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https://github.com/sheumann/hush.git
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acpid: add config file and map file
function old new delta acpid_main 434 1137 +703 find_action - 204 +204 f_evt_tab - 48 +48 packed_usage 27724 27755 +31 f_act_tab - 16 +16 process_event 126 - -126 ------------------------------------------------------------------------------ (add/remove: 3/1 grow/shrink: 2/0 up/down: 1002/-126) Total: 876 bytes Signed-off-by: Souf Oued <souf_oued@yahoo.fr> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Souf Oued
Denys Vlasenko
parent
7d3a48a003
commit
ccb7a43900
@ -18,21 +18,27 @@
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INSERT
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#define acpid_trivial_usage \
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"[-d] [-c CONFDIR] [-l LOGFILE] [-e PROC_EVENT_FILE] [EVDEV_EVENT_FILE]..."
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"[-d] [-c CONFDIR] [-l LOGFILE] [-a ACTIONFILE] [-M MAPFILE] [-e PROC_EVENT_FILE] [-p PIDFILE]"
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#define acpid_full_usage "\n\n" \
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"Listen to ACPI events and spawn specific helpers on event arrival\n" \
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"\nOptions:" \
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"\n -d Don't daemonize, log to stderr" \
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"\n -c DIR Config directory [/etc/acpi]" \
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"\n -d Don't daemonize, (implies -f)" \
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"\n -e FILE /proc event file [/proc/acpi/event]" \
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"\n -l FILE Log file [/var/log/acpid]" \
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"\n -f Run in foreground" \
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"\n -l FILE Log file [/var/log/acpid.log]" \
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"\n -p FILE Pid file [/var/run/acpid.pid]" \
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"\n -a FILE Action file [/etc/acpid.conf]" \
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"\n -M FILE Map file [/etc/acpi.map]" \
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IF_FEATURE_ACPID_COMPAT( \
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"\n\nAccept and ignore compatibility options -g -m -s -S -v" \
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)
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#define acpid_example_usage \
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"Without -e option, acpid uses all /dev/input/event* files\n" \
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"# acpid\n" \
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"# acpid -l /var/log/my-acpi-log\n" \
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"# acpid -d /dev/input/event*\n"
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"# acpid -e /proc/acpi/event\n"
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#define addgroup_trivial_usage \
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"[-g GID] " IF_FEATURE_ADDUSER_TO_GROUP("[USER] ") "GROUP"
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@ -7,27 +7,58 @@
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* Licensed under GPLv2, see file LICENSE in this source tree.
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*/
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#include "libbb.h"
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#include <syslog.h>
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#include <linux/input.h>
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#ifndef EV_SW
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# define EV_SW 0x05
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#endif
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#ifndef EV_KEY
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# define EV_KEY 0x01
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#endif
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#ifndef SW_LID
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# define SW_LID 0x00
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#endif
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#ifndef SW_RFKILL_ALL
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# define SW_RFKILL_ALL 0x03
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#endif
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#ifndef KEY_POWER
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# define KEY_POWER 116 /* SC System Power Down */
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#endif
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#ifndef KEY_SLEEP
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# define KEY_SLEEP 142 /* SC System Sleep */
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#endif
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enum {
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OPT_c = (1 << 0),
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OPT_d = (1 << 1),
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OPT_e = (1 << 2),
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OPT_f = (1 << 3),
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OPT_l = (1 << 4),
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OPT_p = (1 << 5) * ENABLE_FEATURE_PIDFILE,
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OPT_a = (1 << 6),
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OPT_M = (1 << 7),
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};
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struct acpi_event {
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const char *s_type;
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uint16_t n_type;
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const char *s_code;
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uint16_t n_code;
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uint32_t value;
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const char *desc;
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};
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static const struct acpi_event f_evt_tab[] = {
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{ "EV_KEY", 0x01, "KEY_POWER", 116, 1, "button/power PWRF 00000080" },
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{ "EV_KEY", 0x01, "KEY_POWER", 116, 1, "button/power PWRB 00000080" },
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};
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struct acpi_action {
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const char *key;
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const char *action;
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};
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static const struct acpi_action f_act_tab[] = {
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{ "PWRF", "PWRF/00000080" },
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{ "LID0", "LID/00000080" },
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};
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struct globals {
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struct acpi_action *act_tab;
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int n_act;
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struct acpi_event *evt_tab;
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int n_evt;
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} FIX_ALIASING;
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#define G (*ptr_to_globals)
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#define act_tab (G.act_tab)
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#define n_act (G.n_act )
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#define evt_tab (G.evt_tab)
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#define n_evt (G.n_evt )
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#define INIT_G() do { \
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SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
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} while (0)
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/*
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* acpid listens to ACPI events coming either in textual form
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@ -48,7 +79,7 @@ static void process_event(const char *event)
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const char *args[] = { "run-parts", handler, NULL };
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// debug info
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if (option_mask32 & 8) { // -d
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if (option_mask32 & OPT_d) {
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bb_error_msg("%s", event);
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}
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@ -60,125 +91,204 @@ static void process_event(const char *event)
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spawn((char **)args + (0==(st.st_mode & S_IFDIR)));
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else
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bb_simple_perror_msg(event);
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free(handler);
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}
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/*
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* acpid [-c conf_dir] [-l log_file] [-e proc_event_file] [evdev_event_file...]
