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strace: Implement dbgputstr syscall

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Ben Wiederhake 2021-11-24 19:52:34 +01:00 • committed by Andreas Kling
parent 33079c8ab9
commit 2dd5c7d2cc
1 changed files with 14 additions and 3 deletions
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17
Userland/Utilities/strace.cpp
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@ -355,13 +355,16 @@ public:
add_argument("{}", forward<T>(arg));
}
void add_string_argument(Syscall::StringArgument const& string_argument)
void add_string_argument(Syscall::StringArgument const& string_argument, StringView trim_by = {})
{
if (string_argument.characters == nullptr)
add_argument("null");
else {
auto string = copy_from_process(string_argument.characters, string_argument.length);
add_argument("\"{}\"", StringView(string.data(), string.size()));
auto string_buffer = copy_from_process(string_argument.characters, string_argument.length);
auto view = StringView(string_buffer);
if (!trim_by.is_empty())
view = view.trim(trim_by);
add_argument("\"{}\"", view);
}
}
@ -659,6 +662,11 @@ static void format_clock_gettime(FormattedSyscallBuilder& builder, clockid_t clo
builder.add_arguments(clockid_name(clockid), copy_from_process(time));
}
static void format_dbgputstr(FormattedSyscallBuilder& builder, char* characters, size_t size)
{
builder.add_string_argument({ characters, size }, "\0\n"sv);
}
static void format_syscall(FormattedSyscallBuilder& builder, Syscall::Function syscall_function, syscall_arg_t arg1, syscall_arg_t arg2, syscall_arg_t arg3, syscall_arg_t res)
{
enum ResultType {
@ -736,6 +744,9 @@ static void format_syscall(FormattedSyscallBuilder& builder, Syscall::Function s
case SC_clock_gettime:
format_clock_gettime(builder, (clockid_t)arg1, (struct timespec*)arg2);
break;
case SC_dbgputstr:
format_dbgputstr(builder, (char*)arg1, (size_t)arg2);
break;
case SC_getuid:
case SC_geteuid:
case SC_getgid: