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 #include <sys/syscall.h>
28
29 #include <project.h>
30 #include <stdlib.h>
31 #include <errno.h>
32
33 static size_t
projlist(id_t * idbuf,size_t idbufsz)34 projlist(id_t *idbuf, size_t idbufsz)
35 {
36 return (syscall(SYS_tasksys, 3, 0, 0, idbuf, idbufsz));
37 }
38
39 int
project_walk(int (* callback)(projid_t,void *),void * init_data)40 project_walk(int (*callback)(projid_t, void *), void *init_data)
41 {
42 int ret = 0;
43 projid_t *projids = NULL;
44 projid_t *curr_projid;
45 size_t sz;
46 size_t osz = 0;
47
48 while ((sz = projlist(projids, osz * sizeof (projid_t))) != osz) {
49 osz = sz;
50 curr_projid = projids;
51 if ((projids = realloc(projids, sz * sizeof (projid_t)))
52 == NULL) {
53 /*
54 * If realloc() fails, we return ENOMEM.
55 */
56 if (errno == EAGAIN)
57 errno = ENOMEM;
58 if (curr_projid != NULL)
59 free(curr_projid);
60 return (-1);
61 }
62 }
63
64 for (curr_projid = projids; curr_projid < projids + sz; curr_projid++) {
65 if (ret = callback(*curr_projid, init_data))
66 break;
67 }
68
69 free(projids);
70 return (ret);
71 }
72