| 39,13 → 39,10 |
|---|
| struct _reent *ptr _AND |
| register FILE *fp) |
| { |
| register size_t size, couldbetty; |
| register _PTR p; |
| #ifdef __USE_INTERNAL_STAT64 |
| struct stat64 st; |
| #else |
| struct stat st; |
| #endif |
| int flags; |
| size_t size; |
| int couldbetty; |
| |
| if (fp->_flags & __SNBF) |
| { |
| 53,49 → 50,7 |
|---|
| fp->_bf._size = 1; |
| return; |
| } |
| #ifdef __USE_INTERNAL_STAT64 |
| if (fp->_file < 0 || _fstat64_r (ptr, fp->_file, &st) < 0) |
| #else |
| if (fp->_file < 0 || _fstat_r (ptr, fp->_file, &st) < 0) |
| #endif |
| { |
| couldbetty = 0; |
| /* Check if we are be called by asprintf family for initial buffer. */ |
| if (fp->_flags & __SMBF) |
| size = _DEFAULT_ASPRINTF_BUFSIZE; |
| else |
| size = BUFSIZ; |
| #ifdef _FSEEK_OPTIMIZATION |
| /* do not try to optimise fseek() */ |
| fp->_flags |= __SNPT; |
| #endif |
| } |
| else |
| { |
| couldbetty = (st.st_mode & S_IFMT) == S_IFCHR; |
| #ifdef HAVE_BLKSIZE |
| size = st.st_blksize <= 0 ? BUFSIZ : st.st_blksize; |
| #else |
| size = BUFSIZ; |
| #endif |
| #ifdef _FSEEK_OPTIMIZATION |
| /* |
| * Optimize fseek() only if it is a regular file. |
| * (The test for __sseek is mainly paranoia.) |
| */ |
| if ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek) |
| { |
| fp->_flags |= __SOPT; |
| #ifdef HAVE_BLKSIZE |
| fp->_blksize = st.st_blksize; |
| #else |
| fp->_blksize = 1024; |
| #endif |
| } |
| else |
| fp->_flags |= __SNPT; |
| #endif |
| } |
| flags = __swhatbuf_r (ptr, fp, &size, &couldbetty); |
| if ((p = _malloc_r (ptr, size)) == NULL) |
| { |
| if (!(fp->_flags & __SSTR)) |
| 113,5 → 68,60 |
|---|
| fp->_bf._size = size; |
| if (couldbetty && _isatty_r (ptr, fp->_file)) |
| fp->_flags |= __SLBF; |
| fp->_flags |= flags; |
| } |
| } |
| |
| /* |
| * Internal routine to determine `proper' buffering for a file. |
| */ |
| int |
| _DEFUN(__swhatbuf_r, (ptr, fp, bufsize, couldbetty), |
| struct _reent *ptr _AND |
| FILE *fp _AND |
| size_t *bufsize _AND |
| int *couldbetty) |
| { |
| #ifdef _FSEEK_OPTIMIZATION |
| const int snpt = __SNPT; |
| #else |
| const int snpt = 0; |
| #endif |
| |
| #ifdef __USE_INTERNAL_STAT64 |
| struct stat64 st; |
| |
| if (fp->_file < 0 || _fstat64_r (ptr, fp->_file, &st) < 0) |
| #else |
| struct stat st; |
| |
| if (fp->_file < 0 || _fstat_r (ptr, fp->_file, &st) < 0) |
| #endif |
| { |
| *couldbetty = 0; |
| /* Check if we are be called by asprintf family for initial buffer. */ |
| if (fp->_flags & __SMBF) |
| *bufsize = _DEFAULT_ASPRINTF_BUFSIZE; |
| else |
| *bufsize = BUFSIZ; |
| return (0); |
| } |
| |
| /* could be a tty iff it is a character device */ |
| *couldbetty = S_ISCHR(st.st_mode); |
| #ifdef HAVE_BLKSIZE |
| if (st.st_blksize > 0) |
| { |
| /* |
| * Optimise fseek() only if it is a regular file. (The test for |
| * __sseek is mainly paranoia.) It is safe to set _blksize |
| * unconditionally; it will only be used if __SOPT is also set. |
| */ |
| *bufsize = st.st_blksize; |
| fp->_blksize = st.st_blksize; |
| return ((st.st_mode & S_IFMT) == S_IFREG ? __SOPT : snpt); |
| } |
| #endif |
| *bufsize = BUFSIZ; |
| return (snpt); |
| } |