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NFSD: Remove unused NFSv3 directory entry encoders
Clean up. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever
parent
7f87fc2d34
commit
1411934627
@ -148,16 +148,6 @@ svcxdr_encode_post_op_fh3(struct xdr_stream *xdr, const struct svc_fh *fhp)
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return true;
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}
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static __be32 *
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encode_fh(__be32 *p, struct svc_fh *fhp)
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{
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unsigned int size = fhp->fh_handle.fh_size;
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*p++ = htonl(size);
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if (size) p[XDR_QUADLEN(size)-1]=0;
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memcpy(p, &fhp->fh_handle.fh_base, size);
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return p + XDR_QUADLEN(size);
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}
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static bool
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svcxdr_encode_cookieverf3(struct xdr_stream *xdr, const __be32 *verf)
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{
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@ -1164,20 +1154,6 @@ nfs3svc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p)
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return 1;
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}
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static __be32 *
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encode_entry_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name,
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int namlen, u64 ino)
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{
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*p++ = xdr_one; /* mark entry present */
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p = xdr_encode_hyper(p, ino); /* file id */
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p = xdr_encode_array(p, name, namlen);/* name length & name */
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cd->offset = p; /* remember pointer */
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p = xdr_encode_hyper(p, NFS_OFFSET_MAX);/* offset of next entry */
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return p;
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}
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static __be32
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compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp,
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const char *name, int namlen, u64 ino)
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@ -1216,26 +1192,6 @@ out:
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return rv;
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}
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static __be32 *encode_entryplus_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, int namlen, u64 ino)
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{
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struct svc_fh *fh = &cd->scratch;
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__be32 err;
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fh_init(fh, NFS3_FHSIZE);
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err = compose_entry_fh(cd, fh, name, namlen, ino);
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if (err) {
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*p++ = 0;
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*p++ = 0;
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goto out;
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}
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p = encode_post_op_attr(cd->rqstp, p, fh);
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*p++ = xdr_one; /* yes, a file handle follows */
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p = encode_fh(p, fh);
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out:
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fh_put(fh);
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return p;
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}
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/**
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* nfs3svc_encode_cookie3 - Encode a directory offset cookie
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* @resp: readdir result context
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@ -1255,152 +1211,6 @@ void nfs3svc_encode_cookie3(struct nfsd3_readdirres *resp, u64 offset)
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resp->cookie_offset = 0;
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}
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/*
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* Encode a directory entry. This one works for both normal readdir
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* and readdirplus.
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* The normal readdir reply requires 2 (fileid) + 1 (stringlen)
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* + string + 2 (cookie) + 1 (next) words, i.e. 6 + strlen.
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*
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* The readdirplus baggage is 1+21 words for post_op_attr, plus the
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* file handle.
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*/
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#define NFS3_ENTRY_BAGGAGE (2 + 1 + 2 + 1)
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#define NFS3_ENTRYPLUS_BAGGAGE (1 + 21 + 1 + (NFS3_FHSIZE >> 2))
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static int
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encode_entry(struct readdir_cd *ccd, const char *name, int namlen,
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loff_t offset, u64 ino, unsigned int d_type, int plus)
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{
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struct nfsd3_readdirres *cd = container_of(ccd, struct nfsd3_readdirres,
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common);
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__be32 *p = cd->buffer;
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caddr_t curr_page_addr = NULL;
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struct page ** page;
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int slen; /* string (name) length */
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int elen; /* estimated entry length in words */
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int num_entry_words = 0; /* actual number of words */
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nfs3svc_encode_cookie3(cd, offset);
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/*
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dprintk("encode_entry(%.*s @%ld%s)\n",
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namlen, name, (long) offset, plus? " plus" : "");
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*/
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/* truncate filename if too long */
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namlen = min(namlen, NFS3_MAXNAMLEN);
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slen = XDR_QUADLEN(namlen);
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elen = slen + NFS3_ENTRY_BAGGAGE
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+ (plus? NFS3_ENTRYPLUS_BAGGAGE : 0);
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if (cd->buflen < elen) {
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cd->common.err = nfserr_toosmall;
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return -EINVAL;
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}
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/* determine which page in rq_respages[] we are currently filling */
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for (page = cd->rqstp->rq_respages + 1;
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page < cd->rqstp->rq_next_page; page++) {
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curr_page_addr = page_address(*page);
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if (((caddr_t)cd->buffer >= curr_page_addr) &&
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((caddr_t)cd->buffer < curr_page_addr + PAGE_SIZE))
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break;
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}
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if ((caddr_t)(cd->buffer + elen) < (curr_page_addr + PAGE_SIZE)) {
