Samba Robert Eckstein, David (Web hosting ecommerce) Collier-Brown, Peter Kelly 1st
Samba Robert Eckstein, David Collier-Brown, Peter Kelly 1st Edition November 1999 1-56592-449-5, Order Number: 4495 416 pages, $34.95 Buy the hardcopy Table of Contents Chapter 5 Browsing and Advanced Disk Shares 5.4 Name Mangling and Case Back in the days of DOS and Windows 3.1, every filename was limited to eight upper-case characters, followed by a dot, and three more uppercase characters. This was known as the 8.3 format, and was a huge nuisance. Windows 95/98, Windows NT, and Unix have since relaxed this problem by allowing many more case-sensitive characters to make up a filename. Table 5.6 shows the current naming state of several popular operating systems. Table 5.6: Operating System Filename Limitations Operating System File Naming Rules DOS 6.22 or below Eight characters followed by a dot followed by a three-letter extension (8.3 format); case insensitive Windows 3.1 for Eight characters followed by a dot followed by a three-letter extension Workgroups (8.3 format); case insensitive Windows 95/98 127 characters; case sensitive Windows NT 127 characters; case sensitive Unix 255 characters; case sensitive Samba still has to remain backwards compatible with network clients who store files only in the 8.3 format, such as Windows for Workgroups. If a user creates a file on a share called antidisestablishmentarianism.txt, a Windows for Workgroups client couldn t tell it apart from another file in the same directory called antidisease.txt. Like Windows 95/98 and Windows NT, Samba has to employ a special methodology of translating a long filename to an 8.3 filename in such a way that similar filenames will not cause collisions. This is called name mangling, and Samba deals with this in a manner that is similar, but not identical to, Windows 95 and its successors. 165
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