project_walk.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2001 by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/syscall.h>
#include <project.h>
#include <stdlib.h>
#include <errno.h>
static size_t
projlist(id_t *idbuf, size_t idbufsz)
{
return (syscall(SYS_tasksys, 3, 0, 0, idbuf, idbufsz));
}
int
project_walk(int (*callback)(projid_t, void *), void *init_data)
{
int ret = 0;
projid_t *projids = NULL;
projid_t *curr_projid;
size_t sz;
size_t osz = 0;
while ((sz = projlist(projids, osz * sizeof (projid_t))) != osz) {
osz = sz;
curr_projid = projids;
if ((projids = realloc(projids, sz * sizeof (projid_t)))
== NULL) {
/*
* If realloc() fails, we return ENOMEM.
*/
if (errno == EAGAIN)
errno = ENOMEM;
if (curr_projid != NULL)
free(curr_projid);
return (-1);
}
}
for (curr_projid = projids; curr_projid < projids + sz; curr_projid++) {
if (ret = callback(*curr_projid, init_data))
break;
}
free(projids);
return (ret);
}