1ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 2ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--------------------------------------------------------------------*/ 3ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--- Launching valgrind m_launcher.c ---*/ 4ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/*--------------------------------------------------------------------*/ 5ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 6ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* 7ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown This file is part of Valgrind, a dynamic binary instrumentation 8ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown framework. 9ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 10436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov Copyright (C) 2000-2013 Julian Seward 11ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown jseward@acm.org 12ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 13ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown This program is free software; you can redistribute it and/or 14ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown modify it under the terms of the GNU General Public License as 15ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown published by the Free Software Foundation; either version 2 of the 16ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown License, or (at your option) any later version. 17ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 18ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown This program is distributed in the hope that it will be useful, but 19ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown WITHOUT ANY WARRANTY; without even the implied warranty of 20ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown General Public License for more details. 22ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 23ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown You should have received a copy of the GNU General Public License 24ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown along with this program; if not, write to the Free Software 25ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 26ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 02111-1307, USA. 27ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 28ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown The GNU General Public License is contained in the file COPYING. 29ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown*/ 30ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 31ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* Note: this is a "normal" program and not part of Valgrind proper, 32ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown and so it doesn't have to conform to Valgrind's arcane rules on 33ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown no-glibc-usage etc. */ 34ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 35ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* Include valgrind headers before system headers to avoid problems 36ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown with the system headers #defining things which are used as names 37ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown of structure members in vki headers. */ 38ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 39ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "pub_core_debuglog.h" 40ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "pub_core_vki.h" // Avoids warnings from 41ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // pub_core_libcfile.h 42ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "pub_core_libcproc.h" // For VALGRIND_LIB, VALGRIND_LAUNCHER 43ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "pub_core_ume.h" 44ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 45ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <assert.h> 46ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <ctype.h> 47ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <elf.h> 48ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <errno.h> 49ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <fcntl.h> 50ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <stdio.h> 51ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <stdlib.h> 52ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <string.h> 53ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <unistd.h> 54436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov#include <limits.h> // PATH_MAX 55ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 56ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#ifndef EM_X86_64 57ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#define EM_X86_64 62 // elf.h doesn't define this on some older systems 58ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#endif 59b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov 60436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov#ifndef EM_AARCH64 61436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov#define EM_AARCH64 183 // ditto 62436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov#endif 63436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov 64ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* Report fatal errors */ 65ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown__attribute__((noreturn)) 66ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownstatic void barf ( const char *format, ... ) 67ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown{ 68ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown va_list vargs; 69ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 70ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown va_start(vargs, format); 71ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown fprintf(stderr, "valgrind: Cannot continue: "); 72ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown vfprintf(stderr, format, vargs); 73ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown fprintf(stderr, "\n"); 74ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown va_end(vargs); 75ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 76ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown exit(1); 77ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /*NOTREACHED*/ 78ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown assert(0); 79ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 80ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 81ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* Search the path for the client program */ 82ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownstatic const char *find_client(const char *clientname) 83ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown{ 84436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov char *fullname; 85ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const char *path = getenv("PATH"); 86ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const char *colon; 87ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 88436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov assert(clientname != NULL); 89436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov 90436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov if (path == NULL) return clientname; 91436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov 92436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov /* Make the size of the FULLNAME buffer large enough. */ 93436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov unsigned need = strlen(path) + strlen("/") + strlen(clientname) + 1; 94436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov 95436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov fullname = malloc(need); 96436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov if (fullname == NULL) 97436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov barf("malloc of fullname failed."); 98436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov 99ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown while (path) 100ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown { 101ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if ((colon = strchr(path, ':')) == NULL) 102ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown { 103ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown strcpy(fullname, path); 104ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown path = NULL; 105ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 106ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown else 107ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown { 108436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov strncpy(fullname, path, colon - path); 109ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown fullname[colon - path] = '\0'; 110ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown path = colon + 1; 111ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 112ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 113ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown strcat(fullname, "/"); 114ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown strcat(fullname, clientname); 115ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 116ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (access(fullname, R_OK|X_OK) == 0) 117ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return fullname; 118ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 119436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov free(fullname); 120ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 121ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return clientname; 122ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 123ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 124ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* Examine the client and work out which platform it is for */ 125ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownstatic const char *select_platform(const char *clientname) 126ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown{ 127ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown int fd; 128436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov char header[4096]; 129ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ssize_t n_bytes; 130ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const char *platform = NULL; 131ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 132ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(2, "launcher", "selecting platform for '%s'\n", clientname); 133ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 134ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (strchr(clientname, '/') == NULL) 135ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown clientname = find_client(clientname); 136ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 137ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(2, "launcher", "selecting platform for '%s'\n", clientname); 138ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 139ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if ((fd = open(clientname, O_RDONLY)) < 0) 140ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return NULL; 141ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // barf("open(%s): %s", clientname, strerror(errno)); 142ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 143ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(2, "launcher", "opened '%s'\n", clientname); 144ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 145ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown n_bytes = read(fd, header, sizeof(header)); 146ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown close(fd); 147ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (n_bytes < 2) { 148ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return NULL; 149ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 150ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 151ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(2, "launcher", "read %ld bytes from '%s'\n", 152ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown (long int)n_bytes, clientname); 153ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 154ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (header[0] == '#' && header[1] == '!') { 155ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown int i = 2; 156ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown char *interp = (char *)header + 2; 157ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 158ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Skip whitespace. 159ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown while (1) { 160ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (i == n_bytes) return NULL; 161ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (' ' != header[i] && '\t' != header[i]) break; 162ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown i++; 163ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 164ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 165ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Get the interpreter name. 166ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown interp = &header[i]; 167ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown while (1) { 168ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (i == n_bytes) break; 169ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (isspace(header[i])) break; 170ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown i++; 171ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 172ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (i == n_bytes) return NULL; 173ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown header[i] = '\0'; 174ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 175ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown platform = select_platform(interp); 176ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 177ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else if (n_bytes >= SELFMAG && memcmp(header, ELFMAG, SELFMAG) == 0) { 178ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 179ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (n_bytes >= sizeof(Elf32_Ehdr) && header[EI_CLASS] == ELFCLASS32) { 180ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const Elf32_Ehdr *ehdr = (Elf32_Ehdr *)header; 181ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 182ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (header[EI_DATA] == ELFDATA2LSB) { 183ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (ehdr->e_machine == EM_386 && 184ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 185ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 186ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown platform = "x86-linux"; 187ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 188ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown else 189ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (ehdr->e_machine == EM_ARM && 190ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 191ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 192ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown platform = "arm-linux"; 193ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 194663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng else 195663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng if (ehdr->e_machine == EM_MIPS && 196663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 197663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 198663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng platform = "mips32-linux"; 199663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng } 200ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 201ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown else if (header[EI_DATA] == ELFDATA2MSB) { 202ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (ehdr->e_machine == EM_PPC && 203ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 204ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 205ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown platform = "ppc32-linux"; 206ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 207663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng else 208663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng if (ehdr->e_machine == EM_MIPS && 209663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 210663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 211663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng platform = "mips32-linux"; 