From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/posix/cuserid.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 sysdeps/posix/cuserid.c (limited to 'sysdeps/posix/cuserid.c') diff --git a/sysdeps/posix/cuserid.c b/sysdeps/posix/cuserid.c new file mode 100644 index 0000000..b874e90 --- /dev/null +++ b/sysdeps/posix/cuserid.c @@ -0,0 +1,46 @@ +/* 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 +#include +#include +#include + +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); +} -- cgit v1.1