update go-ffmpreg to v0.3.1 (pulls in latest wazero too) (#3398)

go.mod

@@ -12,7 +12,7 @@ require (
 	codeberg.org/gruf/go-debug v1.3.0
 	codeberg.org/gruf/go-errors/v2 v2.3.2
 	codeberg.org/gruf/go-fastcopy v1.1.3
-	codeberg.org/gruf/go-ffmpreg v0.2.6
+	codeberg.org/gruf/go-ffmpreg v0.3.1
 	codeberg.org/gruf/go-iotools v0.0.0-20240710125620-934ae9c654cf
 	codeberg.org/gruf/go-kv v1.6.5
 	codeberg.org/gruf/go-list v0.0.0-20240425093752-494db03d641f
@@ -55,7 +55,7 @@ require (
 	github.com/superseriousbusiness/oauth2/v4 v4.3.2-SSB.0.20230227143000-f4900831d6c8
 	github.com/tdewolff/minify/v2 v2.20.37
 	github.com/technologize/otel-go-contrib v1.1.1
-	github.com/tetratelabs/wazero v1.8.0
+	github.com/tetratelabs/wazero v1.8.1
 	github.com/tomnomnom/linkheader v0.0.0-20180905144013-02ca5825eb80
 	github.com/ulule/limiter/v3 v3.11.2
 	github.com/uptrace/bun v1.2.1

go.sum

@@ -46,8 +46,8 @@ codeberg.org/gruf/go-fastcopy v1.1.3 h1:Jo9VTQjI6KYimlw25PPc7YLA3Xm+XMQhaHwKnM7x
 codeberg.org/gruf/go-fastcopy v1.1.3/go.mod h1:GDDYR0Cnb3U/AIfGM3983V/L+GN+vuwVMvrmVABo21s=
 codeberg.org/gruf/go-fastpath/v2 v2.0.0 h1:iAS9GZahFhyWEH0KLhFEJR+txx1ZhMXxYzu2q5Qo9c0=
 codeberg.org/gruf/go-fastpath/v2 v2.0.0/go.mod h1:3pPqu5nZjpbRrOqvLyAK7puS1OfEtQvjd6342Cwz56Q=
-codeberg.org/gruf/go-ffmpreg v0.2.6 h1:OHlTOF+62/b+VeM3Svg7praweU/NECRIsuhilZLFaO4=
+codeberg.org/gruf/go-ffmpreg v0.3.1 h1:5qE6sHQbLCbQ4RO7ZL4OKZBN4ViAYfDm9ExT8N0ZE7s=
-codeberg.org/gruf/go-ffmpreg v0.2.6/go.mod h1:sViRI0BYK2B8PJw4BrOg7DquPD71mZjDfffRAFcDtvk=
+codeberg.org/gruf/go-ffmpreg v0.3.1/go.mod h1:Ar5nbt3tB2Wr0uoaqV3wDBNwAx+H+AB/mV7Kw7NlZTI=
 codeberg.org/gruf/go-iotools v0.0.0-20240710125620-934ae9c654cf h1:84s/ii8N6lYlskZjHH+DG6jyia8w2mXMZlRwFn8Gs3A=
 codeberg.org/gruf/go-iotools v0.0.0-20240710125620-934ae9c654cf/go.mod h1:zZAICsp5rY7+hxnws2V0ePrWxE0Z2Z/KXcN3p/RQCfk=
 codeberg.org/gruf/go-kv v1.6.5 h1:ttPf0NA8F79pDqBttSudPTVCZmGncumeNIxmeM9ztz0=
@@ -548,8 +548,8 @@ github.com/tdewolff/test v1.0.11-0.20240106005702-7de5f7df4739 h1:IkjBCtQOOjIn03
 github.com/tdewolff/test v1.0.11-0.20240106005702-7de5f7df4739/go.mod h1:XPuWBzvdUzhCuxWO1ojpXsyzsA5bFoS3tO/Q3kFuTG8=
 github.com/technologize/otel-go-contrib v1.1.1 h1:wZH9aSPNWZWIkEh3vfaKfMb15AJ80jJ1aVj/4GZdqIw=
 github.com/technologize/otel-go-contrib v1.1.1/go.mod h1:dCN/wj2WyUO8aFZFdIN+6tfJHImjTML/8r2YVYAy3So=
-github.com/tetratelabs/wazero v1.8.0 h1:iEKu0d4c2Pd+QSRieYbnQC9yiFlMS9D+Jr0LsRmcF4g=
+github.com/tetratelabs/wazero v1.8.1 h1:NrcgVbWfkWvVc4UtT4LRLDf91PsOzDzefMdwhLfA550=
-github.com/tetratelabs/wazero v1.8.0/go.mod h1:yAI0XTsMBhREkM/YDAK/zNou3GoiAce1P6+rp/wQhjs=
+github.com/tetratelabs/wazero v1.8.1/go.mod h1:yAI0XTsMBhREkM/YDAK/zNou3GoiAce1P6+rp/wQhjs=
 github.com/tidwall/btree v0.0.0-20191029221954-400434d76274 h1:G6Z6HvJuPjG6XfNGi/feOATzeJrfgTNJY+rGrHbA04E=
 github.com/tidwall/btree v0.0.0-20191029221954-400434d76274/go.mod h1:huei1BkDWJ3/sLXmO+bsCNELL+Bp2Kks9OLyQFkzvA8=
 github.com/tidwall/buntdb v1.1.2 h1:noCrqQXL9EKMtcdwJcmuVKSEjqu1ua99RHHgbLTEHRo=