212663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng } 213ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 214ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 215ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else if (n_bytes >= sizeof(Elf64_Ehdr) && header[EI_CLASS] == ELFCLASS64) { 216ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const Elf64_Ehdr *ehdr = (Elf64_Ehdr *)header; 217ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 218ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (header[EI_DATA] == ELFDATA2LSB) { 219ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (ehdr->e_machine == EM_X86_64 && 220ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 221ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 222ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown platform = "amd64-linux"; 223436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov } else if (ehdr->e_machine == EM_MIPS && 224436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 225436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 226436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov platform = "mips64-linux"; 227436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov } else if (ehdr->e_machine == EM_AARCH64 && 228436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 229436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 230436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov platform = "arm64-linux"; 231ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 232ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else if (header[EI_DATA] == ELFDATA2MSB) { 233436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov# if !defined(VGPV_arm_linux_android) \ 234436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov && !defined(VGPV_x86_linux_android) \ 235436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov && !defined(VGPV_mips32_linux_android) 236ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (ehdr->e_machine == EM_PPC64 && 237ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 238ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 239ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown platform = "ppc64-linux"; 240b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov } 241b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov else 242b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov if (ehdr->e_machine == EM_S390 && 243b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 244b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 245b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov platform = "s390x-linux"; 246436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov } else if (ehdr->e_machine == EM_MIPS && 247436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (ehdr->e_ident[EI_OSABI] == ELFOSABI_SYSV || 248436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov ehdr->e_ident[EI_OSABI] == ELFOSABI_LINUX)) { 249436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov platform = "mips64-linux"; 250ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 251b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov# endif 252ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 253ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 254ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 255ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 256ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(2, "launcher", "selected platform '%s'\n", 257ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown platform ? platform : "unknown"); 258ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 259ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return platform; 260ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 261ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 262ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/* Where we expect to find all our aux files */ 263ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownstatic const char *valgrind_lib = VG_LIBDIR; 264ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 265ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownint main(int argc, char** argv, char** envp) 266ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown{ 267ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown int i, j, loglevel, r; 268ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const char *toolname = NULL; 269ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const char *clientname = NULL; 270ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const char *platform; 271ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const char *default_platform; 272ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const char *cp; 273ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown char *toolfile; 274ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown char launcher_name[PATH_MAX+1]; 275ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown char* new_line; 276ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown char** new_env; 277ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 278ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /* Start the debugging-log system ASAP. First find out how many 279ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "-d"s were specified. This is a pre-scan of the command line. 280ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown At the same time, look for the tool name. */ 281ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown loglevel = 0; 282ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown for (i = 1; i < argc; i++) { 283ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (argv[i][0] != '-') { 284ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown clientname = argv[i]; 285ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown break; 286ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 287ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (0 == strcmp(argv[i], "--")) { 288ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (i+1 < argc) 289ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown clientname = argv[i+1]; 290ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown break; 291ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 292ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (0 == strcmp(argv[i], "-d")) 293ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown loglevel++; 294ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (0 == strncmp(argv[i], "--tool=", 7)) 295ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown toolname = argv[i] + 7; 296ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 297ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 298ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /* ... and start the debug logger. Now we can safely emit logging 299ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown messages all through startup. */ 300ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog_startup)(loglevel, "Stage 1"); 301ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 302ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /* Make sure we know which tool we're using */ 303ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (toolname) { 304ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(1, "launcher", "tool '%s' requested\n", toolname); 305ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else { 306ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(1, "launcher", 307ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "no tool requested, defaulting to 'memcheck'\n"); 308ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown toolname = "memcheck"; 309ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 310ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 311ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /* Select a platform to use if we can't decide that by looking at 312ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown the executable (eg because it's a shell script). Note that the 313ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown default_platform is not necessarily either the primary or 314ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown secondary build target. Instead it's chosen