init_sysctl.c revision 1.149.4.8
1 /* $NetBSD: init_sysctl.c,v 1.149.4.8 2011/03/07 17:08:28 snj 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 1.149.4.8 2011/03/07 17:08:28 snj Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_compat_netbsd32.h" 37 #include "opt_sa.h" 38 #include "pty.h" 39 #include "rnd.h" 40 41 #include <sys/types.h> 42 #include <sys/param.h> 43 #include <sys/sysctl.h> 44 #include <sys/cpu.h> 45 #include <sys/errno.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/unistd.h> 49 #include <sys/disklabel.h> 50 #include <sys/rnd.h> 51 #include <sys/vnode.h> 52 #include <sys/mount.h> 53 #include <sys/namei.h> 54 #include <sys/msgbuf.h> 55 #include <dev/cons.h> 56 #include <sys/socketvar.h> 57 #include <sys/file.h> 58 #include <sys/filedesc.h> 59 #include <sys/tty.h> 60 #include <sys/malloc.h> 61 #include <sys/resource.h> 62 #include <sys/resourcevar.h> 63 #include <sys/exec.h> 64 #include <sys/conf.h> 65 #include <sys/device.h> 66 #include <sys/stat.h> 67 #include <sys/kauth.h> 68 #include <sys/ktrace.h> 69 #include <sys/ksem.h> 70 71 #include <miscfs/specfs/specdev.h> 72 73 #ifdef COMPAT_NETBSD32 74 #include <compat/netbsd32/netbsd32.h> 75 #endif 76 77 #ifdef KERN_SA 78 #include <sys/sa.h> 79 #endif 80 81 #include <sys/cpu.h> 82 83 int posix_semaphores; 84 int security_setidcore_dump; 85 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 86 uid_t security_setidcore_owner = 0; 87 gid_t security_setidcore_group = 0; 88 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 89 90 static const u_int sysctl_flagmap[] = { 91 PK_ADVLOCK, P_ADVLOCK, 92 PK_EXEC, P_EXEC, 93 PK_NOCLDWAIT, P_NOCLDWAIT, 94 PK_32, P_32, 95 PK_CLDSIGIGN, P_CLDSIGIGN, 96 PK_SUGID, P_SUGID, 97 0 98 }; 99 100 static const u_int sysctl_sflagmap[] = { 101 PS_NOCLDSTOP, P_NOCLDSTOP, 102 PS_WEXIT, P_WEXIT, 103 PS_STOPFORK, P_STOPFORK, 104 PS_STOPEXEC, P_STOPEXEC, 105 PS_STOPEXIT, P_STOPEXIT, 106 0 107 }; 108 109 static const u_int sysctl_slflagmap[] = { 110 PSL_TRACED, P_TRACED, 111 PSL_FSTRACE, P_FSTRACE, 112 PSL_CHTRACED, P_CHTRACED, 113 PSL_SYSCALL, P_SYSCALL, 114 0 115 }; 116 117 static const u_int sysctl_lflagmap[] = { 118 PL_CONTROLT, P_CONTROLT, 119 PL_PPWAIT, P_PPWAIT, 120 0 121 }; 122 123 static const u_int sysctl_stflagmap[] = { 124 PST_PROFIL, P_PROFIL, 125 0 126 127 }; 128 129 static const u_int sysctl_lwpflagmap[] = { 130 LW_INMEM, P_INMEM, 131 LW_SINTR, P_SINTR, 132 LW_SYSTEM, P_SYSTEM, 133 LW_SA, P_SA, /* WRS ??? */ 134 0 135 }; 136 137 static const u_int sysctl_lwpprflagmap[] = { 138 LPR_DETACHED, L_DETACHED, 139 0 140 }; 141 142 /* 143 * try over estimating by 5 procs/lwps 144 */ 145 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 146 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 147 148 static int dcopyout(struct lwp *, const void *, void *, size_t); 149 150 static int 151 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 152 { 153 int error; 154 155 error = copyout(kaddr, uaddr, len); 156 ktrmibio(-1, UIO_READ, uaddr, len, error); 157 158 return error; 159 } 160 161 #ifdef DIAGNOSTIC 162 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 163 #endif 164 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 165 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 166 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 167 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 168 static int sysctl_setlen(SYSCTLFN_PROTO); 169 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 170 static int sysctl_kern_file(SYSCTLFN_PROTO); 171 static int sysctl_msgbuf(SYSCTLFN_PROTO); 172 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 173 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 174 #if NPTY > 0 175 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 176 #endif /* NPTY > 0 */ 177 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 178 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 179 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 180 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 181 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 182 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 183 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 184 static int sysctl_kern_file2(SYSCTLFN_PROTO); 185 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 186 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 187 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 188 static int sysctl_doeproc(SYSCTLFN_PROTO); 189 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 190 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 191 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 192 193 static u_int sysctl_map_flags(const u_int *, u_int); 194 static void fill_kproc2(struct proc *, struct kinfo_proc2 *, bool); 195 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 196 static void fill_file(struct kinfo_file *, const file_t *, const fdfile_t *, 197 int, pid_t); 198 199 /* 200 * ******************************************************************** 201 * section 1: setup routines 202 * ******************************************************************** 203 * These functions are stuffed into a link set for sysctl setup 204 * functions. They're never called or referenced from anywhere else. 205 * ******************************************************************** 206 */ 207 208 /* 209 * sets up the base nodes... 210 */ 211 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 212 { 213 214 sysctl_createv(clog, 0, NULL, NULL, 215 CTLFLAG_PERMANENT, 216 CTLTYPE_NODE, "kern", 217 SYSCTL_DESCR("High kernel"), 218 NULL, 0, NULL, 0, 219 CTL_KERN, CTL_EOL); 220 sysctl_createv(clog, 0, NULL, NULL, 221 CTLFLAG_PERMANENT, 222 CTLTYPE_NODE, "vm", 223 SYSCTL_DESCR("Virtual memory"), 224 NULL, 0, NULL, 0, 225 CTL_VM, CTL_EOL); 226 sysctl_createv(clog, 0, NULL, NULL, 227 CTLFLAG_PERMANENT, 228 CTLTYPE_NODE, "vfs", 229 SYSCTL_DESCR("Filesystem"), 230 NULL, 0, NULL, 0, 231 CTL_VFS, CTL_EOL); 232 sysctl_createv(clog, 0, NULL, NULL, 233 CTLFLAG_PERMANENT, 234 CTLTYPE_NODE, "net", 235 SYSCTL_DESCR("Networking"), 236 NULL, 0, NULL, 0, 237 CTL_NET, CTL_EOL); 238 sysctl_createv(clog, 0, NULL, NULL, 239 CTLFLAG_PERMANENT, 240 CTLTYPE_NODE, "debug", 241 SYSCTL_DESCR("Debugging"), 242 NULL, 0, NULL, 0, 243 CTL_DEBUG, CTL_EOL); 244 sysctl_createv(clog, 0, NULL, NULL, 245 CTLFLAG_PERMANENT, 246 CTLTYPE_NODE, "hw", 247 SYSCTL_DESCR("Generic CPU, I/O"), 248 NULL, 0, NULL, 0, 249 CTL_HW, CTL_EOL); 250 sysctl_createv(clog, 0, NULL, NULL, 251 CTLFLAG_PERMANENT, 252 CTLTYPE_NODE, "machdep", 253 SYSCTL_DESCR("Machine dependent"), 254 NULL, 0, NULL, 0, 255 CTL_MACHDEP, CTL_EOL); 256 /* 257 * this node is inserted so that the sysctl nodes in libc can 258 * operate. 259 */ 260 sysctl_createv(clog, 0, NULL, NULL, 261 CTLFLAG_PERMANENT, 262 CTLTYPE_NODE, "user", 263 SYSCTL_DESCR("User-level"), 264 NULL, 0, NULL, 0, 265 CTL_USER, CTL_EOL); 266 sysctl_createv(clog, 0, NULL, NULL, 267 CTLFLAG_PERMANENT, 268 CTLTYPE_NODE, "ddb", 269 SYSCTL_DESCR("In-kernel debugger"), 270 NULL, 0, NULL, 0, 271 CTL_DDB, CTL_EOL); 272 sysctl_createv(clog, 0, NULL, NULL, 273 CTLFLAG_PERMANENT, 274 CTLTYPE_NODE, "proc", 275 SYSCTL_DESCR("Per-process"), 276 NULL, 0, NULL, 0, 277 CTL_PROC, CTL_EOL); 278 sysctl_createv(clog, 0, NULL, NULL, 279 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 280 CTLTYPE_NODE, "vendor", 281 SYSCTL_DESCR("Vendor specific"), 282 NULL, 0, NULL, 0, 283 CTL_VENDOR, CTL_EOL); 284 sysctl_createv(clog, 0, NULL, NULL, 285 CTLFLAG_PERMANENT, 286 CTLTYPE_NODE, "emul", 287 SYSCTL_DESCR("Emulation settings"), 288 NULL, 0, NULL, 0, 289 CTL_EMUL, CTL_EOL); 290 sysctl_createv(clog, 0, NULL, NULL, 291 CTLFLAG_PERMANENT, 292 CTLTYPE_NODE, "security", 293 SYSCTL_DESCR("Security"), 294 NULL, 0, NULL, 0, 295 CTL_SECURITY, CTL_EOL); 296 } 297 298 /* 299 * this setup routine is a replacement for kern_sysctl() 300 */ 301 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 302 { 303 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 304 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 305 extern int dumponpanic; /* defined in kern/subr_prf.c */ 306 const struct sysctlnode *rnode; 307 308 sysctl_createv(clog, 0, NULL, NULL, 309 CTLFLAG_PERMANENT, 310 CTLTYPE_NODE, "kern", NULL, 311 NULL, 0, NULL, 0, 312 CTL_KERN, CTL_EOL); 313 314 sysctl_createv(clog, 0, NULL, NULL, 315 CTLFLAG_PERMANENT, 316 CTLTYPE_STRING, "ostype", 317 SYSCTL_DESCR("Operating system type"), 318 NULL, 0, &ostype, 0, 319 CTL_KERN, KERN_OSTYPE, CTL_EOL); 320 sysctl_createv(clog, 0, NULL, NULL, 321 CTLFLAG_PERMANENT, 322 CTLTYPE_STRING, "osrelease", 323 SYSCTL_DESCR("Operating system release"), 324 NULL, 0, &osrelease, 0, 325 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 326 sysctl_createv(clog, 0, NULL, NULL, 327 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 328 CTLTYPE_INT, "osrevision", 329 SYSCTL_DESCR("Operating system revision"), 330 NULL, __NetBSD_Version__, NULL, 0, 331 CTL_KERN, KERN_OSREV, CTL_EOL); 332 sysctl_createv(clog, 0, NULL, NULL, 333 CTLFLAG_PERMANENT, 334 CTLTYPE_STRING, "version", 335 SYSCTL_DESCR("Kernel version"), 336 NULL, 0, &version, 0, 337 CTL_KERN, KERN_VERSION, CTL_EOL); 338 sysctl_createv(clog, 0, NULL, NULL, 339 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 340 CTLTYPE_INT, "maxvnodes", 341 SYSCTL_DESCR("Maximum number of vnodes"), 342 sysctl_kern_maxvnodes, 0, NULL, 0, 343 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 344 sysctl_createv(clog, 0, NULL, NULL, 345 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 346 CTLTYPE_INT, "maxproc", 347 SYSCTL_DESCR("Maximum number of simultaneous processes"), 348 sysctl_kern_maxproc, 0, NULL, 0, 349 CTL_KERN, KERN_MAXPROC, CTL_EOL); 350 sysctl_createv(clog, 0, NULL, NULL, 351 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 352 CTLTYPE_INT, "maxfiles", 353 SYSCTL_DESCR("Maximum number of open files"), 354 NULL, 0, &maxfiles, 0, 355 CTL_KERN, KERN_MAXFILES, CTL_EOL); 356 sysctl_createv(clog, 0, NULL, NULL, 357 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 358 CTLTYPE_INT, "argmax", 359 SYSCTL_DESCR("Maximum number of bytes of arguments to " 360 "execve(2)"), 361 NULL, ARG_MAX, NULL, 0, 362 CTL_KERN, KERN_ARGMAX, CTL_EOL); 363 sysctl_createv(clog, 0, NULL, NULL, 364 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 365 CTLTYPE_STRING, "hostname", 366 SYSCTL_DESCR("System hostname"), 367 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 368 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 369 sysctl_createv(clog, 0, NULL, NULL, 370 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 371 CTLTYPE_INT, "hostid", 372 SYSCTL_DESCR("System host ID number"), 373 sysctl_kern_hostid, 0, NULL, 0, 374 CTL_KERN, KERN_HOSTID, CTL_EOL); 375 sysctl_createv(clog, 0, NULL, NULL, 376 CTLFLAG_PERMANENT, 377 CTLTYPE_STRUCT, "clockrate", 378 SYSCTL_DESCR("Kernel clock rates"), 379 sysctl_kern_clockrate, 0, NULL, 380 sizeof(struct clockinfo), 381 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 382 sysctl_createv(clog, 0, NULL, NULL, 383 CTLFLAG_PERMANENT, 384 CTLTYPE_INT, "hardclock_ticks", 385 SYSCTL_DESCR("Number of hardclock ticks"), 386 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 387 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 388 sysctl_createv(clog, 0, NULL, NULL, 389 CTLFLAG_PERMANENT, 390 CTLTYPE_STRUCT, "vnode", 391 SYSCTL_DESCR("System vnode table"), 392 sysctl_kern_vnode, 0, NULL, 0, 393 CTL_KERN, KERN_VNODE, CTL_EOL); 394 