Apple Mac OS X Server (version 10.2.3 or later) Uživatelský manuál Strana 120

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120 Chapter 3
m A non-Apple LDAP server can be used to validate the password.
Information Access Control
All directories (folders) and files on Mac OS X computers have access privileges for the file’s
owner, a group, and everyone else.
Mac OS X uses a particular data item in a user’s account—the UID—to keep track of directory
and file access privileges.
Directory and File Owner Access
When a directory or file is created, the file system stores the UID of the user who created it.
When a user with that UID accesses the directory or file, he or she has read and write
privileges to it by default. In addition, any process started by the creator has read and write
privileges to any files associated with the creator’s UID.
If you change a user’s UID, the user may no longer be able to modify or even access files and
directories he or she created. Likewise, if the user logs in as a user whose UID is different
from the UID he or she used to create the files and directories, the user will no longer have
owner access privileges for them.
Directory
services
Password Serve
r
Kerberos server
Directory server
User
account
Password provided
can be validated
using value stored
in account.
Password can also
be validated using
value stored on
another server on
the network.
Owner 127 can: Read & Writ
e
Group 2017 can: Read only
Ever
y
one else can: None
MyDoc
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