chiark / gitweb /
docs: do not generate tmpl files
[elogind.git] / src / udev / udevd.c
index 97b910cc2e87961d2868add5aa3a077bd432255b..162551098ba67f4a26501a2d39fd627506c0cba4 100644 (file)
@@ -47,6 +47,7 @@
 #include "udev.h"
 #include "sd-daemon.h"
 #include "cgroup-util.h"
+#include "dev-setup.h"
 
 static bool debug;
 
@@ -327,7 +328,7 @@ static void worker_new(struct event *event)
                                 int fdcount;
                                 int i;
 
-                                fdcount = epoll_wait(fd_ep, ev, ARRAY_SIZE(ev), -1);
+                                fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), -1);
                                 if (fdcount < 0) {
                                         if (errno == EINTR)
                                                 continue;
@@ -856,53 +857,18 @@ static void static_dev_create_from_modules(struct udev *udev)
                 else
                         continue;
 
-                util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/", devname, NULL);
-                util_create_path_selinux(udev, filename);
-                udev_selinux_setfscreatecon(udev, filename, mode);
+                util_strscpyl(filename, sizeof(filename), "/dev/", devname, NULL);
+                mkdir_parents(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);
-                udev_selinux_resetfscreatecon(udev);
+                label_context_clear();
         }
 
         fclose(f);
 }
 
-/* needed for standalone udev operations */
-static void static_dev_create_links(struct udev *udev)
-{
-        DIR *dir;
-        struct stdlinks {
-                const char *link;
-                const char *target;
-        };
-        static const struct stdlinks stdlinks[] = {
-                { "core", "/proc/kcore" },
-                { "fd", "/proc/self/fd" },
-                { "stdin", "/proc/self/fd/0" },
-                { "stdout", "/proc/self/fd/1" },
-                { "stderr", "/proc/self/fd/2" },
-        };
-        unsigned int i;
-
-        dir = opendir(udev_get_dev_path(udev));
-        if (dir == NULL)
-                return;
-
-        for (i = 0; i < ARRAY_SIZE(stdlinks); i++) {
-                struct stat sb;
-
-                if (stat(stdlinks[i].target, &sb) == 0) {
-                        udev_selinux_setfscreateconat(udev, dirfd(dir), stdlinks[i].link, S_IFLNK);
-                        if (symlinkat(stdlinks[i].target, dirfd(dir), stdlinks[i].link) < 0 && errno == EEXIST)
-                                utimensat(dirfd(dir), stdlinks[i].link, NULL, AT_SYMLINK_NOFOLLOW);
-                        udev_selinux_resetfscreatecon(udev);
-                }
-        }
-
-        closedir(dir);
-}
-
 static int mem_size_mb(void)
 {
         FILE *f;
@@ -934,16 +900,15 @@ static int convert_db(struct udev *udev)
         struct udev_list_entry *list_entry;
 
         /* current database */
-        util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data", NULL);
-        if (access(filename, F_OK) >= 0)
+        if (access("/run/udev/data", F_OK) >= 0)
                 return 0;
 
         /* make sure we do not get here again */
-        util_create_path(udev, filename);
+        mkdir_parents("/run/udev/data", 0755);
         mkdir(filename, 0755);
 
         /* old database */
-        util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/.udev/db", NULL);
+        util_strscpyl(filename, sizeof(filename), "/dev/.udev/db", NULL);
         if (access(filename, F_OK) < 0)
                 return 0;
 
@@ -976,7 +941,7 @@ static int convert_db(struct udev *udev)
 
                         /* find database in old location */
                         id = udev_device_get_id_filename(device);
-                        util_strscpyl(from, sizeof(from), udev_get_dev_path(udev), "/.udev/db/", id, NULL);
+                        util_strscpyl(from, sizeof(from), "/dev/.udev/db/", id, NULL);
                         if (lstat(from, &stats) == 0) {
                                 if (!have_db) {
                                         udev_device_read_db(device, from);
@@ -986,9 +951,8 @@ static int convert_db(struct udev *udev)
                         }
 
