/*
- * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
* Version 2.0.
*/
-#include <sys/param.h>
+#include <kern/zalloc.h>
+#include <kern/kalloc.h>
+
#include <sys/malloc.h>
+#include <sys/sysctl.h>
-#include <sys/socket.h>
-#include <sys/socketvar.h>
+#include <libkern/libkern.h>
-#include <net/route.h>
+ZONE_VIEW_DEFINE(ZV_NAMEI, "vfs.namei", KHEAP_ID_DATA_BUFFERS, MAXPATHLEN);
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/in_pcb.h>
+static void *
+__MALLOC_ext(
+ size_t size,
+ int type,
+ int flags,
+ vm_allocation_site_t *site,
+ kalloc_heap_t heap)
+{
+ void *addr = NULL;
-#include <sys/event.h>
-#include <sys/eventvar.h>
+ if (type >= M_LAST) {
+ panic("_malloc TYPE");
+ }
-#include <sys/proc_internal.h>
-#include <sys/mount_internal.h>
-#include <sys/vnode_internal.h>
-#include <sys/ubc_internal.h>
-#include <sys/namei.h>
-#include <sys/file_internal.h>
-#include <sys/filedesc.h>
-#include <sys/tty.h>
-#include <sys/quota.h>
-#include <sys/uio_internal.h>
-#include <sys/resourcevar.h>
-#include <sys/signalvar.h>
+ if (size == 0) {
+ return NULL;
+ }
-#include <ufs/ufs/inode.h>
+ static_assert(sizeof(vm_size_t) == sizeof(size_t));
+ static_assert(M_WAITOK == Z_WAITOK);
+ static_assert(M_NOWAIT == Z_NOWAIT);
+ static_assert(M_ZERO == Z_ZERO);
-#include <hfs/hfs_cnode.h>
-#include <isofs/cd9660/cd9660_node.h>
+ addr = kalloc_ext(heap, size,
+ flags & (M_WAITOK | M_NOWAIT | M_ZERO), site).addr;
+ if (__probable(addr)) {
+ return addr;
+ }
-#include <miscfs/specfs/specdev.h>
+ if (flags & (M_NOWAIT | M_NULL)) {
+ return NULL;
+ }
-#include <nfs/rpcv2.h>
-#include <nfs/nfsproto.h>
-#include <nfs/nfsnode.h>
-#include <nfs/nfsmount.h>
+ /*
+ * We get here when the caller told us to block waiting for memory, but
+ * kalloc said there's no memory left to get. Generally, this means there's a
+ * leak or the caller asked for an impossibly large amount of memory. If the caller
+ * is expecting a NULL return code then it should explicitly set the flag M_NULL.
+ * If the caller isn't expecting a NULL return code, we just panic. This is less
+ * than ideal, but returning NULL when the caller isn't expecting it doesn't help
+ * since the majority of callers don't check the return value and will just
+ * dereference the pointer and trap anyway. We may as well get a more
+ * descriptive message out while we can.
+ */
+ panic("_MALLOC: kalloc returned NULL (potential leak), size %llu", (uint64_t) size);
+}
-#include <vfs/vfs_journal.h>
+void *
+__MALLOC(size_t size, int type, int flags, vm_allocation_site_t *site)
+{
+ return __MALLOC_ext(size, type, flags, site, KHEAP_DEFAULT);
+}
-#include <mach/mach_types.h>
+void *
+__REALLOC(
+ void *addr,
+ size_t size,
+ int type __unused,
+ int flags,
+ vm_allocation_site_t *site)
+{
+ addr = kheap_realloc_addr(KHEAP_DEFAULT, addr, size,
+ flags & (M_WAITOK | M_NOWAIT | M_ZERO), site).addr;
-#include <kern/zalloc.h>
-#include <kern/kalloc.h>
+ if (__probable(addr)) {
+ return addr;
+ }
-void kmeminit(void) __attribute__((section("__TEXT, initcode")));
+ if (flags & (M_NOWAIT | M_NULL)) {
+ return NULL;
+ }
-/* Strings corresponding to types of memory.
- * Must be in synch with the #defines is sys/malloc.h
- * NOTE - the reason we pass null strings in some cases is to reduce of foot
- * print as much as possible for systems where a tiny kernel is needed.
