->p_lflag & PL_CONTROLT) == 0 || 2292 p->p_session->s_ttyp == NULL) { 2293 if ((dev_t)arg != KERN_PROC_TTY_NODEV) { 2294 match = false; 2295 } 2296 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) { 2297 match = false; 2298 } 2299 break; 2300 2301 case KERN_PROC_UID: 2302 match = (kauth_cred_geteuid(p->p_cred) == (uid_t)arg); 2303 break; 2304 2305 case KERN_PROC_RUID: 2306 match = (kauth_cred_getuid(p->p_cred) == (uid_t)arg); 2307 break; 2308 2309 case KERN_PROC_GID: 2310 match = (kauth_cred_getegid(p->p_cred) == (uid_t)arg); 2311 break; 2312 2313 case KERN_PROC_RGID: 2314 match = (kauth_cred_getgid(p->p_cred) == (uid_t)arg); 2315 break; 2316 2317 case KERN_PROC_ALL: 2318 match = true; 2319 /* allow everything */ 2320 break; 2321 2322 default: 2323 error = EINVAL; 2324 mutex_exit(p->p_lock); 2325 goto cleanup; 2326 } 2327 if (!match) { 2328 mutex_exit(p->p_lock); 2329 continue; 2330 } 2331 2332 /* 2333 * Grab a hold on the process. 2334 */ 2335 if (mmmbrains) { 2336 zombie = true; 2337 } else { 2338 zombie = !rw_tryenter(&p->p_reflock, RW_READER); 2339 } 2340 if (zombie) { 2341 LIST_INSERT_AFTER(p, marker, p_list); 2342 } 2343 2344 if (buflen >= elem_size && 2345 (type == KERN_PROC || elem_count > 0)) { 2346 if (type == KERN_PROC) { 2347 kbuf->kproc.kp_proc = *p; 2348 fill_eproc(p, &kbuf->kproc.kp_eproc, zombie); 2349 } else { 2350 fill_kproc2(p, &kbuf->kproc2, zombie); 2351 elem_count--; 2352 } 2353 mutex_exit(p->p_lock); 2354 mutex_exit(proc_lock); 2355 /* 2356 * Copy out elem_size, but not larger than kelem_size 2357 */ 2358 error = dcopyout(l, kbuf, dp, 2359 min(kelem_size, elem_size)); 2360 mutex_enter(proc_lock); 2361 if (error) { 2362 goto bah; 2363 } 2364 dp += elem_size; 2365 buflen -= elem_size; 2366 } else { 2367 mutex_exit(p->p_lock); 2368 } 2369 needed += elem_size; 2370 2371 /* 2372 * Release reference to process. 2373 */ 2374 if (zombie) { 2375 next = LIST_NEXT(marker, p_list); 2376 LIST_REMOVE(marker, p_list); 2377 } else { 2378 rw_exit(&p->p_reflock); 2379 } 2380 } 2381 mutex_exit(proc_lock); 2382 2383 if (where != NULL) { 2384 *oldlenp = dp - where; 2385 if (needed > *oldlenp) { 2386 error = ENOMEM; 2387 goto out; 2388 } 2389 } else { 2390 needed += KERN_PROCSLOP; 2391 *oldlenp = needed; 2392 } 2393 if (kbuf) 2394 kmem_free(kbuf, sizeof(*kbuf)); 2395 if (marker) 2396 kmem_free(marker, sizeof(*marker)); 2397 sysctl_relock(); 2398 return 0; 2399 bah: 2400 if (zombie) 2401 LIST_REMOVE(marker, p_list); 2402 else 2403 rw_exit(&p->p_reflock); 2404 cleanup: 2405 mutex_exit(proc_lock); 2406 out: 2407 if (kbuf) 2408 kmem_free(kbuf, sizeof(*kbuf)); 2409 if (marker) 2410 kmem_free(marker, sizeof(*marker)); 2411 sysctl_relock(); 2412 return error; 2413 } 2414 2415 /* 2416 * sysctl helper routine for kern.proc_args pseudo-subtree. 