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Instead of generating Go files with descriptions
serialize them as gob and compress with flate.
This significantly reduces build time, go vet time,
and solves scalability problems with some static analysis tools.
Reference times (all after rm -rf ~/.cache/go-build) before:
TIME="%e %P %M" time go install ./syz-manager
48.29 577% 4824820
TIME="%e %P %M" time go test -c ./prog
56.28 380% 6973292
After:
TIME="%e %P %M" time go install ./syz-manager
22.81 865% 859788
TIME="%e %P %M" time go test -c ./prog
12.74 565% 267760
syz-manager size before/after: 194712597 -> 83418407
-57% even provided we now embed all descriptions
instead of just a single arch.
Deflate/decoding time for a single Linux arch is ~330ms.
Fixes #5542
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Disable the syscall in descriptions rather than in the code.
This makes it more visible for users that it's disabled,
and makes it less special (will not need to move this logic to host).
Also change the condition in syz-sysgen to be more precise,
otherwise syz_execute_func becomes unused function.
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These flags were identified using the same script as for sys/linux.
Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com>
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On the Linux, Darwin, and FreeBSD targets,
sockopt_opt_ip_group_source_req and sockopt_opt_ipv6_group_source_req
are equal. This commit consolidates those flag definitions to use a
single one and renames it to sockopt_opt_group_source_req.
Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com>
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Pretty much ripped from freebsd +/- what isn't applicable to darwin.
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To make MakeUnixNeutralizer work we need to have definitions of mmap
and friends, like MAP_FIXED.
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