+static void smpi_copy_file(std::string src, std::string target, off_t fdin_size)
+{
+ int fdin = open(src.c_str(), O_RDONLY);
+ xbt_assert(fdin >= 0, "Cannot read from %s. Please make sure that the file exists and is executable.", src.c_str());
+ int fdout = open(target.c_str(), O_CREAT | O_RDWR, S_IRWXU);
+ xbt_assert(fdout >= 0, "Cannot write into %s", target.c_str());
+
+ XBT_DEBUG("Copy %ld bytes into %s", static_cast<long>(fdin_size), target.c_str());
+#if HAVE_SENDFILE
+ ssize_t sent_size = sendfile(fdout, fdin, NULL, fdin_size);
+ xbt_assert(sent_size == fdin_size, "Error while copying %s: only %zd bytes copied instead of %ld (errno: %d -- %s)",
+ target.c_str(), sent_size, fdin_size, errno, strerror(errno));
+#else
+ const int bufsize = 1024 * 1024 * 4;
+ char buf[bufsize];
+ while (int got = read(fdin, buf, bufsize)) {
+ if (got == -1) {
+ xbt_assert(errno == EINTR, "Cannot read from %s", src.c_str());
+ } else {
+ char* p = buf;
+ int todo = got;
+ while (int done = write(fdout, p, todo)) {
+ if (done == -1) {
+ xbt_assert(errno == EINTR, "Cannot write into %s", target.c_str());
+ } else {
+ p += done;
+ todo -= done;
+ }
+ }
+ }
+ }
+#endif
+ close(fdin);
+ close(fdout);
+}
+
+#if not defined(__APPLE__)
+static int visit_libs (struct dl_phdr_info *info,
+ size_t size, void *data){
+ char* libname = (char*)(data);
+ const char *path = info->dlpi_name;
+ if(strstr(path, libname)){
+ strncpy(libname, path, 512);
+ return 1;
+ }
+
+ return 0;
+}
+#endif
+