void
mypipe(int *pv)
{
if (pipe(pv) < 0)
goto oops;
pv[0] = dmove(pv[0], -1);
pv[1] = dmove(pv[1], -1);
if (pv[0] >= 0 && pv[1] >= 0)
return;
oops:
stderror(ERR_PIPE);
}
void
mypipe(int *pv)
{
if (pipe(pv) < 0)
goto oops;
(void)close_on_exec(pv[0] = dmove(pv[0], -1), 1);
(void)close_on_exec(pv[1] = dmove(pv[1], -1), 1);
if (pv[0] >= 0 && pv[1] >= 0)
return;
if (pv[0] >= 0)
xclose(pv[0]);
if (pv[1] >= 0)
xclose(pv[1]);
oops:
stderror(ERR_PIPE);
}
char move(int x, int y, char player)
{
char vsplayer = (player == 'W') ? 'B' : 'W';
board[x][y] = player;
if (board[x-1][y-1]==vsplayer) dmove(x-1, y-1, player, 1);
if (board[x-1][y]==vsplayer) dmove(x-1, y, player, 2);
if (board[x-1][y+1]==vsplayer) dmove(x-1, y+1, player, 3);
if (board[x][y-1]==vsplayer) dmove(x, y-1, player, 4);
if (board[x][y+1]==vsplayer) dmove(x, y+1, player, 5);
if (board[x+1][y-1]==vsplayer) dmove(x+1, y-1, player, 6);
if (board[x+1][y]==vsplayer) dmove(x+1, y, player, 7);
if (board[x+1][y+1]==vsplayer) dmove(x+1, y+1, player, 8);
return vsplayer;
}
/*
* Source to a file putting the file descriptor in a safe place (> 2).
*/
static int
srcfile(const char *f, int onlyown, int flag)
{
int unit;
if ((unit = open(f, O_RDONLY)) == -1)
return 0;
unit = dmove(unit, -1);
(void) ioctl(unit, FIOCLEX, NULL);
srcunit(unit, onlyown, flag);
return 1;
}
void
donefds(void)
{
xclose(0);
xclose(1);
xclose(2);
didfds = 0;
#ifdef NISPLUS
{
int fd = xopen(_PATH_DEVNULL, O_RDONLY|O_LARGEFILE);
(void)dcopy(fd, 1);
(void)dcopy(fd, 2);
(void)dmove(fd, 0);
}
#endif /*NISPLUS*/
}
void dmove(int x, int y, char player, int direction)
{
// printf("dmove!\n");
char vsplayer = (player == 'W') ? 'B' : 'W';
int x1, y1;
x1 = x; y1 = y;
switch (direction){
case 1:
x1--;
y1--;
break;
case 2:
x1--;
break;
case 3:
x1--;
y1++;
break;
case 4:
y1--;
break;
case 5:
y1++;
break;
case 6:
x1++;
y1--;
break;
case 7:
x1++;
break;
case 8:
x1++;
y1++;
break;
}
if ((x1>0)&&(y1>0)&&(x1<9)&&(y1<9)){
if (board[x1][y1] == vsplayer)
dmove(x1, y1, player, direction);
if (board[x1][y1] == player)
board[x][y] = player;
}
}
/*ARGSUSED*/
void
execash(Char **t, struct command *kp)
{
jmp_buf osetexit;
sig_t osigint, osigquit, osigterm;
int my_reenter, odidfds, oOLDSTD, oSHERR, oSHIN, oSHOUT;
int saveDIAG, saveIN, saveOUT, saveSTD;
if (chkstop == 0 && setintr)
panystop(0);
/*
* Hmm, we don't really want to do that now because we might
* fail, but what is the choice
*/
rechist();
osigint = signal(SIGINT, parintr);
osigquit = signal(SIGQUIT, parintr);
osigterm = signal(SIGTERM, parterm);
odidfds = didfds;
oSHIN = SHIN;
oSHOUT = SHOUT;
oSHERR = SHERR;
oOLDSTD = OLDSTD;
saveIN = dcopy(SHIN, -1);
saveOUT = dcopy(SHOUT, -1);
saveDIAG = dcopy(SHERR, -1);
saveSTD = dcopy(OLDSTD, -1);
lshift(kp->t_dcom, 1);
getexit(osetexit);
if ((my_reenter = setexit()) == 0) {
SHIN = dcopy(0, -1);
SHOUT = dcopy(1, -1);
SHERR = dcopy(2, -1);
didfds = 0;
doexec(t, kp);
}
(void)signal(SIGINT, osigint);
(void)signal(SIGQUIT, osigquit);
(void)signal(SIGTERM, osigterm);
doneinp = 0;
didfds = odidfds;
(void)close(SHIN);
(void)close(SHOUT);
(void)close(SHERR);
(void)close(OLDSTD);
SHIN = dmove(saveIN, oSHIN);
SHOUT = dmove(saveOUT, oSHOUT);
SHERR = dmove(saveDIAG, oSHERR);
OLDSTD = dmove(saveSTD, oOLDSTD);
resexit(osetexit);
if (my_reenter)
stderror(ERR_SILENT);
}
/*
* Perform io redirection.
