init_sysctl.c revision 1.156
1 /* $NetBSD: init_sysctl.c,v 1.156 2009/02/13 22:41:04 apb Exp $ */ 2 3 /*- 4 * Copyright (c) 2003, 2007, 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Brown, and by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: init_sysctl.c,v 1.156 2009/02/13 22:41:04 apb 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, 450 CTLTYPE_STRUCT, "boottime", 451 SYSCTL_DESCR("System boot time"), 452 NULL, 0, &boottime, sizeof(boottime), 453 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 454 #ifdef COMPAT_50 455 { 456 extern struct timeval50 boottime50; 457 sysctl_createv(clog, 0, NULL, NULL, 458 CTLFLAG_PERMANENT, 459 CTLTYPE_STRUCT, "oboottime", 460 SYSCTL_DESCR("System boot time"), 461 NULL, 0, &boottime50, sizeof(boottime50), 462 CTL_KERN, KERN_OBOOTTIME, CTL_EOL); 463 } 464 #endif 465 sysctl_createv(clog, 0, NULL, NULL, 466 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 467 CTLTYPE_STRING, "domainname", 468 SYSCTL_DESCR("YP domain name"), 469 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 470 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 471 sysctl_createv(clog, 0, NULL, NULL, 472 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 473 CTLTYPE_INT, "maxpartitions", 474 SYSCTL_DESCR("Maximum number of partitions allowed per " 475 "disk"), 476 NULL, MAXPARTITIONS, NULL, 0, 477 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 478 sysctl_createv(clog, 0, NULL, NULL, 479 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 480 CTLTYPE_INT, "rawpartition", 481 SYSCTL_DESCR("Raw partition of a disk"), 482 NULL, RAW_PART, NULL, 0, 483 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 484 sysctl_createv(clog, 0, NULL, NULL, 485 CTLFLAG_PERMANENT, 486 CTLTYPE_STRUCT, "timex", NULL, 487 sysctl_notavail, 0, NULL, 0, 488 CTL_KERN, KERN_TIMEX, CTL_EOL); 489 sysctl_createv(clog, 0, NULL, NULL, 490 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 491 CTLTYPE_INT, "rtc_offset", 492 SYSCTL_DESCR("Offset of real time clock from UTC in " 493 "minutes"), 494 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 495 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 496 sysctl_createv(clog, 0, NULL, NULL, 497 CTLFLAG_PERMANENT, 498 CTLTYPE_STRING, "root_device", 499 SYSCTL_DESCR("Name of the root device"), 500 sysctl_root_device, 0, NULL, 0, 501 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 502 sysctl_createv(clog, 0, NULL, NULL, 503 CTLFLAG_PERMANENT, 504 CTLTYPE_INT, "msgbufsize", 505 SYSCTL_DESCR("Size of the kernel message buffer"), 506 sysctl_msgbuf, 0, NULL, 0, 507 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 508 sysctl_createv(clog, 0, NULL, NULL, 509 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 510 CTLTYPE_INT, "fsync", 511 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 512 "Synchronization Option is available on " 513 "this system"), 514 NULL, 1, NULL, 0, 515 CTL_KERN, KERN_FSYNC, CTL_EOL); 516 sysctl_createv(clog, 0, NULL, NULL, 517 CTLFLAG_PERMANENT, 518 CTLTYPE_NODE, "ipc", 519 SYSCTL_DESCR("SysV IPC options"), 520 NULL, 0, NULL, 0, 521 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 522 sysctl_createv(clog, 0, NULL, NULL, 523 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 524 CTLTYPE_INT, "sysvmsg", 525 SYSCTL_DESCR("System V style message support available"), 526 NULL, 527 #ifdef SYSVMSG 528 1, 529 #else /* SYSVMSG */ 530 0, 531 #endif /* SYSVMSG */ 532 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 533 sysctl_createv(clog, 0, NULL, NULL, 534 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 535 CTLTYPE_INT, "sysvsem", 536 SYSCTL_DESCR("System V style semaphore support " 537 "available"), NULL, 538 #ifdef SYSVSEM 539 1, 540 #else /* SYSVSEM */ 541 0, 542 #endif /* SYSVSEM */ 543 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 544 sysctl_createv(clog, 0, NULL, NULL, 545 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 546 CTLTYPE_INT, "sysvshm", 547 SYSCTL_DESCR("System V style shared memory support " 548 "available"), NULL, 549 #ifdef SYSVSHM 550 1, 551 #else /* SYSVSHM */ 552 0, 553 #endif /* SYSVSHM */ 554 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 555 sysctl_createv(clog, 0, NULL, NULL, 556 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 557 CTLTYPE_INT, "synchronized_io", 558 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 559 "I/O Option is available on this system"), 560 NULL, 1, NULL, 0, 561 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 562 sysctl_createv(clog, 0, NULL, NULL, 563 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 564 CTLTYPE_INT, "iov_max", 565 SYSCTL_DESCR("Maximum number of iovec structures per " 566 "process"), 567 NULL, IOV_MAX, NULL, 0, 568 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 569 sysctl_createv(clog, 0, NULL, NULL, 570 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 571 CTLTYPE_INT, "mapped_files", 572 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 573 "Files Option is available on this system"), 574 NULL, 1, NULL, 0, 575 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 576 sysctl_createv(clog, 0, NULL, NULL, 577 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 578 CTLTYPE_INT, "memlock", 579 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 580 "Locking Option is available on this " 581 "system"), 582 NULL, 1, NULL, 0, 583 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 584 sysctl_createv(clog, 0, NULL, NULL, 585 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 586 CTLTYPE_INT, "memlock_range", 587 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 588 "Locking Option is available on this " 589 "system"), 590 NULL, 1, NULL, 0, 591 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 592 sysctl_createv(clog, 0, NULL, NULL, 593 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 594 CTLTYPE_INT, "memory_protection", 595 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 596 "Protection Option is available on this " 597 "system"), 598 NULL, 1, NULL, 0, 599 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 600 sysctl_createv(clog, 0, NULL, NULL, 601 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 602 CTLTYPE_INT, "login_name_max", 603 SYSCTL_DESCR("Maximum login name length"), 604 NULL, LOGIN_NAME_MAX, NULL, 0, 605 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 606 sysctl_createv(clog, 0, NULL, NULL, 607 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 608 CTLTYPE_STRING, "defcorename", 609 SYSCTL_DESCR("Default core file name"), 610 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 611 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 612 sysctl_createv(clog, 0, NULL, NULL, 613 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 614 CTLTYPE_INT, "logsigexit", 615 SYSCTL_DESCR("Log process exit when caused by signals"), 616 NULL, 0, &kern_logsigexit, 0, 617 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 618 sysctl_createv(clog, 0, NULL, NULL, 619 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 620 CTLTYPE_INT, "fscale", 621 SYSCTL_DESCR("Kernel fixed-point scale factor"), 622 NULL, FSCALE, NULL, 0, 623 CTL_KERN, KERN_FSCALE, CTL_EOL); 624 sysctl_createv(clog, 0, NULL, NULL, 625 CTLFLAG_PERMANENT, 626 CTLTYPE_INT, "ccpu", 627 SYSCTL_DESCR("Scheduler exponential decay value"), 628 NULL, 0, &ccpu, 0, 629 CTL_KERN, KERN_CCPU, CTL_EOL); 630 sysctl_createv(clog, 0, NULL, NULL, 631 CTLFLAG_PERMANENT, 632 CTLTYPE_STRUCT, "cp_time", 633 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 634 sysctl_kern_cptime, 0, NULL, 0, 635 CTL_KERN, KERN_CP_TIME, CTL_EOL); 636 sysctl_createv(clog, 0, NULL, NULL, 637 CTLFLAG_PERMANENT, 638 CTLTYPE_INT, "msgbuf", 639 SYSCTL_DESCR("Kernel message buffer"), 640 sysctl_msgbuf, 0, NULL, 0, 641 CTL_KERN, KERN_MSGBUF, CTL_EOL); 642 sysctl_createv(clog, 0, NULL, NULL, 643 CTLFLAG_PERMANENT, 644 CTLTYPE_STRUCT, "consdev", 645 SYSCTL_DESCR("Console device"), 646 sysctl_consdev, 0, NULL, sizeof(dev_t), 647 CTL_KERN, KERN_CONSDEV, CTL_EOL); 648 #if NPTY > 0 649 sysctl_createv(clog, 0, NULL, NULL, 650 CTLFLAG_PERMANENT, 651 CTLTYPE_INT, "maxptys", 652 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 653 sysctl_kern_maxptys, 0, NULL, 0, 654 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 655 #endif /* NPTY > 0 */ 656 sysctl_createv(clog, 0, NULL, NULL, 657 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 658 CTLTYPE_INT, "maxphys", 659 SYSCTL_DESCR("Maximum raw I/O transfer size"), 660 NULL, MAXPHYS, NULL, 0, 661 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 662 sysctl_createv(clog, 0, NULL, NULL, 663 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 664 CTLTYPE_INT, "sbmax", 665 SYSCTL_DESCR("Maximum socket buffer size"), 666 sysctl_kern_sbmax, 0, NULL, 0, 667 CTL_KERN, KERN_SBMAX, CTL_EOL); 668 sysctl_createv(clog, 0, NULL, NULL, 669 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 670 CTLTYPE_INT, "monotonic_clock", 671 SYSCTL_DESCR("Implementation version of the POSIX " 672 "1003.1b Monotonic Clock Option"), 673 /* XXX _POSIX_VERSION */ 674 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 675 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 676 sysctl_createv(clog, 0, NULL, NULL, 677 CTLFLAG_PERMANENT, 678 CTLTYPE_INT, "urandom", 679 SYSCTL_DESCR("Random integer value"), 680 sysctl_kern_urnd, 0, NULL, 0, 681 CTL_KERN, KERN_URND, CTL_EOL); 682 sysctl_createv(clog, 0, NULL, NULL, 683 CTLFLAG_PERMANENT, 684 CTLTYPE_INT, "arandom", 685 SYSCTL_DESCR("n bytes of random data"), 686 sysctl_kern_arnd, 0, NULL, 0, 687 CTL_KERN, KERN_ARND, CTL_EOL); 688 sysctl_createv(clog, 0, NULL, NULL, 689 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 690 CTLTYPE_INT, "labelsector", 691 SYSCTL_DESCR("Sector number containing the disklabel"), 692 NULL, LABELSECTOR, NULL, 0, 693 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 694 sysctl_createv(clog, 0, NULL, NULL, 695 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 696 