C++ (Cpp) handle_posix_error Examples

Example #1

File: io_debug.c Project: leberus/radare2

// __UNIX__ (not windows)
static int fork_and_ptraceme_for_mac(RIO *io, int bits, const char *cmd) {
	bool runprofile = io->runprofile && *(io->runprofile);
	pid_t p = -1;
	char **argv;
	posix_spawn_file_actions_t fileActions;
	ut32 ps_flags = POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK;
	sigset_t no_signals;
	sigset_t all_signals;
	size_t copied = 1;
	cpu_type_t cpu = CPU_TYPE_ANY;
	posix_spawnattr_t attr = {0};
	posix_spawnattr_init (&attr);

	sigemptyset (&no_signals);
	sigfillset (&all_signals);
	posix_spawnattr_setsigmask (&attr, &no_signals);
	posix_spawnattr_setsigdefault (&attr, &all_signals);

	posix_spawn_file_actions_init (&fileActions);
	posix_spawn_file_actions_addinherit_np (&fileActions, STDIN_FILENO);
	posix_spawn_file_actions_addinherit_np (&fileActions, STDOUT_FILENO);
	posix_spawn_file_actions_addinherit_np (&fileActions, STDERR_FILENO);

	ps_flags |= POSIX_SPAWN_CLOEXEC_DEFAULT;
	ps_flags |= POSIX_SPAWN_START_SUSPENDED;
#define _POSIX_SPAWN_DISABLE_ASLR 0x0100
	if (!runprofile) {
		int ret, useASLR = io->aslr;
		char *_cmd = io->args
			? r_str_appendf (strdup (cmd), " %s", io->args)
			: strdup (cmd);
		argv = r_str_argv (_cmd, NULL);
		if (!argv) {
			free (_cmd);
			return -1;
		}
		if (!*argv) {
			r_str_argv_free (argv);
			free (_cmd);
			eprintf ("Invalid execvp\n");
			return -1;
		}
		if (useASLR != -1) {
			if (!useASLR) {
				ps_flags |= _POSIX_SPAWN_DISABLE_ASLR;
			}
		}
		(void)posix_spawnattr_setflags (&attr, ps_flags);
#if __x86_64__
		if (bits == 32) {
			cpu = CPU_TYPE_I386;
			// cpu |= CPU_ARCH_ABI64;
		}
#endif
		posix_spawnattr_setbinpref_np (&attr, 1, &cpu, &copied);
		{
			char *dst = r_file_readlink (argv[0]);
			if (dst) {
				argv[0] = dst;
			}
		}
		// XXX: this is a workaround to fix spawning programs with spaces in path
		if (strstr (argv[0], "\\ ")) {
			argv[0] = r_str_replace (argv[0], "\\ ", " ", true);
		}

		ret = posix_spawnp (&p, argv[0], &fileActions, &attr, argv, NULL);
		handle_posix_error (ret);
		posix_spawn_file_actions_destroy (&fileActions);
		r_str_argv_free (argv);
		free (_cmd);
		return p;
	}
	int ret;
	argv = r_str_argv (cmd, NULL);
	if (!argv) {
		posix_spawn_file_actions_destroy (&fileActions);
		return -1;
	}
	RRunProfile *rp = _get_run_profile (io, bits, argv);
	if (!rp) {
		r_str_argv_free (argv);
		posix_spawn_file_actions_destroy (&fileActions);
		return -1;
	}
	handle_posix_redirection (rp, &fileActions);
	if (rp->_args[0]) {
		if (!rp->_aslr) {
			ps_flags |= _POSIX_SPAWN_DISABLE_ASLR;
		}
#if __x86_64__
		if (rp->_bits == 32) {
			cpu = CPU_TYPE_I386;
		}
#endif
		(void)posix_spawnattr_setflags (&attr, ps_flags);
		posix_spawnattr_setbinpref_np (&attr, 1, &cpu, &copied);
		ret = posix_spawnp (&p, rp->_args[0], &fileActions, &attr, rp->_args, NULL);
		handle_posix_error (ret);
	}
	r_str_argv_free (argv);
	r_run_free (rp);
	posix_spawn_file_actions_destroy (&fileActions);
	return p; // -1 ?
}

Example #2

File: io_debug.c Project: jduck/radare2

// __UNIX__ (not windows)
static int fork_and_ptraceme(RIO *io, int bits, const char *cmd) {
	bool runprofile = io->runprofile && *(io->runprofile);
	char **argv;
#if __APPLE__ && !__POWERPC__
	pid_t p = -1;
	posix_spawn_file_actions_t fileActions;
	ut32 ps_flags = POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK;
	sigset_t no_signals;
	sigset_t all_signals;
	size_t copied = 1;
	cpu_type_t cpu = CPU_TYPE_ANY;
	posix_spawnattr_t attr = {0};
	posix_spawnattr_init (&attr);

	sigemptyset (&no_signals);
	sigfillset (&all_signals);
	posix_spawnattr_setsigmask (&attr, &no_signals);
	posix_spawnattr_setsigdefault (&attr, &all_signals);

