/*
- * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2013 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/in_pcb.h>
+#include <netinet/flow_divert.h>
#include <sys/event.h>
#include <sys/eventvar.h>
#include <kern/zalloc.h>
#include <kern/kalloc.h>
-void kmeminit(void) __attribute__((section("__TEXT, initcode")));
+void kmeminit(void);
/* Strings corresponding to types of memory.
* Must be in synch with the #defines is sys/malloc.h
#else
"", /* 27 M_DQUOT */
#endif
- "", /* 28 M_UFSMNT */
+ "proc uuid policy", /* 28 M_PROC_UUID_POLICY */
#if (SYSV_SEM || SYSV_MSG || SYSV_SHM)
"shm", /* 29 M_SHM */
#else
"", /* 76 M_HFSNODE */
"", /* 77 M_HFSFORK */
#endif
- "ZFS mount", /* 78 M_ZFSFSMNT */
- "ZFS node", /* 79 M_ZFSNODE */
+ "", /* 78 unused */
+ "", /* 79 unused */
"temp", /* 80 M_TEMP */
"key mgmt", /* 81 M_SECA */
"DEVFS", /* 82 M_DEVFS */
"fileglob", /* 99 M_FILEGLOB */
"kauth", /* 100 M_KAUTH */
"dummynet", /* 101 M_DUMMYNET */
-#ifndef __LP64__
- "unsafe_fsnode", /* 102 M_UNSAFEFS */
-#else
"", /* 102 M_UNSAFEFS */
-#endif /* __LP64__ */
"macpipelabel", /* 103 M_MACPIPELABEL */
"mactemp", /* 104 M_MACTEMP */
"sbuf", /* 105 M_SBUF */
#else
"", /* 109 M_DECMPFS_CNODE */
#endif /* HFS_COMPRESSION */
+ "ipmfilter", /* 110 M_INMFILTER */
+ "ipmsource", /* 111 M_IPMSOURCE */
+ "in6mfilter", /* 112 M_IN6MFILTER */
+ "ip6mopts", /* 113 M_IP6MOPTS */
+ "ip6msource", /* 114 M_IP6MSOURCE */
+#if FLOW_DIVERT
+ "flow_divert_pcb", /* 115 M_FLOW_DIVERT_PCB */
+ "flow_divert_group", /* 116 M_FLOW_DIVERT_GROUP */
+#else
+ "", /* 115 M_FLOW_DIVERT_PCB */
+ "", /* 116 M_FLOW_DIVERT_GROUP */
+#endif
+ "ip6cga", /* 117 M_IP6CGA */
};
/* for use with kmzones.kz_zalloczone */
+#define KMZ_CREATEZONE_ACCT ((void *)-3)
#define KMZ_CREATEZONE ((void *)-2)
#define KMZ_LOOKUPZONE ((void *)-1)
#define KMZ_MALLOC ((void *)0)
{ 0, KMZ_MALLOC, FALSE }, /* 21 M_FHANDLE */
#if (NFSCLIENT || NFSSERVER)
{ SOS(nfsreq), KMZ_CREATEZONE, FALSE }, /* 22 M_NFSREQ */
- { SOS(nfsmount), KMZ_CREATEZONE, FALSE },/* 23 M_NFSMNT */
+ { SOS(nfsmount),KMZ_CREATEZONE, FALSE }, /* 23 M_NFSMNT */
{ SOS(nfsnode), KMZ_CREATEZONE, FALSE }, /* 24 M_NFSNODE */
#else
{ 0, KMZ_MALLOC, FALSE }, /* 22 M_NFSREQ */
{ 0, KMZ_MALLOC, FALSE }, /* 24 M_NFSNODE */
#endif
{ SOS(vnode), KMZ_CREATEZONE, TRUE }, /* 25 M_VNODE */
- { SOS(namecache),KMZ_CREATEZONE, FALSE }, /* 26 M_CACHE */
+ { SOS(namecache), KMZ_CREATEZONE, FALSE }, /* 26 M_CACHE */
#if QUOTA
{ SOX(dquot), KMZ_LOOKUPZONE, FALSE }, /* 27 M_DQUOT */
#else
{ 0, KMZ_MALLOC, FALSE }, /* 27 M_DQUOT */
#endif
- { 0, KMZ_MALLOC, FALSE }, /* 28 M_UFSMNT */
- { 0, KMZ_MALLOC, FALSE }, /* 29 M_CGSUM */
+ { 0, KMZ_MALLOC, FALSE }, /* 28 M_PROC_UUID_POLICY */
+ { 0, KMZ_MALLOC, FALSE }, /* 29 M_SHM */
{ SOS(plimit), KMZ_CREATEZONE, TRUE }, /* 30 M_PLIMIT */
