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Diffstat (limited to 'fs/nfsd/nfsproc.c')
-rw-r--r--fs/nfsd/nfsproc.c92
1 files changed, 61 insertions, 31 deletions
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index 9473d048efec..b2f8035f166b 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -149,14 +149,15 @@ out:
static __be32
nfsd_proc_readlink(struct svc_rqst *rqstp)
{
- struct nfsd_readlinkargs *argp = rqstp->rq_argp;
+ struct nfsd_fhandle *argp = rqstp->rq_argp;
struct nfsd_readlinkres *resp = rqstp->rq_resp;
+ char *buffer = page_address(*(rqstp->rq_next_page++));
dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh));
/* Read the symlink. */
resp->len = NFS_MAXPATHLEN;
- resp->status = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len);
+ resp->status = nfsd_readlink(rqstp, &argp->fh, buffer, &resp->len);
fh_put(&argp->fh);
return rpc_success;
@@ -171,32 +172,36 @@ nfsd_proc_read(struct svc_rqst *rqstp)
{
struct nfsd_readargs *argp = rqstp->rq_argp;
struct nfsd_readres *resp = rqstp->rq_resp;
+ unsigned int len;
u32 eof;
+ int v;
dprintk("nfsd: READ %s %d bytes at %d\n",
SVCFH_fmt(&argp->fh),
argp->count, argp->offset);
+ argp->count = min_t(u32, argp->count, NFSSVC_MAXBLKSIZE_V2);
+
+ v = 0;
+ len = argp->count;
+ while (len > 0) {
+ struct page *page = *(rqstp->rq_next_page++);
+
+ rqstp->rq_vec[v].iov_base = page_address(page);
+ rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
+ len -= rqstp->rq_vec[v].iov_len;
+ v++;
+ }
+
/* Obtain buffer pointer for payload. 19 is 1 word for
* status, 17 words for fattr, and 1 word for the byte count.
*/
-
- if (NFSSVC_MAXBLKSIZE_V2 < argp->count) {
- char buf[RPC_MAX_ADDRBUFLEN];
- printk(KERN_NOTICE
- "oversized read request from %s (%d bytes)\n",
- svc_print_addr(rqstp, buf, sizeof(buf)),
- argp->count);
- argp->count = NFSSVC_MAXBLKSIZE_V2;
- }
svc_reserve_auth(rqstp, (19<<2) + argp->count + 4);
resp->count = argp->count;
- resp->status = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh),
- argp->offset,
- rqstp->rq_vec, argp->vlen,
- &resp->count,
- &eof);
+ fh_copy(&resp->fh, &argp->fh);
+ resp->status = nfsd_read(rqstp, &resp->fh, argp->offset,
+ rqstp->rq_vec, v, &resp->count, &eof);
if (resp->status == nfs_ok)
resp->status = fh_getattr(&resp->fh, &resp->stat);
else if (resp->status == nfserr_jukebox)
@@ -548,6 +553,20 @@ nfsd_proc_rmdir(struct svc_rqst *rqstp)
return rpc_success;
}
+static void nfsd_init_dirlist_pages(struct svc_rqst *rqstp,
+ struct nfsd_readdirres *resp,
+ int count)
+{
+ count = min_t(u32, count, PAGE_SIZE);
+
+ /* Convert byte count to number of words (i.e. >> 2),
+ * and reserve room for the NULL ptr & eof flag (-2 words) */
+ resp->buflen = (count >> 2) - 2;
+
+ resp->buffer = page_address(*rqstp->rq_next_page);
+ rqstp->rq_next_page++;
+}
+
/*
* Read a portion of a directory.