CTLTYPE_INT, "labeloffset", 697 SYSCTL_DESCR("Offset of the disklabel within the " 698 "sector"), 699 NULL, LABELOFFSET, NULL, 0, 700 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 701 sysctl_createv(clog, 0, NULL, NULL, 702 CTLFLAG_PERMANENT, 703 CTLTYPE_NODE, "lwp", 704 SYSCTL_DESCR("System-wide LWP information"), 705 sysctl_kern_lwp, 0, NULL, 0, 706 CTL_KERN, KERN_LWP, CTL_EOL); 707 sysctl_createv(clog, 0, NULL, NULL, 708 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 709 CTLTYPE_INT, "forkfsleep", 710 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 711 "to process limits"), 712 sysctl_kern_forkfsleep, 0, NULL, 0, 713 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 714 sysctl_createv(clog, 0, NULL, NULL, 715 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 716 CTLTYPE_INT, "posix_threads", 717 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 718 "Threads option to which the system " 719 "attempts to conform"), 720 /* XXX _POSIX_VERSION */ 721 NULL, _POSIX_THREADS, NULL, 0, 722 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 723 sysctl_createv(clog, 0, NULL, NULL, 724 CTLFLAG_PERMANENT, 725 CTLTYPE_INT, "posix_semaphores", 726 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 727 "Semaphores option to which the system " 728 "attempts to conform"), NULL, 729 0, &posix_semaphores, 730 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 731 sysctl_createv(clog, 0, NULL, NULL, 732 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 733 CTLTYPE_INT, "posix_barriers", 734 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 735 "Barriers option to which the system " 736 "attempts to conform"), 737 /* XXX _POSIX_VERSION */ 738 NULL, _POSIX_BARRIERS, NULL, 0, 739 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 740 sysctl_createv(clog, 0, NULL, NULL, 741 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 742 CTLTYPE_INT, "posix_timers", 743 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 744 "Timers option to which the system " 745 "attempts to conform"), 746 /* XXX _POSIX_VERSION */ 747 NULL, _POSIX_TIMERS, NULL, 0, 748 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 749 sysctl_createv(clog, 0, NULL, NULL, 750 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 751 CTLTYPE_INT, "posix_spin_locks", 752 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 753 "Locks option to which the system attempts " 754 "to conform"), 755 /* XXX _POSIX_VERSION */ 756 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 757 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 758 sysctl_createv(clog, 0, NULL, NULL, 759 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 760 CTLTYPE_INT, "posix_reader_writer_locks", 761 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 762 "Read-Write Locks option to which the " 763 "system attempts to conform"), 764 /* XXX _POSIX_VERSION */ 765 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 766 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 767 sysctl_createv(clog, 0, NULL, NULL, 768 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 769 CTLTYPE_INT, "dump_on_panic", 770 SYSCTL_DESCR("Perform a crash dump on system panic"), 771 NULL, 0, &dumponpanic, 0, 772 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 773 #ifdef DIAGNOSTIC 774 sysctl_createv(clog, 0, NULL, NULL, 775 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 776 CTLTYPE_INT, "panic_now", 777 SYSCTL_DESCR("Trigger a panic"), 778 sysctl_kern_trigger_panic, 0, NULL, 0, 779 CTL_KERN, CTL_CREATE, CTL_EOL); 780 #endif 781 sysctl_createv(clog, 0, NULL, NULL, 782 CTLFLAG_PERMANENT, 783 CTLTYPE_INT, "root_partition", 784 SYSCTL_DESCR("Root partition on the root device"), 785 sysctl_kern_root_partition, 0, NULL, 0, 786 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 787 sysctl_createv(clog, 0, NULL, NULL, 788 CTLFLAG_PERMANENT, 789 CTLTYPE_STRUCT, "drivers", 790 SYSCTL_DESCR("List of all drivers with block and " 791 "character device numbers"), 792 sysctl_kern_drivers, 0, NULL, 0, 793 CTL_KERN, KERN_DRIVERS, CTL_EOL); 794 sysctl_createv(clog, 0, NULL, NULL, 795 CTLFLAG_PERMANENT, 796 CTLTYPE_STRUCT, "file2", 797 SYSCTL_DESCR("System open file table"), 798 sysctl_kern_file2, 0, NULL, 0, 799 CTL_KERN, KERN_FILE2, CTL_EOL); 800 sysctl_createv(clog, 0, NULL, NULL, 801 CTLFLAG_PERMANENT, 802 CTLTYPE_STRUCT, "cp_id", 803 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 804 sysctl_kern_cpid, 0, NULL, 0, 805 CTL_KERN, KERN_CP_ID, CTL_EOL); 806 sysctl_createv(clog, 0, NULL, &rnode, 807 CTLFLAG_PERMANENT, 808 CTLTYPE_NODE, "coredump", 809 SYSCTL_DESCR("Coredump settings."), 810 NULL, 0, NULL, 0, 811 CTL_KERN, CTL_CREATE, CTL_EOL); 812 sysctl_createv(clog, 0, &rnode, &rnode, 813 CTLFLAG_PERMANENT, 814 CTLTYPE_NODE, "setid", 815 SYSCTL_DESCR("Set-id processes' coredump settings."), 816 NULL, 0, NULL, 0, 817 CTL_CREATE, CTL_EOL); 818 sysctl_createv(clog, 0, &rnode, NULL, 819 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 820 CTLTYPE_INT, "dump", 821 SYSCTL_DESCR("Allow set-id processes to dump core."), 822 sysctl_security_setidcore, 0, &security_setidcore_dump, 823 sizeof(security_setidcore_dump), 824 CTL_CREATE, CTL_EOL); 825 sysctl_createv(clog, 0, &rnode, NULL, 826 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 827 CTLTYPE_STRING, "path", 828 SYSCTL_DESCR("Path pattern for set-id coredumps."), 829 sysctl_security_setidcorename, 0, 830 &security_setidcore_path, 831 sizeof(security_setidcore_path), 832 CTL_CREATE, CTL_EOL); 833 sysctl_createv(clog, 0, &rnode, NULL, 834 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 835 CTLTYPE_INT, "owner", 836 SYSCTL_DESCR("Owner id for set-id processes' cores."), 837 sysctl_security_setidcore, 0, &security_setidcore_owner, 838 0, 839 CTL_CREATE, CTL_EOL); 840 sysctl_createv(clog, 0, &rnode, NULL, 841 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 842 CTLTYPE_INT, "group", 843 SYSCTL_DESCR("Group id for set-id processes' cores."), 844 sysctl_security_setidcore, 0, &security_setidcore_group, 845 0, 846 CTL_CREATE, CTL_EOL); 847 sysctl_createv(clog, 0, &rnode, NULL, 848 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 849 CTLTYPE_INT, "mode", 850 SYSCTL_DESCR("Mode for set-id processes' cores."), 851 sysctl_security_setidcore, 0, &security_setidcore_mode, 852 0, 853 CTL_CREATE, CTL_EOL); 854 #ifdef KERN_SA 855 sysctl_createv(clog, 0, NULL, NULL, 856 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 857 CTLTYPE_INT, "no_sa_support", 858 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 859 NULL, 0, &sa_system_disabled, 0, 860 CTL_KERN, CTL_CREATE, CTL_EOL); 861 #else 862 sysctl_createv(clog, 0, NULL, NULL, 863 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 864 CTLTYPE_INT, "no_sa_support", 865 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 866 NULL, 1, NULL, 0, 867 CTL_KERN, CTL_CREATE, CTL_EOL); 868 #endif 869 870 /* kern.posix. */ 871 sysctl_createv(clog, 0, NULL, &rnode, 872 CTLFLAG_PERMANENT, 873 CTLTYPE_NODE, "posix", 874 SYSCTL_DESCR("POSIX options"), 875 NULL, 0, NULL, 0, 876 CTL_KERN, CTL_CREATE, CTL_EOL); 877 sysctl_createv(clog, 0, &rnode, NULL, 878 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 879 CTLTYPE_INT, "semmax", 880 SYSCTL_DESCR("Maximal number of semaphores"), 881 NULL, 0, &ksem_max, 0, 882 CTL_CREATE, CTL_EOL); 883 } 884 885 SYSCTL_SETUP(sysctl_kern_proc_setup, 886 "sysctl kern.proc/proc2/proc_args subtree setup") 887 { 888 889 sysctl_createv(clog, 0, NULL, NULL, 890 CTLFLAG_PERMANENT, 891 CTLTYPE_NODE, "kern", NULL, 892 NULL, 0, NULL, 0, 893 CTL_KERN, CTL_EOL); 894 895 sysctl_createv(clog, 0, NULL, NULL, 896 CTLFLAG_PERMANENT, 897 CTLTYPE_NODE, "proc", 898 SYSCTL_DESCR("System-wide process information"), 899 sysctl_doeproc, 0, NULL, 0, 900 CTL_KERN, KERN_PROC, CTL_EOL); 901 sysctl_createv(clog, 0, NULL, NULL, 902 CTLFLAG_PERMANENT, 903 CTLTYPE_NODE, "proc2", 904 SYSCTL_DESCR("Machine-independent process information"), 905 sysctl_doeproc, 0, NULL, 0, 906 CTL_KERN, KERN_PROC2, CTL_EOL); 907 sysctl_createv(clog, 0, NULL, NULL, 908 CTLFLAG_PERMANENT, 909 CTLTYPE_NODE, "proc_args", 910 SYSCTL_DESCR("Process argument information"), 911 sysctl_kern_proc_args, 0, NULL, 0, 912 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 913 914 /* 915 "nodes" under these: 916 917 KERN_PROC_ALL 918 KERN_PROC_PID pid 919 KERN_PROC_PGRP pgrp 920 KERN_PROC_SESSION sess 921 KERN_PROC_TTY tty 922 KERN_PROC_UID uid 923 KERN_PROC_RUID uid 924 KERN_PROC_GID gid 925 KERN_PROC_RGID gid 926 927 all in all, probably not worth the effort... 