- * todo - We should probably redsign this and use enums for our types and only
- * include types needed for that configuration of the kernel. This can't be
- * done without some kind of kpi since several types are hardwired and exported
- * (for example see types M_HFSMNT, M_UDFMNT, M_TEMP, etc in sys/malloc.h)
- */
-const char *memname[] = {
- "free", /* 0 M_FREE */
- "mbuf", /* 1 M_MBUF */
- "devbuf", /* 2 M_DEVBUF */
- "socket", /* 3 M_SOCKET */
- "pcb", /* 4 M_PCB */
- "routetbl", /* 5 M_RTABLE */
- "hosttbl", /* 6 M_HTABLE */
- "fragtbl", /* 7 M_FTABLE */
- "zombie", /* 8 M_ZOMBIE */
- "ifaddr", /* 9 M_IFADDR */
- "soopts", /* 10 M_SOOPTS */
- "soname", /* 11 M_SONAME */
- "namei", /* 12 M_NAMEI */
- "gprof", /* 13 M_GPROF */
- "ioctlops", /* 14 M_IOCTLOPS */
- "mapmem", /* 15 M_MAPMEM */
- "cred", /* 16 M_CRED */
- "pgrp", /* 17 M_PGRP */
- "session", /* 18 M_SESSION */
- "iov32", /* 19 M_IOV32 */
- "mount", /* 20 M_MOUNT */
- "fhandle", /* 21 M_FHANDLE */
-#if (NFSCLIENT || NFSSERVER)
- "NFS req", /* 22 M_NFSREQ */
- "NFS mount", /* 23 M_NFSMNT */
- "NFS node", /* 24 M_NFSNODE */
-#else
- "", /* 22 M_NFSREQ */
- "", /* 23 M_NFSMNT */
- "", /* 24 M_NFSNODE */
-#endif
- "vnodes", /* 25 M_VNODE */
- "namecache", /* 26 M_CACHE */
-#if QUOTA
- "UFS quota", /* 27 M_DQUOT */
-#else
- "", /* 27 M_DQUOT */
-#endif
-#if FFS
- "UFS mount", /* 28 M_UFSMNT */
-#else
- "", /* 28 M_UFSMNT */
-#endif
-#if (SYSV_SEM || SYSV_MSG || SYSV_SHM)
- "shm", /* 29 M_SHM */
-#else
- "", /* 29 M_SHM */
-#endif
- "plimit", /* 30 M_VMMAP */
- "sigacts", /* 31 M_VMMAPENT */
- "VM object", /* 32 M_VMOBJ */
- "VM objhash", /* 33 M_VMOBJHASH */
- "VM pmap", /* 34 M_VMPMAP */
- "VM pvmap", /* 35 M_VMPVENT */
- "VM pager", /* 36 M_VMPAGER */
- "VM pgdata", /* 37 M_VMPGDATA */
- "fileproc", /* 38 M_FILEPROC */
- "file desc", /* 39 M_FILEDESC */
- "lockf", /* 40 M_LOCKF */
- "proc", /* 41 M_PROC */
- "pstats", /* 42 M_SUBPROC */
- "LFS segment", /* 43 M_SEGMENT */
- "LFS node", /* 44 M_LFSNODE */
-#if FFS
- "FFS node", /* 45 M_FFSNODE */
-#else
- "", /* 45 M_FFSNODE */
-#endif
- "MFS node", /* 46 M_MFSNODE */
- "NQNFS Lease", /* 47 M_NQLEASE */
- "NQNFS Host", /* 48 M_NQMHOST */
- "Export Host", /* 49 M_NETADDR */
-#if (NFSCLIENT || NFSSERVER)
- "NFS srvsock", /* 50 M_NFSSVC */
- "NFS uid", /* 51 M_NFSUID */
- "NFS daemon", /* 52 M_NFSD */
-#else
- "", /* 50 M_NFSSVC */
- "", /* 51 M_NFSUID */
- "", /* 52 M_NFSD */
-#endif
- "ip_moptions", /* 53 M_IPMOPTS */
- "in_multi", /* 54 M_IPMADDR */
- "ether_multi", /* 55 M_IFMADDR */
- "mrt", /* 56 M_MRTABLE */
-#if CD9660
- "ISOFS mount", /* 57 M_ISOFSMNT */
- "ISOFS node", /* 58 M_ISOFSNODE */
-#else
- "", /* 57 M_ISOFSMNT */
- "", /* 58 M_ISOFSNODE */
-#endif
-#if (NFSCLIENT || NFSSERVER)
- "NFSV3 srvdesc",/* 59 M_NFSRVDESC */
- "NFSV3 diroff", /* 60 M_NFSDIROFF */
- "NFSV3 bigfh", /* 61 M_NFSBIGFH */
-#else
- "", /* 59 M_NFSRVDESC */
- "", /* 60 M_NFSDIROFF */
- "", /* 61 M_NFSBIGFH */
-#endif
- "MSDOSFS mount",/* 62 M_MSDOSFSMNT */
- "MSDOSFS fat", /* 63 M_MSDOSFSFAT */
- "MSDOSFS node", /* 64 M_MSDOSFSNODE */
