On Wed, 2021-07-07 at 11:53 +0800, Xiubo Li wrote:
> On 6/25/21 9:58 PM, Jeff Layton wrote:
> > ...and store them in the ceph_inode_info.
> >
> > Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
> > ---
> > fs/ceph/file.c | 2 ++
> > fs/ceph/inode.c | 18 ++++++++++++++++++
> > fs/ceph/mds_client.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
> > fs/ceph/mds_client.h | 4 ++++
> > fs/ceph/super.h | 6 ++++++
> > 5 files changed, 74 insertions(+)
> >
> > diff --git a/fs/ceph/file.c b/fs/ceph/file.c
> > index 2cda398ba64d..ea0e85075b7b 100644
> > --- a/fs/ceph/file.c
> > +++ b/fs/ceph/file.c
> > @@ -592,6 +592,8 @@ static int ceph_finish_async_create(struct inode *dir, struct inode *inode,
> > iinfo.xattr_data = xattr_buf;
> > memset(iinfo.xattr_data, 0, iinfo.xattr_len);
> >
> > + /* FIXME: set fscrypt_auth and fscrypt_file */
> > +
> > in.ino = cpu_to_le64(vino.ino);
> > in.snapid = cpu_to_le64(CEPH_NOSNAP);
> > in.version = cpu_to_le64(1); // ???
> > diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
> > index f62785e4dbcb..b620281ea65b 100644
> > --- a/fs/ceph/inode.c
> > +++ b/fs/ceph/inode.c
> > @@ -611,6 +611,13 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
> >
> > ci->i_meta_err = 0;
> >
> > +#ifdef CONFIG_FS_ENCRYPTION
> > + ci->fscrypt_auth = NULL;
> > + ci->fscrypt_auth_len = 0;
> > + ci->fscrypt_file = NULL;
> > + ci->fscrypt_file_len = 0;
> > +#endif
> > +
> > return &ci->vfs_inode;
> > }
> >
> > @@ -619,6 +626,9 @@ void ceph_free_inode(struct inode *inode)
> > struct ceph_inode_info *ci = ceph_inode(inode);
> >
> > kfree(ci->i_symlink);
> > +#ifdef CONFIG_FS_ENCRYPTION
> > + kfree(ci->fscrypt_auth);
> > +#endif
> > kmem_cache_free(ceph_inode_cachep, ci);
> > }
> >
> > @@ -1021,6 +1031,14 @@ int ceph_fill_inode(struct inode *inode, struct page *locked_page,
> > xattr_blob = NULL;
> > }
> >
> > + if (iinfo->fscrypt_auth_len && !ci->fscrypt_auth) {
> > + ci->fscrypt_auth_len = iinfo->fscrypt_auth_len;
> > + ci->fscrypt_auth = iinfo->fscrypt_auth;
> > + iinfo->fscrypt_auth = NULL;
> > + iinfo->fscrypt_auth_len = 0;
> > + inode_set_flags(inode, S_ENCRYPTED, S_ENCRYPTED);
> > + }
> > +
> > /* finally update i_version */
> > if (le64_to_cpu(info->version) > ci->i_version)
> > ci->i_version = le64_to_cpu(info->version);
> > diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
> > index 3b3a14024ca0..9c994effc51d 100644
> > --- a/fs/ceph/mds_client.c
> > +++ b/fs/ceph/mds_client.c
> > @@ -183,8 +183,48 @@ static int parse_reply_info_in(void **p, void *end,
> > info->rsnaps = 0;
> > }
> >
> > + if (struct_v >= 5) {
> > + u32 alen;
> > +
> > + ceph_decode_32_safe(p, end, alen, bad);
> > +
> > + while (alen--) {
> > + u32 len;
> > +
> > + /* key */
> > + ceph_decode_32_safe(p, end, len, bad);
> > + ceph_decode_skip_n(p, end, len, bad);