sysctl_createv(clog, 0, NULL, NULL, 395 CTLFLAG_PERMANENT, 396 CTLTYPE_STRUCT, "file", 397 SYSCTL_DESCR("System open file table"), 398 sysctl_kern_file, 0, NULL, 0, 399 CTL_KERN, KERN_FILE, CTL_EOL); 400 #ifndef GPROF 401 sysctl_createv(clog, 0, NULL, NULL, 402 CTLFLAG_PERMANENT, 403 CTLTYPE_NODE, "profiling", 404 SYSCTL_DESCR("Profiling information (not available)"), 405 sysctl_notavail, 0, NULL, 0, 406 CTL_KERN, KERN_PROF, CTL_EOL); 407 #endif 408 sysctl_createv(clog, 0, NULL, NULL, 409 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 410 CTLTYPE_INT, "posix1version", 411 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 412 "with which the operating system attempts " 413 "to comply"), 414 NULL, _POSIX_VERSION, NULL, 0, 415 CTL_KERN, KERN_POSIX1, CTL_EOL); 416 sysctl_createv(clog, 0, NULL, NULL, 417 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 418 CTLTYPE_INT, "ngroups", 419 SYSCTL_DESCR("Maximum number of supplemental groups"), 420 NULL, NGROUPS_MAX, NULL, 0, 421 CTL_KERN, KERN_NGROUPS, CTL_EOL); 422 sysctl_createv(clog, 0, NULL, NULL, 423 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 424 CTLTYPE_INT, "job_control", 425 SYSCTL_DESCR("Whether job control is available"), 426 NULL, 1, NULL, 0, 427 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 428 sysctl_createv(clog, 0, NULL, NULL, 429 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 430 CTLTYPE_INT, "saved_ids", 431 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 432 "available"), NULL, 433 #ifdef _POSIX_SAVED_IDS 434 1, 435 #else /* _POSIX_SAVED_IDS */ 436 0, 437 #endif /* _POSIX_SAVED_IDS */ 438 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 439 sysctl_createv(clog, 0, NULL, NULL, 440 CTLFLAG_PERMANENT, 441 CTLTYPE_STRUCT, "boottime", 442 SYSCTL_DESCR("System boot time"), 443 NULL, 0, &boottime, sizeof(boottime), 444 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 445 sysctl_createv(clog, 0, NULL, NULL, 446 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 447 CTLTYPE_STRING, "domainname", 448 SYSCTL_DESCR("YP domain name"), 449 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 450 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 451 sysctl_createv(clog, 0, NULL, NULL, 452 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 453 CTLTYPE_INT, "maxpartitions", 454 SYSCTL_DESCR("Maximum number of partitions allowed per " 455 "disk"), 456 NULL, MAXPARTITIONS, NULL, 0, 457 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 458 sysctl_createv(clog, 0, NULL, NULL, 459 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 460 CTLTYPE_INT, "rawpartition", 461 SYSCTL_DESCR("Raw partition of a disk"), 462 NULL, RAW_PART, NULL, 0, 463 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 464 sysctl_createv(clog, 0, NULL, NULL, 465 CTLFLAG_PERMANENT, 466 CTLTYPE_STRUCT, "timex", NULL, 467 sysctl_notavail, 0, NULL, 0, 468 CTL_KERN, KERN_TIMEX, CTL_EOL); 469 sysctl_createv(clog, 0, NULL, NULL, 470 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 471 CTLTYPE_INT, "rtc_offset", 472 SYSCTL_DESCR("Offset of real time clock from UTC in " 473 "minutes"), 474 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 475 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 476 sysctl_createv(clog, 0, NULL, NULL, 477 CTLFLAG_PERMANENT, 478 CTLTYPE_STRING, "root_device", 479 SYSCTL_DESCR("Name of the root device"), 480 sysctl_root_device, 0, NULL, 0, 481 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 482 sysctl_createv(clog, 0, NULL, NULL, 483 CTLFLAG_PERMANENT, 484 CTLTYPE_INT, "msgbufsize", 485 SYSCTL_DESCR("Size of the kernel message buffer"), 486 sysctl_msgbuf, 0, NULL, 0, 487 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 488 sysctl_createv(clog, 0, NULL, NULL, 489 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 490 CTLTYPE_INT, "fsync", 491 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 492 "Synchronization Option is available on " 493 "this system"), 494 NULL, 1, NULL, 0, 495 CTL_KERN, KERN_FSYNC, CTL_EOL); 496 sysctl_createv(clog, 0, NULL, NULL, 497 CTLFLAG_PERMANENT, 498 CTLTYPE_NODE, "ipc", 499 SYSCTL_DESCR("SysV IPC options"), 500 NULL, 0, NULL, 0, 501 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 502 sysctl_createv(clog, 0, NULL, NULL, 503 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 504 CTLTYPE_INT, "sysvmsg", 505 SYSCTL_DESCR("System V style message support available"), 506 NULL, 507 #ifdef SYSVMSG 508 1, 509 #else /* SYSVMSG */ 510 0, 511 #endif /* SYSVMSG */ 512 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 513 sysctl_createv(clog, 0, NULL, NULL, 514 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 515 CTLTYPE_INT, "sysvsem", 516 SYSCTL_DESCR("System V style semaphore support " 517 "available"), NULL, 518 #ifdef SYSVSEM 519 1, 520 #else /* SYSVSEM */ 521 0, 522 #endif /* SYSVSEM */ 523 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 524 sysctl_createv(clog, 0, NULL, NULL, 525 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 526 CTLTYPE_INT, "sysvshm", 527 SYSCTL_DESCR("System V style shared memory support " 528 "available"), NULL, 529 #ifdef SYSVSHM 530 1, 531 #else /* SYSVSHM */ 532 0, 533 #endif /* SYSVSHM */ 534 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 535 sysctl_createv(clog, 0, NULL, NULL, 536 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 537 CTLTYPE_INT, "synchronized_io", 538 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 539 "I/O Option is available on this system"), 540 NULL, 1, NULL, 0, 541 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 542 sysctl_createv(clog, 0, NULL, NULL, 543 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 544 CTLTYPE_INT, "iov_max", 545 SYSCTL_DESCR("Maximum number of iovec structures per " 546 "process"), 547 NULL, IOV_MAX, NULL, 0, 548 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 549 sysctl_createv(clog, 0, NULL, NULL, 550 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 551 CTLTYPE_INT, "mapped_files", 552 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 553 "Files Option is available on this system"), 554 NULL, 1, NULL, 0, 555 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 556 sysctl_createv(clog, 0, NULL, NULL, 557 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 558 CTLTYPE_INT, "memlock", 559 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 560 "Locking Option is available on this " 561 "system"), 562 NULL, 1, NULL, 0, 563 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 564 sysctl_createv(clog, 0, NULL, NULL, 565 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 566 CTLTYPE_INT, "memlock_range", 567 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 568 "Locking Option is available on this " 569 "system"), 570 NULL, 1, NULL, 0, 571 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 572 sysctl_createv(clog, 0, NULL, NULL, 573 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 574 CTLTYPE_INT, "memory_protection", 575 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 576 "Protection Option is available on this " 577 "system"), 578 NULL, 1, NULL, 0, 579 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 580 sysctl_createv(clog, 0, NULL, NULL, 581 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 582 CTLTYPE_INT, "login_name_max", 583 SYSCTL_DESCR("Maximum login name length"), 584 NULL, LOGIN_NAME_MAX, NULL, 0, 585 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 586 sysctl_createv(clog, 0, NULL, NULL, 587 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 588 CTLTYPE_STRING, "defcorename", 589 SYSCTL_DESCR("Default core file name"), 590 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 591 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 592 sysctl_createv(clog, 0, NULL, NULL, 593 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 594 CTLTYPE_INT, "logsigexit", 595 SYSCTL_DESCR("Log process exit when caused by signals"), 596 NULL, 0, &kern_logsigexit, 0, 597 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 598 sysctl_createv(clog, 0, NULL, NULL, 599 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 600 CTLTYPE_INT, "fscale", 601 SYSCTL_DESCR("Kernel fixed-point scale factor"), 602 NULL, FSCALE, NULL, 0, 603 CTL_KERN, KERN_FSCALE, CTL_EOL); 604 sysctl_createv(clog, 0, NULL, NULL, 605 CTLFLAG_PERMANENT, 606 CTLTYPE_INT, "ccpu", 607 SYSCTL_DESCR("Scheduler exponential decay value"), 608 NULL, 0, &ccpu, 0, 609 CTL_KERN, KERN_CCPU, CTL_EOL); 610 sysctl_createv(clog, 0, NULL, NULL, 611 CTLFLAG_PERMANENT, 612 CTLTYPE_STRUCT, "cp_time", 613 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 614 sysctl_kern_cptime, 0, NULL, 0, 615 CTL_KERN, KERN_CP_TIME, CTL_EOL); 616 sysctl_createv(clog, 0, NULL, NULL, 617 CTLFLAG_PERMANENT, 618 CTLTYPE_INT, "msgbuf", 619 SYSCTL_DESCR("Kernel message buffer"), 620 sysctl_msgbuf, 0, NULL, 0, 621 CTL_KERN, KERN_MSGBUF, CTL_EOL); 622 sysctl_createv(clog, 0, NULL, NULL, 623 CTLFLAG_PERMANENT, 624 CTLTYPE_STRUCT, "consdev", 625 SYSCTL_DESCR("Console device"), 626 sysctl_consdev, 0, NULL, sizeof(dev_t), 627 CTL_KERN, KERN_CONSDEV, CTL_EOL); 628 #if NPTY > 0 629 sysctl_createv(clog, 0, NULL, NULL, 630 CTLFLAG_PERMANENT, 631 CTLTYPE_INT, "maxptys", 632 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 633 sysctl_kern_maxptys, 0, NULL, 0, 634 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 635 #endif /* NPTY > 0 */ 636 sysctl_createv(clog, 0, NULL, NULL, 637 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 638 CTLTYPE_INT, "maxphys", 639 SYSCTL_DESCR("Maximum raw I/O transfer size"), 640 NULL, MAXPHYS, NULL, 0, 641 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 642 sysctl_createv(clog, 0, NULL, NULL, 643 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 644 CTLTYPE_INT, "sbmax", 645 SYSCTL_DESCR("Maximum socket buffer size"), 646 sysctl_kern_sbmax, 0, NULL, 0, 647 CTL_KERN, KERN_SBMAX, CTL_EOL); 648 sysctl_createv(clog, 0, NULL, NULL, 649 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 650 CTLTYPE_INT, "monotonic_clock", 651 SYSCTL_DESCR("Implementation version of the POSIX " 652 "1003.1b Monotonic Clock Option"), 653 /* XXX _POSIX_VERSION */ 654 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 655 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 656 sysctl_createv(clog, 0, NULL, NULL, 657 CTLFLAG_PERMANENT, 658 CTLTYPE_INT, "urandom", 659 SYSCTL_DESCR("Random integer value"), 660 sysctl_kern_urnd, 0, NULL, 0, 661 CTL_KERN, KERN_URND, CTL_EOL); 662 sysctl_createv(clog, 0, NULL, NULL, 663 CTLFLAG_PERMANENT, 664 CTLTYPE_INT, "arandom", 665 SYSCTL_DESCR("n bytes of random data"), 666 sysctl_kern_arnd, 0, NULL, 0, 667 CTL_KERN, KERN_ARND, CTL_EOL); 668 sysctl_createv(clog, 0, NULL, NULL, 669 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 670 CTLTYPE_INT, "labelsector", 671 SYSCTL_DESCR("Sector number containing the disklabel"), 672 NULL, LABELSECTOR, NULL, 0, 673 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 674 sysctl_createv(clog, 0, NULL, NULL, 675 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 676 CTLTYPE_INT, "labeloffset", 677 SYSCTL_DESCR("Offset of the disklabel within the " 678 "sector"), 679 NULL, LABELOFFSET, NULL, 0, 680 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 681 sysctl_createv(clog, 0, NULL, NULL, 682 CTLFLAG_PERMANENT, 683 CTLTYPE_NODE, "lwp", 684 SYSCTL_DESCR("System-wide LWP information"), 685 sysctl_kern_lwp, 0, NULL, 0, 686 CTL_KERN, KERN_LWP, CTL_EOL); 687 sysctl_createv(clog, 0, NULL, NULL, 688 