Guys,
When restoring files from a streamed archived (i.e. via the option
-f -), it appears the parent subdirectories are restored with the user's ownership and umasked permissions (subject to any use of
--no-overwrite-dir). I'm using the latest tar, i.e. 1.28:
bnetst03:/usr/local/sbin/des_setup/svc # /usr/local/bin/tar --version
tar (GNU tar) 1.28
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by John Gilmore and Jay Fenlason.
bnetst03:/usr/local/sbin/des_setup/svc #
For example, we have the following directory:
bnetst03:/tmp # ls -l -d /etc /etc/opt /etc/opt/wbem
dr-xr-xr-x 40 root sys 8192 Sep 25 14:12 /etc
dr-xr-xr-x 25 bin bin 8192 Mar 13 2014 /etc/opt
drwxr-xr-x 2 cimsrvr bin 8192 Sep 25 12:37 /etc/opt/wbem
bnetst03:/tmp # ls -l /etc/opt/wbem
total 48
-rw-r--r-- 1 bin bin 150 Dec 1 2010 cimserver_retry.conf
-rw------- 1 cimsrvr cimsrvr 12 Sep 25 12:37 cimserver_start.conf
-r-xr--r-- 1 bin bin 759 Dec 1 2010 providerVersion
bnetst03:/tmp #
Tar-ing this small directory into an archive …
bnetst03:/ # /usr/local/tar cvf /tmp/t /etc/opt/wbem
etc/opt/wbem/
etc/opt/wbem/cimserver_retry.conf
etc/opt/wbem/providerVersion
etc/opt/wbem/cimserver_start.conf
bnetst03:/ #
We see that, upon restoring a
particular member of wbem/ from the archive presented through stdin, that member is restored with its correct metadata but its parent subdirectories are restored with the ownership of the session user and permissions as per its umask:
bnetst03:/tmp # cat /tmp/t | /usr/local/bin/tar xvf - etc/opt/wbem/cimserver_start.conf
etc/opt/wbem/cimserver_start.conf
bnetst03:/tmp # ls -l -d etc etc/opt etc/opt/wbem
drwx------ 3 root sys 96 Sep 25 14:37 etc
drwx------ 3 root sys 96 Sep 25 14:37 etc/opt
drwx------ 2 root sys 96 Sep 25 14:37 etc/opt/wbem
bnetst03:/tmp # ls -l etc/opt/wbem
total 16
-rw------- 1 cimsrvr cimsrvr 12 Sep 25 12:37 cimserver_start.conf
bnetst03:/tmp #
If the entire archive is extracted, only the
immediate parent subdirectory has its correct metadata, the others still appear with session user ownership and permissions:
bnetst03:/tmp # ls -l -d etc
drwx------ 3 root sys 96 Sep 25 14:47 etc
bnetst03:/tmp # ll -R etc
total 0
drwx------ 3 root sys 96 Sep 25 14:47 opt
etc/opt:
total 16
drwxr-xr-x 2 cimsrvr bin 8192 Sep 25 12:37 wbem
etc/opt/wbem:
total 48
-rw-r--r-- 1 bin bin 150 Dec 1 2010 cimserver_retry.conf
-rw------- 1 cimsrvr cimsrvr 12 Sep 25 12:37 cimserver_start.conf
-r-xr--r-- 1 bin bin 759 Dec 1 2010 providerVersion
bnetst03:/tmp #
Rocket J. Squirrel: "... we're
going to have to think!"
Bullwinkle J. Moose: "There
must be an easier way than that."
HOWARD BRYDEN
Senior Unix Administrator
Infrastructure Support
Public Safety Business Agency
PHONE: 07 3635 3087
POSTAL: GPO Box 1425, Brisbane,
QLD 4001 |
EMAIL: address@hidden
Great state. Great opportunity.
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