static int builtin_uaccess(struct udev_device *dev, int argc, char *argv[], bool test)
{
int r;
const char *path = NULL, *seat;
bool changed_acl = false;
uid_t uid;
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
umask(0022);
/* don't muck around with ACLs when the system is not running systemd */
if (!logind_running())
return 0;
path = udev_device_get_devnode(dev);
seat = udev_device_get_property_value(dev, "ID_SEAT");
if (!seat)
seat = "seat0";
r = sd_seat_get_active(seat, NULL, &uid);
if (r == -ENOENT) {
/* No active session on this seat */
r = 0;
goto finish;
} else if (r < 0) {
log_error("Failed to determine active user on seat %s.", seat);
goto finish;
}
r = devnode_acl(path, true, false, 0, true, uid);
if (r < 0) {
log_error("Failed to apply ACL on %s: %s", path, strerror(-r));
goto finish;
}
changed_acl = true;
r = 0;
finish:
if (path && !changed_acl) {
int k;
/* Better be safe than sorry and reset ACL */
k = devnode_acl(path, true, false, 0, false, 0);
if (k < 0) {
log_error("Failed to apply ACL on %s: %s", path, strerror(-k));
if (r >= 0)
r = k;
}
}
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
static int builtin_uaccess(sd_device *dev, int argc, char *argv[], bool test) {
const char *path = NULL, *seat;
bool changed_acl = false;
uid_t uid;
int r;
umask(0022);
/* don't muck around with ACLs when the system is not running systemd */
if (!logind_running())
return 0;
r = sd_device_get_devname(dev, &path);
if (r < 0) {
log_device_error_errno(dev, r, "Failed to get device name: %m");
goto finish;
}
if (sd_device_get_property_value(dev, "ID_SEAT", &seat) < 0)
seat = "seat0";
r = sd_seat_get_active(seat, NULL, &uid);
if (r < 0) {
if (IN_SET(r, -ENXIO, -ENODATA))
/* No active session on this seat */
r = 0;
else
log_device_error_errno(dev, r, "Failed to determine active user on seat %s: %m", seat);
goto finish;
}
r = devnode_acl(path, true, false, 0, true, uid);
if (r < 0) {
log_device_full(dev, r == -ENOENT ? LOG_DEBUG : LOG_ERR, r, "Failed to apply ACL: %m");
goto finish;
}
changed_acl = true;
r = 0;
finish:
if (path && !changed_acl) {
int k;
/* Better be safe than sorry and reset ACL */
k = devnode_acl(path, true, false, 0, false, 0);
if (k < 0) {
log_device_full(dev, k == -ENOENT ? LOG_DEBUG : LOG_ERR, k, "Failed to apply ACL: %m");
if (r >= 0)
r = k;
}
}
return r;
}
