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If read_retry fails to read the expected amount of data (EOF or otherwise),
it is almost always an error.
This commit renames read_retry to read_data and moves error handling
into the function, making a lot of error handling code redundant.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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If write_retry fails to write everything, it is *always* an error.
This commit renames write_retry to write_data and moves error handling
into the function, making a lot of error handling code redundant.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Don't allocate the compressor structure twice.
Bug found using scan-build.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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This commit removes handling of compressor names from gensquashfs. Instead,
functions are added to libcompress to obtain name from ID, ID from name
and to print out defaults.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Always try to gather all compressor libraries available, but only
complain about missing a one if it has been *explicitly* selected.
If a compressor has been explicityl disabled, we can still turn it
off after checking.
Also, rework gensquashfs to set the default compressor based on
what's available.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- gensquashfs simply asks the backend compressor to write its options
to the file and does accounting
- rdsquasfs simply asks the backend compressor to transparentyl snort
the options from the file
- not implemented in any compressor backend yet
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Stick to the terminology that SquashFS uses. SquashFS uses "lzma" to
refere to lzma1, "xz" to refere to lzma2 and confusingly "gzip" to
refere to raw zlib deflate. We can avoid a lot of confusion by
_consistently_ using the same terminology.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Pass in an external destination buffer + size and allow for propper
bounds checking (especially when unpacking).
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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