| 1 | /* $NetBSD: init_sysctl.c,v 1.211 2016/05/31 05:44:19 pgoyette 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 1.211 2016/05/31 05:44:19 pgoyette Exp $" ); |
| 34 | |
| 35 | #include "opt_sysv.h" |
| 36 | #include "opt_compat_netbsd.h" |
| 37 | #include "opt_modular.h" |
| 38 | #include "pty.h" |
| 39 | |
| 40 | #include <sys/types.h> |
| 41 | #include <sys/param.h> |
| 42 | #include <sys/sysctl.h> |
| 43 | #include <sys/cpu.h> |
| 44 | #include <sys/errno.h> |
| 45 | #include <sys/systm.h> |
| 46 | #include <sys/kernel.h> |
| 47 | #include <sys/unistd.h> |
| 48 | #include <sys/disklabel.h> |
| 49 | #include <sys/cprng.h> |
| 50 | #include <sys/vnode.h> |
| 51 | #include <sys/mount.h> |
| 52 | #include <sys/namei.h> |
| 53 | #include <dev/cons.h> |
| 54 | #include <sys/socketvar.h> |
| 55 | #include <sys/file.h> |
| 56 | #include <sys/filedesc.h> |
| 57 | #include <sys/tty.h> |
| 58 | #include <sys/kmem.h> |
| 59 | #include <sys/reboot.h> |
| 60 | #include <sys/resource.h> |
| 61 | #include <sys/resourcevar.h> |
| 62 | #include <sys/exec.h> |
| 63 | #include <sys/conf.h> |
| 64 | #include <sys/device.h> |
| 65 | #include <sys/stat.h> |
| 66 | #include <sys/kauth.h> |
| 67 | #include <sys/ktrace.h> |
| 68 | |
| 69 | #include <sys/cpu.h> |
| 70 | |
| 71 | int security_setidcore_dump; |
| 72 | char security_setidcore_path[MAXPATHLEN] = "/var/crash/%n.core" ; |
| 73 | uid_t security_setidcore_owner = 0; |
| 74 | gid_t security_setidcore_group = 0; |
| 75 | mode_t security_setidcore_mode = (S_IRUSR|S_IWUSR); |
| 76 | |
| 77 | /* |
| 78 | * Current status of SysV IPC capability. Initially, these are |
| 79 | * 0 if the capability is not built-in to the kernel, but can |
| 80 | * be updated if the appropriate kernel module is (auto)loaded. |
| 81 | */ |
| 82 | |
| 83 | int kern_has_sysvmsg = 0; |
| 84 | int kern_has_sysvshm = 0; |
| 85 | int kern_has_sysvsem = 0; |
| 86 | |
| 87 | static const u_int sysctl_lwpprflagmap[] = { |
| 88 | LPR_DETACHED, L_DETACHED, |
| 89 | 0 |
| 90 | }; |
| 91 | |
| 92 | /* |
| 93 | * try over estimating by 5 procs/lwps |
| 94 | */ |
| 95 | #define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp)) |
| 96 | |
| 97 | static int dcopyout(struct lwp *, const void *, void *, size_t); |
| 98 | |
| 99 | static int |
| 100 | dcopyout(struct lwp *l, const void *kaddr, void *uaddr, size_t len) |
| 101 | { |
| 102 | int error; |
| 103 | |
| 104 | error = copyout(kaddr, uaddr, len); |
| 105 | ktrmibio(-1, UIO_READ, uaddr, len, error); |
| 106 | |
| 107 | return error; |
| 108 | } |
| 109 | |
| 110 | #ifdef DIAGNOSTIC |
| 111 | static int sysctl_kern_trigger_panic(SYSCTLFN_PROTO); |
| 112 | #endif |
| 113 | static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO); |
| 114 | static int sysctl_kern_messages(SYSCTLFN_PROTO); |
| 115 | static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO); |
| 116 | static int sysctl_kern_maxproc(SYSCTLFN_PROTO); |
| 117 | static int sysctl_kern_hostid(SYSCTLFN_PROTO); |
| 118 | static int sysctl_kern_defcorename(SYSCTLFN_PROTO); |
| 119 | static int sysctl_kern_cptime(SYSCTLFN_PROTO); |
| 120 | #if NPTY > 0 |
| 121 | static int sysctl_kern_maxptys(SYSCTLFN_PROTO); |
| 122 | #endif /* NPTY > 0 */ |
| 123 | static int sysctl_kern_lwp(SYSCTLFN_PROTO); |
| 124 | static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO); |
| 125 | static int sysctl_kern_root_partition(SYSCTLFN_PROTO); |
| 126 | static int sysctl_kern_drivers(SYSCTLFN_PROTO); |
| 127 | static int sysctl_security_setidcore(SYSCTLFN_PROTO); |
| 128 | static int sysctl_security_setidcorename(SYSCTLFN_PROTO); |
| 129 | static int sysctl_kern_cpid(SYSCTLFN_PROTO); |
| 130 | static int sysctl_hw_usermem(SYSCTLFN_PROTO); |
| 131 | static int sysctl_hw_cnmagic(SYSCTLFN_PROTO); |
| 132 | |
| 133 | static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl); |
| 134 | |
| 135 | /* |
| 136 | * ******************************************************************** |
| 137 | * section 1: setup routines |
| 138 | * ******************************************************************** |
| 139 | * These functions are stuffed into a link set for sysctl setup |
| 140 | * functions. They're never called or referenced from anywhere else. |
| 141 | * ******************************************************************** |
| 142 | */ |
| 143 | |
| 144 | /* |
| 145 | * this setup routine is a replacement for kern_sysctl() |
| 146 | */ |
| 147 | SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup" ) |
| 148 | { |
| 149 | extern int kern_logsigexit; /* defined in kern/kern_sig.c */ |
| 150 | extern fixpt_t ccpu; /* defined in kern/kern_synch.c */ |
| 151 | extern int dumponpanic; /* defined in kern/subr_prf.c */ |
| 152 | const struct sysctlnode *rnode; |
| 153 | |
| 154 | sysctl_createv(clog, 0, NULL, NULL, |
| 155 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 156 | CTLTYPE_INT, "maxvnodes" , |
| 157 | SYSCTL_DESCR("Maximum number of vnodes" ), |
| 158 | sysctl_kern_maxvnodes, 0, NULL, 0, |
| 159 | CTL_KERN, KERN_MAXVNODES, CTL_EOL); |
| 160 | sysctl_createv(clog, 0, NULL, NULL, |
| 161 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 162 | CTLTYPE_INT, "maxproc" , |
| 163 | SYSCTL_DESCR("Maximum number of simultaneous processes" ), |
| 164 | sysctl_kern_maxproc, 0, NULL, 0, |
| 165 | CTL_KERN, KERN_MAXPROC, CTL_EOL); |
| 166 | sysctl_createv(clog, 0, NULL, NULL, |
| 167 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 168 | CTLTYPE_INT, "maxfiles" , |
| 169 | SYSCTL_DESCR("Maximum number of open files" ), |
| 170 | NULL, 0, &maxfiles, 0, |
| 171 | CTL_KERN, KERN_MAXFILES, CTL_EOL); |
| 172 | sysctl_createv(clog, 0, NULL, NULL, |
| 173 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 174 | CTLTYPE_INT, "argmax" , |
| 175 | SYSCTL_DESCR("Maximum number of bytes of arguments to " |
| 176 | "execve(2)" ), |
| 177 | NULL, ARG_MAX, NULL, 0, |
| 178 | CTL_KERN, KERN_ARGMAX, CTL_EOL); |
| 179 | sysctl_createv(clog, 0, NULL, NULL, |
| 180 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, |
| 181 | CTLTYPE_INT, "hostid" , |
| 182 | SYSCTL_DESCR("System host ID number" ), |
| 183 | sysctl_kern_hostid, 0, NULL, 0, |
| 184 | CTL_KERN, KERN_HOSTID, CTL_EOL); |
| 185 | sysctl_createv(clog, 0, NULL, NULL, |
| 186 | CTLFLAG_PERMANENT, |
| 187 | CTLTYPE_STRUCT, "vnode" , |
| 188 | SYSCTL_DESCR("System vnode table" ), |
| 189 | sysctl_kern_vnode, 0, NULL, 0, |
| 190 | CTL_KERN, KERN_VNODE, CTL_EOL); |
| 191 | #ifndef GPROF |
| 192 | sysctl_createv(clog, 0, NULL, NULL, |
| 193 | CTLFLAG_PERMANENT, |
| 194 | CTLTYPE_NODE, "profiling" , |
| 195 | SYSCTL_DESCR("Profiling information (not available)" ), |
| 196 | sysctl_notavail, 0, NULL, 0, |
| 197 | CTL_KERN, KERN_PROF, CTL_EOL); |
| 198 | #endif |
| 199 | sysctl_createv(clog, 0, NULL, NULL, |
| 200 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 201 | CTLTYPE_INT, "posix1version" , |
| 202 | SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) " |
| 203 | "with which the operating system attempts " |
| 204 | "to comply" ), |
| 205 | NULL, _POSIX_VERSION, NULL, 0, |
| 206 | CTL_KERN, KERN_POSIX1, CTL_EOL); |
