/*
* Handle all error exit scenarios for the shell. This includes
* setting the exit status to the appropriate value according to
* es and causing the shell to exit if appropriate. This function
* is called by err() and may or may not return.
*/
static void
sh_errexit(int es)
{
#ifdef DEBUG
fd_print(FD2,"sh_errexit: getmypid() == %d, es == %d;\n",getmypid(),es);
#endif
status = es;
if (prompt == NULL) {
(void)lseek(FD0, (off_t)0, SEEK_END);
EXIT(status);
}
if (getpid() != getmypid())
_exit(status);
}
char *lpm_getmsg (void)
{
static xmesg rc;
int arg = getmypid ();
*rc = 0;
return lpm_call (LPMGETMSG, (char *)&arg, (char *)&rc) && *rc ? rc : NULL;
}
int lpm_pque (int pri, char *prog, char *msg)
{
LpmQue arg;
setstring (arg.name, prog);
setstring (arg.mesg, msg);
arg.pid = getmypid ();
arg.pri = pri;
lpm_call_int (LPMQUE);
}
int lpm_verify (void)
{
int arg = getmypid ();
ulong rc = 0;
if (!lpm_call (LPMVERIFY, (char *)&arg, (char *)&rc))
return LpmRpcError == RPC_PROCUNAVAIL;
if (lpm_nom != rc)
return 0;
return 1;
}
/*
* Initialize the shell.
*/
static void
sh_init(const char *av0p)
{
struct stat sb;
int i;
setmyerrexit(&sh_errexit);
setmyname(av0p);
setmypid(getpid());
/*
* Set-ID execution is not supported.
*/
if (geteuid() != getuid() || getegid() != getgid())
err(SH_ERR, FMT1S, ERR_SETID);
/*
* Save the process ID of the shell as a 5-digit ASCII
* string (apid). Each occurrence of `$$' in a command
* line is substituted w/ the value of apid.
*/
i = snprintf(apid, sizeof(apid), "%05u", (unsigned)getmypid());
if (i < 0 || i >= (int)sizeof(apid))
*apid = EOS;
/*
* Fail if any of the descriptors 0, 1, or 2 is not open.
*/
for (i = 0; i < 3; i++)
if (fstat(i, &sb) == -1)
err(SH_ERR, "%u: %s\n", (unsigned)i, strerror(errno));
/*
* Set the SIGCHLD signal to its default action.
* Correct operation of the shell requires that zombies
* be created for its children when they terminate.
*/
(void)sasignal(SIGCHLD, SIG_DFL);
}
unsigned int lpm_query (int nom, int rev)
{
LpmQry arg;
unsigned int rc = 0;
arg.pid = getmypid ();
arg.nom = nom;
arg.rev = rev;
if (rev == LPM_Option)
if (!lpm_optinrange (nom))
return 0;
if (!lpm_call (LPMQUERY, (char *)&arg, (char *)&rc))
return 0;
else if (rev == LPM_Option)
return rc;
else if (rc)
{
lpm_setbit (lpm_nom, nom);
return rc;
}
else
return 0;
}
int lpm_bye (void)
{
int arg = getmypid ();
lpm_call_int (LPMBYE);
}
int lpm_init (void)
{
int arg = getmypid ();
lpm_call_int (LPMINIT);
}
