Fill in a few more of the missing pieces...

3 files changed, 75 insertions, 108 deletions

diff --git a/libc/stdio/_stdio.h b/libc/stdio/_stdio.h
index 6647a6f0e..4c1e4415f 100644
--- a/libc/stdio/_stdio.h
+++ b/libc/stdio/_stdio.h
@@ -20,75 +20,53 @@
 #include <wchar.h>
 #endif
 
-#ifdef __UCLIBC_HAS_THREADS__
-#include <pthread.h>
+#include <bits/uClibc_mutex.h>
 
-#define __STDIO_THREADLOCK_OPENLIST_ADD										\
-	do {																	\
-		struct _pthread_cleanup_buffer __infunc_pthread_cleanup_buffer;		\
-		_pthread_cleanup_push_defer(&__infunc_pthread_cleanup_buffer,		\
-									__pthread_mutex_unlock,					\
-									&_stdio_openlist_add_lock);				\
-		__pthread_mutex_lock(&_stdio_openlist_add_lock);					\
-
-#define __STDIO_THREADUNLOCK_OPENLIST_ADD									\
-		_pthread_cleanup_pop_restore(&__infunc_pthread_cleanup_buffer,1);	\
-	} while (0)
+#define __STDIO_THREADLOCK_OPENLIST_ADD			\
+        __UCLIBC_MUTEX_LOCK(_stdio_openlist_add_lock)
 
+#define __STDIO_THREADUNLOCK_OPENLIST_ADD		\
+        __UCLIBC_MUTEX_UNLOCK(_stdio_openlist_add_lock)
 
 #ifdef __STDIO_BUFFERS
 
-#define __STDIO_THREADLOCK_OPENLIST_DEL										\
-	do {																	\
-		struct _pthread_cleanup_buffer __infunc_pthread_cleanup_buffer;		\
-		_pthread_cleanup_push_defer(&__infunc_pthread_cleanup_buffer,		\
-									__pthread_mutex_unlock,					\
-									&_stdio_openlist_del_lock);				\
-		__pthread_mutex_lock(&_stdio_openlist_del_lock);					\
+#define __STDIO_THREADLOCK_OPENLIST_DEL			\
+        __UCLIBC_MUTEX_LOCK(_stdio_openlist_del_lock)
 
-#define __STDIO_THREADUNLOCK_OPENLIST_DEL									\
-		_pthread_cleanup_pop_restore(&__infunc_pthread_cleanup_buffer,1);	\
-	} while (0)
+#define __STDIO_THREADUNLOCK_OPENLIST_DEL		\
+        __UCLIBC_MUTEX_UNLOCK(_stdio_openlist_del_lock)
 
-#define __STDIO_OPENLIST_INC_USE \
-do { \
-	__STDIO_THREADLOCK_OPENLIST_DEL; \
-	++_stdio_openlist_use_count; \
-	__STDIO_THREADUNLOCK_OPENLIST_DEL; \
+#define __STDIO_OPENLIST_INC_USE			\
+do {							\
+	__STDIO_THREADLOCK_OPENLIST_DEL;		\
+	++_stdio_openlist_use_count;			\
+	__STDIO_THREADUNLOCK_OPENLIST_DEL;		\
 } while (0)
 
 extern void _stdio_openlist_dec_use(void);
 
-#define __STDIO_OPENLIST_DEC_USE \
+#define __STDIO_OPENLIST_DEC_USE			\
 	_stdio_openlist_dec_use()
 
-#define __STDIO_OPENLIST_INC_DEL_CNT \
-do { \
-	__STDIO_THREADLOCK_OPENLIST_DEL; \
-	++_stdio_openlist_del_count; \
-	__STDIO_THREADUNLOCK_OPENLIST_DEL; \
+#define __STDIO_OPENLIST_INC_DEL_CNT			\
+do {							\
+	__STDIO_THREADLOCK_OPENLIST_DEL;		\
+	++_stdio_openlist_del_count;			\
+	__STDIO_THREADUNLOCK_OPENLIST_DEL;		\
 } while (0)
 
