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

• Lines: 132
• Date: Thu Jan 1 02:00:00 1970
• Orig file: v2.1.20/linux/fs/xiafs/dir.c
• Orig date: Tue Oct 29 19:58:46 1996

diff -u --recursive --new-file v2.1.20/linux/fs/xiafs/dir.c linux/fs/xiafs/dir.c
@@ -1,131 +0,0 @@
-/*
- *  linux/fs/xiafs/dir.c
- *  
- *  Copyright (C) Q. Frank Xia, 1993.
- *  
- *  Based on Linus' minix/dir.c
- *  Copyright (C) Linus Torvalds, 1991, 1992.
- *
- *  This software may be redistributed per Linux Copyright.
- */
-
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/xia_fs.h>
-#include <linux/stat.h>
-
-#include <asm/uaccess.h>
-
-#include "xiafs_mac.h"
-
-static long xiafs_dir_read(struct inode *, struct file *, char *, unsigned long);
-static int xiafs_readdir(struct inode *, struct file *, void *, filldir_t);
-
-static struct file_operations xiafs_dir_operations = {
-    NULL,		/* lseek - default */
-    xiafs_dir_read,	/* read */
-    NULL,		/* write - bad */
-    xiafs_readdir,	/* readdir */
-    NULL,		/* select - default */
-    NULL,		/* ioctl - default */
-    NULL,		/* mmap */
-    NULL,		/* no special open code */
-    NULL,		/* no special release code */
-    file_fsync		/* default fsync */
-};
-
-/*
- * directories can handle most operations...
- */
-struct inode_operations xiafs_dir_inode_operations = {
-    &xiafs_dir_operations,	/* default directory file-ops */
-    xiafs_create,			/* create */
-    xiafs_lookup,			/* lookup */
-    xiafs_link,			/* link */
-    xiafs_unlink,			/* unlink */
-    xiafs_symlink,		/* symlink */
-    xiafs_mkdir,			/* mkdir */
-    xiafs_rmdir,			/* rmdir */
-    xiafs_mknod,			/* mknod */
-    xiafs_rename,			/* rename */
-    NULL,			/* readlink */
-    NULL,			/* follow_link */
-    NULL,			/* readpage */
-    NULL,			/* writepage */
-    NULL,			/* bmap */
-    xiafs_truncate,		/* truncate */
-    NULL			/* permission */
-};
-
-static long xiafs_dir_read(struct inode * inode, struct file * filp,
-	char * buf, unsigned long count)
-{
-  return -EISDIR;
-}
-
-static int xiafs_readdir(struct inode * inode, struct file * filp,
-	void * dirent, filldir_t filldir)
-{
-    u_int offset, i;
-    struct buffer_head * bh;
-    struct xiafs_direct * de;
-
-    if (!inode || !inode->i_sb || !S_ISDIR(inode->i_mode))
-        return -EBADF;
-    if (inode->i_size & (XIAFS_ZSIZE(inode->i_sb) - 1) )
-        return -EBADF;
-    while (filp->f_pos < inode->i_size) {
-        offset = filp->f_pos & (XIAFS_ZSIZE(inode->i_sb) - 1);
-	bh = xiafs_bread(inode, filp->f_pos >> XIAFS_ZSIZE_BITS(inode->i_sb),0);
-	if (!bh) {
-	    filp->f_pos += XIAFS_ZSIZE(inode->i_sb)-offset;
-	    continue;
-	}
-	for (i = 0; i < XIAFS_ZSIZE(inode->i_sb) && i < offset; ) {
-	    de = (struct xiafs_direct *) (bh->b_data + i);
-	    if (!de->d_rec_len)
-		break;
-	    i += de->d_rec_len;
-	}
-	offset = i;
-	de = (struct xiafs_direct *) (offset + bh->b_data);
-	
-	while (offset < XIAFS_ZSIZE(inode->i_sb) && filp->f_pos < inode->i_size) {
-	    if (de->d_ino > inode->i_sb->u.xiafs_sb.s_ninodes ||
-		de->d_rec_len < 12 || 
-		(char *)de+de->d_rec_len > XIAFS_ZSIZE(inode->i_sb)+bh->b_data ||
-		de->d_name_len < 1 || de->d_name_len + 8 > de->d_rec_len ||
-		de->d_name_len > _XIAFS_NAME_LEN ||
-		de->d_name[de->d_name_len] ) {
-	        printk("XIA-FS: bad directory entry (%s %d)\n", WHERE_ERR);
-		brelse(bh);
-		return 0;
-	    }  
-	    if (de->d_ino) {
-		if (!IS_RDONLY (inode)) {
-		    inode->i_atime=CURRENT_TIME;
-		    inode->i_dirt=1;
-		}
-		if (filldir(dirent, de->d_name, de->d_name_len, filp->f_pos, de->d_ino) < 0) {
-		    brelse(bh);
-		    return 0;
-		}
-	    }
-	    offset += de->d_rec_len;
-	    filp->f_pos += de->d_rec_len;
-	    de = (struct xiafs_direct *) (offset + bh->b_data);
-	}
-	brelse(bh);
-	if (offset > XIAFS_ZSIZE(inode->i_sb)) {
-	    printk("XIA-FS: bad directory (%s %d)\n", WHERE_ERR);
-	    return 0;
-	}
-    }
-    if (!IS_RDONLY (inode)) {
-	inode->i_atime=CURRENT_TIME;		    
-	inode->i_dirt=1;
-    }
-    return 0;
-}