From 3839e65723771b85975f4263102dd3ceec4523c0 Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Sat, 26 Apr 1997 13:21:57 +0000
Subject: Many files:   Checkin of e2fsprogs 0.5b

---
 debugfs/ncheck.c | 173 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 173 insertions(+)
 create mode 100644 debugfs/ncheck.c

(limited to 'debugfs/ncheck.c')

diff --git a/debugfs/ncheck.c b/debugfs/ncheck.c
new file mode 100644
index 00000000..062e7c53
--- /dev/null
+++ b/debugfs/ncheck.c
@@ -0,0 +1,173 @@
+/*
+ * ncheck.c --- given a list of inodes, generate a list of names
+ * 
+ * Copyright (C) 1994 Theodore Ts'o.  This file may be redistributed
+ * under the terms of the GNU Public License.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <time.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "debugfs.h"
+
+struct inode_info {
+	ino_t	ino;
+	ino_t	parent;
+	char	*pathname;
+};
+
+struct inode_walk_struct {
+	struct inode_info	*iarray;
+	int			inodes_left;
+	int			num_inodes;
+	int			position;
+	ino_t			parent;
+};
+
+int ncheck_proc(struct ext2_dir_entry *dirent,
+		int	offset,
+		int	blocksize,
+		char	*buf,
+		void	*private)
+{
+	struct inode_walk_struct *iw = (struct inode_walk_struct *) private;
+	int	i;
+
+	iw->position++;
+	if (iw->position <= 2)
+		return 0;
+	for (i=0; i < iw->num_inodes; i++) {
+		if (iw->iarray[i].ino == dirent->inode) {
+			iw->iarray[i].parent = iw->parent;
+			iw->inodes_left--;
+		}
+	}
+	if (!iw->inodes_left)
+		return DIRENT_ABORT;
+	
+	return 0;
+}
+
+void do_ncheck(int argc, char **argv)
+{
+	struct inode_walk_struct iw;
+	struct inode_info	*iinfo;
+	int			i;
+	ext2_inode_scan		scan = 0;
+	ino_t			ino;
+	struct ext2_inode	inode;
+	errcode_t		retval;
+	char			*tmp;
+	
+	if (argc < 2) {
+		com_err(argv[0], 0, "Usage: ncheck <inode number> ...");
+		return;
+	}
+	if (check_fs_open(argv[0]))
+		return;
+
+	iw.iarray = malloc(sizeof(struct inode_info) * argc);
+	if (!iw.iarray) {
+		com_err("do_ncheck", ENOMEM,
+			"while allocating inode info array");
+		return;
+	}
+	memset(iw.iarray, 0, sizeof(struct inode_info) * argc);
+
+	for (i=1; i < argc; i++) {
+		iw.iarray[i-1].ino = strtol(argv[i], &tmp, 0);
+		if (*tmp) {
+			com_err(argv[0], 0, "Bad inode - %s", argv[i]);
+			return;
+		}
+	}
+
+	iw.num_inodes = iw.inodes_left = argc-1;
+
+	retval = ext2fs_open_inode_scan(fs, 0, &scan);
+	if (retval) {
+		com_err("ncheck", retval, "while opening inode scan");
+		goto error_out;
+	}
+
+	retval = ext2fs_get_next_inode(scan, &ino, &inode);
+	if (retval) {
+		com_err("ncheck", retval, "while starting inode scan");
+		goto error_out;
+	}
+	
+	while (ino) {
+		if (!inode.i_links_count)
+			goto next;
+		/*
+		 * To handle filesystems touched by 0.3c extfs; can be
+		 * removed later.
+		 */
+		if (inode.i_dtime)
+			goto next;
+		/* Ignore anything that isn't a directory */
+		if (!S_ISDIR(inode.i_mode))
+			goto next;
+
+		iw.position = 0;
+		iw.parent = ino;
+		
+		retval = ext2fs_dir_iterate(fs, ino, 0, 0,
+					    ncheck_proc, &iw);
+		if (retval) {
+			com_err("ncheck", retval,
+				"while calling ext2_dir_iterate");
+			goto next;
+		}
+
+		if (iw.inodes_left == 0)
+			break;
+
+	next:
+		retval = ext2fs_get_next_inode(scan, &ino, &inode);
+		if (retval) {
+			com_err("ncheck", retval,
+				"while doing inode scan");
+			goto error_out;
+		}
+	}
+
+	for (i=0, iinfo = iw.iarray; i < iw.num_inodes; i++, iinfo++) {
+		if (iinfo->parent == 0)
+			continue;
+		retval = ext2fs_get_pathname(fs, iinfo->parent,
+					     iinfo->ino, &iinfo->pathname);
+		if (retval)
+			com_err("ncheck", retval,
+				"while resolving pathname for inode %d (%d)",
+				iinfo->parent, iinfo->ino);
+	}
+	
+	printf("Inode\tPathname\n");
+	for (i=0, iinfo = iw.iarray; i < iw.num_inodes; i++, iinfo++) {
+		if (iinfo->parent == 0) {
+			printf("%ld\t<inode not found>\n", iinfo->ino);
+			continue;
+		}
+		printf("%ld\t%s\n", iinfo->ino, iinfo->pathname ?
+		       iinfo->pathname : "<unknown pathname>");
+		if (iinfo->pathname)
+			free(iinfo->pathname);
+	}
+
+error_out:
+	free(iw.iarray);
+	if (scan)
+		ext2fs_close_inode_scan(scan);
+	return;
+}
+
+
+
-- 
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