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Properly return an error reply if an NFS remove or link operation fails.

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Previously the failing operation would allocate an mbuf and construct an
error reply, but because the function did not return 0, the NFS server
assumed it had failed to generate a reply and would leak the reply mbuf as
well as not sending the reply to the NFS client.

PR:		kern/140853
Submitted by:	Ted Faber  faber at isi edu (remove)
Reviewed by:	rmacklem (remove)
MFC after:	1 week
This commit is contained in:
John Baldwin 2009-12-03 20:59:28 +00:00
parent 9fbbaac0bb
commit eb27d7fb1c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=200084
1 changed files with 3 additions and 4 deletions
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7
sys/nfsserver/nfs_serv.c
View file

@ -1810,10 +1810,9 @@ nfsrv_remove(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
}
ereply:
nfsm_reply(NFSX_WCCDATA(v3));
if (v3) {
if (v3)
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
error = 0;
}
error = 0;
nfsmout:
NDFREE(&nd, NDF_ONLY_PNBUF);
if (nd.ni_dvp) {
@ -2187,8 +2186,8 @@ nfsrv_link(struct nfsrv_descript *nfsd, struct nfssvc_sock *slp,
if (v3) {
nfsm_srvpostop_attr(getret, &at);
nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
error = 0;
}
error = 0;
/* fall through */
nfsmout: