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1.1.2.1 misho 1: #include "global.h"
2:
3:
4: cfg_root_t cfg;
5: sched_root_task_t *root;
1.1.2.3 misho 6: int Kill, gpio, maxpins, defact, resbut, led = -1;
1.1.2.1 misho 7: extern char compiled[], compiledby[], compilehost[];
8: char szCfgName[PATH_MAX] = BUTZ_CFG;
1.1.2.2 misho 9: char szDevName[PATH_MAX] = _PATH_DEVGPIOC"0";
1.1.2.1 misho 10:
11: static void
12: Usage()
13: {
14: printf( " -= Butz =- Service for board buttons management\n"
15: "=== %s === %s@%s ===\n\n"
16: " Syntax: butz [options] [set_value]\n"
17: "\n"
18: "\t-c <cfgfile>\tConfig file [default: /etc/butz.conf]\n"
1.1.2.2 misho 19: "\t-d <devname>\tGPIO control device [default: /dev/gpioc]\n"
1.1.2.1 misho 20: "\n", compiled, compiledby, compilehost);
21: }
22:
1.1.2.3 misho 23: static int
24: prepareGPIO()
25: {
26: const char *str;
27: struct gpio_pin pin;
28: struct gpio_req req;
29:
30: str = cfg_getAttribute(&cfg, "reset", "default_after");
31: if (str)
32: defact = strtol(str, NULL, 0);
33: str = cfg_getAttribute(&cfg, "reset", "gpio_led_ping");
34: if (str)
35: led = strtol(str, NULL, 0);
36: str = cfg_getAttribute(&cfg, "reset", "gpio_pin");
37: if (!str || maxpins < (resbut = strtol(str, NULL, 0))) {
38: EERROR(EINVAL, "Reset button pin not defined or wrong number!");
39: return -1;
40: }
41:
42: /* switch button pin into input state */
43: pin.gp_pin = resbut;
44: pin.gp_flags = GPIO_PIN_INPUT;
45: if (ioctl(gpio, GPIOSETCONFIG, &pin) == -1)
46: return -1;
47: /* toggle led pin */
48: if (led != -1) {
49: req.gp_pin = led;
50: if (ioctl(gpio, GPIOTOGGLE, &req) == -1) {
51: ESYSERR(0);
52: return -1;
53: }
54: }
55:
56: return 0;
57: }
58:
1.1.2.1 misho 59: static void *
60: sigHandler(sched_task_t *task)
61: {
62: switch (TASK_VAL(task)) {
63: case SIGHUP:
64: cfgUnloadConfig(&cfg);
65: if (cfgLoadConfig(szCfgName, &cfg)) {
66: ELIBERR(cfg);
67: Kill++;
68: }
1.1.2.3 misho 69: if (prepareGPIO())
70: Kill++;
1.1.2.1 misho 71: break;
72: case SIGTERM:
73: Kill++;
74: break;
75: default:
76: EERROR(EINVAL, "Undefined signal %lu!", TASK_VAL(task));
77: break;
78: }
79: taskExit(task, NULL);
80: }
81:
1.1.2.2 misho 82: static void *
1.1.2.3 misho 83: execReset(sched_task_t *task)
84: {
85: pid_t pid;
86: const char *str;
87:
88: str = cfg_getAttribute(&cfg, "reset", "click");
89: if (!str)
90: taskExit(task, NULL);
91:
92: if ((pid = fork()) == -1)
93: ESYSERR(0);
94: else if (!pid) {
95: execl(str, str, "click", NULL);
96: ESYSERR(0);
97: _exit(127);
98: }
99:
100: taskExit(task, NULL);
101: }
102:
103: static void *
104: execDefault(sched_task_t *task)
105: {
106: pid_t pid;
107: const char *str;
108:
109: str = cfg_getAttribute(&cfg, "reset", "default");
110: if (!str)
111: taskExit(task, NULL);
112:
113: if ((pid = fork()) == -1)
114: ESYSERR(0);
115: else if (!pid) {
116: execl(str, str, "default", NULL);
117: ESYSERR(0);
118: _exit(127);
119: }
120:
121: taskExit(task, NULL);
122: }
123:
124: static void *
1.1.2.2 misho 125: butReset(sched_task_t *task)
126: {
127: struct timespec ts = { 1, 0 };
128: struct gpio_req req;
1.1.2.3 misho 129: static int flg = 0;
