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nfsd: Add support for CLAIM_DELEG_PREV_FH to the NFSv4.1/4.2 Open

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Commit b3d4c70dc6 added support for CLAIM_DELEG_CUR_FH to Open.
While doing this, I noticed that CLAIM_DELEG_PREV_FH support
could be added the same way.  Although I am not aware of any extant
NFSv4.1/4.2 client that uses this claim type, it seems prudent to add
support for this variant of Open to the NFSv4.1/4.2 server.

This patch does not affect mounts from extant NFSv4.1/4.2 clients,
as far as I know.

MFC after:	2 weeks
This commit is contained in:
Rick Macklem 2021-05-20 18:37:40 -07:00
parent d7751071bc
commit d80a903a1c
1 changed files with 4 additions and 2 deletions
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6
sys/fs/nfsserver/nfs_nfsdserv.c
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@ -2987,7 +2987,8 @@ nfsrvd_open(struct nfsrv_descript *nd, __unused int isdgram,
stateid.seqid = fxdr_unsigned(u_int32_t, *tl++);
NFSBCOPY((caddr_t)tl,(caddr_t)stateid.other,NFSX_STATEIDOTHER);
stp->ls_flags |= NFSLCK_DELEGCUR;
} else if (claim == NFSV4OPEN_CLAIMDELEGATEPREV) {
} else if (claim == NFSV4OPEN_CLAIMDELEGATEPREV || claim ==
NFSV4OPEN_CLAIMDELEGATEPREVFH) {
stp->ls_flags |= NFSLCK_DELEGPREV;
}
if (claim == NFSV4OPEN_CLAIMNULL || claim == NFSV4OPEN_CLAIMDELEGATECUR
@ -3057,7 +3058,8 @@ nfsrvd_open(struct nfsrv_descript *nd, __unused int isdgram,
&exclusive_flag, &nva, cverf, create, aclp, &attrbits,
nd->nd_cred, exp, &vp);
} else if (claim == NFSV4OPEN_CLAIMPREVIOUS || claim ==
NFSV4OPEN_CLAIMFH || claim == NFSV4OPEN_CLAIMDELEGATECURFH) {
NFSV4OPEN_CLAIMFH || claim == NFSV4OPEN_CLAIMDELEGATECURFH ||
claim == NFSV4OPEN_CLAIMDELEGATEPREVFH) {
if (claim == NFSV4OPEN_CLAIMPREVIOUS) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
i = fxdr_unsigned(int, *tl);