-#define __STDIO_OPENLIST_DEC_DEL_CNT \
+#define __STDIO_OPENLIST_DEC_DEL_CNT			\
 do { \
-	__STDIO_THREADLOCK_OPENLIST_DEL; \
-	--_stdio_openlist_del_count; \
-	__STDIO_THREADUNLOCK_OPENLIST_DEL; \
+	__STDIO_THREADLOCK_OPENLIST_DEL;		\
+	--_stdio_openlist_del_count;			\
+	__STDIO_THREADUNLOCK_OPENLIST_DEL;		\
 } while (0)
 
-#endif
-
-#endif  /* __UCLIBC_HAS_THREADS__ */
-
-#ifndef __STDIO_THREADLOCK_OPENLIST_ADD
-#define	__STDIO_THREADLOCK_OPENLIST_ADD     ((void)0)
-#define	__STDIO_THREADUNLOCK_OPENLIST_ADD   ((void)0)
-#endif
+#endif /* __STDIO_BUFFERS */
 
 #ifndef __STDIO_THREADLOCK_OPENLIST_DEL
 #define	__STDIO_THREADLOCK_OPENLIST_DEL     ((void)0)
 #define	__STDIO_THREADUNLOCK_OPENLIST_DEL   ((void)0)
-/* #define __STDIO_OPENLIST_USE_CNT() (0) */
 #define __STDIO_OPENLIST_INC_USE            ((void)0)
 #define __STDIO_OPENLIST_DEC_USE            ((void)0)
 #define __STDIO_OPENLIST_INC_DEL_CNT        ((void)0)
@@ -176,30 +154,30 @@ extern int __stdio_seek(FILE *stream, register __offmax_t *pos, int whence) attr
 /**********************************************************************/
 #ifdef __UCLIBC_HAS_WCHAR__
 
-#define __STDIO_STREAM_IS_NARROW_WRITING(S)   \
-	(((S)->__modeflags & (__FLAG_WRITING|__FLAG_NARROW)) \
+#define __STDIO_STREAM_IS_NARROW_WRITING(S)			\
+	(((S)->__modeflags & (__FLAG_WRITING|__FLAG_NARROW))	\
 	 == (__FLAG_WRITING|__FLAG_NARROW))
 
-#define __STDIO_STREAM_IS_WIDE_WRITING(S)   \
-	(((S)->__modeflags & (__FLAG_WRITING|__FLAG_WIDE)) \
+#define __STDIO_STREAM_IS_WIDE_WRITING(S)			\
+	(((S)->__modeflags & (__FLAG_WRITING|__FLAG_WIDE))	\
 	 == (__FLAG_WRITING|__FLAG_WIDE))
 
 #if (__FLAG_NARROW <= __MASK_READING)
 #error assumption violated regarding __FLAG_NARROW
 #endif
 
-#define __STDIO_STREAM_IS_NARROW_READING(S)   \
+#define __STDIO_STREAM_IS_NARROW_READING(S)			\
 	(((S)->__modeflags & (__MASK_READING|__FLAG_NARROW)) > __FLAG_NARROW)
 
-#define __STDIO_STREAM_IS_WIDE_READING(S)   \
+#define __STDIO_STREAM_IS_WIDE_READING(S)			\
 	(((S)->__modeflags & (__MASK_READING|__FLAG_WIDE)) > __FLAG_WIDE)
 
 #define __STDIO_STREAM_IS_NARROW(S)		((S)->__modeflags & __FLAG_NARROW)
 #define __STDIO_STREAM_IS_WIDE(S)		((S)->__modeflags & __FLAG_WIDE)
 
-#define __STDIO_STREAM_SET_NARROW(S) \
+#define __STDIO_STREAM_SET_NARROW(S)				\
 	((void)((S)->__modeflags |= __FLAG_NARROW))
-#define __STDIO_STREAM_SET_WIDE(S) \
+#define __STDIO_STREAM_SET_WIDE(S)				\
 	((void)((S)->__modeflags |= __FLAG_WIDE))
 
 #else
@@ -208,11 +186,11 @@ extern int __stdio_seek(FILE *stream, register __offmax_t *pos, int whence) attr
 
 #define __STDIO_STREAM_IS_NARROW_READING(S)  __STDIO_STREAM_IS_READING(S)
 
-#define __STDIO_STREAM_IS_NARROW(S)		(1)
-#define __STDIO_STREAM_IS_WIDE(S)		(0)
+#define __STDIO_STREAM_IS_NARROW(S)			(1)
+#define __STDIO_STREAM_IS_WIDE(S)			(0)
 
