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1c79356b 1/*
39236c6e 2 * Copyright (c) 2000-2013 Apple Inc. All rights reserved.
5d5c5d0d 3 *
2d21ac55 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b 5 *
2d21ac55
A		 6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
8f6c56a5 14 *
2d21ac55
A		 15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5
A		 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55
A		 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
8f6c56a5 25 *
2d21ac55 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b
A		 27 */
28/* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
29/*
30 * Copyright (c) 1987, 1991, 1993
31 * The Regents of the University of California. All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. All advertising materials mentioning features or use of this software
42 * must display the following acknowledgement:
43 * This product includes software developed by the University of
44 * California, Berkeley and its contributors.
45 * 4. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 * @(#)kern_malloc.c 8.4 (Berkeley) 5/20/95
62 */
2d21ac55
A		 63/*
64 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
65 * support for mandatory and extensible security protections. This notice
66 * is included in support of clause 2.2 (b) of the Apple Public License,
67 * Version 2.0.
68 */
1c79356b
A		 69
70#include <sys/param.h>
71#include <sys/malloc.h>
72
73#include <sys/socket.h>
74#include <sys/socketvar.h>
75
76#include <net/route.h>
fe8ab488 77#include <net/necp.h>
1c79356b
A		 78
79#include <netinet/in.h>
80#include <netinet/in_systm.h>
81#include <netinet/ip.h>
82#include <netinet/in_pcb.h>
39236c6e 83#include <netinet/flow_divert.h>
1c79356b 84
55e303ae
A		 85#include <sys/event.h>
86#include <sys/eventvar.h>
87
91447636
A		 88#include <sys/proc_internal.h>
89#include <sys/mount_internal.h>
90#include <sys/vnode_internal.h>
91#include <sys/ubc_internal.h>
1c79356b 92#include <sys/namei.h>
91447636 93#include <sys/file_internal.h>
1c79356b
A		 94#include <sys/filedesc.h>
95#include <sys/tty.h>
9bccf70c 96#include <sys/quota.h>
91447636 97#include <sys/uio_internal.h>
0c530ab8 98#include <sys/resourcevar.h>
2d21ac55 99#include <sys/signalvar.h>
1c79356b 100
9bccf70c 101#include <hfs/hfs_cnode.h>
1c79356b 102
55e303ae 103#include <miscfs/specfs/specdev.h>
1c79356b
A		 104
105#include <nfs/rpcv2.h>
106#include <nfs/nfsproto.h>
107#include <nfs/nfsnode.h>
108#include <nfs/nfsmount.h>
1c79356b 109
d7e50217
A		 110#include <vfs/vfs_journal.h>
111
1c79356b
A		 112#include <mach/mach_types.h>
113
114#include <kern/zalloc.h>
115#include <kern/kalloc.h>
116
39236c6e 117void kmeminit(void);
1c79356b 118
2d21ac55
A		 119/* Strings corresponding to types of memory.
120 * Must be in synch with the #defines is sys/malloc.h
121 * NOTE - the reason we pass null strings in some cases is to reduce of foot
122 * print as much as possible for systems where a tiny kernel is needed.
123 * todo - We should probably redsign this and use enums for our types and only
124 * include types needed for that configuration of the kernel. This can't be
125 * done without some kind of kpi since several types are hardwired and exported
126 * (for example see types M_HFSMNT, M_UDFMNT, M_TEMP, etc in sys/malloc.h)
127 */
128const char *memname[] = {
129 "free", /* 0 M_FREE */
130 "mbuf", /* 1 M_MBUF */
131 "devbuf", /* 2 M_DEVBUF */
132 "socket", /* 3 M_SOCKET */
133 "pcb", /* 4 M_PCB */
134 "routetbl", /* 5 M_RTABLE */
135 "hosttbl", /* 6 M_HTABLE */
136 "fragtbl", /* 7 M_FTABLE */
