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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2014-06-22 10:38:36 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-06-23 17:38:00 +0300 |
| commit | 4f8586144161d5e680fdef3e09b7e8e9111c2929 (patch) | |
| tree | 124dff54d53f5eba6a6f0493c7eafffcccf1750f /qemu-char.c | |
| parent | 684531ad1f69feb1288b9813c3eb47fba992ea96 (diff) | |
| download | qemu-4f8586144161d5e680fdef3e09b7e8e9111c2929.tar.gz | |
qemu-char: fix qemu_chr_fe_get_msgfd()
Commit c76bf6bb8fbbb233a7d3641e09229d23747d5ee3 ("Add chardev API
qemu_chr_fe_get_msgfds") broke qemu_chr_fe_get_msgfd() because it
changed the return value.
Callers expect -1 if no fd is available. The commit changed the return
value to 0 (which is a valid file descriptor number) so callers always
detected a file descriptor even if none was available.
This patch fixes qemu-iotests 045:
$ cd tests/qemu-iotests && ./check 045
[...]
+FAIL: test_add_fd_invalid_fd (__main__.TestFdSets)
+----------------------------------------------------------------------
+Traceback (most recent call last):
+ File "./045", line 123, in test_add_fd_invalid_fd
+ self.assert_qmp(result, 'error/class', 'GenericError')
+ File "/home/stefanha/qemu/tests/qemu-iotests/iotests.py", line 232, in assert_qmp
+ result = self.dictpath(d, path)
+ File "/home/stefanha/qemu/tests/qemu-iotests/iotests.py", line 211, in dictpath
+ self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
+AssertionError: failed path traversal for "error/class" in "{u'return': {u'fdset-id': 2, u'fd': 0}}"
Cc: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'qemu-char.c')
| -rw-r--r-- | qemu-char.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/qemu-char.c b/qemu-char.c index e4eb985b57..d9100a2201 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -204,7 +204,7 @@ void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len) int qemu_chr_fe_get_msgfd(CharDriverState *s) { int fd; - return (qemu_chr_fe_get_msgfds(s, &fd, 1) >= 0) ? fd : -1; + return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1; } int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len) |