From: Laurent Bigonville <bigon@xxxxxxxx>
---
policycoreutils/run_init/open_init_pty.c | 399 ------------------------------
1 file changed, 399 deletions(-)
delete mode 100644 policycoreutils/run_init/open_init_pty.c
diff --git a/policycoreutils/run_init/open_init_pty.c b/policycoreutils/run_init/open_init_pty.c
deleted file mode 100644
index 4f04e72..0000000
--- a/policycoreutils/run_init/open_init_pty.c
+++ /dev/null
@@ -1,399 +0,0 @@
-/* -*- Mode: C -*-
- * open_init_pty.c ---
- * Author : Manoj Srivastava ( srivasta@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx )
- * Created On : Fri Jan 14 10:48:28 2005
- * Created On Node : glaurung.internal.golden-gryphon.com
- * Last Modified By : Manoj Srivastava
- * Last Modified On : Thu Sep 15 00:57:00 2005
- * Last Machine Used: glaurung.internal.golden-gryphon.com
- * Update Count : 92
- * Status : Unknown, Use with caution!
- * HISTORY :
- * Description :
- *
- * Distributed under the terms of the GNU General Public License v2
- *
- * open_init_pty
- *
- * SYNOPSIS:
- *
- * This program allows a systems administrator to execute daemons
- * which need to work in the initrc domain, and which need to have
- * pty's as system_u:system_r:initrc_t
- *
- * USAGE:
- *
- * * arch-tag: a5583d39-72b9-4cdf-ba1b-5678ea4cbe20
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <signal.h>
-#include <errno.h>
-
-#include <sysexits.h>
-
-#include <pty.h> /* for openpty and forkpty */
-#include <utmp.h> /* for login_tty */
-#include <termios.h>
-#include <fcntl.h>
-
-#include <sys/select.h>
-
-static struct termios saved_termios;
-static int saved_fd = -1;
-static enum { RESET, RAW, CBREAK } tty_state = RESET;
-
-static int tty_semi_raw(int fd)
-{
- struct termios buf;
-
- if (tty_state == RESET) {
- if (tcgetattr(fd, &saved_termios) < 0) {
- return -1;
- }
- }
-
- buf = saved_termios;
- /*
- * echo off, canonical mode off, extended input processing off,
- * signal chars off
- */
- buf.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
- /*
- * no SIGINT on break, CR-to-NL off, input parity check off, do not
- * strip 8th bit on input,output flow control off
- */
- buf.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
- /* Clear size bits, parity checking off */
- buf.c_cflag &= ~(CSIZE | PARENB);
- /* set 8 bits/char */
- buf.c_cflag |= CS8;
- /* Output processing off
- buf.c_oflag &= ~(OPOST); */
-
- buf.c_cc[VMIN] = 1; /* one byte at a time, no timer */
- buf.c_cc[VTIME] = 0;
- if (tcsetattr(fd, TCSANOW, &buf) < 0) {
- return -1;
- } /* end of if(tcsetattr(fileno(stdin), TCSANOW, &buf) < 0) */
- tty_state = RAW;
- saved_fd = fd;
- return 0;
-}
-
-void tty_atexit(void)
-{
- if (tty_state != CBREAK && tty_state != RAW) {
- return;
- }
-
- if (tcsetattr(saved_fd, TCSANOW, &saved_termios) < 0) {
- return;
- } /* end of if(tcsetattr(fileno(stdin), TCSANOW, &buf) < 0) */
- tty_state = RESET;
- return;
-}
-
-int main(int argc, char *argv[])
-{
- pid_t child_pid;
- struct termios tty_attr;
- struct winsize window_size;
- int pty_master;
- int retval = 0;
-
- /* for select */
- fd_set readfds;
- fd_set writefds;
- fd_set exceptfds;
-
- int err_count = 0;
-
- /* for sigtimedwait() */
- struct timespec timeout;
- char buf[16384];
-
- if (argc == 1) {
- printf("usage: %s PROGRAM [ARGS]...\n", argv[0]);
- exit(1);
- }
-
- sigset_t signal_set;
- siginfo_t signalinfo;
-
- /* set up SIGCHLD */