2417 */ 2418 static int 2419 sysctl_kern_proc_args(SYSCTLFN_ARGS) 2420 { 2421 struct ps_strings pss; 2422 struct proc *p; 2423 size_t len, i; 2424 struct uio auio; 2425 struct iovec aiov; 2426 pid_t pid; 2427 int nargv, type, error, argvlen; 2428 char *arg; 2429 char **argv = NULL; 2430 char *tmp; 2431 struct vmspace *vmspace; 2432 vaddr_t psstr_addr; 2433 vaddr_t offsetn; 2434 vaddr_t offsetv; 2435 2436 if (namelen == 1 && name[0] == CTL_QUERY) 2437 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2438 2439 if (newp != NULL || namelen != 2) 2440 return (EINVAL); 2441 pid = name[0]; 2442 type = name[1]; 2443 argv = NULL; 2444 argvlen = 0; 2445 2446 switch (type) { 2447 case KERN_PROC_ARGV: 2448 case KERN_PROC_NARGV: 2449 case KERN_PROC_ENV: 2450 case KERN_PROC_NENV: 2451 /* ok */ 2452 break; 2453 default: 2454 return (EINVAL); 2455 } 2456 2457 sysctl_unlock(); 2458 2459 /* check pid */ 2460 mutex_enter(proc_lock); 2461 if ((p = p_find(pid, PFIND_LOCKED)) == NULL) { 2462 error = EINVAL; 2463 goto out_locked; 2464 } 2465 mutex_enter(p->p_lock); 2466 2467 /* Check permission. */ 2468 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 2469 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2470 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ARGS), NULL, NULL); 2471 else if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) 2472 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2473 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENV), NULL, NULL); 2474 else 2475 error = EINVAL; /* XXXGCC */ 2476 if (error) { 2477 mutex_exit(p->p_lock); 2478 goto out_locked; 2479 } 2480 2481 if (oldp == NULL) { 2482 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 2483 *oldlenp = sizeof (int); 2484 else 2485 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 2486 error = 0; 2487 mutex_exit(p->p_lock); 2488 goto out_locked; 2489 } 2490 2491 /* 2492 * Zombies don't have a stack, so we can't read their psstrings. 2493 * System processes also don't have a user stack. 2494 */ 2495 if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) { 2496 error = EINVAL; 2497 mutex_exit(p->p_lock); 2498 goto out_locked; 2499 } 2500 2501 /* 2502 * Lock the process down in memory. 2503 */ 2504 psstr_addr = (vaddr_t)p->p_psstr; 2505 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) { 2506 offsetn = p->p_psnargv; 2507 offsetv = p->p_psargv; 2508 } else { 2509 offsetn = p->p_psnenv; 2510 offsetv = p->p_psenv; 2511 } 2512 vmspace = p->p_vmspace; 2513 uvmspace_addref(vmspace); 2514 mutex_exit(p->p_lock); 2515 mutex_exit(proc_lock); 2516 2517 /* 2518 * Allocate a temporary buffer to hold the arguments. 2519 */ 2520 arg = kmem_alloc(PAGE_SIZE, KM_SLEEP); 2521 2522 /* 2523 * Read in the ps_strings structure. 2524 */ 2525 aiov.iov_base = &pss; 2526 aiov.iov_len = sizeof(pss); 2527 auio.uio_iov = &aiov; 2528 auio.uio_iovcnt = 1; 2529 auio.uio_offset = psstr_addr; 2530 auio.uio_resid = sizeof(pss); 2531 auio.uio_rw = UIO_READ; 2532 UIO_SETUP_SYSSPACE(&auio); 2533 error = uvm_io(&vmspace->vm_map, &auio); 2534 if (error) 2535 goto done; 2536 2537 memcpy(&nargv, (char *)&pss + offsetn, sizeof(nargv)); 2538 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 2539 error = dcopyout(l, &nargv, oldp, sizeof(nargv)); 2540 *oldlenp = sizeof(nargv); 2541 goto done; 2542 } 2543 /* 2544 * Now read the address of the argument vector. 