58e071515a
(libm-routines): Construct this from those. (calls): New variable. (routines): Construct this from it. * resolv/res_debug.c: Add missing #include <ctype.h>. * sysdeps/unix/getlogin.c: Must pass struct utmp ptr to getutline_r. * sysdeps/unix/getlogin_r.c: Likewise. * sysdeps/libm-ieee754/w_hypotl.c: Fix typo. * sysdeps/libm-ieee754/w_cabsl.c: __cabsl_complex -> __cabs_complexl * math/Makefile (long-m-routines): Define recursive variable as $(long-m-$(long-double-fcts)). (long-m-yes): Put list of routines here. (long-c-routines, long-c-yes): Likewise. * sysdeps/unix/sysv/linux/schedbits.h: File removed. * sysdeps/i386/Makefile (long-double-fcts): New variable, set to yes. * sysdeps/m68k/Makefile: Likewise. * math/Makefile [$(long-double-fcts)!=yes] (CPPFLAGS): Append -DNO_LONG_DOUBLE.
76 lines
2 KiB
C
76 lines
2 KiB
C
/* Copyright (C) 1991, 1992, 1996 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 <errno.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <limits.h>
|
|
#include <fcntl.h>
|
|
|
|
#include <utmp.h>
|
|
|
|
/* Return the login name of the user, or NULL if it can't be determined.
|
|
The returned pointer, if not NULL, is good only until the next call. */
|
|
|
|
char *
|
|
DEFUN_VOID(getlogin)
|
|
{
|
|
char tty_pathname[2 + 2 * NAME_MAX];
|
|
char *real_tty_path = tty_pathname;
|
|
char *result = NULL;
|
|
static struct utmp_data utmp_data;
|
|
struct utmp *ut, line;
|
|
|
|
{
|
|
int err = 0;
|
|
int d = __open ("/dev/tty", 0);
|
|
if (d < 0)
|
|
return NULL;
|
|
|
|
if (ttyname_r (d, real_tty_path, sizeof (tty_pathname)) < 0)
|
|
err = errno;
|
|
(void) close (d);
|
|
|
|
if (errno != 0)
|
|
{
|
|
errno = err;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
real_tty_path += 5; /* Remove "/dev/". */
|
|
|
|
setutent_r (&utmp_data);
|
|
strncpy (line.ut_line, real_tty_path, sizeof line.ut_line);
|
|
if (getutline_r (&line, &ut, &utmp_data) < 0)
|
|
{
|
|
if (errno == ESRCH)
|
|
/* The caller expects ENOENT if nothing is found. */
|
|
errno = ENOENT;
|
|
result = NULL;
|
|
}
|
|
else
|
|
result = ut->ut_line;
|
|
|
|
endutent_r (&utmp_data);
|
|
|
|
return result;
|
|
}
|