From 36022770de6cf9a403c40a68712ed2d2ea2746be Mon Sep 17 00:00:00 2001 From: Peng Tao Date: Sat, 26 Sep 2015 02:24:34 +0800 Subject: nfs42: add CLONE xdr functions xdr definitions per draft-ietf-nfsv4-minorversion2-38.txt Signed-off-by: Peng Tao Signed-off-by: Trond Myklebust --- include/linux/nfs4.h | 2 ++ include/linux/nfs_xdr.h | 19 +++++++++++++++++++ 2 files changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 00121f298269..c0c695b634d0 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -130,6 +130,7 @@ enum nfs_opnum4 { OP_READ_PLUS = 68, OP_SEEK = 69, OP_WRITE_SAME = 70, + OP_CLONE = 71, OP_ILLEGAL = 10044, }; @@ -501,6 +502,7 @@ enum { NFSPROC4_CLNT_ALLOCATE, NFSPROC4_CLNT_DEALLOCATE, NFSPROC4_CLNT_LAYOUTSTATS, + NFSPROC4_CLNT_CLONE, }; /* nfs41 types */ diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 52faf7e96c65..ac678b7a65ed 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -359,6 +359,25 @@ struct nfs42_layoutstat_data { struct nfs42_layoutstat_res res; }; +struct nfs42_clone_args { + struct nfs4_sequence_args seq_args; + struct nfs_fh *src_fh; + struct nfs_fh *dst_fh; + nfs4_stateid src_stateid; + nfs4_stateid dst_stateid; + __u64 src_offset; + __u64 dst_offset; + __u64 count; + const u32 *dst_bitmask; +}; + +struct nfs42_clone_res { + struct nfs4_sequence_res seq_res; + unsigned int rpc_status; + struct nfs_fattr *dst_fattr; + const struct nfs_server *server; +}; + struct stateowner_id { __u64 create_time; __u32 uniquifier; -- cgit v1.2.3 From e5341f3a5762d17be9cdd06257c02c0098bdcab8 Mon Sep 17 00:00:00 2001 From: Peng Tao Date: Sat, 26 Sep 2015 02:24:35 +0800 Subject: nfs42: add CLONE proc functions Signed-off-by: Peng Tao Signed-off-by: Trond Myklebust --- fs/nfs/nfs42.h | 1 + fs/nfs/nfs42proc.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++ fs/nfs/nfs4proc.c | 3 +- include/linux/nfs_fs_sb.h | 1 + 4 files changed, 75 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/fs/nfs/nfs42.h b/fs/nfs/nfs42.h index 814c1255f1d2..b587ccd31083 100644 --- a/fs/nfs/nfs42.h +++ b/fs/nfs/nfs42.h @@ -17,5 +17,6 @@ int nfs42_proc_deallocate(struct file *, loff_t, loff_t); loff_t nfs42_proc_llseek(struct file *, loff_t, int); int nfs42_proc_layoutstats_generic(struct nfs_server *, struct nfs42_layoutstat_data *); +int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t); #endif /* __LINUX_FS_NFS_NFS4_2_H */ diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index 0f020e4d8421..3e92a3cde15d 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -271,3 +271,74 @@ int nfs42_proc_layoutstats_generic(struct nfs_server *server, return PTR_ERR(task); return 0; } + +static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f, + struct file *dst_f, loff_t src_offset, + loff_t dst_offset, loff_t count) +{ + struct inode *src_inode = file_inode(src_f); + struct inode *dst_inode = file_inode(dst_f); + struct nfs_server *server = NFS_SERVER(dst_inode); + struct nfs42_clone_args args = { + .src_fh = NFS_FH(src_inode), + .dst_fh = NFS_FH(dst_inode), + .src_offset = src_offset, + .dst_offset = dst_offset, + .dst_bitmask = server->cache_consistency_bitmask, + }; + struct nfs42_clone_res res = { + .server = server, + }; + int status; + + msg->rpc_argp = &args; + msg->rpc_resp = &res; + + status = nfs42_set_rw_stateid(&args.src_stateid, src_f, FMODE_READ); + if (status) + return status; + + status = nfs42_set_rw_stateid(&args.dst_stateid, dst_f, FMODE_WRITE); + if (status) + return status; + + res.dst_fattr = nfs_alloc_fattr(); + if (!res.dst_fattr) + return -ENOMEM; + + status = nfs4_call_sync(server->client, server, msg, + &args.seq_args, &res.seq_res, 0); + if (status == 0) + status = nfs_post_op_update_inode(dst_inode, res.dst_fattr); + + kfree(res.dst_fattr); + return status; +} + +int nfs42_proc_clone(struct file *src_f, struct file *dst_f, + loff_t src_offset, loff_t dst_offset, loff_t count) +{ + struct rpc_message msg = { + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE], + }; + struct inode *inode = file_inode(src_f); + struct nfs_server *server = NFS_SERVER(file_inode(src_f)); + struct nfs4_exception exception = { }; + int err; + + if (!nfs_server_capable(inode, NFS_CAP_CLONE)) + return -EOPNOTSUPP; + + do { + err = _nfs42_proc_clone(&msg, src_f, dst_f, src_offset, + dst_offset, count); + if (err == -ENOTSUPP || err == -EOPNOTSUPP) { + NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE; + return -EOPNOTSUPP; + } + err = nfs4_handle_exception(server, err, &exception); + } while (exception.retry); + + return