init_sysctl.c revision 1.125.2.2
1 /* $NetBSD: init_sysctl.c,v 1.125.2.2 2008/11/01 21:22:26 christos 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 1.125.2.2 2008/11/01 21:22:26 christos Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_compat_netbsd32.h" 37 #include "opt_compat_netbsd.h" 38 #include "opt_sa.h" 39 #include "pty.h" 40 #include "rnd.h" 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/sysctl.h> 45 #include <sys/cpu.h> 46 #include <sys/errno.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/unistd.h> 50 #include <sys/disklabel.h> 51 #include <sys/rnd.h> 52 #include <sys/vnode.h> 53 #include <sys/mount.h> 54 #include <sys/namei.h> 55 #include <sys/msgbuf.h> 56 #include <dev/cons.h> 57 #include <sys/socketvar.h> 58 #include <sys/file.h> 59 #include <sys/filedesc.h> 60 #include <sys/tty.h> 61 #include <sys/malloc.h> 62 #include <sys/resource.h> 63 #include <sys/resourcevar.h> 64 #include <sys/exec.h> 65 #include <sys/conf.h> 66 #include <sys/device.h> 67 #include <sys/stat.h> 68 #include <sys/kauth.h> 69 #include <sys/ktrace.h> 70 #include <sys/ksem.h> 71 72 #include <miscfs/specfs/specdev.h> 73 74 #ifdef COMPAT_NETBSD32 75 #include <compat/netbsd32/netbsd32.h> 76 #endif 77 #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 int posix_semaphores; 88 int security_setidcore_dump; 89 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 90 uid_t security_setidcore_owner = 0; 91 gid_t security_setidcore_group = 0; 92 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 93 94 static const u_int sysctl_flagmap[] = { 95 PK_ADVLOCK, P_ADVLOCK, 96 PK_EXEC, P_EXEC, 97 PK_NOCLDWAIT, P_NOCLDWAIT, 98 PK_32, P_32, 99 PK_CLDSIGIGN, P_CLDSIGIGN, 100 PK_SUGID, P_SUGID, 101 0 102 }; 103 104 static const u_int sysctl_sflagmap[] = { 105 PS_NOCLDSTOP, P_NOCLDSTOP, 106 PS_WEXIT, P_WEXIT, 107 PS_STOPFORK, P_STOPFORK, 108 PS_STOPEXEC, P_STOPEXEC, 109 PS_STOPEXIT, P_STOPEXIT, 110 0 111 }; 112 113 static const u_int sysctl_slflagmap[] = { 114 PSL_TRACED, P_TRACED, 115 PSL_FSTRACE, P_FSTRACE, 116 PSL_CHTRACED, P_CHTRACED, 117 PSL_SYSCALL, P_SYSCALL, 118 0 119 }; 120 121 static const u_int sysctl_lflagmap[] = { 122 PL_CONTROLT, P_CONTROLT, 123 PL_PPWAIT, P_PPWAIT, 124 0 125 }; 126 127 static const u_int sysctl_stflagmap[] = { 128 PST_PROFIL, P_PROFIL, 129 0 130 131 }; 132 133 static const u_int sysctl_lwpflagmap[] = { 134 LW_INMEM, P_INMEM, 135 LW_SINTR, P_SINTR, 136 LW_SYSTEM, P_SYSTEM, 137 LW_SA, P_SA, /* WRS ??? */ 138 0 139 }; 140 141 static const u_int sysctl_lwpprflagmap[] = { 142 LPR_DETACHED, L_DETACHED, 143 0 144 }; 145 146 /* 147 * try over estimating by 5 procs/lwps 148 */ 149 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 150 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 151 152 static int dcopyout(struct lwp *, const void *, void *, size_t); 153 154 static int 155 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 156 { 157 int error; 158 159 error = copyout(kaddr, uaddr, len); 160 ktrmibio(-1, UIO_READ, uaddr, len, error); 161 162 return error; 163 } 164 165 #ifdef DIAGNOSTIC 166 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 167 #endif 168 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 169 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 170 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 171 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 172 static int sysctl_setlen(SYSCTLFN_PROTO); 173 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 174 static int sysctl_kern_file(SYSCTLFN_PROTO); 175 static int sysctl_msgbuf(SYSCTLFN_PROTO); 176 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 177 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 178 #if NPTY > 0 179 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 180 #endif /* NPTY > 0 */ 181 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 182 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 183 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 184 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 185 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 186 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 187 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 188 static int sysctl_kern_file2(SYSCTLFN_PROTO); 189 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 190 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 191 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 192 static int sysctl_doeproc(SYSCTLFN_PROTO); 193 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 194 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 195 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 196 197 static u_int sysctl_map_flags(const u_int *, u_int); 198 static void fill_kproc2(struct proc *, struct kinfo_proc2 *, bool); 199 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 200 static void fill_file(struct kinfo_file *, const file_t *, const fdfile_t *, 201 int, pid_t); 202 203 /* 204 * ******************************************************************** 205 * section 1: setup routines 206 * ******************************************************************** 207 * These functions are stuffed into a link set for sysctl setup 208 * functions. They're never called or referenced from anywhere else. 209 * ******************************************************************** 210 */ 211 212 /* 213 * sets up the base nodes... 214 */ 215 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 216 { 217 218 sysctl_createv(clog, 0, NULL, NULL, 219 CTLFLAG_PERMANENT, 220 CTLTYPE_NODE, "kern", 221 SYSCTL_DESCR("High kernel"), 222 NULL, 0, NULL, 0, 223 CTL_KERN, CTL_EOL); 224 sysctl_createv(clog, 0, NULL, NULL, 225 CTLFLAG_PERMANENT, 226 CTLTYPE_NODE, "vm", 227 SYSCTL_DESCR("Virtual memory"), 228 NULL, 0, NULL, 0, 229 CTL_VM, CTL_EOL); 230 sysctl_createv(clog, 0, NULL, NULL, 231 CTLFLAG_PERMANENT, 232 CTLTYPE_NODE, "vfs", 233 SYSCTL_DESCR("Filesystem"), 234 NULL, 0, NULL, 0, 235 CTL_VFS, CTL_EOL); 236 sysctl_createv(clog, 0, NULL, NULL, 237 CTLFLAG_PERMANENT, 238 CTLTYPE_NODE, "net", 239 SYSCTL_DESCR("Networking"), 240 NULL, 0, NULL, 0, 241 CTL_NET, CTL_EOL); 242 sysctl_createv(clog, 0, NULL, NULL, 243 CTLFLAG_PERMANENT, 244 CTLTYPE_NODE, "debug", 245 SYSCTL_DESCR("Debugging"), 246 NULL, 0, NULL, 0, 247 CTL_DEBUG, CTL_EOL); 248 sysctl_createv(clog, 0, NULL, NULL, 249 CTLFLAG_PERMANENT, 250 CTLTYPE_NODE, "hw", 251 SYSCTL_DESCR("Generic CPU, I/O"), 252 NULL, 0, NULL, 0, 253 CTL_HW, CTL_EOL); 254 sysctl_createv(clog, 0, NULL, NULL, 255 CTLFLAG_PERMANENT, 256 CTLTYPE_NODE, "machdep", 257 SYSCTL_DESCR("Machine dependent"), 258 NULL, 0, NULL, 0, 259 CTL_MACHDEP, CTL_EOL); 260 /* 261 * this node is inserted so that the sysctl nodes in libc can 262 * operate. 263 */ 264 sysctl_createv(clog, 0, NULL, NULL, 265 CTLFLAG_PERMANENT, 266 CTLTYPE_NODE, "user", 267 SYSCTL_DESCR("User-level"), 268 NULL, 0, NULL, 0, 269 CTL_USER, CTL_EOL); 270 sysctl_createv(clog, 0, NULL, NULL, 271 CTLFLAG_PERMANENT, 272 CTLTYPE_NODE, "ddb", 273 SYSCTL_DESCR("In-kernel debugger"), 274 NULL, 0, NULL, 0, 275 CTL_DDB, CTL_EOL); 276 sysctl_createv(clog, 0, NULL, NULL, 277 CTLFLAG_PERMANENT, 278 CTLTYPE_NODE, "proc", 279 SYSCTL_DESCR("Per-process"), 280 NULL, 0, NULL, 0, 281 CTL_PROC, CTL_EOL); 282 sysctl_createv(clog, 0, NULL, NULL, 283 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 284 CTLTYPE_NODE, "vendor", 285 SYSCTL_DESCR("Vendor specific"), 286 NULL, 0, NULL, 0, 287 CTL_VENDOR, CTL_EOL); 288 sysctl_createv(clog, 0, NULL, NULL, 289 CTLFLAG_PERMANENT, 290 CTLTYPE_NODE, "emul", 291 SYSCTL_DESCR("Emulation settings"), 292 NULL, 0, NULL, 0, 293 CTL_EMUL, CTL_EOL); 294 sysctl_createv(clog, 0, NULL, NULL, 295 CTLFLAG_PERMANENT, 296 CTLTYPE_NODE, "security", 297 SYSCTL_DESCR("Security"), 298 NULL, 0, NULL, 0, 299 CTL_SECURITY, CTL_EOL); 300 } 301 302 /* 303 * this setup routine is a replacement for kern_sysctl() 304 */ 305 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 306 { 307 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 308 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 309 extern int dumponpanic; /* defined in kern/subr_prf.c */ 310 const struct sysctlnode *rnode; 311 312 sysctl_createv(clog, 0, NULL, NULL, 313 CTLFLAG_PERMANENT, 314 CTLTYPE_NODE, "kern", NULL, 315 NULL, 0, NULL, 0, 316 CTL_KERN, CTL_EOL); 317 318 sysctl_createv(clog, 0, NULL, NULL, 319 CTLFLAG_PERMANENT, 320 CTLTYPE_STRING, "ostype", 321 SYSCTL_DESCR("Operating system type"), 322 NULL, 0, &ostype, 0, 323 CTL_KERN, KERN_OSTYPE, CTL_EOL); 324 sysctl_createv(clog, 0, NULL, NULL, 325 CTLFLAG_PERMANENT, 326 CTLTYPE_STRING, "osrelease", 327 SYSCTL_DESCR("Operating system release"), 328 NULL, 0, &osrelease, 0, 329 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 330 sysctl_createv(clog, 0, NULL, NULL, 331 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 332 CTLTYPE_INT, "osrevision", 333 SYSCTL_DESCR("Operating system revision"), 334 NULL, __NetBSD_Version__, NULL, 0, 335 CTL_KERN, KERN_OSREV, CTL_EOL); 336 sysctl_createv(clog, 0, NULL, NULL, 337 CTLFLAG_PERMANENT, 338 CTLTYPE_STRING, "version", 339 SYSCTL_DESCR("Kernel version"), 340 NULL, 0, &version, 0, 341 CTL_KERN, KERN_VERSION, CTL_EOL); 342 sysctl_createv(clog, 0, NULL, NULL, 343 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 344 CTLTYPE_INT, "maxvnodes", 345 SYSCTL_DESCR("Maximum number of vnodes"), 346 sysctl_kern_maxvnodes, 0, NULL, 0, 347 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 348 sysctl_createv(clog, 0, NULL, NULL, 349 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 350 CTLTYPE_INT, "maxproc", 351 SYSCTL_DESCR("Maximum number of simultaneous processes"), 352 sysctl_kern_maxproc, 0, NULL, 0, 353 CTL_KERN, KERN_MAXPROC, CTL_EOL); 354 sysctl_createv(clog, 0, NULL, NULL, 355 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 356 CTLTYPE_INT, "maxfiles", 357 SYSCTL_DESCR("Maximum number of open files"), 358 NULL, 0, &maxfiles, 0, 359 CTL_KERN, KERN_MAXFILES, CTL_EOL); 360 sysctl_createv(clog, 0, NULL, NULL, 361 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 362 CTLTYPE_INT, "argmax", 363 SYSCTL_DESCR("Maximum number of bytes of arguments to " 364 "execve(2)"), 365 NULL, ARG_MAX, NULL, 0, 366 CTL_KERN, KERN_ARGMAX, CTL_EOL); 367 sysctl_createv(clog, 0, NULL, NULL, 368 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 369 CTLTYPE_STRING, "hostname", 370 SYSCTL_DESCR("System hostname"), 371 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 372 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 373 sysctl_createv(clog, 0, NULL, NULL, 374 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 375 CTLTYPE_INT, "hostid", 376 SYSCTL_DESCR("System host ID number"), 377 sysctl_kern_hostid, 0, NULL, 0, 378 CTL_KERN, KERN_HOSTID, CTL_EOL); 379 sysctl_createv(clog, 0, NULL, NULL, 380 CTLFLAG_PERMANENT, 381 CTLTYPE_STRUCT, "clockrate", 382 SYSCTL_DESCR("Kernel clock rates"), 383 sysctl_kern_clockrate, 0, NULL, 384 sizeof(struct clockinfo), 385 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 386 sysctl_createv(clog, 0, NULL, NULL, 387 CTLFLAG_PERMANENT, 388 CTLTYPE_INT, "hardclock_ticks", 389 SYSCTL_DESCR("Number of hardclock ticks"), 390 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 391 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 392 sysctl_createv(clog, 0, NULL, NULL, 393 CTLFLAG_PERMANENT, 394 CTLTYPE_STRUCT, "vnode", 395 SYSCTL_DESCR("System vnode table"), 396 sysctl_kern_vnode, 0, NULL, 0, 397 CTL_KERN, KERN_VNODE, CTL_EOL); 398 sysctl_createv(clog, 0, NULL, NULL, 399 CTLFLAG_PERMANENT, 