diff options
Diffstat (limited to 'src/backlight/backlight.c')
| -rw-r--r-- | src/backlight/backlight.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/src/backlight/backlight.c b/src/backlight/backlight.c index 51a67a042..e8cdad61e 100644 --- a/src/backlight/backlight.c +++ b/src/backlight/backlight.c @@ -195,8 +195,8 @@ static bool validate_device(struct udev *udev, struct udev_device *device) { int main(int argc, char *argv[]) { _cleanup_udev_unref_ struct udev *udev = NULL; _cleanup_udev_device_unref_ struct udev_device *device = NULL; - _cleanup_free_ char *saved = NULL, *ss = NULL; - const char *sysname; + _cleanup_free_ char *saved = NULL, *ss = NULL, *escaped_ss = NULL, *escaped_sysname = NULL, *escaped_path_id = NULL; + const char *sysname, *path_id; int r; if (argc != 3) { @@ -252,7 +252,30 @@ int main(int argc, char *argv[]) { return EXIT_FAILURE; } - saved = strjoin("/var/lib/systemd/backlight/", ss, ":", sysname, NULL); + escaped_ss = cescape(ss); + if (!escaped_ss) { + log_oom(); + return EXIT_FAILURE; + } + + escaped_sysname = cescape(sysname); + if (!escaped_sysname) { + log_oom(); + return EXIT_FAILURE; + } + + path_id = udev_device_get_property_value(device, "ID_PATH"); + if (path_id) { + escaped_path_id = cescape(path_id); + if (!escaped_path_id) { + log_oom(); + return EXIT_FAILURE; + } + + saved = strjoin("/var/lib/systemd/backlight/", escaped_path_id, ":", escaped_ss, ":", escaped_sysname, NULL); + } else + saved = strjoin("/var/lib/systemd/backlight/", escaped_ss, ":", escaped_sysname, NULL); + if (!saved) { log_oom(); return EXIT_FAILURE; |