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-rw-r--r--lib/crypto/c_src/crypto.c61
-rw-r--r--lib/crypto/doc/src/crypto.xml42
-rw-r--r--lib/crypto/doc/src/notes.xml17
-rw-r--r--lib/crypto/src/crypto.erl25
-rw-r--r--lib/crypto/test/crypto_SUITE.erl33
-rw-r--r--lib/crypto/vsn.mk2
-rw-r--r--lib/kernel/src/inet_res.erl203
-rw-r--r--lib/kernel/test/file_SUITE.erl4
-rw-r--r--lib/kernel/test/inet_res_SUITE.erl127
-rw-r--r--lib/ssh/doc/src/notes.xml13
-rw-r--r--lib/ssh/src/ssh.appup.src26
-rwxr-xr-xlib/ssh/src/ssh_bits.erl56
-rw-r--r--lib/ssh/src/ssh_connection_handler.erl4
-rw-r--r--lib/ssh/vsn.mk2
-rw-r--r--lib/ssl/doc/src/ssl.xml2
-rw-r--r--lib/stdlib/doc/src/supervisor.xml43
-rw-r--r--lib/stdlib/src/pool.erl3
-rw-r--r--lib/stdlib/src/supervisor.erl58
-rw-r--r--lib/stdlib/test/supervisor_SUITE.erl32
19 files changed, 548 insertions, 205 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index b8786f6f94..3ebf62d87c 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -134,7 +134,9 @@ static ERL_NIF_TERM des_ede3_cbc_crypt(ErlNifEnv* env, int argc, const ERL_NIF_T
static ERL_NIF_TERM aes_cfb_128_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM aes_ctr_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM rand_bytes_1(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM strong_rand_bytes_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM rand_bytes_3(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM strong_rand_mpint_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM rand_uniform_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM mod_exp_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM dss_verify(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
@@ -204,7 +206,9 @@ static ErlNifFunc nif_funcs[] = {
{"aes_ctr_encrypt", 3, aes_ctr_encrypt},
{"aes_ctr_decrypt", 3, aes_ctr_encrypt},
{"rand_bytes", 1, rand_bytes_1},
+ {"strong_rand_bytes_nif", 1, strong_rand_bytes_nif},
{"rand_bytes", 3, rand_bytes_3},
+ {"strong_rand_mpint_nif", 3, strong_rand_mpint_nif},
{"rand_uniform_nif", 2, rand_uniform_nif},
{"mod_exp_nif", 3, mod_exp_nif},
{"dss_verify", 4, dss_verify},
@@ -704,6 +708,22 @@ static ERL_NIF_TERM rand_bytes_1(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar
ERL_VALGRIND_MAKE_MEM_DEFINED(data, bytes);
return ret;
}
+static ERL_NIF_TERM strong_rand_bytes_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Bytes) */
+ unsigned bytes;
+ unsigned char* data;
+ ERL_NIF_TERM ret;
+ if (!enif_get_uint(env, argv[0], &bytes)) {
+ return enif_make_badarg(env);
+ }
+ data = enif_make_new_binary(env, bytes, &ret);
+ if ( RAND_bytes(data, bytes) != 1) {
+ return atom_false;
+ }
+ ERL_VALGRIND_MAKE_MEM_DEFINED(data, bytes);
+ return ret;
+}
+
static ERL_NIF_TERM rand_bytes_3(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{/* (Bytes, TopMask, BottomMask) */
unsigned bytes;
@@ -724,6 +744,47 @@ static ERL_NIF_TERM rand_bytes_3(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar
}
return ret;
}
+static ERL_NIF_TERM strong_rand_mpint_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Bytes, TopMask, BottomMask) */
+ unsigned bits;
+ BIGNUM *bn_rand;
+ int top, bottom;
+ unsigned char* data;
+ unsigned dlen;
+ ERL_NIF_TERM ret;
+ if (!enif_get_uint(env, argv[0], &bits)
+ || !enif_get_int(env, argv[1], &top)
+ || !enif_get_int(env, argv[2], &bottom)) {
+ return enif_make_badarg(env);
+ }
+ if (! (top == -1 || top == 0 || top == 1) ) {
+ return enif_make_badarg(env);
+ }
+ if (! (bottom == 0 || bottom == 1) ) {
+ return enif_make_badarg(env);
+ }
+
+ bn_rand = BN_new();
+ if (! bn_rand ) {
+ return enif_make_badarg(env);
+ }
+
+ /* Get a (bits) bit random number */
+ if (!BN_rand(bn_rand, bits, top, bottom)) {
+ ret = atom_false;
+ }
+ else {
+ /* Copy the bignum into an erlang mpint binary. */
+ dlen = BN_num_bytes(bn_rand);
+ data = enif_make_new_binary(env, dlen+4, &ret);
+ put_int32(data, dlen);
+ BN_bn2bin(bn_rand, data+4);
+ ERL_VALGRIND_MAKE_MEM_DEFINED(data+4, dlen);
+ }
+ BN_free(bn_rand);
+
+ return ret;
+}
static int get_bn_from_mpint(ErlNifEnv* env, ERL_NIF_TERM term, BIGNUM** bnp)
{
diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml
index dfafe67348..1ccea6df79 100644
--- a/lib/crypto/doc/src/crypto.xml
+++ b/lib/crypto/doc/src/crypto.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1999</year><year>2010</year>
+ <year>1999</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -619,6 +619,21 @@ Mpint() = <![CDATA[<<ByteLen:32/integer-big, Bytes:ByteLen/binary>>]]>
</desc>
</func>
<func>
+ <name>strong_rand_bytes(N) -> binary()</name>
+ <fsummary>Generate a binary of random bytes</fsummary>
+ <type>
+ <v>N = integer()</v>
+ </type>
+ <desc>
+ <p>Generates N bytes randomly uniform 0..255, and returns the
+ result in a binary. Uses a cryptographically secure prng seeded and
+ periodically mixed with operating system provided entropy. By default
+ this is the <c>RAND_bytes</c> method from OpenSSL.</p>
+ <p>May throw exception <c>low_entropy</c> in case the random generator
+ failed due to lack of secure "randomness".</p>
+ </desc>
+ </func>
+ <func>
<name>rand_uniform(Lo, Hi) -> N</name>
<fsummary>Generate a random number</fsummary>
<type>
@@ -633,6 +648,31 @@ Mpint() = <![CDATA[<<ByteLen:32/integer-big, Bytes:ByteLen/binary>>]]>
</desc>
</func>
<func>
+ <name>strong_rand_mpint(N, Top, Bottom) -> Mpint</name>
+ <fsummary>Generate an N bit random number</fsummary>
+ <type>
+ <v>N = non_neg_integer()</v>
+ <v>Top = -1 | 0 | 1</v>
+ <v>Bottom = 0 | 1</v>
+ <v>Mpint = binary()</v>
+ </type>
+ <desc>
+ <p>Generate an N bit random number using OpenSSL's
+ cryptographically strong pseudo random number generator
+ <c>BN_rand</c>.</p>
+ <p>The parameter <c>Top</c> places constraints on the most
+ significant bits of the generated number. If <c>Top</c> is 1, then the
+ two most significant bits will be set to 1, if <c>Top</c> is 0, the
+ most significant bit will be 1, and if <c>Top</c> is -1 then no
+ constraints are applied and thus the generated number may be less than
+ N bits long.</p>
+ <p>If <c>Bottom</c> is 1, then the generated number is
+ constrained to be odd.</p>
+ <p>May throw exception <c>low_entropy</c> in case the random generator
+ failed due to lack of secure "randomness".</p>
+ </desc>
+ </func>
+ <func>
<name>mod_exp(N, P, M) -> Result</name>
<fsummary>Perform N ^ P mod M</fsummary>
<type>
diff --git a/lib/crypto/doc/src/notes.xml b/lib/crypto/doc/src/notes.xml
index 5e9bda3920..ab1ffa9e5c 100644
--- a/lib/crypto/doc/src/notes.xml
+++ b/lib/crypto/doc/src/notes.xml
@@ -4,7 +4,7 @@
<chapter>
<header>
<copyright>
- <year>1999</year><year>2010</year>
+ <year>1999</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -30,6 +30,21 @@
</header>
<p>This document describes the changes made to the Crypto application.</p>
+<section><title>Crypto 2.0.2.2</title>
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ Strengthened random number generation. (Thanks to Geoff Cant)</p>
+ <p>
+ Own Id: OTP-9225</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Crypto 2.0.2.1</title>
<section><title>Improvements and New Features</title>
diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl
index d6e2e033c0..cc7b3acc9c 100644
--- a/lib/crypto/src/crypto.erl
+++ b/lib/crypto/src/crypto.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2011. 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
@@ -46,6 +46,7 @@
-export([rsa_private_encrypt/3, rsa_public_decrypt/3]).