137 "zombie", /* 8 M_ZOMBIE */
138 "ifaddr", /* 9 M_IFADDR */
139 "soopts", /* 10 M_SOOPTS */
140 "soname", /* 11 M_SONAME */
141 "namei", /* 12 M_NAMEI */
142 "gprof", /* 13 M_GPROF */
143 "ioctlops", /* 14 M_IOCTLOPS */
144 "mapmem", /* 15 M_MAPMEM */
145 "cred", /* 16 M_CRED */
146 "pgrp", /* 17 M_PGRP */
147 "session", /* 18 M_SESSION */
148 "iov32", /* 19 M_IOV32 */
149 "mount", /* 20 M_MOUNT */
150 "fhandle", /* 21 M_FHANDLE */
151#if (NFSCLIENT || NFSSERVER)
152 "NFS req", /* 22 M_NFSREQ */
153 "NFS mount", /* 23 M_NFSMNT */
154 "NFS node", /* 24 M_NFSNODE */
155#else
156 "", /* 22 M_NFSREQ */
157 "", /* 23 M_NFSMNT */
158 "", /* 24 M_NFSNODE */
159#endif
160 "vnodes", /* 25 M_VNODE */
161 "namecache", /* 26 M_CACHE */
162#if QUOTA
163 "UFS quota", /* 27 M_DQUOT */
164#else
165 "", /* 27 M_DQUOT */
166#endif
39236c6e 167 "proc uuid policy", /* 28 M_PROC_UUID_POLICY */
2d21ac55
A		 168#if (SYSV_SEM || SYSV_MSG || SYSV_SHM)
169 "shm", /* 29 M_SHM */
170#else
171 "", /* 29 M_SHM */
172#endif
173 "plimit", /* 30 M_VMMAP */
174 "sigacts", /* 31 M_VMMAPENT */
175 "VM object", /* 32 M_VMOBJ */
176 "VM objhash", /* 33 M_VMOBJHASH */
177 "VM pmap", /* 34 M_VMPMAP */
178 "VM pvmap", /* 35 M_VMPVENT */
179 "VM pager", /* 36 M_VMPAGER */
180 "VM pgdata", /* 37 M_VMPGDATA */
181 "fileproc", /* 38 M_FILEPROC */
182 "file desc", /* 39 M_FILEDESC */
183 "lockf", /* 40 M_LOCKF */
184 "proc", /* 41 M_PROC */
185 "pstats", /* 42 M_SUBPROC */
186 "LFS segment", /* 43 M_SEGMENT */
187 "LFS node", /* 44 M_LFSNODE */
2d21ac55 188 "", /* 45 M_FFSNODE */
2d21ac55
A		 189 "MFS node", /* 46 M_MFSNODE */
190 "NQNFS Lease", /* 47 M_NQLEASE */
191 "NQNFS Host", /* 48 M_NQMHOST */
192 "Export Host", /* 49 M_NETADDR */
193#if (NFSCLIENT || NFSSERVER)
194 "NFS srvsock", /* 50 M_NFSSVC */
195 "NFS uid", /* 51 M_NFSUID */
196 "NFS daemon", /* 52 M_NFSD */
197#else
198 "", /* 50 M_NFSSVC */
199 "", /* 51 M_NFSUID */
200 "", /* 52 M_NFSD */
201#endif
202 "ip_moptions", /* 53 M_IPMOPTS */
203 "in_multi", /* 54 M_IPMADDR */
204 "ether_multi", /* 55 M_IFMADDR */
205 "mrt", /* 56 M_MRTABLE */
b0d623f7
A		 206 "", /* 57 unused entry */
207 "", /* 58 unused entry */
2d21ac55
A		 208#if (NFSCLIENT || NFSSERVER)
209 "NFSV3 srvdesc",/* 59 M_NFSRVDESC */
210 "NFSV3 diroff", /* 60 M_NFSDIROFF */
211 "NFSV3 bigfh", /* 61 M_NFSBIGFH */
212#else
213 "", /* 59 M_NFSRVDESC */
214 "", /* 60 M_NFSDIROFF */
215 "", /* 61 M_NFSBIGFH */
216#endif
217 "MSDOSFS mount",/* 62 M_MSDOSFSMNT */
218 "MSDOSFS fat", /* 63 M_MSDOSFSFAT */
219 "MSDOSFS node", /* 64 M_MSDOSFSNODE */
220 "ttys", /* 65 M_TTYS */
221 "exec", /* 66 M_EXEC */
222 "miscfs mount", /* 67 M_MISCFSMNT */
223 "miscfs node", /* 68 M_MISCFSNODE */
224 "adosfs mount", /* 69 M_ADOSFSMNT */
225 "adosfs node", /* 70 M_ADOSFSNODE */
226 "adosfs anode", /* 71 M_ANODE */
227 "buf hdrs", /* 72 M_BUFHDR */
228 "ofile tabl", /* 73 M_OFILETABL */
229 "mbuf clust", /* 74 M_MCLUST */
230#if HFS
231 "HFS mount", /* 75 M_HFSMNT */
232 "HFS node", /* 76 M_HFSNODE */
233 "HFS fork", /* 77 M_HFSFORK */
234#else
235 "", /* 75 M_HFSMNT */
236 "", /* 76 M_HFSNODE */
237 "", /* 77 M_HFSFORK */
238#endif
39236c6e
A		 239 "", /* 78 unused */
240 "", /* 79 unused */
2d21ac55
A		 241 "temp", /* 80 M_TEMP */
242 "key mgmt", /* 81 M_SECA */
243 "DEVFS", /* 82 M_DEVFS */
244 "IpFw/IpAcct", /* 83 M_IPFW */
245 "UDF node", /* 84 M_UDFNODE */
246 "UDF mount", /* 85 M_UDFMNT */
247#if INET6
248 "IPv6 NDP", /* 86 M_IP6NDP */
249 "IPv6 options", /* 87 M_IP6OPT */
250 "IPv6 Misc", /* 88 M_IP6MISC */
251#else
