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authorChristian Brauner <christian.brauner@ubuntu.com>2021-01-21 14:19:43 +0100
committerChristian Brauner <christian.brauner@ubuntu.com>2021-01-24 14:27:20 +0100
commit549c7297717c32ee53f156cd949e055e601f67bb (patch)
treed096bc02f780bdee69a701952d5568f4be9972c1 /fs/adfs
parent1ab29965b30599c797266eb3b970b4e6c8de3672 (diff)
fs: make helpers idmap mount aware
Extend some inode methods with an additional user namespace argument. A filesystem that is aware of idmapped mounts will receive the user namespace the mount has been marked with. This can be used for additional permission checking and also to enable filesystems to translate between uids and gids if they need to. We have implemented all relevant helpers in earlier patches. As requested we simply extend the exisiting inode method instead of introducing new ones. This is a little more code churn but it's mostly mechanical and doesnt't leave us with additional inode methods. Link: https://lore.kernel.org/r/20210121131959.646623-25-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'fs/adfs')
-rw-r--r--fs/adfs/adfs.h3
-rw-r--r--fs/adfs/inode.c3
2 files changed, 4 insertions, 2 deletions
diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 699c4fa8b78b..06b7c92343ad 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -144,7 +144,8 @@ struct adfs_discmap {
/* Inode stuff */
struct inode *adfs_iget(struct super_block *sb, struct object_info *obj);
int adfs_write_inode(struct inode *inode, struct writeback_control *wbc);
-int adfs_notify_change(struct dentry *dentry, struct iattr *attr);
+int adfs_notify_change(struct user_namespace *mnt_userns, struct dentry *dentry,
+ struct iattr *attr);
/* map.c */
int adfs_map_lookup(struct super_block *sb, u32 frag_id, unsigned int offset);
diff --git a/fs/adfs/inode.c b/fs/adfs/inode.c
index 278dcee6ae22..fb7ee026d101 100644
--- a/fs/adfs/inode.c
+++ b/fs/adfs/inode.c
@@ -292,7 +292,8 @@ out:
* later.
*/
int
-adfs_notify_change(struct dentry *dentry, struct iattr *attr)
+adfs_notify_change(struct user_namespace *mnt_userns, struct dentry *dentry,
+ struct iattr *attr)
{
struct inode *inode = d_inode(dentry);
struct super_block *sb = inode->i_sb;