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Shell: Fix another FdRedirection reference leak

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Add a create() factory function to prevent this from happening again.
This commit is contained in:
Andreas Kling 2020-08-12 12:13:33 +02:00
parent 2b51250863
commit e8d665337a
2 changed files with 26 additions and 13 deletions
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12
Shell/AST.cpp
View file

@ -718,7 +718,7 @@ void Fd2FdRedirection::dump(int level) const
RefPtr<Value> Fd2FdRedirection::run(RefPtr<Shell>)
{
Command command;
command.redirections.append(*new FdRedirection(source_fd, dest_fd, Rewiring::Close::None));
command.redirections.append(FdRedirection::create(source_fd, dest_fd, Rewiring::Close::None));
return create<CommandValue>(move(command));
}
@ -889,7 +889,7 @@ RefPtr<Value> Execute::run(RefPtr<Shell> shell)
}
auto& last_in_commands = commands.last();
last_in_commands.redirections.prepend(adopt(*new FdRedirection(STDOUT_FILENO, pipefd[1], Rewiring::Close::Destination)));
last_in_commands.redirections.prepend(FdRedirection::create(STDOUT_FILENO, pipefd[1], Rewiring::Close::Destination));
last_in_commands.should_wait = true;
last_in_commands.should_notify_if_in_background = false;
last_in_commands.is_pipe_source = false;
@ -1135,10 +1135,10 @@ RefPtr<Value> Pipe::run(RefPtr<Shell> shell)
auto last_in_left = left.take_last();
auto first_in_right = right.take_first();
auto pipe_write_end = new FdRedirection(STDIN_FILENO, -1, Rewiring::Close::Destination);
auto pipe_read_end = new FdRedirection(STDOUT_FILENO, -1, pipe_write_end, Rewiring::Close::RefreshDestination);
first_in_right.redirections.append(adopt(*pipe_write_end));
last_in_left.redirections.append(adopt(*pipe_read_end));
auto pipe_write_end = FdRedirection::create(STDIN_FILENO, -1, Rewiring::Close::Destination);
auto pipe_read_end = FdRedirection::create(STDOUT_FILENO, -1, pipe_write_end, Rewiring::Close::RefreshDestination);
first_in_right.redirections.append(pipe_write_end);
last_in_left.redirections.append(pipe_read_end);
last_in_left.should_wait = false;
last_in_left.is_pipe_source = true;

27
Shell/AST.h
View file

@ -123,11 +123,30 @@ private:
};
struct FdRedirection : public Redirection {
public:
static NonnullRefPtr<FdRedirection> create(int source, int dest, Rewiring::Close close)
{
return adopt(*new FdRedirection(source, dest, close));
}
static NonnullRefPtr<FdRedirection> create(int source, int dest, FdRedirection* pipe_end, Rewiring::Close close)
{
return adopt(*new FdRedirection(source, dest, pipe_end, close));
}
virtual ~FdRedirection();
virtual Result<NonnullRefPtr<Rewiring>, String> apply() const override
{
return adopt(*new Rewiring(source_fd, dest_fd, other_pipe_end, action));
}
virtual ~FdRedirection();
int source_fd { -1 };
int dest_fd { -1 };
FdRedirection* other_pipe_end { nullptr };
Rewiring::Close action { Rewiring::Close::None };
private:
FdRedirection(int source, int dest, Rewiring::Close close)
: FdRedirection(source, dest, nullptr, close)
{
@ -141,12 +160,6 @@ struct FdRedirection : public Redirection {
{
}
int source_fd { -1 };
int dest_fd { -1 };
FdRedirection* other_pipe_end { nullptr };
Rewiring::Close action { Rewiring::Close::None };
private:
virtual bool is_fd_redirection() const override { return true; }
};