along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
+#include <ftw.h>
#include <string.h>
#include <unistd.h>
#include <libkmod.h>
#endif
+#include "alloc-util.h"
#include "bus-util.h"
#include "capability-util.h"
+#include "fileio.h"
#include "kmod-setup.h"
#include "macro.h"
+#include "string-util.h"
#ifdef HAVE_KMOD
static void systemd_kmod_log(
}
#endif
+static int has_virtio_rng_nftw_cb(
+ const char *fpath,
+ const struct stat *sb,
+ int tflag,
+ struct FTW *ftwbuf) {
+
+ _cleanup_free_ char *alias = NULL;
+ int r;
+
+ if ((FTW_D == tflag) && (ftwbuf->level > 2))
+ return FTW_SKIP_SUBTREE;
+
+ if (FTW_F != tflag)
+ return FTW_CONTINUE;
+
+ if (!endswith(fpath, "/modalias"))
+ return FTW_CONTINUE;
+
+ r = read_one_line_file(fpath, &alias);
+ if (r < 0)
+ return FTW_SKIP_SIBLINGS;
+
+ if (startswith(alias, "pci:v00001AF4d00001005"))
+ return FTW_STOP;
+
+ if (startswith(alias, "pci:v00001AF4d00001044"))
+ return FTW_STOP;
+
+ return FTW_SKIP_SIBLINGS;
+}
+
+static bool has_virtio_rng(void) {
+ return (nftw("/sys/devices/pci0000:00", has_virtio_rng_nftw_cb, 64, FTW_MOUNT|FTW_PHYS|FTW_ACTIONRETVAL) == FTW_STOP);
+}
+
int kmod_setup(void) {
#ifdef HAVE_KMOD
/* netfilter is needed by networkd, nspawn among others, and cannot be autoloaded */
{ "ip_tables", "/proc/net/ip_tables_names", false, false, NULL },
#endif
+ /* virtio_rng would be loaded by udev later, but real entropy might be needed very early */
+ { "virtio_rng", NULL, false, false, has_virtio_rng },
};
struct kmod_ctx *ctx = NULL;
unsigned int i;