252 "", /* 86 M_IP6NDP */
253 "", /* 87 M_IP6OPT */
254 "", /* 88 M_IP6MISC */
255#endif
256 "TCP Segment Q",/* 89 M_TSEGQ */
257 "IGMP state", /* 90 M_IGMP */
258#if JOURNALING
259 "Journal", /* 91 M_JNL_JNL */
260 "Transaction", /* 92 M_JNL_TR */
261#else
262 "", /* 91 M_JNL_JNL */
263 "", /* 92 M_JNL_TR */
264#endif
265 "specinfo", /* 93 M_SPECINFO */
266 "kqueue", /* 94 M_KQUEUE */
267#if HFS
268 "HFS dirhint", /* 95 M_HFSDIRHINT */
269#else
270 "", /* 95 M_HFSDIRHINT */
271#endif
272 "cluster_read", /* 96 M_CLRDAHEAD */
273 "cluster_write",/* 97 M_CLWRBEHIND */
274 "iov64", /* 98 M_IOV64 */
275 "fileglob", /* 99 M_FILEGLOB */
276 "kauth", /* 100 M_KAUTH */
277 "dummynet", /* 101 M_DUMMYNET */
b0d623f7 278 "", /* 102 M_UNSAFEFS */
2d21ac55
A		 279 "macpipelabel", /* 103 M_MACPIPELABEL */
280 "mactemp", /* 104 M_MACTEMP */
281 "sbuf", /* 105 M_SBUF */
282 "extattr", /* 106 M_EXTATTR */
283 "lctx", /* 107 M_LCTX */
284#if TRAFFIC_MGT
285 "traffic_mgt", /* 108 M_TRAFFIC_MGT */
286#else
287 "", /* 108 M_TRAFFIC_MGT */
288#endif
b0d623f7
A		 289#if HFS_COMPRESSION
290 "decmpfs_cnode",/* 109 M_DECMPFS_CNODE */
291#else
292 "", /* 109 M_DECMPFS_CNODE */
293#endif /* HFS_COMPRESSION */
6d2010ae
A		 294 "ipmfilter", /* 110 M_INMFILTER */
295 "ipmsource", /* 111 M_IPMSOURCE */
296 "in6mfilter", /* 112 M_IN6MFILTER */
297 "ip6mopts", /* 113 M_IP6MOPTS */
298 "ip6msource", /* 114 M_IP6MSOURCE */
39236c6e
A		 299#if FLOW_DIVERT
300 "flow_divert_pcb", /* 115 M_FLOW_DIVERT_PCB */
301 "flow_divert_group", /* 116 M_FLOW_DIVERT_GROUP */
302#else
303 "", /* 115 M_FLOW_DIVERT_PCB */
304 "", /* 116 M_FLOW_DIVERT_GROUP */
305#endif
306 "ip6cga", /* 117 M_IP6CGA */
fe8ab488
A		 307#if NECP
308 "necp", /* 118 M_NECP */
309 "necp_session_policy", /* 119 M_NECP_SESSION_POLICY */
310 "necp_socket_policy", /* 120 M_NECP_SOCKET_POLICY */
311 "necp_ip_policy", /* 121 M_NECP_IP_POLICY */
312#else
313 "", /* 118 M_NECP */
314 "", /* 119 M_NECP_SESSION_POLICY */
315 "", /* 120 M_NECP_SOCKET_POLICY */
316 "", /* 121 M_NECP_IP_POLICY */
317#endif
318 "fdvnodedata" /* 122 M_FD_VN_DATA */
319 "fddirbuf", /* 123 M_FD_DIRBUF */
320 ""
2d21ac55
A		 321};
322
323/* for use with kmzones.kz_zalloczone */
6d2010ae 324#define KMZ_CREATEZONE_ACCT ((void *)-3)
1c79356b
A		 325#define KMZ_CREATEZONE ((void *)-2)
326#define KMZ_LOOKUPZONE ((void *)-1)
2d21ac55 327#define KMZ_MALLOC ((void *)0)
1c79356b 328#define KMZ_SHAREZONE ((void *)1)
2d21ac55
A		 329
330struct kmzones {
331 size_t kz_elemsize;
332 void *kz_zalloczone;
0b4c1975 333 boolean_t kz_noencrypt;
1c79356b
A		 334} kmzones[M_LAST] = {
335#define SOS(sname) sizeof (struct sname)
336#define SOX(sname) -1
0b4c1975
A		 337 { -1, 0, FALSE }, /* 0 M_FREE */
338 { MSIZE, KMZ_CREATEZONE, FALSE }, /* 1 M_MBUF */
339 { 0, KMZ_MALLOC, FALSE }, /* 2 M_DEVBUF */
340 { SOS(socket), KMZ_CREATEZONE, TRUE }, /* 3 M_SOCKET */
341 { SOS(inpcb), KMZ_LOOKUPZONE, TRUE }, /* 4 M_PCB */
342 { M_MBUF, KMZ_SHAREZONE, FALSE }, /* 5 M_RTABLE */
343 { M_MBUF, KMZ_SHAREZONE, FALSE }, /* 6 M_HTABLE */
344 { M_MBUF, KMZ_SHAREZONE, FALSE }, /* 7 M_FTABLE */
345 { SOS(rusage), KMZ_CREATEZONE, TRUE }, /* 8 M_ZOMBIE */
346 { 0, KMZ_MALLOC, FALSE }, /* 9 M_IFADDR */
347 { M_MBUF, KMZ_SHAREZONE, FALSE }, /* 10 M_SOOPTS */
348 { 0, KMZ_MALLOC, FALSE }, /* 11 M_SONAME */
349 { MAXPATHLEN, KMZ_CREATEZONE, FALSE }, /* 12 M_NAMEI */
350 { 0, KMZ_MALLOC, FALSE }, /* 13 M_GPROF */
351 { 0, KMZ_MALLOC, FALSE }, /* 14 M_IOCTLOPS */
352 { 0, KMZ_MALLOC, FALSE }, /* 15 M_MAPMEM */
353 { SOS(ucred), KMZ_CREATEZONE, FALSE }, /* 16 M_CRED */
