1#include <time.h>
 2#if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
 3#include <pthread.h>
 4#endif
 5#include <errno.h>
 6#include <stdio.h>
 7#include <stdlib.h>
 8
 9int getdate_err;
10
11struct tm *getdate(const char *s)
12{
13	static struct tm tmbuf;
14	struct tm *ret = 0;
15	char *datemsk = getenv("DATEMSK");
16	FILE *f = 0;
17	char fmt[100], *p;
18	int cs;
19
20#if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
21	pthread_setcancelstate(PTHREAD_CANCEL_DEFERRED, &cs);
22#endif
23
24	if (!datemsk) {
25		getdate_err = 1;
26		goto out;
27	}
28
29	f = fopen(datemsk, "rbe");
30	if (!f) {
31		if (errno == ENOMEM) getdate_err = 6;
32		else getdate_err = 2;
33		goto out;
34	}
35
36	while (fgets(fmt, sizeof fmt, f)) {
37		p = strptime(s, fmt, &tmbuf);
38		if (p && !*p) {
39			ret = &tmbuf;
40			goto out;
41		}
42	}
43
44	if (ferror(f)) getdate_err = 5;
45	else getdate_err = 7;
46out:
47	if (f) fclose(f);
48#if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
49	pthread_setcancelstate(cs, 0);
50#endif
51	return ret;
52}