to maximise the 315ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown chances that /bin/sh will work on it. Hence for a primary 316ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown target of ppc64-linux we still choose ppc32-linux as the default 317ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown target, because on most ppc64-linux setups, the basic /bin, 318ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /usr/bin, etc, stuff is built in 32-bit mode, not 64-bit 319ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown mode. */ 320436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov if ((0==strcmp(VG_PLATFORM,"x86-linux")) || 321436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (0==strcmp(VG_PLATFORM,"amd64-linux")) || 322436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (0==strcmp(VG_PLATFORM,"ppc32-linux")) || 323436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (0==strcmp(VG_PLATFORM,"ppc64-linux")) || 324436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (0==strcmp(VG_PLATFORM,"arm-linux")) || 325436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (0==strcmp(VG_PLATFORM,"arm64-linux")) || 326436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (0==strcmp(VG_PLATFORM,"s390x-linux")) || 327436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (0==strcmp(VG_PLATFORM,"mips32-linux")) || 328436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov (0==strcmp(VG_PLATFORM,"mips64-linux"))) 329ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown default_platform = VG_PLATFORM; 330ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown else 331ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown barf("Unknown VG_PLATFORM '%s'", VG_PLATFORM); 332ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 333ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /* Work out what platform to use, or use the default platform if 334ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown not possible. */ 335ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (clientname == NULL) { 336ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(1, "launcher", 337ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "no client specified, defaulting platform to '%s'\n", 338ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown default_platform); 339ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown platform = default_platform; 340ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else if ((platform = select_platform(clientname)) != NULL) { 341ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(1, "launcher", "selected platform '%s'\n", platform); 342ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else { 343ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(1, "launcher", 344ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "no platform detected, defaulting platform to '%s'\n", 345ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown default_platform); 346ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown platform = default_platform; 347ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 348ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 349ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /* Figure out the name of this executable (viz, the launcher), so 350ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown we can tell stage2. stage2 will use the name for recursive 351ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown invocations of valgrind on child processes. */ 352ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown memset(launcher_name, 0, PATH_MAX+1); 353ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown r = readlink("/proc/self/exe", launcher_name, PATH_MAX); 354ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (r == -1) { 355ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /* If /proc/self/exe can't be followed, don't give up. Instead 356ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown continue with an empty string for VALGRIND_LAUNCHER. In the 357ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown sys_execve wrapper, this is tested, and if found to be empty, 358ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown fail the execve. */ 359ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown fprintf(stderr, "valgrind: warning (non-fatal): " 360ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "readlink(\"/proc/self/exe\") failed.\n"); 361ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown fprintf(stderr, "valgrind: continuing, however --trace-children=yes " 362ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "will not work.\n"); 363ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 364ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 365ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /* tediously augment the env: VALGRIND_LAUNCHER=launcher_name */ 366ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown new_line = malloc(strlen(VALGRIND_LAUNCHER) + 1 367ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown + strlen(launcher_name) + 1); 368ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (new_line == NULL) 369ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown barf("malloc of new_line failed."); 370ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown strcpy(new_line, VALGRIND_LAUNCHER); 371ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown strcat(new_line, "="); 372ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown strcat(new_line, launcher_name); 373ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 374ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown for (j = 0; envp[j]; j++) 375ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ; 376ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown new_env = malloc((j+2) * sizeof(char*)); 377ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (new_env == NULL) 378ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown barf("malloc of new_env failed."); 379ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown for (i = 0; i < j; i++) 380ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown new_env[i] = envp[i]; 381ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown new_env[i++] = new_line; 382ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown new_env[i++] = NULL; 383ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown assert(i == j+2); 384ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 385ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /* Establish the correct VALGRIND_LIB. */ 386ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown cp = getenv(VALGRIND_LIB); 387ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 388ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (cp != NULL) 389ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown valgrind_lib = cp; 390ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 391ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /* Build the stage2 invocation, and execve it. Bye! */ 392ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown toolfile = malloc(strlen(valgrind_lib) + strlen(toolname) + strlen(platform) + 3); 393ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (toolfile == NULL) 394ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown barf("malloc of toolfile failed."); 395ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown sprintf(toolfile, "%s/%s-%s", valgrind_lib, toolname, platform); 396ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 397ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown VG_(debugLog)(1, "launcher", "launching %s\n", toolfile); 398ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 399ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown execve(toolfile, argv, new_env); 400ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 401ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown fprintf(stderr, "valgrind: failed to start tool '%s' for platform '%s': %s\n", 402ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown toolname, platform, strerror(errno)); 403ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 404ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown exit(1); 405ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 406