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udev/udev-ctrl.c:udev_ctrl_new_from_fd() enable SO_PASSCRED

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Avoid "sender uid=65534, message ignored" case, where no credentials can
be read on the sender side.

Seems, the server socket does not enable credential receiving fast
enough, and the message from the client (without credential) sometimes
is queued before the credential passing was active.
This commit is contained in:
Harald Hoyer 2013-04-08 19:59:20 +02:00
parent d4b7fecb05
commit b97caef538
1 changed files with 2 additions and 0 deletions
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2
src/udev/udev-ctrl.c
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@ -73,6 +73,7 @@ struct udev_ctrl_connection {
struct udev_ctrl *udev_ctrl_new_from_fd(struct udev *udev, int fd)
{
struct udev_ctrl *uctrl;
const int on = 1;
uctrl = calloc(1, sizeof(struct udev_ctrl));
if (uctrl == NULL)
@ -91,6 +92,7 @@ struct udev_ctrl *udev_ctrl_new_from_fd(struct udev *udev, int fd)
uctrl->bound = true;
uctrl->sock = fd;
}
setsockopt(uctrl->sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on));
uctrl->saddr.sun_family = AF_LOCAL;
strscpy(uctrl->saddr.sun_path, sizeof(uctrl->saddr.sun_path), "/run/udev/control");