init_sysctl.c revision 1.175
1 /* $NetBSD: init_sysctl.c,v 1.175 2010/07/01 02:38:30 rmind Exp $ */ 2 3 /*- 4 * Copyright (c) 2003, 2007, 2008, 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Brown, and by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: init_sysctl.c,v 1.175 2010/07/01 02:38:30 rmind Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_compat_netbsd32.h" 37 #include "opt_compat_netbsd.h" 38 #include "opt_modular.h" 39 #include "opt_sa.h" 40 #include "opt_posix.h" 41 #include "pty.h" 42 #include "rnd.h" 43 44 #include <sys/types.h> 45 #include <sys/param.h> 46 #include <sys/sysctl.h> 47 #include <sys/cpu.h> 48 #include <sys/errno.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/unistd.h> 52 #include <sys/disklabel.h> 53 #include <sys/rnd.h> 54 #include <sys/vnode.h> 55 #include <sys/mount.h> 56 #include <sys/namei.h> 57 #include <sys/msgbuf.h> 58 #include <dev/cons.h> 59 #include <sys/socketvar.h> 60 #include <sys/file.h> 61 #include <sys/filedesc.h> 62 #include <sys/tty.h> 63 #include <sys/kmem.h> 64 #include <sys/resource.h> 65 #include <sys/resourcevar.h> 66 #include <sys/exec.h> 67 #include <sys/conf.h> 68 #include <sys/device.h> 69 #include <sys/stat.h> 70 #include <sys/kauth.h> 71 #include <sys/ktrace.h> 72 #include <sys/ksem.h> 73 74 #ifdef COMPAT_NETBSD32 75 #include <compat/netbsd32/netbsd32.h> 76 #endif 77 #ifdef COMPAT_50 78 #include <compat/sys/time.h> 79 #endif 80 81 #ifdef KERN_SA 82 #include <sys/sa.h> 83 #endif 84 85 #include <sys/cpu.h> 86 87 #if defined(MODULAR) || defined(P1003_1B_SEMAPHORE) 88 int posix_semaphores = 200112; 89 #else 90 int posix_semaphores; 91 #endif 92 93 int security_setidcore_dump; 94 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 95 uid_t security_setidcore_owner = 0; 96 gid_t security_setidcore_group = 0; 97 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 98 99 /* Initialized in sysctl_init() for now... */ 100 extern kmutex_t sysctl_file_marker_lock; 101 static u_int sysctl_file_marker = 1; 102 103 static const u_int sysctl_flagmap[] = { 104 PK_ADVLOCK, P_ADVLOCK, 105 PK_EXEC, P_EXEC, 106 PK_NOCLDWAIT, P_NOCLDWAIT, 107 PK_32, P_32, 108 PK_CLDSIGIGN, P_CLDSIGIGN, 109 PK_SUGID, P_SUGID, 110 0 111 }; 112 113 static const u_int sysctl_sflagmap[] = { 114 PS_NOCLDSTOP, P_NOCLDSTOP, 115 PS_WEXIT, P_WEXIT, 116 PS_STOPFORK, P_STOPFORK, 117 PS_STOPEXEC, P_STOPEXEC, 118 PS_STOPEXIT, P_STOPEXIT, 119 0 120 }; 121 122 static const u_int sysctl_slflagmap[] = { 123 PSL_TRACED, P_TRACED, 124 PSL_FSTRACE, P_FSTRACE, 125 PSL_CHTRACED, P_CHTRACED, 126 PSL_SYSCALL, P_SYSCALL, 127 0 128 }; 129 130 static const u_int sysctl_lflagmap[] = { 131 PL_CONTROLT, P_CONTROLT, 132 PL_PPWAIT, P_PPWAIT, 133 0 134 }; 135 136 static const u_int sysctl_stflagmap[] = { 137 PST_PROFIL, P_PROFIL, 138 0 139 140 }; 141 142 static const u_int sysctl_lwpflagmap[] = { 143 LW_SINTR, P_SINTR, 144 LW_SYSTEM, P_SYSTEM, 145 LW_SA, P_SA, /* WRS ??? */ 146 0 147 }; 148 149 static const u_int sysctl_lwpprflagmap[] = { 150 LPR_DETACHED, L_DETACHED, 151 0 152 }; 153 154 /* 155 * try over estimating by 5 procs/lwps 156 */ 157 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 158 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 159 160 static int dcopyout(struct lwp *, const void *, void *, size_t); 161 162 static int 163 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 164 { 165 int error; 166 167 error = copyout(kaddr, uaddr, len); 168 ktrmibio(-1, UIO_READ, uaddr, len, error); 169 170 return error; 171 } 172 173 #ifdef DIAGNOSTIC 174 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 175 #endif 176 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 177 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 178 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 179 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 180 static int sysctl_setlen(SYSCTLFN_PROTO); 181 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 182 static int sysctl_kern_file(SYSCTLFN_PROTO); 183 static int sysctl_msgbuf(SYSCTLFN_PROTO); 184 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 185 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 186 #if NPTY > 0 187 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 188 #endif /* NPTY > 0 */ 189 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 190 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 191 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 192 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 193 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 194 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 195 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 196 static int sysctl_kern_file2(SYSCTLFN_PROTO); 197 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 198 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 199 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 200 static int sysctl_doeproc(SYSCTLFN_PROTO); 201 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 202 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 203 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 204 205 static u_int sysctl_map_flags(const u_int *, u_int); 206 static void fill_kproc2(struct proc *, struct kinfo_proc2 *, bool); 207 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 208 static void fill_file(struct kinfo_file *, const file_t *, const fdfile_t *, 209 int, pid_t); 210 211 /* 212 * ******************************************************************** 213 * section 1: setup routines 214 * ******************************************************************** 215 * These functions are stuffed into a link set for sysctl setup 216 * functions. They're never called or referenced from anywhere else. 217 * ******************************************************************** 218 */ 219 220 /* 221 * this setup routine is a replacement for kern_sysctl() 222 */ 223 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 224 { 225 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 226 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 227 extern int dumponpanic; /* defined in kern/subr_prf.c */ 228 const struct sysctlnode *rnode; 229 230 sysctl_createv(clog, 0, NULL, NULL, 231 CTLFLAG_PERMANENT, 232 CTLTYPE_NODE, "kern", NULL, 233 NULL, 0, NULL, 0, 234 CTL_KERN, CTL_EOL); 235 236 sysctl_createv(clog, 0, NULL, NULL, 237 CTLFLAG_PERMANENT, 238 CTLTYPE_STRING, "ostype", 239 SYSCTL_DESCR("Operating system type"), 240 NULL, 0, &ostype, 0, 241 CTL_KERN, KERN_OSTYPE, CTL_EOL); 242 sysctl_createv(clog, 0, NULL, NULL, 243 CTLFLAG_PERMANENT, 244 CTLTYPE_STRING, "osrelease", 245 SYSCTL_DESCR("Operating system release"), 246 NULL, 0, &osrelease, 0, 247 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 248 sysctl_createv(clog, 0, NULL, NULL, 249 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 250 CTLTYPE_INT, "osrevision", 251 SYSCTL_DESCR("Operating system revision"), 252 NULL, __NetBSD_Version__, NULL, 0, 253 CTL_KERN, KERN_OSREV, CTL_EOL); 254 sysctl_createv(clog, 0, NULL, NULL, 255 CTLFLAG_PERMANENT, 256 CTLTYPE_STRING, "version", 257 SYSCTL_DESCR("Kernel version"), 258 NULL, 0, &version, 0, 259 CTL_KERN, KERN_VERSION, CTL_EOL); 260 sysctl_createv(clog, 0, NULL, NULL, 261 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 262 CTLTYPE_INT, "maxvnodes", 263 SYSCTL_DESCR("Maximum number of vnodes"), 264 sysctl_kern_maxvnodes, 0, NULL, 0, 265 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 266 sysctl_createv(clog, 0, NULL, NULL, 267 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 268 CTLTYPE_INT, "maxproc", 269 SYSCTL_DESCR("Maximum number of simultaneous processes"), 270 sysctl_kern_maxproc, 0, NULL, 0, 271 CTL_KERN, KERN_MAXPROC, CTL_EOL); 272 sysctl_createv(clog, 0, NULL, NULL, 273 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 274 CTLTYPE_INT, "maxfiles", 275 SYSCTL_DESCR("Maximum number of open files"), 276 NULL, 0, &maxfiles, 0, 277 CTL_KERN, KERN_MAXFILES, CTL_EOL); 278 sysctl_createv(clog, 0, NULL, NULL, 279 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 280 CTLTYPE_INT, "argmax", 281 SYSCTL_DESCR("Maximum number of bytes of arguments to " 282 "execve(2)"), 283 NULL, ARG_MAX, NULL, 0, 284 CTL_KERN, KERN_ARGMAX, CTL_EOL); 285 sysctl_createv(clog, 0, NULL, NULL, 286 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 287 CTLTYPE_STRING, "hostname", 288 SYSCTL_DESCR("System hostname"), 289 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 290 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 291 sysctl_createv(clog, 0, NULL, NULL, 292 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 293 CTLTYPE_INT, "hostid", 294 SYSCTL_DESCR("System host ID number"), 295 sysctl_kern_hostid, 0, NULL, 0, 296 CTL_KERN, KERN_HOSTID, CTL_EOL); 297 sysctl_createv(clog, 0, NULL, NULL, 298 CTLFLAG_PERMANENT, 299 CTLTYPE_STRUCT, "clockrate", 300 SYSCTL_DESCR("Kernel clock rates"), 301 sysctl_kern_clockrate, 0, NULL, 302 sizeof(struct clockinfo), 303 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 304 sysctl_createv(clog, 0, NULL, NULL, 305 CTLFLAG_PERMANENT, 306 CTLTYPE_INT, "hardclock_ticks", 307 SYSCTL_DESCR("Number of hardclock ticks"), 308 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 309 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 310 sysctl_createv(clog, 0, NULL, NULL, 311 CTLFLAG_PERMANENT, 312 CTLTYPE_STRUCT, "vnode", 313 SYSCTL_DESCR("System vnode table"), 314 sysctl_kern_vnode, 0, NULL, 0, 315 CTL_KERN, KERN_VNODE, CTL_EOL); 316 sysctl_createv(clog, 0, NULL, NULL, 317 CTLFLAG_PERMANENT, 318 CTLTYPE_STRUCT, "file", 319 SYSCTL_DESCR("System open file table"), 320 sysctl_kern_file, 0, NULL, 0, 321 CTL_KERN, KERN_FILE, CTL_EOL); 322 #ifndef GPROF 323 sysctl_createv(clog, 0, NULL, NULL, 324 CTLFLAG_PERMANENT, 325 CTLTYPE_NODE, "profiling", 326 SYSCTL_DESCR("Profiling information (not available)"), 327 sysctl_notavail, 0, NULL, 0, 328 CTL_KERN, KERN_PROF, CTL_EOL); 329 #endif 330 sysctl_createv(clog, 0, NULL, NULL, 331 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 332 CTLTYPE_INT, "posix1version", 333 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 334 "with which the operating system attempts " 335 "to comply"), 336 NULL, _POSIX_VERSION, NULL, 0, 337 CTL_KERN, KERN_POSIX1, CTL_EOL); 338 sysctl_createv(clog, 0, NULL, NULL, 339 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 340 CTLTYPE_INT, "ngroups", 341 SYSCTL_DESCR("Maximum number of supplemental groups"), 342 NULL, NGROUPS_MAX, NULL, 0, 343 CTL_KERN, KERN_NGROUPS, CTL_EOL); 344 sysctl_createv(clog, 0, NULL, NULL, 345 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 346 CTLTYPE_INT, "job_control", 347 SYSCTL_DESCR("Whether job control is available"), 348 NULL, 1, NULL, 0, 349 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 350 sysctl_createv(clog, 0, NULL, NULL, 351 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 352 CTLTYPE_INT, "saved_ids", 353 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 354 "available"), NULL, 355 #ifdef _POSIX_SAVED_IDS 356 1, 357 #else /* _POSIX_SAVED_IDS */ 358 0, 359 #endif /* _POSIX_SAVED_IDS */ 360 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 361 sysctl_createv(clog, 0, NULL, NULL, 362 CTLFLAG_PERMANENT|CTLFLAG_HEX, 363 CTLTYPE_INT, "boothowto", 364 SYSCTL_DESCR("Flags from boot loader"), 365 NULL, 0, &boothowto, sizeof(boothowto), 366 CTL_KERN, CTL_CREATE, CTL_EOL); 367 sysctl_createv(clog, 0, NULL, NULL, 368 CTLFLAG_PERMANENT, 369 