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Date: Sat, 20 Dec 2014 13:16:53 -0800
From: "Darrick J. Wong" <darrick.wong@...cle.com>
To: tytso@....edu, darrick.wong@...cle.com
Cc: linux-ext4@...r.kernel.org
Subject: [PATCH 02/31] debugfs: document new commands
Document the new journal and xattr commands in the debugfs manpage.
Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
---
debugfs/debugfs.8.in | 47 ++++++++++++++++++++++++++++++++++++++++++++++-
debugfs/do_journal.c | 3 ++-
2 files changed, 48 insertions(+), 2 deletions(-)
diff --git a/debugfs/debugfs.8.in b/debugfs/debugfs.8.in
index 8f44ced..04c280d 100644
--- a/debugfs/debugfs.8.in
+++ b/debugfs/debugfs.8.in
@@ -262,6 +262,32 @@ not stored in filesystem data structures. Hence, the values displayed
may not necessarily by accurate and does not indicate a problem or
corruption in the file system.)
.TP
+.BI ea_get " [-f outfile] filespec attr_name"
+Retrieve the value of the extended attribute
+.I attr_name
+in the file
+.I filespec
+and write it either to stdout or to \fIoutfile\fR.
+.TP
+.BI ea_list " filespec
+List the extended attributes associated with the file
+.I filespec
+to standard output.
+.TP
+.BI ea_set " [-f infile] filespec attr_name attr_value
+Set the value of the extended attribute
+.I attr_name
+in the file
+.I filespec
+to the string value
+.I attr_value
+or read it from \fIinfile\fR.
+.TP
+.BI ea_rm " filespec attr_names...
+Remove the extended attribute
+.I attr_name
+from the file \fIfilespec\fR.
+.TP
.BI expand_dir " filespec"
Expand the directory
.IR filespec .
@@ -373,6 +399,26 @@ to do this, use the
program. This is just a call to the low-level library, which sets up
the superblock and block descriptors.
.TP
+.BI journal_close
+Close the open journal.
+.TP
+.BI journal_open " [-c] [-v ver] [-j ext_jnl]
+Opens the journal for reading and writing. Journal checksumming can
+be enabled by supplying \fI-c\fR; checksum formats 2 and 3 can be
+selected with the \fI-v\fR option. An external journal can be loaded
+from \fIext_jnl\fR.
+.TP
+.BI journal_run
+Replay all transactions in the open journal.
+.TP
+.BI journal_write " [-b blocks] [-r revoke] [-c] file
+Write a transaction to the open journal. The list of blocks to write
+should be supplied as a comma-separated list in \fIblocks\fR; the
+blocks themselves should be readable from \fIfile\fR. A list of
+blocks to revoke can be supplied as a comma-separated list in
+\fIrevoke\fR. By default, a commit record is written at the end; the
+\fI-c\fR switch writes an uncommitted transaction.
+.TP
.BI kill_file " filespec"
Deallocate the inode
.I filespec
@@ -667,7 +713,6 @@ into a newly-created file in the filesystem named
.IR out_file .
.TP
.BI zap_block " [-f filespec] [-o offset] [-l length] [-p pattern] block_num"
-.TP
Overwrite the block specified by
.I block_num
with zero (NUL) bytes, or if
diff --git a/debugfs/do_journal.c b/debugfs/do_journal.c
index a17af6e..46d1793 100644
--- a/debugfs/do_journal.c
+++ b/debugfs/do_journal.c
@@ -925,9 +925,10 @@ void do_journal_open(int argc, char *argv[])
}
break;
default:
- printf("%s: [-c] [-v ver]\n", argv[0]);
+ printf("%s: [-c] [-v ver] [-f ext_jnl]\n", argv[0]);
printf("-c: Enable journal checksumming.\n");
printf("-v: Use this version checksum format.\n");
+ printf("-j: Load this external journal.\n");
}
}
--
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