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NFSD: MKNOD should return NFSERR_BADTYPE instead of NFSERR_INVAL

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A late paragraph of RFC 1813 Section 3.3.11 states:

| ... if the server does not support the target type or the
| target type is illegal, the error, NFS3ERR_BADTYPE, should
| be returned. Note that NF3REG, NF3DIR, and NF3LNK are
| illegal types for MKNOD.

The Linux NFS server incorrectly returns NFSERR_INVAL in these
cases.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Chuck Lever 2020-10-23 10:41:12 -04:00 committed by J. Bruce Fields
parent d321ff589c
commit 66d60e3ad1
1 changed files with 1 additions and 5 deletions
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6
fs/nfsd/nfs3proc.c
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@ -316,10 +316,6 @@ nfsd3_proc_mknod(struct svc_rqst *rqstp)
fh_copy(&resp->dirfh, &argp->fh);
fh_init(&resp->fh, NFS3_FHSIZE);
if (argp->ftype == 0 || argp->ftype >= NF3BAD) {
resp->status = nfserr_inval;
goto out;
}
if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) {
rdev = MKDEV(argp->major, argp->minor);
if (MAJOR(rdev) != argp->major ||
@ -328,7 +324,7 @@ nfsd3_proc_mknod(struct svc_rqst *rqstp)
goto out;
}
} else if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO) {
resp->status = nfserr_inval;
resp->status = nfserr_badtype;
goto out;
}