kc3-lang/gnulib/lib/dup.c

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• Hash : d4c637e5
  Author :
  Date : 2020-08-15T16:54:17
  

  Support compiling without -loldnames on native Windows.
  
  * m4/gnulib-common.m4 (GL_MDA_DEFINES, _GL_MDA_DEFINES): New macros.
  * m4/chown.m4 (AC_FUNC_CHOWN): In the test programs, use GL_MDA_DEFINES.
  (gl_FUNC_CHOWN, gl_FUNC_CHOWN_FOLLOWS_SYMLINK): Likewise.
  * m4/dup.m4 (gl_FUNC_DUP): Likewise.
  * m4/dup2.m4 (gl_FUNC_DUP2): Likewise.
  * m4/fchdir.m4 (gl_FUNC_FCHDIR): Likewise.
  * m4/fchmodat.m4 (gl_FUNC_FCHMODAT): Likewise.
  * m4/fchownat.m4 (gl_FUNC_FCHOWNAT_EMPTY_FILENAME_BUG): Likewise.
  * m4/fcntl-o.m4 (gl_FCNTL_O_FLAGS): Likewise.
  * m4/fcntl.m4 (gl_FUNC_FCNTL): Likewise.
  * m4/fdopen.m4 (gl_FUNC_FDOPEN): Likewise.
  * m4/fdopendir.m4 (gl_FUNC_FDOPENDIR): Likewise.
  * m4/fflush.m4 (gl_FUNC_FFLUSH_STDIN): Likewise.
  * m4/fopen.m4 (gl_FUNC_FOPEN_GNU): Likewise.
  * m4/freopen.m4 (gl_FUNC_FREOPEN): Likewise.
  * m4/futimens.m4 (gl_FUNC_FUTIMENS): Likewise.
  * m4/getcwd-abort-bug.m4 (gl_FUNC_GETCWD_ABORT_BUG): Likewise.
  * m4/getcwd-path-max.m4 (gl_FUNC_GETCWD_PATH_MAX): Likewise.
  * m4/getcwd.m4 (gl_FUNC_GETCWD_NULL, gl_FUNC_GETCWD_SIGNATURE):
  Likewise.
  * m4/getdtablesize.m4 (gl_FUNC_GETDTABLESIZE): Likewise.
  * m4/linkat.m4 (gl_FUNC_LINKAT): Likewise.
  * m4/lseek.m4 (gl_FUNC_LSEEK): Likewise.
  * m4/mkdir.m4 (gl_FUNC_MKDIR): Likewise.
  * m4/mkstemp.m4 (gl_FUNC_MKSTEMP): Likewise.
  * m4/mktime.m4 (gl_FUNC_MKTIME_WORKS): Likewise.
  * m4/open-slash.m4 (gl_OPEN_TRAILING_SLASH_BUG): Likewise.
  * m4/poll.m4 (gl_FUNC_POLL): Likewise.
  * m4/posix_spawn.m4 (gl_POSIX_SPAWN_WORKS): Likewise.
  * m4/pread.m4 (gl_FUNC_PREAD): Likewise.
  * m4/pselect.m4 (gl_FUNC_PSELECT): Likewise.
  * m4/pthread_sigmask.m4 (gl_FUNC_PTHREAD_SIGMASK): Likewise.
  * m4/ptsname_r.m4 (gl_PREREQ_PTSNAME_R): Likewise.
  * m4/putenv.m4 (gl_FUNC_PUTENV): Likewise.
  * m4/pwrite.m4 (gl_FUNC_PWRITE): Likewise.
  * m4/rename.m4 (gl_FUNC_RENAME): Likewise.
  * m4/rmdir-errno.m4 (gl_FUNC_RMDIR_NOTEMPTY): Likewise.
  * m4/rmdir.m4 (gl_FUNC_RMDIR): Likewise.
  * m4/select.m4 (gl_FUNC_SELECT): Likewise.
  * m4/setenv.m4 (gl_FUNC_UNSETENV): Likewise.
  * m4/strncat.m4 (gl_FUNC_STRNCAT): Likewise.
  * m4/ttyname_r.m4 (gl_FUNC_TTYNAME_R): Likewise.
  * m4/unlink-busy.m4 (gl_FUNC_UNLINK_BUSY_TEXT): Likewise.
  * m4/unlink.m4 (gl_FUNC_UNLINK): Likewise.
  * m4/utimens.m4 (gl_UTIMENS): Likewise.
  * m4/utimensat.m4 (gl_FUNC_UTIMENSAT): Likewise.
  * m4/utimes.m4 (gl_FUNC_UTIMES): Likewise.
  * m4/canonicalize.m4 (gl_CANONICALIZE_LGPL): On native Windows, don't
  test for getcwd.
  * m4/utime.m4 (gl_FUNC_UTIME): On native Windows, don't test for utime.
  * m4/wcsdup.m4 (gl_FUNC_WCSDUP): To test for wcsdup, use a test program
  with GL_MDA_DEFINES.
  * lib/c++defs.h (_GL_CXXALIAS_MDA): New macro.
  * lib/fcntl.in.h (creat, open):  On native Windows, use the underscore-
  prefixed symbol.
  * lib/search.in.h (lfind, lsearch): Likewise.
  * lib/stdio.in.h (fcloseall, fdopen, fileno, getw, putw, tempnam):
  Likewise.
  * lib/stdlib.in.h (ecvt, fcvt, gcvt, mktemp, putenv): Likewise.
  * lib/string.in.h (memccpy, strdup): Likewise.
  * lib/sys_stat.in.h (chmod, umask): Likewise.
  * lib/time.in.h (tzset): Likewise.
  * lib/unistd.in.h (access, chdir, close, dup, dup2, execl, execle,
  execlp, execv, execve, execvp, execvpe, getcwd, getpid, isatty, lseek,
  read, rmdir, swab, unlink, write): Likewise.
  * lib/utime.in.h (utime): Likewise.
  * lib/wchar.in.h (wcsdup): Likewise.
  * lib/math.in.h (j0, j1, jn, y0, y1, yn):  Likewise.
  (isfinite, isinf, isnan, signbit): On native Windows, don't define as an
  rpl_-prefixed macro.
  * lib/canonicalize-lgpl.c (__getcwd): On native Windows, use _getcwd.
  * lib/close.c (close_nothrow): On native Windows, use _close.
  * lib/creat.c (orig_creat): On native Windows, use _creat.
  * lib/dup.c (dup_nothrow): On native Windows, use _dup.
  * lib/dup2.c (dup2_nothrow): Use _dup2.
  * lib/fdopen.c (fdopen_nothrow): On native Windows, use _fdopen.
  * lib/getcwd-lgpl.c: On native Windows, use _getcwd.
  * lib/getcwd.c (getcwd_nothrow): Use _getcwd also on mingw.
  * lib/open.c (orig_open): On native Windows, use _open.
  * lib/read.c (read_nothrow): Use _read.
  * lib/rmdir.c: On native Windows, use _rmdir.
  * lib/unlink.c: On native Windows, use _unlink.
  * lib/write.c (write_nothrow): Use _write.
  * lib/sys_select.in.h (close): With clang, don't attach a warning on an
  undefined symbol.
  * lib/sys_socket.in.h (close): Likewise.
  * lib/sys_time.in.h (close): Likewise.
  * tests/test-spawn-pipe-child.c: On native Windows, use _fdopen.
  

