[wasi-libc.git] / libc-top-half / musl / src / legacy / cuserid.c

#define _GNU_SOURCE
#include <pwd.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>

char *cuserid(char *buf)
{
	static char usridbuf[L_cuserid];
	struct passwd pw, *ppw;
	long pwb[256];
	if (buf) *buf = 0;
	getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw);
	if (!ppw)
		return buf;
	size_t len = strnlen(pw.pw_name, L_cuserid);
	if (len == L_cuserid)
		return buf;
	if (!buf) buf = usridbuf;
	memcpy(buf, pw.pw_name, len+1);
	return buf;
}
Commit	Line	Data
320054e8 DG	1	#define _GNU_SOURCE
	2	#include <pwd.h>
	3	#include <stdio.h>
	4	#include <unistd.h>
5d8a1409	5	#include <string.h>
320054e8 DG	6
	7	char cuserid(char buf)
	8	{
5d8a1409	9	static char usridbuf[L_cuserid];
320054e8 DG	10	struct passwd pw, *ppw;
320054e8 DG	11	long pwb[256];
5d8a1409 DG	12	if (buf) *buf = 0;
	13	getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw);
	14	if (!ppw)
	15	return buf;
	16	size_t len = strnlen(pw.pw_name, L_cuserid);
	17	if (len == L_cuserid)
	18	return buf;
	19	if (!buf) buf = usridbuf;
	20	memcpy(buf, pw.pw_name, len+1);
320054e8 DG	21	return buf;
320054e8 DG	22	}