aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/beam
diff options
context:
space:
mode:
Diffstat (limited to 'erts/emulator/beam')
-rw-r--r--erts/emulator/beam/atom.names11
-rw-r--r--erts/emulator/beam/bif.tab15
-rw-r--r--erts/emulator/beam/external.c111
-rw-r--r--erts/emulator/beam/external.h26
4 files changed, 126 insertions, 37 deletions
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index 04eac2d807..3ce26c4a7a 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -1,19 +1,19 @@
#
# %CopyrightBegin%
-#
-# Copyright Ericsson AB 1996-2009. All Rights Reserved.
-#
+#
+# Copyright Ericsson AB 1996-2010. All Rights Reserved.
+#
# The contents of this file are subject to the Erlang Public License,
# Version 1.1, (the "License"); you may not use this file except in
# compliance with the License. You should have received a copy of the
# Erlang Public License along with this software. If not, it can be
# retrieved online at http://www.erlang.org/.
-#
+#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
# the License for the specific language governing rights and limitations
# under the License.
-#
+#
# %CopyrightEnd%
#
@@ -446,6 +446,7 @@ atom running
atom running_ports
atom running_procs
atom runtime
+atom safe
atom save_calls
atom scheduler
atom scheduler_id
diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab
index 85a729208f..b6fa06354a 100644
--- a/erts/emulator/beam/bif.tab
+++ b/erts/emulator/beam/bif.tab
@@ -1,19 +1,19 @@
#
# %CopyrightBegin%
-#
-# Copyright Ericsson AB 1996-2009. All Rights Reserved.
-#
+#
+# Copyright Ericsson AB 1996-2010. All Rights Reserved.
+#
# The contents of this file are subject to the Erlang Public License,
# Version 1.1, (the "License"); you may not use this file except in
# compliance with the License. You should have received a copy of the
# Erlang Public License along with this software. If not, it can be
# retrieved online at http://www.erlang.org/.
-#
+#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
# the License for the specific language governing rights and limitations
# under the License.
-#
+#
# %CopyrightEnd%
#
@@ -755,6 +755,11 @@ bif erlang:call_on_load_function/1
bif erlang:finish_after_on_load/2
#
+# New Bifs in R13B4
+#
+bif erlang:binary_to_term/2
+
+#
# Obsolete
#
diff --git a/erts/emulator/beam/external.c b/erts/emulator/beam/external.c
index f856cce18f..f380e7732e 100644
--- a/erts/emulator/beam/external.c
+++ b/erts/emulator/beam/external.c
@@ -1,19 +1,19 @@
/*
* %CopyrightBegin%
- *
- * Copyright Ericsson AB 1996-2009. All Rights Reserved.
- *
+ *
+ * Copyright Ericsson AB 1996-2010. All Rights Reserved.
+ *
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
- *
+ *
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
- *
+ *
* %CopyrightEnd%
*/
@@ -1059,10 +1059,10 @@ binary2term_abort(ErtsBinary2TermState *state)
}
static ERTS_INLINE Eterm
-binary2term_create(ErtsBinary2TermState *state, Eterm **hpp, ErlOffHeap *ohp)
+binary2term_create(ErtsDistExternal *edep, ErtsBinary2TermState *state, Eterm **hpp, ErlOffHeap *ohp)
{
Eterm res;
- if (!dec_term(NULL, hpp, state->extp, ohp, &res))
+ if (!dec_term(edep, hpp, state->extp, ohp, &res))
res = THE_NON_VALUE;
if (state->exttmp) {
state->exttmp = 0;
@@ -1086,7 +1086,7 @@ erts_binary2term_abort(ErtsBinary2TermState *state)
Eterm
erts_binary2term_create(ErtsBinary2TermState *state, Eterm **hpp, ErlOffHeap *ohp)
{
- return binary2term_create(state, hpp, ohp);
+ return binary2term_create(NULL,state, hpp, ohp);
}
BIF_RETTYPE binary_to_term_1(BIF_ALIST_1)
@@ -1114,7 +1114,67 @@ BIF_RETTYPE binary_to_term_1(BIF_ALIST_1)
hp = HAlloc(BIF_P, heap_size);
endp = hp + heap_size;
- res = binary2term_create(&b2ts, &hp, &MSO(BIF_P));
+ res = binary2term_create(NULL, &b2ts, &hp, &MSO(BIF_P));
+
+ erts_free_aligned_binary_bytes(temp_alloc);
+
+ if (hp > endp) {
+ erl_exit(1, ":%s, line %d: heap overrun by %d words(s)\n",
+ __FILE__, __LINE__, hp-endp);
+ }
+
+ HRelease(BIF_P, endp, hp);
+
+ if (res == THE_NON_VALUE)
+ goto error;
+
+ return res;
+}
+
+BIF_RETTYPE binary_to_term_2(BIF_ALIST_2)
+{
+ Sint heap_size;
+ Eterm res;
+ Eterm opts;
+ Eterm opt;
+ Eterm* hp;
+ Eterm* endp;
+ Sint size;
+ byte* bytes;
+ byte* temp_alloc = NULL;
+ ErtsBinary2TermState b2ts;
+ ErtsDistExternal fakedep;
+
+ fakedep.flags = 0;
