proc - SerenityOS ProcFS
The kernel can expose process related information in /proc. This functionality is used by various userland programs. All of the output layout (besides symbolic links) in the ProcFS nodes is JSON.
cwd - a symbolic link to current work directory of a process.exe - a symbolic link to the executable binary of the process.fds - this node exports information on all currently open file descriptors.fd - this directory lists all currently open file descriptors.perf_events - this node exports information being gathered during a profile on a process.pledge - this node exports information on all the pledge requests and promises of a process.stacks - this directory lists all stack traces of process threads.unveil - this node exports information on all the unveil requests of a process.vm - this node exports information on virtual memory mappings of a process.children - this directory lists all the child processes of a process.When opening a data node, the kernel generates the required data so it's prepared for read operation when requested to. However, in order to ensure that multiple reads will not create a corrupted data from that data node, a read operation alone will not inquire the kernel to refresh the data. To keep data output being refreshed, the userland has to re-open the data node with a new file descriptor, or to perform the lseek syscall on the open file descriptor to reset the offset to 0.