[PATCH] cifs-utils: Correct max string lengths

[scott.lovenberg at gmail.com]

From: Scott Lovenberg <scott.lovenberg at gmail.com>

The max size of the username, domain, password and share name strings
are now consistent with the kernel and Microsoft's documentation.

Signed-off-by: Scott Lovenberg <scott.lovenberg at gmail.com>
---
 AUTHORS      |  2 ++
 mount.cifs.c | 27 ++++++++++++++++++---------
 2 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/AUTHORS b/AUTHORS
index 2807079..2f6a14d 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -5,5 +5,7 @@ Shirish Pargaonkar <shirishpargaonkar at gmail.com>
 Suresh Jayaraman <sjayaraman at suse.de>
 Pavel Shilovsky <piastry at etersoft.ru>
 Igor Druzhinin <jaxbrigs at gmail.com>
+Scott Lovenberg <scott.lovenberg at gmail.com>
+
 
 ...and others.
diff --git a/mount.cifs.c b/mount.cifs.c
index 3b2b89e..8d975b3 100644
--- a/mount.cifs.c
+++ b/mount.cifs.c
@@ -83,22 +83,31 @@
 /* max length of mtab options */
 #define MTAB_OPTIONS_LEN 220
 
-/*
- * Maximum length of "share" portion of a UNC. I have no idea if this is at
- * all valid. According to MSDN, the typical max length of any component is
- * 255, so use that here.
+/* 
+ * Max share name, username, password and domain sizes match the kernel's 
+ * allowances for these string sizes which in turn match Microsoft's 
+ * documentation. 
  */
-#define MAX_SHARE_LEN 256
 
-/* max length of username (somewhat made up here) */
-#define MAX_USERNAME_SIZE 32
+/* Max length of the share name portion of a UNC.  According to Microsoft 
+ * this is correct for Windows 2000/XP. */
+#define MAX_SHARE_LEN 80
+
+/* Max user name length. */
+#define MAX_USERNAME_SIZE 256
+
+/* Max domain size. */
+#define MAX_DOMAIN_SIZE 256
+
+/* Max password size. */
+#define MOUNT_PASSWD_SIZE 512
+
+
 
 #ifndef SAFE_FREE
 #define SAFE_FREE(x) do { if ((x) != NULL) {free(x); x = NULL; } } while (0)
 #endif
 
-#define MOUNT_PASSWD_SIZE 128
-#define MAX_DOMAIN_SIZE 64
 
 /*
  * mount.cifs has been the subject of many "security" bugs that have arisen
-- 
1.8.1.4