path: root/libgcompat/pwd.c

/* some musl versions incorrectly mark fgetpwent() as a GNU extension */
#define _GNU_SOURCE

#include <errno.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>

int getpwent_r(struct passwd *pwbuf, char *buf, size_t buflen,
               struct passwd **pwbufp)
{
	struct passwd *pwd;

	if (pwbufp == NULL || pwbuf == NULL) {
		return ERANGE;
	}

	if (buflen < 1) {
		return ERANGE;
	}

	if (buf != NULL) {
		*buf = '\0';
	}

	if ((pwd = getpwent()) == NULL) {
		*pwbufp = NULL;
		return ENOENT;
	}

	memcpy(pwbuf, pwd, sizeof(*pwd));
	*pwbufp = pwbuf;

	return 0;
}

int fgetpwent_r(FILE *filp, struct passwd *pwbuf, char *buf, size_t buflen,
                struct passwd **pwbufp)
{
	struct passwd *pwd;

	if (pwbufp == NULL || pwbuf == NULL) {
		return ERANGE;
	}

	if (buflen < 1) {
		return ERANGE;
	}

	if (buf != NULL) {
		*buf = '\0';
	}

	if ((pwd = fgetpwent(filp)) == NULL) {
		*pwbufp = NULL;
		return ENOENT;
	}

	memcpy(pwbuf, pwd, sizeof(*pwd));
	*pwbufp = pwbuf;

	return 0;
}