928 */ 929 } 930 931 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 932 { 933 u_int u; 934 u_quad_t q; 935 936 sysctl_createv(clog, 0, NULL, NULL, 937 CTLFLAG_PERMANENT, 938 CTLTYPE_NODE, "hw", NULL, 939 NULL, 0, NULL, 0, 940 CTL_HW, CTL_EOL); 941 942 sysctl_createv(clog, 0, NULL, NULL, 943 CTLFLAG_PERMANENT, 944 CTLTYPE_STRING, "machine", 945 SYSCTL_DESCR("Machine class"), 946 NULL, 0, machine, 0, 947 CTL_HW, HW_MACHINE, CTL_EOL); 948 sysctl_createv(clog, 0, NULL, NULL, 949 CTLFLAG_PERMANENT, 950 CTLTYPE_STRING, "model", 951 SYSCTL_DESCR("Machine model"), 952 NULL, 0, cpu_model, 0, 953 CTL_HW, HW_MODEL, CTL_EOL); 954 sysctl_createv(clog, 0, NULL, NULL, 955 CTLFLAG_PERMANENT, 956 CTLTYPE_INT, "ncpu", 957 SYSCTL_DESCR("Number of CPUs configured"), 958 NULL, 0, &ncpu, 0, 959 CTL_HW, HW_NCPU, CTL_EOL); 960 sysctl_createv(clog, 0, NULL, NULL, 961 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 962 CTLTYPE_INT, "byteorder", 963 SYSCTL_DESCR("System byte order"), 964 NULL, BYTE_ORDER, NULL, 0, 965 CTL_HW, HW_BYTEORDER, CTL_EOL); 966 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 967 UINT_MAX : physmem * PAGE_SIZE; 968 sysctl_createv(clog, 0, NULL, NULL, 969 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 970 CTLTYPE_INT, "physmem", 971 SYSCTL_DESCR("Bytes of physical memory"), 972 NULL, u, NULL, 0, 973 CTL_HW, HW_PHYSMEM, CTL_EOL); 974 sysctl_createv(clog, 0, NULL, NULL, 975 CTLFLAG_PERMANENT, 976 CTLTYPE_INT, "usermem", 977 SYSCTL_DESCR("Bytes of non-kernel memory"), 978 sysctl_hw_usermem, 0, NULL, 0, 979 CTL_HW, HW_USERMEM, CTL_EOL); 980 sysctl_createv(clog, 0, NULL, NULL, 981 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 982 CTLTYPE_INT, "pagesize", 983 SYSCTL_DESCR("Software page size"), 984 NULL, PAGE_SIZE, NULL, 0, 985 CTL_HW, HW_PAGESIZE, CTL_EOL); 986 sysctl_createv(clog, 0, NULL, NULL, 987 CTLFLAG_PERMANENT, 988 CTLTYPE_STRING, "machine_arch", 989 SYSCTL_DESCR("Machine CPU class"), 990 NULL, 0, machine_arch, 0, 991 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 992 sysctl_createv(clog, 0, NULL, NULL, 993 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 994 CTLTYPE_INT, "alignbytes", 995 SYSCTL_DESCR("Alignment constraint for all possible " 996 "data types"), 997 NULL, ALIGNBYTES, NULL, 0, 998 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 999 sysctl_createv(clog, 0, NULL, NULL, 1000 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 1001 CTLTYPE_STRING, "cnmagic", 1002 SYSCTL_DESCR("Console magic key sequence"), 1003 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 1004 CTL_HW, HW_CNMAGIC, CTL_EOL); 1005 q = (u_quad_t)physmem * PAGE_SIZE; 1006 sysctl_createv(clog, 0, NULL, NULL, 1007 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 1008 CTLTYPE_QUAD, "physmem64", 1009 SYSCTL_DESCR("Bytes of physical memory"), 1010 NULL, q, NULL, 0, 1011 CTL_HW, HW_PHYSMEM64, CTL_EOL); 1012 sysctl_createv(clog, 0, NULL, NULL, 1013 CTLFLAG_PERMANENT, 1014 CTLTYPE_QUAD, "usermem64", 1015 SYSCTL_DESCR("Bytes of non-kernel memory"), 1016 sysctl_hw_usermem, 0, NULL, 0, 1017 CTL_HW, HW_USERMEM64, CTL_EOL); 1018 sysctl_createv(clog, 0, NULL, NULL, 1019 CTLFLAG_PERMANENT, 1020 CTLTYPE_INT, "ncpuonline", 1021 SYSCTL_DESCR("Number of CPUs online"), 1022 NULL, 0, &ncpuonline, 0, 1023 CTL_HW, HW_NCPUONLINE, CTL_EOL); 1024 } 1025 1026 #ifdef DEBUG 1027 /* 1028 * Debugging related system variables. 1029 */ 1030 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 1031 struct ctldebug debug5, debug6, debug7, debug8, debug9; 1032 struct ctldebug debug10, debug11, debug12, debug13, debug14; 1033 struct ctldebug debug15, debug16, debug17, debug18, debug19; 1034 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 1035 &debug0, &debug1, &debug2, &debug3, &debug4, 1036 &debug5, &debug6, &debug7, &debug8, &debug9, 1037 &debug10, &debug11, &debug12, &debug13, &debug14, 1038 &debug15, &debug16, &debug17, &debug18, &debug19, 1039 }; 1040 1041 /* 1042 * this setup routine is a replacement for debug_sysctl() 1043 * 1044 * note that it creates several nodes per defined debug variable 1045 */ 1046 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 1047 { 1048 struct ctldebug *cdp; 1049 char nodename[20]; 1050 int i; 1051 1052 /* 1053 * two ways here: 1054 * 1055 * the "old" way (debug.name -> value) which was emulated by 1056 * the sysctl(8) binary 1057 * 1058 * the new way, which the sysctl(8) binary was actually using 1059 1060 node debug 1061 node debug.0 1062 string debug.0.name 1063 int debug.0.value 1064 int debug.name 1065 1066 */ 1067 1068 sysctl_createv(clog, 0, NULL, NULL, 1069 CTLFLAG_PERMANENT, 1070 CTLTYPE_NODE, "debug", NULL, 1071 NULL, 0, NULL, 0, 1072 CTL_DEBUG, CTL_EOL); 1073 1074 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 1075 cdp = debugvars[i]; 1076 if (cdp->debugname == NULL || cdp->debugvar == NULL) 1077 continue; 1078 1079 snprintf(nodename, sizeof(nodename), "debug%d", i); 1080 sysctl_createv(clog, 0, NULL, NULL, 1081 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1082 CTLTYPE_NODE, nodename, NULL, 1083 NULL, 0, NULL, 0, 1084 CTL_DEBUG, i, CTL_EOL); 1085 sysctl_createv(clog, 0, NULL, NULL, 1086 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1087 CTLTYPE_STRING, "name", NULL, 1088 /*XXXUNCONST*/ 1089 NULL, 0, __UNCONST(cdp->debugname), 0, 1090 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 1091 sysctl_createv(clog, 0, NULL, NULL, 1092 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1093 CTLTYPE_INT, "value", NULL, 1094 NULL, 0, cdp->debugvar, 0, 1095 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 1096 sysctl_createv(clog, 0, NULL, NULL, 1097 CTLFLAG_PERMANENT, 1098 CTLTYPE_INT, cdp->debugname, NULL, 1099 NULL, 0, cdp->debugvar, 0, 1100 CTL_DEBUG, CTL_CREATE, CTL_EOL); 1101 } 1102 } 1103 #endif /* DEBUG */ 1104 1105 /* 1106 * ******************************************************************** 1107 * section 2: private node-specific helper routines. 1108 * ******************************************************************** 1109 */ 1110 1111 #ifdef DIAGNOSTIC 1112 static int 1113 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 1114 { 1115 int newtrig, error; 1116 struct sysctlnode node; 1117 1118 newtrig = 0; 1119 node = *rnode; 1120 node.sysctl_data = &newtrig; 1121 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1122 if (error || newp == NULL) 1123 return (error); 1124 1125 if (newtrig != 0) 1126 panic("Panic triggered"); 1127 1128 return (error); 1129 } 1130 #endif 1131 1132 /* 1133 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 1134 * new value is lower than desiredvnodes and then calls reinit 1135 * routines that needs to adjust to the new value. 1136 */ 1137 static int 1138 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 1139 { 1140 int error, new_vnodes, old_vnodes, new_max; 1141 struct sysctlnode node; 1142 1143 new_vnodes = desiredvnodes; 1144 node = *rnode; 1145 node.sysctl_data = &new_vnodes; 1146 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1147 if (error || newp == NULL) 1148 return (error); 1149 1150 /* Limits: 75% of KVA and physical memory. */ 1151 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 1152 if (new_vnodes > new_max) 1153 new_vnodes = new_max; 1154 1155 old_vnodes = desiredvnodes; 1156 desiredvnodes = new_vnodes; 1157 if (new_vnodes < old_vnodes) { 1158 error = vfs_drainvnodes(new_vnodes, l); 1159 if (error) { 1160 desiredvnodes = old_vnodes; 1161 return (error); 1162 } 1163 } 1164 vfs_reinit(); 1165 nchreinit(); 1166 1167 return (0); 1168 } 1169 1170 /* 1171 * sysctl helper routine for rtc_offset - set time after changes 1172 */ 1173 static int 1174 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1175 { 1176 struct timespec ts, delta; 1177 int error, new_rtc_offset; 1178 struct sysctlnode node; 1179 1180 new_rtc_offset = rtc_offset; 1181 node = *rnode; 1182 node.sysctl_data = &new_rtc_offset; 1183 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1184 if (error || newp == NULL) 1185 return (error); 1186 1187 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1188 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1189 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1190 return (EPERM); 1191 if (rtc_offset == new_rtc_offset) 1192 return (0); 1193 1194 /* if we change the offset, adjust the time */ 1195 nanotime(&ts); 1196 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1197 delta.tv_nsec = 0; 1198 timespecadd(&ts, &delta, &ts); 1199 rtc_offset = new_rtc_offset; 1200 return (settime(l->l_proc, &ts)); 1201 } 1202 1203 /* 1204 * sysctl helper routine for kern.maxproc. Ensures that the new 1205 * values are not too low or too high. 1206 */ 1207 static int 1208 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1209 { 1210 int error, nmaxproc; 1211 struct sysctlnode node; 1212 1213 nmaxproc = maxproc; 1214 node = *rnode; 1215 node.sysctl_data = &nmaxproc; 1216 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1217 if (error || newp == NULL) 1218 return (error); 1219 1220 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1221 return (EINVAL); 1222 #ifdef __HAVE_CPU_MAXPROC 1223 if (nmaxproc > cpu_maxproc()) 1224 return (EINVAL); 1225 #endif 1226 maxproc = nmaxproc; 1227 1228 return (0); 1229 } 1230 1231 /* 1232 * sysctl helper function for kern.hostid. The hostid is a long, but 1233 * we export it as an int, so we need to give it a little help. 1234 */ 1235 static int 1236 sysctl_kern_hostid(SYSCTLFN_ARGS) 1237 { 1238 int error, inthostid; 1239 struct sysctlnode node; 1240 1241 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1242 node = *rnode; 1243 node.sysctl_data = &inthostid; 1244 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1245 if (error || newp == NULL) 1246 return (error); 1247 1248 hostid = (unsigned)inthostid; 1249 1250 return (0); 1251 } 1252 1253 /* 1254 * sysctl helper function for kern.hostname and kern.domainnname. 1255 * resets the relevant recorded length when the underlying name is 1256 * changed. 1257 */ 1258 static int 1259 sysctl_setlen(SYSCTLFN_ARGS) 1260 { 1261 int error; 1262 1263 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1264 if (error || newp == NULL) 1265 return (error); 1266 1267 switch (rnode->sysctl_num) { 1268 case KERN_HOSTNAME: 1269 hostnamelen = strlen((const char*)rnode->sysctl_data); 1270 break; 1271 case KERN_DOMAINNAME: 1272 domainnamelen = strlen((const char*)rnode->sysctl_data); 1273 break; 1274 } 1275 1276 return (0); 1277 } 1278 1279 /* 1280 * sysctl helper routine for kern.clockrate. Assembles a struct on 1281 * the fly to be returned to the caller. 1282 */ 1283 static int 1284 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1285 { 1286 struct clockinfo clkinfo; 1287 struct sysctlnode node; 1288 1289 clkinfo.tick = tick; 1290 clkinfo.tickadj = tickadj; 1291 clkinfo.hz = hz; 1292 clkinfo.profhz = profhz; 1293 clkinfo.stathz = stathz ? stathz : hz; 1294 1295 node = *rnode; 1296 node.sysctl_data = &clkinfo; 1297 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1298 } 1299 1300 1301 /* 1302 * sysctl helper routine for kern.file pseudo-subtree. 