util: split-out hwclock.[ch]

[elogind.git] / src / shared / util.c

diff --git a/src/shared/util.c b/src/shared/util.c
index d6f5661c245b5e3d3d2c63497eca064e966fd4da..a055ce197ddf44881182d4e3b4d9da65fa4d6ab5 100644 (file)
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -52,7 +52,6 @@
 #include <sys/wait.h>
 #include <sys/capability.h>
 #include <sys/time.h>
-#include <linux/rtc.h>
 #include <glob.h>
 #include <grp.h>
 #include <sys/mman.h>
@@ -4863,192 +4862,6 @@ int vt_disallocate(const char *name) {
         return 0;
 }
 
-int hwclock_is_localtime(void) {
-        FILE *f;
-        bool local = false;
-
-        /*
-         * The third line of adjtime is "UTC" or "LOCAL" or nothing.
-         *   # /etc/adjtime
-         *   0.0 0 0
-         *   0
-         *   UTC
-         */
-        f = fopen("/etc/adjtime", "re");
-        if (f) {
-                char line[LINE_MAX];
-                bool b;
-
-                b = fgets(line, sizeof(line), f) &&
-                        fgets(line, sizeof(line), f) &&
-                        fgets(line, sizeof(line), f);
-
-                fclose(f);
-
-                if (!b)
-                        return -EIO;
-
-                truncate_nl(line);
-                local = streq(line, "LOCAL");
-
-        } else if (errno != -ENOENT)
-                return -errno;
-
-        return local;
-}
-
-int hwclock_apply_localtime_delta(int *min) {
-        const struct timeval *tv_null = NULL;
-        struct timespec ts;
-        struct tm *tm;
-        int minuteswest;
-        struct timezone tz;
-
-        assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0);
-        assert_se(tm = localtime(&ts.tv_sec));
-        minuteswest = tm->tm_gmtoff / 60;
-
-        tz.tz_minuteswest = -minuteswest;
-        tz.tz_dsttime = 0; /* DST_NONE*/
-
-        /*
-         * If the hardware clock does not run in UTC, but in local time:
-         * The very first time we set the kernel's timezone, it will warp
-         * the clock so that it runs in UTC instead of local time.
-         */
-        if (settimeofday(tv_null, &tz) < 0)
-                return -errno;
-        if (min)
-                *min = minuteswest;
-        return 0;
-}
-
-int hwclock_reset_localtime_delta(void) {
-        const struct timeval *tv_null = NULL;
-        struct timezone tz;
-
-        tz.tz_minuteswest = 0;
-        tz.tz_dsttime = 0; /* DST_NONE*/
-
-        if (settimeofday(tv_null, &tz) < 0)
-                return -errno;
-
-        return 0;
-}
-
-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 buf, *de;
-                int r;
-
-                r = readdir_r(d, &buf, &de);
-                if (r != 0)
-                        goto fallback;
-
-                if (!de)
-                        goto fallback;
-
-                if (ignore_file(de->d_name))
-                        continue;
-
-                p = join("/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);
-                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);
-        if (fd < 0)
-                return -errno;
-
-        /* This leaves the timezone fields of struct tm
-         * uninitialized! */
-        if (ioctl(fd, RTC_RD_TIME, tm) < 0)
-                err = -errno;
-
-        /* We don't know daylight saving, so we reset this in order not
-         * to confused mktime(). */
-        tm->tm_isdst = -1;
-
-        close_nointr_nofail(fd);
-
-        return err;
-}
-
-int hwclock_set_time(const struct tm *tm) {
-        int fd;
-        int err = 0;
-
-        assert(tm);
-
-        fd = rtc_open(O_RDONLY|O_CLOEXEC);
-        if (fd < 0)
-                return -errno;
-
-        if (ioctl(fd, RTC_SET_TIME, tm) < 0)
-                err = -errno;
-
-        close_nointr_nofail(fd);
-
-        return err;
-}
-
 int copy_file(const char *from, const char *to) {
         int r, fdf, fdt;