- "ttys", /* 65 M_TTYS */
- "exec", /* 66 M_EXEC */
- "miscfs mount", /* 67 M_MISCFSMNT */
- "miscfs node", /* 68 M_MISCFSNODE */
- "adosfs mount", /* 69 M_ADOSFSMNT */
- "adosfs node", /* 70 M_ADOSFSNODE */
- "adosfs anode", /* 71 M_ANODE */
- "buf hdrs", /* 72 M_BUFHDR */
- "ofile tabl", /* 73 M_OFILETABL */
- "mbuf clust", /* 74 M_MCLUST */
-#if HFS
- "HFS mount", /* 75 M_HFSMNT */
- "HFS node", /* 76 M_HFSNODE */
- "HFS fork", /* 77 M_HFSFORK */
-#else
- "", /* 75 M_HFSMNT */
- "", /* 76 M_HFSNODE */
- "", /* 77 M_HFSFORK */
-#endif
- "ZFS mount", /* 78 M_ZFSFSMNT */
- "ZFS node", /* 79 M_ZFSNODE */
- "temp", /* 80 M_TEMP */
- "key mgmt", /* 81 M_SECA */
- "DEVFS", /* 82 M_DEVFS */
- "IpFw/IpAcct", /* 83 M_IPFW */
- "UDF node", /* 84 M_UDFNODE */
- "UDF mount", /* 85 M_UDFMNT */
-#if INET6
- "IPv6 NDP", /* 86 M_IP6NDP */
- "IPv6 options", /* 87 M_IP6OPT */
- "IPv6 Misc", /* 88 M_IP6MISC */
-#else
- "", /* 86 M_IP6NDP */
- "", /* 87 M_IP6OPT */
- "", /* 88 M_IP6MISC */
-#endif
- "TCP Segment Q",/* 89 M_TSEGQ */
- "IGMP state", /* 90 M_IGMP */
-#if JOURNALING
- "Journal", /* 91 M_JNL_JNL */
- "Transaction", /* 92 M_JNL_TR */
-#else
- "", /* 91 M_JNL_JNL */
- "", /* 92 M_JNL_TR */
-#endif
- "specinfo", /* 93 M_SPECINFO */
- "kqueue", /* 94 M_KQUEUE */
-#if HFS
- "HFS dirhint", /* 95 M_HFSDIRHINT */
-#else
- "", /* 95 M_HFSDIRHINT */
-#endif
- "cluster_read", /* 96 M_CLRDAHEAD */
- "cluster_write",/* 97 M_CLWRBEHIND */
- "iov64", /* 98 M_IOV64 */
- "fileglob", /* 99 M_FILEGLOB */
- "kauth", /* 100 M_KAUTH */
- "dummynet", /* 101 M_DUMMYNET */
- "unsafe_fsnode", /* 102 M_UNSAFEFS */
- "macpipelabel", /* 103 M_MACPIPELABEL */
- "mactemp", /* 104 M_MACTEMP */
- "sbuf", /* 105 M_SBUF */
- "extattr", /* 106 M_EXTATTR */
- "lctx", /* 107 M_LCTX */
-#if TRAFFIC_MGT
- "traffic_mgt", /* 108 M_TRAFFIC_MGT */
-#else
- "", /* 108 M_TRAFFIC_MGT */
-#endif
-};
-
-/* for use with kmzones.kz_zalloczone */
-#define KMZ_CREATEZONE ((void *)-2)
-#define KMZ_LOOKUPZONE ((void *)-1)
-#define KMZ_MALLOC ((void *)0)
-#define KMZ_SHAREZONE ((void *)1)
-
-struct kmzones {
- size_t kz_elemsize;
- void *kz_zalloczone;
-} kmzones[M_LAST] = {
-#define SOS(sname) sizeof (struct sname)
-#define SOX(sname) -1
- { -1, 0 }, /* 0 M_FREE */
- { MSIZE, KMZ_CREATEZONE }, /* 1 M_MBUF */
- { 0, KMZ_MALLOC }, /* 2 M_DEVBUF */
- { SOS(socket), KMZ_CREATEZONE }, /* 3 M_SOCKET */
- { SOS(inpcb), KMZ_LOOKUPZONE }, /* 4 M_PCB */
- { M_MBUF, KMZ_SHAREZONE }, /* 5 M_RTABLE */
- { M_MBUF, KMZ_SHAREZONE }, /* 6 M_HTABLE */
- { M_MBUF, KMZ_SHAREZONE }, /* 7 M_FTABLE */
- { SOS(rusage), KMZ_CREATEZONE }, /* 8 M_ZOMBIE */
- { 0, KMZ_MALLOC }, /* 9 M_IFADDR */
- { M_MBUF, KMZ_SHAREZONE }, /* 10 M_SOOPTS */
- { 0, KMZ_MALLOC }, /* 11 M_SONAME */
- { MAXPATHLEN, KMZ_CREATEZONE }, /* 12 M_NAMEI */
- { 0, KMZ_MALLOC }, /* 13 M_GPROF */
- { 0, KMZ_MALLOC }, /* 14 M_IOCTLOPS */
- { 0, KMZ_MALLOC }, /* 15 M_MAPMEM */
- { SOS(ucred), KMZ_CREATEZONE }, /* 16 M_CRED */
- { SOS(pgrp), KMZ_CREATEZONE }, /* 17 M_PGRP */
- { SOS(session), KMZ_CREATEZONE }, /* 18 M_SESSION */
