1 // SPDX-License-Identifier: GPL-2.0
4  * Portions Copyright (C) 2000-2008 Silicon Graphics, Inc.
24  * Get permission to use log-assisted atomic exchange of file extents.
40 	xlog_use_incompat_feat(mp->m_log);  in xfs_attr_grab_log_assist()
43 	 * If log-assisted xattrs are already enabled, the caller can use the  in xfs_attr_grab_log_assist()
44 	 * log assisted swap functions with the log-incompat reference we got.  in xfs_attr_grab_log_assist()
46 	if (xfs_sb_version_haslogxattrs(&mp->m_sb))  in xfs_attr_grab_log_assist()
56 		error = -EOPNOTSUPP;  in xfs_attr_grab_log_assist()
60 	/* Enable log-assisted xattrs. */  in xfs_attr_grab_log_assist()
71 	xlog_drop_incompat_feat(mp->m_log);  in xfs_attr_grab_log_assist()
79 	xlog_drop_incompat_feat(mp->m_log);  in xfs_attr_rele_log_assist()
102 	struct xfs_mount	*mp = args->dp->i_mount;  in xfs_attr_change()
106 	ASSERT(!(args->op_flags & XFS_DA_OP_LOGGED));  in xfs_attr_change()
113 		args->op_flags |= XFS_DA_OP_LOGGED;  in xfs_attr_change()
127 		struct inode *inode, const char *name, void *value, size_t size)  in xfs_xattr_get()  argument
131 		.attr_filter	= handler->flags,  in xfs_xattr_get()
132 		.name		= name,  in xfs_xattr_get()
133 		.namelen	= strlen(name),  in xfs_xattr_get()
140 		return -EIO;  in xfs_xattr_get()
151 	      struct inode *inode, const char *name, const void *value,  in xfs_xattr_set()  argument
156 		.attr_filter	= handler->flags,  in xfs_xattr_set()
158 		.name		= name,  in xfs_xattr_set()
159 		.namelen	= strlen(name),  in xfs_xattr_set()
166 	if (!error && (handler->flags & XFS_ATTR_ROOT))  in xfs_xattr_set()
167 		xfs_forget_acl(inode, name);  in xfs_xattr_set()
172 	.prefix	= XATTR_USER_PREFIX,
179 	.prefix	= XATTR_TRUSTED_PREFIX,
186 	.prefix	= XATTR_SECURITY_PREFIX,
202 	char *prefix,  in __xfs_xattr_put_listent()  argument
204 	unsigned char *name,  in __xfs_xattr_put_listent()  argument
210 	if (context->count < 0 || context->seen_enough)  in __xfs_xattr_put_listent()
213 	if (!context->buffer)  in __xfs_xattr_put_listent()
216 	arraytop = context->count + prefix_len + namelen + 1;  in __xfs_xattr_put_listent()
217 	if (arraytop > context->firstu) {  in __xfs_xattr_put_listent()
218 		context->count = -1;	/* insufficient space */  in __xfs_xattr_put_listent()
219 		context->seen_enough = 1;  in __xfs_xattr_put_listent()
222 	offset = context->buffer + context->count;  in __xfs_xattr_put_listent()
223 	memcpy(offset, prefix, prefix_len);  in __xfs_xattr_put_listent()
225 	strncpy(offset, (char *)name, namelen);			/* real name */  in __xfs_xattr_put_listent()
230 	context->count += prefix_len + namelen + 1;  in __xfs_xattr_put_listent()
238 	unsigned char	*name,  in xfs_xattr_put_listent()  argument
242 	char *prefix;  in xfs_xattr_put_listent()  local
245 	ASSERT(context->count >= 0);  in xfs_xattr_put_listent()
250 		    strncmp(name, SGI_ACL_FILE,  in xfs_xattr_put_listent()
258 			 strncmp(name, SGI_ACL_DEFAULT,  in xfs_xattr_put_listent()
275 		prefix = XATTR_TRUSTED_PREFIX;  in xfs_xattr_put_listent()
278 		prefix = XATTR_SECURITY_PREFIX;  in xfs_xattr_put_listent()
281 		prefix = XATTR_USER_PREFIX;  in xfs_xattr_put_listent()
285 	__xfs_xattr_put_listent(context, prefix, prefix_len, name,  in xfs_xattr_put_listent()
301 		return -EIO;  in xfs_vn_listxattr()
304 	 * First read the regular on-disk attributes.  in xfs_vn_listxattr()
318 		return -ERANGE;  in xfs_vn_listxattr()