CTLTYPE_STRUCT, "boottime", 370 SYSCTL_DESCR("System boot time"), 371 NULL, 0, &boottime, sizeof(boottime), 372 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 373 #ifdef COMPAT_50 374 { 375 extern struct timeval50 boottime50; 376 sysctl_createv(clog, 0, NULL, NULL, 377 CTLFLAG_PERMANENT, 378 CTLTYPE_STRUCT, "oboottime", 379 SYSCTL_DESCR("System boot time"), 380 NULL, 0, &boottime50, sizeof(boottime50), 381 CTL_KERN, KERN_OBOOTTIME, CTL_EOL); 382 } 383 #endif 384 sysctl_createv(clog, 0, NULL, NULL, 385 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 386 CTLTYPE_STRING, "domainname", 387 SYSCTL_DESCR("YP domain name"), 388 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 389 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 390 sysctl_createv(clog, 0, NULL, NULL, 391 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 392 CTLTYPE_INT, "maxpartitions", 393 SYSCTL_DESCR("Maximum number of partitions allowed per " 394 "disk"), 395 NULL, MAXPARTITIONS, NULL, 0, 396 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 397 sysctl_createv(clog, 0, NULL, NULL, 398 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 399 CTLTYPE_INT, "rawpartition", 400 SYSCTL_DESCR("Raw partition of a disk"), 401 NULL, RAW_PART, NULL, 0, 402 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 403 sysctl_createv(clog, 0, NULL, NULL, 404 CTLFLAG_PERMANENT, 405 CTLTYPE_STRUCT, "timex", NULL, 406 sysctl_notavail, 0, NULL, 0, 407 CTL_KERN, KERN_TIMEX, CTL_EOL); 408 sysctl_createv(clog, 0, NULL, NULL, 409 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 410 CTLTYPE_INT, "rtc_offset", 411 SYSCTL_DESCR("Offset of real time clock from UTC in " 412 "minutes"), 413 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 414 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 415 sysctl_createv(clog, 0, NULL, NULL, 416 CTLFLAG_PERMANENT, 417 CTLTYPE_STRING, "root_device", 418 SYSCTL_DESCR("Name of the root device"), 419 sysctl_root_device, 0, NULL, 0, 420 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 421 sysctl_createv(clog, 0, NULL, NULL, 422 CTLFLAG_PERMANENT, 423 CTLTYPE_INT, "msgbufsize", 424 SYSCTL_DESCR("Size of the kernel message buffer"), 425 sysctl_msgbuf, 0, NULL, 0, 426 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 427 sysctl_createv(clog, 0, NULL, NULL, 428 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 429 CTLTYPE_INT, "fsync", 430 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 431 "Synchronization Option is available on " 432 "this system"), 433 NULL, 1, NULL, 0, 434 CTL_KERN, KERN_FSYNC, CTL_EOL); 435 sysctl_createv(clog, 0, NULL, NULL, 436 CTLFLAG_PERMANENT, 437 CTLTYPE_NODE, "ipc", 438 SYSCTL_DESCR("SysV IPC options"), 439 NULL, 0, NULL, 0, 440 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 441 sysctl_createv(clog, 0, NULL, NULL, 442 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 443 CTLTYPE_INT, "sysvmsg", 444 SYSCTL_DESCR("System V style message support available"), 445 NULL, 446 #ifdef SYSVMSG 447 1, 448 #else /* SYSVMSG */ 449 0, 450 #endif /* SYSVMSG */ 451 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 452 sysctl_createv(clog, 0, NULL, NULL, 453 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 454 CTLTYPE_INT, "sysvsem", 455 SYSCTL_DESCR("System V style semaphore support " 456 "available"), NULL, 457 #ifdef SYSVSEM 458 1, 459 #else /* SYSVSEM */ 460 0, 461 #endif /* SYSVSEM */ 462 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 463 sysctl_createv(clog, 0, NULL, NULL, 464 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 465 CTLTYPE_INT, "sysvshm", 466 SYSCTL_DESCR("System V style shared memory support " 467 "available"), NULL, 468 #ifdef SYSVSHM 469 1, 470 #else /* SYSVSHM */ 471 0, 472 #endif /* SYSVSHM */ 473 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 474 sysctl_createv(clog, 0, NULL, NULL, 475 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 476 CTLTYPE_INT, "synchronized_io", 477 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 478 "I/O Option is available on this system"), 479 NULL, 1, NULL, 0, 480 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 481 sysctl_createv(clog, 0, NULL, NULL, 482 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 483 CTLTYPE_INT, "iov_max", 484 SYSCTL_DESCR("Maximum number of iovec structures per " 485 "process"), 486 NULL, IOV_MAX, NULL, 0, 487 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 488 sysctl_createv(clog, 0, NULL, NULL, 489 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 490 CTLTYPE_INT, "mapped_files", 491 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 492 "Files Option is available on this system"), 493 NULL, 1, NULL, 0, 494 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 495 sysctl_createv(clog, 0, NULL, NULL, 496 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 497 CTLTYPE_INT, "memlock", 498 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 499 "Locking Option is available on this " 500 "system"), 501 NULL, 1, NULL, 0, 502 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 503 sysctl_createv(clog, 0, NULL, NULL, 504 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 505 CTLTYPE_INT, "memlock_range", 506 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 507 "Locking Option is available on this " 508 "system"), 509 NULL, 1, NULL, 0, 510 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 511 sysctl_createv(clog, 0, NULL, NULL, 512 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 513 CTLTYPE_INT, "memory_protection", 514 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 515 "Protection Option is available on this " 516 "system"), 517 NULL, 1, NULL, 0, 518 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 519 sysctl_createv(clog, 0, NULL, NULL, 520 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 521 CTLTYPE_INT, "login_name_max", 522 SYSCTL_DESCR("Maximum login name length"), 523 NULL, LOGIN_NAME_MAX, NULL, 0, 524 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 525 sysctl_createv(clog, 0, NULL, NULL, 526 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 527 CTLTYPE_STRING, "defcorename", 528 SYSCTL_DESCR("Default core file name"), 529 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 530 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 531 sysctl_createv(clog, 0, NULL, NULL, 532 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 533 CTLTYPE_INT, "logsigexit", 534 SYSCTL_DESCR("Log process exit when caused by signals"), 535 NULL, 0, &kern_logsigexit, 0, 536 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 537 sysctl_createv(clog, 0, NULL, NULL, 538 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 539 CTLTYPE_INT, "fscale", 540 SYSCTL_DESCR("Kernel fixed-point scale factor"), 541 NULL, FSCALE, NULL, 0, 542 CTL_KERN, KERN_FSCALE, CTL_EOL); 543 sysctl_createv(clog, 0, NULL, NULL, 544 CTLFLAG_PERMANENT, 545 CTLTYPE_INT, "ccpu", 546 SYSCTL_DESCR("Scheduler exponential decay value"), 547 NULL, 0, &ccpu, 0, 548 CTL_KERN, KERN_CCPU, CTL_EOL); 549 sysctl_createv(clog, 0, NULL, NULL, 550 CTLFLAG_PERMANENT, 551 CTLTYPE_STRUCT, "cp_time", 552 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 553 sysctl_kern_cptime, 0, NULL, 0, 554 CTL_KERN, KERN_CP_TIME, CTL_EOL); 555 sysctl_createv(clog, 0, NULL, NULL, 556 CTLFLAG_PERMANENT, 557 CTLTYPE_INT, "msgbuf", 558 SYSCTL_DESCR("Kernel message buffer"), 559 sysctl_msgbuf, 0, NULL, 0, 560 CTL_KERN, KERN_MSGBUF, CTL_EOL); 561 sysctl_createv(clog, 0, NULL, NULL, 562 CTLFLAG_PERMANENT, 563 CTLTYPE_STRUCT, "consdev", 564 SYSCTL_DESCR("Console device"), 565 sysctl_consdev, 0, NULL, sizeof(dev_t), 566 CTL_KERN, KERN_CONSDEV, CTL_EOL); 567 #if NPTY > 0 568 sysctl_createv(clog, 0, NULL, NULL, 569 CTLFLAG_PERMANENT, 570 CTLTYPE_INT, "maxptys", 571 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 572 sysctl_kern_maxptys, 0, NULL, 0, 573 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 574 #endif /* NPTY > 0 */ 575 sysctl_createv(clog, 0, NULL, NULL, 576 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 577 CTLTYPE_INT, "maxphys", 578 SYSCTL_DESCR("Maximum raw I/O transfer size"), 579 NULL, MAXPHYS, NULL, 0, 580 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 581 sysctl_createv(clog, 0, NULL, NULL, 582 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 583 CTLTYPE_INT, "sbmax", 584 SYSCTL_DESCR("Maximum socket buffer size"), 585 sysctl_kern_sbmax, 0, NULL, 0, 586 CTL_KERN, KERN_SBMAX, CTL_EOL); 587 sysctl_createv(clog, 0, NULL, NULL, 588 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 589 CTLTYPE_INT, "monotonic_clock", 590 SYSCTL_DESCR("Implementation version of the POSIX " 591 "1003.1b Monotonic Clock Option"), 592 /* XXX _POSIX_VERSION */ 593 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 594 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 595 sysctl_createv(clog, 0, NULL, NULL, 596 CTLFLAG_PERMANENT, 597 CTLTYPE_INT, "urandom", 598 SYSCTL_DESCR("Random integer value"), 599 sysctl_kern_urnd, 0, NULL, 0, 600 CTL_KERN, KERN_URND, CTL_EOL); 601 sysctl_createv(clog, 0, NULL, NULL, 602 CTLFLAG_PERMANENT, 603 CTLTYPE_INT, "arandom", 604 SYSCTL_DESCR("n bytes of random data"), 605 sysctl_kern_arnd, 0, NULL, 0, 606 CTL_KERN, KERN_ARND, CTL_EOL); 607 sysctl_createv(clog, 0, NULL, NULL, 608 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 609 CTLTYPE_INT, "labelsector", 610 SYSCTL_DESCR("Sector number containing the disklabel"), 611 NULL, LABELSECTOR, NULL, 0, 612 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 613 sysctl_createv(clog, 0, NULL, NULL, 614 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 615 CTLTYPE_INT, "labeloffset", 616 SYSCTL_DESCR("Offset of the disklabel within the " 617 "sector"), 618 NULL, LABELOFFSET, NULL, 0, 619 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 620 sysctl_createv(clog, 0, NULL, NULL, 621 CTLFLAG_PERMANENT, 622 CTLTYPE_NODE, "lwp", 623 SYSCTL_DESCR("System-wide LWP information"), 624 sysctl_kern_lwp, 0, NULL, 0, 625 CTL_KERN, KERN_LWP, CTL_EOL); 626 sysctl_createv(clog, 0, NULL, NULL, 627 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 628 CTLTYPE_INT, "forkfsleep", 629 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 630 "to process limits"), 631 sysctl_kern_forkfsleep, 0, NULL, 0, 632 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 633 sysctl_createv(clog, 0, NULL, NULL, 634 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 635 CTLTYPE_INT, "posix_threads", 636 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 637 "Threads option to which the system " 638 "attempts to conform"), 639 /* XXX _POSIX_VERSION */ 640 NULL, _POSIX_THREADS, NULL, 0, 641 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 642 sysctl_createv(clog, 0, NULL, NULL, 643 CTLFLAG_PERMANENT, 644 CTLTYPE_INT, "posix_semaphores", 645 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 646 "Semaphores option to which the system " 647 "attempts to conform"), NULL, 648 0, &posix_semaphores, 649 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 650 sysctl_createv(clog, 0, NULL, NULL, 651 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 652 CTLTYPE_INT, "posix_barriers", 653 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 654 "Barriers option to which the system " 655 "attempts to conform"), 656 /* XXX _POSIX_VERSION */ 657 NULL, _POSIX_BARRIERS, NULL, 0, 658 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 659 sysctl_createv(clog, 0, NULL, NULL, 660 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 