- { SOS(iovec_32), KMZ_LOOKUPZONE }, /* 19 M_IOV32 */
- { SOS(mount), KMZ_CREATEZONE }, /* 20 M_MOUNT */
- { 0, KMZ_MALLOC }, /* 21 M_FHANDLE */
-#if (NFSCLIENT || NFSSERVER)
- { SOS(nfsreq), KMZ_CREATEZONE }, /* 22 M_NFSREQ */
- { SOS(nfsmount), KMZ_CREATEZONE }, /* 23 M_NFSMNT */
- { SOS(nfsnode), KMZ_CREATEZONE }, /* 24 M_NFSNODE */
-#else
- { 0, KMZ_MALLOC }, /* 22 M_NFSREQ */
- { 0, KMZ_MALLOC }, /* 23 M_NFSMNT */
- { 0, KMZ_MALLOC }, /* 24 M_NFSNODE */
-#endif
- { SOS(vnode), KMZ_CREATEZONE }, /* 25 M_VNODE */
- { SOS(namecache), KMZ_CREATEZONE }, /* 26 M_CACHE */
-#if QUOTA
- { SOX(dquot), KMZ_LOOKUPZONE }, /* 27 M_DQUOT */
-#else
- { 0, KMZ_MALLOC }, /* 27 M_DQUOT */
-#endif
-#if FFS
- { SOX(ufsmount), KMZ_LOOKUPZONE }, /* 28 M_UFSMNT */
-#else
- { 0, KMZ_MALLOC }, /* 28 M_UFSMNT */
-#endif
- { 0, KMZ_MALLOC }, /* 29 M_CGSUM */
- { SOS(plimit), KMZ_CREATEZONE }, /* 30 M_PLIMIT */
- { SOS(sigacts), KMZ_CREATEZONE }, /* 31 M_SIGACTS */
- { 0, KMZ_MALLOC }, /* 32 M_VMOBJ */
- { 0, KMZ_MALLOC }, /* 33 M_VMOBJHASH */
- { 0, KMZ_MALLOC }, /* 34 M_VMPMAP */
- { 0, KMZ_MALLOC }, /* 35 M_VMPVENT */
- { 0, KMZ_MALLOC }, /* 36 M_VMPAGER */
- { 0, KMZ_MALLOC }, /* 37 M_VMPGDATA */
- { SOS(fileproc), KMZ_CREATEZONE }, /* 38 M_FILEPROC */
- { SOS(filedesc), KMZ_CREATEZONE }, /* 39 M_FILEDESC */
- { SOX(lockf), KMZ_CREATEZONE }, /* 40 M_LOCKF */
- { SOS(proc), KMZ_CREATEZONE }, /* 41 M_PROC */
- { SOS(pstats), KMZ_CREATEZONE }, /* 42 M_PSTATS */
- { 0, KMZ_MALLOC }, /* 43 M_SEGMENT */
- { M_FFSNODE, KMZ_SHAREZONE }, /* 44 M_LFSNODE */
-#if FFS
- { SOS(inode), KMZ_CREATEZONE }, /* 45 M_FFSNODE */
-#else
- { 0, KMZ_MALLOC }, /* 45 M_FFSNODE */
-#endif
- { M_FFSNODE, KMZ_SHAREZONE }, /* 46 M_MFSNODE */
- { 0, KMZ_MALLOC }, /* 47 M_NQLEASE */
- { 0, KMZ_MALLOC }, /* 48 M_NQMHOST */
- { 0, KMZ_MALLOC }, /* 49 M_NETADDR */
-#if (NFSCLIENT || NFSSERVER)
- { SOX(nfsrv_sock),
- KMZ_CREATEZONE }, /* 50 M_NFSSVC */
- { 0, KMZ_MALLOC }, /* 51 M_NFSUID */
- { SOX(nfsrvcache),
- KMZ_CREATEZONE }, /* 52 M_NFSD */
-#else
- { 0, KMZ_MALLOC }, /* 50 M_NFSSVC */
- { 0, KMZ_MALLOC }, /* 51 M_NFSUID */
- { 0, KMZ_MALLOC }, /* 52 M_NFSD */
-#endif
- { SOX(ip_moptions),
- KMZ_LOOKUPZONE }, /* 53 M_IPMOPTS */
- { SOX(in_multi), KMZ_LOOKUPZONE }, /* 54 M_IPMADDR */
- { SOX(ether_multi),
- KMZ_LOOKUPZONE }, /* 55 M_IFMADDR */
- { SOX(mrt), KMZ_CREATEZONE }, /* 56 M_MRTABLE */
-#if CD9660
- { SOX(iso_mnt), KMZ_LOOKUPZONE }, /* 57 M_ISOFSMNT */
- { SOS(iso_node), KMZ_CREATEZONE }, /* 58 M_ISOFSNODE */
-#else
- { 0, KMZ_MALLOC }, /* 57 M_ISOFSMNT */
- { 0, KMZ_MALLOC }, /* 58 M_ISOFSNODE */
-#endif
-#if (NFSCLIENT || NFSSERVER)
- { SOS(nfsrv_descript),
- KMZ_CREATEZONE }, /* 59 M_NFSRVDESC */
- { SOS(nfsdmap), KMZ_CREATEZONE }, /* 60 M_NFSDIROFF */
- { SOS(fhandle), KMZ_LOOKUPZONE }, /* 61 M_NFSBIGFH */
-#else
- { 0, KMZ_MALLOC }, /* 59 M_NFSRVDESC */
- { 0, KMZ_MALLOC }, /* 60 M_NFSDIROFF */
- { 0, KMZ_MALLOC }, /* 61 M_NFSBIGFH */
-#endif
- { 0, KMZ_MALLOC }, /* 62 M_MSDOSFSMNT */
- { 0, KMZ_MALLOC }, /* 63 M_MSDOSFSFAT */
- { 0, KMZ_MALLOC }, /* 64 M_MSDOSFSNODE */
