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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 *
26 */
27
28 /* $Id: psm.c 146 2006-03-24 00:26:54Z njacobs $ */
29
30 #include <stdio.h>
31 #include <unistd.h>
32 #include <errno.h>
33 #include <string.h>
34 #include <dlfcn.h>
35 #include <papi_impl.h>
36
37 #ifndef RTLD_GROUP
38 #define RTLD_GROUP 0
39 #endif /* RTLD_GROUP */
40
41 #ifndef PSM_DIR
42 #define PSM_DIR "/usr/lib/print"
43 #endif
44
45 papi_status_t
psm_open(service_t * svc,char * scheme)46 psm_open(service_t *svc, char *scheme)
47 {
48 papi_status_t result = PAPI_OK;
49 char path[BUFSIZ];
50
51 if ((scheme == NULL) || (strchr(scheme, '/') != NULL))
52 return (PAPI_BAD_ARGUMENT);
53
54 snprintf(path, sizeof (path), PSM_DIR "/psm-%s.so", scheme);
55
56 svc->so_handle = dlopen(path, RTLD_LAZY|RTLD_LOCAL|RTLD_GROUP);
57 if (svc->so_handle == NULL) { /* failed, set the result/message */
58 if ((access(path, F_OK) < 0) && (errno == ENOENT))
59 result = PAPI_URI_SCHEME;
60 else
61 result = PAPI_NOT_POSSIBLE;
62 #ifdef DEBUG
63 detailed_error(svc, "psm_open(%s): %s: %s", scheme, path,
64 dlerror());
65 #endif
66 }
67
68 return (result);
69 }
70
71 void
psm_close(void * handle)72 psm_close(void *handle)
73 {
74 dlclose(handle);
75 }
76
77 void *
psm_sym(service_t * svc,char * name)78 psm_sym(service_t *svc, char *name)
79 {
80 #ifdef DEBUG
81 char *error = "invalid input";
82 #endif
83 void *func = NULL;
84
85 if ((svc != NULL) && (svc->so_handle != NULL) && (name != NULL)) {
86 if ((func = dlsym(svc->so_handle, name)) == NULL) {
87 #ifdef DEBUG
88 error = dlerror();
89 #else
90 return (func);
91 #endif
92 }
93 }
94 #ifdef DEBUG
95 if (func == NULL)
96 detailed_error(svc, "psm_sym(%s): %s", name, error);
97 #endif
98
99 return (func);
100 }
101