exec and fade cleanups.
[paraslash.git] / client.c
1 /*
2 * Copyright (C) 1997-2008 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file client.c the client program used to connect to para_server */
8
9 #include "para.h"
10 #include "list.h"
11 #include "sched.h"
12 #include "client.cmdline.h"
13 #include "string.h"
14 #include "stdin.h"
15 #include "stdout.h"
16 #include "client.h"
17 #include "error.h"
18
19 INIT_CLIENT_ERRLISTS;
20
21 static struct client_task *ct;
22 static struct stdin_task sit;
23 static struct stdout_task sot;
24
25 static void supervisor_post_select(__a_unused struct sched *s, struct task *t)
26 {
27 if (ct->task.error < 0) {
28 t->error = ct->task.error;
29 return;
30 }
31 if (ct->status == CL_SENDING) {
32 stdin_set_defaults(&sit);
33 sit.buf = para_malloc(sit.bufsize),
34 register_task(&sit.task);
35 ct->inbuf = sit.buf;
36 ct->in_loaded = &sit.loaded;
37 ct->in_error = &sit.task.error;
38 t->error = -E_TASK_STARTED;
39 return;
40 }
41 if (ct->status == CL_RECEIVING) {
42 stdout_set_defaults(&sot);
43 sot.buf = ct->buf;
44 sot.loaded = &ct->loaded;
45 sot.input_error = &ct->task.error;
46 register_task(&sot.task);
47 t->error = -E_TASK_STARTED;
48 return;
49 }
50 }
51
52 static struct task svt = {
53 .post_select = supervisor_post_select,
54 .status = "supervisor task"
55 };
56
57 INIT_STDERR_LOGGING(ct->conf.loglevel_arg);
58
59
60 /**
61 * The client program to connect to para_server.
62 *
63 * \param argc Usual argument count.
64 * \param argv Usual argument vector.
65 *
66 * It registers two tasks: The client task that communicates with para_server
67 * and the standard out task that writes any output produced by the client task
68 * to standard out.
69 *
70 * \return EXIT_SUCCESS or EXIT_FAILURE
71 *
72 * \sa client_open(), stdout.c, stdout.h, para_client(1), para_server(1)
73 */
74 int main(int argc, char *argv[])
75 {
76
77 int ret;
78 struct sched s;
79
80 s.default_timeout.tv_sec = 1;
81 s.default_timeout.tv_usec = 0;
82 ret = client_open(argc, argv, &ct);
83 if (ret < 0) /* can not use PARA_LOG here */
84 exit(EXIT_FAILURE);
85 register_task(&svt);
86 ret = schedule(&s);
87 if (ret < 0)
88 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
89 client_close(ct);
90 return ret >= 0? EXIT_SUCCESS: EXIT_FAILURE;
91 }