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 689 CTLTYPE_INT, "forkfsleep", 690 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 691 "to process limits"), 692 sysctl_kern_forkfsleep, 0, NULL, 0, 693 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 694 sysctl_createv(clog, 0, NULL, NULL, 695 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 696 CTLTYPE_INT, "posix_threads", 697 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 698 "Threads option to which the system " 699 "attempts to conform"), 700 /* XXX _POSIX_VERSION */ 701 NULL, _POSIX_THREADS, NULL, 0, 702 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 703 sysctl_createv(clog, 0, NULL, NULL, 704 CTLFLAG_PERMANENT, 705 CTLTYPE_INT, "posix_semaphores", 706 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 707 "Semaphores option to which the system " 708 "attempts to conform"), NULL, 709 0, &posix_semaphores, 710 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 711 sysctl_createv(clog, 0, NULL, NULL, 712 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 713 CTLTYPE_INT, "posix_barriers", 714 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 715 "Barriers option to which the system " 716 "attempts to conform"), 717 /* XXX _POSIX_VERSION */ 718 NULL, _POSIX_BARRIERS, NULL, 0, 719 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 720 sysctl_createv(clog, 0, NULL, NULL, 721 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 722 CTLTYPE_INT, "posix_timers", 723 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 724 "Timers option to which the system " 725 "attempts to conform"), 726 /* XXX _POSIX_VERSION */ 727 NULL, _POSIX_TIMERS, NULL, 0, 728 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 729 sysctl_createv(clog, 0, NULL, NULL, 730 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 731 CTLTYPE_INT, "posix_spin_locks", 732 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 733 "Locks option to which the system attempts " 734 "to conform"), 735 /* XXX _POSIX_VERSION */ 736 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 737 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 738 sysctl_createv(clog, 0, NULL, NULL, 739 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 740 CTLTYPE_INT, "posix_reader_writer_locks", 741 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 742 "Read-Write Locks option to which the " 743 "system attempts to conform"), 744 /* XXX _POSIX_VERSION */ 745 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 746 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 747 sysctl_createv(clog, 0, NULL, NULL, 748 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 749 CTLTYPE_INT, "dump_on_panic", 750 SYSCTL_DESCR("Perform a crash dump on system panic"), 751 NULL, 0, &dumponpanic, 0, 752 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 753 #ifdef DIAGNOSTIC 754 sysctl_createv(clog, 0, NULL, NULL, 755 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 756 CTLTYPE_INT, "panic_now", 757 SYSCTL_DESCR("Trigger a panic"), 758 sysctl_kern_trigger_panic, 0, NULL, 0, 759 CTL_KERN, CTL_CREATE, CTL_EOL); 760 #endif 761 sysctl_createv(clog, 0, NULL, NULL, 762 CTLFLAG_PERMANENT, 763 CTLTYPE_INT, "root_partition", 764 SYSCTL_DESCR("Root partition on the root device"), 765 sysctl_kern_root_partition, 0, NULL, 0, 766 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 767 sysctl_createv(clog, 0, NULL, NULL, 768 CTLFLAG_PERMANENT, 769 CTLTYPE_STRUCT, "drivers", 770 SYSCTL_DESCR("List of all drivers with block and " 771 "character device numbers"), 772 sysctl_kern_drivers, 0, NULL, 0, 773 CTL_KERN, KERN_DRIVERS, CTL_EOL); 774 sysctl_createv(clog, 0, NULL, NULL, 775 CTLFLAG_PERMANENT, 776 CTLTYPE_STRUCT, "file2", 777 SYSCTL_DESCR("System open file table"), 778 sysctl_kern_file2, 0, NULL, 0, 779 CTL_KERN, KERN_FILE2, CTL_EOL); 780 sysctl_createv(clog, 0, NULL, NULL, 781 CTLFLAG_PERMANENT, 782 CTLTYPE_STRUCT, "cp_id", 783 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 784 sysctl_kern_cpid, 0, NULL, 0, 785 CTL_KERN, KERN_CP_ID, CTL_EOL); 786 sysctl_createv(clog, 0, NULL, &rnode, 787 CTLFLAG_PERMANENT, 788 CTLTYPE_NODE, "coredump", 789 SYSCTL_DESCR("Coredump settings."), 790 NULL, 0, NULL, 0, 791 CTL_KERN, CTL_CREATE, CTL_EOL); 792 sysctl_createv(clog, 0, &rnode, &rnode, 793 CTLFLAG_PERMANENT, 794 CTLTYPE_NODE, "setid", 795 SYSCTL_DESCR("Set-id processes' coredump settings."), 796 NULL, 0, NULL, 0, 797 CTL_CREATE, CTL_EOL); 798 sysctl_createv(clog, 0, &rnode, NULL, 799 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 800 CTLTYPE_INT, "dump", 801 SYSCTL_DESCR("Allow set-id processes to dump core."), 802 sysctl_security_setidcore, 0, &security_setidcore_dump, 803 sizeof(security_setidcore_dump), 804 CTL_CREATE, CTL_EOL); 805 sysctl_createv(clog, 0, &rnode, NULL, 806 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 807 CTLTYPE_STRING, "path", 808 SYSCTL_DESCR("Path pattern for set-id coredumps."), 809 sysctl_security_setidcorename, 0, 810 &security_setidcore_path, 811 sizeof(security_setidcore_path), 812 CTL_CREATE, CTL_EOL); 813 sysctl_createv(clog, 0, &rnode, NULL, 814 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 815 CTLTYPE_INT, "owner", 816 SYSCTL_DESCR("Owner id for set-id processes' cores."), 817 sysctl_security_setidcore, 0, &security_setidcore_owner, 818 0, 819 CTL_CREATE, CTL_EOL); 820 sysctl_createv(clog, 0, &rnode, NULL, 821 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 822 CTLTYPE_INT, "group", 823 SYSCTL_DESCR("Group id for set-id processes' cores."), 824 sysctl_security_setidcore, 0, &security_setidcore_group, 825 0, 826 CTL_CREATE, CTL_EOL); 827 sysctl_createv(clog, 0, &rnode, NULL, 828 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 829 CTLTYPE_INT, "mode", 830 SYSCTL_DESCR("Mode for set-id processes' cores."), 831 sysctl_security_setidcore, 0, &security_setidcore_mode, 832 0, 833 CTL_CREATE, CTL_EOL); 834 #ifdef KERN_SA 835 sysctl_createv(clog, 0, NULL, NULL, 836 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 837 CTLTYPE_INT, "no_sa_support", 838 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 839 NULL, 0, &sa_system_disabled, 0, 840 CTL_KERN, CTL_CREATE, CTL_EOL); 841 #else 842 sysctl_createv(clog, 0, NULL, NULL, 843 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 844 CTLTYPE_INT, "no_sa_support", 845 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 846 NULL, 1, NULL, 0, 847 CTL_KERN, CTL_CREATE, CTL_EOL); 848 #endif 849 } 850 851 SYSCTL_SETUP(sysctl_kern_proc_setup, 852 "sysctl kern.proc/proc2/proc_args subtree setup") 853 { 854 855 sysctl_createv(clog, 0, NULL, NULL, 856 CTLFLAG_PERMANENT, 857 CTLTYPE_NODE, "kern", NULL, 858 NULL, 0, NULL, 0, 859 CTL_KERN, CTL_EOL); 860 861 sysctl_createv(clog, 0, NULL, NULL, 862 CTLFLAG_PERMANENT, 863 CTLTYPE_NODE, "proc", 864 SYSCTL_DESCR("System-wide process information"), 865 sysctl_doeproc, 0, NULL, 0, 866 CTL_KERN, KERN_PROC, CTL_EOL); 867 sysctl_createv(clog, 0, NULL, NULL, 868 CTLFLAG_PERMANENT, 869 CTLTYPE_NODE, "proc2", 870 SYSCTL_DESCR("Machine-independent process information"), 871 sysctl_doeproc, 0, NULL, 0, 872 CTL_KERN, KERN_PROC2, CTL_EOL); 873 sysctl_createv(clog, 0, NULL, NULL, 874 CTLFLAG_PERMANENT, 875 CTLTYPE_NODE, "proc_args", 876 SYSCTL_DESCR("Process argument information"), 877 sysctl_kern_proc_args, 0, NULL, 0, 878 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 879 880 /* 881 "nodes" under these: 882 883 KERN_PROC_ALL 884 KERN_PROC_PID pid 885 KERN_PROC_PGRP pgrp 886 KERN_PROC_SESSION sess 887 KERN_PROC_TTY tty 888 KERN_PROC_UID uid 889 KERN_PROC_RUID uid 890 KERN_PROC_GID gid 891 KERN_PROC_RGID gid 892 893 all in all, probably not worth the effort... 894 */ 895 } 896 897 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 898 { 899 u_int u; 900 u_quad_t q; 901 902 sysctl_createv(clog, 0, NULL, NULL, 903 CTLFLAG_PERMANENT, 904 CTLTYPE_NODE, "hw", NULL, 905 NULL, 0, NULL, 0, 906 CTL_HW, CTL_EOL); 907 908 sysctl_createv(clog, 0, NULL, NULL, 909 CTLFLAG_PERMANENT, 910 CTLTYPE_STRING, "machine", 911 SYSCTL_DESCR("Machine class"), 912 NULL, 0, machine, 0, 913 CTL_HW, HW_MACHINE, CTL_EOL); 914 sysctl_createv(clog, 0, NULL, NULL, 915 CTLFLAG_PERMANENT, 916 CTLTYPE_STRING, "model", 917 SYSCTL_DESCR("Machine model"), 918 NULL, 0, cpu_model, 0, 919 CTL_HW, HW_MODEL, CTL_EOL); 920 sysctl_createv(clog, 0, NULL, NULL, 921 CTLFLAG_PERMANENT, 922 CTLTYPE_INT, "ncpu", 923 SYSCTL_DESCR("Number of CPUs configured"), 924 NULL, 0, &ncpu, 0, 925 CTL_HW, HW_NCPU, CTL_EOL); 926 sysctl_createv(clog, 0, NULL, NULL, 927 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 928 CTLTYPE_INT, "byteorder", 929 SYSCTL_DESCR("System byte order"), 930 NULL, BYTE_ORDER, NULL, 0, 931 CTL_HW, HW_BYTEORDER, CTL_EOL); 932 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 933 UINT_MAX : physmem * PAGE_SIZE; 934 sysctl_createv(clog, 0, NULL, NULL, 935 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 936 CTLTYPE_INT, "physmem", 937 SYSCTL_DESCR("Bytes of physical memory"), 938 NULL, u, NULL, 0, 939 CTL_HW, HW_PHYSMEM, CTL_EOL); 940 sysctl_createv(clog, 0, NULL, NULL, 941 CTLFLAG_PERMANENT, 942 CTLTYPE_INT, "usermem", 943 SYSCTL_DESCR("Bytes of non-kernel memory"), 944 sysctl_hw_usermem, 0, NULL, 0, 945 CTL_HW, HW_USERMEM, CTL_EOL); 946 sysctl_createv(clog, 0, NULL, NULL, 947 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 948 CTLTYPE_INT, "pagesize", 949 SYSCTL_DESCR("Software page size"), 950 NULL, PAGE_SIZE, NULL, 0, 951 CTL_HW, HW_PAGESIZE, CTL_EOL); 952 sysctl_createv(clog, 0, NULL, NULL, 953 CTLFLAG_PERMANENT, 954 CTLTYPE_STRING, "machine_arch", 955 SYSCTL_DESCR("Machine CPU class"), 956 NULL, 0, machine_arch, 0, 957 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 958 sysctl_createv(clog, 0, NULL, NULL, 959 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 960 CTLTYPE_INT, "alignbytes", 961 SYSCTL_DESCR("Alignment constraint for all possible " 962 "data types"), 963 NULL, ALIGNBYTES, NULL, 0, 964 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 965 sysctl_createv(clog, 0, NULL, NULL, 966 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 967 CTLTYPE_STRING, "cnmagic", 968 SYSCTL_DESCR("Console magic key sequence"), 969 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 970 CTL_HW, HW_CNMAGIC, CTL_EOL); 971 q = (u_quad_t)physmem * PAGE_SIZE; 972 sysctl_createv(clog, 0, NULL, NULL, 973 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 974 CTLTYPE_QUAD, "physmem64", 975 SYSCTL_DESCR("Bytes of physical memory"), 976 NULL, q, NULL, 0, 977 CTL_HW, HW_PHYSMEM64, CTL_EOL); 978 sysctl_createv(clog, 0, NULL, NULL, 979 CTLFLAG_PERMANENT, 980 CTLTYPE_QUAD, "usermem64", 981 SYSCTL_DESCR("Bytes of non-kernel memory"), 982 sysctl_hw_usermem, 0, NULL, 0, 983 CTL_HW, HW_USERMEM64, CTL_EOL); 984 sysctl_createv(clog, 0, NULL, NULL, 985 CTLFLAG_PERMANENT, 986 CTLTYPE_INT, "ncpuonline", 987 SYSCTL_DESCR("Number of CPUs online"), 988 NULL, 0, &ncpuonline, 0, 989 CTL_HW, HW_NCPUONLINE, CTL_EOL); 990 } 991 992 #ifdef DEBUG 993 /* 994 * Debugging related system variables. 