static-nodes: move creation of static nodes from udevd to tmpfiles

As of kmod v14, it is possible to export the static node information from
/lib/modules/`uname -r`/modules.devname in tmpfiles.d(5) format.

Use this functionality to let systemd-tmpfilesd create the static device nodes
at boot, and drop the functionality from systemd-udevd.

As an effect of this we can move from systemd-udevd to systemd-tmpfiles-setup-dev:

 * the conditional CAP_MKNOD (replaced by checking if /sys is mounted rw)
 * ordering before local-fs-pre.target (see 89d09e1b5c65a2d97840f682e0932c8bb499f166)

1 files changed, 0 insertions, 72 deletions

diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index 7d13b4f532..c4127cd03b 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -812,77 +812,6 @@ static void handle_signal(struct udev *udev, int signo)
         }
 }
 
-static void static_dev_create_from_modules(struct udev *udev)
-{
-        struct utsname kernel;
-        char modules[UTIL_PATH_SIZE];
-        char buf[4096];
-        FILE *f;
-
-        if (uname(&kernel) < 0) {
-                log_error("uname failed: %m");
-                return;
-        }
-
-        strscpyl(modules, sizeof(modules), ROOTPREFIX "/lib/modules/", kernel.release, "/modules.devname", NULL);
-        f = fopen(modules, "re");
-        if (f == NULL)
-                return;
-
-        while (fgets(buf, sizeof(buf), f) != NULL) {
-                char *s;
-                const char *modname;
-                const char *devname;
-                const char *devno;
-                int maj, min;
-                char type;
-                mode_t mode;
-                char filename[UTIL_PATH_SIZE];
-
-                if (buf[0] == '#')
-                        continue;
-
-                modname = buf;
-                s = strchr(modname, ' ');
-                if (s == NULL)
-                        continue;
-                s[0] = '\0';
-
-                devname = &s[1];
-                s = strchr(devname, ' ');
-                if (s == NULL)
-                        continue;
-                s[0] = '\0';
-
-                devno = &s[1];
-                s = strchr(devno, ' ');
-                if (s == NULL)
-                        s = strchr(devno, '\n');
-                if (s != NULL)
-                        s[0] = '\0';
-                if (sscanf(devno, "%c%u:%u", &type, &maj, &min) != 3)
-                        continue;
-
-                mode  = 0600;
-                if (type == 'c')
-                        mode |= S_IFCHR;
-                else if (type == 'b')
-                        mode |= S_IFBLK;
-                else
-                        continue;
-
-                strscpyl(filename, sizeof(filename), "/dev/", devname, NULL);
-                mkdir_parents_label(filename, 0755);
-                label_context_set(filename, mode);
-                log_debug("mknod '%s' %c%u:%u\n", filename, type, maj, min);
-                if (mknod(filename, mode, makedev(maj, min)) < 0 && errno == EEXIST)
-                        utimensat(AT_FDCWD, filename, NULL, 0);
-                label_context_clear();
-        }
-
-        fclose(f);
-}
-
 static int systemd_fds(struct udev *udev, int *rctrl, int *rnetlink)
 {
         int ctrl = -1, netlink = -1;
@@ -1067,7 +996,6 @@ int main(int argc, char *argv[])
         mkdir("/run/udev", 0755);
 
         dev_setup(NULL);
-        static_dev_create_from_modules(udev);
 
         /* before opening new files, make sure std{in,out,err} fds are in a sane state */
         if (daemonize) {