1303 */ 1304 static int 1305 sysctl_kern_file(SYSCTLFN_ARGS) 1306 { 1307 int error; 1308 size_t buflen; 1309 struct file *fp, *dp, *np, fbuf; 1310 char *start, *where; 1311 1312 start = where = oldp; 1313 buflen = *oldlenp; 1314 dp = NULL; 1315 1316 if (where == NULL) { 1317 /* 1318 * overestimate by 10 files 1319 */ 1320 *oldlenp = sizeof(filehead) + (nfiles + 10) * 1321 sizeof(struct file); 1322 return (0); 1323 } 1324 1325 /* 1326 * first dcopyout filehead 1327 */ 1328 if (buflen < sizeof(filehead)) { 1329 *oldlenp = 0; 1330 return (0); 1331 } 1332 sysctl_unlock(); 1333 error = dcopyout(l, &filehead, where, sizeof(filehead)); 1334 if (error) { 1335 sysctl_relock(); 1336 return error; 1337 } 1338 buflen -= sizeof(filehead); 1339 where += sizeof(filehead); 1340 1341 /* 1342 * allocate dummy file descriptor to make position in list 1343 */ 1344 if ((dp = fgetdummy()) == NULL) { 1345 sysctl_relock(); 1346 return ENOMEM; 1347 } 1348 1349 /* 1350 * followed by an array of file structures 1351 */ 1352 mutex_enter(&filelist_lock); 1353 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1354 np = LIST_NEXT(fp, f_list); 1355 mutex_enter(&fp->f_lock); 1356 if (fp->f_count == 0) { 1357 mutex_exit(&fp->f_lock); 1358 continue; 1359 } 1360 /* 1361 * XXX Need to prevent that from being an alternative way 1362 * XXX to getting process information. 1363 */ 1364 if (kauth_authorize_generic(l->l_cred, 1365 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 1366 mutex_exit(&fp->f_lock); 1367 continue; 1368 } 1369 if (buflen < sizeof(struct file)) { 1370 *oldlenp = where - start; 1371 mutex_exit(&fp->f_lock); 1372 error = ENOMEM; 1373 break; 1374 } 1375 memcpy(&fbuf, fp, sizeof(fbuf)); 1376 LIST_INSERT_AFTER(fp, dp, f_list); 1377 mutex_exit(&fp->f_lock); 1378 mutex_exit(&filelist_lock); 1379 error = dcopyout(l, &fbuf, where, sizeof(fbuf)); 1380 if (error) { 1381 mutex_enter(&filelist_lock); 1382 LIST_REMOVE(dp, f_list); 1383 break; 1384 } 1385 buflen -= sizeof(struct file); 1386 where += sizeof(struct file); 1387 mutex_enter(&filelist_lock); 1388 np = LIST_NEXT(dp, f_list); 1389 LIST_REMOVE(dp, f_list); 1390 } 1391 mutex_exit(&filelist_lock); 1392 *oldlenp = where - start; 1393 if (dp != NULL) 1394 fputdummy(dp); 1395 sysctl_relock(); 1396 return (error); 1397 } 1398 1399 /* 1400 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1401 * former it merely checks the message buffer is set up. For the latter, 1402 * it also copies out the data if necessary. 1403 */ 1404 static int 1405 sysctl_msgbuf(SYSCTLFN_ARGS) 1406 { 1407 char *where = oldp; 1408 size_t len, maxlen; 1409 long beg, end; 1410 extern kmutex_t log_lock; 1411 int error; 1412 1413 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1414 msgbufenabled = 0; 1415 return (ENXIO); 1416 } 1417 1418 switch (rnode->sysctl_num) { 1419 case KERN_MSGBUFSIZE: { 1420 struct sysctlnode node = *rnode; 1421 int msg_bufs = (int)msgbufp->msg_bufs; 1422 node.sysctl_data = &msg_bufs; 1423 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1424 } 1425 case KERN_MSGBUF: 1426 break; 1427 default: 1428 return (EOPNOTSUPP); 1429 } 1430 1431 if (newp != NULL) 1432 return (EPERM); 1433 1434 if (oldp == NULL) { 1435 /* always return full buffer size */ 1436 *oldlenp = msgbufp->msg_bufs; 1437 return (0); 1438 } 1439 1440 sysctl_unlock(); 1441 1442 /* 1443 * First, copy from the write pointer to the end of 1444 * message buffer. 1445 */ 1446 error = 0; 1447 mutex_spin_enter(&log_lock); 1448 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1449 beg = msgbufp->msg_bufx; 1450 end = msgbufp->msg_bufs; 1451 mutex_spin_exit(&log_lock); 1452 1453 while (maxlen > 0) { 1454 len = MIN(end - beg, maxlen); 1455 if (len == 0) 1456 break; 1457 /* XXX unlocked, but hardly matters. */ 1458 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1459 if (error) 1460 break; 1461 where += len; 1462 maxlen -= len; 1463 1464 /* 1465 * ... then, copy from the beginning of message buffer to 1466 * the write pointer. 1467 */ 1468 beg = 0; 1469 end = msgbufp->msg_bufx; 1470 } 1471 1472 sysctl_relock(); 1473 return (error); 1474 } 1475 1476 /* 1477 * sysctl helper routine for kern.defcorename. In the case of a new 1478 * string being assigned, check that it's not a zero-length string. 1479 * (XXX the check in -current doesn't work, but do we really care?) 1480 */ 1481 static int 1482 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1483 { 1484 int error; 1485 char *newcorename; 1486 struct sysctlnode node; 1487 1488 newcorename = PNBUF_GET(); 1489 node = *rnode; 1490 node.sysctl_data = &newcorename[0]; 1491 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1492 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1493 if (error || newp == NULL) { 1494 goto done; 1495 } 1496 1497 /* 1498 * when sysctl_lookup() deals with a string, it's guaranteed 1499 * to come back nul terminated. So there. :) 1500 */ 1501 if (strlen(newcorename) == 0) { 1502 error = EINVAL; 1503 } else { 1504 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1505 error = 0; 1506 } 1507 done: 1508 PNBUF_PUT(newcorename); 1509 return error; 1510 } 1511 1512 /* 1513 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1514 * across all cpus. 1515 */ 1516 static int 1517 sysctl_kern_cptime(SYSCTLFN_ARGS) 1518 { 1519 struct sysctlnode node = *rnode; 1520 uint64_t *cp_time = NULL; 1521 int error, n = ncpu, i; 1522 struct cpu_info *ci; 1523 CPU_INFO_ITERATOR cii; 1524 1525 /* 1526 * if you specifically pass a buffer that is the size of the 1527 * sum, or if you are probing for the size, you get the "sum" 1528 * of cp_time (and the size thereof) across all processors. 1529 * 1530 * alternately, you can pass an additional mib number and get 1531 * cp_time for that particular processor. 1532 */ 1533 switch (namelen) { 1534 case 0: 1535 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1536 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1537 n = -1; /* SUM */ 1538 } 1539 else { 1540 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1541 n = -2; /* ALL */ 1542 } 1543 break; 1544 case 1: 1545 if (name[0] < 0 || name[0] >= n) 1546 return (ENOENT); /* ENOSUCHPROCESSOR */ 1547 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1548 n = name[0]; 1549 /* 1550 * adjust these so that sysctl_lookup() will be happy 1551 */ 1552 name++; 1553 namelen--; 1554 break; 1555 default: 1556 return (EINVAL); 1557 } 1558 1559 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1560 if (cp_time == NULL) 1561 return (ENOMEM); 1562 node.sysctl_data = cp_time; 1563 memset(cp_time, 0, node.sysctl_size); 1564 1565 for (CPU_INFO_FOREACH(cii, ci)) { 1566 if (n <= 0) { 1567 for (i = 0; i < CPUSTATES; i++) { 1568 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1569 } 1570 } 1571 /* 1572 * if a specific processor was requested and we just 1573 * did it, we're done here 1574 */ 1575 if (n == 0) 1576 break; 1577 /* 1578 * if doing "all", skip to next cp_time set for next processor 1579 */ 1580 if (n == -2) 1581 cp_time += CPUSTATES; 1582 /* 1583 * if we're doing a specific processor, we're one 1584 * processor closer 1585 */ 1586 if (n > 0) 1587 n--; 1588 } 1589 1590 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1591 kmem_free(node.sysctl_data, node.sysctl_size); 1592 return (error); 1593 } 1594 1595 #if NPTY > 0 1596 /* 1597 * sysctl helper routine for kern.maxptys. Ensures that any new value 1598 * is acceptable to the pty subsystem. 1599 */ 1600 static int 1601 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1602 { 1603 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1604 int error, xmax; 1605 struct sysctlnode node; 1606 1607 /* get current value of maxptys */ 1608 xmax = pty_maxptys(0, 0); 1609 1610 node = *rnode; 1611 node.sysctl_data = &xmax; 1612 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1613 if (error || newp == NULL) 1614 return (error); 1615 1616 if (xmax != pty_maxptys(xmax, 1)) 1617 return (EINVAL); 1618 1619 return (0); 1620 } 1621 #endif /* NPTY > 0 */ 1622 1623 /* 1624 * sysctl helper routine for kern.sbmax. Basically just ensures that 1625 * any new value is not too small. 1626 */ 1627 static int 1628 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1629 { 1630 int error, new_sbmax; 1631 struct sysctlnode node; 1632 1633 new_sbmax = sb_max; 1634 node = *rnode; 1635 node.sysctl_data = &new_sbmax; 1636 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1637 if (error || newp == NULL) 1638 return (error); 1639 1640 KERNEL_LOCK(1, NULL); 1641 error = sb_max_set(new_sbmax); 1642 KERNEL_UNLOCK_ONE(NULL); 1643 1644 return (error); 1645 } 1646 1647 /* 1648 * sysctl helper routine for kern.urandom node. Picks a random number 1649 * for you. 1650 */ 1651 static int 1652 sysctl_kern_urnd(SYSCTLFN_ARGS) 1653 { 1654 #if NRND > 0 1655 int v, rv; 1656 1657 KERNEL_LOCK(1, NULL); 1658 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1659 KERNEL_UNLOCK_ONE(NULL); 1660 if (rv == sizeof(v)) { 1661 struct sysctlnode node = *rnode; 1662 node.sysctl_data = &v; 1663 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1664 } 1665 else 1666 return (EIO); /*XXX*/ 1667 #else 1668 return (EOPNOTSUPP); 1669 #endif 1670 } 1671 1672 /* 1673 * sysctl helper routine for kern.arandom node. Picks a random number 1674 * for you. 1675 */ 1676 static int 1677 sysctl_kern_arnd(SYSCTLFN_ARGS) 1678 { 1679 #if NRND > 0 1680 int error; 1681 void *v; 1682 struct sysctlnode node = *rnode; 1683 1684 if (*oldlenp == 0) 1685 return 0; 1686 if (*oldlenp > 8192) 1687 return E2BIG; 1688 1689 v = kmem_alloc(*oldlenp, KM_SLEEP); 1690 arc4randbytes(v, *oldlenp); 1691 node.sysctl_data = v; 1692 node.sysctl_size = *oldlenp; 1693 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1694 kmem_free(v, *oldlenp); 1695 return error; 1696 #else 1697 return (EOPNOTSUPP); 1698 #endif 1699 } 1700 /* 1701 * sysctl helper routine to do kern.lwp.