mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-22 19:00:07 +00:00
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* Copyright (C) 1991 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <ansidecl.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <pwd.h>
|
|
|
|
extern int EXFUN(geteuid, (NOARGS));
|
|
|
|
|
|
/* Return the username of the caller.
|
|
If S is not NULL, it points to a buffer of at least L_cuserid bytes
|
|
into which the name is copied; otherwise, a static buffer is used. */
|
|
char *
|
|
DEFUN(cuserid, (s), char *s)
|
|
{
|
|
static char name[L_cuserid];
|
|
struct passwd *pwent = getpwuid(geteuid());
|
|
|
|
if (pwent == NULL)
|
|
{
|
|
if (s != NULL)
|
|
s[0] = '\0';
|
|
return NULL;
|
|
}
|
|
|
|
if (s == NULL)
|
|
s = name;
|
|
return strcpy(s, pwent->pw_name);
|
|
}
|