* We may or maynot be forked here.
*/
static void
doio(struct command *t, int *pipein, int *pipeout)
{
Char *cp;
int fd, flags;
flags = t->t_dflg;
if (didfds || (flags & F_REPEAT))
return;
if ((flags & F_READ) == 0) {/* F_READ already done */
if (t->t_dlef) {
char tmp[MAXPATHLEN+1];
/*
* so < /dev/std{in,out,err} work
*/
(void)dcopy(SHIN, 0);
(void)dcopy(SHOUT, 1);
(void)dcopy(SHERR, 2);
cp = splicepipe(t, t->t_dlef);
(void)strlcpy(tmp, short2str(cp), sizeof(tmp));
xfree((ptr_t) cp);
if ((fd = open(tmp, O_RDONLY)) < 0) {
stderror(ERR_SYSTEM, tmp, strerror(errno));
/* NOTREACHED */
}
(void)dmove(fd, 0);
}
else if (flags & F_PIPEIN) {
(void)close(0);
(void)dup(pipein[0]);
(void)close(pipein[0]);
(void)close(pipein[1]);
}
else if ((flags & F_NOINTERRUPT) && tpgrp == -1) {
(void)close(0);
(void)open(_PATH_DEVNULL, O_RDONLY);
}
else {
(void)close(0);
(void)dup(OLDSTD);
(void)ioctl(0, FIONCLEX, NULL);
}
}
if (t->t_drit) {
char tmp[MAXPATHLEN+1];
cp = splicepipe(t, t->t_drit);
(void)strlcpy(tmp, short2str(cp), sizeof(tmp));
xfree((ptr_t) cp);
/*
* so > /dev/std{out,err} work
*/
(void)dcopy(SHOUT, 1);
(void)dcopy(SHERR, 2);
if ((flags & F_APPEND) &&
#ifdef O_APPEND
(fd = open(tmp, O_WRONLY | O_APPEND)) >= 0);
#else
(fd = open(tmp, O_WRONLY)) >= 0)
(void)lseek(1, (off_t) 0, SEEK_END);
#endif
else {
if (!(flags & F_OVERWRITE) && adrof(STRnoclobber)) {
int
main(int argc, char *argv[])
{
struct sigaction oact;
Char *cp;
char *tcp, **tempv;
const char *ecp;
sigset_t nsigset;
int f;
cshin = stdin;
cshout = stdout;
csherr = stderr;
setprogname(argv[0]);
settimes(); /* Immed. estab. timing base */
/*
* Initialize non constant strings
*/
#ifdef _PATH_BSHELL
STR_BSHELL = SAVE(_PATH_BSHELL);
#endif
#ifdef _PATH_CSHELL
STR_SHELLPATH = SAVE(_PATH_CSHELL);
#endif
STR_environ = blk2short(environ);
environ = short2blk(STR_environ); /* So that we can free it */
STR_WORD_CHARS = SAVE(WORD_CHARS);
HIST = '!';
HISTSUB = '^';
word_chars = STR_WORD_CHARS;
tempv = argv;
if (eq(str2short(tempv[0]), STRaout)) /* A.out's are quittable */
quitit = 1;
uid = getuid();
gid = getgid();
euid = geteuid();
egid = getegid();
/*
* We are a login shell if: 1. we were invoked as -<something> and we had
* no arguments 2. or we were invoked only with the -l flag
*/
loginsh = (**tempv == '-' && argc == 1) ||
(argc == 2 && tempv[1][0] == '-' && tempv[1][1] == 'l' &&
tempv[1][2] == '\0');
if (loginsh && **tempv != '-') {
/*
* Mangle the argv space
*/
tempv[1][0] = '\0';
tempv[1][1] = '\0';
tempv[1] = NULL;
for (tcp = *tempv; *tcp++;)
continue;
for (tcp--; tcp >= *tempv; tcp--)
tcp[1] = tcp[0];
*++tcp = '-';
argc--;
}
if (loginsh)
(void)time(&chktim);
AsciiOnly = 1;
#ifdef NLS
