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Commit c359cf3c authored by Jeff Layton's avatar Jeff Layton Committed by Steve French
Browse files

[CIFS] add hostname field to TCP_Server_Info struct 



...and populate it with the hostname portion of the UNC string.

Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
Signed-off-by: default avatarSteve French <sfrench@us.ibm.com>
parent 70fe7dc0

fs/cifs/cifsglob.h

+1 −0
Original line number Diff line number Diff line
@@ -139,6 +139,7 @@ struct TCP_Server_Info { 
	/* 15 character server name + 0x20 16th byte indicating type = srv */

	char server_RFC1001_name[SERVER_NAME_LEN_WITH_NULL];

	char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2];

	char *hostname; /* hostname portion of UNC string */

	struct socket *ssocket;

	union {

		struct sockaddr_in sockAddr;

fs/cifs/connect.c

+36 −0
Original line number Diff line number Diff line
@@ -752,6 +752,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server) 
	}

	write_unlock(&GlobalSMBSeslock);



	kfree(server->hostname);

	kfree(server);

	if (length  > 0)

		mempool_resize(cifs_req_poolp, length + cifs_min_rcv,
@@ -760,6 +761,34 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server) 
	return 0;

}



/* extract the host portion of the UNC string */

static char *

extract_hostname(const char *unc)

{

	const char *src;

	char *dst, *delim;

	unsigned int len;



	/* skip double chars at beginning of string */

	/* BB: check validity of these bytes? */

	src = unc + 2;



	/* delimiter between hostname and sharename is always '\\' now */

	delim = strchr(src, '\\');

	if (!delim)

		return ERR_PTR(-EINVAL);



	len = delim - src;

	dst = kmalloc((len + 1), GFP_KERNEL);

	if (dst == NULL)

		return ERR_PTR(-ENOMEM);



	memcpy(dst, src, len);

	dst[len] = '\0';



	return dst;

}



static int

cifs_parse_mount_options(char *options, const char *devname,

			 struct smb_vol *vol)
@@ -1900,6 +1929,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, 
			/* BB Add code for ipv6 case too */

			srvTcp->ssocket = csocket;

			srvTcp->protocolType = IPV4;

			srvTcp->hostname = extract_hostname(volume_info.UNC);

			if (IS_ERR(srvTcp->hostname)) {

				rc = PTR_ERR(srvTcp->hostname);

				sock_release(csocket);

				goto out;

			}

			init_waitqueue_head(&srvTcp->response_q);

			init_waitqueue_head(&srvTcp->request_q);

			INIT_LIST_HEAD(&srvTcp->pending_mid_q);
@@ -1914,6 +1949,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, 
				cERROR(1, ("error %d create cifsd thread", rc));

				srvTcp->tsk = NULL;

				sock_release(csocket);

				kfree(srvTcp->hostname);

				goto out;

			}

			wait_for_completion(&cifsd_complete);