diff options
Diffstat (limited to 'libio/iosetvbuf.c')
| -rw-r--r-- | libio/iosetvbuf.c | 76 |
1 files changed, 49 insertions, 27 deletions
diff --git a/libio/iosetvbuf.c b/libio/iosetvbuf.c index 1b2da4f104c..65eeea51a6f 100644 --- a/libio/iosetvbuf.c +++ b/libio/iosetvbuf.c @@ -1,26 +1,27 @@ -/* -Copyright (C) 1993 Free Software Foundation +/* Copyright (C) 1993, 1996, 1997 Free Software Foundation, Inc. + This file is part of the GNU IO Library. -This file is part of the GNU IO Library. This library is free -software; you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, or (at your option) -any later version. + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. -This library is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + This library is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. -You should have received a copy of the GNU General Public License -along with this library; see the file COPYING. If not, write to the Free -Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + You should have received a copy of the GNU General Public License + along with this library; see the file COPYING. If not, write to + the Free Software Foundation, 59 Temple Place - Suite 330, Boston, + MA 02111-1307, USA. -As a special exception, if you link this library with files -compiled with a GNU compiler to produce an executable, this does not cause -the resulting executable to be covered by the GNU General Public License. -This exception does not however invalidate any other reasons why -the executable file might be covered by the GNU General Public License. */ + As a special exception, if you link this library with files + compiled with a GNU compiler to produce an executable, this does + not cause the resulting executable to be covered by the GNU General + Public License. This exception does not however invalidate any + other reasons why the executable file might be covered by the GNU + General Public License. */ #include "libioP.h" @@ -29,10 +30,16 @@ the executable file might be covered by the GNU General Public License. */ #define _IONBF 2 /* No buffering. */ int -DEFUN(_IO_setvbuf, (fp, buf, mode, size), - _IO_FILE* fp AND char* buf AND int mode AND _IO_size_t size) +_IO_setvbuf (fp, buf, mode, size) + _IO_FILE *fp; + char *buf; + int mode; + _IO_size_t size; { - CHECK_FILE(fp, EOF); + int result; + CHECK_FILE (fp, EOF); + _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp); + _IO_flockfile (fp); switch (mode) { case _IOFBF: @@ -55,24 +62,39 @@ DEFUN(_IO_setvbuf, (fp, buf, mode, size), A possibly cleaner alternative would be to add an extra flag, but then flags are a finite resource. */ if (_IO_DOALLOCATE (fp) < 0) - return EOF; + { + result = EOF; + goto unlock_return; + } fp->_IO_file_flags &= ~_IO_LINE_BUF; } - return 0; + result = 0; + goto unlock_return; } break; case _IOLBF: fp->_IO_file_flags &= ~_IO_UNBUFFERED; fp->_IO_file_flags |= _IO_LINE_BUF; if (buf == NULL) - return 0; + { + result = 0; + goto unlock_return; + } break; case _IONBF: buf = NULL; size = 0; break; default: - return EOF; + result = EOF; + goto unlock_return; } - return _IO_SETBUF (fp, buf, size) == NULL ? EOF : 0; + result = _IO_SETBUF (fp, buf, size) == NULL ? EOF : 0; +unlock_return: + _IO_cleanup_region_end (1); + return result; } + +#ifdef weak_alias +weak_alias (_IO_setvbuf, setvbuf) +#endif |
