bpo-41687: Fix error handling in Solaris sendfile implementation (GH-22128)

I just realized that my recent PR with sendfile on Solaris ([PR 22040](https://github.com/python/cpython/pull/22040)) has broken error handling.

Sorry for that, this simple followup fixes that.

Automerge-Triggered-By: @1st1
This commit is contained in:
Jakub Kulík 2020-09-09 21:29:42 +02:00 committed by GitHub
parent 76553e5d2e
commit fa8c9e7010
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@ -9521,14 +9521,13 @@ done:
#if defined(__sun) && defined(__SVR4)
// On Solaris, sendfile raises EINVAL rather than returning 0
// when the offset is equal or bigger than the in_fd size.
int res;
struct stat st;
do {
Py_BEGIN_ALLOW_THREADS
res = fstat(in_fd, &st);
ret = fstat(in_fd, &st);
Py_END_ALLOW_THREADS
} while (res != 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
} while (ret != 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (ret < 0)
return (!async_err) ? posix_error() : NULL;