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Commit d9345e0a authored by Paulo Alcantara's avatar Paulo Alcantara Committed by Steve French
Browse files

cifs: Make devname param optional in cifs_compose_mount_options() 



If we only want to get the mount options strings, do not return the
devname.

For DFS failover, we'll be passing the DFS full path down to
cifs_mount() rather than the devname.

Signed-off-by: default avatarPaulo Alcantara <palcantara@suse.de>
Reviewed-by: default avatarAurelien Aptel <aaptel@suse.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent c34fea5a

fs/cifs/cifs_dfs_ref.c

+12 −9
Original line number Diff line number Diff line
@@ -126,7 +126,7 @@ cifs_build_devname(char *nodename, const char *prepath) 
 * @sb_mountdata:	parent/root DFS mount options (template)

 * @fullpath:		full path in UNC format

 * @ref:		server's referral

 * @devname:		pointer for saving device name

 * @devname:		optional pointer for saving device name

 *

 * creates mount options for submount based on template options sb_mountdata

 * and replacing unc,ip,prefixpath options with ones we've got form ref_unc.
@@ -140,6 +140,7 @@ char *cifs_compose_mount_options(const char *sb_mountdata, 
				   char **devname)

{

	int rc;

	char *name;

	char *mountdata = NULL;

	const char *prepath = NULL;

	int md_len;
@@ -158,17 +159,17 @@ char *cifs_compose_mount_options(const char *sb_mountdata, 
			prepath++;

	}



	*devname = cifs_build_devname(ref->node_name, prepath);

	if (IS_ERR(*devname)) {

		rc = PTR_ERR(*devname);

		*devname = NULL;

	name = cifs_build_devname(ref->node_name, prepath);

	if (IS_ERR(name)) {

		rc = PTR_ERR(name);

		name = NULL;

		goto compose_mount_options_err;

	}



	rc = dns_resolve_server_name_to_ip(*devname, &srvIP);

	rc = dns_resolve_server_name_to_ip(name, &srvIP);

	if (rc < 0) {

		cifs_dbg(FYI, "%s: Failed to resolve server part of %s to IP: %d\n",

			 __func__, *devname, rc);

			 __func__, name, rc);

		goto compose_mount_options_err;

	}
@@ -224,6 +225,9 @@ char *cifs_compose_mount_options(const char *sb_mountdata, 
	strcat(mountdata, "ip=");

	strcat(mountdata, srvIP);



	if (devname)

		*devname = name;



	/*cifs_dbg(FYI, "%s: parent mountdata: %s\n", __func__, sb_mountdata);*/

	/*cifs_dbg(FYI, "%s: submount mountdata: %s\n", __func__, mountdata );*/
@@ -234,8 +238,7 @@ char *cifs_compose_mount_options(const char *sb_mountdata, 
compose_mount_options_err:

	kfree(mountdata);

	mountdata = ERR_PTR(rc);

	kfree(*devname);

	*devname = NULL;

	kfree(name);

	goto compose_mount_options_out;

}