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Actually show something (even if it not that helpful) if the server

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fails to start (for example if it can't create the socket), rather than
hanging or showing nothing.
This commit is contained in:
nicm 2015-11-24 22:45:44 +00:00
parent c18fbefe93
commit 73e30cbda8
1 changed files with 18 additions and 9 deletions
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27
client.c
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@ -76,8 +76,12 @@ client_get_lock(char *lockfile)
{
int lockfd;
if ((lockfd = open(lockfile, O_WRONLY|O_CREAT, 0600)) == -1)
fatal("open failed");
if ((lockfd = open(lockfile, O_WRONLY|O_CREAT, 0600)) == -1) {
lockfd = open("/dev/null", O_WRONLY);
if (lockfd == -1)
fatal("open failed");
return (lockfd);
}
log_debug("lock file is %s", lockfile);
if (flock(lockfd, LOCK_EX|LOCK_NB) == -1) {
@ -114,10 +118,10 @@ client_connect(struct event_base *base, const char *path, int start_server)
retry:
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
fatal("socket failed");
return (-1);
log_debug("trying connect");
if (connect(fd, (struct sockaddr *) &sa, sizeof(sa)) == -1) {
if (connect(fd, (struct sockaddr *)&sa, sizeof sa) == -1) {
log_debug("connect failed: %s", strerror(errno));
if (errno != ECONNREFUSED && errno != ENOENT)
goto failed;
@ -255,6 +259,9 @@ client_main(struct event_base *base, int argc, char **argv, int flags)
cmd_list_free(cmdlist);
}
/* Create client process structure (starts logging). */
client_proc = proc_start("client", base, 0, client_signal);
/* Initialize the client socket and start the server. */
fd = client_connect(base, socket_path, cmdflags & CMD_STARTSERVER);
if (fd == -1) {
@ -267,9 +274,6 @@ client_main(struct event_base *base, int argc, char **argv, int flags)
}
return (1);
}
/* Build process state. */
client_proc = proc_start("client", base, 0, client_signal);
client_peer = proc_add_peer(client_proc, fd, client_dispatch, NULL);
/* Save these before pledge(). */
@ -365,7 +369,8 @@ client_main(struct event_base *base, int argc, char **argv, int flags)
printf("%%exit\n");
printf("\033\\");
tcsetattr(STDOUT_FILENO, TCSAFLUSH, &saved_tio);
}
} else
fprintf(stderr, "%s\n", client_exit_message());
setblocking(STDIN_FILENO, 1);
return (client_exitval);
}
@ -517,7 +522,11 @@ client_dispatch(struct imsg *imsg, __unused void *arg)
if (imsg == NULL) {
client_exitreason = CLIENT_EXIT_LOST_SERVER;
client_exitval = 1;
} else if (client_attached)
proc_exit(client_proc);
return;
}
if (client_attached)
client_dispatch_attached(imsg);
else
client_dispatch_wait(imsg);