init_sysctl.c revision 1.137.2.3
1 /* $NetBSD: init_sysctl.c,v 1.137.2.3 2008/06/23 04:31:50 wrstuden 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 1.137.2.3 2008/06/23 04:31:50 wrstuden Exp $"); 34 35 #include "opt_sysv.h" 36 #include "opt_posix.h" 37 #include "opt_compat_netbsd32.h" 38 #include "pty.h" 39 #include "rnd.h" 40 41 #include <sys/types.h> 42 #include <sys/param.h> 43 #include <sys/sysctl.h> 44 #include <sys/cpu.h> 45 #include <sys/errno.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/unistd.h> 49 #include <sys/disklabel.h> 50 #include <sys/rnd.h> 51 #include <sys/vnode.h> 52 #include <sys/mount.h> 53 #include <sys/namei.h> 54 #include <sys/msgbuf.h> 55 #include <dev/cons.h> 56 #include <sys/socketvar.h> 57 #include <sys/file.h> 58 #include <sys/filedesc.h> 59 #include <sys/tty.h> 60 #include <sys/malloc.h> 61 #include <sys/resource.h> 62 #include <sys/resourcevar.h> 63 #include <sys/exec.h> 64 #include <sys/conf.h> 65 #include <sys/device.h> 66 #include <sys/stat.h> 67 #include <sys/kauth.h> 68 #include <sys/ktrace.h> 69 70 #include <miscfs/specfs/specdev.h> 71 72 #ifdef COMPAT_NETBSD32 73 #include <compat/netbsd32/netbsd32.h> 74 #endif 75 76 #include <sys/cpu.h> 77 78 /* XXX this should not be here */ 79 int security_setidcore_dump; 80 char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core"; 81 uid_t security_setidcore_owner = 0; 82 gid_t security_setidcore_group = 0; 83 mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); 84 85 static const u_int sysctl_flagmap[] = { 86 PK_ADVLOCK, P_ADVLOCK, 87 PK_EXEC, P_EXEC, 88 PK_NOCLDWAIT, P_NOCLDWAIT, 89 PK_32, P_32, 90 PK_CLDSIGIGN, P_CLDSIGIGN, 91 PK_SUGID, P_SUGID, 92 0 93 }; 94 95 static const u_int sysctl_sflagmap[] = { 96 PS_NOCLDSTOP, P_NOCLDSTOP, 97 PS_WEXIT, P_WEXIT, 98 PS_STOPFORK, P_STOPFORK, 99 PS_STOPEXEC, P_STOPEXEC, 100 PS_STOPEXIT, P_STOPEXIT, 101 0 102 }; 103 104 static const u_int sysctl_slflagmap[] = { 105 PSL_TRACED, P_TRACED, 106 PSL_FSTRACE, P_FSTRACE, 107 PSL_CHTRACED, P_CHTRACED, 108 PSL_SYSCALL, P_SYSCALL, 109 0 110 }; 111 112 static const u_int sysctl_lflagmap[] = { 113 PL_CONTROLT, P_CONTROLT, 114 PL_PPWAIT, P_PPWAIT, 115 0 116 }; 117 118 static const u_int sysctl_stflagmap[] = { 119 PST_PROFIL, P_PROFIL, 120 0 121 122 }; 123 124 static const u_int sysctl_lwpflagmap[] = { 125 LW_INMEM, P_INMEM, 126 LW_SINTR, P_SINTR, 127 LW_SYSTEM, P_SYSTEM, 128 LW_SA, P_SA, /* WRS ??? */ 129 0 130 }; 131 132 static const u_int sysctl_lwpprflagmap[] = { 133 LPR_DETACHED, L_DETACHED, 134 0 135 }; 136 137 /* 138 * try over estimating by 5 procs/lwps 139 */ 140 #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) 141 #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) 142 143 static int dcopyout(struct lwp *, const void *, void *, size_t); 144 145 static int 146 dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) 147 { 148 int error; 149 150 error = copyout(kaddr, uaddr, len); 151 ktrmibio(-1, UIO_READ, uaddr, len, error); 152 153 return error; 154 } 155 156 #ifdef DIAGNOSTIC 157 static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); 158 #endif 159 static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); 160 static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); 161 static int sysctl_kern_maxproc(SYSCTLFN_PROTO); 162 static int sysctl_kern_hostid(SYSCTLFN_PROTO); 163 static int sysctl_setlen(SYSCTLFN_PROTO); 164 static int sysctl_kern_clockrate(SYSCTLFN_PROTO); 165 static int sysctl_kern_file(SYSCTLFN_PROTO); 166 static int sysctl_msgbuf(SYSCTLFN_PROTO); 167 static int sysctl_kern_defcorename(SYSCTLFN_PROTO); 168 static int sysctl_kern_cptime(SYSCTLFN_PROTO); 169 #if NPTY > 0 170 static int sysctl_kern_maxptys(SYSCTLFN_PROTO); 171 #endif /* NPTY > 0 */ 172 static int sysctl_kern_sbmax(SYSCTLFN_PROTO); 173 static int sysctl_kern_urnd(SYSCTLFN_PROTO); 174 static int sysctl_kern_arnd(SYSCTLFN_PROTO); 175 static int sysctl_kern_lwp(SYSCTLFN_PROTO); 176 static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); 177 static int sysctl_kern_root_partition(SYSCTLFN_PROTO); 178 static int sysctl_kern_drivers(SYSCTLFN_PROTO); 179 static int sysctl_kern_file2(SYSCTLFN_PROTO); 180 static int sysctl_security_setidcore(SYSCTLFN_PROTO); 181 static int sysctl_security_setidcorename(SYSCTLFN_PROTO); 182 static int sysctl_kern_cpid(SYSCTLFN_PROTO); 183 static int sysctl_doeproc(SYSCTLFN_PROTO); 184 static int sysctl_kern_proc_args(SYSCTLFN_PROTO); 185 static int sysctl_hw_usermem(SYSCTLFN_PROTO); 186 static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); 187 188 static u_int sysctl_map_flags(const u_int *, u_int); 189 static void fill_kproc2(struct proc *, struct kinfo_proc2 *, bool); 190 static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); 191 static void fill_file(struct kinfo_file *, const file_t *, const fdfile_t *, 192 int, pid_t); 193 194 /* 195 * ******************************************************************** 196 * section 1: setup routines 197 * ******************************************************************** 198 * These functions are stuffed into a link set for sysctl setup 199 * functions. They're never called or referenced from anywhere else. 200 * ******************************************************************** 201 */ 202 203 /* 204 * sets up the base nodes... 205 */ 206 SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup") 207 { 208 209 sysctl_createv(clog, 0, NULL, NULL, 210 CTLFLAG_PERMANENT, 211 CTLTYPE_NODE, "kern", 212 SYSCTL_DESCR("High kernel"), 213 NULL, 0, NULL, 0, 214 CTL_KERN, CTL_EOL); 215 sysctl_createv(clog, 0, NULL, NULL, 216 CTLFLAG_PERMANENT, 217 CTLTYPE_NODE, "vm", 218 SYSCTL_DESCR("Virtual memory"), 219 NULL, 0, NULL, 0, 220 CTL_VM, CTL_EOL); 221 sysctl_createv(clog, 0, NULL, NULL, 222 CTLFLAG_PERMANENT, 223 CTLTYPE_NODE, "vfs", 224 SYSCTL_DESCR("Filesystem"), 225 NULL, 0, NULL, 0, 226 CTL_VFS, CTL_EOL); 227 sysctl_createv(clog, 0, NULL, NULL, 228 CTLFLAG_PERMANENT, 229 CTLTYPE_NODE, "net", 230 SYSCTL_DESCR("Networking"), 231 NULL, 0, NULL, 0, 232 CTL_NET, CTL_EOL); 233 sysctl_createv(clog, 0, NULL, NULL, 234 CTLFLAG_PERMANENT, 235 CTLTYPE_NODE, "debug", 236 SYSCTL_DESCR("Debugging"), 237 NULL, 0, NULL, 0, 238 CTL_DEBUG, CTL_EOL); 239 sysctl_createv(clog, 0, NULL, NULL, 240 CTLFLAG_PERMANENT, 241 CTLTYPE_NODE, "hw", 242 SYSCTL_DESCR("Generic CPU, I/O"), 243 NULL, 0, NULL, 0, 244 CTL_HW, CTL_EOL); 245 sysctl_createv(clog, 0, NULL, NULL, 246 CTLFLAG_PERMANENT, 247 CTLTYPE_NODE, "machdep", 248 SYSCTL_DESCR("Machine dependent"), 249 NULL, 0, NULL, 0, 250 CTL_MACHDEP, CTL_EOL); 251 /* 252 * this node is inserted so that the sysctl nodes in libc can 253 * operate. 254 */ 255 sysctl_createv(clog, 0, NULL, NULL, 256 CTLFLAG_PERMANENT, 257 CTLTYPE_NODE, "user", 258 SYSCTL_DESCR("User-level"), 259 NULL, 0, NULL, 0, 260 CTL_USER, CTL_EOL); 261 sysctl_createv(clog, 0, NULL, NULL, 262 CTLFLAG_PERMANENT, 263 CTLTYPE_NODE, "ddb", 264 SYSCTL_DESCR("In-kernel debugger"), 265 NULL, 0, NULL, 0, 266 CTL_DDB, CTL_EOL); 267 sysctl_createv(clog, 0, NULL, NULL, 268 CTLFLAG_PERMANENT, 269 CTLTYPE_NODE, "proc", 270 SYSCTL_DESCR("Per-process"), 271 NULL, 0, NULL, 0, 272 CTL_PROC, CTL_EOL); 273 sysctl_createv(clog, 0, NULL, NULL, 274 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 275 CTLTYPE_NODE, "vendor", 276 SYSCTL_DESCR("Vendor specific"), 277 NULL, 0, NULL, 0, 278 CTL_VENDOR, CTL_EOL); 279 sysctl_createv(clog, 0, NULL, NULL, 280 CTLFLAG_PERMANENT, 281 CTLTYPE_NODE, "emul", 282 SYSCTL_DESCR("Emulation settings"), 283 NULL, 0, NULL, 0, 284 CTL_EMUL, CTL_EOL); 285 sysctl_createv(clog, 0, NULL, NULL, 286 CTLFLAG_PERMANENT, 287 CTLTYPE_NODE, "security", 288 SYSCTL_DESCR("Security"), 289 NULL, 0, NULL, 0, 290 CTL_SECURITY, CTL_EOL); 291 } 292 293 /* 294 * this setup routine is a replacement for kern_sysctl() 295 */ 296 SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup") 297 { 298 extern int kern_logsigexit; /* defined in kern/kern_sig.c */ 299 extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ 300 extern int dumponpanic; /* defined in kern/subr_prf.c */ 301 const struct sysctlnode *rnode; 302 303 sysctl_createv(clog, 0, NULL, NULL, 304 CTLFLAG_PERMANENT, 305 CTLTYPE_NODE, "kern", NULL, 306 NULL, 0, NULL, 0, 307 CTL_KERN, CTL_EOL); 308 309 sysctl_createv(clog, 0, NULL, NULL, 310 CTLFLAG_PERMANENT, 311 CTLTYPE_STRING, "ostype", 312 SYSCTL_DESCR("Operating system type"), 313 NULL, 0, &ostype, 0, 314 CTL_KERN, KERN_OSTYPE, CTL_EOL); 315 sysctl_createv(clog, 0, NULL, NULL, 316 CTLFLAG_PERMANENT, 317 CTLTYPE_STRING, "osrelease", 318 SYSCTL_DESCR("Operating system release"), 319 NULL, 0, &osrelease, 0, 320 CTL_KERN, KERN_OSRELEASE, CTL_EOL); 321 sysctl_createv(clog, 0, NULL, NULL, 322 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 323 CTLTYPE_INT, "osrevision", 324 SYSCTL_DESCR("Operating system revision"), 325 NULL, __NetBSD_Version__, NULL, 0, 326 CTL_KERN, KERN_OSREV, CTL_EOL); 327 sysctl_createv(clog, 0, NULL, NULL, 328 CTLFLAG_PERMANENT, 329 CTLTYPE_STRING, "version", 330 SYSCTL_DESCR("Kernel version"), 331 NULL, 0, &version, 0, 332 CTL_KERN, KERN_VERSION, CTL_EOL); 333 sysctl_createv(clog, 0, NULL, NULL, 334 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 335 CTLTYPE_INT, "maxvnodes", 336 SYSCTL_DESCR("Maximum number of vnodes"), 337 sysctl_kern_maxvnodes, 0, NULL, 0, 338 CTL_KERN, KERN_MAXVNODES, CTL_EOL); 339 sysctl_createv(clog, 0, NULL, NULL, 340 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 341 CTLTYPE_INT, "maxproc", 342 SYSCTL_DESCR("Maximum number of simultaneous processes"), 343 sysctl_kern_maxproc, 0, NULL, 0, 344 CTL_KERN, KERN_MAXPROC, CTL_EOL); 345 sysctl_createv(clog, 0, NULL, NULL, 346 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 347 CTLTYPE_INT, "maxfiles", 348 SYSCTL_DESCR("Maximum number of open files"), 349 NULL, 0, &maxfiles, 0, 350 CTL_KERN, KERN_MAXFILES, CTL_EOL); 351 sysctl_createv(clog, 0, NULL, NULL, 352 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 353 CTLTYPE_INT, "argmax", 354 SYSCTL_DESCR("Maximum number of bytes of arguments to " 355 "execve(2)"), 356 NULL, ARG_MAX, NULL, 0, 357 CTL_KERN, KERN_ARGMAX, CTL_EOL); 358 sysctl_createv(clog, 0, NULL, NULL, 359 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 360 CTLTYPE_STRING, "hostname", 361 SYSCTL_DESCR("System hostname"), 362 sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN, 363 CTL_KERN, KERN_HOSTNAME, CTL_EOL); 364 sysctl_createv(clog, 0, NULL, NULL, 365 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 366 CTLTYPE_INT, "hostid", 367 SYSCTL_DESCR("System host ID number"), 368 sysctl_kern_hostid, 0, NULL, 0, 369 CTL_KERN, KERN_HOSTID, CTL_EOL); 370 sysctl_createv(clog, 0, NULL, NULL, 371 CTLFLAG_PERMANENT, 372 CTLTYPE_STRUCT, "clockrate", 373 SYSCTL_DESCR("Kernel clock rates"), 374 sysctl_kern_clockrate, 0, NULL, 375 sizeof(struct clockinfo), 376 CTL_KERN, KERN_CLOCKRATE, CTL_EOL); 377 sysctl_createv(clog, 0, NULL, NULL, 378 CTLFLAG_PERMANENT, 379 CTLTYPE_INT, "hardclock_ticks", 380 SYSCTL_DESCR("Number of hardclock ticks"), 381 NULL, 0, &hardclock_ticks, sizeof(hardclock_ticks), 382 CTL_KERN, KERN_HARDCLOCK_TICKS, CTL_EOL); 383 sysctl_createv(clog, 0, NULL, NULL, 384 CTLFLAG_PERMANENT, 385 CTLTYPE_STRUCT, "vnode", 386 SYSCTL_DESCR("System vnode table"), 