-export([dh_generate_key/1, dh_generate_key/2, dh_compute_key/3]).
-export([rand_bytes/1, rand_bytes/3, rand_uniform/2]).
+-export([strong_rand_bytes/1, strong_rand_mpint/3]).
-export([mod_exp/3, mpint/1, erlint/1]).
%% -export([idea_cbc_encrypt/3, idea_cbc_decrypt/3]).
-export([aes_cbc_128_encrypt/3, aes_cbc_128_decrypt/3]).
@@ -68,6 +69,8 @@
des_ede3_cbc_encrypt, des_ede3_cbc_decrypt,
aes_cfb_128_encrypt, aes_cfb_128_decrypt,
rand_bytes,
+ strong_rand_bytes,
+ strong_rand_mpint,
rand_uniform,
mod_exp,
dss_verify,dss_sign,
@@ -361,12 +364,32 @@ aes_cfb_128_crypt(_Key, _IVec, _Data, _IsEncrypt) -> ?nif_stub.
%% RAND - pseudo random numbers using RN_ functions in crypto lib
%%
-spec rand_bytes(non_neg_integer()) -> binary().
+-spec strong_rand_bytes(non_neg_integer()) -> binary().
-spec rand_uniform(crypto_integer(), crypto_integer()) ->
crypto_integer().
+-spec strong_rand_mpint(Bits::non_neg_integer(),
+ Top::-1..1,
+ Bottom::0..1) -> binary().
rand_bytes(_Bytes) -> ?nif_stub.
+
+strong_rand_bytes(Bytes) ->
+ case strong_rand_bytes_nif(Bytes) of
+ false -> erlang:error(low_entropy);
+ Bin -> Bin
+ end.
+strong_rand_bytes_nif(_Bytes) -> ?nif_stub.
+
rand_bytes(_Bytes, _Topmask, _Bottommask) -> ?nif_stub.
+strong_rand_mpint(Bits, Top, Bottom) ->
+ case strong_rand_mpint_nif(Bits,Top,Bottom) of
+ false -> erlang:error(low_entropy);
+ Bin -> Bin
+ end.
+strong_rand_mpint_nif(_Bits, _Top, _Bottom) -> ?nif_stub.
+
+
rand_uniform(From,To) when is_binary(From), is_binary(To) ->
case rand_uniform_nif(From,To) of
<<Len:32/integer, MSB, Rest/binary>> when MSB > 127 ->
diff --git a/lib/crypto/test/crypto_SUITE.erl b/lib/crypto/test/crypto_SUITE.erl
index fe8f8e69a0..854a8b4485 100644
--- a/lib/crypto/test/crypto_SUITE.erl
+++ b/lib/crypto/test/crypto_SUITE.erl
@@ -46,6 +46,7 @@
aes_ctr/1,
mod_exp_test/1,
rand_uniform_test/1,
+ strong_rand_test/1,
rsa_verify_test/1,
dsa_verify_test/1,
rsa_sign_test/1,
@@ -68,7 +69,8 @@ all() ->
md5_mac_io, sha, sha_update,
%% sha256, sha256_update, sha512,sha512_update,
des_cbc, aes_cfb, aes_cbc,
- aes_cbc_iter, aes_ctr, des_cbc_iter, des_ecb, rand_uniform_test,
+ aes_cbc_iter, aes_ctr, des_cbc_iter, des_ecb,
+ rand_uniform_test, strong_rand_test,
rsa_verify_test, dsa_verify_test, rsa_sign_test,
dsa_sign_test, rsa_encrypt_decrypt, dh, exor_test,
rc4_test, rc4_stream_test, mod_exp_test, blowfish_cfb64,
@@ -710,6 +712,33 @@ rand_uniform_aux_test(N) ->
%%
%%
+strong_rand_test(doc) ->
+ "strong_rand_mpint and strong_random_bytes testing";
+strong_rand_test(suite) ->
+ [];
+strong_rand_test(Config) when is_list(Config) ->
+ strong_rand_aux_test(180),
+ ?line 10 = byte_size(crypto:strong_rand_bytes(10)).
+
+strong_rand_aux_test(0) ->
+ ?line t(crypto:strong_rand_mpint(0,0,0) =:= <<0,0,0,0>>),
+ ok;
+strong_rand_aux_test(1) ->
+ ?line t(crypto:erlint(crypto:strong_rand_mpint(1,0,1)) =:= 1),
+ ?line strong_rand_aux_test(0);
+strong_rand_aux_test(N) ->
+ ?line t(sru_length(crypto:strong_rand_mpint(N,-1,0)) =< N),
+ ?line t(sru_length(crypto:strong_rand_mpint(N,0,0)) =:= N),
+ ?line t(crypto:erlint(crypto:strong_rand_mpint(N,0,1)) band 1 =:= 1),
+ ?line t(crypto:erlint(crypto:strong_rand_mpint(N,1,0)) bsr (N - 2) =:= 2#11),
+ ?line strong_rand_aux_test(N-1).
+
+sru_length(Mpint) ->
+ I = crypto:erlint(Mpint),
+ length(erlang:integer_to_list(I, 2)).
