pwr_tBoolean
sect_Lock (
pwr_tStatus *sts,
sect_sHead *shp,
sect_sMutex *mp
)
{
pwr_tStatus lsts = 1;
#if defined(OS_ELN)
ELN$LOCK_AREA((AREA)shp->area, *mp);
#elif defined(OS_VMS)
{
sect_sMutexEntry *ep;
int i;
/* Get free list entry. */
while ( 1) {
i = _REMQHI(&mp->freeroot, (void **)&ep);
if ( i == 1)
continue;
else if (i == 3)
sleep(1);
else
break;
}
/* Insert in ownership list. */
while ((i = _INSQTI(ep, &mp->ownerroot)) == 1);
if (i == 0) {
/* Contention, we must wait for the resource. */
lsts = sys$ascefc(64, &shp->namedsc, 0, 0);
if (ODD(lsts)) lsts = sys$waitfr(ep->flag);
if (ODD(lsts)) lsts = sys$clref(ep->flag);
}
}
#elif defined(OS_LYNX)
while (sem_wait(mp) != 0) {
if (errno != EINTR) {
perror("sect_Lock: sem_wait ");
lsts = 2;
break;
}
}
#elif defined OS_POSIX
while (posix_sem_wait(mp) != 0) {
if (errno != EINTR) {
perror("sect_Lock: sem_wait ");
lsts = 2;
break;
}
}
#endif
errh_ReturnOrBugcheck(ODD(lsts), sts, lsts, "");
}
static int exe$synch(unsigned int efn, struct _iosb *iosb)
{
if (!iosb)
{
sys$waitfr(efn);
return SS$_NORMAL;
}
if (iosb->iosb$w_status)
{
return SS$_NORMAL;
}
again:
sys$waitfr(efn);
if (iosb->iosb$w_status & 0xff)
return iosb->iosb$w_status;
sys$clref(efn);
goto again;
}
static void
waitTime (
pwr_tTime *t
)
{
pwr_tStatus sts;
pwr_tTime now;
pwr_tTime then = *t;
char tims[24];
short len;
struct dsc$descriptor_s tims_desc = {
sizeof(tims)-1, DSC$K_DTYPE_T, DSC$K_CLASS_S,};
#if 0
subTime(&then, nowTime(&now));
#endif
if ((int)then.tv_sec > 0 || ((int)then.tv_sec == 0 && then.tv_nsec > 0)) {
#if defined OS_VMS || defined OS_ELN
int tv_nsec;
int vmstime[2];
int multiplier = -10000000; /* Used to convert 1 s to 100 ns, delta time. */
static pwr_tTime tick = {0, 10000000};
addTime(&then, &tick);
tv_nsec = -then.tv_nsec/100; /* Convert to 100 ns. */
sts = lib$emul(&then.tv_sec, &multiplier, &tv_nsec, vmstime);
#if defined OS_VMS
tims_desc.dsc$a_pointer = tims;
sys$asctim( &len, &tims_desc, vmstime, 0);
tims[len] = '\0';
printf(" %s\n", tims);
#if 0
sts = sys$clref(timerFlag);
sts = sys$setimr(timerFlag, vmstime, 0, 0, 0);
sts = sys$waitfr(timerFlag);
#endif
#elif defined OS_ELN
eln$time_string(tims, vmstime);
tims[23] = '\0';
printf(" %s\n", tims);
#if 0
ker$wait_any(&sts, NULL, vmstime);
#endif
#endif
#elif defined OS_LYNX
pwr_tTime rmt;
nanosleep(&then, &rmt);
#endif
}
}
uint4 spawn_and_bgwait(struct dsc$descriptor_s *d_cmd, struct dsc$descriptor_s *d_infile, struct dsc$descriptor_s *d_outfile,
uint4 *flags, struct dsc$descriptor_s *d_prcname, uint4 *pid, int4 *completion_status)
{
uint4 status;
uint4 flags_with_nowait = CLI$M_NOWAIT;
unsigned char ef = efn_sys_wait;
if (flags)
flags_with_nowait |= *flags;
status = lib$spawn(d_cmd, d_infile, d_outfile, &flags_with_nowait, d_prcname, pid, completion_status, &ef);
if (SS$_NORMAL == status)
status = sys$waitfr(ef);
return status;
}
main()
{
$DESCRIPTOR(tensec,"0 00:00:10.00");
sys$bintim(&tensec,&step1);
sys$setimr(50,&step1,my1,0,0);
printf("before waitfr %x\n",time(0));
sys$waitfr( 50 );
printf("after waitfr %x\n",time(0));
}
/*
* plc_LoopWait()
*
* Description:
* Returns False if a slip is detected.
* The plc_sLoopWait structure must be initialized with a call to
* plc_LoopInit.
