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
35 static size_t
projlist(id_t * idbuf,size_t idbufsz)36 projlist(id_t *idbuf, size_t idbufsz)
37 {
38 return (syscall(SYS_tasksys, 3, 0, 0, idbuf, idbufsz));
39 }
40
41 int
project_walk(int (* callback)(projid_t,void *),void * init_data)42 project_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