- { SOS(tty), KMZ_CREATEZONE }, /* 65 M_TTYS */
- { 0, KMZ_MALLOC }, /* 66 M_EXEC */
- { 0, KMZ_MALLOC }, /* 67 M_MISCFSMNT */
- { 0, KMZ_MALLOC }, /* 68 M_MISCFSNODE */
- { 0, KMZ_MALLOC }, /* 69 M_ADOSFSMNT */
- { 0, KMZ_MALLOC }, /* 70 M_ADOSFSNODE */
- { 0, KMZ_MALLOC }, /* 71 M_ANODE */
- { SOX(buf), KMZ_CREATEZONE }, /* 72 M_BUFHDR */
- { (NDFILE * OFILESIZE),
- KMZ_CREATEZONE }, /* 73 M_OFILETABL */
- { MCLBYTES, KMZ_CREATEZONE }, /* 74 M_MCLUST */
-#if HFS
- { SOX(hfsmount), KMZ_LOOKUPZONE }, /* 75 M_HFSMNT */
- { SOS(cnode), KMZ_CREATEZONE }, /* 76 M_HFSNODE */
- { SOS(filefork), KMZ_CREATEZONE }, /* 77 M_HFSFORK */
-#else
- { 0, KMZ_MALLOC }, /* 75 M_HFSMNT */
- { 0, KMZ_MALLOC }, /* 76 M_HFSNODE */
- { 0, KMZ_MALLOC }, /* 77 M_HFSFORK */
-#endif
- { 0, KMZ_MALLOC }, /* 78 M_ZFSMNT */
- { 0, KMZ_MALLOC }, /* 79 M_ZFSNODE */
- { 0, KMZ_MALLOC }, /* 80 M_TEMP */
- { 0, KMZ_MALLOC }, /* 81 M_SECA */
- { 0, KMZ_MALLOC }, /* 82 M_DEVFS */
- { 0, KMZ_MALLOC }, /* 83 M_IPFW */
- { 0, KMZ_MALLOC }, /* 84 M_UDFNODE */
- { 0, KMZ_MALLOC }, /* 85 M_UDFMOUNT */
- { 0, KMZ_MALLOC }, /* 86 M_IP6NDP */
- { 0, KMZ_MALLOC }, /* 87 M_IP6OPT */
- { 0, KMZ_MALLOC }, /* 88 M_IP6MISC */
- { 0, KMZ_MALLOC }, /* 89 M_TSEGQ */
- { 0, KMZ_MALLOC }, /* 90 M_IGMP */
-#if JOURNALING
- { SOS(journal), KMZ_CREATEZONE }, /* 91 M_JNL_JNL */
- { SOS(transaction), KMZ_CREATEZONE }, /* 92 M_JNL_TR */
-#else
- { 0, KMZ_MALLOC }, /* 91 M_JNL_JNL */
- { 0, KMZ_MALLOC }, /* 92 M_JNL_TR */
-#endif
- { SOS(specinfo), KMZ_CREATEZONE }, /* 93 M_SPECINFO */
- { SOS(kqueue), KMZ_CREATEZONE }, /* 94 M_KQUEUE */
-#if HFS
- { SOS(directoryhint), KMZ_CREATEZONE }, /* 95 M_HFSDIRHINT */
-#else
- { 0, KMZ_MALLOC }, /* 95 M_HFSDIRHINT */
-#endif
- { SOS(cl_readahead), KMZ_CREATEZONE }, /* 96 M_CLRDAHEAD */
- { SOS(cl_writebehind),KMZ_CREATEZONE }, /* 97 M_CLWRBEHIND */
- { SOS(iovec_64), KMZ_LOOKUPZONE }, /* 98 M_IOV64 */
- { SOS(fileglob), KMZ_CREATEZONE }, /* 99 M_FILEGLOB */
- { 0, KMZ_MALLOC }, /* 100 M_KAUTH */
- { 0, KMZ_MALLOC }, /* 101 M_DUMMYNET */
- { SOS(unsafe_fsnode),KMZ_CREATEZONE }, /* 102 M_UNSAFEFS */
- { 0, KMZ_MALLOC }, /* 103 M_MACPIPELABEL */
- { 0, KMZ_MALLOC }, /* 104 M_MACTEMP */
- { 0, KMZ_MALLOC }, /* 105 M_SBUF */
- { 0, KMZ_MALLOC }, /* 106 M_HFS_EXTATTR */
- { 0, KMZ_MALLOC }, /* 107 M_LCTX */
- { 0, KMZ_MALLOC }, /* 108 M_TRAFFIC_MGT */
-#undef SOS
-#undef SOX
-};
-
-extern zone_t kalloc_zone(vm_size_t); /* XXX */
+ panic("_REALLOC: kalloc returned NULL (potential leak), size %llu", (uint64_t) size);
+}
-/*
- * Initialize the kernel memory allocator
- */
+void *
+_MALLOC_external(size_t size, int type, int flags);
+void *
+_MALLOC_external(size_t size, int type, int flags)
+{
+ static vm_allocation_site_t site = {
+ .tag = VM_KERN_MEMORY_KALLOC,
+ .flags = VM_TAG_BT,
+ };
+ return __MALLOC_ext(size, type, flags, &site, KHEAP_KEXT);
+}
+
+void
+_FREE_external(void *addr, int type);
void
-kmeminit(void)
+_FREE_external(void *addr, int type __unused)
{
- struct kmzones *kmz;
+ /*
+ * hashinit and other functions allocate on behalf of kexts and do not have
