posix_openpt.c

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Hash : b1fcec6d
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Date : 2025-09-10T23:22:53

Remove support for IRIX.

* all-modules: Update comments.
* build-aux/install-reloc: Likewise.
* build-aux/reloc-ldflags: Likewise.
* gnulib-tool: Likewise.
* gnulib-tool.py: Likewise.
* gnulib-tool.sh: Likewise.
* lib/aligned-malloc.h: Likewise.
* lib/boot-time.c: Likewise.
* lib/c32is-impl.h: Likewise.
* lib/c32srtombs-state.c: Likewise.
* lib/c32to-impl.h: Likewise.
* lib/c32width.c: Likewise.
* lib/errno.in.h: Likewise.
* lib/euidaccess.c: Likewise.
* lib/fbufmode.c: Likewise.
* lib/fenv-except-state-get.c: Likewise.
* lib/fenv-except-state-set.c: Likewise.
* lib/fenv-except-tracking-clear.c: Likewise.
* lib/fenv-except-tracking-set.c: Likewise.
* lib/fenv-except-tracking-test.c: Likewise.
* lib/fenv-except-trapping.c: Likewise.
* lib/fenv-round.c: Likewise.
* lib/fflush.c: Likewise.
* lib/fileblocks.c: Likewise.
* lib/forkpty.c: Likewise.
* lib/fpending.c: Likewise.
* lib/fpurge.c: Likewise.
* lib/freadable.c: Likewise.
* lib/freadahead.c: Likewise.
* lib/freading.c: Likewise.
* lib/freadptr.c: Likewise.
* lib/freadseek.c: Likewise.
* lib/fseeko.c: Likewise.
* lib/fseterr.c: Likewise.
* lib/fsusage.c: Likewise.
* lib/fwritable.c: Likewise.
* lib/fwriting.c: Likewise.
* lib/getdomainname.c: Likewise.
* lib/idpriv-drop.c: Likewise.
* lib/idpriv-droptemp.c: Likewise.
* lib/limits.in.h: Likewise.
* lib/mbrtoc16.c: Likewise.
* lib/mbrtoc32.c: Likewise.
* lib/mbsrtoc32s-state.c: Likewise.
* lib/mbsrtowcs-state.c: Likewise.
* lib/mbtowc-lock.h: Likewise.
* lib/minmax.h: Likewise.
* lib/netdb.in.h: Likewise.
* lib/pipe-filter-ii.c: Likewise.
* lib/posix_openpt.c: Likewise.
* lib/ptsname_r.c: Likewise.
* lib/readutmp.c: Likewise.
* lib/readutmp.h: Likewise.
* lib/resource-ext.h: Likewise.
* lib/safe-read.h: Likewise.
* lib/safe-write.h: Likewise.
* lib/save-cwd.c: Likewise.
* lib/stdbool.in.h: Likewise.
* lib/striconv.c: Likewise.
* lib/striconveh.c: Likewise.
* lib/termcap.h: Likewise.
* lib/terminfo.h: Likewise.
* lib/unistd.in.h: Likewise.
* lib/vasnprintf.c: Likewise.
* lib/wcrtomb.c: Likewise.
* lib/wcsrtombs-state.c: Likewise.
* m4/fenv-environment.m4: Likewise.
* m4/fenv-exceptions-state.m4: Likewise.
* m4/fenv-exceptions-tracking.m4: Likewise.
* m4/fenv-rounding.m4: Likewise.
* m4/fmod.m4: Likewise.
* m4/getdomainname.m4: Likewise.
* m4/getloadavg.m4: Likewise.
* m4/getopt.m4: Likewise.
* m4/hypot.m4: Likewise.
* m4/hypotf.m4: Likewise.
* m4/hypotl.m4: Likewise.
* m4/iconv.m4: Likewise.
* m4/intl-thread-locale.m4: Likewise.
* m4/largefile.m4: Likewise.
* m4/libdl.m4: Likewise.
* m4/locale-ja.m4: Likewise.
* m4/locale_h.m4: Likewise.
* m4/log.m4: Likewise.
* m4/log10.m4: Likewise.
* m4/log10f.m4: Likewise.
* m4/logf.m4: Likewise.
* m4/modf.m4: Likewise.
* m4/modff.m4: Likewise.
* m4/modfl.m4: Likewise.
* m4/pthread-rwlock.m4: Likewise.
* m4/semaphore.m4: Likewise.
* m4/socklen.m4: Likewise.
* m4/stdint.m4: Likewise.
* m4/strtod.m4: Likewise.
* m4/strtof.m4: Likewise.
* m4/strtold.m4: Likewise.
* modules/sigsegv: Likewise.
* posix-modules: Likewise.
* pygnulib/GLImport.py: Likewise.
* tests/init.sh: Likewise.
* tests/test-echo.sh: Likewise.
* tests/test-isatty.c: Likewise.
* tests/test-math-h.c: Likewise.
* tests/test-nonblocking-pipe.h: Likewise.
* tests/test-nonblocking-socket.h: Likewise.
* tests/test-strtod.h: Likewise.
* tests/test-strtof.h: Likewise.
* tests/test-strtold.h: Likewise.
* tests/test-vasnprintf.c: Likewise.
* tests/test-vasnwprintf.c: Likewise.

Download

lib/posix_openpt.c

/* Open the master side of a pseudo-terminal.
   Copyright (C) 2010-2025 Free Software Foundation, Inc.

   This file is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as
   published by the Free Software Foundation; either version 2.1 of the
   License, or (at your option) any later version.

   This file 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 Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser 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, Solaris 9,
     Cygwin 1.5.x, mingw, MSVC 9, Interix 3.5, BeOS.
   Among these:
     - AIX has /dev/ptc.
     - HP-UX 10..11, 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, 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 Solaris:  /dev/pty[p-r][0-9a-f]
   */

#endif

  return master;
}

Download

kc3-lang/gnulib/lib/posix_openpt.c

Commit

lib/posix_openpt.c