400 CTLTYPE_STRUCT, "file", 401 SYSCTL_DESCR("System open file table"), 402 sysctl_kern_file, 0, NULL, 0, 403 CTL_KERN, KERN_FILE, CTL_EOL); 404 #ifndef GPROF 405 sysctl_createv(clog, 0, NULL, NULL, 406 CTLFLAG_PERMANENT, 407 CTLTYPE_NODE, "profiling", 408 SYSCTL_DESCR("Profiling information (not available)"), 409 sysctl_notavail, 0, NULL, 0, 410 CTL_KERN, KERN_PROF, CTL_EOL); 411 #endif 412 sysctl_createv(clog, 0, NULL, NULL, 413 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 414 CTLTYPE_INT, "posix1version", 415 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 416 "with which the operating system attempts " 417 "to comply"), 418 NULL, _POSIX_VERSION, NULL, 0, 419 CTL_KERN, KERN_POSIX1, CTL_EOL); 420 sysctl_createv(clog, 0, NULL, NULL, 421 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 422 CTLTYPE_INT, "ngroups", 423 SYSCTL_DESCR("Maximum number of supplemental groups"), 424 NULL, NGROUPS_MAX, NULL, 0, 425 CTL_KERN, KERN_NGROUPS, CTL_EOL); 426 sysctl_createv(clog, 0, NULL, NULL, 427 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 428 CTLTYPE_INT, "job_control", 429 SYSCTL_DESCR("Whether job control is available"), 430 NULL, 1, NULL, 0, 431 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 432 sysctl_createv(clog, 0, NULL, NULL, 433 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 434 CTLTYPE_INT, "saved_ids", 435 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 436 "available"), NULL, 437 #ifdef _POSIX_SAVED_IDS 438 1, 439 #else /* _POSIX_SAVED_IDS */ 440 0, 441 #endif /* _POSIX_SAVED_IDS */ 442 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 443 sysctl_createv(clog, 0, NULL, NULL, 444 CTLFLAG_PERMANENT, 445 CTLTYPE_STRUCT, "boottime", 446 SYSCTL_DESCR("System boot time"), 447 NULL, 0, &boottime, sizeof(boottime), 448 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 449 #ifdef COMPAT_50 450 { 451 extern struct timeval50 boottime50; 452 sysctl_createv(clog, 0, NULL, NULL, 453 CTLFLAG_PERMANENT, 454 CTLTYPE_STRUCT, "oboottime", 455 SYSCTL_DESCR("System boot time"), 456 NULL, 0, &boottime50, sizeof(boottime50), 457 CTL_KERN, KERN_OBOOTTIME, CTL_EOL); 458 } 459 #endif 460 sysctl_createv(clog, 0, NULL, NULL, 461 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 462 CTLTYPE_STRING, "domainname", 463 SYSCTL_DESCR("YP domain name"), 464 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 465 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 466 sysctl_createv(clog, 0, NULL, NULL, 467 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 468 CTLTYPE_INT, "maxpartitions", 469 SYSCTL_DESCR("Maximum number of partitions allowed per " 470 "disk"), 471 NULL, MAXPARTITIONS, NULL, 0, 472 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 473 sysctl_createv(clog, 0, NULL, NULL, 474 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 475 CTLTYPE_INT, "rawpartition", 476 SYSCTL_DESCR("Raw partition of a disk"), 477 NULL, RAW_PART, NULL, 0, 478 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 479 sysctl_createv(clog, 0, NULL, NULL, 480 CTLFLAG_PERMANENT, 481 CTLTYPE_STRUCT, "timex", NULL, 482 sysctl_notavail, 0, NULL, 0, 483 CTL_KERN, KERN_TIMEX, CTL_EOL); 484 sysctl_createv(clog, 0, NULL, NULL, 485 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 486 CTLTYPE_INT, "rtc_offset", 487 SYSCTL_DESCR("Offset of real time clock from UTC in " 488 "minutes"), 489 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 490 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 491 sysctl_createv(clog, 0, NULL, NULL, 492 CTLFLAG_PERMANENT, 493 CTLTYPE_STRING, "root_device", 494 SYSCTL_DESCR("Name of the root device"), 495 sysctl_root_device, 0, NULL, 0, 496 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 497 sysctl_createv(clog, 0, NULL, NULL, 498 CTLFLAG_PERMANENT, 499 CTLTYPE_INT, "msgbufsize", 500 SYSCTL_DESCR("Size of the kernel message buffer"), 501 sysctl_msgbuf, 0, NULL, 0, 502 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 503 sysctl_createv(clog, 0, NULL, NULL, 504 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 505 CTLTYPE_INT, "fsync", 506 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 507 "Synchronization Option is available on " 508 "this system"), 509 NULL, 1, NULL, 0, 510 CTL_KERN, KERN_FSYNC, CTL_EOL); 511 sysctl_createv(clog, 0, NULL, NULL, 512 CTLFLAG_PERMANENT, 513 CTLTYPE_NODE, "ipc", 514 SYSCTL_DESCR("SysV IPC options"), 515 NULL, 0, NULL, 0, 516 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 517 sysctl_createv(clog, 0, NULL, NULL, 518 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 519 CTLTYPE_INT, "sysvmsg", 520 SYSCTL_DESCR("System V style message support available"), 521 NULL, 522 #ifdef SYSVMSG 523 1, 524 #else /* SYSVMSG */ 525 0, 526 #endif /* SYSVMSG */ 527 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 528 sysctl_createv(clog, 0, NULL, NULL, 529 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 530 CTLTYPE_INT, "sysvsem", 531 SYSCTL_DESCR("System V style semaphore support " 532 "available"), NULL, 533 #ifdef SYSVSEM 534 1, 535 #else /* SYSVSEM */ 536 0, 537 #endif /* SYSVSEM */ 538 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 539 sysctl_createv(clog, 0, NULL, NULL, 540 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 541 CTLTYPE_INT, "sysvshm", 542 SYSCTL_DESCR("System V style shared memory support " 543 "available"), NULL, 544 #ifdef SYSVSHM 545 1, 546 #else /* SYSVSHM */ 547 0, 548 #endif /* SYSVSHM */ 549 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 550 sysctl_createv(clog, 0, NULL, NULL, 551 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 552 CTLTYPE_INT, "synchronized_io", 553 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 554 "I/O Option is available on this system"), 555 NULL, 1, NULL, 0, 556 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 557 sysctl_createv(clog, 0, NULL, NULL, 558 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 559 CTLTYPE_INT, "iov_max", 560 SYSCTL_DESCR("Maximum number of iovec structures per " 561 "process"), 562 NULL, IOV_MAX, NULL, 0, 563 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 564 sysctl_createv(clog, 0, NULL, NULL, 565 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 566 CTLTYPE_INT, "mapped_files", 567 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 568 "Files Option is available on this system"), 569 NULL, 1, NULL, 0, 570 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 571 sysctl_createv(clog, 0, NULL, NULL, 572 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 573 CTLTYPE_INT, "memlock", 574 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 575 "Locking Option is available on this " 576 "system"), 577 NULL, 1, NULL, 0, 578 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 579 sysctl_createv(clog, 0, NULL, NULL, 580 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 581 CTLTYPE_INT, "memlock_range", 582 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 583 "Locking Option is available on this " 584 "system"), 585 NULL, 1, NULL, 0, 586 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 587 sysctl_createv(clog, 0, NULL, NULL, 588 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 589 CTLTYPE_INT, "memory_protection", 590 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 591 "Protection Option is available on this " 592 "system"), 593 NULL, 1, NULL, 0, 594 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 595 sysctl_createv(clog, 0, NULL, NULL, 596 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 597 CTLTYPE_INT, "login_name_max", 598 SYSCTL_DESCR("Maximum login name length"), 599 NULL, LOGIN_NAME_MAX, NULL, 0, 600 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 601 sysctl_createv(clog, 0, NULL, NULL, 602 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 603 CTLTYPE_STRING, "defcorename", 604 SYSCTL_DESCR("Default core file name"), 605 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 606 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 607 sysctl_createv(clog, 0, NULL, NULL, 608 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 609 CTLTYPE_INT, "logsigexit", 610 SYSCTL_DESCR("Log process exit when caused by signals"), 611 NULL, 0, &kern_logsigexit, 0, 612 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 613 sysctl_createv(clog, 0, NULL, NULL, 614 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 615 CTLTYPE_INT, "fscale", 616 SYSCTL_DESCR("Kernel fixed-point scale factor"), 617 NULL, FSCALE, NULL, 0, 618 CTL_KERN, KERN_FSCALE, CTL_EOL); 619 sysctl_createv(clog, 0, NULL, NULL, 620 CTLFLAG_PERMANENT, 621 CTLTYPE_INT, "ccpu", 622 SYSCTL_DESCR("Scheduler exponential decay value"), 623 NULL, 0, &ccpu, 0, 624 CTL_KERN, KERN_CCPU, CTL_EOL); 625 sysctl_createv(clog, 0, NULL, NULL, 626 CTLFLAG_PERMANENT, 627 CTLTYPE_STRUCT, "cp_time", 628 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 629 sysctl_kern_cptime, 0, NULL, 0, 630 CTL_KERN, KERN_CP_TIME, CTL_EOL); 631 sysctl_createv(clog, 0, NULL, NULL, 632 CTLFLAG_PERMANENT, 633 CTLTYPE_INT, "msgbuf", 634 SYSCTL_DESCR("Kernel message buffer"), 635 sysctl_msgbuf, 0, NULL, 0, 636 CTL_KERN, KERN_MSGBUF, CTL_EOL); 637 sysctl_createv(clog, 0, NULL, NULL, 638 CTLFLAG_PERMANENT, 639 CTLTYPE_STRUCT, "consdev", 640 SYSCTL_DESCR("Console device"), 641 sysctl_consdev, 0, NULL, sizeof(dev_t), 642 CTL_KERN, KERN_CONSDEV, CTL_EOL); 643 #if NPTY > 0 644 sysctl_createv(clog, 0, NULL, NULL, 645 CTLFLAG_PERMANENT, 646 CTLTYPE_INT, "maxptys", 647 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 648 sysctl_kern_maxptys, 0, NULL, 0, 649 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 650 #endif /* NPTY > 0 */ 651 sysctl_createv(clog, 0, NULL, NULL, 652 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 653 CTLTYPE_INT, "maxphys", 654 SYSCTL_DESCR("Maximum raw I/O transfer size"), 655 NULL, MAXPHYS, NULL, 0, 656 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 657 sysctl_createv(clog, 0, NULL, NULL, 658 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 659 CTLTYPE_INT, "sbmax", 660 SYSCTL_DESCR("Maximum socket buffer size"), 661 sysctl_kern_sbmax, 0, NULL, 0, 662 CTL_KERN, KERN_SBMAX, CTL_EOL); 663 sysctl_createv(clog, 0, NULL, NULL, 664 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 665 CTLTYPE_INT, "monotonic_clock", 666 SYSCTL_DESCR("Implementation version of the POSIX " 667 "1003.1b Monotonic Clock Option"), 668 /* XXX _POSIX_VERSION */ 669 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 670 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 671 sysctl_createv(clog, 0, NULL, NULL, 672 CTLFLAG_PERMANENT, 673 CTLTYPE_INT, "urandom", 674 SYSCTL_DESCR("Random integer value"), 675 sysctl_kern_urnd, 0, NULL, 0, 676 CTL_KERN, KERN_URND, CTL_EOL); 677 sysctl_createv(clog, 0, NULL, NULL, 678 CTLFLAG_PERMANENT, 679 CTLTYPE_INT, "arandom", 680 SYSCTL_DESCR("n bytes of random data"), 681 sysctl_kern_arnd, 0, NULL, 0, 682 CTL_KERN, KERN_ARND, CTL_EOL); 683 sysctl_createv(clog, 0, NULL, NULL, 684 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 685 CTLTYPE_INT, "labelsector", 686 SYSCTL_DESCR("Sector number containing the disklabel"), 687 NULL, LABELSECTOR, NULL, 0, 688 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 689 sysctl_createv(clog, 0, NULL, NULL, 690 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 691 CTLTYPE_INT, "labeloffset", 692 SYSCTL_DESCR("Offset of the disklabel within the " 693 "sector"), 694 NULL, LABELOFFSET, NULL, 0, 695 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 696 sysctl_createv(clog, 0, NULL, NULL, 697 CTLFLAG_PERMANENT, 