static void
log_access (const char *flavor)
{
if (! ISDB (DB_JOBS))
return;
/* All the other debugging messages go to stdout,
but we write this one to stderr because it might be
run in a child fork whose stdout is piped. */
fprintf (stderr, _("%s: user %lu (real %lu), group %lu (real %lu)\n"),
flavor, (unsigned long) geteuid (), (unsigned long) getuid (),
(unsigned long) getegid (), (unsigned long) getgid ());
fflush (stderr);
}
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$w_length == 0)?0:&ofiledsc,
&spflags,
&pnamedsc,
&child->pid, &child->cstatus, &child->efn,
vmsHandleChildTerm, child,
0, 0, 0);
#endif
if (!(status & 1))
{
printf (_("Error spawning, %d\n") ,status);
fflush (stdout);
switch (status)
{
case 0x1c:
errno = EPROCLIM;
break;
default:
errno = EFAIL;
}
}
return (status & 1);
}
/* This is called at main or AST level. It is at AST level for DONTWAITFORCHILD
and at main level otherwise. In any case it is called when a child process
terminated. At AST level it won't get interrupted by anything except a
inner mode level AST.
*/
int
vmsHandleChildTerm(struct child *child)
{
int status;
register struct child *lastc, *c;
int child_failed;
vms_jobsefnmask &= ~(1 << (child->efn - 32));
lib$free_ef (&child->efn);
if (child->comname)
{
if (!ISDB (DB_JOBS) && !ctrlYPressed)
unlink (child->comname);
free (child->comname);
}
(void) sigblock (fatal_signal_mask);
child_failed = !(child->cstatus & 1 || ((child->cstatus & 7) == 0));
/* Search for a child matching the deceased one. */
lastc = 0;
#if defined(RECURSIVEJOBS) /* I've had problems with recursive stuff and process handling */
for (c = children; c != 0 && c != child; lastc = c, c = c->next)
;
#else
c = child;
#endif
if (child_failed && !c->noerror && !ignore_errors_flag)
{
/* The commands failed. Write an error message,
delete non-precious targets, and abort. */
child_error (c, c->cstatus, 0, 0, 0);
c->file->update_status = us_failed;
delete_child_targets (c);
}
else
{
if (child_failed)
{
/* The commands failed, but we don't care. */
child_error (c, c->cstatus, 0, 0, 1);
child_failed = 0;
}
#if defined(RECURSIVEJOBS) /* I've had problems with recursive stuff and process handling */
/* If there are more commands to run, try to start them. */
start_job (c);
switch (c->file->command_state)
{
case cs_running:
/* Successfully started. */
break;
case cs_finished:
if (c->file->update_status != us_success)
/* We failed to start the commands. */
delete_child_targets (c);
break;
default:
OS (error, NILF,
_("internal error: '%s' command_state"), c->file->name);
abort ();
break;
}
#endif /* RECURSIVEJOBS */
}
/* Set the state flag to say the commands have finished. */
c->file->command_state = cs_finished;
notice_finished_file (c->file);
#if defined(RECURSIVEJOBS) /* I've had problems with recursive stuff and process handling */
/* Remove the child from the chain and free it. */
if (lastc == 0)
children = c->next;
else
lastc->next = c->next;
free_child (c);
#endif /* RECURSIVEJOBS */
/* There is now another slot open. */
if (job_slots_used > 0)
--job_slots_used;
/* If the job failed, and the -k flag was not given, die. */
if (child_failed && !keep_going_flag)
die (EXIT_FAILURE);
(void) sigsetmask (sigblock (0) & ~(fatal_signal_mask));
return 1;
}
static int
update_file_1 (struct file *file, unsigned int depth)
{
FILE_TIMESTAMP this_mtime;
int noexist, must_make, deps_changed;
int dep_status = 0;
struct file *ofile;
struct dep *d, *ad;
struct dep amake;
int running = 0;
DBF (DB_VERBOSE, _("Considering target file '%s'.\n"));
if (file->updated)
{
if (file->update_status > 0)
{
DBF (DB_VERBOSE,
_("Recently tried and failed to update file '%s'.\n"));
/* If the file we tried to make is marked no_diag then no message
was printed about it when it failed during the makefile rebuild.