+ * a matching hashdestroy, so we sadly have to allow this for now.
+ */
+ kheap_free_addr(KHEAP_ANY, addr);
+}
- if ((sizeof(kmzones)/sizeof(kmzones[0])) != (sizeof(memname)/sizeof(memname[0]))) {
- panic("kmeminit: kmzones has %lu elements but memname has %lu\n",
- (sizeof(kmzones)/sizeof(kmzones[0])), (sizeof(memname)/sizeof(memname[0])));
- }
+void
+_FREE_ZONE_external(void *elem, size_t size, int type);
+void
+_FREE_ZONE_external(void *elem, size_t size, int type __unused)
+{
+ (kheap_free)(KHEAP_KEXT, elem, size);
+}
- kmz = kmzones;
- while (kmz < &kmzones[M_LAST]) {
-/* XXX */
- if (kmz->kz_elemsize == (size_t)(-1))
- ;
- else
-/* XXX */
- if (kmz->kz_zalloczone == KMZ_CREATEZONE) {
- kmz->kz_zalloczone = zinit(kmz->kz_elemsize,
- 1024 * 1024, PAGE_SIZE,
- memname[kmz - kmzones]);
- }
- else if (kmz->kz_zalloczone == KMZ_LOOKUPZONE)
- kmz->kz_zalloczone = kalloc_zone(kmz->kz_elemsize);
+#if DEBUG || DEVELOPMENT
- kmz++;
- }
+extern unsigned int zone_map_jetsam_limit;
- kmz = kmzones;
- while (kmz < &kmzones[M_LAST]) {
-/* XXX */
- if (kmz->kz_elemsize == (size_t)(-1))
- ;
- else
-/* XXX */
- if (kmz->kz_zalloczone == KMZ_SHAREZONE) {
- kmz->kz_zalloczone =
- kmzones[kmz->kz_elemsize].kz_zalloczone;
- kmz->kz_elemsize =
- kmzones[kmz->kz_elemsize].kz_elemsize;
- }
+static int
+sysctl_zone_map_jetsam_limit SYSCTL_HANDLER_ARGS
+{
+#pragma unused(oidp, arg1, arg2)
+ int oldval = 0, val = 0, error = 0;
+
+ oldval = zone_map_jetsam_limit;
+ error = sysctl_io_number(req, oldval, sizeof(int), &val, NULL);
+ if (error || !req->newptr) {
+ return error;
+ }
- kmz++;
+ if (val <= 0 || val > 100) {
+ printf("sysctl_zone_map_jetsam_limit: new jetsam limit value is invalid.\n");
+ return EINVAL;
}
+
+ zone_map_jetsam_limit = val;
+ return 0;
}
-#define MDECL(reqlen) \
-union { \
- struct _mhead hdr; \
- char _m[(reqlen) + sizeof (struct _mhead)]; \
+SYSCTL_PROC(_kern, OID_AUTO, zone_map_jetsam_limit, CTLTYPE_INT | CTLFLAG_RW, 0, 0,
+ sysctl_zone_map_jetsam_limit, "I", "Zone map jetsam limit");
+
+
+extern void get_zone_map_size(uint64_t *current_size, uint64_t *capacity);
+
+static int
+sysctl_zone_map_size_and_capacity SYSCTL_HANDLER_ARGS
+{
+#pragma unused(oidp, arg1, arg2)
+ uint64_t zstats[2];
+ get_zone_map_size(&zstats[0], &zstats[1]);
+
+ return SYSCTL_OUT(req, &zstats, sizeof(zstats));
}
-struct _mhead {
- size_t mlen;
- char dat[0];
-};
+SYSCTL_PROC(_kern, OID_AUTO, zone_map_size_and_capacity,
+ CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED,
+ 0, 0, &sysctl_zone_map_size_and_capacity, "Q", "Current size and capacity of the zone map");
-void *
-_MALLOC(
- size_t size,
- int type,
- int flags)
+
+extern boolean_t run_zone_test(void);
+
+static int
+sysctl_run_zone_test SYSCTL_HANDLER_ARGS
{
- MDECL(size) *mem;
- size_t memsize = sizeof (*mem);
+#pragma unused(oidp, arg1, arg2)
+ /* require setting this sysctl to prevent sysctl -a from running this */
+ if (!req->newptr) {
+ return 0;
+ }
- if (type >= M_LAST)
- panic("_malloc TYPE");
+ int ret_val = run_zone_test();
+ return SYSCTL_OUT(req, &ret_val, sizeof(ret_val));
+}
+