+
+%%
+%%
%%
%%
rsa_verify_test(doc) ->
@@ -1097,7 +1126,7 @@ worker_loop(0, _) ->
ok;
worker_loop(N, Config) ->
Funcs = { md5, md5_update, md5_mac, md5_mac_io, sha, sha_update, des_cbc,
- aes_cfb, aes_cbc, des_cbc_iter, rand_uniform_test,
+ aes_cfb, aes_cbc, des_cbc_iter, rand_uniform_test, strong_rand_test,
rsa_verify_test, exor_test, rc4_test, rc4_stream_test, mod_exp_test },
F = element(random:uniform(size(Funcs)),Funcs),
diff --git a/lib/crypto/vsn.mk b/lib/crypto/vsn.mk
index e2d6fd0b37..740c68d8fa 100644
--- a/lib/crypto/vsn.mk
+++ b/lib/crypto/vsn.mk
@@ -1 +1 @@
-CRYPTO_VSN = 2.0.2.1
+CRYPTO_VSN = 2.0.2.2
diff --git a/lib/kernel/src/inet_res.erl b/lib/kernel/src/inet_res.erl
index de0f23bf24..93563c6011 100644
--- a/lib/kernel/src/inet_res.erl
+++ b/lib/kernel/src/inet_res.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1997-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2011. 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
@@ -539,27 +539,41 @@ udp_send(#sock{inet=I}, {A,B,C,D}=IP, Port, Buffer)
when ?ip(A,B,C,D), ?port(Port) ->
gen_udp:send(I, IP, Port, Buffer).
-udp_recv(#sock{inet6=I}, {A,B,C,D,E,F,G,H}=IP, Port, Timeout)
+udp_recv(#sock{inet6=I}, {A,B,C,D,E,F,G,H}=IP, Port, Timeout, Decode)
when ?ip6(A,B,C,D,E,F,G,H), ?port(Port) ->
- do_udp_recv(fun(T) -> gen_udp:recv(I, 0, T) end, IP, Port, Timeout);
-udp_recv(#sock{inet=I}, {A,B,C,D}=IP, Port, Timeout)
+ do_udp_recv(I, IP, Port, Timeout, Decode, erlang:now(), Timeout);
+udp_recv(#sock{inet=I}, {A,B,C,D}=IP, Port, Timeout, Decode)
when ?ip(A,B,C,D), ?port(Port) ->
- do_udp_recv(fun(T) -> gen_udp:recv(I, 0, T) end, IP, Port, Timeout).
-
-do_udp_recv(Recv, IP, Port, Timeout) ->
- do_udp_recv(Recv, IP, Port, Timeout,
- if Timeout =/= 0 -> erlang:now(); true -> undefined end).
-
-do_udp_recv(Recv, IP, Port, Timeout, Then) ->
- case Recv(Timeout) of
- {ok,{IP,Port,Answer}} ->
- {ok,Answer,erlang:max(0, Timeout - now_ms(erlang:now(), Then))};
- {ok,_} when Timeout =:= 0 ->
- {error,timeout};
- {ok,_} ->
- Now = erlang:now(),
- T = erlang:max(0, Timeout - now_ms(Now, Then)),
- do_udp_recv(Recv, IP, Port, T, Now);
+ do_udp_recv(I, IP, Port, Timeout, Decode, erlang:now(), Timeout).
+
+do_udp_recv(_I, _IP, _Port, 0, _Decode, _Start, _T) ->
+ timeout;
+do_udp_recv(I, IP, Port, Timeout, Decode, Start, T) ->
+ case gen_udp:recv(I, 0, T) of
+ {ok,Reply} ->
+ case Decode(Reply) of
+ false when T =:= 0 ->
+ %% This is a compromize between the hard way i.e
+ %% in the clause below if NewT becomes 0 bailout
+ %% immediately and risk that the right reply lies
+ %% ahead after some bad id replies, and the
+ %% forgiving way i.e go on with Timeout 0 until
+ %% the right reply comes or no reply (timeout)
+ %% which opens for a DOS attack by a malicious
+ %% DNS server flooding with bad id replies causing
+ %% an infinite loop here.
+ %%
+ %% Timeout is used as a sanity limit counter
+ %% just to put an end to the loop.
+ NewTimeout = erlang:max(0, Timeout - 50),
+ do_udp_recv(I, IP, Port, NewTimeout, Decode, Start, T);
+ false ->
+ Now = erlang:now(),
+ NewT = erlang:max(0, Timeout - now_ms(Now, Start)),
+ do_udp_recv(I, IP, Port, Timeout, Decode, Start, NewT);
+ Result ->
+ Result
+ end;
Error -> Error
end.
@@ -580,6 +594,17 @@ udp_close(#sock{inet=I,inet6=I6}) ->
%% end
%% end
%%
+%% But that man page also says dig always use num_servers = 1.
+%%
+%% Our man page says: timeout/retry, then double for next retry, i.e
+%% for i = 0 to retry - 1
+%% foreach nameserver
+%% send query
+%% wait((time * (2**i)) / retry)
+%% end
+%% end
+%%
+%% And that is what the code seems to do, now fixed, hopefully...
do_query(_Q, [], _Timer) ->
{error,nxdomain};
@@ -589,19 +614,16 @@ do_query(#q{options=#options{retry=Retry}}=Q, NSs, Timer) ->
query_retries(_Q, _NSs, _Timer, Retry, Retry, S) ->
udp_close(S),
{error,timeout};
+query_retries(_Q, [], _Timer, _Retry, _I, S) ->
+ udp_close(S),
+ {error,timeout};
query_retries(Q, NSs, Timer, Retry, I, S0) ->
- Num = length(NSs),
- if Num =:= 0 ->
- udp_close(S0),
- {error,timeout};
- true ->
- case query_nss(Q, NSs, Timer, Retry, I, S0, []) of
- {S,{noanswer,ErrNSs}} -> %% remove unreachable nameservers
- query_retries(Q, NSs--ErrNSs, Timer, Retry, I+1, S);
- {S,Result} ->
- udp_close(S),
- Result
- end
+ case query_nss(Q, NSs, Timer, Retry, I, S0, []) of
+ {S,{noanswer,ErrNSs}} -> %% remove unreachable nameservers
+ query_retries(Q, NSs--ErrNSs, Timer, Retry, I+1, S);
+ {S,Result} ->
+ udp_close(S),
+ Result
end.
query_nss(_Q, [], _Timer, _Retry, _I, S, ErrNSs) ->
@@ -611,13 +633,13 @@ query_nss(#q{edns=undefined}=Q, NSs, Timer, Retry, I, S, ErrNSs) ->
query_nss(Q, NSs, Timer, Retry, I, S, ErrNSs) ->
query_nss_edns(Q, NSs, Timer, Retry, I, S, ErrNSs).