| 207 | sysctl_createv(clog, 0, NULL, NULL, |
| 208 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 209 | CTLTYPE_INT, "ngroups" , |
| 210 | SYSCTL_DESCR("Maximum number of supplemental groups" ), |
| 211 | NULL, NGROUPS_MAX, NULL, 0, |
| 212 | CTL_KERN, KERN_NGROUPS, CTL_EOL); |
| 213 | sysctl_createv(clog, 0, NULL, NULL, |
| 214 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 215 | CTLTYPE_INT, "job_control" , |
| 216 | SYSCTL_DESCR("Whether job control is available" ), |
| 217 | NULL, 1, NULL, 0, |
| 218 | CTL_KERN, KERN_JOB_CONTROL, CTL_EOL); |
| 219 | sysctl_createv(clog, 0, NULL, NULL, |
| 220 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 221 | CTLTYPE_INT, "saved_ids" , |
| 222 | SYSCTL_DESCR("Whether POSIX saved set-group/user ID is " |
| 223 | "available" ), NULL, |
| 224 | #ifdef _POSIX_SAVED_IDS |
| 225 | 1, |
| 226 | #else /* _POSIX_SAVED_IDS */ |
| 227 | 0, |
| 228 | #endif /* _POSIX_SAVED_IDS */ |
| 229 | NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL); |
| 230 | sysctl_createv(clog, 0, NULL, NULL, |
| 231 | CTLFLAG_PERMANENT|CTLFLAG_HEX, |
| 232 | CTLTYPE_INT, "boothowto" , |
| 233 | SYSCTL_DESCR("Flags from boot loader" ), |
| 234 | NULL, 0, &boothowto, sizeof(boothowto), |
| 235 | CTL_KERN, CTL_CREATE, CTL_EOL); |
| 236 | sysctl_createv(clog, 0, NULL, NULL, |
| 237 | CTLFLAG_PERMANENT, |
| 238 | CTLTYPE_STRUCT, "boottime" , |
| 239 | SYSCTL_DESCR("System boot time" ), |
| 240 | NULL, 0, &boottime, sizeof(boottime), |
| 241 | CTL_KERN, KERN_BOOTTIME, CTL_EOL); |
| 242 | sysctl_createv(clog, 0, NULL, NULL, |
| 243 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 244 | CTLTYPE_INT, "maxpartitions" , |
| 245 | SYSCTL_DESCR("Maximum number of partitions allowed per " |
| 246 | "disk" ), |
| 247 | NULL, MAXPARTITIONS, NULL, 0, |
| 248 | CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL); |
| 249 | sysctl_createv(clog, 0, NULL, NULL, |
| 250 | CTLFLAG_PERMANENT, |
| 251 | CTLTYPE_STRUCT, "timex" , NULL, |
| 252 | sysctl_notavail, 0, NULL, 0, |
| 253 | CTL_KERN, KERN_TIMEX, CTL_EOL); |
| 254 | sysctl_createv(clog, 0, NULL, NULL, |
| 255 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 256 | CTLTYPE_INT, "rtc_offset" , |
| 257 | SYSCTL_DESCR("Offset of real time clock from UTC in " |
| 258 | "minutes" ), |
| 259 | sysctl_kern_rtc_offset, 0, &rtc_offset, 0, |
| 260 | CTL_KERN, KERN_RTC_OFFSET, CTL_EOL); |
| 261 | sysctl_createv(clog, 0, NULL, NULL, |
| 262 | CTLFLAG_PERMANENT, |
| 263 | CTLTYPE_STRING, "root_device" , |
| 264 | SYSCTL_DESCR("Name of the root device" ), |
| 265 | sysctl_root_device, 0, NULL, 0, |
| 266 | CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL); |
| 267 | sysctl_createv(clog, 0, NULL, NULL, |
| 268 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 269 | CTLTYPE_INT, "fsync" , |
| 270 | SYSCTL_DESCR("Whether the POSIX 1003.1b File " |
| 271 | "Synchronization Option is available on " |
| 272 | "this system" ), |
| 273 | NULL, 1, NULL, 0, |
| 274 | CTL_KERN, KERN_FSYNC, CTL_EOL); |
| 275 | sysctl_createv(clog, 0, NULL, NULL, |
| 276 | CTLFLAG_PERMANENT, |
| 277 | CTLTYPE_NODE, "ipc" , |
| 278 | SYSCTL_DESCR("SysV IPC options" ), |
| 279 | NULL, 0, NULL, 0, |
| 280 | CTL_KERN, KERN_SYSVIPC, CTL_EOL); |
| 281 | sysctl_createv(clog, 0, NULL, NULL, |
| 282 | CTLFLAG_PERMANENT|CTLFLAG_READONLY, |
| 283 | CTLTYPE_INT, "sysvmsg" , |
| 284 | SYSCTL_DESCR("System V style message support available" ), |
| 285 | NULL, 0, &kern_has_sysvmsg, sizeof(int), |
| 286 | CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_MSG, CTL_EOL); |
| 287 | sysctl_createv(clog, 0, NULL, NULL, |
| 288 | CTLFLAG_PERMANENT|CTLFLAG_READONLY, |
| 289 | CTLTYPE_INT, "sysvsem" , |
| 290 | SYSCTL_DESCR("System V style semaphore support " |
| 291 | "available" ), |
| 292 | NULL, 0, &kern_has_sysvsem, sizeof(int), |
| 293 | CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SEM, CTL_EOL); |
| 294 | sysctl_createv(clog, 0, NULL, NULL, |
| 295 | CTLFLAG_PERMANENT|CTLFLAG_READONLY, |
| 296 | CTLTYPE_INT, "sysvshm" , |
| 297 | SYSCTL_DESCR("System V style shared memory support " |
| 298 | "available" ), |
| 299 | NULL, 0, &kern_has_sysvshm, sizeof(int), |
| 300 | CTL_KERN, KERN_SYSVIPC, KERN_SYSVIPC_SHM, CTL_EOL); |
| 301 | sysctl_createv(clog, 0, NULL, NULL, |
| 302 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 303 | CTLTYPE_INT, "synchronized_io" , |
| 304 | SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized " |
| 305 | "I/O Option is available on this system" ), |
| 306 | NULL, 1, NULL, 0, |
| 307 | CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL); |
| 308 | sysctl_createv(clog, 0, NULL, NULL, |
| 309 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 310 | CTLTYPE_INT, "iov_max" , |
| 311 | SYSCTL_DESCR("Maximum number of iovec structures per " |
| 312 | "process" ), |
| 313 | NULL, IOV_MAX, NULL, 0, |
| 314 | CTL_KERN, KERN_IOV_MAX, CTL_EOL); |
| 315 | sysctl_createv(clog, 0, NULL, NULL, |
| 316 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 317 | CTLTYPE_INT, "mapped_files" , |
| 318 | SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped " |
| 319 | "Files Option is available on this system" ), |
| 320 | NULL, 1, NULL, 0, |
| 321 | CTL_KERN, KERN_MAPPED_FILES, CTL_EOL); |
| 322 | sysctl_createv(clog, 0, NULL, NULL, |
| 323 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 324 | CTLTYPE_INT, "memlock" , |
| 325 | SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory " |
| 326 | "Locking Option is available on this " |
| 327 | "system" ), |
| 328 | NULL, 1, NULL, 0, |
| 329 | CTL_KERN, KERN_MEMLOCK, CTL_EOL); |
| 330 | sysctl_createv(clog, 0, NULL, NULL, |
| 331 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 332 | CTLTYPE_INT, "memlock_range" , |
| 333 | SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory " |
| 334 | "Locking Option is available on this " |
| 335 | "system" ), |
| 336 | NULL, 1, NULL, 0, |
| 337 | CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL); |
| 338 | sysctl_createv(clog, 0, NULL, NULL, |
| 339 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 340 | CTLTYPE_INT, "memory_protection" , |
| 341 | SYSCTL_DESCR("Whether the POSIX 1003.1b Memory " |
| 342 | "Protection Option is available on this " |
| 343 | "system" ), |
| 344 | NULL, 1, NULL, 0, |
| 345 | CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL); |
| 346 | sysctl_createv(clog, 0, NULL, NULL, |
| 347 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 348 | CTLTYPE_INT, "login_name_max" , |
| 349 | SYSCTL_DESCR("Maximum login name length" ), |
| 350 | NULL, LOGIN_NAME_MAX, NULL, 0, |
| 351 | CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL); |
| 352 | sysctl_createv(clog, 0, NULL, NULL, |
| 353 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 354 | CTLTYPE_STRING, "defcorename" , |
| 355 | SYSCTL_DESCR("Default core file name" ), |
| 356 | sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN, |
| 357 | CTL_KERN, KERN_DEFCORENAME, CTL_EOL); |
| 358 | sysctl_createv(clog, 0, NULL, NULL, |
| 359 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 360 | CTLTYPE_INT, "logsigexit" , |
| 361 | SYSCTL_DESCR("Log process exit when caused by signals" ), |
| 362 | NULL, 0, &kern_logsigexit, 0, |
| 363 | CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL); |
| 364 | sysctl_createv(clog, 0, NULL, NULL, |
| 365 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 366 | CTLTYPE_INT, "fscale" , |
| 367 | SYSCTL_DESCR("Kernel fixed-point scale factor" ), |
| 368 | NULL, FSCALE, NULL, 0, |
| 369 | CTL_KERN, KERN_FSCALE, CTL_EOL); |
| 370 | sysctl_createv(clog, 0, NULL, NULL, |
| 371 | CTLFLAG_PERMANENT, |
| 372 | CTLTYPE_INT, "ccpu" , |
| 373 | SYSCTL_DESCR("Scheduler exponential decay value" ), |
| 374 | NULL, 0, &ccpu, 0, |
| 375 | CTL_KERN, KERN_CCPU, CTL_EOL); |
| 376 | sysctl_createv(clog, 0, NULL, NULL, |
| 377 | CTLFLAG_PERMANENT, |
| 378 | CTLTYPE_STRUCT, "cp_time" , |
| 379 | SYSCTL_DESCR("Clock ticks spent in different CPU states" ), |
| 380 | sysctl_kern_cptime, 0, NULL, 0, |
| 381 | CTL_KERN, KERN_CP_TIME, CTL_EOL); |
| 382 | sysctl_createv(clog, 0, NULL, NULL, |
| 383 | CTLFLAG_PERMANENT, |
| 384 | CTLTYPE_STRUCT, "consdev" , |
| 385 | SYSCTL_DESCR("Console device" ), |
| 386 | sysctl_consdev, 0, NULL, sizeof(dev_t), |
| 387 | CTL_KERN, KERN_CONSDEV, CTL_EOL); |
| 388 | #if NPTY > 0 |
| 389 | sysctl_createv(clog, 0, NULL, NULL, |
| 390 | CTLFLAG_PERMANENT, |
| 391 | CTLTYPE_INT, "maxptys" , |
| 392 | SYSCTL_DESCR("Maximum number of pseudo-ttys" ), |
| 393 | sysctl_kern_maxptys, 0, NULL, 0, |
| 394 | CTL_KERN, KERN_MAXPTYS, CTL_EOL); |
| 395 | #endif /* NPTY > 0 */ |
| 396 | sysctl_createv(clog, 0, NULL, NULL, |
| 397 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 398 | CTLTYPE_INT, "maxphys" , |
| 399 | SYSCTL_DESCR("Maximum raw I/O transfer size" ), |
| 400 | NULL, MAXPHYS, NULL, 0, |
| 401 | CTL_KERN, KERN_MAXPHYS, CTL_EOL); |
| 402 | sysctl_createv(clog, 0, NULL, NULL, |
| 403 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 404 | CTLTYPE_INT, "monotonic_clock" , |
| 405 | SYSCTL_DESCR("Implementation version of the POSIX " |
| 406 | "1003.1b Monotonic Clock Option" ), |
| 407 | /* XXX _POSIX_VERSION */ |
| 408 | NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0, |
| 409 | CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL); |
| 410 | sysctl_createv(clog, 0, NULL, NULL, |
| 411 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 412 | CTLTYPE_INT, "labelsector" , |
| 413 | SYSCTL_DESCR("Sector number containing the disklabel" ), |
| 414 | NULL, LABELSECTOR, NULL, 0, |
| 415 | CTL_KERN, KERN_LABELSECTOR, CTL_EOL); |
| 416 | sysctl_createv(clog, 0, NULL, NULL, |
| 417 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 418 | CTLTYPE_INT, "labeloffset" , |
| 419 | SYSCTL_DESCR("Offset of the disklabel within the " |
| 420 | "sector" ), |
| 421 | NULL, LABELOFFSET, NULL, 0, |
| 422 | CTL_KERN, KERN_LABELOFFSET, CTL_EOL); |
| 423 | sysctl_createv(clog, 0, NULL, NULL, |
| 424 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 425 | CTLTYPE_INT, "labelusesmbr" , |
| 426 | SYSCTL_DESCR("disklabel is inside MBR partition" ), |
| 427 | NULL, LABELUSESMBR, NULL, 0, |
| 428 | CTL_KERN, CTL_CREATE, CTL_EOL); |
| 429 | sysctl_createv(clog, 0, NULL, NULL, |
| 430 | CTLFLAG_PERMANENT, |
| 431 | CTLTYPE_NODE, "lwp" , |
| 432 | SYSCTL_DESCR("System-wide LWP information" ), |
| 433 | sysctl_kern_lwp, 0, NULL, 0, |
| 434 | CTL_KERN, KERN_LWP, CTL_EOL); |
| 435 | sysctl_createv(clog, 0, NULL, NULL, |
| 436 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 437 | CTLTYPE_INT, "forkfsleep" , |
| 438 | SYSCTL_DESCR("Milliseconds to sleep on fork failure due " |
| 439 | "to process limits" ), |
| 440 | sysctl_kern_forkfsleep, 0, NULL, 0, |
| 441 | CTL_KERN, KERN_FORKFSLEEP, CTL_EOL); |
| 442 | sysctl_createv(clog, 0, NULL, NULL, |
| 443 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 444 | CTLTYPE_INT, "posix_threads" , |
| 445 | SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " |
| 446 | "Threads option to which the system " |
| 447 | "attempts to conform" ), |
| 448 | /* XXX _POSIX_VERSION */ |
| 449 | NULL, _POSIX_THREADS, NULL, 0, |
| 450 | CTL_KERN, KERN_POSIX_THREADS, CTL_EOL); |
| 451 | sysctl_createv(clog, 0, NULL, NULL, |
| 452 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 453 | CTLTYPE_INT, "posix_semaphores" , |
| 454 | SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " |
| 455 | "Semaphores option to which the system " |
| 456 | "attempts to conform" ), NULL, |
| 457 | 200112, NULL, 0, |
| 458 | CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL); |
| 459 | sysctl_createv(clog, 0, NULL, NULL, |
| 460 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 461 | CTLTYPE_INT, "posix_barriers" , |
| 462 | SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " |
| 463 | "Barriers option to which the system " |
| 464 | "attempts to conform" ), |
| 465 | /* XXX _POSIX_VERSION */ |
| 466 | NULL, _POSIX_BARRIERS, NULL, 0, |
| 467 | CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL); |
| 468 | sysctl_createv(clog, 0, NULL, NULL, |
| 469 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 470 | CTLTYPE_INT, "posix_timers" , |
| 471 | SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " |
| 472 | "Timers option to which the system " |
| 473 | "attempts to conform" ), |
| 474 | /* XXX _POSIX_VERSION */ |
| 475 | NULL, _POSIX_TIMERS, NULL, 0, |
| 476 | CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL); |
| 477 | sysctl_createv(clog, 0, NULL, NULL, |
| 478 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 479 | CTLTYPE_INT, "posix_spin_locks" , |
| 480 | SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin " |
| 481 | "Locks option to which the system attempts " |
| 482 | "to conform" ), |
| 483 | /* XXX _POSIX_VERSION */ |
| 484 | NULL, _POSIX_SPIN_LOCKS, NULL, 0, |
| 485 | CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL); |
| 486 | sysctl_createv(clog, 0, NULL, NULL, |
| 487 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 488 | CTLTYPE_INT, "posix_reader_writer_locks" , |
| 489 | SYSCTL_DESCR("Version of IEEE Std 1003.1 and its " |
| 490 | "Read-Write Locks option to which the " |
| 491 | "system attempts to conform" ), |
| 492 | /* XXX _POSIX_VERSION */ |
| 493 | NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0, |
| 494 | CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL); |
| 495 | sysctl_createv(clog, 0, NULL, NULL, |
| 496 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 497 | CTLTYPE_INT, "dump_on_panic" , |
| 498 | SYSCTL_DESCR("Perform a crash dump on system panic" ), |
| 499 | NULL, 0, &dumponpanic, 0, |
| 500 | CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL); |
| 501 | #ifdef DIAGNOSTIC |
| 502 | sysctl_createv(clog, 0, NULL, NULL, |
| 503 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 504 | CTLTYPE_INT, "panic_now" , |
| 505 | SYSCTL_DESCR("Trigger a panic" ), |
| 506 | sysctl_kern_trigger_panic, 0, NULL, 0, |
| 507 | CTL_KERN, CTL_CREATE, CTL_EOL); |
| 508 | #endif |
| 509 | sysctl_createv(clog, 0, NULL, NULL, |
| 510 | CTLFLAG_PERMANENT, |
| 511 | CTLTYPE_INT, "root_partition" , |
| 512 | SYSCTL_DESCR("Root partition on the root device" ), |
