diff options
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/stdio/makebuf.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/lib/libc/stdio/makebuf.c b/lib/libc/stdio/makebuf.c index 7b244324702..4ebc3e93362 100644 --- a/lib/libc/stdio/makebuf.c +++ b/lib/libc/stdio/makebuf.c @@ -35,7 +35,7 @@ */ #if defined(LIBC_SCCS) && !defined(lint) -static char rcsid[] = "$OpenBSD: makebuf.c,v 1.2 1996/08/19 08:32:54 tholo Exp $"; +static char rcsid[] = "$OpenBSD: makebuf.c,v 1.3 1998/11/25 05:18:49 millert Exp $"; #endif /* LIBC_SCCS and not lint */ #include <sys/types.h> @@ -100,8 +100,8 @@ __swhatbuf(fp, bufsize, couldbetty) } /* could be a tty iff it is a character device */ - *couldbetty = (st.st_mode & S_IFMT) == S_IFCHR; - if (st.st_blksize <= 0) { + *couldbetty = S_ISCHR(st.st_mode); + if (st.st_blksize == 0) { *bufsize = BUFSIZ; return (__SNPT); } @@ -111,8 +111,10 @@ __swhatbuf(fp, bufsize, couldbetty) * __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; + if ((fp->_flags & __SSTR) == 0) { + *bufsize = st.st_blksize; + fp->_blksize = st.st_blksize; + } return ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek ? __SOPT : __SNPT); } |