* work. 1702 */ 1703 static int 1704 sysctl_kern_lwp(SYSCTLFN_ARGS) 1705 { 1706 struct kinfo_lwp klwp; 1707 struct proc *p; 1708 struct lwp *l2, *l3; 1709 char *where, *dp; 1710 int pid, elem_size, elem_count; 1711 int buflen, needed, error; 1712 bool gotit; 1713 1714 if (namelen == 1 && name[0] == CTL_QUERY) 1715 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1716 1717 dp = where = oldp; 1718 buflen = where != NULL ? *oldlenp : 0; 1719 error = needed = 0; 1720 1721 if (newp != NULL || namelen != 3) 1722 return (EINVAL); 1723 pid = name[0]; 1724 elem_size = name[1]; 1725 elem_count = name[2]; 1726 1727 sysctl_unlock(); 1728 if (pid == -1) { 1729 mutex_enter(proc_lock); 1730 LIST_FOREACH(p, &allproc, p_list) { 1731 /* Grab a hold on the process. */ 1732 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1733 continue; 1734 } 1735 mutex_exit(proc_lock); 1736 1737 mutex_enter(p->p_lock); 1738 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1739 if (buflen >= elem_size && elem_count > 0) { 1740 lwp_lock(l2); 1741 fill_lwp(l2, &klwp); 1742 lwp_unlock(l2); 1743 mutex_exit(p->p_lock); 1744 1745 /* 1746 * Copy out elem_size, but not 1747 * larger than the size of a 1748 * struct kinfo_proc2. 1749 */ 1750 error = dcopyout(l, &klwp, dp, 1751 min(sizeof(klwp), elem_size)); 1752 if (error) { 1753 rw_exit(&p->p_reflock); 1754 goto cleanup; 1755 } 1756 mutex_enter(p->p_lock); 1757 LIST_FOREACH(l3, &p->p_lwps, 1758 l_sibling) { 1759 if (l2 == l3) 1760 break; 1761 } 1762 if (l3 == NULL) { 1763 mutex_exit(p->p_lock); 1764 rw_exit(&p->p_reflock); 1765 error = EAGAIN; 1766 goto cleanup; 1767 } 1768 dp += elem_size; 1769 buflen -= elem_size; 1770 elem_count--; 1771 } 1772 needed += elem_size; 1773 } 1774 mutex_exit(p->p_lock); 1775 1776 /* Drop reference to process. */ 1777 mutex_enter(proc_lock); 1778 rw_exit(&p->p_reflock); 1779 } 1780 mutex_exit(proc_lock); 1781 } else { 1782 mutex_enter(proc_lock); 1783 p = p_find(pid, PFIND_LOCKED); 1784 if (p == NULL) { 1785 error = ESRCH; 1786 mutex_exit(proc_lock); 1787 goto cleanup; 1788 } 1789 /* Grab a hold on the process. */ 1790 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1791 mutex_exit(proc_lock); 1792 if (!gotit) { 1793 error = ESRCH; 1794 goto cleanup; 1795 } 1796 1797 mutex_enter(p->p_lock); 1798 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1799 if (buflen >= elem_size && elem_count > 0) { 1800 lwp_lock(l2); 1801 fill_lwp(l2, &klwp); 1802 lwp_unlock(l2); 1803 mutex_exit(p->p_lock); 1804 /* 1805 * Copy out elem_size, but not larger than 1806 * the size of a struct kinfo_proc2. 1807 */ 1808 error = dcopyout(l, &klwp, dp, 1809 min(sizeof(klwp), elem_size)); 1810 if (error) { 1811 rw_exit(&p->p_reflock); 1812 goto cleanup; 1813 } 1814 mutex_enter(p->p_lock); 1815 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1816 if (l2 == l3) 1817 break; 1818 } 1819 if (l3 == NULL) { 1820 mutex_exit(p->p_lock); 1821 rw_exit(&p->p_reflock); 1822 error = EAGAIN; 1823 goto cleanup; 1824 } 1825 dp += elem_size; 1826 buflen -= elem_size; 1827 elem_count--; 1828 } 1829 needed += elem_size; 1830 } 1831 mutex_exit(p->p_lock); 1832 1833 /* Drop reference to process. */ 1834 rw_exit(&p->p_reflock); 1835 } 1836 1837 if (where != NULL) { 1838 *oldlenp = dp - where; 1839 if (needed > *oldlenp) { 1840 sysctl_relock(); 1841 return (ENOMEM); 1842 } 1843 } else { 1844 needed += KERN_LWPSLOP; 1845 *oldlenp = needed; 1846 } 1847 error = 0; 1848 cleanup: 1849 sysctl_relock(); 1850 return (error); 1851 } 1852 1853 /* 1854 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1855 * given value is not too large or two small, and is at least one 1856 * timer tick if not zero. 1857 */ 1858 static int 1859 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1860 { 1861 /* userland sees value in ms, internally is in ticks */ 1862 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1863 int error, timo, lsleep; 1864 struct sysctlnode node; 1865 1866 lsleep = forkfsleep * 1000 / hz; 1867 node = *rnode; 1868 node.sysctl_data = &lsleep; 1869 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1870 if (error || newp == NULL) 1871 return (error); 1872 1873 /* refuse negative values, and overly 'long time' */ 1874 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1875 return (EINVAL); 1876 1877 timo = mstohz(lsleep); 1878 1879 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1880 if (lsleep != 0 && timo == 0) 1881 forkfsleep = 1; 1882 else 1883 forkfsleep = timo; 1884 1885 return (0); 1886 } 1887 1888 /* 1889 * sysctl helper routine for kern.root_partition 1890 */ 1891 static int 1892 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1893 { 1894 int rootpart = DISKPART(rootdev); 1895 struct sysctlnode node = *rnode; 1896 1897 node.sysctl_data = &rootpart; 1898 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1899 } 1900 1901 /* 1902 * sysctl helper function for kern.drivers 1903 */ 1904 static int 1905 sysctl_kern_drivers(SYSCTLFN_ARGS) 1906 { 1907 int error; 1908 size_t buflen; 1909 struct kinfo_drivers kd; 1910 char *start, *where; 1911 const char *dname; 1912 int i; 1913 extern struct devsw_conv *devsw_conv; 1914 extern int max_devsw_convs; 1915 1916 if (newp != NULL || namelen != 0) 1917 return (EINVAL); 1918 1919 start = where = oldp; 1920 buflen = *oldlenp; 1921 if (where == NULL) { 1922 *oldlenp = max_devsw_convs * sizeof kd; 1923 return 0; 1924 } 1925 1926 /* 1927 * An array of kinfo_drivers structures 1928 */ 1929 error = 0; 1930 sysctl_unlock(); 1931 mutex_enter(&device_lock); 1932 for (i = 0; i < max_devsw_convs; i++) { 1933 dname = devsw_conv[i].d_name; 1934 if (dname == NULL) 1935 continue; 1936 if (buflen < sizeof kd) { 1937 error = ENOMEM; 1938 break; 1939 } 1940 memset(&kd, 0, sizeof(kd)); 1941 kd.d_bmajor = devsw_conv[i].d_bmajor; 1942 kd.d_cmajor = devsw_conv[i].d_cmajor; 1943 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1944 mutex_exit(&device_lock); 1945 error = dcopyout(l, &kd, where, sizeof kd); 1946 mutex_enter(&device_lock); 1947 if (error != 0) 1948 break; 1949 buflen -= sizeof kd; 1950 where += sizeof kd; 1951 } 1952 mutex_exit(&device_lock); 1953 sysctl_relock(); 1954 *oldlenp = where - start; 1955 return error; 1956 } 1957 1958 /* 1959 * sysctl helper function for kern.file2 1960 */ 1961 static int 1962 sysctl_kern_file2(SYSCTLFN_ARGS) 1963 { 1964 struct proc *p; 1965 struct file *fp, *tp, *np; 1966 struct filedesc *fd; 1967 struct kinfo_file kf; 1968 char *dp; 1969 u_int i, op; 1970 size_t len, needed, elem_size, out_size; 1971 int error, arg, elem_count; 1972 fdfile_t *ff; 1973 1974 if (namelen == 1 && name[0] == CTL_QUERY) 1975 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1976 1977 if (namelen != 4) 1978 return (EINVAL); 1979 1980 error = 0; 1981 dp = oldp; 1982 len = (oldp != NULL) ? *oldlenp : 0; 1983 op = name[0]; 1984 arg = name[1]; 1985 elem_size = name[2]; 1986 elem_count = name[3]; 1987 out_size = MIN(sizeof(kf), elem_size); 1988 needed = 0; 1989 1990 if (elem_size < 1 || elem_count < 0) 1991 return (EINVAL); 1992 1993 switch (op) { 1994 case KERN_FILE_BYFILE: 1995 /* 1996 * doesn't use arg so it must be zero 1997 */ 1998 if (arg != 0) 1999 return (EINVAL); 2000 sysctl_unlock(); 2001 /* 2002 * allocate dummy file descriptor to make position in list 2003 */ 2004 if ((tp = fgetdummy()) == NULL) { 2005 sysctl_relock(); 2006 return ENOMEM; 2007 } 2008 mutex_enter(&filelist_lock); 2009 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 2010 np = LIST_NEXT(fp, f_list); 2011 mutex_enter(&fp->f_lock); 2012 if (fp->f_count == 0) { 2013 mutex_exit(&fp->f_lock); 2014 continue; 2015 } 2016 /* 2017 * XXX Need to prevent that from being an alternative 2018 * XXX way for getting process information. 2019 */ 2020 if (kauth_authorize_generic(l->l_cred, 2021 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 2022 mutex_exit(&fp->f_lock); 2023 continue; 2024 } 2025 if (len >= elem_size && elem_count > 0) { 2026 fill_file(&kf, fp, NULL, 0, 0); 2027 LIST_INSERT_AFTER(fp, tp, f_list); 2028 mutex_exit(&fp->f_lock); 2029 mutex_exit(&filelist_lock); 2030 error = dcopyout(l, &kf, dp, out_size); 2031 mutex_enter(&filelist_lock); 2032 np = LIST_NEXT(tp, f_list); 2033 LIST_REMOVE(tp, f_list); 2034 if (error) { 2035 break; 2036 } 2037 dp += elem_size; 2038 len -= elem_size; 2039 } else { 2040 mutex_exit(&fp->f_lock); 2041 } 2042 if (elem_count > 0) { 2043 needed += elem_size; 2044 if (elem_count != INT_MAX) 2045 elem_count--; 2046 } 2047 } 2048 mutex_exit(&filelist_lock); 2049 fputdummy(tp); 2050 sysctl_relock(); 2051 break; 2052 case KERN_FILE_BYPID: 2053 if (arg < -1) 2054 /* -1 means all processes */ 2055 return (EINVAL); 2056 sysctl_unlock(); 2057 mutex_enter(proc_lock); 2058 LIST_FOREACH(p, &allproc, p_list) { 2059 if (p->p_stat == SIDL) { 2060 /* skip embryonic processes */ 2061 continue; 2062 } 2063 if (arg > 0 && p->p_pid != arg) { 2064 /* pick only the one we want */ 2065 /* XXX want 0 to mean "kernel files" */ 2066 continue; 2067 } 2068 mutex_enter(p->p_lock); 2069 error = kauth_authorize_process(l->l_cred, 2070 KAUTH_PROCESS_CANSEE, p, 2071 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_OPENFILES), 2072 NULL, NULL); 2073 mutex_exit(p->p_lock); 2074 if (error != 0) { 2075 /* 2076 * Don't leak kauth retval if we're silently 2077 * skipping this entry. 2078 */ 2079 error = 0; 2080 continue; 2081 } 2082 2083 /* 2084 * Grab a hold on the process. 2085 */ 2086 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 2087 continue; 2088 } 2089 mutex_exit(proc_lock); 2090 2091 /* XXX Do we need to check permission per file? */ 2092 fd = p->p_fd; 2093 mutex_enter(&fd->fd_lock); 2094 for (i = 0; i < fd->fd_nfiles; i++) { 2095 if ((ff = fd->fd_ofiles[i]) == NULL) { 2096 continue; 2097 } 2098 mutex_enter(&ff->ff_lock); 2099 if ((fp = ff->ff_file) == NULL) { 2100 mutex_exit(&ff->ff_lock); 2101 continue; 2102 } 2103 if (len >= elem_size && elem_count > 0) { 2104 mutex_enter(&fp->f_lock); 2105 fill_file(&kf, fp, ff, i, p->p_pid); 2106 mutex_exit(&fp->f_lock); 2107 mutex_exit(&ff->ff_lock); 2108 mutex_exit(&fd->fd_lock); 2109 error = dcopyout(l, &kf, dp, out_size); 2110 mutex_enter(&fd->fd_lock); 2111 if (error) 2112 break; 2113 dp += elem_size; 2114 len -= elem_size; 2115 } else { 2116 mutex_exit(&ff->ff_lock); 2117 } 2118 if (elem_count > 0) { 2119 needed += elem_size; 2120 if (elem_count != INT_MAX) 2121 elem_count--; 2122 } 2123 } 2124 mutex_exit(&fd->fd_lock); 2125 2126 /* 2127 * Release reference to process. 