| 513 | sysctl_kern_root_partition, 0, NULL, 0, |
| 514 | CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL); |
| 515 | sysctl_createv(clog, 0, NULL, NULL, |
| 516 | CTLFLAG_PERMANENT, |
| 517 | CTLTYPE_STRUCT, "drivers" , |
| 518 | SYSCTL_DESCR("List of all drivers with block and " |
| 519 | "character device numbers" ), |
| 520 | sysctl_kern_drivers, 0, NULL, 0, |
| 521 | CTL_KERN, KERN_DRIVERS, CTL_EOL); |
| 522 | sysctl_createv(clog, 0, NULL, NULL, |
| 523 | CTLFLAG_PERMANENT, |
| 524 | CTLTYPE_STRUCT, "cp_id" , |
| 525 | SYSCTL_DESCR("Mapping of CPU number to CPU id" ), |
| 526 | sysctl_kern_cpid, 0, NULL, 0, |
| 527 | CTL_KERN, KERN_CP_ID, CTL_EOL); |
| 528 | sysctl_createv(clog, 0, NULL, &rnode, |
| 529 | CTLFLAG_PERMANENT, |
| 530 | CTLTYPE_NODE, "coredump" , |
| 531 | SYSCTL_DESCR("Coredump settings." ), |
| 532 | NULL, 0, NULL, 0, |
| 533 | CTL_KERN, CTL_CREATE, CTL_EOL); |
| 534 | sysctl_createv(clog, 0, &rnode, &rnode, |
| 535 | CTLFLAG_PERMANENT, |
| 536 | CTLTYPE_NODE, "setid" , |
| 537 | SYSCTL_DESCR("Set-id processes' coredump settings." ), |
| 538 | NULL, 0, NULL, 0, |
| 539 | CTL_CREATE, CTL_EOL); |
| 540 | sysctl_createv(clog, 0, &rnode, NULL, |
| 541 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 542 | CTLTYPE_INT, "dump" , |
| 543 | SYSCTL_DESCR("Allow set-id processes to dump core." ), |
| 544 | sysctl_security_setidcore, 0, &security_setidcore_dump, |
| 545 | sizeof(security_setidcore_dump), |
| 546 | CTL_CREATE, CTL_EOL); |
| 547 | sysctl_createv(clog, 0, &rnode, NULL, |
| 548 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 549 | CTLTYPE_STRING, "path" , |
| 550 | SYSCTL_DESCR("Path pattern for set-id coredumps." ), |
| 551 | sysctl_security_setidcorename, 0, |
| 552 | security_setidcore_path, |
| 553 | sizeof(security_setidcore_path), |
| 554 | CTL_CREATE, CTL_EOL); |
| 555 | sysctl_createv(clog, 0, &rnode, NULL, |
| 556 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 557 | CTLTYPE_INT, "owner" , |
| 558 | SYSCTL_DESCR("Owner id for set-id processes' cores." ), |
| 559 | sysctl_security_setidcore, 0, &security_setidcore_owner, |
| 560 | 0, |
| 561 | CTL_CREATE, CTL_EOL); |
| 562 | sysctl_createv(clog, 0, &rnode, NULL, |
| 563 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 564 | CTLTYPE_INT, "group" , |
| 565 | SYSCTL_DESCR("Group id for set-id processes' cores." ), |
| 566 | sysctl_security_setidcore, 0, &security_setidcore_group, |
| 567 | 0, |
| 568 | CTL_CREATE, CTL_EOL); |
| 569 | sysctl_createv(clog, 0, &rnode, NULL, |
| 570 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 571 | CTLTYPE_INT, "mode" , |
| 572 | SYSCTL_DESCR("Mode for set-id processes' cores." ), |
| 573 | sysctl_security_setidcore, 0, &security_setidcore_mode, |
| 574 | 0, |
| 575 | CTL_CREATE, CTL_EOL); |
| 576 | sysctl_createv(clog, 0, NULL, NULL, |
| 577 | CTLFLAG_IMMEDIATE|CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 578 | CTLTYPE_INT, "no_sa_support" , |
| 579 | SYSCTL_DESCR("0 if the kernel supports SA, otherwise " |
| 580 | "it doesn't" ), |
| 581 | NULL, 1, NULL, 0, |
| 582 | CTL_KERN, CTL_CREATE, CTL_EOL); |
| 583 | sysctl_createv(clog, 0, NULL, NULL, |
| 584 | CTLFLAG_PERMANENT, |
| 585 | CTLTYPE_STRING, "configname" , |
| 586 | SYSCTL_DESCR("Name of config file" ), |
| 587 | NULL, 0, __UNCONST(kernel_ident), 0, |
| 588 | CTL_KERN, CTL_CREATE, CTL_EOL); |
| 589 | sysctl_createv(clog, 0, NULL, NULL, |
| 590 | CTLFLAG_PERMANENT, |
| 591 | CTLTYPE_STRING, "buildinfo" , |
| 592 | SYSCTL_DESCR("Information from build environment" ), |
| 593 | NULL, 0, __UNCONST(buildinfo), 0, |
| 594 | CTL_KERN, CTL_CREATE, CTL_EOL); |
| 595 | sysctl_createv(clog, 0, NULL, NULL, |
| 596 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 597 | CTLTYPE_INT, "messages" , |
| 598 | SYSCTL_DESCR("Kernel message verbosity" ), |
| 599 | sysctl_kern_messages, 0, NULL, 0, |
| 600 | CTL_KERN, CTL_CREATE, CTL_EOL); |
| 601 | } |
| 602 | |
| 603 | SYSCTL_SETUP(sysctl_hw_misc_setup, "sysctl hw subtree misc setup" ) |
| 604 | { |
| 605 | |
| 606 | sysctl_createv(clog, 0, NULL, NULL, |
| 607 | CTLFLAG_PERMANENT, |
| 608 | CTLTYPE_INT, "usermem" , |
| 609 | SYSCTL_DESCR("Bytes of non-kernel memory" ), |
| 610 | sysctl_hw_usermem, 0, NULL, 0, |
| 611 | CTL_HW, HW_USERMEM, CTL_EOL); |
| 612 | sysctl_createv(clog, 0, NULL, NULL, |
| 613 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX, |
| 614 | CTLTYPE_STRING, "cnmagic" , |
| 615 | SYSCTL_DESCR("Console magic key sequence" ), |
| 616 | sysctl_hw_cnmagic, 0, NULL, CNS_LEN, |
| 617 | CTL_HW, HW_CNMAGIC, CTL_EOL); |
| 618 | sysctl_createv(clog, 0, NULL, NULL, |
| 619 | CTLFLAG_PERMANENT, |
| 620 | CTLTYPE_QUAD, "usermem64" , |
| 621 | SYSCTL_DESCR("Bytes of non-kernel memory" ), |
| 622 | sysctl_hw_usermem, 0, NULL, 0, |
| 623 | CTL_HW, HW_USERMEM64, CTL_EOL); |
| 624 | } |
| 625 | |
| 626 | #ifdef DEBUG |
| 627 | /* |
| 628 | * Debugging related system variables. |
| 629 | */ |
| 630 | struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4; |
| 631 | struct ctldebug debug5, debug6, debug7, debug8, debug9; |
| 632 | struct ctldebug debug10, debug11, debug12, debug13, debug14; |
| 633 | struct ctldebug debug15, debug16, debug17, debug18, debug19; |
| 634 | static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = { |
| 635 | &debug0, &debug1, &debug2, &debug3, &debug4, |
| 636 | &debug5, &debug6, &debug7, &debug8, &debug9, |
| 637 | &debug10, &debug11, &debug12, &debug13, &debug14, |
| 638 | &debug15, &debug16, &debug17, &debug18, &debug19, |
| 639 | }; |
| 640 | |
| 641 | /* |
| 642 | * this setup routine is a replacement for debug_sysctl() |
| 643 | * |
| 644 | * note that it creates several nodes per defined debug variable |
| 645 | */ |
| 646 | SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup" ) |
| 647 | { |
| 648 | struct ctldebug *cdp; |
| 649 | char nodename[20]; |
| 650 | int i; |
| 651 | |
| 652 | /* |
| 653 | * two ways here: |
| 654 | * |
| 655 | * the "old" way (debug.name -> value) which was emulated by |
| 656 | * the sysctl(8) binary |
| 657 | * |
| 658 | * the new way, which the sysctl(8) binary was actually using |
| 659 | |
| 660 | node debug |
| 661 | node debug.0 |
| 662 | string debug.0.name |
| 663 | int debug.0.value |
| 664 | int debug.name |
| 665 | |
| 666 | */ |
| 667 | |
| 668 | for (i = 0; i < CTL_DEBUG_MAXID; i++) { |
| 669 | cdp = debugvars[i]; |
| 670 | if (cdp->debugname == NULL || cdp->debugvar == NULL) |
| 671 | continue; |
| 672 | |
| 673 | snprintf(nodename, sizeof(nodename), "debug%d" , i); |
| 674 | sysctl_createv(clog, 0, NULL, NULL, |
| 675 | CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, |
| 676 | CTLTYPE_NODE, nodename, NULL, |
| 677 | NULL, 0, NULL, 0, |
| 678 | CTL_DEBUG, i, CTL_EOL); |
| 679 | sysctl_createv(clog, 0, NULL, NULL, |
| 680 | CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, |
| 681 | CTLTYPE_STRING, "name" , NULL, |
| 682 | /*XXXUNCONST*/ |
| 683 | NULL, 0, __UNCONST(cdp->debugname), 0, |
| 684 | CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL); |
| 685 | sysctl_createv(clog, 0, NULL, NULL, |
| 686 | CTLFLAG_PERMANENT|CTLFLAG_HIDDEN, |