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*/
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int acpid_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int acpid_main(int argc, char **argv)
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static const char *find_action(struct input_event *ev, const char *buf)
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{
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struct pollfd *pfd;
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int i, nfd;
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const char *opt_conf = "/etc/acpi";
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const char *opt_input = "/proc/acpi/event";
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const char *opt_logfile = "/var/log/acpid.log";
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const char *action = NULL;
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int i;
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getopt32(argv, "c:e:l:d"
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IF_FEATURE_ACPID_COMPAT("g:m:s:S:v"),
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&opt_conf, &opt_input, &opt_logfile
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IF_FEATURE_ACPID_COMPAT(, NULL, NULL, NULL, NULL, NULL)
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);
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// daemonize unless -d given
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if (!(option_mask32 & 8)) { // ! -d
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bb_daemonize_or_rexec(0, argv);
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close(2);
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xopen(opt_logfile, O_WRONLY | O_CREAT | O_TRUNC);
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}
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argv += optind;
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argc -= optind;
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// goto configuration directory
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xchdir(opt_conf);
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// prevent zombies
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signal(SIGCHLD, SIG_IGN);
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// no explicit evdev files given? -> use proc event interface
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if (!*argv) {
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// proc_event file is just a "config" :)
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char *token[4];
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parser_t *parser = config_open(opt_input);
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// dispatch events
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while (config_read(parser, token, 4, 4, "\0 ", PARSE_NORMAL)) {
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char *event = xasprintf("%s/%s", token[1], token[2]);
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process_event(event);
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free(event);
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// map event
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for (i = 0; i < n_evt; i++) {
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if (ev) {
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if (ev->type == evt_tab[i].n_type && ev->code == evt_tab[i].n_code && ev->value == evt_tab[i].value) {
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action = evt_tab[i].desc;
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break;
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}
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}
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if (ENABLE_FEATURE_CLEAN_UP)
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config_close(parser);
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return EXIT_SUCCESS;
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if (buf) {
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if (strncmp(buf, evt_tab[i].desc, strlen(buf)) == 0) {
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action = evt_tab[i].desc;
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break;
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}
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}
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}
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// evdev files given, use evdev interface
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// get action
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if (action) {
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for (i = 0; i < n_act; i++) {
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if (strstr(action, act_tab[i].key)) {
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action = act_tab[i].action;
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break;
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}
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}
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}
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// open event devices
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pfd = xzalloc(sizeof(*pfd) * argc);
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return action;
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}
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static void parse_conf_file(const char *filename)
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{
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parser_t *parser;
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char *tokens[2];
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parser = config_open2(filename, fopen_for_read);
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if (parser) {
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while (config_read(parser, tokens, 2, 2, "# \t", PARSE_NORMAL)) {
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act_tab = xrealloc_vector(act_tab, 1, n_act);
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act_tab[n_act].key = xstrdup(tokens[0]);
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act_tab[n_act].action = xstrdup(tokens[1]);
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n_act++;
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}
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config_close(parser);
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} else {
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act_tab = (void*)f_act_tab;
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n_act = ARRAY_SIZE(f_act_tab);
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}
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}
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static void parse_map_file(const char *filename)
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{
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parser_t *parser;
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char *tokens[6];
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parser = config_open2(filename, fopen_for_read);
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if (parser) {
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while (config_read(parser, tokens, 6, 6, "# \t", PARSE_NORMAL)) {
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evt_tab = xrealloc_vector(evt_tab, 1, n_evt);
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evt_tab[n_evt].s_type = xstrdup(tokens[0]);
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evt_tab[n_evt].n_type = xstrtou(tokens[1], 16);
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evt_tab[n_evt].s_code = xstrdup(tokens[2]);
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evt_tab[n_evt].n_code = xatou16(tokens[3]);
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evt_tab[n_evt].value = xatoi_positive(tokens[4]);
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evt_tab[n_evt].desc = xstrdup(tokens[5]);
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n_evt++;
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}
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config_close(parser);
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} else {
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evt_tab = (void*)f_evt_tab;
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n_evt = ARRAY_SIZE(f_evt_tab);
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}
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}
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/*
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* acpid [-c conf_dir] [-r conf_file ] [-a map_file ] [-l log_file] [-e proc_event_file]
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*/
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int acpid_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int acpid_main(int argc UNUSED_PARAM, char **argv)
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{
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struct input_event ev;
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int nfd;
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int opts;
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struct pollfd *pfd;
