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1998-09-21 10:00 Ulrich Drepper <drepper@cygnus.com> * string/bits/string2.h: Add mempcpy optimization. * sysdeps/generic/mempcpy.c: Undefined __mempcpy. * intl/localealias.c: Define mempcpy only if not already defined. * sysdeps/i386/i486/bits/string.h: Define ffsl only if not already defined. 1998-09-20 10:48 -0400 Zack Weinberg <zack@rabi.phys.columbia.edu> * csu/abi-note.S: Emit the note directly instead of defining a preprocessor macro that's only used once. Don't include sysdep.h. * abi-tags: Generalize Solaris entry. 1998-09-18 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/bsd/getpt.c (__libc_ptyname1, __libc_ptyname2): Change to array to avoid runtime relocation. * sysdeps/unix/sysv/linux/ptsname.c: Update declarations. 1998-09-21 12:22 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * malloc/Makefile ($(objpfx)libmcheck.a): Fix use of $(LN_S). * math/Makefile ($(objpfx)libieee.a): Likewise. 1998-09-21 Ulrich Drepper <drepper@cygnus.com> * sysdeps/generic/getpt.c: Fix order of argument to weak_alias. Patch by John Tobey <jtobey@banta-im.com>.
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/* Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <unistd.h>
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/* Prefix for master pseudo terminal nodes. */
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#define _PATH_PTY "/dev/pty"
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/* Letters indicating a series of pseudo terminals. */
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#ifndef PTYNAME1
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#define PTYNAME1 "pqrsPQRS"
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#endif
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const char __libc_ptyname1[] = PTYNAME1;
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/* Letters indicating the position within a series. */
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#ifndef PTYNAME2
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#define PTYNAME2 "0123456789abcdefghijklmnopqrstuv";
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#endif
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const char __libc_ptyname2[] = PTYNAME2;
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/* Open a master pseudo terminal and return its file descriptor. */
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int
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__getpt (void)
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{
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char buf[sizeof (_PATH_PTY) + 2];
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const char *p, *q;
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char *s;
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s = __mempcpy (buf, _PATH_PTY, sizeof (_PATH_PTY) - 1);
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/* s[0] and s[1] will be filled in the loop. */
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s[2] = '\0';
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for (p = __libc_ptyname1; *p != '\0'; ++p)
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{
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s[0] = *p;
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for (q = __libc_ptyname2; *q != '\0'; ++q)
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{
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int fd;
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s[1] = *q;
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fd = __open (buf, O_RDWR);
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if (fd != -1)
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{
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if (__isatty (fd))
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return fd;
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__close (fd);
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continue;
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}
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if (errno != EIO)
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return -1;
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}
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}
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__set_errno (ENFILE);
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return -1;
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}
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weak_alias (__getpt, getpt)
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