4f02dd5755
To pave the way to reducing app's kernel attack surface, this change split the single filter into one for system and one for apps. Note that there is current no change between them. Zygote will apply these filters appropriately to system server and apps. Keep set_seccomp_filter() for now until the caller has switched to the new API, which I will do immediately after this before the two filters diverse. Also remove get_seccomp_filter() since it doesn't seem to be used anyway. Test: diff the generated code, no difference except the variable names Test: cts -m CtsSecurityTestCases -t android.security.cts.SeccompTest Bug: 63944145 Change-Id: Id8ba05a87332c92ec697926af77bc5742eb04b23
26 lines
1.2 KiB
Text
26 lines
1.2 KiB
Text
# This file is used to populate seccomp's whitelist policy in combination with SYSCALLS.TXT.
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# Note that the resultant policy is applied only to zygote spawned processes.
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#
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# Each non-blank, non-comment line has the following format:
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#
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# return_type func_name[|alias_list][:syscall_name[:socketcall_id]]([parameter_list]) arch_list
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#
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# where:
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# arch_list ::= "all" | arch+
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# arch ::= "arm" | "arm64" | "mips" | "mips64" | "x86" | "x86_64"
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#
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# Note:
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# - syscall_name corresponds to the name of the syscall, which may differ from
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# the exported function name (example: the exit syscall is implemented by the _exit()
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# function, which is not the same as the standard C exit() function which calls it)
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# - alias_list is optional comma separated list of function aliases
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#
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# - The call_id parameter, given that func_name and syscall_name have
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# been provided, allows the user to specify dispatch style syscalls.
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# For example, socket() syscall on i386 actually becomes:
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# socketcall(__NR_socket, 1, *(rest of args on stack)).
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#
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# - Each parameter type is assumed to be stored in 32 bits.
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#
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# This file is processed by a python script named genseccomp.py.
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