Exemplo n.º 1
0
/*
**	bye_kids(exit-condition)
**
**	Shutdown the terminal, clear the signals, and exit
*/
void
bye_kids(int n)
{				/* reset the tty and exit */
	ignoresig();
	if (send_reset_init) {
		if (exit_ca_mode) {
			tc_putp(exit_ca_mode);
		}
		if (initial_stty_query(TTY_XON_XOFF)) {
			if (enter_xon_mode) {
				tc_putp(enter_xon_mode);
			}
		} else if (exit_xon_mode) {
			tc_putp(exit_xon_mode);
		}
	}
	if (debug_fp) {
		fclose(debug_fp);
	}
	if (log_fp) {
		fclose(log_fp);
	}
	tty_reset();
	fclose(stdin);
	fclose(stdout);
	fclose(stderr);
	if (not_a_tty)
		sleep(1);
	exit(n);
}
Exemplo n.º 2
0
static RETSIGTYPE 
onintr(int sig GCC_UNUSED)
{
	ignoresig();
	tty_reset();
	exit(1);
}
Exemplo n.º 3
0
/*
 * Edit a message by writing the message into a funnily-named file
 * (which should not exist) and forking an editor on it.
 * We get the editor from the stuff above.
 */
int
edit1(int *msgvec, int type)
{
	int c, i;
	FILE *fp;
	struct sigaction oact;
	sigset_t oset;
	struct message *mp;
	off_t size;

	/*
	 * Deal with each message to be edited . . .
	 */
	for (i = 0; msgvec[i] && i < msgCount; i++) {
		if (i > 0) {
			char buf[100];
			char *p;

			printf("Edit message %d [ynq]? ", msgvec[i]);
			if (fgets(buf, sizeof(buf), stdin) == NULL)
				break;
			for (p = buf; *p == ' ' || *p == '\t'; p++)
				;
			if (*p == 'q')
				break;
			if (*p == 'n')
				continue;
		}
		dot = mp = &message[msgvec[i] - 1];
		touch(mp);
		(void)ignoresig(SIGINT, &oact, &oset);
		fp = run_editor(setinput(mp), (off_t)mp->m_size, type, readonly);
		if (fp != NULL) {
			(void)fseek(otf, 0L, SEEK_END);
			size = ftell(otf);
			mp->m_block = blockof(size);
			mp->m_offset = offsetof(size);
			mp->m_size = fsize(fp);
			mp->m_lines = 0;
			mp->m_flag |= MODIFY;
			rewind(fp);
			while ((c = getc(fp)) != EOF) {
				if (c == '\n')
					mp->m_lines++;
				if (putc(c, otf) == EOF)
					break;
			}
			if (ferror(otf))
				warn("%s", tmpdir);
			(void)Fclose(fp);
		}
		(void)sigprocmask(SIG_SETMASK, &oset, NULL);
		(void)sigaction(SIGINT, &oact, NULL);
	}
	return(0);
}
Exemplo n.º 4
0
/*ARGSUSED*/
int
dosh(void *v)
{
	char *shell;
	struct sigaction oact;
	sigset_t oset;

	shell = value("SHELL");
	(void)ignoresig(SIGINT, &oact, &oset);
	(void)run_command(shell, 0, 0, -1, NULL, NULL, NULL);
	(void)sigprocmask(SIG_SETMASK, &oset, NULL);
	(void)sigaction(SIGINT, &oact, NULL);
	putchar('\n');
	return(0);
}
Exemplo n.º 5
0
/*
 * Edit the message being collected on fp.
 * On return, make the edit file the new temp file.
 */
void
mesedit(FILE *fp, int c)
{
	FILE *nf;
	struct sigaction oact;
	sigset_t oset;

	(void)ignoresig(SIGINT, &oact, &oset);
	nf = run_editor(fp, (off_t)-1, c, 0);
	if (nf != NULL) {
		fseek(nf, 0L, SEEK_END);
		collf = nf;
		(void)Fclose(fp);
	}
	(void)sigprocmask(SIG_SETMASK, &oset, NULL);
	(void)sigaction(SIGINT, &oact, NULL);
}
Exemplo n.º 6
0
/*
 * Pipe the message through the command.
 * Old message is on stdin of command;
 * New message collected from stdout.
 * Sh -c must return 0 to accept the new message.
 */
void
mespipe(FILE *fp, char *cmd)
{
	FILE *nf;
	int fd;
	char *shell, tempname[PATHSIZE];
	struct sigaction oact;
	sigset_t oset;

