syscalls_18.html

Linux系统调用

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<TITLE>Syscall specifications of Linux - link</TITLE>
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<H2><A NAME="SEC18" HREF="syscalls_toc.html#SEC18" tppabs="http://personal.xfol.com/%7erezaie/syscall/syscalls_toc.html#SEC18">link</A></H2>
<P>
<H3>SYNOPSIS</H3>
<P>
<CODE>int link(const char *<VAR>src</VAR>, const char *<VAR>new</VAR>);</CODE>
<P>
<H3>PARAMETERS</H3>
<P>
<VAR>src</VAR>: [in] points the the file we want to add a link to.
<P>
<VAR>new</VAR>: [in] points to the path for the new link.
 
<H3>DESCRIPTION</H3>
<P>
Creates a new (hard) link to a file. There is no way to distinguish
the links.
<P>
<H3>RETURN VALUE</H3>
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On success zero is returned. On error, -1 is returned and <CODE>errno</CODE> is
set to one of the following values:
<P>
<UL>
<LI><CODE>EPERM</CODE>: the file system does not support hard links or
<VAR>oldpath</VAR> is the <CODE>.</CODE> or <CODE>..</CODE> entry of a directory.
<LI><CODE>EXDEV</CODE>, <CODE>EFAULT</CODE>, <CODE>EACCESS</CODE>, <CODE>ENAMETOOLONG</CODE>,
<CODE>ENOENT</CODE>, <CODE>ENOTDIR</CODE>, <CODE>ENOMEM</CODE>, <CODE>EROFS</CODE>,
<CODE>EEXIST</CODE>, <CODE>EMLINK</CODE>, <CODE>ELOOP</CODE> and. <CODE>ESPC</CODE>.
</UL>
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