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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);
1.1.2.2 misho 150: goto end;
151: }
1.1.2.3 misho 152: if (flg && req.gp_value)
153: schedResumeby(TASK_ROOT(task), CRITERIA_ID, (void*) 1);
1.1.2.2 misho 154: end:
155: schedTimer(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task),
156: ts, TASK_DATA(task), TASK_DATLEN(task));
157: taskExit(task, NULL);
158: }
159:
1.1.2.1 misho 160:
161: int
162: main(int argc, char **argv)
163: {
164: char ch;
1.1.2.4 ! misho 165: pid_t pid;
1.1.2.2 misho 166: struct timespec ts = { 1, 0 };
1.1.2.1 misho 167:
1.1.2.3 misho 168: while ((ch = getopt(argc, argv, "hc:d:")) != -1)
1.1.2.1 misho 169: switch (ch) {
1.1.2.2 misho 170: case 'd':
171: strlcpy(szDevName, optarg, sizeof szDevName);
172: break;
1.1.2.1 misho 173: case 'c':
174: strlcpy(szCfgName, optarg, sizeof szCfgName);
175: break;
176: case 'h':
177: default:
178: Usage();
179: return 1;
180: }
181: argc -= optind;
182: argv += optind;
183:
1.1.2.4 ! misho 184: switch ((pid = fork())) {
! 185: case -1:
! 186: printf("Error:: failed fork() #%d - %s\n", errno, strerror(errno));
! 187: return 1;
! 188: case 0:
! 189: setsid();
! 190: chdir("/");
! 191:
! 192: gpio = open(_PATH_DEVNULL, O_RDWR);
! 193: if (gpio > 2) {
! 194: dup2(gpio, STDIN_FILENO);
! 195: dup2(gpio, STDOUT_FILENO);
! 196: dup2(gpio, STDERR_FILENO);
! 197: close(gpio);
! 198: }
! 199: break;
! 200: default:
! 201: return 0;
! 202: }
! 203:
1.1.2.1 misho 204: openlog("butz", LOG_PID | LOG_CONS, LOG_DAEMON);
1.1.2.2 misho 205: gpio = open(szDevName, O_RDONLY);
206: if (gpio == -1) {
1.1.2.4 ! misho 207: ESYSERR(0);
1.1.2.2 misho 208: return 1;
209: }
210: if (ioctl(gpio, GPIOMAXPIN, &maxpins) == -1) {
1.1.2.4 ! misho 211: ESYSERR(0);
1.1.2.2 misho 212: return 1;
213: }
214:
1.1.2.1 misho 215: if (cfgLoadConfig(szCfgName, &cfg)) {
216: ELIBERR(cfg);
1.1.2.2 misho 217: close(gpio);
1.1.2.1 misho 218: return 1;
219: }
1.1.2.3 misho 220: if (prepareGPIO()) {
221: close(gpio);
222: return 1;
223: }
1.1.2.1 misho 224: root = schedBegin();
225: if (!root) {
226: ELIBERR(sched);
1.1.2.2 misho 227: close(gpio);
1.1.2.1 misho 228: return 1;
229: }
230:
231: schedSignal(root, sigHandler, NULL, SIGHUP, NULL, 0);
232: schedSignal(root, sigHandler, NULL, SIGTERM, NULL, 0);
1.1.2.4 ! misho 233: schedTimer(root, butReset, NULL, ts, NULL, 0);
1.1.2.1 misho 234:
1.1.2.2 misho 235: schedRun(root, &Kill);
1.1.2.1 misho 236: schedEnd(&root);
237: cfgUnloadConfig(&cfg);
1.1.2.2 misho 238: close(gpio);
1.1.2.1 misho 239: closelog();
240: return 0;
241: }