X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fudev%2Fudev-watch.c;h=9b694c66667e03e560aa4e6a1e1d937c2f5973f3;hp=968728eba9e84c6ddd317daec506a3d7008fb802;hb=c79bb9e4e2e5b96b2ae2c432bf8b0ff9674fce60;hpb=baa30fbc2c04b23209d0b8fb3c86cd15ef9ea81a

diff --git a/src/udev/udev-watch.c b/src/udev/udev-watch.c
index 968728eba..9b694c666 100644
--- a/src/udev/udev-watch.c
+++ b/src/udev/udev-watch.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004-2012 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>
  *
@@ -49,41 +49,33 @@ int udev_watch_init(struct udev *udev)
  */
 void udev_watch_restore(struct udev *udev)
 {
-        char filename[UTIL_PATH_SIZE], oldname[UTIL_PATH_SIZE];
-
         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) {
-                        log_error("unable to open old watches dir '%s', old watches will not be restored: %m", oldname);
+                        log_error("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;
 
@@ -95,10 +87,10 @@ unlink:
                 }
 
                 closedir(dir);
-                rmdir(oldname);
+                rmdir("/run/udev/watch.old");
 
         } else if (errno != ENOENT) {
-                log_error("unable to move watches dir '%s', old watches will not be restored: %m", filename);
+                log_error("unable to move watches dir /run/udev/watch; old watches will not be restored: %m");
         }
 }
 
@@ -106,6 +98,7 @@ 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;
@@ -118,10 +111,12 @@ void udev_watch_begin(struct udev *udev, struct udev_device *dev)
                 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("Failed to create symlink %s: %m", filename);
 
         udev_device_set_watch_handle(dev, wd);
 }
@@ -141,7 +136,7 @@ void udev_watch_end(struct udev *udev, struct udev_device *dev)
         log_debug("removing watch on '%s'\n", 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);
@@ -150,21 +145,17 @@ void udev_watch_end(struct udev *udev, struct udev_device *dev)
 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);
 }