-query_nss_edns(#q{options=#options{udp_payload_size=PSz}=Options,
- edns={Id,Buffer}}=Q,
- [{IP,Port}=NS|NSs]=NSs0, Timer, Retry, I, S0, ErrNSs) ->
- {S,Res}=Reply = query_ns(S0, Id, Buffer, IP, Port, Timer,
- Retry, I, Options, PSz),
+query_nss_edns(
+ #q{options=#options{udp_payload_size=PSz}=Options,edns={Id,Buffer}}=Q,
+ [{IP,Port}=NS|NSs]=NSs0, Timer, Retry, I, S0, ErrNSs) ->
+ {S,Res}=Reply =
+ query_ns(S0, Id, Buffer, IP, Port, Timer, Retry, I, Options, PSz),
case Res of
- timeout -> {S,{error,timeout}};
+ timeout -> {S,{error,timeout}}; % Bailout timeout
{ok,_} -> Reply;
{error,{nxdomain,_}} -> Reply;
{error,{E,_}} when E =:= qfmterror; E =:= notimp; E =:= servfail;
@@ -629,17 +651,19 @@ query_nss_edns(#q{options=#options{udp_payload_size=PSz}=Options,
query_nss(Q, NSs, Timer, Retry, I, S, ErrNSs)
end.
-query_nss_dns(#q{dns=Qdns}=Q0, [{IP,Port}=NS|NSs],
- Timer, Retry, I, S0, ErrNSs) ->
+query_nss_dns(
+ #q{dns=Qdns}=Q0,
+ [{IP,Port}=NS|NSs], Timer, Retry, I, S0, ErrNSs) ->
#q{options=Options,dns={Id,Buffer}}=Q =
if
is_function(Qdns, 0) -> Q0#q{dns=Qdns()};
true -> Q0
end,
- {S,Res}=Reply = query_ns(S0, Id, Buffer, IP, Port, Timer,
- Retry, I, Options, ?PACKETSZ),
+ {S,Res}=Reply =
+ query_ns(
+ S0, Id, Buffer, IP, Port, Timer, Retry, I, Options, ?PACKETSZ),
case Res of
- timeout -> {S,{error,timeout}};
+ timeout -> {S,{error,timeout}}; % Bailout timeout
{ok,_} -> Reply;
{error,{E,_}} when E =:= nxdomain; E =:= qfmterror -> Reply;
{error,E} when E =:= fmt; E =:= enetunreach; E =:= econnrefused ->
@@ -653,48 +677,66 @@ query_ns(S0, Id, Buffer, IP, Port, Timer, Retry, I,
PSz) ->
case UseVC orelse iolist_size(Buffer) > PSz of
true ->
- {S0,query_tcp(Tm, Id, Buffer, IP, Port, Timer, Verbose)};
+ TcpTimeout = inet:timeout(Tm*5, Timer),
+ {S0,query_tcp(TcpTimeout, Id, Buffer, IP, Port, Verbose)};
false ->
case udp_open(S0, IP) of
{ok,S} ->
- {S,case query_udp(S, Id, Buffer, IP, Port, Timer,
- Retry, I, Tm, Verbose) of
- {ok,#dns_rec{header=H}} when H#dns_header.tc ->
- query_tcp(Tm, Id, Buffer,
- IP, Port, Timer, Verbose);
- Reply -> Reply
- end};
+ Timeout =
+ inet:timeout( (Tm * (1 bsl I)) div Retry, Timer),
+ {S,
+ case query_udp(
+ S, Id, Buffer, IP, Port, Timeout, Verbose) of
+ {ok,#dns_rec{header=H}} when H#dns_header.tc ->
+ TcpTimeout = inet:timeout(Tm*5, Timer),
+ query_tcp(
+ TcpTimeout, Id, Buffer, IP, Port, Verbose);
+ Reply -> Reply
+ end};
Error ->
{S0,Error}
end
end.
-query_udp(S, Id, Buffer, IP, Port, Timer, Retry, I, Tm, Verbose) ->
- Timeout = inet:timeout( (Tm * (1 bsl I)) div Retry, Timer),
+query_udp(_S, _Id, _Buffer, _IP, _Port, 0, Verbose) ->
+ timeout;
+query_udp(S, Id, Buffer, IP, Port, Timeout, Verbose) ->
?verbose(Verbose, "Try UDP server : ~p:~p (timeout=~w)\n",
- [IP, Port, Timeout]),
- udp_connect(S, IP, Port),
- udp_send(S, IP, Port, Buffer),
- query_udp_recv(S, IP, Port, Id, Timeout, Verbose).
-
-query_udp_recv(S, IP, Port, Id, Timeout, Verbose) ->
- case udp_recv(S, IP, Port, Timeout) of
- {ok,Answer,T} ->
- case decode_answer(Answer, Id, Verbose) of
- {error, badid} ->
- query_udp_recv(S, IP, Port, Id, T, Verbose);
- Reply -> Reply
+ [IP,Port,Timeout]),
+ case
+ case udp_connect(S, IP, Port) of
+ ok ->
+ udp_send(S, IP, Port, Buffer);
+ E1 ->
+ E1 end of
+ ok ->
+ Decode =
+ fun ({RecIP,RecPort,Answer})
+ when RecIP =:= IP, RecPort =:= Port ->
+ case decode_answer(Answer, Id, Verbose) of
+ {error,badid} ->
+ false;
+ Reply ->
+ Reply
+ end;
+ ({_,_,_}) ->
+ false
+ end,
+ case udp_recv(S, IP, Port, Timeout, Decode) of
+ {ok,_}=Result ->
+ Result;
+ E2 ->
+ ?verbose(Verbose, "UDP server error: ~p\n", [E2]),
+ E2
end;
- {error, timeout} when Timeout =:= 0 ->
- ?verbose(Verbose, "UDP server timeout\n", []),
- timeout;
- Error ->
- ?verbose(Verbose, "UDP server error: ~p\n", [Error]),
- Error
+ E3 ->
+ ?verbose(Verbose, "UDP send failed: ~p\n", [E3]),
+ {error,econnrefused}
end.
-query_tcp(Tm, Id, Buffer, IP, Port, Timer, Verbose) ->
- Timeout = inet:timeout(Tm*5, Timer),
+query_tcp(0, _Id, _Buffer, _IP, _Port, Verbose) ->
+ timeout;
+query_tcp(Timeout, Id, Buffer, IP, Port, Verbose) ->
?verbose(Verbose, "Try TCP server : ~p:~p (timeout=~w)\n",
[IP, Port, Timeout]),
Family = case IP of
@@ -716,19 +758,10 @@ query_tcp(Tm, Id, Buffer, IP, Port, Timer, Verbose) ->
end;
Error ->
gen_tcp:close(S),
- case Error of
- {error, timeout} when Timeout =:= 0 ->
- ?verbose(Verbose, "TCP server recv timeout\n", []),
- timeout;
- _ ->
- ?verbose(Verbose, "TCP server recv error: ~p\n",
- [Error]),
- Error
- end
+ ?verbose(Verbose, "TCP server recv error: ~p\n",
+ [Error]),
+ Error
end;
- {error, timeout} when Timeout =:= 0 ->
- ?verbose(Verbose, "TCP server connect timeout\n", []),
- timeout;
Error ->
?verbose(Verbose, "TCP server error: ~p\n", [Error]),
Error
diff --git a/lib/kernel/test/file_SUITE.erl b/lib/kernel/test/file_SUITE.erl
index 8078c7d021..2f73394c4e 100644
--- a/lib/kernel/test/file_SUITE.erl
+++ b/lib/kernel/test/file_SUITE.erl
@@ -2055,6 +2055,10 @@ try_read_file_list(Fd) ->
?line Title = "Real Programmers Don't Use PASCAL</TITLE>\n",
?line Title = io:get_line(Fd, ''),
+ %% Seek past the end of the file.