698 CTLTYPE_NODE, "lwp", 699 SYSCTL_DESCR("System-wide LWP information"), 700 sysctl_kern_lwp, 0, NULL, 0, 701 CTL_KERN, KERN_LWP, CTL_EOL); 702 sysctl_createv(clog, 0, NULL, NULL, 703 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 704 CTLTYPE_INT, "forkfsleep", 705 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 706 "to process limits"), 707 sysctl_kern_forkfsleep, 0, NULL, 0, 708 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 709 sysctl_createv(clog, 0, NULL, NULL, 710 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 711 CTLTYPE_INT, "posix_threads", 712 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 713 "Threads option to which the system " 714 "attempts to conform"), 715 /* XXX _POSIX_VERSION */ 716 NULL, _POSIX_THREADS, NULL, 0, 717 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 718 sysctl_createv(clog, 0, NULL, NULL, 719 CTLFLAG_PERMANENT, 720 CTLTYPE_INT, "posix_semaphores", 721 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 722 "Semaphores option to which the system " 723 "attempts to conform"), NULL, 724 0, &posix_semaphores, 725 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 726 sysctl_createv(clog, 0, NULL, NULL, 727 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 728 CTLTYPE_INT, "posix_barriers", 729 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 730 "Barriers option to which the system " 731 "attempts to conform"), 732 /* XXX _POSIX_VERSION */ 733 NULL, _POSIX_BARRIERS, NULL, 0, 734 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 735 sysctl_createv(clog, 0, NULL, NULL, 736 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 737 CTLTYPE_INT, "posix_timers", 738 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 739 "Timers option to which the system " 740 "attempts to conform"), 741 /* XXX _POSIX_VERSION */ 742 NULL, _POSIX_TIMERS, NULL, 0, 743 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 744 sysctl_createv(clog, 0, NULL, NULL, 745 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 746 CTLTYPE_INT, "posix_spin_locks", 747 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 748 "Locks option to which the system attempts " 749 "to conform"), 750 /* XXX _POSIX_VERSION */ 751 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 752 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 753 sysctl_createv(clog, 0, NULL, NULL, 754 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 755 CTLTYPE_INT, "posix_reader_writer_locks", 756 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 757 "Read-Write Locks option to which the " 758 "system attempts to conform"), 759 /* XXX _POSIX_VERSION */ 760 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 761 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 762 sysctl_createv(clog, 0, NULL, NULL, 763 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 764 CTLTYPE_INT, "dump_on_panic", 765 SYSCTL_DESCR("Perform a crash dump on system panic"), 766 NULL, 0, &dumponpanic, 0, 767 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 768 #ifdef DIAGNOSTIC 769 sysctl_createv(clog, 0, NULL, NULL, 770 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 771 CTLTYPE_INT, "panic_now", 772 SYSCTL_DESCR("Trigger a panic"), 773 sysctl_kern_trigger_panic, 0, NULL, 0, 774 CTL_KERN, CTL_CREATE, CTL_EOL); 775 #endif 776 sysctl_createv(clog, 0, NULL, NULL, 777 CTLFLAG_PERMANENT, 778 CTLTYPE_INT, "root_partition", 779 SYSCTL_DESCR("Root partition on the root device"), 780 sysctl_kern_root_partition, 0, NULL, 0, 781 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 782 sysctl_createv(clog, 0, NULL, NULL, 783 CTLFLAG_PERMANENT, 784 CTLTYPE_STRUCT, "drivers", 785 SYSCTL_DESCR("List of all drivers with block and " 786 "character device numbers"), 787 sysctl_kern_drivers, 0, NULL, 0, 788 CTL_KERN, KERN_DRIVERS, CTL_EOL); 789 sysctl_createv(clog, 0, NULL, NULL, 790 CTLFLAG_PERMANENT, 791 CTLTYPE_STRUCT, "file2", 792 SYSCTL_DESCR("System open file table"), 793 sysctl_kern_file2, 0, NULL, 0, 794 CTL_KERN, KERN_FILE2, CTL_EOL); 795 sysctl_createv(clog, 0, NULL, NULL, 796 CTLFLAG_PERMANENT, 797 CTLTYPE_STRUCT, "cp_id", 798 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 799 sysctl_kern_cpid, 0, NULL, 0, 800 CTL_KERN, KERN_CP_ID, CTL_EOL); 801 sysctl_createv(clog, 0, NULL, &rnode, 802 CTLFLAG_PERMANENT, 803 CTLTYPE_NODE, "coredump", 804 SYSCTL_DESCR("Coredump settings."), 805 NULL, 0, NULL, 0, 806 CTL_KERN, CTL_CREATE, CTL_EOL); 807 sysctl_createv(clog, 0, &rnode, &rnode, 808 CTLFLAG_PERMANENT, 809 CTLTYPE_NODE, "setid", 810 SYSCTL_DESCR("Set-id processes' coredump settings."), 811 NULL, 0, NULL, 0, 812 CTL_CREATE, CTL_EOL); 813 sysctl_createv(clog, 0, &rnode, NULL, 814 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 815 CTLTYPE_INT, "dump", 816 SYSCTL_DESCR("Allow set-id processes to dump core."), 817 sysctl_security_setidcore, 0, &security_setidcore_dump, 818 sizeof(security_setidcore_dump), 819 CTL_CREATE, CTL_EOL); 820 sysctl_createv(clog, 0, &rnode, NULL, 821 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 822 CTLTYPE_STRING, "path", 823 SYSCTL_DESCR("Path pattern for set-id coredumps."), 824 sysctl_security_setidcorename, 0, 825 &security_setidcore_path, 826 sizeof(security_setidcore_path), 827 CTL_CREATE, CTL_EOL); 828 sysctl_createv(clog, 0, &rnode, NULL, 829 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 830 CTLTYPE_INT, "owner", 831 SYSCTL_DESCR("Owner id for set-id processes' cores."), 832 sysctl_security_setidcore, 0, &security_setidcore_owner, 833 0, 834 CTL_CREATE, CTL_EOL); 835 sysctl_createv(clog, 0, &rnode, NULL, 836 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 837 CTLTYPE_INT, "group", 838 SYSCTL_DESCR("Group id for set-id processes' cores."), 839 sysctl_security_setidcore, 0, &security_setidcore_group, 840 0, 841 CTL_CREATE, CTL_EOL); 842 sysctl_createv(clog, 0, &rnode, NULL, 843 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 844 CTLTYPE_INT, "mode", 845 SYSCTL_DESCR("Mode for set-id processes' cores."), 846 sysctl_security_setidcore, 0, &security_setidcore_mode, 847 0, 848 CTL_CREATE, CTL_EOL); 849 #ifdef KERN_SA 850 sysctl_createv(clog, 0, NULL, NULL, 851 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 852 CTLTYPE_INT, "no_sa_support", 853 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 854 NULL, 0, &sa_system_disabled, 0, 855 CTL_KERN, CTL_CREATE, CTL_EOL); 856 #else 857 sysctl_createv(clog, 0, NULL, NULL, 858 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 859 CTLTYPE_INT, "no_sa_support", 860 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 861 NULL, 1, NULL, 0, 862 CTL_KERN, CTL_CREATE, CTL_EOL); 863 #endif 864 } 865 866 SYSCTL_SETUP(sysctl_kern_proc_setup, 867 "sysctl kern.proc/proc2/proc_args subtree setup") 868 { 869 870 sysctl_createv(clog, 0, NULL, NULL, 871 CTLFLAG_PERMANENT, 872 CTLTYPE_NODE, "kern", NULL, 873 NULL, 0, NULL, 0, 874 CTL_KERN, CTL_EOL); 875 876 sysctl_createv(clog, 0, NULL, NULL, 877 CTLFLAG_PERMANENT, 878 CTLTYPE_NODE, "proc", 879 SYSCTL_DESCR("System-wide process information"), 880 sysctl_doeproc, 0, NULL, 0, 881 CTL_KERN, KERN_PROC, CTL_EOL); 882 sysctl_createv(clog, 0, NULL, NULL, 883 CTLFLAG_PERMANENT, 884 CTLTYPE_NODE, "proc2", 885 SYSCTL_DESCR("Machine-independent process information"), 886 sysctl_doeproc, 0, NULL, 0, 887 CTL_KERN, KERN_PROC2, CTL_EOL); 888 sysctl_createv(clog, 0, NULL, NULL, 889 CTLFLAG_PERMANENT, 890 CTLTYPE_NODE, "proc_args", 891 SYSCTL_DESCR("Process argument information"), 892 sysctl_kern_proc_args, 0, NULL, 0, 893 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 894 895 /* 896 "nodes" under these: 897 898 KERN_PROC_ALL 899 KERN_PROC_PID pid 900 KERN_PROC_PGRP pgrp 901 KERN_PROC_SESSION sess 902 KERN_PROC_TTY tty 903 KERN_PROC_UID uid 904 KERN_PROC_RUID uid 905 KERN_PROC_GID gid 906 KERN_PROC_RGID gid 907 908 all in all, probably not worth the effort... 909 */ 910 } 911 912 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 913 { 914 u_int u; 915 u_quad_t q; 916 917 sysctl_createv(clog, 0, NULL, NULL, 918 CTLFLAG_PERMANENT, 919 CTLTYPE_NODE, "hw", NULL, 920 NULL, 0, NULL, 0, 921 CTL_HW, CTL_EOL); 922 923 sysctl_createv(clog, 0, NULL, NULL, 924 CTLFLAG_PERMANENT, 925 CTLTYPE_STRING, "machine", 926 SYSCTL_DESCR("Machine class"), 927 NULL, 0, machine, 0, 928 CTL_HW, HW_MACHINE, CTL_EOL); 929 sysctl_createv(clog, 0, NULL, NULL, 930 CTLFLAG_PERMANENT, 931 CTLTYPE_STRING, "model", 932 SYSCTL_DESCR("Machine model"), 933 NULL, 0, cpu_model, 0, 934 CTL_HW, HW_MODEL, CTL_EOL); 935 sysctl_createv(clog, 0, NULL, NULL, 936 CTLFLAG_PERMANENT, 937 CTLTYPE_INT, "ncpu", 938 SYSCTL_DESCR("Number of CPUs configured"), 939 NULL, 0, &ncpu, 0, 940 CTL_HW, HW_NCPU, CTL_EOL); 941 sysctl_createv(clog, 0, NULL, NULL, 942 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 943 CTLTYPE_INT, "byteorder", 944 SYSCTL_DESCR("System byte order"), 945 NULL, BYTE_ORDER, NULL, 0, 946 CTL_HW, HW_BYTEORDER, CTL_EOL); 947 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 948 UINT_MAX : physmem * PAGE_SIZE; 949 sysctl_createv(clog, 0, NULL, NULL, 950 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 951 CTLTYPE_INT, "physmem", 952 SYSCTL_DESCR("Bytes of physical memory"), 953 NULL, u, NULL, 0, 954 CTL_HW, HW_PHYSMEM, CTL_EOL); 955 sysctl_createv(clog, 0, NULL, NULL, 956 CTLFLAG_PERMANENT, 957 CTLTYPE_INT, "usermem", 958 SYSCTL_DESCR("Bytes of non-kernel memory"), 959 sysctl_hw_usermem, 0, NULL, 0, 960 CTL_HW, HW_USERMEM, CTL_EOL); 961 sysctl_createv(clog, 0, NULL, NULL, 962 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 963 CTLTYPE_INT, "pagesize", 964 SYSCTL_DESCR("Software page size"), 965 NULL, PAGE_SIZE, NULL, 0, 966 CTL_HW, HW_PAGESIZE, CTL_EOL); 967 sysctl_createv(clog, 0, NULL, NULL, 968 CTLFLAG_PERMANENT, 969 CTLTYPE_STRING, "machine_arch", 970 SYSCTL_DESCR("Machine CPU class"), 971 NULL, 0, machine_arch, 0, 972 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 973 sysctl_createv(clog, 0, NULL, NULL, 974 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 975 CTLTYPE_INT, "alignbytes", 976 SYSCTL_DESCR("Alignment constraint for all possible " 977 "data types"), 978 NULL, ALIGNBYTES, NULL, 0, 979 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 980 sysctl_createv(clog, 0, NULL, NULL, 981 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 982 CTLTYPE_STRING, "cnmagic", 983 SYSCTL_DESCR("Console magic key sequence"), 984 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 985 CTL_HW, HW_CNMAGIC, CTL_EOL); 986 q = (u_quad_t)physmem * PAGE_SIZE; 987 sysctl_createv(clog, 0, NULL, NULL, 988 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 989 CTLTYPE_QUAD, "physmem64", 990 SYSCTL_DESCR("Bytes of physical memory"), 991 NULL, q, NULL, 0, 992 CTL_HW, HW_PHYSMEM64, CTL_EOL); 993 sysctl_createv(clog, 0, NULL, NULL, 994 CTLFLAG_PERMANENT, 995 CTLTYPE_QUAD, "usermem64", 996 SYSCTL_DESCR("Bytes of non-kernel memory"), 997 sysctl_hw_usermem, 0, NULL, 0, 998 CTL_HW, HW_USERMEM64, CTL_EOL); 999 sysctl_createv(clog, 0, NULL, NULL, 1000 CTLFLAG_PERMANENT, 1001 CTLTYPE_INT, "ncpuonline", 1002 SYSCTL_DESCR("Number of CPUs online"), 1003 NULL, 0, &ncpuonline, 0, 1004 CTL_HW, HW_NCPUONLINE, CTL_EOL); 1005 } 1006 1007 #ifdef DEBUG 1008 /* 1009 * Debugging related system variables. 