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Support old uinput interface #257

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Support old uinput interface #257

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41 changes: 30 additions & 11 deletions Daemon/ydotoold.c
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Original file line number Diff line number Diff line change
Expand Up @@ -149,19 +149,38 @@ static void uinput_setup(int fd, enum ydotool_uinput_setup_options setup_opt) {
}
}

static const struct uinput_setup usetup = {
.name = "ydotoold virtual device",
.id = {
.bustype = BUS_VIRTUAL,
.vendor = 0x2333,
.product = 0x6666,
.version = 1
int rc, version;
rc = ioctl(fd, UI_GET_VERSION, &version);

// https://kernel.org/doc/html/latest/input/uinput.html#uinput-old-interface
if (rc == 0 && version >= 5) {
static const struct uinput_setup usetup = {
.name = "ydotoold virtual device",
.id = {
.bustype = BUS_VIRTUAL,
.vendor = 0x2333,
.product = 0x6666,
.version = 1
}
};

if (ioctl(fd, UI_DEV_SETUP, &usetup)) {
perror("UI_DEV_SETUP ioctl failed");
exit(2);
}
};
} else {
// see /include/uapi/linux/uinput.h
static const struct uinput_user_dev uud = {
.name = "ydotoold virtual device",
.id = {
.bustype = BUS_VIRTUAL,
.vendor = 0x2333,
.product = 0x6666,
.version = 1
}
};

if (ioctl(fd, UI_DEV_SETUP, &usetup)) {
perror("UI_DEV_SETUP ioctl failed");
exit(2);
write(fd, &uud, sizeof(uud));
}

if (ioctl(fd, UI_DEV_CREATE)) {
Expand Down