diff options
Diffstat (limited to 'llvm_mode/afl-ld.c')
| -rw-r--r-- | llvm_mode/afl-ld.c | 839 |
1 files changed, 0 insertions, 839 deletions
diff --git a/llvm_mode/afl-ld.c b/llvm_mode/afl-ld.c deleted file mode 100644 index eb46c85c..00000000 --- a/llvm_mode/afl-ld.c +++ /dev/null @@ -1,839 +0,0 @@ -/* - american fuzzy lop++ - wrapper for GNU ld - ----------------------------------------- - - Written by Marc Heuse <mh@mh-sec.de> for afl++ - - Maintained by Marc Heuse <mh@mh-sec.de>, - Heiko Eißfeldt <heiko.eissfeldt@hexco.de> - Andrea Fioraldi <andreafioraldi@gmail.com> - Dominik Maier <domenukk@gmail.com> - - Copyright 2019-2020 AFLplusplus Project. All rights reserved. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at: - - http://www.apache.org/licenses/LICENSE-2.0 - - The sole purpose of this wrapper is to preprocess clang LTO files before - linking by ld and perform the instrumentation on the whole program. - -*/ - -#define AFL_MAIN - -#include "config.h" -#include "types.h" -#include "debug.h" -#include "alloc-inl.h" - -#include <stdio.h> -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> -#include <ctype.h> -#include <fcntl.h> - -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <sys/time.h> - -#include <dirent.h> - -#define MAX_PARAM_COUNT 4096 - -static u8 **ld_params, /* Parameters passed to the real 'ld' */ - **link_params, /* Parameters passed to 'llvm-link' */ - **opt_params, /* Parameters passed to 'opt' opt */ - **inst_params; /* Parameters passed to 'opt' inst */ - -static u8 *input_file; /* Originally specified input file */ -static u8 *final_file, /* Instrumented file for the real 'ld' */ - *linked_file, /* file where we link all files */ - *modified_file; /* file that was optimized before instr */ -static u8 *afl_path = AFL_PATH; -static u8 *real_ld = AFL_REAL_LD; -static u8 cwd[4096]; -static u8 *tmp_dir; -static u8 *ar_dir; -static u8 ar_dir_cnt; -static u8 *libdirs[254]; -static u8 libdir_cnt; - -static u8 be_quiet, /* Quiet mode (no stderr output) */ - debug, /* AFL_DEBUG */ - passthrough, /* AFL_LD_PASSTHROUGH - no link+optimize*/ - we_link, /* we have bc/ll -> link + optimize */ - just_version; /* Just show version? */ - -static u32 ld_param_cnt = 1, /* Number of params to 'ld' */ - link_param_cnt = 1, /* Number of params to 'llvm-link' */ - opt_param_cnt = 1, /* Number of params to 'opt' opt */ - inst_param_cnt = 1; /* Number of params to 'opt' instr */ - -/* This function wipes a directory - our AR unpack directory in this case */ -static u8 wipe_directory(u8 *path) { - - DIR * d; - struct dirent *d_ent; - - d = opendir(path); - - if (!d) return 0; - - while ((d_ent = readdir(d))) { - - if (strcmp(d_ent->d_name, ".") != 0 && strcmp(d_ent->d_name, "..") != 0) { - - u8 *fname = alloc_printf("%s/%s", path, d_ent->d_name); - if (unlink(fname)) PFATAL("Unable to delete '%s'", fname); - ck_free(fname); - - } - - } - - closedir(d); - - return !!rmdir(path); - -} - -/* remove temporary files on fatal errors */ -static void at_exit_handler(void) { - - if (!getenv("AFL_KEEP_ASSEMBLY")) { - - if (linked_file) { - - unlink(linked_file); - linked_file = NULL; - - } - - if (modified_file) { - - unlink(modified_file); - modified_file = NULL; - - } - - if (final_file) { - - unlink(final_file); - final_file = NULL; - - } - - if (ar_dir != NULL) { - - wipe_directory(ar_dir); - ar_dir = NULL; - - } - - } - -} - -/* This function checks if the parameter is a) an existing file and b) - if it is a BC or LL file, if both are true it returns 1 and 0 otherwise */ -int is_llvm_file(const char *file) { - - int fd; - u8 buf[5]; - - if ((fd = open(file, O_RDONLY)) < 0) { - - if (debug) SAYF(cMGN "[D] " cRST "File %s not found", file); - return 0; - - } - - if (read(fd, buf, 4) != 4) return 0; - buf[sizeof(buf) - 1] = 0; - - close(fd); - - if (strncmp(buf, "; Mo", 4) == 0) return 1; - - if (buf[0] == 'B' && buf[1] == 'C' && buf[2] == 0xc0 && buf[3] == 0xde) - return 1; - - return 0; - -} - -/* Return the current working directory, not thread safe ;-) */ -u8 *getthecwd() { - - static u8 fail[] = ""; - if (getcwd(cwd, sizeof(cwd)) == NULL) return fail; - return cwd; - -} - -/* Check if an ar extracted file is already in the parameter list */ -int is_duplicate(u8 **params, u32 ld_param_cnt, u8 *ar_file) { - - for (uint32_t i = 0; i < ld_param_cnt; i++) - if (params[i] != NULL) - if (strcmp(params[i], ar_file) == 0) return 1; - - return 0; - -} - -/* Examine and modify parameters to pass to 'ld', 'llvm-link' and 'llmv-ar'. - Note that the file name is always the last parameter passed by GCC, - so we exploit this property to keep the code "simple". */ -static void edit_params(int argc, char **argv) { - - u32 i, have_lto = 0, libdir_index; - u8 libdir_file[4096]; - - if (tmp_dir == NULL) { - - tmp_dir = getenv("TMPDIR"); - if (!tmp_dir) tmp_dir = getenv("TEMP"); - if (!tmp_dir) tmp_dir = getenv("TMP"); - if (!tmp_dir) tmp_dir = "/tmp"; - - } - - linked_file = - alloc_printf("%s/.afl-%u-%u-1.ll", tmp_dir, getpid(), (u32)time(NULL)); - modified_file = - alloc_printf("%s/.afl-%u-%u-2.bc", tmp_dir, getpid(), (u32)time(NULL)); - final_file = - alloc_printf("%s/.afl-%u-%u-3.bc", tmp_dir, getpid(), (u32)time(NULL)); - - ld_params = ck_alloc(4096 * sizeof(u8 *)); - link_params = ck_alloc(4096 * sizeof(u8 *)); - inst_params = ck_alloc(12 * sizeof(u8 *)); - opt_params = ck_alloc(12 * sizeof(u8 *)); - - ld_params[0] = (u8 *)real_ld; - ld_params[ld_param_cnt++] = "--allow-multiple-definition"; - - link_params[0] = alloc_printf("%s/%s", LLVM_BINDIR, "llvm-link"); - link_params[link_param_cnt++] = "-S"; // we create the linked file as .ll - link_params[link_param_cnt++] = "-o"; - link_params[link_param_cnt++] = linked_file; - - opt_params[0] = alloc_printf("%s/%s", LLVM_BINDIR, "opt"); - if (getenv("AFL_DONT_OPTIMIZE") == NULL) - opt_params[opt_param_cnt++] = "-O3"; - else - opt_params[opt_param_cnt++] = "-O0"; - - // opt_params[opt_param_cnt++] = "-S"; // only when debugging - opt_params[opt_param_cnt++] = linked_file; // input: .ll file - opt_params[opt_param_cnt++] = "-o"; - opt_params[opt_param_cnt++] = modified_file; // output: .bc file - - inst_params[0] = alloc_printf("%s/%s", LLVM_BINDIR, "opt"); - inst_params[inst_param_cnt++] = - alloc_printf("--load=%s/afl-llvm-lto-instrumentation.so", afl_path); - // inst_params[inst_param_cnt++] = "-S"; // only when debugging - inst_params[inst_param_cnt++] = "--disable-opt"; - inst_params[inst_param_cnt++] = "--afl-lto"; - inst_params[inst_param_cnt++] = modified_file; // input: .bc file - inst_params[inst_param_cnt++] = "-o"; - inst_params[inst_param_cnt++] = final_file; // output: .bc file - - // first we must collect all library search paths - for (i = 1; i < argc; i++) - if (strlen(argv[i]) > 2 && argv[i][0] == '-' && argv[i][1] == 'L') - libdirs[libdir_cnt++] = argv[i] + 2; - - // then we inspect all options to the target linker - for (i = 1; i < argc; i++) { - - if (ld_param_cnt >= MAX_PARAM_COUNT || link_param_cnt >= MAX_PARAM_COUNT) - FATAL( - "Too many command line parameters because of unpacking .a archives, " - "this would need to be done by hand ... sorry! :-("); - - if (strncmp(argv[i], "-flto", 5) == 0) have_lto = 1; - - if (!strcmp(argv[i], "-version")) { - - just_version = 1; - ld_params[1] = argv[i]; - ld_params[2] = NULL; - final_file = input_file; - return; - - } - - if (strcmp(argv[i], "--afl") == 0) { - - if (!be_quiet) OKF("afl++ test command line flag detected, exiting."); - exit(0); - - } - - // if a -l library is linked and no .so is found but an .a archive is there - // then the archive will be used. So we have to emulate this and check - // if an archive will be used and if yes we will instrument it too - libdir_file[0] = 0; - libdir_index = libdir_cnt; - if (strncmp(argv[i], "-l", 2) == 0 && libdir_cnt > 0 && - strncmp(argv[i], "-lgcc", 5) != 0) { - - u8 found = 0; - - for (uint32_t j = 0; j < libdir_cnt && !found; j++) { - - snprintf(libdir_file, sizeof(libdir_file), "%s/lib%s%s", libdirs[j], - argv[i] + 2, ".so"); - if (access(libdir_file, R_OK) != 0) { // no .so found? - - snprintf(libdir_file, sizeof(libdir_file), "%s/lib%s%s", libdirs[j], - argv[i] + 2, ".a"); - if (access(libdir_file, R_OK) == 0) { // but .a found? - - libdir_index = j; - found = 1; - if (debug) SAYF(cMGN "[D] " cRST "Found %s\n", libdir_file); - - } - - } else { - - found = 1; - if (debug) SAYF(cMGN "[D] " cRST "Found %s\n", libdir_file); - - } - - } - - } - - // is the parameter an .a AR archive? If so, unpack and check its files - if (libdir_index < libdir_cnt || - (argv[i][0] != '-' && strlen(argv[i]) > 2 && - argv[i][strlen(argv[i]) - 1] == 'a' && - argv[i][strlen(argv[i]) - 2] == '.')) { - - // This gets a bit odd. I encountered several .a files being linked and - // where the same "foo.o" was in both .a archives. llvm-link does not - // like this so we have to work around that ... - - u8 this_wd[4096], *this_ar; - u8 ar_params_cnt = 4; - u8 * ar_params[ar_params_cnt]; - u8 * file = argv[i]; - s32 pid, status; - DIR * arx; - struct dirent *dir_ent; - - if (libdir_index < libdir_cnt) file = libdir_file; - - if (ar_dir_cnt == 0) { // first archive, we setup up the basics - - ar_dir = alloc_printf("%s/.afl-%u-%u.dir", tmp_dir, getpid(), - (u32)time(NULL)); - if (mkdir(ar_dir, 0700) != 0) - FATAL("can not create temporary directory %s", ar_dir); - - } - - if (getcwd(this_wd, sizeof(this_wd)) == NULL) - FATAL("can not get the current working directory"); - if (chdir(ar_dir) != 0) - FATAL("can not chdir to temporary directory %s", ar_dir); - if (file[0] == '/') - this_ar = file; - else - this_ar = alloc_printf("%s/%s", this_wd, file); - ar_params[0] = alloc_printf("%s/%s", LLVM_BINDIR, "llvm-ar"); - ar_params[1] = "x"; - ar_params[2] = this_ar; - ar_params[3] = NULL; - - if (!be_quiet) OKF("Running ar unpacker on %s into %s", this_ar, ar_dir); - - if (debug) { - - SAYF(cMGN "[D]" cRST " cd \"%s\";", getthecwd()); - for (uint32_t j = 0; j < ar_params_cnt; j++) - SAYF(" \"%s\"", ar_params[j]); - SAYF("\n"); - - } - - if (!(pid = fork())) { - - execvp(ar_params[0], (char **)ar_params); - FATAL("Oops, failed to execute '%s'", ar_params[0]); - - } - - if (pid < 0) FATAL("fork() failed"); - if (waitpid(pid, &status, 0) <= 0) FATAL("waitpid() failed"); - if (WEXITSTATUS(status) != 0) exit(WEXITSTATUS(status)); - - if (chdir(this_wd) != 0) - FATAL("can not chdir back to our working directory %s", this_wd); - - if (!(arx = opendir(ar_dir))) FATAL("can not open directory %s", ar_dir); - - while ((dir_ent = readdir(arx)) != NULL) { - - u8 *ar_file = alloc_printf("%s/%s", ar_dir, dir_ent->d_name); - - if (dir_ent->d_name[strlen(dir_ent->d_name) - 1] == 'o' && - dir_ent->d_name[strlen(dir_ent->d_name) - 2] == '.') { - - if (passthrough || is_llvm_file(ar_file) == 0) { - - if (is_duplicate(ld_params, ld_param_cnt, ar_file) == 0) { - - ld_params[ld_param_cnt++] = ar_file; - if (debug) - SAYF(cMGN "[D] " cRST "not a LTO link file: %s\n", ar_file); - - } - - } else { - - if (is_duplicate(link_params, link_param_cnt, ar_file) == 0) { - - if (we_link == 0) { // we have to honor order ... - - ld_params[ld_param_cnt++] = final_file; - we_link = 1; - - } - - link_params[link_param_cnt++] = ar_file; - if (debug) SAYF(cMGN "[D] " cRST "is a link file: %s\n", ar_file); - - } - - } - - } else - - if (dir_ent->d_name[0] != '.' && !be_quiet) - WARNF("Unusual file found in ar archive %s: %s", argv[i], ar_file); - - } - - closedir(arx); - ar_dir_cnt++; - - continue; - - } - - if (passthrough || argv[i][0] == '-' || is_llvm_file(argv[i]) == 0) { - - // -O3 fucks up the CFG and instrumentation, so we downgrade to O2 - // which is as we want things. Lets hope this is not too different - // in the various llvm versions! - if (strncmp(argv[i], "-plugin-opt=O", 13) == 0 && - !getenv("AFL_DONT_OPTIMIZE")) - ld_params[ld_param_cnt++] = "-plugin-opt=O2"; - else - ld_params[ld_param_cnt++] = argv[i]; - - } else { - - if (we_link == 0) { // we have to honor order ... - ld_params[ld_param_cnt++] = final_file; - we_link = 1; - - } - - link_params[link_param_cnt++] = argv[i]; - - } - - } - - // if (have_lto == 