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5415c856ea
(by Valdimir) function old new delta config_open2 - 41 +41 config_read 507 542 +35 find_pair 169 187 +18 fopen_for_write - 14 +14 fopen_for_read - 14 +14 find_main 406 418 +12 xfopen_for_write - 10 +10 xfopen_for_read - 10 +10 popstring 134 140 +6 parse_inittab 396 401 +5 next_token 923 928 +5 pack_gzip 1659 1661 +2 bb__parsespent 117 119 +2 fallbackSort 1719 1717 -2 evalvar 1376 1374 -2 qrealloc 36 33 -3 ... ... ... ... singlemount 4579 4569 -10 process_stdin 443 433 -10 patch_main 1111 1101 -10 ifupdown_main 2175 2165 -10 file_action_grep 90 80 -10 uuidcache_init 649 637 -12 hush_main 797 785 -12 read_config 230 217 -13 dpkg_main 3835 3820 -15 read_line_input 3134 3110 -24 sysctl_main 232 203 -29 config_open 40 10 -30 WARN_BAD_LINE 44 - -44 login_main 1714 1575 -139 ------------------------------------------------------------------------------ (add/remove: 5/1 grow/shrink: 8/74 up/down: 174/-737) Total: -563 bytes
89 lines
1.4 KiB
C
89 lines
1.4 KiB
C
/*
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* Common RTC functions
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*/
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#include "libbb.h"
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#include "rtc_.h"
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#if ENABLE_FEATURE_HWCLOCK_ADJTIME_FHS
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# define ADJTIME_PATH "/var/lib/hwclock/adjtime"
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#else
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# define ADJTIME_PATH "/etc/adjtime"
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#endif
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int FAST_FUNC rtc_adjtime_is_utc(void)
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{
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int utc = 0;
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FILE *f = fopen_for_read(ADJTIME_PATH);
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if (f) {
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RESERVE_CONFIG_BUFFER(buffer, 128);
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while (fgets(buffer, sizeof(buffer), f)) {
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int len = strlen(buffer);
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while (len && isspace(buffer[len - 1]))
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len--;
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buffer[len] = 0;
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if (strncmp(buffer, "UTC", 3) == 0) {
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utc = 1;
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break;
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}
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}
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fclose(f);
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RELEASE_CONFIG_BUFFER(buffer);
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}
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return utc;
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}
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int FAST_FUNC rtc_xopen(const char **default_rtc, int flags)
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{
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int rtc;
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if (!*default_rtc) {
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*default_rtc = "/dev/rtc";
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rtc = open(*default_rtc, flags);
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if (rtc >= 0)
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return rtc;
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*default_rtc = "/dev/rtc0";
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rtc = open(*default_rtc, flags);
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if (rtc >= 0)
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return rtc;
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*default_rtc = "/dev/misc/rtc";
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}
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return xopen(*default_rtc, flags);
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}
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time_t FAST_FUNC rtc_read_time(int fd, int utc)
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{
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struct tm tm;
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char *oldtz = 0;
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time_t t = 0;
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memset(&tm, 0, sizeof(struct tm));
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xioctl(fd, RTC_RD_TIME, &tm);
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tm.tm_isdst = -1; /* not known */
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if (utc) {
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oldtz = getenv("TZ");
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putenv((char*)"TZ=UTC0");
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tzset();
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}
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t = mktime(&tm);
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if (utc) {
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unsetenv("TZ");
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if (oldtz)
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putenv(oldtz - 3);
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tzset();
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}
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return t;
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}
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