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Userland: Add support for jails

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This happens in two ways:
1. LibCore now has two new methods for creating Jails and attaching
   processes to a Jail.
2. We introduce 3 new utilities - lsjails, jail-create and jails-attach,
   which list jails, create jails and attach processes to a Jail,
   respectively.
This commit is contained in:
Liav A
2022-11-02 22:28:58 +02:00
committed by Andrew Kaster
parent 1d0066a5cc
commit 8d8b0d0a34
9 changed files with 174 additions and 0 deletions
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14
Userland/Libraries/LibCore/System.cpp
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@@ -1000,6 +1000,20 @@ ErrorOr<void> exec_command(Vector<StringView>& command, bool preserve_env)
TRY(Core::System::exec(command.at(0), command, Core::System::SearchInPath::Yes, exec_environment));
return {};
}
ErrorOr<void> join_jail(u64 jail_index)
{
Syscall::SC_jail_attach_params params { jail_index };
int rc = syscall(SC_jail_attach, &params);
HANDLE_SYSCALL_RETURN_VALUE("jail_attach", rc, {});
}
ErrorOr<u64> create_jail(StringView jail_name)
{
Syscall::SC_jail_create_params params { 0, { jail_name.characters_without_null_termination(), jail_name.length() } };
int rc = syscall(SC_jail_create, &params);
HANDLE_SYSCALL_RETURN_VALUE("jail_create", rc, static_cast<u64>(params.index));
}
#endif
ErrorOr<void> exec(StringView filename, Span<StringView> arguments, SearchInPath search_in_path, Optional<Span<StringView>> environment)