1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright (c) 2001 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <sys/syscall.h>
30
31#include <project.h>
32#include <stdlib.h>
33#include <errno.h>
34
35static size_t
36projlist(id_t *idbuf, size_t idbufsz)
37{
38	return (syscall(SYS_tasksys, 3, 0, 0, idbuf, idbufsz));
39}
40
41int
42project_walk(int (*callback)(projid_t, void *), void *init_data)
43{
44	int ret = 0;
45	projid_t *projids = NULL;
46	projid_t *curr_projid;
47	size_t sz;
48	size_t osz = 0;
49
50	while ((sz = projlist(projids, osz * sizeof (projid_t))) != osz) {
51		osz = sz;
52		curr_projid = projids;
53		if ((projids = realloc(projids, sz * sizeof (projid_t)))
54		    == NULL) {
55			/*
56			 * If realloc() fails, we return ENOMEM.
57			 */
58			if (errno == EAGAIN)
59				errno = ENOMEM;
60			if (curr_projid != NULL)
61				free(curr_projid);
62			return (-1);
63		}
64	}
65
66	for (curr_projid = projids; curr_projid < projids + sz; curr_projid++) {
67		if (ret = callback(*curr_projid, init_data))
68			break;
69	}
70
71	free(projids);
72	return (ret);
73}
74