posix_openpt.c

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Hash : 44b65c48
Author :
Date : 2018-05-03T23:09:42

Simplify code. Drop support for Borland C++ on Windows.

Reported by Gisle Vanem <gisle.vanem@gmail.com>.

* lib/accept4.c: Simplify 'defined _WIN32 || defined __WIN32__' to just
'defined _WIN32'.
* lib/canonicalize-lgpl.c: Likewise.
* lib/classpath.c: Likewise.
* lib/clean-temp.c: Likewise.
* lib/csharpexec.c: Likewise.
* lib/ctime.c: Likewise.
* lib/dosname.h: Likewise.
* lib/dup2.c: Likewise.
* lib/errno.in.h: Likewise.
* lib/error.c: Likewise.
* lib/euidaccess.c: Likewise.
* lib/execute.c: Likewise.
* lib/fcntl.in.h: Likewise.
* lib/fcntl.c: Likewise.
* lib/filename.h: Likewise.
* lib/findprog.c: Likewise.
* lib/flock.c: Likewise.
* lib/fopen.c: Likewise.
* lib/freopen.c: Likewise.
* lib/fstat.c: Likewise.
* lib/fsync.c: Likewise.
* lib/gc-gnulib.c: Likewise.
* lib/get-rusage-data.c: Likewise.
* lib/getaddrinfo.c: Likewise.
* lib/getdelim.c: Likewise.
* lib/getdtablesize.c: Likewise.
* lib/gethostname.c: Likewise.
* lib/getlogin.c: Likewise.
* lib/getlogin_r.c: Likewise.
* lib/getopt.c: Likewise.
* lib/getpagesize.c: Likewise.
* lib/getpass.c: Likewise.
* lib/getrusage.c: Likewise.
* lib/gettimeofday.c: Likewise.
* lib/glob.c: Likewise.
* lib/inttypes.in.h: Likewise.
* lib/isapipe.c: Likewise.
* lib/javaexec.c: Likewise.
* lib/link.c: Likewise.
* lib/localcharset.c: Likewise.
* lib/localename.h: Likewise.
* lib/localename.c: Likewise.
* lib/localtime.c: Likewise.
* lib/lseek.c: Likewise.
* lib/mbsinit.c: Likewise.
* lib/mkdir.c: Likewise.
* lib/msvc-nothrow.h: Likewise.
* lib/nanosleep.c: Likewise.
* lib/nl_langinfo.c: Likewise.
* lib/nonblocking.c: Likewise.
* lib/nproc.c: Likewise.
* lib/open.c: Likewise.
* lib/openpty.c: Likewise.
* lib/pathmax.h: Likewise.
* lib/pipe-filter-aux.c: Likewise.
* lib/pipe-filter-gi.c: Likewise.
* lib/pipe-filter-ii.c: Likewise.
* lib/pipe.c: Likewise.
* lib/pipe2.c: Likewise.
* lib/poll.c: Likewise.
* lib/popen.c: Likewise.
* lib/posix_openpt.c: Likewise.
* lib/printf-parse.c: Likewise.
* lib/progreloc.c: Likewise.
* lib/putenv.c: Likewise.
* lib/read.c: Likewise.
* lib/relocatable.c: Likewise.
* lib/rename.c: Likewise.
* lib/same-inode.h: Likewise.
* lib/secure_getenv.c: Likewise.
* lib/select.c: Likewise.
* lib/sethostname.c: Likewise.
* lib/setlocale.c: Likewise.
* lib/sigaction.c: Likewise.
* lib/sigprocmask.c: Likewise.
* lib/sleep.c: Likewise.
* lib/spawn-pipe.h: Likewise.
* lib/spawn-pipe.c: Likewise.
* lib/spawni.c: Likewise.
* lib/stat-time.h: Likewise.
* lib/stat-w32.c: Likewise.
* lib/stat.c: Likewise.
* lib/stdio.in.h: Likewise.
* lib/stdio-impl.h: Likewise.
* lib/stdio-read.c: Likewise.
* lib/stdio-write.c: Likewise.
* lib/stdlib.in.h: Likewise.
* lib/strerror_r.c: Likewise.
* lib/strftime-fixes.c: Likewise.
* lib/sys_stat.in.h: Likewise.
* lib/sys_types.in.h: Likewise.
* lib/sys_wait.in.h : Likewise.
* lib/system-quote.h: Likewise.
* lib/system-quote.c: Likewise.
* lib/tmpdir.c: Likewise.
* lib/tzset.c: Likewise.
* lib/uname.c: Likewise.
* lib/unistd.in.h: Likewise.
* lib/utime.in.h: Likewise.
* lib/utime.c: Likewise.
* lib/utimecmp.c: Likewise.
* lib/utimens.c: Likewise.
* lib/vasnprintf.c: Likewise.
* lib/vma-iter.h: Likewise.
* lib/vma-iter.c: Likewise.
* lib/wait-process.c: Likewise.
* lib/wcsftime.c: Likewise.
* lib/wctype.in.h: Likewise.
* lib/write.c: Likewise.
* tests/nap.h: Likewise.
* tests/test-cloexec.c: Likewise.
* tests/test-dup-safer.c: Likewise.
* tests/test-dup2.c: Likewise.
* tests/test-dup3.c: Likewise.
* tests/test-fcntl.c: Likewise.
* tests/test-get-rusage-data.c: Likewise.
* tests/test-getaddrinfo.c: Likewise.
* tests/test-getlogin.h: Likewise.
* tests/test-isatty.c: Likewise.
* tests/test-localename.c: Likewise.
* tests/test-mbrtowc-w32.c: Likewise.
* tests/test-nonblocking.c: Likewise.
* tests/test-nonblocking-pipe-main.c: Likewise.
* tests/test-nonblocking-socket-main.c: Likewise.
* tests/test-nonblocking-socket.h: Likewise.
* tests/test-pipe.c: Likewise.
* tests/test-pipe2.c: Likewise.
* tests/test-poll.c: Likewise.
* tests/test-pthread_sigmask1.c: Likewise.
* tests/test-select.h: Likewise.
* tests/test-sethostname2.c: Likewise.
* tests/test-sigprocmask.c: Likewise.
* tests/test-spawn-pipe-child.c: Likewise.
* tests/test-stat-time.c: Likewise.
* tests/test-system-quote-main.c: Likewise.
* tests/test-utimens-common.h: Likewise.
* tests/test-wcrtomb-w32.c: Likewise.
* m4/csharpexec.m4 (gt_CSHARPEXEC): Likewise.
* m4/getcwd.m4 (gl_FUNC_GETCWD_NULL): Likewise.
* m4/javacomp.m4 (gt_JAVACOMP): Likewise.
* m4/javaexec.m4 (gt_JAVAEXEC): Likewise.
* m4/locale-ar.m4 (gt_LOCALE_AR): Likewise.
* m4/locale-fr.m4 (gt_LOCALE_FR, gt_LOCALE_FR_UTF8): Likewise.
* m4/locale-ja.m4 (gt_LOCALE_JA): Likewise.
* m4/locale-tr.m4 (gt_LOCALE_TR_UTF8): Likewise.
* m4/locale-zh.m4 (gt_LOCALE_ZH_CN): Likewise.
* m4/malloc.m4 (gl_CHECK_MALLOC_POSIX): Likewise.
* m4/nocrash.m4 (GL_NOCRASH): Likewise.
* m4/pathmax.m4 (gl_PATHMAX_SNIPPET): Likewise.
* m4/ptsname_r.m4 (gl_PREREQ_PTSNAME_R): Likewise.
* m4/stdio_h.m4 (gl_STDIO_H): Likewise.
* m4/tmpfile.m4 (gl_FUNC_TMPFILE): Likewise.
* m4/unistd_h.m4 (gl_UNISTD_H): Likewise.