+ opts = BIF_ARG_2;
+ while (is_list(opts)) {
+ opt = CAR(list_val(opts));
+ if (opt == am_safe) {
+ fakedep.flags |= ERTS_DIST_EXT_BTT_SAFE;
+ } else {
+ goto error;
+ }
+ opts = CDR(list_val(opts));
+ }
+
+ if (is_not_nil(opts))
+ goto error;
+
+ if ((bytes = erts_get_aligned_binary_bytes(BIF_ARG_1, &temp_alloc)) == NULL) {
+ error:
+ erts_free_aligned_binary_bytes(temp_alloc);
+ BIF_ERROR(BIF_P, BADARG);
+ }
+ size = binary_size(BIF_ARG_1);
+
+ heap_size = binary2term_prepare(&b2ts, bytes, size);
+ if (heap_size < 0)
+ goto error;
+
+ hp = HAlloc(BIF_P, heap_size);
+ endp = hp + heap_size;
+
+ res = binary2term_create(&fakedep, &b2ts, &hp, &MSO(BIF_P));
erts_free_aligned_binary_bytes(temp_alloc);
@@ -1300,7 +1360,7 @@ dec_atom(ErtsDistExternal *edep, byte* ep, Eterm* objp)
switch (*ep++) {
case ATOM_CACHE_REF:
- if (!(edep->flags & ERTS_DIST_EXT_ATOM_TRANS_TAB))
+ if (!(edep && (edep->flags & ERTS_DIST_EXT_ATOM_TRANS_TAB)))
goto error;
n = get_int8(ep);
ep++;
@@ -1312,13 +1372,18 @@ dec_atom(ErtsDistExternal *edep, byte* ep, Eterm* objp)
case ATOM_EXT:
len = get_int16(ep),
ep += 2;
- *objp = am_atom_put((char*)ep, len);
- ep += len;
- break;
+ goto dec_atom_common;
case SMALL_ATOM_EXT:
len = get_int8(ep);
ep++;
- *objp = am_atom_put((char*)ep, len);
+ dec_atom_common:
+ if (edep && (edep->flags & ERTS_DIST_EXT_BTT_SAFE)) {
+ if (!erts_atom_get((char*)ep, len, objp)) {
+ goto error;
+ }
+ } else {
+ *objp = am_atom_put((char*)ep, len);
+ }
ep += len;
break;
default:
@@ -1864,13 +1929,18 @@ dec_term(ErtsDistExternal *edep, Eterm** hpp, byte* ep, ErlOffHeap* off_heap, Et
case ATOM_EXT:
n = get_int16(ep);
ep += 2;
- *objp = am_atom_put((char*)ep, n);
- ep += n;
- break;
+ goto dec_term_atom_common;
case SMALL_ATOM_EXT:
n = get_int8(ep);
ep++;
- *objp = am_atom_put((char*)ep, n);
+dec_term_atom_common:
+ if (edep && (edep->flags & ERTS_DIST_EXT_BTT_SAFE)) {
+ if (!erts_atom_get((char*)ep, n, objp)) {
+ goto error;
+ }
+ } else {
+ *objp = am_atom_put((char*)ep, n);
+ }
ep += n;
break;
case LARGE_TUPLE_EXT:
@@ -2039,7 +2109,6 @@ dec_term(ErtsDistExternal *edep, Eterm** hpp, byte* ep, ErlOffHeap* off_heap, Et
goto ref_ext_common;
case NEW_REFERENCE_EXT:
-
ref_words = get_int16(ep);
ep += 2;
@@ -2218,6 +2287,10 @@ dec_term(ErtsDistExternal *edep, Eterm** hpp, byte* ep, ErlOffHeap* off_heap, Et
if (arity < 0) {
goto error;
}
+ if (edep && (edep->flags & ERTS_DIST_EXT_BTT_SAFE)) {
+ if (!erts_find_export_entry(mod, name, arity))
+ goto error;
+ }
*objp = make_export(hp);
*hp++ = HEADER_EXPORT;
*hp++ = (Eterm) erts_export_get_or_make_stub(mod, name, arity);
diff --git a/erts/emulator/beam/external.h b/erts/emulator/beam/external.h
index f308680f89..eada6d4f27 100644
--- a/erts/emulator/beam/external.h
+++ b/erts/emulator/beam/external.h
@@ -1,19 +1,19 @@
/*
* %CopyrightBegin%
- *
- * Copyright Ericsson AB 1996-2009. All Rights Reserved.
- *
+ *
+ * Copyright Ericsson AB 1996-2010. All Rights Reserved.
+ *
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
- *
+ *
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
- *
+ *
* %CopyrightEnd%
*/
@@ -98,9 +98,19 @@ typedef struct {
Eterm atom[ERTS_ATOM_CACHE_SIZE];
} ErtsAtomTranslationTable;
-#define ERTS_DIST_EXT_DFLAG_HDR (((Uint32) 1) << 31)
-#define ERTS_DIST_EXT_ATOM_TRANS_TAB (((Uint32) 1) << 30)
-#define ERTS_DIST_EXT_CON_ID_MASK ((Uint32) 0x3fffffff)
+/*
+ * These flags are tagged onto the high bits of a connection ID and stored in
+ * the ErtsDistExternal structure's flags field. They are used to indicate
+ * various bits of state necessary to decode binaries in a variety of
+ * scenarios. The mask ERTS_DIST_EXT_CON_ID_MASK is used later to separate the
+ * connection ID from the flags. Be careful to ensure that the mask does not
+ * overlap any of the bits used for flags, or ERTS will leak flags bits into
+ * connection IDs and leak connection ID bits into the flags.
+ */
+#define ERTS_DIST_EXT_DFLAG_HDR ((Uint32) 0x80000000)
+#define ERTS_DIST_EXT_ATOM_TRANS_TAB ((Uint32) 0x40000000)
+#define ERTS_DIST_EXT_BTT_SAFE ((Uint32) 0x20000000)
+#define ERTS_DIST_EXT_CON_ID_MASK ((Uint32) 0x1fffffff)
#define ERTS_DIST_EXT_CON_ID(DIST_EXTP) \
((DIST_EXTP)->flags & ERTS_DIST_EXT_CON_ID_MASK)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-20 16:04:34 +0000