1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <stddef.h>
#include <assert.h>
#include <ltdl.h>
#include <memblock.h>
#include "core.h"
#include "mainloop.h"
#include "module.h"
#include "mainloop-signal.h"
#include "cmdline.h"
#include "cli-command.h"
#include "util.h"
#include "sioman.h"
static struct pa_mainloop *mainloop;
static void exit_signal_callback(void *id, int sig, void *userdata) {
struct pa_mainloop_api* m = pa_mainloop_get_api(mainloop);
m->quit(m, 1);
fprintf(stderr, __FILE__": got signal.\n");
}
static void aux_signal_callback(void *id, int sig, void *userdata) {
struct pa_core *c = userdata;
assert(c);
pa_module_load(c, sig == SIGUSR1 ? "module-cli" : "module-cli-protocol-unix", NULL);
}
static void close_pipe(int p[2]) {
if (p[0] != -1)
close(p[0]);
if (p[1] != -1)
close(p[1]);
p[0] = p[1] = -1;
}
int main(int argc, char *argv[]) {
struct pa_core *c;
struct pa_cmdline *cmdline = NULL;
struct pa_strbuf *buf = NULL;
char *s;
int r, retval = 1;
int daemon_pipe[2] = { -1, -1 };
if (!(cmdline = pa_cmdline_parse(argc, argv))) {
fprintf(stderr, __FILE__": failed to parse command line.\n");
goto finish;
}
if (cmdline->help) {
pa_cmdline_help(argv[0]);
retval = 0;
goto finish;
}
if (cmdline->daemonize) {
pid_t child;
if (pa_stdio_acquire() < 0) {
fprintf(stderr, __FILE__": failed to acquire stdio.\n");
goto finish;
}
if (pipe(daemon_pipe) < 0) {
fprintf(stderr, __FILE__": failed to create pipe.\n");
goto finish;
}
if ((child = fork()) < 0) {
fprintf(stderr, __FILE__": fork() failed: %s\n", strerror(errno));
goto finish;
}
if (child != 0) {
/* Father */
close(daemon_pipe[1]);
daemon_pipe[1] = -1;
if (pa_loop_read(daemon_pipe[0], &retval, sizeof(retval)) != sizeof(retval)) {
fprintf(stderr, __FILE__": read() failed: %s\n", strerror(errno));
retval = 1;
}
goto finish;
}
close(daemon_pipe[0]);
daemon_pipe[0] = -1;
setsid();
setpgrp();
}
r = lt_dlinit();
assert(r == 0);
mainloop = pa_mainloop_new();
assert(mainloop);
r = pa_signal_init(pa_mainloop_get_api(mainloop));
assert(r == 0);
pa_signal_register(SIGINT, exit_signal_callback, NULL);
signal(SIGPIPE, SIG_IGN);
c = pa_core_new(pa_mainloop_get_api(mainloop));
assert(c);
pa_signal_register(SIGUSR1, aux_signal_callback, c);
pa_signal_register(SIGUSR2, aux_signal_callback, c);
buf = pa_strbuf_new();
assert(buf);
r = pa_cli_command_execute(c, cmdline->cli_commands, buf, &cmdline->fail, &cmdline->verbose);
fprintf(stderr, s = pa_strbuf_tostring_free(buf));
free(s);
if (r < 0 && cmdline->fail) {
fprintf(stderr, __FILE__": failed to initialize daemon.\n");
if (cmdline->daemonize)
pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
} else if (!c->modules || pa_idxset_ncontents(c->modules) == 0) {
fprintf(stderr, __FILE__": daemon startup without any loaded modules, refusing to work.\n");
if (cmdline->daemonize)
pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
} else {
retval = 0;
if (cmdline->daemonize)
pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
fprintf(stderr, __FILE__": mainloop entry.\n");
if (pa_mainloop_run(mainloop, &retval) < 0)
retval = 1;
fprintf(stderr, __FILE__": mainloop exit.\n");
}
pa_core_free(c);
pa_signal_done();
pa_mainloop_free(mainloop);
lt_dlexit();
finish:
if (cmdline)
pa_cmdline_free(cmdline);
close_pipe(daemon_pipe);
return retval;
}
|
