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readdir (2)
  • readdir (2) ( Русские man: Системные вызовы )
  • >> readdir (2) ( Linux man: Системные вызовы )
  • readdir (3) ( Solaris man: Библиотечные вызовы )
  • readdir (3) ( FreeBSD man: Библиотечные вызовы )
  • readdir (3) ( Русские man: Библиотечные вызовы )
  • readdir (3) ( Linux man: Библиотечные вызовы )
  • readdir (3) ( POSIX man: Библиотечные вызовы )
  •  

    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 This page documents the bare kernel system call interface, which is superseded by getdents(2).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

    getdents(2), readdir(3)  

    COLOPHON

    This page is part of release 3.14 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/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    CONFORMING TO
    NOTES
    SEE ALSO
    COLOPHON


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