0) ld_params[ld_param_cnt++] = AFL_CLANG_FLTO; // maybe we - // should not ... - ld_params[ld_param_cnt] = NULL; - link_params[link_param_cnt] = NULL; - opt_params[opt_param_cnt] = NULL; - inst_params[inst_param_cnt] = NULL; - -} - -/* clean AFL_PATH from PATH */ - -void clean_path() { - - char *tmp, *newpath = NULL, *path = getenv("PATH"); - u8 done = 0; - - if (debug) - SAYF(cMGN "[D]" cRST " old PATH=%s, AFL_PATH=%s\n", path, AFL_PATH); - - // wipe AFL paths from PATH that we set - // we added two paths so we remove the two paths - while (!done) { - - if (*path == 0) - done = 1; - else if (*path++ == ':') - done = 1; - - } - - while (*path == ':') - path++; - - // AFL_PATH could be additionally in PATH so check and remove to not call our - // 'ld' - const size_t pathlen = strlen(path); - const size_t afl_pathlen = strlen(AFL_PATH); - newpath = malloc(pathlen + 1); - if (strcmp(AFL_PATH, "/bin") != 0 && strcmp(AFL_PATH, "/usr/bin") != 0 && - afl_pathlen > 1 && (tmp = strstr(path, AFL_PATH)) != NULL && // it exists - (tmp == path || - (tmp > path && - tmp[-1] == ':')) && // either starts with it or has a colon before - (tmp + afl_pathlen == path + pathlen || - (tmp + afl_pathlen < - path + (pathlen && tmp[afl_pathlen] == - ':')) // end with it or has a colon at the end - )) { - - int one_colon = 1; - - if (tmp > path) { - - memcpy(newpath, path, tmp - path); - newpath[tmp - path - 1] = 0; // remove ':' - one_colon = 0; - - } - - if (tmp + afl_pathlen < path + pathlen) tmp += afl_pathlen + one_colon; - - setenv("PATH", newpath, 1); - - } else - - setenv("PATH", path, 1); - - if (debug) SAYF(cMGN "[D]" cRST " new PATH=%s\n", getenv("PATH")); - free(newpath); - -} - -/* Main entry point */ - -int main(int argc, char **argv) { - - s32 pid, i; - int status; - u8 *ptr, exe[4096], exe2[4096], proc[32], val[2] = " "; - int have_afl_ld_caller = 0; - - if (isatty(2) && !getenv("AFL_QUIET") && !getenv("AFL_DEBUG")) { - - if (getenv("AFL_LD") != NULL) - SAYF(cCYA "afl-ld" VERSION cRST - " by Marc \"vanHauser\" Heuse <mh@mh-sec.de> (level %d)\n", - have_afl_ld_caller); - - } else - - be_quiet = 1; - - if (getenv("AFL_DEBUG") != NULL) debug = 1; - if (getenv("AFL_PATH") != NULL) afl_path = getenv("AFL_PATH"); - if (getenv("AFL_LD_PASSTHROUGH") != NULL) passthrough = 1; - if (getenv("AFL_REAL_LD") != NULL) real_ld = getenv("AFL_REAL_LD"); - if (real_ld == NULL || strlen(real_ld) < 2) real_ld = "/bin/ld"; - if (real_ld != NULL && real_ld[0] != '/') - real_ld = alloc_printf("/bin/%s", real_ld); - - if ((ptr = getenv("AFL_LD_CALLER")) != NULL) have_afl_ld_caller = atoi(ptr); - val[0] = 0x31 + have_afl_ld_caller; - setenv("AFL_LD_CALLER", val, 1); - - if (debug) { - - SAYF(cMGN "[D] " cRST - "AFL_LD=%s, set AFL_LD_CALLER=%s, have_afl_ld_caller=%d, " - "real_ld=%s\n", - getenv("AFL_LD"), val, have_afl_ld_caller, real_ld); - SAYF(cMGN "[D]" cRST " cd \"%s\";", getthecwd()); - for (i = 0; i < argc; i++) - SAYF(" \"%s\"", argv[i]); - SAYF("\n"); - - } - - sprintf(proc, "/proc/%d/exe", getpid()); - if (readlink(proc, exe, sizeof(exe) - 1) > 0) { - - if (readlink(real_ld, exe2, sizeof(exe2) - 1) < 1) exe2[0] = 0; - exe[sizeof(exe) - 1] = 0; - exe[sizeof(exe2) - 1] = 0; - if (strcmp(exe, real_ld) == 0 || strcmp(exe, exe2) == 0) - PFATAL(cLRD "[!] " cRST - "Error: real 'ld' path points to afl-ld, set AFL_REAL_LD to " - "the real 'ld' program!"); - - } - - if (have_afl_ld_caller > 1) - PFATAL(cLRD "[!] " cRST - "Error: afl-ld calls itself in a loop, set AFL_REAL_LD to the " - "real 'ld' program!"); - - if (argc < 2) { - - SAYF( - "\n" - "This is a helper application for afl-fuzz. It is a wrapper around GNU " - "'ld',\n" - "executed by the toolchain whenever using " - "afl-clang-lto/afl-clang-lto++.\n" - "You probably don't want to run this program directly.\n\n" - - "Environment variables:\n" - " AFL_LD_PASSTHROUGH do not link+optimize == no instrumentation\n" - " AFL_REAL_LD point to the real ld if necessary\n" - - "\nafl-ld was compiled with the fixed real 'ld' path of %s and the " - "clang " - "bin path of %s\n\n", - real_ld, LLVM_BINDIR); - - exit(1); - - } - - if (getenv("AFL_LD") == NULL) { - - /* if someone install clang/ld into the same directory as afl++ then - they are out of luck ... */ - - if (have_afl_ld_caller == 1) { clean_path(); } - - if (real_ld != NULL && strlen(real_ld) > 1) execvp(real_ld, argv); - execvp("ld", argv); // fallback - PFATAL("Oops, failed to execute 'ld' - check your PATH"); - - } - - atexit(at_exit_handler); // ensure to wipe temp files if things fail - - edit_params(argc, argv); // here most of the magic happens :-) - - if (debug) - SAYF(cMGN "[D] " cRST - "param counts: ar:%u lib:%u ld:%u link:%u opt:%u instr:%u\n", - ar_dir_cnt, libdir_cnt, ld_param_cnt, link_param_cnt, opt_param_cnt, - inst_param_cnt); - - if (!just_version) { - - if (we_link == 0) { - - if (!getenv("AFL_QUIET")) - WARNF("No LTO input file found, cannot instrument!"); - - } else { - - /* first we link all files */ - if (!be_quiet) OKF("Running bitcode linker, creating %s", linked_file); - - if (debug) { - - SAYF(cMGN "[D]" cRST " cd \"%s\";", getthecwd()); - for (i = 0; i < link_param_cnt; i++) - SAYF(" \"%s\"", link_params[i]); - SAYF("\n"); - - } - - if (!(pid = fork())) { - - execvp(link_params[0], (char **)link_params); - FATAL("Oops, failed to execute '%s'", link_params[0]); - - } - - if (pid < 0) PFATAL("fork() failed"); - if (waitpid(pid, &status, 0) <= 0) PFATAL("waitpid() failed"); - if (WEXITSTATUS(status) != 0) { - - SAYF(bSTOP RESET_G1 CURSOR_SHOW cRST cLRD - "\n[-] PROGRAM ABORT : " cRST); - SAYF( - "llvm-link failed! Probable causes:\n\n" - " #1 If the error is \"linking globals named '...': symbol " - "multiply defined\"\n" - " then there is nothing we can do - llvm-link is missing an " - "important feature\n\n" - " #2 If the error is \"expected top-level entity\" and then " - "binary output, this\n" - " is because the same file is present in different .a archives " - "in different\n" - " formats. This can be fixed by manual doing the steps afl-ld " - "is doing but\n" - " programmatically - sorry!