4lDO2
240d91f951
This fixes file descriptor leaks. Suppose relibc is just about to set the address space. For this, it needs to write the address space fd to the selection fd. To avoid having to close them in the kernel, it rather memorizes what the file descriptors refer to internally, and then do the actual operation when they are gone, i.e. when closing.
kernel
Redox OS Microkernel
Debugging the redox kernel
Running qemu with the -s flag will set up qemu to listen on port 1234 for
a gdb client to connect to it. To debug the redox kernel run.
make qemu gdb=yes
This will start a VM with and listen on port 1234 for a gdb or lldb client.
gdb
If you are going to use gdb, run the following to load debug symbols and connect to your running kernel.
(gdb) symbol-file build/kernel.sym
(gdb) target remote localhost:1234
lldb
If you are going to use lldb, run the following to start debugging.
(lldb) target create -s build/kernel.sym build/kernel
(lldb) gdb-remote localhost:1234
Debugging
After connecting to your kernel you can set some interesting breakpoints and continue
the process. See your debuggers man page for more information on useful commands to run.