linux-ext4 - [PATCH] e2fsprogs/filefrag: print shared extent flag

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20140417214146.GD27178@wotan.suse.de>
Date:	Thu, 17 Apr 2014 14:41:46 -0700
From:	Mark Fasheh <mfasheh@...e.de>
To:	linux-ext4@...r.kernel.org
Cc:	tytso@....edu, adilger.kernel@...ger.ca
Subject: [PATCH] e2fsprogs/filefrag: print shared extent flag

Filefrag doesn't catch and print the shared extent flag. Add this for
users of filefrag on file systems with shared extents (such as btrfs).

Signed-off-by: Mark Fasheh <mfasheh@...e.de>
---
 lib/ext2fs/fiemap.h | 2 ++
 misc/filefrag.c     | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/lib/ext2fs/fiemap.h b/lib/ext2fs/fiemap.h
index 30bf555..895cd0b 100644
--- a/lib/ext2fs/fiemap.h
+++ b/lib/ext2fs/fiemap.h
@@ -64,5 +64,7 @@ struct fiemap {
 #define FIEMAP_EXTENT_MERGED		0x00001000 /* File does not natively
 						    * support extents. Result
 						    * merged for efficiency. */
+#define FIEMAP_EXTENT_SHARED		0x00002000 /* Space shared with other
+						    * files. */
 
 #endif /* _LINUX_FIEMAP_H */
diff --git a/misc/filefrag.c b/misc/filefrag.c
index a050a22..929a33b 100644
--- a/misc/filefrag.c
+++ b/misc/filefrag.c
@@ -165,6 +165,8 @@ static void print_extent_info(struct fiemap_extent *fm_extent, int cur_ex,
 		strcat(flags, "unwritten,");
 	if (fm_extent->fe_flags & FIEMAP_EXTENT_MERGED)
 		strcat(flags, "merged,");
+	if (fm_extent->fe_flags & FIEMAP_EXTENT_SHARED)
+		strcat(flags, "shared,");
 
 	if (fm_extent->fe_logical + fm_extent->fe_length >= (__u64) st->st_size)
 		strcat(flags, "eof,");
-- 
1.8.4

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html