2128 */ 2129 mutex_enter(proc_lock); 2130 rw_exit(&p->p_reflock); 2131 } 2132 mutex_exit(proc_lock); 2133 sysctl_relock(); 2134 break; 2135 default: 2136 return (EINVAL); 2137 } 2138 2139 if (oldp == NULL) 2140 needed += KERN_FILESLOP * elem_size; 2141 *oldlenp = needed; 2142 2143 return (error); 2144 } 2145 2146 static void 2147 fill_file(struct kinfo_file *kp, const file_t *fp, const fdfile_t *ff, 2148 int i, pid_t pid) 2149 { 2150 2151 memset(kp, 0, sizeof(*kp)); 2152 2153 kp->ki_fileaddr = PTRTOUINT64(fp); 2154 kp->ki_flag = fp->f_flag; 2155 kp->ki_iflags = fp->f_iflags; 2156 kp->ki_ftype = fp->f_type; 2157 kp->ki_count = fp->f_count; 2158 kp->ki_msgcount = fp->f_msgcount; 2159 kp->ki_fucred = PTRTOUINT64(fp->f_cred); 2160 kp->ki_fuid = kauth_cred_geteuid(fp->f_cred); 2161 kp->ki_fgid = kauth_cred_getegid(fp->f_cred); 2162 kp->ki_fops = PTRTOUINT64(fp->f_ops); 2163 kp->ki_foffset = fp->f_offset; 2164 kp->ki_fdata = PTRTOUINT64(fp->f_data); 2165 2166 /* vnode information to glue this file to something */ 2167 if (fp->f_type == DTYPE_VNODE) { 2168 struct vnode *vp = (struct vnode *)fp->f_data; 2169 2170 kp->ki_vun = PTRTOUINT64(vp->v_un.vu_socket); 2171 kp->ki_vsize = vp->v_size; 2172 kp->ki_vtype = vp->v_type; 2173 kp->ki_vtag = vp->v_tag; 2174 kp->ki_vdata = PTRTOUINT64(vp->v_data); 2175 } 2176 2177 /* process information when retrieved via KERN_FILE_BYPID */ 2178 if (ff != NULL) { 2179 kp->ki_pid = pid; 2180 kp->ki_fd = i; 2181 kp->ki_ofileflags = ff->ff_exclose; 2182 kp->ki_usecount = ff->ff_refcnt; 2183 } 2184 } 2185 2186 static int 2187 sysctl_doeproc(SYSCTLFN_ARGS) 2188 { 2189 struct eproc *eproc; 2190 struct kinfo_proc2 *kproc2; 2191 struct kinfo_proc *dp; 2192 struct proc *p, *next, *marker; 2193 char *where, *dp2; 2194 int type, op, arg, error; 2195 u_int elem_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 = oldp; 2203 dp2 = where = oldp; 2204 buflen = where != NULL ? *oldlenp : 0; 2205 error = 0; 2206 needed = 0; 2207 type = rnode->sysctl_num; 2208 2209 if (type == KERN_PROC) { 2210 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 2211 return (EINVAL); 2212 op = name[0]; 2213 if (op != KERN_PROC_ALL) 2214 arg = name[1]; 2215 else 2216 arg = 0; /* Quell compiler warning */ 2217 elem_size = elem_count = 0; /* Ditto */ 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 } 2226 2227 sysctl_unlock(); 2228 2229 if (type == KERN_PROC) { 2230 eproc = kmem_alloc(sizeof(*eproc), KM_SLEEP); 2231 kproc2 = NULL; 2232 } else { 2233 eproc = NULL; 2234 kproc2 = kmem_alloc(sizeof(*kproc2), KM_SLEEP); 2235 } 2236 marker = kmem_alloc(sizeof(*marker), KM_SLEEP); 2237 2238 mutex_enter(proc_lock); 2239 mmmbrains = false; 2240 for (p = LIST_FIRST(&allproc);; p = next) { 2241 if (p == NULL) { 2242 if (!mmmbrains) { 2243 p = LIST_FIRST(&zombproc); 2244 mmmbrains = true; 2245 } 2246 if (p == NULL) 2247 break; 2248 } 2249 next = LIST_NEXT(p, p_list); 2250 2251 /* 2252 * Skip embryonic processes. 2253 */ 2254 if (p->p_stat == SIDL) 2255 continue; 2256 2257 mutex_enter(p->p_lock); 2258 error = kauth_authorize_process(l->l_cred, 2259 KAUTH_PROCESS_CANSEE, p, 2260 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENTRY), NULL, NULL); 2261 if (error != 0) { 2262 mutex_exit(p->p_lock); 2263 continue; 2264 } 2265 2266 /* 2267 * TODO - make more efficient (see notes below). 2268 * do by session. 2269 */ 2270 switch (op) { 2271 case KERN_PROC_PID: 2272 /* could do this with just a lookup */ 2273 match = (p->p_pid == (pid_t)arg); 2274 break; 2275 2276 case KERN_PROC_PGRP: 2277 /* could do this by traversing pgrp */ 2278 match = (p->p_pgrp->pg_id == (pid_t)arg); 2279 break; 2280 2281 case KERN_PROC_SESSION: 2282 match = (p->p_session->s_sid == (pid_t)arg); 2283 break; 2284 2285 case KERN_PROC_TTY: 2286 match = true; 2287 if (arg == (int) KERN_PROC_TTY_REVOKE) { 2288 if ((p->p_lflag & PL_CONTROLT) == 0 || 2289 p->p_session->s_ttyp == NULL || 2290 p->p_session->s_ttyvp != NULL) { 2291 match = false; 2292 } 2293 } else if ((p->p_lflag & PL_CONTROLT) == 0 || 2294 p->p_session->s_ttyp == NULL) { 2295 if ((dev_t)arg != KERN_PROC_TTY_NODEV) { 2296 match = false; 2297 } 2298 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) { 2299 match = false; 2300 } 2301 break; 2302 2303 case KERN_PROC_UID: 2304 match = (kauth_cred_geteuid(p->p_cred) == (uid_t)arg); 2305 break; 2306 2307 case KERN_PROC_RUID: 2308 match = (kauth_cred_getuid(p->p_cred) == (uid_t)arg); 2309 break; 2310 2311 case KERN_PROC_GID: 2312 match = (kauth_cred_getegid(p->p_cred) == (uid_t)arg); 2313 break; 2314 2315 case KERN_PROC_RGID: 2316 match = (kauth_cred_getgid(p->p_cred) == (uid_t)arg); 2317 break; 2318 2319 case KERN_PROC_ALL: 2320 match = true; 2321 /* allow everything */ 2322 break; 2323 2324 default: 2325 error = EINVAL; 2326 mutex_exit(p->p_lock); 2327 goto cleanup; 2328 } 2329 if (!match) { 2330 mutex_exit(p->p_lock); 2331 continue; 2332 } 2333 2334 /* 2335 * Grab a hold on the process. 2336 */ 2337 if (mmmbrains) { 2338 zombie = true; 2339 } else { 2340 zombie = !rw_tryenter(&p->p_reflock, RW_READER); 2341 } 2342 if (zombie) { 2343 LIST_INSERT_AFTER(p, marker, p_list); 2344 } 2345 2346 if (type == KERN_PROC) { 2347 if (buflen >= sizeof(struct kinfo_proc)) { 2348 fill_eproc(p, eproc, zombie); 2349 mutex_exit(p->p_lock); 2350 mutex_exit(proc_lock); 2351 error = dcopyout(l, p, &dp->kp_proc, 2352 sizeof(struct proc)); 2353 mutex_enter(proc_lock); 2354 if (error) { 2355 goto bah; 2356 } 2357 error = dcopyout(l, eproc, &dp->kp_eproc, 2358 sizeof(*eproc)); 2359 if (error) { 2360 goto bah; 2361 } 2362 dp++; 2363 buflen -= sizeof(struct kinfo_proc); 2364 } else { 2365 mutex_exit(p->p_lock); 2366 } 2367 needed += sizeof(struct kinfo_proc); 2368 } else { /* KERN_PROC2 */ 2369 if (buflen >= elem_size && elem_count > 0) { 2370 fill_kproc2(p, kproc2, zombie); 2371 mutex_exit(p->p_lock); 2372 mutex_exit(proc_lock); 2373 /* 2374 * Copy out elem_size, but not larger than 2375 * the size of a struct kinfo_proc2. 2376 */ 2377 error = dcopyout(l, kproc2, dp2, 2378 min(sizeof(*kproc2), elem_size)); 2379 mutex_enter(proc_lock); 2380 if (error) { 2381 goto bah; 2382 } 2383 dp2 += elem_size; 2384 buflen -= elem_size; 2385 elem_count--; 2386 } else { 2387 mutex_exit(p->p_lock); 2388 } 2389 needed += elem_size; 2390 } 2391 2392 /* 2393 * Release reference to process. 2394 */ 2395 if (zombie) { 2396 next = LIST_NEXT(marker, p_list); 2397 LIST_REMOVE(marker, p_list); 2398 } else { 2399 rw_exit(&p->p_reflock); 2400 } 2401 } 2402 mutex_exit(proc_lock); 2403 2404 if (where != NULL) { 2405 if (type == KERN_PROC) 2406 *oldlenp = (char *)dp - where; 2407 else 2408 *oldlenp = dp2 - where; 2409 if (needed > *oldlenp) { 2410 error = ENOMEM; 2411 goto out; 2412 } 2413 } else { 2414 needed += KERN_PROCSLOP; 2415 *oldlenp = needed; 2416 } 2417 if (kproc2) 2418 kmem_free(kproc2, sizeof(*kproc2)); 2419 if (eproc) 2420 kmem_free(eproc, sizeof(*eproc)); 2421 if (marker) 2422 kmem_free(marker, sizeof(*marker)); 2423 sysctl_relock(); 2424 return 0; 2425 bah: 2426 if (zombie) 2427 LIST_REMOVE(marker, p_list); 2428 else 2429 rw_exit(&p->p_reflock); 2430 cleanup: 2431 mutex_exit(proc_lock); 2432 out: 2433 if (kproc2) 2434 kmem_free(kproc2, sizeof(*kproc2)); 2435 if (eproc) 2436 kmem_free(eproc, sizeof(*eproc)); 2437 if (marker) 2438 kmem_free(marker, sizeof(*marker)); 2439 sysctl_relock(); 2440 return error; 2441 } 2442 2443 /* 2444 * sysctl helper routine for kern.proc_args pseudo-subtree. 2445 */ 2446 static int 2447 sysctl_kern_proc_args(SYSCTLFN_ARGS) 2448 { 2449 struct ps_strings pss; 2450 struct proc *p; 2451 size_t len, i; 2452 struct uio auio; 2453 struct iovec aiov; 2454 pid_t pid; 2455 int nargv, type, error, argvlen; 2456 char *arg; 2457 char **argv = NULL; 2458 char *tmp; 2459 struct vmspace *vmspace; 2460 vaddr_t psstr_addr; 2461 vaddr_t offsetn; 2462 vaddr_t offsetv; 2463 2464 if (namelen == 1 && name[0] == CTL_QUERY) 2465 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2466 2467 if (newp != NULL || namelen != 2) 2468 return (EINVAL); 2469 pid = name[0]; 2470 type = name[1]; 2471 argv = NULL; 2472 argvlen = 0; 2473 2474 switch (type) { 2475 case KERN_PROC_ARGV: 2476 case KERN_PROC_NARGV: 2477 case KERN_PROC_ENV: 2478 case KERN_PROC_NENV: 2479 /* ok */ 2480 break; 2481 default: 2482 return (EINVAL); 2483 } 2484 2485 sysctl_unlock(); 2486 2487 /* check pid */ 2488 mutex_enter(proc_lock); 2489 if ((p = p_find(pid, PFIND_LOCKED)) == NULL) { 2490 error = EINVAL; 2491 goto out_locked; 2492 } 2493 mutex_enter(p->p_lock); 2494 2495 /* Check permission. */ 2496 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 2497 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2498 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ARGS), NULL, NULL); 2499 else if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) 2500 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2501 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENV), NULL, NULL); 2502 else 2503 error = EINVAL; /* XXXGCC */ 2504 if (error) { 2505 mutex_exit(p->p_lock); 2506 goto out_locked; 2507 } 2508 2509 if (oldp == NULL) { 2510 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 2511 *oldlenp = sizeof (int); 2512 else 2513 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 2514 error = 0; 2515 mutex_exit(p->p_lock); 2516 goto out_locked; 2517 } 2518 2519 /* 2520 * Zombies don't have a stack, so we can't read their psstrings. 2521 * System processes also don't have a user stack. 2522 */ 2523 if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) { 2524 error = EINVAL; 2525 mutex_exit(p->p_lock); 2526 goto out_locked; 2527 } 2528 2529 /* 2530 * Lock the process down in memory. 