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Add support for wasi_snapshot_preview1. (#592)

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* Add support for wasi_snapshot_preview1.

This adds support for the new ABI, while preserving compatibility
support for the old ABI.

* Fix compilation on platforms where nlink_t isn't 64-bit.

* rustfmt

* Fix Windows build errors.
This commit is contained in:
Dan Gohman
2019-11-18 22:07:16 -08:00
committed by GitHub
parent 39e57e3e9a
commit d645902620
83 changed files with 9928 additions and 803 deletions
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14
crates/wasi-common/src/hostcalls_impl/fs_helpers.rs
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@@ -118,9 +118,9 @@ pub(crate) fn path_get(
}
Err(e) => {
match e.as_wasi_errno() {
wasi::__WASI_ELOOP
| wasi::__WASI_EMLINK
| wasi::__WASI_ENOTDIR =>
wasi::__WASI_ERRNO_LOOP
| wasi::__WASI_ERRNO_MLINK
| wasi::__WASI_ERRNO_NOTDIR =>
// Check to see if it was a symlink. Linux indicates
// this with ENOTDIR because of the O_DIRECTORY flag.
{
@@ -155,7 +155,7 @@ pub(crate) fn path_get(
continue;
} else if ends_with_slash
|| (dirflags & wasi::__WASI_LOOKUP_SYMLINK_FOLLOW) != 0
|| (dirflags & wasi::__WASI_LOOKUPFLAGS_SYMLINK_FOLLOW) != 0
{
// if there's a trailing slash, or if `LOOKUP_SYMLINK_FOLLOW` is set, attempt
// symlink expansion
@@ -179,12 +179,12 @@ pub(crate) fn path_get(
continue;
}
Err(e) => {
if e.as_wasi_errno() != wasi::__WASI_EINVAL
&& e.as_wasi_errno() != wasi::__WASI_ENOENT
if e.as_wasi_errno() != wasi::__WASI_ERRNO_INVAL
&& e.as_wasi_errno() != wasi::__WASI_ERRNO_NOENT
// this handles the cases when trying to link to
// a destination that already exists, and the target
// path contains a slash
&& e.as_wasi_errno() != wasi::__WASI_ENOTDIR
&& e.as_wasi_errno() != wasi::__WASI_ERRNO_NOTDIR
{
return Err(e);
}