internal/media/ffmpeg/runner.go

@@ -20,6 +20,7 @@
 import (
 	"context"
 
+	"codeberg.org/gruf/go-ffmpreg/wasm"
 	"github.com/tetratelabs/wazero"
 )
 
@@ -65,6 +66,6 @@ func (r *runner) Run(ctx context.Context, cmod wazero.CompiledModule, args Args)
 	// Release slot back to pool on end.
 	defer func() { r.pool <- struct{}{} }()
 
-	// Pass to main module runner.
+	// Pass to main module runner function.
-	return run(ctx, cmod, args)
+	return wasm.Run(ctx, runtime, cmod, args)
 }

internal/media/ffmpeg/wasm.go

@@ -19,20 +19,18 @@
 
 import (
 	"context"
-	"io"
 	"os"
 
 	ffmpeglib "codeberg.org/gruf/go-ffmpreg/embed/ffmpeg"
 	ffprobelib "codeberg.org/gruf/go-ffmpreg/embed/ffprobe"
+	"codeberg.org/gruf/go-ffmpreg/wasm"
 	"github.com/tetratelabs/wazero"
 	"github.com/tetratelabs/wazero/imports/wasi_snapshot_preview1"
-	"github.com/tetratelabs/wazero/sys"
 )
 
 // Use all core features required by ffmpeg / ffprobe
 // (these should be the same but we OR just in case).
-const corefeatures = ffprobelib.CoreFeatures |
+const corefeatures = wasm.CoreFeatures
-	ffmpeglib.CoreFeatures
 
