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authorTobias Klauser <tklauser@distanz.ch>2008-01-27 11:37:44 +0100
committerTobias Klauser <tklauser@xenon.tklauser.home>2008-01-27 11:37:44 +0100
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+<TITLE>pathconf</TITLE>
+<body bgcolor="#ffffcc">
+<hr>
+<pre>
+
+
+
+<h3>FPATHCONF(3) Linux Programmer's Manual FPATHCONF(3)
+</h3>
+
+<h3>NAME
+</h3> fpathconf, pathconf - get configuration values for files
+
+<h3>SYNOPSIS
+</h3> #include &lt;unistd.h&gt;
+
+ long fpathconf(int filedes, int name);
+ long pathconf(char *path, int name);
+
+<h3>DESCRIPTION
+</h3> fpathconf() gets a value for the configuration option name
+ for the open file descriptor filedes.
+
+ pathconf() gets a value for configuration option name for
+ the file name path.
+
+ The corresponding macros defined in &lt;unistd.h&gt; minimum
+ values; if an application wants to take advantage of val-
+ ues which may change, a call to fpathconf() or pathconf()
+ can be made, which may yield more liberal results.
+
+ Setting name equal to one of the following constants
+ returns the following configuration options:
+
+ _PC_LINK_MAX
+ returns the maximum number of links to the file.
+ If filedes or path refer to a directory, then the
+ value applies to the whole directory. The corre-
+ sponding macro is _POSIX_LINK_MAX.
+
+ _PC_MAX_CANON
+ returns the maximum length of a formatted input
+ line, where filedes or path must refer to a termi-
+ nal. The corresponding macro is _POSIX_MAX_CANON.
+
+ _PC_MAX_INPUT
+ returns the maximum length of an input line, where
+ filedes or path must refer to a terminal. The cor-
+ responding macro is _POSIX_MAX_INPUT.
+
+ _PC_NAME_MAX
+ returns the maximum length of a filename in the
+ directory path or filedes. the process is allowed
+ to create. _POSIX_MAX_.
+
+ _PC_PATH_MAX
+ returns the maximum length of a relative pathname
+ when path or filedes is the current working direc-
+ tory. The corresponding macro is _POSIX_PATH_MAX.
+
+ _PC_PIPE_BUF
+ returns the size of the pipe buffer, where filedes
+ must refer to a pipe or FIFO and path must refer to
+ a FIFO. The corresponding macro is _POSIX_PIPE_BUF.
+
+
+
+<h3>GNU April 4, 1993 1
+</h3>
+
+
+
+
+<h3>FPATHCONF(3) Linux Programmer's Manual FPATHCONF(3)
+</h3>
+
+ _PC_CHOWN_RESTRICTED
+ returns nonzero if the chown(2) call may not be
+ used on this file. If filedes or path refer to a
+ directory, then this applies to all files in that
+ directory. The corresponding macro is
+ _POSIX_CHOWN_RESTRICTED.
+
+ _PC_NO_TRUNC
+ returns nonzero if accessing filenames longer than
+ _POSIX_NAME_MAX generates an error. The corre-
+ sponding macro is _POSIX_NO_TRUNC.
+
+ _PC_VDISABLE
+ returns nonzero if special character processing can
+ be disabled, where filedes or path must refer to a
+ terminal.
+
+<h3>RETURN VALUE
+</h3> The limit is returned, if one exists. If the system does
+ not have a limit for the requested resource, -1 is
+ returned, and errno is unchanged. If there is an error,
+ -1 is returned, and errno is set to reflect the nature of
+ the error.
+
+<h3>CONFORMS TO
+</h3> POSIX.1 Files with name lengths longer than the value
+ returned for name equal to _PC_NAME_MAX may exist in the
+ given directory.
+
+ Some returned values may be huge; they are not suitable
+ for allocating memory.
+
+</pre>
+<hr>
+<h3>SEE ALSO
+</h3><p>
+<a href=getconf.htm>getconf</a>,
+<a href=statfs.htm>statfs</a>,
+<a href=open.htm>open</a>,
+<a href=sysconf.htm>sysconf</a>,
+<pre>
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+<h3>GNU April 4, 1993 2
+</h3>
+
+ </pre>
+<P>
+<hr>
+<p>
+<center>
+<table border=2 width=80%>
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+
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