readdir — read directory entry
int
readdir( |
unsigned int fd, |
| struct old_linux_dirent *dirp, | |
unsigned int count); |
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 This page documents the bare kernel system call interface, which is superseded by getdents(2).
readdir() reads one
old_linux_dirent structure
from the directory referred to by the file descriptor
fd into the buffer
pointed to by dirp.
The argument count is
ignored; at most one old_linux_dirent structure is read.
The old_linux_dirent structure is declared as follows:
struct old_linux_dirent { long d_ino;off_t d_off;unsigned short d_reclen;char d_name[NAME_MAX+1];};
d_ino is an inode
number. d_off is the
distance from the start of the directory to this old_linux_dirent. d_reclen is the size of
d_name, not counting
the terminating null byte. d_name is a null-terminated
filename.
On success, 1 is returned. On end of directory, 0 is
returned. On error, −1 is returned, and errno is set appropriately.
Invalid file descriptor fd.
Argument points outside the calling process's address space.
Result buffer is too small.
No such directory.
File descriptor does not refer to a directory.
Glibc does not provide a wrapper for this system call; call it using syscall(2). You will need to define the old_linux_dirent structure yourself.
This page is part of release 3.33 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at http://man7.org/linux/man-pages/.
|
Copyright (C) 1995 Andries Brouwer (aebcwi.nl) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. Written 11 June 1995 by Andries Brouwer <aebcwi.nl> Modified 22 July 1995 by Michael Chastain <mecduracef.shout.net>: In 1.3.X, returns only one entry each time; return value is different. Modified 2004-12-01, mtk, fixed headers listed in SYNOPSIS |