387 sysctl_kern_vnode, 0, NULL, 0, 388 CTL_KERN, KERN_VNODE, CTL_EOL); 389 sysctl_createv(clog, 0, NULL, NULL, 390 CTLFLAG_PERMANENT, 391 CTLTYPE_STRUCT, "file", 392 SYSCTL_DESCR("System open file table"), 393 sysctl_kern_file, 0, NULL, 0, 394 CTL_KERN, KERN_FILE, CTL_EOL); 395 #ifndef GPROF 396 sysctl_createv(clog, 0, NULL, NULL, 397 CTLFLAG_PERMANENT, 398 CTLTYPE_NODE, "profiling", 399 SYSCTL_DESCR("Profiling information (not available)"), 400 sysctl_notavail, 0, NULL, 0, 401 CTL_KERN, KERN_PROF, CTL_EOL); 402 #endif 403 sysctl_createv(clog, 0, NULL, NULL, 404 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 405 CTLTYPE_INT, "posix1version", 406 SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " 407 "with which the operating system attempts " 408 "to comply"), 409 NULL, _POSIX_VERSION, NULL, 0, 410 CTL_KERN, KERN_POSIX1, CTL_EOL); 411 sysctl_createv(clog, 0, NULL, NULL, 412 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 413 CTLTYPE_INT, "ngroups", 414 SYSCTL_DESCR("Maximum number of supplemental groups"), 415 NULL, NGROUPS_MAX, NULL, 0, 416 CTL_KERN, KERN_NGROUPS, CTL_EOL); 417 sysctl_createv(clog, 0, NULL, NULL, 418 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 419 CTLTYPE_INT, "job_control", 420 SYSCTL_DESCR("Whether job control is available"), 421 NULL, 1, NULL, 0, 422 CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); 423 sysctl_createv(clog, 0, NULL, NULL, 424 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 425 CTLTYPE_INT, "saved_ids", 426 SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " 427 "available"), NULL, 428 #ifdef _POSIX_SAVED_IDS 429 1, 430 #else /* _POSIX_SAVED_IDS */ 431 0, 432 #endif /* _POSIX_SAVED_IDS */ 433 NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); 434 sysctl_createv(clog, 0, NULL, NULL, 435 CTLFLAG_PERMANENT, 436 CTLTYPE_STRUCT, "boottime", 437 SYSCTL_DESCR("System boot time"), 438 NULL, 0, &boottime, sizeof(boottime), 439 CTL_KERN, KERN_BOOTTIME, CTL_EOL); 440 sysctl_createv(clog, 0, NULL, NULL, 441 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 442 CTLTYPE_STRING, "domainname", 443 SYSCTL_DESCR("YP domain name"), 444 sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN, 445 CTL_KERN, KERN_DOMAINNAME, CTL_EOL); 446 sysctl_createv(clog, 0, NULL, NULL, 447 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 448 CTLTYPE_INT, "maxpartitions", 449 SYSCTL_DESCR("Maximum number of partitions allowed per " 450 "disk"), 451 NULL, MAXPARTITIONS, NULL, 0, 452 CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); 453 sysctl_createv(clog, 0, NULL, NULL, 454 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 455 CTLTYPE_INT, "rawpartition", 456 SYSCTL_DESCR("Raw partition of a disk"), 457 NULL, RAW_PART, NULL, 0, 458 CTL_KERN, KERN_RAWPARTITION, CTL_EOL); 459 sysctl_createv(clog, 0, NULL, NULL, 460 CTLFLAG_PERMANENT, 461 CTLTYPE_STRUCT, "timex", NULL, 462 sysctl_notavail, 0, NULL, 0, 463 CTL_KERN, KERN_TIMEX, CTL_EOL); 464 sysctl_createv(clog, 0, NULL, NULL, 465 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 466 CTLTYPE_INT, "rtc_offset", 467 SYSCTL_DESCR("Offset of real time clock from UTC in " 468 "minutes"), 469 sysctl_kern_rtc_offset, 0, &rtc_offset, 0, 470 CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); 471 sysctl_createv(clog, 0, NULL, NULL, 472 CTLFLAG_PERMANENT, 473 CTLTYPE_STRING, "root_device", 474 SYSCTL_DESCR("Name of the root device"), 475 sysctl_root_device, 0, NULL, 0, 476 CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); 477 sysctl_createv(clog, 0, NULL, NULL, 478 CTLFLAG_PERMANENT, 479 CTLTYPE_INT, "msgbufsize", 480 SYSCTL_DESCR("Size of the kernel message buffer"), 481 sysctl_msgbuf, 0, NULL, 0, 482 CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL); 483 sysctl_createv(clog, 0, NULL, NULL, 484 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 485 CTLTYPE_INT, "fsync", 486 SYSCTL_DESCR("Whether the POSIX 1003.1b File " 487 "Synchronization Option is available on " 488 "this system"), 489 NULL, 1, NULL, 0, 490 CTL_KERN, KERN_FSYNC, CTL_EOL); 491 sysctl_createv(clog, 0, NULL, NULL, 492 CTLFLAG_PERMANENT, 493 CTLTYPE_NODE, "ipc", 494 SYSCTL_DESCR("SysV IPC options"), 495 NULL, 0, NULL, 0, 496 CTL_KERN, KERN_SYSVIPC, CTL_EOL); 497 sysctl_createv(clog, 0, NULL, NULL, 498 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 499 CTLTYPE_INT, "sysvmsg", 500 SYSCTL_DESCR("System V style message support available"), 501 NULL, 502 #ifdef SYSVMSG 503 1, 504 #else /* SYSVMSG */ 505 0, 506 #endif /* SYSVMSG */ 507 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); 508 sysctl_createv(clog, 0, NULL, NULL, 509 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 510 CTLTYPE_INT, "sysvsem", 511 SYSCTL_DESCR("System V style semaphore support " 512 "available"), NULL, 513 #ifdef SYSVSEM 514 1, 515 #else /* SYSVSEM */ 516 0, 517 #endif /* SYSVSEM */ 518 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); 519 sysctl_createv(clog, 0, NULL, NULL, 520 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 521 CTLTYPE_INT, "sysvshm", 522 SYSCTL_DESCR("System V style shared memory support " 523 "available"), NULL, 524 #ifdef SYSVSHM 525 1, 526 #else /* SYSVSHM */ 527 0, 528 #endif /* SYSVSHM */ 529 NULL, 0, CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); 530 sysctl_createv(clog, 0, NULL, NULL, 531 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 532 CTLTYPE_INT, "synchronized_io", 533 SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " 534 "I/O Option is available on this system"), 535 NULL, 1, NULL, 0, 536 CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); 537 sysctl_createv(clog, 0, NULL, NULL, 538 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 539 CTLTYPE_INT, "iov_max", 540 SYSCTL_DESCR("Maximum number of iovec structures per " 541 "process"), 542 NULL, IOV_MAX, NULL, 0, 543 CTL_KERN, KERN_IOV_MAX, CTL_EOL); 544 sysctl_createv(clog, 0, NULL, NULL, 545 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 546 CTLTYPE_INT, "mapped_files", 547 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " 548 "Files Option is available on this system"), 549 NULL, 1, NULL, 0, 550 CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); 551 sysctl_createv(clog, 0, NULL, NULL, 552 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 553 CTLTYPE_INT, "memlock", 554 SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " 555 "Locking Option is available on this " 556 "system"), 557 NULL, 1, NULL, 0, 558 CTL_KERN, KERN_MEMLOCK, CTL_EOL); 559 sysctl_createv(clog, 0, NULL, NULL, 560 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 561 CTLTYPE_INT, "memlock_range", 562 SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " 563 "Locking Option is available on this " 564 "system"), 565 NULL, 1, NULL, 0, 566 CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); 567 sysctl_createv(clog, 0, NULL, NULL, 568 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 569 CTLTYPE_INT, "memory_protection", 570 SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " 571 "Protection Option is available on this " 572 "system"), 573 NULL, 1, NULL, 0, 574 CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); 575 sysctl_createv(clog, 0, NULL, NULL, 576 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 577 CTLTYPE_INT, "login_name_max", 578 SYSCTL_DESCR("Maximum login name length"), 579 NULL, LOGIN_NAME_MAX, NULL, 0, 580 CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); 581 sysctl_createv(clog, 0, NULL, NULL, 582 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 583 CTLTYPE_STRING, "defcorename", 584 SYSCTL_DESCR("Default core file name"), 585 sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, 586 CTL_KERN, KERN_DEFCORENAME, CTL_EOL); 587 sysctl_createv(clog, 0, NULL, NULL, 588 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 589 CTLTYPE_INT, "logsigexit", 590 SYSCTL_DESCR("Log process exit when caused by signals"), 591 NULL, 0, &kern_logsigexit, 0, 592 CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); 593 sysctl_createv(clog, 0, NULL, NULL, 594 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 595 CTLTYPE_INT, "fscale", 596 SYSCTL_DESCR("Kernel fixed-point scale factor"), 597 NULL, FSCALE, NULL, 0, 598 CTL_KERN, KERN_FSCALE, CTL_EOL); 599 sysctl_createv(clog, 0, NULL, NULL, 600 CTLFLAG_PERMANENT, 601 CTLTYPE_INT, "ccpu", 602 SYSCTL_DESCR("Scheduler exponential decay value"), 603 NULL, 0, &ccpu, 0, 604 CTL_KERN, KERN_CCPU, CTL_EOL); 605 sysctl_createv(clog, 0, NULL, NULL, 606 CTLFLAG_PERMANENT, 607 CTLTYPE_STRUCT, "cp_time", 608 SYSCTL_DESCR("Clock ticks spent in different CPU states"), 609 sysctl_kern_cptime, 0, NULL, 0, 610 CTL_KERN, KERN_CP_TIME, CTL_EOL); 611 sysctl_createv(clog, 0, NULL, NULL, 612 CTLFLAG_PERMANENT, 613 CTLTYPE_INT, "msgbuf", 614 SYSCTL_DESCR("Kernel message buffer"), 615 sysctl_msgbuf, 0, NULL, 0, 616 CTL_KERN, KERN_MSGBUF, CTL_EOL); 617 sysctl_createv(clog, 0, NULL, NULL, 618 CTLFLAG_PERMANENT, 619 CTLTYPE_STRUCT, "consdev", 620 SYSCTL_DESCR("Console device"), 621 sysctl_consdev, 0, NULL, sizeof(dev_t), 622 CTL_KERN, KERN_CONSDEV, CTL_EOL); 623 #if NPTY > 0 624 sysctl_createv(clog, 0, NULL, NULL, 625 CTLFLAG_PERMANENT, 626 CTLTYPE_INT, "maxptys", 627 SYSCTL_DESCR("Maximum number of pseudo-ttys"), 628 sysctl_kern_maxptys, 0, NULL, 0, 629 CTL_KERN, KERN_MAXPTYS, CTL_EOL); 630 #endif /* NPTY > 0 */ 631 sysctl_createv(clog, 0, NULL, NULL, 632 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 633 CTLTYPE_INT, "maxphys", 634 SYSCTL_DESCR("Maximum raw I/O transfer size"), 635 NULL, MAXPHYS, NULL, 0, 636 CTL_KERN, KERN_MAXPHYS, CTL_EOL); 637 sysctl_createv(clog, 0, NULL, NULL, 638 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 639 CTLTYPE_INT, "sbmax", 640 SYSCTL_DESCR("Maximum socket buffer size"), 641 sysctl_kern_sbmax, 0, NULL, 0, 642 CTL_KERN, KERN_SBMAX, CTL_EOL); 643 sysctl_createv(clog, 0, NULL, NULL, 644 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 645 CTLTYPE_INT, "monotonic_clock", 646 SYSCTL_DESCR("Implementation version of the POSIX " 647 "1003.1b Monotonic Clock Option"), 648 /* XXX _POSIX_VERSION */ 649 NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, 650 CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); 651 sysctl_createv(clog, 0, NULL, NULL, 652 CTLFLAG_PERMANENT, 653 CTLTYPE_INT, "urandom", 654 SYSCTL_DESCR("Random integer value"), 655 sysctl_kern_urnd, 0, NULL, 0, 656 CTL_KERN, KERN_URND, CTL_EOL); 657 sysctl_createv(clog, 0, NULL, NULL, 658 CTLFLAG_PERMANENT, 659 CTLTYPE_INT, "arandom", 660 SYSCTL_DESCR("n bytes of random data"), 661 sysctl_kern_arnd, 0, NULL, 0, 662 CTL_KERN, KERN_ARND, CTL_EOL); 663 sysctl_createv(clog, 0, NULL, NULL, 664 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 665 CTLTYPE_INT, "labelsector", 666 SYSCTL_DESCR("Sector number containing the disklabel"), 667 NULL, LABELSECTOR, NULL, 0, 668 CTL_KERN, KERN_LABELSECTOR, CTL_EOL); 669 sysctl_createv(clog, 0, NULL, NULL, 670 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 671 CTLTYPE_INT, "labeloffset", 672 SYSCTL_DESCR("Offset of the disklabel within the " 673 "sector"), 674 NULL, LABELOFFSET, NULL, 0, 675 CTL_KERN, KERN_LABELOFFSET, CTL_EOL); 676 sysctl_createv(clog, 0, NULL, NULL, 677 CTLFLAG_PERMANENT, 678 CTLTYPE_NODE, "lwp", 