Download

lib/posix_openpt.c

/* Open the master side of a pseudo-terminal.
   Copyright (C) 2010-2018 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

#include <config.h>

/* Specification.  */
#include <stdlib.h>

#include <errno.h>
#include <fcntl.h>
#if defined __OpenBSD__
# include <sys/ioctl.h>
# include <sys/tty.h>
#endif

/* posix_openpt() is already provided on
     glibc >= 2.2.1 (but is a stub on GNU/Hurd),
     Mac OS X >= 10.4,
     FreeBSD >= 5.1 (lived in src/lib/libc/stdlib/grantpt.c before 8.0),
     NetBSD >= 3.0,
     AIX >= 5.2, HP-UX >= 11.31, Solaris >= 10, Cygwin >= 1.7.
   Thus, this replacement function is compiled on
     Mac OS X 10.3, OpenBSD 4.9, Minix 3.1.8,
     AIX 5.1, HP-UX 11.23, IRIX 6.5, OSF/1 5.1, Solaris 9,
     Cygwin 1.5.x, mingw, MSVC 9, Interix 3.5, BeOS.
   Among these:
     - AIX has /dev/ptc.
     - HP-UX 10..11, IRIX 6.5, OSF/1 5.1, Solaris 2.6..9, Cygwin 1.5
       have /dev/ptmx.
     - HP-UX 10..11 also has /dev/ptym/clone, but this should not be needed.
     - OpenBSD 4.9 has /dev/ptm and the PTMGET ioctl.
     - Minix 3.1.8 have a list of pseudo-terminal devices in /dev.
     - On native Windows, there are no ttys at all.  */

int
posix_openpt (int flags)
{
  int master;

#ifdef _AIX /* AIX */

  master = open ("/dev/ptc", flags);

#elif defined _WIN32 && !defined __CYGWIN__ /* mingw */

  /* Mingw lacks pseudo-terminals altogether.  */
  master = -1;
  errno = ENOSYS;

#elif defined __OpenBSD__

  /* On OpenBSD, master and slave of a pseudo-terminal are allocated together,
     by opening /dev/ptm and applying the PTMGET ioctl to it.  */
  int fd;
  struct ptmget data;

  fd = open (PATH_PTMDEV, O_RDWR);
  if (fd >= 0)
    {
      if (ioctl (fd, PTMGET, &data) >= 0)
        {
          master = data.cfd;
          close (data.sfd);
          close (fd);
        }
      else
        {
          int saved_errno = errno;
          close (fd);
          errno = saved_errno;
          master = -1;
        }
    }
  else
    master = -1;

#else /* Mac OS X, Minix, HP-UX, IRIX, OSF/1, Solaris 9, Cygwin 1.5 */

  /* Most systems that lack posix_openpt() have /dev/ptmx.  */
  master = open ("/dev/ptmx", flags);

  /* If all this does not work, we could try to open, one by one:
     - On Mac OS X: /dev/pty[p-w][0-9a-f]
     - On *BSD:     /dev/pty[p-sP-S][0-9a-v]
     - On Minix:    /dev/pty[p-q][0-9a-f]
     - On AIX:      /dev/ptyp[0-9a-f]
     - On HP-UX:    /dev/pty[p-r][0-9a-f]
     - On OSF/1:    /dev/pty[p-q][0-9a-f]
     - On Solaris:  /dev/pty[p-r][0-9a-f]
   */

#endif

  return master;
}

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kc3-lang/gnulib/lib/posix_openpt.c

Commit

lib/posix_openpt.c