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Message-Id: <20070209225336.8096B175@localhost.localdomain>
Date: Fri, 09 Feb 2007 14:53:36 -0800
From: Dave Hansen <hansendc@...ibm.com>
To: linux-kernel@...r.kernel.org
Cc: akpm@...l.org, hch@...radead.org, Dave Hansen <hansendc@...ibm.com>
Subject: [PATCH 10/22] unix_find_other() elevate write count for touch_atime()
Signed-off-by: Dave Hansen <haveblue@...ibm.com>
---
lxc-dave/net/unix/af_unix.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff -puN net/unix/af_unix.c~12-24-unix-find-other-elevate-write-count-for-touch-atime net/unix/af_unix.c
--- lxc/net/unix/af_unix.c~12-24-unix-find-other-elevate-write-count-for-touch-atime 2007-02-09 14:26:52.000000000 -0800
+++ lxc-dave/net/unix/af_unix.c 2007-02-09 14:26:52.000000000 -0800
@@ -703,21 +703,27 @@ static struct sock *unix_find_other(stru
err = path_lookup(sunname->sun_path, LOOKUP_FOLLOW, &nd);
if (err)
goto fail;
+
+ err = mnt_want_write(nd.mnt);
+ if (err)
+ goto put_path_fail;
+
err = vfs_permission(&nd, MAY_WRITE);
if (err)
- goto put_fail;
+ goto mnt_drop_write_fail;
err = -ECONNREFUSED;
if (!S_ISSOCK(nd.dentry->d_inode->i_mode))
- goto put_fail;
+ goto mnt_drop_write_fail;
u=unix_find_socket_byinode(nd.dentry->d_inode);
if (!u)
- goto put_fail;
+ goto mnt_drop_write_fail;
if (u->sk_type == type)
touch_atime(nd.mnt, nd.dentry);
path_release(&nd);
+ mnt_drop_write(nd.mnt);
err=-EPROTOTYPE;
if (u->sk_type != type) {
@@ -737,7 +743,9 @@ static struct sock *unix_find_other(stru
}
return u;
-put_fail:
+mnt_drop_write_fail:
+ mnt_drop_write(nd.mnt);
+put_path_fail:
path_release(&nd);
fail:
*error=err;
_
-
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