#include "hwclock.h"
#include "fileio.h"
-static int rtc_open(int flags) {
- int fd;
- DIR *d;
-
- /* First, we try to make use of the /dev/rtc symlink. If that
- * doesn't exist, we open the first RTC which has hctosys=1
- * set. If we don't find any we just take the first RTC that
- * exists at all. */
-
- fd = open("/dev/rtc", flags);
- if (fd >= 0)
- return fd;
-
- d = opendir("/sys/class/rtc");
- if (!d)
- goto fallback;
-
- for (;;) {
- char *p, *v;
- struct dirent *de;
- union dirent_storage buf;
- int r;
-
- r = readdir_r(d, &buf.de, &de);
- if (r != 0)
- goto fallback;
-
- if (!de)
- goto fallback;
-
- if (ignore_file(de->d_name))
- continue;
-
- p = strjoin("/sys/class/rtc/", de->d_name, "/hctosys", NULL);
- if (!p) {
- closedir(d);
- return -ENOMEM;
- }
-
- r = read_one_line_file(p, &v);
- free(p);
-
- if (r < 0)
- continue;
-
- r = parse_boolean(v);
- free(v);
-
- if (r <= 0)
- continue;
-
- p = strappend("/dev/", de->d_name);
- if (!p) {
- closedir(d);
- return -ENOMEM;
- }
-
- fd = open(p, flags);
- free(p);
-
- if (fd >= 0) {
- closedir(d);
- return fd;
- }
- }
-
-fallback:
- if (d)
- closedir(d);
-
- fd = open("/dev/rtc0", flags);
- if (fd < 0)
- return -errno;
-
- return fd;
-}
-
int hwclock_get_time(struct tm *tm) {
int fd;
int err = 0;
assert(tm);
- fd = rtc_open(O_RDONLY|O_CLOEXEC);
+ fd = open("/dev/rtc", O_RDONLY|O_CLOEXEC);
if (fd < 0)
return -errno;
assert(tm);
- fd = rtc_open(O_RDONLY|O_CLOEXEC);
+ fd = open("/dev/rtc", O_RDONLY|O_CLOEXEC);
if (fd < 0)
return -errno;
}
int hwclock_is_localtime(void) {
- FILE _cleanup_fclose_ *f;
+ _cleanup_fclose_ FILE *f;
/*
* The third line of adjtime is "UTC" or "LOCAL" or nothing.
/*
* The very first time we set the kernel's timezone, it will warp
* the clock. Do a dummy call here, so the time warping is sealed
- * and we set only the time zone with next call.
+ * and we set only the timezone with next call.
*/
if (settimeofday(tv_null, &tz) < 0)
return -errno;