proplist man page on DigitalUNIX

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proplist(4)							   proplist(4)

       proplist	 -  The	 storing,  parsing,  and  retrieving  of Extended File

       Tru64 UNIX supports the storing, parsing, and  retrieving  of  Extended
       File  Attributes.   An Extended File Attribute is a name and value pair
       that is contained in a variable-sized structure called a Property List.
       A  Property  List is part of a file's metadata and can contain abstract
       name and value pairs (Extended File Attributes) that can be set	either
       by  the	operating  system  (for	 example, ACLs and privileges) or by a
       user-level application (for example, PC File Attributes).

       Since Extended File Attributes are treated as an extension to a	file's
       metadata, they are synchronously updated, thereby ensuring consistency.
       Note that Extended File Attributes set by user-level  applications  are
       treated as opaque and can be virtually anything.

       To  ensure  that	 all Property List names are unique, you must register
       your Property List names with Compaq.  Those Property List names with a
       prefix  are  reserved  by  Compaq.   In	the  case of conflicts, Compaq
       reserves the right to arbitrate	the  naming  conventions  of  Property

       To  register a Property List name, send a request by network mail to or
       write to:

       Tru64 UNIX File System Group
       ATTN: Property List Administrator
       Compaq Computer Corporation
       110 Spit Brook Road
       Nashua, NH. 03062-2698
       M/S ZKO3-3/U14

       Several user-level routines, listed in the Related Information section,
       work  together to manipulate Extended File Attributes.  For example: To
       set attributes,	you  use  the  sizeof_proplist_entry(3)	 and  add_pro‐
       plist_entry(3)  routines to initialize the Extended File Attribute buf‐
       fer passed to setproplist(3) or fsetproplist(3).	 To fetch  attributes,
       you use getproplist(3) or fgetproplist(3).  To parse the attribute buf‐
       fer returned by setproplist(3) or  fsetproplist(3),  use	 the  get_pro‐
       plist_entry(3) routine.

       The  format  of	the Extended File Attributes buffer, the values of the
       system-wide properties, and the format of the Property List  structures
       are all defined in sys/proplist.h.

       Extended	 File  Attributes  are	supported  by the Advanced File System
       (AdvFS), the UNIX File System (UFS), and the Network File System (NFS).
       The  latter  through  the  use of the proplistd daemon and the mount -o
       proplist command.

       The archive utilities and support files with Extended File  Attributes.
       However,	 third-party  archive  utilities may not support Extended File
       Attributes and, consequently, if they are used on files	with  Extended
       File Attributes, the Extended File Attributes will be lost.

       Functions:   add_proplist_entry(3),   delproplist(3),  fdelproplist(3),
       fgetproplist(3),	  fsetproplist(3),   get_proplist_entry(3),    getpro‐
       plist(3), setproplist(3), sizeof_proplist_entry(3).

       Files: libproplist.a,, sys/proplist.h, acl(4).

       Daemons: proplistd(8).  delim off


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