(void)setlocale(LC_ALL, "");
{
int k;
for (k = 0200; k <= 0377 && !Isprint(k); k++)
continue;
AsciiOnly = k > 0377;
}
#else
AsciiOnly = getenv("LANG") == NULL && getenv("LC_CTYPE") == NULL;
#endif /* NLS */
/*
* Move the descriptors to safe places. The variable didfds is 0 while we
* have only FSH* to work with. When didfds is true, we have 0,1,2 and
* prefer to use these.
*/
initdesc();
/*
* XXX: This is to keep programs that use stdio happy.
* what we really want is freunopen() ....
* Closing cshin cshout and csherr (which are really stdin stdout
* and stderr at this point and then reopening them in the same order
* gives us again stdin == cshin stdout == cshout and stderr == csherr.
* If that was not the case builtins like printf that use stdio
* would break. But in any case we could fix that with memcpy and
* a bit of pointer manipulation...
* Fortunately this is not needed under the current implementation
* of stdio.
*/
(void)fclose(cshin);
(void)fclose(cshout);
(void)fclose(csherr);
if (!(cshin = funopen2((void *) &SHIN, readf, writef, seekf, NULL,
closef)))
exit(1);
if (!(cshout = funopen2((void *) &SHOUT, readf, writef, seekf, NULL,
closef)))
exit(1);
if (!(csherr = funopen2((void *) &SHERR, readf, writef, seekf, NULL,
closef)))
exit(1);
(void)setvbuf(cshin, NULL, _IOLBF, 0);
(void)setvbuf(cshout, NULL, _IOLBF, 0);
(void)setvbuf(csherr, NULL, _IOLBF, 0);
/*
* Initialize the shell variables. ARGV and PROMPT are initialized later.
* STATUS is also munged in several places. CHILD is munged when
* forking/waiting
*/
set(STRstatus, Strsave(STR0));
if ((ecp = getenv("HOME")) != NULL)
cp = quote(SAVE(ecp));
else
cp = NULL;
if (cp == NULL)
fast = 1; /* No home -> can't read scripts */
else
set(STRhome, cp);
dinit(cp); /* dinit thinks that HOME == cwd in a login
* shell */
/*
* Grab other useful things from the environment. Should we grab
* everything??
*/
if ((ecp = getenv("LOGNAME")) != NULL ||
(ecp = getenv("USER")) != NULL)
set(STRuser, quote(SAVE(ecp)));
if ((ecp = getenv("TERM")) != NULL)
set(STRterm, quote(SAVE(ecp)));
/*
* Re-initialize path if set in environment
*/
if ((ecp = getenv("PATH")) == NULL) {
#ifdef _PATH_DEFPATH
importpath(str2short(_PATH_DEFPATH));
#else
setq(STRpath, defaultpath(), &shvhed);
#endif
} else {
importpath(str2short(ecp));
}
set(STRshell, Strsave(STR_SHELLPATH));
doldol = putn((int) getpid()); /* For $$ */
shtemp = Strspl(STRtmpsh, doldol); /* For << */
/*
* Record the interrupt states from the parent process. If the parent is
* non-interruptible our hand must be forced or we (and our children) won't
* be either. Our children inherit termination from our parent. We catch it
* only if we are the login shell.