+
+ ?line {ok, _} = ?FILE_MODULE:position(Fd, 25000),
+
%% Done.
?line ?FILE_MODULE:close(Fd),
diff --git a/lib/kernel/test/inet_res_SUITE.erl b/lib/kernel/test/inet_res_SUITE.erl
index 5fc8df475d..6064a9b2d9 100644
--- a/lib/kernel/test/inet_res_SUITE.erl
+++ b/lib/kernel/test/inet_res_SUITE.erl
@@ -27,7 +27,8 @@
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
init_per_testcase/2, end_per_testcase/2]).
--export([basic/1, resolve/1, edns0/1, txt_record/1, files_monitor/1]).
+-export([basic/1, resolve/1, edns0/1, txt_record/1, files_monitor/1,
+ last_ms_answer/1]).
-export([
gethostbyaddr/0, gethostbyaddr/1,
gethostbyaddr_v6/0, gethostbyaddr_v6/1,
@@ -45,6 +46,7 @@ suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[basic, resolve, edns0, txt_record, files_monitor,
+ last_ms_answer,
gethostbyaddr, gethostbyaddr_v6, gethostbyname,
gethostbyname_v6, getaddr, getaddr_v6, ipv4_to_ipv6,
host_and_addr].
@@ -64,16 +66,15 @@ init_per_group(_GroupName, Config) ->
end_per_group(_GroupName, Config) ->
Config.
-zone_dir(basic) ->
- otptest;
-zone_dir(resolve) ->
- otptest;
-zone_dir(edns0) ->
- otptest;
-zone_dir(files_monitor) ->
- otptest;
-zone_dir(_) ->
- undefined.
+zone_dir(TC) ->
+ case TC of
+ basic -> otptest;
+ resolve -> otptest;
+ edns0 -> otptest;
+ files_monitor -> otptest;
+ last_ms_answer -> otptest;
+ _ -> undefined
+ end.
init_per_testcase(Func, Config) ->
PrivDir = ?config(priv_dir, Config),
@@ -184,6 +185,88 @@ ns_printlog(Fname) ->
ok
end.
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Behaviour modifying nameserver proxy
+
+proxy_start(TC, {NS,P}) ->
+ Tag = make_ref(),
+ Parent = self(),
+ Pid =
+ spawn_link(
+ fun () ->
+ try proxy_start(TC, NS, P, Parent, Tag)
+ catch C:X ->
+ io:format(
+ "~w: ~w:~p ~p~n",
+ [self(),C,X,erlang:get_stacktrace()])
+ end
+ end),
+ receive {started,Tag,Port} ->
+ ProxyNS = {{127,0,0,1},Port},
+ {proxy,Pid,Tag,ProxyNS}
+ end.
+
+proxy_start(TC, NS, P, Parent, Tag) ->
+ {ok,Outbound} = gen_udp:open(0, [binary]),
+ ok = gen_udp:connect(Outbound, NS, P),
+ {ok,Inbound} = gen_udp:open(0, [binary]),
+ {ok,Port} = inet:port(Inbound),
+ Parent ! {started,Tag,Port},
+ proxy(TC, Outbound, NS, P, Inbound).
+
+
+%% To provoke the last_ms_answer bug (OTP-9221) the proxy
+%% * Relays the query to the right nameserver
+%% * Intercepts the reply but holds it until the timer that
+%% was started when receiving the query fires.
+%% * Repeats the reply with incorrect query ID a number of
+%% times with a short interval.
+%% * Sends the correct reply, to give a correct test result
+%% after bug correction.
+%%
+%% The repetition of an incorrect answer with tight interval will keep
+%% inet_res in an inner loop in the code that decrements the remaining
+%% time until it hits 0 which triggers a crash, if the outer timeout
+%% parameter to inet_res:resolve is so short that it runs out during
+%% these repetitions.
+proxy(last_ms_answer, Outbound, NS, P, Inbound) ->
+ receive
+ {udp,Inbound,SrcIP,SrcPort,Data} ->
+ Time =
+ inet_db:res_option(timeout) div inet_db:res_option(retry),
+ Tag = erlang:make_ref(),
+ erlang:send_after(Time - 10, self(), {time,Tag}),
+ ok = gen_udp:send(Outbound, NS, P, Data),
+ receive
+ {udp,Outbound,NS,P,Reply} ->
+ {ok,Msg} = inet_dns:decode(Reply),
+ Hdr = inet_dns:msg(Msg, header),
+ Id = inet_dns:header(Hdr, id),
+ BadHdr =
+ inet_dns:make_header(Hdr, id, (Id+1) band 16#ffff),
+ BadMsg = inet_dns:make_msg(Msg, header, BadHdr),
+ BadReply = inet_dns:encode(BadMsg),
+ receive
+ {time,Tag} ->
+ proxy__last_ms_answer(
+ Inbound, SrcIP, SrcPort, BadReply, Reply, 30)
+ end
+ end
+ end.
+
+proxy__last_ms_answer(Socket, IP, Port, _, Reply, 0) ->
+ ok = gen_udp:send(Socket, IP, Port, Reply);
+proxy__last_ms_answer(Socket, IP, Port, BadReply, Reply, N) ->
+ ok = gen_udp:send(Socket, IP, Port, BadReply),
+ receive after 1 -> ok end,
+ proxy__last_ms_answer(Socket, IP, Port, BadReply, Reply, N-1).
+
+proxy_wait({proxy,Pid,_,_}) ->
+ Mref = erlang:monitor(process, Pid),
+ receive {'DOWN',Mref,_,_,_} -> ok end.
+
+proxy_ns({proxy,_,_,ProxyNS}) -> ProxyNS.
+
%%
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -204,7 +287,7 @@ basic(Config) when is_list(Config) ->
{ok,Msg1} = inet_dns:decode(Bin1),
%%
%% resolve
- {ok,Msg2} = inet_res:resolve(Name, in, a, [{nameservers,[NS]}]),
+ {ok,Msg2} = inet_res:resolve(Name, in, a, [{nameservers,[NS]},verbose]),
io:format("~p~n", [Msg2]),
[RR2] = inet_dns:msg(Msg2, anlist),
IP = inet_dns:rr(RR2, data),
@@ -474,6 +557,26 @@ do_files_monitor(Config) ->
ok.
