X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fbasic%2Ftime-util.c;h=95b837a85ba9313a1cd47b39a97b145979088ea3;hp=6c8973ce31e5fa63669a88cfb53a533b489d695a;hb=8b89c78c709c597c8838095ff33845ffa7b1f268;hpb=903ff64069e63a831ad1036182d4e56421e0dc86 diff --git a/src/basic/time-util.c b/src/basic/time-util.c index 6c8973ce3..95b837a85 100644 --- a/src/basic/time-util.c +++ b/src/basic/time-util.c @@ -26,6 +26,7 @@ #include "util.h" #include "time-util.h" +#include "path-util.h" #include "strv.h" usec_t now(clockid_t clock_id) { @@ -36,6 +37,17 @@ usec_t now(clockid_t clock_id) { return timespec_load(&ts); } +/// UNNEEDED by elogind +#if 0 +nsec_t now_nsec(clockid_t clock_id) { + struct timespec ts; + + assert_se(clock_gettime(clock_id, &ts) == 0); + + return timespec_load_nsec(&ts); +} +#endif // 0 + dual_timestamp* dual_timestamp_get(dual_timestamp *ts) { assert(ts); @@ -89,7 +101,6 @@ dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) { return ts; } -#endif // 0 dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, usec_t u) { int64_t delta; @@ -115,7 +126,7 @@ dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, us return ts; } - +#endif // 0 usec_t timespec_load(const struct timespec *ts) { assert(ts); @@ -132,6 +143,18 @@ usec_t timespec_load(const struct timespec *ts) { (usec_t) ts->tv_nsec / NSEC_PER_USEC; } +nsec_t timespec_load_nsec(const struct timespec *ts) { + assert(ts); + + if (ts->tv_sec == (time_t) -1 && + ts->tv_nsec == (long) -1) + return NSEC_INFINITY; + + return + (nsec_t) ts->tv_sec * NSEC_PER_SEC + + (nsec_t) ts->tv_nsec; +} + struct timespec *timespec_store(struct timespec *ts, usec_t u) { assert(ts); @@ -474,9 +497,10 @@ int parse_timestamp(const char *t, usec_t *usec) { }; const char *k; + bool utc; struct tm tm, copy; time_t x; - usec_t plus = 0, minus = 0, ret; + usec_t x_usec, plus = 0, minus = 0, ret; int r, weekday = -1; unsigned i; @@ -501,28 +525,15 @@ int parse_timestamp(const char *t, usec_t *usec) { assert(t); assert(usec); - x = time(NULL); - assert_se(localtime_r(&x, &tm)); - tm.tm_isdst = -1; - - if (streq(t, "now")) - goto finish; - - else if (streq(t, "today")) { - tm.tm_sec = tm.tm_min = tm.tm_hour = 0; - goto finish; + if (t[0] == '@') + return parse_sec(t + 1, usec); - } else if (streq(t, "yesterday")) { - tm.tm_mday --; - tm.tm_sec = tm.tm_min = tm.tm_hour = 0; - goto finish; + ret = now(CLOCK_REALTIME); - } else if (streq(t, "tomorrow")) { - tm.tm_mday ++; - tm.tm_sec = tm.tm_min = tm.tm_hour = 0; + if (streq(t, "now")) goto finish; - } else if (t[0] == '+') { + else if (t[0] == '+') { r = parse_sec(t+1, &plus); if (r < 0) return r; @@ -536,35 +547,51 @@ int parse_timestamp(const char *t, usec_t *usec) { goto finish; - } else if (t[0] == '@') - return parse_sec(t + 1, usec); - - else if (endswith(t, " ago")) { - _cleanup_free_ char *z; + } else if (endswith(t, " ago")) { + t = strndupa(t, strlen(t) - strlen(" ago")); - z = strndup(t, strlen(t) - 4); - if (!z) - return -ENOMEM; - - r = parse_sec(z, &minus); + r = parse_sec(t, &minus); if (r < 0) return r; goto finish; - } else if (endswith(t, " left")) { - _cleanup_free_ char *z; - z = strndup(t, strlen(t) - 4); - if (!z) - return -ENOMEM; + } else if (endswith(t, " left")) { + t = strndupa(t, strlen(t) - strlen(" left")); - r = parse_sec(z, &plus); + r = parse_sec(t, &plus); if (r < 0) return r; goto finish; } + utc = endswith_no_case(t, " UTC"); + if (utc) + t = strndupa(t, strlen(t) - strlen(" UTC")); + + x = ret / USEC_PER_SEC; + x_usec = 0; + + assert_se(localtime_or_gmtime_r(&x, &tm, utc)); + tm.tm_isdst = -1; + + if (streq(t, "today")) { + tm.tm_sec = tm.tm_min = tm.tm_hour = 0; + goto from_tm; + + } else if (streq(t, "yesterday")) { + tm.tm_mday --; + tm.tm_sec = tm.tm_min = tm.tm_hour = 0; + goto from_tm; + + } else if (streq(t, "tomorrow")) { + tm.tm_mday ++; + tm.tm_sec = tm.tm_min = tm.tm_hour = 0; + goto from_tm; + } + + for (i = 0; i < ELEMENTSOF(day_nr); i++) { size_t skip; @@ -582,66 +609,106 @@ int parse_timestamp(const char *t, usec_t *usec) { copy = tm; k = strptime(t, "%y-%m-%d %H:%M:%S", &tm); - if (k && *k == 0) - goto finish; + if (k) { + if (*k == '.') + goto parse_usec; + else if (*k == 0) + goto from_tm; + } tm = copy; k = strptime(t, "%Y-%m-%d %H:%M:%S", &tm); - if (k && *k == 0) - goto finish; + if (k) { + if (*k == '.') + goto parse_usec; + else if (*k == 0) + goto from_tm; + } tm = copy; k = strptime(t, "%y-%m-%d %H:%M", &tm); if (k && *k == 0) { tm.tm_sec = 0; - goto finish; + goto from_tm; } tm = copy; k = strptime(t, "%Y-%m-%d %H:%M", &tm); if (k && *k == 0) { tm.tm_sec = 0; - goto finish; + goto from_tm; } tm = copy; k = strptime(t, "%y-%m-%d", &tm); if (k && *k == 0) { tm.tm_sec = tm.tm_min = tm.tm_hour = 0; - goto finish; + goto from_tm; } tm = copy; k = strptime(t, "%Y-%m-%d", &tm); if (k && *k == 0) { tm.tm_sec = tm.tm_min = tm.tm_hour = 0; - goto finish; + goto from_tm; } tm = copy; k = strptime(t, "%H:%M:%S", &tm); - if (k && *k == 0) - goto finish; + if (k) { + if (*k == '.') + goto parse_usec; + else if (*k == 0) + goto from_tm; + } tm = copy; k = strptime(t, "%H:%M", &tm); if (k && *k == 0) { tm.tm_sec = 0; - goto finish; + goto from_tm; } return -EINVAL; -finish: - x = mktime(&tm); +parse_usec: + { + char *end; + unsigned long long val; + size_t l; + + k++; + if (*k < '0' || *k > '9') + return -EINVAL; + + /* base 10 instead of base 0, .09 is not base 8 */ + errno = 0; + val = strtoull(k, &end, 10); + if (*end || errno) + return -EINVAL; + + l = end-k; + + /* val has l digits, make them 6 */ + for (; l < 6; l++) + val *= 10; + for (; l > 6; l--) + val /= 10; + + x_usec = val; + } + +from_tm: + x = mktime_or_timegm(&tm, utc); if (x == (time_t) -1) return -EINVAL; if (weekday >= 0 && tm.tm_wday != weekday) return -EINVAL; - ret = (usec_t) x * USEC_PER_SEC; + ret = (usec_t) x * USEC_PER_SEC + x_usec; +finish: ret += plus; if (ret > minus) ret -= minus; @@ -777,6 +844,8 @@ int parse_sec(const char *t, usec_t *usec) { return 0; } +/// UNNEEDED by elogind +#if 0 int parse_nsec(const char *t, nsec_t *nsec) { static const struct { const char *suffix; @@ -902,8 +971,6 @@ int parse_nsec(const char *t, nsec_t *nsec) { return 0; } -/// UNNEEDED by elogind -#if 0 bool ntp_synced(void) { struct timex txc = {}; @@ -985,7 +1052,10 @@ bool timezone_is_valid(const char *name) { const char *p, *t; struct stat st; - if (!name || *name == 0 || *name == '/') + if (isempty(name)) + return false; + + if (name[0] == '/') return false; for (p = name; *p; p++) { @@ -1017,7 +1087,6 @@ bool timezone_is_valid(const char *name) { return true; } -#endif // 0 clockid_t clock_boottime_or_monotonic(void) { static clockid_t clock = -1; @@ -1036,3 +1105,31 @@ clockid_t clock_boottime_or_monotonic(void) { return clock; } + +int get_timezone(char **tz) { + _cleanup_free_ char *t = NULL; + const char *e; + char *z; + int r; + + r = readlink_malloc("/etc/localtime", &t); + if (r < 0) + return r; /* returns EINVAL if not a symlink */ + + e = path_startswith(t, "/usr/share/zoneinfo/"); + if (!e) + e = path_startswith(t, "../usr/share/zoneinfo/"); + if (!e) + return -EINVAL; + + if (!timezone_is_valid(e)) + return -EINVAL; + + z = strdup(e); + if (!z) + return -ENOMEM; + + *tz = z; + return 0; +} +#endif // 0