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py_getrandom(): use long type for the syscall() result

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Issue #27278. It should fix a conversion warning.

In practice, the Linux kernel doesn't return more than 32 MB per call to the
getrandom() syscall.
This commit is contained in:
Victor Stinner 2016-06-16 23:53:47 +02:00
parent adef6460d7
commit ec721f3305
1 changed files with 2 additions and 2 deletions
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4
Python/random.c
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@ -132,7 +132,7 @@ py_getrandom(void *buffer, Py_ssize_t size, int raise)
* see https://bugs.python.org/issue26839. To avoid this, use the * see https://bugs.python.org/issue26839. To avoid this, use the
* GRND_NONBLOCK flag. */ * GRND_NONBLOCK flag. */
const int flags = GRND_NONBLOCK; const int flags = GRND_NONBLOCK;
int n; long n;
if (!getrandom_works) if (!getrandom_works)
return 0; return 0;
@ -143,7 +143,7 @@ py_getrandom(void *buffer, Py_ssize_t size, int raise)
to 1024 bytes */ to 1024 bytes */
n = Py_MIN(size, 1024); n = Py_MIN(size, 1024);
#else #else
n = Py_MIN(size, INT_MAX); n = Py_MIN(size, LONG_MAX);
#endif #endif
errno = 0; errno = 0;