diff options
| -rw-r--r-- | src/ib-brightness-control.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/ib-brightness-control.c b/src/ib-brightness-control.c index cf1e5ad..2b9b79d 100644 --- a/src/ib-brightness-control.c +++ b/src/ib-brightness-control.c @@ -18,6 +18,8 @@ */ #include <gudev/gudev.h> + +#include <errno.h> #include <stdlib.h> #include <fcntl.h> #include <string.h> @@ -75,6 +77,7 @@ ib_brightness_control_set_value (IbBrightnessControl* self, gint value) gchar *filename; gchar *svalue; gint length; + gint err; if (self->path == NULL) return; @@ -90,9 +93,12 @@ ib_brightness_control_set_value (IbBrightnessControl* self, gint value) svalue = g_strdup_printf ("%i", value); length = strlen (svalue); + err = errno; + errno = 0; if (write (fd, svalue, length) != length) { - g_warning ("Fail to write brightness information."); + g_warning ("Fail to write brightness information: %s", g_strerror(errno)); } + errno = err; close (fd); g_free (svalue); |