2531 */ 2532 psstr_addr = (vaddr_t)p->p_psstr; 2533 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) { 2534 offsetn = p->p_psnargv; 2535 offsetv = p->p_psargv; 2536 } else { 2537 offsetn = p->p_psnenv; 2538 offsetv = p->p_psenv; 2539 } 2540 vmspace = p->p_vmspace; 2541 uvmspace_addref(vmspace); 2542 mutex_exit(p->p_lock); 2543 mutex_exit(proc_lock); 2544 2545 /* 2546 * Allocate a temporary buffer to hold the arguments. 2547 */ 2548 arg = kmem_alloc(PAGE_SIZE, KM_SLEEP); 2549 2550 /* 2551 * Read in the ps_strings structure. 2552 */ 2553 aiov.iov_base = &pss; 2554 aiov.iov_len = sizeof(pss); 2555 auio.uio_iov = &aiov; 2556 auio.uio_iovcnt = 1; 2557 auio.uio_offset = psstr_addr; 2558 auio.uio_resid = sizeof(pss); 2559 auio.uio_rw = UIO_READ; 2560 UIO_SETUP_SYSSPACE(&auio); 2561 error = uvm_io(&vmspace->vm_map, &auio); 2562 if (error) 2563 goto done; 2564 2565 memcpy(&nargv, (char *)&pss + offsetn, sizeof(nargv)); 2566 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 2567 error = dcopyout(l, &nargv, oldp, sizeof(nargv)); 2568 *oldlenp = sizeof(nargv); 2569 goto done; 2570 } 2571 /* 2572 * Now read the address of the argument vector. 2573 */ 2574 switch (type) { 2575 case KERN_PROC_ARGV: 2576 /* FALLTHROUGH */ 2577 case KERN_PROC_ENV: 2578 memcpy(&tmp, (char *)&pss + offsetv, sizeof(tmp)); 2579 break; 2580 default: 2581 error = EINVAL; 2582 goto done; 2583 } 2584 2585 #ifdef COMPAT_NETBSD32 2586 if (p->p_flag & PK_32) 2587 len = sizeof(netbsd32_charp) * nargv; 2588 else 2589 #endif 2590 len = sizeof(char *) * nargv; 2591 2592 if ((argvlen = len) != 0) 2593 argv = kmem_alloc(len, KM_SLEEP); 2594 2595 aiov.iov_base = argv; 2596 aiov.iov_len = len; 2597 auio.uio_iov = &aiov; 2598 auio.uio_iovcnt = 1; 2599 auio.uio_offset = (off_t)(unsigned long)tmp; 2600 auio.uio_resid = len; 2601 auio.uio_rw = UIO_READ; 2602 UIO_SETUP_SYSSPACE(&auio); 2603 error = uvm_io(&vmspace->vm_map, &auio); 2604 if (error) 2605 goto done; 2606 2607 /* 2608 * Now copy each string. 2609 */ 2610 len = 0; /* bytes written to user buffer */ 2611 for (i = 0; i < nargv; i++) { 2612 int finished = 0; 2613 vaddr_t base; 2614 size_t xlen; 2615 int j; 2616 2617 #ifdef COMPAT_NETBSD32 2618 if (p->p_flag & PK_32) { 2619 netbsd32_charp *argv32; 2620 2621 argv32 = (netbsd32_charp *)argv; 2622 base = (vaddr_t)NETBSD32PTR64(argv32[i]); 2623 } else 2624 #endif 2625 base = (vaddr_t)argv[i]; 2626 2627 /* 2628 * The program has messed around with its arguments, 2629 * possibly deleting some, and replacing them with 2630 * NULL's. Treat this as the last argument and not 2631 * a failure. 2632 */ 2633 if (base == 0) 2634 break; 2635 2636 while (!finished) { 2637 xlen = PAGE_SIZE - (base & PAGE_MASK); 2638 2639 aiov.iov_base = arg; 2640 aiov.iov_len = PAGE_SIZE; 2641 auio.uio_iov = &aiov; 2642 auio.uio_iovcnt = 1; 2643 auio.uio_offset = base; 2644 auio.uio_resid = xlen; 2645 auio.uio_rw = UIO_READ; 2646 UIO_SETUP_SYSSPACE(&auio); 2647 error = uvm_io(&vmspace->vm_map, &auio); 2648 if (error) 2649 goto done; 2650 2651 /* Look for the end of the string */ 2652 for (j = 0; j < xlen; j++) { 2653 if (arg[j] == '\0') { 2654 xlen = j + 1; 2655 finished = 1; 2656 break; 2657 } 2658 } 2659 2660 /* Check for user buffer overflow */ 2661 if (len + xlen > *oldlenp) { 2662 finished = 1; 2663 if (len > *oldlenp) 2664 xlen = 0; 2665 else 2666 xlen = *oldlenp - len; 2667 } 2668 2669 /* Copyout the page */ 2670 error = dcopyout(l, arg, (char *)oldp + len, xlen); 2671 if (error) 2672 goto done; 2673 2674 len += xlen; 2675 base += xlen; 2676 } 2677 } 2678 *oldlenp = len; 2679 2680 done: 2681 if (argvlen != 0) 2682 kmem_free(argv, argvlen); 2683 uvmspace_free(vmspace); 2684 kmem_free(arg, PAGE_SIZE); 2685 sysctl_relock(); 2686 return error; 2687 2688 out_locked: 2689 mutex_exit(proc_lock); 2690 sysctl_relock(); 2691 return error; 2692 } 2693 2694 static int 2695 sysctl_security_setidcore(SYSCTLFN_ARGS) 2696 { 2697 int newsize, error; 2698 struct sysctlnode node; 2699 2700 node = *rnode; 2701 node.sysctl_data = &newsize; 2702 newsize = *(int *)rnode->sysctl_data; 2703 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2704 if (error || newp == NULL) 2705 return error; 2706 2707 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2708 0, NULL, NULL, NULL)) 2709 return (EPERM); 2710 2711 *(int *)rnode->sysctl_data = newsize; 2712 2713 return 0; 2714 } 2715 2716 static int 2717 sysctl_security_setidcorename(SYSCTLFN_ARGS) 2718 { 2719 int error; 2720 char *newsetidcorename; 2721 struct sysctlnode node; 2722 2723 newsetidcorename = PNBUF_GET(); 2724 node = *rnode; 2725 node.sysctl_data = newsetidcorename; 2726 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 2727 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2728 if (error || newp == NULL) { 2729 goto out; 2730 } 2731 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2732 0, NULL, NULL, NULL)) { 2733 error = EPERM; 2734 goto out; 2735 } 2736 if (strlen(newsetidcorename) == 0) { 2737 error = EINVAL; 2738 goto out; 2739 } 2740 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 2741 out: 2742 PNBUF_PUT(newsetidcorename); 2743 return error; 2744 } 2745 2746 /* 2747 * sysctl helper routine for kern.cp_id node. Maps cpus to their 2748 * cpuids. 2749 */ 2750 static int 2751 sysctl_kern_cpid(SYSCTLFN_ARGS) 2752 { 2753 struct sysctlnode node = *rnode; 2754 uint64_t *cp_id = NULL; 2755 int error, n = ncpu; 2756 struct cpu_info *ci; 2757 CPU_INFO_ITERATOR cii; 2758 2759 /* 2760 * Here you may either retrieve a single cpu id or the whole 2761 * set. The size you get back when probing depends on what 2762 * you ask for. 2763 */ 2764 switch (namelen) { 2765 case 0: 2766 node.sysctl_size = n * sizeof(uint64_t); 2767 n = -2; /* ALL */ 2768 break; 2769 case 1: 2770 if (name[0] < 0 || name[0] >= n) 2771 return (ENOENT); /* ENOSUCHPROCESSOR */ 2772 node.sysctl_size = sizeof(uint64_t); 2773 n = name[0]; 2774 /* 2775 * adjust these so that sysctl_lookup() will be happy 2776 */ 2777 name++; 2778 namelen--; 2779 break; 2780 default: 2781 return (EINVAL); 2782 } 2783 2784 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 2785 if (cp_id == NULL) 2786 return (ENOMEM); 2787 node.sysctl_data = cp_id; 2788 memset(cp_id, 0, node.sysctl_size); 2789 2790 for (CPU_INFO_FOREACH(cii, ci)) { 2791 if (n <= 0) 2792 cp_id[0] = cpu_index(ci); 2793 /* 2794 * if a specific processor was requested and we just 2795 * did it, we're done here 2796 */ 2797 if (n == 0) 2798 break; 2799 /* 2800 * if doing "all", skip to next cp_id slot for next processor 2801 */ 2802 if (n == -2) 2803 cp_id++; 2804 /* 2805 * if we're doing a specific processor, we're one 2806 * processor closer 2807 */ 2808 if (n > 0) 2809 n--; 2810 } 2811 2812 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2813 kmem_free(node.sysctl_data, node.sysctl_size); 2814 return (error); 2815 } 2816 2817 /* 2818 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 2819 * calculate on the fly taking into account integer overflow and the 2820 * current wired count. 2821 */ 2822 static int 2823 sysctl_hw_usermem(SYSCTLFN_ARGS) 2824 { 2825 u_int ui; 2826 u_quad_t uq; 2827 struct sysctlnode node; 2828 2829 node = *rnode; 2830 switch (rnode->sysctl_num) { 2831 case HW_USERMEM: 2832 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 2833 ui = UINT_MAX; 2834 else 2835 ui *= PAGE_SIZE; 2836 node.sysctl_data = &ui; 2837 break; 2838 case HW_USERMEM64: 2839 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2840 node.sysctl_data = &uq; 2841 break; 2842 default: 2843 return (EINVAL); 2844 } 2845 2846 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2847 } 2848 2849 /* 2850 * sysctl helper routine for kern.cnmagic node. Pulls the old value 2851 * out, encoded, and stuffs the new value in for decoding. 2852 */ 2853 static int 2854 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2855 { 2856 char magic[CNS_LEN]; 2857 int error; 2858 struct sysctlnode node; 2859 2860 if (oldp) 2861 cn_get_magic(magic, CNS_LEN); 2862 node = *rnode; 2863 node.sysctl_data = &magic[0]; 2864 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2865 if (error || newp == NULL) 2866 return (error); 2867 2868 return (cn_set_magic(magic)); 2869 } 2870 2871 /* 2872 * ******************************************************************** 2873 * section 3: public helper routines that are used for more than one 2874 * node 2875 * ******************************************************************** 2876 */ 2877 2878 /* 2879 * sysctl helper routine for the kern.root_device node and some ports' 2880 * machdep.root_device nodes. 2881 */ 2882 int 2883 sysctl_root_device(SYSCTLFN_ARGS) 2884 { 2885 struct sysctlnode node; 2886 2887 node = *rnode; 2888 node.sysctl_data = root_device->dv_xname; 2889 node.sysctl_size = strlen(device_xname(root_device)) + 1; 2890 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2891 } 2892 2893 /* 2894 * sysctl helper routine for kern.consdev, dependent on the current 2895 * state of the console. Also used for machdep.console_device on some 2896 * ports. 2897 */ 2898 int 2899 sysctl_consdev(SYSCTLFN_ARGS) 2900 { 2901 dev_t consdev; 2902 struct sysctlnode node; 2903 2904 if (cn_tab != NULL) 2905 consdev = cn_tab->cn_dev; 2906 else 2907 consdev = NODEV; 2908 node = *rnode; 2909 node.sysctl_data = &consdev; 2910 node.sysctl_size = sizeof(consdev); 2911 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2912 } 2913 2914 /* 2915 * ******************************************************************** 2916 * section 4: support for some helpers 2917 * ******************************************************************** 2918 */ 2919 /* 2920 * Find the most ``active'' lwp of a process and return it for ps display 2921 * purposes 2922 */ 2923 static struct lwp * 2924 proc_active_lwp(struct proc *p) 2925 { 2926 static const int ostat[] = { 2927 0, 2928 2, /* LSIDL */ 2929 6, /* LSRUN */ 2930 5, /* LSSLEEP */ 2931 4, /* LSSTOP */ 2932 0, /* LSZOMB */ 2933 1, /* LSDEAD */ 2934 7, /* LSONPROC */ 2935 3 /* LSSUSPENDED */ 2936 }; 2937 2938 struct lwp *l, *lp = NULL; 2939 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 2940 KASSERT(l->l_stat >= 0 && l->l_stat < __arraycount(ostat)); 2941 if (lp == NULL || 2942 ostat[l->l_stat] > ostat[lp->l_stat] || 2943 (ostat[l->l_stat] == ostat[lp->l_stat] && 2944 l->l_cpticks > lp->l_cpticks)) { 2945 lp = l; 2946 continue; 2947 } 2948 } 2949 return lp; 2950 } 2951 2952 2953 /* 2954 * Fill in a kinfo_proc2 structure for the specified process. 