	posix_spawn_file_actions_init (&fileActions);
	posix_spawn_file_actions_addinherit_np (&fileActions, STDIN_FILENO);
	posix_spawn_file_actions_addinherit_np (&fileActions, STDOUT_FILENO);
	posix_spawn_file_actions_addinherit_np (&fileActions, STDERR_FILENO);

	ps_flags |= POSIX_SPAWN_CLOEXEC_DEFAULT;
	ps_flags |= POSIX_SPAWN_START_SUSPENDED;
#define _POSIX_SPAWN_DISABLE_ASLR 0x0100
	if (!runprofile) {
		int ret, useASLR = io->aslr;
		char *_cmd = io->args
			? r_str_appendf (strdup (cmd), " %s", io->args)
			: strdup (cmd);
		argv = r_str_argv (_cmd, NULL);
		if (!argv) {
			free (_cmd);
			return -1;
		}
		if (!*argv) {
			r_str_argv_free (argv);
			free (_cmd);
			eprintf ("Invalid execvp\n");
			return -1;
		}
		if (useASLR != -1) {
			if (!useASLR) {
				ps_flags |= _POSIX_SPAWN_DISABLE_ASLR;
			}
		}
		(void)posix_spawnattr_setflags (&attr, ps_flags);
#if __x86_64__
		if (bits == 32) {
			cpu = CPU_TYPE_I386;
			// cpu |= CPU_ARCH_ABI64;
		}
#endif
		posix_spawnattr_setbinpref_np (&attr, 1, &cpu, &copied);
		{
			char *dst = r_file_readlink (argv[0]);
			if (dst) {
				argv[0] = dst;
			}
		}
		ret = posix_spawnp (&p, argv[0], NULL, &attr, argv, NULL);
		handle_posix_error (ret);
		posix_spawn_file_actions_destroy (&fileActions);
		r_str_argv_free (argv);
		free (_cmd);
		return p;
	} else {
		int ret;
		argv = r_str_argv (cmd, NULL);
		if (!argv) {
			posix_spawn_file_actions_destroy (&fileActions);
			return -1;
		}
		RRunProfile *rp = _get_run_profile (io, bits, argv);
		if (!rp) {
			r_str_argv_free (argv);
			posix_spawn_file_actions_destroy (&fileActions);
			return -1;
		}
		handle_posix_redirection (rp, &fileActions);
		if (rp->_args[0]) {
			if (!rp->_aslr) {
				ps_flags |= _POSIX_SPAWN_DISABLE_ASLR;
			}
#if __x86_64__
			if (rp->_bits == 32) {
				cpu = CPU_TYPE_I386;
			}
#endif
			(void)posix_spawnattr_setflags (&attr, ps_flags);
			posix_spawnattr_setbinpref_np (&attr, 1, &cpu, &copied);
			ret = posix_spawnp (&p, rp->_args[0], &fileActions, &attr, rp->_args, NULL);
			handle_posix_error (ret);
		}
		r_str_argv_free (argv);
		r_run_free (rp);
		posix_spawn_file_actions_destroy (&fileActions);
		return p;
	}
	posix_spawn_file_actions_destroy (&fileActions);
	return -1;
#endif
	int ret, status, child_pid;
	child_pid = r_sys_fork ();
	switch (child_pid) {
	case -1:
		perror ("fork_and_ptraceme");
		break;
	case 0:
		if (runprofile) {
			argv = r_str_argv (cmd, NULL);
			if (!argv) {
				exit(1);
			}
			RRunProfile *rp = _get_run_profile (io, bits, argv);
			if (!rp) {
				r_str_argv_free (argv);
				exit (1);
			}
			trace_me ();
			r_run_start (rp);
			r_run_free (rp);
			r_str_argv_free (argv);
			exit (1);
		} else {
			char *_cmd = io->args ?
				r_str_appendf (strdup (cmd), " %s", io->args) :
				strdup (cmd);

			trace_me ();
			argv = r_str_argv (_cmd, NULL);
			if (!argv) {
				free (_cmd);
				return -1;
			}
			if (argv && *argv) {
				int i;
				for (i = 3; i < 1024; i++)
					(void)close (i);
				execvp (argv[0], argv);
			} else {
				eprintf ("Invalid execvp\n");
			}
			r_str_argv_free (argv);
			free (_cmd);
		}
		perror ("fork_and_attach: execv");
		//printf(stderr, "[%d] %s execv failed.\n", getpid(), ps.filename);
		exit (MAGIC_EXIT); /* error */
		return 0; // invalid pid // if exit is overriden.. :)
	default:
		/* XXX: clean this dirty code */
		do {
			ret = wait (&status);
			if (ret == -1) return -1;
			if (ret != child_pid) {
				eprintf ("Wait event received by "
					"different pid %d\n", ret);
			}
		} while (ret != child_pid);
		if (WIFSTOPPED (status)) {
			eprintf ("Process with PID %d started...\n", (int)child_pid);
		}
		if (WEXITSTATUS (status) == MAGIC_EXIT) {
			child_pid = -1;
		}
		// XXX kill (pid, SIGSTOP);
		break;
	}
	return child_pid;
}