xnu-517.tar.gz

[apple/xnu.git] / bsd / kern / kern_malloc.c

diff --git a/bsd/kern/kern_malloc.c b/bsd/kern/kern_malloc.c
index 24086441bf1b18e48b8c4b156ac7066c4f939254..2090235adbe19756660922b163461cbc9e3b7c8f 100644 (file)
--- a/bsd/kern/kern_malloc.c
+++ b/bsd/kern/kern_malloc.c
@@ -1,21 +1,24 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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
+ * compliance with the License. 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,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_LICENSE_HEADER_END@
  */
@@ -68,6 +71,9 @@
 #include <netinet/ip.h>
 #include <netinet/in_pcb.h>
 
+#include <sys/event.h>
+#include <sys/eventvar.h>
+
 #include <sys/proc.h>
 #include <sys/mount.h>
 #include <sys/vnode.h>
@@ -75,14 +81,15 @@
 #include <sys/file.h>
 #include <sys/filedesc.h>
 #include <sys/tty.h>
+#include <sys/quota.h>
 
-#include <ufs/ufs/quota.h>
 #include <ufs/ufs/inode.h>
 
-#include <hfs/hfs.h>
+#include <hfs/hfs_cnode.h>
 #include <isofs/cd9660/cd9660_node.h>
 
 #include <miscfs/volfs/volfs.h>
+#include <miscfs/specfs/specdev.h>
 
 #include <nfs/rpcv2.h>
 #include <nfs/nfsproto.h>
@@ -90,6 +97,8 @@
 #include <nfs/nfsmount.h>
 #include <nfs/nqnfs.h>
 
+#include <vfs/vfs_journal.h>
+
 #include <mach/mach_types.h>
 
 #include <kern/zalloc.h>
@@ -190,8 +199,8 @@ struct kmzones {
                        KMZ_CREATEZONE,         /* 73 M_OFILETABL */
        MCLBYTES,       KMZ_CREATEZONE,         /* 74 M_MCLUST */
        SOX(hfsmount),  KMZ_LOOKUPZONE,         /* 75 M_HFSMNT */
-       SOS(hfsnode),   KMZ_CREATEZONE,         /* 76 M_HFSNODE */
-       SOS(hfsfilemeta),       KMZ_CREATEZONE, /* 77 M_HFSFMETA */
+       SOS(cnode),     KMZ_CREATEZONE,         /* 76 M_HFSNODE */
+       SOS(filefork),  KMZ_CREATEZONE,         /* 77 M_HFSFORK */
        SOX(volfs_mntdata),     KMZ_LOOKUPZONE,         /* 78 M_VOLFSMNT */
        SOS(volfs_vndata),      KMZ_CREATEZONE,         /* 79 M_VOLFSNODE */
        0,              KMZ_MALLOC,             /* 80 M_TEMP */
@@ -202,12 +211,18 @@ struct kmzones {
        0,              KMZ_MALLOC,             /* 85 M_UDFMOUNT */
        0,              KMZ_MALLOC,             /* 86 M_IP6NDP */
        0,              KMZ_MALLOC,             /* 87 M_IP6OPT */
-       0,              KMZ_MALLOC,             /* 88 M_NATPT */
-
+       0,              KMZ_MALLOC,             /* 88 M_IP6MISC */
+       0,              KMZ_MALLOC,             /* 89 M_TSEGQ */
+       0,              KMZ_MALLOC,             /* 90 M_IGMP */
+       SOS(journal), KMZ_CREATEZONE,     /* 91 M_JNL_JNL */
+       SOS(transaction), KMZ_CREATEZONE,     /* 92 M_JNL_TR */
+       SOS(specinfo), KMZ_CREATEZONE,          /* 93 M_SPECINFO */
+       SOS(kqueue), KMZ_CREATEZONE,            /* 94 M_KQUEUE */
 #undef SOS
 #undef SOX
 };
 
+extern zone_t kalloc_zone(vm_size_t);  /* XXX */
 
 /*
  * Initialize the kernel memory allocator
@@ -217,6 +232,11 @@ kmeminit(void)
 {
        struct kmzones  *kmz;
 
+       if ((sizeof(kmzones)/sizeof(kmzones[0])) != (sizeof(memname)/sizeof(memname[0]))) {
+               panic("kmeminit: kmzones has %d elements but memname has %d\n",
+                         (sizeof(kmzones)/sizeof(kmzones[0])), (sizeof(memname)/sizeof(memname[0])));
+       }
+
        kmz = kmzones;
        while (kmz < &kmzones[M_LAST]) {
 /* XXX */
@@ -264,6 +284,8 @@ struct _mhead {
        char    dat[0];
 };
 
+#define ZEROSIZETOKEN (void *)0xFADEDFAD
+
 void *_MALLOC(
        size_t          size,
        int             type,
@@ -275,8 +297,12 @@ void *_MALLOC(
        if (type >= M_LAST)
                panic("_malloc TYPE");
 
+       /*
+        * On zero request we do not return zero as that
+        * could be mistaken for ENOMEM.
+        */
        if (size == 0)
-               return (0);
+               return (ZEROSIZETOKEN);
 
        if (flags & M_NOWAIT) {
                mem = (void *)kalloc_noblock(memsize);
@@ -288,6 +314,9 @@ void *_MALLOC(
 
        mem->hdr.mlen = memsize;
 
+       if (flags & M_ZERO)
+               bzero(mem->hdr.dat, size);
+
        return  (mem->hdr.dat);
 }
 
@@ -300,8 +329,10 @@ void _FREE(
        if (type >= M_LAST)
                panic("_free TYPE");
 
-       if (!addr)
+       if (addr == (void *)ZEROSIZETOKEN)
                return;
+       if (!addr)
+               return; /* correct (convenient bsd kernel legacy) */
 
        hdr = addr; hdr--;
        kfree((vm_offset_t)hdr, hdr->mlen);