diff options
Diffstat (limited to 'win32')
| -rw-r--r-- | win32/win32.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/win32/win32.c b/win32/win32.c index 80c9f748ba..872fcd013c 100644 --- a/win32/win32.c +++ b/win32/win32.c @@ -4316,6 +4316,10 @@ rb_w32_read(int fd, void *buf, size_t size) if (is_socket(sock)) return rb_w32_recv(fd, buf, size, 0); + // validate fd by using _get_osfhandle() because we cannot access _nhandle + if (_get_osfhandle(fd) == -1) { + return -1; + } if (!(_osfile(fd) & FOPEN)) { errno = EBADF; return -1; @@ -4434,6 +4438,10 @@ rb_w32_write(int fd, const void *buf, size_t size) if (is_socket(sock)) return rb_w32_send(fd, buf, size, 0); + // validate fd by using _get_osfhandle() because we cannot access _nhandle + if (_get_osfhandle(fd) == -1) { + return -1; + } if (!(_osfile(fd) & FOPEN)) { errno = EBADF; return -1; @@ -4686,6 +4694,10 @@ rb_w32_unlink(const char *path) int rb_w32_isatty(int fd) { + // validate fd by using _get_osfhandle() because we cannot access _nhandle + if (_get_osfhandle(fd) == -1) { + return 0; + } if (!(_osfile(fd) & FOPEN)) { errno = EBADF; return 0; |