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<TITLE>readdir</TITLE>
<body bgcolor="#ffffcc">
<hr>
<pre>
<h3>READDIR(2) Linux Programmer's Manual READDIR(2)
</h3>
<h3>NAME
</h3> readdir - read directory entry
<h3>SYNOPSIS
</h3> #include <unistd.h>
#include <linux/dirent.h>
#include <linux/unistd.h>
_syscall3(int, readdir, uint, fd, struct dirent *, dirp, uint, count);
int readdir(unsigned int fd, struct dirent *dirp, unsigned int count);
<h3>DESCRIPTION
</h3> This is not the function you are interested in. Look at
readdir(3) for the POSIX conforming C library interface.
This page documents the bare kernel system call interface,
which can change, and which is superseded by getdents(2).
readdir reads one dirent structure from the directory
pointed at by fd into the memory area pointed to by dirp.
The parameter count is ignored; at most one dirent struc-
ture is read.
The dirent structure is declared as follows:
struct dirent
{
long d_ino; /* inode number */
off_t d_off; /* offset to this dirent */
unsigned short d_reclen; /* length of this d_name */
char d_name [NAME_MAX+1]; /* file name (null-terminated) */
}
d_ino is an inode number. d_off is the distance from the
start of the directory to this dirent. d_reclen is the
size of d_name, not counting the null terminator. d_name
is a null-terminated file name.
<h3>RETURN VALUE
</h3> On success, 1 is returned. On end of directory, 0 is
returned. On error, -1 is returned, and errno is set
appropriately.
<h3>ERRORS
</h3> EBADF Invalid file descriptor fd.
ENOTDIR
File descriptor does not refer to a directory.
<h3>CONFORMING TO
</h3> This system call is Linux specific.
<h3>Linux 1.3.6 22 July 1995 1
</h3>
<h3>READDIR(2) Linux Programmer's Manual READDIR(2)
</h3>
</pre>
<hr>
<h3>SEE ALSO
</h3><p>
<a href=getdents.htm>getdents</a>,
<a href=readdir.htm>readdir</a>,
<pre>
<h3>Linux 1.3.6 22 July 1995 2
</h3>
</pre>
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