NAME

     readdir - read directory entry

SYNOPSIS

     #include <unistd.h>
     #include <linux/dirent.h>
     #include <linux/unistd.h>

     _syscall3(int, readdir, uint, fd, struct dirent

     int readdir(unsigned int fd, struct 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     which can change, and which is superseded by getdents(2).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 structure
     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.

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.

SEE ALSO

     getdents(2), readdir(3)