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

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  Date : 2024-10-27T17:01:29
  

  doc: Add a module index.
  
  * doc/Makefile (undocumented-modules.texi): New rule.
  (%.info, %.html, %.dvi, %.pdf): Depend on undocumented-modules.texi.
  (mostlyclean): Remove also *.m and *.tmp.
  (force): New rule.
  * doc/*.texi: Add module index entries.
  * doc/*/*.texi: Likewise.
  

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• doc/posix-functions/access.texi

• @node access
  @subsection @code{access}
  @findex access
  
  POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/access.html}
  
  Gnulib module: access
  @mindex access
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  This function does not support the @code{X_OK} mode on some platforms:
  MSVC 14.
  @item
  This function does not reject trailing slashes on symlinks to non-directories
  on some platforms:
  Mac OS X 10.5.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  This function uses the effective id instead of the real id on some
  platforms:
  Cygwin 1.5.x.
  @end itemize
  
  Other problems of this function:
  @itemize
  @item
  There is an inherent race between calling this function and performing
  some action based on the results; you should think twice before trusting
  this function, especially in a set-uid or set-gid program.
  @item
  This function does not have an option for not following symbolic links
  (like @code{stat} versus @code{lstat}).  If you need this option, use
  the Gnulib module @code{faccessat} with the @code{AT_EACCESS} flag.
  @item
  On Solaris, for the root user, any file is @code{X_OK} even if the file
  does not have the @code{x} permission bit set.
  @item
  On native Windows, files whose basename does not contain a @samp{.}
  cannot be executed through @code{execlp} or @code{execvp}.  Nevertheless,
  this function may return true for such files.
  @item
  On Windows, different facilities for executing a program have different
  ways of finding an executable file, by trying various suffixes.  For
  example, @code{execlp} and @code{execvp} search for files with the
  suffixes @code{.com}, @code{.exe}, @code{.bat}, @code{.cmd}, when the
  file with the given file name does not exist.  Whereas @code{cmd.exe}
  searches according to the @code{PATHEXT} environment variable.  This
  function does not perform any search; it merely looks at the file with
  the given file name.
  @end itemize
  

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