2545 */ 2546 switch (type) { 2547 case KERN_PROC_ARGV: 2548 /* FALLTHROUGH */ 2549 case KERN_PROC_ENV: 2550 memcpy(&tmp, (char *)&pss + offsetv, sizeof(tmp)); 2551 break; 2552 default: 2553 error = EINVAL; 2554 goto done; 2555 } 2556 2557 #ifdef COMPAT_NETBSD32 2558 if (p->p_flag & PK_32) 2559 len = sizeof(netbsd32_charp) * nargv; 2560 else 2561 #endif 2562 len = sizeof(char *) * nargv; 2563 2564 if ((argvlen = len) != 0) 2565 argv = kmem_alloc(len, KM_SLEEP); 2566 2567 aiov.iov_base = argv; 2568 aiov.iov_len = len; 2569 auio.uio_iov = &aiov; 2570 auio.uio_iovcnt = 1; 2571 auio.uio_offset = (off_t)(unsigned long)tmp; 2572 auio.uio_resid = len; 2573 auio.uio_rw = UIO_READ; 2574 UIO_SETUP_SYSSPACE(&auio); 2575 error = uvm_io(&vmspace->vm_map, &auio); 2576 if (error) 2577 goto done; 2578 2579 /* 2580 * Now copy each string. 2581 */ 2582 len = 0; /* bytes written to user buffer */ 2583 for (i = 0; i < nargv; i++) { 2584 int finished = 0; 2585 vaddr_t base; 2586 size_t xlen; 2587 int j; 2588 2589 #ifdef COMPAT_NETBSD32 2590 if (p->p_flag & PK_32) { 2591 netbsd32_charp *argv32; 2592 2593 argv32 = (netbsd32_charp *)argv; 2594 base = (vaddr_t)NETBSD32PTR64(argv32[i]); 2595 } else 2596 #endif 2597 base = (vaddr_t)argv[i]; 2598 2599 /* 2600 * The program has messed around with its arguments, 2601 * possibly deleting some, and replacing them with 2602 * NULL's. Treat this as the last argument and not 2603 * a failure. 2604 */ 2605 if (base == 0) 2606 break; 2607 2608 while (!finished) { 2609 xlen = PAGE_SIZE - (base & PAGE_MASK); 2610 2611 aiov.iov_base = arg; 2612 aiov.iov_len = PAGE_SIZE; 2613 auio.uio_iov = &aiov; 2614 auio.uio_iovcnt = 1; 2615 auio.uio_offset = base; 2616 auio.uio_resid = xlen; 2617 auio.uio_rw = UIO_READ; 2618 UIO_SETUP_SYSSPACE(&auio); 2619 error = uvm_io(&vmspace->vm_map, &auio); 2620 if (error) 2621 goto done; 2622 2623 /* Look for the end of the string */ 2624 for (j = 0; j < xlen; j++) { 2625 if (arg[j] == '\0') { 2626 xlen = j + 1; 2627 finished = 1; 2628 break; 2629 } 2630 } 2631 2632 /* Check for user buffer overflow */ 2633 if (len + xlen > *oldlenp) { 2634 finished = 1; 2635 if (len > *oldlenp) 2636 xlen = 0; 2637 else 2638 xlen = *oldlenp - len; 2639 } 2640 2641 /* Copyout the page */ 2642 error = dcopyout(l, arg, (char *)oldp + len, xlen); 2643 if (error) 2644 goto done; 2645 2646 len += xlen; 2647 base += xlen; 2648 } 2649 } 2650 *oldlenp = len; 2651 2652 done: 2653 if (argvlen != 0) 2654 kmem_free(argv, argvlen); 2655 uvmspace_free(vmspace); 2656 kmem_free(arg, PAGE_SIZE); 2657 sysctl_relock(); 2658 return error; 2659 2660 out_locked: 2661 mutex_exit(proc_lock); 2662 sysctl_relock(); 2663 return error; 2664 } 2665 2666 static int 2667 sysctl_security_setidcore(SYSCTLFN_ARGS) 2668 { 2669 int newsize, error; 2670 struct sysctlnode node; 2671 2672 node = *rnode; 2673 node.sysctl_data = &newsize; 2674 newsize = *(int *)rnode->sysctl_data; 2675 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2676 if (error || newp == NULL) 2677 return error; 2678 2679 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2680 0, NULL, NULL, NULL)) 2681 return (EPERM); 2682 2683 *(int *)rnode->sysctl_data = newsize; 2684 2685 return 0; 2686 } 2687 2688 static int 2689 sysctl_security_setidcorename(SYSCTLFN_ARGS) 2690 { 2691 int error; 2692 char *newsetidcorename; 2693 struct sysctlnode node; 2694 2695 newsetidcorename = PNBUF_GET(); 2696 node = *rnode; 2697 node.sysctl_data = newsetidcorename; 2698 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 