- { SOS(sigacts), KMZ_CREATEZONE, TRUE }, /* 31 M_SIGACTS */
+ { SOS(sigacts), KMZ_CREATEZONE_ACCT, TRUE }, /* 31 M_SIGACTS */
{ 0, KMZ_MALLOC, FALSE }, /* 32 M_VMOBJ */
{ 0, KMZ_MALLOC, FALSE }, /* 33 M_VMOBJHASH */
{ 0, KMZ_MALLOC, FALSE }, /* 34 M_VMPMAP */
{ 0, KMZ_MALLOC, FALSE }, /* 35 M_VMPVENT */
{ 0, KMZ_MALLOC, FALSE }, /* 36 M_VMPAGER */
{ 0, KMZ_MALLOC, FALSE }, /* 37 M_VMPGDATA */
- { SOS(fileproc),KMZ_CREATEZONE, TRUE }, /* 38 M_FILEPROC */
- { SOS(filedesc),KMZ_CREATEZONE, TRUE }, /* 39 M_FILEDESC */
- { SOX(lockf), KMZ_CREATEZONE, TRUE }, /* 40 M_LOCKF */
+ { SOS(fileproc),KMZ_CREATEZONE_ACCT, TRUE }, /* 38 M_FILEPROC */
+ { SOS(filedesc),KMZ_CREATEZONE_ACCT, TRUE }, /* 39 M_FILEDESC */
+ { SOX(lockf), KMZ_CREATEZONE_ACCT, TRUE }, /* 40 M_LOCKF */
{ SOS(proc), KMZ_CREATEZONE, FALSE }, /* 41 M_PROC */
{ SOS(pstats), KMZ_CREATEZONE, TRUE }, /* 42 M_PSTATS */
{ 0, KMZ_MALLOC, FALSE }, /* 43 M_SEGMENT */
{ 0, KMZ_MALLOC, FALSE }, /* 49 M_NETADDR */
#if (NFSCLIENT || NFSSERVER)
{ SOX(nfsrv_sock),
- KMZ_CREATEZONE, FALSE }, /* 50 M_NFSSVC */
+ KMZ_CREATEZONE_ACCT, FALSE }, /* 50 M_NFSSVC */
{ 0, KMZ_MALLOC, FALSE }, /* 51 M_NFSUID */
{ SOX(nfsrvcache),
- KMZ_CREATEZONE, FALSE }, /* 52 M_NFSD */
+ KMZ_CREATEZONE_ACCT, FALSE }, /* 52 M_NFSD */
#else
{ 0, KMZ_MALLOC, FALSE }, /* 50 M_NFSSVC */
{ 0, KMZ_MALLOC, FALSE }, /* 51 M_NFSUID */
{ 0, KMZ_MALLOC, FALSE }, /* 58 unused entry */
#if (NFSCLIENT || NFSSERVER)
{ SOS(nfsrv_descript),
- KMZ_CREATEZONE, FALSE }, /* 59 M_NFSRVDESC */
+ KMZ_CREATEZONE_ACCT, FALSE }, /* 59 M_NFSRVDESC */
{ SOS(nfsdmap), KMZ_CREATEZONE, FALSE }, /* 60 M_NFSDIROFF */
{ SOS(fhandle), KMZ_LOOKUPZONE, FALSE }, /* 61 M_NFSBIGFH */
#else
{ 0, KMZ_MALLOC, FALSE }, /* 69 M_ADOSFSMNT */
{ 0, KMZ_MALLOC, FALSE }, /* 70 M_ADOSFSNODE */
{ 0, KMZ_MALLOC, FALSE }, /* 71 M_ANODE */
- { SOX(buf), KMZ_CREATEZONE, TRUE }, /* 72 M_BUFHDR */
+ { 0, KMZ_MALLOC, TRUE }, /* 72 M_BUFHDR */
{ (NDFILE * OFILESIZE),
- KMZ_CREATEZONE, FALSE }, /* 73 M_OFILETABL */
+ KMZ_CREATEZONE_ACCT, FALSE }, /* 73 M_OFILETABL */
{ MCLBYTES, KMZ_CREATEZONE, FALSE }, /* 74 M_MCLUST */
#if HFS
{ SOX(hfsmount),KMZ_LOOKUPZONE, FALSE }, /* 75 M_HFSMNT */
{ 0, KMZ_MALLOC, FALSE }, /* 76 M_HFSNODE */
{ 0, KMZ_MALLOC, FALSE }, /* 77 M_HFSFORK */
#endif
- { 0, KMZ_MALLOC, FALSE }, /* 78 M_ZFSMNT */
- { 0, KMZ_MALLOC, FALSE }, /* 79 M_ZFSNODE */
+ { 0, KMZ_MALLOC, FALSE }, /* 78 unused */
+ { 0, KMZ_MALLOC, FALSE }, /* 79 unused */
{ 0, KMZ_MALLOC, FALSE }, /* 80 M_TEMP */
{ 0, KMZ_MALLOC, FALSE }, /* 81 M_SECA */
{ 0, KMZ_MALLOC, FALSE }, /* 82 M_DEVFS */
{ SOS(journal), KMZ_CREATEZONE, FALSE }, /* 91 M_JNL_JNL */
{ SOS(transaction), KMZ_CREATEZONE, FALSE }, /* 92 M_JNL_TR */
#else
- { 0, KMZ_MALLOC, FALSE }, /* 91 M_JNL_JNL */
- { 0, KMZ_MALLOC, FALSE }, /* 92 M_JNL_TR */
+ { 0, KMZ_MALLOC, FALSE }, /* 91 M_JNL_JNL */
