Syscall rights enforcement

MaulingMonkey / cargo-html

create self-contained HTML programs

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Syscall rights enforcement #24

Closed MaulingMonkey closed 3 years ago

MaulingMonkey commented 3 years ago

[ ] path_filestat_set_size - controls an unenumerated list of syscalls. Implementing for path_open, but does this mean I can't append either? or is it merely truncation that's problematic? Upstreamed discussion @ https://github.com/WebAssembly/WASI/issues/409
[ ] poll_fd_readwrite - polling FDs not yet implemented at all

MaulingMonkey commented 3 years ago

Per upstream discussion, the filesystem rights system is likely dead-on-arrival. Said discussion also implies fd_filestat_set_size should maybe check RIGHTS_PATH_FILESTAT_SET_SIZE and not just RIGHTS_FD_FILESTAT_SET_SIZE, but I think that was a misread of two similar rights. No point clarifying if it's all DOA though.