1.1.2.2 misho 130:
1.1.2.3 misho 131: /* toggle led pin */
132: if (led != -1) {
133: req.gp_pin = led;
134: if (ioctl(gpio, GPIOTOGGLE, &req) == -1)
135: ESYSERR(0);
136: }
137: /* check reset button */
138: req.gp_pin = resbut;
139: if (ioctl(gpio, GPIOGET, &req) == -1) {
140: ESYSERR(0);
1.1.2.2 misho 141: goto end;
142: }
1.1.2.3 misho 143: /* switch on */
144: if (!req.gp_value)
145: if (++flg == 1)
146: schedSuspend(TASK_ROOT(task), execReset, NULL, flg, NULL, 0);
147: if (defact && flg >= defact) {
148: schedCancelby(TASK_ROOT(task), taskSUSPEND, CRITERIA_CALL, execReset, NULL);
149: schedEvent(TASK_ROOT(task), execDefault, NULL, flg, NULL, 0);
1.1.2.5 ! misho 150: flg ^= flg;
1.1.2.2 misho 151: goto end;
152: }
1.1.2.3 misho 153: if (flg && req.gp_value)
154: schedResumeby(TASK_ROOT(task), CRITERIA_ID, (void*) 1);
1.1.2.2 misho 155: end:
156: schedTimer(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task),
157: ts, TASK_DATA(task), TASK_DATLEN(task));
158: taskExit(task, NULL);
159: }
160:
1.1.2.1 misho 161:
162: int
163: main(int argc, char **argv)
164: {
165: char ch;
1.1.2.4 misho 166: pid_t pid;
1.1.2.2 misho 167: struct timespec ts = { 1, 0 };
1.1.2.1 misho 168:
1.1.2.3 misho 169: while ((ch = getopt(argc, argv, "hc:d:")) != -1)
1.1.2.1 misho 170: switch (ch) {
1.1.2.2 misho 171: case 'd':
172: strlcpy(szDevName, optarg, sizeof szDevName);
173: break;
1.1.2.1 misho 174: case 'c':
175: strlcpy(szCfgName, optarg, sizeof szCfgName);
176: break;
177: case 'h':
178: default:
179: Usage();
180: return 1;
181: }
182: argc -= optind;
183: argv += optind;
184:
1.1.2.4 misho 185: switch ((pid = fork())) {
186: case -1:
187: printf("Error:: failed fork() #%d - %s\n", errno, strerror(errno));
188: return 1;
189: case 0:
190: setsid();
191: chdir("/");
192:
193: gpio = open(_PATH_DEVNULL, O_RDWR);
194: if (gpio > 2) {
195: dup2(gpio, STDIN_FILENO);
196: dup2(gpio, STDOUT_FILENO);
197: dup2(gpio, STDERR_FILENO);
198: close(gpio);
199: }
200: break;
201: default:
202: return 0;
203: }
204:
1.1.2.1 misho 205: openlog("butz", LOG_PID | LOG_CONS, LOG_DAEMON);
1.1.2.2 misho 206: gpio = open(szDevName, O_RDONLY);
207: if (gpio == -1) {
1.1.2.4 misho 208: ESYSERR(0);
1.1.2.2 misho 209: return 1;
210: }
211: if (ioctl(gpio, GPIOMAXPIN, &maxpins) == -1) {
1.1.2.4 misho 212: ESYSERR(0);
1.1.2.2 misho 213: return 1;
214: }
215:
1.1.2.1 misho 216: if (cfgLoadConfig(szCfgName, &cfg)) {
217: ELIBERR(cfg);
1.1.2.2 misho 218: close(gpio);
1.1.2.1 misho 219: return 1;
220: }
1.1.2.3 misho 221: if (prepareGPIO()) {
222: close(gpio);
223: return 1;
224: }
1.1.2.1 misho 225: root = schedBegin();
226: if (!root) {
227: ELIBERR(sched);
1.1.2.2 misho 228: close(gpio);
1.1.2.1 misho 229: return 1;
230: }
231:
232: schedSignal(root, sigHandler, NULL, SIGHUP, NULL, 0);
233: schedSignal(root, sigHandler, NULL, SIGTERM, NULL, 0);
1.1.2.4 misho 234: schedTimer(root, butReset, NULL, ts, NULL, 0);
1.1.2.1 misho 235:
1.1.2.2 misho 236: schedRun(root, &Kill);
1.1.2.1 misho 237: schedEnd(&root);
238: cfgUnloadConfig(&cfg);
1.1.2.2 misho 239: close(gpio);
1.1.2.1 misho 240: closelog();
241: return 0;
242: }