diff options
Diffstat (limited to 'Doc/lib/libos.tex')
-rw-r--r-- | Doc/lib/libos.tex | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex index 9673563..40e9573 100644 --- a/Doc/lib/libos.tex +++ b/Doc/lib/libos.tex @@ -296,6 +296,36 @@ Availability: \UNIX{}. \end{funcdesc} +For each of these \function{popen()} variants, if \var{bufsize} is +specified, it specifies the buffer size for the I/O pipes. +\var{mode}, if provided, should be the string \code{'b'} or +\code{'t'}; on Windows this is needed to determine whether the file +objects should be opened in binary or text mode. The default value +for \var{mode} is \code{'t'}. + +\begin{funcdesc}{popen2}{cmd\optional{, bufsize\optional{, mode}}} +Executes \var{cmd} as a sub-process. Returns the file objects +\code{(\var{child_stdin}, \var{child_stdout})}. +\versionadded{2.0} +\end{funcdesc} + +\begin{funcdesc}{popen3}{cmd\optional{, bufsize\optional{, mode}}} +Executes \var{cmd} as a sub-process. Returns the file objects +\code{(\var{child_stdin}, \var{child_stdout}, \var{child_stderr})}. +\versionadded{2.0} +\end{funcdesc} + +\begin{funcdesc}{popen4}{cmd\optional{, bufsize\optional{, mode}}} +Executes \var{cmd} as a sub-process. Returns the file objects +\code{(\var{child_stdin}, \var{child_stdout_and_stderr})}. +\versionadded{2.0} +\end{funcdesc} + +This functionality is also available in the \refmodule{popen2} module +using functions of the same names, but the return values of those +functions have a different order. + + \subsection{File Descriptor Operations \label{os-fd-ops}} These functions operate on I/O streams referred to |