Glenn Washburn 85307c34e8 loopback: Do not automaticaly replace existing loopback dev, error instead
If there is a loopback device with the same name as the one to be created,
instead of closing the old one and replacing it with the new one, return an
error instead. If the loopback device was created, its probably being used
by something and just replacing it may cause GRUB to crash unexpectedly.
This fixes obvious problems like "loopback d (d)/somefile". Its not too
onerous to force the user to delete the loopback first with the "-d" switch.

Signed-off-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2020-12-12 01:19:03 +01:00
2012-02-23 17:21:38 +01:00
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2017-01-30 19:38:55 +01:00
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2019-07-04 15:57:30 +02:00
2015-11-06 04:31:23 +01:00
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This is GRUB 2, the second version of the GRand Unified Bootloader.
GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more
robust, more powerful, and more portable.

See the file NEWS for a description of recent changes to GRUB 2.

See the file INSTALL for instructions on how to build and install the
GRUB 2 data and program files.

Please visit the official web page of GRUB 2, for more information.
The URL is <http://www.gnu.org/software/grub/grub.html>.

More extensive documentation is available in the Info manual,
accessible using 'info grub' after building and installing GRUB 2.

There are a number of important user-visible differences from the
first version of GRUB, now known as GRUB Legacy. For a summary, please
see:

  info grub Introduction 'Changes from GRUB Legacy'
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