679 SYSCTL_DESCR("System-wide LWP information"), 680 sysctl_kern_lwp, 0, NULL, 0, 681 CTL_KERN, KERN_LWP, CTL_EOL); 682 sysctl_createv(clog, 0, NULL, NULL, 683 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 684 CTLTYPE_INT, "forkfsleep", 685 SYSCTL_DESCR("Milliseconds to sleep on fork failure due " 686 "to process limits"), 687 sysctl_kern_forkfsleep, 0, NULL, 0, 688 CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); 689 sysctl_createv(clog, 0, NULL, NULL, 690 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 691 CTLTYPE_INT, "posix_threads", 692 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 693 "Threads option to which the system " 694 "attempts to conform"), 695 /* XXX _POSIX_VERSION */ 696 NULL, _POSIX_THREADS, NULL, 0, 697 CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); 698 sysctl_createv(clog, 0, NULL, NULL, 699 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 700 CTLTYPE_INT, "posix_semaphores", 701 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 702 "Semaphores option to which the system " 703 "attempts to conform"), NULL, 704 #ifdef P1003_1B_SEMAPHORE 705 200112, 706 #else /* P1003_1B_SEMAPHORE */ 707 0, 708 #endif /* P1003_1B_SEMAPHORE */ 709 NULL, 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); 710 sysctl_createv(clog, 0, NULL, NULL, 711 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 712 CTLTYPE_INT, "posix_barriers", 713 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 714 "Barriers option to which the system " 715 "attempts to conform"), 716 /* XXX _POSIX_VERSION */ 717 NULL, _POSIX_BARRIERS, NULL, 0, 718 CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); 719 sysctl_createv(clog, 0, NULL, NULL, 720 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 721 CTLTYPE_INT, "posix_timers", 722 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 723 "Timers option to which the system " 724 "attempts to conform"), 725 /* XXX _POSIX_VERSION */ 726 NULL, _POSIX_TIMERS, NULL, 0, 727 CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); 728 sysctl_createv(clog, 0, NULL, NULL, 729 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 730 CTLTYPE_INT, "posix_spin_locks", 731 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " 732 "Locks option to which the system attempts " 733 "to conform"), 734 /* XXX _POSIX_VERSION */ 735 NULL, _POSIX_SPIN_LOCKS, NULL, 0, 736 CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); 737 sysctl_createv(clog, 0, NULL, NULL, 738 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 739 CTLTYPE_INT, "posix_reader_writer_locks", 740 SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " 741 "Read-Write Locks option to which the " 742 "system attempts to conform"), 743 /* XXX _POSIX_VERSION */ 744 NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, 745 CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); 746 sysctl_createv(clog, 0, NULL, NULL, 747 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 748 CTLTYPE_INT, "dump_on_panic", 749 SYSCTL_DESCR("Perform a crash dump on system panic"), 750 NULL, 0, &dumponpanic, 0, 751 CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); 752 #ifdef DIAGNOSTIC 753 sysctl_createv(clog, 0, NULL, NULL, 754 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 755 CTLTYPE_INT, "panic_now", 756 SYSCTL_DESCR("Trigger a panic"), 757 sysctl_kern_trigger_panic, 0, NULL, 0, 758 CTL_KERN, CTL_CREATE, CTL_EOL); 759 #endif 760 sysctl_createv(clog, 0, NULL, NULL, 761 CTLFLAG_PERMANENT, 762 CTLTYPE_INT, "root_partition", 763 SYSCTL_DESCR("Root partition on the root device"), 764 sysctl_kern_root_partition, 0, NULL, 0, 765 CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); 766 sysctl_createv(clog, 0, NULL, NULL, 767 CTLFLAG_PERMANENT, 768 CTLTYPE_STRUCT, "drivers", 769 SYSCTL_DESCR("List of all drivers with block and " 770 "character device numbers"), 771 sysctl_kern_drivers, 0, NULL, 0, 772 CTL_KERN, KERN_DRIVERS, CTL_EOL); 773 sysctl_createv(clog, 0, NULL, NULL, 774 CTLFLAG_PERMANENT, 775 CTLTYPE_STRUCT, "file2", 776 SYSCTL_DESCR("System open file table"), 777 sysctl_kern_file2, 0, NULL, 0, 778 CTL_KERN, KERN_FILE2, CTL_EOL); 779 sysctl_createv(clog, 0, NULL, NULL, 780 CTLFLAG_PERMANENT, 781 CTLTYPE_STRUCT, "cp_id", 782 SYSCTL_DESCR("Mapping of CPU number to CPU id"), 783 sysctl_kern_cpid, 0, NULL, 0, 784 CTL_KERN, KERN_CP_ID, CTL_EOL); 785 sysctl_createv(clog, 0, NULL, &rnode, 786 CTLFLAG_PERMANENT, 787 CTLTYPE_NODE, "coredump", 788 SYSCTL_DESCR("Coredump settings."), 789 NULL, 0, NULL, 0, 790 CTL_KERN, CTL_CREATE, CTL_EOL); 791 sysctl_createv(clog, 0, &rnode, &rnode, 792 CTLFLAG_PERMANENT, 793 CTLTYPE_NODE, "setid", 794 SYSCTL_DESCR("Set-id processes' coredump settings."), 795 NULL, 0, NULL, 0, 796 CTL_CREATE, CTL_EOL); 797 sysctl_createv(clog, 0, &rnode, NULL, 798 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 799 CTLTYPE_INT, "dump", 800 SYSCTL_DESCR("Allow set-id processes to dump core."), 801 sysctl_security_setidcore, 0, &security_setidcore_dump, 802 sizeof(security_setidcore_dump), 803 CTL_CREATE, CTL_EOL); 804 sysctl_createv(clog, 0, &rnode, NULL, 805 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 806 CTLTYPE_STRING, "path", 807 SYSCTL_DESCR("Path pattern for set-id coredumps."), 808 sysctl_security_setidcorename, 0, 809 &security_setidcore_path, 810 sizeof(security_setidcore_path), 811 CTL_CREATE, CTL_EOL); 812 sysctl_createv(clog, 0, &rnode, NULL, 813 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 814 CTLTYPE_INT, "owner", 815 SYSCTL_DESCR("Owner id for set-id processes' cores."), 816 sysctl_security_setidcore, 0, &security_setidcore_owner, 817 0, 818 CTL_CREATE, CTL_EOL); 819 sysctl_createv(clog, 0, &rnode, NULL, 820 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 821 CTLTYPE_INT, "group", 822 SYSCTL_DESCR("Group id for set-id processes' cores."), 823 sysctl_security_setidcore, 0, &security_setidcore_group, 824 0, 825 CTL_CREATE, CTL_EOL); 826 sysctl_createv(clog, 0, &rnode, NULL, 827 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 828 CTLTYPE_INT, "mode", 829 SYSCTL_DESCR("Mode for set-id processes' cores."), 830 sysctl_security_setidcore, 0, &security_setidcore_mode, 831 0, 832 CTL_CREATE, CTL_EOL); 833 sysctl_createv(clog, 0, NULL, NULL, 834 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 835 CTLTYPE_INT, "no_sa_support", 836 SYSCTL_DESCR("0 if the kernel supports SA, otherwise it doesn't"), 837 NULL, 1, NULL, 0, 838 CTL_KERN, CTL_CREATE, CTL_EOL); 839 } 840 841 SYSCTL_SETUP(sysctl_kern_proc_setup, 842 "sysctl kern.proc/proc2/proc_args subtree setup") 843 { 844 845 sysctl_createv(clog, 0, NULL, NULL, 846 CTLFLAG_PERMANENT, 847 CTLTYPE_NODE, "kern", NULL, 848 NULL, 0, NULL, 0, 849 CTL_KERN, CTL_EOL); 850 851 sysctl_createv(clog, 0, NULL, NULL, 852 CTLFLAG_PERMANENT, 853 CTLTYPE_NODE, "proc", 854 SYSCTL_DESCR("System-wide process information"), 855 sysctl_doeproc, 0, NULL, 0, 856 CTL_KERN, KERN_PROC, CTL_EOL); 857 sysctl_createv(clog, 0, NULL, NULL, 858 CTLFLAG_PERMANENT, 859 CTLTYPE_NODE, "proc2", 860 SYSCTL_DESCR("Machine-independent process information"), 861 sysctl_doeproc, 0, NULL, 0, 862 CTL_KERN, KERN_PROC2, CTL_EOL); 863 sysctl_createv(clog, 0, NULL, NULL, 864 CTLFLAG_PERMANENT, 865 CTLTYPE_NODE, "proc_args", 866 SYSCTL_DESCR("Process argument information"), 867 sysctl_kern_proc_args, 0, NULL, 0, 868 CTL_KERN, KERN_PROC_ARGS, CTL_EOL); 869 870 /* 871 "nodes" under these: 872 873 KERN_PROC_ALL 874 KERN_PROC_PID pid 875 KERN_PROC_PGRP pgrp 876 KERN_PROC_SESSION sess 877 KERN_PROC_TTY tty 878 KERN_PROC_UID uid 879 KERN_PROC_RUID uid 880 KERN_PROC_GID gid 881 KERN_PROC_RGID gid 882 883 all in all, probably not worth the effort... 884 */ 885 } 886 887 SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup") 888 { 889 u_int u; 890 u_quad_t q; 891 892 sysctl_createv(clog, 0, NULL, NULL, 893 CTLFLAG_PERMANENT, 894 CTLTYPE_NODE, "hw", NULL, 895 NULL, 0, NULL, 0, 896 CTL_HW, CTL_EOL); 897 898 sysctl_createv(clog, 0, NULL, NULL, 899 CTLFLAG_PERMANENT, 900 CTLTYPE_STRING, "machine", 901 SYSCTL_DESCR("Machine class"), 902 NULL, 0, machine, 0, 903 CTL_HW, HW_MACHINE, CTL_EOL); 904 sysctl_createv(clog, 0, NULL, NULL, 905 CTLFLAG_PERMANENT, 906 CTLTYPE_STRING, "model", 907 SYSCTL_DESCR("Machine model"), 908 NULL, 0, cpu_model, 0, 909 CTL_HW, HW_MODEL, CTL_EOL); 910 sysctl_createv(clog, 0, NULL, NULL, 911 CTLFLAG_PERMANENT, 912 CTLTYPE_INT, "ncpu", 913 SYSCTL_DESCR("Number of CPUs configured"), 914 NULL, 0, &ncpu, 0, 915 CTL_HW, HW_NCPU, CTL_EOL); 916 sysctl_createv(clog, 0, NULL, NULL, 917 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 918 CTLTYPE_INT, "byteorder", 919 SYSCTL_DESCR("System byte order"), 920 NULL, BYTE_ORDER, NULL, 0, 921 CTL_HW, HW_BYTEORDER, CTL_EOL); 922 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ? 923 UINT_MAX : physmem * PAGE_SIZE; 924 sysctl_createv(clog, 0, NULL, NULL, 925 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 926 CTLTYPE_INT, "physmem", 927 SYSCTL_DESCR("Bytes of physical memory"), 928 NULL, u, NULL, 0, 929 CTL_HW, HW_PHYSMEM, CTL_EOL); 930 sysctl_createv(clog, 0, NULL, NULL, 931 CTLFLAG_PERMANENT, 932 CTLTYPE_INT, "usermem", 933 SYSCTL_DESCR("Bytes of non-kernel memory"), 934 sysctl_hw_usermem, 0, NULL, 0, 935 CTL_HW, HW_USERMEM, CTL_EOL); 936 sysctl_createv(clog, 0, NULL, NULL, 937 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 938 CTLTYPE_INT, "pagesize", 939 SYSCTL_DESCR("Software page size"), 940 NULL, PAGE_SIZE, NULL, 0, 941 CTL_HW, HW_PAGESIZE, CTL_EOL); 942 sysctl_createv(clog, 0, NULL, NULL, 943 CTLFLAG_PERMANENT, 944 CTLTYPE_STRING, "machine_arch", 945 SYSCTL_DESCR("Machine CPU class"), 946 NULL, 0, machine_arch, 0, 947 CTL_HW, HW_MACHINE_ARCH, CTL_EOL); 948 sysctl_createv(clog, 0, NULL, NULL, 949 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 950 CTLTYPE_INT, "alignbytes", 951 SYSCTL_DESCR("Alignment constraint for all possible " 952 "data types"), 953 NULL, ALIGNBYTES, NULL, 0, 954 CTL_HW, HW_ALIGNBYTES, CTL_EOL); 955 sysctl_createv(clog, 0, NULL, NULL, 956 CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, 957 CTLTYPE_STRING, "cnmagic", 958 SYSCTL_DESCR("Console magic key sequence"), 959 sysctl_hw_cnmagic, 0, NULL, CNS_LEN, 960 CTL_HW, HW_CNMAGIC, CTL_EOL); 961 q = (u_quad_t)physmem * PAGE_SIZE; 962 sysctl_createv(clog, 0, NULL, NULL, 963 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 964 CTLTYPE_QUAD, "physmem64", 965 SYSCTL_DESCR("Bytes of physical memory"), 966 NULL, q, NULL, 0, 967 CTL_HW, HW_PHYSMEM64, CTL_EOL); 968 sysctl_createv(clog, 0, NULL, NULL, 969 CTLFLAG_PERMANENT, 970 CTLTYPE_QUAD, "usermem64", 971 SYSCTL_DESCR("Bytes of non-kernel memory"), 972 sysctl_hw_usermem, 0, NULL, 0, 973 CTL_HW, HW_USERMEM64, CTL_EOL); 974 sysctl_createv(clog, 0, NULL, NULL, 975 CTLFLAG_PERMANENT, 976 CTLTYPE_INT, "ncpuonline", 977 SYSCTL_DESCR("Number of CPUs online"), 978 NULL, 0, &ncpuonline, 0, 979 CTL_HW, HW_NCPUONLINE, CTL_EOL); 980 } 981 982 #ifdef DEBUG 983 /* 984 * Debugging related system variables. 