*/
pwr_tBoolean plc_LoopWait (
plc_sLoopWait *p,
unsigned int DeltaTime /* ms */
) {
unsigned int Next, Tick, Seconds;
pwr_tVaxTime WaitTime;
pwr_tUInt32 Diff;
Next = p->LastLoop + DeltaTime / 10;
if (Next < p->LastLoop)
p->LoopOflw = 1;
p->LastLoop = Next;
plc_LoopGetVmsUpTime (&Seconds, &Tick);
if (Tick < p->LastTick)
p->TickOflw = 1;
p->LastTick = Tick;
/* Reset overflow flags if both flags have been set */
if (p->LoopOflw && p->TickOflw)
p->LoopOflw = p->TickOflw = 0;
/* Return if there is a slip */
if (!p->LoopOflw && !p->TickOflw) {
if (Tick > Next)
return FALSE;
} else if (!p->LoopOflw && p->TickOflw)
return FALSE;
Diff = (Next - Tick) * 10; /* ms */
plc_ConvMSToLI(Diff, &WaitTime);
sys$clref(p->TimerFlag);
sys$setimr(p->TimerFlag, &WaitTime, 0, 0, 0);
sys$waitfr(p->TimerFlag);
return TRUE;
}
static void
waitClock (
time_tClock diff,
int *tmo_ms
)
{
#if defined OS_VMS || defined OS_ELN
pwr_tStatus sts;
int sec;
int nsec;
int vmstime[2];
int multiplier = -10000000; /* Used to convert 1 s to 100 ns, delta time. */
sec = diff / CLK_TCK;
nsec = - (diff % CLK_TCK * 10000000 / CLK_TCK); /* Convert to 100 ns. */
sts = lib$emul(&sec, &multiplier, &nsec, vmstime);
# if defined OS_VMS
sts = sys$clref(timer_flag);
sts = sys$setimr(timer_flag, vmstime, 0, 0, 0);
sts = sys$waitfr(timer_flag);
# elif defined OS_ELN
ker$wait_any(&sts, NULL, vmstime);
# endif
#elif defined OS_POSIX
// pwr_tTime rmt;
// pwr_tTime wait;
static int tics_per_sec = 0;
if (tics_per_sec == 0) {
tics_per_sec = sysconf(_SC_CLK_TCK);
}
// printf("waitClock: %d\n", diff);
// time_ClockToD(NULL, (pwr_tDeltaTime *)&wait, diff);
*tmo_ms = diff * 1000 / tics_per_sec;
// *tmo_ms = wait.tv_sec * 1000 + wait.tv_nsec / 1000000;
// nanosleep(&wait, &rmt);
#endif
}
/*
**++
** ROUTINE: sp_close
**
** FUNCTIONAL DESCRIPTION:
**
** Close down a subprocess.
**
** RETURNS: cond_value, longword (unsigned), write only, by value
**
** PROTOTYPE:
**
** sp_close(SPHANDLE *ctxpp)
**
** IMPLICIT INPUTS: None.
**
** IMPLICIT OUTPUTS: None.
**
** COMPLETION CODES:
** SS$_NORMAL: Normal successful completion.
**
** SIDE EFFECTS: None.
**
**--
*/
unsigned int sp_close (SPHANDLE *ctxpp) {
SPHANDLE ctx;
struct SPD *spd;
unsigned int status;
ctx = *ctxpp;
/*
** Unlink the context block from our tracking queue
*/
status = sys$setast(0);
queue_remove(ctx, &ctx);
while (queue_remove(ctx->sendque.head, &spd)) free_spd(spd);
if (status == SS$_WASSET) sys$setast(1);
/*
** Delete the subprocess
*/
sys$forcex(&ctx->pid, 0, SS$_NORMAL);
sys$delprc(&ctx->pid, 0);
/*
** Wait till it actually dies
*/
sys$waitfr(ctx->termefn);
/*
** Clean up and return
*/
lib$free_ef(&ctx->termefn);
lib$free_ef(&ctx->inefn);
lib$free_ef(&ctx->outefn);
sys$dassgn(ctx->inchn);
sys$dassgn(ctx->outchn);
lib$free_vm(&ctx->bufsiz, &ctx->bufptr);
lib$free_vm(&spb_size, &ctx);
return SS$_NORMAL;
} /* sp_close */
/*
* ------------------------------------------------------
* Start hibernating by starting a timer using hiber_time
* (in msecs) and doing a pause
* ------------------------------------------------------
*/
void hiber_start(uint4 hiber)
{
int4 hiber_time[2]; /* don't have static since can be interrupted by an AST */
int status_timr, status_wait, ast_in_prog;
if (0 == hiber)
return; /* in PRO code return */
hiber_time[0] = -time_low_ms((int4)hiber);
hiber_time[1] = -time_high_ms((int4)hiber);
if (hiber_time[1] == 0)
hiber_time[1] -= 1;
if (0 != (ast_in_prog = lib$ast_in_prog()))
{ /* sleep sounder but less permanently;
* note that an AST may cause an inappropriate time to be used for another hiber_start in progress,
* but that risk should be statistically small, and the consequences (as far as known) are not important
*/
status_timr = sys$setimr(efn_timer_ast, hiber_time, 0, hiber_start_ast, 0);
assert(SS$_NORMAL == status_timr);
if (SS$_NORMAL == status_timr)
{
status_wait = sys$waitfr(efn_timer_ast);
assert(SS$_NORMAL == status_wait);
}
} else
{ /* timr->hiber should not be changed to timr->waitfr. The former waits for a wakeup or outofband event; whichever
* happens sooner will stop the hiber while the latter does not recognize outofband events (like tp timeouts)
*/
status_timr = sys$setimr(efn_hiber_start, hiber_time, wake, hiber_start, 0);
assert(SS$_NORMAL == status_timr);
if (SS$_NORMAL == status_timr)
{
sys$hiber();
sys$cantim(hiber_start, 0);
}
}
}
int
child_execute_job (char *argv, struct child *child)
{
int i;
static struct dsc$descriptor_s cmddsc;
static struct dsc$descriptor_s pnamedsc;
static struct dsc$descriptor_s ifiledsc;
static struct dsc$descriptor_s ofiledsc;
static struct dsc$descriptor_s efiledsc;
int have_redirection = 0;
int have_append = 0;
int have_newline = 0;
int spflags = CLI$M_NOWAIT;
int status;
char *cmd = alloca (strlen (argv) + 512), *p, *q;
char ifile[256], ofile[256], efile[256];
int comnamelen;
char procname[100];
int in_string;
/* Parse IO redirection. */
ifile[0] = 0;
ofile[0] = 0;
efile[0] = 0;
child->comname = NULL;
DB (DB_JOBS, ("child_execute_job (%s)\n", argv));
while (isspace ((unsigned char)*argv))
argv++;
if (*argv == 0)
return 0;
sprintf (procname, "GMAKE_%05x", getpid () & 0xfffff);
pnamedsc.dsc$w_length = strlen(procname);
pnamedsc.dsc$a_pointer = procname;
pnamedsc.dsc$b_dtype = DSC$K_DTYPE_T;
pnamedsc.dsc$b_class = DSC$K_CLASS_S;
