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Patches #749830, #1144555: allow UNIX mmap size to default to current

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file size.
This commit is contained in:
Martin v. Löwis 2005-03-03 11:22:44 +00:00
parent df37c8c1ad
commit 7fe60c0a0a
5 changed files with 53 additions and 7 deletions
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13
Modules/mmapmodule.c
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@ -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);