@@ -181,10 +181,10 @@ request do_set_mmp_value, "Set MMP value",
request do_extent_open, "Open inode for extent manipulation",
extent_open, eo;
-request do_zap_block, "Zap block",
+request do_zap_block, "Zap block: fill with 0, pattern, flip bits etc.",
zap_block, zap;
-request do_dump_block, "Zap block",
+request do_dump_block, "Dump contents of a block",
block_dump, bp;
end;
@@ -215,6 +215,10 @@ option is given set the owner, group and permissions information on
to match
.IR filespec .
.TP
+.I dump_block [-f out_file] block_num
+Dump the contents of a block, optionally to
+.IR out_file .
+.TP
.I dump_mmp
Display the multiple-mount protection (mmp) field values.
.TP
@@ -612,6 +616,14 @@ Create a file in the filesystem named
and copy the contents of
.I source_file
into the destination file.
+.TP
+.I zap_block [-f file] [-o offset] [-l length] [-p pattern] block_num
+Zero, or pattern-fill, portions of a block within a file or
+within the filesystem.
+.TP
+.I zap_block [-f file] [-b bit] block_num
+Bit-flip portions of a block within a file or
+within the filesystem.
.SH ENVIRONMENT VARIABLES
.TP
.B DEBUGFS_PAGER, PAGER
What little docs there were had a cut & paste error. We can do better. :) Signed-off-by: Eric Sandeen <sandeen@redhat.com> --- -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html