From 5353cb8ef8a5cf411ee3c3518edfd6f472abbe58 Mon Sep 17 00:00:00 2001 From: Corinna Vinschen Date: Tue, 23 Jan 2024 16:09:02 +0100 Subject: [PATCH] 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 --- winsup/cygwin/include/sys/dirent.h | 18 ++-------------- winsup/cygwin/local_includes/dirent.h | 30 +++++++++++++++++++++++++++ 2 files changed, 32 insertions(+), 16 deletions(-) create mode 100644 winsup/cygwin/local_includes/dirent.h diff --git a/winsup/cygwin/include/sys/dirent.h b/winsup/cygwin/include/sys/dirent.h index 668c87029..dae324a7f 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 000000000..075b762ce --- /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 + +#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 */