Add change record format description

doc/man/man5/ldif.5

@@ -6,13 +6,16 @@
 ldif \- LDAP Data Interchange Format
 .SH DESCRIPTION
 The LDAP Data Interchange Format (LDIF) is used to represent LDAP
-entries in text form. LDAP tools, such as
+entries and change records in text form. LDAP tools, such as
-.BR ldapadd (1)
+.BR ldapadd (1) and .BR ldapsearch (1), read and write LDIF entry
-and
+records.  ldapmodify(1) reads LDIF change records.
-.BR ldapsearch (1),
-read and write LDIF.
 .LP
-The basic form of an LDIF entry is:
+This manual page provides a basic description of LDIF.  A
+formal specification of LDIF is published in RFC 2849.
+.SH ENTRY RECORDS
+.LP
+LDIF entry records are used to represent directory entries.  The basic
+form of an entry record is:
 .LP
 .nf
 .ft tt
@@ -73,7 +76,7 @@ Other URI schemes (ftp,http) may be supported as well.
 .LP
 Multiple entries within the same LDIF file are separated by blank
 lines.
-.SH EXAMPLE
+.SH ENTRY RECORD EXAMPLE
 Here is an example of an LDIF file containing three entries.
 .LP
 .nf
@@ -103,13 +106,134 @@ Here is an example of an LDIF file containing three entries.
 .ft
 .fi
 .LP
-Notice that the description in Barbara Jensen's entry is
+Note that the description in Barbara Jensen's entry is
 read from file:///tmp/babs and the jpegPhoto in Jennifer
 Jensen's entry is encoded using base 64.
+.SH CHANGE RECORDS
+LDIF change records are used to represent directory change requests.
+Each change record starts with line indicating the distinguished
+name of the entry being changed:
+.LP
+.nf
+	dn: <distinguishedname>
+.fi
+.LP
+.nf
+	changetype: <[modify|add|delete|modrdn]>
+.fi
+.LP
+Finally, the change information itself is given, the format of which
+depends on what kind of change was specified above.  For a \fIchangetype\fP
+of \fImodify\fP, the format is one or more of the following:
+.LP
+.nf
+	add: <attributetype>
+	<attrdesc>: <value1>
+	<attrdesc>: <value2>
+	...
+	-
+.fi
+.LP
+Or, for a replace modification:
+.LP
+.nf
+	replace: <attributetype>
+	<attrdesc>: <value1>
+	<attrdesc>: <value2>
+	...
+	-
+.fi
+.LP
+If no \fIattributetype\fP lines are given to replace,
+the entire attribute is to be deleted (if present).
+.LP
+Or, for a delete modification:
+.LP
+.nf
+	delete: <attributetype>
+	<attrdesc>: <value1>
+	<attrdesc>: <value2>
+	...
+	-
+.fi
+.LP
+If no \fIattributetype\fP lines are given to delete,
+the entire attribute is to be deleted.
+.LP
+For a \fIchangetype\fP of \fIadd\fP, the format is:
+.LP
+.nf
+	<attrdesc1>: <value1>
+	<attrdesc1>: <value2>
+	...
+	<attrdescN>: <value1>
+	<attrdescN>: <value2>
+.fi
+.LP
+For a \fIchangetype\fP of \fImodrdn\fP or \fImoddn\fP,
+the format is:
+.LP
+.nf
+	newrdn: <newrdn>
+	deleteoldrdn: 0 | 1
+	newsuperior: <DN>
+.fi
+.LP
+where a value of 1 for deleteoldrdn means to delete the values
+forming the old rdn from the entry, and a value of 0 means to
+leave the values as non-distinguished attributes in the entry.
+The newsuperior line is optional and, if present, specifies the
+new superior to move the entry to.
+.LP
+For a \fIchangetype\fP of \fIdelete\fP, no additional information
+is needed in the record.
+.LP
+Note that attribute values may be presented using base64 or in
+files as described for entry records.  Lines in change records
+may be continued in the manner described for entry records as
+well. 
+.SH CHANGE RECORD EXAMPLE
+The following sample LDIF file contains a change record
+of each type of change.
+.LP
+.nf
+	dn: cn=Babs Jensen,dc=example,dc=com
+	changetype: add
+	objectclass: person
+	objectclass: extensibleObject
+	cn: babs
+	cn: babs jensen
+	sn: jensen
+
+	dn: cn=Babs Jensen,dc=example,dc=com
+	changetype: modify
+	add: givenName
+	givenName: Barbara
+	givenName: babs
+	-
+	replace: description
+	description: the fabulous babs
+	-
+	delete: sn
+	sn: jensen
+	-
+
+	dn: cn=Babs Jensen,dc=example,dc=com
+	changetype: modrdn
+	newrdn: cn=Barbara J Jensen
+	deleteoldrdn: 0
+	newsuperior: ou=People,dc=example,dc=com
+
+	dn: cn=Barbara J Jensen,ou=People,dc=example,dc=com
+	changetype: delete
+.fi
+
 .SH SEE ALSO
 .BR ldap (3),
 .BR ldapsearch (1),
-.BR ldapadd (1).
+.BR ldapadd (1),
+.BR ldapmodify (1),
+.BR slapd.replog (5).
 .LP
 "LDAP Data Interchange Format," Good, G., RFC 2849.
 .SH ACKNOWLEDGEMENTS