2699 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2700 if (error || newp == NULL) { 2701 goto out; 2702 } 2703 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2704 0, NULL, NULL, NULL)) { 2705 error = EPERM; 2706 goto out; 2707 } 2708 if (strlen(newsetidcorename) == 0) { 2709 error = EINVAL; 2710 goto out; 2711 } 2712 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 2713 out: 2714 PNBUF_PUT(newsetidcorename); 2715 return error; 2716 } 2717 2718 /* 2719 * sysctl helper routine for kern.cp_id node. Maps cpus to their 2720 * cpuids. 2721 */ 2722 static int 2723 sysctl_kern_cpid(SYSCTLFN_ARGS) 2724 { 2725 struct sysctlnode node = *rnode; 2726 uint64_t *cp_id = NULL; 2727 int error, n = ncpu; 2728 struct cpu_info *ci; 2729 CPU_INFO_ITERATOR cii; 2730 2731 /* 2732 * Here you may either retrieve a single cpu id or the whole 2733 * set. The size you get back when probing depends on what 2734 * you ask for. 2735 */ 2736 switch (namelen) { 2737 case 0: 2738 node.sysctl_size = n * sizeof(uint64_t); 2739 n = -2; /* ALL */ 2740 break; 2741 case 1: 2742 if (name[0] < 0 || name[0] >= n) 2743 return (ENOENT); /* ENOSUCHPROCESSOR */ 2744 node.sysctl_size = sizeof(uint64_t); 2745 n = name[0]; 2746 /* 2747 * adjust these so that sysctl_lookup() will be happy 2748 */ 2749 name++; 2750 namelen--; 2751 break; 2752 default: 2753 return (EINVAL); 2754 } 2755 2756 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 2757 if (cp_id == NULL) 2758 return (ENOMEM); 2759 node.sysctl_data = cp_id; 2760 memset(cp_id, 0, node.sysctl_size); 2761 2762 for (CPU_INFO_FOREACH(cii, ci)) { 2763 if (n <= 0) 2764 cp_id[0] = cpu_index(ci); 2765 /* 2766 * if a specific processor was requested and we just 2767 * did it, we're done here 2768 */ 2769 if (n == 0) 2770 break; 2771 /* 2772 * if doing "all", skip to next cp_id slot for next processor 2773 */ 2774 if (n == -2) 2775 cp_id++; 2776 /* 2777 * if we're doing a specific processor, we're one 2778 * processor closer 2779 */ 2780 if (n > 0) 2781 n--; 2782 } 2783 2784 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2785 kmem_free(node.sysctl_data, node.sysctl_size); 2786 return (error); 2787 } 2788 2789 /* 2790 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 2791 * calculate on the fly taking into account integer overflow and the 2792 * current wired count. 2793 */ 2794 static int 2795 sysctl_hw_usermem(SYSCTLFN_ARGS) 2796 { 2797 u_int ui; 2798 u_quad_t uq; 2799 struct sysctlnode node; 2800 2801 node = *rnode; 2802 switch (rnode->sysctl_num) { 2803 case HW_USERMEM: 2804 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 2805 ui = UINT_MAX; 2806 else 2807 ui *= PAGE_SIZE; 2808 node.sysctl_data = &ui; 2809 break; 2810 case HW_USERMEM64: 2811 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2812 node.sysctl_data = &uq; 2813 break; 2814 default: 2815 return (EINVAL); 2816 } 2817 2818 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2819 } 2820 2821 /* 2822 * sysctl helper routine for kern.cnmagic node. Pulls the old value 2823 * out, encoded, and stuffs the new value in for decoding. 