in_string = 0;
/* Handle comments and redirection. */
for (p = argv, q = cmd; *p; p++, q++)
{
if (*p == '"')
in_string = !in_string;
if (in_string)
{
*q = *p;
continue;
}
switch (*p)
{
case '#':
*p-- = 0;
*q-- = 0;
break;
case '\\':
p++;
if (*p == '\n')
p++;
if (isspace ((unsigned char)*p))
{
do { p++; } while (isspace ((unsigned char)*p));
p--;
}
*q = *p;
break;
case '<':
p = vms_redirect (&ifiledsc, ifile, p);
*q = ' ';
have_redirection = 1;
break;
case '>':
have_redirection = 1;
if (*(p-1) == '2')
{
q--;
if (strncmp (p, ">&1", 3) == 0)
{
p += 3;
strcpy (efile, "sys$output");
efiledsc.dsc$w_length = strlen(efile);
efiledsc.dsc$a_pointer = efile;
efiledsc.dsc$b_dtype = DSC$K_DTYPE_T;
efiledsc.dsc$b_class = DSC$K_CLASS_S;
}
else
p = vms_redirect (&efiledsc, efile, p);
}
else
{
if (*(p+1) == '>')
{
have_append = 1;
p += 1;
}
p = vms_redirect (&ofiledsc, ofile, p);
}
*q = ' ';
break;
case '\n':
have_newline = 1;
default:
*q = *p;
break;
}
}
*q = *p;
while (isspace ((unsigned char)*--q))
*q = '\0';
if (strncmp (cmd, "builtin_", 8) == 0)
{
child->pid = 270163;
child->efn = 0;
child->cstatus = 1;
DB (DB_JOBS, (_("BUILTIN [%s][%s]\n"), cmd, cmd+8));
p = cmd + 8;
if ((*(p) == 'c')
&& (*(p+1) == 'd')
&& ((*(p+2) == ' ') || (*(p+2) == '\t')))
{
p += 3;
while ((*p == ' ') || (*p == '\t'))
p++;
DB (DB_JOBS, (_("BUILTIN CD %s\n"), p));
if (chdir (p))
return 0;
else
return 1;
}
else if ((*(p) == 'r')
&& (*(p+1) == 'm')
&& ((*(p+2) == ' ') || (*(p+2) == '\t')))
{
int in_arg;
/* rm */
p += 3;
while ((*p == ' ') || (*p == '\t'))
p++;
in_arg = 1;
DB (DB_JOBS, (_("BUILTIN RM %s\n"), p));
while (*p)
{
switch (*p)
{
case ' ':
case '\t':
if (in_arg)
{
*p++ = ';';
in_arg = 0;
}
break;
default:
break;
}
p++;
}
}
else
{
printf (_("Unknown builtin command '%s'\n"), cmd);
fflush (stdout);
return 0;
}
}
/* Create a *.com file if either the command is too long for
lib$spawn, or the command contains a newline, or if redirection
is desired. Forcing commands with newlines into DCLs allows to
store search lists on user mode logicals. */
if (strlen (cmd) > MAXCMDLEN
|| (have_redirection != 0)
|| (have_newline != 0))
{
FILE *outfile;
char c;
char *sep;
int alevel = 0; /* apostrophe level */
if (strlen (cmd) == 0)
{
printf (_("Error, empty command\n"));
fflush (stdout);
return 0;
}
outfile = output_tmpfile (&child->comname, "sys$scratch:CMDXXXXXX.COM");
if (outfile == 0)
pfatal_with_name (_("fopen (temporary file)"));
comnamelen = strlen (child->comname);
if (ifile[0])
{
fprintf (outfile, "$ assign/user %s sys$input\n", ifile);
DB (DB_JOBS, (_("Redirected input from %s\n"), ifile));
ifiledsc.dsc$w_length = 0;
}
if (efile[0])
{
fprintf (outfile, "$ define sys$error %s\n", efile);
DB (DB_JOBS, (_("Redirected error to %s\n"), efile));
efiledsc.dsc$w_length = 0;
}
if (ofile[0])
if (have_append)
{
fprintf (outfile, "$ set noon\n");
fprintf (outfile, "$ define sys$output %.*s\n", comnamelen-3, child->comname);
DB (DB_JOBS, (_("Append output to %s\n"), ofile));
ofiledsc.dsc$w_length = 0;
}
else
{
fprintf (outfile, "$ define sys$output %s\n", ofile);
DB (DB_JOBS, (_("Redirected output to %s\n"), ofile));
ofiledsc.dsc$w_length = 0;
}
p = sep = q = cmd;
for (c = '\n'; c; c = *q++)
{
switch (c)
{
case '\n':
/* At a newline, skip any whitespace around a leading $
from the command and issue exactly one $ into the DCL. */
while (isspace ((unsigned char)*p))
p++;
if (*p == '$')
p++;
while (isspace ((unsigned char)*p))
p++;
fwrite (p, 1, q - p, outfile);
fputc ('$', outfile);
fputc (' ', outfile);
/* Reset variables. */
p = sep = q;
break;
/* Nice places for line breaks are after strings, after
comma or space and before slash. */
case '"':
q = vms_handle_apos (q);
sep = q;
break;
case ',':
case ' ':
sep = q;
break;
case '/':
case '\0':
sep = q - 1;
break;
default:
break;
}
if (sep - p > 78)
{
/* Enough stuff for a line. */
fwrite (p, 1, sep - p, outfile);
p = sep;
if (*sep)
{
/* The command continues. */
fputc ('-', outfile);
}
fputc ('\n', outfile);
}
}
if (*p)
{
fwrite (p, 1, --q - p, outfile);
fputc ('\n', outfile);
}
if (have_append)
{
fprintf (outfile, "$ deassign sys$output ! 'f$verify(0)\n");
fprintf (outfile, "$ append:=append\n");
fprintf (outfile, "$ delete:=delete\n");
fprintf (outfile, "$ append/new %.*s %s\n", comnamelen-3, child->comname, ofile);
fprintf (outfile, "$ delete %.*s;*\n", comnamelen-3, child->comname);
DB (DB_JOBS, (_("Append %.*s and cleanup\n"), comnamelen-3, child->comname));
}
fclose (outfile);
sprintf (cmd, "$ @%s", child->comname);
DB (DB_JOBS, (_("Executing %s instead\n"), cmd));
}
cmddsc.dsc$w_length = strlen(cmd);
cmddsc.dsc$a_pointer = cmd;
cmddsc.dsc$b_dtype = DSC$K_DTYPE_T;
cmddsc.dsc$b_class = DSC$K_CLASS_S;
child->efn = 0;
while (child->efn < 32 || child->efn > 63)
{
status = lib$get_ef ((unsigned long *)&child->efn);
if (!(status & 1))
{
if (child->comname)
{
if (!ISDB (DB_JOBS))
unlink (child->comname);
free (child->comname);
}
return 0;
}
}
sys$clref (child->efn);
vms_jobsefnmask |= (1 << (child->efn - 32));
/*
LIB$SPAWN [command-string]
[,input-file]
[,output-file]
[,flags]
[,process-name]
[,process-id] [,completion-status-address] [,byte-integer-event-flag-num]
[,AST-address] [,varying-AST-argument]
[,prompt-string] [,cli] [,table]
*/
#ifndef DONTWAITFORCHILD
/*
* Code to make ctrl+c and ctrl+y working.