661 CTLTYPE_INT, "posix_timers", 662 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 663 "Timers option to which the system " 664 "attempts to conform"), 665 /* XXX _POSIX_VERSION */ 666 NULL, _POSIX_TIMERS, NULL, 0, 667 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 668 sysctl_createv(clog, 0, NULL, NULL, 669 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 670 CTLTYPE_INT, "posix_spin_locks", 671 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 672 "Locks option to which the system attempts " 673 "to conform"), 674 /* XXX _POSIX_VERSION */ 675 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 676 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 677 sysctl_createv(clog, 0, NULL, NULL, 678 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 679 CTLTYPE_INT, "posix_reader_writer_locks", 680 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 681 "Read-Write Locks option to which the " 682 "system attempts to conform"), 683 /* XXX _POSIX_VERSION */ 684 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 685 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 686 sysctl_createv(clog, 0, NULL, NULL, 687 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 688 CTLTYPE_INT, "dump_on_panic", 689 SYSCTL_DESCR("Perform a crash dump on system panic"), 690 NULL, 0, &dumponpanic, 0, 691 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 692 #ifdef DIAGNOSTIC 693 sysctl_createv(clog, 0, NULL, NULL, 694 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 695 CTLTYPE_INT, "panic_now", 696 SYSCTL_DESCR("Trigger a panic"), 697 sysctl_kern_trigger_panic, 0, NULL, 0, 698 CTL_KERN, CTL_CREATE, CTL_EOL); 699 #endif 700 sysctl_createv(clog, 0, NULL, NULL, 701 CTLFLAG_PERMANENT, 702 CTLTYPE_INT, "root_partition", 703 SYSCTL_DESCR("Root partition on the root device"), 704 sysctl_kern_root_partition, 0, NULL, 0, 705 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 706 sysctl_createv(clog, 0, NULL, NULL, 707 CTLFLAG_PERMANENT, 708 CTLTYPE_STRUCT, "drivers", 709 SYSCTL_DESCR("List of all drivers with block and " 710 "character device numbers"), 711 sysctl_kern_drivers, 0, NULL, 0, 712 CTL_KERN, KERN_DRIVERS, CTL_EOL); 713 sysctl_createv(clog, 0, NULL, NULL, 714 CTLFLAG_PERMANENT, 715 CTLTYPE_STRUCT, "file2", 716 SYSCTL_DESCR("System open file table"), 717 sysctl_kern_file2, 0, NULL, 0, 718 CTL_KERN, KERN_FILE2, CTL_EOL); 719 sysctl_createv(clog, 0, NULL, NULL, 720 CTLFLAG_PERMANENT, 721 CTLTYPE_STRUCT, "cp_id", 722 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 723 sysctl_kern_cpid, 0, NULL, 0, 724 CTL_KERN, KERN_CP_ID, CTL_EOL); 725 sysctl_createv(clog, 0, NULL, &rnode, 726 CTLFLAG_PERMANENT, 727 CTLTYPE_NODE, "coredump", 728 SYSCTL_DESCR("Coredump settings."), 729 NULL, 0, NULL, 0, 730 CTL_KERN, CTL_CREATE, CTL_EOL); 731 sysctl_createv(clog, 0, &rnode, &rnode, 732 CTLFLAG_PERMANENT, 733 CTLTYPE_NODE, "setid", 734 SYSCTL_DESCR("Set-id processes' coredump settings."), 735 NULL, 0, NULL, 0, 736 CTL_CREATE, CTL_EOL); 737 sysctl_createv(clog, 0, &rnode, NULL, 738 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 739 CTLTYPE_INT, "dump", 740 SYSCTL_DESCR("Allow set-id processes to dump core."), 741 sysctl_security_setidcore, 0, &security_setidcore_dump, 742 sizeof(security_setidcore_dump), 743 CTL_CREATE, CTL_EOL); 744 sysctl_createv(clog, 0, &rnode, NULL, 745 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 746 CTLTYPE_STRING, "path", 747 SYSCTL_DESCR("Path pattern for set-id coredumps."), 748 sysctl_security_setidcorename, 0, 749 &security_setidcore_path, 750 sizeof(security_setidcore_path), 751 CTL_CREATE, CTL_EOL); 752 sysctl_createv(clog, 0, &rnode, NULL, 753 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 754 CTLTYPE_INT, "owner", 755 SYSCTL_DESCR("Owner id for set-id processes' cores."), 756 sysctl_security_setidcore, 0, &security_setidcore_owner, 757 0, 758 CTL_CREATE, CTL_EOL); 759 sysctl_createv(clog, 0, &rnode, NULL, 760 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 761 CTLTYPE_INT, "group", 762 SYSCTL_DESCR("Group id for set-id processes' cores."), 763 sysctl_security_setidcore, 0, &security_setidcore_group, 764 0, 765 CTL_CREATE, CTL_EOL); 766 sysctl_createv(clog, 0, &rnode, NULL, 767 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 768 CTLTYPE_INT, "mode", 769 SYSCTL_DESCR("Mode for set-id processes' cores."), 770 sysctl_security_setidcore, 0, &security_setidcore_mode, 771 0, 772 CTL_CREATE, CTL_EOL); 773 #ifdef KERN_SA 774 sysctl_createv(clog, 0, NULL, NULL, 775 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 776 CTLTYPE_INT, "no_sa_support", 777 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 778 NULL, 0, &sa_system_disabled, 0, 779 CTL_KERN, CTL_CREATE, CTL_EOL); 780 #else 781 sysctl_createv(clog, 0, NULL, NULL, 782 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 783 CTLTYPE_INT, "no_sa_support", 784 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 785 NULL, 1, NULL, 0, 786 CTL_KERN, CTL_CREATE, CTL_EOL); 787 #endif 788 789 /* kern.posix. */ 790 sysctl_createv(clog, 0, NULL, &rnode, 791 CTLFLAG_PERMANENT, 792 CTLTYPE_NODE, "posix", 793 SYSCTL_DESCR("POSIX options"), 794 NULL, 0, NULL, 0, 795 CTL_KERN, CTL_CREATE, CTL_EOL); 796 sysctl_createv(clog, 0, &rnode, NULL, 797 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 798 CTLTYPE_INT, "semmax", 799 SYSCTL_DESCR("Maximal number of semaphores"), 800 NULL, 0, &ksem_max, 0, 801 CTL_CREATE, CTL_EOL); 802 } 803 804 SYSCTL_SETUP(sysctl_kern_proc_setup, 805 "sysctl kern.proc/proc2/proc_args subtree setup") 806 { 807 808 sysctl_createv(clog, 0, NULL, NULL, 809 CTLFLAG_PERMANENT, 810 CTLTYPE_NODE, "kern", NULL, 811 NULL, 0, NULL, 0, 812 CTL_KERN, CTL_EOL); 813 814 sysctl_createv(clog, 0, NULL, NULL, 815 CTLFLAG_PERMANENT, 816 CTLTYPE_NODE, "proc", 817 SYSCTL_DESCR("System-wide process information"), 818 sysctl_doeproc, 0, NULL, 0, 819 CTL_KERN, KERN_PROC, CTL_EOL); 820 sysctl_createv(clog, 0, NULL, NULL, 821 CTLFLAG_PERMANENT, 822 CTLTYPE_NODE, "proc2", 823 SYSCTL_DESCR("Machine-independent process information"), 824 sysctl_doeproc, 0, NULL, 0, 825 CTL_KERN, KERN_PROC2, CTL_EOL); 826 sysctl_createv(clog, 0, NULL, NULL, 827 CTLFLAG_PERMANENT, 828 CTLTYPE_NODE, "proc_args", 829 SYSCTL_DESCR("Process argument information"), 830 sysctl_kern_proc_args, 0, NULL, 0, 831 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 832 833 /* 834 "nodes" under these: 835 836 KERN_PROC_ALL 837 KERN_PROC_PID pid 838 KERN_PROC_PGRP pgrp 839 KERN_PROC_SESSION sess 840 KERN_PROC_TTY tty 841 KERN_PROC_UID uid 842 KERN_PROC_RUID uid 843 KERN_PROC_GID gid 844 KERN_PROC_RGID gid 845 846 all in all, probably not worth the effort... 847 */ 848 } 849 850 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 851 { 852 u_int u; 853 u_quad_t q; 854 855 sysctl_createv(clog, 0, NULL, NULL, 856 CTLFLAG_PERMANENT, 857 CTLTYPE_NODE, "hw", NULL, 858 NULL, 0, NULL, 0, 859 CTL_HW, CTL_EOL); 860 861 sysctl_createv(clog, 0, NULL, NULL, 862 CTLFLAG_PERMANENT, 863 CTLTYPE_STRING, "machine", 864 SYSCTL_DESCR("Machine class"), 865 NULL, 0, machine, 0, 866 CTL_HW, HW_MACHINE, CTL_EOL); 867 sysctl_createv(clog, 0, NULL, NULL, 868 CTLFLAG_PERMANENT, 869 CTLTYPE_STRING, "model", 870 SYSCTL_DESCR("Machine model"), 871 NULL, 0, cpu_model, 0, 872 CTL_HW, HW_MODEL, CTL_EOL); 873 sysctl_createv(clog, 0, NULL, NULL, 874 CTLFLAG_PERMANENT, 875 CTLTYPE_INT, "ncpu", 876 SYSCTL_DESCR("Number of CPUs configured"), 877 NULL, 0, &ncpu, 0, 878 CTL_HW, HW_NCPU, CTL_EOL); 879 sysctl_createv(clog, 0, NULL, NULL, 880 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 881 CTLTYPE_INT, "byteorder", 882 SYSCTL_DESCR("System byte order"), 883 NULL, BYTE_ORDER, NULL, 0, 884 CTL_HW, HW_BYTEORDER, CTL_EOL); 885 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 886 UINT_MAX : physmem * PAGE_SIZE; 887 sysctl_createv(clog, 0, NULL, NULL, 888 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 889 CTLTYPE_INT, "physmem", 890 SYSCTL_DESCR("Bytes of physical memory"), 891 NULL, u, NULL, 0, 892 CTL_HW, HW_PHYSMEM, CTL_EOL); 893 sysctl_createv(clog, 0, NULL, NULL, 894 CTLFLAG_PERMANENT, 895 CTLTYPE_INT, "usermem", 896 SYSCTL_DESCR("Bytes of non-kernel memory"), 897 sysctl_hw_usermem, 0, NULL, 0, 898 CTL_HW, HW_USERMEM, CTL_EOL); 899 sysctl_createv(clog, 0, NULL, NULL, 900 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 901 CTLTYPE_INT, "pagesize", 902 SYSCTL_DESCR("Software page size"), 903 NULL, PAGE_SIZE, NULL, 0, 904 CTL_HW, HW_PAGESIZE, CTL_EOL); 905 sysctl_createv(clog, 0, NULL, NULL, 906 CTLFLAG_PERMANENT, 907 CTLTYPE_STRING, "machine_arch", 908 SYSCTL_DESCR("Machine CPU class"), 909 NULL, 0, machine_arch, 0, 910 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 911 sysctl_createv(clog, 0, NULL, NULL, 912 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 913 CTLTYPE_INT, "alignbytes", 914 SYSCTL_DESCR("Alignment constraint for all possible " 915 "data types"), 916 NULL, ALIGNBYTES, NULL, 0, 917 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 918 sysctl_createv(clog, 0, NULL, NULL, 919 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 920 CTLTYPE_STRING, "cnmagic", 921 SYSCTL_DESCR("Console magic key sequence"), 922 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 923 CTL_HW, HW_CNMAGIC, CTL_EOL); 924 q = (u_quad_t)physmem * PAGE_SIZE; 925 sysctl_createv(clog, 0, NULL, NULL, 926 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 927 CTLTYPE_QUAD, "physmem64", 928 SYSCTL_DESCR("Bytes of physical memory"), 929 NULL, q, NULL, 0, 930 CTL_HW, HW_PHYSMEM64, CTL_EOL); 931 sysctl_createv(clog, 0, NULL, NULL, 932 CTLFLAG_PERMANENT, 933 CTLTYPE_QUAD, "usermem64", 934 SYSCTL_DESCR("Bytes of non-kernel memory"), 935 sysctl_hw_usermem, 0, NULL, 0, 936 CTL_HW, HW_USERMEM64, CTL_EOL); 937 sysctl_createv(clog, 0, NULL, NULL, 938 CTLFLAG_PERMANENT, 939 CTLTYPE_INT, "ncpuonline", 940 SYSCTL_DESCR("Number of CPUs online"), 941 NULL, 0, &ncpuonline, 0, 942 CTL_HW, HW_NCPUONLINE, CTL_EOL); 943 } 944 945 #ifdef DEBUG 946 /* 947 * Debugging related system variables. 948 */ 949 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 950 struct ctldebug debug5, debug6, debug7, debug8, debug9; 951 struct ctldebug debug10, debug11, debug12, debug13, debug14; 952 struct ctldebug debug15, debug16, debug17, debug18, debug19; 953 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 954 &debug0, &debug1, &debug2, &debug3, &debug4, 955 &debug5, &debug6, &debug7, &debug8, &debug9, 956 &debug10, &debug11, &debug12, &debug13, &debug14, 957 &debug15, &debug16, &debug17, &debug18, &debug19, 958 }; 959 960 /* 961 * this setup routine is a replacement for debug_sysctl() 962 * 963 * note that it creates several nodes per defined debug variable 964 */ 965 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 966 { 967 struct ctldebug *cdp; 968 char nodename[20]; 969 int i; 970 971 /* 972 * two ways here: 973 * 974 * the "old" way (debug.name -> value) which was emulated by 975 * the sysctl(8) binary 976 * 977 * the new way, which the sysctl(8) binary was actually using 978 979 node debug 980 node debug.0 981 string debug.0.name 982 int debug.0.value 983 int debug.name 984 985 */ 986 987 sysctl_createv(clog, 0, NULL, NULL, 988 CTLFLAG_PERMANENT, 989 CTLTYPE_NODE, "debug", NULL, 990 NULL, 0, NULL, 0, 991 CTL_DEBUG, CTL_EOL); 992 993 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 994 cdp = debugvars[i]; 995 if (cdp->debugname == NULL || cdp->debugvar == NULL) 996 continue; 997 998 snprintf(nodename, sizeof(nodename), "debug%d", i); 999 sysctl_createv(clog, 0, NULL, NULL, 1000 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1001 CTLTYPE_NODE, nodename, NULL, 1002 NULL, 0, NULL, 0, 1003 CTL_DEBUG, i, CTL_EOL); 1004 sysctl_createv(clog, 0, NULL, NULL, 1005 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1006 CTLTYPE_STRING, "name", NULL, 1007 /*XXXUNCONST*/ 1008 NULL, 0, __UNCONST(cdp->debugname), 0, 1009 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 1010 sysctl_createv(clog, 0, NULL, NULL, 1011 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1012 CTLTYPE_INT, "value", NULL, 1013 NULL, 0, cdp->debugvar, 0, 1014 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 1015 sysctl_createv(clog, 0, NULL, NULL, 1016 CTLFLAG_PERMANENT, 1017 CTLTYPE_INT, cdp->debugname, NULL, 1018 NULL, 0, cdp->debugvar, 0, 1019 CTL_DEBUG, CTL_CREATE, CTL_EOL); 1020 } 1021 } 1022 #endif /* DEBUG */ 1023 1024 /* 1025 * ******************************************************************** 1026 * section 2: private node-specific helper routines. 