1010 */ 1011 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 1012 struct ctldebug debug5, debug6, debug7, debug8, debug9; 1013 struct ctldebug debug10, debug11, debug12, debug13, debug14; 1014 struct ctldebug debug15, debug16, debug17, debug18, debug19; 1015 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 1016 &debug0, &debug1, &debug2, &debug3, &debug4, 1017 &debug5, &debug6, &debug7, &debug8, &debug9, 1018 &debug10, &debug11, &debug12, &debug13, &debug14, 1019 &debug15, &debug16, &debug17, &debug18, &debug19, 1020 }; 1021 1022 /* 1023 * this setup routine is a replacement for debug_sysctl() 1024 * 1025 * note that it creates several nodes per defined debug variable 1026 */ 1027 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 1028 { 1029 struct ctldebug *cdp; 1030 char nodename[20]; 1031 int i; 1032 1033 /* 1034 * two ways here: 1035 * 1036 * the "old" way (debug.name -> value) which was emulated by 1037 * the sysctl(8) binary 1038 * 1039 * the new way, which the sysctl(8) binary was actually using 1040 1041 node debug 1042 node debug.0 1043 string debug.0.name 1044 int debug.0.value 1045 int debug.name 1046 1047 */ 1048 1049 sysctl_createv(clog, 0, NULL, NULL, 1050 CTLFLAG_PERMANENT, 1051 CTLTYPE_NODE, "debug", NULL, 1052 NULL, 0, NULL, 0, 1053 CTL_DEBUG, CTL_EOL); 1054 1055 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 1056 cdp = debugvars[i]; 1057 if (cdp->debugname == NULL || cdp->debugvar == NULL) 1058 continue; 1059 1060 snprintf(nodename, sizeof(nodename), "debug%d", i); 1061 sysctl_createv(clog, 0, NULL, NULL, 1062 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1063 CTLTYPE_NODE, nodename, NULL, 1064 NULL, 0, NULL, 0, 1065 CTL_DEBUG, i, CTL_EOL); 1066 sysctl_createv(clog, 0, NULL, NULL, 1067 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1068 CTLTYPE_STRING, "name", NULL, 1069 /*XXXUNCONST*/ 1070 NULL, 0, __UNCONST(cdp->debugname), 0, 1071 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 1072 sysctl_createv(clog, 0, NULL, NULL, 1073 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1074 CTLTYPE_INT, "value", NULL, 1075 NULL, 0, cdp->debugvar, 0, 1076 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 1077 sysctl_createv(clog, 0, NULL, NULL, 1078 CTLFLAG_PERMANENT, 1079 CTLTYPE_INT, cdp->debugname, NULL, 1080 NULL, 0, cdp->debugvar, 0, 1081 CTL_DEBUG, CTL_CREATE, CTL_EOL); 1082 } 1083 } 1084 #endif /* DEBUG */ 1085 1086 /* 1087 * ******************************************************************** 1088 * section 2: private node-specific helper routines. 1089 * ******************************************************************** 1090 */ 1091 1092 #ifdef DIAGNOSTIC 1093 static int 1094 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 1095 { 1096 int newtrig, error; 1097 struct sysctlnode node; 1098 1099 newtrig = 0; 1100 node = *rnode; 1101 node.sysctl_data = &newtrig; 1102 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1103 if (error || newp == NULL) 1104 return (error); 1105 1106 if (newtrig != 0) 1107 panic("Panic triggered"); 1108 1109 return (error); 1110 } 1111 #endif 1112 1113 /* 1114 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 1115 * new value is lower than desiredvnodes and then calls reinit 1116 * routines that needs to adjust to the new value. 1117 */ 1118 static int 1119 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 1120 { 1121 int error, new_vnodes, old_vnodes, new_max; 1122 struct sysctlnode node; 1123 1124 new_vnodes = desiredvnodes; 1125 node = *rnode; 1126 node.sysctl_data = &new_vnodes; 1127 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1128 if (error || newp == NULL) 1129 return (error); 1130 1131 /* Limits: 75% of KVA and physical memory. */ 1132 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 1133 if (new_vnodes > new_max) 1134 new_vnodes = new_max; 1135 1136 old_vnodes = desiredvnodes; 1137 desiredvnodes = new_vnodes; 1138 if (new_vnodes < old_vnodes) { 1139 error = vfs_drainvnodes(new_vnodes, l); 1140 if (error) { 1141 desiredvnodes = old_vnodes; 1142 return (error); 1143 } 1144 } 1145 vfs_reinit(); 1146 nchreinit(); 1147 1148 return (0); 1149 } 1150 1151 /* 1152 * sysctl helper routine for rtc_offset - set time after changes 1153 */ 1154 static int 1155 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1156 { 1157 struct timespec ts, delta; 1158 int error, new_rtc_offset; 1159 struct sysctlnode node; 1160 1161 new_rtc_offset = rtc_offset; 1162 node = *rnode; 1163 node.sysctl_data = &new_rtc_offset; 1164 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1165 if (error || newp == NULL) 1166 return (error); 1167 1168 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1169 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1170 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1171 return (EPERM); 1172 if (rtc_offset == new_rtc_offset) 1173 return (0); 1174 1175 /* if we change the offset, adjust the time */ 1176 nanotime(&ts); 1177 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1178 delta.tv_nsec = 0; 1179 timespecadd(&ts, &delta, &ts); 1180 rtc_offset = new_rtc_offset; 1181 return (settime(l->l_proc, &ts)); 1182 } 1183 1184 /* 1185 * sysctl helper routine for kern.maxproc. Ensures that the new 1186 * values are not too low or too high. 1187 */ 1188 static int 1189 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1190 { 1191 int error, nmaxproc; 1192 struct sysctlnode node; 1193 1194 nmaxproc = maxproc; 1195 node = *rnode; 1196 node.sysctl_data = &nmaxproc; 1197 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1198 if (error || newp == NULL) 1199 return (error); 1200 1201 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1202 return (EINVAL); 1203 #ifdef __HAVE_CPU_MAXPROC 1204 if (nmaxproc > cpu_maxproc()) 1205 return (EINVAL); 1206 #endif 1207 maxproc = nmaxproc; 1208 1209 return (0); 1210 } 1211 1212 /* 1213 * sysctl helper function for kern.hostid. The hostid is a long, but 1214 * we export it as an int, so we need to give it a little help. 1215 */ 1216 static int 1217 sysctl_kern_hostid(SYSCTLFN_ARGS) 1218 { 1219 int error, inthostid; 1220 struct sysctlnode node; 1221 1222 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1223 node = *rnode; 1224 node.sysctl_data = &inthostid; 1225 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1226 if (error || newp == NULL) 1227 return (error); 1228 1229 hostid = (unsigned)inthostid; 1230 1231 return (0); 1232 } 1233 1234 /* 1235 * sysctl helper function for kern.hostname and kern.domainnname. 1236 * resets the relevant recorded length when the underlying name is 1237 * changed. 1238 */ 1239 static int 1240 sysctl_setlen(SYSCTLFN_ARGS) 1241 { 1242 int error; 1243 1244 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1245 if (error || newp == NULL) 1246 return (error); 1247 1248 switch (rnode->sysctl_num) { 1249 case KERN_HOSTNAME: 1250 hostnamelen = strlen((const char*)rnode->sysctl_data); 1251 break; 1252 case KERN_DOMAINNAME: 1253 domainnamelen = strlen((const char*)rnode->sysctl_data); 1254 break; 1255 } 1256 1257 return (0); 1258 } 1259 1260 /* 1261 * sysctl helper routine for kern.clockrate. Assembles a struct on 1262 * the fly to be returned to the caller. 1263 */ 1264 static int 1265 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1266 { 1267 struct clockinfo clkinfo; 1268 struct sysctlnode node; 1269 1270 clkinfo.tick = tick; 1271 clkinfo.tickadj = tickadj; 1272 clkinfo.hz = hz; 1273 clkinfo.profhz = profhz; 1274 clkinfo.stathz = stathz ? stathz : hz; 1275 1276 node = *rnode; 1277 node.sysctl_data = &clkinfo; 1278 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1279 } 1280 1281 1282 /* 1283 * sysctl helper routine for kern.file pseudo-subtree. 1284 */ 1285 static int 1286 sysctl_kern_file(SYSCTLFN_ARGS) 1287 { 1288 int error; 1289 size_t buflen; 1290 struct file *fp, *dp, *np, fbuf; 1291 char *start, *where; 1292 1293 start = where = oldp; 1294 buflen = *oldlenp; 1295 dp = NULL; 1296 1297 if (where == NULL) { 1298 /* 1299 * overestimate by 10 files 1300 */ 1301 *oldlenp = sizeof(filehead) + (nfiles + 10) * 1302 sizeof(struct file); 1303 return (0); 1304 } 1305 1306 /* 1307 * first dcopyout filehead 1308 */ 1309 if (buflen < sizeof(filehead)) { 1310 *oldlenp = 0; 1311 return (0); 1312 } 1313 sysctl_unlock(); 1314 error = dcopyout(l, &filehead, where, sizeof(filehead)); 1315 if (error) { 1316 sysctl_relock(); 1317 return error; 1318 } 1319 buflen -= sizeof(filehead); 1320 where += sizeof(filehead); 1321 1322 /* 1323 * allocate dummy file descriptor to make position in list 1324 */ 1325 if ((dp = fgetdummy()) == NULL) { 1326 sysctl_relock(); 1327 return ENOMEM; 1328 } 1329 1330 /* 1331 * followed by an array of file structures 1332 */ 1333 mutex_enter(&filelist_lock); 1334 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1335 np = LIST_NEXT(fp, f_list); 1336 mutex_enter(&fp->f_lock); 1337 if (fp->f_count == 0) { 1338 mutex_exit(&fp->f_lock); 1339 continue; 1340 } 1341 /* 1342 * XXX Need to prevent that from being an alternative way 1343 * XXX to getting process information. 1344 */ 1345 if (kauth_authorize_generic(l->l_cred, 1346 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 1347 mutex_exit(&fp->f_lock); 1348 continue; 1349 } 1350 if (buflen < sizeof(struct file)) { 1351 *oldlenp = where - start; 1352 mutex_exit(&fp->f_lock); 1353 error = ENOMEM; 1354 break; 1355 } 1356 memcpy(&fbuf, fp, sizeof(fbuf)); 1357 LIST_INSERT_AFTER(fp, dp, f_list); 1358 mutex_exit(&fp->f_lock); 1359 mutex_exit(&filelist_lock); 1360 error = dcopyout(l, &fbuf, where, sizeof(fbuf)); 1361 if (error) { 1362 mutex_enter(&filelist_lock); 1363 LIST_REMOVE(dp, f_list); 1364 break; 1365 } 1366 buflen -= sizeof(struct file); 1367 where += sizeof(struct file); 1368 mutex_enter(&filelist_lock); 1369 np = LIST_NEXT(dp, f_list); 1370 LIST_REMOVE(dp, f_list); 1371 } 1372 mutex_exit(&filelist_lock); 1373 *oldlenp = where - start; 1374 if (dp != NULL) 1375 fputdummy(dp); 1376 sysctl_relock(); 1377 return (error); 1378 } 1379 1380 /* 1381 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1382 * former it merely checks the message buffer is set up. For the latter, 1383 * it also copies out the data if necessary. 1384 */ 1385 static int 1386 sysctl_msgbuf(SYSCTLFN_ARGS) 1387 { 1388 char *where = oldp; 1389 size_t len, maxlen; 1390 long beg, end; 1391 extern kmutex_t log_lock; 1392 int error; 1393 1394 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1395 msgbufenabled = 0; 1396 return (ENXIO); 1397 } 1398 1399 switch (rnode->sysctl_num) { 1400 case KERN_MSGBUFSIZE: { 1401 struct sysctlnode node = *rnode; 1402 int msg_bufs = (int)msgbufp->msg_bufs; 1403 node.sysctl_data = &msg_bufs; 1404 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1405 } 1406 case KERN_MSGBUF: 1407 break; 1408 default: 1409 return (EOPNOTSUPP); 1410 } 1411 1412 if (newp != NULL) 1413 return (EPERM); 1414 1415 if (oldp == NULL) { 1416 /* always return full buffer size */ 1417 *oldlenp = msgbufp->msg_bufs; 1418 return (0); 1419 } 1420 1421 sysctl_unlock(); 1422 1423 /* 1424 * First, copy from the write pointer to the end of 1425 * message buffer. 1426 */ 1427 error = 0; 1428 mutex_spin_enter(&log_lock); 1429 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1430 beg = msgbufp->msg_bufx; 1431 end = msgbufp->msg_bufs; 1432 mutex_spin_exit(&log_lock); 1433 1434 while (maxlen > 0) { 1435 len = MIN(end - beg, maxlen); 1436 if (len == 0) 1437 break; 1438 /* XXX unlocked, but hardly matters. */ 1439 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1440 if (error) 1441 break; 1442 where += len; 1443 maxlen -= len; 1444 1445 /* 1446 * ... then, copy from the beginning of message buffer to 1447 * the write pointer. 