X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Ftime.c;h=c69002f3456c33de8ea6ff33fef7610d5745d3b2;hp=5519e3ab4715240cfd1b27ef7701d36c1b737039;hb=8de8806159d9d2544e2bc3091cc3c98abe4d97ad;hpb=2a1135fa25ad1fcad3b395e795aa6d41afc90c54 diff --git a/src/common/time.c b/src/common/time.c index 5519e3ab4..c69002f34 100644 --- a/src/common/time.c +++ b/src/common/time.c @@ -16,7 +16,9 @@ */ #include +#include #include +#include #include #include #include @@ -76,7 +78,39 @@ void __attribute__((constructor)) init_locale_utf8_support(void) if (program_locale && strstr(program_locale, "utf8")) { utf8_output_supported = true; - } else if (strstr(lang, "utf8")) { + } else if (lang && strstr(lang, "utf8")) { utf8_output_supported = true; } } + +LTTNG_HIDDEN +int time_to_iso8601_str(time_t time, char *str, size_t len) +{ + int ret = 0; + struct tm *tm_result; + struct tm tm_storage; + size_t strf_ret; + + if (len < ISO8601_STR_LEN) { + ERR("Buffer too short to format ISO 8601 timestamp: %zu bytes provided when at least %zu are needed", + len, ISO8601_STR_LEN); + ret = -1; + goto end; + } + + tm_result = localtime_r(&time, &tm_storage); + if (!tm_result) { + ret = -1; + PERROR("Failed to break down timestamp to tm structure"); + goto end; + } + + strf_ret = strftime(str, len, "%Y%m%dT%H%M%S%z", tm_result); + if (strf_ret == 0) { + ret = -1; + ERR("Failed to format timestamp as local time"); + goto end; + } +end: + return ret; +}