+ { 0, KMZ_MALLOC, FALSE }, /* 92 M_JNL_TR */
#endif
- { SOS(specinfo), KMZ_CREATEZONE, TRUE }, /* 93 M_SPECINFO */
- { SOS(kqueue), KMZ_CREATEZONE, FALSE }, /* 94 M_KQUEUE */
+ { SOS(specinfo),KMZ_CREATEZONE, TRUE }, /* 93 M_SPECINFO */
+ { SOS(kqueue), KMZ_CREATEZONE, FALSE }, /* 94 M_KQUEUE */
#if HFS
- { SOS(directoryhint), KMZ_CREATEZONE, FALSE }, /* 95 M_HFSDIRHINT */
+ { SOS(directoryhint), KMZ_CREATEZONE, TRUE }, /* 95 M_HFSDIRHINT */
#else
- { 0, KMZ_MALLOC, FALSE }, /* 95 M_HFSDIRHINT */
+ { 0, KMZ_MALLOC, FALSE }, /* 95 M_HFSDIRHINT */
#endif
{ SOS(cl_readahead), KMZ_CREATEZONE, TRUE }, /* 96 M_CLRDAHEAD */
{ SOS(cl_writebehind),KMZ_CREATEZONE, TRUE }, /* 97 M_CLWRBEHIND */
{ SOS(fileglob), KMZ_CREATEZONE, TRUE }, /* 99 M_FILEGLOB */
{ 0, KMZ_MALLOC, FALSE }, /* 100 M_KAUTH */
{ 0, KMZ_MALLOC, FALSE }, /* 101 M_DUMMYNET */
-#ifndef __LP64__
- { SOS(unsafe_fsnode),KMZ_CREATEZONE, FALSE }, /* 102 M_UNSAFEFS */
-#else
{ 0, KMZ_MALLOC, FALSE }, /* 102 M_UNSAFEFS */
-#endif /* __LP64__ */
{ 0, KMZ_MALLOC, FALSE }, /* 103 M_MACPIPELABEL */
{ 0, KMZ_MALLOC, FALSE }, /* 104 M_MACTEMP */
{ 0, KMZ_MALLOC, FALSE }, /* 105 M_SBUF */
{ 0, KMZ_MALLOC, FALSE }, /* 107 M_LCTX */
{ 0, KMZ_MALLOC, FALSE }, /* 108 M_TRAFFIC_MGT */
#if HFS_COMPRESSION
- { SOS(decmpfs_cnode),KMZ_CREATEZONE, FALSE }, /* 109 M_DECMPFS_CNODE */
+ { SOS(decmpfs_cnode),KMZ_CREATEZONE , FALSE}, /* 109 M_DECMPFS_CNODE */
#else
{ 0, KMZ_MALLOC, FALSE }, /* 109 M_DECMPFS_CNODE */
#endif /* HFS_COMPRESSION */
+ { 0, KMZ_MALLOC, FALSE }, /* 110 M_INMFILTER */
+ { 0, KMZ_MALLOC, FALSE }, /* 111 M_IPMSOURCE */
+ { 0, KMZ_MALLOC, FALSE }, /* 112 M_IN6MFILTER */
+ { 0, KMZ_MALLOC, FALSE }, /* 113 M_IP6MOPTS */
+ { 0, KMZ_MALLOC, FALSE }, /* 114 M_IP6MSOURCE */
+#if FLOW_DIVERT
+ { SOS(flow_divert_pcb), KMZ_CREATEZONE, TRUE }, /* 115 M_FLOW_DIVERT_PCB */
+ { SOS(flow_divert_group), KMZ_CREATEZONE, TRUE }, /* 116 M_FLOW_DIVERT_GROUP */
+#else
+ { 0, KMZ_MALLOC, FALSE }, /* 115 M_FLOW_DIVERT_PCB */
+ { 0, KMZ_MALLOC, FALSE }, /* 116 M_FLOW_DIVERT_GROUP */
+#endif /* FLOW_DIVERT */
+ { 0, KMZ_MALLOC, FALSE }, /* 117 M_IP6CGA */
#undef SOS
#undef SOX
};
;
else
/* XXX */
- if (kmz->kz_zalloczone == KMZ_CREATEZONE) {
+ if (kmz->kz_zalloczone == KMZ_CREATEZONE ||
+ kmz->kz_zalloczone == KMZ_CREATEZONE_ACCT) {
kmz->kz_zalloczone = zinit(kmz->kz_elemsize,
1024 * 1024, PAGE_SIZE,
memname[kmz - kmzones]);
+ zone_change(kmz->kz_zalloczone, Z_CALLERACCT,
+ (kmz->kz_zalloczone == KMZ_CREATEZONE_ACCT));
+
if (kmz->kz_noencrypt == TRUE)
zone_change(kmz->kz_zalloczone, Z_NOENCRYPT, TRUE);
}
}
}
-#define MDECL(reqlen) \
-union { \
- struct _mhead hdr; \
- char _m[(reqlen) + sizeof (struct _mhead)]; \
-}
-
struct _mhead {
size_t mlen;
char dat[0];
int type,
int flags)
{
- MDECL(size) *mem;
- size_t memsize = sizeof (*mem);
