assert(fn);
if ((fd = open(fn, O_RDONLY|O_CLOEXEC|O_NOATIME|O_NOCTTY|O_NOFOLLOW)) < 0) {
+
+ if (errno == ENOENT)
+ return 0;
+
+ if (errno == EPERM || errno == EACCES)
+ return 0;
+
log_warning("open(%s) failed: %m", fn);
r = -errno;
goto finish;
char_array_0(fn);
if ((k = readlink_malloc(fn, &p)) >= 0) {
-
if (startswith(p, "/tmp") ||
+ endswith(p, " (deleted)") ||
hashmap_get(files, p))
/* Not interesting, or
* already read */
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;
}
+ if (detect_virtualization(NULL) > 0) {
+ log_info("Disabling readahead collector due to execution in virtualized environment.");
+ return 0;
+ }
+
if (!(shared = shared_get()))
return 1;
shared->collect = getpid();
__sync_synchronize();
- if (collect(optind < argc ? argv[optind] : "/") < 0)
+ if (collect(root) < 0)
return 1;
return 0;