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+last_ms_answer(doc) ->
+ ["Answer just when timeout is triggered (OTP-9221)"];
+last_ms_answer(Config) when is_list(Config) ->
+ NS = ns(Config),
+ Name = "ns.otptest",
+ %%IP = {127,0,0,254},
+ Time = inet_db:res_option(timeout) div inet_db:res_option(retry),
+ PSpec = proxy_start(last_ms_answer, NS),
+ ProxyNS = proxy_ns(PSpec),
+ %%
+ %% resolve; whith short timeout to trigger Timeout =:= 0 in inet_res
+ {error,timeout} =
+ inet_res:resolve(
+ Name, in, a, [{nameservers,[ProxyNS]},verbose], Time + 10),
+ %%
+ proxy_wait(PSpec),
+ ok.
+
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Compatibility tests. Call the inet_SUITE tests, but with
%% lookup = [file,dns] instead of [native]
diff --git a/lib/ssh/doc/src/notes.xml b/lib/ssh/doc/src/notes.xml
index af667b1a71..224b9d4af7 100644
--- a/lib/ssh/doc/src/notes.xml
+++ b/lib/ssh/doc/src/notes.xml
@@ -29,6 +29,19 @@
<file>notes.xml</file>
</header>
+<section><title>Ssh 2.0.5</title>
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ Strengthened random number generation. (Thanks to Geoff Cant)</p>
+ <p>
+ Own Id: OTP-9225</p>
+ </item>
+ </list>
+ </section>
+</section>
+
<section><title>Ssh 2.0.4</title>
<section><title>Fixed Bugs and Malfunctions</title>
<list>
diff --git a/lib/ssh/src/ssh.appup.src b/lib/ssh/src/ssh.appup.src
index 501da8ceb9..9be8c3c7d5 100644
--- a/lib/ssh/src/ssh.appup.src
+++ b/lib/ssh/src/ssh.appup.src
@@ -19,34 +19,44 @@
{"%VSN%",
[
- {"2.0.3", [{load_module, ssh_file, soft_purge, soft_purge, []},
+ {"2.0.4", [{load_module, ssh_bits, soft_purge, soft_purge, []},
+ {load_module, ssh_connection_handler, soft_purge, soft_purge, []}]},
+ {"2.0.3", [{load_module, ssh_bits, soft_purge, soft_purge, []},
+ {load_module, ssh_connection_handler, soft_purge, soft_purge, []},
+ {load_module, ssh_file, soft_purge, soft_purge, []},
{load_module, ssh, soft_purge, soft_purge, []},
{load_module, ssh_rsa, soft_purge, soft_purge, []},
{load_module, ssh_acceptor, soft_purge, soft_purge, []},
{load_module, ssh_transport, soft_purge, soft_purge, []},
{load_module, ssh_connection_manager, soft_purge, soft_purge, []}]},
- {"2.0.2", [{load_module, ssh_file, soft_purge, soft_purge, []},
+ {"2.0.2", [{load_module, ssh_bits, soft_purge, soft_purge, []},
+ {load_module, ssh_connection_handler, soft_purge, soft_purge, []},
+ {load_module, ssh_file, soft_purge, soft_purge, []},
{load_module, ssh, soft_purge, soft_purge, []},
{load_module, ssh_rsa, soft_purge, soft_purge, []},
{load_module, ssh_acceptor, soft_purge, soft_purge, []},
{load_module, ssh_transport, soft_purge, soft_purge, []},
- {load_module, ssh_connection_manager, soft_purge, soft_purge, []}]},
- {"2.0.1", [{restart_application, ssh}]}
+ {load_module, ssh_connection_manager, soft_purge, soft_purge, []}]}
],
[
- {"2.0.3", [{load_module, ssh_file, soft_purge, soft_purge, []},
+ {"2.0.4", [{load_module, ssh_bits, soft_purge, soft_purge, []},
+ {load_module, ssh_connection_handler, soft_purge, soft_purge, []}]},
+ {"2.0.3", [{load_module, ssh_bits, soft_purge, soft_purge, []},
+ {load_module, ssh_connection_handler, soft_purge, soft_purge, []},
+ {load_module, ssh_file, soft_purge, soft_purge, []},
{load_module, ssh, soft_purge, soft_purge, []},
{load_module, ssh_rsa, soft_purge, soft_purge, []},
{load_module, ssh_acceptor, soft_purge, soft_purge, []},
{load_module, ssh_transport, soft_purge, soft_purge, []},
{load_module, ssh_connection_manager, soft_purge, soft_purge, []}]},
- {"2.0.2", [{load_module, ssh_file, soft_purge, soft_purge, []},
+ {"2.0.2", [{load_module, ssh_bits, soft_purge, soft_purge, []},
+ {load_module, ssh_connection_handler, soft_purge, soft_purge, []},
+ {load_module, ssh_file, soft_purge, soft_purge, []},
{load_module, ssh, soft_purge, soft_purge, []},
{load_module, ssh_rsa, soft_purge, soft_purge, []},
{load_module, ssh_acceptor, soft_purge, soft_purge, []},
{load_module, ssh_transport, soft_purge, soft_purge, []},
- {load_module, ssh_connection_manager, soft_purge, soft_purge, []}]},
- {"2.0.1", [{restart_application, ssh}]}
+ {load_module, ssh_connection_manager, soft_purge, soft_purge, []}]}
]
}.
diff --git a/lib/ssh/src/ssh_bits.erl b/lib/ssh/src/ssh_bits.erl
index 399581a0fd..3f0a06575c 100755
--- a/lib/ssh/src/ssh_bits.erl
+++ b/lib/ssh/src/ssh_bits.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2005-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2005-2011. 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
@@ -34,7 +34,7 @@
%% integer utils
-export([isize/1]).
-export([irandom/1, irandom/3]).
--export([random/1, random/3]).
+-export([random/1]).
-export([xor_bits/2, fill_bits/2]).
-export([i2bin/2, bin2i/1]).
@@ -401,9 +401,6 @@ xor_bits(XBits, YBits) ->
irandom(Bits) ->
irandom(Bits, 1, 0).
-%% irandom_odd(Bits) ->
-%% irandom(Bits, 1, 1).
-
%%
%% irandom(N, Top, Bottom)
%%
@@ -414,57 +411,16 @@ irandom(Bits) ->
%% Bot = 0 - do not set the least signifcant bit
%% Bot = 1 - set the least signifcant bit (i.e always odd)
%%
-irandom(0, _Top, _Bottom) ->
- 0;
-irandom(Bits, Top, Bottom) ->
- Bytes = (Bits+7) div 8,
- Skip = (8-(Bits rem 8)) rem 8,
- TMask = case Top of
- 0 -> 0;
- 1 -> 16#80;
- 2 -> 16#c0
- end,
- BMask = case Bottom of
- 0 -> 0;
- 1 -> (1 bsl Skip)
- end,
- <<X:Bits/big-unsigned-integer, _:Skip>> = random(Bytes, TMask, BMask),
- X.
+irandom(Bits, Top, Bottom) when is_integer(Top),
+ 0 =< Top, Top =< 2 ->
+ crypto:erlint(crypto:strong_rand_mpint(Bits, Top - 1, Bottom)).
%%
%% random/1
%% Generate N random bytes
%%
random(N) ->
- random(N, 0, 0).