985 */ 986 struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; 987 struct ctldebug debug5, debug6, debug7, debug8, debug9; 988 struct ctldebug debug10, debug11, debug12, debug13, debug14; 989 struct ctldebug debug15, debug16, debug17, debug18, debug19; 990 static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { 991 &debug0, &debug1, &debug2, &debug3, &debug4, 992 &debug5, &debug6, &debug7, &debug8, &debug9, 993 &debug10, &debug11, &debug12, &debug13, &debug14, 994 &debug15, &debug16, &debug17, &debug18, &debug19, 995 }; 996 997 /* 998 * this setup routine is a replacement for debug_sysctl() 999 * 1000 * note that it creates several nodes per defined debug variable 1001 */ 1002 SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup") 1003 { 1004 struct ctldebug *cdp; 1005 char nodename[20]; 1006 int i; 1007 1008 /* 1009 * two ways here: 1010 * 1011 * the "old" way (debug.name -> value) which was emulated by 1012 * the sysctl(8) binary 1013 * 1014 * the new way, which the sysctl(8) binary was actually using 1015 1016 node debug 1017 node debug.0 1018 string debug.0.name 1019 int debug.0.value 1020 int debug.name 1021 1022 */ 1023 1024 sysctl_createv(clog, 0, NULL, NULL, 1025 CTLFLAG_PERMANENT, 1026 CTLTYPE_NODE, "debug", NULL, 1027 NULL, 0, NULL, 0, 1028 CTL_DEBUG, CTL_EOL); 1029 1030 for (i = 0; i < CTL_DEBUG_MAXID; i++) { 1031 cdp = debugvars[i]; 1032 if (cdp->debugname == NULL || cdp->debugvar == NULL) 1033 continue; 1034 1035 snprintf(nodename, sizeof(nodename), "debug%d", i); 1036 sysctl_createv(clog, 0, NULL, NULL, 1037 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1038 CTLTYPE_NODE, nodename, NULL, 1039 NULL, 0, NULL, 0, 1040 CTL_DEBUG, i, CTL_EOL); 1041 sysctl_createv(clog, 0, NULL, NULL, 1042 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1043 CTLTYPE_STRING, "name", NULL, 1044 /*XXXUNCONST*/ 1045 NULL, 0, __UNCONST(cdp->debugname), 0, 1046 CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); 1047 sysctl_createv(clog, 0, NULL, NULL, 1048 CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, 1049 CTLTYPE_INT, "value", NULL, 1050 NULL, 0, cdp->debugvar, 0, 1051 CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); 1052 sysctl_createv(clog, 0, NULL, NULL, 1053 CTLFLAG_PERMANENT, 1054 CTLTYPE_INT, cdp->debugname, NULL, 1055 NULL, 0, cdp->debugvar, 0, 1056 CTL_DEBUG, CTL_CREATE, CTL_EOL); 1057 } 1058 } 1059 #endif /* DEBUG */ 1060 1061 /* 1062 * ******************************************************************** 1063 * section 2: private node-specific helper routines. 1064 * ******************************************************************** 1065 */ 1066 1067 #ifdef DIAGNOSTIC 1068 static int 1069 sysctl_kern_trigger_panic(SYSCTLFN_ARGS) 1070 { 1071 int newtrig, error; 1072 struct sysctlnode node; 1073 1074 newtrig = 0; 1075 node = *rnode; 1076 node.sysctl_data = &newtrig; 1077 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1078 if (error || newp == NULL) 1079 return (error); 1080 1081 if (newtrig != 0) 1082 panic("Panic triggered"); 1083 1084 return (error); 1085 } 1086 #endif 1087 1088 /* 1089 * sysctl helper routine for kern.maxvnodes. Drain vnodes if 1090 * new value is lower than desiredvnodes and then calls reinit 1091 * routines that needs to adjust to the new value. 1092 */ 1093 static int 1094 sysctl_kern_maxvnodes(SYSCTLFN_ARGS) 1095 { 1096 int error, new_vnodes, old_vnodes, new_max; 1097 struct sysctlnode node; 1098 1099 new_vnodes = desiredvnodes; 1100 node = *rnode; 1101 node.sysctl_data = &new_vnodes; 1102 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1103 if (error || newp == NULL) 1104 return (error); 1105 1106 /* Limits: 75% of KVA and physical memory. */ 1107 new_max = calc_cache_size(kernel_map, 75, 75) / VNODE_COST; 1108 if (new_vnodes > new_max) 1109 new_vnodes = new_max; 1110 1111 old_vnodes = desiredvnodes; 1112 desiredvnodes = new_vnodes; 1113 if (new_vnodes < old_vnodes) { 1114 error = vfs_drainvnodes(new_vnodes, l); 1115 if (error) { 1116 desiredvnodes = old_vnodes; 1117 return (error); 1118 } 1119 } 1120 vfs_reinit(); 1121 nchreinit(); 1122 1123 return (0); 1124 } 1125 1126 /* 1127 * sysctl helper routine for rtc_offset - set time after changes 1128 */ 1129 static int 1130 sysctl_kern_rtc_offset(SYSCTLFN_ARGS) 1131 { 1132 struct timespec ts, delta; 1133 int error, new_rtc_offset; 1134 struct sysctlnode node; 1135 1136 new_rtc_offset = rtc_offset; 1137 node = *rnode; 1138 node.sysctl_data = &new_rtc_offset; 1139 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1140 if (error || newp == NULL) 1141 return (error); 1142 1143 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, 1144 KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, 1145 KAUTH_ARG(new_rtc_offset), NULL, NULL)) 1146 return (EPERM); 1147 if (rtc_offset == new_rtc_offset) 1148 return (0); 1149 1150 /* if we change the offset, adjust the time */ 1151 nanotime(&ts); 1152 delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); 1153 delta.tv_nsec = 0; 1154 timespecadd(&ts, &delta, &ts); 1155 rtc_offset = new_rtc_offset; 1156 return (settime(l->l_proc, &ts)); 1157 } 1158 1159 /* 1160 * sysctl helper routine for kern.maxproc. Ensures that the new 1161 * values are not too low or too high. 1162 */ 1163 static int 1164 sysctl_kern_maxproc(SYSCTLFN_ARGS) 1165 { 1166 int error, nmaxproc; 1167 struct sysctlnode node; 1168 1169 nmaxproc = maxproc; 1170 node = *rnode; 1171 node.sysctl_data = &nmaxproc; 1172 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1173 if (error || newp == NULL) 1174 return (error); 1175 1176 if (nmaxproc < 0 || nmaxproc >= PID_MAX) 1177 return (EINVAL); 1178 #ifdef __HAVE_CPU_MAXPROC 1179 if (nmaxproc > cpu_maxproc()) 1180 return (EINVAL); 1181 #endif 1182 maxproc = nmaxproc; 1183 1184 return (0); 1185 } 1186 1187 /* 1188 * sysctl helper function for kern.hostid. The hostid is a long, but 1189 * we export it as an int, so we need to give it a little help. 1190 */ 1191 static int 1192 sysctl_kern_hostid(SYSCTLFN_ARGS) 1193 { 1194 int error, inthostid; 1195 struct sysctlnode node; 1196 1197 inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ 1198 node = *rnode; 1199 node.sysctl_data = &inthostid; 1200 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1201 if (error || newp == NULL) 1202 return (error); 1203 1204 hostid = (unsigned)inthostid; 1205 1206 return (0); 1207 } 1208 1209 /* 1210 * sysctl helper function for kern.hostname and kern.domainnname. 1211 * resets the relevant recorded length when the underlying name is 1212 * changed. 1213 */ 1214 static int 1215 sysctl_setlen(SYSCTLFN_ARGS) 1216 { 1217 int error; 1218 1219 error = sysctl_lookup(SYSCTLFN_CALL(rnode)); 1220 if (error || newp == NULL) 1221 return (error); 1222 1223 switch (rnode->sysctl_num) { 1224 case KERN_HOSTNAME: 1225 hostnamelen = strlen((const char*)rnode->sysctl_data); 1226 break; 1227 case KERN_DOMAINNAME: 1228 domainnamelen = strlen((const char*)rnode->sysctl_data); 1229 break; 1230 } 1231 1232 return (0); 1233 } 1234 1235 /* 1236 * sysctl helper routine for kern.clockrate. Assembles a struct on 1237 * the fly to be returned to the caller. 1238 */ 1239 static int 1240 sysctl_kern_clockrate(SYSCTLFN_ARGS) 1241 { 1242 struct clockinfo clkinfo; 1243 struct sysctlnode node; 1244 1245 clkinfo.tick = tick; 1246 clkinfo.tickadj = tickadj; 1247 clkinfo.hz = hz; 1248 clkinfo.profhz = profhz; 1249 clkinfo.stathz = stathz ? stathz : hz; 1250 1251 node = *rnode; 1252 node.sysctl_data = &clkinfo; 1253 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1254 } 1255 1256 1257 /* 1258 * sysctl helper routine for kern.file pseudo-subtree. 1259 */ 1260 static int 1261 sysctl_kern_file(SYSCTLFN_ARGS) 1262 { 1263 int error; 1264 size_t buflen; 1265 struct file *fp, *dp, *np, fbuf; 1266 char *start, *where; 1267 1268 start = where = oldp; 1269 buflen = *oldlenp; 1270 dp = NULL; 1271 1272 if (where == NULL) { 1273 /* 1274 * overestimate by 10 files 1275 */ 1276 *oldlenp = sizeof(filehead) + (nfiles + 10) * 1277 sizeof(struct file); 1278 return (0); 1279 } 1280 1281 /* 1282 * first dcopyout filehead 1283 */ 1284 if (buflen < sizeof(filehead)) { 1285 *oldlenp = 0; 1286 return (0); 1287 } 1288 sysctl_unlock(); 1289 error = dcopyout(l, &filehead, where, sizeof(filehead)); 1290 if (error) { 1291 sysctl_relock(); 1292 return error; 1293 } 1294 buflen -= sizeof(filehead); 1295 where += sizeof(filehead); 1296 1297 /* 1298 * allocate dummy file descriptor to make position in list 1299 */ 1300 if ((dp = fgetdummy()) == NULL) { 1301 sysctl_relock(); 1302 return ENOMEM; 1303 } 1304 1305 /* 1306 * followed by an array of file structures 1307 */ 1308 mutex_enter(&filelist_lock); 1309 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1310 np = LIST_NEXT(fp, f_list); 1311 mutex_enter(&fp->f_lock); 1312 if (fp->f_count == 0) { 1313 mutex_exit(&fp->f_lock); 1314 continue; 1315 } 1316 /* 1317 * XXX Need to prevent that from being an alternative way 1318 * XXX to getting process information. 1319 */ 1320 if (kauth_authorize_generic(l->l_cred, 1321 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 1322 mutex_exit(&fp->f_lock); 1323 continue; 1324 } 1325 if (buflen < sizeof(struct file)) { 1326 *oldlenp = where - start; 1327 mutex_exit(&fp->f_lock); 1328 error = ENOMEM; 1329 break; 1330 } 1331 memcpy(&fbuf, fp, sizeof(fbuf)); 1332 LIST_INSERT_AFTER(fp, dp, f_list); 1333 mutex_exit(&fp->f_lock); 1334 mutex_exit(&filelist_lock); 1335 error = dcopyout(l, &fbuf, where, sizeof(fbuf)); 1336 if (error) { 1337 mutex_enter(&filelist_lock); 1338 LIST_REMOVE(dp, f_list); 1339 break; 1340 } 1341 buflen -= sizeof(struct file); 1342 where += sizeof(struct file); 1343 mutex_enter(&filelist_lock); 1344 np = LIST_NEXT(dp, f_list); 1345 LIST_REMOVE(dp, f_list); 1346 } 1347 mutex_exit(&filelist_lock); 1348 *oldlenp = where - start; 1349 if (dp != NULL) 1350 fputdummy(dp); 1351 sysctl_relock(); 1352 return (error); 1353 } 1354 1355 /* 1356 * sysctl helper routine for kern.msgbufsize and kern.msgbuf. For the 1357 * former it merely checks the message buffer is set up. For the latter, 1358 * it also copies out the data if necessary. 1359 */ 1360 static int 1361 sysctl_msgbuf(SYSCTLFN_ARGS) 1362 { 1363 char *where = oldp; 1364 size_t len, maxlen; 1365 long beg, end; 1366 extern kmutex_t log_lock; 1367 int error; 1368 1369 if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) { 1370 msgbufenabled = 0; 1371 return (ENXIO); 1372 } 1373 1374 switch (rnode->sysctl_num) { 1375 case KERN_MSGBUFSIZE: { 1376 struct sysctlnode node = *rnode; 1377 int msg_bufs = (int)msgbufp->msg_bufs; 1378 node.sysctl_data = &msg_bufs; 1379 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1380 } 1381 case KERN_MSGBUF: 1382 break; 1383 default: 1384 return (EOPNOTSUPP); 1385 } 1386 1387 if (newp != NULL) 1388 return (EPERM); 1389 1390 if (oldp == NULL) { 1391 /* always return full buffer size */ 1392 *oldlenp = msgbufp->msg_bufs; 1393 return (0); 1394 } 1395 1396 sysctl_unlock(); 1397 1398 /* 1399 * First, copy from the write pointer to the end of 1400 * message buffer. 1401 */ 1402 error = 0; 1403 mutex_spin_enter(&log_lock); 1404 maxlen = MIN(msgbufp->msg_bufs, *oldlenp); 1405 beg = msgbufp->msg_bufx; 1406 end = msgbufp->msg_bufs; 1407 mutex_spin_exit(&log_lock); 1408 1409 while (maxlen > 0) { 1410 len = MIN(end - beg, maxlen); 1411 if (len == 0) 1412 break; 1413 /* XXX unlocked, but hardly matters. */ 1414 error = dcopyout(l, &msgbufp->msg_bufc[beg], where, len); 1415 if (error) 1416 break; 1417 where += len; 1418 maxlen -= len; 1419 1420 /* 1421 * ... then, copy from the beginning of message buffer to 1422 * the write pointer. 