+SYSCTL_PROC(_kern, OID_AUTO, run_zone_test,
+ CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_MASKED | CTLFLAG_LOCKED,
+ 0, 0, &sysctl_run_zone_test, "I", "Test zone allocator KPI");
+
+#endif /* DEBUG || DEVELOPMENT */
+
+#if CONFIG_ZLEAKS
+
+SYSCTL_DECL(_kern_zleak);
+SYSCTL_NODE(_kern, OID_AUTO, zleak, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "zleak");
- if (size == 0)
- return (NULL);
+/*
+ * kern.zleak.active
+ *
+ * Show the status of the zleak subsystem (0 = enabled, 1 = active,
+ * and -1 = failed), and if enabled, allow it to be activated immediately.
+ */
+static int
+sysctl_zleak_active SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ int oldval, val, error;
- if (flags & M_NOWAIT) {
- mem = (void *)kalloc_noblock(memsize);
- } else {
- mem = (void *)kalloc(memsize);
+ val = oldval = get_zleak_state();
+ error = sysctl_handle_int(oidp, &val, 0, req);
+ if (error || !req->newptr) {
+ return error;
+ }
+ /*
+ * Can only be activated if it's off (and not failed.)
+ * Cannot be deactivated once it's on.
+ */
+ if (val == 1 && oldval == 0) {
+ kern_return_t kr = zleak_activate();
+
+ if (KERN_SUCCESS != kr) {
+ printf("zleak_active: failed to activate "
+ "live zone leak debugging (%d).\n", kr);
+ }
+ }
+ if (val == 0 && oldval == 1) {
+ printf("zleak_active: active, cannot be disabled.\n");
+ return EINVAL;
}
- if (!mem)
- return (0);
+ return 0;
+}
- mem->hdr.mlen = memsize;
+SYSCTL_PROC(_kern_zleak, OID_AUTO, active,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
+ 0, 0, sysctl_zleak_active, "I", "zleak activity");
- if (flags & M_ZERO)
- bzero(mem->hdr.dat, size);
+/*
+ * kern.zleak.max_zonemap_size
+ *
+ * Read the value of the maximum zonemap size in bytes; useful
+ * as the maximum size that zleak.global_threshold and
+ * zleak.zone_threshold should be set to.
+ */
+static int
+sysctl_zleak_max_zonemap_size SYSCTL_HANDLER_ARGS
+{
+ uint64_t zmap_max_size = *(vm_size_t *)arg1;
- return (mem->hdr.dat);
+ return sysctl_handle_quad(oidp, &zmap_max_size, arg2, req);
}
-void
-_FREE(
- void *addr,
- int type)
+SYSCTL_PROC(_kern_zleak, OID_AUTO, max_zonemap_size,
+ CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED,
+ &zleak_max_zonemap_size, 0,
+ sysctl_zleak_max_zonemap_size, "Q", "zleak max zonemap size");
+
+
+static int
+sysctl_zleak_threshold SYSCTL_HANDLER_ARGS
{
- struct _mhead *hdr;
+#pragma unused(oidp, arg2)
+ int error;
+ uint64_t value = *(vm_size_t *)arg1;
+
+ error = sysctl_io_number(req, value, sizeof(value), &value, NULL);
- if (type >= M_LAST)
- panic("_free TYPE");
+ if (error || !req->newptr) {
+ return error;
+ }
- if (!addr)
- return; /* correct (convenient bsd kernel legacy) */
+ if (value > (uint64_t)zleak_max_zonemap_size) {
+ return ERANGE;
+ }
- hdr = addr; hdr--;
- kfree(hdr, hdr->mlen);
+ *(vm_size_t *)arg1 = value;
+ return 0;
}
-void *
-_MALLOC_ZONE(
- size_t size,
- int type,
- int flags)
+/*
+ * kern.zleak.global_threshold
+ *
+ * Set the global zleak threshold size (in bytes). If the zone map
+ * grows larger than this value, zleaks are automatically activated.
