Merge pull request #2366 from 2xsec/bugfix

change defines for return value of handlers

src/lxc/cmd/lxc_monitord.c

@@ -161,7 +161,7 @@ static int lxc_monitord_sock_handler(int fd, uint32_t events, void *data,
 
 		rc = read(fd, buf, sizeof(buf));
 		if (rc > 0 && !strncmp(buf, "quit", 4))
-			quit = 1;
+			quit = LXC_MAINLOOP_CLOSE;
 	}
 
 	if (events & EPOLLHUP)
@@ -177,7 +177,7 @@ static int lxc_monitord_sock_accept(int fd, uint32_t events, void *data,
 	struct ucred cred;
 	socklen_t credsz = sizeof(cred);
 
-	ret = -1;
+	ret = LXC_MAINLOOP_ERROR;
 	clientfd = accept(fd, NULL, 0);
 	if (clientfd < 0) {
 		SYSERROR("Failed to accept connection for client file descriptor %d.", fd);
@@ -301,7 +301,7 @@ static int lxc_monitord_fifo_handler(int fd, uint32_t events, void *data,
 	ret = read(fd, &msglxc, sizeof(msglxc));
 	if (ret != sizeof(msglxc)) {
 		SYSERROR("Reading from fifo failed: %s.", strerror(errno));
-		return 1;
+		return LXC_MAINLOOP_CLOSE;
 	}
 
 	for (i = 0; i < mon->clientfds_cnt; i++) {
@@ -311,7 +311,7 @@ static int lxc_monitord_fifo_handler(int fd, uint32_t events, void *data,
 			      mon->clientfds[i], strerror(errno));
 	}
 
-	return 0;
+	return LXC_MAINLOOP_CONTINUE;
 }
 
 static int lxc_monitord_mainloop_add(struct lxc_monitor *mon)

src/lxc/commands.c

@@ -1167,7 +1167,7 @@ static int lxc_cmd_handler(int fd, uint32_t events, void *data,
 		if (ret != req.datalen) {
 			WARN("Failed to receive full command request. Ignoring "
 			     "request for \"%s\"", lxc_cmd_str(req.cmd));
-			ret = -1;
+			ret = LXC_MAINLOOP_ERROR;
 			goto out_close;
 		}
 
@@ -1177,7 +1177,7 @@ static int lxc_cmd_handler(int fd, uint32_t events, void *data,
 	ret = lxc_cmd_process(fd, &req, handler);
 	if (ret) {
 		/* This is not an error, but only a request to close fd. */
-		ret = 0;
+		ret = LXC_MAINLOOP_CONTINUE;
 		goto out_close;
 	}
 
@@ -1201,7 +1201,7 @@ static int lxc_cmd_accept(int fd, uint32_t events, void *data,
 	connection = accept(fd, NULL, 0);
 	if (connection < 0) {
 		SYSERROR("Failed to accept connection to run command.");
-		return -1;
+		return LXC_MAINLOOP_ERROR;
 	}
 
 	ret = fcntl(connection, F_SETFD, FD_CLOEXEC);

src/lxc/start.c

@@ -343,7 +343,7 @@ static int signal_handler(int fd, uint32_t events, void *data,
 	ret = read(fd, &siginfo, sizeof(siginfo));
 	if (ret < 0) {
 		ERROR("Failed to read signal info from signal file descriptor %d", fd);
-		return -1;
+		return LXC_MAINLOOP_ERROR;
 	}
 
 	if (ret != sizeof(siginfo)) {
@@ -374,7 +374,7 @@ static int signal_handler(int fd, uint32_t events, void *data,
 			hdlr->exit_status = 1;
 			break;
 		default:
-			ERROR("Unknown si_code: %d", hdlr->init_died);
+			ERROR("Unknown si_code: %d", info.si_code);
 			hdlr->exit_status = 1;
 		}
 	}
@@ -382,13 +382,13 @@ static int signal_handler(int fd, uint32_t events, void *data,
 	if (siginfo.ssi_signo == SIGHUP) {
 		kill(hdlr->pid, SIGTERM);
 		INFO("Killing %d since terminal hung up", hdlr->pid);
-		return hdlr->init_died ? LXC_MAINLOOP_CLOSE : 0;
+		return hdlr->init_died ? LXC_MAINLOOP_CLOSE : LXC_MAINLOOP_CONTINUE;
 	}
 
 	if (siginfo.ssi_signo != SIGCHLD) {
 		kill(hdlr->pid, siginfo.ssi_signo);
 		INFO("Forwarded signal %d to pid %d", siginfo.ssi_signo, hdlr->pid);
-		return hdlr->init_died ? LXC_MAINLOOP_CLOSE : 0;
+		return hdlr->init_died ? LXC_MAINLOOP_CLOSE : LXC_MAINLOOP_CONTINUE;
 	}
 
 	/* More robustness, protect ourself from a SIGCHLD sent
@@ -397,15 +397,15 @@ static int signal_handler(int fd, uint32_t events, void *data,
 	if (siginfo.ssi_pid != hdlr->pid) {
 		NOTICE("Received %d from pid %d instead of container init %d",
 		       siginfo.ssi_signo, siginfo.ssi_pid, hdlr->pid);
-		return hdlr->init_died ? LXC_MAINLOOP_CLOSE : 0;
+		return hdlr->init_died ? LXC_MAINLOOP_CLOSE : LXC_MAINLOOP_CONTINUE;
 	}
 
 	if (siginfo.ssi_code == CLD_STOPPED) {
 		INFO("Container init process was stopped");
-		return hdlr->init_died ? LXC_MAINLOOP_CLOSE : 0;
+		return hdlr->init_died ? LXC_MAINLOOP_CLOSE : LXC_MAINLOOP_CONTINUE;
 	} else if (siginfo.ssi_code == CLD_CONTINUED) {
 		INFO("Container init process was continued");
-		return hdlr->init_died ? LXC_MAINLOOP_CLOSE : 0;
+		return hdlr->init_died ? LXC_MAINLOOP_CLOSE : LXC_MAINLOOP_CONTINUE;
 	}
 
 	DEBUG("Container init process %d exited", hdlr->pid);
@@ -1901,6 +1901,11 @@ int __lxc_start(const char *name, struct lxc_handler *handler,
 		goto out_abort;
 	}
 
+	if (!handler->init_died && handler->pid > 0) {
+		ERROR("Child process is not killed");
+		goto out_abort;
+	}
+
 	status = lxc_wait_for_pid_status(handler->pid);
 	if (status < 0)
 		SYSERROR("Failed to retrieve status for %d", handler->pid);

src/lxc/tools/lxc_top.c

@@ -671,7 +671,7 @@ static int stdin_handler(int fd, uint32_t events, void *data,
 
 	if (events & EPOLLHUP)
 		*in_char = 'q';
-	return 1;
+	return LXC_MAINLOOP_CLOSE;
 }
 
 int main(int argc, char *argv[])