1027 * ******************************************************************** 1028 */ 1029 1030 #ifdef DIAGNOSTIC 1031 static int 1032 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 1033 { 1034 int newtrig, error; 1035 struct sysctlnode node; 1036 1037 newtrig = 0; 1038 node = *rnode; 1039 node.sysctl_data = &newtrig; 1040 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1041 if (error || newp == NULL) 1042 return (error); 1043 1044 if (newtrig != 0) 1045 panic("Panic triggered"); 1046 1047 return (error); 1048 } 1049 #endif 1050 1051 /* 1052 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 1053 * new value is lower than desiredvnodes and then calls reinit 1054 * routines that needs to adjust to the new value. 1055 */ 1056 static int 1057 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 1058 { 1059 int error, new_vnodes, old_vnodes, new_max; 1060 struct sysctlnode node; 1061 1062 new_vnodes = desiredvnodes; 1063 node = *rnode; 1064 node.sysctl_data = &new_vnodes; 1065 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1066 if (error || newp == NULL) 1067 return (error); 1068 1069 /* Limits: 75% of KVA and physical memory. */ 1070 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 1071 if (new_vnodes > new_max) 1072 new_vnodes = new_max; 1073 1074 old_vnodes = desiredvnodes; 1075 desiredvnodes = new_vnodes; 1076 if (new_vnodes < old_vnodes) { 1077 error = vfs_drainvnodes(new_vnodes, l); 1078 if (error) { 1079 desiredvnodes = old_vnodes; 1080 return (error); 1081 } 1082 } 1083 vfs_reinit(); 1084 nchreinit(); 1085 1086 return (0); 1087 } 1088 1089 /* 1090 * sysctl helper routine for rtc_offset - set time after changes 1091 */ 1092 static int 1093 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1094 { 1095 struct timespec ts, delta; 1096 int error, new_rtc_offset; 1097 struct sysctlnode node; 1098 1099 new_rtc_offset = rtc_offset; 1100 node = *rnode; 1101 node.sysctl_data = &new_rtc_offset; 1102 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1103 if (error || newp == NULL) 1104 return (error); 1105 1106 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1107 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1108 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1109 return (EPERM); 1110 if (rtc_offset == new_rtc_offset) 1111 return (0); 1112 1113 /* if we change the offset, adjust the time */ 1114 nanotime(&ts); 1115 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1116 delta.tv_nsec = 0; 1117 timespecadd(&ts, &delta, &ts); 1118 rtc_offset = new_rtc_offset; 1119 return (settime(l->l_proc, &ts)); 1120 } 1121 1122 /* 1123 * sysctl helper routine for kern.maxproc. Ensures that the new 1124 * values are not too low or too high. 1125 */ 1126 static int 1127 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1128 { 1129 int error, nmaxproc; 1130 struct sysctlnode node; 1131 1132 nmaxproc = maxproc; 1133 node = *rnode; 1134 node.sysctl_data = &nmaxproc; 1135 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1136 if (error || newp == NULL) 1137 return (error); 1138 1139 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1140 return (EINVAL); 1141 #ifdef __HAVE_CPU_MAXPROC 1142 if (nmaxproc > cpu_maxproc()) 1143 return (EINVAL); 1144 #endif 1145 maxproc = nmaxproc; 1146 1147 return (0); 1148 } 1149 1150 /* 1151 * sysctl helper function for kern.hostid. The hostid is a long, but 1152 * we export it as an int, so we need to give it a little help. 1153 */ 1154 static int 1155 sysctl_kern_hostid(SYSCTLFN_ARGS) 1156 { 1157 int error, inthostid; 1158 struct sysctlnode node; 1159 1160 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1161 node = *rnode; 1162 node.sysctl_data = &inthostid; 1163 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1164 if (error || newp == NULL) 1165 return (error); 1166 1167 hostid = (unsigned)inthostid; 1168 1169 return (0); 1170 } 1171 1172 /* 1173 * sysctl helper function for kern.hostname and kern.domainnname. 1174 * resets the relevant recorded length when the underlying name is 1175 * changed. 1176 */ 1177 static int 1178 sysctl_setlen(SYSCTLFN_ARGS) 1179 { 1180 int error; 1181 1182 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1183 if (error || newp == NULL) 1184 return (error); 1185 1186 switch (rnode->sysctl_num) { 1187 case KERN_HOSTNAME: 1188 hostnamelen = strlen((const char*)rnode->sysctl_data); 1189 break; 1190 case KERN_DOMAINNAME: 1191 domainnamelen = strlen((const char*)rnode->sysctl_data); 1192 break; 1193 } 1194 1195 return (0); 1196 } 1197 1198 /* 1199 * sysctl helper routine for kern.clockrate. Assembles a struct on 1200 * the fly to be returned to the caller. 1201 */ 1202 static int 1203 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1204 { 1205 struct clockinfo clkinfo; 1206 struct sysctlnode node; 1207 1208 clkinfo.tick = tick; 1209 clkinfo.tickadj = tickadj; 1210 clkinfo.hz = hz; 1211 clkinfo.profhz = profhz; 1212 clkinfo.stathz = stathz ? stathz : hz; 1213 1214 node = *rnode; 1215 node.sysctl_data = &clkinfo; 1216 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1217 } 1218 1219 /* 1220 * Expects to be called with proc_lock and sysctl_file_marker_lock locked. 1221 */ 1222 static void 1223 sysctl_file_marker_reset(void) 1224 { 1225 struct proc *p; 1226 1227 PROCLIST_FOREACH(p, &allproc) { 1228 struct filedesc *fd = p->p_fd; 1229 fdtab_t *dt; 1230 u_int i; 1231 1232 mutex_enter(&fd->fd_lock); 1233 1234 dt = fd->fd_dt; 1235 for (i = 0; i < dt->dt_nfiles; i++) { 1236 struct file *fp; 1237 fdfile_t *ff; 1238 1239 if ((ff = dt->dt_ff[i]) == NULL) { 1240 continue; 1241 } 1242 1243 if ((fp = ff->ff_file) == NULL) { 1244 continue; 1245 } 1246 1247 fp->f_marker = 0; 1248 } 1249 1250 mutex_exit(&fd->fd_lock); 1251 } 1252 } 1253 1254 /* 1255 * sysctl helper routine for kern.file pseudo-subtree. 1256 */ 1257 static int 1258 sysctl_kern_file(SYSCTLFN_ARGS) 1259 { 1260 int error; 1261 size_t buflen; 1262 struct file *fp, fbuf; 1263 char *start, *where; 1264 struct proc *p; 1265 1266 start = where = oldp; 1267 buflen = *oldlenp; 1268 1269 if (where == NULL) { 1270 /* 1271 * overestimate by 10 files 1272 */ 1273 *oldlenp = sizeof(filehead) + (nfiles + 10) * 1274 sizeof(struct file); 1275 return (0); 1276 } 1277 1278 /* 1279 * first dcopyout filehead 1280 */ 1281 if (buflen < sizeof(filehead)) { 1282 *oldlenp = 0; 1283 return (0); 1284 } 1285 sysctl_unlock(); 1286 error = dcopyout(l, &filehead, where, sizeof(filehead)); 1287 if (error) { 1288 sysctl_relock(); 1289 return error; 1290 } 1291 buflen -= sizeof(filehead); 1292 where += sizeof(filehead); 1293 1294 /* 1295 * followed by an array of file structures 1296 */ 1297 mutex_enter(&sysctl_file_marker_lock); 1298 mutex_enter(proc_lock); 1299 PROCLIST_FOREACH(p, &allproc) { 1300 struct filedesc *fd; 1301 fdtab_t *dt; 1302 u_int i; 1303 1304 if (p->p_stat == SIDL) { 1305 /* skip embryonic processes */ 1306 continue; 1307 } 1308 mutex_enter(p->p_lock); 1309 error = kauth_authorize_process(l->l_cred, 1310 KAUTH_PROCESS_CANSEE, p, 1311 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_OPENFILES), 1312 NULL, NULL); 1313 mutex_exit(p->p_lock); 1314 if (error != 0) { 1315 /* 1316 * Don't leak kauth retval if we're silently 1317 * skipping this entry. 1318 */ 1319 error = 0; 1320 continue; 1321 } 1322 1323 /* 1324 * Grab a hold on the process. 1325 */ 1326 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1327 continue; 1328 } 1329 mutex_exit(proc_lock); 1330 1331 fd = p->p_fd; 1332 mutex_enter(&fd->fd_lock); 1333 dt = fd->fd_dt; 1334 for (i = 0; i < dt->dt_nfiles; i++) { 1335 fdfile_t *ff; 1336 1337 if ((ff = dt->dt_ff[i]) == NULL) { 1338 continue; 1339 } 1340 if ((fp = ff->ff_file) == NULL) { 1341 continue; 1342 } 1343 1344 mutex_enter(&fp->f_lock); 1345 1346 if ((fp->f_count == 0) || 1347 (fp->f_marker == sysctl_file_marker)) { 1348 mutex_exit(&fp->f_lock); 1349 continue; 1350 } 1351 1352 /* Check that we have enough space. */ 1353 if (buflen < sizeof(struct file)) { 1354 *oldlenp = where - start; 1355 mutex_exit(&fp->f_lock); 1356 error = ENOMEM; 1357 break; 1358 } 1359 1360 memcpy(&fbuf, fp, sizeof(fbuf)); 1361 mutex_exit(&fp->f_lock); 1362 error = dcopyout(l, &fbuf, where, sizeof(fbuf)); 1363 if (error) { 1364 break; 1365 } 1366 buflen -= sizeof(struct file); 1367 where += sizeof(struct file); 1368 1369 fp->f_marker = sysctl_file_marker; 1370 } 1371 mutex_exit(&fd->fd_lock); 1372 1373 /* 1374 * Release reference to process. 1375 */ 1376 mutex_enter(proc_lock); 1377 rw_exit(&p->p_reflock); 1378 1379 if (error) 1380 break; 1381 } 1382 1383 sysctl_file_marker++; 1384 /* Reset all markers if wrapped. */ 1385 if (sysctl_file_marker == 0) { 1386 sysctl_file_marker_reset(); 1387 sysctl_file_marker++; 1388 } 1389 1390 mutex_exit(proc_lock); 1391 mutex_exit(&sysctl_file_marker_lock); 1392 1393 *oldlenp = where - start; 1394 sysctl_relock(); 1395 return (error); 1396 } 1397 1398 /* 1399 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1400 * former it merely checks the message buffer is set up. For the latter, 1401 * it also copies out the data if necessary. 1402 */ 1403 static int 1404 sysctl_msgbuf(SYSCTLFN_ARGS) 1405 { 1406 char *where = oldp; 1407 size_t len, maxlen; 1408 long beg, end; 1409 extern kmutex_t log_lock; 1410 int error; 1411 1412 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1413 msgbufenabled = 0; 1414 return (ENXIO); 1415 } 1416 1417 switch (rnode->sysctl_num) { 1418 case KERN_MSGBUFSIZE: { 1419 struct sysctlnode node = *rnode; 1420 int msg_bufs = (int)msgbufp->msg_bufs; 1421 node.sysctl_data = &msg_bufs; 1422 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1423 } 1424 case KERN_MSGBUF: 1425 break; 1426 default: 1427 return (EOPNOTSUPP); 1428 } 1429 1430 if (newp != NULL) 1431 return (EPERM); 1432 1433 if (oldp == NULL) { 1434 /* always return full buffer size */ 1435 *oldlenp = msgbufp->msg_bufs; 1436 return (0); 1437 } 1438 1439 sysctl_unlock(); 1440 1441 /* 1442 * First, copy from the write pointer to the end of 1443 * message buffer. 1444 */ 1445 error = 0; 1446 mutex_spin_enter(&log_lock); 1447 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1448 beg = msgbufp->msg_bufx; 1449 end = msgbufp->msg_bufs; 1450 mutex_spin_exit(&log_lock); 1451 1452 while (maxlen > 0) { 1453 len = MIN(end - beg, maxlen); 1454 if (len == 0) 1455 break; 1456 /* XXX unlocked, but hardly matters. */ 1457 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1458 if (error) 1459 break; 1460 where += len; 1461 maxlen -= len; 1462 1463 /* 1464 * ... then, copy from the beginning of message buffer to 1465 * the write pointer. 