2824 */ 2825 static int 2826 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2827 { 2828 char magic[CNS_LEN]; 2829 int error; 2830 struct sysctlnode node; 2831 2832 if (oldp) 2833 cn_get_magic(magic, CNS_LEN); 2834 node = *rnode; 2835 node.sysctl_data = &magic[0]; 2836 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2837 if (error || newp == NULL) 2838 return (error); 2839 2840 return (cn_set_magic(magic)); 2841 } 2842 2843 /* 2844 * ******************************************************************** 2845 * section 3: public helper routines that are used for more than one 2846 * node 2847 * ******************************************************************** 2848 */ 2849 2850 /* 2851 * sysctl helper routine for the kern.root_device node and some ports' 2852 * machdep.root_device nodes. 2853 */ 2854 int 2855 sysctl_root_device(SYSCTLFN_ARGS) 2856 { 2857 struct sysctlnode node; 2858 2859 node = *rnode; 2860 node.sysctl_data = root_device->dv_xname; 2861 node.sysctl_size = strlen(device_xname(root_device)) + 1; 2862 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2863 } 2864 2865 /* 2866 * sysctl helper routine for kern.consdev, dependent on the current 2867 * state of the console. Also used for machdep.console_device on some 2868 * ports. 2869 */ 2870 int 2871 sysctl_consdev(SYSCTLFN_ARGS) 2872 { 2873 dev_t consdev; 2874 uint32_t oconsdev; 2875 struct sysctlnode node; 2876 2877 if (cn_tab != NULL) 2878 consdev = cn_tab->cn_dev; 2879 else 2880 consdev = NODEV; 2881 node = *rnode; 2882 switch (*oldlenp) { 2883 case sizeof(consdev): 2884 node.sysctl_data = &consdev; 2885 node.sysctl_size = sizeof(consdev); 2886 break; 2887 case sizeof(oconsdev): 2888 oconsdev = (uint32_t)consdev; 2889 node.sysctl_data = &oconsdev; 2890 node.sysctl_size = sizeof(oconsdev); 2891 break; 2892 default: 2893 return EINVAL; 2894 } 2895 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2896 } 2897 2898 /* 2899 * ******************************************************************** 2900 * section 4: support for some helpers 2901 * ******************************************************************** 2902 */ 2903 /* 2904 * Find the most ``active'' lwp of a process and return it for ps display 2905 * purposes 2906 */ 2907 static struct lwp * 2908 proc_active_lwp(struct proc *p) 2909 { 2910 static const int ostat[] = { 2911 0, 2912 2, /* LSIDL */ 2913 6, /* LSRUN */ 2914 5, /* LSSLEEP */ 2915 4, /* LSSTOP */ 2916 0, /* LSZOMB */ 2917 1, /* LSDEAD */ 2918 7, /* LSONPROC */ 2919 3 /* LSSUSPENDED */ 2920 }; 2921 2922 struct lwp *l, *lp = NULL; 2923 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 2924 KASSERT(l->l_stat >= 0 && l->l_stat < __arraycount(ostat)); 2925 if (lp == NULL || 2926 ostat[l->l_stat] > ostat[lp->l_stat] || 2927 (ostat[l->l_stat] == ostat[lp->l_stat] && 2928 l->l_cpticks > lp->l_cpticks)) { 2929 lp = l; 2930 continue; 2931 } 2932 } 2933 return lp; 2934 } 2935 2936 2937 /* 2938 * Fill in a kinfo_proc2 structure for the specified process. 