- sigemptyset(&signal_set); /* no signals */
- sigaddset(&signal_set, SIGCHLD); /* Add sig child */
- sigprocmask(SIG_BLOCK, &signal_set, NULL); /* Block the signal */
-
- /* Set both to 0, so sigtimed wait just does a poll */
- timeout.tv_sec = 0;
- timeout.tv_nsec = 0;
-
- if (isatty(fileno(stdin))) {
- /* get terminal parameters associated with stdout */
- if (tcgetattr(fileno(stdout), &tty_attr) < 0) {
- perror("tcgetattr:");
- exit(EX_OSERR);
- }
-
- /* end of if(tcsetattr(&tty_attr)) */
- /* get window size */
- if (ioctl(fileno(stdout), TIOCGWINSZ, &window_size) < 0) {
- perror("ioctl stdout:");
- exit(1);
- }
-
- child_pid = forkpty(&pty_master, NULL, &tty_attr, &window_size);
- } /* end of if(isatty(fileno(stdin))) */
- else { /* not interactive */
- child_pid = forkpty(&pty_master, NULL, NULL, NULL);
- }
-
- if (child_pid < 0) {
- perror("forkpty():");
- fflush(stdout);
- fflush(stderr);
- exit(EX_OSERR);
- } /* end of if(child_pid < 0) */
- if (child_pid == 0) {
- /* in the child */
- struct termios s_tty_attr;
- if (tcgetattr(fileno(stdin), &s_tty_attr)) {
- perror("Child:");
- fflush(stdout);
- fflush(stderr);
- exit(EXIT_FAILURE);
- }
- /* Turn off echo */
- s_tty_attr.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL);
- /* Also turn of NL to CR?LF on output */
- s_tty_attr.c_oflag &= ~(ONLCR);
- if (tcsetattr(fileno(stdin), TCSANOW, &s_tty_attr)) {
- perror("Child:");
- exit(EXIT_FAILURE);
- }
- { /* There is no reason to block sigchild for the process we
- shall exec here */
- sigset_t chld_signal_set;
- /* release SIGCHLD */
- sigemptyset(&chld_signal_set); /* no signals */
- sigaddset(&chld_signal_set, SIGCHLD); /* Add sig child */
- sigprocmask(SIG_UNBLOCK, &chld_signal_set, NULL); /* Unblock the signal */
- }
-
- if (execvp(argv[1], argv + 1)) {
- perror("Exec:");
- fflush(stdout);
- fflush(stderr);
- exit(EXIT_FAILURE);
- }
- }
-
- /* end of if(child_pid == 0) */
- /*
- * OK. Prepare to handle IO from the child. We need to transfer
- * everything from the child's stdout to ours.
- */
- FD_ZERO(&readfds);
- FD_ZERO(&writefds);
- FD_ZERO(&exceptfds);
-
- /*
- * Read current file descriptor flags, preparing to do non blocking reads
- */
- retval = fcntl(pty_master, F_GETFL);
- if (retval < 0) {
- perror("fcntl_get");
- fflush(stdout);
- fflush(stderr);
- exit(EX_IOERR);
- }
-
- /* Set the connection to be non-blocking */
- if (fcntl(pty_master, F_SETFL, retval | O_NONBLOCK) < 0) {
- perror("fcnt_setFlag_nonblock:");
- fflush(stdout);
- fflush(stderr);
- exit(1);
- }
-
- FD_SET(pty_master, &readfds);
- FD_SET(pty_master, &writefds);
- FD_SET(fileno(stdin), &readfds);
- if (isatty(fileno(stdin))) {
- if (tty_semi_raw(fileno(stdin)) < 0) {
- perror("Error: settingraw mode:");
- fflush(stdout);
- fflush(stderr);
- } /* end of if(tty_raw(fileno(stdin)) < 0) */
- if (atexit(tty_atexit) < 0) {
- perror("Atexit setup:");
- fflush(stdout);
- fflush(stderr);
- } /* end of if(atexit(tty_atexit) < 0) */
- }
-
- /* ignore return from nice, but lower our priority */
- int ignore __attribute__ ((unused)) = nice(19);
-
- /* while no signal, we loop around */
- int done = 0;
- while (!done) {
- struct timeval interval;
- fd_set t_readfds;
- fd_set t_writefds;
- fd_set t_exceptfds;
- /*
- * We still use a blocked signal, and check for SIGCHLD every
- * loop, since waiting infinitely did not really help the load
- * when running, say, top.