995 */ 996 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 997 struct ctldebug debug5, debug6, debug7, debug8, debug9; 998 struct ctldebug debug10, debug11, debug12, debug13, debug14; 999 struct ctldebug debug15, debug16, debug17, debug18, debug19; 1000 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 1001 &debug0, &debug1, &debug2, &debug3, &debug4, 1002 &debug5, &debug6, &debug7, &debug8, &debug9, 1003 &debug10, &debug11, &debug12, &debug13, &debug14, 1004 &debug15, &debug16, &debug17, &debug18, &debug19, 1005 }; 1006 1007 /* 1008 * this setup routine is a replacement for debug_sysctl() 1009 * 1010 * note that it creates several nodes per defined debug variable 1011 */ 1012 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 1013 { 1014 struct ctldebug *cdp; 1015 char nodename[20]; 1016 int i; 1017 1018 /* 1019 * two ways here: 1020 * 1021 * the "old" way (debug.name -> value) which was emulated by 1022 * the sysctl(8) binary 1023 * 1024 * the new way, which the sysctl(8) binary was actually using 1025 1026 node debug 1027 node debug.0 1028 string debug.0.name 1029 int debug.0.value 1030 int debug.name 1031 1032 */ 1033 1034 sysctl_createv(clog, 0, NULL, NULL, 1035 CTLFLAG_PERMANENT, 1036 CTLTYPE_NODE, "debug", NULL, 1037 NULL, 0, NULL, 0, 1038 CTL_DEBUG, CTL_EOL); 1039 1040 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 1041 cdp = debugvars[i]; 1042 if (cdp->debugname == NULL || cdp->debugvar == NULL) 1043 continue; 1044 1045 snprintf(nodename, sizeof(nodename), "debug%d", i); 1046 sysctl_createv(clog, 0, NULL, NULL, 1047 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1048 CTLTYPE_NODE, nodename, NULL, 1049 NULL, 0, NULL, 0, 1050 CTL_DEBUG, i, CTL_EOL); 1051 sysctl_createv(clog, 0, NULL, NULL, 1052 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1053 CTLTYPE_STRING, "name", NULL, 1054 /*XXXUNCONST*/ 1055 NULL, 0, __UNCONST(cdp->debugname), 0, 1056 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 1057 sysctl_createv(clog, 0, NULL, NULL, 1058 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1059 CTLTYPE_INT, "value", NULL, 1060 NULL, 0, cdp->debugvar, 0, 1061 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 1062 sysctl_createv(clog, 0, NULL, NULL, 1063 CTLFLAG_PERMANENT, 1064 CTLTYPE_INT, cdp->debugname, NULL, 1065 NULL, 0, cdp->debugvar, 0, 1066 CTL_DEBUG, CTL_CREATE, CTL_EOL); 1067 } 1068 } 1069 #endif /* DEBUG */ 1070 1071 /* 1072 * ******************************************************************** 1073 * section 2: private node-specific helper routines. 1074 * ******************************************************************** 1075 */ 1076 1077 #ifdef DIAGNOSTIC 1078 static int 1079 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 1080 { 1081 int newtrig, error; 1082 struct sysctlnode node; 1083 1084 newtrig = 0; 1085 node = *rnode; 1086 node.sysctl_data = &newtrig; 1087 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1088 if (error || newp == NULL) 1089 return (error); 1090 1091 if (newtrig != 0) 1092 panic("Panic triggered"); 1093 1094 return (error); 1095 } 1096 #endif 1097 1098 /* 1099 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 1100 * new value is lower than desiredvnodes and then calls reinit 1101 * routines that needs to adjust to the new value. 1102 */ 1103 static int 1104 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 1105 { 1106 int error, new_vnodes, old_vnodes, new_max; 1107 struct sysctlnode node; 1108 1109 new_vnodes = desiredvnodes; 1110 node = *rnode; 1111 node.sysctl_data = &new_vnodes; 1112 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1113 if (error || newp == NULL) 1114 return (error); 1115 1116 /* Limits: 75% of KVA and physical memory. */ 1117 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 1118 if (new_vnodes > new_max) 1119 new_vnodes = new_max; 1120 1121 old_vnodes = desiredvnodes; 1122 desiredvnodes = new_vnodes; 1123 if (new_vnodes < old_vnodes) { 1124 error = vfs_drainvnodes(new_vnodes, l); 1125 if (error) { 1126 desiredvnodes = old_vnodes; 1127 return (error); 1128 } 1129 } 1130 vfs_reinit(); 1131 nchreinit(); 1132 1133 return (0); 1134 } 1135 1136 /* 1137 * sysctl helper routine for rtc_offset - set time after changes 1138 */ 1139 static int 1140 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1141 { 1142 struct timespec ts, delta; 1143 int error, new_rtc_offset; 1144 struct sysctlnode node; 1145 1146 new_rtc_offset = rtc_offset; 1147 node = *rnode; 1148 node.sysctl_data = &new_rtc_offset; 1149 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1150 if (error || newp == NULL) 1151 return (error); 1152 1153 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1154 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1155 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1156 return (EPERM); 1157 if (rtc_offset == new_rtc_offset) 1158 return (0); 1159 1160 /* if we change the offset, adjust the time */ 1161 nanotime(&ts); 1162 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1163 delta.tv_nsec = 0; 1164 timespecadd(&ts, &delta, &ts); 1165 rtc_offset = new_rtc_offset; 1166 return (settime(l->l_proc, &ts)); 1167 } 1168 1169 /* 1170 * sysctl helper routine for kern.maxproc. Ensures that the new 1171 * values are not too low or too high. 1172 */ 1173 static int 1174 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1175 { 1176 int error, nmaxproc; 1177 struct sysctlnode node; 1178 1179 nmaxproc = maxproc; 1180 node = *rnode; 1181 node.sysctl_data = &nmaxproc; 1182 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1183 if (error || newp == NULL) 1184 return (error); 1185 1186 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1187 return (EINVAL); 1188 #ifdef __HAVE_CPU_MAXPROC 1189 if (nmaxproc > cpu_maxproc()) 1190 return (EINVAL); 1191 #endif 1192 maxproc = nmaxproc; 1193 1194 return (0); 1195 } 1196 1197 /* 1198 * sysctl helper function for kern.hostid. The hostid is a long, but 1199 * we export it as an int, so we need to give it a little help. 1200 */ 1201 static int 1202 sysctl_kern_hostid(SYSCTLFN_ARGS) 1203 { 1204 int error, inthostid; 1205 struct sysctlnode node; 1206 1207 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1208 node = *rnode; 1209 node.sysctl_data = &inthostid; 1210 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1211 if (error || newp == NULL) 1212 return (error); 1213 1214 hostid = (unsigned)inthostid; 1215 1216 return (0); 1217 } 1218 1219 /* 1220 * sysctl helper function for kern.hostname and kern.domainnname. 1221 * resets the relevant recorded length when the underlying name is 1222 * changed. 1223 */ 1224 static int 1225 sysctl_setlen(SYSCTLFN_ARGS) 1226 { 1227 int error; 1228 1229 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1230 if (error || newp == NULL) 1231 return (error); 1232 1233 switch (rnode->sysctl_num) { 1234 case KERN_HOSTNAME: 1235 hostnamelen = strlen((const char*)rnode->sysctl_data); 1236 break; 1237 case KERN_DOMAINNAME: 1238 domainnamelen = strlen((const char*)rnode->sysctl_data); 1239 break; 1240 } 1241 1242 return (0); 1243 } 1244 1245 /* 1246 * sysctl helper routine for kern.clockrate. Assembles a struct on 1247 * the fly to be returned to the caller. 1248 */ 1249 static int 1250 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1251 { 1252 struct clockinfo clkinfo; 1253 struct sysctlnode node; 1254 1255 clkinfo.tick = tick; 1256 clkinfo.tickadj = tickadj; 1257 clkinfo.hz = hz; 1258 clkinfo.profhz = profhz; 1259 clkinfo.stathz = stathz ? stathz : hz; 1260 1261 node = *rnode; 1262 node.sysctl_data = &clkinfo; 1263 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1264 } 1265 1266 1267 /* 1268 * sysctl helper routine for kern.file pseudo-subtree. 1269 */ 1270 static int 1271 sysctl_kern_file(SYSCTLFN_ARGS) 1272 { 1273 int error; 1274 size_t buflen; 1275 struct file *fp, *dp, *np, fbuf; 1276 char *start, *where; 1277 1278 start = where = oldp; 1279 buflen = *oldlenp; 1280 dp = NULL; 1281 1282 if (where == NULL) { 1283 /* 1284 * overestimate by 10 files 1285 */ 1286 *oldlenp = sizeof(filehead) + (nfiles + 10) * 1287 sizeof(struct file); 1288 return (0); 1289 } 1290 1291 /* 1292 * first dcopyout filehead 1293 */ 1294 if (buflen < sizeof(filehead)) { 1295 *oldlenp = 0; 1296 return (0); 1297 } 1298 sysctl_unlock(); 1299 error = dcopyout(l, &filehead, where, sizeof(filehead)); 1300 if (error) { 1301 sysctl_relock(); 1302 return error; 1303 } 1304 buflen -= sizeof(filehead); 1305 where += sizeof(filehead); 1306 1307 /* 1308 * allocate dummy file descriptor to make position in list 1309 */ 1310 if ((dp = fgetdummy()) == NULL) { 1311 sysctl_relock(); 1312 return ENOMEM; 1313 } 1314 1315 /* 1316 * followed by an array of file structures 1317 */ 1318 mutex_enter(&filelist_lock); 1319 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1320 np = LIST_NEXT(fp, f_list); 1321 mutex_enter(&fp->f_lock); 1322 if (fp->f_count == 0) { 1323 mutex_exit(&fp->f_lock); 1324 continue; 1325 } 1326 /* 1327 * XXX Need to prevent that from being an alternative way 1328 * XXX to getting process information. 1329 */ 1330 if (kauth_authorize_generic(l->l_cred, 1331 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 1332 mutex_exit(&fp->f_lock); 1333 continue; 1334 } 1335 if (buflen < sizeof(struct file)) { 1336 *oldlenp = where - start; 1337 mutex_exit(&fp->f_lock); 1338 error = ENOMEM; 1339 break; 1340 } 1341 memcpy(&fbuf, fp, sizeof(fbuf)); 1342 LIST_INSERT_AFTER(fp, dp, f_list); 1343 mutex_exit(&fp->f_lock); 1344 mutex_exit(&filelist_lock); 1345 error = dcopyout(l, &fbuf, where, sizeof(fbuf)); 1346 if (error) { 1347 mutex_enter(&filelist_lock); 1348 LIST_REMOVE(dp, f_list); 1349 break; 1350 } 1351 buflen -= sizeof(struct file); 1352 where += sizeof(struct file); 1353 mutex_enter(&filelist_lock); 1354 np = LIST_NEXT(dp, f_list); 1355 LIST_REMOVE(dp, f_list); 1356 } 1357 mutex_exit(&filelist_lock); 1358 *oldlenp = where - start; 1359 if (dp != NULL) 1360 fputdummy(dp); 1361 sysctl_relock(); 1362 return (error); 1363 } 1364 1365 /* 1366 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1367 * former it merely checks the message buffer is set up. For the latter, 1368 * it also copies out the data if necessary. 1369 */ 1370 static int 1371 sysctl_msgbuf(SYSCTLFN_ARGS) 1372 { 1373 char *where = oldp; 1374 size_t len, maxlen; 1375 long beg, end; 1376 extern kmutex_t log_lock; 1377 int error; 1378 1379 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1380 msgbufenabled = 0; 1381 return (ENXIO); 1382 } 1383 1384 switch (rnode->sysctl_num) { 1385 case KERN_MSGBUFSIZE: { 1386 struct sysctlnode node = *rnode; 1387 int msg_bufs = (int)msgbufp->msg_bufs; 1388 node.sysctl_data = &msg_bufs; 1389 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1390 } 1391 case KERN_MSGBUF: 1392 break; 1393 default: 1394 return (EOPNOTSUPP); 1395 } 1396 1397 if (newp != NULL) 1398 return (EPERM); 1399 1400 if (oldp == NULL) { 1401 /* always return full buffer size */ 1402 *oldlenp = msgbufp->msg_bufs; 1403 return (0); 1404 } 1405 1406 sysctl_unlock(); 1407 1408 /* 1409 * First, copy from the write pointer to the end of 1410 * message buffer. 1411 */ 1412 error = 0; 1413 mutex_spin_enter(&log_lock); 1414 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1415 beg = msgbufp->msg_bufx; 1416 end = msgbufp->msg_bufs; 1417 mutex_spin_exit(&log_lock); 1418 1419 while (maxlen > 0) { 1420 len = MIN(end - beg, maxlen); 1421 if (len == 0) 1422 break; 1423 /* XXX unlocked, but hardly matters. */ 1424 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1425 if (error) 1426 break; 1427 where += len; 1428 maxlen -= len; 1429 1430 /* 1431 * ... then, copy from the beginning of message buffer to 1432 * the write pointer. 1433 */ 1434 beg = 0; 1435 end = msgbufp->msg_bufx; 1436 } 1437 1438 sysctl_relock(); 1439 return (error); 1440 } 1441 1442 /* 1443 * sysctl helper routine for kern.defcorename. In the case of a new 1444 * string being assigned, check that it's not a zero-length string. 