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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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4
fs/ceph/addr.c
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@ -1756,6 +1756,10 @@ int ceph_pool_perm_check(struct ceph_inode_info *ci, int need)
u32 pool;
int ret, flags;
/* does not support pool namespace yet */
if (ci->i_pool_ns_len)
return -EIO;
if (ceph_test_mount_opt(ceph_inode_to_client(&ci->vfs_inode),
NOPOOLPERM))
return 0;

27
fs/ceph/caps.c
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@ -2753,7 +2753,8 @@ static void handle_cap_grant(struct ceph_mds_client *mdsc,
void *inline_data, int inline_len,
struct ceph_buffer *xattr_buf,
struct ceph_mds_session *session,
struct ceph_cap *cap, int issued)
struct ceph_cap *cap, int issued,
u32 pool_ns_len)
__releases(ci->i_ceph_lock)
__releases(mdsc->snap_rwsem)
{
@ -2873,6 +2874,8 @@ static void handle_cap_grant(struct ceph_mds_client *mdsc,
if (newcaps & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR)) {
/* file layout may have changed */
ci->i_layout = grant->layout;
ci->i_pool_ns_len = pool_ns_len;
/* size/truncate_seq? */
queue_trunc = ceph_fill_file_size(inode, issued,
le32_to_cpu(grant->truncate_seq),
@ -3411,6 +3414,7 @@ void ceph_handle_caps(struct ceph_mds_session *session,
u32 inline_len = 0;
void *snaptrace;
size_t snaptrace_len;
u32 pool_ns_len = 0;
void *p, *end;
dout("handle_caps from mds%d\n", mds);
@ -3463,6 +3467,21 @@ void ceph_handle_caps(struct ceph_mds_session *session,
p += inline_len;
}
if (le16_to_cpu(msg->hdr.version) >= 8) {
u64 flush_tid;
u32 caller_uid, caller_gid;
u32 osd_epoch_barrier;
/* version >= 5 */
ceph_decode_32_safe(&p, end, osd_epoch_barrier, bad);
/* version >= 6 */
ceph_decode_64_safe(&p, end, flush_tid, bad);
/* version >= 7 */
ceph_decode_32_safe(&p, end, caller_uid, bad);
ceph_decode_32_safe(&p, end, caller_gid, bad);
/* version >= 8 */
ceph_decode_32_safe(&p, end, pool_ns_len, bad);
}
/* lookup ino */
inode = ceph_find_inode(sb, vino);
ci = ceph_inode(inode);
@ -3518,7 +3537,8 @@ void ceph_handle_caps(struct ceph_mds_session *session,
&cap, &issued);
handle_cap_grant(mdsc, inode, h,
inline_version, inline_data, inline_len,
msg->middle, session, cap, issued);
msg->middle, session, cap, issued,
pool_ns_len);
if (realm)
ceph_put_snap_realm(mdsc, realm);
goto done_unlocked;
@ -3542,7 +3562,8 @@ void ceph_handle_caps(struct ceph_mds_session *session,
issued |= __ceph_caps_dirty(ci);
handle_cap_grant(mdsc, inode, h,
inline_version, inline_data, inline_len,
msg->middle, session, cap, issued);
msg->middle, session, cap, issued,
pool_ns_len);
goto done_unlocked;
case CEPH_CAP_OP_FLUSH_ACK:

2
fs/ceph/inode.c
View File

@ -396,6 +396,7 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
ci->i_symlink = NULL;
memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout));
ci->i_pool_ns_len = 0;
ci->i_fragtree = RB_ROOT;
mutex_init(&ci->i_fragtree_mutex);
@ -756,6 +757,7 @@ static int fill_inode(struct inode *inode, struct page *locked_page,
if (ci->i_layout.fl_pg_pool != info->layout.fl_pg_pool)
ci->i_ceph_flags &= ~CEPH_I_POOL_PERM;
ci->i_layout = info->layout;
ci->i_pool_ns_len = iinfo->pool_ns_len;
queue_trunc = ceph_fill_file_size(inode, issued,
le32_to_cpu(info->truncate_seq),

16
fs/ceph/mds_client.c
View File

@ -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);

1
fs/ceph/mds_client.h
View File

@ -44,6 +44,7 @@ struct ceph_mds_reply_info_in {
u64 inline_version;
u32 inline_len;
char *inline_data;
u32 pool_ns_len;
};
/*

1
fs/ceph/super.h
View File

@ -287,6 +287,7 @@ struct ceph_inode_info {
struct ceph_dir_layout i_dir_layout;
struct ceph_file_layout i_layout;
size_t i_pool_ns_len;
char *i_symlink;
/* for dirs */

1
include/linux/ceph/ceph_features.h
View File

@ -75,6 +75,7 @@
#define CEPH_FEATURE_CRUSH_TUNABLES5 (1ULL<<58) /* chooseleaf stable mode */
// duplicated since it was introduced at the same time as CEPH_FEATURE_CRUSH_TUNABLES5
#define CEPH_FEATURE_NEW_OSDOPREPLY_ENCODING (1ULL<<58) /* New, v7 encoding */
#define CEPH_FEATURE_FS_FILE_LAYOUT_V2 (1ULL<<58) /* file_layout_t */
/*
* The introduction of CEPH_FEATURE_OSD_SNAPMAPPER caused the feature