2955 */ 2956 static void 2957 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki, bool zombie) 2958 { 2959 struct tty *tp; 2960 struct lwp *l, *l2; 2961 struct timeval ut, st, rt; 2962 sigset_t ss1, ss2; 2963 struct rusage ru; 2964 struct vmspace *vm; 2965 2966 KASSERT(mutex_owned(proc_lock)); 2967 KASSERT(mutex_owned(p->p_lock)); 2968 2969 sigemptyset(&ss1); 2970 sigemptyset(&ss2); 2971 memset(ki, 0, sizeof(*ki)); 2972 2973 ki->p_paddr = PTRTOUINT64(p); 2974 ki->p_fd = PTRTOUINT64(p->p_fd); 2975 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2976 ki->p_stats = PTRTOUINT64(p->p_stats); 2977 ki->p_limit = PTRTOUINT64(p->p_limit); 2978 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2979 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2980 ki->p_sess = PTRTOUINT64(p->p_session); 2981 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2982 ki->p_ru = PTRTOUINT64(&p->p_stats->p_ru); 2983 ki->p_eflag = 0; 2984 ki->p_exitsig = p->p_exitsig; 2985 ki->p_flag = sysctl_map_flags(sysctl_flagmap, p->p_flag); 2986 ki->p_flag |= sysctl_map_flags(sysctl_sflagmap, p->p_sflag); 2987 ki->p_flag |= sysctl_map_flags(sysctl_slflagmap, p->p_slflag); 2988 ki->p_flag |= sysctl_map_flags(sysctl_lflagmap, p->p_lflag); 2989 ki->p_flag |= sysctl_map_flags(sysctl_stflagmap, p->p_stflag); 2990 ki->p_pid = p->p_pid; 2991 if (p->p_pptr) 2992 ki->p_ppid = p->p_pptr->p_pid; 2993 else 2994 ki->p_ppid = 0; 2995 ki->p_uid = kauth_cred_geteuid(p->p_cred); 2996 ki->p_ruid = kauth_cred_getuid(p->p_cred); 2997 ki->p_gid = kauth_cred_getegid(p->p_cred); 2998 ki->p_rgid = kauth_cred_getgid(p->p_cred); 2999 ki->p_svuid = kauth_cred_getsvuid(p->p_cred); 3000 ki->p_svgid = kauth_cred_getsvgid(p->p_cred); 3001 ki->p_ngroups = kauth_cred_ngroups(p->p_cred); 3002 kauth_cred_getgroups(p->p_cred, ki->p_groups, 3003 min(ki->p_ngroups, sizeof(ki->p_groups) / sizeof(ki->p_groups[0])), 3004 UIO_SYSSPACE); 3005 3006 ki->p_uticks = p->p_uticks; 3007 ki->p_sticks = p->p_sticks; 3008 ki->p_iticks = p->p_iticks; 3009 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 3010 ki->p_tracep = PTRTOUINT64(p->p_tracep); 3011 ki->p_traceflag = p->p_traceflag; 3012 3013 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 3014 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 3015 3016 ki->p_cpticks = 0; 3017 ki->p_pctcpu = p->p_pctcpu; 3018 ki->p_estcpu = 0; 3019 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 3020 ki->p_realstat = p->p_stat; 3021 ki->p_nice = p->p_nice; 3022 ki->p_xstat = p->p_xstat; 3023 ki->p_acflag = p->p_acflag; 3024 3025 strncpy(ki->p_comm, p->p_comm, 3026 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 3027 strncpy(ki->p_ename, p->p_emul->e_name, sizeof(ki->p_ename)); 3028 3029 ki->p_nlwps = p->p_nlwps; 3030 ki->p_realflag = ki->p_flag; 3031 3032 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3033 vm = p->p_vmspace; 3034 ki->p_vm_rssize = vm_resident_count(vm); 3035 ki->p_vm_tsize = vm->vm_tsize; 3036 ki->p_vm_dsize = vm->vm_dsize; 3037 ki->p_vm_ssize = vm->vm_ssize; 3038 3039 /* Pick the primary (first) LWP */ 3040 l = proc_active_lwp(p); 3041 KASSERT(l != NULL); 3042 lwp_lock(l); 3043 ki->p_nrlwps = p->p_nrlwps; 3044 ki->p_forw = 0; 3045 ki->p_back = 0; 3046 ki->p_addr = PTRTOUINT64(l->l_addr); 3047 ki->p_stat = l->l_stat; 3048 ki->p_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3049 ki->p_swtime = l->l_swtime; 3050 ki->p_slptime = l->l_slptime; 3051 if (l->l_stat == LSONPROC) 3052 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3053 else 3054 ki->p_schedflags = 0; 3055 ki->p_holdcnt = l->l_holdcnt; 3056 ki->p_priority = lwp_eprio(l); 3057 ki->p_usrpri = l->l_priority; 3058 if (l->l_wchan) 3059 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 3060 ki->p_wchan = PTRTOUINT64(l->l_wchan); 3061 ki->p_cpuid = cpu_index(l->l_cpu); 3062 lwp_unlock(l); 3063 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 3064 /* This is hardly correct, but... */ 3065 sigplusset(&l->l_sigpend.sp_set, &ss1); 3066 sigplusset(&l->l_sigmask, &ss2); 3067 ki->p_cpticks += l->l_cpticks; 3068 ki->p_pctcpu += l->l_pctcpu; 3069 ki->p_estcpu += l->l_estcpu; 3070 } 3071 } 3072 sigplusset(&p->p_sigpend.sp_set, &ss2); 3073 memcpy(&ki->p_siglist, &ss1, sizeof(ki_sigset_t)); 3074 memcpy(&ki->p_sigmask, &ss2, sizeof(ki_sigset_t)); 3075 3076 if (p->p_session != NULL) { 3077 ki->p_sid = p->p_session->s_sid; 3078 ki->p__pgid = p->p_pgrp->pg_id; 3079 if (p->p_session->s_ttyvp) 3080 ki->p_eflag |= EPROC_CTTY; 3081 if (SESS_LEADER(p)) 3082 ki->p_eflag |= EPROC_SLEADER; 3083 strncpy(ki->p_login, p->p_session->s_login, 3084 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 3085 ki->p_jobc = p->p_pgrp->pg_jobc; 3086 if ((p->p_lflag & PL_CONTROLT) && (tp = p->p_session->s_ttyp)) { 3087 ki->p_tdev = tp->t_dev; 3088 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3089 ki->p_tsess = PTRTOUINT64(tp->t_session); 3090 } else { 3091 ki->p_tdev = (int32_t)NODEV; 3092 } 3093 } 3094 3095 if (!P_ZOMBIE(p) && !zombie) { 3096 ki->p_uvalid = 1; 3097 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 3098 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 3099 3100 calcru(p, &ut, &st, NULL, &rt); 3101 ki->p_rtime_sec = rt.tv_sec; 3102 ki->p_rtime_usec = rt.tv_usec; 3103 ki->p_uutime_sec = ut.tv_sec; 3104 ki->p_uutime_usec = ut.tv_usec; 3105 ki->p_ustime_sec = st.tv_sec; 3106 ki->p_ustime_usec = st.tv_usec; 3107 3108 memcpy(&ru, &p->p_stats->p_ru, sizeof(ru)); 3109 ki->p_uru_nvcsw = 0; 3110 ki->p_uru_nivcsw = 0; 3111 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 3112 ki->p_uru_nvcsw += (l2->l_ncsw - l2->l_nivcsw); 3113 ki->p_uru_nivcsw += l2->l_nivcsw; 3114 ruadd(&ru, &l2->l_ru); 3115 } 3116 ki->p_uru_maxrss = ru.ru_maxrss; 3117 ki->p_uru_ixrss = ru.ru_ixrss; 3118 ki->p_uru_idrss = ru.ru_idrss; 3119 ki->p_uru_isrss = ru.ru_isrss; 3120 ki->p_uru_minflt = ru.ru_minflt; 3121 ki->p_uru_majflt = ru.ru_majflt; 3122 ki->p_uru_nswap = ru.ru_nswap; 3123 ki->p_uru_inblock = ru.ru_inblock; 3124 ki->p_uru_oublock = ru.ru_oublock; 3125 ki->p_uru_msgsnd = ru.ru_msgsnd; 3126 ki->p_uru_msgrcv = ru.ru_msgrcv; 3127 ki->p_uru_nsignals = ru.ru_nsignals; 3128 3129 timeradd(&p->p_stats->p_cru.ru_utime, 3130 &p->p_stats->p_cru.ru_stime, &ut); 3131 ki->p_uctime_sec = ut.tv_sec; 3132 ki->p_uctime_usec = ut.tv_usec; 3133 } 3134 } 3135 3136 /* 3137 * Fill in a kinfo_lwp structure for the specified lwp. 3138 */ 3139 static void 3140 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 3141 { 3142 struct proc *p = l->l_proc; 3143 struct timeval tv; 3144 3145 KASSERT(lwp_locked(l, NULL)); 3146 3147 kl->l_forw = 0; 3148 kl->l_back = 0; 3149 kl->l_laddr = PTRTOUINT64(l); 3150 kl->l_addr = PTRTOUINT64(l->l_addr); 3151 kl->l_stat = l->l_stat; 3152 kl->l_lid = l->l_lid; 3153 kl->l_flag = sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 3154 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3155 3156 kl->l_swtime = l->l_swtime; 3157 kl->l_slptime = l->l_slptime; 3158 if (l->l_stat == LSONPROC) 3159 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3160 else 3161 kl->l_schedflags = 0; 3162 kl->l_holdcnt = l->l_holdcnt; 3163 kl->l_priority = lwp_eprio(l); 3164 kl->l_usrpri = l->l_priority; 3165 if (l->l_wchan) 3166 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 3167 kl->l_wchan = PTRTOUINT64(l->l_wchan); 3168 kl->l_cpuid = cpu_index(l->l_cpu); 3169 bintime2timeval(&l->l_rtime, &tv); 3170 kl->l_rtime_sec = tv.tv_sec; 3171 kl->l_rtime_usec = tv.tv_usec; 3172 kl->l_cpticks = l->l_cpticks; 3173 kl->l_pctcpu = l->l_pctcpu; 3174 kl->l_pid = p->p_pid; 3175 if (l->l_name == NULL) 3176 kl->l_name[0] = '\0'; 3177 else 3178 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 3179 } 3180 3181 /* 3182 * Fill in an eproc structure for the specified process. 3183 */ 3184 void 3185 fill_eproc(struct proc *p, struct eproc *ep, bool zombie) 3186 { 3187 struct tty *tp; 3188 struct lwp *l; 3189 3190 KASSERT(mutex_owned(proc_lock)); 3191 KASSERT(mutex_owned(p->p_lock)); 3192 3193 memset(ep, 0, sizeof(*ep)); 3194 3195 ep->e_paddr = p; 3196 ep->e_sess = p->p_session; 3197 if (p->p_cred) { 3198 kauth_cred_topcred(p->p_cred, &ep->e_pcred); 3199 kauth_cred_toucred(p->p_cred, &ep->e_ucred); 3200 } 3201 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3202 struct vmspace *vm = p->p_vmspace; 3203 3204 ep->e_vm.vm_rssize = vm_resident_count(vm); 3205 ep->e_vm.vm_tsize = vm->vm_tsize; 3206 ep->e_vm.vm_dsize = vm->vm_dsize; 3207 ep->e_vm.vm_ssize = vm->vm_ssize; 3208 3209 /* Pick the primary (first) LWP */ 3210 l = proc_active_lwp(p); 3211 KASSERT(l != NULL); 3212 lwp_lock(l); 3213 if (l->l_wchan) 3214 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 3215 lwp_unlock(l); 3216 } 3217 if (p->p_pptr) 3218 ep->e_ppid = p->p_pptr->p_pid; 3219 if (p->p_pgrp && p->p_session) { 3220 ep->e_pgid = p->p_pgrp->pg_id; 3221 ep->e_jobc = p->p_pgrp->pg_jobc; 3222 ep->e_sid = p->p_session->s_sid; 3223 if ((p->p_lflag & PL_CONTROLT) && 3224 (tp = ep->e_sess->s_ttyp)) { 3225 ep->e_tdev = tp->t_dev; 3226 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3227 ep->e_tsess = tp->t_session; 3228 } else 3229 ep->e_tdev = (uint32_t)NODEV; 3230 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 3231 if (SESS_LEADER(p)) 3232 ep->e_flag |= EPROC_SLEADER; 3233 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 3234 } 3235 ep->e_xsize = ep->e_xrssize = 0; 3236 ep->e_xccount = ep->e_xswrss = 0; 3237 } 3238 3239 u_int 3240 sysctl_map_flags(const u_int *map, u_int word) 3241 { 3242 u_int rv; 3243 3244 for (rv = 0; *map != 0; map += 2) 3245 if ((word & map[0]) != 0) 3246 rv |= map[1]; 3247 3248 return rv; 3249 } 3250
Indexes created Tue Sep 23 14:10:03 GMT 2025