> > + /* value */
> > + ceph_decode_32_safe(p, end, len, bad);
> > + ceph_decode_skip_n(p, end, len, bad);
> > + }
> > + }
> > +
> > + /* fscrypt flag -- ignore */
> > + if (struct_v >= 6)
> > + ceph_decode_skip_8(p, end, bad);
> > +
> > + if (struct_v >= 7) {
> > + ceph_decode_32_safe(p, end, info->fscrypt_auth_len, bad);
> > + if (info->fscrypt_auth_len) {
> > + info->fscrypt_auth = kmalloc(info->fscrypt_auth_len, GFP_KERNEL);
> > + if (!info->fscrypt_auth)
> > + return -ENOMEM;
> > + ceph_decode_copy_safe(p, end, info->fscrypt_auth,
> > + info->fscrypt_auth_len, bad);
> > + }
> > + ceph_decode_32_safe(p, end, info->fscrypt_file_len, bad);
> > + if (info->fscrypt_file_len) {
> > + info->fscrypt_file = kmalloc(info->fscrypt_file_len, GFP_KERNEL);
> > + if (!info->fscrypt_file)
> > + return -ENOMEM;
>
> Should we kfree(info->fscrypt_auth) before return ?
>
> I didn't anywhere is freeing it.
>
It'll get freed in destroy_reply_info(). We could do it here, but it
should be fine to wait until we're tearing the "info" structure down.
>
>
> > + ceph_decode_copy_safe(p, end, info->fscrypt_file,
> > + info->fscrypt_file_len, bad);
> > + }
> > + }
> > *p = end;
> > } else {
> > + /* legacy (unversioned) struct */
> > if (features & CEPH_FEATURE_MDS_INLINE_DATA) {
> > ceph_decode_64_safe(p, end, info->inline_version, bad);
> > ceph_decode_32_safe(p, end, info->inline_len, bad);
> > @@ -625,6 +665,10 @@ static int parse_reply_info(struct ceph_mds_session *s, struct ceph_msg *msg,
> >
> > static void destroy_reply_info(struct ceph_mds_reply_info_parsed *info)
> > {
> > + kfree(info->diri.fscrypt_auth);
> > + kfree(info->diri.fscrypt_file);
> > + kfree(info->targeti.fscrypt_auth);
> > + kfree(info->targeti.fscrypt_file);
> > if (!info->dir_entries)
> > return;
> > free_pages((unsigned long)info->dir_entries, get_order(info->dir_buf_size));
> > diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h
> > index 64ea9d853b8d..0c3cc61fd038 100644
> > --- a/fs/ceph/mds_client.h
> > +++ b/fs/ceph/mds_client.h
> > @@ -88,6 +88,10 @@ struct ceph_mds_reply_info_in {
> > s32 dir_pin;
> > struct ceph_timespec btime;
> > struct ceph_timespec snap_btime;
> > + u8 *fscrypt_auth;
> > + u8 *fscrypt_file;
> > + u32 fscrypt_auth_len;
> > + u32 fscrypt_file_len;
> > u64 rsnaps;
> > u64 change_attr;
> > };
> > diff --git a/fs/ceph/super.h b/fs/ceph/super.h
> > index 0cd94b296f5f..e032737fe472 100644
> > --- a/fs/ceph/super.h
> > +++ b/fs/ceph/super.h
> > @@ -429,6 +429,12 @@ struct ceph_inode_info {
> >
> > #ifdef CONFIG_CEPH_FSCACHE
> > struct fscache_cookie *fscache;
> > +#endif
> > +#ifdef CONFIG_FS_ENCRYPTION
> > + u32 fscrypt_auth_len;
> > + u32 fscrypt_file_len;
> > + u8 *fscrypt_auth;
> > + u8 *fscrypt_file;
> > #endif
> > errseq_t i_meta_err;
> >
>
--
Jeff Layton <jlayton@xxxxxxxxxx>