1423 */ 1424 beg = 0; 1425 end = msgbufp->msg_bufx; 1426 } 1427 1428 sysctl_relock(); 1429 return (error); 1430 } 1431 1432 /* 1433 * sysctl helper routine for kern.defcorename. In the case of a new 1434 * string being assigned, check that it's not a zero-length string. 1435 * (XXX the check in -current doesn't work, but do we really care?) 1436 */ 1437 static int 1438 sysctl_kern_defcorename(SYSCTLFN_ARGS) 1439 { 1440 int error; 1441 char *newcorename; 1442 struct sysctlnode node; 1443 1444 newcorename = PNBUF_GET(); 1445 node = *rnode; 1446 node.sysctl_data = &newcorename[0]; 1447 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 1448 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1449 if (error || newp == NULL) { 1450 goto done; 1451 } 1452 1453 /* 1454 * when sysctl_lookup() deals with a string, it's guaranteed 1455 * to come back nul terminated. So there. :) 1456 */ 1457 if (strlen(newcorename) == 0) { 1458 error = EINVAL; 1459 } else { 1460 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 1461 error = 0; 1462 } 1463 done: 1464 PNBUF_PUT(newcorename); 1465 return error; 1466 } 1467 1468 /* 1469 * sysctl helper routine for kern.cp_time node. Adds up cpu time 1470 * across all cpus. 1471 */ 1472 static int 1473 sysctl_kern_cptime(SYSCTLFN_ARGS) 1474 { 1475 struct sysctlnode node = *rnode; 1476 uint64_t *cp_time = NULL; 1477 int error, n = ncpu, i; 1478 struct cpu_info *ci; 1479 CPU_INFO_ITERATOR cii; 1480 1481 /* 1482 * if you specifically pass a buffer that is the size of the 1483 * sum, or if you are probing for the size, you get the "sum" 1484 * of cp_time (and the size thereof) across all processors. 1485 * 1486 * alternately, you can pass an additional mib number and get 1487 * cp_time for that particular processor. 1488 */ 1489 switch (namelen) { 1490 case 0: 1491 if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { 1492 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1493 n = -1; /* SUM */ 1494 } 1495 else { 1496 node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; 1497 n = -2; /* ALL */ 1498 } 1499 break; 1500 case 1: 1501 if (name[0] < 0 || name[0] >= n) 1502 return (ENOENT); /* ENOSUCHPROCESSOR */ 1503 node.sysctl_size = sizeof(uint64_t) * CPUSTATES; 1504 n = name[0]; 1505 /* 1506 * adjust these so that sysctl_lookup() will be happy 1507 */ 1508 name++; 1509 namelen--; 1510 break; 1511 default: 1512 return (EINVAL); 1513 } 1514 1515 cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); 1516 if (cp_time == NULL) 1517 return (ENOMEM); 1518 node.sysctl_data = cp_time; 1519 memset(cp_time, 0, node.sysctl_size); 1520 1521 for (CPU_INFO_FOREACH(cii, ci)) { 1522 if (n <= 0) { 1523 for (i = 0; i < CPUSTATES; i++) { 1524 cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; 1525 } 1526 } 1527 /* 1528 * if a specific processor was requested and we just 1529 * did it, we're done here 1530 */ 1531 if (n == 0) 1532 break; 1533 /* 1534 * if doing "all", skip to next cp_time set for next processor 1535 */ 1536 if (n == -2) 1537 cp_time += CPUSTATES; 1538 /* 1539 * if we're doing a specific processor, we're one 1540 * processor closer 1541 */ 1542 if (n > 0) 1543 n--; 1544 } 1545 1546 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1547 kmem_free(node.sysctl_data, node.sysctl_size); 1548 return (error); 1549 } 1550 1551 #if NPTY > 0 1552 /* 1553 * sysctl helper routine for kern.maxptys. Ensures that any new value 1554 * is acceptable to the pty subsystem. 1555 */ 1556 static int 1557 sysctl_kern_maxptys(SYSCTLFN_ARGS) 1558 { 1559 int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ 1560 int error, xmax; 1561 struct sysctlnode node; 1562 1563 /* get current value of maxptys */ 1564 xmax = pty_maxptys(0, 0); 1565 1566 node = *rnode; 1567 node.sysctl_data = &xmax; 1568 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1569 if (error || newp == NULL) 1570 return (error); 1571 1572 if (xmax != pty_maxptys(xmax, 1)) 1573 return (EINVAL); 1574 1575 return (0); 1576 } 1577 #endif /* NPTY > 0 */ 1578 1579 /* 1580 * sysctl helper routine for kern.sbmax. Basically just ensures that 1581 * any new value is not too small. 1582 */ 1583 static int 1584 sysctl_kern_sbmax(SYSCTLFN_ARGS) 1585 { 1586 int error, new_sbmax; 1587 struct sysctlnode node; 1588 1589 new_sbmax = sb_max; 1590 node = *rnode; 1591 node.sysctl_data = &new_sbmax; 1592 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1593 if (error || newp == NULL) 1594 return (error); 1595 1596 KERNEL_LOCK(1, NULL); 1597 error = sb_max_set(new_sbmax); 1598 KERNEL_UNLOCK_ONE(NULL); 1599 1600 return (error); 1601 } 1602 1603 /* 1604 * sysctl helper routine for kern.urandom node. Picks a random number 1605 * for you. 1606 */ 1607 static int 1608 sysctl_kern_urnd(SYSCTLFN_ARGS) 1609 { 1610 #if NRND > 0 1611 int v, rv; 1612 1613 KERNEL_LOCK(1, NULL); 1614 rv = rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY); 1615 KERNEL_UNLOCK_ONE(NULL); 1616 if (rv == sizeof(v)) { 1617 struct sysctlnode node = *rnode; 1618 node.sysctl_data = &v; 1619 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1620 } 1621 else 1622 return (EIO); /*XXX*/ 1623 #else 1624 return (EOPNOTSUPP); 1625 #endif 1626 } 1627 1628 /* 1629 * sysctl helper routine for kern.arandom node. Picks a random number 1630 * for you. 1631 */ 1632 static int 1633 sysctl_kern_arnd(SYSCTLFN_ARGS) 1634 { 1635 #if NRND > 0 1636 int error; 1637 void *v; 1638 struct sysctlnode node = *rnode; 1639 1640 if (*oldlenp == 0) 1641 return 0; 1642 if (*oldlenp > 8192) 1643 return E2BIG; 1644 1645 v = kmem_alloc(*oldlenp, KM_SLEEP); 1646 arc4randbytes(v, *oldlenp); 1647 node.sysctl_data = v; 1648 node.sysctl_size = *oldlenp; 1649 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1650 kmem_free(v, *oldlenp); 1651 return error; 1652 #else 1653 return (EOPNOTSUPP); 1654 #endif 1655 } 1656 /* 1657 * sysctl helper routine to do kern.lwp.* work. 1658 */ 1659 static int 1660 sysctl_kern_lwp(SYSCTLFN_ARGS) 1661 { 1662 struct kinfo_lwp klwp; 1663 struct proc *p; 1664 struct lwp *l2, *l3; 1665 char *where, *dp; 1666 int pid, elem_size, elem_count; 1667 int buflen, needed, error; 1668 bool gotit; 1669 1670 if (namelen == 1 && name[0] == CTL_QUERY) 1671 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1672 1673 dp = where = oldp; 1674 buflen = where != NULL ? *oldlenp : 0; 1675 error = needed = 0; 1676 1677 if (newp != NULL || namelen != 3) 1678 return (EINVAL); 1679 pid = name[0]; 1680 elem_size = name[1]; 1681 elem_count = name[2]; 1682 1683 sysctl_unlock(); 1684 if (pid == -1) { 1685 mutex_enter(proc_lock); 1686 LIST_FOREACH(p, &allproc, p_list) { 1687 /* Grab a hold on the process. */ 1688 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 1689 continue; 1690 } 1691 mutex_exit(proc_lock); 1692 1693 mutex_enter(p->p_lock); 1694 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1695 if (buflen >= elem_size && elem_count > 0) { 1696 lwp_lock(l2); 1697 fill_lwp(l2, &klwp); 1698 lwp_unlock(l2); 1699 mutex_exit(p->p_lock); 1700 1701 /* 1702 * Copy out elem_size, but not 1703 * larger than the size of a 1704 * struct kinfo_proc2. 1705 */ 1706 error = dcopyout(l, &klwp, dp, 1707 min(sizeof(klwp), elem_size)); 1708 if (error) { 1709 rw_exit(&p->p_reflock); 1710 goto cleanup; 1711 } 1712 mutex_enter(p->p_lock); 1713 LIST_FOREACH(l3, &p->p_lwps, 1714 l_sibling) { 1715 if (l2 == l3) 1716 break; 1717 } 1718 if (l3 == NULL) { 1719 mutex_exit(p->p_lock); 1720 rw_exit(&p->p_reflock); 1721 error = EAGAIN; 1722 goto cleanup; 1723 } 1724 dp += elem_size; 1725 buflen -= elem_size; 1726 elem_count--; 1727 } 1728 needed += elem_size; 1729 } 1730 mutex_exit(p->p_lock); 1731 1732 /* Drop reference to process. */ 1733 mutex_enter(proc_lock); 1734 rw_exit(&p->p_reflock); 1735 } 1736 mutex_exit(proc_lock); 1737 } else { 1738 mutex_enter(proc_lock); 1739 p = p_find(pid, PFIND_LOCKED); 1740 if (p == NULL) { 1741 error = ESRCH; 1742 mutex_exit(proc_lock); 1743 goto cleanup; 1744 } 1745 /* Grab a hold on the process. */ 1746 gotit = rw_tryenter(&p->p_reflock, RW_READER); 1747 mutex_exit(proc_lock); 1748 if (!gotit) { 1749 error = ESRCH; 1750 goto cleanup; 1751 } 1752 1753 mutex_enter(p->p_lock); 1754 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 1755 if (buflen >= elem_size && elem_count > 0) { 1756 lwp_lock(l2); 1757 fill_lwp(l2, &klwp); 1758 lwp_unlock(l2); 1759 mutex_exit(p->p_lock); 1760 /* 1761 * Copy out elem_size, but not larger than 1762 * the size of a struct kinfo_proc2. 1763 */ 1764 error = dcopyout(l, &klwp, dp, 1765 min(sizeof(klwp), elem_size)); 1766 if (error) { 1767 rw_exit(&p->p_reflock); 1768 goto cleanup; 1769 } 1770 mutex_enter(p->p_lock); 1771 LIST_FOREACH(l3, &p->p_lwps, l_sibling) { 1772 if (l2 == l3) 1773 break; 1774 } 1775 if (l3 == NULL) { 1776 mutex_exit(p->p_lock); 1777 rw_exit(&p->p_reflock); 1778 error = EAGAIN; 1779 goto cleanup; 1780 } 1781 dp += elem_size; 1782 buflen -= elem_size; 1783 elem_count--; 1784 } 1785 needed += elem_size; 1786 } 1787 mutex_exit(p->p_lock); 1788 1789 /* Drop reference to process. */ 1790 rw_exit(&p->p_reflock); 1791 } 1792 1793 if (where != NULL) { 1794 *oldlenp = dp - where; 1795 if (needed > *oldlenp) { 1796 sysctl_relock(); 1797 return (ENOMEM); 1798 } 1799 } else { 1800 needed += KERN_LWPSLOP; 1801 *oldlenp = needed; 1802 } 1803 error = 0; 1804 cleanup: 1805 sysctl_relock(); 1806 return (error); 1807 } 1808 1809 /* 1810 * sysctl helper routine for kern.forkfsleep node. Ensures that the 1811 * given value is not too large or two small, and is at least one 1812 * timer tick if not zero. 1813 */ 1814 static int 1815 sysctl_kern_forkfsleep(SYSCTLFN_ARGS) 1816 { 1817 /* userland sees value in ms, internally is in ticks */ 1818 extern int forkfsleep; /* defined in kern/kern_fork.c */ 1819 int error, timo, lsleep; 1820 struct sysctlnode node; 1821 1822 lsleep = forkfsleep * 1000 / hz; 1823 node = *rnode; 1824 node.sysctl_data = &lsleep; 1825 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1826 if (error || newp == NULL) 1827 return (error); 1828 1829 /* refuse negative values, and overly 'long time' */ 1830 if (lsleep < 0 || lsleep > MAXSLP * 1000) 1831 return (EINVAL); 1832 1833 timo = mstohz(lsleep); 1834 1835 /* if the interval is >0 ms && <1 tick, use 1 tick */ 1836 if (lsleep != 0 && timo == 0) 1837 forkfsleep = 1; 1838 else 1839 forkfsleep = timo; 1840 1841 return (0); 1842 } 1843 1844 /* 1845 * sysctl helper routine for kern.root_partition 1846 */ 1847 static int 1848 sysctl_kern_root_partition(SYSCTLFN_ARGS) 1849 { 1850 int rootpart = DISKPART(rootdev); 1851 struct sysctlnode node = *rnode; 1852 1853 node.sysctl_data = &rootpart; 1854 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 1855 } 1856 1857 /* 1858 * sysctl helper function for kern.drivers 1859 */ 1860 static int 1861 sysctl_kern_drivers(SYSCTLFN_ARGS) 1862 { 1863 int error; 1864 size_t buflen; 1865 struct kinfo_drivers kd; 1866 char *start, *where; 1867 const char *dname; 1868 int i; 1869 extern struct devsw_conv *devsw_conv; 1870 extern int max_devsw_convs; 1871 1872 if (newp != NULL || namelen != 0) 1873 return (EINVAL); 1874 1875 start = where = oldp; 1876 buflen = *oldlenp; 1877 if (where == NULL) { 1878 *oldlenp = max_devsw_convs * sizeof kd; 1879 return 0; 1880 } 1881 1882 /* 1883 * An array of kinfo_drivers structures 1884 */ 1885 error = 0; 1886 sysctl_unlock(); 1887 mutex_enter(&specfs_lock); 1888 for (i = 0; i < max_devsw_convs; i++) { 1889 dname = devsw_conv[i].d_name; 1890 if (dname == NULL) 1891 continue; 1892 if (buflen < sizeof kd) { 1893 error = ENOMEM; 1894 break; 1895 } 1896 memset(&kd, 0, sizeof(kd)); 1897 kd.d_bmajor = devsw_conv[i].d_bmajor; 1898 kd.d_cmajor = devsw_conv[i].d_cmajor; 1899 strlcpy(kd.d_name, dname, sizeof kd.d_name); 1900 mutex_exit(&specfs_lock); 1901 error = dcopyout(l, &kd, where, sizeof kd); 1902 mutex_enter(&specfs_lock); 1903 if (error != 0) 1904 break; 1905 buflen -= sizeof kd; 1906 where += sizeof kd; 1907 } 1908 mutex_exit(&specfs_lock); 1909 sysctl_relock(); 1910 *oldlenp = where - start; 1911 return error; 1912 } 1913 1914 /* 1915 * sysctl helper function for kern.file2 1916 */ 1917 static int 1918 sysctl_kern_file2(SYSCTLFN_ARGS) 1919 { 1920 struct proc *p; 1921 struct file *fp, *tp, *np; 1922 struct filedesc *fd; 1923 struct kinfo_file kf; 1924 char *dp; 1925 u_int i, op; 1926 size_t len, needed, elem_size, out_size; 1927 int error, arg, elem_count; 1928 fdfile_t *ff; 1929 1930 if (namelen == 1 && name[0] == CTL_QUERY) 1931 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1932 1933 if (namelen != 4) 1934 return (EINVAL); 1935 1936 error = 0; 1937 dp = oldp; 1938 len = (oldp != NULL) ? *oldlenp : 0; 1939 op = name[0]; 1940 arg = name[1]; 1941 elem_size = name[2]; 1942 elem_count = name[3]; 1943 out_size = MIN(sizeof(kf), elem_size); 1944 needed = 0; 1945 1946 if (elem_size < 1 || elem_count < 0) 1947 return (EINVAL); 1948 1949 switch (op) { 1950 case KERN_FILE_BYFILE: 1951 /* 1952 * doesn't use arg so it must be zero 1953 */ 1954 if (arg != 0) 1955 return (EINVAL); 1956 sysctl_unlock(); 1957 /* 1958 * allocate dummy file descriptor to make position in list 1959 */ 1960 if ((tp = fgetdummy()) == NULL) { 1961 sysctl_relock(); 1962 return ENOMEM; 1963 } 1964 mutex_enter(&filelist_lock); 1965 for (fp = LIST_FIRST(&filehead); fp != NULL; fp = np) { 1966 np = LIST_NEXT(fp, f_list); 1967 mutex_enter(&fp->f_lock); 1968 if (fp->f_count == 0) { 1969 mutex_exit(&fp->f_lock); 1970 continue; 1971 } 1972 /* 1973 * XXX Need to prevent that from being an alternative 1974 * XXX way for getting process information. 1975 */ 1976 if (kauth_authorize_generic(l->l_cred, 1977 KAUTH_GENERIC_CANSEE, fp->f_cred) != 0) { 1978 mutex_exit(&fp->f_lock); 1979 continue; 1980 } 1981 if (len >= elem_size && elem_count > 0) { 1982 fill_file(&kf, fp, NULL, 0, 0); 1983 LIST_INSERT_AFTER(fp, tp, f_list); 1984 mutex_exit(&fp->f_lock); 1985 mutex_exit(&filelist_lock); 1986 error = dcopyout(l, &kf, dp, out_size); 1987 mutex_enter(&filelist_lock); 1988 np = LIST_NEXT(tp, f_list); 1989 LIST_REMOVE(tp, f_list); 1990 if (error) { 1991 break; 1992 } 1993 dp += elem_size; 1994 len -= elem_size; 1995 } else { 1996 mutex_exit(&fp->f_lock); 1997 } 1998 if (elem_count > 0) { 1999 needed += elem_size; 2000 if (elem_count != INT_MAX) 2001 elem_count--; 2002 } 2003 } 2004 mutex_exit(&filelist_lock); 2005 fputdummy(tp); 2006 sysctl_relock(); 2007 break; 2008 case KERN_FILE_BYPID: 2009 if (arg < -1) 2010 /* -1 means all processes */ 2011 return (EINVAL); 2012 sysctl_unlock(); 2013 mutex_enter(proc_lock); 2014 LIST_FOREACH(p, &allproc, p_list) { 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 continue; 2032 } 2033 2034 /* 2035 * Grab a hold on the process. 2036 */ 2037 if (!rw_tryenter(&p->p_reflock, RW_READER)) { 2038 continue; 2039 } 2040 mutex_exit(proc_lock); 2041 2042 /* XXX Do we need to check permission per file? */ 2043 fd = p->p_fd; 2044 mutex_enter(&fd->fd_lock); 2045 for (i = 0; i < fd->fd_nfiles; i++) { 2046 if ((ff = fd->fd_ofiles[i]) == NULL) { 2047 continue; 2048 } 2049 mutex_enter(&ff->ff_lock); 2050 if ((fp = ff->ff_file) == NULL) { 2051 mutex_exit(&ff->ff_lock); 2052 continue; 2053 } 2054 if (len >= elem_size && elem_count > 0) { 2055 mutex_enter(&fp->f_lock); 2056 fill_file(&kf, fp, ff, i, p->p_pid); 2057 mutex_exit(&fp->f_lock); 2058 mutex_exit(&ff->ff_lock); 2059 mutex_exit(&fd->fd_lock); 2060 error = dcopyout(l, &kf, dp, out_size); 2061 mutex_enter(&fd->fd_lock); 2062 if (error) 2063 break; 2064 dp += elem_size; 2065 len -= elem_size; 2066 } else { 2067 mutex_exit(&ff->ff_lock); 2068 } 2069 if (elem_count > 0) { 2070 needed += elem_size; 2071 if (elem_count != INT_MAX) 2072 elem_count--; 2073 } 2074 } 2075 mutex_exit(&fd->fd_lock); 2076 2077 /* 2078 * Release reference to process. 2079 */ 2080 mutex_enter(proc_lock); 2081 rw_exit(&p->p_reflock); 2082 } 2083 mutex_exit(proc_lock); 2084 sysctl_relock(); 2085 break; 2086 default: 2087 return (EINVAL); 2088 } 2089 2090 if (oldp == NULL) 2091 needed += KERN_FILESLOP * elem_size; 2092 *oldlenp = needed; 2093 2094 return (error); 2095 } 2096 2097 static void 2098 fill_file(struct kinfo_file *kp, const file_t *fp, const fdfile_t *ff, 2099 int i, pid_t pid) 2100 { 2101 2102 memset(kp, 0, sizeof(*kp)); 2103 2104 kp->ki_fileaddr = PTRTOUINT64(fp); 2105 kp->ki_flag = fp->f_flag; 2106 kp->ki_iflags = fp->f_iflags; 2107 kp->ki_ftype = fp->f_type; 2108 kp->ki_count = fp->f_count; 2109 kp->ki_msgcount = fp->f_msgcount; 2110 kp->ki_fucred = PTRTOUINT64(fp->f_cred); 2111 kp->ki_fuid = kauth_cred_geteuid(fp->f_cred); 2112 kp->ki_fgid = kauth_cred_getegid(fp->f_cred); 2113 kp->ki_fops = PTRTOUINT64(fp->f_ops); 2114 kp->ki_foffset = fp->f_offset; 2115 kp->ki_fdata = PTRTOUINT64(fp->f_data); 2116 2117 /* vnode information to glue this file to something */ 2118 if (fp->f_type == DTYPE_VNODE) { 2119 struct vnode *vp = (struct vnode *)fp->f_data; 2120 2121 kp->ki_vun = PTRTOUINT64(vp->v_un.vu_socket); 2122 kp->ki_vsize = vp->v_size; 2123 kp->ki_vtype = vp->v_type; 2124 kp->ki_vtag = vp->v_tag; 2125 kp->ki_vdata = PTRTOUINT64(vp->v_data); 2126 } 2127 2128 /* process information when retrieved via KERN_FILE_BYPID */ 2129 if (ff != NULL) { 2130 kp->ki_pid = pid; 2131 kp->ki_fd = i; 2132 kp->ki_ofileflags = ff->ff_exclose; 2133 kp->ki_usecount = ff->ff_refcnt; 2134 } 2135 } 2136 2137 static int 2138 sysctl_doeproc(SYSCTLFN_ARGS) 2139 { 2140 struct eproc *eproc; 2141 struct kinfo_proc2 *kproc2; 2142 struct kinfo_proc *dp; 2143 struct proc *p, *next, *marker; 2144 char *where, *dp2; 2145 int type, op, arg, error; 2146 u_int elem_size, elem_count; 2147 size_t buflen, needed; 2148 bool match, zombie, mmmbrains; 2149 2150 if (namelen == 1 && name[0] == CTL_QUERY) 2151 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2152 2153 dp = oldp; 2154 dp2 = where = oldp; 2155 buflen = where != NULL ? *oldlenp : 0; 2156 error = 0; 2157 needed = 0; 2158 type = rnode->sysctl_num; 2159 2160 if (type == KERN_PROC) { 2161 if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL)) 2162 return (EINVAL); 2163 op = name[0]; 2164 if (op != KERN_PROC_ALL) 2165 arg = name[1]; 2166 else 2167 arg = 0; /* Quell compiler warning */ 2168 elem_size = elem_count = 0; /* Ditto */ 2169 } else { 2170 if (namelen != 4) 2171 return (EINVAL); 2172 op = name[0]; 2173 arg = name[1]; 2174 elem_size = name[2]; 2175 elem_count = name[3]; 2176 } 2177 2178 sysctl_unlock(); 2179 2180 if (type == KERN_PROC) { 2181 eproc = kmem_alloc(sizeof(*eproc), KM_SLEEP); 2182 kproc2 = NULL; 2183 } else { 2184 eproc = NULL; 2185 kproc2 = kmem_alloc(sizeof(*kproc2), KM_SLEEP); 2186 } 2187 marker = kmem_alloc(sizeof(*marker), KM_SLEEP); 2188 2189 mutex_enter(proc_lock); 2190 mmmbrains = false; 2191 for (p = LIST_FIRST(&allproc);; p = next) { 2192 if (p == NULL) { 2193 if (!mmmbrains) { 2194 p = LIST_FIRST(&zombproc); 2195 mmmbrains = true; 2196 } 2197 if (p == NULL) 2198 break; 2199 } 2200 next = LIST_NEXT(p, p_list); 2201 2202 /* 2203 * Skip embryonic processes. 2204 */ 2205 if (p->p_stat == SIDL) 2206 continue; 2207 2208 mutex_enter(p->p_lock); 2209 error = kauth_authorize_process(l->l_cred, 2210 KAUTH_PROCESS_CANSEE, p, 2211 KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENTRY), NULL, NULL); 2212 if (error != 0) { 2213 mutex_exit(p->p_lock); 2214 continue; 2215 } 2216 2217 /* 2218 * TODO - make more efficient (see notes below). 2219 * do by session. 2220 */ 2221 switch (op) { 2222 case KERN_PROC_PID: 2223 /* could do this with just a lookup */ 2224 match = (p->p_pid == (pid_t)arg); 2225 break; 2226 2227 case KERN_PROC_PGRP: 2228 /* could do this by traversing pgrp */ 2229 match = (p->p_pgrp->pg_id == (pid_t)arg); 2230 break; 2231 2232 case KERN_PROC_SESSION: 2233 match = (p->p_session->s_sid == (pid_t)arg); 2234 break; 2235 2236 case KERN_PROC_TTY: 2237 match = true; 2238 if (arg == (int) KERN_PROC_TTY_REVOKE) { 2239 if ((p->p_lflag & PL_CONTROLT) == 0 || 2240 p->p_session->s_ttyp == NULL || 2241 p->p_session->s_ttyvp != NULL) { 2242 match = false; 2243 } 2244 } else if ((p->p_lflag & PL_CONTROLT) == 0 || 2245 p->p_session->s_ttyp == NULL) { 2246 if ((dev_t)arg != KERN_PROC_TTY_NODEV) { 2247 match = false; 2248 } 2249 } else if (p->p_session->s_ttyp->t_dev != (dev_t)arg) { 2250 match = false; 2251 } 2252 break; 2253 2254 case KERN_PROC_UID: 2255 match = (kauth_cred_geteuid(p->p_cred) == (uid_t)arg); 2256 break; 2257 2258 case KERN_PROC_RUID: 2259 match = (kauth_cred_getuid(p->p_cred) == (uid_t)arg); 2260 break; 2261 2262 case KERN_PROC_GID: 2263 match = (kauth_cred_getegid(p->p_cred) == (uid_t)arg); 2264 break; 2265 2266 case KERN_PROC_RGID: 2267 match = (kauth_cred_getgid(p->p_cred) == (uid_t)arg); 2268 break; 2269 2270 case KERN_PROC_ALL: 2271 match = true; 2272 /* allow everything */ 2273 break; 2274 2275 default: 2276 error = EINVAL; 2277 mutex_exit(p->p_lock); 2278 goto cleanup; 2279 } 2280 if (!match) { 2281 mutex_exit(p->p_lock); 2282 continue; 2283 } 2284 2285 /* 2286 * Grab a hold on the process. 2287 */ 2288 if (mmmbrains) { 2289 zombie = true; 2290 } else { 2291 zombie = !rw_tryenter(&p->p_reflock, RW_READER); 2292 } 2293 if (zombie) { 2294 LIST_INSERT_AFTER(p, marker, p_list); 2295 } 2296 2297 if (type == KERN_PROC) { 2298 if (buflen >= sizeof(struct kinfo_proc)) { 2299 fill_eproc(p, eproc, zombie); 2300 mutex_exit(p->p_lock); 2301 mutex_exit(proc_lock); 2302 error = dcopyout(l, p, &dp->kp_proc, 2303 sizeof(struct proc)); 2304 mutex_enter(proc_lock); 2305 if (error) { 2306 goto bah; 2307 } 2308 error = dcopyout(l, eproc, &dp->kp_eproc, 2309 sizeof(*eproc)); 2310 if (error) { 2311 goto bah; 2312 } 2313 dp++; 2314 buflen -= sizeof(struct kinfo_proc); 2315 } else { 2316 mutex_exit(p->p_lock); 2317 } 2318 needed += sizeof(struct kinfo_proc); 2319 } else { /* KERN_PROC2 */ 2320 if (buflen >= elem_size && elem_count > 0) { 2321 fill_kproc2(p, kproc2, zombie); 2322 mutex_exit(p->p_lock); 2323 mutex_exit(proc_lock); 2324 /* 2325 * Copy out elem_size, but not larger than 2326 * the size of a struct kinfo_proc2. 2327 */ 2328 error = dcopyout(l, kproc2, dp2, 2329 min(sizeof(*kproc2), elem_size)); 2330 mutex_enter(proc_lock); 2331 if (error) { 2332 goto bah; 2333 } 2334 dp2 += elem_size; 2335 buflen -= elem_size; 2336 elem_count--; 2337 } else { 2338 mutex_exit(p->p_lock); 2339 } 2340 needed += elem_size; 2341 } 2342 2343 /* 2344 * Release reference to process. 