* The problem starts with the synchronous case where after lib$spawn is
* called any input will go to the child. But with input re-directed,
* both control characters won't make it to any of the programs, neither
* the spawning nor to the spawned one. Hence the caller needs to spawn
* with CLI$M_NOWAIT to NOT give up the input focus. A sys$waitfr
* has to follow to simulate the wanted synchronous behaviour.
* The next problem is ctrl+y which isn't caught by the crtl and
* therefore isn't converted to SIGQUIT (for a signal handler which is
* already established). The only way to catch ctrl+y, is an AST
* assigned to the input channel. But ctrl+y handling of DCL needs to be
* disabled, otherwise it will handle it. Not to mention the previous
* ctrl+y handling of DCL needs to be re-established before make exits.
* One more: At the time of LIB$SPAWN signals are blocked. SIGQUIT will
* make it to the signal handler after the child "normally" terminates.
* This isn't enough. It seems reasonable for simple command lines like
* a 'cc foobar.c' spawned in a subprocess but it is unacceptable for
* spawning make. Therefore we need to abort the process in the AST.
*
* Prior to the spawn it is checked if an AST is already set up for
* ctrl+y, if not one is set up for a channel to SYS$COMMAND. In general
* this will work except if make is run in a batch environment, but there
* nobody can press ctrl+y. During the setup the DCL handling of ctrl+y
* is disabled and an exit handler is established to re-enable it.
* If the user interrupts with ctrl+y, the assigned AST will fire, force
* an abort to the subprocess and signal SIGQUIT, which will be caught by
* the already established handler and will bring us back to common code.
* After the spawn (now /nowait) a sys$waitfr simulates the /wait and
* enables the ctrl+y be delivered to this code. And the ctrl+c too,
* which the crtl converts to SIGINT and which is caught by the common
* signal handler. Because signals were blocked before entering this code
* sys$waitfr will always complete and the SIGQUIT will be processed after
* it (after termination of the current block, somewhere in common code).
* And SIGINT too will be delayed. That is ctrl+c can only abort when the
* current command completes. Anyway it's better than nothing :-)
*/
if (!setupYAstTried)
tryToSetupYAst();
status = lib$spawn (&cmddsc, /* cmd-string */
(ifiledsc.dsc$w_length == 0)?0:&ifiledsc, /* input-file */
(ofiledsc.dsc$w_length == 0)?0:&ofiledsc, /* output-file */
&spflags, /* flags */
&pnamedsc, /* proc name */
&child->pid, &child->cstatus, &child->efn,
0, 0,
0, 0, 0);
if (status & 1)
{
status= sys$waitfr (child->efn);
vmsHandleChildTerm(child);
}
#else
status = lib$spawn (&cmddsc,
(ifiledsc.dsc$w_length == 0)?0:&ifiledsc,
(ofiledsc.dsc$w_length == 0)?0:&ofiledsc,
&spflags,
&pnamedsc,
&child->pid, &child->cstatus, &child->efn,
vmsHandleChildTerm, child,
0, 0, 0);
#endif
if (!(status & 1))
{
printf (_("Error spawning, %d\n") ,status);
fflush (stdout);
switch (status)
{
case 0x1c:
errno = EPROCLIM;
break;
default:
errno = EFAIL;
}
}
return (status & 1);
}
static int
vms_ualarm(int mseconds, int interval)
{
Alarm *a, abase;
struct item_list3 {
word length;
word code;
void *bufaddr;
void *retlenaddr;
} ;
static struct item_list3 itmlst[2];
static int first = 1;
unsigned long asten;
int iss, enabled;
if (first) {
first = 0;
itmlst[0].code = JPI$_ASTEN;
itmlst[0].length = sizeof(asten);
itmlst[0].retlenaddr = NULL;
itmlst[1].code = 0;
itmlst[1].length = 0;
itmlst[1].bufaddr = NULL;
itmlst[1].retlenaddr = NULL;
iss = lib$get_ef(&alarm_ef);
if (VMSERR(iss)) lib$signal(iss);
a0 = &alarm_base;
a0->function = UAL_NULL;
}
itmlst[0].bufaddr = &asten;
iss = sys$getjpiw(0,0,0,itmlst,0,0,0);
if (VMSERR(iss)) lib$signal(iss);
if (!(asten&0x08)) return -1;
a = &abase;
if (mseconds) {
