linux-kernel - [PATCH 3/4] proc: Show open file ID in /proc/pid/fdinfo/*

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Date:	Thu, 17 Nov 2011 13:56:56 +0400
From:	Pavel Emelyanov <xemul@...allels.com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:	Cyrill Gorcunov <gorcunov@...nvz.org>,
	Glauber Costa <glommer@...allels.com>,
	Andi Kleen <andi@...stfloor.org>, Tejun Heo <tj@...nel.org>,
	Matt Helsley <matthltc@...ibm.com>,
	Pekka Enberg <penberg@...nel.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 3/4] proc: Show open file ID in /proc/pid/fdinfo/*

Signed-off-by: Pavel Emelyanov <xemul@...allels.com>

---
 fs/proc/base.c     |    6 ++++--
 include/linux/mm.h |    1 +
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 5eb0206..cb3e34c 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1934,9 +1934,11 @@ static int proc_fd_info(struct inode *inode, struct path *path, char *info)
 			if (info)
 				snprintf(info, PROC_FDINFO_MAX,
 					 "pos:\t%lli\n"
-					 "flags:\t0%o\n",
+					 "flags:\t0%o\n"
+					 "id:\t%lu\n",
 					 (long long) file->f_pos,
-					 f_flags);
+					 f_flags,
+					 gen_object_id(file, GEN_OBJ_ID_FILE));
 			spin_unlock(&files->file_lock);
 			put_files_struct(files);
 			return 0;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index cd4d727..caa42ca 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1629,6 +1629,7 @@ extern void copy_user_huge_page(struct page *dst, struct page *src,
 
 enum {
 	GEN_OBJ_ID_NS,
+	GEN_OBJ_ID_FILE,
 	GEN_OBJ_ID_TYPES,
 };
 
-- 
1.5.5.6
--
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