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Commit d0d6ab53 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 

Pull cifs version warning fix from Steve French:
 "As requested, additional kernel warning messages to clarify the
  default dialect changes"

[ There is still some discussion about exactly which version should be
  the new default.  Longer-term we have auto-negotiation coming, but
  that's not there yet..  - Linus ]

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  Fix warning messages when mounting to older servers
parents 54f70f52 7e682f76

fs/cifs/connect.c

+21 −1
Original line number Diff line number Diff line
@@ -1223,6 +1223,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, 
	char *tmp_end, *value;

	char delim;

	bool got_ip = false;

	bool got_version = false;

	unsigned short port = 0;

	struct sockaddr *dstaddr = (struct sockaddr *)&vol->dstaddr;
@@ -1874,24 +1875,35 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, 
				pr_warn("CIFS: server netbiosname longer than 15 truncated.\n");

			break;

		case Opt_ver:

			/* version of mount userspace tools, not dialect */

			string = match_strdup(args);

			if (string == NULL)

				goto out_nomem;



			/* If interface changes in mount.cifs bump to new ver */

			if (strncasecmp(string, "1", 1) == 0) {

				if (strlen(string) > 1) {

					pr_warn("Bad mount helper ver=%s. Did "

						"you want SMB1 (CIFS) dialect "

						"and mean to type vers=1.0 "

						"instead?\n", string);

					goto cifs_parse_mount_err;

				}

				/* This is the default */

				break;

			}

			/* For all other value, error */

			pr_warn("CIFS: Invalid version specified\n");

			pr_warn("CIFS: Invalid mount helper version specified\n");

			goto cifs_parse_mount_err;

		case Opt_vers:

			/* protocol version (dialect) */

			string = match_strdup(args);

			if (string == NULL)

				goto out_nomem;



			if (cifs_parse_smb_version(string, vol) != 0)

				goto cifs_parse_mount_err;

			got_version = true;

			break;

		case Opt_sec:

			string = match_strdup(args);
@@ -1973,6 +1985,14 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, 
	else if (override_gid == 1)

		pr_notice("CIFS: ignoring forcegid mount option specified with no gid= option.\n");



	if (got_version == false)

		pr_warn("No dialect specified on mount. Default has changed to "

			"a more secure dialect, SMB3 (vers=3.0), from CIFS "

			"(SMB1). To use the less secure SMB1 dialect to access "

			"old servers which do not support SMB3 specify vers=1.0"

			" on mount. For somewhat newer servers such as Windows "

			"7 try vers=2.1.\n");



	kfree(mountdata_copy);

	return 0;

fs/cifs/smb2pdu.c

+6 −1
Original line number Diff line number Diff line
@@ -514,7 +514,12 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) 
	 * No tcon so can't do

	 * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]);

	 */

	if (rc != 0)

	if (rc == -EOPNOTSUPP) {

		cifs_dbg(VFS, "Dialect not supported by server. Consider "

			"specifying vers=1.0 or vers=2.1 on mount for accessing"

			" older servers\n");

		goto neg_exit;

	} else if (rc != 0)

		goto neg_exit;



	cifs_dbg(FYI, "mode 0x%x\n", rsp->SecurityMode);