readdir(2)
NAME
readdir - read directory entry
SYNOPSIS
int readdir(unsigned int fd, struct old_linux_dirent *dirp,
unsigned int count);
DESCRIPTION
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 This page documents the bare kernel system call interface, which is superseded by getdents(2).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; /* inode number */
off_t d_off; /* offset to this old_linux_dirent */ unsigned short d_reclen; /* length of this d_name */ char d_name[NAME_MAX+1]; /* filename (null-terminated) */ - }
- 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 null terminator. d_name is a null-terminated filename.
RETURN VALUE
On success, 1 is returned. On end of directory, 0 is returned. On
error, -1 is returned, and errno is set appropriately.
ERRORS
EBADF Invalid file descriptor fd.
EFAULT Argument points outside the calling process's address space.
EINVAL Result buffer is too small.
ENOENT No such directory.
- ENOTDIR
- File descriptor does not refer to a directory.
CONFORMING TO
This system call is Linux-specific.
NOTES
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.
SEE ALSO
COLOPHON
- This page is part of release 3.25 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.