a->function = UAL_SET;
} else {
a->function = UAL_CLEAR;
}
us_to_VMS(mseconds, a->delay);
if (interval) {
us_to_VMS(interval, a->interval);
a->repeat = 1;
} else
a->repeat = 0;
iss = sys$clref(alarm_ef);
if (VMSERR(iss)) lib$signal(iss);
iss = sys$dclast(ualarm_AST,a,0);
if (VMSERR(iss)) lib$signal(iss);
iss = sys$waitfr(alarm_ef);
if (VMSERR(iss)) lib$signal(iss);
if (a->function == UAL_ACTIVE)
return VMS_to_us(a->remain);
else
return 0;
}
pwr_tUInt32 bck_WaitBackup (
void *context,
pwr_tBoolean timeout)
{
pwr_tUInt32 sts;
pwr_tObjid objid;
pwr_tInt32 c;
pwr_tTime t;
pwr_tVaxTime tmo;
pwr_tVaxTime tmptime;
pwr_sClass_Backup_Conf *backup_confp; /* Backup_Conf object pointer */
$DESCRIPTOR (timeunitdsc, "0 0:0:0.1"); /* 0.1 second units */
int cycletime;
#ifdef OS_ELN
pwr_tInt32 res;
pwr_tVaxTime *tmop;
#endif
#ifdef OS_VMS
$DESCRIPTOR (efcname, BCK_EFC_NAME);
#endif
/*
* Initialize
*/
#ifdef OS_ELN
if (!areas_mapped) {
BCK_MAP_AREAS;
areas_mapped = TRUE;
}
#endif
/*
* Find the local Backup_Conf object
*/
sts = gdh_GetClassList (pwr_cClass_Backup_Conf, &objid);
while (ODD (sts)) {
sts = gdh_ObjidToPointer (objid, (pwr_tAddress *)&backup_confp);
if (ODD (sts)) break;
sts = gdh_GetNextObject (objid, &objid);
}
if (EVEN (sts)) return sts; /* Something wrong, quit */
/*
* Pick up argument information
*/
if (context == NULL) time_GetTime(&t);
else {
t = *(pwr_tTime *)context;
free (context);
}
#ifdef OS_ELN
tmop = NULL;
#else
timed_out = FALSE;
sts = sys$ascefc (BCK_EFC, &efcname, 0, 0);
if (EVEN (sts)) lib$signal (sts); /* BUG */
#endif
if (timeout) {
cycletime = backup_confp->CycleSlow * 2;
if (cycletime == 0) cycletime = BCK_DEFAULT_SLOW * 2;
#ifdef OS_ELN
tmo = eln$time_value (&timeunitdsc);
#else
sts = sys$bintim (&timeunitdsc, &tmo);
if (EVEN (sts)) lib$signal (sts); /* BUG, should not happen */
#endif
lib$mult_delta_time (
&cycletime, /* multiplier */
&tmo); /* delta_time (modified) */
sys$gettim (&tmptime);
lib$add_times (&tmo, &tmptime, &tmo); /* Make absolute time */
#ifdef OS_ELN
tmop = &tmo;
#else
sts = sys$setimr (BCK_WRITE_DONE, &tmo, &astrtn, 4711, 0);
if (EVEN (sts)) lib$signal (sts); /* BUG */
#endif
}
/*
* Loop, and wait for things to happen
*/
while (TRUE) {
#ifdef OS_ELN
ker$clear_event (NULL, bck_write_done);
ker$wait_any (NULL, &res, tmop, bck_write_done);
/* Check for timeout */
if (res == 0) return SS$_TIMEOUT;
#else
sts = sys$clref (BCK_WRITE_DONE);
if (EVEN (sts)) lib$signal (sts); /* BUG */
sts = sys$waitfr (BCK_WRITE_DONE);
if (EVEN (sts)) lib$signal (sts); /* BUG */
/* Check for timeout */
if (timed_out) return SS$_TIMEOUT;
#endif
/* Check if both cycles done */
if (time_Acomp(&backup_confp->ObjTimeSlow, &t) < 0)
continue;
if (time_Acomp(&backup_confp->ObjTimeFast, &t) < 0)
continue;
break;
} /* Loop */
#ifdef OS_VMS
sys$cantim (4711, 0);
#endif
return 1; /* Done. */
} /* bck_WaitBackup */
int
child_execute_job (char *argv, struct child *child)
{
int i;
static struct dsc$descriptor_s cmddsc;
static struct dsc$descriptor_s pnamedsc;
static struct dsc$descriptor_s ifiledsc;
static struct dsc$descriptor_s ofiledsc;
static struct dsc$descriptor_s efiledsc;
int have_redirection = 0;
int have_append = 0;
int have_newline = 0;
int spflags = CLI$M_NOWAIT;
int status;
char *cmd = alloca (strlen (argv) + 512), *p, *q;
char ifile[256], ofile[256], efile[256];
int comnamelen;
char procname[100];
int in_string;
/* Parse IO redirection. */
ifile[0] = 0;
ofile[0] = 0;
efile[0] = 0;
child->comname = NULL;
DB (DB_JOBS, ("child_execute_job (%s)\n", argv));
while (isspace ((unsigned char)*argv))
argv++;
if (*argv == 0)
return 0;
sprintf (procname, "GMAKE_%05x", getpid () & 0xfffff);
pnamedsc.dsc$w_length = strlen(procname);
pnamedsc.dsc$a_pointer = procname;
pnamedsc.dsc$b_dtype = DSC$K_DTYPE_T;
pnamedsc.dsc$b_class = DSC$K_CLASS_S;
in_string = 0;
/* Handle comments and redirection.