-#define __STDIO_STREAM_SET_NARROW(S)	((void)0)
-#define __STDIO_STREAM_SET_WIDE(S)		((void)0)
+#define __STDIO_STREAM_SET_NARROW(S)			((void)0)
+#define __STDIO_STREAM_SET_WIDE(S)			((void)0)
 
 #endif
 /**********************************************************************/
@@ -242,7 +220,7 @@ extern int __stdio_seek(FILE *stream, register __offmax_t *pos, int whence) attr
 #else
 # define __STDIO_STREAM_DISABLE_GETC(S)			((void)0)
 # define __STDIO_STREAM_ENABLE_GETC(S)			((void)0)
-# define __STDIO_STREAM_CAN_USE_BUFFER_GET(S)	(0)
+# define __STDIO_STREAM_CAN_USE_BUFFER_GET(S)		(0)
 #endif
 
 #ifdef __UCLIBC_HAS_STDIO_PUTC_MACRO__
@@ -255,26 +233,28 @@ extern int __stdio_seek(FILE *stream, register __offmax_t *pos, int whence) attr
 #else
 # define __STDIO_STREAM_DISABLE_PUTC(S)			((void)0)
 # define __STDIO_STREAM_ENABLE_PUTC(S)			((void)0)
-# define __STDIO_STREAM_CAN_USE_BUFFER_ADD(S)	(0)
+# define __STDIO_STREAM_CAN_USE_BUFFER_ADD(S)		(0)
 #endif
 
 #ifdef __UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__
 #define __STDIO_STREAM_IS_CUSTOM(S)		((S)->__cookie != &((S)->__filedes))
 #else
-#define __STDIO_STREAM_IS_CUSTOM(S)		(0)
+#define __STDIO_STREAM_IS_CUSTOM(S)			(0)
 #endif
 
 /**********************************************************************/
 
 #ifdef __STDIO_BUFFERS
-#define __STDIO_STREAM_FREE_BUFFER(S) \
-	do { if ((S)->__modeflags & __FLAG_FREEBUF) free((S)->__bufstart); } while (0)
+#define __STDIO_STREAM_FREE_BUFFER(S)			\
+	do { if ((S)->__modeflags & __FLAG_FREEBUF)	\
+	free((S)->__bufstart); } while (0)
 #else
 #define __STDIO_STREAM_FREE_BUFFER(S) ((void)0)
 #endif
 
 #define __STDIO_STREAM_FREE_FILE(S) \
-	do { if ((S)->__modeflags & __FLAG_FREEFILE) free((S)); } while (0)
+	do { if ((S)->__modeflags & __FLAG_FREEFILE)	\
+	free((S)); } while (0)
 
 
 #ifdef __UCLIBC_HAS_LFS__
@@ -296,7 +276,7 @@ extern size_t __stdio_wcommit(FILE *__restrict stream) attribute_hidden;
 extern size_t __stdio_rfill(FILE *__restrict stream) attribute_hidden;
 
 extern size_t __stdio_fwrite(const unsigned char *__restrict buffer,
-				 size_t bytes, FILE *__restrict stream) attribute_hidden;
+		size_t bytes, FILE *__restrict stream) attribute_hidden;
 #else
 
 #define __stdio_fwrite(B,N,S)  __stdio_WRITE((S),(B),(N))
@@ -304,8 +284,9 @@ extern size_t __stdio_fwrite(const unsigned char *__restrict buffer,
 #endif
 
 extern size_t __stdio_WRITE(FILE *stream, const unsigned char *buf,
-							size_t bufsize) attribute_hidden;
-extern size_t __stdio_READ(FILE *stream, unsigned char *buf, size_t bufsize) attribute_hidden;
+		size_t bufsize) attribute_hidden;
+extern size_t __stdio_READ(FILE *stream, unsigned char *buf,
+		size_t bufsize) attribute_hidden;
 
 extern int __stdio_trans2r(FILE *__restrict stream) attribute_hidden;
 extern int __stdio_trans2w(FILE *__restrict stream) attribute_hidden;
@@ -338,14 +319,14 @@ extern int __stdio_trans2w_o(FILE *__restrict stream, int oflag) attribute_hidde
 /* Valid when reading... */
 #define __STDIO_STREAM_BUFFER_RAVAIL(S)		((S)->__bufread - (S)->__bufpos)
 #define __STDIO_STREAM_BUFFER_GET(S)		(*(S)->__bufpos++)
-#define __STDIO_FILL_READ_BUFFER(S)			__stdio_rfill((S))
+#define __STDIO_FILL_READ_BUFFER(S)		__stdio_rfill((S))
 
