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authorSverker Eriksson <[email protected]>2011-02-04 12:07:54 +0100
committerSverker Eriksson <[email protected]>2011-02-18 15:12:51 +0100
commit35b85a49dc4ea6febc4cdb4a7024bb7a9aab72be (patch)
tree26b216b9d7614d9daa49cb61313e16c311ddb000 /erts/emulator
parent2e0181837dbe96a4ce738a339a9a02a6e26746f8 (diff)
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Refuse to load NIF library on wrong VM variant (halfword/fullword)
Diffstat (limited to 'erts/emulator')
-rw-r--r--erts/emulator/beam/erl_nif.c8
-rw-r--r--erts/emulator/beam/erl_nif.h13
2 files changed, 16 insertions, 5 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index 2f9295e624..135c6b0ccc 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -1478,7 +1478,13 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
ret = load_nif_error(BIF_P, bad_lib, "Library version (%d.%d) not compatible (with %d.%d).",
entry->major, entry->minor, ERL_NIF_MAJOR_VERSION, ERL_NIF_MINOR_VERSION);
- }
+ }
+ else if (entry->minor >= 1
+ && sys_strcmp(entry->vm_variant, ERL_NIF_VM_VARIANT) != 0) {
+ ret = load_nif_error(BIF_P, bad_lib, "Library (%s) not compiled for "
+ "this vm variant (%s).",
+ entry->vm_variant, ERL_NIF_VM_VARIANT);
+ }
else if (!erts_is_atom_str((char*)entry->name, mod_atom)) {
ret = load_nif_error(BIF_P, bad_lib, "Library module name '%s' does not"
" match calling module '%T'", entry->name, mod_atom);
diff --git a/erts/emulator/beam/erl_nif.h b/erts/emulator/beam/erl_nif.h
index ee3a7cd5f4..2719e0bfc3 100644
--- a/erts/emulator/beam/erl_nif.h
+++ b/erts/emulator/beam/erl_nif.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2009-2010. All Rights Reserved.
+ * Copyright Ericsson AB 2009-2011. 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
@@ -30,9 +30,10 @@
** 0.1: R13B03
** 1.0: R13B04
** 2.0: R14A
+** 2.1: R14B02 "vm_variant"
*/
#define ERL_NIF_MAJOR_VERSION 2
-#define ERL_NIF_MINOR_VERSION 0
+#define ERL_NIF_MINOR_VERSION 1
#include <stdlib.h>
@@ -80,8 +81,10 @@ typedef long long ErlNifSInt64;
#endif
#ifdef HALFWORD_HEAP_EMULATOR
+# define ERL_NIF_VM_VARIANT "beam.halfword"
typedef unsigned int ERL_NIF_TERM;
#else
+# define ERL_NIF_VM_VARIANT "beam.vanilla"
typedef unsigned long ERL_NIF_TERM;
#endif
@@ -105,7 +108,8 @@ typedef struct enif_entry_t
int (*load) (ErlNifEnv*, void** priv_data, ERL_NIF_TERM load_info);
int (*reload) (ErlNifEnv*, void** priv_data, ERL_NIF_TERM load_info);
int (*upgrade)(ErlNifEnv*, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info);
- void (*unload) (ErlNifEnv*, void* priv_data);
+ void (*unload) (ErlNifEnv*, void* priv_data);
+ const char* vm_variant;
}ErlNifEntry;
@@ -207,7 +211,8 @@ ERL_NIF_INIT_DECL(NAME) \
#NAME, \
sizeof(FUNCS) / sizeof(*FUNCS), \
FUNCS, \
- LOAD, RELOAD, UPGRADE, UNLOAD \
+ LOAD, RELOAD, UPGRADE, UNLOAD, \
+ ERL_NIF_VM_VARIANT \
}; \
ERL_NIF_INIT_BODY; \
return &entry; \