1996-09-27 06:29:02 -04:00
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<HTML><HEAD><TITLE>STk procedures - posix manual page</TITLE></HEAD>
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1998-04-10 06:59:06 -04:00
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<BR>
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1996-09-27 06:29:02 -04:00
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<BODY bgcolor = #ffffa0>
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<H2><IMG ALIGN=BOTTOM SRC="./Img/ManPageYellow.gif"> posix </H2>
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<I>Access to posix functions</I><P><IMG ALIGN=TOP SRC="./Img/line-red.gif">
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<H3><A NAME="M2">SYNOPSIS</A></H3>
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<P>
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<DL>
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1998-09-30 07:11:02 -04:00
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<DT><A NAME="M3">{<I>ERROR MANAGEMENT</I>}</A><DD>
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1996-09-27 06:29:02 -04:00
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<B>*errno*</B>
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<P>
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<P>
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<P>
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(<B>posix-perror</B> <I>str</I>)
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<P>
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1998-09-30 07:11:02 -04:00
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<DT><A NAME="M4">{<I>FILES AND DIRECTORIES</I>}</A><DD>
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1996-09-27 06:29:02 -04:00
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(<B>posix-stat</B> <I>filename</I>)
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<P>
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<P>
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<P>
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(<B>posix-stat->vector</B> <I>descr</I>)
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<P>
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<P>
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<P>
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(<B>posix-access </B><I>filename mode</I>)
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<P>
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<P>
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<P>
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(<B>posix-pipe</B>)
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<P>
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1998-09-30 07:11:02 -04:00
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<DT><A NAME="M5">{<I>TIME FUNCTIONS</I>}</A><DD>
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(<B>posix-time</B>)
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<P>
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<P>
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<P>
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(<B>posix-asctime</B>)
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<P>
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<P>
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(<B>posix-asctime</B> seconds)
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<P>
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<P>
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(<B>posix-ctime</B>)
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<P>
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<P>
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(<B>posix-ctime</B> <I>seconds</I>)
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<P>
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<P>
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(<B>posix-localtime</B> <I> seconds</I>)
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<P>
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<P>
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(<B>posix-gmtime</B> <I>seconds</I>)
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<P>
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<P>
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(<B>posix-mktime</B> <I>time</I>)
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<P>
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<P>
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(<B>posix-tm->vector</B> <I>time</I>)
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<P>
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<P>
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(<B>vector->posix-tm</B> <I>vect</I>)
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<P>
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<P>
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(<B>posix-strftime</B> <I>format</I>)
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<P>
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(<B>posix-strftime</B> <I>format time</I>)
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<P>
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1998-09-30 07:11:02 -04:00
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<DT><A NAME="M6">{<I>PROCESSES FUNCTIONS</I>}</A><DD>
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1996-09-27 06:29:02 -04:00
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<P>
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<P>
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(<B>posix-fork</B>)
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<P>
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<P>
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(<B>posix-wait</B>)
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<P>
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1998-09-30 07:11:02 -04:00
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<DT><A NAME="M7">{<I>SYSTEM INFORMATIONS</I>}</A><DD>
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1996-09-27 06:29:02 -04:00
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<P>
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<P>
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(<B>posix-uname</B>)
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<P>
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<P>
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(<B>posix-host</B>)
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<P>
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<P>
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(<B>posix-domain</B>)
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<P>
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</DL>
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<H3><A NAME="M8">DESCRIPTION</A></H3>
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The functions of the posix library must be loaded before use with:
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<PRE>(require "posix")</PRE>
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The functions will not be described here completely. For full details
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about a functions and its behaviour, look at the corresponding Unix
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manual page or to the POSIX.1 document.
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<P>
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<DL>
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1998-09-30 07:11:02 -04:00
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<DT><A NAME="M9">{<I>ERROR MANAGEMENT</I>}</A><DD>
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1996-09-27 06:29:02 -04:00
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</DL>
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<P>
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<P>
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<DL>
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<DT><A NAME="M10"><B>*errno*</B></A><DD>
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is a variable which always contains the error number of last
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encountered error. It is equivalent to the errno POSIX.1 variable.
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<P>
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<DT><A NAME="M11">(<B>posix-perror</B> <I>str</I>)</A><DD>
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produces a message on the standard error output, describing the last
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error encountered during a call to a system or library function. The
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<I>str</I> parameter is an identifying string which will be printed before
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the error message.
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See <B>perror(3)</B>.
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<P>
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1998-09-30 07:11:02 -04:00
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<DT><A NAME="M12">{<I>FILES AND DIRECTORIES</I>}</A><DD>
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1996-09-27 06:29:02 -04:00
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</DL>
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<P>
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<P>
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<DL>
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<DT><A NAME="M13">(<B>posix-stat</B> <I>filename</I>)</A><DD>
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returns a C structure which contains a description of <I>filename</I>). This
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structure is not viewable by itself. Use, <B>posix-stat->vector</B>
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to access its content in Scheme.If <I>filename</I> does not exists, this procedure
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returns <I>#f</I>.
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<P>
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1998-09-30 07:11:02 -04:00
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<DT><A NAME="M14">{(<B>posix-stat->vector</B>} <I>descr</I>)</A><DD>
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1996-09-27 06:29:02 -04:00
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transforms a file description sructure obtained by <B>posix-stat</B> to a Scheme
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vector. The components of the vector are given here with their index:
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<P>
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</DL>
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<PRE>st_dev (0) st_ino (1)
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st_mode (2) st_nlink (3)
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st_uid (4) st_gid (5)
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st_size (6) st_atime (7)
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st_mtime (8) st_ctime (9)</PRE>
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<PRE>See <B>fstat(2)</B> for details on the semantic of this fields.</PRE>
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<P>
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<DL>
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<DT><A NAME="M15">(<B>posix-access </B><I>filename mode</I>)</A><DD>
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checks whether the interpreter is allowed to read, write, execute or test for
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existence of <I>filename</I>. <I>Mode</I> must be one of the following constants:
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<B>|R_OK|</B>, <B>|W_OK|</B>, <B>|X_OK|</B> or <B>|F_OK|</B>.
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If <I>filename</I> does not exit, this function returns <B>#f</B>.
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See <B>access(2)</B> for details.
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<P>
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<DT><A NAME="M16">(<B>posix-pipe</B>)</A><DD>
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returns a pair of Scheme ports associated to a
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pipe inode. If a pipe cannot be created, this function returns
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<B>#f</B>.
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<P>
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</DL>
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<P>
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<B>TO BE CONTINUED</B>
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1998-04-10 06:59:06 -04:00
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<P><IMG ALIGN=TOP SRC="./Img/line-red.gif"><P>
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1996-09-27 06:29:02 -04:00
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<A HREF=./STk-hlp.html><IMG ALIGN=BOTTOM SRC="./Img/RefBookYellow.gif"> Back to the <B>STk</B> main page</A>
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</BODY></HTML>
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