+ *
+ * The default value is set in zleak_init().
+ */
+SYSCTL_PROC(_kern_zleak, OID_AUTO, global_threshold,
+ CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED,
+ &zleak_global_tracking_threshold, 0,
+ sysctl_zleak_threshold, "Q", "zleak global threshold");
+
+/*
+ * kern.zleak.zone_threshold
+ *
+ * Set the per-zone threshold size (in bytes) above which any
+ * zone will automatically start zleak tracking.
+ *
+ * The default value is set in zleak_init().
+ *
+ * Setting this variable will have no effect until zleak tracking is
+ * activated (See above.)
+ */
+SYSCTL_PROC(_kern_zleak, OID_AUTO, zone_threshold,
+ CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED,
+ &zleak_per_zone_tracking_threshold, 0,
+ sysctl_zleak_threshold, "Q", "zleak per-zone threshold");
+
+#endif /* CONFIG_ZLEAKS */
+
+extern uint64_t get_zones_collectable_bytes(void);
+
+static int
+sysctl_zones_collectable_bytes SYSCTL_HANDLER_ARGS
{
- struct kmzones *kmz;
- void *elem;
-
- if (type >= M_LAST)
- panic("_malloc_zone TYPE");
-
- kmz = &kmzones[type];
- if (kmz->kz_zalloczone == KMZ_MALLOC)
- panic("_malloc_zone ZONE: type = %d", type);
-
-/* XXX */
- if (kmz->kz_elemsize == (size_t)(-1))
- panic("_malloc_zone XXX");
-/* XXX */
- if (size == kmz->kz_elemsize)
- if (flags & M_NOWAIT) {
- elem = (void *)zalloc_noblock(kmz->kz_zalloczone);
- } else {
- elem = (void *)zalloc(kmz->kz_zalloczone);
- }
- else
- if (flags & M_NOWAIT) {
- elem = (void *)kalloc_noblock(size);
- } else {
- elem = (void *)kalloc(size);
- }
+#pragma unused(oidp, arg1, arg2)
+ uint64_t zones_free_mem = get_zones_collectable_bytes();
- return (elem);
+ return SYSCTL_OUT(req, &zones_free_mem, sizeof(zones_free_mem));
}
-void
-_FREE_ZONE(
- void *elem,
- size_t size,
- int type)
+SYSCTL_PROC(_kern, OID_AUTO, zones_collectable_bytes,
+ CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED,
+ 0, 0, &sysctl_zones_collectable_bytes, "Q", "Collectable memory in zones");
+
+
+#if DEBUG || DEVELOPMENT
+
+static int
+sysctl_zone_gc_replenish_test SYSCTL_HANDLER_ARGS
{
- struct kmzones *kmz;
-
- if (type >= M_LAST)
- panic("FREE_SIZE");
-
- kmz = &kmzones[type];
- if (kmz->kz_zalloczone == KMZ_MALLOC)
- panic("free_zone ZONE");
-
-/* XXX */
- if (kmz->kz_elemsize == (size_t)(-1))
- panic("FREE_SIZE XXX");
-/* XXX */
- if (size == kmz->kz_elemsize)
- zfree(kmz->kz_zalloczone, elem);
- else
- kfree(elem, size);
+#pragma unused(oidp, arg1, arg2)
+ /* require setting this sysctl to prevent sysctl -a from running this */
+ if (!req->newptr) {
+ return 0;
+ }
+
+ int ret_val = 0;
+ zone_gc_replenish_test();
+ return SYSCTL_OUT(req, &ret_val, sizeof(ret_val));
}
+
+static int
+sysctl_zone_alloc_replenish_test SYSCTL_HANDLER_ARGS
+{
+#pragma unused(oidp, arg1, arg2)
+ /* require setting this sysctl to prevent sysctl -a from running this */
+ if (!req->newptr) {
+ return 0;
+ }
+
+ int ret_val = 0;
+ zone_alloc_replenish_test();
+ return SYSCTL_OUT(req, &ret_val, sizeof(ret_val));
+}
+
+SYSCTL_PROC(_kern, OID_AUTO, zone_gc_replenish_test,
+ CTLTYPE_INT | CTLFLAG_MASKED | CTLFLAG_LOCKED | CTLFLAG_WR,
+ 0, 0, &sysctl_zone_gc_replenish_test, "I", "Test zone GC replenish");
+SYSCTL_PROC(_kern, OID_AUTO, zone_alloc_replenish_test,
+ CTLTYPE_INT | CTLFLAG_MASKED | CTLFLAG_LOCKED | CTLFLAG_WR,
+ 0, 0, &sysctl_zone_alloc_replenish_test, "I", "Test zone alloc replenish");
+
+#endif /* DEBUG || DEVELOPMENT */
projects / apple / xnu.git / blobdiff