err; + +} diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 5133bb18830e..9688b1a9787f 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -8729,7 +8729,8 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | NFS_CAP_ALLOCATE | NFS_CAP_DEALLOCATE | NFS_CAP_SEEK - | NFS_CAP_LAYOUTSTATS, + | NFS_CAP_LAYOUTSTATS + | NFS_CAP_CLONE, .init_client = nfs41_init_client, .shutdown_client = nfs41_shutdown_client, .match_stateid = nfs41_match_stateid, diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 570a7df2775b..a50de1002b20 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -243,5 +243,6 @@ struct nfs_server { #define NFS_CAP_ALLOCATE (1U << 20) #define NFS_CAP_DEALLOCATE (1U << 21) #define NFS_CAP_LAYOUTSTATS (1U << 22) +#define NFS_CAP_CLONE (1U << 23) #endif -- cgit v1.2.3 From 2a92ee92d4545448066fb664674c0ae5a9d5ea99 Mon Sep 17 00:00:00 2001 From: Peng Tao Date: Sat, 26 Sep 2015 02:24:37 +0800 Subject: nfs: get clone_blksize when probing fsinfo NFSv42 CLONE operation is supposed to respect it. Signed-off-by: Peng Tao Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 1 + fs/nfs/nfs4proc.c | 1 + fs/nfs/nfs4xdr.c | 25 +++++++++++++++++++++++++ include/linux/nfs4.h | 1 + include/linux/nfs_fs_sb.h | 1 + include/linux/nfs_xdr.h | 1 + 6 files changed, 30 insertions(+) (limited to 'include/linux') diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 57c5a02f6213..d6d5d2a48e83 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -764,6 +764,7 @@ static void nfs_server_set_fsinfo(struct nfs_server *server, server->time_delta = fsinfo->time_delta; + server->clone_blksize = fsinfo->clone_blksize; /* We're airborne Set socket buffersize */ rpc_setbufsize(server->client, server->wsize + 100, server->rsize + 100); } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 9688b1a9787f..8814fbe62623 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -239,6 +239,7 @@ const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_FS_LAYOUT_TYPES, FATTR4_WORD2_LAYOUT_BLKSIZE + | FATTR4_WORD2_CLONE_BLKSIZE }; const u32 nfs4_fs_locations_bitmap[3] = { diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 868472b6b303..9f656791a338 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -4764,6 +4764,28 @@ static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, return 0; } +/* + * The granularity of a CLONE operation. + */ +static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap, + uint32_t *res) +{ + __be32 *p; + + dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); + *res = 0; + if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) { + p = xdr_inline_decode(xdr, 4); + if (unlikely(!p)) { + print_overflow_msg(__func__, xdr); + return -EIO; + } + *res = be32_to_cpup(p); + bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE; + } + return 0; +} + static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) { unsigned int savep; @@ -4796,6 +4818,9 @@ static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) if (status != 0) goto xdr_error; status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); + if (status) + goto xdr_error; + status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize); if (status) goto xdr_error; diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index c0c695b634d0..e7e78537aea2 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -422,6 +422,7 @@ enum lock_type4 { #define FATTR4_WORD2_LAYOUT_TYPES (1UL << 0) #define FATTR4_WORD2_LAYOUT_BLKSIZE (1UL << 1) #define FATTR4_WORD2_MDSTHRESHOLD (1UL << 4) +#define FATTR4_WORD2_CLONE_BLKSIZE (1UL << 13) #define FATTR4_WORD2_SECURITY_LABEL (1UL << 16) /* MDS threshold bitmap bits */ diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index a50de1002b20..2469ab0bb3a1 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -147,6 +147,7 @@ struct nfs_server { unsigned int acdirmax; unsigned int namelen; unsigned int options; /* extra options enabled by mount */ + unsigned int clone_blksize; /* granularity of a CLONE operation */ #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */ #define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */ diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index ac678b7a65ed..92ff445e60a0 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -141,6 +141,7 @@ struct nfs_fsinfo { __u32 lease_time; /* in seconds */ __u32 layouttype; /* supported pnfs layout driver */ __u32 blksize; /* preferred pnfs io block size */ + __u32 clone_blksize; /* granularity of a CLONE operation */ }; struct nfs_fsstat { -- cgit v1.2.3