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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>
This commit is contained in:
Corinna Vinschen 2024-01-23 16:09:02 +01:00
parent d72be712aa
commit 5353cb8ef8
2 changed files with 32 additions and 16 deletions
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18
winsup/cygwin/include/sys/dirent.h
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@ -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

30
winsup/cygwin/local_includes/dirent.h Normal file
View File

@ -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 */