READDIR(2) Linux Programmer's Manual READDIR(2)
NAME
readdir - read directory entry
SYNOPSIS
int readdir(unsigned int fd, struct old_linux_dirent *dirp,
unsigned int count);
Note: There is no glibc wrapper for this system call; see NOTES.
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bare kernel system call interface, which is superseded by getdents(2).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 terminating null byte ('