1466 */ 1467 beg = 0; 1468 end = msgbufp->msg_bufx; 1469 } 1470 1471 sysctl_relock(); 1472 return (error); 1473 } 1474 1475 /* 1476 * sysctl helper routine for kern.defcorename. In the case of a new 1477 * string being assigned, check that it's not a zero-length string. 1478 * (XXX the check in -current doesn't work, but do we really care?) 1479 */ 1480 static int 1481 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1482 { 1483 int error; 1484 char *newcorename; 1485 struct sysctlnode node; 1486 1487 newcorename = PNBUF_GET(); 1488 node = *rnode; 1489 node.sysctl_data = &newcorename[0]; 1490 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1491 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1492 if (error || newp == NULL) { 1493 goto done; 1494 } 1495 1496 /* 1497 * when sysctl_lookup() deals with a string, it's guaranteed 1498 * to come back nul terminated. So there. :) 1499 */ 1500 if (strlen(newcorename) == 0) { 1501 error = EINVAL; 1502 } else { 1503 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1504 error = 0; 1505 } 1506 done: 1507 PNBUF_PUT(newcorename); 1508 return error; 1509 } 1510 1511 /* 1512 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1513 * across all cpus. 1514 */ 1515 static int 1516 sysctl_kern_cptime(SYSCTLFN_ARGS) 1517 { 1518 struct sysctlnode node = *rnode; 1519 uint64_t *cp_time = NULL; 1520 int error, n = ncpu, i; 1521 struct cpu_info *ci; 1522 CPU_INFO_ITERATOR cii; 1523 1524 /* 1525 * if you specifically pass a buffer that is the size of the 1526 * sum, or if you are probing for the size, you get the "sum" 1527 * of cp_time (and the size thereof) across all processors. 1528 * 1529 * alternately, you can pass an additional mib number and get 1530 * cp_time for that particular processor. 1531 */ 1532 switch (namelen) { 1533 case 0: 1534 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1535 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1536 n = -1; /* SUM */ 1537 } 1538 else { 1539 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1540 n = -2; /* ALL */ 1541 } 1542 break; 1543 case 1: 1544 if (name[0] < 0 || name[0] >= n) 1545 return (ENOENT); /* ENOSUCHPROCESSOR */ 1546 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1547 n = name[0]; 1548 /* 1549 * adjust these so that sysctl_lookup() will be happy 1550 */ 1551 name++; 1552 namelen--; 1553 break; 1554 default: 1555 return (EINVAL); 1556 } 1557 1558 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1559 if (cp_time == NULL) 1560 return (ENOMEM); 1561 node.sysctl_data = cp_time; 1562 memset(cp_time, 0, node.sysctl_size); 1563 1564 for (CPU_INFO_FOREACH(cii, ci)) { 1565 if (n <= 0) { 1566 for (i = 0; i < CPUSTATES; i++) { 1567 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1568 } 1569 } 1570 /* 1571 * if a specific processor was requested and we just 1572 * did it, we're done here 1573 */ 1574 if (n == 0) 1575 break; 1576 /* 1577 * if doing "all", skip to next cp_time set for next processor 1578 */ 1579 if (n == -2) 1580 cp_time += CPUSTATES; 1581 /* 1582 * if we're doing a specific processor, we're one 1583 * processor closer 1584 */ 1585 if (n > 0) 1586 n--; 1587 } 1588 1589 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1590 kmem_free(node.sysctl_data, node.sysctl_size); 1591 return (error); 1592 } 1593 1594 #if NPTY > 0 1595 /* 1596 * sysctl helper routine for kern.maxptys. Ensures that any new value 1597 * is acceptable to the pty subsystem. 1598 */ 1599 static int 1600 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1601 { 1602 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1603 int error, xmax; 1604 struct sysctlnode node; 1605 1606 /* get current value of maxptys */ 1607 xmax = pty_maxptys(0, 0); 1608 1609 node = *rnode; 1610 node.sysctl_data = &xmax; 1611 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1612 if (error || newp == NULL) 1613 return (error); 1614 1615 if (xmax != pty_maxptys(xmax, 1)) 1616 return (EINVAL); 1617 1618 return (0); 1619 } 1620 #endif /* NPTY > 0 */ 1621 1622 /* 1623 * sysctl helper routine for kern.sbmax. Basically just ensures that 1624 * any new value is not too small. 1625 */ 1626 static int 1627 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1628 { 1629 int error, new_sbmax; 1630 struct sysctlnode node; 1631 1632 new_sbmax = sb_max; 1633 node = *rnode; 1634 node.sysctl_data = &new_sbmax; 1635 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1636 if (error || newp == NULL) 1637 return (error); 1638 1639 KERNEL_LOCK(1, NULL); 1640 error = sb_max_set(new_sbmax); 1641 KERNEL_UNLOCK_ONE(NULL); 1642 1643 return (error); 1644 } 1645 1646 /* 1647 * sysctl helper routine for kern.urandom node. Picks a random number 1648 * for you. 1649 */ 1650 static int 1651 sysctl_kern_urnd(SYSCTLFN_ARGS) 1652 { 1653 #if NRND > 0 1654 int v, rv; 1655 1656 KERNEL_LOCK(1, NULL); 1657 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1658 KERNEL_UNLOCK_ONE(NULL); 1659 if (rv == sizeof(v)) { 1660 struct sysctlnode node = *rnode; 1661 node.sysctl_data = &v; 1662 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1663 } 1664 else 1665 return (EIO); /*XXX*/ 1666 #else 1667 return (EOPNOTSUPP); 1668 #endif 1669 } 1670 1671 /* 1672 * sysctl helper routine for kern.arandom node. Picks a random number 1673 * for you. 1674 */ 1675 static int 1676 sysctl_kern_arnd(SYSCTLFN_ARGS) 1677 { 1678 #if NRND > 0 1679 int error; 1680 void *v; 1681 struct sysctlnode node = *rnode; 1682 1683 if (*oldlenp == 0) 1684 return 0; 1685 if (*oldlenp > 8192) 1686 return E2BIG; 1687 1688 v = kmem_alloc(*oldlenp, KM_SLEEP); 1689 arc4randbytes(v, *oldlenp); 1690 node.sysctl_data = v; 1691 node.sysctl_size = *oldlenp; 1692 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1693 kmem_free(v, *oldlenp); 1694 return error; 1695 #else 1696 return (EOPNOTSUPP); 1697 #endif 1698 } 1699 /* 1700 * sysctl helper routine to do kern.lwp.* work. 1701 */ 1702 static int 1703 sysctl_kern_lwp(SYSCTLFN_ARGS) 1704 { 1705 struct kinfo_lwp klwp; 1706 struct proc *p; 1707 struct lwp *l2, *l3; 1708 char *where, *dp; 1709 int pid, elem_size, elem_count; 1710 int buflen, needed, error; 1711 bool gotit; 1712 1713 if (namelen == 1 && name[0] == CTL_QUERY) 1714 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1715 1716 dp = where = oldp; 1717 buflen = where != NULL ? *oldlenp : 0; 1718 error = needed = 0; 1719 1720 if (newp != NULL || namelen != 3) 1721 return (EINVAL); 1722 pid = name[0]; 1723 elem_size = name[1]; 1724 elem_count = name[2]; 1725 1726 sysctl_unlock(); 1727 if (pid == -1) { 1728 mutex_enter(proc_lock); 1729 PROCLIST_FOREACH(p, &allproc) { 1730 /* Grab a hold on the process. */ 1731 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1732 continue; 1733 } 1734 mutex_exit(proc_lock); 1735 1736 mutex_enter(p->p_lock); 1737 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1738 if (buflen >= elem_size && elem_count > 0) { 1739 lwp_lock(l2); 1740 fill_lwp(l2, &klwp); 1741 lwp_unlock(l2); 1742 mutex_exit(p->p_lock); 1743 1744 /* 1745 * Copy out elem_size, but not 1746 * larger than the size of a 1747 * struct kinfo_proc2. 1748 */ 1749 error = dcopyout(l, &klwp, dp, 1750 min(sizeof(klwp), elem_size)); 1751 if (error) { 1752 rw_exit(&p->p_reflock); 1753 goto cleanup; 1754 } 1755 mutex_enter(p->p_lock); 1756 LIST_FOREACH(l3, &p->p_lwps, 1757 l_sibling) { 1758 if (l2 == l3) 1759 break; 1760 } 1761 if (l3 == NULL) { 1762 mutex_exit(p->p_lock); 1763 rw_exit(&p->p_reflock); 1764 error = EAGAIN; 1765 goto cleanup; 1766 } 1767 dp += elem_size; 1768 buflen -= elem_size; 1769 elem_count--; 1770 } 1771 needed += elem_size; 1772 } 1773 mutex_exit(p->p_lock); 1774 1775 /* Drop reference to process. */ 1776 mutex_enter(proc_lock); 1777 rw_exit(&p->p_reflock); 1778 } 1779 mutex_exit(proc_lock); 1780 } else { 1781 mutex_enter(proc_lock); 1782 p = proc_find(pid); 1783 if (p == NULL) { 1784 error = ESRCH; 1785 mutex_exit(proc_lock); 1786 goto cleanup; 1787 } 1788 /* Grab a hold on the process. */ 1789 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1790 mutex_exit(proc_lock); 1791 if (!gotit) { 1792 error = ESRCH; 1793 goto cleanup; 1794 } 1795 1796 mutex_enter(p->p_lock); 1797 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1798 if (buflen >= elem_size && elem_count > 0) { 1799 lwp_lock(l2); 1800 fill_lwp(l2, &klwp); 1801 lwp_unlock(l2); 1802 mutex_exit(p->p_lock); 1803 /* 1804 * Copy out elem_size, but not larger than 1805 * the size of a struct kinfo_proc2. 1806 */ 1807 error = dcopyout(l, &klwp, dp, 1808 min(sizeof(klwp), elem_size)); 1809 if (error) { 1810 rw_exit(&p->p_reflock); 1811 goto cleanup; 1812 } 1813 mutex_enter(p->p_lock); 1814 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1815 if (l2 == l3) 1816 break; 1817 } 1818 if (l3 == NULL) { 1819 mutex_exit(p->p_lock); 1820 rw_exit(&p->p_reflock); 1821 error = EAGAIN; 1822 goto cleanup; 1823 } 1824 dp += elem_size; 1825 buflen -= elem_size; 1826 elem_count--; 1827 } 1828 needed += elem_size; 1829 } 1830 mutex_exit(p->p_lock); 1831 1832 /* Drop reference to process. */ 1833 rw_exit(&p->p_reflock); 1834 } 1835 1836 if (where != NULL) { 1837 *oldlenp = dp - where; 1838 if (needed > *oldlenp) { 1839 sysctl_relock(); 1840 return (ENOMEM); 1841 } 1842 } else { 1843 needed += KERN_LWPSLOP; 1844 *oldlenp = needed; 1845 } 1846 error = 0; 1847 cleanup: 1848 sysctl_relock(); 1849 return (error); 1850 } 1851 1852 /* 1853 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1854 * given value is not too large or two small, and is at least one 1855 * timer tick if not zero. 1856 */ 1857 static int 1858 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1859 { 1860 /* userland sees value in ms, internally is in ticks */ 1861 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1862 int error, timo, lsleep; 1863 struct sysctlnode node; 1864 1865 lsleep = forkfsleep * 1000 / hz; 1866 node = *rnode; 1867 node.sysctl_data = &lsleep; 1868 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1869 if (error || newp == NULL) 1870 return (error); 1871 1872 /* refuse negative values, and overly 'long time' */ 1873 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1874 return (EINVAL); 1875 1876 timo = mstohz(lsleep); 1877 1878 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1879 if (lsleep != 0 && timo == 0) 1880 forkfsleep = 1; 1881 else 1882 forkfsleep = timo; 1883 1884 return (0); 1885 } 1886 1887 /* 1888 * sysctl helper routine for kern.root_partition 1889 */ 1890 static int 1891 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1892 { 1893 int rootpart = DISKPART(rootdev); 1894 struct sysctlnode node = *rnode; 1895 1896 node.sysctl_data = &rootpart; 1897 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1898 } 1899 1900 /* 1901 * sysctl helper function for kern.drivers 1902 */ 1903 static int 1904 sysctl_kern_drivers(SYSCTLFN_ARGS) 1905 { 1906 int error; 1907 size_t buflen; 1908 struct kinfo_drivers kd; 1909 char *start, *where; 1910 const char *dname; 1911 int i; 1912 extern struct devsw_conv *devsw_conv; 1913 extern int max_devsw_convs; 1914 1915 if (newp != NULL || namelen != 0) 1916 return (EINVAL); 1917 1918 start = where = oldp; 1919 buflen = *oldlenp; 1920 if (where == NULL) { 1921 *oldlenp = max_devsw_convs * sizeof kd; 1922 return 0; 1923 } 1924 