-
-random(N, TMask, BMask) ->
- list_to_binary(rnd(N, TMask, BMask)).
-
-%% random/3
-%% random(Bytes, TopMask, BotMask)
-%% where
-%% Bytes is the number of bytes to generate
-%% TopMask is bitwised or'ed to the first byte
-%% BotMask is bitwised or'ed to the last byte
-%%
-rnd(0, _TMask, _BMask) ->
- [];
-rnd(1, TMask, BMask) ->
- [(rand8() bor TMask) bor BMask];
-rnd(N, TMask, BMask) ->
- [(rand8() bor TMask) | rnd_n(N-1, BMask)].
-
-rnd_n(1, BMask) ->
- [rand8() bor BMask];
-rnd_n(I, BMask) ->
- [rand8() | rnd_n(I-1, BMask)].
-
-rand8() ->
- (rand32() bsr 8) band 16#ff.
-
-rand32() ->
- random:uniform(16#100000000) -1.
+ crypto:strong_rand_bytes(N).
%%
%% Base 64 encode/decode
diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl
index 0ba11b0a26..2d82e6d77d 100644
--- a/lib/ssh/src/ssh_connection_handler.erl
+++ b/lib/ssh/src/ssh_connection_handler.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2008-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2011. 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
@@ -106,8 +106,6 @@ peer_address(ConnectionHandler) ->
%% initialize.
%%--------------------------------------------------------------------
init([Role, Manager, Socket, SshOpts]) ->
- {A,B,C} = erlang:now(),
- random:seed(A, B, C),
{NumVsn, StrVsn} = ssh_transport:versions(Role, SshOpts),
ssh_bits:install_messages(ssh_transport:transport_messages(NumVsn)),
{Protocol, Callback, CloseTag} =
diff --git a/lib/ssh/vsn.mk b/lib/ssh/vsn.mk
index 51f9f47446..8c9f671fd5 100644
--- a/lib/ssh/vsn.mk
+++ b/lib/ssh/vsn.mk
@@ -1,5 +1,5 @@
#-*-makefile-*- ; force emacs to enter makefile-mode
-SSH_VSN = 2.0.4
+SSH_VSN = 2.0.5
APP_VSN = "ssh-$(SSH_VSN)"
diff --git a/lib/ssl/doc/src/ssl.xml b/lib/ssl/doc/src/ssl.xml
index f0a4d5ea3e..60ea4d547f 100644
--- a/lib/ssl/doc/src/ssl.xml
+++ b/lib/ssl/doc/src/ssl.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>11999</year><year>2011</year>
+ <year>1999</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
diff --git a/lib/stdlib/doc/src/supervisor.xml b/lib/stdlib/doc/src/supervisor.xml
index 45fa0847a8..d6203bdaa0 100644
--- a/lib/stdlib/doc/src/supervisor.xml
+++ b/lib/stdlib/doc/src/supervisor.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1996</year><year>2010</year>
+ <year>1996</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -83,11 +83,17 @@
supervisor, where all child processes are dynamically added
instances of the same process type, i.e. running the same
code.</p>
- <p>The functions <c>terminate_child/2</c>, <c>delete_child/2</c>
+ <p>The functions <c>delete_child/2</c>
and <c>restart_child/2</c> are invalid for
<c>simple_one_for_one</c> supervisors and will return
<c>{error,simple_one_for_one}</c> if the specified supervisor
uses this restart strategy.</p>
+ <p>The function <c>terminate_child/2</c> can be used for
+ children under <c>simple_one_for_one</c> supervisors by
+ giving the child's <c>pid()</c> as the second argument. If
+ instead the child specification identifier is used,
+ <c>terminate_child/2</c> will return
+ <c>{error,simple_one_for_one}</c>.</p>
</item>
</list>
<p>To prevent a supervisor from getting into an infinite loop of
@@ -311,24 +317,33 @@ child_spec() = {Id,StartFunc,Restart,Shutdown,Type,Modules}
<type>
<v>SupRef = Name | {Name,Node} | {global,Name} | pid()</v>
<v>&nbsp;Name = Node = atom()</v>
- <v>Id = term()</v>
+ <v>Id = pid() | term()</v>
<v>Result = ok | {error,Error}</v>
<v>&nbsp;Error = not_found | simple_one_for_one</v>
</type>
<desc>
- <p>Tells the supervisor <c>SupRef</c> to terminate the child
- process corresponding to the child specification identified
- by <c>Id</c>. The process, if there is one, is terminated but
- the child specification is kept by the supervisor. This means
- that the child process may be later be restarted by
- the supervisor. The child process can also be restarted
- explicitly by calling <c>restart_child/2</c>. Use
- <c>delete_child/2</c> to remove the child specification.</p>
+ <p>Tells the supervisor <c>SupRef</c> to terminate the given
+ child.</p>
+ <p>If the supervisor is not <c>simple_one_for_one</c>,
+ <c>Id</c> must be the child specification identifier. The
+ process, if there is one, is terminated but the child
+ specification is kept by the supervisor. The child process
+ may later be restarted by the supervisor. The child process
+ can also be restarted explicitly by calling
+ <c>restart_child/2</c>. Use <c>delete_child/2</c> to remove
+ the child specification.</p>
+ <p>If the supervisor is <c>simple_one_for_one</c>, <c>Id</c>
+ must be the child process' <c>pid()</c>. I the specified
+ process is alive, but is not a child of the given
+ supervisor, the function will return
+ <c>{error,not_found}</c>. If the child specification
+ identifier is given instead instead of a <c>pid()</c>, the
+ function will return <c>{error,simple_one_for_one}</c>.</p>
+ <p>If successful, the function returns <c>ok</c>. If there is
+ no child specification with the specified <c>Id</c>, the
+ function returns <c>{error,not_found}</c>.</p>
<p>See <c>start_child/2</c> for a description of
<c>SupRef</c>.</p>
- <p>If successful, the function returns <c>ok</c>. If there is
- no child specification with the specified <c>Id</c>,
- the function returns <c>{error,not_found}</c>.</p>
</desc>
</func>
<func>
diff --git a/lib/stdlib/src/pool.erl b/lib/stdlib/src/pool.erl
index 7f5f23e26d..a3c9927ee9 100644
--- a/lib/stdlib/src/pool.erl
+++ b/lib/stdlib/src/pool.erl
@@ -95,6 +95,9 @@ pspawn_link(M, F, A) ->
start_nodes([], _, _) -> [];
start_nodes([Host|Tail], Name, Args) ->
case slave:start(Host, Name, Args) of
+ {error, {already_running, Node}} ->
+ io:format("Can't start node on host ~w due to ~w~n",[Host, {already_running, Node}]),
+ [Node | start_nodes(Tail, Name, Args)];
{error, R} ->
io:format("Can't start node on host ~w due to ~w~n",[Host, R]),
start_nodes(Tail, Name, Args);
diff --git a/lib/stdlib/src/supervisor.erl b/lib/stdlib/src/supervisor.erl
index 368dc2e3e5..4fd7f1d47c 100644
--- a/lib/stdlib/src/supervisor.erl
+++ b/lib/stdlib/src/supervisor.erl
@@ -138,7 +138,7 @@ delete_child(Supervisor, Name) ->
%%-----------------------------------------------------------------
-type term_err() :: 'not_found' | 'simple_one_for_one'.