*/
/* parents interruptibility */
(void)sigaction(SIGINT, NULL, &oact);
parintr = oact.sa_handler;
(void)sigaction(SIGTERM, NULL, &oact);
parterm = oact.sa_handler;
/* catch these all, login shell or not */
(void)signal(SIGHUP, phup); /* exit processing on HUP */
(void)signal(SIGXCPU, phup); /* ...and on XCPU */
(void)signal(SIGXFSZ, phup); /* ...and on XFSZ */
/*
* Process the arguments.
*
* Note that processing of -v/-x is actually delayed till after script
* processing.
*
* We set the first character of our name to be '-' if we are a shell
* running interruptible commands. Many programs which examine ps'es
* use this to filter such shells out.
*/
argc--, tempv++;
while (argc > 0 && (tcp = tempv[0])[0] == '-' && *++tcp != '\0' && !batch) {
do
switch (*tcp++) {
case 0: /* - Interruptible, no prompt */
prompt = 0;
setintr = 1;
nofile = 1;
break;
case 'b': /* -b Next arg is input file */
batch = 1;
break;
case 'c': /* -c Command input from arg */
if (argc == 1)
xexit(0);
argc--, tempv++;
arginp = SAVE(tempv[0]);
prompt = 0;
nofile = 1;
break;
case 'e': /* -e Exit on any error */
exiterr = 1;
break;
case 'f': /* -f Fast start */
fast = 1;
break;
case 'i': /* -i Interactive, even if !intty */
intact = 1;
nofile = 1;
break;
case 'm': /* -m read .cshrc (from su) */
mflag = 1;
break;
case 'n': /* -n Don't execute */
noexec = 1;
break;
case 'q': /* -q (Undoc'd) ... die on quit */
quitit = 1;
break;
case 's': /* -s Read from std input */
nofile = 1;
break;
case 't': /* -t Read one line from input */
onelflg = 2;
prompt = 0;
nofile = 1;
break;
case 'v': /* -v Echo hist expanded input */
nverbose = 1; /* ... later */
break;
case 'x': /* -x Echo just before execution */
nexececho = 1; /* ... later */
break;
case 'V': /* -V Echo hist expanded input */
setNS(STRverbose); /* NOW! */
break;
case 'X': /* -X Echo just before execution */
setNS(STRecho); /* NOW! */
break;
} while (*tcp);
tempv++, argc--;
}
if (quitit) /* With all due haste, for debugging */
(void)signal(SIGQUIT, SIG_DFL);
/*
* Unless prevented by -, -c, -i, -s, or -t, if there are remaining
* arguments the first of them is the name of a shell file from which to
* read commands.
*/
if (nofile == 0 && argc > 0) {
nofile = open(tempv[0], O_RDONLY);
if (nofile < 0) {
child = 1; /* So this doesn't return */
stderror(ERR_SYSTEM, tempv[0], strerror(errno));
}
ffile = SAVE(tempv[0]);
/*
* Replace FSHIN. Handle /dev/std{in,out,err} specially
* since once they are closed we cannot open them again.
* In that case we use our own saved descriptors
*/
if ((SHIN = dmove(nofile, FSHIN)) < 0)
switch(nofile) {
case 0:
SHIN = FSHIN;
break;
case 1:
SHIN = FSHOUT;
break;
case 2:
SHIN = FSHERR;
break;
default:
stderror(ERR_SYSTEM, tempv[0], strerror(errno));
/* NOTREACHED */
}
(void)ioctl(SHIN, FIOCLEX, NULL);
prompt = 0;
/* argc not used any more */ tempv++;
}
intty = isatty(SHIN);
intty |= intact;
if (intty || (intact && isatty(SHOUT))) {
if (!batch && (uid != euid || gid != egid)) {
errno = EACCES;
child = 1; /* So this doesn't return */
stderror(ERR_SYSTEM, "csh", strerror(errno));
}
}
/*
* Decide whether we should play with signals or not. If we are explicitly
* told (via -i, or -) or we are a login shell (arg0 starts with -) or the
* input and output are both the ttys("csh", or "csh</dev/ttyx>/dev/ttyx")
* Note that in only the login shell is it likely that parent may have set
* signals to be ignored
*/
if (loginsh || intact || (intty && isatty(SHOUT)))
setintr = 1;
settell();
/*
* Save the remaining arguments in argv.
