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Added new parameter 'api' to sparse_copy function to specify
underlying filemap API to use. By default sparse_copy will
try both available APIs.
Added test case for sparse_copy to wic test suite.
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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FIEMAP API is not supported by tmpfs file system, but
SEEK_HOLE/SEEK_DATA is supported.
Returned back FilemapSeek class that implements support
of SEEK_HOLE/SEEK_DATA API to make sparse_copy API working
on tmpfs again.
This reverts commit 6b80c13f7a82a312a3b981de5a56c66466ba1fac.
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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FIEMAP API was added to Linux kernel 2.6.28 back in 2008
SEEK_HOLE and SEEK_DATA API was added much letter.
As FIEMAP is used by filemap module as a default API it's
safe to remove FileMpSeek class as it's never used.
[YOCTO #10618]
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
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sparse_copy creates output file that is smaller than input
file when input file ends with unmapped blocks.
Used truncate(<input file size>) when output file is created
to ensure the size of output file will always be equal to
the size of input file.
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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This patches removes the empty space in front of the copied file which
was skipped. Without this reduction it's not possible to place a
partition with rawcopy and skip parameter on a desired alignment.
Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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Generators in Python 3 don't have .next method. It's recommended
to use 'next' builtin instead. As it also present in Python >= 2.6
it should make wic code compatible with both Python 2 and Python 3.
[YOCTO #9412]
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Division operator works differently in Python 3. It results in
float unlike in Python 2, where it results in int.
Explicitly used "floor division" operator instead of 'division'
operator. This should make the code to result in integer under
both pythons.
[YOCTO #9412]
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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In order to make wic images sparse sparse_copy function has been
copied from meta-ostro:
https://github.com/kad/meta-ostro/blob/master/meta-ostro/lib/image-dsk.py
This function uses filemap APIs to copy source sparse file into
destination file preserving sparseness.
The function has been modified to satisfy wic requirements:
parameter 'skip' has been added.
[YOCTO #9099]
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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In order to make wic images sparse set of APIs has been copied
from bmap-tools project.
filemap.py module is taken from bmap-tools project:
https://github.com/01org/bmap-tools/blob/master/bmaptools/Filemap.py
It implements two ways of get information about file block: FIEMAP
ioctl and the 'SEEK_HOLE / SEEK_DATA' features of the file seek
syscall.
Note that this module will be removed as soon as bmaptool utility
supports copying sparse source file into destination file (this is
already agreed with the maintainer of bmap-tools project).
[YOCTO #9099]
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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