/*
- * Copyright (C) 2004-2010 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2004-2012 Kay Sievers <kay@vrfy.org>
* Copyright (C) 2009 Canonical Ltd.
* Copyright (C) 2009 Scott James Remnant <scott@netsplit.com>
*
* set to cloexec since we need our children to be able to add
* watches for us
*/
-int udev_watch_init(struct udev *udev)
-{
+int udev_watch_init(struct udev *udev) {
inotify_fd = inotify_init1(IN_CLOEXEC);
if (inotify_fd < 0)
- err(udev, "inotify_init failed: %m\n");
+ log_error_errno(errno, "inotify_init failed: %m");
return inotify_fd;
}
/* move any old watches directory out of the way, and then restore
* the watches
*/
-void udev_watch_restore(struct udev *udev)
-{
- char filename[UTIL_PATH_SIZE], oldname[UTIL_PATH_SIZE];
-
+void udev_watch_restore(struct udev *udev) {
if (inotify_fd < 0)
return;
- util_strscpyl(oldname, sizeof(oldname), udev_get_run_path(udev), "/watch.old", NULL);
- util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/watch", NULL);
- if (rename(filename, oldname) == 0) {
+ if (rename("/run/udev/watch", "/run/udev/watch.old") == 0) {
DIR *dir;
struct dirent *ent;
- dir = opendir(oldname);
+ dir = opendir("/run/udev/watch.old");
if (dir == NULL) {
- err(udev, "unable to open old watches dir '%s', old watches will not be restored: %m", oldname);
+ log_error_errno(errno, "unable to open old watches dir /run/udev/watch.old; old watches will not be restored: %m");
return;
}
for (ent = readdir(dir); ent != NULL; ent = readdir(dir)) {
char device[UTIL_PATH_SIZE];
- char *s;
- size_t l;
ssize_t len;
struct udev_device *dev;
if (ent->d_name[0] == '.')
continue;
- s = device;
- l = util_strpcpy(&s, sizeof(device), udev_get_sys_path(udev));
- len = readlinkat(dirfd(dir), ent->d_name, s, l);
- if (len <= 0 || len == (ssize_t)l)
+ len = readlinkat(dirfd(dir), ent->d_name, device, sizeof(device));
+ if (len <= 0 || len == (ssize_t)sizeof(device))
goto unlink;
- s[len] = '\0';
+ device[len] = '\0';
- dev = udev_device_new_from_id_filename(udev, s);
+ dev = udev_device_new_from_device_id(udev, device);
if (dev == NULL)
goto unlink;
- info(udev, "restoring old watch on '%s'\n", udev_device_get_devnode(dev));
+ log_debug("restoring old watch on '%s'", udev_device_get_devnode(dev));
udev_watch_begin(udev, dev);
udev_device_unref(dev);
unlink:
}
closedir(dir);
- rmdir(oldname);
+ rmdir("/run/udev/watch.old");
} else if (errno != ENOENT) {
- err(udev, "unable to move watches dir '%s', old watches will not be restored: %m", filename);
+ log_error_errno(errno, "unable to move watches dir /run/udev/watch; old watches will not be restored: %m");
}
}
-void udev_watch_begin(struct udev *udev, struct udev_device *dev)
-{
+void udev_watch_begin(struct udev *udev, struct udev_device *dev) {
char filename[UTIL_PATH_SIZE];
int wd;
+ int r;
if (inotify_fd < 0)
return;
- info(udev, "adding watch on '%s'\n", udev_device_get_devnode(dev));
+ log_debug("adding watch on '%s'", udev_device_get_devnode(dev));
wd = inotify_add_watch(inotify_fd, udev_device_get_devnode(dev), IN_CLOSE_WRITE);
if (wd < 0) {
- err(udev, "inotify_add_watch(%d, %s, %o) failed: %m\n",
+ log_error_errno(errno, "inotify_add_watch(%d, %s, %o) failed: %m",
inotify_fd, udev_device_get_devnode(dev), IN_CLOSE_WRITE);
return;
}
- snprintf(filename, sizeof(filename), "%s/watch/%d", udev_get_run_path(udev), wd);
- util_create_path(udev, filename);
+ snprintf(filename, sizeof(filename), "/run/udev/watch/%d", wd);
+ mkdir_parents(filename, 0755);
unlink(filename);
- symlink(udev_device_get_id_filename(dev), filename);
+ r = symlink(udev_device_get_id_filename(dev), filename);
+ if (r < 0)
+ log_error_errno(errno, "Failed to create symlink %s: %m", filename);
udev_device_set_watch_handle(dev, wd);
}
-void udev_watch_end(struct udev *udev, struct udev_device *dev)
-{
+void udev_watch_end(struct udev *udev, struct udev_device *dev) {
int wd;
char filename[UTIL_PATH_SIZE];
if (wd < 0)
return;
- info(udev, "removing watch on '%s'\n", udev_device_get_devnode(dev));
+ log_debug("removing watch on '%s'", udev_device_get_devnode(dev));
inotify_rm_watch(inotify_fd, wd);
- snprintf(filename, sizeof(filename), "%s/watch/%d", udev_get_run_path(udev), wd);
+ snprintf(filename, sizeof(filename), "/run/udev/watch/%d", wd);
unlink(filename);
udev_device_set_watch_handle(dev, -1);
}
-struct udev_device *udev_watch_lookup(struct udev *udev, int wd)
-{
+struct udev_device *udev_watch_lookup(struct udev *udev, int wd) {
char filename[UTIL_PATH_SIZE];
- char majmin[UTIL_PATH_SIZE];
- char *s;
- size_t l;
+ char device[UTIL_NAME_SIZE];
ssize_t len;
if (inotify_fd < 0 || wd < 0)
return NULL;
- snprintf(filename, sizeof(filename), "%s/watch/%d", udev_get_run_path(udev), wd);
- s = majmin;
- l = util_strpcpy(&s, sizeof(majmin), udev_get_sys_path(udev));
- len = readlink(filename, s, l);
- if (len <= 0 || (size_t)len == l)
+ snprintf(filename, sizeof(filename), "/run/udev/watch/%d", wd);
+ len = readlink(filename, device, sizeof(device));
+ if (len <= 0 || (size_t)len == sizeof(device))
return NULL;
- s[len] = '\0';
+ device[len] = '\0';
- return udev_device_new_from_id_filename(udev, s);
+ return udev_device_new_from_device_id(udev, device);
}
~ianmdlvl / elogind.git / blobdiff