1925 /* 1926 * An array of kinfo_drivers structures 1927 */ 1928 error = 0; 1929 sysctl_unlock(); 1930 mutex_enter(&device_lock); 1931 for (i = 0; i < max_devsw_convs; i++) { 1932 dname = devsw_conv[i].d_name; 1933 if (dname == NULL) 1934 continue; 1935 if (buflen < sizeof kd) { 1936 error = ENOMEM; 1937 break; 1938 } 1939 memset(&kd, 0, sizeof(kd)); 1940 kd.d_bmajor = devsw_conv[i].d_bmajor; 1941 kd.d_cmajor = devsw_conv[i].d_cmajor; 1942 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1943 mutex_exit(&device_lock); 1944 error = dcopyout(l, &kd, where, sizeof kd); 1945 mutex_enter(&device_lock); 1946 if (error != 0) 1947 break; 1948 buflen -= sizeof kd; 1949 where += sizeof kd; 1950 } 1951 mutex_exit(&device_lock); 1952 sysctl_relock(); 1953 *oldlenp = where - start; 1954 return error; 1955 } 1956 1957 /* 1958 * sysctl helper function for kern.file2 1959 */ 1960 static int 1961 sysctl_kern_file2(SYSCTLFN_ARGS) 1962 { 1963 struct proc *p; 1964 struct file *fp; 1965 struct filedesc *fd; 1966 struct kinfo_file kf; 1967 char *dp; 1968 u_int i, op; 1969 size_t len, needed, elem_size, out_size; 1970 int error, arg, elem_count; 1971 fdfile_t *ff; 1972 fdtab_t *dt; 1973 1974 if (namelen == 1 && name[0] == CTL_QUERY) 1975 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1976 1977 if (namelen != 4) 1978 return (EINVAL); 1979 1980 error = 0; 1981 dp = oldp; 1982 len = (oldp != NULL) ? *oldlenp : 0; 1983 op = name[0]; 1984 arg = name[1]; 1985 elem_size = name[2]; 1986 elem_count = name[3]; 1987 out_size = MIN(sizeof(kf), elem_size); 1988 needed = 0; 1989 1990 if (elem_size < 1 || elem_count < 0) 1991 return (EINVAL); 1992 1993 switch (op) { 1994 case KERN_FILE_BYFILE: 1995 case KERN_FILE_BYPID: 1996 /* 1997 * We're traversing the process list in both cases; the BYFILE 1998 * case does additional work of keeping track of files already 1999 * looked at. 2000 */ 2001 2002 /* doesn't use arg so it must be zero */ 2003 if ((op == KERN_FILE_BYFILE) && (arg != 0)) 2004 return EINVAL; 2005 2006 if ((op == KERN_FILE_BYPID) && (arg < -1)) 2007 /* -1 means all processes */ 2008 return (EINVAL); 2009 2010 sysctl_unlock(); 2011 if (op == KERN_FILE_BYFILE) 2012 mutex_enter(&sysctl_file_marker_lock); 2013 mutex_enter(proc_lock); 2014 PROCLIST_FOREACH(p, &allproc) { 2015 if (p->p_stat == SIDL) { 2016 /* skip embryonic processes */ 2017 continue; 2018 } 2019 if (arg > 0 && p->p_pid != arg) { 2020 /* pick only the one we want */ 2021 /* XXX want 0 to mean "kernel files" */ 2022 continue; 2023 } 2024 mutex_enter(p->p_lock); 2025 error = kauth_authorize_process(l->l_cred, 2026 KAUTH_PROCESS_CANSEE, p, 2027 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_OPENFILES), 2028 NULL, NULL); 2029 mutex_exit(p->p_lock); 2030 if (error != 0) { 2031 /* 2032 * Don't leak kauth retval if we're silently 2033 * skipping this entry. 2034 */ 2035 error = 0; 2036 continue; 2037 } 2038 2039 /* 2040 * Grab a hold on the process. 2041 */ 2042 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 2043 continue; 2044 } 2045 mutex_exit(proc_lock); 2046 2047 fd = p->p_fd; 2048 mutex_enter(&fd->fd_lock); 2049 dt = fd->fd_dt; 2050 for (i = 0; i < dt->dt_nfiles; i++) { 2051 if ((ff = dt->dt_ff[i]) == NULL) { 2052 continue; 2053 } 2054 if ((fp = ff->ff_file) == NULL) { 2055 continue; 2056 } 2057 2058 if ((op == KERN_FILE_BYFILE) && 2059 (fp->f_marker == sysctl_file_marker)) { 2060 continue; 2061 } 2062 if (len >= elem_size && elem_count > 0) { 2063 mutex_enter(&fp->f_lock); 2064 fill_file(&kf, fp, ff, i, p->p_pid); 2065 mutex_exit(&fp->f_lock); 2066 mutex_exit(&fd->fd_lock); 2067 error = dcopyout(l, &kf, dp, out_size); 2068 mutex_enter(&fd->fd_lock); 2069 if (error) 2070 break; 2071 dp += elem_size; 2072 len -= elem_size; 2073 } 2074 if (op == KERN_FILE_BYFILE) 2075 fp->f_marker = sysctl_file_marker; 2076 needed += elem_size; 2077 if (elem_count > 0 && elem_count != INT_MAX) 2078 elem_count--; 2079 } 2080 mutex_exit(&fd->fd_lock); 2081 2082 /* 2083 * Release reference to process. 2084 */ 2085 mutex_enter(proc_lock); 2086 rw_exit(&p->p_reflock); 2087 } 2088 if (op == KERN_FILE_BYFILE) { 2089 sysctl_file_marker++; 2090 2091 /* Reset all markers if wrapped. */ 2092 if (sysctl_file_marker == 0) { 2093 sysctl_file_marker_reset(); 2094 sysctl_file_marker++; 2095 } 2096 } 2097 mutex_exit(proc_lock); 2098 if (op == KERN_FILE_BYFILE) 2099 mutex_exit(&sysctl_file_marker_lock); 2100 sysctl_relock(); 2101 break; 2102 default: 2103 return (EINVAL); 2104 } 2105 2106 if (oldp == NULL) 2107 needed += KERN_FILESLOP * elem_size; 2108 *oldlenp = needed; 2109 2110 return (error); 2111 } 2112 2113 static void 2114 fill_file(struct kinfo_file *kp, const file_t *fp, const fdfile_t *ff, 2115 int i, pid_t pid) 2116 { 2117 2118 memset(kp, 0, sizeof(*kp)); 2119 2120 kp->ki_fileaddr = PTRTOUINT64(fp); 2121 kp->ki_flag = fp->f_flag; 2122 kp->ki_iflags = 0; 2123 kp->ki_ftype = fp->f_type; 2124 kp->ki_count = fp->f_count; 2125 kp->ki_msgcount = fp->f_msgcount; 2126 kp->ki_fucred = PTRTOUINT64(fp->f_cred); 2127 kp->ki_fuid = kauth_cred_geteuid(fp->f_cred); 2128 kp->ki_fgid = kauth_cred_getegid(fp->f_cred); 2129 kp->ki_fops = PTRTOUINT64(fp->f_ops); 2130 kp->ki_foffset = fp->f_offset; 2131 kp->ki_fdata = PTRTOUINT64(fp->f_data); 2132 2133 /* vnode information to glue this file to something */ 2134 if (fp->f_type == DTYPE_VNODE) { 2135 struct vnode *vp = (struct vnode *)fp->f_data; 2136 2137 kp->ki_vun = PTRTOUINT64(vp->v_un.vu_socket); 2138 kp->ki_vsize = vp->v_size; 2139 kp->ki_vtype = vp->v_type; 2140 kp->ki_vtag = vp->v_tag; 2141 kp->ki_vdata = PTRTOUINT64(vp->v_data); 2142 } 2143 2144 /* process information when retrieved via KERN_FILE_BYPID */ 2145 if (ff != NULL) { 2146 kp->ki_pid = pid; 2147 kp->ki_fd = i; 2148 kp->ki_ofileflags = ff->ff_exclose; 2149 kp->ki_usecount = ff->ff_refcnt; 2150 } 2151 } 2152 2153 static int 2154 sysctl_doeproc(SYSCTLFN_ARGS) 2155 { 2156 union { 2157 struct kinfo_proc kproc; 2158 struct kinfo_proc2 kproc2; 2159 } *kbuf; 2160 struct proc *p, *next, *marker; 2161 char *where, *dp; 2162 int type, op, arg, error; 2163 u_int elem_size, kelem_size, elem_count; 2164 size_t buflen, needed; 2165 bool match, zombie, mmmbrains; 2166 2167 if (namelen == 1 && name[0] == CTL_QUERY) 2168 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2169 2170 dp = where = oldp; 2171 buflen = where != NULL ? *oldlenp : 0; 2172 error = 0; 2173 needed = 0; 2174 type = rnode->sysctl_num; 2175 2176 if (type == KERN_PROC) { 2177 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 2178 return (EINVAL); 2179 op = name[0]; 2180 if (op != KERN_PROC_ALL) 2181 arg = name[1]; 2182 else 2183 arg = 0; /* Quell compiler warning */ 2184 elem_count = 0; /* Ditto */ 2185 kelem_size = elem_size = sizeof(kbuf->kproc); 2186 } else { 2187 if (namelen != 4) 2188 return (EINVAL); 2189 op = name[0]; 2190 arg = name[1]; 2191 elem_size = name[2]; 2192 elem_count = name[3]; 2193 kelem_size = sizeof(kbuf->kproc2); 2194 } 2195 2196 sysctl_unlock(); 2197 2198 kbuf = kmem_alloc(sizeof(*kbuf), KM_SLEEP); 2199 marker = kmem_alloc(sizeof(*marker), KM_SLEEP); 2200 marker->p_flag = PK_MARKER; 2201 2202 mutex_enter(proc_lock); 2203 mmmbrains = false; 2204 for (p = LIST_FIRST(&allproc);; p = next) { 2205 if (p == NULL) { 2206 if (!mmmbrains) { 2207 p = LIST_FIRST(&zombproc); 2208 mmmbrains = true; 2209 } 2210 if (p == NULL) 2211 break; 2212 } 2213 next = LIST_NEXT(p, p_list); 2214 if ((p->p_flag & PK_MARKER) != 0) 2215 continue; 2216 2217 /* 2218 * Skip embryonic processes. 2219 */ 2220 if (p->p_stat == SIDL) 2221 continue; 2222 2223 mutex_enter(p->p_lock); 2224 error = kauth_authorize_process(l->l_cred, 2225 KAUTH_PROCESS_CANSEE, p, 2226 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENTRY), NULL, NULL); 2227 if (error != 0) { 2228 mutex_exit(p->p_lock); 2229 continue; 2230 } 2231 2232 /* 2233 * TODO - make more efficient (see notes below). 2234 * do by session. 2235 */ 2236 switch (op) { 2237 case KERN_PROC_PID: 2238 /* could do this with just a lookup */ 2239 match = (p->p_pid == (pid_t)arg); 2240 break; 2241 2242 case KERN_PROC_PGRP: 2243 /* could do this by traversing pgrp */ 2244 match = (p->p_pgrp->pg_id == (pid_t)arg); 2245 break; 2246 2247 case KERN_PROC_SESSION: 2248 match = (p->p_session->s_sid == (pid_t)arg); 2249 break; 2250 2251 case KERN_PROC_TTY: 2252 match = true; 2253 if (arg == (int) KERN_PROC_TTY_REVOKE) { 2254 if ((p->p_lflag & PL_CONTROLT) == 0 || 2255 p->p_session->s_ttyp == NULL || 2256 p->p_session->s_ttyvp != NULL) { 2257 match = false; 2258 } 2259 } else if ((p->p_lflag & PL_CONTROLT) == 0 || 2260 p->p_session->s_ttyp == NULL) { 2261 if ((dev_t)arg != KERN_PROC_TTY_NODEV) { 2262 match = false; 2263 } 2264 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) { 2265 match = false; 2266 } 2267 break; 2268 2269 case KERN_PROC_UID: 2270 match = (kauth_cred_geteuid(p->p_cred) == (uid_t)arg); 2271 break; 2272 2273 case KERN_PROC_RUID: 2274 match = (kauth_cred_getuid(p->p_cred) == (uid_t)arg); 2275 break; 2276 2277 case KERN_PROC_GID: 2278 match = (kauth_cred_getegid(p->p_cred) == (uid_t)arg); 2279 break; 2280 2281 case KERN_PROC_RGID: 2282 match = (kauth_cred_getgid(p->p_cred) == (uid_t)arg); 2283 break; 2284 2285 case KERN_PROC_ALL: 2286 match = true; 2287 /* allow everything */ 2288 break; 2289 2290 default: 2291 error = EINVAL; 2292 mutex_exit(p->p_lock); 2293 goto cleanup; 2294 } 2295 if (!match) { 2296 mutex_exit(p->p_lock); 2297 continue; 2298 } 2299 2300 /* 2301 * Grab a hold on the process. 2302 */ 2303 if (mmmbrains) { 2304 zombie = true; 2305 } else { 2306 zombie = !rw_tryenter(&p->p_reflock, RW_READER); 2307 } 2308 if (zombie) { 2309 LIST_INSERT_AFTER(p, marker, p_list); 2310 } 2311 2312 if (buflen >= elem_size && 2313 (type == KERN_PROC || elem_count > 0)) { 2314 if (type == KERN_PROC) { 2315 kbuf->kproc.kp_proc = *p; 2316 fill_eproc(p, &kbuf->kproc.kp_eproc, zombie); 2317 } else { 2318 fill_kproc2(p, &kbuf->kproc2, zombie); 2319 elem_count--; 2320 } 2321 mutex_exit(p->p_lock); 2322 mutex_exit(proc_lock); 2323 /* 2324 * Copy out elem_size, but not larger than kelem_size 2325 */ 2326 error = dcopyout(l, kbuf, dp, 2327 min(kelem_size, elem_size)); 2328 mutex_enter(proc_lock); 2329 if (error) { 2330 goto bah; 2331 } 2332 dp += elem_size; 2333 buflen -= elem_size; 2334 } else { 2335 mutex_exit(p->p_lock); 2336 } 2337 needed += elem_size; 2338 2339 /* 2340 * Release reference to process. 2341 */ 2342 if (zombie) { 2343 next = LIST_NEXT(marker, p_list); 2344 LIST_REMOVE(marker, p_list); 2345 } else { 2346 rw_exit(&p->p_reflock); 2347 next = LIST_NEXT(p, p_list); 2348 } 2349 } 2350 mutex_exit(proc_lock); 2351 2352 if (where != NULL) { 2353 *oldlenp = dp - where; 2354 if (needed > *oldlenp) { 2355 error = ENOMEM; 2356 goto out; 2357 } 2358 } else { 2359 needed += KERN_PROCSLOP; 2360 *oldlenp = needed; 2361 } 2362 if (kbuf) 2363 kmem_free(kbuf, sizeof(*kbuf)); 2364 if (marker) 2365 kmem_free(marker, sizeof(*marker)); 2366 sysctl_relock(); 2367 return 0; 2368 bah: 2369 if (zombie) 2370 LIST_REMOVE(marker, p_list); 2371 else 2372 rw_exit(&p->p_reflock); 2373 cleanup: 2374 mutex_exit(proc_lock); 2375 out: 2376 if (kbuf) 2377 kmem_free(kbuf, sizeof(*kbuf)); 2378 if (marker) 2379 kmem_free(marker, sizeof(*marker)); 2380 sysctl_relock(); 2381 return error; 2382 } 2383 2384 /* 2385 * sysctl helper routine for kern.proc_args pseudo-subtree. 