For ONESHELL, the redirection must be on the first line. Any other
redirection token is handled by DCL, that is, the pipe command with
redirection can be used, but it should not be used on the first line
for ONESHELL. */
for (p = argv, q = cmd; *p; p++, q++)
{
if (*p == '"')
in_string = !in_string;
if (in_string)
{
*q = *p;
continue;
}
switch (*p)
{
case '#':
*p-- = 0;
*q-- = 0;
break;
case '\\':
p++;
if (*p == '\n')
p++;
if (isspace ((unsigned char)*p))
{
do { p++; } while (isspace ((unsigned char)*p));
p--;
}
*q = *p;
break;
case '<':
if (have_newline==0)
{
p = vms_redirect (&ifiledsc, ifile, p);
*q = ' ';
have_redirection = 1;
}
else
*q = *p;
break;
case '>':
if (have_newline==0)
{
have_redirection = 1;
if (*(p-1) == '2')
{
q--;
if (strncmp (p, ">&1", 3) == 0)
{
p += 2;
strcpy (efile, "sys$output");
efiledsc.dsc$w_length = strlen(efile);
efiledsc.dsc$a_pointer = efile;
efiledsc.dsc$b_dtype = DSC$K_DTYPE_T;
efiledsc.dsc$b_class = DSC$K_CLASS_S;
}
else
p = vms_redirect (&efiledsc, efile, p);
}
else
{
if (*(p+1) == '>')
{
have_append = 1;
p += 1;
}
p = vms_redirect (&ofiledsc, ofile, p);
}
*q = ' ';
}
else
*q = *p;
break;
case '\n':
have_newline++;
default:
*q = *p;
break;
}
}
*q = *p;
while (isspace ((unsigned char)*--q))
*q = '\0';
#define VMS_EMPTY_ECHO "write sys$output \"\""
if (have_newline == 0)
{
/* multiple shells */
if (strncmp(cmd, "builtin_", 8) == 0)
{
child->pid = 270163;
child->efn = 0;
child->cstatus = 1;
DB(DB_JOBS, (_("BUILTIN [%s][%s]\n"), cmd, cmd + 8));
p = cmd + 8;
if ((*(p) == 'c') && (*(p + 1) == 'd')
&& ((*(p + 2) == ' ') || (*(p + 2) == '\t')))
{
p += 3;
while ((*p == ' ') || (*p == '\t'))
p++;
DB(DB_JOBS, (_("BUILTIN CD %s\n"), p));
if (chdir(p))
return 0;
else
return 1;
}
else if ((*(p) == 'e')
&& (*(p+1) == 'c')
&& (*(p+2) == 'h')
&& (*(p+3) == 'o')
&& ((*(p+4) == ' ') || (*(p+4) == '\t') || (*(p+4) == '\0')))
{
/* This is not a real builtin, it is a built in pre-processing
for the VMS/DCL echo (write sys$output) to ensure the to be echoed
string is correctly quoted (with the DCL quote character '"'). */
char *vms_echo;
p += 4;
if (*p == '\0')
cmd = VMS_EMPTY_ECHO;
else
{
p++;
while ((*p == ' ') || (*p == '\t'))
p++;
if (*p == '\0')
cmd = VMS_EMPTY_ECHO;
else
{
vms_echo = alloca(strlen(p) + sizeof VMS_EMPTY_ECHO);
strcpy(vms_echo, VMS_EMPTY_ECHO);
vms_echo[sizeof VMS_EMPTY_ECHO - 2] = '\0';
strcat(vms_echo, p);
strcat(vms_echo, "\"");
cmd = vms_echo;
}
}
DB (DB_JOBS, (_("BUILTIN ECHO %s->%s\n"), p, cmd));
}
else
{
printf(_("Unknown builtin command '%s'\n"), cmd);
fflush(stdout);
return 0;
}
}
/* expand ':' aka 'do nothing' builtin for bash and friends */
else if (cmd[0]==':' && cmd[1]=='\0')
{
cmd = "continue";
}
}
else
{
/* todo: expand ':' aka 'do nothing' builtin for bash and friends */
/* For 'one shell' expand all the
builtin_echo
to
write sys$output ""
where one is ......7 bytes longer.
At the same time ensure that the echo string is properly terminated.
For that, allocate a command buffer big enough for all possible expansions
(have_newline is the count), then expand, copy and terminate. */
char *tmp_cmd;
int nloff = 0;
int vlen = 0;
int clen = 0;
int inecho;
tmp_cmd = alloca(strlen(cmd) + (have_newline + 1) * 7 + 1);
tmp_cmd[0] = '\0';
inecho = 0;
while (cmd[nloff])
{
if (inecho)
{
if (clen < nloff - 1)
{
memcpy(&tmp_cmd[vlen], &cmd[clen], nloff - clen - 1);
vlen += nloff - clen - 1;
clen = nloff;
}
inecho = 0;
tmp_cmd[vlen] = '"';
vlen++;
tmp_cmd[vlen] = '\n';
vlen++;
}
if (strncmp(&cmd[nloff], "builtin_", 8) == 0)
{
/* ??? */
child->pid = 270163;
child->efn = 0;
child->cstatus = 1;
DB (DB_JOBS, (_("BUILTIN [%s][%s]\n"), &cmd[nloff], &cmd[nloff+8]));
p = &cmd[nloff + 8];
if ((*(p) == 'e')
&& (*(p + 1) == 'c')
&& (*(p + 2) == 'h')
&& (*(p + 3) == 'o')
&& ((*(p + 4) == ' ') || (*(p + 4) == '\t') || (*(p + 4) == '\0')))
{
if (clen < nloff - 1)
{
memcpy(&tmp_cmd[vlen], &cmd[clen], nloff - clen - 1);
vlen += nloff - clen - 1;
clen = nloff;
if (inecho)
{
inecho = 0;
tmp_cmd[vlen] = '"';
vlen++;
}
tmp_cmd[vlen] = '\n';
vlen++;
}
inecho = 1;
p += 4;
while ((*p == ' ') || (*p == '\t'))
p++;
clen = p - cmd;
memcpy(&tmp_cmd[vlen], VMS_EMPTY_ECHO,
sizeof VMS_EMPTY_ECHO - 2);
vlen += sizeof VMS_EMPTY_ECHO - 2;
}
else
{
printf (_("Builtin command is unknown or unsupported in .ONESHELL: '%s'\n"), &cmd[nloff]);
fflush(stdout);
return 0;
}
}
nloff = nextnl(cmd, nloff + 1);
}
if (clen < nloff)
{
memcpy(&tmp_cmd[vlen], &cmd[clen], nloff - clen);
vlen += nloff - clen;
clen = nloff;
if (inecho)
{
inecho = 0;
tmp_cmd[vlen] = '"';
vlen++;
}
}
tmp_cmd[vlen] = '\0';
cmd = tmp_cmd;
}
#ifdef USE_DCL_COM_FILE
/* Enforce the creation of a command file.