1445 * (XXX the check in -current doesn't work, but do we really care?) 1446 */ 1447 static int 1448 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1449 { 1450 int error; 1451 char *newcorename; 1452 struct sysctlnode node; 1453 1454 newcorename = PNBUF_GET(); 1455 node = *rnode; 1456 node.sysctl_data = &newcorename[0]; 1457 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1458 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1459 if (error || newp == NULL) { 1460 goto done; 1461 } 1462 1463 /* 1464 * when sysctl_lookup() deals with a string, it's guaranteed 1465 * to come back nul terminated. So there. :) 1466 */ 1467 if (strlen(newcorename) == 0) { 1468 error = EINVAL; 1469 } else { 1470 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1471 error = 0; 1472 } 1473 done: 1474 PNBUF_PUT(newcorename); 1475 return error; 1476 } 1477 1478 /* 1479 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1480 * across all cpus. 1481 */ 1482 static int 1483 sysctl_kern_cptime(SYSCTLFN_ARGS) 1484 { 1485 struct sysctlnode node = *rnode; 1486 uint64_t *cp_time = NULL; 1487 int error, n = ncpu, i; 1488 struct cpu_info *ci; 1489 CPU_INFO_ITERATOR cii; 1490 1491 /* 1492 * if you specifically pass a buffer that is the size of the 1493 * sum, or if you are probing for the size, you get the "sum" 1494 * of cp_time (and the size thereof) across all processors. 1495 * 1496 * alternately, you can pass an additional mib number and get 1497 * cp_time for that particular processor. 1498 */ 1499 switch (namelen) { 1500 case 0: 1501 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1502 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1503 n = -1; /* SUM */ 1504 } 1505 else { 1506 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1507 n = -2; /* ALL */ 1508 } 1509 break; 1510 case 1: 1511 if (name[0] < 0 || name[0] >= n) 1512 return (ENOENT); /* ENOSUCHPROCESSOR */ 1513 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1514 n = name[0]; 1515 /* 1516 * adjust these so that sysctl_lookup() will be happy 1517 */ 1518 name++; 1519 namelen--; 1520 break; 1521 default: 1522 return (EINVAL); 1523 } 1524 1525 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1526 if (cp_time == NULL) 1527 return (ENOMEM); 1528 node.sysctl_data = cp_time; 1529 memset(cp_time, 0, node.sysctl_size); 1530 1531 for (CPU_INFO_FOREACH(cii, ci)) { 1532 if (n <= 0) { 1533 for (i = 0; i < CPUSTATES; i++) { 1534 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1535 } 1536 } 1537 /* 1538 * if a specific processor was requested and we just 1539 * did it, we're done here 1540 */ 1541 if (n == 0) 1542 break; 1543 /* 1544 * if doing "all", skip to next cp_time set for next processor 1545 */ 1546 if (n == -2) 1547 cp_time += CPUSTATES; 1548 /* 1549 * if we're doing a specific processor, we're one 1550 * processor closer 1551 */ 1552 if (n > 0) 1553 n--; 1554 } 1555 1556 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1557 kmem_free(node.sysctl_data, node.sysctl_size); 1558 return (error); 1559 } 1560 1561 #if NPTY > 0 1562 /* 1563 * sysctl helper routine for kern.maxptys. Ensures that any new value 1564 * is acceptable to the pty subsystem. 1565 */ 1566 static int 1567 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1568 { 1569 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1570 int error, xmax; 1571 struct sysctlnode node; 1572 1573 /* get current value of maxptys */ 1574 xmax = pty_maxptys(0, 0); 1575 1576 node = *rnode; 1577 node.sysctl_data = &xmax; 1578 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1579 if (error || newp == NULL) 1580 return (error); 1581 1582 if (xmax != pty_maxptys(xmax, 1)) 1583 return (EINVAL); 1584 1585 return (0); 1586 } 1587 #endif /* NPTY > 0 */ 1588 1589 /* 1590 * sysctl helper routine for kern.sbmax. Basically just ensures that 1591 * any new value is not too small. 1592 */ 1593 static int 1594 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1595 { 1596 int error, new_sbmax; 1597 struct sysctlnode node; 1598 1599 new_sbmax = sb_max; 1600 node = *rnode; 1601 node.sysctl_data = &new_sbmax; 1602 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1603 if (error || newp == NULL) 1604 return (error); 1605 1606 KERNEL_LOCK(1, NULL); 1607 error = sb_max_set(new_sbmax); 1608 KERNEL_UNLOCK_ONE(NULL); 1609 1610 return (error); 1611 } 1612 1613 /* 1614 * sysctl helper routine for kern.urandom node. Picks a random number 1615 * for you. 1616 */ 1617 static int 1618 sysctl_kern_urnd(SYSCTLFN_ARGS) 1619 { 1620 #if NRND > 0 1621 int v, rv; 1622 1623 KERNEL_LOCK(1, NULL); 1624 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1625 KERNEL_UNLOCK_ONE(NULL); 1626 if (rv == sizeof(v)) { 1627 struct sysctlnode node = *rnode; 1628 node.sysctl_data = &v; 1629 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1630 } 1631 else 1632 return (EIO); /*XXX*/ 1633 #else 1634 return (EOPNOTSUPP); 1635 #endif 1636 } 1637 1638 /* 1639 * sysctl helper routine for kern.arandom node. Picks a random number 1640 * for you. 1641 */ 1642 static int 1643 sysctl_kern_arnd(SYSCTLFN_ARGS) 1644 { 1645 #if NRND > 0 1646 int error; 1647 void *v; 1648 struct sysctlnode node = *rnode; 1649 1650 if (*oldlenp == 0) 1651 return 0; 1652 if (*oldlenp > 8192) 1653 return E2BIG; 1654 1655 v = kmem_alloc(*oldlenp, KM_SLEEP); 1656 arc4randbytes(v, *oldlenp); 1657 node.sysctl_data = v; 1658 node.sysctl_size = *oldlenp; 1659 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1660 kmem_free(v, *oldlenp); 1661 return error; 1662 #else 1663 return (EOPNOTSUPP); 1664 #endif 1665 } 1666 /* 1667 * sysctl helper routine to do kern.lwp.* work. 1668 */ 1669 static int 1670 sysctl_kern_lwp(SYSCTLFN_ARGS) 1671 { 1672 struct kinfo_lwp klwp; 1673 struct proc *p; 1674 struct lwp *l2, *l3; 1675 char *where, *dp; 1676 int pid, elem_size, elem_count; 1677 int buflen, needed, error; 1678 bool gotit; 1679 1680 if (namelen == 1 && name[0] == CTL_QUERY) 1681 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1682 1683 dp = where = oldp; 1684 buflen = where != NULL ? *oldlenp : 0; 1685 error = needed = 0; 1686 1687 if (newp != NULL || namelen != 3) 1688 return (EINVAL); 1689 pid = name[0]; 1690 elem_size = name[1]; 1691 elem_count = name[2]; 1692 1693 sysctl_unlock(); 1694 if (pid == -1) { 1695 mutex_enter(proc_lock); 1696 PROCLIST_FOREACH(p, &allproc) { 1697 /* Grab a hold on the process. */ 1698 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1699 continue; 1700 } 1701 mutex_exit(proc_lock); 1702 1703 mutex_enter(p->p_lock); 1704 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1705 if (buflen >= elem_size && elem_count > 0) { 1706 lwp_lock(l2); 1707 fill_lwp(l2, &klwp); 1708 lwp_unlock(l2); 1709 mutex_exit(p->p_lock); 1710 1711 /* 1712 * Copy out elem_size, but not 1713 * larger than the size of a 1714 * struct kinfo_proc2. 1715 */ 1716 error = dcopyout(l, &klwp, dp, 1717 min(sizeof(klwp), elem_size)); 1718 if (error) { 1719 rw_exit(&p->p_reflock); 1720 goto cleanup; 1721 } 1722 mutex_enter(p->p_lock); 1723 LIST_FOREACH(l3, &p->p_lwps, 1724 l_sibling) { 1725 if (l2 == l3) 1726 break; 1727 } 1728 if (l3 == NULL) { 1729 mutex_exit(p->p_lock); 1730 rw_exit(&p->p_reflock); 1731 error = EAGAIN; 1732 goto cleanup; 1733 } 1734 dp += elem_size; 1735 buflen -= elem_size; 1736 elem_count--; 1737 } 1738 needed += elem_size; 1739 } 1740 mutex_exit(p->p_lock); 1741 1742 /* Drop reference to process. */ 1743 mutex_enter(proc_lock); 1744 rw_exit(&p->p_reflock); 1745 } 1746 mutex_exit(proc_lock); 1747 } else { 1748 mutex_enter(proc_lock); 1749 p = p_find(pid, PFIND_LOCKED); 1750 if (p == NULL) { 1751 error = ESRCH; 1752 mutex_exit(proc_lock); 1753 goto cleanup; 1754 } 1755 /* Grab a hold on the process. */ 1756 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1757 mutex_exit(proc_lock); 1758 if (!gotit) { 1759 error = ESRCH; 1760 goto cleanup; 1761 } 1762 1763 mutex_enter(p->p_lock); 1764 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1765 if (buflen >= elem_size && elem_count > 0) { 1766 lwp_lock(l2); 1767 fill_lwp(l2, &klwp); 1768 lwp_unlock(l2); 1769 mutex_exit(p->p_lock); 1770 /* 1771 * Copy out elem_size, but not larger than 1772 * the size of a struct kinfo_proc2. 1773 */ 1774 error = dcopyout(l, &klwp, dp, 1775 min(sizeof(klwp), elem_size)); 1776 if (error) { 1777 rw_exit(&p->p_reflock); 1778 goto cleanup; 1779 } 1780 mutex_enter(p->p_lock); 1781 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1782 if (l2 == l3) 1783 break; 1784 } 1785 if (l3 == NULL) { 1786 mutex_exit(p->p_lock); 1787 rw_exit(&p->p_reflock); 1788 error = EAGAIN; 1789 goto cleanup; 1790 } 1791 dp += elem_size; 1792 buflen -= elem_size; 1793 elem_count--; 1794 } 1795 needed += elem_size; 1796 } 1797 mutex_exit(p->p_lock); 1798 1799 /* Drop reference to process. */ 1800 rw_exit(&p->p_reflock); 1801 } 1802 1803 if (where != NULL) { 1804 *oldlenp = dp - where; 1805 if (needed > *oldlenp) { 1806 sysctl_relock(); 1807 return (ENOMEM); 1808 } 1809 } else { 1810 needed += KERN_LWPSLOP; 1811 *oldlenp = needed; 1812 } 1813 error = 0; 1814 cleanup: 1815 sysctl_relock(); 1816 return (error); 1817 } 1818 1819 /* 1820 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1821 * given value is not too large or two small, and is at least one 1822 * timer tick if not zero. 1823 */ 1824 static int 1825 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1826 { 1827 /* userland sees value in ms, internally is in ticks */ 1828 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1829 int error, timo, lsleep; 1830 struct sysctlnode node; 1831 1832 lsleep = forkfsleep * 1000 / hz; 1833 node = *rnode; 1834 node.sysctl_data = &lsleep; 1835 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1836 if (error || newp == NULL) 1837 return (error); 1838 1839 /* refuse negative values, and overly 'long time' */ 1840 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1841 return (EINVAL); 1842 1843 timo = mstohz(lsleep); 1844 1845 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1846 if (lsleep != 0 && timo == 0) 1847 forkfsleep = 1; 1848 else 1849 forkfsleep = timo; 1850 1851 return (0); 1852 } 1853 1854 /* 1855 * sysctl helper routine for kern.root_partition 1856 */ 1857 static int 1858 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1859 { 1860 int rootpart = DISKPART(rootdev); 1861 struct sysctlnode node = *rnode; 1862 1863 node.sysctl_data = &rootpart; 1864 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1865 } 1866 1867 /* 1868 * sysctl helper function for kern.drivers 1869 */ 1870 static int 1871 sysctl_kern_drivers(SYSCTLFN_ARGS) 1872 { 1873 int error; 1874 size_t buflen; 1875 struct kinfo_drivers kd; 1876 char *start, *where; 1877 const char *dname; 1878 int i; 1879 extern struct devsw_conv *devsw_conv; 1880 extern int max_devsw_convs; 1881 1882 if (newp != NULL || namelen != 0) 1883 return (EINVAL); 1884 1885 start = where = oldp; 1886 buflen = *oldlenp; 1887 if (where == NULL) { 1888 *oldlenp = max_devsw_convs * sizeof kd; 1889 return 0; 1890 } 1891 1892 /* 1893 * An array of kinfo_drivers structures 1894 */ 1895 error = 0; 1896 sysctl_unlock(); 1897 mutex_enter(&specfs_lock); 1898 for (i = 0; i < max_devsw_convs; i++) { 1899 dname = devsw_conv[i].d_name; 1900 if (dname == NULL) 1901 continue; 1902 if (buflen < sizeof kd) { 1903 error = ENOMEM; 1904 break; 1905 } 1906 memset(&kd, 0, sizeof(kd)); 1907 kd.d_bmajor = devsw_conv[i].d_bmajor; 1908 kd.d_cmajor = devsw_conv[i].d_cmajor; 1909 