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 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/types.h> 29 #include <sys/param.h> 30 #include <sys/stat.h> 31 #include <sys/statvfs.h> 32 #include <sys/sysmacros.h> 33 #include <libintl.h> 34 #include <string.h> 35 #include <stdlib.h> 36 #include <stdarg.h> 37 #include <stdio.h> 38 #include <errno.h> 39 #include <dlfcn.h> 40 #include <link.h> 41 42 #include "utils.h" 43 44 static void *lib_hdl = NULL; 45 46 static const char PNAME_FMT[] = "%s: "; 47 static const char ERRNO_FMT[] = ": %s\n"; 48 49 static const char *pname; 50 51 /*PRINTFLIKE1*/ 52 static void 53 warn(const char *format, ...) 54 { 55 int err = errno; 56 va_list alist; 57 58 if (pname != NULL) 59 (void) fprintf(stderr, gettext(PNAME_FMT), pname); 60 61 va_start(alist, format); 62 (void) vfprintf(stderr, format, alist); 63 va_end(alist); 64 65 if (strchr(format, '\n') == NULL) 66 (void) fprintf(stderr, gettext(ERRNO_FMT), strerror(err)); 67 } 68 69 /*PRINTFLIKE1*/ 70 void 71 die(const char *format, ...) 72 { 73 int err = errno; 74 va_list alist; 75 76 if (pname != NULL) 77 (void) fprintf(stderr, gettext(PNAME_FMT), pname); 78 79 va_start(alist, format); 80 (void) vfprintf(stderr, format, alist); 81 va_end(alist); 82 83 if (strchr(format, '\n') == NULL) 84 (void) fprintf(stderr, gettext(ERRNO_FMT), strerror(err)); 85 86 exit(E_ERROR); 87 } 88 89 const char * 90 getpname(const char *arg0) 91 { 92 const char *p = strrchr(arg0, '/'); 93 94 if (p == NULL) 95 p = arg0; 96 else 97 p++; 98 99 pname = p; 100 return (p); 101 } 102 103 int 104 valid_abspath(const char *p) 105 { 106 if (p[0] != '/') { 107 warn(gettext("pathname is not an absolute path -- %s\n"), p); 108 return (0); 109 } 110 111 if (strlen(p) > MAXPATHLEN) { 112 warn(gettext("pathname is too long -- %s\n"), p); 113 return (0); 114 } 115 116 return (1); 117 } 118 119 /* 120 * Wrapper for dlopen'ing a library. 121 * The caller must call closelib() once 122 * access to the library is no longer needed. 123 */ 124 void * 125 openlib(const char *lib) 126 { 127 lib_hdl = dlopen(lib, RTLD_LAZY); 128 return (lib_hdl); 129 } 130 131 void 132 closelib() 133 { 134 if (lib_hdl != NULL) 135 (void) dlclose(lib_hdl); 136 } 137