1 // SPDX-License-Identifier: GPL-2.0
4  * Portions Copyright (C) 2000-2008 Silicon Graphics, Inc.
25  * Get permission to use log-assisted atomic exchange of file extents.
45 		return -EOPNOTSUPP;  in xfs_attr_grab_log_assist()
47 	/* Enable log-assisted xattrs. */  in xfs_attr_grab_log_assist()
74  * initialize the inode, attr_filter, name, namelen, value, and valuelen fields
82 	struct xfs_mount	*mp = args->dp->i_mount;  in xfs_attr_change()
86 		return -EIO;  in xfs_attr_change()
88 	error = xfs_qm_dqattach(args->dp);  in xfs_attr_change()
94 	 * to remove, so we have to allow the name lookup prior to attribute  in xfs_attr_change()
97 	args->op_flags = XFS_DA_OP_OKNOENT;  in xfs_attr_change()
104 		args->op_flags |= XFS_DA_OP_LOGGED;  in xfs_attr_change()
107 	args->owner = args->dp->i_ino;  in xfs_attr_change()
108 	args->geo = mp->m_attr_geo;  in xfs_attr_change()
109 	args->whichfork = XFS_ATTR_FORK;  in xfs_attr_change()
119 	 * namespaces translate to the XFS_ATTR_ROOT and XFS_ATTR_SECURE on-disk  in xfs_attr_change()
129 			args->attr_filter & (XFS_ATTR_ROOT | XFS_ATTR_SECURE));  in xfs_attr_change()
135 		struct inode *inode, const char *name, void *value, size_t size)  in xfs_xattr_get()  argument
139 		.attr_filter	= handler->flags,  in xfs_xattr_get()
140 		.name		= name,  in xfs_xattr_get()
141 		.namelen	= strlen(name),  in xfs_xattr_get()
148 		return -EIO;  in xfs_xattr_get()
173 	      struct inode *inode, const char *name, const void *value,  in xfs_xattr_set()  argument
178 		.attr_filter	= handler->flags,  in xfs_xattr_set()
179 		.name		= name,  in xfs_xattr_set()
180 		.namelen	= strlen(name),  in xfs_xattr_set()
187 	if (!error && (handler->flags & XFS_ATTR_ROOT))  in xfs_xattr_set()
188 		xfs_forget_acl(inode, name);  in xfs_xattr_set()
193 	.prefix	= XATTR_USER_PREFIX,
200 	.prefix	= XATTR_TRUSTED_PREFIX,
207 	.prefix	= XATTR_SECURITY_PREFIX,
223 	char *prefix,  in __xfs_xattr_put_listent()  argument
225 	unsigned char *name,  in __xfs_xattr_put_listent()  argument
231 	if (context->count < 0 || context->seen_enough)  in __xfs_xattr_put_listent()
234 	if (!context->buffer)  in __xfs_xattr_put_listent()
237 	arraytop = context->count + prefix_len + namelen + 1;  in __xfs_xattr_put_listent()
238 	if (arraytop > context->firstu) {  in __xfs_xattr_put_listent()
239 		context->count = -1;	/* insufficient space */  in __xfs_xattr_put_listent()
240 		context->seen_enough = 1;  in __xfs_xattr_put_listent()
243 	offset = context->buffer + context->count;  in __xfs_xattr_put_listent()
244 	memcpy(offset, prefix, prefix_len);  in __xfs_xattr_put_listent()
246 	strncpy(offset, (char *)name, namelen);			/* real name */  in __xfs_xattr_put_listent()
251 	context->count += prefix_len + namelen + 1;  in __xfs_xattr_put_listent()
259 	unsigned char	*name,  in xfs_xattr_put_listent()  argument
264 	char *prefix;  in xfs_xattr_put_listent()  local
267 	ASSERT(context->count >= 0);  in xfs_xattr_put_listent()
276 		    strncmp(name, SGI_ACL_FILE,  in xfs_xattr_put_listent()
284 			 strncmp(name, SGI_ACL_DEFAULT,  in xfs_xattr_put_listent()
301 		prefix = XATTR_TRUSTED_PREFIX;  in xfs_xattr_put_listent()
304 		prefix = XATTR_SECURITY_PREFIX;  in xfs_xattr_put_listent()
307 		prefix = XATTR_USER_PREFIX;  in xfs_xattr_put_listent()
311 	__xfs_xattr_put_listent(context, prefix, prefix_len, name,  in xfs_xattr_put_listent()
327 		return -EIO;  in xfs_vn_listxattr()
330 	 * First read the regular on-disk attributes.  in xfs_vn_listxattr()
344 		return -ERANGE;  in xfs_vn_listxattr()