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1910 mutex_exit(&specfs_lock); 1911 error = dcopyout(l, &kd, where, sizeof kd); 1912 mutex_enter(&specfs_lock); 1913 if (error != 0) 1914 break; 1915 buflen -= sizeof kd; 1916 where += sizeof kd; 1917 } 1918 mutex_exit(&specfs_lock); 1919 sysctl_relock(); 1920 *oldlenp = where - start; 1921 return error; 1922 } 1923 1924 /* 1925 * sysctl helper function for kern.file2 1926 */ 1927 static int 1928 sysctl_kern_file2(SYSCTLFN_ARGS) 1929 { 1930 struct proc *p; 1931 struct file *fp, *tp, *np; 1932 struct filedesc *fd; 1933 struct kinfo_file kf; 1934 char *dp; 1935 u_int i, op; 1936 size_t len, needed, elem_size, out_size; 1937 int error, arg, elem_count; 1938 fdfile_t *ff; 1939 1940 if (namelen == 1 && name[0] == CTL_QUERY) 1941 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1942 1943 if (namelen != 4) 1944 return (EINVAL); 1945 1946 error = 0; 1947 dp = oldp; 1948 len = (oldp != NULL) ? *oldlenp : 0; 1949 op = name[0]; 1950 arg = name[1]; 1951 elem_size = name[2]; 1952 elem_count = name[3]; 1953 out_size = MIN(sizeof(kf), elem_size); 1954 needed = 0; 1955 1956 if (elem_size < 1 || elem_count < 0) 1957 return (EINVAL); 1958 1959 switch (op) { 1960 case KERN_FILE_BYFILE: 1961 /* 1962 * doesn't use arg so it must be zero 1963 */ 1964 if (arg != 0) 1965 return (EINVAL); 1966 sysctl_unlock(); 1967 /* 1968 * allocate dummy file descriptor to make position in list 1969 */ 1970 if ((tp = fgetdummy()) == NULL) { 1971 sysctl_relock(); 1972 return ENOMEM; 1973 } 1974 mutex_enter(&filelist_lock); 1975 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1976 np = LIST_NEXT(fp, f_list); 1977 mutex_enter(&fp->f_lock); 1978 if (fp->f_count == 0) { 1979 mutex_exit(&fp->f_lock); 1980 continue; 1981 } 1982 /* 1983 * XXX Need to prevent that from being an alternative 1984 * XXX way for getting process information. 1985 */ 1986 if (kauth_authorize_generic(l->l_cred, 1987 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 1988 mutex_exit(&fp->f_lock); 1989 continue; 1990 } 1991 if (len >= elem_size && elem_count > 0) { 1992 fill_file(&kf, fp, NULL, 0, 0); 1993 LIST_INSERT_AFTER(fp, tp, f_list); 1994 mutex_exit(&fp->f_lock); 1995 mutex_exit(&filelist_lock); 1996 error = dcopyout(l, &kf, dp, out_size); 1997 mutex_enter(&filelist_lock); 1998 np = LIST_NEXT(tp, f_list); 1999 LIST_REMOVE(tp, f_list); 2000 if (error) { 2001 break; 2002 } 2003 dp += elem_size; 2004 len -= elem_size; 2005 } else { 2006 mutex_exit(&fp->f_lock); 2007 } 2008 needed += elem_size; 2009 if (elem_count > 0) { 2010 if (elem_count != INT_MAX) 2011 elem_count--; 2012 } 2013 } 2014 mutex_exit(&filelist_lock); 2015 fputdummy(tp); 2016 sysctl_relock(); 2017 break; 2018 case KERN_FILE_BYPID: 2019 if (arg < -1) 2020 /* -1 means all processes */ 2021 return (EINVAL); 2022 sysctl_unlock(); 2023 mutex_enter(proc_lock); 2024 PROCLIST_FOREACH(p, &allproc) { 2025 if (p->p_stat == SIDL) { 2026 /* skip embryonic processes */ 2027 continue; 2028 } 2029 if (arg > 0 && p->p_pid != arg) { 2030 /* pick only the one we want */ 2031 /* XXX want 0 to mean "kernel files" */ 2032 continue; 2033 } 2034 mutex_enter(p->p_lock); 2035 error = kauth_authorize_process(l->l_cred, 2036 KAUTH_PROCESS_CANSEE, p, 2037 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_OPENFILES), 2038 NULL, NULL); 2039 mutex_exit(p->p_lock); 2040 if (error != 0) { 2041 /* 2042 * Don't leak kauth retval if we're silently 2043 * skipping this entry. 2044 */ 2045 error = 0; 2046 continue; 2047 } 2048 2049 /* 2050 * Grab a hold on the process. 2051 */ 2052 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 2053 continue; 2054 } 2055 mutex_exit(proc_lock); 2056 2057 /* XXX Do we need to check permission per file? */ 2058 fd = p->p_fd; 2059 mutex_enter(&fd->fd_lock); 2060 for (i = 0; i < fd->fd_nfiles; i++) { 2061 if ((ff = fd->fd_ofiles[i]) == NULL) { 2062 continue; 2063 } 2064 mutex_enter(&ff->ff_lock); 2065 if ((fp = ff->ff_file) == NULL) { 2066 mutex_exit(&ff->ff_lock); 2067 continue; 2068 } 2069 if (len >= elem_size && elem_count > 0) { 2070 mutex_enter(&fp->f_lock); 2071 fill_file(&kf, fp, ff, i, p->p_pid); 2072 mutex_exit(&fp->f_lock); 2073 mutex_exit(&ff->ff_lock); 2074 mutex_exit(&fd->fd_lock); 2075 error = dcopyout(l, &kf, dp, out_size); 2076 mutex_enter(&fd->fd_lock); 2077 if (error) 2078 break; 2079 dp += elem_size; 2080 len -= elem_size; 2081 } else { 2082 mutex_exit(&ff->ff_lock); 2083 } 2084 needed += elem_size; 2085 if (elem_count > 0) { 2086 if (elem_count != INT_MAX) 2087 elem_count--; 2088 } 2089 } 2090 mutex_exit(&fd->fd_lock); 2091 2092 /* 2093 * Release reference to process. 2094 */ 2095 mutex_enter(proc_lock); 2096 rw_exit(&p->p_reflock); 2097 } 2098 mutex_exit(proc_lock); 2099 sysctl_relock(); 2100 break; 2101 default: 2102 return (EINVAL); 2103 } 2104 2105 if (oldp == NULL) 2106 needed += KERN_FILESLOP * elem_size; 2107 *oldlenp = needed; 2108 2109 return (error); 2110 } 2111 2112 static void 2113 fill_file(struct kinfo_file *kp, const file_t *fp, const fdfile_t *ff, 2114 int i, pid_t pid) 2115 { 2116 2117 memset(kp, 0, sizeof(*kp)); 2118 2119 kp->ki_fileaddr = PTRTOUINT64(fp); 2120 kp->ki_flag = fp->f_flag; 2121 kp->ki_iflags = 0; 2122 kp->ki_ftype = fp->f_type; 2123 kp->ki_count = fp->f_count; 2124 kp->ki_msgcount = fp->f_msgcount; 2125 kp->ki_fucred = PTRTOUINT64(fp->f_cred); 2126 kp->ki_fuid = kauth_cred_geteuid(fp->f_cred); 2127 kp->ki_fgid = kauth_cred_getegid(fp->f_cred); 2128 kp->ki_fops = PTRTOUINT64(fp->f_ops); 2129 kp->ki_foffset = fp->f_offset; 2130 kp->ki_fdata = PTRTOUINT64(fp->f_data); 2131 2132 /* vnode information to glue this file to something */ 2133 if (fp->f_type == DTYPE_VNODE) { 2134 struct vnode *vp = (struct vnode *)fp->f_data; 2135 2136 kp->ki_vun = PTRTOUINT64(vp->v_un.vu_socket); 2137 kp->ki_vsize = vp->v_size; 2138 kp->ki_vtype = vp->v_type; 2139 kp->ki_vtag = vp->v_tag; 2140 kp->ki_vdata = PTRTOUINT64(vp->v_data); 2141 } 2142 2143 /* process information when retrieved via KERN_FILE_BYPID */ 2144 if (ff != NULL) { 2145 kp->ki_pid = pid; 2146 kp->ki_fd = i; 2147 kp->ki_ofileflags = ff->ff_exclose; 2148 kp->ki_usecount = ff->ff_refcnt; 2149 } 2150 } 2151 2152 static int 2153 sysctl_doeproc(SYSCTLFN_ARGS) 2154 { 2155 union { 2156 struct kinfo_proc kproc; 2157 struct kinfo_proc2 kproc2; 2158 } *kbuf; 2159 struct proc *p, *next, *marker; 2160 char *where, *dp; 2161 int type, op, arg, error; 2162 u_int elem_size, kelem_size, elem_count; 2163 size_t buflen, needed; 2164 bool match, zombie, mmmbrains; 2165 2166 if (namelen == 1 && name[0] == CTL_QUERY) 2167 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2168 2169 dp = where = oldp; 2170 buflen = where != NULL ? *oldlenp : 0; 2171 error = 0; 2172 needed = 0; 2173 type = rnode->sysctl_num; 2174 2175 if (type == KERN_PROC) { 2176 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 2177 return (EINVAL); 2178 op = name[0]; 2179 if (op != KERN_PROC_ALL) 2180 arg = name[1]; 2181 else 2182 arg = 0; /* Quell compiler warning */ 2183 elem_count = 0; /* Ditto */ 2184 kelem_size = elem_size = sizeof(kbuf->kproc); 2185 } else { 2186 if (namelen != 4) 2187 return (EINVAL); 2188 op = name[0]; 2189 arg = name[1]; 2190 elem_size = name[2]; 2191 elem_count = name[3]; 2192 kelem_size = sizeof(kbuf->kproc2); 2193 } 2194 2195 sysctl_unlock(); 2196 2197 kbuf = kmem_alloc(sizeof(*kbuf), KM_SLEEP); 2198 marker = kmem_alloc(sizeof(*marker), KM_SLEEP); 2199 marker->p_flag = PK_MARKER; 2200 2201 mutex_enter(proc_lock); 2202 mmmbrains = false; 2203 for (p = LIST_FIRST(&allproc);; p = next) { 2204 if (p == NULL) { 2205 if (!mmmbrains) { 2206 p = LIST_FIRST(&zombproc); 2207 mmmbrains = true; 2208 } 2209 if (p == NULL) 2210 break; 2211 } 2212 next = LIST_NEXT(p, p_list); 2213 if ((p->p_flag & PK_MARKER) != 0) 2214 continue; 2215 2216 /* 2217 * Skip embryonic processes. 2218 */ 2219 if (p->p_stat == SIDL) 2220 continue; 2221 2222 mutex_enter(p->p_lock); 2223 error = kauth_authorize_process(l->l_cred, 2224 KAUTH_PROCESS_CANSEE, p, 2225 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENTRY), NULL, NULL); 2226 if (error != 0) { 2227 mutex_exit(p->p_lock); 2228 continue; 2229 } 2230 2231 /* 2232 * TODO - make more efficient (see notes below). 2233 * do by session. 2234 */ 2235 switch (op) { 2236 case KERN_PROC_PID: 2237 /* could do this with just a lookup */ 2238 match = (p->p_pid == (pid_t)arg); 2239 break; 2240 2241 case KERN_PROC_PGRP: 2242 /* could do this by traversing pgrp */ 2243 match = (p->p_pgrp->pg_id == (pid_t)arg); 2244 break; 2245 2246 case KERN_PROC_SESSION: 2247 match = (p->p_session->s_sid == (pid_t)arg); 2248 break; 2249 2250 case KERN_PROC_TTY: 2251 match = true; 2252 if (arg == (int) KERN_PROC_TTY_REVOKE) { 2253 if ((p->p_lflag & PL_CONTROLT) == 0 || 2254 p->p_session->s_ttyp == NULL || 2255 p->p_session->s_ttyvp != NULL) { 2256 match = false; 2257 } 2258 } else if ((p->p_lflag & PL_CONTROLT) == 0 || 2259 p->p_session->s_ttyp == NULL) { 2260 if ((dev_t)arg != KERN_PROC_TTY_NODEV) { 2261 match = false; 2262 } 2263 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) { 2264 match = false; 2265 } 2266 break; 2267 2268 case KERN_PROC_UID: 2269 match = (kauth_cred_geteuid(p->p_cred) == (uid_t)arg); 2270 break; 2271 2272 case KERN_PROC_RUID: 2273 match = (kauth_cred_getuid(p->p_cred) == (uid_t)arg); 2274 break; 2275 2276 case KERN_PROC_GID: 2277 match = (kauth_cred_getegid(p->p_cred) == (uid_t)arg); 2278 break; 2279 2280 case KERN_PROC_RGID: 2281 match = (kauth_cred_getgid(p->p_cred) == (uid_t)arg); 2282 break; 2283 2284 case KERN_PROC_ALL: 2285 match = true; 2286 /* allow everything */ 2287 break; 2288 2289 default: 2290 error = EINVAL; 2291 mutex_exit(p->p_lock); 2292 goto cleanup; 2293 } 2294 if (!match) { 2295 mutex_exit(p->p_lock); 2296 continue; 2297 } 2298 2299 /* 2300 * Grab a hold on the process. 2301 */ 2302 if (mmmbrains) { 2303 zombie = true; 2304 } else { 2305 zombie = !rw_tryenter(&p->p_reflock, RW_READER); 2306 } 2307 if (zombie) { 2308 LIST_INSERT_AFTER(p, marker, p_list); 2309 } 2310 2311 if (buflen >= elem_size && 2312 (type == KERN_PROC || elem_count > 0)) { 2313 if (type == KERN_PROC) { 2314 kbuf->kproc.kp_proc = *p; 2315 fill_eproc(p, &kbuf->kproc.kp_eproc, zombie); 2316 } else { 2317 fill_kproc2(p, &kbuf->kproc2, zombie); 2318 elem_count--; 2319 } 2320 mutex_exit(p->p_lock); 2321 mutex_exit(proc_lock); 2322 /* 2323 * Copy out elem_size, but not larger than kelem_size 2324 */ 2325 error = dcopyout(l, kbuf, dp, 2326 min(kelem_size, elem_size)); 2327 mutex_enter(proc_lock); 2328 if (error) { 2329 goto bah; 2330 } 2331 dp += elem_size; 2332 buflen -= elem_size; 2333 } else { 2334 mutex_exit(p->p_lock); 2335 } 2336 needed += elem_size; 2337 2338 /* 2339 * Release reference to process. 2340 */ 2341 if (zombie) { 2342 next = LIST_NEXT(marker, p_list); 2343 LIST_REMOVE(marker, p_list); 2344 } else { 2345 rw_exit(&p->p_reflock); 2346 } 2347 } 2348 mutex_exit(proc_lock); 2349 2350 if (where != NULL) { 2351 *oldlenp = dp - where; 2352 if (needed > *oldlenp) { 2353 error = ENOMEM; 2354 goto out; 2355 } 2356 } else { 2357 needed += KERN_PROCSLOP; 2358 *oldlenp = needed; 2359 } 2360 if (kbuf) 2361 kmem_free(kbuf, sizeof(*kbuf)); 2362 if (marker) 2363 kmem_free(marker, sizeof(*marker)); 2364 sysctl_relock(); 2365 return 0; 2366 bah: 2367 if (zombie) 2368 LIST_REMOVE(marker, p_list); 2369 else 2370 rw_exit(&p->p_reflock); 2371 cleanup: 2372 mutex_exit(proc_lock); 2373 out: 2374 if (kbuf) 2375 kmem_free(kbuf, sizeof(*kbuf)); 2376 if (marker) 2377 kmem_free(marker, sizeof(*marker)); 2378 sysctl_relock(); 2379 return error; 2380 } 2381 2382 /* 2383 * sysctl helper routine for kern.proc_args pseudo-subtree. 