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libipc: better error detection at message send.

dev
Karchnu 2020-11-08 01:19:02 +01:00
parent a99d5317b0
commit d32e26b848
2 changed files with 9 additions and 8 deletions
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6
src/communication.c
View File

@ -490,12 +490,12 @@ struct ipc_error handle_new_message (struct ipc_event *event, struct ipc_ctx *ct
IPC_EVENT_SET (event, IPC_EVENT_TYPE_DISCONNECTION, index, ctx->pollfd[index].fd, NULL);
TEST_IPC_P (ipc_close (ctx, index), "cannot close a connection on closed recipient in handle_message");
TEST_IPC_P (ipc_del (ctx, index), "cannot delete a connection on closed recipient in handle_message");
ipc_message_empty (m);
free (m);
TEST_IPC_P (ipc_close (ctx, index), "cannot close a connection on closed recipient in handle_message");
TEST_IPC_P (ipc_del (ctx, index), "cannot delete a connection on closed recipient in handle_message");
// warning: do not forget to free the ipc_client structure
IPC_RETURN_NO_ERROR;
}

11
src/usocket.c
View File

@ -24,7 +24,7 @@ struct ipc_error usock_send (const int32_t fd, const char *buf, size_t len, size
{
ssize_t ret = 0;
ret = send (fd, buf, len, MSG_NOSIGNAL);
if (ret <= 0)
if (ret == -1)
{
// TODO: Check for errno.
// Some choice could be made.
@ -37,10 +37,9 @@ struct ipc_error usock_send (const int32_t fd, const char *buf, size_t len, size
// POSIX.1-2001 allows either error to be returned for this case, and does not
// require these constants to have the same value, so a portable application
// should check for both possibilities.
case (EWOULDBLOCK) :
ERROR_CASE (EAGAIN, "usock_send", "socket marked as nonblocking, but requested operation would block");
ERROR_CASE (EWOULDBLOCK, "usock_send", "socket marked as nonblocking, but requested operation would block");
ERROR_CASE (EAGAIN, "usock_send", "socket not previously bound to an address and all ports are in use");
// ERROR_CASE (EAGAIN, "usock_send", "socket not previously bound to an address and all ports are in use");
ERROR_CASE (EALREADY, "usock_send", "another Fast Open is in progress");
@ -81,10 +80,12 @@ struct ipc_error usock_send (const int32_t fd, const char *buf, size_t len, size
// In this case, the process will also receive a SIGPIPE unless MSG_NOSIGNAL is set.
ERROR_CASE (EPIPE, "usock_send", "the local end has been shut down on a connection oriented socket");
default:
fprintf (stderr, "usock_send: unrecognized error after send(2), num: %d\n", errno);
}
}
T_R ((ret <= 0), IPC_ERROR_USOCK_SEND);
T_R ((ret == -1), IPC_ERROR_USOCK_SEND);
*sent = ret;
IPC_RETURN_NO_ERROR;
}