Commit 82d101d5 authored by Chuck Lever's avatar Chuck Lever Committed by Trond Myklebust
Browse files

NFS: Show most mount options via nfs_show_options()



Display all mount options in /proc/mount which may be needed to reconstruct
a previous mount.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 3f8400d1
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+65 −2
Original line number Diff line number Diff line
@@ -441,10 +441,52 @@ static const char *nfs_pseudoflavour_to_name(rpc_authflavor_t flavour)
	return sec_flavours[i].str;
}

static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
				    int showdefaults)
{
	struct sockaddr *sap = (struct sockaddr *)&nfss->mountd_address;

	switch (sap->sa_family) {
	case AF_INET: {
		struct sockaddr_in *sin = (struct sockaddr_in *)sap;
		seq_printf(m, ",mountaddr=" NIPQUAD_FMT,
				NIPQUAD(sin->sin_addr.s_addr));
		break;
	}
	case AF_INET6: {
		struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
		seq_printf(m, ",mountaddr=" NIP6_FMT,
				NIP6(sin6->sin6_addr));
		break;
	}
	default:
		if (showdefaults)
			seq_printf(m, ",mountaddr=unspecified");
	}

	if (nfss->mountd_version || showdefaults)
		seq_printf(m, ",mountvers=%u", nfss->mountd_version);
	if (nfss->mountd_port || showdefaults)
		seq_printf(m, ",mountport=%u", nfss->mountd_port);

	switch (nfss->mountd_protocol) {
	case IPPROTO_UDP:
		seq_printf(m, ",mountproto=udp");
		break;
	case IPPROTO_TCP:
		seq_printf(m, ",mountproto=tcp");
		break;
	default:
		if (showdefaults)
			seq_printf(m, ",mountproto=auto");
	}
}

/*
 * Describe the mount options in force on this server representation
 */
static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss, int showdefaults)
static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
				   int showdefaults)
{
	static const struct proc_nfs_info {
		int flag;
@@ -452,6 +494,8 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
		const char *nostr;
	} nfs_info[] = {
		{ NFS_MOUNT_SOFT, ",soft", ",hard" },
		{ NFS_MOUNT_INTR, ",intr", ",nointr" },
		{ NFS_MOUNT_POSIX, ",posix", "" },
		{ NFS_MOUNT_NOCTO, ",nocto", "" },
		{ NFS_MOUNT_NOAC, ",noac", "" },
		{ NFS_MOUNT_NONLM, ",nolock", "" },
@@ -462,10 +506,14 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
	};
	const struct proc_nfs_info *nfs_infop;
	struct nfs_client *clp = nfss->nfs_client;
	u32 version = clp->rpc_ops->version;

	seq_printf(m, ",vers=%u", clp->rpc_ops->version);
	seq_printf(m, ",vers=%u", version);
	seq_printf(m, ",rsize=%u", nfss->rsize);
	seq_printf(m, ",wsize=%u", nfss->wsize);
	if (nfss->bsize != 0)
		seq_printf(m, ",bsize=%u", nfss->bsize);
	seq_printf(m, ",namlen=%u", nfss->namelen);
	if (nfss->acregmin != 3*HZ || showdefaults)
		seq_printf(m, ",acregmin=%u", nfss->acregmin/HZ);
	if (nfss->acregmax != 60*HZ || showdefaults)
@@ -482,9 +530,24 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
	}
	seq_printf(m, ",proto=%s",
		   rpc_peeraddr2str(nfss->client, RPC_DISPLAY_PROTO));
	if (version == 4) {
		if (nfss->port != NFS_PORT)
			seq_printf(m, ",port=%u", nfss->port);
	} else
		if (nfss->port)
			seq_printf(m, ",port=%u", nfss->port);

	seq_printf(m, ",timeo=%lu", 10U * nfss->client->cl_timeout->to_initval / HZ);
	seq_printf(m, ",retrans=%u", nfss->client->cl_timeout->to_retries);
	seq_printf(m, ",sec=%s", nfs_pseudoflavour_to_name(nfss->client->cl_auth->au_flavor));

	if (version != 4)
		nfs_show_mountd_options(m, nfss, showdefaults);

#ifdef CONFIG_NFS_V4
	if (clp->rpc_ops->version == 4)
		seq_printf(m, ",clientaddr=%s", clp->cl_ipaddr);
#endif
}

/*