| 687 | CTLTYPE_INT, "value" , NULL, |
| 688 | NULL, 0, cdp->debugvar, 0, |
| 689 | CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL); |
| 690 | sysctl_createv(clog, 0, NULL, NULL, |
| 691 | CTLFLAG_PERMANENT, |
| 692 | CTLTYPE_INT, cdp->debugname, NULL, |
| 693 | NULL, 0, cdp->debugvar, 0, |
| 694 | CTL_DEBUG, CTL_CREATE, CTL_EOL); |
| 695 | } |
| 696 | } |
| 697 | #endif /* DEBUG */ |
| 698 | |
| 699 | /* |
| 700 | * ******************************************************************** |
| 701 | * section 2: private node-specific helper routines. |
| 702 | * ******************************************************************** |
| 703 | */ |
| 704 | |
| 705 | #ifdef DIAGNOSTIC |
| 706 | static int |
| 707 | sysctl_kern_trigger_panic(SYSCTLFN_ARGS) |
| 708 | { |
| 709 | int newtrig, error; |
| 710 | struct sysctlnode node; |
| 711 | |
| 712 | newtrig = 0; |
| 713 | node = *rnode; |
| 714 | node.sysctl_data = &newtrig; |
| 715 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 716 | if (error || newp == NULL) |
| 717 | return (error); |
| 718 | |
| 719 | if (newtrig != 0) |
| 720 | panic("Panic triggered" ); |
| 721 | |
| 722 | return (error); |
| 723 | } |
| 724 | #endif |
| 725 | |
| 726 | /* |
| 727 | * sysctl helper routine for kern.maxvnodes. Drain vnodes if |
| 728 | * new value is lower than desiredvnodes and then calls reinit |
| 729 | * routines that needs to adjust to the new value. |
| 730 | */ |
| 731 | static int |
| 732 | sysctl_kern_maxvnodes(SYSCTLFN_ARGS) |
| 733 | { |
| 734 | int error, new_vnodes, old_vnodes, new_max; |
| 735 | struct sysctlnode node; |
| 736 | |
| 737 | new_vnodes = desiredvnodes; |
| 738 | node = *rnode; |
| 739 | node.sysctl_data = &new_vnodes; |
| 740 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 741 | if (error || newp == NULL) |
| 742 | return (error); |
| 743 | |
| 744 | /* |
| 745 | * sysctl passes down unsigned values, require them |
| 746 | * to be positive |
| 747 | */ |
| 748 | if (new_vnodes <= 0) |
| 749 | return (EINVAL); |
| 750 | |
| 751 | /* Limits: 75% of kmem and physical memory. */ |
| 752 | new_max = calc_cache_size(vmem_size(kmem_arena, VMEM_FREE|VMEM_ALLOC), |
| 753 | 75, 75) / VNODE_COST; |
| 754 | if (new_vnodes > new_max) |
| 755 | new_vnodes = new_max; |
| 756 | |
| 757 | old_vnodes = desiredvnodes; |
| 758 | desiredvnodes = new_vnodes; |
| 759 | error = vfs_drainvnodes(new_vnodes); |
| 760 | if (error) { |
| 761 | desiredvnodes = old_vnodes; |
| 762 | return (error); |
| 763 | } |
| 764 | vfs_reinit(); |
| 765 | nchreinit(); |
| 766 | |
| 767 | return (0); |
| 768 | } |
| 769 | |
| 770 | /* |
| 771 | * sysctl helper routine for kern.messages. |
| 772 | * Alters boothowto to display kernel messages in increasing verbosity |
| 773 | * from 0 to 4. |
| 774 | */ |
| 775 | |
| 776 | #define MAXMESSAGES 4 |
| 777 | static int |
| 778 | sysctl_kern_messages(SYSCTLFN_ARGS) |
| 779 | { |
| 780 | int error, messageverbose, messagemask, newboothowto; |
| 781 | struct sysctlnode node; |
| 782 | |
| 783 | messagemask = (AB_NORMAL|AB_QUIET|AB_SILENT|AB_VERBOSE|AB_DEBUG); |
| 784 | switch (boothowto & messagemask) { |
| 785 | case AB_SILENT: |
| 786 | messageverbose = 0; |
| 787 | break; |
| 788 | case AB_QUIET: |
| 789 | messageverbose = 1; |
| 790 | break; |
| 791 | case AB_VERBOSE: |
| 792 | messageverbose = 3; |
| 793 | break; |
| 794 | case AB_DEBUG: |
| 795 | messageverbose = 4; |
| 796 | break; |
| 797 | case AB_NORMAL: |
| 798 | default: |
| 799 | messageverbose = 2; |
| 800 | } |
| 801 | |
| 802 | node = *rnode; |
| 803 | node.sysctl_data = &messageverbose; |
| 804 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 805 | if (error || newp == NULL) |
| 806 | return (error); |
| 807 | if (messageverbose < 0 || messageverbose > MAXMESSAGES) |
| 808 | return EINVAL; |
| 809 | |
| 810 | /* Set boothowto */ |
| 811 | newboothowto = boothowto & ~messagemask; |
| 812 | |
| 813 | switch (messageverbose) { |
| 814 | case 0: |
| 815 | newboothowto |= AB_SILENT; |
| 816 | break; |
| 817 | case 1: |
| 818 | newboothowto |= AB_QUIET; |
| 819 | break; |
| 820 | case 3: |
| 821 | newboothowto |= AB_VERBOSE; |
| 822 | break; |
| 823 | case 4: |
| 824 | newboothowto |= AB_DEBUG; |
| 825 | break; |
| 826 | case 2: |
| 827 | default: /* Messages default to normal. */ |
| 828 | break; |
| 829 | } |
| 830 | |
| 831 | boothowto = newboothowto; |
| 832 | |
| 833 | return (0); |
| 834 | } |
| 835 | |
| 836 | /* |
| 837 | * sysctl helper routine for rtc_offset - set time after changes |
| 838 | */ |
| 839 | static int |
| 840 | sysctl_kern_rtc_offset(SYSCTLFN_ARGS) |
| 841 | { |
| 842 | struct timespec ts, delta; |
| 843 | int error, new_rtc_offset; |
| 844 | struct sysctlnode node; |
| 845 | |
| 846 | new_rtc_offset = rtc_offset; |
| 847 | node = *rnode; |
| 848 | node.sysctl_data = &new_rtc_offset; |
| 849 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 850 | if (error || newp == NULL) |
| 851 | return (error); |
| 852 | |
| 853 | if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_TIME, |
| 854 | KAUTH_REQ_SYSTEM_TIME_RTCOFFSET, |
| 855 | KAUTH_ARG(new_rtc_offset), NULL, NULL)) |
| 856 | return (EPERM); |
| 857 | if (rtc_offset == new_rtc_offset) |
| 858 | return (0); |
| 859 | |
| 860 | /* if we change the offset, adjust the time */ |
| 861 | nanotime(&ts); |
| 862 | delta.tv_sec = 60 * (new_rtc_offset - rtc_offset); |
| 863 | delta.tv_nsec = 0; |
| 864 | timespecadd(&ts, &delta, &ts); |
| 865 | rtc_offset = new_rtc_offset; |
| 866 | return (settime(l->l_proc, &ts)); |
| 867 | } |
| 868 | |
| 869 | /* |
| 870 | * sysctl helper routine for kern.maxproc. Ensures that the new |
| 871 | * values are not too low or too high. |
| 872 | */ |
| 873 | static int |
| 874 | sysctl_kern_maxproc(SYSCTLFN_ARGS) |
| 875 | { |
| 876 | int error, nmaxproc; |
| 877 | struct sysctlnode node; |
| 878 | |
| 879 | nmaxproc = maxproc; |
| 880 | node = *rnode; |
| 881 | node.sysctl_data = &nmaxproc; |
| 882 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 883 | if (error || newp == NULL) |
| 884 | return (error); |
| 885 | |
| 886 | if (nmaxproc < 0 || nmaxproc >= PID_MAX) |
| 887 | return (EINVAL); |
| 888 | #ifdef __HAVE_CPU_MAXPROC |
| 889 | if (nmaxproc > cpu_maxproc()) |
| 890 | return (EINVAL); |
| 891 | #endif |
| 892 | maxproc = nmaxproc; |
| 893 | |
| 894 | return (0); |
| 895 | } |
| 896 | |
| 897 | /* |
| 898 | * sysctl helper function for kern.hostid. The hostid is a long, but |
| 899 | * we export it as an int, so we need to give it a little help. |
| 900 | */ |
| 901 | static int |
| 902 | sysctl_kern_hostid(SYSCTLFN_ARGS) |
| 903 | { |
| 904 | int error, inthostid; |
| 905 | struct sysctlnode node; |
| 906 | |
| 907 | inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */ |
| 908 | node = *rnode; |
| 909 | node.sysctl_data = &inthostid; |
| 910 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 911 | if (error || newp == NULL) |
| 912 | return (error); |
| 913 | |
| 914 | hostid = (unsigned)inthostid; |
| 915 | |
| 916 | return (0); |
| 917 | } |
| 918 | |
| 919 | /* |
| 920 | * sysctl helper routine for kern.defcorename. In the case of a new |
