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[/] [or1k_old/] [trunk/] [uclinux/] [uClinux-2.0.x/] [fs/] [autofs/] [dir.c] - Blame information for rev 1765

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Line No. Rev Author Line
1 199 simons 
/* -*- linux-c -*- --------------------------------------------------------- *
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 *
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 * linux/fs/autofs/dir.c
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 *
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 *  Copyright 1997 Transmeta Corporation -- All Rights Reserved
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 *
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 * This file is part of the Linux kernel and is made available under
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 * the terms of the GNU General Public License, version 2, or at your
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 * option, any later version, incorporated herein by reference.
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 *
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 * ------------------------------------------------------------------------- */
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#include "autofs_i.h"
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static int autofs_dir_readdir(struct inode *inode, struct file *filp,
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                               void *dirent, filldir_t filldir)
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{
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        if (!inode || !S_ISDIR(inode->i_mode))
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                return -ENOTDIR;
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        switch((unsigned long) filp->f_pos)
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        {
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        case 0:
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                if (filldir(dirent, ".", 1, 0, inode->i_ino) < 0)
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                        return 0;
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                filp->f_pos++;
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                /* fall through */
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        case 1:
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                if (filldir(dirent, "..", 2, 1, AUTOFS_ROOT_INO) < 0)
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                        return 0;
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                filp->f_pos++;
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                /* fall through */
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        }
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        return 1;
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}
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static int autofs_dir_lookup(struct inode *dir, const char *name, int len,
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                              struct inode **result)
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{
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        *result = dir;
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        if (!len)
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                return 0;
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        if (name[0] == '.') {
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                if (len == 1)
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                        return 0;
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                if (name[1] == '.' && len == 2) {
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                        /* Return the root directory */
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                        *result = iget(dir->i_sb,AUTOFS_ROOT_INO);
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                        iput(dir);
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                        return 0;
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                }
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        }
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        *result = NULL;
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        iput(dir);
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        return -ENOENT;         /* No other entries */
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}
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static struct file_operations autofs_dir_operations = {
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        NULL,                   /* lseek */
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        NULL,                   /* read */
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        NULL,                   /* write */
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        autofs_dir_readdir,     /* readdir */
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        NULL,                   /* select */
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        NULL,                   /* ioctl */
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        NULL,                   /* mmap */
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        NULL,                   /* open */
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        NULL,                   /* release */
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        NULL                    /* fsync */
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};
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struct inode_operations autofs_dir_inode_operations = {
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        &autofs_dir_operations, /* file operations */
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        NULL,                   /* create */
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        autofs_dir_lookup,      /* lookup */
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        NULL,                   /* link */
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        NULL,                   /* unlink */
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        NULL,                   /* symlink */
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        NULL,                   /* mkdir */
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        NULL,                   /* rmdir */
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        NULL,                   /* mknod */
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        NULL,                   /* rename */
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        NULL,                   /* readlink */
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        NULL,                   /* follow_link */
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        NULL,                   /* read_page */
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        NULL,                   /* writepage */
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        NULL,                   /* bmap */
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        NULL,                   /* truncate */
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        NULL                    /* permission */
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};
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