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 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 53 void start_main(void) 54 { 55 start_stop(1); 56 } 57 58 void stop_main(void) 59 { 60 start_stop(0); 61 } 62
