os/os2: wasi target support

2026-08-06 23:58:50 +00:00 · 2025-01-18 22:23:44 +01:00
parent 47030501ab
commit e4892f1bb2
17 changed files with 1238 additions and 4 deletions
@@ -0,0 +1,101 @@
+#+private
+package os2
+
+import "base:runtime"
+
+import "core:path/filepath"
+import "core:sys/wasm/wasi"
+import "core:time"
+
+internal_stat :: proc(stat: wasi.filestat_t, fullpath: string) -> (fi: File_Info) {
+	fi.fullpath = fullpath
+	fi.name = filepath.base(fi.fullpath)
+
+	fi.inode = u128(stat.ino)
+	fi.size  = i64(stat.size)
+
+	switch stat.filetype {
+	case .BLOCK_DEVICE:                 fi.type = .Block_Device
+	case .CHARACTER_DEVICE:             fi.type = .Character_Device
+	case .DIRECTORY:                    fi.type = .Directory
+	case .REGULAR_FILE:                 fi.type = .Regular
+	case .SOCKET_DGRAM, .SOCKET_STREAM: fi.type = .Socket
+	case .SYMBOLIC_LINK:                fi.type = .Symlink
+	case .UNKNOWN:                      fi.type = .Undetermined
+	case:                               fi.type = .Undetermined
+	}
+
+	fi.creation_time     = time.Time{_nsec=i64(stat.ctim)}
+	fi.modification_time = time.Time{_nsec=i64(stat.mtim)}
+	fi.access_time       = time.Time{_nsec=i64(stat.atim)}
+
+	return
+}
+
+_fstat :: proc(f: ^File, allocator: runtime.Allocator) -> (fi: File_Info, err: Error) {
+	if f == nil || f.impl == nil {
+		err = .Invalid_File
+		return
+	}
+
+	impl := (^File_Impl)(f.impl)
+
+	stat, _err := wasi.fd_filestat_get(__fd(f))
+	if _err != nil {
+		err = _get_platform_error(_err)
+		return
+	}
+
+	fullpath := clone_string(impl.name, allocator) or_return
+	return internal_stat(stat, fullpath), nil
+}
+
+_stat :: proc(name: string, allocator: runtime.Allocator) -> (fi: File_Info, err: Error) {
+	if name == "" {
+		err = .Invalid_Path
+		return
+	}
+
+	dir_fd, relative, ok := match_preopen(name)
+	if !ok {
+		err = .Invalid_Path
+		return
+	}
+
+	stat, _err := wasi.path_filestat_get(dir_fd, {.SYMLINK_FOLLOW}, relative)
+	if _err != nil {
+		err = _get_platform_error(_err)
+		return
+	}
+
+	// NOTE: wasi doesn't really do full paths afact.
+	fullpath := clone_string(name, allocator) or_return
+	return internal_stat(stat, fullpath), nil
+}
+
+_lstat :: proc(name: string, allocator: runtime.Allocator) -> (fi: File_Info, err: Error) {
+	if name == "" {
+		err = .Invalid_Path
+		return
+	}
+
+	dir_fd, relative, ok := match_preopen(name)
+	if !ok {
+		err = .Invalid_Path
+		return
+	}
+
+	stat, _err := wasi.path_filestat_get(dir_fd, {}, relative)
+	if _err != nil {
+		err = _get_platform_error(_err)
+		return
+	}
+
+	// NOTE: wasi doesn't really do full paths afact.
+	fullpath := clone_string(name, allocator) or_return
+	return internal_stat(stat, fullpath), nil
+}
+
+_same_file :: proc(fi1, fi2: File_Info) -> bool {
+	return fi1.fullpath == fi2.fullpath
+}