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Large overhaul moves syscalls and arg types from sys to prog.
Sys package now depends on prog and contains only generated
descriptions of syscalls.
Introduce prog.Target type that encapsulates all targer properties,
like syscall list, ptr/page size, etc. Also moves OS-dependent pieces
like mmap call generation from prog to sys.
Update #191
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In preparation for moving sys types to prog
to avoid confusion between sys.Call and prog.Call.
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TestTransitivelyEnabledCalls detects when there is a resource
that has no ctors, but it does not provide any details
(e.g. resource name).
Add another test that detects exact resource that can't be created.
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Mark tests as parallel where makes sense.
Speed up sys.TransitivelyEnabledCalls.
Execution time is now:
ok github.com/google/syzkaller/config 0.172s
ok github.com/google/syzkaller/cover 0.060s
ok github.com/google/syzkaller/csource 3.081s
ok github.com/google/syzkaller/db 0.395s
ok github.com/google/syzkaller/executor 0.060s
ok github.com/google/syzkaller/fileutil 0.106s
ok github.com/google/syzkaller/host 1.530s
ok github.com/google/syzkaller/ifuzz 0.491s
ok github.com/google/syzkaller/ipc 1.374s
ok github.com/google/syzkaller/log 0.014s
ok github.com/google/syzkaller/prog 2.604s
ok github.com/google/syzkaller/report 0.045s
ok github.com/google/syzkaller/symbolizer 0.062s
ok github.com/google/syzkaller/sys 0.365s
ok github.com/google/syzkaller/syz-dash 0.014s
ok github.com/google/syzkaller/syz-hub/state 0.427s
ok github.com/google/syzkaller/vm 0.052s
However, main time is still taken by rebuilding sys package.
Fixes #182
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Currently we always enable clock_gettime in config.
This is required since the call is needed for generation of timespec/timeval structs.
The negative side effect is that one gets clock_gettime even
if he wants to fuzz a small set of unrelated syscalls.
Don't enable clock_gettime by default.
Instead handle timeval/timespec as other resources.
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Also detect transitively unsupported syscalls,
that is, syscalls for which all syscalls that can create
input arguments are disabled.
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