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 2006 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 /* 29 * Utility functions 30 */ 31 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <libelf.h> 36 #include <gelf.h> 37 #include <errno.h> 38 #include <stdarg.h> 39 #include <pthread.h> 40 #include <unistd.h> 41 #include <sys/param.h> 42 43 #include "ctftools.h" 44 #include "memory.h" 45 46 static void (*terminate_cleanup)() = NULL; 47 48 /* returns 1 if s1 == s2, 0 otherwise */ 49 int 50 streq(char *s1, char *s2) 51 { 52 if (s1 == NULL) { 53 if (s2 != NULL) 54 return (0); 55 } else if (s2 == NULL) 56 return (0); 57 else if (strcmp(s1, s2) != 0) 58 return (0); 59 60 return (1); 61 } 62 63 int 64 findelfsecidx(Elf *elf, const char *file, const char *tofind) 65 { 66 Elf_Scn *scn = NULL; 67 GElf_Ehdr ehdr; 68 GElf_Shdr shdr; 69 70 if (gelf_getehdr(elf, &ehdr) == NULL) 71 elfterminate(file, "Couldn't read ehdr"); 72 73 while ((scn = elf_nextscn(elf, scn)) != NULL) { 74 char *name; 75 76 if (gelf_getshdr(scn, &shdr) == NULL) { 77 elfterminate(file, 78 "Couldn't read header for section %d", 79 elf_ndxscn(scn)); 80 } 81 82 if ((name = elf_strptr(elf, ehdr.e_shstrndx, 83 (size_t)shdr.sh_name)) == NULL) { 84 elfterminate(file, 85 "Couldn't get name for section %d", 86 elf_ndxscn(scn)); 87 } 88 89 if (strcmp(name, tofind) == 0) 90 return (elf_ndxscn(scn)); 91 } 92 93 return (-1); 94 } 95 96 /*PRINTFLIKE2*/ 97 static void 98 whine(char *type, char *format, va_list ap) 99 { 100 int error = errno; 101 102 fprintf(stderr, "%s: %s: ", type, progname); 103 vfprintf(stderr, format, ap); 104 105 if (format[strlen(format) - 1] != '\n') 106 fprintf(stderr, ": %s\n", strerror(error)); 107 } 108 109 void 110 set_terminate_cleanup(void (*cleanup)()) 111 { 112 terminate_cleanup = cleanup; 113 } 114 115 /*PRINTFLIKE1*/ 116 void 117 terminate(char *format, ...) 118 { 119 va_list ap; 120 121 va_start(ap, format); 122 whine("ERROR", format, ap); 123 va_end(ap); 124 125 if (terminate_cleanup) 126 terminate_cleanup(); 127 128 if (getenv("CTF_ABORT_ON_TERMINATE") != NULL) 129 abort(); 130 exit(1); 131 } 132 133 /*PRINTFLIKE1*/ 134 void 135 aborterr(char *format, ...) 136 { 137 va_list ap; 138 139 va_start(ap, format); 140 whine("ERROR", format, ap); 141 va_end(ap); 142 143 abort(); 144 } 145 146 /*PRINTFLIKE1*/ 147 void 148 warning(char *format, ...) 149 { 150 va_list ap; 151 152 va_start(ap, format); 153 whine("WARNING", format, ap); 154 va_end(ap); 155 156 if (debug_level >= 3) 157 terminate("Termination due to warning\n"); 158 } 159 160 /*PRINTFLIKE2*/ 161 void 162 vadebug(int level, char *format, va_list ap) 163 { 164 if (level > debug_level) 165 return; 166 167 (void) fprintf(DEBUG_STREAM, "DEBUG: "); 168 (void) vfprintf(DEBUG_STREAM, format, ap); 169 fflush(DEBUG_STREAM); 170 } 171 172 /*PRINTFLIKE2*/ 173 void 174 debug(int level, char *format, ...) 175 { 176 va_list ap; 177 178 if (level > debug_level) 179 return; 180 181 va_start(ap, format); 182 (void) vadebug(level, format, ap); 183 va_end(ap); 184 } 185 186 char * 187 mktmpname(const char *origname, const char *suffix) 188 { 189 char *newname; 190 191 newname = xmalloc(strlen(origname) + strlen(suffix) + 1); 192 (void) strcpy(newname, origname); 193 (void) strcat(newname, suffix); 194 return (newname); 195 } 196 197 /*PRINTFLIKE2*/ 198 void 199 elfterminate(const char *file, const char *fmt, ...) 200 { 201 static char msgbuf[BUFSIZ]; 202 va_list ap; 203 204 va_start(ap, fmt); 205 vsnprintf(msgbuf, sizeof (msgbuf), fmt, ap); 206 va_end(ap); 207 208 terminate("%s: %s: %s\n", file, msgbuf, elf_errmsg(-1)); 209 } 210 211 const char * 212 tdesc_name(tdesc_t *tdp) 213 { 214 return (tdp->t_name == NULL ? "(anon)" : tdp->t_name); 215 } 216