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ceph: initial CEPH_FEATURE_FS_FILE_LAYOUT_V2 support

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Add support for the format change of MClientReply/MclientCaps.
Also add code that denies access to inodes with pool_ns layouts.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
This commit is contained in:
Yan, Zheng
2016-02-14 18:06:41 +08:00
committed by Ilya Dryomov
parent fc77dbd34c
commit 5ea5c5e0a7
7 changed files with 49 additions and 3 deletions
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16
fs/ceph/mds_client.c
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@@ -100,6 +100,14 @@ static int parse_reply_info_in(void **p, void *end,
} else
info->inline_version = CEPH_INLINE_NONE;
if (features & CEPH_FEATURE_FS_FILE_LAYOUT_V2) {
ceph_decode_32_safe(p, end, info->pool_ns_len, bad);
ceph_decode_need(p, end, info->pool_ns_len, bad);
*p += info->pool_ns_len;
} else {
info->pool_ns_len = 0;
}
return 0;
bad:
return err;
@@ -2298,6 +2306,14 @@ int ceph_mdsc_do_request(struct ceph_mds_client *mdsc,
ceph_get_cap_refs(ceph_inode(req->r_old_dentry_dir),
CEPH_CAP_PIN);
/* deny access to directories with pool_ns layouts */
if (req->r_inode && S_ISDIR(req->r_inode->i_mode) &&
ceph_inode(req->r_inode)->i_pool_ns_len)
return -EIO;
if (req->r_locked_dir &&
ceph_inode(req->r_locked_dir)->i_pool_ns_len)
return -EIO;
/* issue */
mutex_lock(&mdsc->mutex);
__register_request(mdsc, req, dir);