1448 */ 1449 beg = 0; 1450 end = msgbufp->msg_bufx; 1451 } 1452 1453 sysctl_relock(); 1454 return (error); 1455 } 1456 1457 /* 1458 * sysctl helper routine for kern.defcorename. In the case of a new 1459 * string being assigned, check that it's not a zero-length string. 1460 * (XXX the check in -current doesn't work, but do we really care?) 1461 */ 1462 static int 1463 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1464 { 1465 int error; 1466 char *newcorename; 1467 struct sysctlnode node; 1468 1469 newcorename = PNBUF_GET(); 1470 node = *rnode; 1471 node.sysctl_data = &newcorename[0]; 1472 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1473 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1474 if (error || newp == NULL) { 1475 goto done; 1476 } 1477 1478 /* 1479 * when sysctl_lookup() deals with a string, it's guaranteed 1480 * to come back nul terminated. So there. :) 1481 */ 1482 if (strlen(newcorename) == 0) { 1483 error = EINVAL; 1484 } else { 1485 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1486 error = 0; 1487 } 1488 done: 1489 PNBUF_PUT(newcorename); 1490 return error; 1491 } 1492 1493 /* 1494 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1495 * across all cpus. 1496 */ 1497 static int 1498 sysctl_kern_cptime(SYSCTLFN_ARGS) 1499 { 1500 struct sysctlnode node = *rnode; 1501 uint64_t *cp_time = NULL; 1502 int error, n = ncpu, i; 1503 struct cpu_info *ci; 1504 CPU_INFO_ITERATOR cii; 1505 1506 /* 1507 * if you specifically pass a buffer that is the size of the 1508 * sum, or if you are probing for the size, you get the "sum" 1509 * of cp_time (and the size thereof) across all processors. 1510 * 1511 * alternately, you can pass an additional mib number and get 1512 * cp_time for that particular processor. 1513 */ 1514 switch (namelen) { 1515 case 0: 1516 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1517 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1518 n = -1; /* SUM */ 1519 } 1520 else { 1521 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1522 n = -2; /* ALL */ 1523 } 1524 break; 1525 case 1: 1526 if (name[0] < 0 || name[0] >= n) 1527 return (ENOENT); /* ENOSUCHPROCESSOR */ 1528 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1529 n = name[0]; 1530 /* 1531 * adjust these so that sysctl_lookup() will be happy 1532 */ 1533 name++; 1534 namelen--; 1535 break; 1536 default: 1537 return (EINVAL); 1538 } 1539 1540 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1541 if (cp_time == NULL) 1542 return (ENOMEM); 1543 node.sysctl_data = cp_time; 1544 memset(cp_time, 0, node.sysctl_size); 1545 1546 for (CPU_INFO_FOREACH(cii, ci)) { 1547 if (n <= 0) { 1548 for (i = 0; i < CPUSTATES; i++) { 1549 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1550 } 1551 } 1552 /* 1553 * if a specific processor was requested and we just 1554 * did it, we're done here 1555 */ 1556 if (n == 0) 1557 break; 1558 /* 1559 * if doing "all", skip to next cp_time set for next processor 1560 */ 1561 if (n == -2) 1562 cp_time += CPUSTATES; 1563 /* 1564 * if we're doing a specific processor, we're one 1565 * processor closer 1566 */ 1567 if (n > 0) 1568 n--; 1569 } 1570 1571 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1572 kmem_free(node.sysctl_data, node.sysctl_size); 1573 return (error); 1574 } 1575 1576 #if NPTY > 0 1577 /* 1578 * sysctl helper routine for kern.maxptys. Ensures that any new value 1579 * is acceptable to the pty subsystem. 1580 */ 1581 static int 1582 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1583 { 1584 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1585 int error, xmax; 1586 struct sysctlnode node; 1587 1588 /* get current value of maxptys */ 1589 xmax = pty_maxptys(0, 0); 1590 1591 node = *rnode; 1592 node.sysctl_data = &xmax; 1593 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1594 if (error || newp == NULL) 1595 return (error); 1596 1597 if (xmax != pty_maxptys(xmax, 1)) 1598 return (EINVAL); 1599 1600 return (0); 1601 } 1602 #endif /* NPTY > 0 */ 1603 1604 /* 1605 * sysctl helper routine for kern.sbmax. Basically just ensures that 1606 * any new value is not too small. 1607 */ 1608 static int 1609 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1610 { 1611 int error, new_sbmax; 1612 struct sysctlnode node; 1613 1614 new_sbmax = sb_max; 1615 node = *rnode; 1616 node.sysctl_data = &new_sbmax; 1617 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1618 if (error || newp == NULL) 1619 return (error); 1620 1621 KERNEL_LOCK(1, NULL); 1622 error = sb_max_set(new_sbmax); 1623 KERNEL_UNLOCK_ONE(NULL); 1624 1625 return (error); 1626 } 1627 1628 /* 1629 * sysctl helper routine for kern.urandom node. Picks a random number 1630 * for you. 1631 */ 1632 static int 1633 sysctl_kern_urnd(SYSCTLFN_ARGS) 1634 { 1635 #if NRND > 0 1636 int v, rv; 1637 1638 KERNEL_LOCK(1, NULL); 1639 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1640 KERNEL_UNLOCK_ONE(NULL); 1641 if (rv == sizeof(v)) { 1642 struct sysctlnode node = *rnode; 1643 node.sysctl_data = &v; 1644 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1645 } 1646 else 1647 return (EIO); /*XXX*/ 1648 #else 1649 return (EOPNOTSUPP); 1650 #endif 1651 } 1652 1653 /* 1654 * sysctl helper routine for kern.arandom node. Picks a random number 1655 * for you. 1656 */ 1657 static int 1658 sysctl_kern_arnd(SYSCTLFN_ARGS) 1659 { 1660 #if NRND > 0 1661 int error; 1662 void *v; 1663 struct sysctlnode node = *rnode; 1664 1665 if (*oldlenp == 0) 1666 return 0; 1667 if (*oldlenp > 8192) 1668 return E2BIG; 1669 1670 v = kmem_alloc(*oldlenp, KM_SLEEP); 1671 arc4randbytes(v, *oldlenp); 1672 node.sysctl_data = v; 1673 node.sysctl_size = *oldlenp; 1674 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1675 kmem_free(v, *oldlenp); 1676 return error; 1677 #else 1678 return (EOPNOTSUPP); 1679 #endif 1680 } 1681 /* 1682 * sysctl helper routine to do kern.lwp.* work. 1683 */ 1684 static int 1685 sysctl_kern_lwp(SYSCTLFN_ARGS) 1686 { 1687 struct kinfo_lwp klwp; 1688 struct proc *p; 1689 struct lwp *l2, *l3; 1690 char *where, *dp; 1691 int pid, elem_size, elem_count; 1692 int buflen, needed, error; 1693 bool gotit; 1694 1695 if (namelen == 1 && name[0] == CTL_QUERY) 1696 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1697 1698 dp = where = oldp; 1699 buflen = where != NULL ? *oldlenp : 0; 1700 error = needed = 0; 1701 1702 if (newp != NULL || namelen != 3) 1703 return (EINVAL); 1704 pid = name[0]; 1705 elem_size = name[1]; 1706 elem_count = name[2]; 1707 1708 sysctl_unlock(); 1709 if (pid == -1) { 1710 mutex_enter(proc_lock); 1711 LIST_FOREACH(p, &allproc, p_list) { 1712 /* Grab a hold on the process. */ 1713 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1714 continue; 1715 } 1716 mutex_exit(proc_lock); 1717 1718 mutex_enter(p->p_lock); 1719 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1720 if (buflen >= elem_size && elem_count > 0) { 1721 lwp_lock(l2); 1722 fill_lwp(l2, &klwp); 1723 lwp_unlock(l2); 1724 mutex_exit(p->p_lock); 1725 1726 /* 1727 * Copy out elem_size, but not 1728 * larger than the size of a 1729 * struct kinfo_proc2. 1730 */ 1731 error = dcopyout(l, &klwp, dp, 1732 min(sizeof(klwp), elem_size)); 1733 if (error) { 1734 rw_exit(&p->p_reflock); 1735 goto cleanup; 1736 } 1737 mutex_enter(p->p_lock); 1738 LIST_FOREACH(l3, &p->p_lwps, 1739 l_sibling) { 1740 if (l2 == l3) 1741 break; 1742 } 1743 if (l3 == NULL) { 1744 mutex_exit(p->p_lock); 1745 rw_exit(&p->p_reflock); 1746 error = EAGAIN; 1747 goto cleanup; 1748 } 1749 dp += elem_size; 1750 buflen -= elem_size; 1751 elem_count--; 1752 } 1753 needed += elem_size; 1754 } 1755 mutex_exit(p->p_lock); 1756 1757 /* Drop reference to process. */ 1758 mutex_enter(proc_lock); 1759 rw_exit(&p->p_reflock); 1760 } 1761 mutex_exit(proc_lock); 1762 } else { 1763 mutex_enter(proc_lock); 1764 p = p_find(pid, PFIND_LOCKED); 1765 if (p == NULL) { 1766 error = ESRCH; 1767 mutex_exit(proc_lock); 1768 goto cleanup; 1769 } 1770 /* Grab a hold on the process. */ 1771 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1772 mutex_exit(proc_lock); 1773 if (!gotit) { 1774 error = ESRCH; 1775 goto cleanup; 1776 } 1777 1778 mutex_enter(p->p_lock); 1779 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1780 if (buflen >= elem_size && elem_count > 0) { 1781 lwp_lock(l2); 1782 fill_lwp(l2, &klwp); 1783 lwp_unlock(l2); 1784 mutex_exit(p->p_lock); 1785 /* 1786 * Copy out elem_size, but not larger than 1787 * the size of a struct kinfo_proc2. 1788 */ 1789 error = dcopyout(l, &klwp, dp, 1790 min(sizeof(klwp), elem_size)); 1791 if (error) { 1792 rw_exit(&p->p_reflock); 1793 goto cleanup; 1794 } 1795 mutex_enter(p->p_lock); 1796 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1797 if (l2 == l3) 1798 break; 1799 } 1800 if (l3 == NULL) { 1801 mutex_exit(p->p_lock); 1802 rw_exit(&p->p_reflock); 1803 error = EAGAIN; 1804 goto cleanup; 1805 } 1806 dp += elem_size; 1807 buflen -= elem_size; 1808 elem_count--; 1809 } 1810 needed += elem_size; 1811 } 1812 mutex_exit(p->p_lock); 1813 1814 /* Drop reference to process. */ 1815 rw_exit(&p->p_reflock); 1816 } 1817 1818 if (where != NULL) { 1819 *oldlenp = dp - where; 1820 if (needed > *oldlenp) { 1821 sysctl_relock(); 1822 return (ENOMEM); 1823 } 1824 } else { 1825 needed += KERN_LWPSLOP; 1826 *oldlenp = needed; 1827 } 1828 error = 0; 1829 cleanup: 1830 sysctl_relock(); 1831 return (error); 1832 } 1833 1834 /* 1835 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1836 * given value is not too large or two small, and is at least one 1837 * timer tick if not zero. 1838 */ 1839 static int 1840 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1841 { 1842 /* userland sees value in ms, internally is in ticks */ 1843 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1844 int error, timo, lsleep; 1845 struct sysctlnode node; 1846 1847 lsleep = forkfsleep * 1000 / hz; 1848 node = *rnode; 1849 node.sysctl_data = &lsleep; 1850 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1851 if (error || newp == NULL) 1852 return (error); 1853 1854 /* refuse negative values, and overly 'long time' */ 1855 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1856 return (EINVAL); 1857 1858 timo = mstohz(lsleep); 1859 1860 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1861 if (lsleep != 0 && timo == 0) 1862 forkfsleep = 1; 1863 else 1864 forkfsleep = timo; 1865 1866 return (0); 1867 } 1868 1869 /* 1870 * sysctl helper routine for kern.root_partition 1871 */ 1872 static int 1873 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1874 { 1875 int rootpart = DISKPART(rootdev); 1876 struct sysctlnode node = *rnode; 1877 1878 node.sysctl_data = &rootpart; 1879 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1880 } 1881 1882 /* 1883 * sysctl helper function for kern.drivers 1884 */ 1885 static int 1886 sysctl_kern_drivers(SYSCTLFN_ARGS) 1887 { 1888 int error; 1889 size_t buflen; 1890 struct kinfo_drivers kd; 1891 char *start, *where; 1892 const char *dname; 1893 int i; 1894 extern struct devsw_conv *devsw_conv; 1895 extern int max_devsw_convs; 1896 1897 if (newp != NULL || namelen != 0) 1898 return (EINVAL); 1899 1900 start = where = oldp; 1901 buflen = *oldlenp; 1902 if (where == NULL) { 1903 *oldlenp = max_devsw_convs * sizeof kd; 1904 return 0; 1905 } 1906 1907 /* 1908 * An array of kinfo_drivers structures 1909 */ 1910 error = 0; 1911 sysctl_unlock(); 1912 mutex_enter(&specfs_lock); 1913 for (i = 0; i < max_devsw_convs; i++) { 1914 dname = devsw_conv[i].d_name; 1915 if (dname == NULL) 1916 continue; 1917 if (buflen < sizeof kd) { 1918 error = ENOMEM; 1919 break; 1920 } 1921 memset(&kd, 0, sizeof(kd)); 1922 kd.d_bmajor = devsw_conv[i].d_bmajor; 1923 kd.d_cmajor = devsw_conv[i].d_cmajor; 1924 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1925 mutex_exit(&specfs_lock); 1926 error = dcopyout(l, &kd, where, sizeof kd); 1927 mutex_enter(&specfs_lock); 1928 if (error != 0) 1929 break; 1930 buflen -= sizeof kd; 1931 where += sizeof kd; 1932 } 1933 mutex_exit(&specfs_lock); 1934 sysctl_relock(); 1935 *oldlenp = where - start; 1936 return error; 1937 } 1938 1939 /* 1940 * sysctl helper function for kern.file2 1941 */ 1942 static int 1943 sysctl_kern_file2(SYSCTLFN_ARGS) 1944 { 1945 struct proc *p; 1946 struct file *fp, *tp, *np; 1947 struct filedesc *fd; 1948 struct kinfo_file kf; 1949 char *dp; 1950 u_int i, op; 1951 size_t len, needed, elem_size, out_size; 1952 int error, arg, elem_count; 1953 fdfile_t *ff; 1954 1955 if (namelen == 1 && name[0] == CTL_QUERY) 1956 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1957 1958 if (namelen != 4) 1959 return (EINVAL); 1960 1961 error = 0; 1962 dp = oldp; 1963 len = (oldp != NULL) ? *oldlenp : 0; 1964 op = name[0]; 1965 arg = name[1]; 1966 elem_size = name[2]; 1967 elem_count = name[3]; 1968 out_size = MIN(sizeof(kf), elem_size); 1969 needed = 0; 1970 1971 if (elem_size < 1 || elem_count < 0) 1972 return (EINVAL); 1973 1974 switch (op) { 1975 case KERN_FILE_BYFILE: 1976 /* 1977 * doesn't use arg so it must be zero 1978 */ 1979 if (arg != 0) 1980 return (EINVAL); 1981 sysctl_unlock(); 1982 /* 1983 * allocate dummy file descriptor to make position in list 1984 */ 1985 if ((tp = fgetdummy()) == NULL) { 1986 sysctl_relock(); 1987 return ENOMEM; 1988 } 1989 mutex_enter(&filelist_lock); 1990 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1991 np = LIST_NEXT(fp, f_list); 1992 mutex_enter(&fp->f_lock); 1993 if (fp->f_count == 0) { 1994 mutex_exit(&fp->f_lock); 1995 continue; 1996 } 1997 /* 1998 * XXX Need to prevent that from being an alternative 1999 * XXX way for getting process information. 2000 */ 2001 if (kauth_authorize_generic(l->l_cred, 2002 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 2003 mutex_exit(&fp->f_lock); 2004 continue; 2005 } 2006 if (len >= elem_size && elem_count > 0) { 2007 fill_file(&kf, fp, NULL, 0, 0); 2008 LIST_INSERT_AFTER(fp, tp, f_list); 2009 mutex_exit(&fp->f_lock); 2010 mutex_exit(&filelist_lock); 2011 error = dcopyout(l, &kf, dp, out_size); 2012 mutex_enter(&filelist_lock); 2013 np = LIST_NEXT(tp, f_list); 2014 LIST_REMOVE(tp, f_list); 2015 if (error) { 2016 break; 2017 } 2018 dp += elem_size; 2019 len -= elem_size; 2020 } else { 2021 mutex_exit(&fp->f_lock); 2022 } 2023 if (elem_count > 0) { 2024 needed += elem_size; 2025 if (elem_count != INT_MAX) 2026 elem_count--; 2027 } 2028 } 2029 mutex_exit(&filelist_lock); 2030 fputdummy(tp); 2031 sysctl_relock(); 2032 break; 2033 case KERN_FILE_BYPID: 2034 if (arg < -1) 2035 /* -1 means all processes */ 2036 return (EINVAL); 2037 sysctl_unlock(); 2038 mutex_enter(proc_lock); 2039 LIST_FOREACH(p, &allproc, p_list) { 2040 if (p->p_stat == SIDL) { 2041 /* skip embryonic processes */ 2042 continue; 2043 } 2044 if (arg > 0 && p->p_pid != arg) { 2045 /* pick only the one we want */ 2046 /* XXX want 0 to mean "kernel files" */ 2047 continue; 2048 } 2049 mutex_enter(p->p_lock); 2050 error = kauth_authorize_process(l->l_cred, 2051 KAUTH_PROCESS_CANSEE, p, 2052 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_OPENFILES), 2053 NULL, NULL); 2054 mutex_exit(p->p_lock); 2055 if (error != 0) { 2056 continue; 2057 } 2058 2059 /* 2060 * Grab a hold on the process. 2061 */ 2062 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 2063 continue; 2064 } 2065 mutex_exit(proc_lock); 2066 2067 /* XXX Do we need to check permission per file? */ 2068 fd = p->p_fd; 2069 mutex_enter(&fd->fd_lock); 2070 for (i = 0; i < fd->fd_nfiles; i++) { 2071 if ((ff = fd->fd_ofiles[i]) == NULL) { 2072 continue; 2073 } 2074 mutex_enter(&ff->ff_lock); 2075 if ((fp = ff->ff_file) == NULL) { 2076 mutex_exit(&ff->ff_lock); 2077 continue; 2078 } 2079 if (len >= elem_size && elem_count > 0) { 2080 mutex_enter(&fp->f_lock); 2081 fill_file(&kf, fp, ff, i, p->p_pid); 2082 mutex_exit(&fp->f_lock); 2083 mutex_exit(&ff->ff_lock); 2084 mutex_exit(&fd->fd_lock); 2085 error = dcopyout(l, &kf, dp, out_size); 2086 mutex_enter(&fd->fd_lock); 2087 if (error) 2088 break; 2089 dp += elem_size; 2090 len -= elem_size; 2091 } else { 2092 mutex_exit(&ff->ff_lock); 2093 } 2094 if (elem_count > 0) { 2095 needed += elem_size; 2096 if (elem_count != INT_MAX) 2097 elem_count--; 2098 } 2099 } 2100 mutex_exit(&fd->fd_lock); 2101 2102 /* 2103 * Release reference to process. 2104 */ 2105 mutex_enter(proc_lock); 2106 rw_exit(&p->p_reflock); 2107 } 2108 mutex_exit(proc_lock); 2109 sysctl_relock(); 2110 break; 2111 default: 2112 return (EINVAL); 2113 } 2114 2115 if (oldp == NULL) 2116 needed += KERN_FILESLOP * elem_size; 2117 *oldlenp = needed; 2118 2119 return (error); 2120 } 2121 2122 static void 2123 fill_file(struct kinfo_file *kp, const file_t *fp, const fdfile_t *ff, 2124 int i, pid_t pid) 2125 { 2126 2127 memset(kp, 0, sizeof(*kp)); 2128 2129 kp->ki_fileaddr = PTRTOUINT64(fp); 2130 kp->ki_flag = fp->f_flag; 2131 kp->ki_iflags = fp->f_iflags; 2132 kp->ki_ftype = fp->f_type; 2133 kp->ki_count = fp->f_count; 2134 kp->ki_msgcount = fp->f_msgcount; 2135 kp->ki_fucred = PTRTOUINT64(fp->f_cred); 2136 kp->ki_fuid = kauth_cred_geteuid(fp->f_cred); 2137 kp->ki_fgid = kauth_cred_getegid(fp->f_cred); 2138 kp->ki_fops = PTRTOUINT64(fp->f_ops); 2139 kp->ki_foffset = fp->f_offset; 2140 kp->ki_fdata = PTRTOUINT64(fp->f_data); 2141 2142 /* vnode information to glue this file to something */ 2143 if (fp->f_type == DTYPE_VNODE) { 2144 struct vnode *vp = (struct vnode *)fp->f_data; 2145 2146 kp->ki_vun = PTRTOUINT64(vp->v_un.vu_socket); 2147 kp->ki_vsize = vp->v_size; 2148 kp->ki_vtype = vp->v_type; 2149 kp->ki_vtag = vp->v_tag; 2150 kp->ki_vdata = PTRTOUINT64(vp->v_data); 2151 } 2152 2153 /* process information when retrieved via KERN_FILE_BYPID */ 2154 if (ff != NULL) { 2155 kp->ki_pid = pid; 2156 kp->ki_fd = i; 2157 kp->ki_ofileflags = ff->ff_exclose; 2158 kp->ki_usecount = ff->ff_refcnt; 2159 } 2160 } 2161 2162 static int 2163 sysctl_doeproc(SYSCTLFN_ARGS) 2164 { 2165 struct eproc *eproc; 2166 struct kinfo_proc2 *kproc2; 2167 struct kinfo_proc *dp; 2168 struct proc *p, *next, *marker; 2169 char *where, *dp2; 2170 int type, op, arg, error; 2171 u_int elem_size, elem_count; 2172 size_t buflen, needed; 2173 bool match, zombie, mmmbrains; 2174 2175 if (namelen == 1 && name[0] == CTL_QUERY) 2176 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2177 2178 dp = oldp; 2179 dp2 = where = oldp; 2180 buflen = where != NULL ? *oldlenp : 0; 2181 error = 0; 2182 needed = 0; 2183 type = rnode->sysctl_num; 2184 2185 if (type == KERN_PROC) { 2186 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 2187 return (EINVAL); 2188 op = name[0]; 2189 if (op != KERN_PROC_ALL) 2190 arg = name[1]; 2191 else 2192 arg = 0; /* Quell compiler warning */ 2193 elem_size = elem_count = 0; /* Ditto */ 2194 } else { 2195 if (namelen != 4) 2196 return (EINVAL); 2197 op = name[0]; 2198 arg = name[1]; 2199 elem_size = name[2]; 2200 elem_count = name[3]; 2201 } 2202 2203 sysctl_unlock(); 2204 2205 if (type == KERN_PROC) { 2206 eproc = kmem_alloc(sizeof(*eproc), KM_SLEEP); 2207 kproc2 = NULL; 2208 } else { 2209 eproc = NULL; 2210 kproc2 = kmem_alloc(sizeof(*kproc2), KM_SLEEP); 2211 } 2212 marker = kmem_alloc(sizeof(*marker), KM_SLEEP); 2213 2214 mutex_enter(proc_lock); 2215 mmmbrains = false; 2216 for (p = LIST_FIRST(&allproc);; p = next) { 2217 if (p == NULL) { 2218 if (!mmmbrains) { 2219 p = LIST_FIRST(&zombproc); 2220 mmmbrains = true; 2221 } 2222 if (p == NULL) 2223 break; 2224 } 2225 next = LIST_NEXT(p, p_list); 2226 2227 /* 2228 * Skip embryonic processes. 2229 */ 2230 if (p->p_stat == SIDL) 2231 continue; 2232 2233 mutex_enter(p->p_lock); 2234 error = kauth_authorize_process(l->l_cred, 2235 KAUTH_PROCESS_CANSEE, p, 2236 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENTRY), NULL, NULL); 2237 if (error != 0) { 2238 mutex_exit(p->p_lock); 2239 continue; 2240 } 2241 2242 /* 2243 * TODO - make more efficient (see notes below). 2244 * do by session. 2245 */ 2246 switch (op) { 2247 case KERN_PROC_PID: 2248 /* could do this with just a lookup */ 2249 match = (p->p_pid == (pid_t)arg); 2250 break; 2251 2252 case KERN_PROC_PGRP: 2253 /* could do this by traversing pgrp */ 2254 match = (p->p_pgrp->pg_id == (pid_t)arg); 2255 break; 2256 2257 case KERN_PROC_SESSION: 2258 match = (p->p_session->s_sid == (pid_t)arg); 2259 break; 2260 2261 case KERN_PROC_TTY: 2262 match = true; 2263 if (arg == (int) KERN_PROC_TTY_REVOKE) { 2264 if ((p->p_lflag & PL_CONTROLT) == 0 || 2265 p->p_session->s_ttyp == NULL || 2266 p->p_session->s_ttyvp != NULL) { 2267 match = false; 2268 } 2269 } else if ((p->p_lflag & PL_CONTROLT) == 0 || 2270 p->p_session->s_ttyp == NULL) { 2271 if ((dev_t)arg != KERN_PROC_TTY_NODEV) { 2272 match = false; 2273 } 2274 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) { 2275 match = false; 2276 } 2277 break; 2278 2279 case KERN_PROC_UID: 2280 match = (kauth_cred_geteuid(p->p_cred) == (uid_t)arg); 2281 break; 2282 2283 case KERN_PROC_RUID: 2284 match = (kauth_cred_getuid(p->p_cred) == (uid_t)arg); 2285 break; 2286 2287 case KERN_PROC_GID: 2288 match = (kauth_cred_getegid(p->p_cred) == (uid_t)arg); 2289 break; 2290 2291 case KERN_PROC_RGID: 2292 match = (kauth_cred_getgid(p->p_cred) == (uid_t)arg); 2293 break; 2294 2295 case KERN_PROC_ALL: 2296 match = true; 2297 /* allow everything */ 2298 break; 2299 2300 default: 2301 error = EINVAL; 2302 mutex_exit(p->p_lock); 2303 goto cleanup; 2304 } 2305 if (!match) { 2306 mutex_exit(p->p_lock); 2307 continue; 2308 } 2309 2310 /* 2311 * Grab a hold on the process. 2312 */ 2313 if (mmmbrains) { 2314 zombie = true; 2315 } else { 2316 zombie = !rw_tryenter(&p->p_reflock, RW_READER); 2317 } 2318 if (zombie) { 2319 LIST_INSERT_AFTER(p, marker, p_list); 2320 } 2321 2322 if (type == KERN_PROC) { 2323 if (buflen >= sizeof(struct kinfo_proc)) { 2324 fill_eproc(p, eproc, zombie); 2325 mutex_exit(p->p_lock); 2326 mutex_exit(proc_lock); 2327 error = dcopyout(l, p, &dp->kp_proc, 2328 sizeof(struct proc)); 2329 mutex_enter(proc_lock); 2330 if (error) { 2331 goto bah; 2332 } 2333 error = dcopyout(l, eproc, &dp->kp_eproc, 2334 sizeof(*eproc)); 2335 if (error) { 2336 goto bah; 2337 } 2338 dp++; 2339 buflen -= sizeof(struct kinfo_proc); 2340 } else { 2341 mutex_exit(p->p_lock); 2342 } 2343 needed += sizeof(struct kinfo_proc); 2344 } else { /* KERN_PROC2 */ 2345 if (buflen >= elem_size && elem_count > 0) { 2346 fill_kproc2(p, kproc2, zombie); 2347 mutex_exit(p->p_lock); 2348 mutex_exit(proc_lock); 2349 /* 2350 * Copy out elem_size, but not larger than 2351 * the size of a struct kinfo_proc2. 2352 */ 2353 error = dcopyout(l, kproc2, dp2, 2354 min(sizeof(*kproc2), elem_size)); 2355 mutex_enter(proc_lock); 2356 if (error) { 2357 goto bah; 2358 } 2359 dp2 += elem_size; 2360 buflen -= elem_size; 2361 elem_count--; 2362 } else { 2363 mutex_exit(p->p_lock); 2364 } 2365 needed += elem_size; 2366 } 2367 2368 /* 2369 * Release reference to process. 