diff options
Diffstat (limited to 'newlib/libc/stdio/setvbuf.c')
| -rw-r--r-- | newlib/libc/stdio/setvbuf.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/newlib/libc/stdio/setvbuf.c b/newlib/libc/stdio/setvbuf.c index 357ea5142..d44cdba5f 100644 --- a/newlib/libc/stdio/setvbuf.c +++ b/newlib/libc/stdio/setvbuf.c @@ -103,6 +103,9 @@ _DEFUN (setvbuf, (fp, buf, mode, size), register size_t size) { int ret = 0; + + _flockfile(fp); + CHECK_INIT (fp); /* @@ -111,7 +114,10 @@ _DEFUN (setvbuf, (fp, buf, mode, size), */ if ((mode != _IOFBF && mode != _IOLBF && mode != _IONBF) || (int)(_POINTER_INT) size < 0) - return (EOF); + { + _funlockfile(fp); + return (EOF); + } /* * Write current buffer, if any; drop read count, if any. @@ -145,15 +151,16 @@ _DEFUN (setvbuf, (fp, buf, mode, size), size = BUFSIZ; } if (buf == NULL) - { - /* Can't allocate it, let's try another approach */ + { + /* Can't allocate it, let's try another approach */ nbf: - fp->_flags |= __SNBF; - fp->_w = 0; - fp->_bf._base = fp->_p = fp->_nbuf; - fp->_bf._size = 1; - return (ret); - } + fp->_flags |= __SNBF; + fp->_w = 0; + fp->_bf._base = fp->_p = fp->_nbuf; + fp->_bf._size = 1; + _funlockfile(fp); + return (ret); + } fp->_flags |= __SMBF; } /* @@ -186,5 +193,6 @@ nbf: if (fp->_flags & __SWR) fp->_w = fp->_flags & (__SLBF | __SNBF) ? 0 : size; + _funlockfile(fp); return 0; } |