along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include "util.h"
-#include "mkdir.h"
+#include "alloc-util.h"
+#include "def.h"
+#include "escape.h"
#include "fileio.h"
#include "libudev.h"
+#include "mkdir.h"
+#include "parse-util.h"
+#include "proc-cmdline.h"
+#include "string-util.h"
#include "udev-util.h"
-#include "def.h"
+#include "util.h"
static struct udev_device *find_pci_or_platform_parent(struct udev_device *device) {
struct udev_device *parent;
r = mkdir_p("/var/lib/systemd/backlight", 0755);
if (r < 0) {
- log_error("Failed to create backlight directory /var/lib/systemd/backlight: %s",
- strerror(-r));
+ log_error_errno(r, "Failed to create backlight directory /var/lib/systemd/backlight: %m");
return EXIT_FAILURE;
}
device = udev_device_new_from_subsystem_sysname(udev, ss, sysname);
if (!device) {
if (errno != 0)
- log_error("Failed to get backlight or LED device '%s:%s': %m", ss, sysname);
+ log_error_errno(errno, "Failed to get backlight or LED device '%s:%s': %m", ss, sysname);
else
log_oom();
if (streq(argv[1], "load")) {
_cleanup_free_ char *value = NULL;
+ const char *clamp;
- if (!shall_restore_state())
+ if (shall_restore_state() == 0)
return EXIT_SUCCESS;
if (!validate_device(udev, device))
return EXIT_FAILURE;
}
- clamp_brightness(device, &value, max_brightness);
+ clamp = udev_device_get_property_value(device, "ID_BACKLIGHT_CLAMP");
+ if (!clamp || parse_boolean(clamp) != 0) /* default to clamping */
+ clamp_brightness(device, &value, max_brightness);
r = udev_device_set_sysattr_value(device, "brightness", value);
if (r < 0) {
- log_error("Failed to write system 'brightness' attribute: %s",
- strerror(-r));
+ log_error_errno(r, "Failed to write system 'brightness' attribute: %m");
return EXIT_FAILURE;
}
return EXIT_FAILURE;
}
- r = write_string_file(saved, value);
+ r = write_string_file(saved, value, WRITE_STRING_FILE_CREATE);
if (r < 0) {
log_error_errno(r, "Failed to write %s: %m", saved);
return EXIT_FAILURE;