CRED: Wrap task credential accesses in the OCFS2 filesystem

Wrap access to task credentials so that they can be separated more easily from
the task_struct during the introduction of COW creds.

Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().

Change some task->e?[ug]id to task_e?[ug]id().  In some places it makes more
sense to use RCU directly rather than a convenient wrapper; these will be
addressed by later patches.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <joel.becker@oracle.com>
Cc: ocfs2-devel@oss.oracle.com
Signed-off-by: James Morris <jmorris@namei.org>

diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlm/dlmfs.c
index 533a789..3516d8a 100644 (file)
--- a/fs/ocfs2/dlm/dlmfs.c
+++ b/fs/ocfs2/dlm/dlmfs.c
@@ -339,8 +339,8 @@ static struct inode *dlmfs_get_root_inode(struct super_block *sb)
                ip = DLMFS_I(inode);
 
                inode->i_mode = mode;
-               inode->i_uid = current->fsuid;
-               inode->i_gid = current->fsgid;
+               inode->i_uid = current_fsuid();
+               inode->i_gid = current_fsgid();
                inode->i_blocks = 0;
                inode->i_mapping->backing_dev_info = &dlmfs_backing_dev_info;
                inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
@@ -365,8 +365,8 @@ static struct inode *dlmfs_get_inode(struct inode *parent,
                return NULL;
 
        inode->i_mode = mode;
-       inode->i_uid = current->fsuid;
-       inode->i_gid = current->fsgid;
+       inode->i_uid = current_fsuid();
+       inode->i_gid = current_fsgid();
        inode->i_blocks = 0;
        inode->i_mapping->backing_dev_info = &dlmfs_backing_dev_info;
        inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;

diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 485a6aa..f95f365 100644 (file)
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -421,13 +421,13 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
        fe->i_blkno = cpu_to_le64(fe_blkno);
        fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
        fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
-       fe->i_uid = cpu_to_le32(current->fsuid);
+       fe->i_uid = cpu_to_le32(current_fsuid());
        if (dir->i_mode & S_ISGID) {
                fe->i_gid = cpu_to_le32(dir->i_gid);
                if (S_ISDIR(mode))
                        mode |= S_ISGID;
        } else
-               fe->i_gid = cpu_to_le32(current->fsgid);
+               fe->i_gid = cpu_to_le32(current_fsgid());
        fe->i_mode = cpu_to_le16(mode);
        if (S_ISCHR(mode) || S_ISBLK(mode))
                fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));