62 lines
1.7 KiB
Python
62 lines
1.7 KiB
Python
# Description:
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# This VDSO is a shared library that provides the same interfaces as the
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# normal system VDSO (time, gettimeofday, clock_gettimeofday) but which uses
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# timekeeping parameters managed by the sandbox kernel.
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package(licenses = ["notice"])
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genrule(
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name = "vdso",
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srcs = [
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"barrier.h",
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"compiler.h",
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"cycle_clock.h",
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"seqlock.h",
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"syscalls.h",
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"vdso.cc",
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"vdso.lds",
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"vdso_time.h",
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"vdso_time.cc",
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],
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outs = [
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"vdso.so",
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],
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cmd = "$(CC) $(CC_FLAGS) " +
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"-I. " +
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"-O2 " +
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"-std=c++11 " +
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"-fPIC " +
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# Some toolchains enable stack protector by default. Disable it, the
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# VDSO has no hooks to handle failures.
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"-fno-stack-protector " +
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"-fuse-ld=gold " +
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"-m64 " +
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"-shared " +
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"-nostdlib " +
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"-Wl,-soname=linux-vdso.so.1 " +
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"-Wl,--hash-style=sysv " +
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"-Wl,--no-undefined " +
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"-Wl,-Bsymbolic " +
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"-Wl,-z,max-page-size=4096 " +
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"-Wl,-z,common-page-size=4096 " +
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"-Wl,-T$(location vdso.lds) " +
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"-o $(location vdso.so) " +
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"$(location vdso.cc) " +
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"$(location vdso_time.cc) " +
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"&& $(location :check_vdso) " +
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"--check-data " +
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"--vdso $(location vdso.so) ",
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features = ["-pie"],
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toolchains = ["@bazel_tools//tools/cpp:current_cc_toolchain"],
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tools = [
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":check_vdso",
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],
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visibility = ["//:sandbox"],
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)
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py_binary(
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name = "check_vdso",
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srcs = ["check_vdso.py"],
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visibility = ["//:sandbox"],
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)
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