Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (38 commits)
  net: Expose all network devices in a namespaces in sysfs
  hotplug: netns aware uevent_helper
  kobj: Send hotplug events in the proper namespace.
  netlink: Implment netlink_broadcast_filtered
  net/sysfs: Fix the bitrot in network device kobject namespace support
  netns: Teach network device kobjects which namespace they are in.
  kobject: Send hotplug events in all network namespaces
  driver-core: fix Typo in drivers/base/core.c for CONFIG_MODULE
  pci: check caps from sysfs file open to read device dependent config space
  sysfs: add struct file* to bin_attr callbacks
  sysfs: Remove usage of S_BIAS to avoid merge conflict with the vfs tree
  sysfs: Don't use enums in inline function declaration.
  sysfs-namespaces: add a high-level Documentation file
  sysfs: Comment sysfs directory tagging logic
  driver core: Implement ns directory support for device classes.
  sysfs: Implement sysfs_delete_link
  sysfs: Add support for tagged directories with untagged members.
  sysfs: Implement sysfs tagged directory support.
  kobj: Add basic infrastructure for dealing with namespaces.
  sysfs: Remove double free sysfs_get_sb
  ...

1 files changed, 32 insertions, 3 deletions

diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c
index 942f239a2132..f71246bebfe4 100644
--- a/fs/sysfs/symlink.c
+++ b/fs/sysfs/symlink.c
@@ -58,6 +58,8 @@ static int sysfs_do_create_link(struct kobject *kobj, struct kobject *target,
         if (!sd)
                 goto out_put;
 
+        if (sysfs_ns_type(parent_sd))
+                sd->s_ns = target->ktype->namespace(target);
         sd->s_symlink.target_sd = target_sd;
         target_sd = NULL;       /* reference is now owned by the symlink */
 
@@ -107,6 +109,26 @@ int sysfs_create_link_nowarn(struct kobject *kobj, struct kobject *target,
 }
 
 /**
+ *      sysfs_delete_link - remove symlink in object's directory.
+ *      @kobj:  object we're acting for.
+ *      @targ:  object we're pointing to.
+ *      @name:  name of the symlink to remove.
+ *
+ *      Unlike sysfs_remove_link sysfs_delete_link has enough information
+ *      to successfully delete symlinks in tagged directories.
+ */
+void sysfs_delete_link(struct kobject *kobj, struct kobject *targ,
+                        const char *name)
+{
+        const void *ns = NULL;
+        spin_lock(&sysfs_assoc_lock);
+        if (targ->sd)
+                ns = targ->sd->s_ns;
+        spin_unlock(&sysfs_assoc_lock);
+        sysfs_hash_and_remove(kobj->sd, ns, name);
+}
+
+/**
  *      sysfs_remove_link - remove symlink in object's directory.
  *      @kobj:  object we're acting for.
  *      @name:  name of the symlink to remove.
@@ -121,7 +143,7 @@ void sysfs_remove_link(struct kobject * kobj, const char * name)
         else
                 parent_sd = kobj->sd;
 
-        sysfs_hash_and_remove(parent_sd, name);
+        sysfs_hash_and_remove(parent_sd, NULL, name);
 }
 
 /**
@@ -137,6 +159,7 @@ int sysfs_rename_link(struct kobject *kobj, struct kobject *targ,
                         const char *old, const char *new)
 {
         struct sysfs_dirent *parent_sd, *sd = NULL;
+        const void *old_ns = NULL, *new_ns = NULL;
         int result;
 
         if (!kobj)
@@ -144,8 +167,11 @@ int sysfs_rename_link(struct kobject *kobj, struct kobject *targ,
         else
                 parent_sd = kobj->sd;
 
+        if (targ->sd)
+                old_ns = targ->sd->s_ns;
+
         result = -ENOENT;
-        sd = sysfs_get_dirent(parent_sd, old);
+        sd = sysfs_get_dirent(parent_sd, old_ns, old);
         if (!sd)
                 goto out;
 
@@ -155,7 +181,10 @@ int sysfs_rename_link(struct kobject *kobj, struct kobject *targ,
         if (sd->s_symlink.target_sd->s_dir.kobj != targ)
                 goto out;
 
-        result = sysfs_rename(sd, parent_sd, new);
+        if (sysfs_ns_type(parent_sd))
+                new_ns = targ->ktype->namespace(targ);
+
+        result = sysfs_rename(sd, parent_sd, new_ns, new);
 
 out:
         sysfs_put(sd);