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channeld: simply exit if hsmd vanishes.

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We currently die when gossipd vanishes, but our direct connection will
go away.  We then complain if the node is shutting down while we're talking
to hsmd.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2022-01-29 14:03:05 +10:30
parent 1c71c9849b
commit 1abbc3d06a
4 changed files with 22 additions and 19 deletions
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1
channeld/Makefile
View File

@ -4,6 +4,7 @@ CHANNELD_HEADERS := \
channeld/full_channel_error_names_gen.h \
channeld/channeld_wiregen.h \
channeld/channeld_htlc.h \
channeld/channeld.h \
channeld/commit_tx.h \
channeld/full_channel.h \
channeld/full_channel_error.h \

15
channeld/channeld.c
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@ -15,6 +15,7 @@
#include <ccan/cast/cast.h>
#include <ccan/mem/mem.h>
#include <ccan/tal/str/str.h>
#include <channeld/channeld.h>
#include <channeld/channeld_wiregen.h>
#include <channeld/full_channel.h>
#include <channeld/watchtower.h>
@ -193,23 +194,17 @@ static void billboard_update(const struct peer *peer)
peer_billboard(false, update);
}
static const u8 *hsm_req(const tal_t *ctx, const u8 *req TAKES)
const u8 *hsm_req(const tal_t *ctx, const u8 *req TAKES)
{
u8 *msg;
int type = fromwire_peektype(req);
/* hsmd goes away at shutdown. That's OK. */
if (!wire_sync_write(HSM_FD, req))
status_failed(STATUS_FAIL_HSM_IO,
"Writing %s to HSM: %s",
hsmd_wire_name(type),
strerror(errno));
exit(0);
msg = wire_sync_read(ctx, HSM_FD);
if (!msg)
status_failed(STATUS_FAIL_HSM_IO,
"Reading resp to %s: %s",
hsmd_wire_name(type),
strerror(errno));
exit(0);
return msg;
}

10
channeld/channeld.h Normal file
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@ -0,0 +1,10 @@
#ifndef LIGHTNING_CHANNELD_CHANNELD_H
#define LIGHTNING_CHANNELD_CHANNELD_H
#include "config.h"
#include <ccan/short_types/short_types.h>
#include <ccan/take/take.h>
#include <ccan/tal/tal.h>
const u8 *hsm_req(const tal_t *ctx, const u8 *req TAKES);
#endif /* LIGHTNING_CHANNELD_CHANNELD_H */

15
channeld/watchtower.c
View File

@ -1,6 +1,7 @@
#include "config.h"
#include <bitcoin/feerate.h>
#include <bitcoin/script.h>
#include <channeld/channeld.h>
#include <channeld/watchtower.h>
#include <common/features.h>
#include <common/htlc_tx.h>
@ -26,7 +27,7 @@ penalty_tx_create(const tal_t *ctx,
struct bitcoin_tx *tx;
struct keyset keyset;
size_t weight;
u8 *msg;
const u8 *msg;
struct amount_sat fee, min_out, amt;
struct bitcoin_signature sig;
u32 locktime = 0;
@ -105,16 +106,12 @@ penalty_tx_create(const tal_t *ctx,
bitcoin_tx_finalize(tx);
u8 *hsm_sign_msg =
towire_hsmd_sign_penalty_to_us(ctx, &remote_per_commitment_secret,
towire_hsmd_sign_penalty_to_us(tmpctx, &remote_per_commitment_secret,
tx, wscript);
if (!wire_sync_write(hsm_fd, take(hsm_sign_msg)))
status_failed(STATUS_FAIL_INTERNAL_ERROR,
"Writing sign request to hsm");
msg = wire_sync_read(tmpctx, hsm_fd);
if (!msg || !fromwire_hsmd_sign_tx_reply(msg, &sig))
status_failed(STATUS_FAIL_INTERNAL_ERROR,
msg = hsm_req(tmpctx, hsm_sign_msg);
if (!fromwire_hsmd_sign_tx_reply(msg, &sig))
status_failed(STATUS_FAIL_HSM_IO,
"Reading sign_tx_reply: %s", tal_hex(tmpctx, msg));
witness = bitcoin_witness_sig_and_element(tx, &sig, &ONE, sizeof(ONE),