2384 */ 2385 static int 2386 sysctl_kern_proc_args(SYSCTLFN_ARGS) 2387 { 2388 struct ps_strings pss; 2389 struct proc *p; 2390 size_t len, i; 2391 struct uio auio; 2392 struct iovec aiov; 2393 pid_t pid; 2394 int nargv, type, error, argvlen; 2395 char *arg; 2396 char **argv = NULL; 2397 char *tmp; 2398 struct vmspace *vmspace; 2399 vaddr_t psstr_addr; 2400 vaddr_t offsetn; 2401 vaddr_t offsetv; 2402 2403 if (namelen == 1 && name[0] == CTL_QUERY) 2404 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2405 2406 if (newp != NULL || namelen != 2) 2407 return (EINVAL); 2408 pid = name[0]; 2409 type = name[1]; 2410 argv = NULL; 2411 argvlen = 0; 2412 2413 switch (type) { 2414 case KERN_PROC_ARGV: 2415 case KERN_PROC_NARGV: 2416 case KERN_PROC_ENV: 2417 case KERN_PROC_NENV: 2418 /* ok */ 2419 break; 2420 default: 2421 return (EINVAL); 2422 } 2423 2424 sysctl_unlock(); 2425 2426 /* check pid */ 2427 mutex_enter(proc_lock); 2428 if ((p = p_find(pid, PFIND_LOCKED)) == NULL) { 2429 error = EINVAL; 2430 goto out_locked; 2431 } 2432 mutex_enter(p->p_lock); 2433 2434 /* Check permission. */ 2435 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 2436 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2437 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ARGS), NULL, NULL); 2438 else if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) 2439 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2440 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENV), NULL, NULL); 2441 else 2442 error = EINVAL; /* XXXGCC */ 2443 if (error) { 2444 mutex_exit(p->p_lock); 2445 goto out_locked; 2446 } 2447 2448 if (oldp == NULL) { 2449 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 2450 *oldlenp = sizeof (int); 2451 else 2452 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 2453 error = 0; 2454 mutex_exit(p->p_lock); 2455 goto out_locked; 2456 } 2457 2458 /* 2459 * Zombies don't have a stack, so we can't read their psstrings. 2460 * System processes also don't have a user stack. 2461 */ 2462 if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) { 2463 error = EINVAL; 2464 mutex_exit(p->p_lock); 2465 goto out_locked; 2466 } 2467 2468 /* 2469 * Lock the process down in memory. 2470 */ 2471 psstr_addr = (vaddr_t)p->p_psstr; 2472 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) { 2473 offsetn = p->p_psnargv; 2474 offsetv = p->p_psargv; 2475 } else { 2476 offsetn = p->p_psnenv; 2477 offsetv = p->p_psenv; 2478 } 2479 vmspace = p->p_vmspace; 2480 uvmspace_addref(vmspace); 2481 mutex_exit(p->p_lock); 2482 mutex_exit(proc_lock); 2483 2484 /* 2485 * Allocate a temporary buffer to hold the arguments. 2486 */ 2487 arg = kmem_alloc(PAGE_SIZE, KM_SLEEP); 2488 2489 /* 2490 * Read in the ps_strings structure. 2491 */ 2492 aiov.iov_base = &pss; 2493 aiov.iov_len = sizeof(pss); 2494 auio.uio_iov = &aiov; 2495 auio.uio_iovcnt = 1; 2496 auio.uio_offset = psstr_addr; 2497 auio.uio_resid = sizeof(pss); 2498 auio.uio_rw = UIO_READ; 2499 UIO_SETUP_SYSSPACE(&auio); 2500 error = uvm_io(&vmspace->vm_map, &auio); 2501 if (error) 2502 goto done; 2503 2504 memcpy(&nargv, (char *)&pss + offsetn, sizeof(nargv)); 2505 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 2506 error = dcopyout(l, &nargv, oldp, sizeof(nargv)); 2507 *oldlenp = sizeof(nargv); 2508 goto done; 2509 } 2510 /* 2511 * Now read the address of the argument vector. 2512 */ 2513 switch (type) { 2514 case KERN_PROC_ARGV: 2515 /* FALLTHROUGH */ 2516 case KERN_PROC_ENV: 2517 memcpy(&tmp, (char *)&pss + offsetv, sizeof(tmp)); 2518 break; 2519 default: 2520 error = EINVAL; 2521 goto done; 2522 } 2523 2524 #ifdef COMPAT_NETBSD32 2525 if (p->p_flag & PK_32) 2526 len = sizeof(netbsd32_charp) * nargv; 2527 else 2528 #endif 2529 len = sizeof(char *) * nargv; 2530 2531 if (nargv < 0 || len > ARG_MAX || len < (size_t)nargv) { 2532 error = EINVAL; 2533 goto done; 2534 } 2535 2536 if ((argvlen = len) != 0) 2537 argv = kmem_alloc(len, KM_SLEEP); 2538 2539 aiov.iov_base = argv; 2540 aiov.iov_len = len; 2541 auio.uio_iov = &aiov; 2542 auio.uio_iovcnt = 1; 2543 auio.uio_offset = (off_t)(unsigned long)tmp; 2544 auio.uio_resid = len; 2545 auio.uio_rw = UIO_READ; 2546 UIO_SETUP_SYSSPACE(&auio); 2547 error = uvm_io(&vmspace->vm_map, &auio); 2548 if (error) 2549 goto done; 2550 2551 /* 2552 * Now copy each string. 2553 */ 2554 len = 0; /* bytes written to user buffer */ 2555 for (i = 0; i < nargv; i++) { 2556 int finished = 0; 2557 vaddr_t base; 2558 size_t xlen; 2559 int j; 2560 2561 #ifdef COMPAT_NETBSD32 2562 if (p->p_flag & PK_32) { 2563 netbsd32_charp *argv32; 2564 2565 argv32 = (netbsd32_charp *)argv; 2566 base = (vaddr_t)NETBSD32PTR64(argv32[i]); 2567 } else 2568 #endif 2569 base = (vaddr_t)argv[i]; 2570 2571 /* 2572 * The program has messed around with its arguments, 2573 * possibly deleting some, and replacing them with 2574 * NULL's. Treat this as the last argument and not 2575 * a failure. 2576 */ 2577 if (base == 0) 2578 break; 2579 2580 while (!finished) { 2581 xlen = PAGE_SIZE - (base & PAGE_MASK); 2582 2583 aiov.iov_base = arg; 2584 aiov.iov_len = PAGE_SIZE; 2585 auio.uio_iov = &aiov; 2586 auio.uio_iovcnt = 1; 2587 auio.uio_offset = base; 2588 auio.uio_resid = xlen; 2589 auio.uio_rw = UIO_READ; 2590 UIO_SETUP_SYSSPACE(&auio); 2591 error = uvm_io(&vmspace->vm_map, &auio); 2592 if (error) 2593 goto done; 2594 2595 /* Look for the end of the string */ 2596 for (j = 0; j < xlen; j++) { 2597 if (arg[j] == '\0') { 2598 xlen = j + 1; 2599 finished = 1; 2600 break; 2601 } 2602 } 2603 2604 /* Check for user buffer overflow */ 2605 if (len + xlen > *oldlenp) { 2606 finished = 1; 2607 if (len > *oldlenp) 2608 xlen = 0; 2609 else 2610 xlen = *oldlenp - len; 2611 } 2612 2613 /* Copyout the page */ 2614 error = dcopyout(l, arg, (char *)oldp + len, xlen); 2615 if (error) 2616 goto done; 2617 2618 len += xlen; 2619 base += xlen; 2620 } 2621 } 2622 *oldlenp = len; 2623 2624 done: 2625 if (argvlen != 0) 2626 kmem_free(argv, argvlen); 2627 uvmspace_free(vmspace); 2628 kmem_free(arg, PAGE_SIZE); 2629 sysctl_relock(); 2630 return error; 2631 2632 out_locked: 2633 mutex_exit(proc_lock); 2634 sysctl_relock(); 2635 return error; 2636 } 2637 2638 static int 2639 sysctl_security_setidcore(SYSCTLFN_ARGS) 2640 { 2641 int newsize, error; 2642 struct sysctlnode node; 2643 2644 node = *rnode; 2645 node.sysctl_data = &newsize; 2646 newsize = *(int *)rnode->sysctl_data; 2647 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2648 if (error || newp == NULL) 2649 return error; 2650 2651 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2652 0, NULL, NULL, NULL)) 2653 return (EPERM); 2654 2655 *(int *)rnode->sysctl_data = newsize; 2656 2657 return 0; 2658 } 2659 2660 static int 2661 sysctl_security_setidcorename(SYSCTLFN_ARGS) 2662 { 2663 int error; 2664 char *newsetidcorename; 2665 struct sysctlnode node; 2666 2667 newsetidcorename = PNBUF_GET(); 2668 node = *rnode; 2669 node.sysctl_data = newsetidcorename; 2670 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 2671 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2672 if (error || newp == NULL) { 2673 goto out; 2674 } 2675 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2676 0, NULL, NULL, NULL)) { 2677 error = EPERM; 2678 goto out; 2679 } 2680 if (strlen(newsetidcorename) == 0) { 2681 error = EINVAL; 2682 goto out; 2683 } 2684 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 2685 out: 2686 PNBUF_PUT(newsetidcorename); 2687 return error; 2688 } 2689 2690 /* 2691 * sysctl helper routine for kern.cp_id node. Maps cpus to their 2692 * cpuids. 2693 */ 2694 static int 2695 sysctl_kern_cpid(SYSCTLFN_ARGS) 2696 { 2697 struct sysctlnode node = *rnode; 2698 uint64_t *cp_id = NULL; 2699 int error, n = ncpu; 2700 struct cpu_info *ci; 2701 CPU_INFO_ITERATOR cii; 2702 2703 /* 2704 * Here you may either retrieve a single cpu id or the whole 2705 * set. The size you get back when probing depends on what 2706 * you ask for. 2707 */ 2708 switch (namelen) { 2709 case 0: 2710 node.sysctl_size = n * sizeof(uint64_t); 2711 n = -2; /* ALL */ 2712 break; 2713 case 1: 2714 if (name[0] < 0 || name[0] >= n) 2715 return (ENOENT); /* ENOSUCHPROCESSOR */ 2716 node.sysctl_size = sizeof(uint64_t); 2717 n = name[0]; 2718 /* 2719 * adjust these so that sysctl_lookup() will be happy 2720 */ 2721 name++; 2722 namelen--; 2723 break; 2724 default: 2725 return (EINVAL); 2726 } 2727 2728 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 2729 if (cp_id == NULL) 2730 return (ENOMEM); 2731 node.sysctl_data = cp_id; 2732 memset(cp_id, 0, node.sysctl_size); 2733 2734 for (CPU_INFO_FOREACH(cii, ci)) { 2735 if (n <= 0) 2736 cp_id[0] = cpu_index(ci); 2737 /* 2738 * if a specific processor was requested and we just 2739 * did it, we're done here 2740 */ 2741 if (n == 0) 2742 break; 2743 /* 2744 * if doing "all", skip to next cp_id slot for next processor 2745 */ 2746 if (n == -2) 2747 cp_id++; 2748 /* 2749 * if we're doing a specific processor, we're one 2750 * processor closer 2751 */ 2752 if (n > 0) 2753 n--; 2754 } 2755 2756 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2757 kmem_free(node.sysctl_data, node.sysctl_size); 2758 return (error); 2759 } 2760 2761 /* 2762 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 2763 * calculate on the fly taking into account integer overflow and the 2764 * current wired count. 2765 */ 2766 static int 2767 sysctl_hw_usermem(SYSCTLFN_ARGS) 2768 { 2769 u_int ui; 2770 u_quad_t uq; 2771 struct sysctlnode node; 2772 2773 node = *rnode; 2774 switch (rnode->sysctl_num) { 2775 case HW_USERMEM: 2776 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 2777 ui = UINT_MAX; 2778 else 2779 ui *= PAGE_SIZE; 2780 node.sysctl_data = &ui; 2781 break; 2782 case HW_USERMEM64: 2783 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2784 node.sysctl_data = &uq; 2785 break; 2786 default: 2787 return (EINVAL); 2788 } 2789 2790 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2791 } 2792 2793 /* 2794 * sysctl helper routine for kern.cnmagic node. Pulls the old value 2795 * out, encoded, and stuffs the new value in for decoding. 2796 */ 2797 static int 2798 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2799 { 2800 char magic[CNS_LEN]; 2801 int error; 2802 struct sysctlnode node; 2803 2804 if (oldp) 2805 cn_get_magic(magic, CNS_LEN); 2806 node = *rnode; 2807 node.sysctl_data = &magic[0]; 2808 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2809 if (error || newp == NULL) 2810 return (error); 2811 2812 return (cn_set_magic(magic)); 2813 } 2814 2815 /* 2816 * ******************************************************************** 2817 * section 3: public helper routines that are used for more than one 2818 * node 2819 * ******************************************************************** 2820 */ 2821 2822 /* 2823 * sysctl helper routine for the kern.root_device node and some ports' 2824 * machdep.root_device nodes. 2825 */ 2826 int 2827 sysctl_root_device(SYSCTLFN_ARGS) 2828 { 2829 struct sysctlnode node; 2830 2831 node = *rnode; 2832 node.sysctl_data = root_device->dv_xname; 2833 node.sysctl_size = strlen(device_xname(root_device)) + 1; 2834 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2835 } 2836 2837 /* 2838 * sysctl helper routine for kern.consdev, dependent on the current 2839 * state of the console. Also used for machdep.console_device on some 2840 * ports. 