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* [newlib-cygwin/main] Cygwin: dirent.h: make definition of struct __DIR opaque
@ 2024-02-01 11:39 Corinna Vinschen
0 siblings, 0 replies; only message in thread
From: Corinna Vinschen @ 2024-02-01 11:39 UTC (permalink / raw)
To: cygwin-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=5353cb8ef8a5cf411ee3c3518edfd6f472abbe58
commit 5353cb8ef8a5cf411ee3c3518edfd6f472abbe58
Author: Corinna Vinschen <corinna@vinschen.de>
AuthorDate: Tue Jan 23 16:09:02 2024 +0100
Commit: Corinna Vinschen <corinna@vinschen.de>
CommitDate: Wed Jan 31 20:11:57 2024 +0100
Cygwin: dirent.h: make definition of struct __DIR opaque
The content of DIR should never have been exposed into userspace.
Move struct __DIR to local dirent.h and only keep forward declaration
in exported dirent.h.
This allows to tweak the structure in future, for instance, to
add thread-safety.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diff:
---
winsup/cygwin/include/sys/dirent.h | 18 ++----------------
winsup/cygwin/local_includes/dirent.h | 30 ++++++++++++++++++++++++++++++
2 files changed, 32 insertions(+), 16 deletions(-)
diff --git a/winsup/cygwin/include/sys/dirent.h b/winsup/cygwin/include/sys/dirent.h
index 668c870295b4..dae324a7f6f6 100644
--- a/winsup/cygwin/include/sys/dirent.h
+++ b/winsup/cygwin/include/sys/dirent.h
@@ -1,4 +1,4 @@
-/* Posix dirent.h for WIN32.
+/* Posix dirent.h
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
@@ -41,21 +41,7 @@ struct dirent
#define d_fileno d_ino /* BSD compatible definition */
-#define __DIRENT_COOKIE 0xcdcd8484
-
-typedef struct __DIR
-{
- /* This is first to set alignment in non _LIBC case. */
- unsigned long __d_cookie;
- struct dirent *__d_dirent;
- char *__d_dirname; /* directory name with trailing '*' */
- __int32_t __d_position; /* used by telldir/seekdir */
- int __d_fd;
- uintptr_t __d_internal;
- void *__handle;
- void *__fh;
- unsigned __flags;
-} DIR;
+typedef struct __DIR DIR;
#if __BSD_VISIBLE
#ifdef _DIRENT_HAVE_D_TYPE
diff --git a/winsup/cygwin/local_includes/dirent.h b/winsup/cygwin/local_includes/dirent.h
new file mode 100644
index 000000000000..075b762ce922
--- /dev/null
+++ b/winsup/cygwin/local_includes/dirent.h
@@ -0,0 +1,30 @@
+/* dirent.h: define struct __DIR
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license. Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifndef _CYGWIN_DIRENT_H
+#define _CYGWIN_DIRENT_H
+
+#include_next <dirent.h>
+
+#define __DIRENT_COOKIE 0xcdcd8484
+
+struct __DIR
+{
+ /* This is first to set alignment in non _LIBC case. */
+ unsigned long __d_cookie;
+ struct dirent *__d_dirent;
+ char *__d_dirname; /* directory name with trailing '*' */
+ __int32_t __d_position; /* used by telldir/seekdir */
+ int __d_fd;
+ uintptr_t __d_internal;
+ void *__handle;
+ void *__fh;
+ unsigned __flags;
+};
+
+#endif /* _CYGWIN_DIRENT_H */
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