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const char *opt_dir = "/etc/acpi";
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const char *opt_input = "/dev/input/event";
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const char *opt_logfile = "/var/log/acpid.log";
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const char *opt_action = "/etc/acpid.conf";
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const char *opt_map = "/etc/acpi.map";
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#if ENABLE_FEATURE_PIDFILE
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const char *opt_pidfile = "/var/run/acpid.pid";
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#endif
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INIT_G();
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opt_complementary = "df:e--e";
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opts = getopt32(argv, "c:de:fl:p:a:M:" IF_FEATURE_ACPID_COMPAT("g:m:s:S:v"),
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&opt_dir, &opt_input, &opt_logfile, &opt_pidfile, &opt_action, &opt_map
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IF_FEATURE_ACPID_COMPAT(, NULL, NULL, NULL, NULL)
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);
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if (!(opts & OPT_f)) {
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bb_daemonize_or_rexec(DAEMON_CLOSE_EXTRA_FDS, argv);
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}
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if (!(opts & OPT_d)) {
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openlog(applet_name, LOG_PID, LOG_DAEMON);
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logmode = LOGMODE_SYSLOG | LOGMODE_STDIO;
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} else {
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xmove_fd(xopen(opt_logfile, O_WRONLY | O_CREAT | O_TRUNC), STDOUT_FILENO);
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}
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parse_conf_file(opt_action);
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parse_map_file(opt_map);
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xchdir(opt_dir);
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bb_signals((1 << SIGCHLD), SIG_IGN);
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bb_signals(BB_FATAL_SIGS, record_signo);
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pfd = NULL;
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nfd = 0;
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while (*argv) {
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pfd[nfd].fd = open_or_warn(*argv++, O_RDONLY | O_NONBLOCK);
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if (pfd[nfd].fd >= 0)
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pfd[nfd++].events = POLLIN;
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while (1) {
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int fd;
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char *dev_event;
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dev_event = xasprintf((option_mask32 & OPT_e) ? "%s" : "%s%u", opt_input, nfd);
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fd = open(dev_event, O_RDONLY | O_NONBLOCK);
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if (fd < 0) {
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if (nfd == 0)
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bb_simple_perror_msg_and_die(dev_event);
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break;
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}
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pfd = xrealloc_vector(pfd, 1, nfd);
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pfd[nfd].fd = fd;
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pfd[nfd].events = POLLIN;
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nfd++;
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}
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// dispatch events
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while (/* !bb_got_signal && */ poll(pfd, nfd, -1) > 0) {
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write_pidfile(opt_pidfile);
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while (poll(pfd, nfd, -1) > 0) {
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int i;
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for (i = 0; i < nfd; i++) {
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const char *event;
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struct input_event ev;
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const char *event = NULL;
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memset(&ev, 0, sizeof(ev));
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if (!(pfd[i].revents & POLLIN))
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continue;
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if (sizeof(ev) != full_read(pfd[i].fd, &ev, sizeof(ev)))
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continue;
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//bb_info_msg("%d: %d %d %4d", i, ev.type, ev.code, ev.value);
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if (option_mask32 & OPT_e) {
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char *buf;
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int len;
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// filter out unneeded events
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if (ev.value != 1)
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continue;
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buf = xmalloc_reads(pfd[i].fd, NULL, NULL);
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/* buf = "button/power PWRB 00000080 00000000" */
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len = strlen(buf) - 9;
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if (len >= 0)
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buf[len] = '\0';
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event = find_action(NULL, buf);
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} else {
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if (sizeof(ev) != full_read(pfd[i].fd, &ev, sizeof(ev)))
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continue;
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event = NULL;
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if (ev.value != 1 && ev.value != 0)
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continue;
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// N.B. we will conform to /proc/acpi/event
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// naming convention when assigning event names
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// TODO: do we want other events?
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// power and sleep buttons delivered as keys pressed
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if (EV_KEY == ev.type) {
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if (KEY_POWER == ev.code)
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event = "PWRF/00000080";
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else if (KEY_SLEEP == ev.code)
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event = "SLPB/00000080";
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event = find_action(&ev, NULL);
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}
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// switches
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else if (EV_SW == ev.type) {
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if (SW_LID == ev.code)
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event = "LID/00000080";
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else if (SW_RFKILL_ALL == ev.code)
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event = "RFKILL";
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}
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// filter out unneeded events
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if (!event)
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continue;
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// spawn event handler
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process_event(event);
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}
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}
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if (ENABLE_FEATURE_CLEAN_UP) {
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for (i = 0; i < nfd; i++)
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close(pfd[i].fd);
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while (nfd--) {
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if (pfd[nfd].fd) {
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close(pfd[nfd].fd);
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}
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}
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free(pfd);
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}
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remove_pidfile(opt_pidfile);
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return EXIT_SUCCESS;
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}
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