*/
@@ -556,31 +575,24 @@ nfsd_proc_readdir(struct svc_rqst *rqstp)
{
struct nfsd_readdirargs *argp = rqstp->rq_argp;
struct nfsd_readdirres *resp = rqstp->rq_resp;
- int count;
loff_t offset;
+ __be32 *buffer;
dprintk("nfsd: READDIR %s %d bytes at %d\n",
SVCFH_fmt(&argp->fh),
argp->count, argp->cookie);
- /* Shrink to the client read size */
- count = (argp->count >> 2) - 2;
-
- /* Make sure we've room for the NULL ptr & eof flag */
- count -= 2;
- if (count < 0)
- count = 0;
+ nfsd_init_dirlist_pages(rqstp, resp, argp->count);
+ buffer = resp->buffer;
- resp->buffer = argp->buffer;
resp->offset = NULL;
- resp->buflen = count;
resp->common.err = nfs_ok;
/* Read directory and encode entries on the fly */
offset = argp->cookie;
resp->status = nfsd_readdir(rqstp, &argp->fh, &offset,
&resp->common, nfssvc_encode_entry);
- resp->count = resp->buffer - argp->buffer;
+ resp->count = resp->buffer - buffer;
if (resp->offset)
*resp->offset = htonl(offset);
@@ -623,16 +635,18 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = 0,
+ .pc_name = "NULL",
},
[NFSPROC_GETATTR] = {
.pc_func = nfsd_proc_getattr,
- .pc_decode = nfssvc_decode_fhandle,
+ .pc_decode = nfssvc_decode_fhandleargs,
.pc_encode = nfssvc_encode_attrstat,
.pc_release = nfssvc_release_attrstat,
.pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT,
+ .pc_name = "GETATTR",
},
[NFSPROC_SETATTR] = {
.pc_func = nfsd_proc_setattr,
@@ -643,6 +657,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+AT,
+ .pc_name = "SETATTR",
},
[NFSPROC_ROOT] = {
.pc_func = nfsd_proc_root,
@@ -652,6 +667,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = 0,
+ .pc_name = "ROOT",
},
[NFSPROC_LOOKUP] = {
.pc_func = nfsd_proc_lookup,
@@ -662,15 +678,17 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_diropres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+FH+AT,
+ .pc_name = "LOOKUP",
},
[NFSPROC_READLINK] = {
.pc_func = nfsd_proc_readlink,
- .pc_decode = nfssvc_decode_readlinkargs,
+ .pc_decode = nfssvc_decode_fhandleargs,
.pc_encode = nfssvc_encode_readlinkres,
- .pc_argsize = sizeof(struct nfsd_readlinkargs),
+ .pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd_readlinkres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
+ .pc_name = "READLINK",
},
[NFSPROC_READ] = {
.pc_func = nfsd_proc_read,
@@ -681,6 +699,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_readres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
+ .pc_name = "READ",
},
[NFSPROC_WRITECACHE] = {
.pc_func = nfsd_proc_writecache,
@@ -690,6 +709,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = 0,
+ .pc_name = "WRITECACHE",
},
[NFSPROC_WRITE] = {
.pc_func = nfsd_proc_write,
@@ -700,6 +720,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+AT,
+ .pc_name = "WRITE",
},
[NFSPROC_CREATE] = {
.pc_func = nfsd_proc_create,
@@ -710,6 +731,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_diropres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+FH+AT,
+ .pc_name = "CREATE",
},
[NFSPROC_REMOVE] = {
.pc_func = nfsd_proc_remove,
@@ -719,6 +741,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_stat),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
+ .pc_name = "REMOVE",
},
[NFSPROC_RENAME] = {
.pc_func = nfsd_proc_rename,
@@ -728,6 +751,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_stat),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
+ .pc_name = "RENAME",
},
[NFSPROC_LINK] = {
.pc_func = nfsd_proc_link,
@@ -737,6 +761,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_stat),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
+ .pc_name = "LINK",
},
[NFSPROC_SYMLINK] = {
.pc_func = nfsd_proc_symlink,
@@ -746,6 +771,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_stat),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
+ .pc_name = "SYMLINK",
},
[NFSPROC_MKDIR] = {
.pc_func = nfsd_proc_mkdir,
@@ -756,6 +782,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_diropres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+FH+AT,
+ .pc_name = "MKDIR",
},
[NFSPROC_RMDIR] = {
.pc_func = nfsd_proc_rmdir,
@@ -765,6 +792,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_stat),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
+ .pc_name = "RMDIR",
},
[NFSPROC_READDIR] = {
.pc_func = nfsd_proc_readdir,
@@ -773,15 +801,17 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_argsize = sizeof(struct nfsd_readdirargs),
.pc_ressize = sizeof(struct nfsd_readdirres),
.pc_cachetype = RC_NOCACHE,
+ .pc_name = "READDIR",
},
[NFSPROC_STATFS] = {
.pc_func = nfsd_proc_statfs,
- .pc_decode = nfssvc_decode_fhandle,
+ .pc_decode = nfssvc_decode_fhandleargs,
.pc_encode = nfssvc_encode_statfsres,
.pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd_statfsres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+5,
+ .pc_name = "STATFS",
},
};
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