*/
setq(STRargv, blk2short(tempv), &shvhed);
/*
* Set up the prompt.
*/
if (prompt) {
set(STRprompt, Strsave(uid == 0 ? STRsymhash : STRsymcent));
/* that's a meta-questionmark */
set(STRprompt2, Strsave(STRmquestion));
}
/*
* If we are an interactive shell, then start fiddling with the signals;
* this is a tricky game.
*/
shpgrp = getpgrp();
opgrp = tpgrp = -1;
if (setintr) {
**argv = '-';
if (!quitit) /* Wary! */
(void)signal(SIGQUIT, SIG_IGN);
(void)signal(SIGINT, pintr);
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGINT);
(void)sigprocmask(SIG_BLOCK, &nsigset, NULL);
(void)signal(SIGTERM, SIG_IGN);
if (quitit == 0 && arginp == 0) {
(void)signal(SIGTSTP, SIG_IGN);
(void)signal(SIGTTIN, SIG_IGN);
(void)signal(SIGTTOU, SIG_IGN);
/*
* Wait till in foreground, in case someone stupidly runs csh &
* dont want to try to grab away the tty.
*/
if (isatty(FSHERR))
f = FSHERR;
else if (isatty(FSHOUT))
f = FSHOUT;
else if (isatty(OLDSTD))
f = OLDSTD;
else
f = -1;
retry:
if ((tpgrp = tcgetpgrp(f)) != -1) {
if (tpgrp != shpgrp) {
sig_t old = signal(SIGTTIN, SIG_DFL);
(void)kill(0, SIGTTIN);
(void)signal(SIGTTIN, old);
goto retry;
}
opgrp = shpgrp;
shpgrp = getpid();
tpgrp = shpgrp;
/*
* Setpgid will fail if we are a session leader and
* mypid == mypgrp (POSIX 4.3.3)
*/
if (opgrp != shpgrp)
if (setpgid(0, shpgrp) == -1)
goto notty;
/*
* We do that after we set our process group, to make sure
* that the process group belongs to a process in the same
* session as the tty (our process and our group) (POSIX 7.2.4)
*/
if (tcsetpgrp(f, shpgrp) == -1)
goto notty;
(void)ioctl(dcopy(f, FSHTTY), FIOCLEX, NULL);
}
if (tpgrp == -1) {
notty:
(void)fprintf(csherr, "Warning: no access to tty (%s).\n",
strerror(errno));
(void)fprintf(csherr, "Thus no job control in this shell.\n");
}
}
}
if ((setintr == 0) && (parintr == SIG_DFL))
setintr = 1;
(void)signal(SIGCHLD, pchild); /* while signals not ready */
/*
* Set an exit here in case of an interrupt or error reading the shell
* start-up scripts.
*/
reenter = setexit(); /* PWP */
haderr = 0; /* In case second time through */
if (!fast && reenter == 0) {
/* Will have value(STRhome) here because set fast if don't */
{
sig_t oparintr;
sigset_t osigset;
int osetintr;
oparintr = parintr;
osetintr = setintr;
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGINT);
(void)sigprocmask(SIG_BLOCK, &nsigset, &osigset);
setintr = 0;
parintr = SIG_IGN; /* Disable onintr */
#ifdef _PATH_DOTCSHRC
(void)srcfile(_PATH_DOTCSHRC, 0, 0);
#endif
if (!fast && !arginp && !onelflg)
dohash(NULL, NULL);
#ifdef _PATH_DOTLOGIN
if (loginsh)
(void)srcfile(_PATH_DOTLOGIN, 0, 0);
#endif
(void)sigprocmask(SIG_SETMASK, &osigset, NULL);
setintr = osetintr;
parintr = oparintr;
}
(void)srccat(value(STRhome), STRsldotcshrc);
if (!fast && !arginp && !onelflg && !havhash)
dohash(NULL, NULL);
/*
* Source history before .login so that it is available in .login
*/
if ((cp = value(STRhistfile)) != STRNULL)
tildehist[2] = cp;
dosource(tildehist, NULL);
if (loginsh)
(void)srccat(value(STRhome), STRsldotlogin);
}
/*
* Now are ready for the -v and -x flags
*/
if (nverbose)
setNS(STRverbose);
if (nexececho)
setNS(STRecho);
/*
* All the rest of the world is inside this call. The argument to process
* indicates whether it should catch "error unwinds". Thus if we are a
* interactive shell our call here will never return by being blown past on
* an error.
