| 67,8 → 67,10 |
|---|
| |
| /* Flush a single file, or (if fp is NULL) all files. */ |
| |
| /* Core function which does not lock file pointer. This gets called |
| directly from __srefill. */ |
| int |
| _DEFUN(_fflush_r, (ptr, fp), |
| _DEFUN(__sflush_r, (ptr, fp), |
| struct _reent *ptr _AND |
| register FILE * fp) |
| { |
| 75,29 → 77,6 |
|---|
| register unsigned char *p; |
| register int n, t; |
| |
| #ifdef _REENT_SMALL |
| /* For REENT_SMALL platforms, it is possible we are being |
| called for the first time on a std stream. This std |
| stream can belong to a reentrant struct that is not |
| _REENT. If CHECK_INIT gets called below based on _REENT, |
| we will end up changing said file pointers to the equivalent |
| std stream off of _REENT. This causes unexpected behavior if |
| there is any data to flush on the _REENT std stream. There |
| are two alternatives to fix this: 1) make a reentrant fflush |
| or 2) simply recognize that this file has nothing to flush |
| and return immediately before performing a CHECK_INIT. Choice |
| 2 is implemented here due to its simplicity. */ |
| if (fp->_bf._base == NULL) |
| return 0; |
| #endif /* _REENT_SMALL */ |
| |
| CHECK_INIT (ptr, fp); |
| |
| if (!fp->_flags) |
| return 0; |
| |
| _flockfile (fp); |
| |
| t = fp->_flags; |
| if ((t & __SWR) == 0) |
| { |
| 150,7 → 129,6 |
|---|
| } |
| else |
| fp->_flags |= __SERR; |
| _funlockfile (fp); |
| return result; |
| } |
| } |
| 186,17 → 164,14 |
|---|
| else |
| { |
| fp->_flags |= __SERR; |
| _funlockfile (fp); |
| return EOF; |
| } |
| } |
| _funlockfile (fp); |
| return 0; |
| } |
| if ((p = fp->_bf._base) == NULL) |
| { |
| /* Nothing to flush. */ |
| _funlockfile (fp); |
| return 0; |
| } |
| n = fp->_p - p; /* write this much */ |
| 215,16 → 190,48 |
|---|
| if (t <= 0) |
| { |
| fp->_flags |= __SERR; |
| _funlockfile (fp); |
| return EOF; |
| } |
| p += t; |
| n -= t; |
| } |
| _funlockfile (fp); |
| return 0; |
| } |
| |
| int |
| _DEFUN(_fflush_r, (ptr, fp), |
| struct _reent *ptr _AND |
| register FILE * fp) |
| { |
| int ret; |
| |
| #ifdef _REENT_SMALL |
| /* For REENT_SMALL platforms, it is possible we are being |
| called for the first time on a std stream. This std |
| stream can belong to a reentrant struct that is not |
| _REENT. If CHECK_INIT gets called below based on _REENT, |
| we will end up changing said file pointers to the equivalent |
| std stream off of _REENT. This causes unexpected behavior if |
| there is any data to flush on the _REENT std stream. There |
| are two alternatives to fix this: 1) make a reentrant fflush |
| or 2) simply recognize that this file has nothing to flush |
| and return immediately before performing a CHECK_INIT. Choice |
| 2 is implemented here due to its simplicity. */ |
| if (fp->_bf._base == NULL) |
| return 0; |
| #endif /* _REENT_SMALL */ |
| |
| CHECK_INIT (ptr, fp); |
| |
| if (!fp->_flags) |
| return 0; |
| |
| _flockfile (fp); |
| ret = __sflush_r (ptr, fp); |
| _funlockfile (fp); |
| return ret; |
| } |
| |
| #ifndef _REENT_ONLY |
| |
| int |