                         /* find old database with $subsys:$sysname name */
-                        util_strscpyl(from, sizeof(from), udev_get_dev_path(udev),
-                                     "/.udev/db/", udev_device_get_subsystem(device), ":",
-                                     udev_device_get_sysname(device), NULL);
+                        util_strscpyl(from, sizeof(from), "/dev/.udev/db/",
+                                      udev_device_get_subsystem(device), ":", udev_device_get_sysname(device), NULL);
                         if (lstat(from, &stats) == 0) {
                                 if (!have_db) {
                                         udev_device_read_db(device, from);
@@ -999,7 +963,7 @@ static int convert_db(struct udev *udev)
 
                         /* find old database with the encoded devpath name */
                         util_path_encode(udev_device_get_devpath(device), devpath, sizeof(devpath));
-                        util_strscpyl(from, sizeof(from), udev_get_dev_path(udev), "/.udev/db/", devpath, NULL);
+                        util_strscpyl(from, sizeof(from), "/dev/.udev/db/", devpath, NULL);
                         if (lstat(from, &stats) == 0) {
                                 if (!have_db) {
                                         udev_device_read_db(device, from);
@@ -1054,36 +1018,6 @@ static int systemd_fds(struct udev *udev, int *rctrl, int *rnetlink)
         return 0;
 }
 
-static bool check_rules_timestamp(struct udev *udev)
-{
-        char **p;
-        unsigned long long *stamp_usec;
-        int i, n;
-        bool changed = false;
-
-        n = udev_get_rules_path(udev, &p, &stamp_usec);
-        for (i = 0; i < n; i++) {
-                struct stat stats;
-
-                if (stat(p[i], &stats) < 0)
-                        continue;
-
-                if (stamp_usec[i] == ts_usec(&stats.st_mtim))
-                        continue;
-
-                /* first check */
-                if (stamp_usec[i] != 0) {
-                        log_debug("reload - timestamp of '%s' changed\n", p[i]);
-                        changed = true;
-                }
-
-                /* update timestamp */
-                stamp_usec[i] = ts_usec(&stats.st_mtim);
-        }
-
-        return changed;
-}
-
 int main(int argc, char *argv[])
 {
         struct udev *udev;
@@ -1116,7 +1050,7 @@ int main(int argc, char *argv[])
         log_parse_environment();
         udev_set_log_fn(udev, udev_main_log);
         log_debug("version %s\n", VERSION);
-        udev_selinux_init(udev);
+        label_init("/dev");
 
         for (;;) {
                 int option;
@@ -1216,11 +1150,9 @@ int main(int argc, char *argv[])
         chdir("/");
         umask(022);
 
-        /* /run/udev */
-        mkdir(udev_get_run_path(udev), 0755);
+        mkdir("/run/udev", 0755);
 
-        /* create standard links, copy static nodes, create nodes from modules */
-        static_dev_create_links(udev);
+        dev_setup();
         static_dev_create_from_modules(udev);
 
         /* before opening new files, make sure std{in,out,err} fds are in a sane state */
@@ -1496,7 +1428,7 @@ int main(int argc, char *argv[])
                         /* kill idle or hanging workers */
                         timeout = 3 * 1000;
                 }
-                fdcount = epoll_wait(fd_ep, ev, ARRAY_SIZE(ev), timeout);
+                fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), timeout);
                 if (fdcount < 0)
                         continue;
 
@@ -1557,7 +1489,7 @@ int main(int argc, char *argv[])
 
                 /* check for changed config, every 3 seconds at most */
                 if ((now_usec() - last_usec) > 3 * 1000 * 1000) {
-                        if (check_rules_timestamp(udev))
+                        if (udev_rules_check_timestamp(rules))
                                 reload = true;
                         if (udev_builtin_validate(udev))
                                 reload = true;
@@ -1647,7 +1579,7 @@ exit_daemonize:
         udev_queue_export_unref(udev_queue_export);
         udev_ctrl_connection_unref(ctrl_conn);
         udev_ctrl_unref(udev_ctrl);
-        udev_selinux_exit(udev);
+        label_finish();
         udev_unref(udev);
         log_close();
         return rc;