2370 */ 2371 if (zombie) { 2372 next = LIST_NEXT(marker, p_list); 2373 LIST_REMOVE(marker, p_list); 2374 } else { 2375 rw_exit(&p->p_reflock); 2376 } 2377 } 2378 mutex_exit(proc_lock); 2379 2380 if (where != NULL) { 2381 if (type == KERN_PROC) 2382 *oldlenp = (char *)dp - where; 2383 else 2384 *oldlenp = dp2 - where; 2385 if (needed > *oldlenp) { 2386 error = ENOMEM; 2387 goto out; 2388 } 2389 } else { 2390 needed += KERN_PROCSLOP; 2391 *oldlenp = needed; 2392 } 2393 if (kproc2) 2394 kmem_free(kproc2, sizeof(*kproc2)); 2395 if (eproc) 2396 kmem_free(eproc, sizeof(*eproc)); 2397 if (marker) 2398 kmem_free(marker, sizeof(*marker)); 2399 sysctl_relock(); 2400 return 0; 2401 bah: 2402 if (zombie) 2403 LIST_REMOVE(marker, p_list); 2404 else 2405 rw_exit(&p->p_reflock); 2406 cleanup: 2407 mutex_exit(proc_lock); 2408 out: 2409 if (kproc2) 2410 kmem_free(kproc2, sizeof(*kproc2)); 2411 if (eproc) 2412 kmem_free(eproc, sizeof(*eproc)); 2413 if (marker) 2414 kmem_free(marker, sizeof(*marker)); 2415 sysctl_relock(); 2416 return error; 2417 } 2418 2419 /* 2420 * sysctl helper routine for kern.proc_args pseudo-subtree. 2421 */ 2422 static int 2423 sysctl_kern_proc_args(SYSCTLFN_ARGS) 2424 { 2425 struct ps_strings pss; 2426 struct proc *p; 2427 size_t len, i; 2428 struct uio auio; 2429 struct iovec aiov; 2430 pid_t pid; 2431 int nargv, type, error, argvlen; 2432 char *arg; 2433 char **argv = NULL; 2434 char *tmp; 2435 struct vmspace *vmspace; 2436 vaddr_t psstr_addr; 2437 vaddr_t offsetn; 2438 vaddr_t offsetv; 2439 2440 if (namelen == 1 && name[0] == CTL_QUERY) 2441 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2442 2443 if (newp != NULL || namelen != 2) 2444 return (EINVAL); 2445 pid = name[0]; 2446 type = name[1]; 2447 argv = NULL; 2448 argvlen = 0; 2449 2450 switch (type) { 2451 case KERN_PROC_ARGV: 2452 case KERN_PROC_NARGV: 2453 case KERN_PROC_ENV: 2454 case KERN_PROC_NENV: 2455 /* ok */ 2456 break; 2457 default: 2458 return (EINVAL); 2459 } 2460 2461 sysctl_unlock(); 2462 2463 /* check pid */ 2464 mutex_enter(proc_lock); 2465 if ((p = p_find(pid, PFIND_LOCKED)) == NULL) { 2466 error = EINVAL; 2467 goto out_locked; 2468 } 2469 mutex_enter(p->p_lock); 2470 2471 /* Check permission. */ 2472 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 2473 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2474 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ARGS), NULL, NULL); 2475 else if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) 2476 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2477 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENV), NULL, NULL); 2478 else 2479 error = EINVAL; /* XXXGCC */ 2480 if (error) { 2481 mutex_exit(p->p_lock); 2482 goto out_locked; 2483 } 2484 2485 if (oldp == NULL) { 2486 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 2487 *oldlenp = sizeof (int); 2488 else 2489 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 2490 error = 0; 2491 mutex_exit(p->p_lock); 2492 goto out_locked; 2493 } 2494 2495 /* 2496 * Zombies don't have a stack, so we can't read their psstrings. 2497 * System processes also don't have a user stack. 2498 */ 2499 if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) { 2500 error = EINVAL; 2501 mutex_exit(p->p_lock); 2502 goto out_locked; 2503 } 2504 2505 /* 2506 * Lock the process down in memory. 2507 */ 2508 psstr_addr = (vaddr_t)p->p_psstr; 2509 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) { 2510 offsetn = p->p_psnargv; 2511 offsetv = p->p_psargv; 2512 } else { 2513 offsetn = p->p_psnenv; 2514 offsetv = p->p_psenv; 2515 } 2516 vmspace = p->p_vmspace; 2517 uvmspace_addref(vmspace); 2518 mutex_exit(p->p_lock); 2519 mutex_exit(proc_lock); 2520 2521 /* 2522 * Allocate a temporary buffer to hold the arguments. 2523 */ 2524 arg = kmem_alloc(PAGE_SIZE, KM_SLEEP); 2525 2526 /* 2527 * Read in the ps_strings structure. 2528 */ 2529 aiov.iov_base = &pss; 2530 aiov.iov_len = sizeof(pss); 2531 auio.uio_iov = &aiov; 2532 auio.uio_iovcnt = 1; 2533 auio.uio_offset = psstr_addr; 2534 auio.uio_resid = sizeof(pss); 2535 auio.uio_rw = UIO_READ; 2536 UIO_SETUP_SYSSPACE(&auio); 2537 error = uvm_io(&vmspace->vm_map, &auio); 2538 if (error) 2539 goto done; 2540 2541 memcpy(&nargv, (char *)&pss + offsetn, sizeof(nargv)); 2542 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 2543 error = dcopyout(l, &nargv, oldp, sizeof(nargv)); 2544 *oldlenp = sizeof(nargv); 2545 goto done; 2546 } 2547 /* 2548 * Now read the address of the argument vector. 2549 */ 2550 switch (type) { 2551 case KERN_PROC_ARGV: 2552 /* FALLTHROUGH */ 2553 case KERN_PROC_ENV: 2554 memcpy(&tmp, (char *)&pss + offsetv, sizeof(tmp)); 2555 break; 2556 default: 2557 error = EINVAL; 2558 goto done; 2559 } 2560 2561 #ifdef COMPAT_NETBSD32 2562 if (p->p_flag & PK_32) 2563 len = sizeof(netbsd32_charp) * nargv; 2564 else 2565 #endif 2566 len = sizeof(char *) * nargv; 2567 2568 if ((argvlen = len) != 0) 2569 argv = kmem_alloc(len, KM_SLEEP); 2570 2571 aiov.iov_base = argv; 2572 aiov.iov_len = len; 2573 auio.uio_iov = &aiov; 2574 auio.uio_iovcnt = 1; 2575 auio.uio_offset = (off_t)(unsigned long)tmp; 2576 auio.uio_resid = len; 2577 auio.uio_rw = UIO_READ; 2578 UIO_SETUP_SYSSPACE(&auio); 2579 error = uvm_io(&vmspace->vm_map, &auio); 2580 if (error) 2581 goto done; 2582 2583 /* 2584 * Now copy each string. 2585 */ 2586 len = 0; /* bytes written to user buffer */ 2587 for (i = 0; i < nargv; i++) { 2588 int finished = 0; 2589 vaddr_t base; 2590 size_t xlen; 2591 int j; 2592 2593 #ifdef COMPAT_NETBSD32 2594 if (p->p_flag & PK_32) { 2595 netbsd32_charp *argv32; 2596 2597 argv32 = (netbsd32_charp *)argv; 2598 base = (vaddr_t)NETBSD32PTR64(argv32[i]); 2599 } else 2600 #endif 2601 base = (vaddr_t)argv[i]; 2602 2603 /* 2604 * The program has messed around with its arguments, 2605 * possibly deleting some, and replacing them with 2606 * NULL's. Treat this as the last argument and not 2607 * a failure. 2608 */ 2609 if (base == 0) 2610 break; 2611 2612 while (!finished) { 2613 xlen = PAGE_SIZE - (base & PAGE_MASK); 2614 2615 aiov.iov_base = arg; 2616 aiov.iov_len = PAGE_SIZE; 2617 auio.uio_iov = &aiov; 2618 auio.uio_iovcnt = 1; 2619 auio.uio_offset = base; 2620 auio.uio_resid = xlen; 2621 auio.uio_rw = UIO_READ; 2622 UIO_SETUP_SYSSPACE(&auio); 2623 error = uvm_io(&vmspace->vm_map, &auio); 2624 if (error) 2625 goto done; 2626 2627 /* Look for the end of the string */ 2628 for (j = 0; j < xlen; j++) { 2629 if (arg[j] == '\0') { 2630 xlen = j + 1; 2631 finished = 1; 2632 break; 2633 } 2634 } 2635 2636 /* Check for user buffer overflow */ 2637 if (len + xlen > *oldlenp) { 2638 finished = 1; 2639 if (len > *oldlenp) 2640 xlen = 0; 2641 else 2642 xlen = *oldlenp - len; 2643 } 2644 2645 /* Copyout the page */ 2646 error = dcopyout(l, arg, (char *)oldp + len, xlen); 2647 if (error) 2648 goto done; 2649 2650 len += xlen; 2651 base += xlen; 2652 } 2653 } 2654 *oldlenp = len; 2655 2656 done: 2657 if (argvlen != 0) 2658 kmem_free(argv, argvlen); 2659 uvmspace_free(vmspace); 2660 kmem_free(arg, PAGE_SIZE); 2661 sysctl_relock(); 2662 return error; 2663 2664 out_locked: 2665 mutex_exit(proc_lock); 2666 sysctl_relock(); 2667 return error; 2668 } 2669 2670 static int 2671 sysctl_security_setidcore(SYSCTLFN_ARGS) 2672 { 2673 int newsize, error; 2674 struct sysctlnode node; 2675 2676 node = *rnode; 2677 node.sysctl_data = &newsize; 2678 newsize = *(int *)rnode->sysctl_data; 2679 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2680 if (error || newp == NULL) 2681 return error; 2682 2683 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2684 0, NULL, NULL, NULL)) 2685 return (EPERM); 2686 2687 *(int *)rnode->sysctl_data = newsize; 2688 2689 return 0; 2690 } 2691 2692 static int 2693 sysctl_security_setidcorename(SYSCTLFN_ARGS) 2694 { 2695 int error; 2696 char *newsetidcorename; 2697 struct sysctlnode node; 2698 2699 newsetidcorename = PNBUF_GET(); 2700 node = *rnode; 2701 node.sysctl_data = newsetidcorename; 2702 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 2703 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2704 if (error || newp == NULL) { 2705 goto out; 2706 } 2707 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2708 0, NULL, NULL, NULL)) { 2709 error = EPERM; 2710 goto out; 2711 } 2712 if (strlen(newsetidcorename) == 0) { 2713 error = EINVAL; 2714 goto out; 2715 } 2716 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 2717 out: 2718 PNBUF_PUT(newsetidcorename); 2719 return error; 2720 } 2721 2722 /* 2723 * sysctl helper routine for kern.cp_id node. Maps cpus to their 2724 * cpuids. 2725 */ 2726 static int 2727 sysctl_kern_cpid(SYSCTLFN_ARGS) 2728 { 2729 struct sysctlnode node = *rnode; 2730 uint64_t *cp_id = NULL; 2731 int error, n = ncpu; 2732 struct cpu_info *ci; 2733 CPU_INFO_ITERATOR cii; 2734 2735 /* 2736 * Here you may either retrieve a single cpu id or the whole 2737 * set. The size you get back when probing depends on what 2738 * you ask for. 2739 */ 2740 switch (namelen) { 2741 case 0: 2742 node.sysctl_size = n * sizeof(uint64_t); 2743 n = -2; /* ALL */ 2744 break; 2745 case 1: 2746 if (name[0] < 0 || name[0] >= n) 2747 return (ENOENT); /* ENOSUCHPROCESSOR */ 2748 node.sysctl_size = sizeof(uint64_t); 2749 n = name[0]; 2750 /* 2751 * adjust these so that sysctl_lookup() will be happy 2752 */ 2753 name++; 2754 namelen--; 2755 break; 2756 default: 2757 return (EINVAL); 2758 } 2759 2760 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 2761 if (cp_id == NULL) 2762 return (ENOMEM); 2763 node.sysctl_data = cp_id; 2764 memset(cp_id, 0, node.sysctl_size); 2765 2766 for (CPU_INFO_FOREACH(cii, ci)) { 2767 if (n <= 0) 2768 cp_id[0] = cpu_index(ci); 2769 /* 2770 * if a specific processor was requested and we just 2771 * did it, we're done here 2772 */ 2773 if (n == 0) 2774 break; 2775 /* 2776 * if doing "all", skip to next cp_id slot for next processor 2777 */ 2778 if (n == -2) 2779 cp_id++; 2780 /* 2781 * if we're doing a specific processor, we're one 2782 * processor closer 2783 */ 2784 if (n > 0) 2785 n--; 2786 } 2787 2788 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2789 kmem_free(node.sysctl_data, node.sysctl_size); 2790 return (error); 2791 } 2792 2793 /* 2794 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 2795 * calculate on the fly taking into account integer overflow and the 2796 * current wired count. 2797 */ 2798 static int 2799 sysctl_hw_usermem(SYSCTLFN_ARGS) 2800 { 2801 u_int ui; 2802 u_quad_t uq; 2803 struct sysctlnode node; 2804 2805 node = *rnode; 2806 switch (rnode->sysctl_num) { 2807 case HW_USERMEM: 2808 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 2809 ui = UINT_MAX; 2810 else 2811 ui *= PAGE_SIZE; 2812 node.sysctl_data = &ui; 2813 break; 2814 case HW_USERMEM64: 2815 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2816 node.sysctl_data = &uq; 2817 break; 2818 default: 2819 return (EINVAL); 2820 } 2821 2822 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2823 } 2824 2825 /* 2826 * sysctl helper routine for kern.cnmagic node. Pulls the old value 2827 * out, encoded, and stuffs the new value in for decoding. 2828 */ 2829 static int 2830 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2831 { 2832 char magic[CNS_LEN]; 2833 int error; 2834 struct sysctlnode node; 2835 2836 if (oldp) 2837 cn_get_magic(magic, CNS_LEN); 2838 node = *rnode; 2839 node.sysctl_data = &magic[0]; 2840 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2841 if (error || newp == NULL) 2842 return (error); 2843 2844 return (cn_set_magic(magic)); 2845 } 2846 2847 /* 2848 * ******************************************************************** 2849 * section 3: public helper routines that are used for more than one 2850 * node 2851 * ******************************************************************** 2852 */ 2853 2854 /* 2855 * sysctl helper routine for the kern.root_device node and some ports' 2856 * machdep.root_device nodes. 