Adding upstream version 1.47.0.upstream/1.47.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 219 insertions, 0 deletions

diff --git a/debugfs/lsdel.c b/debugfs/lsdel.c
new file mode 100644
index 0000000..52c7419
--- /dev/null
+++ b/debugfs/lsdel.c
@@ -0,0 +1,219 @@
+/*
+ * lsdel.c --- routines to try to help a user recover a deleted file.
+ *
+ * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+ * Theodore Ts'o.  This file may be redistributed under the terms of
+ * the GNU Public License.
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <time.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "debugfs.h"
+
+struct deleted_info {
+	ext2_ino_t	ino;
+	unsigned short	mode;
+	__u32		uid;
+	__u64		size;
+	time_t		dtime;
+	e2_blkcnt_t	num_blocks;
+	e2_blkcnt_t	free_blocks;
+};
+
+struct lsdel_struct {
+	ext2_ino_t		inode;
+	e2_blkcnt_t		num_blocks;
+	e2_blkcnt_t		free_blocks;
+	e2_blkcnt_t		bad_blocks;
+};
+
+static int deleted_info_compare(const void *a, const void *b)
+{
+	const struct deleted_info *arg1, *arg2;
+
+	arg1 = (const struct deleted_info *) a;
+	arg2 = (const struct deleted_info *) b;
+
+	return arg1->dtime - arg2->dtime;
+}
+
+static int lsdel_proc(ext2_filsys fs,
+		      blk64_t	*block_nr,
+		      e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
+		      blk64_t ref_block EXT2FS_ATTR((unused)),
+		      int ref_offset EXT2FS_ATTR((unused)),
+		      void *private)
+{
+	struct lsdel_struct *lsd = (struct lsdel_struct *) private;
+
+	lsd->num_blocks++;
+
+	if (*block_nr < fs->super->s_first_data_block ||
+	    *block_nr >= ext2fs_blocks_count(fs->super)) {
+		lsd->bad_blocks++;
+		return BLOCK_ABORT;
+	}
+
+	if (!ext2fs_test_block_bitmap2(fs->block_map,*block_nr))
+		lsd->free_blocks++;
+
+	return 0;
+}
+
+void do_lsdel(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
+	      void *infop EXT2FS_ATTR((unused)))
+{
+	struct lsdel_struct 	lsd;
+	struct deleted_info	*delarray;
+	int			num_delarray, max_delarray;
+	ext2_inode_scan		scan = 0;
+	ext2_ino_t		ino;
+	struct ext2_inode	inode;
+	errcode_t		retval;
+	char			*block_buf;
+	int			i;
+ 	long			secs = 0;
+ 	char			*tmp;
+	time_t			now;
+	FILE			*out;
+
+	if (common_args_process(argc, argv, 1, 2, "list_deleted_inodes",
+				"[secs]", 0))
+		return;
+
+	if (argc > 1) {
+		secs = strtol(argv[1],&tmp,0);
+		if (*tmp) {
+			com_err(argv[0], 0, "Bad time - %s",argv[1]);
+			return;
+		}
+	}
+
+	now = current_fs->now ? current_fs->now : time(0);
+	max_delarray = 100;
+	num_delarray = 0;
+	delarray = malloc(max_delarray * sizeof(struct deleted_info));
+	if (!delarray) {
+		com_err("ls_deleted_inodes", ENOMEM,
+			"while allocating deleted information storage");
+		exit(1);
+	}
+
+	block_buf = malloc(current_fs->blocksize * 3);
+	if (!block_buf) {
+		com_err("ls_deleted_inodes", ENOMEM, "while allocating block buffer");
+		goto error_out;
+	}
+
+	retval = ext2fs_open_inode_scan(current_fs, 0, &scan);
+	if (retval) {
+		com_err("ls_deleted_inodes", retval,
+			"while opening inode scan");
+		goto error_out;
+	}
+
+	do {
+		retval = ext2fs_get_next_inode(scan, &ino, &inode);
+	} while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
+	if (retval) {
+		com_err("ls_deleted_inodes", retval,
+			"while starting inode scan");
+		goto error_out;
+	}
+
+	while (ino) {
+		if ((inode.i_dtime == 0) ||
+		    (secs && (labs(now - secs) > (long) inode.i_dtime)))
+			goto next;
+
+		lsd.inode = ino;
+		lsd.num_blocks = 0;
+		lsd.free_blocks = 0;
+		lsd.bad_blocks = 0;
+
+		if (ext2fs_inode_has_valid_blocks2(current_fs, &inode)) {
+			retval = ext2fs_block_iterate3(current_fs, ino,
+						       BLOCK_FLAG_READ_ONLY,
+						       block_buf,
+						       lsdel_proc, &lsd);
+			if (retval) {
+				com_err("ls_deleted_inodes", retval,
+					"while calling ext2fs_block_iterate2");
+				goto next;
+			}
+		}
+		if ((lsd.free_blocks && !lsd.bad_blocks) ||
+		    inode.i_flags & EXT4_INLINE_DATA_FL) {
+			if (num_delarray >= max_delarray) {
+				max_delarray += 50;
+				delarray = realloc(delarray,
+			   max_delarray * sizeof(struct deleted_info));
+				if (!delarray) {
+					com_err("ls_deleted_inodes",
+						ENOMEM,
+						"while reallocating array");
+					exit(1);
+				}
+			}
+
+			delarray[num_delarray].ino = ino;
+			delarray[num_delarray].mode = inode.i_mode;
+			delarray[num_delarray].uid = inode_uid(inode);
+			delarray[num_delarray].size = EXT2_I_SIZE(&inode);
+			delarray[num_delarray].dtime = (__s32) inode.i_dtime;
+			delarray[num_delarray].num_blocks = lsd.num_blocks;
+			delarray[num_delarray].free_blocks = lsd.free_blocks;
+			num_delarray++;
+		}
+
+	next:
+		do {
+			retval = ext2fs_get_next_inode(scan, &ino, &inode);
+		} while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
+		if (retval) {
+			com_err("ls_deleted_inodes", retval,
+				"while doing inode scan");
+			goto error_out;
+		}
+	}
+
+	out = open_pager();
+
+	fprintf(out, " Inode  Owner  Mode    Size      Blocks   Time deleted\n");
+
+	qsort(delarray, num_delarray, sizeof(struct deleted_info),
+	      deleted_info_compare);
+
+	for (i = 0; i < num_delarray; i++) {
+		fprintf(out, "%6u %6d %6o %6llu %6lld/%6lld %s",
+			delarray[i].ino,
+			delarray[i].uid, delarray[i].mode,
+			(unsigned long long) delarray[i].size,
+			(long long) delarray[i].free_blocks,
+			(long long) delarray[i].num_blocks,
+			time_to_string(delarray[i].dtime));
+	}
+	fprintf(out, "%d deleted inodes found.\n", num_delarray);
+	close_pager(out);
+
+error_out:
+	free(block_buf);
+	free(delarray);
+	if (scan)
+		ext2fs_close_inode_scan(scan);
+	return;
+}
+
+
+