*/
process(setintr);
/*
* Mop-up.
*/
if (intty) {
if (loginsh) {
(void)fprintf(cshout, "logout\n");
(void)close(SHIN);
child = 1;
goodbye();
}
else {
(void)fprintf(cshout, "exit\n");
}
}
rechist();
exitstat();
/* NOTREACHED */
}
static void
backeval(struct blk_buf *bb, struct Strbuf *word, Char *cp, int literal)
{
ssize_t icnt;
Char c, *ip;
struct command faket;
int hadnl;
int pvec[2], quoted;
Char *fakecom[2], ibuf[BUFSIZE];
char tibuf[BUFSIZE];
hadnl = 0;
icnt = 0;
quoted = (literal || (cp[0] & QUOTE)) ? QUOTE : 0;
faket.t_dtyp = NODE_COMMAND;
faket.t_dflg = F_BACKQ;
faket.t_dlef = 0;
faket.t_drit = 0;
faket.t_dspr = 0;
faket.t_dcom = fakecom;
fakecom[0] = STRfakecom1;
fakecom[1] = 0;
/*
* We do the psave job to temporarily change the current job so that the
* following fork is considered a separate job. This is so that when
* backquotes are used in a builtin function that calls glob the "current
* job" is not corrupted. We only need one level of pushed jobs as long as
* we are sure to fork here.
*/
psavejob();
cleanup_push(&faket, psavejob_cleanup); /* faket is only a marker */
/*
* It would be nicer if we could integrate this redirection more with the
* routines in sh.sem.c by doing a fake execute on a builtin function that
* was piped out.
*/
mypipe(pvec);
cleanup_push(&pvec[0], open_cleanup);
cleanup_push(&pvec[1], open_cleanup);
if (pfork(&faket, -1) == 0) {
jmp_buf_t osetexit;
struct command *t;
size_t omark;
xclose(pvec[0]);
(void) dmove(pvec[1], 1);
(void) dmove(SHDIAG, 2);
initdesc();
closem();
arginp = cp;
for (arginp = cp; *cp; cp++) {
*cp &= TRIM;
if (is_set(STRcsubstnonl) && (*cp == '\n' || *cp == '\r'))
*cp = ' ';
}
/*
* In the child ``forget'' everything about current aliases or
* eval vectors.
*/
alvec = NULL;
evalvec = NULL;
alvecp = NULL;
evalp = NULL;
omark = cleanup_push_mark();
getexit(osetexit);
for (;;) {
(void) setexit();
justpr = 0;
if (haderr) {
/* unwind */
doneinp = 0;
cleanup_pop_mark(omark);
resexit(osetexit);
reset();
}
if (seterr) {
xfree(seterr);
seterr = NULL;
}
(void) lex(¶ml);
cleanup_push(¶ml, lex_cleanup);
if (seterr)
stderror(ERR_OLD);
alias(¶ml);
t = syntax(paraml.next, ¶ml, 0);
if (t == NULL)
return;
cleanup_push(t, syntax_cleanup);
/* The F_BACKQ flag must set so the job output is correct if
* printexitvalue is set. If it's not set, the job output
* will have "Exit N" appended where N is the exit status. */
t->t_dflg = F_BACKQ|F_NOFORK;
if (seterr)
stderror(ERR_OLD);
#ifdef SIGTSTP
signal(SIGTSTP, SIG_IGN);
#endif
#ifdef SIGTTIN
signal(SIGTTIN, SIG_IGN);
#endif
#ifdef SIGTTOU
signal(SIGTTOU, SIG_IGN);
#endif
execute(t, -1, NULL, NULL, TRUE);
cleanup_until(¶ml);
}
}
cleanup_until(&pvec[1]);
c = 0;
ip = NULL;
do {
ssize_t cnt = 0;
char *tmp;