+ struct _mhead *hdr = NULL;
+ size_t memsize = sizeof (*hdr) + size;
if (type >= M_LAST)
panic("_malloc TYPE");
return (NULL);
if (flags & M_NOWAIT) {
- mem = (void *)kalloc_noblock(memsize);
+ if (size > memsize) /* overflow detected */
+ return (NULL);
+ else
+ hdr = (void *)kalloc_noblock(memsize);
} else {
- mem = (void *)kalloc(memsize);
-
- if (mem == NULL) {
+ if (size > memsize) {
+ /*
+ * We get here when the caller told us to block, waiting for memory but an overflow
+ * has been detected. The caller isn't expecting a NULL return code so we panic
+ * with a descriptive message.
+ */
+ panic("_MALLOC: overflow detected, size %llu ", (uint64_t) size);
+ }
+ else
+ hdr = (void *)kalloc(memsize);
+
+ if (hdr == NULL) {
/*
* We get here when the caller told us to block waiting for memory, but
panic("_MALLOC: kalloc returned NULL (potential leak), size %llu", (uint64_t) size);
}
}
- if (!mem)
+ if (!hdr)
return (0);
- mem->hdr.mlen = memsize;
+ hdr->mlen = memsize;
if (flags & M_ZERO)
- bzero(mem->hdr.dat, size);
+ bzero(hdr->dat, size);
- return (mem->hdr.dat);
+ return (hdr->dat);
}
void
kfree(hdr, hdr->mlen);
}
+void *
+_REALLOC(
+ void *addr,
+ size_t size,
+ int type,
+ int flags)
+{
+ struct _mhead *hdr;
+ void *newaddr;
+ size_t alloc;
+
+ /* realloc(NULL, ...) is equivalent to malloc(...) */
+ if (addr == NULL)
+ return (_MALLOC(size, type, flags));
+
+ /* Allocate a new, bigger (or smaller) block */
+ if ((newaddr = _MALLOC(size, type, flags)) == NULL)
+ return (NULL);
+
+ hdr = addr;
+ --hdr;
+ alloc = hdr->mlen - sizeof (*hdr);
+
+ /* Copy over original contents */
+ bcopy(addr, newaddr, MIN(size, alloc));
+ _FREE(addr, type);
+
+ return (newaddr);
+}
+
void *
_MALLOC_ZONE(
size_t size,
else
kfree(elem, size);
}
+
+#if CONFIG_ZLEAKS
+
+SYSCTL_DECL(_kern_zleak);
+SYSCTL_NODE(_kern, OID_AUTO, zleak, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "zleak");
+
+/*
+ * 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;
+
+ 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);
+ }
+ return (0);
+}
+
+SYSCTL_PROC(_kern_zleak, OID_AUTO, active,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
+ 0, 0, sysctl_zleak_active, "I", "zleak activity");
+
+/*
+ * 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 sysctl_handle_quad(oidp, &zmap_max_size, arg2, req);
+}
+
+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
+{
+#pragma unused(oidp, arg2)
+ int error;
+ uint64_t value = *(vm_size_t *)arg1;
+
+ error = sysctl_io_number(req, value, sizeof (value), &value, NULL);
+
+ if (error || !req->newptr)
+ return (error);
+
+ if (value > (uint64_t)zleak_max_zonemap_size)
+ return (ERANGE);
+
+ *(vm_size_t *)arg1 = value;
+ return (0);
+}
+
+/*
+ * 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 */
projects / apple / xnu.git / blobdiff