If we're trying to build it again in the normal rebuild, print a
message now. */
if (file->no_diag && !file->dontcare)
complain (file);
return file->update_status;
}
DBF (DB_VERBOSE, _("File '%s' was considered already.\n"));
return 0;
}
switch (file->command_state)
{
case cs_not_started:
case cs_deps_running:
break;
case cs_running:
DBF (DB_VERBOSE, _("Still updating file '%s'.\n"));
return 0;
case cs_finished:
DBF (DB_VERBOSE, _("Finished updating file '%s'.\n"));
return file->update_status;
default:
abort ();
}
/* Determine whether the diagnostics will be issued should this update
fail. */
file->no_diag = file->dontcare;
++depth;
/* Notice recursive update of the same file. */
start_updating (file);
/* We might change file if we find a different one via vpath;
remember this one to turn off updating. */
ofile = file;
/* Looking at the file's modtime beforehand allows the possibility
that its name may be changed by a VPATH search, and thus it may
not need an implicit rule. If this were not done, the file
might get implicit commands that apply to its initial name, only
to have that name replaced with another found by VPATH search. */
this_mtime = file_mtime (file);
check_renamed (file);
noexist = this_mtime == NONEXISTENT_MTIME;
if (noexist)
DBF (DB_BASIC, _("File '%s' does not exist.\n"));
else if (ORDINARY_MTIME_MIN <= this_mtime && this_mtime <= ORDINARY_MTIME_MAX
&& file->low_resolution_time)
{
/* Avoid spurious rebuilds due to low resolution time stamps. */
int ns = FILE_TIMESTAMP_NS (this_mtime);
if (ns != 0)
error (NILF, _("*** Warning: .LOW_RESOLUTION_TIME file '%s' has a high resolution time stamp"),
file->name);
this_mtime += FILE_TIMESTAMPS_PER_S - 1 - ns;
}
must_make = noexist;
/* If file was specified as a target with no commands,
come up with some default commands. */
if (!file->phony && file->cmds == 0 && !file->tried_implicit)
{
if (try_implicit_rule (file, depth))
DBF (DB_IMPLICIT, _("Found an implicit rule for '%s'.\n"));
else
DBF (DB_IMPLICIT, _("No implicit rule found for '%s'.\n"));
file->tried_implicit = 1;
}
if (file->cmds == 0 && !file->is_target
&& default_file != 0 && default_file->cmds != 0)
{
DBF (DB_IMPLICIT, _("Using default recipe for '%s'.\n"));
file->cmds = default_file->cmds;
}
/* Update all non-intermediate files we depend on, if necessary, and see
whether any of them is more recent than this file. We need to walk our
deps, AND the deps of any also_make targets to ensure everything happens
in the correct order. */
amake.file = file;
amake.next = file->also_make;
ad = &amake;
while (ad)
{
struct dep *lastd = 0;
/* Find the deps we're scanning */
d = ad->file->deps;
ad = ad->next;
while (d)
{
FILE_TIMESTAMP mtime;
int maybe_make;
int dontcare = 0;
check_renamed (d->file);
mtime = file_mtime (d->file);
check_renamed (d->file);
if (is_updating (d->file))
{
error (NILF, _("Circular %s <- %s dependency dropped."),
file->name, d->file->name);
/* We cannot free D here because our the caller will still have
a reference to it when we were called recursively via
check_dep below. */
if (lastd == 0)
file->deps = d->next;
else
lastd->next = d->next;
d = d->next;
continue;
}
d->file->parent = file;
maybe_make = must_make;
/* Inherit dontcare flag from our parent. */
if (rebuilding_makefiles)
{
dontcare = d->file->dontcare;
d->file->dontcare = file->dontcare;
}
dep_status |= check_dep (d->file, depth, this_mtime, &maybe_make);
/* Restore original dontcare flag. */
if (rebuilding_makefiles)
d->file->dontcare = dontcare;
if (! d->ignore_mtime)
must_make = maybe_make;
check_renamed (d->file);
{
register struct file *f = d->file;
if (f->double_colon)
f = f->double_colon;
do
{
running |= (f->command_state == cs_running
|| f->command_state == cs_deps_running);
f = f->prev;
}
while (f != 0);
}
if (dep_status != 0 && !keep_going_flag)
break;
if (!running)
/* The prereq is considered changed if the timestamp has changed while
it was built, OR it doesn't exist. */
d->changed = ((file_mtime (d->file) != mtime)
|| (mtime == NONEXISTENT_MTIME));
lastd = d;
d = d->next;
}
}
/* Now we know whether this target needs updating.
