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crash: Add option for pledge() violation

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Linus Groh 2021-01-25 22:43:54 +01:00 • committed by Andreas Kling
parent 629180b7d8
commit 6568cba731
1 changed files with 13 additions and 0 deletions
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13
Userland/Utilities/crash.cpp
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@ -121,6 +121,7 @@ int main(int argc, char** argv)
bool do_trigger_user_mode_instruction_prevention = false;
bool do_use_io_instruction = false;
bool do_read_cpu_counter = false;
bool do_pledge_violation = false;
auto args_parser = Core::ArgsParser();
args_parser.set_general_help(
@ -143,6 +144,7 @@ int main(int argc, char** argv)
args_parser.add_option(do_trigger_user_mode_instruction_prevention, "Attempt to trigger an x86 User Mode Instruction Prevention fault", nullptr, 'U');
args_parser.add_option(do_use_io_instruction, "Use an x86 I/O instruction in userspace", nullptr, 'I');
args_parser.add_option(do_read_cpu_counter, "Read the x86 TSC (Time Stamp Counter) directly", nullptr, 'c');
args_parser.add_option(do_pledge_violation, "Violate pledge()'d promises", nullptr, 'p');
if (argc != 2) {
args_parser.print_usage(stderr, argv[0]);
@ -325,5 +327,16 @@ int main(int argc, char** argv)
}).run(run_type);
}
if (do_pledge_violation || do_all_crash_types) {
Crash("Violate pledge()'d promises", [] {
if (pledge("", nullptr) < 0) {
perror("pledge");
return Crash::Failure::DidNotCrash;
}
printf("Didn't pledge 'stdio', this should fail!\n");
return Crash::Failure::DidNotCrash;
}).run(run_type);
}
return 0;
}