-#define __STDIO_STREAM_INIT_BUFREAD_BUFPOS(S) \
+#define __STDIO_STREAM_INIT_BUFREAD_BUFPOS(S)		\
 	(S)->__bufread = (S)->__bufpos = (S)->__bufstart
 
 
 #define __STDIO_STREAM_FAKE_VSNPRINTF_FILEDES		(-2)
-#define __STDIO_STREAM_FAKE_VSSCANF_FILEDES			(-2)
+#define __STDIO_STREAM_FAKE_VSSCANF_FILEDES		(-2)
 #define __STDIO_STREAM_FAKE_VSWPRINTF_FILEDES		(-3)
 #define __STDIO_STREAM_FAKE_VSWSCANF_FILEDES		(-3)
 
@@ -360,9 +341,9 @@ extern int __stdio_trans2w_o(FILE *__restrict stream, int oflag) attribute_hidde
 
 #else  /* __STDIO_BUFFERS */
 
-#define __STDIO_STREAM_IS_FBF(S)					(0)
-#define __STDIO_STREAM_IS_LBF(S)					(0)
-#define __STDIO_STREAM_IS_NBF(S)					(1)
+#define __STDIO_STREAM_IS_FBF(S)				(0)
+#define __STDIO_STREAM_IS_LBF(S)				(0)
+#define __STDIO_STREAM_IS_NBF(S)				(1)
 
 #define __STDIO_STREAM_BUFFER_SIZE(S)				(0)
 #define __STDIO_STREAM_BUFFER_ADD(S,C)				((void)0)
@@ -374,8 +355,8 @@ extern int __stdio_trans2w_o(FILE *__restrict stream, int oflag) attribute_hidde
 
 #define __STDIO_STREAM_BUFFER_RAVAIL(S)				(0)
 #define __STDIO_STREAM_BUFFER_GET(S)				(EOF)
-#define __STDIO_FILL_READ_BUFFER(S)					(0)
-#define __STDIO_STREAM_INIT_BUFREAD_BUFPOS(S)		((void)0)
+#define __STDIO_FILL_READ_BUFFER(S)				(0)
+#define __STDIO_STREAM_INIT_BUFREAD_BUFPOS(S)			((void)0)
 
 #undef __STDIO_STREAM_FAKE_VSNPRINTF_FILEDES
 #undef __STDIO_STREAM_FAKE_VSSCANF_FILEDES
@@ -386,14 +367,14 @@ extern int __stdio_trans2w_o(FILE *__restrict stream, int oflag) attribute_hidde
 #undef __STDIO_STREAM_IS_FAKE_VSWPRINTF
 
 # ifdef __USE_OLD_VFPRINTF__
-#  define __STDIO_STREAM_FAKE_VSNPRINTF_FILEDES_NB	(-2)
-#  define __STDIO_STREAM_IS_FAKE_VSNPRINTF_NB(S) \
+#  define __STDIO_STREAM_FAKE_VSNPRINTF_FILEDES_NB		(-2)
+#  define __STDIO_STREAM_IS_FAKE_VSNPRINTF_NB(S)		\
 	((S)->__filedes == __STDIO_STREAM_FAKE_VSNPRINTF_FILEDES_NB)
 # endif
 
 # ifndef __UCLIBC_HAS_WCHAR__
-#  define __STDIO_STREAM_FAKE_VSSCANF_FILEDES_NB	(-2)
-#  define __STDIO_STREAM_IS_FAKE_VSSCANF_NB(S) \
+#  define __STDIO_STREAM_FAKE_VSSCANF_FILEDES_NB		(-2)
+#  define __STDIO_STREAM_IS_FAKE_VSSCANF_NB(S)			\
 	((S)->__filedes == __STDIO_STREAM_FAKE_VSSCANF_FILEDES_NB)
 # endif
 
@@ -404,7 +385,8 @@ extern int __stdio_adjust_position(FILE *__restrict stream, __offmax_t *pos) att
 