354 { SOS(pgrp), KMZ_CREATEZONE, FALSE }, /* 17 M_PGRP */
355 { SOS(session), KMZ_CREATEZONE, FALSE }, /* 18 M_SESSION */
356 { SOS(user32_iovec), KMZ_LOOKUPZONE, FALSE },/* 19 M_IOV32 */
357 { SOS(mount), KMZ_CREATEZONE, FALSE }, /* 20 M_MOUNT */
358 { 0, KMZ_MALLOC, FALSE }, /* 21 M_FHANDLE */
2d21ac55 359#if (NFSCLIENT || NFSSERVER)
0b4c1975 360 { SOS(nfsreq), KMZ_CREATEZONE, FALSE }, /* 22 M_NFSREQ */
6d2010ae 361 { SOS(nfsmount),KMZ_CREATEZONE, FALSE }, /* 23 M_NFSMNT */
0b4c1975 362 { SOS(nfsnode), KMZ_CREATEZONE, FALSE }, /* 24 M_NFSNODE */
2d21ac55 363#else
0b4c1975
A		 364 { 0, KMZ_MALLOC, FALSE }, /* 22 M_NFSREQ */
365 { 0, KMZ_MALLOC, FALSE }, /* 23 M_NFSMNT */
366 { 0, KMZ_MALLOC, FALSE }, /* 24 M_NFSNODE */
2d21ac55 367#endif
0b4c1975 368 { SOS(vnode), KMZ_CREATEZONE, TRUE }, /* 25 M_VNODE */
6d2010ae 369 { SOS(namecache), KMZ_CREATEZONE, FALSE }, /* 26 M_CACHE */
2d21ac55 370#if QUOTA
0b4c1975 371 { SOX(dquot), KMZ_LOOKUPZONE, FALSE }, /* 27 M_DQUOT */
2d21ac55 372#else
0b4c1975 373 { 0, KMZ_MALLOC, FALSE }, /* 27 M_DQUOT */
2d21ac55 374#endif
39236c6e 375 { 0, KMZ_MALLOC, FALSE }, /* 28 M_PROC_UUID_POLICY */
6d2010ae 376 { 0, KMZ_MALLOC, FALSE }, /* 29 M_SHM */
0b4c1975 377 { SOS(plimit), KMZ_CREATEZONE, TRUE }, /* 30 M_PLIMIT */
6d2010ae 378 { SOS(sigacts), KMZ_CREATEZONE_ACCT, TRUE }, /* 31 M_SIGACTS */
0b4c1975
A		 379 { 0, KMZ_MALLOC, FALSE }, /* 32 M_VMOBJ */
380 { 0, KMZ_MALLOC, FALSE }, /* 33 M_VMOBJHASH */
381 { 0, KMZ_MALLOC, FALSE }, /* 34 M_VMPMAP */
382 { 0, KMZ_MALLOC, FALSE }, /* 35 M_VMPVENT */
383 { 0, KMZ_MALLOC, FALSE }, /* 36 M_VMPAGER */
384 { 0, KMZ_MALLOC, FALSE }, /* 37 M_VMPGDATA */
6d2010ae
A		 385 { SOS(fileproc),KMZ_CREATEZONE_ACCT, TRUE }, /* 38 M_FILEPROC */
386 { SOS(filedesc),KMZ_CREATEZONE_ACCT, TRUE }, /* 39 M_FILEDESC */
387 { SOX(lockf), KMZ_CREATEZONE_ACCT, TRUE }, /* 40 M_LOCKF */
0b4c1975
A		 388 { SOS(proc), KMZ_CREATEZONE, FALSE }, /* 41 M_PROC */
389 { SOS(pstats), KMZ_CREATEZONE, TRUE }, /* 42 M_PSTATS */
390 { 0, KMZ_MALLOC, FALSE }, /* 43 M_SEGMENT */
391 { M_FFSNODE, KMZ_SHAREZONE, FALSE }, /* 44 M_LFSNODE */
392 { 0, KMZ_MALLOC, FALSE }, /* 45 M_FFSNODE */
393 { M_FFSNODE, KMZ_SHAREZONE, FALSE }, /* 46 M_MFSNODE */
394 { 0, KMZ_MALLOC, FALSE }, /* 47 M_NQLEASE */
395 { 0, KMZ_MALLOC, FALSE }, /* 48 M_NQMHOST */
396 { 0, KMZ_MALLOC, FALSE }, /* 49 M_NETADDR */
2d21ac55
A		 397#if (NFSCLIENT || NFSSERVER)
398 { SOX(nfsrv_sock),
6d2010ae 399 KMZ_CREATEZONE_ACCT, FALSE }, /* 50 M_NFSSVC */
0b4c1975 400 { 0, KMZ_MALLOC, FALSE }, /* 51 M_NFSUID */
2d21ac55 401 { SOX(nfsrvcache),
6d2010ae 402 KMZ_CREATEZONE_ACCT, FALSE }, /* 52 M_NFSD */
2d21ac55 403#else
0b4c1975
A		 404 { 0, KMZ_MALLOC, FALSE }, /* 50 M_NFSSVC */
405 { 0, KMZ_MALLOC, FALSE }, /* 51 M_NFSUID */
406 { 0, KMZ_MALLOC, FALSE }, /* 52 M_NFSD */
2d21ac55
A		 407#endif
408 { SOX(ip_moptions),
0b4c1975
A		 409 KMZ_LOOKUPZONE, FALSE }, /* 53 M_IPMOPTS */
410 { SOX(in_multi),KMZ_LOOKUPZONE, FALSE }, /* 54 M_IPMADDR */
2d21ac55 411 { SOX(ether_multi),
0b4c1975
A		 412 KMZ_LOOKUPZONE, FALSE }, /* 55 M_IFMADDR */
413 { SOX(mrt), KMZ_CREATEZONE, TRUE }, /* 56 M_MRTABLE */
414 { 0, KMZ_MALLOC, FALSE }, /* 57 unused entry */
415 { 0, KMZ_MALLOC, FALSE }, /* 58 unused entry */
2d21ac55
A		 416#if (NFSCLIENT || NFSSERVER)
417 { SOS(nfsrv_descript),
6d2010ae 418 KMZ_CREATEZONE_ACCT, FALSE }, /* 59 M_NFSRVDESC */
0b4c1975
A		 419 { SOS(nfsdmap), KMZ_CREATEZONE, FALSE }, /* 60 M_NFSDIROFF */
420 { SOS(fhandle), KMZ_LOOKUPZONE, FALSE }, /* 61 M_NFSBIGFH */
2d21ac55 421#else
0b4c1975