 var (
 	// shared WASM runtime instance.
@@ -47,65 +45,7 @@
 // configuration options to run an instance
 // of a compiled WebAssembly module that is
 // run in a typical CLI manner.
-type Args struct {
+type Args = wasm.Args
-
-	// Optional further module configuration function.
-	// (e.g. to mount filesystem dir, set env vars, etc).
-	Config func(wazero.ModuleConfig) wazero.ModuleConfig
-
-	// Standard FDs.
-	Stdin  io.Reader
-	Stdout io.Writer
-	Stderr io.Writer
-
-	// CLI args.
-	Args []string
-}
-
-// run will run the given compiled
-// WebAssembly module using given args,
-// using the global wazero runtime.
-func run(
-	ctx context.Context,
-	cmod wazero.CompiledModule,
-	args Args,
-) (
-	uint32, // exit code
-	error,
-) {
-	// Prefix module name as argv0 to args.
-	cargs := make([]string, len(args.Args)+1)
-	copy(cargs[1:], args.Args)
-	cargs[0] = cmod.Name()
-
-	// Create base module config.
-	modcfg := wazero.NewModuleConfig()
-	modcfg = modcfg.WithArgs(cargs...)
-	modcfg = modcfg.WithStdin(args.Stdin)
-	modcfg = modcfg.WithStdout(args.Stdout)
-	modcfg = modcfg.WithStderr(args.Stderr)
-
-	if args.Config != nil {
-		// Pass through config fn.
-		modcfg = args.Config(modcfg)
-	}
-
-	// Instantiate the module from precompiled wasm module data.
-	mod, err := runtime.InstantiateModule(ctx, cmod, modcfg)
-
-	if mod != nil {
-		// Ensure closed.
-		_ = mod.Close(ctx)
-	}
-
-	// Try extract exit code.
-	switch err := err.(type) {
-	case *sys.ExitError:
-		return err.ExitCode(), nil
-	default:
-		return 0, err
-	}
-}
 
 // compileFfmpeg ensures the ffmpeg WebAssembly has been
 // pre-compiled into memory. If already compiled is a no-op.

vendor/codeberg.org/gruf/go-ffmpreg/embed/ffmpeg/lib.go

@@ -3,8 +3,6 @@
 import (
 	_ "embed"
 	"os"
-
-	"github.com/tetratelabs/wazero/api"
 )
 
 func init() {
@@ -23,14 +21,5 @@ func init() {
 	}
 }
 
-// CoreFeatures is the WebAssembly Core specification
-// features this embedded binary was compiled with.
-const CoreFeatures = api.CoreFeatureSIMD |
-	api.CoreFeatureBulkMemoryOperations |
-	api.CoreFeatureNonTrappingFloatToIntConversion |
-	api.CoreFeatureMutableGlobal |
-	api.CoreFeatureReferenceTypes |
-	api.CoreFeatureSignExtensionOps
-
 //go:embed ffmpeg.wasm
 var B []byte

vendor/codeberg.org/gruf/go-ffmpreg/embed/ffprobe/lib.go

@@ -3,8 +3,6 @@
 import (
 	_ "embed"
 	"os"
-
-	"github.com/tetratelabs/wazero/api"
 )
 
 func init() {
@@ -23,14 +21,5 @@ func init() {
 	}
 }
 
-// CoreFeatures is the WebAssembly Core specification
-// features this embedded binary was compiled with.
-const CoreFeatures = api.CoreFeatureSIMD |
-	api.CoreFeatureBulkMemoryOperations |
-	api.CoreFeatureNonTrappingFloatToIntConversion |
-	api.CoreFeatureMutableGlobal |
-	api.CoreFeatureReferenceTypes |
-	api.CoreFeatureSignExtensionOps
-
 //go:embed ffprobe.wasm
 var B []byte