tmp = tibuf;
for (;;) {
while (icnt == 0) {
int i, eof;
ip = ibuf;
icnt = xread(pvec[0], tmp, tibuf + BUFSIZE - tmp);
eof = 0;
if (icnt <= 0) {
if (tmp == tibuf)
goto eof;
icnt = 0;
eof = 1;
}
icnt += tmp - tibuf;
i = 0;
tmp = tibuf;
while (tmp < tibuf + icnt) {
int len;
len = normal_mbtowc(&ip[i], tmp, tibuf + icnt - tmp);
if (len == -1) {
reset_mbtowc();
if (!eof && (size_t)(tibuf + icnt - tmp) < MB_CUR_MAX) {
break; /* Maybe a partial character */
}
ip[i] = (unsigned char) *tmp | INVALID_BYTE; /* Error */
}
if (len <= 0)
len = 1;
i++;
tmp += len;
}
if (tmp != tibuf)
memmove (tibuf, tmp, tibuf + icnt - tmp);
tmp = tibuf + (tibuf + icnt - tmp);
icnt = i;
}
if (hadnl)
break;
--icnt;
c = (*ip++ & TRIM);
if (c == 0)
break;
#if defined(WINNT_NATIVE) || defined(__CYGWIN__)
if (c == '\r')
c = ' ';
#endif /* WINNT_NATIVE || __CYGWIN__ */
if (c == '\n') {
/*
* Continue around the loop one more time, so that we can eat
* the last newline without terminating this word.
*/
hadnl = 1;
continue;
}
if (!quoted && (c == ' ' || c == '\t'))
break;
cnt++;
Strbuf_append1(word, c | quoted);
}
/*
* Unless at end-of-file, we will form a new word here if there were
* characters in the word, or in any case when we take text literally.
* If we didn't make empty words here when literal was set then we
* would lose blank lines.
*/
if (c != 0 && (cnt || literal))
pword(bb, word);
hadnl = 0;
} while (c > 0);
eof:
cleanup_until(&pvec[0]);
pwait();
cleanup_until(&faket); /* psavejob_cleanup(); */
}
/*
* Perform io redirection.
* We may or maynot be forked here.
*/
static void
doio(struct command *t, int *pipein, int *pipeout)
{
int fd;
Char *cp;
unsigned long flags = t->t_dflg;
if (didfds || (flags & F_REPEAT))
return;
if ((flags & F_READ) == 0) {/* F_READ already done */
if (t->t_dlef) {
char *tmp;
/*
* so < /dev/std{in,out,err} work
*/
(void) dcopy(SHIN, 0);
(void) dcopy(SHOUT, 1);
(void) dcopy(SHDIAG, 2);
cp = splicepipe(t, t->t_dlef);
tmp = strsave(short2str(cp));
xfree(cp);
cleanup_push(tmp, xfree);
if ((fd = xopen(tmp, O_RDONLY|O_LARGEFILE)) < 0)
stderror(ERR_SYSTEM, tmp, strerror(errno));
cleanup_until(tmp);
/* allow input files larger than 2Gb */
#ifndef WINNT_NATIVE
(void) fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_LARGEFILE);
#endif /*!WINNT_NATIVE*/
(void) dmove(fd, 0);
}
else if (flags & F_PIPEIN) {
xclose(0);
TCSH_IGNORE(dup(pipein[0]));
xclose(pipein[0]);
xclose(pipein[1]);
}
else if ((flags & F_NOINTERRUPT) && tpgrp == -1) {
xclose(0);
(void) xopen(_PATH_DEVNULL, O_RDONLY|O_LARGEFILE);
}
else {
xclose(0);
TCSH_IGNORE(dup(OLDSTD));
#if defined(CLOSE_ON_EXEC) && defined(CLEX_DUPS)
/*
* PWP: Unlike Bezerkeley 4.3, FIONCLEX for Pyramid is preserved
* across dup()s, so we have to UNSET it here or else we get a