Then all the make environment variables are written as DCL symbol
assignments into the command file as well, so that they are visible
in the sub-process but do not affect the current process.
Further, this way DCL reads the input stream and therefore does
'forced' symbol substitution, which it doesn't do for one-liners when
they are 'lib$spawn'ed. */
#else
/* Create a *.com file if either the command is too long for
lib$spawn, or the command contains a newline, or if redirection
is desired. Forcing commands with newlines into DCLs allows to
store search lists on user mode logicals. */
if (strlen (cmd) > MAXCMDLEN
|| (have_redirection != 0)
|| (have_newline != 0))
#endif
{
FILE *outfile;
char c;
char *sep;
int alevel = 0; /* apostrophe level */
int tmpstrlen;
char *tmpstr;
if (strlen (cmd) == 0)
{
printf (_("Error, empty command\n"));
fflush (stdout);
return 0;
}
outfile = output_tmpfile (&child->comname, "sys$scratch:CMDXXXXXX.COM");
/* 012345678901234567890 */
#define TMP_OFFSET 12
#define TMP_LEN 9
if (outfile == 0)
pfatal_with_name (_("fopen (temporary file)"));
comnamelen = strlen (child->comname);
tmpstr = &child->comname[TMP_OFFSET];
tmpstrlen = TMP_LEN;
/* The whole DCL "script" is executed as one action, and it behaves as
any DCL "script", that is errors stop it but warnings do not. Usually
the command on the last line, defines the exit code. However, with
redirections there is a prolog and possibly an epilog to implement
the redirection. Both are part of the script which is actually
executed. So if the redirection encounters an error in the prolog,
the user actions will not run; if in the epilog, the user actions
ran, but output is not captured. In both error cases, the error of
redirection is passed back and not the exit code of the actions. The
user should be able to enable DCL "script" verification with "set
verify". However, the prolog and epilog commands are not shown. Also,
if output redirection is used, the verification output is redirected
into that file as well. */
fprintf (outfile, "$ %.*s_1 = \"''f$verify(0)'\"\n", tmpstrlen, tmpstr);
if (ifile[0])
{
fprintf (outfile, "$ assign/user %s sys$input\n", ifile);
DB (DB_JOBS, (_("Redirected input from %s\n"), ifile));
ifiledsc.dsc$w_length = 0;
}
if (efile[0])
{
fprintf (outfile, "$ define sys$error %s\n", efile);
DB (DB_JOBS, (_("Redirected error to %s\n"), efile));
efiledsc.dsc$w_length = 0;
}
if (ofile[0])
if (have_append)
{
fprintf (outfile, "$ define sys$output %.*s\n", comnamelen-3, child->comname);
fprintf (outfile, "$ on error then $ goto %.*s\n", tmpstrlen, tmpstr);
DB (DB_JOBS, (_("Append output to %s\n"), ofile));
ofiledsc.dsc$w_length = 0;
}
else
{
fprintf (outfile, "$ define sys$output %s\n", ofile);
DB (DB_JOBS, (_("Redirected output to %s\n"), ofile));
ofiledsc.dsc$w_length = 0;
}
#ifdef USE_DCL_COM_FILE
/* Export the child environment into DCL symbols */
if (child->environment != 0)
{
char **ep = child->environment;
char *valstr;
while (*ep != 0)
{
valstr = strchr(*ep, '=');
if (valstr == NULL)
continue;
fprintf(outfile, "$ %.*s=\"%s\"\n", valstr - *ep, *ep,
valstr + 1);
ep++;
}
}
#endif
fprintf (outfile, "$ %.*s_ = f$verify(%.*s_1)\n", tmpstrlen, tmpstr, tmpstrlen, tmpstr);
/* TODO: give 78 a name! Whether 78 is a good number is another question.
Trim, split and write the command lines.
Splitting of a command is done after 78 output characters at an
appropriate place (after strings, after comma or space and
before slash): appending a hyphen indicates that the DCL command
is being continued.
Trimming is to skip any whitespace around - including - a
leading $ from the command to ensure writing exactly one "$ "
at the beginning of the line of the output file. Trimming is
done when a new command is seen, indicated by a '\n' (outside
of a string).
The buffer so far is written and reset, when a new command is
seen, when a split was done and at the end of the command.