| 921 | * string being assigned, check that it's not a zero-length string. |
| 922 | * (XXX the check in -current doesn't work, but do we really care?) |
| 923 | */ |
| 924 | static int |
| 925 | sysctl_kern_defcorename(SYSCTLFN_ARGS) |
| 926 | { |
| 927 | int error; |
| 928 | char *newcorename; |
| 929 | struct sysctlnode node; |
| 930 | |
| 931 | newcorename = PNBUF_GET(); |
| 932 | node = *rnode; |
| 933 | node.sysctl_data = &newcorename[0]; |
| 934 | memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); |
| 935 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 936 | if (error || newp == NULL) { |
| 937 | goto done; |
| 938 | } |
| 939 | |
| 940 | /* |
| 941 | * when sysctl_lookup() deals with a string, it's guaranteed |
| 942 | * to come back nul terminated. So there. :) |
| 943 | */ |
| 944 | if (strlen(newcorename) == 0) { |
| 945 | error = EINVAL; |
| 946 | } else { |
| 947 | memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); |
| 948 | error = 0; |
| 949 | } |
| 950 | done: |
| 951 | PNBUF_PUT(newcorename); |
| 952 | return error; |
| 953 | } |
| 954 | |
| 955 | /* |
| 956 | * sysctl helper routine for kern.cp_time node. Adds up cpu time |
| 957 | * across all cpus. |
| 958 | */ |
| 959 | static int |
| 960 | sysctl_kern_cptime(SYSCTLFN_ARGS) |
| 961 | { |
| 962 | struct sysctlnode node = *rnode; |
| 963 | uint64_t *cp_time = NULL; |
| 964 | int error, n = ncpu, i; |
| 965 | struct cpu_info *ci; |
| 966 | CPU_INFO_ITERATOR cii; |
| 967 | |
| 968 | /* |
| 969 | * if you specifically pass a buffer that is the size of the |
| 970 | * sum, or if you are probing for the size, you get the "sum" |
| 971 | * of cp_time (and the size thereof) across all processors. |
| 972 | * |
| 973 | * alternately, you can pass an additional mib number and get |
| 974 | * cp_time for that particular processor. |
| 975 | */ |
| 976 | switch (namelen) { |
| 977 | case 0: |
| 978 | if (*oldlenp == sizeof(uint64_t) * CPUSTATES || oldp == NULL) { |
| 979 | node.sysctl_size = sizeof(uint64_t) * CPUSTATES; |
| 980 | n = -1; /* SUM */ |
| 981 | } |
| 982 | else { |
| 983 | node.sysctl_size = n * sizeof(uint64_t) * CPUSTATES; |
| 984 | n = -2; /* ALL */ |
| 985 | } |
| 986 | break; |
| 987 | case 1: |
| 988 | if (name[0] < 0 || name[0] >= n) |
| 989 | return (ENOENT); /* ENOSUCHPROCESSOR */ |
| 990 | node.sysctl_size = sizeof(uint64_t) * CPUSTATES; |
| 991 | n = name[0]; |
| 992 | /* |
| 993 | * adjust these so that sysctl_lookup() will be happy |
| 994 | */ |
| 995 | name++; |
| 996 | namelen--; |
| 997 | break; |
| 998 | default: |
| 999 | return (EINVAL); |
| 1000 | } |
| 1001 | |
| 1002 | cp_time = kmem_alloc(node.sysctl_size, KM_SLEEP); |
| 1003 | if (cp_time == NULL) |
| 1004 | return (ENOMEM); |
| 1005 | node.sysctl_data = cp_time; |
| 1006 | memset(cp_time, 0, node.sysctl_size); |
| 1007 | |
| 1008 | for (CPU_INFO_FOREACH(cii, ci)) { |
| 1009 | if (n <= 0) { |
| 1010 | for (i = 0; i < CPUSTATES; i++) { |
| 1011 | cp_time[i] += ci->ci_schedstate.spc_cp_time[i]; |
| 1012 | } |
| 1013 | } |
| 1014 | /* |
| 1015 | * if a specific processor was requested and we just |
| 1016 | * did it, we're done here |
| 1017 | */ |
| 1018 | if (n == 0) |
| 1019 | break; |
| 1020 | /* |
| 1021 | * if doing "all", skip to next cp_time set for next processor |
| 1022 | */ |
| 1023 | if (n == -2) |
| 1024 | cp_time += CPUSTATES; |
| 1025 | /* |
| 1026 | * if we're doing a specific processor, we're one |
| 1027 | * processor closer |
| 1028 | */ |
| 1029 | if (n > 0) |
| 1030 | n--; |
| 1031 | } |
| 1032 | |
| 1033 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1034 | kmem_free(node.sysctl_data, node.sysctl_size); |
| 1035 | return (error); |
| 1036 | } |
| 1037 | |
| 1038 | #if NPTY > 0 |
| 1039 | /* |
| 1040 | * sysctl helper routine for kern.maxptys. Ensures that any new value |
| 1041 | * is acceptable to the pty subsystem. |
| 1042 | */ |
| 1043 | static int |
| 1044 | sysctl_kern_maxptys(SYSCTLFN_ARGS) |
| 1045 | { |
| 1046 | int pty_maxptys(int, int); /* defined in kern/tty_pty.c */ |
| 1047 | int error, xmax; |
| 1048 | struct sysctlnode node; |
| 1049 | |
| 1050 | /* get current value of maxptys */ |
| 1051 | xmax = pty_maxptys(0, 0); |
| 1052 | |
| 1053 | node = *rnode; |
| 1054 | node.sysctl_data = &xmax; |
| 1055 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1056 | if (error || newp == NULL) |
| 1057 | return (error); |
| 1058 | |
| 1059 | if (xmax != pty_maxptys(xmax, 1)) |
| 1060 | return (EINVAL); |
| 1061 | |
| 1062 | return (0); |
| 1063 | } |
| 1064 | #endif /* NPTY > 0 */ |
| 1065 | |
| 1066 | /* |
| 1067 | * sysctl helper routine to do kern.lwp.* work. |
| 1068 | */ |
| 1069 | static int |
| 1070 | sysctl_kern_lwp(SYSCTLFN_ARGS) |
| 1071 | { |
| 1072 | struct kinfo_lwp klwp; |
| 1073 | struct proc *p; |
| 1074 | struct lwp *l2, *l3; |
| 1075 | char *where, *dp; |
| 1076 | int pid, elem_size, elem_count; |
| 1077 | int buflen, needed, error; |
| 1078 | bool gotit; |
| 1079 | |
| 1080 | if (namelen == 1 && name[0] == CTL_QUERY) |
| 1081 | return (sysctl_query(SYSCTLFN_CALL(rnode))); |
| 1082 | |
| 1083 | dp = where = oldp; |
| 1084 | buflen = where != NULL ? *oldlenp : 0; |
| 1085 | error = needed = 0; |
| 1086 | |
| 1087 | if (newp != NULL || namelen != 3) |
| 1088 | return (EINVAL); |
| 1089 | pid = name[0]; |
| 1090 | elem_size = name[1]; |
| 1091 | elem_count = name[2]; |
| 1092 | |
| 1093 | sysctl_unlock(); |
| 1094 | if (pid == -1) { |
| 1095 | mutex_enter(proc_lock); |
| 1096 | PROCLIST_FOREACH(p, &allproc) { |
| 1097 | /* Grab a hold on the process. */ |
| 1098 | if (!rw_tryenter(&p->p_reflock, RW_READER)) { |
| 1099 | continue; |
| 1100 | } |
| 1101 | mutex_exit(proc_lock); |
| 1102 | |
| 1103 | mutex_enter(p->p_lock); |
| 1104 | LIST_FOREACH(l2, &p->p_lwps, l_sibling) { |
| 1105 | if (buflen >= elem_size && elem_count > 0) { |
| 1106 | lwp_lock(l2); |
| 1107 | fill_lwp(l2, &klwp); |
| 1108 | lwp_unlock(l2); |
| 1109 | mutex_exit(p->p_lock); |
| 1110 | |
| 1111 | /* |
| 1112 | * Copy out elem_size, but not |
| 1113 | * larger than the size of a |
| 1114 | * struct kinfo_proc2. |
| 1115 | */ |
| 1116 | error = dcopyout(l, &klwp, dp, |
| 1117 | min(sizeof(klwp), elem_size)); |
| 1118 | if (error) { |
| 1119 | rw_exit(&p->p_reflock); |
| 1120 | goto cleanup; |
| 1121 | } |
| 1122 | mutex_enter(p->p_lock); |
| 1123 | LIST_FOREACH(l3, &p->p_lwps, |
| 1124 | l_sibling) { |
| 1125 | if (l2 == l3) |
| 1126 | break; |
| 1127 | } |
| 1128 | if (l3 == NULL) { |
| 1129 | mutex_exit(p->p_lock); |
| 1130 | rw_exit(&p->p_reflock); |
| 1131 | error = EAGAIN; |
| 1132 | goto cleanup; |
| 1133 | } |
| 1134 | dp += elem_size; |
| 1135 | buflen -= elem_size; |
| 1136 | elem_count--; |
| 1137 | } |
| 1138 | needed += elem_size; |
| 1139 | } |
| 1140 | mutex_exit(p->p_lock); |
| 1141 | |
| 1142 | /* Drop reference to process. */ |
| 1143 | mutex_enter(proc_lock); |
| 1144 | rw_exit(&p->p_reflock); |
| 1145 | } |
| 1146 | mutex_exit(proc_lock); |
| 1147 | } else { |
| 1148 | mutex_enter(proc_lock); |
| 1149 | p = proc_find(pid); |
| 1150 | if (p == NULL) { |
| 1151 | error = ESRCH; |
