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authorLinus Torvalds <torvalds@linux-foundation.org>2020-10-22 19:44:27 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-22 19:44:27 +0300
commit24717cfbbbbfa415d1e3dca0f21c417e5faf8208 (patch)
tree8fafaa269b3e5fde06ebc9bedd8c7a9ffd20b816 /net/sunrpc/auth_gss
parent9b06f57b9edb2d67471e626b3ebd247826729a7f (diff)
parent0cfcd405e758ba1d277e58436fb32f06888c3e41 (diff)
downloadlinux-24717cfbbbbfa415d1e3dca0f21c417e5faf8208.tar.xz
Merge tag 'nfsd-5.10' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields: "The one new feature this time, from Anna Schumaker, is READ_PLUS, which has the same arguments as READ but allows the server to return an array of data and hole extents. Otherwise it's a lot of cleanup and bugfixes" * tag 'nfsd-5.10' of git://linux-nfs.org/~bfields/linux: (43 commits) NFSv4.2: Fix NFS4ERR_STALE error when doing inter server copy SUNRPC: fix copying of multiple pages in gss_read_proxy_verf() sunrpc: raise kernel RPC channel buffer size svcrdma: fix bounce buffers for unaligned offsets and multiple pages nfsd: remove unneeded break net/sunrpc: Fix return value for sysctl sunrpc.transports NFSD: Encode a full READ_PLUS reply NFSD: Return both a hole and a data segment NFSD: Add READ_PLUS hole segment encoding NFSD: Add READ_PLUS data support NFSD: Hoist status code encoding into XDR encoder functions NFSD: Map nfserr_wrongsec outside of nfsd_dispatch NFSD: Remove the RETURN_STATUS() macro NFSD: Call NFSv2 encoders on error returns NFSD: Fix .pc_release method for NFSv2 NFSD: Remove vestigial typedefs NFSD: Refactor nfsd_dispatch() error paths NFSD: Clean up nfsd_dispatch() variables NFSD: Clean up stale comments in nfsd_dispatch() NFSD: Clean up switch statement in nfsd_dispatch() ...
Diffstat (limited to 'net/sunrpc/auth_gss')
-rw-r--r--net/sunrpc/auth_gss/svcauth_gss.c27
1 files changed, 17 insertions, 10 deletions
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index 258b04372f85..bd4678db9d76 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -1147,9 +1147,9 @@ static int gss_read_proxy_verf(struct svc_rqst *rqstp,
struct gssp_in_token *in_token)
{
struct kvec *argv = &rqstp->rq_arg.head[0];
- unsigned int page_base, length;
- int pages, i, res;
- size_t inlen;
+ unsigned int length, pgto_offs, pgfrom_offs;
+ int pages, i, res, pgto, pgfrom;
+ size_t inlen, to_offs, from_offs;
res = gss_read_common_verf(gc, argv, authp, in_handle);
if (res)
@@ -1177,17 +1177,24 @@ static int gss_read_proxy_verf(struct svc_rqst *rqstp,
memcpy(page_address(in_token->pages[0]), argv->iov_base, length);
inlen -= length;
- i = 1;
- page_base = rqstp->rq_arg.page_base;
+ to_offs = length;
+ from_offs = rqstp->rq_arg.page_base;
while (inlen) {
- length = min_t(unsigned int, inlen, PAGE_SIZE);
- memcpy(page_address(in_token->pages[i]),
- page_address(rqstp->rq_arg.pages[i]) + page_base,
+ pgto = to_offs >> PAGE_SHIFT;
+ pgfrom = from_offs >> PAGE_SHIFT;
+ pgto_offs = to_offs & ~PAGE_MASK;
+ pgfrom_offs = from_offs & ~PAGE_MASK;
+
+ length = min_t(unsigned int, inlen,
+ min_t(unsigned int, PAGE_SIZE - pgto_offs,
+ PAGE_SIZE - pgfrom_offs));
+ memcpy(page_address(in_token->pages[pgto]) + pgto_offs,
+ page_address(rqstp->rq_arg.pages[pgfrom]) + pgfrom_offs,
length);
+ to_offs += length;
+ from_offs += length;
inlen -= length;
- page_base = 0;
- i++;
}
return 0;
}