2841 */ 2842 int 2843 sysctl_consdev(SYSCTLFN_ARGS) 2844 { 2845 dev_t consdev; 2846 struct sysctlnode node; 2847 2848 if (cn_tab != NULL) 2849 consdev = cn_tab->cn_dev; 2850 else 2851 consdev = NODEV; 2852 node = *rnode; 2853 node.sysctl_data = &consdev; 2854 node.sysctl_size = sizeof(consdev); 2855 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2856 } 2857 2858 /* 2859 * ******************************************************************** 2860 * section 4: support for some helpers 2861 * ******************************************************************** 2862 */ 2863 /* 2864 * Find the most ``active'' lwp of a process and return it for ps display 2865 * purposes 2866 */ 2867 static struct lwp * 2868 proc_active_lwp(struct proc *p) 2869 { 2870 static const int ostat[] = { 2871 0, 2872 2, /* LSIDL */ 2873 6, /* LSRUN */ 2874 5, /* LSSLEEP */ 2875 4, /* LSSTOP */ 2876 0, /* LSZOMB */ 2877 1, /* LSDEAD */ 2878 7, /* LSONPROC */ 2879 3 /* LSSUSPENDED */ 2880 }; 2881 2882 struct lwp *l, *lp = NULL; 2883 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 2884 KASSERT(l->l_stat >= 0 && l->l_stat < __arraycount(ostat)); 2885 if (lp == NULL || 2886 ostat[l->l_stat] > ostat[lp->l_stat] || 2887 (ostat[l->l_stat] == ostat[lp->l_stat] && 2888 l->l_cpticks > lp->l_cpticks)) { 2889 lp = l; 2890 continue; 2891 } 2892 } 2893 return lp; 2894 } 2895 2896 2897 /* 2898 * Fill in a kinfo_proc2 structure for the specified process. 2899 */ 2900 static void 2901 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki, bool zombie) 2902 { 2903 struct tty *tp; 2904 struct lwp *l, *l2; 2905 struct timeval ut, st, rt; 2906 sigset_t ss1, ss2; 2907 struct rusage ru; 2908 struct vmspace *vm; 2909 2910 KASSERT(mutex_owned(proc_lock)); 2911 KASSERT(mutex_owned(p->p_lock)); 2912 2913 sigemptyset(&ss1); 2914 sigemptyset(&ss2); 2915 memset(ki, 0, sizeof(*ki)); 2916 2917 ki->p_paddr = PTRTOUINT64(p); 2918 ki->p_fd = PTRTOUINT64(p->p_fd); 2919 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2920 ki->p_stats = PTRTOUINT64(p->p_stats); 2921 ki->p_limit = PTRTOUINT64(p->p_limit); 2922 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2923 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2924 ki->p_sess = PTRTOUINT64(p->p_session); 2925 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2926 ki->p_ru = PTRTOUINT64(&p->p_stats->p_ru); 2927 ki->p_eflag = 0; 2928 ki->p_exitsig = p->p_exitsig; 2929 ki->p_flag = sysctl_map_flags(sysctl_flagmap, p->p_flag); 2930 ki->p_flag |= sysctl_map_flags(sysctl_sflagmap, p->p_sflag); 2931 ki->p_flag |= sysctl_map_flags(sysctl_slflagmap, p->p_slflag); 2932 ki->p_flag |= sysctl_map_flags(sysctl_lflagmap, p->p_lflag); 2933 ki->p_flag |= sysctl_map_flags(sysctl_stflagmap, p->p_stflag); 2934 ki->p_pid = p->p_pid; 2935 if (p->p_pptr) 2936 ki->p_ppid = p->p_pptr->p_pid; 2937 else 2938 ki->p_ppid = 0; 2939 ki->p_uid = kauth_cred_geteuid(p->p_cred); 2940 ki->p_ruid = kauth_cred_getuid(p->p_cred); 2941 ki->p_gid = kauth_cred_getegid(p->p_cred); 2942 ki->p_rgid = kauth_cred_getgid(p->p_cred); 2943 ki->p_svuid = kauth_cred_getsvuid(p->p_cred); 2944 ki->p_svgid = kauth_cred_getsvgid(p->p_cred); 2945 ki->p_ngroups = kauth_cred_ngroups(p->p_cred); 2946 kauth_cred_getgroups(p->p_cred, ki->p_groups, 2947 min(ki->p_ngroups, sizeof(ki->p_groups) / sizeof(ki->p_groups[0])), 2948 UIO_SYSSPACE); 2949 2950 ki->p_uticks = p->p_uticks; 2951 ki->p_sticks = p->p_sticks; 2952 ki->p_iticks = p->p_iticks; 2953 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2954 ki->p_tracep = PTRTOUINT64(p->p_tracep); 2955 ki->p_traceflag = p->p_traceflag; 2956 2957 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2958 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2959 2960 ki->p_cpticks = 0; 2961 ki->p_pctcpu = p->p_pctcpu; 2962 ki->p_estcpu = 0; 2963 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2964 ki->p_realstat = p->p_stat; 2965 ki->p_nice = p->p_nice; 2966 ki->p_xstat = p->p_xstat; 2967 ki->p_acflag = p->p_acflag; 2968 2969 strncpy(ki->p_comm, p->p_comm, 2970 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2971 strncpy(ki->p_ename, p->p_emul->e_name, sizeof(ki->p_ename)); 2972 2973 ki->p_nlwps = p->p_nlwps; 2974 ki->p_realflag = ki->p_flag; 2975 2976 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 2977 vm = p->p_vmspace; 2978 ki->p_vm_rssize = vm_resident_count(vm); 2979 ki->p_vm_tsize = vm->vm_tsize; 2980 ki->p_vm_dsize = vm->vm_dsize; 2981 ki->p_vm_ssize = vm->vm_ssize; 2982 ki->p_vm_vsize = vm->vm_map.size; 2983 /* 2984 * Since the stack is initially mapped mostly with 2985 * PROT_NONE and grown as needed, adjust the "mapped size" 2986 * to skip the unused stack portion. 2987 */ 2988 ki->p_vm_msize = 2989 atop(vm->vm_map.size) - vm->vm_issize + vm->vm_ssize; 2990 2991 /* Pick the primary (first) LWP */ 2992 l = proc_active_lwp(p); 2993 KASSERT(l != NULL); 2994 lwp_lock(l); 2995 ki->p_nrlwps = p->p_nrlwps; 2996 ki->p_forw = 0; 2997 ki->p_back = 0; 2998 ki->p_addr = PTRTOUINT64(l->l_addr); 2999 ki->p_stat = l->l_stat; 3000 ki->p_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3001 ki->p_swtime = l->l_swtime; 3002 ki->p_slptime = l->l_slptime; 3003 if (l->l_stat == LSONPROC) 3004 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3005 else 3006 ki->p_schedflags = 0; 3007 ki->p_holdcnt = l->l_holdcnt; 3008 ki->p_priority = lwp_eprio(l); 3009 ki->p_usrpri = l->l_priority; 3010 if (l->l_wchan) 3011 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 3012 ki->p_wchan = PTRTOUINT64(l->l_wchan); 3013 ki->p_cpuid = cpu_index(l->l_cpu); 3014 lwp_unlock(l); 3015 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 3016 /* This is hardly correct, but... */ 3017 sigplusset(&l->l_sigpend.sp_set, &ss1); 3018 sigplusset(&l->l_sigmask, &ss2); 3019 ki->p_cpticks += l->l_cpticks; 3020 ki->p_pctcpu += l->l_pctcpu; 3021 ki->p_estcpu += l->l_estcpu; 3022 } 3023 } 3024 sigplusset(&p->p_sigpend.sp_set, &ss2); 3025 memcpy(&ki->p_siglist, &ss1, sizeof(ki_sigset_t)); 3026 memcpy(&ki->p_sigmask, &ss2, sizeof(ki_sigset_t)); 3027 3028 if (p->p_session != NULL) { 3029 ki->p_sid = p->p_session->s_sid; 3030 ki->p__pgid = p->p_pgrp->pg_id; 3031 if (p->p_session->s_ttyvp) 3032 ki->p_eflag |= EPROC_CTTY; 3033 if (SESS_LEADER(p)) 3034 ki->p_eflag |= EPROC_SLEADER; 3035 strncpy(ki->p_login, p->p_session->s_login, 3036 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 3037 ki->p_jobc = p->p_pgrp->pg_jobc; 3038 if ((p->p_lflag & PL_CONTROLT) && (tp = p->p_session->s_ttyp)) { 3039 ki->p_tdev = tp->t_dev; 3040 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3041 ki->p_tsess = PTRTOUINT64(tp->t_session); 3042 } else { 3043 ki->p_tdev = NODEV; 3044 } 3045 } 3046 3047 if (!P_ZOMBIE(p) && !zombie) { 3048 ki->p_uvalid = 1; 3049 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 3050 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 3051 3052 calcru(p, &ut, &st, NULL, &rt); 3053 ki->p_rtime_sec = rt.tv_sec; 3054 ki->p_rtime_usec = rt.tv_usec; 3055 ki->p_uutime_sec = ut.tv_sec; 3056 ki->p_uutime_usec = ut.tv_usec; 3057 ki->p_ustime_sec = st.tv_sec; 3058 ki->p_ustime_usec = st.tv_usec; 3059 3060 memcpy(&ru, &p->p_stats->p_ru, sizeof(ru)); 3061 ki->p_uru_nvcsw = 0; 3062 ki->p_uru_nivcsw = 0; 3063 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 3064 ki->p_uru_nvcsw += (l2->l_ncsw - l2->l_nivcsw); 3065 ki->p_uru_nivcsw += l2->l_nivcsw; 3066 ruadd(&ru, &l2->l_ru); 3067 } 3068 ki->p_uru_maxrss = ru.ru_maxrss; 3069 ki->p_uru_ixrss = ru.ru_ixrss; 3070 ki->p_uru_idrss = ru.ru_idrss; 3071 ki->p_uru_isrss = ru.ru_isrss; 3072 ki->p_uru_minflt = ru.ru_minflt; 3073 ki->p_uru_majflt = ru.ru_majflt; 3074 ki->p_uru_nswap = ru.ru_nswap; 3075 ki->p_uru_inblock = ru.ru_inblock; 3076 ki->p_uru_oublock = ru.ru_oublock; 3077 ki->p_uru_msgsnd = ru.ru_msgsnd; 3078 ki->p_uru_msgrcv = ru.ru_msgrcv; 3079 ki->p_uru_nsignals = ru.ru_nsignals; 3080 3081 timeradd(&p->p_stats->p_cru.ru_utime, 3082 &p->p_stats->p_cru.ru_stime, &ut); 3083 ki->p_uctime_sec = ut.tv_sec; 3084 ki->p_uctime_usec = ut.tv_usec; 3085 } 3086 } 3087 3088 /* 3089 * Fill in a kinfo_lwp structure for the specified lwp. 3090 */ 3091 static void 3092 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 3093 { 3094 struct proc *p = l->l_proc; 3095 struct timeval tv; 3096 3097 KASSERT(lwp_locked(l, NULL)); 3098 3099 kl->l_forw = 0; 3100 kl->l_back = 0; 3101 kl->l_laddr = PTRTOUINT64(l); 3102 kl->l_addr = PTRTOUINT64(l->l_addr); 3103 kl->l_stat = l->l_stat; 3104 kl->l_lid = l->l_lid; 3105 kl->l_flag = sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 3106 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3107 3108 kl->l_swtime = l->l_swtime; 3109 kl->l_slptime = l->l_slptime; 3110 if (l->l_stat == LSONPROC) 3111 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3112 else 3113 kl->l_schedflags = 0; 3114 kl->l_holdcnt = l->l_holdcnt; 3115 kl->l_priority = lwp_eprio(l); 3116 kl->l_usrpri = l->l_priority; 3117 if (l->l_wchan) 3118 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 3119 kl->l_wchan = PTRTOUINT64(l->l_wchan); 3120 kl->l_cpuid = cpu_index(l->l_cpu); 3121 bintime2timeval(&l->l_rtime, &tv); 3122 kl->l_rtime_sec = tv.tv_sec; 3123 kl->l_rtime_usec = tv.tv_usec; 3124 kl->l_cpticks = l->l_cpticks; 3125 kl->l_pctcpu = l->l_pctcpu; 3126 kl->l_pid = p->p_pid; 3127 if (l->l_name == NULL) 3128 kl->l_name[0] = '\0'; 3129 else 3130 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 3131 } 3132 3133 /* 3134 * Fill in an eproc structure for the specified process. 3135 */ 3136 void 3137 fill_eproc(struct proc *p, struct eproc *ep, bool zombie) 3138 { 3139 struct tty *tp; 3140 struct lwp *l; 3141 3142 KASSERT(mutex_owned(proc_lock)); 3143 KASSERT(mutex_owned(p->p_lock)); 3144 3145 memset(ep, 0, sizeof(*ep)); 3146 3147 ep->e_paddr = p; 3148 ep->e_sess = p->p_session; 3149 if (p->p_cred) { 3150 kauth_cred_topcred(p->p_cred, &ep->e_pcred); 3151 kauth_cred_toucred(p->p_cred, &ep->e_ucred); 3152 } 3153 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3154 struct vmspace *vm = p->p_vmspace; 3155 3156 ep->e_vm.vm_rssize = vm_resident_count(vm); 3157 ep->e_vm.vm_tsize = vm->vm_tsize; 3158 ep->e_vm.vm_dsize = vm->vm_dsize; 3159 ep->e_vm.vm_ssize = vm->vm_ssize; 3160 ep->e_vm.vm_map.size = vm->vm_map.size; 3161 3162 /* Pick the primary (first) LWP */ 3163 l = proc_active_lwp(p); 3164 KASSERT(l != NULL); 3165 lwp_lock(l); 3166 if (l->l_wchan) 3167 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 3168 lwp_unlock(l); 3169 } 3170 if (p->p_pptr) 3171 ep->e_ppid = p->p_pptr->p_pid; 3172 if (p->p_pgrp && p->p_session) { 3173 ep->e_pgid = p->p_pgrp->pg_id; 3174 ep->e_jobc = p->p_pgrp->pg_jobc; 3175 ep->e_sid = p->p_session->s_sid; 3176 if ((p->p_lflag & PL_CONTROLT) && 3177 (tp = ep->e_sess->s_ttyp)) { 3178 ep->e_tdev = tp->t_dev; 3179 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3180 ep->e_tsess = tp->t_session; 3181 } else 3182 ep->e_tdev = NODEV; 3183 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 3184 if (SESS_LEADER(p)) 3185 ep->e_flag |= EPROC_SLEADER; 3186 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 3187 } 3188 ep->e_xsize = ep->e_xrssize = 0; 3189 ep->e_xccount = ep->e_xswrss = 0; 3190 } 3191 3192 u_int 3193 sysctl_map_flags(const u_int *map, u_int word) 3194 { 3195 u_int rv; 3196 3197 for (rv = 0; *map != 0; map += 2) 3198 if ((word & map[0]) != 0) 3199 rv |= map[1]; 3200 3201 return rv; 3202 } 3203
Indexes created Wed Oct 01 15:09:59 GMT 2025