From 52300eb17e8c1817b64c469af4af9adfc1f5be9b Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Sun, 11 Aug 2024 13:11:07 -0400 Subject: [PATCH] NFSD: Fix NFSv4's PUTPUBFH operation commit 202f39039a11402dcbcd5fece8d9fa6be83f49ae upstream. According to RFC 8881, all minor versions of NFSv4 support PUTPUBFH. Replace the XDR decoder for PUTPUBFH with a "noop" since we no longer want the minorversion check, and PUTPUBFH has no arguments to decode. (Ideally nfsd4_decode_noop should really be called nfsd4_decode_void). PUTPUBFH should now behave just like PUTROOTFH. Reported-by: Cedric Blancher Fixes: e1a90ebd8b23 ("NFSD: Combine decode operations for v4 and v4.1") Cc: Dan Shelton Cc: Roland Mainz Cc: stable@vger.kernel.org [ cel: adjusted to apply to origin/linux-5.4.y ] Signed-off-by: Chuck Lever Signed-off-by: Greg Kroah-Hartman --- fs/nfsd/nfs4xdr.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 1d24fff2709c..55b18c145390 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1068,14 +1068,6 @@ nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) DECODE_TAIL; } -static __be32 -nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) -{ - if (argp->minorversion == 0) - return nfs_ok; - return nfserr_notsupp; -} - static __be32 nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) { @@ -1825,7 +1817,7 @@ static const nfsd4_dec nfsd4_dec_ops[] = { [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, - [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, + [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, [OP_READ] = (nfsd4_dec)nfsd4_decode_read, [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir,