30a4f73cce
* Mark public API functions as unsafe. This marks the public hostcalls functions as unsafe. This is generalizing from Rust's `from_raw_fd` function, which is unsafe. The observation is that nothing prevents code using this function from passing a bogus or stale dangling file descriptor and corrupting an arbitrary open stream. Technically, some of these functions don't use file descriptors, such as random, clocks, and a few others. However I expect that in the future, random and clocks will switch to using file descriptors anyway, and it keeps the macro definitions simpler if we only have to handle one form. * Mark WasiCtx functions that operate on file descriptors unsafe too. * `fd_filestat_set_times_impl` doesn't need to be unsafe. * Remove unnecessary unsafes
257 lines
7.8 KiB
Rust
257 lines
7.8 KiB
Rust
#![allow(non_camel_case_types)]
|
|
use crate::ctx::WasiCtx;
|
|
use crate::wasm32;
|
|
|
|
hostcalls! {
|
|
pub unsafe fn fd_close(wasi_ctx: &mut WasiCtx, fd: wasm32::__wasi_fd_t,) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_datasync(wasi_ctx: &WasiCtx, fd: wasm32::__wasi_fd_t,) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_pread(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
iovs_ptr: wasm32::uintptr_t,
|
|
iovs_len: wasm32::size_t,
|
|
offset: wasm32::__wasi_filesize_t,
|
|
nread: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_pwrite(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
iovs_ptr: wasm32::uintptr_t,
|
|
iovs_len: wasm32::size_t,
|
|
offset: wasm32::__wasi_filesize_t,
|
|
nwritten: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_read(
|
|
wasi_ctx: &mut WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
iovs_ptr: wasm32::uintptr_t,
|
|
iovs_len: wasm32::size_t,
|
|
nread: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_renumber(
|
|
wasi_ctx: &mut WasiCtx,
|
|
from: wasm32::__wasi_fd_t,
|
|
to: wasm32::__wasi_fd_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_seek(
|
|
wasi_ctx: &mut WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
offset: wasm32::__wasi_filedelta_t,
|
|
whence: wasm32::__wasi_whence_t,
|
|
newoffset: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_tell(
|
|
wasi_ctx: &mut WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
newoffset: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_fdstat_get(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
fdstat_ptr: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_fdstat_set_flags(
|
|
wasi_ctx: &WasiCtx,
|
|
fd: wasm32::__wasi_fd_t,
|
|
fdflags: wasm32::__wasi_fdflags_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_fdstat_set_rights(
|
|
wasi_ctx: &mut WasiCtx,
|
|
fd: wasm32::__wasi_fd_t,
|
|
fs_rights_base: wasm32::__wasi_rights_t,
|
|
fs_rights_inheriting: wasm32::__wasi_rights_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_sync(wasi_ctx: &WasiCtx, fd: wasm32::__wasi_fd_t,) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_write(
|
|
wasi_ctx: &mut WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
iovs_ptr: wasm32::uintptr_t,
|
|
iovs_len: wasm32::size_t,
|
|
nwritten: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_advise(
|
|
wasi_ctx: &WasiCtx,
|
|
fd: wasm32::__wasi_fd_t,
|
|
offset: wasm32::__wasi_filesize_t,
|
|
len: wasm32::__wasi_filesize_t,
|
|
advice: wasm32::__wasi_advice_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_allocate(
|
|
wasi_ctx: &WasiCtx,
|
|
fd: wasm32::__wasi_fd_t,
|
|
offset: wasm32::__wasi_filesize_t,
|
|
len: wasm32::__wasi_filesize_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn path_create_directory(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
dirfd: wasm32::__wasi_fd_t,
|
|
path_ptr: wasm32::uintptr_t,
|
|
path_len: wasm32::size_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn path_link(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
old_dirfd: wasm32::__wasi_fd_t,
|
|
old_flags: wasm32::__wasi_lookupflags_t,
|
|
old_path_ptr: wasm32::uintptr_t,
|
|
old_path_len: wasm32::size_t,
|
|
new_dirfd: wasm32::__wasi_fd_t,
|
|
new_path_ptr: wasm32::uintptr_t,
|
|
new_path_len: wasm32::size_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn path_open(
|
|
wasi_ctx: &mut WasiCtx,
|
|
memory: &mut [u8],
|
|
dirfd: wasm32::__wasi_fd_t,
|
|
dirflags: wasm32::__wasi_lookupflags_t,
|
|
path_ptr: wasm32::uintptr_t,
|
|
path_len: wasm32::size_t,
|
|
oflags: wasm32::__wasi_oflags_t,
|
|
fs_rights_base: wasm32::__wasi_rights_t,
|
|
fs_rights_inheriting: wasm32::__wasi_rights_t,
|
|
fs_flags: wasm32::__wasi_fdflags_t,
|
|
fd_out_ptr: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_readdir(
|
|
wasi_ctx: &mut WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
buf: wasm32::uintptr_t,
|
|
buf_len: wasm32::size_t,
|
|
cookie: wasm32::__wasi_dircookie_t,
|
|
buf_used: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn path_readlink(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
dirfd: wasm32::__wasi_fd_t,
|
|
path_ptr: wasm32::uintptr_t,
|
|
path_len: wasm32::size_t,
|
|
buf_ptr: wasm32::uintptr_t,
|
|
buf_len: wasm32::size_t,
|
|
buf_used: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn path_rename(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
old_dirfd: wasm32::__wasi_fd_t,
|
|
old_path_ptr: wasm32::uintptr_t,
|
|
old_path_len: wasm32::size_t,
|
|
new_dirfd: wasm32::__wasi_fd_t,
|
|
new_path_ptr: wasm32::uintptr_t,
|
|
new_path_len: wasm32::size_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_filestat_get(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
filestat_ptr: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_filestat_set_times(
|
|
wasi_ctx: &WasiCtx,
|
|
fd: wasm32::__wasi_fd_t,
|
|
st_atim: wasm32::__wasi_timestamp_t,
|
|
st_mtim: wasm32::__wasi_timestamp_t,
|
|
fst_flags: wasm32::__wasi_fstflags_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_filestat_set_size(
|
|
wasi_ctx: &WasiCtx,
|
|
fd: wasm32::__wasi_fd_t,
|
|
st_size: wasm32::__wasi_filesize_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn path_filestat_get(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
dirfd: wasm32::__wasi_fd_t,
|
|
dirflags: wasm32::__wasi_lookupflags_t,
|
|
path_ptr: wasm32::uintptr_t,
|
|
path_len: wasm32::size_t,
|
|
filestat_ptr: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn path_filestat_set_times(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
dirfd: wasm32::__wasi_fd_t,
|
|
dirflags: wasm32::__wasi_lookupflags_t,
|
|
path_ptr: wasm32::uintptr_t,
|
|
path_len: wasm32::size_t,
|
|
st_atim: wasm32::__wasi_timestamp_t,
|
|
st_mtim: wasm32::__wasi_timestamp_t,
|
|
fst_flags: wasm32::__wasi_fstflags_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn path_symlink(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
old_path_ptr: wasm32::uintptr_t,
|
|
old_path_len: wasm32::size_t,
|
|
dirfd: wasm32::__wasi_fd_t,
|
|
new_path_ptr: wasm32::uintptr_t,
|
|
new_path_len: wasm32::size_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn path_unlink_file(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
dirfd: wasm32::__wasi_fd_t,
|
|
path_ptr: wasm32::uintptr_t,
|
|
path_len: wasm32::size_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn path_remove_directory(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
dirfd: wasm32::__wasi_fd_t,
|
|
path_ptr: wasm32::uintptr_t,
|
|
path_len: wasm32::size_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_prestat_get(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
prestat_ptr: wasm32::uintptr_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
|
|
pub unsafe fn fd_prestat_dir_name(
|
|
wasi_ctx: &WasiCtx,
|
|
memory: &mut [u8],
|
|
fd: wasm32::__wasi_fd_t,
|
|
path_ptr: wasm32::uintptr_t,
|
|
path_len: wasm32::size_t,
|
|
) -> wasm32::__wasi_errno_t;
|
|
}
|