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/* encode entry in current page */
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p = encode_entry_baggage(cd, p, name, namlen, ino);
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if (plus)
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p = encode_entryplus_baggage(cd, p, name, namlen, ino);
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num_entry_words = p - cd->buffer;
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} else if (*(page+1) != NULL) {
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/* temporarily encode entry into next page, then move back to
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* current and next page in rq_respages[] */
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__be32 *p1, *tmp;
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int len1, len2;
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/* grab next page for temporary storage of entry */
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p1 = tmp = page_address(*(page+1));
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p1 = encode_entry_baggage(cd, p1, name, namlen, ino);
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if (plus)
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p1 = encode_entryplus_baggage(cd, p1, name, namlen, ino);
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/* determine entry word length and lengths to go in pages */
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num_entry_words = p1 - tmp;
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len1 = curr_page_addr + PAGE_SIZE - (caddr_t)cd->buffer;
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if ((num_entry_words << 2) < len1) {
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/* the actual number of words in the entry is less
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* than elen and can still fit in the current page
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*/
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memmove(p, tmp, num_entry_words << 2);
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p += num_entry_words;
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/* update offset */
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cd->offset = cd->buffer + (cd->offset - tmp);
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} else {
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unsigned int offset_r = (cd->offset - tmp) << 2;
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/* update pointer to offset location.
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* This is a 64bit quantity, so we need to
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* deal with 3 cases:
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* - entirely in first page
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* - entirely in second page
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* - 4 bytes in each page
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*/
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if (offset_r + 8 <= len1) {
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cd->offset = p + (cd->offset - tmp);
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} else if (offset_r >= len1) {
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cd->offset -= len1 >> 2;
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} else {
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/* sitting on the fence */
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BUG_ON(offset_r != len1 - 4);
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cd->offset = p + (cd->offset - tmp);
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cd->offset1 = tmp;
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}
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len2 = (num_entry_words << 2) - len1;
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/* move from temp page to current and next pages */
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memmove(p, tmp, len1);
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memmove(tmp, (caddr_t)tmp+len1, len2);
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p = tmp + (len2 >> 2);
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}
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}
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else {
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cd->common.err = nfserr_toosmall;
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return -EINVAL;
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}
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cd->count += num_entry_words;
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cd->buflen -= num_entry_words;
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cd->buffer = p;
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cd->common.err = nfs_ok;
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return 0;
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}
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int
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nfs3svc_encode_entry(void *cd, const char *name,
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int namlen, loff_t offset, u64 ino, unsigned int d_type)
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{
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return encode_entry(cd, name, namlen, offset, ino, d_type, 0);
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}
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int
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nfs3svc_encode_entry_plus(void *cd, const char *name,
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int namlen, loff_t offset, u64 ino,
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unsigned int d_type)
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{
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return encode_entry(cd, name, namlen, offset, ino, d_type, 1);
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}
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static bool
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svcxdr_encode_entry3_common(struct nfsd3_readdirres *resp, const char *name,
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int namlen, loff_t offset, u64 ino)
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@ -172,7 +172,6 @@ struct nfsd3_readdirres {
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/* Components of the reply */
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__be32 status;
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struct svc_fh fh;
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int count;
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__be32 verf[2];
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/* Used to encode the reply's entry list */
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@ -180,10 +179,6 @@ struct nfsd3_readdirres {
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struct xdr_buf dirlist;
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struct svc_fh scratch;
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struct readdir_cd common;
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__be32 * buffer;
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int buflen;
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__be32 * offset;
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__be32 * offset1;
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unsigned int cookie_offset;
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struct svc_rqst * rqstp;
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@ -305,12 +300,6 @@ void nfs3svc_release_fhandle(struct svc_rqst *);
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void nfs3svc_release_fhandle2(struct svc_rqst *);
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void nfs3svc_encode_cookie3(struct nfsd3_readdirres *resp, u64 offset);
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int nfs3svc_encode_entry(void *, const char *name,
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int namlen, loff_t offset, u64 ino,
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unsigned int);
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int nfs3svc_encode_entry_plus(void *, const char *name,
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int namlen, loff_t offset, u64 ino,
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unsigned int);
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int nfs3svc_encode_entry3(void *data, const char *name, int namlen,
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loff_t offset, u64 ino, unsigned int d_type);
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int nfs3svc_encode_entryplus3(void *data, const char *name, int namlen,
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