* invoke vhangup() before and after invoking getty
-* skip readahead on physically r/o media
-
* support "auto" and "comment=systemd.automount" at the same time for an fstab entry
* Make use of UnknownInterface, UnknownObject
int main(int argc, char *argv[]) {
int r;
+ const char *root;
log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
log_parse_environment();
if ((r = parse_argv(argc, argv)) <= 0)
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ root = optind < argc ? argv[optind] : "/";
+
+ if (fs_on_read_only(root) > 0) {
+ log_info("Disabling readahead collector due to read-only media.");
+ return 0;
+ }
+
if (!enough_ram()) {
log_info("Disabling readahead collector due to low memory.");
return 0;
shared->collect = getpid();
__sync_synchronize();
- if (collect(optind < argc ? argv[optind] : "/") < 0)
+ if (collect(root) < 0)
return 1;
return 0;
return b;
}
+int fs_on_read_only(const char *p) {
+ struct stat st;
+ struct udev *udev = NULL;
+ struct udev_device *udev_device = NULL;
+ bool b = false;
+ const char *read_only;
+
+ assert(p);
+
+ if (stat(p, &st) < 0)
+ return -errno;
+
+ if (major(st.st_dev) == 0)
+ return false;
+
+ if (!(udev = udev_new()))
+ return -ENOMEM;
+
+ if (!(udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev)))
+ goto finish;
+
+ if ((read_only = udev_device_get_sysattr_value(udev_device, "ro")))
+ if ((b = streq(read_only, "1")))
+ goto finish;
+
+finish:
+ if (udev_device)
+ udev_device_unref(udev_device);
+
+ if (udev)
+ udev_unref(udev);
+
+ return b;
+}
+
bool enough_ram(void) {
struct sysinfo si;
int file_verify(int fd, const char *fn, off_t file_size_max, struct stat *st);
int fs_on_ssd(const char *p);
+int fs_on_read_only(const char *p);
bool enough_ram(void);
int main(int argc, char*argv[]) {
int r;
+ const char *root;
log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
log_parse_environment();
if ((r = parse_argv(argc, argv)) <= 0)
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ root = optind < argc ? argv[optind] : "/";
+
if (!enough_ram()) {
log_info("Disabling readahead replay due to low memory.");
return 0;
shared->replay = getpid();
__sync_synchronize();
- if (replay(optind < argc ? argv[optind] : "/") < 0)
+ if (replay(root) < 0)
return 1;
return 0;