#include <apt-pkg/fileutl.h> #include <apt-pkg/strutl.h> #include <apt-pkg/error.h> #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include <stdlib.h> #include <fcntl.h> #include <iostream> #include <string> static void callsystem(std::string const &call) { auto ret = system(call.c_str()); if (WIFEXITED(ret) == false || WEXITSTATUS(ret) != 0) _error->Error("Calling %s failed!", call.c_str()); } int main(int, char ** argv) { auto const pid = getpid(); std::string ls; strprintf(ls, "ls -l /proc/%d/fd", pid); callsystem(ls); FileFd t; t.Open(argv[1], FileFd::ReadOnly, FileFd::Extension); callsystem(ls); char buf[1024]; unsigned long long act; while (t.Read(buf, sizeof(buf), &act)) if (act == 0) break; callsystem(ls); t.Seek(5); callsystem(ls); t.Close(); callsystem(ls); auto const ret = _error->PendingError(); _error->DumpErrors(); return ret; }