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path: root/fs/nfsd/nfs3xdr.c
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Diffstat (limited to 'fs/nfsd/nfs3xdr.c')
-rw-r--r--fs/nfsd/nfs3xdr.c56
1 files changed, 27 insertions, 29 deletions
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 243d94b9653..247d518248b 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -330,6 +330,7 @@ nfs3svc_decode_readargs(struct svc_rqst *rqstp, u32 *p,
{
unsigned int len;
int v,pn;
+ u32 max_blocksize = svc_max_payload(rqstp);
if (!(p = decode_fh(p, &args->fh))
|| !(p = xdr_decode_hyper(p, &args->offset)))
@@ -337,17 +338,16 @@ nfs3svc_decode_readargs(struct svc_rqst *rqstp, u32 *p,
len = args->count = ntohl(*p++);
- if (len > NFSSVC_MAXBLKSIZE)
- len = NFSSVC_MAXBLKSIZE;
+ if (len > max_blocksize)
+ len = max_blocksize;
/* set up the kvec */
v=0;
while (len > 0) {
- pn = rqstp->rq_resused;
- svc_take_page(rqstp);
- args->vec[v].iov_base = page_address(rqstp->rq_respages[pn]);
- args->vec[v].iov_len = len < PAGE_SIZE? len : PAGE_SIZE;
- len -= args->vec[v].iov_len;
+ pn = rqstp->rq_resused++;
+ rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_respages[pn]);
+ rqstp->rq_vec[v].iov_len = len < PAGE_SIZE? len : PAGE_SIZE;
+ len -= rqstp->rq_vec[v].iov_len;
v++;
}
args->vlen = v;
@@ -359,6 +359,7 @@ nfs3svc_decode_writeargs(struct svc_rqst *rqstp, u32 *p,
struct nfsd3_writeargs *args)
{
unsigned int len, v, hdr;
+ u32 max_blocksize = svc_max_payload(rqstp);
if (!(p = decode_fh(p, &args->fh))
|| !(p = xdr_decode_hyper(p, &args->offset)))
@@ -373,22 +374,22 @@ nfs3svc_decode_writeargs(struct svc_rqst *rqstp, u32 *p,
rqstp->rq_arg.len - hdr < len)
return 0;
- args->vec[0].iov_base = (void*)p;
- args->vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr;
+ rqstp->rq_vec[0].iov_base = (void*)p;
+ rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr;
- if (len > NFSSVC_MAXBLKSIZE)
- len = NFSSVC_MAXBLKSIZE;
+ if (len > max_blocksize)
+ len = max_blocksize;
v= 0;
- while (len > args->vec[v].iov_len) {
- len -= args->vec[v].iov_len;
+ while (len > rqstp->rq_vec[v].iov_len) {
+ len -= rqstp->rq_vec[v].iov_len;
v++;
- args->vec[v].iov_base = page_address(rqstp->rq_argpages[v]);
- args->vec[v].iov_len = PAGE_SIZE;
+ rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_pages[v]);
+ rqstp->rq_vec[v].iov_len = PAGE_SIZE;
}
- args->vec[v].iov_len = len;
+ rqstp->rq_vec[v].iov_len = len;
args->vlen = v+1;
- return args->count == args->len && args->vec[0].iov_len > 0;
+ return args->count == args->len && rqstp->rq_vec[0].iov_len > 0;
}
int
@@ -446,11 +447,11 @@ nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, u32 *p,
* This page appears in the rq_res.pages list, but as pages_len is always
* 0, it won't get in the way
*/
- svc_take_page(rqstp);
len = ntohl(*p++);
if (len == 0 || len > NFS3_MAXPATHLEN || len >= PAGE_SIZE)
return 0;
- args->tname = new = page_address(rqstp->rq_respages[rqstp->rq_resused-1]);
+ args->tname = new =
+ page_address(rqstp->rq_respages[rqstp->rq_resused++]);
args->tlen = len;
/* first copy and check from the first page */
old = (char*)p;
@@ -522,8 +523,8 @@ nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, u32 *p,
{
if (!(p = decode_fh(p, &args->fh)))
return 0;
- svc_take_page(rqstp);
- args->buffer = page_address(rqstp->rq_respages[rqstp->rq_resused-1]);
+ args->buffer =
+ page_address(rqstp->rq_respages[rqstp->rq_resused++]);
return xdr_argsize_check(rqstp, p);
}
@@ -554,8 +555,8 @@ nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, u32 *p,
if (args->count > PAGE_SIZE)
args->count = PAGE_SIZE;
- svc_take_page(rqstp);
- args->buffer = page_address(rqstp->rq_respages[rqstp->rq_resused-1]);
+ args->buffer =
+ page_address(rqstp->rq_respages[rqstp->rq_resused++]);
return xdr_argsize_check(rqstp, p);
}
@@ -565,6 +566,7 @@ nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, u32 *p,
struct nfsd3_readdirargs *args)
{
int len, pn;
+ u32 max_blocksize = svc_max_payload(rqstp);
if (!(p = decode_fh(p, &args->fh)))
return 0;
@@ -573,13 +575,12 @@ nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, u32 *p,
args->dircount = ntohl(*p++);
args->count = ntohl(*p++);
- len = (args->count > NFSSVC_MAXBLKSIZE) ? NFSSVC_MAXBLKSIZE :
+ len = (args->count > max_blocksize) ? max_blocksize :
args->count;
args->count = len;
while (len > 0) {
- pn = rqstp->rq_resused;
- svc_take_page(rqstp);
+ pn = rqstp->rq_resused++;
if (!args->buffer)
args->buffer = page_address(rqstp->rq_respages[pn]);
len -= PAGE_SIZE;
@@ -668,7 +669,6 @@ nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, u32 *p,
rqstp->rq_res.page_len = resp->len;
if (resp->len & 3) {
/* need to pad the tail */
- rqstp->rq_restailpage = 0;
rqstp->rq_res.tail[0].iov_base = p;
*p = 0;
rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3);
@@ -693,7 +693,6 @@ nfs3svc_encode_readres(struct svc_rqst *rqstp, u32 *p,
rqstp->rq_res.page_len = resp->count;
if (resp->count & 3) {
/* need to pad the tail */
- rqstp->rq_restailpage = 0;
rqstp->rq_res.tail[0].iov_base = p;
*p = 0;
rqstp->rq_res.tail[0].iov_len = 4 - (resp->count & 3);
@@ -768,7 +767,6 @@ nfs3svc_encode_readdirres(struct svc_rqst *rqstp, u32 *p,
rqstp->rq_res.page_len = (resp->count) << 2;
/* add the 'tail' to the end of the 'head' page - page 0. */
- rqstp->rq_restailpage = 0;
rqstp->rq_res.tail[0].iov_base = p;
*p++ = 0; /* no more entries */
*p++ = htonl(resp->common.err == nfserr_eof);
generated by cgit (git 2.34.1) at 2025-01-07 16:53:47 +0000