vendor/codeberg.org/gruf/go-ffmpreg/wasm/instance.go

@@ -0,0 +1,89 @@
+package wasm
+
+import (
+	"context"
+	"io"
+	"unsafe"
+
+	"github.com/tetratelabs/wazero"
+	"github.com/tetratelabs/wazero/api"
+	"github.com/tetratelabs/wazero/sys"
+)
+
+// CoreFeatures are the WebAssembly Core specification
+// features our embedded binaries are compiled with.
+const CoreFeatures = api.CoreFeatureSIMD |
+	api.CoreFeatureBulkMemoryOperations |
+	api.CoreFeatureNonTrappingFloatToIntConversion |
+	api.CoreFeatureMutableGlobal |
+	api.CoreFeatureReferenceTypes |
+	api.CoreFeatureSignExtensionOps
+
+// Args encompasses a common set of
+// configuration options often passed to
+// wazero.Runtime on module instantiation.
+type Args struct {
+
+	// Optional further module configuration function.
+	// (e.g. to mount filesystem dir, set env vars, etc).
+	Config func(wazero.ModuleConfig) wazero.ModuleConfig
+
+	// Standard FDs.
+	Stdin  io.Reader
+	Stdout io.Writer
+	Stderr io.Writer
+
+	// CLI args.
+	Args []string
+}
+
+// Run will run given compiled WebAssembly module
+// within the given runtime, with given arguments.
+// Returns the exit code, or error.
+func Run(
+	ctx context.Context,
+	runtime wazero.Runtime,
+	module wazero.CompiledModule,
+	args Args,
+) (rc uint32, err error) {
+
+	// Prefix arguments with module name.
+	cargs := make([]string, len(args.Args)+1)
+	cargs[0] = module.Name()
+	copy(cargs[1:], args.Args)
+
+	// Prepare new module configuration.
+	modcfg := wazero.NewModuleConfig()
+	modcfg = modcfg.WithArgs(cargs...)
+	modcfg = modcfg.WithStdin(args.Stdin)
+	modcfg = modcfg.WithStdout(args.Stdout)
+	modcfg = modcfg.WithStderr(args.Stderr)
+
+	if args.Config != nil {
+		// Pass through config fn.
+		modcfg = args.Config(modcfg)
+	}
+
+	// Instantiate the module from precompiled wasm module data.
+	mod, err := runtime.InstantiateModule(ctx, module, modcfg)
+
+	if !isNil(mod) {
+		// Ensure closed.
+		_ = mod.Close(ctx)
+	}
+
+	// Try extract exit code.
+	switch err := err.(type) {
+	case *sys.ExitError:
+		return err.ExitCode(), nil
+	default:
+		return 0, err
+	}
+}
+
+// isNil will safely check if 'v' is nil without
+// dealing with weird Go interface nil bullshit.
+func isNil(i interface{}) bool {
+	type eface struct{ Type, Data unsafe.Pointer }
+	return (*(*eface)(unsafe.Pointer(&i))).Data == nil
+}

vendor/github.com/tetratelabs/wazero/experimental/memory.go

@@ -35,6 +35,8 @@ type LinearMemory interface {
 	// Notes:
 	//   - To back a shared memory, Reallocate can't change the address of the
 	//     backing []byte (only its length/capacity may change).
+	//   - Reallocate may return nil if fails to grow the LinearMemory. This
+	//     condition may or may not be handled gracefully by the Wasm module.
 	Reallocate(size uint64) []byte
 	// Free the backing memory buffer.
 	Free()

vendor/github.com/tetratelabs/wazero/internal/descriptor/table.go

@@ -1,6 +1,9 @@
 package descriptor
 
-import "math/bits"
+import (
+	"math/bits"
+	"slices"
+)
 
 // Table is a data structure mapping 32 bit descriptor to items.
 //
@@ -37,23 +40,13 @@ func (t *Table[Key, Item]) Len() (n int) {
 	return n
 }
 
-// grow ensures that t has enough room for n items, potentially reallocating the
+// grow grows the table by n * 64 items.
-// internal buffers if their capacity was too small to hold this many items.
 func (t *Table[Key, Item]) grow(n int) {
-	// Round up to a multiple of 64 since this is the smallest increment due to
+	total := len(t.masks) + n
-	// using 64 bits masks.
+	t.masks = slices.Grow(t.masks, n)[:total]
-	n = (n*64 + 63) / 64
 
-	if n > len(t.masks) {
+	total = len(t.items) + n*64
-		masks := make([]uint64, n)
+	t.items = slices.Grow(t.items, n*64)[:total]
-		copy(masks, t.masks)
-
-		items := make([]Item, n*64)
-		copy(items, t.items)
-
-		t.masks = masks
-		t.items = items
-	}
 }
 
 // Insert inserts the given item to the table, returning the key that it is
@@ -78,13 +71,9 @@ func (t *Table[Key, Item]) Insert(item Item) (key Key, ok bool) {
 		}
 	}
 