| 1152 | mutex_exit(proc_lock); |
| 1153 | goto cleanup; |
| 1154 | } |
| 1155 | /* Grab a hold on the process. */ |
| 1156 | gotit = rw_tryenter(&p->p_reflock, RW_READER); |
| 1157 | mutex_exit(proc_lock); |
| 1158 | if (!gotit) { |
| 1159 | error = ESRCH; |
| 1160 | goto cleanup; |
| 1161 | } |
| 1162 | |
| 1163 | mutex_enter(p->p_lock); |
| 1164 | LIST_FOREACH(l2, &p->p_lwps, l_sibling) { |
| 1165 | if (buflen >= elem_size && elem_count > 0) { |
| 1166 | lwp_lock(l2); |
| 1167 | fill_lwp(l2, &klwp); |
| 1168 | lwp_unlock(l2); |
| 1169 | mutex_exit(p->p_lock); |
| 1170 | /* |
| 1171 | * Copy out elem_size, but not larger than |
| 1172 | * the size of a struct kinfo_proc2. |
| 1173 | */ |
| 1174 | error = dcopyout(l, &klwp, dp, |
| 1175 | min(sizeof(klwp), elem_size)); |
| 1176 | if (error) { |
| 1177 | rw_exit(&p->p_reflock); |
| 1178 | goto cleanup; |
| 1179 | } |
| 1180 | mutex_enter(p->p_lock); |
| 1181 | LIST_FOREACH(l3, &p->p_lwps, l_sibling) { |
| 1182 | if (l2 == l3) |
| 1183 | break; |
| 1184 | } |
| 1185 | if (l3 == NULL) { |
| 1186 | mutex_exit(p->p_lock); |
| 1187 | rw_exit(&p->p_reflock); |
| 1188 | error = EAGAIN; |
| 1189 | goto cleanup; |
| 1190 | } |
| 1191 | dp += elem_size; |
| 1192 | buflen -= elem_size; |
| 1193 | elem_count--; |
| 1194 | } |
| 1195 | needed += elem_size; |
| 1196 | } |
| 1197 | mutex_exit(p->p_lock); |
| 1198 | |
| 1199 | /* Drop reference to process. */ |
| 1200 | rw_exit(&p->p_reflock); |
| 1201 | } |
| 1202 | |
| 1203 | if (where != NULL) { |
| 1204 | *oldlenp = dp - where; |
| 1205 | if (needed > *oldlenp) { |
| 1206 | sysctl_relock(); |
| 1207 | return (ENOMEM); |
| 1208 | } |
| 1209 | } else { |
| 1210 | needed += KERN_LWPSLOP; |
| 1211 | *oldlenp = needed; |
| 1212 | } |
| 1213 | error = 0; |
| 1214 | cleanup: |
| 1215 | sysctl_relock(); |
| 1216 | return (error); |
| 1217 | } |
| 1218 | |
| 1219 | /* |
| 1220 | * sysctl helper routine for kern.forkfsleep node. Ensures that the |
| 1221 | * given value is not too large or two small, and is at least one |
| 1222 | * timer tick if not zero. |
| 1223 | */ |
| 1224 | static int |
| 1225 | sysctl_kern_forkfsleep(SYSCTLFN_ARGS) |
| 1226 | { |
| 1227 | /* userland sees value in ms, internally is in ticks */ |
| 1228 | extern int forkfsleep; /* defined in kern/kern_fork.c */ |
| 1229 | int error, timo, lsleep; |
| 1230 | struct sysctlnode node; |
| 1231 | |
| 1232 | lsleep = forkfsleep * 1000 / hz; |
| 1233 | node = *rnode; |
| 1234 | node.sysctl_data = &lsleep; |
| 1235 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1236 | if (error || newp == NULL) |
| 1237 | return (error); |
| 1238 | |
| 1239 | /* refuse negative values, and overly 'long time' */ |
| 1240 | if (lsleep < 0 || lsleep > MAXSLP * 1000) |
| 1241 | return (EINVAL); |
| 1242 | |
| 1243 | timo = mstohz(lsleep); |
| 1244 | |
| 1245 | /* if the interval is >0 ms && <1 tick, use 1 tick */ |
| 1246 | if (lsleep != 0 && timo == 0) |
| 1247 | forkfsleep = 1; |
| 1248 | else |
| 1249 | forkfsleep = timo; |
| 1250 | |
| 1251 | return (0); |
| 1252 | } |
| 1253 | |
| 1254 | /* |
| 1255 | * sysctl helper routine for kern.root_partition |
| 1256 | */ |
| 1257 | static int |
| 1258 | sysctl_kern_root_partition(SYSCTLFN_ARGS) |
| 1259 | { |
| 1260 | int rootpart = DISKPART(rootdev); |
| 1261 | struct sysctlnode node = *rnode; |
| 1262 | |
| 1263 | node.sysctl_data = &rootpart; |
| 1264 | return (sysctl_lookup(SYSCTLFN_CALL(&node))); |
| 1265 | } |
| 1266 | |
| 1267 | /* |
| 1268 | * sysctl helper function for kern.drivers |
| 1269 | */ |
| 1270 | static int |
| 1271 | sysctl_kern_drivers(SYSCTLFN_ARGS) |
| 1272 | { |
| 1273 | int error; |
| 1274 | size_t buflen; |
| 1275 | struct kinfo_drivers kd; |
| 1276 | char *start, *where; |
| 1277 | const char *dname; |
| 1278 | int i; |
| 1279 | extern struct devsw_conv *devsw_conv; |
| 1280 | extern int max_devsw_convs; |
| 1281 | |
| 1282 | start = where = oldp; |
| 1283 | buflen = *oldlenp; |
| 1284 | if (where == NULL) { |
| 1285 | *oldlenp = max_devsw_convs * sizeof kd; |
| 1286 | return 0; |
| 1287 | } |
| 1288 | |
| 1289 | /* |
| 1290 | * An array of kinfo_drivers structures |
| 1291 | */ |
| 1292 | error = 0; |
| 1293 | sysctl_unlock(); |
| 1294 | mutex_enter(&device_lock); |
| 1295 | for (i = 0; i < max_devsw_convs; i++) { |
| 1296 | dname = devsw_conv[i].d_name; |
| 1297 | if (dname == NULL) |
| 1298 | continue; |
| 1299 | if (buflen < sizeof kd) { |
| 1300 | error = ENOMEM; |
| 1301 | break; |
| 1302 | } |
| 1303 | memset(&kd, 0, sizeof(kd)); |
| 1304 | kd.d_bmajor = devsw_conv[i].d_bmajor; |
| 1305 | kd.d_cmajor = devsw_conv[i].d_cmajor; |
| 1306 | strlcpy(kd.d_name, dname, sizeof kd.d_name); |
| 1307 | mutex_exit(&device_lock); |
| 1308 | error = dcopyout(l, &kd, where, sizeof kd); |
| 1309 | mutex_enter(&device_lock); |
| 1310 | if (error != 0) |
| 1311 | break; |
| 1312 | buflen -= sizeof kd; |
| 1313 | where += sizeof kd; |
| 1314 | } |
| 1315 | mutex_exit(&device_lock); |
| 1316 | sysctl_relock(); |
| 1317 | *oldlenp = where - start; |
| 1318 | return error; |
| 1319 | } |
| 1320 | |
| 1321 | static int |
| 1322 | sysctl_security_setidcore(SYSCTLFN_ARGS) |
| 1323 | { |
| 1324 | int newsize, error; |
| 1325 | struct sysctlnode node; |
| 1326 | |
| 1327 | node = *rnode; |
| 1328 | node.sysctl_data = &newsize; |
| 1329 | newsize = *(int *)rnode->sysctl_data; |
| 1330 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1331 | if (error || newp == NULL) |
| 1332 | return error; |
| 1333 | |
| 1334 | if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, |
| 1335 | 0, NULL, NULL, NULL)) |
| 1336 | return (EPERM); |
| 1337 | |
| 1338 | *(int *)rnode->sysctl_data = newsize; |
| 1339 | |
| 1340 | return 0; |
| 1341 | } |
| 1342 | |
| 1343 | static int |
| 1344 | sysctl_security_setidcorename(SYSCTLFN_ARGS) |
| 1345 | { |
| 1346 | int error; |
| 1347 | char *newsetidcorename; |
| 1348 | struct sysctlnode node; |
| 1349 | |
| 1350 | newsetidcorename = PNBUF_GET(); |
| 1351 | node = *rnode; |
| 1352 | node.sysctl_data = newsetidcorename; |
| 1353 | memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN); |
| 1354 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1355 | if (error || newp == NULL) { |
| 1356 | goto out; |
| 1357 | } |
| 1358 | if (kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_SETIDCORE, |
| 1359 | 0, NULL, NULL, NULL)) { |
| 1360 | error = EPERM; |
| 1361 | goto out; |
| 1362 | } |
| 1363 | if (strlen(newsetidcorename) == 0) { |
| 1364 | error = EINVAL; |
| 1365 | goto out; |
| 1366 | } |
| 1367 | memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN); |
| 1368 | out: |
| 1369 | PNBUF_PUT(newsetidcorename); |
| 1370 | return error; |
| 1371 | } |
| 1372 | |
| 1373 | /* |
| 1374 | * sysctl helper routine for kern.cp_id node. Maps cpus to their |
| 1375 | * cpuids. |
| 1376 | */ |
| 1377 | static int |
| 1378 | sysctl_kern_cpid(SYSCTLFN_ARGS) |
| 1379 | { |
| 1380 | struct sysctlnode node = *rnode; |
| 1381 | uint64_t *cp_id = NULL; |
| 1382 | int error, n = ncpu; |
| 1383 | struct cpu_info *ci; |
| 1384 | CPU_INFO_ITERATOR cii; |
| 1385 | |
| 1386 | /* |
