11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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***/
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#include <getopt.h>
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#include "util.h"
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static bool arg_verbose = false;
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static void help(void) {
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printf("%s\n\n"
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"Report whether we are connected to an external power source.\n\n"
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" -h --help Show this help\n"
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" --version Show package version\n"
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" -v --verbose Show state as text\n"
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, program_invocation_short_name);
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}
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static int parse_argv(int argc, char *argv[]) {
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enum {
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ARG_VERSION = 0x100,
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};
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static const struct option options[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, ARG_VERSION },
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{ "verbose", no_argument, NULL, 'v' },
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{}
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};
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int c;
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assert(argc >= 0);
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assert(argv);
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while ((c = getopt_long(argc, argv, "hv", options, NULL)) >= 0)
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switch (c) {
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case 'h':
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help();
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return 0;
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case ARG_VERSION:
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return version();
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case 'v':
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arg_verbose = true;
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break;
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case '?':
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return -EINVAL;
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default:
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assert_not_reached("Unhandled option");
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}
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if (optind < argc) {
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log_error("%s takes no arguments.", program_invocation_short_name);
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return -EINVAL;
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}
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return 1;
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}
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int main(int argc, char *argv[]) {
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int r;
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/* This is mostly intended to be used for scripts which want
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* to detect whether AC power is plugged in or not. */
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log_parse_environment();
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log_open();
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r = parse_argv(argc, argv);
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if (r <= 0)
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goto finish;
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r = on_ac_power();
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if (r < 0) {
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log_error_errno(r, "Failed to read AC status: %m");
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goto finish;
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}
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if (arg_verbose)
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puts(yes_no(r));
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finish:
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return r < 0 ? EXIT_FAILURE : !r;
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}
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