diff options
Diffstat (limited to 'libio/iosetvbuf.c')
| -rw-r--r-- | libio/iosetvbuf.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/libio/iosetvbuf.c b/libio/iosetvbuf.c index 396ef2f..6d4bcff 100644 --- a/libio/iosetvbuf.c +++ b/libio/iosetvbuf.c @@ -35,7 +35,9 @@ _IO_setvbuf (fp, buf, mode, size) int mode; _IO_size_t size; { + int result; CHECK_FILE (fp, EOF); + _IO_flockfile (fp); switch (mode) { case _IOFBF: @@ -58,25 +60,36 @@ _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_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_funlockfile (fp); + return result; } weak_alias (_IO_setvbuf, setvbuf) |