	(void)ignoresig(SIGINT, &oact, &oset);
	(void)snprintf(tempname, sizeof(tempname),
	    "%s/mail.ReXXXXXXXXXX", tmpdir);
	if ((fd = mkstemp(tempname)) == -1 ||
	    (nf = Fdopen(fd, "w+")) == NULL) {
		warn("%s", tempname);
		goto out;
	}
	(void)rm(tempname);
	/*
	 * stdin = current message.
	 * stdout = new message.
	 */
	shell = value("SHELL");
	if (run_command(shell,
	    0, fileno(fp), fileno(nf), "-c", cmd, NULL) < 0) {
		(void)Fclose(nf);
		goto out;
	}
	if (fsize(nf) == 0) {
		fprintf(stderr, "No bytes from \"%s\" !?\n", cmd);
		(void)Fclose(nf);
		goto out;
	}
	/*
	 * Take new files.
	 */
	(void)fseek(nf, 0L, SEEK_END);
	collf = nf;
	(void)Fclose(fp);
out:
	(void)sigprocmask(SIG_SETMASK, &oset, NULL);
	(void)sigaction(SIGINT, &oact, NULL);
}
Exemplo n.º 7
0
/*
 * Process a shell escape by saving signals, ignoring signals,
 * and forking a sh -c
 */
int
shell(void *v)
{
	char *str = v;
	char *shell;
	char cmd[BUFSIZ];
	struct sigaction oact;
	sigset_t oset;

	(void)ignoresig(SIGINT, &oact, &oset);
	(void)strlcpy(cmd, str, sizeof(cmd));
	if (bangexp(cmd, sizeof(cmd)) < 0)
		return(1);
	shell = value("SHELL");
	(void)run_command(shell, 0, 0, -1, "-c", cmd, NULL);
	(void)sigprocmask(SIG_SETMASK, &oset, NULL);
	(void)sigaction(SIGINT, &oact, NULL);
	puts("!");
	return(0);
}
Exemplo n.º 8
0
void
forkchild(struct job *jp, union node *n, int mode, int vforked)
{
	int wasroot;
	int pgrp;
	const char *devnull = _PATH_DEVNULL;
	const char *nullerr = "Can't open %s";

	wasroot = rootshell;
	TRACE(("Child shell %d\n", getpid()));
	if (!vforked)
		rootshell = 0;

	closescript(vforked);
	clear_traps(vforked);
#if JOBS
	if (!vforked)
		jobctl = 0;		/* do job control only in root shell */
	if (wasroot && mode != FORK_NOJOB && mflag) {
		if (jp == NULL || jp->nprocs == 0)
			pgrp = getpid();
		else
			pgrp = jp->ps[0].pid;
		/* This can fail because we are doing it in the parent also */
		(void)setpgid(0, pgrp);
		if (mode == FORK_FG) {
			if (tcsetpgrp(ttyfd, pgrp) == -1)
				error("Cannot set tty process group (%s) at %d",
				    strerror(errno), __LINE__);
		}
		setsignal(SIGTSTP, vforked);
		setsignal(SIGTTOU, vforked);
	} else if (mode == FORK_BG) {
		ignoresig(SIGINT, vforked);
		ignoresig(SIGQUIT, vforked);
		if ((jp == NULL || jp->nprocs == 0) &&
		    ! fd0_redirected_p ()) {
			close(0);
			if (open(devnull, O_RDONLY) != 0)
				error(nullerr, devnull);
		}
	}
#else
	if (mode == FORK_BG) {
		ignoresig(SIGINT, vforked);
		ignoresig(SIGQUIT, vforked);
		if ((jp == NULL || jp->nprocs == 0) &&
		    ! fd0_redirected_p ()) {
			close(0);
			if (open(devnull, O_RDONLY) != 0)
				error(nullerr, devnull);
		}
	}
#endif
	if (wasroot && iflag) {
		setsignal(SIGINT, vforked);
		setsignal(SIGQUIT, vforked);
		setsignal(SIGTERM, vforked);
	}

	if (!vforked)
		jobs_invalid = 1;
}