/* * Set the access or default ACL of an inode. * * inode->i_mutex: down unless called from ext4_new_inode */ static int ext4_set_acl(handle_t *handle, struct inode *inode, int type, struct posix_acl *acl) { int name_index; void *value = NULL; size_t size = 0; int error; if (S_ISLNK(inode->i_mode)) return -EOPNOTSUPP; switch (type) { case ACL_TYPE_ACCESS: name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS; if (acl) { mode_t mode = inode->i_mode; error = posix_acl_equiv_mode(acl, &mode); if (error < 0) return error; else { inode->i_mode = mode; ext4_mark_inode_dirty(handle, inode); if (error == 0) acl = NULL; } } break; case ACL_TYPE_DEFAULT: name_index = EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT; if (!S_ISDIR(inode->i_mode)) return acl ? -EACCES : 0; break; default: return -EINVAL; } if (acl) { value = ext4_acl_to_disk(acl, &size); if (IS_ERR(value)) return (int)PTR_ERR(value); } error = ext4_xattr_set_handle(handle, inode, name_index, "", value, size, 0); kfree(value); if (!error) set_cached_acl(inode, type, acl); return error; }
/* * Set the access or default ACL of an inode. * * inode->i_mutex: down unless called from ext4_new_inode */ static int __ext4_set_acl(handle_t *handle, struct inode *inode, int type, struct posix_acl *acl) { int name_index; void *value = NULL; size_t size = 0; int error; switch (type) { case ACL_TYPE_ACCESS: name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS; if (acl) { error = posix_acl_update_mode(inode, &inode->i_mode, &acl); if (error) return error; inode->i_ctime = ext4_current_time(inode); ext4_mark_inode_dirty(handle, inode); } break; case ACL_TYPE_DEFAULT: name_index = EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT; if (!S_ISDIR(inode->i_mode)) return acl ? -EACCES : 0; break; default: return -EINVAL; } if (acl) { value = ext4_acl_to_disk(acl, &size); if (IS_ERR(value)) return (int)PTR_ERR(value); } error = ext4_xattr_set_handle(handle, inode, name_index, "", value, size, 0); kfree(value); if (!error) set_cached_acl(inode, type, acl); return error; }