Messages in this thread Patch in this message | | | Subject | [PATCH 18/28] unix_find_other() elevate write count for touch_atime() | From | Dave Hansen <> | Date | Tue, 01 Aug 2006 16:52:53 -0700 |
| |
Signed-off-by: Dave Hansen <haveblue@us.ibm.com> ---
lxc-dave/net/unix/af_unix.c | 16 ++++++++++++---- 1 files changed, 12 insertions(+), 4 deletions(-)
diff -puN net/unix/af_unix.c~C-elevate-writers-opens-part4 net/unix/af_unix.c --- lxc/net/unix/af_unix.c~C-elevate-writers-opens-part4 2006-08-01 16:35:09.000000000 -0700 +++ lxc-dave/net/unix/af_unix.c 2006-08-01 16:35:27.000000000 -0700 @@ -708,21 +708,27 @@ 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) { @@ -742,7 +748,9 @@ 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; _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |