From abf92485ae52bd637d544e2ac73147271b310a14 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 3 Jun 2009 15:48:08 -0400 Subject: [PATCH] Retry export if getfh fails. mountd tries to avoid telling the kernel to export something when the kernel already knows to do that. However sometimes (exportfs -r) the kernel can be told to forget something without mountd realising. So if mountd finds that it cannot get a valid filehandle, make sure it really has been exported to the kernel. This only applies if the nfsd filesystem is not mounted. Signed-off-by: NeilBrown Signed-off-by: Steve Dickson --- utils/mountd/mountd.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/utils/mountd/mountd.c b/utils/mountd/mountd.c index 25d292b..b59f939 100644 --- a/utils/mountd/mountd.c +++ b/utils/mountd/mountd.c @@ -467,8 +467,12 @@ get_rootfh(struct svc_req *rqstp, dirpath *path, nfs_export **expret, return NULL; } } else { - if (exp->m_exported<1) + int did_export = 0; + retry: + if (exp->m_exported<1) { export_export(exp); + did_export = 1; + } if (!exp->m_xtabent) xtab_append(exp); @@ -482,6 +486,11 @@ get_rootfh(struct svc_req *rqstp, dirpath *path, nfs_export **expret, fh = getfh_old ((struct sockaddr *) sin, stb.st_dev, stb.st_ino); } + if (fh == NULL && !did_export) { + exp->m_exported = 0; + goto retry; + } + if (fh == NULL) { xlog(L_WARNING, "getfh failed: %s", strerror(errno)); *error = NFSERR_ACCES; -- 2.39.2