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Issue #23152: Implement _Py_fstat() to support files larger than 2 GB on Windows.

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fstat() may fail with EOVERFLOW on files larger than 2 GB because the file size type is an signed 32-bit integer.
This commit is contained in:
Steve Dower 2015-02-21 08:44:05 -08:00
parent 18d1924987
commit f2f373f593
12 changed files with 242 additions and 180 deletions
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6
Python/random.c
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@ -139,14 +139,14 @@ dev_urandom_python(char *buffer, Py_ssize_t size)
{
int fd;
Py_ssize_t n;
struct stat st;
struct _Py_stat_struct st;
if (size <= 0)
return 0;
if (urandom_cache.fd >= 0) {
/* Does the fd point to the same thing as before? (issue #21207) */
if (fstat(urandom_cache.fd, &st)
if (_Py_fstat(urandom_cache.fd, &st)
|| st.st_dev != urandom_cache.st_dev
|| st.st_ino != urandom_cache.st_ino) {
/* Something changed: forget the cached fd (but don't close it,
@ -178,7 +178,7 @@ dev_urandom_python(char *buffer, Py_ssize_t size)
fd = urandom_cache.fd;
}
else {
if (fstat(fd, &st)) {
if (_Py_fstat(fd, &st)) {
PyErr_SetFromErrno(PyExc_OSError);
close(fd);
return -1;