+	// No free slot found, grow the table and retry.
 	offset = len(t.masks)
-	n := 2 * len(t.masks)
+	t.grow(1)
-	if n == 0 {
-		n = 1
-	}
-
-	t.grow(n)
 	goto insert
 }
 
@@ -109,10 +98,10 @@ func (t *Table[Key, Item]) InsertAt(item Item, key Key) bool {
 	if key < 0 {
 		return false
 	}
-	if diff := int(key) - t.Len(); diff > 0 {
+	index := uint(key) / 64
+	if diff := int(index) - len(t.masks) + 1; diff > 0 {
 		t.grow(diff)
 	}
-	index := uint(key) / 64
 	shift := uint(key) % 64
 	t.masks[index] |= 1 << shift
 	t.items[key] = item
@@ -124,7 +113,8 @@ func (t *Table[Key, Item]) Delete(key Key) {
 	if key < 0 { // invalid key
 		return
 	}
-	if index, shift := key/64, key%64; int(index) < len(t.masks) {
+	if index := uint(key) / 64; int(index) < len(t.masks) {
+		shift := uint(key) % 64
 		mask := t.masks[index]
 		if (mask & (1 << shift)) != 0 {
 			var zero Item

vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/interpreter.go

@@ -487,7 +487,7 @@ func (e *engine) setLabelAddress(op *uint64, label label, labelAddressResolution
 }
 
 // ResolveImportedFunction implements wasm.ModuleEngine.
-func (e *moduleEngine) ResolveImportedFunction(index, indexInImportedModule wasm.Index, importedModuleEngine wasm.ModuleEngine) {
+func (e *moduleEngine) ResolveImportedFunction(index, descFunc, indexInImportedModule wasm.Index, importedModuleEngine wasm.ModuleEngine) {
 	imported := importedModuleEngine.(*moduleEngine)
 	e.functions[index] = imported.functions[indexInImportedModule]
 }

vendor/github.com/tetratelabs/wazero/internal/engine/wazevo/module_engine.go

@@ -237,7 +237,7 @@ func (m *moduleEngine) putLocalMemory() {
 }
 
 // ResolveImportedFunction implements wasm.ModuleEngine.
-func (m *moduleEngine) ResolveImportedFunction(index, indexInImportedModule wasm.Index, importedModuleEngine wasm.ModuleEngine) {
+func (m *moduleEngine) ResolveImportedFunction(index, descFunc, indexInImportedModule wasm.Index, importedModuleEngine wasm.ModuleEngine) {
 	executableOffset, moduleCtxOffset, typeIDOffset := m.parent.offsets.ImportedFunctionOffset(index)
 	importedME := importedModuleEngine.(*moduleEngine)
 
@@ -245,12 +245,12 @@ func (m *moduleEngine) ResolveImportedFunction(index, indexInImportedModule wasm
 		indexInImportedModule -= wasm.Index(len(importedME.importedFunctions))
 	} else {
 		imported := &importedME.importedFunctions[indexInImportedModule]
-		m.ResolveImportedFunction(index, imported.indexInModule, imported.me)
+		m.ResolveImportedFunction(index, descFunc, imported.indexInModule, imported.me)
 		return // Recursively resolve the imported function.
 	}
 
 	offset := importedME.parent.functionOffsets[indexInImportedModule]
-	typeID := getTypeIDOf(indexInImportedModule, importedME.module)
+	typeID := m.module.TypeIDs[descFunc]
 	executable := &importedME.parent.executable[offset]
 	// Write functionInstance.
 	binary.LittleEndian.PutUint64(m.opaque[executableOffset:], uint64(uintptr(unsafe.Pointer(executable))))
@@ -261,28 +261,6 @@ func (m *moduleEngine) ResolveImportedFunction(index, indexInImportedModule wasm
 	m.importedFunctions[index] = importedFunction{me: importedME, indexInModule: indexInImportedModule}
 }
 
