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[/] [or1k_old/] [trunk/] [uclinux/] [uClinux-2.0.x/] [fs/] [autofs/] [dir.c] - Rev 199
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/* -*- linux-c -*- --------------------------------------------------------- * * * linux/fs/autofs/dir.c * * Copyright 1997 Transmeta Corporation -- All Rights Reserved * * This file is part of the Linux kernel and is made available under * the terms of the GNU General Public License, version 2, or at your * option, any later version, incorporated herein by reference. * * ------------------------------------------------------------------------- */ #include "autofs_i.h" static int autofs_dir_readdir(struct inode *inode, struct file *filp, void *dirent, filldir_t filldir) { if (!inode || !S_ISDIR(inode->i_mode)) return -ENOTDIR; switch((unsigned long) filp->f_pos) { case 0: if (filldir(dirent, ".", 1, 0, inode->i_ino) < 0) return 0; filp->f_pos++; /* fall through */ case 1: if (filldir(dirent, "..", 2, 1, AUTOFS_ROOT_INO) < 0) return 0; filp->f_pos++; /* fall through */ } return 1; } static int autofs_dir_lookup(struct inode *dir, const char *name, int len, struct inode **result) { *result = dir; if (!len) return 0; if (name[0] == '.') { if (len == 1) return 0; if (name[1] == '.' && len == 2) { /* Return the root directory */ *result = iget(dir->i_sb,AUTOFS_ROOT_INO); iput(dir); return 0; } } *result = NULL; iput(dir); return -ENOENT; /* No other entries */ } static struct file_operations autofs_dir_operations = { NULL, /* lseek */ NULL, /* read */ NULL, /* write */ autofs_dir_readdir, /* readdir */ NULL, /* select */ NULL, /* ioctl */ NULL, /* mmap */ NULL, /* open */ NULL, /* release */ NULL /* fsync */ }; struct inode_operations autofs_dir_inode_operations = { &autofs_dir_operations, /* file operations */ NULL, /* create */ autofs_dir_lookup, /* lookup */ NULL, /* link */ NULL, /* unlink */ NULL, /* symlink */ NULL, /* mkdir */ NULL, /* rmdir */ NULL, /* mknod */ NULL, /* rename */ NULL, /* readlink */ NULL, /* follow_link */ NULL, /* read_page */ NULL, /* writepage */ NULL, /* bmap */ NULL, /* truncate */ NULL /* permission */ };
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