2939 */ 2940 static void 2941 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki, bool zombie) 2942 { 2943 struct tty *tp; 2944 struct lwp *l, *l2; 2945 struct timeval ut, st, rt; 2946 sigset_t ss1, ss2; 2947 struct rusage ru; 2948 struct vmspace *vm; 2949 2950 KASSERT(mutex_owned(proc_lock)); 2951 KASSERT(mutex_owned(p->p_lock)); 2952 2953 sigemptyset(&ss1); 2954 sigemptyset(&ss2); 2955 memset(ki, 0, sizeof(*ki)); 2956 2957 ki->p_paddr = PTRTOUINT64(p); 2958 ki->p_fd = PTRTOUINT64(p->p_fd); 2959 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2960 ki->p_stats = PTRTOUINT64(p->p_stats); 2961 ki->p_limit = PTRTOUINT64(p->p_limit); 2962 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2963 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2964 ki->p_sess = PTRTOUINT64(p->p_session); 2965 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2966 ki->p_ru = PTRTOUINT64(&p->p_stats->p_ru); 2967 ki->p_eflag = 0; 2968 ki->p_exitsig = p->p_exitsig; 2969 ki->p_flag = sysctl_map_flags(sysctl_flagmap, p->p_flag); 2970 ki->p_flag |= sysctl_map_flags(sysctl_sflagmap, p->p_sflag); 2971 ki->p_flag |= sysctl_map_flags(sysctl_slflagmap, p->p_slflag); 2972 ki->p_flag |= sysctl_map_flags(sysctl_lflagmap, p->p_lflag); 2973 ki->p_flag |= sysctl_map_flags(sysctl_stflagmap, p->p_stflag); 2974 ki->p_pid = p->p_pid; 2975 if (p->p_pptr) 2976 ki->p_ppid = p->p_pptr->p_pid; 2977 else 2978 ki->p_ppid = 0; 2979 ki->p_uid = kauth_cred_geteuid(p->p_cred); 2980 ki->p_ruid = kauth_cred_getuid(p->p_cred); 2981 ki->p_gid = kauth_cred_getegid(p->p_cred); 2982 ki->p_rgid = kauth_cred_getgid(p->p_cred); 2983 ki->p_svuid = kauth_cred_getsvuid(p->p_cred); 2984 ki->p_svgid = kauth_cred_getsvgid(p->p_cred); 2985 ki->p_ngroups = kauth_cred_ngroups(p->p_cred); 2986 kauth_cred_getgroups(p->p_cred, ki->p_groups, 2987 min(ki->p_ngroups, sizeof(ki->p_groups) / sizeof(ki->p_groups[0])), 2988 UIO_SYSSPACE); 2989 2990 ki->p_uticks = p->p_uticks; 2991 ki->p_sticks = p->p_sticks; 2992 ki->p_iticks = p->p_iticks; 2993 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2994 ki->p_tracep = PTRTOUINT64(p->p_tracep); 2995 ki->p_traceflag = p->p_traceflag; 2996 2997 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2998 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2999 3000 ki->p_cpticks = 0; 3001 ki->p_pctcpu = p->p_pctcpu; 3002 ki->p_estcpu = 0; 3003 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 3004 ki->p_realstat = p->p_stat; 3005 ki->p_nice = p->p_nice; 3006 ki->p_xstat = p->p_xstat; 3007 ki->p_acflag = p->p_acflag; 3008 3009 strncpy(ki->p_comm, p->p_comm, 3010 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 3011 strncpy(ki->p_ename, p->p_emul->e_name, sizeof(ki->p_ename)); 3012 3013 ki->p_nlwps = p->p_nlwps; 3014 ki->p_realflag = ki->p_flag; 3015 3016 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3017 vm = p->p_vmspace; 3018 ki->p_vm_rssize = vm_resident_count(vm); 3019 ki->p_vm_tsize = vm->vm_tsize; 3020 ki->p_vm_dsize = vm->vm_dsize; 3021 ki->p_vm_ssize = vm->vm_ssize; 3022 ki->p_vm_vsize = vm->vm_map.size; 3023 /* 3024 * Since the stack is initially mapped mostly with 3025 * PROT_NONE and grown as needed, adjust the "mapped size" 3026 * to skip the unused stack portion. 