A number of tools in recent Linux distributions (say, Fedora 16) rely
on file capabilities for correct operation. For example, "rlogin"
willonly work for regular uses when the "cap_net_bind_service"
capability is set:
-> getcap -v /usr/bin/rlogin
/usr/bin/rlogin = cap_net_bind_service+ep
Without this capability, non-root users will only get:
-> rlogin <name>
rcmd: socket: Permission denied
It appears that bacula does not save, and thus cannot restore, such
file capabilities.
The result is that any restore of a root file system will have a
(usually unknown) number of files that don't work correctly any more.
I searched the mailing list archives and the documentation, but could
not find any reference to dealing with file capabilities. Am I
missing something?
Is there a way to perform "correct" backups under Linux, i. e. to
backup and be able to restore things like ACLs and especially file
capabilities?
If not, are there any plans to add such a feature?
Note that this is probably a bigger problem - it appears that
neither cpio nor tar nor rsync etc. can deal with file capabilities.
At the moment I don't know how to create a 100% correct backup of a
plain vanilla Linux root filesystem... :-(
Happy new year, btw...
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
"I can call spirits from the vasty deep."
"Why so can I, or so can any man; but will they come when you do call
for them?" - Shakespeare, 1 King Henry IV, Act III, Scene I.
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