-func getTypeIDOf(funcIndex wasm.Index, m *wasm.ModuleInstance) wasm.FunctionTypeID {
-	source := m.Source
-
-	var typeIndex wasm.Index
-	if funcIndex >= source.ImportFunctionCount {
-		funcIndex -= source.ImportFunctionCount
-		typeIndex = source.FunctionSection[funcIndex]
-	} else {
-		var cnt wasm.Index
-		for i := range source.ImportSection {
-			if source.ImportSection[i].Type == wasm.ExternTypeFunc {
-				if cnt == funcIndex {
-					typeIndex = source.ImportSection[i].DescFunc
-					break
-				}
-				cnt++
-			}
-		}
-	}
-	return m.TypeIDs[typeIndex]
-}
-
 // ResolveImportedMemory implements wasm.ModuleEngine.
 func (m *moduleEngine) ResolveImportedMemory(importedModuleEngine wasm.ModuleEngine) {
 	importedME := importedModuleEngine.(*moduleEngine)

vendor/github.com/tetratelabs/wazero/internal/sysfs/dirfs_supported.go

@@ -5,6 +5,7 @@
 import (
 	"io/fs"
 	"os"
+	"path"
 
 	experimentalsys "github.com/tetratelabs/wazero/experimental/sys"
 )
@@ -34,6 +35,11 @@ func (d *dirFS) Chmod(path string, perm fs.FileMode) experimentalsys.Errno {
 
 // Symlink implements the same method as documented on sys.FS
 func (d *dirFS) Symlink(oldName, link string) experimentalsys.Errno {
+	// Creating a symlink with an absolute path string fails with a "not permitted" error.
+	// https://github.com/WebAssembly/wasi-filesystem/blob/v0.2.0/path-resolution.md#symlinks
+	if path.IsAbs(oldName) {
+		return experimentalsys.EPERM
+	}
 	// Note: do not resolve `oldName` relative to this dirFS. The link result is always resolved
 	// when dereference the `link` on its usage (e.g. readlink, read, etc).
 	// https://github.com/bytecodealliance/cap-std/blob/v1.0.4/cap-std/src/fs/dir.rs#L404-L409

vendor/github.com/tetratelabs/wazero/internal/sysfs/file.go

@@ -269,7 +269,7 @@ func (f *fsFile) Readdir(n int) (dirents []experimentalsys.Dirent, errno experim
 
 	if f.reopenDir { // re-open the directory if needed.
 		f.reopenDir = false
-		if errno = adjustReaddirErr(f, f.closed, f.reopen()); errno != 0 {
+		if errno = adjustReaddirErr(f, f.closed, f.rewindDir()); errno != 0 {
 			return
 		}
 	}
@@ -418,20 +418,26 @@ func seek(s io.Seeker, offset int64, whence int) (int64, experimentalsys.Errno)
 	return newOffset, experimentalsys.UnwrapOSError(err)
 }
 
-// reopenFile allows re-opening a file for reasons such as applying flags or
+func (f *fsFile) rewindDir() experimentalsys.Errno {
-// directory iteration.
+	// Reopen the directory to rewind it.
-type reopenFile func() experimentalsys.Errno
+	file, err := f.fs.Open(f.name)
-
+	if err != nil {
-// compile-time check to ensure fsFile.reopen implements reopenFile.
-var _ reopenFile = (*fsFile)(nil).reopen
-
-// reopen implements the same method as documented on reopenFile.
-func (f *fsFile) reopen() experimentalsys.Errno {
-	_ = f.close()
-	var err error
-	f.file, err = f.fs.Open(f.name)
 		return experimentalsys.UnwrapOSError(err)
 	}
+	fi, err := file.Stat()
+	if err != nil {
+		return experimentalsys.UnwrapOSError(err)
+	}
+	// Can't check if it's still the same file,
+	// but is it still a directory, at least?
+	if !fi.IsDir() {
+		return experimentalsys.ENOTDIR
+	}
+	// Only update f on success.
+	_ = f.file.Close()
+	f.file = file
+	return 0
+}
 