2386 */ 2387 static int 2388 sysctl_kern_proc_args(SYSCTLFN_ARGS) 2389 { 2390 struct ps_strings pss; 2391 struct proc *p; 2392 size_t len, i; 2393 struct uio auio; 2394 struct iovec aiov; 2395 pid_t pid; 2396 int nargv, type, error, argvlen; 2397 char *arg; 2398 char **argv = NULL; 2399 char *tmp; 2400 struct vmspace *vmspace; 2401 vaddr_t psstr_addr; 2402 vaddr_t offsetn; 2403 vaddr_t offsetv; 2404 2405 if (namelen == 1 && name[0] == CTL_QUERY) 2406 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2407 2408 if (newp != NULL || namelen != 2) 2409 return (EINVAL); 2410 pid = name[0]; 2411 type = name[1]; 2412 argv = NULL; 2413 argvlen = 0; 2414 2415 switch (type) { 2416 case KERN_PROC_ARGV: 2417 case KERN_PROC_NARGV: 2418 case KERN_PROC_ENV: 2419 case KERN_PROC_NENV: 2420 /* ok */ 2421 break; 2422 default: 2423 return (EINVAL); 2424 } 2425 2426 sysctl_unlock(); 2427 2428 /* check pid */ 2429 mutex_enter(proc_lock); 2430 if ((p = proc_find(pid)) == NULL) { 2431 error = EINVAL; 2432 goto out_locked; 2433 } 2434 mutex_enter(p->p_lock); 2435 2436 /* Check permission. */ 2437 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 2438 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2439 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ARGS), NULL, NULL); 2440 else if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) 2441 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2442 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENV), NULL, NULL); 2443 else 2444 error = EINVAL; /* XXXGCC */ 2445 if (error) { 2446 mutex_exit(p->p_lock); 2447 goto out_locked; 2448 } 2449 2450 if (oldp == NULL) { 2451 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 2452 *oldlenp = sizeof (int); 2453 else 2454 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 2455 error = 0; 2456 mutex_exit(p->p_lock); 2457 goto out_locked; 2458 } 2459 2460 /* 2461 * Zombies don't have a stack, so we can't read their psstrings. 2462 * System processes also don't have a user stack. 2463 */ 2464 if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) { 2465 error = EINVAL; 2466 mutex_exit(p->p_lock); 2467 goto out_locked; 2468 } 2469 2470 /* 2471 * Lock the process down in memory. 2472 */ 2473 psstr_addr = (vaddr_t)p->p_psstr; 2474 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) { 2475 offsetn = p->p_psnargv; 2476 offsetv = p->p_psargv; 2477 } else { 2478 offsetn = p->p_psnenv; 2479 offsetv = p->p_psenv; 2480 } 2481 vmspace = p->p_vmspace; 2482 uvmspace_addref(vmspace); 2483 mutex_exit(p->p_lock); 2484 mutex_exit(proc_lock); 2485 2486 /* 2487 * Allocate a temporary buffer to hold the arguments. 2488 */ 2489 arg = kmem_alloc(PAGE_SIZE, KM_SLEEP); 2490 2491 /* 2492 * Read in the ps_strings structure. 2493 */ 2494 aiov.iov_base = &pss; 2495 aiov.iov_len = sizeof(pss); 2496 auio.uio_iov = &aiov; 2497 auio.uio_iovcnt = 1; 2498 auio.uio_offset = psstr_addr; 2499 auio.uio_resid = sizeof(pss); 2500 auio.uio_rw = UIO_READ; 2501 UIO_SETUP_SYSSPACE(&auio); 2502 error = uvm_io(&vmspace->vm_map, &auio); 2503 if (error) 2504 goto done; 2505 2506 memcpy(&nargv, (char *)&pss + offsetn, sizeof(nargv)); 2507 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 2508 error = dcopyout(l, &nargv, oldp, sizeof(nargv)); 2509 *oldlenp = sizeof(nargv); 2510 goto done; 2511 } 2512 /* 2513 * Now read the address of the argument vector. 2514 */ 2515 switch (type) { 2516 case KERN_PROC_ARGV: 2517 /* FALLTHROUGH */ 2518 case KERN_PROC_ENV: 2519 memcpy(&tmp, (char *)&pss + offsetv, sizeof(tmp)); 2520 break; 2521 default: 2522 error = EINVAL; 2523 goto done; 2524 } 2525 2526 #ifdef COMPAT_NETBSD32 2527 if (p->p_flag & PK_32) 2528 len = sizeof(netbsd32_charp) * nargv; 2529 else 2530 #endif 2531 len = sizeof(char *) * nargv; 2532 2533 if ((argvlen = len) != 0) 2534 argv = kmem_alloc(len, KM_SLEEP); 2535 2536 aiov.iov_base = argv; 2537 aiov.iov_len = len; 2538 auio.uio_iov = &aiov; 2539 auio.uio_iovcnt = 1; 2540 auio.uio_offset = (off_t)(unsigned long)tmp; 2541 auio.uio_resid = len; 2542 auio.uio_rw = UIO_READ; 2543 UIO_SETUP_SYSSPACE(&auio); 2544 error = uvm_io(&vmspace->vm_map, &auio); 2545 if (error) 2546 goto done; 2547 2548 /* 2549 * Now copy each string. 2550 */ 2551 len = 0; /* bytes written to user buffer */ 2552 for (i = 0; i < nargv; i++) { 2553 int finished = 0; 2554 vaddr_t base; 2555 size_t xlen; 2556 int j; 2557 2558 #ifdef COMPAT_NETBSD32 2559 if (p->p_flag & PK_32) { 2560 netbsd32_charp *argv32; 2561 2562 argv32 = (netbsd32_charp *)argv; 2563 base = (vaddr_t)NETBSD32PTR64(argv32[i]); 2564 } else 2565 #endif 2566 base = (vaddr_t)argv[i]; 2567 2568 /* 2569 * The program has messed around with its arguments, 2570 * possibly deleting some, and replacing them with 2571 * NULL's. Treat this as the last argument and not 2572 * a failure. 2573 */ 2574 if (base == 0) 2575 break; 2576 2577 while (!finished) { 2578 xlen = PAGE_SIZE - (base & PAGE_MASK); 2579 2580 aiov.iov_base = arg; 2581 aiov.iov_len = PAGE_SIZE; 2582 auio.uio_iov = &aiov; 2583 auio.uio_iovcnt = 1; 2584 auio.uio_offset = base; 2585 auio.uio_resid = xlen; 2586 auio.uio_rw = UIO_READ; 2587 UIO_SETUP_SYSSPACE(&auio); 2588 error = uvm_io(&vmspace->vm_map, &auio); 2589 if (error) 2590 goto done; 2591 2592 /* Look for the end of the string */ 2593 for (j = 0; j < xlen; j++) { 2594 if (arg[j] == '\0') { 2595 xlen = j + 1; 2596 finished = 1; 2597 break; 2598 } 2599 } 2600 2601 /* Check for user buffer overflow */ 2602 if (len + xlen > *oldlenp) { 2603 finished = 1; 2604 if (len > *oldlenp) 2605 xlen = 0; 2606 else 2607 xlen = *oldlenp - len; 2608 } 2609 2610 /* Copyout the page */ 2611 error = dcopyout(l, arg, (char *)oldp + len, xlen); 2612 if (error) 2613 goto done; 2614 2615 len += xlen; 2616 base += xlen; 2617 } 2618 } 2619 *oldlenp = len; 2620 2621 done: 2622 if (argvlen != 0) 2623 kmem_free(argv, argvlen); 2624 uvmspace_free(vmspace); 2625 kmem_free(arg, PAGE_SIZE); 2626 sysctl_relock(); 2627 return error; 2628 2629 out_locked: 2630 mutex_exit(proc_lock); 2631 sysctl_relock(); 2632 return error; 2633 } 2634 2635 static int 2636 sysctl_security_setidcore(SYSCTLFN_ARGS) 2637 { 2638 int newsize, error; 2639 struct sysctlnode node; 2640 2641 node = *rnode; 2642 node.sysctl_data = &newsize; 2643 newsize = *(int *)rnode->sysctl_data; 2644 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2645 if (error || newp == NULL) 2646 return error; 2647 2648 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2649 0, NULL, NULL, NULL)) 2650 return (EPERM); 2651 2652 *(int *)rnode->sysctl_data = newsize; 2653 2654 return 0; 2655 } 2656 2657 static int 2658 sysctl_security_setidcorename(SYSCTLFN_ARGS) 2659 { 2660 int error; 2661 char *newsetidcorename; 2662 struct sysctlnode node; 2663 2664 newsetidcorename = PNBUF_GET(); 2665 node = *rnode; 2666 node.sysctl_data = newsetidcorename; 2667 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 2668 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2669 if (error || newp == NULL) { 2670 goto out; 2671 } 2672 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2673 0, NULL, NULL, NULL)) { 2674 error = EPERM; 2675 goto out; 2676 } 2677 if (strlen(newsetidcorename) == 0) { 2678 error = EINVAL; 2679 goto out; 2680 } 2681 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 2682 out: 2683 PNBUF_PUT(newsetidcorename); 2684 return error; 2685 } 2686 2687 /* 2688 * sysctl helper routine for kern.cp_id node. Maps cpus to their 2689 * cpuids. 2690 */ 2691 static int 2692 sysctl_kern_cpid(SYSCTLFN_ARGS) 2693 { 2694 struct sysctlnode node = *rnode; 2695 uint64_t *cp_id = NULL; 2696 int error, n = ncpu; 2697 struct cpu_info *ci; 2698 CPU_INFO_ITERATOR cii; 2699 2700 /* 2701 * Here you may either retrieve a single cpu id or the whole 2702 * set. The size you get back when probing depends on what 2703 * you ask for. 2704 */ 2705 switch (namelen) { 2706 case 0: 2707 node.sysctl_size = n * sizeof(uint64_t); 2708 n = -2; /* ALL */ 2709 break; 2710 case 1: 2711 if (name[0] < 0 || name[0] >= n) 2712 return (ENOENT); /* ENOSUCHPROCESSOR */ 2713 node.sysctl_size = sizeof(uint64_t); 2714 n = name[0]; 2715 /* 2716 * adjust these so that sysctl_lookup() will be happy 2717 */ 2718 name++; 2719 namelen--; 2720 break; 2721 default: 2722 return (EINVAL); 2723 } 2724 2725 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 2726 if (cp_id == NULL) 2727 return (ENOMEM); 2728 node.sysctl_data = cp_id; 2729 memset(cp_id, 0, node.sysctl_size); 2730 2731 for (CPU_INFO_FOREACH(cii, ci)) { 2732 if (n <= 0) 2733 cp_id[0] = cpu_index(ci); 2734 /* 2735 * if a specific processor was requested and we just 2736 * did it, we're done here 2737 */ 2738 if (n == 0) 2739 break; 2740 /* 2741 * if doing "all", skip to next cp_id slot for next processor 2742 */ 2743 if (n == -2) 2744 cp_id++; 2745 /* 2746 * if we're doing a specific processor, we're one 2747 * processor closer 2748 */ 2749 if (n > 0) 2750 n--; 2751 } 2752 2753 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2754 kmem_free(node.sysctl_data, node.sysctl_size); 2755 return (error); 2756 } 2757 2758 /* 2759 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 2760 * calculate on the fly taking into account integer overflow and the 2761 * current wired count. 2762 */ 2763 static int 2764 sysctl_hw_usermem(SYSCTLFN_ARGS) 2765 { 2766 u_int ui; 2767 u_quad_t uq; 2768 struct sysctlnode node; 2769 2770 node = *rnode; 2771 switch (rnode->sysctl_num) { 2772 case HW_USERMEM: 2773 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 2774 ui = UINT_MAX; 2775 else 2776 ui *= PAGE_SIZE; 2777 node.sysctl_data = &ui; 2778 break; 2779 case HW_USERMEM64: 2780 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2781 node.sysctl_data = &uq; 2782 break; 2783 default: 2784 return (EINVAL); 2785 } 2786 2787 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2788 } 2789 2790 /* 2791 * sysctl helper routine for kern.cnmagic node. Pulls the old value 2792 * out, encoded, and stuffs the new value in for decoding. 2793 */ 2794 static int 2795 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2796 { 2797 char magic[CNS_LEN]; 2798 int error; 2799 struct sysctlnode node; 2800 2801 if (oldp) 2802 cn_get_magic(magic, CNS_LEN); 2803 node = *rnode; 2804 node.sysctl_data = &magic[0]; 2805 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2806 if (error || newp == NULL) 2807 return (error); 2808 2809 return (cn_set_magic(magic)); 2810 } 2811 2812 /* 2813 * ******************************************************************** 2814 * section 3: public helper routines that are used for more than one 2815 * node 2816 * ******************************************************************** 2817 */ 2818 2819 /* 2820 * sysctl helper routine for the kern.root_device node and some ports' 2821 * machdep.root_device nodes. 2822 */ 2823 int 2824 sysctl_root_device(SYSCTLFN_ARGS) 2825 { 2826 struct sysctlnode node; 2827 2828 node = *rnode; 2829 node.sysctl_data = root_device->dv_xname; 2830 node.sysctl_size = strlen(device_xname(root_device)) + 1; 2831 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2832 } 2833 2834 /* 2835 * sysctl helper routine for kern.consdev, dependent on the current 2836 * state of the console. Also used for machdep.console_device on some 2837 * ports. 