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 2006 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 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <stdio.h> 33 #include <unistd.h> 34 #include <errno.h> 35 #include <string.h> 36 #include <dlfcn.h> 37 #include <papi_impl.h> 38 39 #ifndef RTLD_GROUP 40 #define RTLD_GROUP 0 41 #endif /* RTLD_GROUP */ 42 43 #ifndef PSM_DIR 44 #define PSM_DIR "/usr/lib/print" 45 #endif 46 47 papi_status_t 48 psm_open(service_t *svc, char *scheme) 49 { 50 papi_status_t result = PAPI_OK; 51 char *path; 52 char buf[BUFSIZ]; 53 54 if (scheme == NULL) 55 return (PAPI_BAD_ARGUMENT); 56 57 if (strchr(scheme, '/') == NULL) { 58 snprintf(buf, sizeof (buf), PSM_DIR "/psm-%s.so", scheme); 59 path = buf; 60 } else 61 path = scheme; 62 63 svc->so_handle = dlopen(path, RTLD_LAZY|RTLD_LOCAL|RTLD_GROUP); 64 if (svc->so_handle == NULL) { /* failed, set the result/message */ 65 if ((access(path, F_OK) < 0) && (errno == ENOENT)) 66 result = PAPI_URI_SCHEME; 67 else 68 result = PAPI_NOT_POSSIBLE; 69 #ifdef DEBUG 70 detailed_error(svc, "psm_open(%s): %s: %s", scheme, path, 71 dlerror()); 72 #endif 73 } 74 75 return (result); 76 } 77 78 void 79 psm_close(void *handle) 80 { 81 dlclose(handle); 82 } 83 84 void * 85 psm_sym(service_t *svc, char *name) 86 { 87 char *error = "invalid input"; 88 void *func = NULL; 89 90 if ((svc != NULL) && (svc->so_handle != NULL) && (name != NULL)) { 91 if ((func = dlsym(svc->so_handle, name)) == NULL) 92 error = dlerror(); 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