#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/inotify.h>
+#include <sys/utsname.h>
#include "udev.h"
udev_list_node_remove(&event->node);
/* mark as failed, if "add" event returns non-zero */
- if (event->exitcode != 0 && strcmp(udev_device_get_action(event->dev), "add") == 0)
+ if (event->exitcode != 0 && strcmp(udev_device_get_action(event->dev), "remove") != 0)
udev_queue_export_device_failed(udev_queue_export, event->dev);
else
udev_queue_export_device_finished(udev_queue_export, event->dev);
if (udev_device_get_event_timeout(dev) >= 0)
alarm(udev_device_get_event_timeout(dev));
- /* execute RUN= */
- if (err == 0 && udev_get_run(udev_event->udev))
- failed = udev_event_execute_run(udev_event,
- &orig_sigmask);
+ if (err == 0)
+ failed = udev_event_execute_run(udev_event, &orig_sigmask);
- /* reset alarm */
alarm(0);
/* apply/restore inotify watch */
/* send processed event back to libudev listeners */
udev_monitor_send_device(worker_monitor, NULL, dev);
- /* send back the result of the event execution */
+ /* send udevd the result of the event execution */
if (err != 0)
msg.exitcode = err;
else if (failed != 0)
}
}
-static void event_run(struct event *event)
+static void event_run(struct event *event, bool force)
{
struct udev_list_node *loop;
return;
}
- if (childs >= max_childs) {
+ if (!force && childs >= max_childs) {
info(event->udev, "maximum number (%i) of childs reached\n", childs);
return;
}
/* run all events with a timeout set immediately */
if (udev_device_get_timeout(dev) > 0) {
- worker_new(event);
+ event_run(event, true);
return;
}
}
}
}
-static int mem_size_mb(void)
-{
- FILE *f;
- char buf[4096];
- long int memsize = -1;
-
- f = fopen("/proc/meminfo", "r");
- if (f == NULL)
- return -1;
-
- while (fgets(buf, sizeof(buf), f) != NULL) {
- long int value;
-
- if (sscanf(buf, "MemTotal: %ld kB", &value) == 1) {
- memsize = value / 1024;
- break;
- }
- }
-
- fclose(f);
- return memsize;
-}
-
/* lookup event for identical, parent, child device */
static bool is_devpath_busy(struct event *event)
{
continue;
}
- event_run(event);
+ event_run(event, false);
}
}
ev = (struct inotify_event *)(buf + pos);
if (ev->len) {
- dbg(udev, "inotify event: %x for %s\n", ev->mask, ev->name);
+ const char *s;
+
+ info(udev, "inotify event: %x for %s\n", ev->mask, ev->name);
+ s = strstr(ev->name, ".rules");
+ if (s == NULL)
+ continue;
+ if (strlen(s) != strlen(".rules"))
+ continue;
reload_config = true;
continue;
}
dev = udev_watch_lookup(udev, ev->wd);
if (dev != NULL) {
- dbg(udev, "inotify event: %x for %s\n", ev->mask, udev_device_get_devnode(dev));
+ info(udev, "inotify event: %x for %s\n", ev->mask, udev_device_get_devnode(dev));
if (ev->mask & IN_CLOSE_WRITE) {
char filename[UTIL_PATH_SIZE];
int fd;
}
}
+static void static_dev_create_from_modules(struct udev *udev)
+{
+ struct utsname kernel;
+ char modules[UTIL_PATH_SIZE];
+ char buf[4096];
+ FILE *f;
+
+ uname(&kernel);
+ util_strscpyl(modules, sizeof(modules), "/lib/modules/", kernel.release, "/modules.devname", NULL);
+ f = fopen(modules, "r");
+ 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;
+
+ if (type == 'c')
+ mode = 0600 | S_IFCHR;
+ else if (type == 'b')
+ mode = 0600 | S_IFBLK;
+ else
+ continue;
+
+ util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/", devname, NULL);
+ util_create_path(udev, filename);
+ udev_selinux_setfscreatecon(udev, filename, mode);
+ info(udev, "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);
+ }
+
+ fclose(f);
+}
+
+static int copy_dir(struct udev *udev, DIR *dir_from, DIR *dir_to, int maxdepth)
+{
+ struct dirent *dent;
+
+ for (dent = readdir(dir_from); dent != NULL; dent = readdir(dir_from)) {
+ struct stat stats;
+
+ if (dent->d_name[0] == '.')