2345 */ 2346 if (zombie) { 2347 next = LIST_NEXT(marker, p_list); 2348 LIST_REMOVE(marker, p_list); 2349 } else { 2350 rw_exit(&p->p_reflock); 2351 } 2352 } 2353 mutex_exit(proc_lock); 2354 2355 if (where != NULL) { 2356 if (type == KERN_PROC) 2357 *oldlenp = (char *)dp - where; 2358 else 2359 *oldlenp = dp2 - where; 2360 if (needed > *oldlenp) { 2361 error = ENOMEM; 2362 goto out; 2363 } 2364 } else { 2365 needed += KERN_PROCSLOP; 2366 *oldlenp = needed; 2367 } 2368 if (kproc2) 2369 kmem_free(kproc2, sizeof(*kproc2)); 2370 if (eproc) 2371 kmem_free(eproc, sizeof(*eproc)); 2372 if (marker) 2373 kmem_free(marker, sizeof(*marker)); 2374 sysctl_relock(); 2375 return 0; 2376 bah: 2377 if (zombie) 2378 LIST_REMOVE(marker, p_list); 2379 else 2380 rw_exit(&p->p_reflock); 2381 cleanup: 2382 mutex_exit(proc_lock); 2383 out: 2384 if (kproc2) 2385 kmem_free(kproc2, sizeof(*kproc2)); 2386 if (eproc) 2387 kmem_free(eproc, sizeof(*eproc)); 2388 if (marker) 2389 kmem_free(marker, sizeof(*marker)); 2390 sysctl_relock(); 2391 return error; 2392 } 2393 2394 /* 2395 * sysctl helper routine for kern.proc_args pseudo-subtree. 2396 */ 2397 static int 2398 sysctl_kern_proc_args(SYSCTLFN_ARGS) 2399 { 2400 struct ps_strings pss; 2401 struct proc *p; 2402 size_t len, i; 2403 struct uio auio; 2404 struct iovec aiov; 2405 pid_t pid; 2406 int nargv, type, error, argvlen; 2407 char *arg; 2408 char **argv = NULL; 2409 char *tmp; 2410 struct vmspace *vmspace; 2411 vaddr_t psstr_addr; 2412 vaddr_t offsetn; 2413 vaddr_t offsetv; 2414 2415 if (namelen == 1 && name[0] == CTL_QUERY) 2416 return (sysctl_query(SYSCTLFN_CALL(rnode))); 2417 2418 if (newp != NULL || namelen != 2) 2419 return (EINVAL); 2420 pid = name[0]; 2421 type = name[1]; 2422 argv = NULL; 2423 argvlen = 0; 2424 2425 switch (type) { 2426 case KERN_PROC_ARGV: 2427 case KERN_PROC_NARGV: 2428 case KERN_PROC_ENV: 2429 case KERN_PROC_NENV: 2430 /* ok */ 2431 break; 2432 default: 2433 return (EINVAL); 2434 } 2435 2436 sysctl_unlock(); 2437 2438 /* check pid */ 2439 mutex_enter(proc_lock); 2440 if ((p = p_find(pid, PFIND_LOCKED)) == NULL) { 2441 error = EINVAL; 2442 goto out_locked; 2443 } 2444 mutex_enter(p->p_lock); 2445 2446 /* Check permission. */ 2447 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) 2448 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2449 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ARGS), NULL, NULL); 2450 else if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) 2451 error = kauth_authorize_process(l->l_cred, KAUTH_PROCESS_CANSEE, 2452 p, KAUTH_ARG(KAUTH_REQ_PROCESS_CANSEE_ENV), NULL, NULL); 2453 else 2454 error = EINVAL; /* XXXGCC */ 2455 if (error) { 2456 mutex_exit(p->p_lock); 2457 goto out_locked; 2458 } 2459 2460 if (oldp == NULL) { 2461 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) 2462 *oldlenp = sizeof (int); 2463 else 2464 *oldlenp = ARG_MAX; /* XXX XXX XXX */ 2465 error = 0; 2466 mutex_exit(p->p_lock); 2467 goto out_locked; 2468 } 2469 2470 /* 2471 * Zombies don't have a stack, so we can't read their psstrings. 2472 * System processes also don't have a user stack. 2473 */ 2474 if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) { 2475 error = EINVAL; 2476 mutex_exit(p->p_lock); 2477 goto out_locked; 2478 } 2479 2480 /* 2481 * Lock the process down in memory. 2482 */ 2483 psstr_addr = (vaddr_t)p->p_psstr; 2484 if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV) { 2485 offsetn = p->p_psnargv; 2486 offsetv = p->p_psargv; 2487 } else { 2488 offsetn = p->p_psnenv; 2489 offsetv = p->p_psenv; 2490 } 2491 vmspace = p->p_vmspace; 2492 uvmspace_addref(vmspace); 2493 mutex_exit(p->p_lock); 2494 mutex_exit(proc_lock); 2495 2496 /* 2497 * Allocate a temporary buffer to hold the arguments. 2498 */ 2499 arg = kmem_alloc(PAGE_SIZE, KM_SLEEP); 2500 2501 /* 2502 * Read in the ps_strings structure. 2503 */ 2504 aiov.iov_base = &pss; 2505 aiov.iov_len = sizeof(pss); 2506 auio.uio_iov = &aiov; 2507 auio.uio_iovcnt = 1; 2508 auio.uio_offset = psstr_addr; 2509 auio.uio_resid = sizeof(pss); 2510 auio.uio_rw = UIO_READ; 2511 UIO_SETUP_SYSSPACE(&auio); 2512 error = uvm_io(&vmspace->vm_map, &auio); 2513 if (error) 2514 goto done; 2515 2516 memcpy(&nargv, (char *)&pss + offsetn, sizeof(nargv)); 2517 if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) { 2518 error = dcopyout(l, &nargv, oldp, sizeof(nargv)); 2519 *oldlenp = sizeof(nargv); 2520 goto done; 2521 } 2522 /* 2523 * Now read the address of the argument vector. 2524 */ 2525 switch (type) { 2526 case KERN_PROC_ARGV: 2527 /* FALLTHROUGH */ 2528 case KERN_PROC_ENV: 2529 memcpy(&tmp, (char *)&pss + offsetv, sizeof(tmp)); 2530 break; 2531 default: 2532 error = EINVAL; 2533 goto done; 2534 } 2535 2536 #ifdef COMPAT_NETBSD32 2537 if (p->p_flag & PK_32) 2538 len = sizeof(netbsd32_charp) * nargv; 2539 else 2540 #endif 2541 len = sizeof(char *) * nargv; 2542 2543 if ((argvlen = len) != 0) 2544 argv = kmem_alloc(len, KM_SLEEP); 2545 2546 aiov.iov_base = argv; 2547 aiov.iov_len = len; 2548 auio.uio_iov = &aiov; 2549 auio.uio_iovcnt = 1; 2550 auio.uio_offset = (off_t)(unsigned long)tmp; 2551 auio.uio_resid = len; 2552 auio.uio_rw = UIO_READ; 2553 UIO_SETUP_SYSSPACE(&auio); 2554 error = uvm_io(&vmspace->vm_map, &auio); 2555 if (error) 2556 goto done; 2557 2558 /* 2559 * Now copy each string. 2560 */ 2561 len = 0; /* bytes written to user buffer */ 2562 for (i = 0; i < nargv; i++) { 2563 int finished = 0; 2564 vaddr_t base; 2565 size_t xlen; 2566 int j; 2567 2568 #ifdef COMPAT_NETBSD32 2569 if (p->p_flag & PK_32) { 2570 netbsd32_charp *argv32; 2571 2572 argv32 = (netbsd32_charp *)argv; 2573 base = (vaddr_t)NETBSD32PTR64(argv32[i]); 2574 } else 2575 #endif 2576 base = (vaddr_t)argv[i]; 2577 2578 /* 2579 * The program has messed around with its arguments, 2580 * possibly deleting some, and replacing them with 2581 * NULL's. Treat this as the last argument and not 2582 * a failure. 2583 */ 2584 if (base == 0) 2585 break; 2586 2587 while (!finished) { 2588 xlen = PAGE_SIZE - (base & PAGE_MASK); 2589 2590 aiov.iov_base = arg; 2591 aiov.iov_len = PAGE_SIZE; 2592 auio.uio_iov = &aiov; 2593 auio.uio_iovcnt = 1; 2594 auio.uio_offset = base; 2595 auio.uio_resid = xlen; 2596 auio.uio_rw = UIO_READ; 2597 UIO_SETUP_SYSSPACE(&auio); 2598 error = uvm_io(&vmspace->vm_map, &auio); 2599 if (error) 2600 goto done; 2601 2602 /* Look for the end of the string */ 2603 for (j = 0; j < xlen; j++) { 2604 if (arg[j] == '\0') { 2605 xlen = j + 1; 2606 finished = 1; 2607 break; 2608 } 2609 } 2610 2611 /* Check for user buffer overflow */ 2612 if (len + xlen > *oldlenp) { 2613 finished = 1; 2614 if (len > *oldlenp) 2615 xlen = 0; 2616 else 2617 xlen = *oldlenp - len; 2618 } 2619 2620 /* Copyout the page */ 2621 error = dcopyout(l, arg, (char *)oldp + len, xlen); 2622 if (error) 2623 goto done; 2624 2625 len += xlen; 2626 base += xlen; 2627 } 2628 } 2629 *oldlenp = len; 2630 2631 done: 2632 if (argvlen != 0) 2633 kmem_free(argv, argvlen); 2634 uvmspace_free(vmspace); 2635 kmem_free(arg, PAGE_SIZE); 2636 sysctl_relock(); 2637 return error; 2638 2639 out_locked: 2640 mutex_exit(proc_lock); 2641 sysctl_relock(); 2642 return error; 2643 } 2644 2645 static int 2646 sysctl_security_setidcore(SYSCTLFN_ARGS) 2647 { 2648 int newsize, error; 2649 struct sysctlnode node; 2650 2651 node = *rnode; 2652 node.sysctl_data = &newsize; 2653 newsize = *(int *)rnode->sysctl_data; 2654 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2655 if (error || newp == NULL) 2656 return error; 2657 2658 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2659 0, NULL, NULL, NULL)) 2660 return (EPERM); 2661 2662 *(int *)rnode->sysctl_data = newsize; 2663 2664 return 0; 2665 } 2666 2667 static int 2668 sysctl_security_setidcorename(SYSCTLFN_ARGS) 2669 { 2670 int error; 2671 char *newsetidcorename; 2672 struct sysctlnode node; 2673 2674 newsetidcorename = PNBUF_GET(); 2675 node = *rnode; 2676 node.sysctl_data = newsetidcorename; 2677 memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); 2678 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2679 if (error || newp == NULL) { 2680 goto out; 2681 } 2682 if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, 2683 0, NULL, NULL, NULL)) { 2684 error = EPERM; 2685 goto out; 2686 } 2687 if (strlen(newsetidcorename) == 0) { 2688 error = EINVAL; 2689 goto out; 2690 } 2691 memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); 2692 out: 2693 PNBUF_PUT(newsetidcorename); 2694 return error; 2695 } 2696 2697 /* 2698 * sysctl helper routine for kern.cp_id node. Maps cpus to their 2699 * cpuids. 2700 */ 2701 static int 2702 sysctl_kern_cpid(SYSCTLFN_ARGS) 2703 { 2704 struct sysctlnode node = *rnode; 2705 uint64_t *cp_id = NULL; 2706 int error, n = ncpu; 2707 struct cpu_info *ci; 2708 CPU_INFO_ITERATOR cii; 2709 2710 /* 2711 * Here you may either retrieve a single cpu id or the whole 2712 * set. The size you get back when probing depends on what 2713 * you ask for. 2714 */ 2715 switch (namelen) { 2716 case 0: 2717 node.sysctl_size = n * sizeof(uint64_t); 2718 n = -2; /* ALL */ 2719 break; 2720 case 1: 2721 if (name[0] < 0 || name[0] >= n) 2722 return (ENOENT); /* ENOSUCHPROCESSOR */ 2723 node.sysctl_size = sizeof(uint64_t); 2724 n = name[0]; 2725 /* 2726 * adjust these so that sysctl_lookup() will be happy 2727 */ 2728 name++; 2729 namelen--; 2730 break; 2731 default: 2732 return (EINVAL); 2733 } 2734 2735 cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); 2736 if (cp_id == NULL) 2737 return (ENOMEM); 2738 node.sysctl_data = cp_id; 2739 memset(cp_id, 0, node.sysctl_size); 2740 2741 for (CPU_INFO_FOREACH(cii, ci)) { 2742 if (n <= 0) 2743 cp_id[0] = cpu_index(ci); 2744 /* 2745 * if a specific processor was requested and we just 2746 * did it, we're done here 2747 */ 2748 if (n == 0) 2749 break; 2750 /* 2751 * if doing "all", skip to next cp_id slot for next processor 2752 */ 2753 if (n == -2) 2754 cp_id++; 2755 /* 2756 * if we're doing a specific processor, we're one 2757 * processor closer 2758 */ 2759 if (n > 0) 2760 n--; 2761 } 2762 2763 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2764 kmem_free(node.sysctl_data, node.sysctl_size); 2765 return (error); 2766 } 2767 2768 /* 2769 * sysctl helper routine for hw.usermem and hw.usermem64. Values are 2770 * calculate on the fly taking into account integer overflow and the 2771 * current wired count. 2772 */ 2773 static int 2774 sysctl_hw_usermem(SYSCTLFN_ARGS) 2775 { 2776 u_int ui; 2777 u_quad_t uq; 2778 struct sysctlnode node; 2779 2780 node = *rnode; 2781 switch (rnode->sysctl_num) { 2782 case HW_USERMEM: 2783 if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) 2784 ui = UINT_MAX; 2785 else 2786 ui *= PAGE_SIZE; 2787 node.sysctl_data = &ui; 2788 break; 2789 case HW_USERMEM64: 2790 uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; 2791 node.sysctl_data = &uq; 2792 break; 2793 default: 2794 return (EINVAL); 2795 } 2796 2797 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2798 } 2799 2800 /* 2801 * sysctl helper routine for kern.cnmagic node. Pulls the old value 2802 * out, encoded, and stuffs the new value in for decoding. 