A		 422 { 0, KMZ_MALLOC, FALSE }, /* 59 M_NFSRVDESC */
423 { 0, KMZ_MALLOC, FALSE }, /* 60 M_NFSDIROFF */
424 { 0, KMZ_MALLOC, FALSE }, /* 61 M_NFSBIGFH */
2d21ac55 425#endif
0b4c1975
A		 426 { 0, KMZ_MALLOC, FALSE }, /* 62 M_MSDOSFSMNT */
427 { 0, KMZ_MALLOC, FALSE }, /* 63 M_MSDOSFSFAT */
428 { 0, KMZ_MALLOC, FALSE }, /* 64 M_MSDOSFSNODE */
429 { SOS(tty), KMZ_CREATEZONE, FALSE }, /* 65 M_TTYS */
430 { 0, KMZ_MALLOC, FALSE }, /* 66 M_EXEC */
431 { 0, KMZ_MALLOC, FALSE }, /* 67 M_MISCFSMNT */
432 { 0, KMZ_MALLOC, FALSE }, /* 68 M_MISCFSNODE */
433 { 0, KMZ_MALLOC, FALSE }, /* 69 M_ADOSFSMNT */
434 { 0, KMZ_MALLOC, FALSE }, /* 70 M_ADOSFSNODE */
435 { 0, KMZ_MALLOC, FALSE }, /* 71 M_ANODE */
6d2010ae 436 { 0, KMZ_MALLOC, TRUE }, /* 72 M_BUFHDR */
2d21ac55 437 { (NDFILE * OFILESIZE),
6d2010ae 438 KMZ_CREATEZONE_ACCT, FALSE }, /* 73 M_OFILETABL */
0b4c1975 439 { MCLBYTES, KMZ_CREATEZONE, FALSE }, /* 74 M_MCLUST */
2d21ac55 440#if HFS
0b4c1975
A		 441 { SOX(hfsmount),KMZ_LOOKUPZONE, FALSE }, /* 75 M_HFSMNT */
442 { SOS(cnode), KMZ_CREATEZONE, TRUE }, /* 76 M_HFSNODE */
443 { SOS(filefork),KMZ_CREATEZONE, TRUE }, /* 77 M_HFSFORK */
2d21ac55 444#else
0b4c1975
A		 445 { 0, KMZ_MALLOC, FALSE }, /* 75 M_HFSMNT */
446 { 0, KMZ_MALLOC, FALSE }, /* 76 M_HFSNODE */
447 { 0, KMZ_MALLOC, FALSE }, /* 77 M_HFSFORK */
2d21ac55 448#endif
39236c6e
A		 449 { 0, KMZ_MALLOC, FALSE }, /* 78 unused */
450 { 0, KMZ_MALLOC, FALSE }, /* 79 unused */
0b4c1975
A		 451 { 0, KMZ_MALLOC, FALSE }, /* 80 M_TEMP */
452 { 0, KMZ_MALLOC, FALSE }, /* 81 M_SECA */
453 { 0, KMZ_MALLOC, FALSE }, /* 82 M_DEVFS */
454 { 0, KMZ_MALLOC, FALSE }, /* 83 M_IPFW */
455 { 0, KMZ_MALLOC, FALSE }, /* 84 M_UDFNODE */
456 { 0, KMZ_MALLOC, FALSE }, /* 85 M_UDFMOUNT */
457 { 0, KMZ_MALLOC, FALSE }, /* 86 M_IP6NDP */
458 { 0, KMZ_MALLOC, FALSE }, /* 87 M_IP6OPT */
459 { 0, KMZ_MALLOC, FALSE }, /* 88 M_IP6MISC */
460 { 0, KMZ_MALLOC, FALSE }, /* 89 M_TSEGQ */
461 { 0, KMZ_MALLOC, FALSE }, /* 90 M_IGMP */
2d21ac55 462#if JOURNALING
0b4c1975
A		 463 { SOS(journal), KMZ_CREATEZONE, FALSE }, /* 91 M_JNL_JNL */
464 { SOS(transaction), KMZ_CREATEZONE, FALSE }, /* 92 M_JNL_TR */
2d21ac55 465#else
6d2010ae
A		 466 { 0, KMZ_MALLOC, FALSE }, /* 91 M_JNL_JNL */
467 { 0, KMZ_MALLOC, FALSE }, /* 92 M_JNL_TR */
2d21ac55 468#endif
6d2010ae
A		 469 { SOS(specinfo),KMZ_CREATEZONE, TRUE }, /* 93 M_SPECINFO */
470 { SOS(kqueue), KMZ_CREATEZONE, FALSE }, /* 94 M_KQUEUE */
2d21ac55 471#if HFS
6d2010ae 472 { SOS(directoryhint), KMZ_CREATEZONE, TRUE }, /* 95 M_HFSDIRHINT */
2d21ac55 473#else
6d2010ae 474 { 0, KMZ_MALLOC, FALSE }, /* 95 M_HFSDIRHINT */
2d21ac55 475#endif
0b4c1975
A		 476 { SOS(cl_readahead), KMZ_CREATEZONE, TRUE }, /* 96 M_CLRDAHEAD */
477 { SOS(cl_writebehind),KMZ_CREATEZONE, TRUE }, /* 97 M_CLWRBEHIND */
478 { SOS(user64_iovec), KMZ_LOOKUPZONE, FALSE },/* 98 M_IOV64 */
479 { SOS(fileglob), KMZ_CREATEZONE, TRUE }, /* 99 M_FILEGLOB */
480 { 0, KMZ_MALLOC, FALSE }, /* 100 M_KAUTH */
481 { 0, KMZ_MALLOC, FALSE }, /* 101 M_DUMMYNET */
0b4c1975 482 { 0, KMZ_MALLOC, FALSE }, /* 102 M_UNSAFEFS */
0b4c1975
A		 483 { 0, KMZ_MALLOC, FALSE }, /* 103 M_MACPIPELABEL */
484 { 0, KMZ_MALLOC, FALSE }, /* 104 M_MACTEMP */
485 { 0, KMZ_MALLOC, FALSE }, /* 105 M_SBUF */
486 { 0, KMZ_MALLOC, FALSE }, /* 106 M_HFS_EXTATTR */
487 { 0, KMZ_MALLOC, FALSE }, /* 107 M_LCTX */
488 { 0, KMZ_MALLOC, FALSE }, /* 108 M_TRAFFIC_MGT */
b0d623f7 489#if HFS_COMPRESSION
6d2010ae 490 { SOS(decmpfs_cnode),KMZ_CREATEZONE , FALSE}, /* 109 M_DECMPFS_CNODE */
b0d623f7 491#else
0b4c1975 492 { 0, KMZ_MALLOC, FALSE }, /* 109 M_DECMPFS_CNODE */