Only for ONESHELL there will be several commands separated by
'\n'. But there can always be multiple continuation lines. */
p = sep = q = cmd;
for (c = '\n'; c; c = *q++)
{
switch (c)
{
case '\n':
if (q > p)
{
fwrite(p, 1, q - p, outfile);
p = q;
}
fputc('$', outfile);
fputc(' ', outfile);
while (isspace((unsigned char) *p))
p++;
if (*p == '$')
p++;
while (isspace((unsigned char) *p))
p++;
q = sep = p;
break;
case '"':
q = vms_handle_apos(q);
sep = q;
break;
case ',':
case ' ':
sep = q;
break;
case '/':
case '\0':
sep = q - 1;
break;
default:
break;
}
if (sep - p > 78)
{
/* Enough stuff for a line. */
fwrite(p, 1, sep - p, outfile);
p = sep;
if (*sep)
{
/* The command continues. */
fputc('-', outfile);
}
fputc('\n', outfile);
}
}
if (*p)
{
fwrite(p, 1, --q - p, outfile);
fputc('\n', outfile);
}
if (have_append)
{
fprintf (outfile, "$ %.*s: ! 'f$verify(0)\n", tmpstrlen, tmpstr);
fprintf (outfile, "$ %.*s_2 = $status\n", tmpstrlen, tmpstr);
fprintf (outfile, "$ on error then $ exit\n");
fprintf (outfile, "$ deassign sys$output\n");
if (efile[0])
fprintf (outfile, "$ deassign sys$error\n");
fprintf (outfile, "$ append:=append\n");
fprintf (outfile, "$ delete:=delete\n");
fprintf (outfile, "$ append/new %.*s %s\n", comnamelen-3, child->comname, ofile);
fprintf (outfile, "$ delete %.*s;*\n", comnamelen-3, child->comname);
fprintf (outfile, "$ exit '%.*s_2 + (0*f$verify(%.*s_1))\n", tmpstrlen, tmpstr, tmpstrlen, tmpstr);
DB (DB_JOBS, (_("Append %.*s and cleanup\n"), comnamelen-3, child->comname));
}
fclose (outfile);
sprintf (cmd, "$ @%s", child->comname);
DB (DB_JOBS, (_("Executing %s instead\n"), cmd));
}
cmddsc.dsc$w_length = strlen(cmd);
cmddsc.dsc$a_pointer = cmd;
cmddsc.dsc$b_dtype = DSC$K_DTYPE_T;
cmddsc.dsc$b_class = DSC$K_CLASS_S;
child->efn = 0;
while (child->efn < 32 || child->efn > 63)
{
status = lib$get_ef ((unsigned long *)&child->efn);
if (!(status & 1))
{
if (child->comname)
{
if (!ISDB (DB_JOBS))
unlink (child->comname);
free (child->comname);
}
return 0;
}
}
sys$clref (child->efn);
vms_jobsefnmask |= (1 << (child->efn - 32));
/*
LIB$SPAWN [command-string]
[,input-file]
[,output-file]
[,flags]
[,process-name]
[,process-id] [,completion-status-address] [,byte-integer-event-flag-num]
[,AST-address] [,varying-AST-argument]
[,prompt-string] [,cli] [,table]
*/
#ifndef DONTWAITFORCHILD
/*
* Code to make ctrl+c and ctrl+y working.
* The problem starts with the synchronous case where after lib$spawn is
* called any input will go to the child. But with input re-directed,
* both control characters won't make it to any of the programs, neither
* the spawning nor to the spawned one. Hence the caller needs to spawn
* with CLI$M_NOWAIT to NOT give up the input focus. A sys$waitfr
* has to follow to simulate the wanted synchronous behaviour.
* The next problem is ctrl+y which isn't caught by the crtl and
* therefore isn't converted to SIGQUIT (for a signal handler which is
* already established). The only way to catch ctrl+y, is an AST
* assigned to the input channel. But ctrl+y handling of DCL needs to be
* disabled, otherwise it will handle it. Not to mention the previous
* ctrl+y handling of DCL needs to be re-established before make exits.
* One more: At the time of LIB$SPAWN signals are blocked. SIGQUIT will
* make it to the signal handler after the child "normally" terminates.
* This isn't enough. It seems reasonable for simple command lines like
* a 'cc foobar.c' spawned in a subprocess but it is unacceptable for
* spawning make. Therefore we need to abort the process in the AST.
*
* Prior to the spawn it is checked if an AST is already set up for
* ctrl+y, if not one is set up for a channel to SYS$COMMAND. In general
* this will work except if make is run in a batch environment, but there
* nobody can press ctrl+y. During the setup the DCL handling of ctrl+y
* is disabled and an exit handler is established to re-enable it.
* If the user interrupts with ctrl+y, the assigned AST will fire, force
* an abort to the subprocess and signal SIGQUIT, which will be caught by
* the already established handler and will bring us back to common code.
* After the spawn (now /nowait) a sys$waitfr simulates the /wait and
* enables the ctrl+y be delivered to this code. And the ctrl+c too,
* which the crtl converts to SIGINT and which is caught by the common
* signal handler. Because signals were blocked before entering this code
* sys$waitfr will always complete and the SIGQUIT will be processed after
* it (after termination of the current block, somewhere in common code).
* And SIGINT too will be delayed. That is ctrl+c can only abort when the
* current command completes. Anyway it's better than nothing :-)
*/
if (!setupYAstTried)
tryToSetupYAst();
status = lib$spawn (&cmddsc, /* cmd-string */
(ifiledsc.dsc$w_length == 0)?0:&ifiledsc, /* input-file */
(ofiledsc.dsc$w_length == 0)?0:&ofiledsc, /* output-file */
&spflags, /* flags */
&pnamedsc, /* proc name */
&child->pid, &child->cstatus, &child->efn,
0, 0,
0, 0, 0);
if (status & 1)
{
status= sys$waitfr (child->efn);
vmsHandleChildTerm(child);
}
#else
status = lib$spawn (&cmddsc,
(ifiledsc.dsc$w_length == 0)?0:&ifiledsc,
(ofiledsc.dsc$w_length == 0)?0:&ofiledsc,
&spflags,
&pnamedsc,
&child->pid, &child->cstatus, &child->efn,
vmsHandleChildTerm, child,
0, 0, 0);
#endif
if (!(status & 1))
{
printf (_("Error spawning, %d\n") ,status);
fflush (stdout);
switch (status)
{
case 0x1c:
errno = EPROCLIM;
break;
default:
errno = EFAIL;
}
}
return (status & 1);
}