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• lib/dup.c

• /* Duplicate an open file descriptor.
  
     Copyright (C) 2011-2020 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 <unistd.h>
  
  #include <errno.h>
  
  #if HAVE_MSVC_INVALID_PARAMETER_HANDLER
  # include "msvc-inval.h"
  #endif
  
  #undef dup
  
  #if defined _WIN32 && !defined __CYGWIN__
  # if HAVE_MSVC_INVALID_PARAMETER_HANDLER
  static int
  dup_nothrow (int fd)
  {
    int result;
  
    TRY_MSVC_INVAL
      {
        result = _dup (fd);
      }
    CATCH_MSVC_INVAL
      {
        result = -1;
        errno = EBADF;
      }
    DONE_MSVC_INVAL;
  
    return result;
  }
  # else
  #  define dup_nothrow _dup
  # endif
  #elif defined __KLIBC__
  # include <fcntl.h>
  # include <sys/stat.h>
  
  # include <InnoTekLIBC/backend.h>
  
  static int
  dup_nothrow (int fd)
  {
    int dupfd;
    struct stat sbuf;
  
    dupfd = dup (fd);
    if (dupfd == -1 && errno == ENOTSUP \
        && !fstat (fd, &sbuf) && S_ISDIR (sbuf.st_mode))
      {
        char path[_MAX_PATH];
  
        /* Get a path from fd */
        if (!__libc_Back_ioFHToPath (fd, path, sizeof (path)))
          dupfd = open (path, O_RDONLY);
      }
  
    return dupfd;
  }
  #else
  # define dup_nothrow dup
  #endif
  
  int
  rpl_dup (int fd)
  {
    int result = dup_nothrow (fd);
  #if REPLACE_FCHDIR
    if (result >= 0)
      result = _gl_register_dup (fd, result);
  #endif
    return result;
  }
  

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