- */
- interval.tv_sec = 0;
- interval.tv_usec = 200000; /* so, check for signals every 200 milli
- seconds */
-
- t_readfds = readfds;
- t_writefds = writefds;
- t_exceptfds = exceptfds;
-
- /* check for the signal */
- retval = sigtimedwait(&signal_set, &signalinfo, &timeout);
-
- if (retval == SIGCHLD) {
- /* child terminated */
- done = 1; /* in case they do not close off their
- file descriptors */
- } else {
- if (retval < 0) {
- if (errno != EAGAIN) {
- perror("sigtimedwait");
- fflush(stdout);
- fflush(stderr);
- exit(EX_IOERR);
- } else {
- /* No signal in set was delivered within the timeout period specified */
- }
- }
- } /* end of else */
-
- if (select
- (pty_master + 1, &t_readfds, &t_writefds, &t_exceptfds,
- &interval) < 0) {
- perror("Select:");
- fflush(stdout);
- fflush(stderr);
- exit(EX_IOERR);
- }
-
- if (FD_ISSET(pty_master, &t_readfds)) {
- retval = read(pty_master, buf, (unsigned int)16384);
- if (retval < 0) {
- if (errno != EINTR && errno != EAGAIN) { /* Nothing left to read? */
- fflush(stdout);
- fflush(stderr);
- /* fprintf(stderr, "DEBUG: %d: Nothing left to read?\n", __LINE__); */
- exit(EXIT_SUCCESS);
- } /* end of else */
- } /* end of if(retval < 0) */
- else {
- if (retval == 0) {
- if (++err_count > 5) { /* child closed connection */
- fflush(stdout);
- fflush(stderr);
- /*fprintf(stderr, "DEBUG: %d: child closed connection?\n", __LINE__); */
- exit(EXIT_SUCCESS);
- }
- } /* end of if(retval == 0) */
- else {
- ssize_t nleft = retval;
- ssize_t nwritten = 0;
- char *ptr = buf;
- while (nleft > 0) {
- if ((nwritten =
- write(fileno(stdout), ptr,
- (unsigned int)nleft))
- <= 0) {
- if (errno == EINTR) {
- nwritten = 0;
- } /* end of if(errno == EINTR) */
- else {
- perror("write");
- fflush(stdout);
- fflush(stderr);
- exit(EXIT_SUCCESS);
- } /* end of else */
- } /* end of if((nwritten = write(sockfd, ptr, nleft)) <= 0) */
- nleft -= nwritten;
- ptr += nwritten;
- } /* end of while(nleft > 0) */
-
- /* fprintf(stderr, "DEBUG: %d: wrote %d\n", __LINE__, retval); */
- fflush(stdout);
- } /* end of else */
- } /* end of else */
- }
- if (FD_ISSET(fileno(stdin), &t_readfds)) {
- if (FD_ISSET(pty_master, &t_writefds)) {
- retval =
- read(fileno(stdin), buf,
- (unsigned int)16384);
- if (retval < 0) {
- if (errno != EINTR && errno != EAGAIN) { /* Nothing left to read? */
- fflush(stdout);
- fflush(stderr);
- exit(EXIT_SUCCESS);
- } /* end of else */
- } /* end of if(retval < 0) */
- else {
- if (retval == 0) {
- if (++err_count > 5) { /* lost controlling tty */
- fflush(stdout);
- fflush(stderr);
- exit(EXIT_SUCCESS);
- }
- } /* end of if(retval == 0) */
- else {
- ssize_t nleft = retval;
- ssize_t nwritten = 0;
- char *ptr = buf;
- while (nleft > 0) {
- if ((nwritten =
- write(pty_master,
- ptr,
- (unsigned
- int)nleft))
- <= 0) {
- if (errno ==
- EINTR) {
- nwritten
- = 0;
- } /* end of if(errno == EINTR) */
- else {
- perror
- ("write");
- fflush
- (stdout);
- fflush
- (stderr);
- exit(EXIT_SUCCESS);
- } /* end of else */
- } /* end of if((nwritten = write(sockfd, ptr, nleft)) <= 0) */
- nleft -= nwritten;
- ptr += nwritten;
- } /* end of while(nleft > 0) */
-
- fflush(stdout);
- } /* end of else */
- } /* end of else */
- } /* end of if(FD_ISSET(pty_master, &writefds)) */
- } /* something to read on stdin */
- } /* Loop */
-
- fflush(stdout);
- fflush(stderr);
-
- exit(EXIT_SUCCESS);
-} /* end of main() */
--
1.7.10
--
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