diff options
Diffstat (limited to 'missing_d')
| -rw-r--r-- | missing_d/ChangeLog | 4 | ||||
| -rw-r--r-- | missing_d/timegm.c | 29 |
2 files changed, 33 insertions, 0 deletions
diff --git a/missing_d/ChangeLog b/missing_d/ChangeLog index 1969f52e..9fd121a3 100644 --- a/missing_d/ChangeLog +++ b/missing_d/ChangeLog @@ -1,3 +1,7 @@ +2018-12-12 Andrew J. Schorr <aschorr@telemetry-investments.com> + + * timegm.c: New file implementing timegm. + 2018-10-03 Arnold D. Robbins <arnold@skeeve.com> * intprops.h, verify.h: Removed. The copy in ../support is diff --git a/missing_d/timegm.c b/missing_d/timegm.c new file mode 100644 index 00000000..f7b780de --- /dev/null +++ b/missing_d/timegm.c @@ -0,0 +1,29 @@ +#include <time.h> +#include <stdlib.h> + +static time_t +timegm(struct tm *tm) +{ + time_t ret; + char *tz = getenv("TZ"); + const char *tzreq = "UTC+0"; /* more portable than ""? */ + + if (tz) + tz = estrdup(tz, strlen(tz)); + if (setenv("TZ", tzreq, 1) < 0) { + warning(_("setenv(TZ, %s) failed (%s)"), tzreq, strerror(errno)); + return -1; + } + tzset(); + ret = mktime(tm); + if (tz) { + if (setenv("TZ", tz, 1) < 0) + fatal(_("setenv(TZ, %s) restoration failed (%s)"), tz, strerror(errno)); + free(tz); + } else { + if (unsetenv("TZ") < 0) + fatal(_("unsetenv(TZ) failed (%s)"), strerror(errno)); + } + tzset(); + return ret; +} |