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Kernel: Make it possible to look up FIFO's by ID.

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This will be useful when implementing the /proc/PID/fd/N links where N is
a file descriptor referring to a FIFO.
This commit is contained in:
Andreas Kling 2019-04-25 13:52:07 +02:00
parent eadcf720c0
commit d5578826af
4 changed files with 43 additions and 8 deletions
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4
Kernel/Process.cpp
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@ -276,7 +276,7 @@ int Process::do_exec(String path, Vector<String> arguments, Vector<String> envir
{
ASSERT(is_ring3());
dbgprintf("%s(%d) do_exec: thread_count() = %d\n", m_name.characters(), m_pid, thread_count());
dbgprintf("%s(%d) do_exec(%s): thread_count() = %d\n", m_name.characters(), m_pid, path.characters(), thread_count());
// FIXME(Thread): Kill any threads the moment we commit to the exec().
if (thread_count() != 1) {
dbgprintf("Gonna die because I have many threads! These are the threads:\n");
@ -1097,7 +1097,7 @@ int Process::sys$pipe(int pipefd[2])
return -EFAULT;
if (number_of_open_file_descriptors() + 2 > max_open_file_descriptors())
return -EMFILE;
auto fifo = FIFO::create();
auto fifo = FIFO::create(m_uid);
int reader_fd = alloc_fd();
m_fds[reader_fd].set(FileDescriptor::create_pipe_reader(*fifo));