b0d623f7 493#endif /* HFS_COMPRESSION */
6d2010ae
A		 494 { 0, KMZ_MALLOC, FALSE }, /* 110 M_INMFILTER */
495 { 0, KMZ_MALLOC, FALSE }, /* 111 M_IPMSOURCE */
496 { 0, KMZ_MALLOC, FALSE }, /* 112 M_IN6MFILTER */
497 { 0, KMZ_MALLOC, FALSE }, /* 113 M_IP6MOPTS */
498 { 0, KMZ_MALLOC, FALSE }, /* 114 M_IP6MSOURCE */
39236c6e
A		 499#if FLOW_DIVERT
500 { SOS(flow_divert_pcb), KMZ_CREATEZONE, TRUE }, /* 115 M_FLOW_DIVERT_PCB */
501 { SOS(flow_divert_group), KMZ_CREATEZONE, TRUE }, /* 116 M_FLOW_DIVERT_GROUP */
502#else
503 { 0, KMZ_MALLOC, FALSE }, /* 115 M_FLOW_DIVERT_PCB */
504 { 0, KMZ_MALLOC, FALSE }, /* 116 M_FLOW_DIVERT_GROUP */
505#endif /* FLOW_DIVERT */
506 { 0, KMZ_MALLOC, FALSE }, /* 117 M_IP6CGA */
fe8ab488
A		 507 { 0, KMZ_MALLOC, FALSE }, /* 118 M_NECP */
508#if NECP
509 { SOS(necp_session_policy), KMZ_CREATEZONE, TRUE }, /* 119 M_NECP_SESSION_POLICY */
510 { SOS(necp_kernel_socket_policy), KMZ_CREATEZONE, TRUE }, /* 120 M_NECP_SOCKET_POLICY */
511 { SOS(necp_kernel_ip_output_policy), KMZ_CREATEZONE, TRUE }, /* 121 M_NECP_IP_POLICY */
512#else
513 { 0, KMZ_MALLOC, FALSE }, /* 119 M_NECP_SESSION_POLICY */
514 { 0, KMZ_MALLOC, FALSE }, /* 120 M_NECP_SOCKET_POLICY */
515 { 0, KMZ_MALLOC, FALSE }, /* 121 M_NECP_IP_POLICY */
516#endif /* NECP */
1c79356b
A		 517#undef SOS
518#undef SOX
519};
520
55e303ae 521extern zone_t kalloc_zone(vm_size_t); /* XXX */
1c79356b
A		 522
523/*
524 * Initialize the kernel memory allocator
525 */
526void
527kmeminit(void)
528{
529 struct kmzones *kmz;
530
d7e50217 531 if ((sizeof(kmzones)/sizeof(kmzones[0])) != (sizeof(memname)/sizeof(memname[0]))) {
2d21ac55 532 panic("kmeminit: kmzones has %lu elements but memname has %lu\n",
d7e50217
A		 533 (sizeof(kmzones)/sizeof(kmzones[0])), (sizeof(memname)/sizeof(memname[0])));
534 }
535
1c79356b
A		 536 kmz = kmzones;
537 while (kmz < &kmzones[M_LAST]) {
538/* XXX */
2d21ac55 539 if (kmz->kz_elemsize == (size_t)(-1))
1c79356b
A		 540 ;
541 else
542/* XXX */
6d2010ae
A		 543 if (kmz->kz_zalloczone == KMZ_CREATEZONE ||
544 kmz->kz_zalloczone == KMZ_CREATEZONE_ACCT) {
1c79356b
A		 545 kmz->kz_zalloczone = zinit(kmz->kz_elemsize,
546 1024 * 1024, PAGE_SIZE,
547 memname[kmz - kmzones]);
6d2010ae
A		 548 zone_change(kmz->kz_zalloczone, Z_CALLERACCT,
549 (kmz->kz_zalloczone == KMZ_CREATEZONE_ACCT));
550
0b4c1975
A		 551 if (kmz->kz_noencrypt == TRUE)
552 zone_change(kmz->kz_zalloczone, Z_NOENCRYPT, TRUE);
1c79356b
A		 553 }
554 else if (kmz->kz_zalloczone == KMZ_LOOKUPZONE)
555 kmz->kz_zalloczone = kalloc_zone(kmz->kz_elemsize);
556
557 kmz++;
558 }
559
560 kmz = kmzones;
561 while (kmz < &kmzones[M_LAST]) {
562/* XXX */
2d21ac55 563 if (kmz->kz_elemsize == (size_t)(-1))
1c79356b
A		 564 ;
565 else
566/* XXX */
567 if (kmz->kz_zalloczone == KMZ_SHAREZONE) {
568 kmz->kz_zalloczone =
569 kmzones[kmz->kz_elemsize].kz_zalloczone;
570 kmz->kz_elemsize =
571 kmzones[kmz->kz_elemsize].kz_elemsize;
572 }
573
574 kmz++;
575 }
576}
577
1c79356b
A		 578struct _mhead {
579 size_t mlen;
580 char dat[0];
581};
582
91447636
A		 583void *
584_MALLOC(
1c79356b
A		 585 size_t size,
586 int type,
587 int flags)
588{
39236c6e 589 struct _mhead *hdr = NULL;
6d2010ae 590 size_t memsize = sizeof (*hdr) + size;
1c79356b
A		 591
592 if (type >= M_LAST)
593 panic("_malloc TYPE");
594
595 if (size == 0)
2d21ac55 596 return (NULL);
1c79356b
A		 597
598 if (flags & M_NOWAIT) {
316670eb
A		 599 if (size > memsize) /* overflow detected */
600 return (NULL);
601 else
602 hdr = (void *)kalloc_noblock(memsize);
1c79356b 603 } else {
316670eb
A		 604 if (size > memsize) {