If it does, update all the intermediate files we depend on. */
if (must_make || always_make_flag)
{
for (d = file->deps; d != 0; d = d->next)
if (d->file->intermediate)
{
int dontcare = 0;
FILE_TIMESTAMP mtime = file_mtime (d->file);
check_renamed (d->file);
d->file->parent = file;
/* Inherit dontcare flag from our parent. */
if (rebuilding_makefiles)
{
dontcare = d->file->dontcare;
d->file->dontcare = file->dontcare;
}
dep_status |= update_file (d->file, depth);
/* Restore original dontcare flag. */
if (rebuilding_makefiles)
d->file->dontcare = dontcare;
check_renamed (d->file);
{
register struct file *f = d->file;
if (f->double_colon)
f = f->double_colon;
do
{
running |= (f->command_state == cs_running
|| f->command_state == cs_deps_running);
f = f->prev;
}
while (f != 0);
}
if (dep_status != 0 && !keep_going_flag)
break;
if (!running)
d->changed = ((file->phony && file->cmds != 0)
|| file_mtime (d->file) != mtime);
}
}
finish_updating (file);
finish_updating (ofile);
DBF (DB_VERBOSE, _("Finished prerequisites of target file '%s'.\n"));
if (running)
{
set_command_state (file, cs_deps_running);
--depth;
DBF (DB_VERBOSE, _("The prerequisites of '%s' are being made.\n"));
return 0;
}
/* If any dependency failed, give up now. */
if (dep_status != 0)
{
file->update_status = dep_status;
notice_finished_file (file);
--depth;
DBF (DB_VERBOSE, _("Giving up on target file '%s'.\n"));
if (depth == 0 && keep_going_flag
&& !just_print_flag && !question_flag)
error (NILF,
_("Target '%s' not remade because of errors."), file->name);
return dep_status;
}
if (file->command_state == cs_deps_running)
/* The commands for some deps were running on the last iteration, but
they have finished now. Reset the command_state to not_started to
simplify later bookkeeping. It is important that we do this only
when the prior state was cs_deps_running, because that prior state
was definitely propagated to FILE's also_make's by set_command_state
(called above), but in another state an also_make may have
independently changed to finished state, and we would confuse that
file's bookkeeping (updated, but not_started is bogus state). */
set_command_state (file, cs_not_started);
/* Now record which prerequisites are more
recent than this file, so we can define $?. */
deps_changed = 0;
for (d = file->deps; d != 0; d = d->next)
{
FILE_TIMESTAMP d_mtime = file_mtime (d->file);
check_renamed (d->file);
if (! d->ignore_mtime)
{
#if 1
/* %%% In version 4, remove this code completely to
implement not remaking deps if their deps are newer
than their parents. */
if (d_mtime == NONEXISTENT_MTIME && !d->file->intermediate)
/* We must remake if this dep does not
exist and is not intermediate. */
must_make = 1;
#endif
/* Set DEPS_CHANGED if this dep actually changed. */
deps_changed |= d->changed;
}
/* Set D->changed if either this dep actually changed,
or its dependent, FILE, is older or does not exist. */
d->changed |= noexist || d_mtime > this_mtime;
if (!noexist && ISDB (DB_BASIC|DB_VERBOSE))
{
const char *fmt = 0;
if (d->ignore_mtime)
{
if (ISDB (DB_VERBOSE))
fmt = _("Prerequisite '%s' is order-only for target '%s'.\n");
}
else if (d_mtime == NONEXISTENT_MTIME)
{
if (ISDB (DB_BASIC))
fmt = _("Prerequisite '%s' of target '%s' does not exist.\n");
}
else if (d->changed)
{
if (ISDB (DB_BASIC))
fmt = _("Prerequisite '%s' is newer than target '%s'.\n");
}
else if (ISDB (DB_VERBOSE))
fmt = _("Prerequisite '%s' is older than target '%s'.\n");
if (fmt)
{
print_spaces (depth);
printf (fmt, dep_name (d), file->name);
fflush (stdout);
}
}
}
