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

• @node write
  @subsection @code{write}
  @findex write
  
  POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/write.html}
  
  Gnulib module: write, nonblocking, sigpipe
  @mindex write
  @mindex nonblocking
  @mindex sigpipe
  
  Portability problems fixed by Gnulib module @code{write}:
  @itemize
  @item
  This function is declared in a different header file (namely, @code{<io.h>})
  on some platforms:
  mingw, MSVC 14.
  @item
  This function crashes when invoked with invalid arguments on some platforms:
  MSVC 14.
  @end itemize
  
  Portability problems fixed by Gnulib module @code{stdio}, together with module @code{nonblocking}:
  @itemize
  @item
  When writing to a non-blocking pipe whose buffer is full, this function fails
  with @code{errno} being set to @code{ENOSPC} instead of @code{EAGAIN} on some
  platforms:
  mingw, MSVC 14.
  @item
  When writing to a non-blocking pipe on which no reader is currently waiting
  an amount of bytes that exceeds the pipe buffer's size, then---even if the
  pipe's buffer is empty---this function fails, instead of performing a partial
  write into the pipe buffer, on some platforms:
  mingw, MSVC 14.
  @end itemize
  
  Portability problems fixed by Gnulib module @code{stdio}, together with module @code{sigpipe}:
  @itemize
  @item
  When writing to a pipe with no readers, this function fails with error
  @code{EINVAL}, instead of obeying the current @code{SIGPIPE} handler, on
  some platforms:
  mingw, MSVC 14.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  This function may fail with error @code{EINTR}, even in programs that don't
  install any signal handlers, on some platforms:
  macOS 14.
  @end itemize
  
  @mindex safe-write
  For handling @code{EINTR}, Gnulib provides a module @samp{safe-write} with a
  function @code{safe_write}.
  

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