void
_DtTermPrimReleasePty(char *ptySlave)
{
/* this function needs to be suid root... */
(void) _DtTermPrimToggleSuidRoot(True);
(void) ReleasePty(ptySlave);
/* we now need to turn off setuid root... */
(void) _DtTermPrimToggleSuidRoot(False);
}
int
_DtTermPrimSetupPty(char *ptySlave, int ptyFd)
{
int retValue;
/* this function needs to be suid root... */
(void) _DtTermPrimToggleSuidRoot(True);
retValue = SetupPty(ptySlave, ptyFd);
/* we now need to turn off setuid root... */
(void) _DtTermPrimToggleSuidRoot(False);
return(retValue);
}
/*
** NOTE:
** Setcsmap() only operates on STDIN, so we have to do some
** munging around to map the pty to STDIN in order to get
** the desired result. This may seem wasteful, but it
** makes it easier to encapsulate the OS dependencies in
** this function.
*/
if (pty != 0)
{
oldStdin = fcntl(0, F_DUPFD, 1);
(void) close(0);
(void) dup(pty);
}
sprintf(path, "%s%s", CSMAP_DIR, nl_langinfo(CODESET));
if(access(path, E_ACC|R_ACC) == 0)
{
setcsmap(path);
}
if (pty != 0)
{
(void) close(0);
if (oldStdin >= 0)
{
(void) dup(oldStdin);
(void) close(oldStdin);
}
}
#endif /* (USE_SETCSMAP) */
}
#if defined(USE_TIOCCONS)
#ifndef CONSOLE_DEVICE
#define CONSOLE_DEVICE "/dev/console"
#endif /* CONSOLE_DEVICE */
void _DtTermPrimPtyConsoleModeEnable(int pty)
{
struct stat st;
int one = 1;
/* check to see if we are the owner of the device... */
if (!stat(CONSOLE_DEVICE, &st)) {
/* stat succeeded... */
if (st.st_uid == getuid()) {
/* we are the owner, check the access... */
if (!access(CONSOLE_DEVICE, R_OK | W_OK)) {
/* and we can read/write it... */
/* we need to be setuid root... */
(void) _DtTermPrimToggleSuidRoot(True);
if (ioctl(pty, TIOCCONS, &one)) {
/* failure, errno was set... */
(void) perror(CONSOLE_DEVICE);
(void) fprintf(stderr,
"attempt to make tty the console failed\n");
}
/* we no longer need to be suid root... */
(void) _DtTermPrimToggleSuidRoot(False);
} else {
/* we can't read/write it... */
(void) perror(CONSOLE_DEVICE);
(void) fprintf(stderr, "-C console access denied\n");
}
} else {
/* we are not the owner -- return an access owner... */
errno = EACCES;
(void) perror(CONSOLE_DEVICE);
(void) fprintf(stderr, "-C console access denied\n");
}
} else {
/* we were unable to stat the file, errno is already set,
* failure...
*/
(void) perror(CONSOLE_DEVICE);
(void) fprintf(stderr, "-C console access denied\n");
}
}
static int
GetPty(char **ptySlave, char **ptyMaster)
{
char *c;
int ptyFd;
int ttyFd;
*ptyMaster = malloc(strlen(PTY_CLONE_DEVICE) + 1);
(void) strcpy(*ptyMaster, PTY_CLONE_DEVICE);
if (isDebugFSet('p', 10)) {
#ifdef BBA
#pragma BBA_IGNORE
#endif /*BBA*/
return(-1);
}
if ((ptyFd = open(*ptyMaster, O_RDWR, 0))) {
_Xttynameparams tty_buf;
#if defined(linux)
if (c = _XTtyname(ptyFd)) {
#else
if (c = _XTtyname(ptyFd, tty_buf)) {
#endif
*ptySlave = malloc(strlen(c) + 1);
(void) strcpy(*ptySlave, c);
if ((ttyFd = open(*ptySlave, O_RDWR | O_NOCTTY, 0)) < 0) {
/* failure... */
(void) perror(*ptySlave);
(void) close(ptyFd);
} else {
/* success...
*/
/* close off the pty slave... */
(void) close(ttyFd);
/* fix the owner, mode, and group... */
#ifdef HP_ARCHITECTURE
{
struct group *grp;
gid_t gid;
_Xgetgrparams grp_buf;
if (grp = _XGetgrnam("tty", grp_buf)) {
gid = grp->gr_gid;
} else {
gid = 0;
}
(void) endgrent();
(void) chown(*ptySlave, getuid(), gid);
(void) chmod(*ptySlave, 0620);
}
#else /* HP_ARCHITECTURE */
(void) chown(*ptySlave, getuid(), getgid());
(void) chmod(*ptySlave, 0622);
#endif /* HP_ARCHITECTURE */
/* pty master and slave names are already set. Return
* the file descriptor...
*/
return(ptyFd);
}
} else {
/* ttyname on the pty master failed. This should not happen!... */
(void) perror("ttyname");
(void) close(ptyFd);
}
} else {
(void) perror(*ptyMaster);
}
return(-1);
}
/* this is a public wrapper around the previous function that runs the
* previous function setuid root...
*/
int
_DtTermPrimGetPty(char **ptySlave, char **ptyMaster)
{
int retValue;
/* this function needs to be suid root... */
(void) _DtTermPrimToggleSuidRoot(True);
retValue = GetPty(ptySlave, ptyMaster);
/* we now need to turn off setuid root... */
(void) _DtTermPrimToggleSuidRoot(False);
return(retValue);
}