605 /*
606 * We get here when the caller told us to block, waiting for memory but an overflow
607 * has been detected. The caller isn't expecting a NULL return code so we panic
608 * with a descriptive message.
609 */
610 panic("_MALLOC: overflow detected, size %llu ", (uint64_t) size);
611 }
612 else
613 hdr = (void *)kalloc(memsize);
b0d623f7 614
316670eb 615 if (hdr == NULL) {
b0d623f7
A		 616
617 /*
618 * We get here when the caller told us to block waiting for memory, but
619 * kalloc said there's no memory left to get. Generally, this means there's a
620 * leak or the caller asked for an impossibly large amount of memory. Since there's
621 * nothing left to wait for and the caller isn't expecting a NULL return code, we
622 * just panic. This is less than ideal, but returning NULL doesn't help since the
623 * majority of callers don't check the return value and will just dereference the pointer and
624 * trap anyway. We may as well get a more descriptive message out while we can.
625 */
626
627 panic("_MALLOC: kalloc returned NULL (potential leak), size %llu", (uint64_t) size);
628 }
1c79356b 629 }
6d2010ae 630 if (!hdr)
1c79356b
A		 631 return (0);
632
6d2010ae 633 hdr->mlen = memsize;
1c79356b 634
55e303ae 635 if (flags & M_ZERO)
6d2010ae 636 bzero(hdr->dat, size);
55e303ae 637
6d2010ae 638 return (hdr->dat);
1c79356b
A		 639}
640
91447636
A		 641void
642_FREE(
1c79356b
A		 643 void *addr,
644 int type)
645{
646 struct _mhead *hdr;
647
648 if (type >= M_LAST)
649 panic("_free TYPE");
650
9bccf70c
A		 651 if (!addr)
652 return; /* correct (convenient bsd kernel legacy) */
1c79356b
A		 653
654 hdr = addr; hdr--;
91447636 655 kfree(hdr, hdr->mlen);
1c79356b
A		 656}
657
6d2010ae
A		 658void *
659_REALLOC(
660 void *addr,
661 size_t size,
662 int type,
663 int flags)
664{
665 struct _mhead *hdr;
666 void *newaddr;
667 size_t alloc;
668
669 /* realloc(NULL, ...) is equivalent to malloc(...) */
670 if (addr == NULL)
671 return (_MALLOC(size, type, flags));
672
673 /* Allocate a new, bigger (or smaller) block */
674 if ((newaddr = _MALLOC(size, type, flags)) == NULL)
675 return (NULL);
676
677 hdr = addr;
678 --hdr;
679 alloc = hdr->mlen - sizeof (*hdr);
680
681 /* Copy over original contents */
682 bcopy(addr, newaddr, MIN(size, alloc));
683 _FREE(addr, type);
684
685 return (newaddr);
686}
687
91447636
A		 688void *
689_MALLOC_ZONE(
1c79356b
A		 690 size_t size,
691 int type,
692 int flags)
693{
694 struct kmzones *kmz;
695 void *elem;
696
697 if (type >= M_LAST)
698 panic("_malloc_zone TYPE");
699
700 kmz = &kmzones[type];
701 if (kmz->kz_zalloczone == KMZ_MALLOC)
91447636 702 panic("_malloc_zone ZONE: type = %d", type);
1c79356b
A		 703
704/* XXX */
2d21ac55 705 if (kmz->kz_elemsize == (size_t)(-1))
1c79356b
A		 706 panic("_malloc_zone XXX");
707/* XXX */
708 if (size == kmz->kz_elemsize)
709 if (flags & M_NOWAIT) {
710 elem = (void *)zalloc_noblock(kmz->kz_zalloczone);
711 } else {
712 elem = (void *)zalloc(kmz->kz_zalloczone);
713 }
714 else
715 if (flags & M_NOWAIT) {
716 elem = (void *)kalloc_noblock(size);
717 } else {
718 elem = (void *)kalloc(size);
719 }
720
721 return (elem);
722}
723
91447636
A		 724void
725_FREE_ZONE(
1c79356b
A		 726 void *elem,
727 size_t size,
728 int type)
729{
730 struct kmzones *kmz;
731
732 if (type >= M_LAST)
733 panic("FREE_SIZE");
734
735 kmz = &kmzones[type];
736 if (kmz->kz_zalloczone == KMZ_MALLOC)
737 panic("free_zone ZONE");
738
739/* XXX */
2d21ac55 740 if (kmz->kz_elemsize == (size_t)(-1))
1c79356b
A		 741 panic("FREE_SIZE XXX");
742/* XXX */
