ph_change(3) C Library Calls ph_change(3)NAME
ph_change, ph_add, ph_delete - modify data on PH server
SYNOPSIS
#include <phclient.h>
int ph_change(PH *ph, struct ph_fieldselector query[], struct ph_field‐
selector change[], int flags);
int ph_add(PH *ph, struct ph_fieldselector fields[]);
int ph_delete(PH *ph, struct ph_fieldselector query[]);
VERSION
This man page documents version 1.2 of libphclient.
DESCRIPTION
The ph_change() function changes data on the PH server associated with
the PH handle ph. The query argument selects which entries will be
changed in the same manner as for the ph_query() function. The change
argument is an array of changes to make on the server. Each element of
the array is a structure with three fields: field (the name of the
field to modify encoded as a string), operation (a character value
which must be set to '='), and value (a string value to set the field
to). The last element in the array must be set to all zeros. If the
flags argument is set to PH_CHANGE_FORCE, the "force" clause is used
instead of the "make" clause when sending the change command to the
server.
The ph_add() function adds a new PH entry whose contents are specified
in fields. This data is encoded just as the change argument to
ph_change() above.
The ph_delete() function deletes entries from the PH server. The query
argument selects which entries will be deleted in the same manner as
for the ph_query() function.
RETURN VALUE
On success, the ph_change() and ph_delete() functions return the number
of entries changed or deleted, or PH_ERR_DATAERR if the supplied field
data is invalid.
All of the functions described here return PH_ERR_NOTLOG if no user is
logged in, and PH_ERR_READONLY if the server is in read-only mode. On
error, they return -1 and set errno.
ERRORS
The functions describe here will fail with EINVAL if they receive an
unexpected response code from the server. In addition, they may fail
with any error from the functions read() or write().
SEE ALSOread(2), write(2), ph_query(3), ph_open(3)University of Illinois Oct 2002 ph_change(3)
