1 /* start.c - Start/stop system services.
2 *
3 * Copyright 2016 The Android Open Source Project
4
5 USE_START(NEWTOY(start, "", TOYFLAG_USR|TOYFLAG_SBIN))
6 USE_STOP(NEWTOY(stop, "", TOYFLAG_USR|TOYFLAG_SBIN))
7
8 config START
9 bool "start"
10 depends on TOYBOX_ON_ANDROID
11 default y
12 help
13 usage: start [SERVICE...]
14
15 Starts the given system service, or netd/surfaceflinger/zygotes.
16
17 config STOP
18 bool "stop"
19 depends on TOYBOX_ON_ANDROID
20 default y
21 help
22 usage: stop [SERVICE...]
23
24 Stop the given system service, or netd/surfaceflinger/zygotes.
25 */
26
27 #define FOR_start
28 #include "toys.h"
29
30 #include <sys/system_properties.h>
31
start_stop(int start)32 static void start_stop(int start)
33 {
34 char *property = start ? "ctl.start" : "ctl.stop";
35 // null terminated in both directions
36 char *services[] = {0,"netd","surfaceflinger","zygote","zygote_secondary",0},
37 **ss = toys.optargs;
38 int direction = 1;
39
40 if (getuid()) error_exit("must be root");
41
42 if (!*ss) {
43 // If we don't have optargs, iterate through services forward/backward.
44 ss = services+1;
45 if (!start) ss = services+ARRAY_LEN(services)-2, direction = -1;
46 }
47
48 for (; *ss; ss += direction)
49 if (__system_property_set(property, *ss))
50 error_exit("failed to set property '%s' to '%s'", property, *ss);
51 }
52
start_main(void)53 void start_main(void)
54 {
55 start_stop(1);
56 }
57
stop_main(void)58 void stop_main(void)
59 {
60 start_stop(0);
61 }
62