743 if (size == kmz->kz_elemsize)
91447636 744 zfree(kmz->kz_zalloczone, elem);
1c79356b 745 else
91447636 746 kfree(elem, size);
1c79356b 747}
6d2010ae
A		 748
749#if CONFIG_ZLEAKS
750
751SYSCTL_DECL(_kern_zleak);
752SYSCTL_NODE(_kern, OID_AUTO, zleak, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "zleak");
753
754/*
755 * kern.zleak.active
756 *
757 * Show the status of the zleak subsystem (0 = enabled, 1 = active,
758 * and -1 = failed), and if enabled, allow it to be activated immediately.
759 */
760static int
761sysctl_zleak_active SYSCTL_HANDLER_ARGS
762{
763#pragma unused(arg1, arg2)
764 int oldval, val, error;
765
766 val = oldval = get_zleak_state();
767 error = sysctl_handle_int(oidp, &val, 0, req);
768 if (error || !req->newptr)
769 return (error);
770 /*
771 * Can only be activated if it's off (and not failed.)
772 * Cannot be deactivated once it's on.
773 */
774 if (val == 1 && oldval == 0) {
775 kern_return_t kr = zleak_activate();
776
777 if (KERN_SUCCESS != kr)
778 printf("zleak_active: failed to activate "
779 "live zone leak debugging (%d).\n", kr);
780 } if (val == 0 && oldval == 1) {
781 printf("zleak_active: active, cannot be disabled.\n");
782 return (EINVAL);
783 }
784 return (0);
785}
786
787SYSCTL_PROC(_kern_zleak, OID_AUTO, active,
788 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
789 0, 0, sysctl_zleak_active, "I", "zleak activity");
790
791/*
792 * kern.zleak.max_zonemap_size
793 *
794 * Read the value of the maximum zonemap size in bytes; useful
795 * as the maximum size that zleak.global_threshold and
796 * zleak.zone_threshold should be set to.
797 */
798static int
799sysctl_zleak_max_zonemap_size SYSCTL_HANDLER_ARGS
800{
801 uint64_t zmap_max_size = *(vm_size_t *)arg1;
802
803 return sysctl_handle_quad(oidp, &zmap_max_size, arg2, req);
804}
805
806SYSCTL_PROC(_kern_zleak, OID_AUTO, max_zonemap_size,
807 CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
808 &zleak_max_zonemap_size, 0,
809 sysctl_zleak_max_zonemap_size, "Q", "zleak max zonemap size");
810
811
812static int
813sysctl_zleak_threshold SYSCTL_HANDLER_ARGS
814{
815#pragma unused(oidp, arg2)
816 int error;
817 uint64_t value = *(vm_size_t *)arg1;
818
819 error = sysctl_io_number(req, value, sizeof (value), &value, NULL);
820
821 if (error || !req->newptr)
822 return (error);
823
824 if (value > (uint64_t)zleak_max_zonemap_size)
825 return (ERANGE);
826
827 *(vm_size_t *)arg1 = value;
828 return (0);
829}
830
831/*
832 * kern.zleak.global_threshold
833 *
834 * Set the global zleak threshold size (in bytes). If the zone map
835 * grows larger than this value, zleaks are automatically activated.
836 *
837 * The default value is set in zleak_init().
838 */
839SYSCTL_PROC(_kern_zleak, OID_AUTO, global_threshold,
840 CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED,
841 &zleak_global_tracking_threshold, 0,
842 sysctl_zleak_threshold, "Q", "zleak global threshold");
843
844/*
845 * kern.zleak.zone_threshold
846 *
847 * Set the per-zone threshold size (in bytes) above which any
848 * zone will automatically start zleak tracking.
849 *
850 * The default value is set in zleak_init().
851 *
852 * Setting this variable will have no effect until zleak tracking is
853 * activated (See above.)
854 */
855SYSCTL_PROC(_kern_zleak, OID_AUTO, zone_threshold,
856 CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED,
857 &zleak_per_zone_tracking_threshold, 0,
858 sysctl_zleak_threshold, "Q", "zleak per-zone threshold");
859
860#endif /* CONFIG_ZLEAKS */
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