/* Here depth returns to the value it had when we were called. */
depth--;
if (file->double_colon && file->deps == 0)
{
must_make = 1;
DBF (DB_BASIC,
_("Target '%s' is double-colon and has no prerequisites.\n"));
}
else if (!noexist && file->is_target && !deps_changed && file->cmds == 0
&& !always_make_flag)
{
must_make = 0;
DBF (DB_VERBOSE,
_("No recipe for '%s' and no prerequisites actually changed.\n"));
}
else if (!must_make && file->cmds != 0 && always_make_flag)
{
must_make = 1;
DBF (DB_VERBOSE, _("Making '%s' due to always-make flag.\n"));
}
if (!must_make)
{
if (ISDB (DB_VERBOSE))
{
print_spaces (depth);
printf (_("No need to remake target '%s'"), file->name);
if (!streq (file->name, file->hname))
printf (_("; using VPATH name '%s'"), file->hname);
puts (".");
fflush (stdout);
}
notice_finished_file (file);
/* Since we don't need to remake the file, convert it to use the
VPATH filename if we found one. hfile will be either the
local name if no VPATH or the VPATH name if one was found. */
while (file)
{
file->name = file->hname;
file = file->prev;
}
return 0;
}
DBF (DB_BASIC, _("Must remake target '%s'.\n"));
/* It needs to be remade. If it's VPATH and not reset via GPATH, toss the
VPATH. */
if (!streq(file->name, file->hname))
{
DB (DB_BASIC, (_(" Ignoring VPATH name '%s'.\n"), file->hname));
file->ignore_vpath = 1;
}
/* Now, take appropriate actions to remake the file. */
remake_file (file);
if (file->command_state != cs_finished)
{
DBF (DB_VERBOSE, _("Recipe of '%s' is being run.\n"));
return 0;
}
switch (file->update_status)
{
case 2:
DBF (DB_BASIC, _("Failed to remake target file '%s'.\n"));
break;
case 0:
DBF (DB_BASIC, _("Successfully remade target file '%s'.\n"));
break;
case 1:
DBF (DB_BASIC, _("Target file '%s' needs remade under -q.\n"));
break;
default:
assert (file->update_status >= 0 && file->update_status <= 2);
break;
}
file->updated = 1;
return file->update_status;
}
int
start_remote_job_p (int first_p)
{
static int inited = 0;
int status;
int njobs;
if (!inited)
{
/* Allow the user to turn off job exportation (useful while he is
debugging Customs, for example). */
if (getenv ("GNU_MAKE_NO_CUSTOMS") != 0)
{
inited = -1;
return 0;
}
/* For secure Customs, make is installed setuid root and
Customs requires a privileged source port be used. */
make_access ();
if (ISDB (DB_JOBS))
Rpc_Debug(1);
/* Ping the daemon once to see if it is there. */
inited = Customs_Ping () == RPC_SUCCESS ? 1 : -1;
/* Return to normal user access. */
user_access ();
if (starting_directory == 0)
/* main couldn't figure it out. */
inited = -1;
else
{
/* Normalize the current directory path name to something
that should work on all machines exported to. */
normalized_cwd = xmalloc (GET_PATH_MAX);
strcpy (normalized_cwd, starting_directory);
if (Customs_NormPath (normalized_cwd, GET_PATH_MAX) < 0)
/* Path normalization failure means using Customs
won't work, but it's not really an error. */
inited = -1;
}
}
if (inited < 0)
return 0;
njobs = job_slots_used;
if (!first_p)
njobs -= 1; /* correction for being called from reap_children() */
/* the first job should run locally, or, if the -l flag is given, we use
that as clue as to how many local jobs should be scheduled locally */
if (max_load_average < 0 && njobs == 0 || njobs < max_load_average)
return 0;
status = Customs_Host (EXPORT_SAME, &permit);
if (status != RPC_SUCCESS)
{
DB (DB_JOBS, (_("Customs won't export: %s\n"),
Rpc_ErrorMessage (status)));
return 0;
}
return !CUSTOMS_FAIL (&permit.addr);
}
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);
}
