diff options
Diffstat (limited to 'Modules/mmapmodule.c')
| -rw-r--r-- | Modules/mmapmodule.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c index e1a2f42..aaa4925 100644 --- a/Modules/mmapmodule.c +++ b/Modules/mmapmodule.c @@ -896,11 +896,14 @@ new_mmap_object(PyObject *self, PyObject *args, PyObject *kwdict) /* on OpenVMS we must ensure that all bytes are written to the file */ fsync(fd); # endif - if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode) && - (size_t)map_size > st.st_size) { - PyErr_SetString(PyExc_ValueError, - "mmap length is greater than file size"); - return NULL; + if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode)) { + if (map_size == 0) { + map_size = (int)st.st_size; + } else if ((size_t)map_size > st.st_size) { + PyErr_SetString(PyExc_ValueError, + "mmap length is greater than file size"); + return NULL; + } } #endif m_obj = PyObject_New (mmap_object, &mmap_object_type); |