 // readdirFile allows masking the `Readdir` function on os.File.
 type readdirFile interface {

vendor/github.com/tetratelabs/wazero/internal/sysfs/osfile.go

@@ -83,21 +83,12 @@ func (f *osFile) SetAppend(enable bool) (errno experimentalsys.Errno) {
 		f.flag &= ^experimentalsys.O_APPEND
 	}
 
-	// Clear any create or trunc flag, as we are re-opening, not re-creating.
+	// appendMode cannot be changed later, so we have to re-open the file
-	f.flag &= ^(experimentalsys.O_CREAT | experimentalsys.O_TRUNC)
+	// https://github.com/golang/go/blob/go1.23/src/os/file_unix.go#L60
-
-	// appendMode (bool) cannot be changed later, so we have to re-open the
-	// file. https://github.com/golang/go/blob/go1.20/src/os/file_unix.go#L60
 	return fileError(f, f.closed, f.reopen())
 }
 
-// compile-time check to ensure osFile.reopen implements reopenFile.
-var _ reopenFile = (*osFile)(nil).reopen
-
 func (f *osFile) reopen() (errno experimentalsys.Errno) {
-	// Clear any create flag, as we are re-opening, not re-creating.
-	f.flag &= ^experimentalsys.O_CREAT
-
 	var (
 		isDir  bool
 		offset int64
@@ -116,22 +107,47 @@ func (f *osFile) reopen() (errno experimentalsys.Errno) {
 		}
 	}
 
-	_ = f.close()
+	// Clear any create or trunc flag, as we are re-opening, not re-creating.
-	f.file, errno = OpenFile(f.path, f.flag, f.perm)
+	flag := f.flag &^ (experimentalsys.O_CREAT | experimentalsys.O_TRUNC)
+	file, errno := OpenFile(f.path, flag, f.perm)
+	if errno != 0 {
+		return errno
+	}
+	errno = f.checkSameFile(file)
 	if errno != 0 {
 		return errno
 	}
 
 	if !isDir {
-		_, err = f.file.Seek(offset, io.SeekStart)
+		_, err = file.Seek(offset, io.SeekStart)
 		if err != nil {
+			_ = file.Close()
 			return experimentalsys.UnwrapOSError(err)
 		}
 	}
 
+	// Only update f on success.
+	_ = f.file.Close()
+	f.file = file
+	f.fd = file.Fd()
 	return 0
 }
 
+func (f *osFile) checkSameFile(osf *os.File) experimentalsys.Errno {
+	fi1, err := f.file.Stat()
+	if err != nil {
+		return experimentalsys.UnwrapOSError(err)
+	}
+	fi2, err := osf.Stat()
+	if err != nil {
+		return experimentalsys.UnwrapOSError(err)
+	}
+	if os.SameFile(fi1, fi2) {
+		return 0
+	}
+	return experimentalsys.ENOENT
+}
+
 // IsNonblock implements the same method as documented on fsapi.File
 func (f *osFile) IsNonblock() bool {
 	return isNonblock(f)

vendor/github.com/tetratelabs/wazero/internal/wasm/engine.go

@@ -44,9 +44,10 @@ type ModuleEngine interface {
 
 	// ResolveImportedFunction is used to add imported functions needed to make this ModuleEngine fully functional.
 	// 	- `index` is the function Index of this imported function.
+	// 	- `descFunc` is the type Index in Module.TypeSection of this imported function. It corresponds to Import.DescFunc.
 	// 	- `indexInImportedModule` is the function Index of the imported function in the imported module.
 	//	- `importedModuleEngine` is the ModuleEngine for the imported ModuleInstance.
-	ResolveImportedFunction(index, indexInImportedModule Index, importedModuleEngine ModuleEngine)
+	ResolveImportedFunction(index, descFunc, indexInImportedModule Index, importedModuleEngine ModuleEngine)
 