\n\n"); - exit(WEXITSTATUS(status)); - - } - - /* then we perform an optimization on the collected objects files */ - if (!be_quiet) - OKF("Performing optimization via opt, creating %s", modified_file); - if (debug) { - - SAYF(cMGN "[D]" cRST " cd \"%s\";", getthecwd()); - for (i = 0; i < opt_param_cnt; i++) - SAYF(" \"%s\"", opt_params[i]); - SAYF("\n"); - - } - - if (!(pid = fork())) { - - execvp(opt_params[0], (char **)opt_params); - FATAL("Oops, failed to execute '%s'", opt_params[0]); - - } - - if (pid < 0) PFATAL("fork() failed"); - if (waitpid(pid, &status, 0) <= 0) PFATAL("waitpid() failed"); - if (WEXITSTATUS(status) != 0) exit(WEXITSTATUS(status)); - - /* then we run the instrumentation through the optimizer */ - if (!be_quiet) - OKF("Performing instrumentation via opt, creating %s", final_file); - if (debug) { - - SAYF(cMGN "[D]" cRST " cd \"%s\";", getthecwd()); - for (i = 0; i < inst_param_cnt; i++) - SAYF(" \"%s\"", inst_params[i]); - SAYF("\n"); - - } - - if (!(pid = fork())) { - - execvp(inst_params[0], (char **)inst_params); - FATAL("Oops, failed to execute '%s'", inst_params[0]); - - } - - if (pid < 0) PFATAL("fork() failed"); - if (waitpid(pid, &status, 0) <= 0) PFATAL("waitpid() failed"); - if (WEXITSTATUS(status) != 0) exit(WEXITSTATUS(status)); - - } - - /* next step - run the linker! :-) */ - - } - - if (!be_quiet) OKF("Running real linker %s", real_ld); - if (debug) { - - SAYF(cMGN "[D]" cRST " cd \"%s\";", getthecwd()); - for (i = 0; i < ld_param_cnt; i++) - SAYF(" \"%s\"", ld_params[i]); - SAYF("\n"); - - } - - if (!(pid = fork())) { - - clean_path(); - - unsetenv("AFL_LD"); - - if (strlen(real_ld) > 1) execvp(real_ld, (char **)ld_params); - execvp("ld", (char **)ld_params); // fallback - FATAL("Oops, failed to execute 'ld' - check your PATH"); - - } - - if (pid < 0) PFATAL("fork() failed"); - - if (waitpid(pid, &status, 0) <= 0) PFATAL("waitpid() failed"); - if (debug) SAYF(cMGN "[D] " cRST "linker result: %d\n", status); - - if (!just_version) { - - if (!getenv("AFL_KEEP_ASSEMBLY")) { - - if (linked_file) { - - unlink(linked_file); - linked_file = NULL; - - } - - if (modified_file) { - - unlink(modified_file); - modified_file = NULL; - - } - - if (final_file) { - - unlink(final_file); - final_file = NULL; - - } - - if (ar_dir != NULL) { - - wipe_directory(ar_dir); - ar_dir = NULL; - - } - - } else { - - if (!be_quiet) { - - SAYF( - "[!] afl-ld: keeping link file %s, optimized bitcode %s and " - "instrumented bitcode %s", - linked_file, modified_file, final_file); - if (ar_dir_cnt > 0 && ar_dir) - SAYF(" and ar archive unpack directory %s", ar_dir); - SAYF("\n"); - - } - - } - - if (status == 0) { - - if (!be_quiet) OKF("Linker was successful"); - - } else { - - SAYF(cLRD "[-] " cRST - "Linker failed, please investigate and send a bug report. Most " - "likely an 'ld' option is incompatible with %s. Try " - "AFL_KEEP_ASSEMBLY=1 and AFL_DEBUG=1 for replaying.\n", - AFL_CLANG_FLTO); - - } - - } - - exit(WEXITSTATUS(status)); - -} - |