2838 */ 2839 int 2840 sysctl_consdev(SYSCTLFN_ARGS) 2841 { 2842 dev_t consdev; 2843 uint32_t oconsdev; 2844 struct sysctlnode node; 2845 2846 if (cn_tab != NULL) 2847 consdev = cn_tab->cn_dev; 2848 else 2849 consdev = NODEV; 2850 node = *rnode; 2851 switch (*oldlenp) { 2852 case sizeof(consdev): 2853 node.sysctl_data = &consdev; 2854 node.sysctl_size = sizeof(consdev); 2855 break; 2856 case sizeof(oconsdev): 2857 oconsdev = (uint32_t)consdev; 2858 node.sysctl_data = &oconsdev; 2859 node.sysctl_size = sizeof(oconsdev); 2860 break; 2861 default: 2862 return EINVAL; 2863 } 2864 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2865 } 2866 2867 /* 2868 * ******************************************************************** 2869 * section 4: support for some helpers 2870 * ******************************************************************** 2871 */ 2872 /* 2873 * Find the most ``active'' lwp of a process and return it for ps display 2874 * purposes 2875 */ 2876 static struct lwp * 2877 proc_active_lwp(struct proc *p) 2878 { 2879 static const int ostat[] = { 2880 0, 2881 2, /* LSIDL */ 2882 6, /* LSRUN */ 2883 5, /* LSSLEEP */ 2884 4, /* LSSTOP */ 2885 0, /* LSZOMB */ 2886 1, /* LSDEAD */ 2887 7, /* LSONPROC */ 2888 3 /* LSSUSPENDED */ 2889 }; 2890 2891 struct lwp *l, *lp = NULL; 2892 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 2893 KASSERT(l->l_stat >= 0 && l->l_stat < __arraycount(ostat)); 2894 if (lp == NULL || 2895 ostat[l->l_stat] > ostat[lp->l_stat] || 2896 (ostat[l->l_stat] == ostat[lp->l_stat] && 2897 l->l_cpticks > lp->l_cpticks)) { 2898 lp = l; 2899 continue; 2900 } 2901 } 2902 return lp; 2903 } 2904 2905 2906 /* 2907 * Fill in a kinfo_proc2 structure for the specified process. 2908 */ 2909 static void 2910 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki, bool zombie) 2911 { 2912 struct tty *tp; 2913 struct lwp *l, *l2; 2914 struct timeval ut, st, rt; 2915 sigset_t ss1, ss2; 2916 struct rusage ru; 2917 struct vmspace *vm; 2918 2919 KASSERT(mutex_owned(proc_lock)); 2920 KASSERT(mutex_owned(p->p_lock)); 2921 2922 sigemptyset(&ss1); 2923 sigemptyset(&ss2); 2924 memset(ki, 0, sizeof(*ki)); 2925 2926 ki->p_paddr = PTRTOUINT64(p); 2927 ki->p_fd = PTRTOUINT64(p->p_fd); 2928 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2929 ki->p_stats = PTRTOUINT64(p->p_stats); 2930 ki->p_limit = PTRTOUINT64(p->p_limit); 2931 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2932 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2933 ki->p_sess = PTRTOUINT64(p->p_session); 2934 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2935 ki->p_ru = PTRTOUINT64(&p->p_stats->p_ru); 2936 ki->p_eflag = 0; 2937 ki->p_exitsig = p->p_exitsig; 2938 ki->p_flag = L_INMEM; /* Process never swapped out */ 2939 ki->p_flag |= sysctl_map_flags(sysctl_flagmap, p->p_flag); 2940 ki->p_flag |= sysctl_map_flags(sysctl_sflagmap, p->p_sflag); 2941 ki->p_flag |= sysctl_map_flags(sysctl_slflagmap, p->p_slflag); 2942 ki->p_flag |= sysctl_map_flags(sysctl_lflagmap, p->p_lflag); 2943 ki->p_flag |= sysctl_map_flags(sysctl_stflagmap, p->p_stflag); 2944 ki->p_pid = p->p_pid; 2945 if (p->p_pptr) 2946 ki->p_ppid = p->p_pptr->p_pid; 2947 else 2948 ki->p_ppid = 0; 2949 ki->p_uid = kauth_cred_geteuid(p->p_cred); 2950 ki->p_ruid = kauth_cred_getuid(p->p_cred); 2951 ki->p_gid = kauth_cred_getegid(p->p_cred); 2952 ki->p_rgid = kauth_cred_getgid(p->p_cred); 2953 ki->p_svuid = kauth_cred_getsvuid(p->p_cred); 2954 ki->p_svgid = kauth_cred_getsvgid(p->p_cred); 2955 ki->p_ngroups = kauth_cred_ngroups(p->p_cred); 2956 kauth_cred_getgroups(p->p_cred, ki->p_groups, 2957 min(ki->p_ngroups, sizeof(ki->p_groups) / sizeof(ki->p_groups[0])), 2958 UIO_SYSSPACE); 2959 2960 ki->p_uticks = p->p_uticks; 2961 ki->p_sticks = p->p_sticks; 2962 ki->p_iticks = p->p_iticks; 2963 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2964 ki->p_tracep = PTRTOUINT64(p->p_tracep); 2965 ki->p_traceflag = p->p_traceflag; 2966 2967 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2968 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2969 2970 ki->p_cpticks = 0; 2971 ki->p_pctcpu = p->p_pctcpu; 2972 ki->p_estcpu = 0; 2973 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2974 ki->p_realstat = p->p_stat; 2975 ki->p_nice = p->p_nice; 2976 ki->p_xstat = p->p_xstat; 2977 ki->p_acflag = p->p_acflag; 2978 2979 strncpy(ki->p_comm, p->p_comm, 2980 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2981 strncpy(ki->p_ename, p->p_emul->e_name, sizeof(ki->p_ename)); 2982 2983 ki->p_nlwps = p->p_nlwps; 2984 ki->p_realflag = ki->p_flag; 2985 2986 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 2987 vm = p->p_vmspace; 2988 ki->p_vm_rssize = vm_resident_count(vm); 2989 ki->p_vm_tsize = vm->vm_tsize; 2990 ki->p_vm_dsize = vm->vm_dsize; 2991 ki->p_vm_ssize = vm->vm_ssize; 2992 ki->p_vm_vsize = vm->vm_map.size; 2993 /* 2994 * Since the stack is initially mapped mostly with 2995 * PROT_NONE and grown as needed, adjust the "mapped size" 2996 * to skip the unused stack portion. 2997 */ 2998 ki->p_vm_msize = 2999 atop(vm->vm_map.size) - vm->vm_issize + vm->vm_ssize; 3000 3001 /* Pick the primary (first) LWP */ 3002 l = proc_active_lwp(p); 3003 KASSERT(l != NULL); 3004 lwp_lock(l); 3005 ki->p_nrlwps = p->p_nrlwps; 3006 ki->p_forw = 0; 3007 ki->p_back = 0; 3008 ki->p_addr = PTRTOUINT64(l->l_addr); 3009 ki->p_stat = l->l_stat; 3010 ki->p_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3011 ki->p_swtime = l->l_swtime; 3012 ki->p_slptime = l->l_slptime; 3013 if (l->l_stat == LSONPROC) 3014 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3015 else 3016 ki->p_schedflags = 0; 3017 ki->p_priority = lwp_eprio(l); 3018 ki->p_usrpri = l->l_priority; 3019 if (l->l_wchan) 3020 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 3021 ki->p_wchan = PTRTOUINT64(l->l_wchan); 3022 ki->p_cpuid = cpu_index(l->l_cpu); 3023 lwp_unlock(l); 3024 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 3025 /* This is hardly correct, but... */ 3026 sigplusset(&l->l_sigpend.sp_set, &ss1); 3027 sigplusset(&l->l_sigmask, &ss2); 3028 ki->p_cpticks += l->l_cpticks; 3029 ki->p_pctcpu += l->l_pctcpu; 3030 ki->p_estcpu += l->l_estcpu; 3031 } 3032 } 3033 sigplusset(&p->p_sigpend.sp_set, &ss2); 3034 memcpy(&ki->p_siglist, &ss1, sizeof(ki_sigset_t)); 3035 memcpy(&ki->p_sigmask, &ss2, sizeof(ki_sigset_t)); 3036 3037 if (p->p_session != NULL) { 3038 ki->p_sid = p->p_session->s_sid; 3039 ki->p__pgid = p->p_pgrp->pg_id; 3040 if (p->p_session->s_ttyvp) 3041 ki->p_eflag |= EPROC_CTTY; 3042 if (SESS_LEADER(p)) 3043 ki->p_eflag |= EPROC_SLEADER; 3044 strncpy(ki->p_login, p->p_session->s_login, 3045 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 3046 ki->p_jobc = p->p_pgrp->pg_jobc; 3047 if ((p->p_lflag & PL_CONTROLT) && (tp = p->p_session->s_ttyp)) { 3048 ki->p_tdev = tp->t_dev; 3049 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3050 ki->p_tsess = PTRTOUINT64(tp->t_session); 3051 } else { 3052 ki->p_tdev = (int32_t)NODEV; 3053 } 3054 } 3055 3056 if (!P_ZOMBIE(p) && !zombie) { 3057 ki->p_uvalid = 1; 3058 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 3059 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 3060 3061 calcru(p, &ut, &st, NULL, &rt); 3062 ki->p_rtime_sec = rt.tv_sec; 3063 ki->p_rtime_usec = rt.tv_usec; 3064 ki->p_uutime_sec = ut.tv_sec; 3065 ki->p_uutime_usec = ut.tv_usec; 3066 ki->p_ustime_sec = st.tv_sec; 3067 ki->p_ustime_usec = st.tv_usec; 3068 3069 memcpy(&ru, &p->p_stats->p_ru, sizeof(ru)); 3070 ki->p_uru_nvcsw = 0; 3071 ki->p_uru_nivcsw = 0; 3072 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 3073 ki->p_uru_nvcsw += (l2->l_ncsw - l2->l_nivcsw); 3074 ki->p_uru_nivcsw += l2->l_nivcsw; 3075 ruadd(&ru, &l2->l_ru); 3076 } 3077 ki->p_uru_maxrss = ru.ru_maxrss; 3078 ki->p_uru_ixrss = ru.ru_ixrss; 3079 ki->p_uru_idrss = ru.ru_idrss; 3080 ki->p_uru_isrss = ru.ru_isrss; 3081 ki->p_uru_minflt = ru.ru_minflt; 3082 ki->p_uru_majflt = ru.ru_majflt; 3083 ki->p_uru_nswap = ru.ru_nswap; 3084 ki->p_uru_inblock = ru.ru_inblock; 3085 ki->p_uru_oublock = ru.ru_oublock; 3086 ki->p_uru_msgsnd = ru.ru_msgsnd; 3087 ki->p_uru_msgrcv = ru.ru_msgrcv; 3088 ki->p_uru_nsignals = ru.ru_nsignals; 3089 3090 timeradd(&p->p_stats->p_cru.ru_utime, 3091 &p->p_stats->p_cru.ru_stime, &ut); 3092 ki->p_uctime_sec = ut.tv_sec; 3093 ki->p_uctime_usec = ut.tv_usec; 3094 } 3095 } 3096 3097 /* 3098 * Fill in a kinfo_lwp structure for the specified lwp. 3099 */ 3100 static void 3101 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 3102 { 3103 struct proc *p = l->l_proc; 3104 struct timeval tv; 3105 3106 KASSERT(lwp_locked(l, NULL)); 3107 3108 memset(kl, 0, sizeof(*kl)); 3109 3110 kl->l_forw = 0; 3111 kl->l_back = 0; 3112 kl->l_laddr = PTRTOUINT64(l); 3113 kl->l_addr = PTRTOUINT64(l->l_addr); 3114 kl->l_stat = l->l_stat; 3115 kl->l_lid = l->l_lid; 3116 kl->l_flag = L_INMEM; 3117 kl->l_flag |= sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 3118 kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 3119 3120 kl->l_swtime = l->l_swtime; 3121 kl->l_slptime = l->l_slptime; 3122 if (l->l_stat == LSONPROC) 3123 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3124 else 3125 kl->l_schedflags = 0; 3126 kl->l_priority = lwp_eprio(l); 3127 kl->l_usrpri = l->l_priority; 3128 if (l->l_wchan) 3129 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 3130 kl->l_wchan = PTRTOUINT64(l->l_wchan); 3131 kl->l_cpuid = cpu_index(l->l_cpu); 3132 bintime2timeval(&l->l_rtime, &tv); 3133 kl->l_rtime_sec = tv.tv_sec; 3134 kl->l_rtime_usec = tv.tv_usec; 3135 kl->l_cpticks = l->l_cpticks; 3136 kl->l_pctcpu = l->l_pctcpu; 3137 kl->l_pid = p->p_pid; 3138 if (l->l_name == NULL) 3139 kl->l_name[0] = '\0'; 3140 else 3141 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 3142 } 3143 3144 /* 3145 * Fill in an eproc structure for the specified process. 3146 */ 3147 void 3148 fill_eproc(struct proc *p, struct eproc *ep, bool zombie) 3149 { 3150 struct tty *tp; 3151 struct lwp *l; 3152 3153 KASSERT(mutex_owned(proc_lock)); 3154 KASSERT(mutex_owned(p->p_lock)); 3155 3156 memset(ep, 0, sizeof(*ep)); 3157 3158 ep->e_paddr = p; 3159 ep->e_sess = p->p_session; 3160 if (p->p_cred) { 3161 kauth_cred_topcred(p->p_cred, &ep->e_pcred); 3162 kauth_cred_toucred(p->p_cred, &ep->e_ucred); 3163 } 3164 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3165 struct vmspace *vm = p->p_vmspace; 3166 3167 ep->e_vm.vm_rssize = vm_resident_count(vm); 3168 ep->e_vm.vm_tsize = vm->vm_tsize; 3169 ep->e_vm.vm_dsize = vm->vm_dsize; 3170 ep->e_vm.vm_ssize = vm->vm_ssize; 3171 ep->e_vm.vm_map.size = vm->vm_map.size; 3172 3173 /* Pick the primary (first) LWP */ 3174 l = proc_active_lwp(p); 3175 KASSERT(l != NULL); 3176 lwp_lock(l); 3177 if (l->l_wchan) 3178 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 3179 lwp_unlock(l); 3180 } 3181 if (p->p_pptr) 3182 ep->e_ppid = p->p_pptr->p_pid; 3183 if (p->p_pgrp && p->p_session) { 3184 ep->e_pgid = p->p_pgrp->pg_id; 3185 ep->e_jobc = p->p_pgrp->pg_jobc; 3186 ep->e_sid = p->p_session->s_sid; 3187 if ((p->p_lflag & PL_CONTROLT) && 3188 (tp = ep->e_sess->s_ttyp)) { 3189 ep->e_tdev = tp->t_dev; 3190 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3191 ep->e_tsess = tp->t_session; 3192 } else 3193 ep->e_tdev = (uint32_t)NODEV; 3194 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 3195 if (SESS_LEADER(p)) 3196 ep->e_flag |= EPROC_SLEADER; 3197 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 3198 } 3199 ep->e_xsize = ep->e_xrssize = 0; 3200 ep->e_xccount = ep->e_xswrss = 0; 3201 } 3202 3203 u_int 3204 sysctl_map_flags(const u_int *map, u_int word) 3205 { 3206 u_int rv; 3207 3208 for (rv = 0; *map != 0; map += 2) 3209 if ((word & map[0]) != 0) 3210 rv |= map[1]; 3211 3212 return rv; 3213 } 3214
Indexes created Tue Sep 23 14:10:03 GMT 2025