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-rw-r--r--src/os/dirent_linux.go51
1 files changed, 51 insertions, 0 deletions
diff --git a/src/os/dirent_linux.go b/src/os/dirent_linux.go
new file mode 100644
index 0000000..74a3431
--- /dev/null
+++ b/src/os/dirent_linux.go
@@ -0,0 +1,51 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package os
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+func direntIno(buf []byte) (uint64, bool) {
+ return readInt(buf, unsafe.Offsetof(syscall.Dirent{}.Ino), unsafe.Sizeof(syscall.Dirent{}.Ino))
+}
+
+func direntReclen(buf []byte) (uint64, bool) {
+ return readInt(buf, unsafe.Offsetof(syscall.Dirent{}.Reclen), unsafe.Sizeof(syscall.Dirent{}.Reclen))
+}
+
+func direntNamlen(buf []byte) (uint64, bool) {
+ reclen, ok := direntReclen(buf)
+ if !ok {
+ return 0, false
+ }
+ return reclen - uint64(unsafe.Offsetof(syscall.Dirent{}.Name)), true
+}
+
+func direntType(buf []byte) FileMode {
+ off := unsafe.Offsetof(syscall.Dirent{}.Type)
+ if off >= uintptr(len(buf)) {
+ return ^FileMode(0) // unknown
+ }
+ typ := buf[off]
+ switch typ {
+ case syscall.DT_BLK:
+ return ModeDevice
+ case syscall.DT_CHR:
+ return ModeDevice | ModeCharDevice
+ case syscall.DT_DIR:
+ return ModeDir
+ case syscall.DT_FIFO:
+ return ModeNamedPipe
+ case syscall.DT_LNK:
+ return ModeSymlink
+ case syscall.DT_REG:
+ return 0
+ case syscall.DT_SOCK:
+ return ModeSocket
+ }
+ return ^FileMode(0) // unknown
+}