2803 */ 2804 static int 2805 sysctl_hw_cnmagic(SYSCTLFN_ARGS) 2806 { 2807 char magic[CNS_LEN]; 2808 int error; 2809 struct sysctlnode node; 2810 2811 if (oldp) 2812 cn_get_magic(magic, CNS_LEN); 2813 node = *rnode; 2814 node.sysctl_data = &magic[0]; 2815 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2816 if (error || newp == NULL) 2817 return (error); 2818 2819 return (cn_set_magic(magic)); 2820 } 2821 2822 /* 2823 * ******************************************************************** 2824 * section 3: public helper routines that are used for more than one 2825 * node 2826 * ******************************************************************** 2827 */ 2828 2829 /* 2830 * sysctl helper routine for the kern.root_device node and some ports' 2831 * machdep.root_device nodes. 2832 */ 2833 int 2834 sysctl_root_device(SYSCTLFN_ARGS) 2835 { 2836 struct sysctlnode node; 2837 2838 node = *rnode; 2839 node.sysctl_data = root_device->dv_xname; 2840 node.sysctl_size = strlen(device_xname(root_device)) + 1; 2841 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2842 } 2843 2844 /* 2845 * sysctl helper routine for kern.consdev, dependent on the current 2846 * state of the console. Also used for machdep.console_device on some 2847 * ports. 2848 */ 2849 int 2850 sysctl_consdev(SYSCTLFN_ARGS) 2851 { 2852 dev_t consdev; 2853 struct sysctlnode node; 2854 2855 if (cn_tab != NULL) 2856 consdev = cn_tab->cn_dev; 2857 else 2858 consdev = NODEV; 2859 node = *rnode; 2860 node.sysctl_data = &consdev; 2861 node.sysctl_size = sizeof(consdev); 2862 return (sysctl_lookup(SYSCTLFN_CALL(&node))); 2863 } 2864 2865 /* 2866 * ******************************************************************** 2867 * section 4: support for some helpers 2868 * ******************************************************************** 2869 */ 2870 2871 /* 2872 * Fill in a kinfo_proc2 structure for the specified process. 2873 */ 2874 static void 2875 fill_kproc2(struct proc *p, struct kinfo_proc2 *ki, bool zombie) 2876 { 2877 struct tty *tp; 2878 struct lwp *l, *l2; 2879 struct timeval ut, st, rt; 2880 sigset_t ss1, ss2; 2881 struct rusage ru; 2882 struct vmspace *vm; 2883 int tmp; 2884 2885 KASSERT(mutex_owned(proc_lock)); 2886 KASSERT(mutex_owned(p->p_lock)); 2887 2888 sigemptyset(&ss1); 2889 sigemptyset(&ss2); 2890 memset(ki, 0, sizeof(*ki)); 2891 2892 ki->p_paddr = PTRTOUINT64(p); 2893 ki->p_fd = PTRTOUINT64(p->p_fd); 2894 ki->p_cwdi = PTRTOUINT64(p->p_cwdi); 2895 ki->p_stats = PTRTOUINT64(p->p_stats); 2896 ki->p_limit = PTRTOUINT64(p->p_limit); 2897 ki->p_vmspace = PTRTOUINT64(p->p_vmspace); 2898 ki->p_sigacts = PTRTOUINT64(p->p_sigacts); 2899 ki->p_sess = PTRTOUINT64(p->p_session); 2900 ki->p_tsess = 0; /* may be changed if controlling tty below */ 2901 ki->p_ru = PTRTOUINT64(&p->p_stats->p_ru); 2902 ki->p_eflag = 0; 2903 ki->p_exitsig = p->p_exitsig; 2904 ki->p_flag = sysctl_map_flags(sysctl_flagmap, p->p_flag); 2905 ki->p_flag |= sysctl_map_flags(sysctl_sflagmap, p->p_sflag); 2906 ki->p_flag |= sysctl_map_flags(sysctl_slflagmap, p->p_slflag); 2907 ki->p_flag |= sysctl_map_flags(sysctl_lflagmap, p->p_lflag); 2908 ki->p_flag |= sysctl_map_flags(sysctl_stflagmap, p->p_stflag); 2909 ki->p_pid = p->p_pid; 2910 if (p->p_pptr) 2911 ki->p_ppid = p->p_pptr->p_pid; 2912 else 2913 ki->p_ppid = 0; 2914 ki->p_uid = kauth_cred_geteuid(p->p_cred); 2915 ki->p_ruid = kauth_cred_getuid(p->p_cred); 2916 ki->p_gid = kauth_cred_getegid(p->p_cred); 2917 ki->p_rgid = kauth_cred_getgid(p->p_cred); 2918 ki->p_svuid = kauth_cred_getsvuid(p->p_cred); 2919 ki->p_svgid = kauth_cred_getsvgid(p->p_cred); 2920 ki->p_ngroups = kauth_cred_ngroups(p->p_cred); 2921 kauth_cred_getgroups(p->p_cred, ki->p_groups, 2922 min(ki->p_ngroups, sizeof(ki->p_groups) / sizeof(ki->p_groups[0])), 2923 UIO_SYSSPACE); 2924 2925 ki->p_uticks = p->p_uticks; 2926 ki->p_sticks = p->p_sticks; 2927 ki->p_iticks = p->p_iticks; 2928 ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */ 2929 ki->p_tracep = PTRTOUINT64(p->p_tracep); 2930 ki->p_traceflag = p->p_traceflag; 2931 2932 memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t)); 2933 memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t)); 2934 2935 ki->p_cpticks = 0; 2936 ki->p_pctcpu = p->p_pctcpu; 2937 ki->p_estcpu = 0; 2938 ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */ 2939 ki->p_realstat = p->p_stat; 2940 ki->p_nice = p->p_nice; 2941 ki->p_xstat = p->p_xstat; 2942 ki->p_acflag = p->p_acflag; 2943 2944 strncpy(ki->p_comm, p->p_comm, 2945 min(sizeof(ki->p_comm), sizeof(p->p_comm))); 2946 strncpy(ki->p_ename, p->p_emul->e_name, sizeof(ki->p_ename)); 2947 2948 ki->p_nlwps = p->p_nlwps; 2949 ki->p_realflag = ki->p_flag; 2950 2951 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 2952 vm = p->p_vmspace; 2953 ki->p_vm_rssize = vm_resident_count(vm); 2954 ki->p_vm_tsize = vm->vm_tsize; 2955 ki->p_vm_dsize = vm->vm_dsize; 2956 ki->p_vm_ssize = vm->vm_ssize; 2957 2958 /* Pick a "representative" LWP */ 2959 l = proc_representative_lwp(p, &tmp, 1); 2960 lwp_lock(l); 2961 ki->p_nrlwps = tmp; 2962 ki->p_forw = 0; 2963 ki->p_back = 0; 2964 ki->p_addr = PTRTOUINT64(l->l_addr); 2965 ki->p_stat = l->l_stat; 2966 ki->p_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); 2967 ki->p_swtime = l->l_swtime; 2968 ki->p_slptime = l->l_slptime; 2969 if (l->l_stat == LSONPROC) 2970 ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags; 2971 else 2972 ki->p_schedflags = 0; 2973 ki->p_holdcnt = l->l_holdcnt; 2974 ki->p_priority = lwp_eprio(l); 2975 ki->p_usrpri = l->l_priority; 2976 if (l->l_wchan) 2977 strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg)); 2978 ki->p_wchan = PTRTOUINT64(l->l_wchan); 2979 ki->p_cpuid = cpu_index(l->l_cpu); 2980 lwp_unlock(l); 2981 LIST_FOREACH(l, &p->p_lwps, l_sibling) { 2982 /* This is hardly correct, but... */ 2983 sigplusset(&l->l_sigpend.sp_set, &ss1); 2984 sigplusset(&l->l_sigmask, &ss2); 2985 ki->p_cpticks += l->l_cpticks; 2986 ki->p_pctcpu += l->l_pctcpu; 2987 ki->p_estcpu += l->l_estcpu; 2988 } 2989 } 2990 sigplusset(&p->p_sigpend.sp_set, &ss2); 2991 memcpy(&ki->p_siglist, &ss1, sizeof(ki_sigset_t)); 2992 memcpy(&ki->p_sigmask, &ss2, sizeof(ki_sigset_t)); 2993 2994 if (p->p_session != NULL) { 2995 ki->p_sid = p->p_session->s_sid; 2996 ki->p__pgid = p->p_pgrp->pg_id; 2997 if (p->p_session->s_ttyvp) 2998 ki->p_eflag |= EPROC_CTTY; 2999 if (SESS_LEADER(p)) 3000 ki->p_eflag |= EPROC_SLEADER; 3001 strncpy(ki->p_login, p->p_session->s_login, 3002 min(sizeof ki->p_login - 1, sizeof p->p_session->s_login)); 3003 ki->p_jobc = p->p_pgrp->pg_jobc; 3004 if ((p->p_lflag & PL_CONTROLT) && (tp = p->p_session->s_ttyp)) { 3005 ki->p_tdev = tp->t_dev; 3006 ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3007 ki->p_tsess = PTRTOUINT64(tp->t_session); 3008 } else { 3009 ki->p_tdev = NODEV; 3010 } 3011 } 3012 3013 if (!P_ZOMBIE(p) && !zombie) { 3014 ki->p_uvalid = 1; 3015 ki->p_ustart_sec = p->p_stats->p_start.tv_sec; 3016 ki->p_ustart_usec = p->p_stats->p_start.tv_usec; 3017 3018 calcru(p, &ut, &st, NULL, &rt); 3019 ki->p_rtime_sec = rt.tv_sec; 3020 ki->p_rtime_usec = rt.tv_usec; 3021 ki->p_uutime_sec = ut.tv_sec; 3022 ki->p_uutime_usec = ut.tv_usec; 3023 ki->p_ustime_sec = st.tv_sec; 3024 ki->p_ustime_usec = st.tv_usec; 3025 3026 memcpy(&ru, &p->p_stats->p_ru, sizeof(ru)); 3027 ki->p_uru_nvcsw = 0; 3028 ki->p_uru_nivcsw = 0; 3029 LIST_FOREACH(l2, &p->p_lwps, l_sibling) { 3030 ki->p_uru_nvcsw += (l2->l_ncsw - l2->l_nivcsw); 3031 ki->p_uru_nivcsw += l2->l_nivcsw; 3032 ruadd(&ru, &l2->l_ru); 3033 } 3034 ki->p_uru_maxrss = ru.ru_maxrss; 3035 ki->p_uru_ixrss = ru.ru_ixrss; 3036 ki->p_uru_idrss = ru.ru_idrss; 3037 ki->p_uru_isrss = ru.ru_isrss; 3038 ki->p_uru_minflt = ru.ru_minflt; 3039 ki->p_uru_majflt = ru.ru_majflt; 3040 ki->p_uru_nswap = ru.ru_nswap; 3041 ki->p_uru_inblock = ru.ru_inblock; 3042 ki->p_uru_oublock = ru.ru_oublock; 3043 ki->p_uru_msgsnd = ru.ru_msgsnd; 3044 ki->p_uru_msgrcv = ru.ru_msgrcv; 3045 ki->p_uru_nsignals = ru.ru_nsignals; 3046 3047 timeradd(&p->p_stats->p_cru.ru_utime, 3048 &p->p_stats->p_cru.ru_stime, &ut); 3049 ki->p_uctime_sec = ut.tv_sec; 3050 ki->p_uctime_usec = ut.tv_usec; 3051 } 3052 } 3053 3054 /* 3055 * Fill in a kinfo_lwp structure for the specified lwp. 3056 */ 3057 static void 3058 fill_lwp(struct lwp *l, struct kinfo_lwp *kl) 3059 { 3060 struct proc *p = l->l_proc; 3061 struct timeval tv; 3062 3063 KASSERT(lwp_locked(l, NULL)); 3064 3065 kl->l_forw = 0; 3066 kl->l_back = 0; 3067 kl->l_laddr = PTRTOUINT64(l); 3068 kl->l_addr = PTRTOUINT64(l->l_addr); 3069 kl->l_stat = l->l_stat; 3070 kl->l_lid = l->l_lid; 3071 kl->l_flag = sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); 3072 3073 kl->l_swtime = l->l_swtime; 3074 kl->l_slptime = l->l_slptime; 3075 if (l->l_stat == LSONPROC) 3076 kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; 3077 else 3078 kl->l_schedflags = 0; 3079 kl->l_holdcnt = l->l_holdcnt; 3080 kl->l_priority = lwp_eprio(l); 3081 kl->l_usrpri = l->l_priority; 3082 if (l->l_wchan) 3083 strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); 3084 kl->l_wchan = PTRTOUINT64(l->l_wchan); 3085 kl->l_cpuid = cpu_index(l->l_cpu); 3086 bintime2timeval(&l->l_rtime, &tv); 3087 kl->l_rtime_sec = tv.tv_sec; 3088 kl->l_rtime_usec = tv.tv_usec; 3089 kl->l_cpticks = l->l_cpticks; 3090 kl->l_pctcpu = l->l_pctcpu; 3091 kl->l_pid = p->p_pid; 3092 if (l->l_name == NULL) 3093 kl->l_name[0] = '\0'; 3094 else 3095 strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); 3096 } 3097 3098 /* 3099 * Fill in an eproc structure for the specified process. 3100 */ 3101 void 3102 fill_eproc(struct proc *p, struct eproc *ep, bool zombie) 3103 { 3104 struct tty *tp; 3105 struct lwp *l; 3106 3107 KASSERT(mutex_owned(proc_lock)); 3108 KASSERT(mutex_owned(p->p_lock)); 3109 3110 memset(ep, 0, sizeof(*ep)); 3111 3112 ep->e_paddr = p; 3113 ep->e_sess = p->p_session; 3114 if (p->p_cred) { 3115 kauth_cred_topcred(p->p_cred, &ep->e_pcred); 3116 kauth_cred_toucred(p->p_cred, &ep->e_ucred); 3117 } 3118 if (p->p_stat != SIDL && !P_ZOMBIE(p) && !zombie) { 3119 struct vmspace *vm = p->p_vmspace; 3120 3121 ep->e_vm.vm_rssize = vm_resident_count(vm); 3122 ep->e_vm.vm_tsize = vm->vm_tsize; 3123 ep->e_vm.vm_dsize = vm->vm_dsize; 3124 ep->e_vm.vm_ssize = vm->vm_ssize; 3125 3126 /* Pick a "representative" LWP */ 3127 l = proc_representative_lwp(p, NULL, 1); 3128 lwp_lock(l); 3129 if (l->l_wchan) 3130 strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN); 3131 lwp_unlock(l); 3132 } 3133 if (p->p_pptr) 3134 ep->e_ppid = p->p_pptr->p_pid; 3135 if (p->p_pgrp && p->p_session) { 3136 ep->e_pgid = p->p_pgrp->pg_id; 3137 ep->e_jobc = p->p_pgrp->pg_jobc; 3138 ep->e_sid = p->p_session->s_sid; 3139 if ((p->p_lflag & PL_CONTROLT) && 3140 (tp = ep->e_sess->s_ttyp)) { 3141 ep->e_tdev = tp->t_dev; 3142 ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID; 3143 ep->e_tsess = tp->t_session; 3144 } else 3145 ep->e_tdev = NODEV; 3146 ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0; 3147 if (SESS_LEADER(p)) 3148 ep->e_flag |= EPROC_SLEADER; 3149 strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME); 3150 } 3151 ep->e_xsize = ep->e_xrssize = 0; 3152 ep->e_xccount = ep->e_xswrss = 0; 3153 } 3154 3155 u_int 3156 sysctl_map_flags(const u_int *map, u_int word) 3157 { 3158 u_int rv; 3159 3160 for (rv = 0; *map != 0; map += 2) 3161 if ((word & map[0]) != 0) 3162 rv |= map[1]; 3163 3164 return rv; 3165 } 3166
Indexes created Wed Oct 01 15:09:59 GMT 2025