diff options
Diffstat (limited to 'src/core/kmod-setup.c')
| -rw-r--r-- | src/core/kmod-setup.c | 49 |
1 files changed, 45 insertions, 4 deletions
diff --git a/src/core/kmod-setup.c b/src/core/kmod-setup.c index fd1021f706..066b959770 100644 --- a/src/core/kmod-setup.c +++ b/src/core/kmod-setup.c @@ -17,19 +17,23 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ +#include <ftw.h> #include <string.h> #include <unistd.h> -#ifdef HAVE_KMOD +#if HAVE_KMOD #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 +#if HAVE_KMOD static void systemd_kmod_log( void *data, int priority, @@ -43,10 +47,45 @@ static void systemd_kmod_log( log_internalv(LOG_DEBUG, 0, file, line, fn, format, args); REENABLE_WARNING; } + +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); +} #endif int kmod_setup(void) { -#ifdef HAVE_KMOD +#if HAVE_KMOD static const struct { const char *module; @@ -64,10 +103,12 @@ int kmod_setup(void) { /* this should never be a module */ { "unix", "/proc/net/unix", true, true, NULL }, -#ifdef HAVE_LIBIPTC +#if HAVE_LIBIPTC /* 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; |