kc3-lang/gnulib/doc/posix-functions/fcntl.texi

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• Hash : 93ce02b4
  Author :
  Date : 2014-05-31T14:07:57
  

  dup2, fcntl, fcntl-h: port to AIX 7.1
  
  This fixes some porting problems discovered when testing the latest
  grep snapshot on AIX 7.1.  I don't think if fixes any bugs
  in grep but it could be important for other applications.
  * doc/posix-functions/dup2.texi:
  * doc/posix-functions/fcntl.texi:
  * doc/posix-headers/fcntl.texi:
  Document AIX bugs.
  * lib/fcntl.in.h (O_CLOEXEC, O_NOFOLLOW, O_TTY_INIT) [_AIX]:
  Define to 0 if outside 'int' range.
  * m4/dup2.m4 (gl_FUNC_DUP2):
  * m4/fcntl.m4 (gl_FUNC_FCNTL):
  Check for getdtablesize.  If it's available, test a value just
  outside its range instead of testing 1000000.  When cross-compiling,
  guess that AIX will fail this improved test.
  

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• doc/posix-functions/fcntl.texi

• @node fcntl
  @section @code{fcntl}
  @findex fcntl
  
  POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/fcntl.html}
  
  Gnulib module: fcntl
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  This function is missing on some platforms:
  mingw, MSVC 9.
  
  @item
  This function does not support @code{F_DUPFD_CLOEXEC} on some
  platforms:
  glibc with Linux kernels before 2.6.24,
  Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, AIX 7.1, HP-UX 11,
  IRIX 6.5, OSF/1 5.1, Solaris 11 2010-11, Cygwin 1.7.1, Interix 3.5,
  BeOS.
  Note that the gnulib replacement code is functional but not atomic.
  
  @item
  The @code{F_DUPFD} action of this function does not reject
  out-of-range targets properly on some platforms:
  AIX 7.1, Cygwin 1.5.x, Haiku.
  
  @item
  The @code{F_DUPFD} action of this function mistakenly clears
  FD_CLOEXEC on the source descriptor on some platforms:
  Haiku.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  The replacement function does not support @code{F_SETFD},
  @code{F_GETFL}, @code{F_SETFL}, @code{F_GETOWN}, @code{F_SETOWN},
  @code{F_GETLK}, @code{F_SETLK}, and @code{F_SETLKW} on some platforms:
  mingw, MSVC 9.
  @end itemize
  

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