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Use the directory reader from libsquashfs instead.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Parallel unpacking didn't really improve the speed that much. Actually
sorting the files for optimized unpack order improved speed much more
than the parallel unpacker.
Furthermore, the fork based parallel unpacker was actually pretty messy
to begin with.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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This commit moves the file unpacking order & job scheduling to a libfstree
function. The ordering is improved by making sure fragment blocks are not
extracted more than once and files with data blocks are extracted in order.
This way, serial unpacking of a 2GiB Debian live image could be reduced
from ~5' on my test machine to ~3.5', whereas parallel unpacking stays
roughly the same (~3' for -j 4).
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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Should the main process exit (e.g. the user presses CTRL+C) or explcitily
sends it a signal, the desired behaviour is for the children to stop
unpacking and exit.
This commit adds a line to configure the kernel to send SIGKILL to the
children if their parent dies.
The same option also exists on various BSDs (not all of them) but with a
different name which has to be checked for and adjusted should the program
be required to run on one of those.
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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