hfsplus: use generic posix ACL infrastructure

[~andy/linux] / fs / hfsplus / posix_acl.c

diff --git a/fs/hfsplus/posix_acl.c b/fs/hfsplus/posix_acl.c
index 277942f36f80674f6e8d9f9073ef6e37c832f058..df0c9af68d05ef0df5a127d53562677bc8a2d882 100644 (file)
--- a/fs/hfsplus/posix_acl.c
+++ b/fs/hfsplus/posix_acl.c
@@ -17,9 +17,7 @@ struct posix_acl *hfsplus_get_posix_acl(struct inode *inode, int type)
        char *value = NULL;
        ssize_t size;
 
-       acl = get_cached_acl(inode, type);
-       if (acl != ACL_NOT_CACHED)
-               return acl;
+       hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino);
 
        switch (type) {
        case ACL_TYPE_ACCESS:
@@ -56,17 +54,15 @@ struct posix_acl *hfsplus_get_posix_acl(struct inode *inode, int type)
        return acl;
 }
 
-static int hfsplus_set_posix_acl(struct inode *inode,
-                                       int type,
-                                       struct posix_acl *acl)
+int hfsplus_set_posix_acl(struct inode *inode, struct posix_acl *acl,
+               int type)
 {
        int err;
        char *xattr_name;
        size_t size = 0;
        char *value = NULL;
 
-       if (S_ISLNK(inode->i_mode))
-               return -EOPNOTSUPP;
+       hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino);
 
        switch (type) {
        case ACL_TYPE_ACCESS:
@@ -115,7 +111,7 @@ end_set_acl:
 int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir)
 {
        int err = 0;
-       struct posix_acl *acl = NULL;
+       struct posix_acl *default_acl, *acl;
 
        hfs_dbg(ACL_MOD,
                "[%s]: ino %lu, dir->ino %lu\n",
@@ -124,151 +120,21 @@ int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir)
        if (S_ISLNK(inode->i_mode))
                return 0;
 
-       acl = hfsplus_get_posix_acl(dir, ACL_TYPE_DEFAULT);
-       if (IS_ERR(acl))
-               return PTR_ERR(acl);
-
-       if (acl) {
-               if (S_ISDIR(inode->i_mode)) {
-                       err = hfsplus_set_posix_acl(inode,
-                                                       ACL_TYPE_DEFAULT,
-                                                       acl);
-                       if (unlikely(err))
-                               goto init_acl_cleanup;
-               }
-
-               err = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode);
-               if (unlikely(err < 0))
-                       return err;
-
-               if (err > 0)
-                       err = hfsplus_set_posix_acl(inode,
-                                                       ACL_TYPE_ACCESS,
-                                                       acl);
-       } else
-               inode->i_mode &= ~current_umask();
-
-init_acl_cleanup:
-       posix_acl_release(acl);
-       return err;
-}
-
-int hfsplus_posix_acl_chmod(struct inode *inode)
-{
-       int err;
-       struct posix_acl *acl;
-
-       hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino);
-
-       if (S_ISLNK(inode->i_mode))
-               return -EOPNOTSUPP;
-
-       acl = hfsplus_get_posix_acl(inode, ACL_TYPE_ACCESS);
-       if (IS_ERR(acl) || !acl)
-               return PTR_ERR(acl);
-
-       err = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
-       if (unlikely(err))
+       err = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl);
+       if (err)
                return err;
 
-       err = hfsplus_set_posix_acl(inode, ACL_TYPE_ACCESS, acl);
-       posix_acl_release(acl);
-       return err;
-}
-
-static int hfsplus_xattr_get_posix_acl(struct dentry *dentry,
-                                       const char *name,
-                                       void *buffer,
-                                       size_t size,
-                                       int type)
-{
-       int err = 0;
-       struct posix_acl *acl;
-
-       hfs_dbg(ACL_MOD,
-               "[%s]: ino %lu, buffer %p, size %zu, type %#x\n",
-               __func__, dentry->d_inode->i_ino, buffer, size, type);
-
-       if (strcmp(name, "") != 0)
-               return -EINVAL;
-
-       acl = hfsplus_get_posix_acl(dentry->d_inode, type);
-       if (IS_ERR(acl))
-               return PTR_ERR(acl);
-       if (acl == NULL)
-               return -ENODATA;
-
-       err = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
-       posix_acl_release(acl);
-
-       return err;
-}
-
-static int hfsplus_xattr_set_posix_acl(struct dentry *dentry,
-                                       const char *name,
-                                       const void *value,
-                                       size_t size,
-                                       int flags,
-                                       int type)
-{
-       int err = 0;
-       struct inode *inode = dentry->d_inode;
-       struct posix_acl *acl = NULL;
-
-       hfs_dbg(ACL_MOD,
-               "[%s]: ino %lu, value %p, size %zu, flags %#x, type %#x\n",
-               __func__, inode->i_ino, value, size, flags, type);
-
-       if (strcmp(name, "") != 0)
-               return -EINVAL;
-
-       if (!inode_owner_or_capable(inode))
-               return -EPERM;
-
-       if (value) {
-               acl = posix_acl_from_xattr(&init_user_ns, value, size);
-               if (IS_ERR(acl))
-                       return PTR_ERR(acl);
-               else if (acl) {
-                       err = posix_acl_valid(acl);
-                       if (err)
-                               goto end_xattr_set_acl;
-               }
+       if (default_acl) {
+               err = hfsplus_set_posix_acl(inode, default_acl,
+                                           ACL_TYPE_DEFAULT);
+               posix_acl_release(default_acl);
        }
 
-       err = hfsplus_set_posix_acl(inode, type, acl);
-
-end_xattr_set_acl:
-       posix_acl_release(acl);
+       if (acl) {
+               if (!err)
+                       err = hfsplus_set_posix_acl(inode, acl,
+                                                   ACL_TYPE_ACCESS);
+               posix_acl_release(acl);
+       }
        return err;
 }
-
-static size_t hfsplus_xattr_list_posix_acl(struct dentry *dentry,
-                                               char *list,
-                                               size_t list_size,
-                                               const char *name,
-                                               size_t name_len,
-                                               int type)
-{
-       /*
-        * This method is not used.
-        * It is used hfsplus_listxattr() instead of generic_listxattr().
-        */
-       return -EOPNOTSUPP;
-}
-
-const struct xattr_handler hfsplus_xattr_acl_access_handler = {
-       .prefix = POSIX_ACL_XATTR_ACCESS,
-       .flags  = ACL_TYPE_ACCESS,
-       .list   = hfsplus_xattr_list_posix_acl,
-       .get    = hfsplus_xattr_get_posix_acl,
-       .set    = hfsplus_xattr_set_posix_acl,
-};
-
-const struct xattr_handler hfsplus_xattr_acl_default_handler = {
-       .prefix = POSIX_ACL_XATTR_DEFAULT,
-       .flags  = ACL_TYPE_DEFAULT,
-       .list   = hfsplus_xattr_list_posix_acl,
-       .get    = hfsplus_xattr_get_posix_acl,
-       .set    = hfsplus_xattr_set_posix_acl,
-};