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58#include "libbb.h"
59#include <syslog.h>
60#include <linux/input.h>
61
62#ifndef EV_SW
63# define EV_SW 0x05
64#endif
65#ifndef EV_KEY
66# define EV_KEY 0x01
67#endif
68#ifndef SW_LID
69# define SW_LID 0x00
70#endif
71#ifndef SW_RFKILL_ALL
72# define SW_RFKILL_ALL 0x03
73#endif
74#ifndef KEY_POWER
75# define KEY_POWER 116
76#endif
77#ifndef KEY_SLEEP
78# define KEY_SLEEP 142
79#endif
80
81enum {
82 OPT_c = (1 << 0),
83 OPT_d = (1 << 1),
84 OPT_e = (1 << 2),
85 OPT_f = (1 << 3),
86 OPT_l = (1 << 4),
87 OPT_a = (1 << 5),
88 OPT_M = (1 << 6),
89 OPT_p = (1 << 7) * ENABLE_FEATURE_PIDFILE,
90};
91
92struct acpi_event {
93 const char *s_type;
94 uint16_t n_type;
95 const char *s_code;
96 uint16_t n_code;
97 uint32_t value;
98 const char *desc;
99};
100
101static const struct acpi_event f_evt_tab[] = {
102 { "EV_KEY", 0x01, "KEY_POWER", 116, 1, "button/power PWRF 00000080" },
103 { "EV_KEY", 0x01, "KEY_POWER", 116, 1, "button/power PWRB 00000080" },
104 { "EV_SW", 0x05, "SW_LID", 0x00, 1, "button/lid LID0 00000080" },
105};
106
107struct acpi_action {
108 const char *key;
109 const char *action;
110};
111
112static const struct acpi_action f_act_tab[] = {
113 { "PWRF", "PWRF/00000080" },
114 { "LID0", "LID/00000080" },
115};
116
117struct globals {
118 struct acpi_action *act_tab;
119 int n_act;
120 struct acpi_event *evt_tab;
121 int n_evt;
122} FIX_ALIASING;
123#define G (*ptr_to_globals)
124#define act_tab (G.act_tab)
125#define n_act (G.n_act )
126#define evt_tab (G.evt_tab)
127#define n_evt (G.n_evt )
128#define INIT_G() do { \
129 SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
130} while (0)
131
132
133
134
135
136
137
138
139
140
141
142
143
144static void process_event(const char *event)
145{
146 struct stat st;
147 char *handler = xasprintf("./%s", event);
148 const char *args[] = { "run-parts", handler, NULL };
149
150
151 bb_error_msg("%s", event);
152
153
154
155
156
157 if (0 == stat(event, &st))
158 spawn((char **)args + (0==(st.st_mode & S_IFDIR)));
159 else
160 bb_simple_perror_msg(event);
161
162 free(handler);
163}
164
165static const char *find_action(struct input_event *ev, const char *buf)
166{
167 const char *action = NULL;
168 int i;
169
170
171 for (i = 0; i < n_evt; i++) {
172 if (ev) {
173 if (ev->type == evt_tab[i].n_type && ev->code == evt_tab[i].n_code && ev->value == evt_tab[i].value) {
174 action = evt_tab[i].desc;
175 break;
176 }
177 }
178
179 if (buf) {
180 if (is_prefixed_with(evt_tab[i].desc, buf)) {
181 action = evt_tab[i].desc;
182 break;
183 }
184 }
185 }
186
187
188 if (action) {
189 for (i = 0; i < n_act; i++) {
190 if (strstr(action, act_tab[i].key)) {
191 action = act_tab[i].action;
192 break;
193 }
194 }
195 }
196
197 return action;
198}
199
200static void parse_conf_file(const char *filename)
201{
202 parser_t *parser;
203 char *tokens[2];
204
205 parser = config_open2(filename, fopen_for_read);
206
207 if (parser) {
208 while (config_read(parser, tokens, 2, 2, "# \t", PARSE_NORMAL)) {
209 act_tab = xrealloc_vector(act_tab, 1, n_act);
210 act_tab[n_act].key = xstrdup(tokens[0]);
211 act_tab[n_act].action = xstrdup(tokens[1]);
212 n_act++;
213 }
214 config_close(parser);
215 } else {
216 act_tab = (void*)f_act_tab;
217 n_act = ARRAY_SIZE(f_act_tab);
218 }
219}
220
221static void parse_map_file(const char *filename)
222{
223 parser_t *parser;
224 char *tokens[6];
225
226 parser = config_open2(filename, fopen_for_read);