2857 */ 2858 int 2859 sysctl_root_device(SYSCTLFN_ARGS) 2860 { 2861 struct sysctlnode node; 2862 2863 node = *rnode; 2864 node.sysctl_data = root_device->dv_xname; 2865 node.sysctl_size = strlen(device_xname(root_device)) + 1; 2866 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2867 } 2868 2869 /* 2870 * sysctl helper routine for kern.consdev, dependent on the current 2871 * state of the console. Also used for machdep.console_device on some 2872 * ports. 2873 */ 2874 int 2875 sysctl_consdev(SYSCTLFN_ARGS) 2876 { 2877 dev_t consdev; 2878 struct sysctlnode node; 2879 2880 if (cn_tab != NULL) 2881 consdev = cn_tab->cn_dev; 2882 else 2883 consdev = NODEV; 2884 node = *rnode; 2885 node.sysctl_data = &consdev; 2886 node.sysctl_size = sizeof(consdev); 2887 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2888 } 2889 2890 /* 2891 * ******************************************************************** 2892 * section 4: support for some helpers 2893 * ******************************************************************** 2894 */ 2895 /* 2896 * Find the most ``active'' lwp of a process and return it for ps display 2897 * purposes 2898 */ 2899 static struct lwp * 2900 proc_active_lwp(struct proc *p) 2901 { 2902 static const int ostat[] = { 2903 0, 2904 2, /* LSIDL */ 2905 6, /* LSRUN */ 2906 5, /* LSSLEEP */ 2907 4, /* LSSTOP */ 2908 0, /* LSZOMB */ 2909 1, /* LSDEAD */ 2910 7, /* LSONPROC */ 2911 3 /* LSSUSPENDED */ 2912 }; 2913 2914 struct lwp *l, *lp = NULL; 2915 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 2916 KASSERT(l->l_stat >= 0 && l->l_stat < __arraycount(ostat)); 2917 if (lp == NULL || 2918 ostat[l->l_stat] > ostat[lp->l_stat] || 2919 (ostat[l->l_stat] == ostat[lp->l_stat] && 2920 l->l_cpticks > lp->l_cpticks)) { 2921 lp = l; 2922 continue; 2923 } 2924 } 2925 return lp; 2926 } 2927 2928 2929 /* 2930 * Fill in a kinfo_proc2 structure for the specified process. 2931 */ 2932 static void 2933 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki, bool zombie) 2934 { 2935 struct tty *tp; 2936 struct lwp *l, *l2; 2937 struct timeval ut, st, rt; 2938 sigset_t ss1, ss2; 2939 struct rusage ru; 2940 struct vmspace *vm; 2941 2942 KASSERT(mutex_owned(proc_lock)); 2943 KASSERT(mutex_owned(p->p_lock)); 2944 2945 sigemptyset(&ss1); 2946 sigemptyset(&ss2); 2947 memset(ki, 0, sizeof(*ki)); 2948 2949 ki->p_paddr = PTRTOUINT64(p); 2950 ki->p_fd = PTRTOUINT64(p->p_fd); 2951 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2952 ki->p_stats = PTRTOUINT64(p->p_stats); 2953 ki->p_limit = PTRTOUINT64(p->p_limit); 2954 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2955 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2956 ki->p_sess = PTRTOUINT64(p->p_session); 2957 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2958 ki->p_ru = PTRTOUINT64(&p->p_stats->p_ru); 2959 ki->p_eflag = 0; 2960 ki->p_exitsig = p->p_exitsig; 2961 ki->p_flag = sysctl_map_flags(sysctl_flagmap, p->p_flag); 2962 ki->p_flag |= sysctl_map_flags(sysctl_sflagmap, p->p_sflag); 2963 ki->p_flag |= sysctl_map_flags(sysctl_slflagmap, p->p_slflag); 2964 ki->p_flag |= sysctl_map_flags(sysctl_lflagmap, p->p_lflag); 2965 ki->p_flag |= sysctl_map_flags(sysctl_stflagmap, p->p_stflag); 2966 ki->p_pid = p->p_pid; 2967 if (p->p_pptr) 2968 ki->p_ppid = p->p_pptr->p_pid; 2969 else 2970 ki->p_ppid = 0; 2971 ki->p_uid = kauth_cred_geteuid(p->p_cred); 2972 ki->p_ruid = kauth_cred_getuid(p->p_cred); 2973 ki->p_gid = kauth_cred_getegid(p->p_cred); 2974 ki->p_rgid = kauth_cred_getgid(p->p_cred); 2975 ki->p_svuid = kauth_cred_getsvuid(p->p_cred); 2976 ki->p_svgid = kauth_cred_getsvgid(p->p_cred); 2977 ki->p_ngroups = kauth_cred_ngroups(p->p_cred); 2978 kauth_cred_getgroups(p->p_cred, ki->p_groups, 2979 min(ki->p_ngroups, sizeof(ki->p_groups) / sizeof(ki->p_groups[0])), 2980 UIO_SYSSPACE); 2981 2982 ki->p_uticks = p->p_uticks; 2983 ki->p_sticks = p->p_sticks; 2984 ki->p_iticks = p->p_iticks; 2985 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2986 ki->p_tracep = PTRTOUINT64(p->p_tracep); 2987 ki->p_traceflag = p->p_traceflag; 2988 2989 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2990 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2991 2992 ki->p_cpticks = 0; 2993 ki->p_pctcpu = p->p_pctcpu; 2994 ki->p_estcpu = 0; 2995 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2996 ki->p_realstat = p->p_stat; 2997 ki->p_nice = p->p_nice; 2998 ki->p_xstat = p->p_xstat; 2999 ki->p_acflag = p->p_acflag; 3000 3001 strncpy(ki->p_comm, p->p_comm, 3002 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 3003 strncpy(ki->p_ename, p->p_emul->e_name, sizeof(ki->p_ename)); 3004 3005 ki->p_nlwps = p->p_nlwps; 3006 ki->p_realflag = ki->p_flag; 3007 3008 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3009 vm = p->p_vmspace; 3010 ki->p_vm_rssize = vm_resident_count(vm); 3011 ki->p_vm_tsize = vm->vm_tsize; 3012 ki->p_vm_dsize = vm->vm_dsize; 3013 ki->p_vm_ssize = vm->vm_ssize; 3014 3015 /* Pick the primary (first) LWP */ 3016 l = proc_active_lwp(p); 3017 KASSERT(l != NULL); 3018 lwp_lock(l); 3019 ki->p_nrlwps = p->p_nrlwps; 3020 ki->p_forw = 0; 3021 ki->p_back = 0; 3022 ki->p_addr = PTRTOUINT64(l->l_addr); 3023 ki->p_stat = l->l_stat; 3024 ki->p_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3025 ki->p_swtime = l->l_swtime; 3026 ki->p_slptime = l->l_slptime; 3027 if (l->l_stat == LSONPROC) 3028 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3029 else 3030 ki->p_schedflags = 0; 3031 ki->p_holdcnt = l->l_holdcnt; 3032 ki->p_priority = lwp_eprio(l); 3033 ki->p_usrpri = l->l_priority; 3034 if (l->l_wchan) 3035 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 3036 ki->p_wchan = PTRTOUINT64(l->l_wchan); 3037 ki->p_cpuid = cpu_index(l->l_cpu); 3038 lwp_unlock(l); 3039 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 3040 /* This is hardly correct, but... */ 3041 sigplusset(&l->l_sigpend.sp_set, &ss1); 3042 sigplusset(&l->l_sigmask, &ss2); 3043 ki->p_cpticks += l->l_cpticks; 3044 ki->p_pctcpu += l->l_pctcpu; 3045 ki->p_estcpu += l->l_estcpu; 3046 } 3047 } 3048 sigplusset(&p->p_sigpend.sp_set, &ss2); 3049 memcpy(&ki->p_siglist, &ss1, sizeof(ki_sigset_t)); 3050 memcpy(&ki->p_sigmask, &ss2, sizeof(ki_sigset_t)); 3051 3052 if (p->p_session != NULL) { 3053 ki->p_sid = p->p_session->s_sid; 3054 ki->p__pgid = p->p_pgrp->pg_id; 3055 if (p->p_session->s_ttyvp) 3056 ki->p_eflag |= EPROC_CTTY; 3057 if (SESS_LEADER(p)) 3058 ki->p_eflag |= EPROC_SLEADER; 3059 strncpy(ki->p_login, p->p_session->s_login, 3060 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 3061 ki->p_jobc = p->p_pgrp->pg_jobc; 3062 if ((p->p_lflag & PL_CONTROLT) && (tp = p->p_session->s_ttyp)) { 3063 ki->p_tdev = tp->t_dev; 3064 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3065 ki->p_tsess = PTRTOUINT64(tp->t_session); 3066 } else { 3067 ki->p_tdev = NODEV; 3068 } 3069 } 3070 3071 if (!P_ZOMBIE(p) && !zombie) { 3072 ki->p_uvalid = 1; 3073 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 3074 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 3075 3076 calcru(p, &ut, &st, NULL, &rt); 3077 ki->p_rtime_sec = rt.tv_sec; 3078 ki->p_rtime_usec = rt.tv_usec; 3079 ki->p_uutime_sec = ut.tv_sec; 3080 ki->p_uutime_usec = ut.tv_usec; 3081 ki->p_ustime_sec = st.tv_sec; 3082 ki->p_ustime_usec = st.tv_usec; 3083 3084 memcpy(&ru, &p->p_stats->p_ru, sizeof(ru)); 3085 ki->p_uru_nvcsw = 0; 3086 ki->p_uru_nivcsw = 0; 3087 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 3088 ki->p_uru_nvcsw += (l2->l_ncsw - l2->l_nivcsw); 3089 ki->p_uru_nivcsw += l2->l_nivcsw; 3090 ruadd(&ru, &l2->l_ru); 3091 } 3092 ki->p_uru_maxrss = ru.ru_maxrss; 3093 ki->p_uru_ixrss = ru.ru_ixrss; 3094 ki->p_uru_idrss = ru.ru_idrss; 3095 ki->p_uru_isrss = ru.ru_isrss; 3096 ki->p_uru_minflt = ru.ru_minflt; 3097 ki->p_uru_majflt = ru.ru_majflt; 3098 ki->p_uru_nswap = ru.ru_nswap; 3099 ki->p_uru_inblock = ru.ru_inblock; 3100 ki->p_uru_oublock = ru.ru_oublock; 3101 ki->p_uru_msgsnd = ru.ru_msgsnd; 3102 ki->p_uru_msgrcv = ru.ru_msgrcv; 3103 ki->p_uru_nsignals = ru.ru_nsignals; 3104 3105 timeradd(&p->p_stats->p_cru.ru_utime, 3106 &p->p_stats->p_cru.ru_stime, &ut); 3107 ki->p_uctime_sec = ut.tv_sec; 3108 ki->p_uctime_usec = ut.tv_usec; 3109 } 3110 } 3111 3112 /* 3113 * Fill in a kinfo_lwp structure for the specified lwp. 3114 */ 3115 static void 3116 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 3117 { 3118 struct proc *p = l->l_proc; 3119 struct timeval tv; 3120 3121 KASSERT(lwp_locked(l, NULL)); 3122 3123 kl->l_forw = 0; 3124 kl->l_back = 0; 3125 kl->l_laddr = PTRTOUINT64(l); 3126 kl->l_addr = PTRTOUINT64(l->l_addr); 3127 kl->l_stat = l->l_stat; 3128 kl->l_lid = l->l_lid; 3129 kl->l_flag = sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 3130 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3131 3132 kl->l_swtime = l->l_swtime; 3133 kl->l_slptime = l->l_slptime; 3134 if (l->l_stat == LSONPROC) 3135 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3136 else 3137 kl->l_schedflags = 0; 3138 kl->l_holdcnt = l->l_holdcnt; 3139 kl->l_priority = lwp_eprio(l); 3140 kl->l_usrpri = l->l_priority; 3141 if (l->l_wchan) 3142 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 3143 kl->l_wchan = PTRTOUINT64(l->l_wchan); 3144 kl->l_cpuid = cpu_index(l->l_cpu); 3145 bintime2timeval(&l->l_rtime, &tv); 3146 kl->l_rtime_sec = tv.tv_sec; 3147 kl->l_rtime_usec = tv.tv_usec; 3148 kl->l_cpticks = l->l_cpticks; 3149 kl->l_pctcpu = l->l_pctcpu; 3150 kl->l_pid = p->p_pid; 3151 if (l->l_name == NULL) 3152 kl->l_name[0] = '\0'; 3153 else 3154 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 3155 } 3156 3157 /* 3158 * Fill in an eproc structure for the specified process. 3159 */ 3160 void 3161 fill_eproc(struct proc *p, struct eproc *ep, bool zombie) 3162 { 3163 struct tty *tp; 3164 struct lwp *l; 3165 3166 KASSERT(mutex_owned(proc_lock)); 3167 KASSERT(mutex_owned(p->p_lock)); 3168 3169 memset(ep, 0, sizeof(*ep)); 3170 3171 ep->e_paddr = p; 3172 ep->e_sess = p->p_session; 3173 if (p->p_cred) { 3174 kauth_cred_topcred(p->p_cred, &ep->e_pcred); 3175 kauth_cred_toucred(p->p_cred, &ep->e_ucred); 3176 } 3177 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3178 struct vmspace *vm = p->p_vmspace; 3179 3180 ep->e_vm.vm_rssize = vm_resident_count(vm); 3181 ep->e_vm.vm_tsize = vm->vm_tsize; 3182 ep->e_vm.vm_dsize = vm->vm_dsize; 3183 ep->e_vm.vm_ssize = vm->vm_ssize; 3184 3185 /* Pick the primary (first) LWP */ 3186 l = proc_active_lwp(p); 3187 KASSERT(l != NULL); 3188 lwp_lock(l); 3189 if (l->l_wchan) 3190 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 3191 lwp_unlock(l); 3192 } 3193 if (p->p_pptr) 3194 ep->e_ppid = p->p_pptr->p_pid; 3195 if (p->p_pgrp && p->p_session) { 3196 ep->e_pgid = p->p_pgrp->pg_id; 3197 ep->e_jobc = p->p_pgrp->pg_jobc; 3198 ep->e_sid = p->p_session->s_sid; 3199 if ((p->p_lflag & PL_CONTROLT) && 3200 (tp = ep->e_sess->s_ttyp)) { 3201 ep->e_tdev = tp->t_dev; 3202 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3203 ep->e_tsess = tp->t_session; 3204 } else 3205 ep->e_tdev = NODEV; 3206 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 3207 if (SESS_LEADER(p)) 3208 ep->e_flag |= EPROC_SLEADER; 3209 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 3210 } 3211 ep->e_xsize = ep->e_xrssize = 0; 3212 ep->e_xccount = ep->e_xswrss = 0; 3213 } 3214 3215 u_int 3216 sysctl_map_flags(const u_int *map, u_int word) 3217 { 3218 u_int rv; 3219 3220 for (rv = 0; *map != 0; map += 2) 3221 if ((word & map[0]) != 0) 3222 rv |= map[1]; 3223 3224 return rv; 3225 } 3226
Indexes created Wed Oct 01 15:09:59 GMT 2025