patch-2.1.21 linux/fs/ext/dir.c

• Lines: 123
• Date: Thu Jan 1 02:00:00 1970
• Orig file: v2.1.20/linux/fs/ext/dir.c
• Orig date: Tue Oct 29 19:58:20 1996

diff -u --recursive --new-file v2.1.20/linux/fs/ext/dir.c linux/fs/ext/dir.c
@@ -1,122 +0,0 @@
-/*
- *  linux/fs/ext/dir.c
- *
- *  Copyright (C) 1992 Remy Card (card@masi.ibp.fr)
- *
- *  from
- *
- *  linux/fs/minix/dir.c
- *
- *  Copyright (C) 1991, 1992 Linus Torvalds
- *
- *  ext directory handling functions
- */
-
-#include <asm/uaccess.h>
-
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/ext_fs.h>
-#include <linux/stat.h>
-
-static long ext_dir_read(struct inode * inode, struct file * filp,
-	char * buf, unsigned long count)
-{
-	return -EISDIR;
-}
-
-static int ext_readdir(struct inode *, struct file *, void *, filldir_t);
-
-static struct file_operations ext_dir_operations = {
-	NULL,			/* lseek - default */
-	ext_dir_read,		/* read */
-	NULL,			/* write - bad */
-	ext_readdir,		/* readdir */
-	NULL,			/* select - default */
-	NULL,			/* ioctl - default */
-	NULL,			/* mmap */
-	NULL,			/* no special open code */
-	NULL,			/* no special release code */
-	file_fsync		/* fsync */
-};
-
-/*
- * directories can handle most operations...
- */
-struct inode_operations ext_dir_inode_operations = {
-	&ext_dir_operations,	/* default directory file-ops */
-	ext_create,		/* create */
-	ext_lookup,		/* lookup */
-	ext_link,		/* link */
-	ext_unlink,		/* unlink */
-	ext_symlink,		/* symlink */
-	ext_mkdir,		/* mkdir */
-	ext_rmdir,		/* rmdir */
-	ext_mknod,		/* mknod */
-	ext_rename,		/* rename */
-	NULL,			/* readlink */
-	NULL,			/* follow_link */
-	NULL,			/* readpage */
-	NULL,			/* writepage */
-	NULL,			/* bmap */
-	ext_truncate,		/* truncate */
-	NULL			/* permission */
-};
-
-static int ext_readdir(struct inode * inode, struct file * filp,
-	void * dirent, filldir_t filldir)
-{
-	int error;
-	unsigned int i;
-	off_t offset;
-	struct buffer_head * bh;
-	struct ext_dir_entry * de;
-
-	if (!inode || !S_ISDIR(inode->i_mode))
-		return -EBADF;
-	if ((filp->f_pos & 7) != 0)
-		return -EBADF;
-	error = 0;
-	while (!error && filp->f_pos < inode->i_size) {
-		offset = filp->f_pos & 1023;
-		bh = ext_bread(inode,(filp->f_pos)>>BLOCK_SIZE_BITS,0);
-		if (!bh) {
-			filp->f_pos += 1024-offset;
-			continue;
-		}
-		for (i = 0; i < 1024 && i < offset; ) {
-			de = (struct ext_dir_entry *) (bh->b_data + i);
-			if (!de->rec_len)
-				break;
-			i += de->rec_len;
-		}
-		offset = i;
-		de = (struct ext_dir_entry *) (offset + bh->b_data);
-		while (offset < 1024 && filp->f_pos < inode->i_size) {
-			if (de->rec_len < 8 || de->rec_len % 8 != 0 ||
-			    de->rec_len < de->name_len + 8 ||
-			    (de->rec_len + (off_t) filp->f_pos - 1) / 1024 > ((off_t) filp->f_pos / 1024)) {
-				printk ("ext_readdir: bad dir entry, skipping\n");
-				printk ("dev=%s, dir=%ld, "
-				    "offset=%ld, rec_len=%d, name_len=%d\n",
-				    kdevname(inode->i_dev), inode->i_ino,
-				    offset, de->rec_len, de->name_len);
-				filp->f_pos += 1024-offset;
-				if (filp->f_pos > inode->i_size)
-					filp->f_pos = inode->i_size;
-				continue;
-			}
-			if (de->inode) {
-				error = filldir(dirent, de->name, de->name_len, filp->f_pos, de->inode);
-				if (error)
-					break;
-			}
-			offset += de->rec_len;
-			filp->f_pos += de->rec_len;
-			((char *) de) += de->rec_len;
-		}
-		brelse(bh);
-	}
-	return 0;
-}