--spec terminate_child(sup_ref(), term()) -> 'ok' | {'error', term_err()}.
+-spec terminate_child(sup_ref(), pid() | term()) -> 'ok' | {'error', term_err()}.
terminate_child(Supervisor, Name) ->
call(Supervisor, {terminate_child, Name}).
@@ -297,8 +297,26 @@ handle_call({start_child, EArgs}, _From, State) when ?is_simple(State) ->
{reply, What, State}
end;
-%%% The requests terminate_child, delete_child and restart_child are
-%%% invalid for simple_one_for_one supervisors.
+%% terminate_child for simple_one_for_one can only be done with pid
+handle_call({terminate_child, Name}, _From, State) when not is_pid(Name),
+ ?is_simple(State) ->
+ {reply, {error, simple_one_for_one}, State};
+
+handle_call({terminate_child, Name}, _From, State) ->
+ case get_child(Name, State, ?is_simple(State)) of
+ {value, Child} ->
+ case do_terminate(Child, State#state.name) of
+ #child{restart_type=RT} when RT=:=temporary; ?is_simple(State) ->
+ {reply, ok, state_del_child(Child, State)};
+ NChild ->
+ {reply, ok, replace_child(NChild, State)}
+ end;
+ false ->
+ {reply, {error, not_found}, State}
+ end;
+
+%%% The requests delete_child and restart_child are invalid for
+%%% simple_one_for_one supervisors.
handle_call({_Req, _Data}, _From, State) when ?is_simple(State) ->
{reply, {error, simple_one_for_one}, State};
@@ -341,19 +359,6 @@ handle_call({delete_child, Name}, _From, State) ->
{reply, {error, not_found}, State}
end;
-handle_call({terminate_child, Name}, _From, State) ->
- case get_child(Name, State) of
- {value, Child} ->
- case do_terminate(Child, State#state.name) of
- #child{restart_type = temporary} = NChild ->
- {reply, ok, state_del_child(NChild, State)};
- NChild ->
- {reply, ok, replace_child(NChild, State)}
- end;
- _ ->
- {reply, {error, not_found}, State}
- end;
-
handle_call(which_children, _From, #state{children = [#child{restart_type = temporary,
child_type = CT,
modules = Mods}]} =
@@ -849,7 +854,28 @@ split_child(_, [], After) ->
{lists:reverse(After), []}.
get_child(Name, State) ->
+ get_child(Name, State, false).
+get_child(Pid, State, AllowPid) when AllowPid, is_pid(Pid) ->
+ get_dynamic_child(Pid, State);
+get_child(Name, State, _) ->
lists:keysearch(Name, #child.name, State#state.children).
+
+get_dynamic_child(Pid, #state{children=[Child], dynamics=Dynamics}) ->
+ case is_dynamic_pid(Pid, dynamics_db(Child#child.restart_type, Dynamics)) of
+ true ->
+ {value, Child#child{pid=Pid}};
+ false ->
+ case erlang:is_process_alive(Pid) of
+ true -> false;
+ false -> {value, Child}
+ end
+ end.
+
+is_dynamic_pid(Pid, Dynamics) when is_list(Dynamics) ->
+ lists:member(Pid, Dynamics);
+is_dynamic_pid(Pid, Dynamics) ->
+ dict:is_key(Pid, Dynamics).
+
replace_child(Child, State) ->
Chs = do_replace_child(Child, State#state.children),
State#state{children = Chs}.
diff --git a/lib/stdlib/test/supervisor_SUITE.erl b/lib/stdlib/test/supervisor_SUITE.erl
index f9ceed8f84..cc271bd047 100644
--- a/lib/stdlib/test/supervisor_SUITE.erl
+++ b/lib/stdlib/test/supervisor_SUITE.erl
@@ -20,7 +20,7 @@
-module(supervisor_SUITE).
--include_lib("test_server/include/test_server.hrl").
+-include_lib("common_test/include/ct.hrl").
-define(TIMEOUT, 1000).
%% Testserver specific export
@@ -349,8 +349,7 @@ child_adm(Config) when is_list(Config) ->
ok = supervisor:terminate_child(sup_test, child1),
%% Start of already existing but not running process
- {error,already_present} =
- supervisor:start_child(sup_test, Child),
+ {error,already_present} = supervisor:start_child(sup_test, Child),
%% Restart
{ok, CPid2} = supervisor:restart_child(sup_test, child1),
@@ -377,6 +376,11 @@ child_adm(Config) when is_list(Config) ->
[{child1, CPid3, worker, []}] = supervisor:which_children(sup_test),
[1,1,0,1] = get_child_counts(sup_test),
+ %% Terminate with Pid not allowed when not simple_one_for_one
+ {error,not_found} = supervisor:terminate_child(sup_test, CPid3),
+ [{child1, CPid3, worker, []}] = supervisor:which_children(sup_test),
+ [1,1,0,1] = get_child_counts(sup_test),
+
{'EXIT',{noproc,{gen_server,call,[foo,which_children,infinity]}}}
= (catch supervisor:which_children(foo)),
{'EXIT',{noproc,{gen_server,call,[foo,count_children,infinity]}}}
@@ -412,16 +416,26 @@ child_adm_simple(Config) when is_list(Config) ->
[1,2,0,2] = get_child_counts(sup_test),
%% Termination
- {error, simple_one_for_one} =
- supervisor:terminate_child(sup_test, child1),
+ {error, simple_one_for_one} = supervisor:terminate_child(sup_test, child1),
+ [1,2,0,2] = get_child_counts(sup_test),
+ ok = supervisor:terminate_child(sup_test,CPid1),
+ [_] = supervisor:which_children(sup_test),
+ [1,1,0,1] = get_child_counts(sup_test),
+ false = erlang:is_process_alive(CPid1),
+ %% Terminate non-existing proccess is ok
+ ok = supervisor:terminate_child(sup_test,CPid1),
+ [_] = supervisor:which_children(sup_test),
+ [1,1,0,1] = get_child_counts(sup_test),
+ %% Terminate pid which is not a child of this supervisor is not ok
+ NoChildPid = spawn_link(fun() -> receive after infinity -> ok end end),
+ {error, not_found} = supervisor:terminate_child(sup_test, NoChildPid),
+ true = erlang:is_process_alive(NoChildPid),
%% Restart
- {error, simple_one_for_one} =
- supervisor:restart_child(sup_test, child1),
+ {error, simple_one_for_one} = supervisor:restart_child(sup_test, child1),
%% Deletion
- {error, simple_one_for_one} =
- supervisor:delete_child(sup_test, child1),
+ {error, simple_one_for_one} = supervisor:delete_child(sup_test, child1),
ok.
%%-------------------------------------------------------------------------
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 00:11:54 +0000