3027 */ 3028 ki->p_vm_msize = 3029 atop(vm->vm_map.size) - vm->vm_issize + vm->vm_ssize; 3030 3031 /* Pick the primary (first) LWP */ 3032 l = proc_active_lwp(p); 3033 KASSERT(l != NULL); 3034 lwp_lock(l); 3035 ki->p_nrlwps = p->p_nrlwps; 3036 ki->p_forw = 0; 3037 ki->p_back = 0; 3038 ki->p_addr = PTRTOUINT64(l->l_addr); 3039 ki->p_stat = l->l_stat; 3040 ki->p_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3041 ki->p_swtime = l->l_swtime; 3042 ki->p_slptime = l->l_slptime; 3043 if (l->l_stat == LSONPROC) 3044 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3045 else 3046 ki->p_schedflags = 0; 3047 ki->p_holdcnt = l->l_holdcnt; 3048 ki->p_priority = lwp_eprio(l); 3049 ki->p_usrpri = l->l_priority; 3050 if (l->l_wchan) 3051 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 3052 ki->p_wchan = PTRTOUINT64(l->l_wchan); 3053 ki->p_cpuid = cpu_index(l->l_cpu); 3054 lwp_unlock(l); 3055 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 3056 /* This is hardly correct, but... */ 3057 sigplusset(&l->l_sigpend.sp_set, &ss1); 3058 sigplusset(&l->l_sigmask, &ss2); 3059 ki->p_cpticks += l->l_cpticks; 3060 ki->p_pctcpu += l->l_pctcpu; 3061 ki->p_estcpu += l->l_estcpu; 3062 } 3063 } 3064 sigplusset(&p->p_sigpend.sp_set, &ss2); 3065 memcpy(&ki->p_siglist, &ss1, sizeof(ki_sigset_t)); 3066 memcpy(&ki->p_sigmask, &ss2, sizeof(ki_sigset_t)); 3067 3068 if (p->p_session != NULL) { 3069 ki->p_sid = p->p_session->s_sid; 3070 ki->p__pgid = p->p_pgrp->pg_id; 3071 if (p->p_session->s_ttyvp) 3072 ki->p_eflag |= EPROC_CTTY; 3073 if (SESS_LEADER(p)) 3074 ki->p_eflag |= EPROC_SLEADER; 3075 strncpy(ki->p_login, p->p_session->s_login, 3076 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 3077 ki->p_jobc = p->p_pgrp->pg_jobc; 3078 if ((p->p_lflag & PL_CONTROLT) && (tp = p->p_session->s_ttyp)) { 3079 ki->p_tdev = tp->t_dev; 3080 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3081 ki->p_tsess = PTRTOUINT64(tp->t_session); 3082 } else { 3083 ki->p_tdev = (int32_t)NODEV; 3084 } 3085 } 3086 3087 if (!P_ZOMBIE(p) && !zombie) { 3088 ki->p_uvalid = 1; 3089 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 3090 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 3091 3092 calcru(p, &ut, &st, NULL, &rt); 3093 ki->p_rtime_sec = rt.tv_sec; 3094 ki->p_rtime_usec = rt.tv_usec; 3095 ki->p_uutime_sec = ut.tv_sec; 3096 ki->p_uutime_usec = ut.tv_usec; 3097 ki->p_ustime_sec = st.tv_sec; 3098 ki->p_ustime_usec = st.tv_usec; 3099 3100 memcpy(&ru, &p->p_stats->p_ru, sizeof(ru)); 3101 ki->p_uru_nvcsw = 0; 3102 ki->p_uru_nivcsw = 0; 3103 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 3104 ki->p_uru_nvcsw += (l2->l_ncsw - l2->l_nivcsw); 3105 ki->p_uru_nivcsw += l2->l_nivcsw; 3106 ruadd(&ru, &l2->l_ru); 3107 } 3108 ki->p_uru_maxrss = ru.ru_maxrss; 3109 ki->p_uru_ixrss = ru.ru_ixrss; 3110 ki->p_uru_idrss = ru.ru_idrss; 3111 ki->p_uru_isrss = ru.ru_isrss; 3112 ki->p_uru_minflt = ru.ru_minflt; 3113 ki->p_uru_majflt = ru.ru_majflt; 3114 ki->p_uru_nswap = ru.ru_nswap; 3115 ki->p_uru_inblock = ru.ru_inblock; 3116 ki->p_uru_oublock = ru.ru_oublock; 3117 ki->p_uru_msgsnd = ru.ru_msgsnd; 3118 ki->p_uru_msgrcv = ru.ru_msgrcv; 3119 ki->p_uru_nsignals = ru.ru_nsignals; 3120 3121 timeradd(&p->p_stats->p_cru.ru_utime, 3122 &p->p_stats->p_cru.ru_stime, &ut); 3123 ki->p_uctime_sec = ut.tv_sec; 3124 ki->p_uctime_usec = ut.tv_usec; 3125 } 3126 } 3127 3128 /* 3129 * Fill in a kinfo_lwp structure for the specified lwp. 3130 */ 3131 static void 3132 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 3133 { 3134 struct proc *p = l->l_proc; 3135 struct timeval tv; 3136 3137 KASSERT(lwp_locked(l, NULL)); 3138 3139 kl->l_forw = 0; 3140 kl->l_back = 0; 3141 kl->l_laddr = PTRTOUINT64(l); 3142 kl->l_addr = PTRTOUINT64(l->l_addr); 3143 kl->l_stat = l->l_stat; 3144 kl->l_lid = l->l_lid; 3145 kl->l_flag = sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 3146 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3147 3148 kl->l_swtime = l->l_swtime; 3149 kl->l_slptime = l->l_slptime; 3150 if (l->l_stat == LSONPROC) 3151 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3152 else 3153 kl->l_schedflags = 0; 3154 kl->l_holdcnt = l->l_holdcnt; 3155 kl->l_priority = lwp_eprio(l); 3156 kl->l_usrpri = l->l_priority; 3157 if (l->l_wchan) 3158 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 3159 kl->l_wchan = PTRTOUINT64(l->l_wchan); 3160 kl->l_cpuid = cpu_index(l->l_cpu); 3161 bintime2timeval(&l->l_rtime, &tv); 3162 kl->l_rtime_sec = tv.tv_sec; 3163 kl->l_rtime_usec = tv.tv_usec; 3164 kl->l_cpticks = l->l_cpticks; 3165 kl->l_pctcpu = l->l_pctcpu; 3166 kl->l_pid = p->p_pid; 3167 if (l->l_name == NULL) 3168 kl->l_name[0] = '\0'; 3169 else 3170 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 3171 } 3172 3173 /* 3174 * Fill in an eproc structure for the specified process. 3175 */ 3176 void 3177 fill_eproc(struct proc *p, struct eproc *ep, bool zombie) 3178 { 3179 struct tty *tp; 3180 struct lwp *l; 3181 3182 KASSERT(mutex_owned(proc_lock)); 3183 KASSERT(mutex_owned(p->p_lock)); 3184 3185 memset(ep, 0, sizeof(*ep)); 3186 3187 ep->e_paddr = p; 3188 ep->e_sess = p->p_session; 3189 if (p->p_cred) { 3190 kauth_cred_topcred(p->p_cred, &ep->e_pcred); 3191 kauth_cred_toucred(p->p_cred, &ep->e_ucred); 3192 } 3193 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3194 struct vmspace *vm = p->p_vmspace; 3195 3196 ep->e_vm.vm_rssize = vm_resident_count(vm); 3197 ep->e_vm.vm_tsize = vm->vm_tsize; 3198 ep->e_vm.vm_dsize = vm->vm_dsize; 3199 ep->e_vm.vm_ssize = vm->vm_ssize; 3200 ep->e_vm.vm_map.size = vm->vm_map.size; 3201 3202 /* Pick the primary (first) LWP */ 3203 l = proc_active_lwp(p); 3204 KASSERT(l != NULL); 3205 lwp_lock(l); 3206 if (l->l_wchan) 3207 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 3208 lwp_unlock(l); 3209 } 3210 if (p->p_pptr) 3211 ep->e_ppid = p->p_pptr->p_pid; 3212 if (p->p_pgrp && p->p_session) { 3213 ep->e_pgid = p->p_pgrp->pg_id; 3214 ep->e_jobc = p->p_pgrp->pg_jobc; 3215 ep->e_sid = p->p_session->s_sid; 3216 if ((p->p_lflag & PL_CONTROLT) && 3217 (tp = ep->e_sess->s_ttyp)) { 3218 ep->e_tdev = tp->t_dev; 3219 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3220 ep->e_tsess = tp->t_session; 3221 } else 3222 ep->e_tdev = (uint32_t)NODEV; 3223 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 3224 if (SESS_LEADER(p)) 3225 ep->e_flag |= EPROC_SLEADER; 3226 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 3227 } 3228 ep->e_xsize = ep->e_xrssize = 0; 3229 ep->e_xccount = ep->e_xswrss = 0; 3230 } 3231 3232 u_int 3233 sysctl_map_flags(const u_int *map, u_int word) 3234 { 3235 u_int rv; 3236 3237 for (rv = 0; *map != 0; map += 2) 3238 if ((word & map[0]) != 0) 3239 rv |= map[1]; 3240 3241 return rv; 3242 } 3243
Indexes created Wed Oct 01 15:09:59 GMT 2025