New -as mkisofs option --xattr-any

xorriso/xorrisofs.1

@@ -9,7 +9,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISOFS 1 "Version 1.4.9, Sep 16, 2017"
+.TH XORRISOFS 1 "Version 1.4.9, Oct 10, 2017"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -630,9 +630,19 @@ This option has no effect if option \-D is present.
 Alias of \-rr_reloc_dir "/.rr_moved"
 .TP
 \fB--for_backup\fR
-Enable options which improve backup fidelity:
-\-\-acl, \-\-xattr, \-\-md5,
+Enable all options which improve backup fidelity:
+.br
+\-\-acl, \-\-xattr\-any, \-\-md5,
 \-\-hardlinks. 
+.br
+If you later restore a backup with xattr from non\-user namespaces, then make
+sure that the target operating system and filesystem know what these attributes
+mean. Possibly you will need administrator privileges to record or restore
+such attributes. At recording time, xorriso will try to tolerate missing
+privileges and just record what is readable.
+.br
+Option \-xattr after option \-for_backup excludes non\-user attributes
+from being recorded.
 .TP
 \fB--acl\fR
 .br
@@ -649,6 +659,12 @@ man getextattr and man 9 extattr, respectively).
 They will not be in effect with mounted ISO images. But xorriso can
 restore them on the same systems when extracting files from the ISO image.
 .TP
+\fB--xattr-any\fR
+.br
+Enable recording and loading of GNU/Linux or FreeBSD extended attributes in
+all namespaces. This might need adminstrator privileges, even if the owner
+of the disk file tries to read the attributes.
+.TP
 \fB--md5\fR
 .br
 Enable recording of MD5 checksums for the overall ISO image and for each