+ continue;
+ if (fstatat(dirfd(dir_from), dent->d_name, &stats, AT_SYMLINK_NOFOLLOW) != 0)
+ continue;
+
+ if (S_ISBLK(stats.st_mode) || S_ISCHR(stats.st_mode)) {
+ udev_selinux_setfscreateconat(udev, dirfd(dir_to), dent->d_name, stats.st_mode & 0777);
+ if (mknodat(dirfd(dir_to), dent->d_name, stats.st_mode, stats.st_rdev) == 0) {
+ fchmodat(dirfd(dir_to), dent->d_name, stats.st_mode & 0777, 0);
+ fchownat(dirfd(dir_to), dent->d_name, stats.st_uid, stats.st_gid, 0);
+ } else {
+ utimensat(dirfd(dir_to), dent->d_name, NULL, 0);
+ }
+ udev_selinux_resetfscreatecon(udev);
+ } else if (S_ISLNK(stats.st_mode)) {
+ char target[UTIL_PATH_SIZE];
+ ssize_t len;
+
+ len = readlinkat(dirfd(dir_from), dent->d_name, target, sizeof(target));
+ if (len <= 0 || len == (ssize_t)sizeof(target))
+ continue;
+ target[len] = '\0';
+ udev_selinux_setfscreateconat(udev, dirfd(dir_to), dent->d_name, S_IFLNK);
+ if (symlinkat(target, dirfd(dir_to), dent->d_name) < 0 && errno == EEXIST)
+ utimensat(dirfd(dir_to), dent->d_name, NULL, AT_SYMLINK_NOFOLLOW);
+ udev_selinux_resetfscreatecon(udev);
+ } else if (S_ISDIR(stats.st_mode)) {
+ DIR *dir2_from, *dir2_to;
+
+ if (maxdepth == 0)
+ continue;
+
+ udev_selinux_setfscreateconat(udev, dirfd(dir_to), dent->d_name, S_IFDIR|0755);
+ mkdirat(dirfd(dir_to), dent->d_name, 0755);
+ udev_selinux_resetfscreatecon(udev);
+
+ dir2_to = fdopendir(openat(dirfd(dir_to), dent->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC));
+ if (dir2_to == NULL)
+ continue;
+
+ dir2_from = fdopendir(openat(dirfd(dir_from), dent->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC));
+ if (dir2_from == NULL) {
+ closedir(dir2_to);
+ continue;
+ }
+
+ copy_dir(udev, dir2_from, dir2_to, maxdepth-1);
+
+ closedir(dir2_to);
+ closedir(dir2_from);
+ }
+ }
+
+ return 0;
+}
+
+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;
+
+ for (i = 0; i < ARRAY_SIZE(stdlinks); i++) {
+ 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);
+ }
+}
+
+static void static_dev_create_from_devices(struct udev *udev, DIR *dir)
+{
+ DIR *dir_from;
+
+ dir_from = opendir(LIBEXECDIR "/devices");
+ if (dir_from == NULL)
+ return;
+ copy_dir(udev, dir_from, dir, 8);
+ closedir(dir_from);
+}
+
+static void static_dev_create(struct udev *udev)
+{
+ DIR *dir;
+
+ dir = opendir(udev_get_dev_path(udev));
+ if (dir == NULL)
+ return;
+
+ static_dev_create_links(udev, dir);
+ static_dev_create_from_devices(udev, dir);
+
+ closedir(dir);
+}
+
+static int mem_size_mb(void)
+{
+ FILE *f;
+ char buf[4096];
+ long int memsize = -1;
+
+ f = fopen("/proc/meminfo", "r");
+ if (f == NULL)
+ return -1;
+
+ while (fgets(buf, sizeof(buf), f) != NULL) {
+ long int value;
+
+ if (sscanf(buf, "MemTotal: %ld kB", &value) == 1) {
+ memsize = value / 1024;
+ break;
+ }
+ }
+
+ fclose(f);
+ return memsize;
+}
+
int main(int argc, char *argv[])
{
struct udev *udev;
if (udev_get_rules_path(udev) != NULL) {
inotify_add_watch(pfd[FD_INOTIFY].fd, udev_get_rules_path(udev),
- IN_CREATE | IN_DELETE | IN_MOVE | IN_CLOSE_WRITE);
+ IN_DELETE | IN_MOVE | IN_CLOSE_WRITE);
} else {
char filename[UTIL_PATH_SIZE];
struct stat statbuf;
inotify_add_watch(pfd[FD_INOTIFY].fd, LIBEXECDIR "/rules.d",
- IN_CREATE | IN_DELETE | IN_MOVE | IN_CLOSE_WRITE);
+ IN_DELETE | IN_MOVE | IN_CLOSE_WRITE);
inotify_add_watch(pfd[FD_INOTIFY].fd, SYSCONFDIR "/udev/rules.d",
- IN_CREATE | IN_DELETE | IN_MOVE | IN_CLOSE_WRITE);
+ IN_DELETE | IN_MOVE | IN_CLOSE_WRITE);
/* watch dynamic rules directory */
util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/.udev/rules.d", NULL);
udev_selinux_resetfscreatecon(udev);
}
inotify_add_watch(pfd[FD_INOTIFY].fd, filename,
- IN_CREATE | IN_DELETE | IN_MOVE | IN_CLOSE_WRITE);
+ IN_DELETE | IN_MOVE | IN_CLOSE_WRITE);
}
udev_watch_restore(udev);
max_childs = strtoul(value, NULL, 10);
info(udev, "initialize max_childs to %u\n", max_childs);
+ static_dev_create(udev);
+ static_dev_create_from_modules(udev);
+ udev_rules_apply_static_dev_perms(rules);
+
udev_list_init(&event_list);
udev_list_init(&worker_list);