227
228 if (parser) {
229 while (config_read(parser, tokens, 6, 6, "# \t", PARSE_NORMAL)) {
230 evt_tab = xrealloc_vector(evt_tab, 1, n_evt);
231 evt_tab[n_evt].s_type = xstrdup(tokens[0]);
232 evt_tab[n_evt].n_type = xstrtou(tokens[1], 16);
233 evt_tab[n_evt].s_code = xstrdup(tokens[2]);
234 evt_tab[n_evt].n_code = xatou16(tokens[3]);
235 evt_tab[n_evt].value = xatoi_positive(tokens[4]);
236 evt_tab[n_evt].desc = xstrdup(tokens[5]);
237 n_evt++;
238 }
239 config_close(parser);
240 } else {
241 evt_tab = (void*)f_evt_tab;
242 n_evt = ARRAY_SIZE(f_evt_tab);
243 }
244}
245
246
247
248
249
250int acpid_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
251int acpid_main(int argc UNUSED_PARAM, char **argv)
252{
253 int nfd;
254 int opts;
255 struct pollfd *pfd;
256 const char *opt_dir = "/etc/acpi";
257 const char *opt_input = "/dev/input/event";
258 const char *opt_logfile = "/var/log/acpid.log";
259 const char *opt_action = "/etc/acpid.conf";
260 const char *opt_map = "/etc/acpi.map";
261#if ENABLE_FEATURE_PIDFILE
262 const char *opt_pidfile = CONFIG_PID_FILE_PATH "/acpid.pid";
263#endif
264
265 INIT_G();
266
267 opts = getopt32(argv, "^"
268 "c:de:fl:a:M:"
269 IF_FEATURE_PIDFILE("p:")
270 IF_FEATURE_ACPID_COMPAT("g:m:s:S:v")
271 "\0"
272 "df:e--e",
273 &opt_dir, &opt_input, &opt_logfile, &opt_action, &opt_map
274 IF_FEATURE_PIDFILE(, &opt_pidfile)
275 IF_FEATURE_ACPID_COMPAT(, NULL, NULL, NULL, NULL)
276 );
277
278 if (!(opts & OPT_f)) {
279
280 bb_daemonize_or_rexec(DAEMON_CLOSE_EXTRA_FDS, argv);
281 }
282
283 if (!(opts & OPT_d)) {
284
285
286
287 xmove_fd(xopen(opt_logfile, O_WRONLY | O_CREAT | O_APPEND), STDOUT_FILENO);
288 xdup2(STDOUT_FILENO, STDERR_FILENO);
289
290 openlog(applet_name, LOG_PID, LOG_DAEMON);
291 logmode = LOGMODE_SYSLOG | LOGMODE_STDIO;
292 }
293
294
295 parse_conf_file(opt_action);
296 parse_map_file(opt_map);
297
298 xchdir(opt_dir);
299
300
301 bb_signals((1 << SIGCHLD), SIG_IGN);
302
303
304
305
306
307 pfd = NULL;
308 nfd = 0;
309 while (1) {
310 int fd;
311 char *dev_event;
312
313 dev_event = xasprintf((opts & OPT_e) ? "%s" : "%s%u", opt_input, nfd);
314 fd = open(dev_event, O_RDONLY | O_NONBLOCK);
315 if (fd < 0) {
316 if (nfd == 0)
317 bb_simple_perror_msg_and_die(dev_event);
318 break;
319 }
320 free(dev_event);
321 pfd = xrealloc_vector(pfd, 1, nfd);
322 pfd[nfd].fd = fd;
323 pfd[nfd].events = POLLIN;
324 nfd++;
325 }
326
327 write_pidfile(opt_pidfile);
328
329 while (safe_poll(pfd, nfd, -1) > 0) {
330 int i;
331 for (i = 0; i < nfd; i++) {
332 const char *event;
333
334 if (!(pfd[i].revents & POLLIN)) {
335 if (pfd[i].revents == 0)
336 continue;
337
338
339
340
341 close(pfd[i].fd);
342 nfd--;
343 for (; i < nfd; i++)
344 pfd[i].fd = pfd[i + 1].fd;
345 break;
346 }
347
348 event = NULL;
349 if (option_mask32 & OPT_e) {
350 char *buf;
351 int len;
352
353 buf = xmalloc_reads(pfd[i].fd, NULL);
354
355 len = strlen(buf) - 9;
356 if (len >= 0)
357 buf[len] = '\0';
358 event = find_action(NULL, buf);
359 free(buf);
360 } else {
361 struct input_event ev;
362
363 if (sizeof(ev) != full_read(pfd[i].fd, &ev, sizeof(ev)))
364 continue;
365
366 if (ev.value != 1 && ev.value != 0)
367 continue;
368
369 event = find_action(&ev, NULL);
370 }
371 if (!event)
372 continue;
373
374 process_event(event);
375 }
376 }
377
378 if (ENABLE_FEATURE_CLEAN_UP) {
379 while (nfd--)
380 close(pfd[nfd].fd);
381 free(pfd);
382 }
383 remove_pidfile(opt_pidfile);
384
385 return EXIT_SUCCESS;
386}
387