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| author | Chuck Lever <chuck.lever@oracle.com> | 2023-10-04 16:41:57 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2023-10-16 19:44:34 +0300 |
| commit | 3fc5048cb39f24e6b7c465cd59fb8d454d401a4c (patch) | |
| tree | 4a8c1eeed802bace74c75028f712cb1d1eb08d66 /fs/nfsd | |
| parent | a0d042f823fd78eec9e762edd70db1cfa4e3df27 (diff) | |
| download | linux-3fc5048cb39f24e6b7c465cd59fb8d454d401a4c.tar.xz | |
NFSD: Add an nfsd4_encode_nfs_cookie4() helper
De-duplicate the entry4 cookie encoder, similar to the arrangement
for the NFSv2 and NFSv3 directory entry encoders.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 32 |
1 files changed, 20 insertions, 12 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index dc98215724cd..210cb924b9b4 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -3664,6 +3664,22 @@ __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, return ret; } +/* + * The buffer space for this field was reserved during a previous + * call to nfsd4_encode_entry4(). + */ +static void nfsd4_encode_entry4_nfs_cookie4(const struct nfsd4_readdir *readdir, + u64 offset) +{ + __be64 cookie = cpu_to_be64(offset); + struct xdr_stream *xdr = readdir->xdr; + + if (!readdir->cookie_offset) + return; + write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, &cookie, + sizeof(cookie)); +} + static inline int attributes_need_mount(u32 *bmval) { if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) @@ -3756,7 +3772,6 @@ nfsd4_encode_entry4(void *ccdv, const char *name, int namlen, u32 name_and_cookie; int entry_bytes; __be32 nfserr = nfserr_toosmall; - __be64 wire_offset; __be32 *p; /* In nfsv4, "." and ".." never make it onto the wire.. */ @@ -3765,11 +3780,8 @@ nfsd4_encode_entry4(void *ccdv, const char *name, int namlen, return 0; } - if (cd->cookie_offset) { - wire_offset = cpu_to_be64(offset); - write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, - &wire_offset, 8); - } + /* Encode the previous entry's cookie value */ + nfsd4_encode_entry4_nfs_cookie4(cd, offset); p = xdr_reserve_space(xdr, 4); if (!p) @@ -4451,7 +4463,6 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, int maxcount; int bytes_left; loff_t offset; - __be64 wire_offset; struct xdr_stream *xdr = resp->xdr; int starting_len = xdr->buf->len; __be32 *p; @@ -4509,11 +4520,8 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, if (nfserr) goto err_no_verf; - if (readdir->cookie_offset) { - wire_offset = cpu_to_be64(offset); - write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, - &wire_offset, 8); - } + /* Encode the final entry's cookie value */ + nfsd4_encode_entry4_nfs_cookie4(readdir, offset); p = xdr_reserve_space(xdr, 8); if (!p) { |