 	// ResolveImportedMemory is called when this module imports a memory from another module.
 	ResolveImportedMemory(importedModuleEngine ModuleEngine)

vendor/github.com/tetratelabs/wazero/internal/wasm/memory.go

@@ -77,6 +77,7 @@ func NewMemoryInstance(memSec *Memory, allocator experimental.MemoryAllocator, m
 	if allocator != nil {
 		expBuffer = allocator.Allocate(capBytes, maxBytes)
 		buffer = expBuffer.Reallocate(minBytes)
+		_ = buffer[:minBytes] // Bounds check that the minimum was allocated.
 	} else if memSec.IsShared {
 		// Shared memory needs a fixed buffer, so allocate with the maximum size.
 		//
@@ -238,12 +239,15 @@ func (m *MemoryInstance) Grow(delta uint32) (result uint32, ok bool) {
 		return currentPages, true
 	}
 
-	// If exceeds the max of memory size, we push -1 according to the spec.
 	newPages := currentPages + delta
 	if newPages > m.Max || int32(delta) < 0 {
 		return 0, false
 	} else if m.expBuffer != nil {
 		buffer := m.expBuffer.Reallocate(MemoryPagesToBytesNum(newPages))
+		if buffer == nil {
+			// Allocator failed to grow.
+			return 0, false
+		}
 		if m.Shared {
 			if unsafe.SliceData(buffer) != unsafe.SliceData(m.Buffer) {
 				panic("shared memory cannot move, this is a bug in the memory allocator")

vendor/github.com/tetratelabs/wazero/internal/wasm/store.go

@@ -446,7 +446,7 @@ func (m *ModuleInstance) resolveImports(ctx context.Context, module *Module) (er
 					return
 				}
 
-				m.Engine.ResolveImportedFunction(i.IndexPerType, imported.Index, importedModule.Engine)
+				m.Engine.ResolveImportedFunction(i.IndexPerType, i.DescFunc, imported.Index, importedModule.Engine)
 			case ExternTypeTable:
 				expected := i.DescTable
 				importedTable := importedModule.Tables[imported.Index]

vendor/github.com/tetratelabs/wazero/sys/stat.go

@@ -29,9 +29,7 @@
 // # Notes
 //
 //   - This is used for WebAssembly ABI emulating the POSIX `stat` system call.
-//     Fields included are required for WebAssembly ABI including wasip1
+//     See https://pubs.opengroup.org/onlinepubs/9699919799/functions/stat.html
-//     (a.k.a. wasix) and wasi-filesystem (a.k.a. wasip2). See
-//     https://pubs.opengroup.org/onlinepubs/9699919799/functions/stat.html
 //   - Fields here are required for WebAssembly ABI including wasip1
 //     (a.k.a. wasix) and wasi-filesystem (a.k.a. wasip2).
 //   - This isn't the same as syscall.Stat_t because wazero supports Windows,

vendor/modules.txt

@@ -24,10 +24,11 @@ codeberg.org/gruf/go-fastcopy
 # codeberg.org/gruf/go-fastpath/v2 v2.0.0
 ## explicit; go 1.14
 codeberg.org/gruf/go-fastpath/v2
-# codeberg.org/gruf/go-ffmpreg v0.2.6
+# codeberg.org/gruf/go-ffmpreg v0.3.1
 ## explicit; go 1.22.0
 codeberg.org/gruf/go-ffmpreg/embed/ffmpeg
 codeberg.org/gruf/go-ffmpreg/embed/ffprobe
+codeberg.org/gruf/go-ffmpreg/wasm
 # codeberg.org/gruf/go-iotools v0.0.0-20240710125620-934ae9c654cf
 ## explicit; go 1.21
 codeberg.org/gruf/go-iotools
@@ -844,7 +845,7 @@ github.com/tdewolff/parse/v2/strconv
 # github.com/technologize/otel-go-contrib v1.1.1
 ## explicit; go 1.17
 github.com/technologize/otel-go-contrib/otelginmetrics
-# github.com/tetratelabs/wazero v1.8.0
+# github.com/tetratelabs/wazero v1.8.1
 ## explicit; go 1.21
 github.com/tetratelabs/wazero
 github.com/tetratelabs/wazero/api