| 1387 | * Here you may either retrieve a single cpu id or the whole |
| 1388 | * set. The size you get back when probing depends on what |
| 1389 | * you ask for. |
| 1390 | */ |
| 1391 | switch (namelen) { |
| 1392 | case 0: |
| 1393 | node.sysctl_size = n * sizeof(uint64_t); |
| 1394 | n = -2; /* ALL */ |
| 1395 | break; |
| 1396 | case 1: |
| 1397 | if (name[0] < 0 || name[0] >= n) |
| 1398 | return (ENOENT); /* ENOSUCHPROCESSOR */ |
| 1399 | node.sysctl_size = sizeof(uint64_t); |
| 1400 | n = name[0]; |
| 1401 | /* |
| 1402 | * adjust these so that sysctl_lookup() will be happy |
| 1403 | */ |
| 1404 | name++; |
| 1405 | namelen--; |
| 1406 | break; |
| 1407 | default: |
| 1408 | return (EINVAL); |
| 1409 | } |
| 1410 | |
| 1411 | cp_id = kmem_alloc(node.sysctl_size, KM_SLEEP); |
| 1412 | if (cp_id == NULL) |
| 1413 | return (ENOMEM); |
| 1414 | node.sysctl_data = cp_id; |
| 1415 | memset(cp_id, 0, node.sysctl_size); |
| 1416 | |
| 1417 | for (CPU_INFO_FOREACH(cii, ci)) { |
| 1418 | if (n <= 0) |
| 1419 | cp_id[0] = cpu_index(ci); |
| 1420 | /* |
| 1421 | * if a specific processor was requested and we just |
| 1422 | * did it, we're done here |
| 1423 | */ |
| 1424 | if (n == 0) |
| 1425 | break; |
| 1426 | /* |
| 1427 | * if doing "all", skip to next cp_id slot for next processor |
| 1428 | */ |
| 1429 | if (n == -2) |
| 1430 | cp_id++; |
| 1431 | /* |
| 1432 | * if we're doing a specific processor, we're one |
| 1433 | * processor closer |
| 1434 | */ |
| 1435 | if (n > 0) |
| 1436 | n--; |
| 1437 | } |
| 1438 | |
| 1439 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1440 | kmem_free(node.sysctl_data, node.sysctl_size); |
| 1441 | return (error); |
| 1442 | } |
| 1443 | |
| 1444 | /* |
| 1445 | * sysctl helper routine for hw.usermem and hw.usermem64. Values are |
| 1446 | * calculate on the fly taking into account integer overflow and the |
| 1447 | * current wired count. |
| 1448 | */ |
| 1449 | static int |
| 1450 | sysctl_hw_usermem(SYSCTLFN_ARGS) |
| 1451 | { |
| 1452 | u_int ui; |
| 1453 | u_quad_t uq; |
| 1454 | struct sysctlnode node; |
| 1455 | |
| 1456 | node = *rnode; |
| 1457 | switch (rnode->sysctl_num) { |
| 1458 | case HW_USERMEM: |
| 1459 | if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE)) |
| 1460 | ui = UINT_MAX; |
| 1461 | else |
| 1462 | ui *= PAGE_SIZE; |
| 1463 | node.sysctl_data = &ui; |
| 1464 | break; |
| 1465 | case HW_USERMEM64: |
| 1466 | uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE; |
| 1467 | node.sysctl_data = &uq; |
| 1468 | break; |
| 1469 | default: |
| 1470 | return (EINVAL); |
| 1471 | } |
| 1472 | |
| 1473 | return (sysctl_lookup(SYSCTLFN_CALL(&node))); |
| 1474 | } |
| 1475 | |
| 1476 | /* |
| 1477 | * sysctl helper routine for kern.cnmagic node. Pulls the old value |
| 1478 | * out, encoded, and stuffs the new value in for decoding. |
| 1479 | */ |
| 1480 | static int |
| 1481 | sysctl_hw_cnmagic(SYSCTLFN_ARGS) |
| 1482 | { |
| 1483 | char magic[CNS_LEN]; |
| 1484 | int error; |
| 1485 | struct sysctlnode node; |
| 1486 | |
| 1487 | if (oldp) |
| 1488 | cn_get_magic(magic, CNS_LEN); |
| 1489 | node = *rnode; |
| 1490 | node.sysctl_data = &magic[0]; |
| 1491 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1492 | if (error || newp == NULL) |
| 1493 | return (error); |
| 1494 | |
| 1495 | return (cn_set_magic(magic)); |
| 1496 | } |
| 1497 | |
| 1498 | /* |
| 1499 | * ******************************************************************** |
| 1500 | * section 3: public helper routines that are used for more than one |
| 1501 | * node |
| 1502 | * ******************************************************************** |
| 1503 | */ |
| 1504 | |
| 1505 | /* |
| 1506 | * sysctl helper routine for the kern.root_device node and some ports' |
| 1507 | * machdep.root_device nodes. |
| 1508 | */ |
| 1509 | int |
| 1510 | sysctl_root_device(SYSCTLFN_ARGS) |
| 1511 | { |
| 1512 | struct sysctlnode node; |
| 1513 | |
| 1514 | node = *rnode; |
| 1515 | node.sysctl_data = __UNCONST(device_xname(root_device)); |
| 1516 | node.sysctl_size = strlen(device_xname(root_device)) + 1; |
| 1517 | return (sysctl_lookup(SYSCTLFN_CALL(&node))); |
| 1518 | } |
| 1519 | |
| 1520 | /* |
| 1521 | * sysctl helper routine for kern.consdev, dependent on the current |
| 1522 | * state of the console. Also used for machdep.console_device on some |
| 1523 | * ports. |
| 1524 | */ |
| 1525 | int |
| 1526 | sysctl_consdev(SYSCTLFN_ARGS) |
| 1527 | { |
| 1528 | dev_t consdev; |
| 1529 | uint32_t oconsdev; |
| 1530 | struct sysctlnode node; |
| 1531 | |
| 1532 | if (cn_tab != NULL) |
| 1533 | consdev = cn_tab->cn_dev; |
| 1534 | else |
| 1535 | consdev = NODEV; |
| 1536 | node = *rnode; |
| 1537 | switch (*oldlenp) { |
| 1538 | case sizeof(consdev): |
| 1539 | node.sysctl_data = &consdev; |
| 1540 | node.sysctl_size = sizeof(consdev); |
| 1541 | break; |
| 1542 | case sizeof(oconsdev): |
| 1543 | oconsdev = (uint32_t)consdev; |
| 1544 | node.sysctl_data = &oconsdev; |
| 1545 | node.sysctl_size = sizeof(oconsdev); |
| 1546 | break; |
| 1547 | default: |
| 1548 | return EINVAL; |
| 1549 | } |
| 1550 | return (sysctl_lookup(SYSCTLFN_CALL(&node))); |
| 1551 | } |
| 1552 | |
| 1553 | /* |
| 1554 | * ******************************************************************** |
| 1555 | * section 4: support for some helpers |
| 1556 | * ******************************************************************** |
| 1557 | */ |
| 1558 | |
| 1559 | |
| 1560 | /* |
| 1561 | * Fill in a kinfo_lwp structure for the specified lwp. |
| 1562 | */ |
| 1563 | static void |
| 1564 | fill_lwp(struct lwp *l, struct kinfo_lwp *kl) |
| 1565 | { |
| 1566 | struct proc *p = l->l_proc; |
| 1567 | struct timeval tv; |
| 1568 | |
| 1569 | KASSERT(lwp_locked(l, NULL)); |
| 1570 | |
| 1571 | memset(kl, 0, sizeof(*kl)); |
| 1572 | |
| 1573 | kl->l_forw = 0; |
| 1574 | kl->l_back = 0; |
| 1575 | kl->l_laddr = PTRTOUINT64(l); |
| 1576 | kl->l_addr = PTRTOUINT64(l->l_addr); |
| 1577 | kl->l_stat = l->l_stat; |
| 1578 | kl->l_lid = l->l_lid; |
| 1579 | kl->l_flag = L_INMEM; |
| 1580 | kl->l_flag |= sysctl_map_flags(sysctl_lwpprflagmap, l->l_prflag); |
| 1581 | kl->l_flag |= sysctl_map_flags(sysctl_lwpflagmap, l->l_flag); |
| 1582 | |
| 1583 | kl->l_swtime = l->l_swtime; |
| 1584 | kl->l_slptime = l->l_slptime; |
| 1585 | if (l->l_stat == LSONPROC) |
| 1586 | kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags; |
| 1587 | else |
| 1588 | kl->l_schedflags = 0; |
| 1589 | kl->l_priority = lwp_eprio(l); |
| 1590 | kl->l_usrpri = l->l_priority; |
| 1591 | if (l->l_wchan) |
| 1592 | strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg)); |
| 1593 | kl->l_wchan = PTRTOUINT64(l->l_wchan); |
| 1594 | kl->l_cpuid = cpu_index(l->l_cpu); |
| 1595 | bintime2timeval(&l->l_rtime, &tv); |
| 1596 | kl->l_rtime_sec = tv.tv_sec; |
| 1597 | kl->l_rtime_usec = tv.tv_usec; |
| 1598 | kl->l_cpticks = l->l_cpticks; |
| 1599 | kl->l_pctcpu = l->l_pctcpu; |
| 1600 | kl->l_pid = p->p_pid; |
| 1601 | if (l->l_name == NULL) |
| 1602 | kl->l_name[0] = '\0'; |
| 1603 | else |
| 1604 | strlcpy(kl->l_name, l->l_name, sizeof(kl->l_name)); |
| 1605 | } |
| 1606 | |