 #ifdef __STDIO_HAS_OPENLIST
 	/* Uses an implementation hack!!! */
-#define __STDIO_FLUSH_LBF_STREAMS  fflush_unlocked((FILE *) &_stdio_openlist)
+#define __STDIO_FLUSH_LBF_STREAMS		\
+	fflush_unlocked((FILE *) &_stdio_openlist)
 #else
 #define __STDIO_FLUSH_LBF_STREAMS		((void)0)
 #endif
@@ -427,13 +409,12 @@ extern void _stdio_validate_FILE(const FILE *stream);
 
 /**********************************************************************/
 
-extern FILE *_stdio_fopen(intptr_t fname_or_mode,
-				  const char *__restrict mode,
-				  FILE *__restrict stream, int filedes) attribute_hidden;
+extern FILE *_stdio_fopen(intptr_t fname_or_mode, const char *__restrict mode,
+		FILE *__restrict stream, int filedes) attribute_hidden;
 
 #ifdef __UCLIBC_HAS_WCHAR__
-extern size_t _wstdio_fwrite(const wchar_t *__restrict ws, size_t n,
-						 FILE *__restrict stream) attribute_hidden;
+extern size_t _wstdio_fwrite(const wchar_t *__restrict ws,
+		size_t n, FILE *__restrict stream) attribute_hidden;
 #endif
 
 /**********************************************************************/
diff --git a/libc/stdio/fflush.c b/libc/stdio/fflush.c
index 84e2a26cc..e1527b3a3 100644
--- a/libc/stdio/fflush.c
+++ b/libc/stdio/fflush.c
@@ -15,31 +15,16 @@ libc_hidden_proto(fflush_unlocked)
 #warning WISHLIST: Add option to test for undefined behavior of fflush.
 #endif /* __UCLIBC_MJN3_ONLY__ */
 
-#ifdef __UCLIBC_HAS_THREADS__
 /* Even if the stream is set to user-locking, we still need to lock
  * when all (lbf) writing streams are flushed. */
 
-#define __MY_STDIO_THREADLOCK(__stream)										\
-	do {																	\
-		struct _pthread_cleanup_buffer __infunc_pthread_cleanup_buffer;		\
-	if (_stdio_user_locking != 2) { \
-			_pthread_cleanup_push_defer(&__infunc_pthread_cleanup_buffer,	\
-										__pthread_mutex_unlock,				\
-										&(__stream)->__lock);				\
-			__pthread_mutex_lock(&(__stream)->__lock);						\
-		}																	\
-		((void)0)
-
-#define __MY_STDIO_THREADUNLOCK(__stream)									\
-	if (_stdio_user_locking != 2) { \
-			_pthread_cleanup_pop_restore(&__infunc_pthread_cleanup_buffer,1);\
-		}																	\
-	} while (0)
-
-#else
-#define __MY_STDIO_THREADLOCK(STREAM)		((void)0)
-#define __MY_STDIO_THREADUNLOCK(STREAM)		((void)0)
-#endif
+#define __MY_STDIO_THREADLOCK(__stream)					\
+        __UCLIBC_MUTEX_CONDITIONAL_LOCK((__stream)->__lock,		\
+	(_stdio_user_locking != 2))
+
+#define __MY_STDIO_THREADUNLOCK(__stream)				\
+        __UCLIBC_MUTEX_CONDITIONAL_UNLOCK((__stream)->__lock,		\
+	(_stdio_user_locking != 2))
 
 #if defined(__UCLIBC_HAS_THREADS__) && defined(__STDIO_BUFFERS)
 void _stdio_openlist_dec_use(void)
diff --git a/libc/sysdeps/linux/common/bits/uClibc_stdio.h b/libc/sysdeps/linux/common/bits/uClibc_stdio.h
index 5865ce564..7efaed31f 100644
--- a/libc/sysdeps/linux/common/bits/uClibc_stdio.h
+++ b/libc/sysdeps/linux/common/bits/uClibc_stdio.h
@@ -322,6 +322,7 @@ struct __STDIO_FILE_STRUCT {
 #define __FLAG_FREEFILE		0x2000U
 #define __FLAG_FREEBUF		0x4000U
 #define __FLAG_LARGEFILE	0x8000U /* fixed! == 0_LARGEFILE for linux */
+#define __FLAG_FAILED_FREOPEN	__FLAG_LARGEFILE
 
 /* Note: In no-buffer mode, it would be possible to pack the necessary
  * flags into one byte.  Since we wouldn't be buffering and there would