* command with NO stdin, stdout, or stderr at all (a bad thing
* indeed)
*/
(void) close_on_exec(0, 0);
#endif /* CLOSE_ON_EXEC && CLEX_DUPS */
}
}
if (t->t_drit) {
char *tmp;
cp = splicepipe(t, t->t_drit);
tmp = strsave(short2str(cp));
xfree(cp);
cleanup_push(tmp, xfree);
/*
* so > /dev/std{out,err} work
*/
(void) dcopy(SHOUT, 1);
(void) dcopy(SHDIAG, 2);
if ((flags & F_APPEND) != 0) {
#ifdef O_APPEND
fd = xopen(tmp, O_WRONLY|O_APPEND|O_LARGEFILE);
#else /* !O_APPEND */
fd = xopen(tmp, O_WRONLY|O_LARGEFILE);
(void) lseek(fd, (off_t) 0, L_XTND);
#endif /* O_APPEND */
}
else
fd = 0;
if ((flags & F_APPEND) == 0 || fd == -1) {
if (!(flags & F_OVERWRITE) && adrof(STRnoclobber)) {
if (flags & F_APPEND)
stderror(ERR_SYSTEM, tmp, strerror(errno));
chkclob(tmp);
}
if ((fd = xcreat(tmp, 0666)) < 0)
stderror(ERR_SYSTEM, tmp, strerror(errno));
/* allow input files larger than 2Gb */
#ifndef WINNT_NATIVE
(void) fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_LARGEFILE);
#endif /*!WINNT_NATIVE*/
}
cleanup_until(tmp);
(void) dmove(fd, 1);
is1atty = isatty(1);
}
else if (flags & F_PIPEOUT) {
xclose(1);
TCSH_IGNORE(dup(pipeout[1]));
is1atty = 0;
}
else {
xclose(1);
TCSH_IGNORE(dup(SHOUT));
is1atty = isoutatty;
# if defined(CLOSE_ON_EXEC) && defined(CLEX_DUPS)
(void) close_on_exec(1, 0);
# endif /* CLOSE_ON_EXEC && CLEX_DUPS */
}
xclose(2);
if (flags & F_STDERR) {
TCSH_IGNORE(dup(1));
is2atty = is1atty;
}
else {
TCSH_IGNORE(dup(SHDIAG));
is2atty = isdiagatty;
# if defined(CLOSE_ON_EXEC) && defined(CLEX_DUPS)
(void) close_on_exec(2, 0);
# endif /* CLOSE_ON_EXEC && CLEX_DUPS */
}
didfds = 1;
}
/*ARGSUSED*/
void
dobs2cmd(Char **v, struct command *c)
{
Char *cp, **globbed;
int i = 0, len = 0;
char *cmd = NULL;
int pvec[2];
struct command faket;
Char *fakecom[2];
char tibuf[BUFSIZE];
int icnt, old_pintr_disabled;
static const Char STRbs2cmd[] = { 'b','s','2','c','m','d','\0' };
v++;
if (setintr)
pintr_push_enable(&old_pintr_disabled);
v = glob_all_or_error(v);
if (setintr)
cleanup_until(&old_pintr_disabled);
globbed = v;
cleanup_push(globbed, blk_cleanup);
/* First round: count the string lengths */
for (i=0; v[i]; ++i) {
len += Strlen(v[i]) + (v[i+1] != NULL);
}
cmd = xmalloc(len+1); /* 1 for the final '\0' *//* FIXME: memory leak? */
/* 2nd round: fill cmd buffer */
i = 0;
while ((cp = *v++) != 0) {
int c;
while (c = *cp++)
cmd[i++] = (char)c;
if (*v)
cmd[i++] = ' ';
}
cmd[i] = '\0';
/* Make upper case */
bs2upcase(cmd);
faket.t_dtyp = NODE_COMMAND;
faket.t_dflg = F_BACKQ|F_STDERR;
faket.t_dlef = 0;
faket.t_drit = 0;
faket.t_dspr = 0;
faket.t_dcom = fakecom;
fakecom[0] = (Char *)STRbs2cmd;
fakecom[1] = 0;
mypipe(pvec);
cleanup_push(&pvec[0], open_cleanup);
cleanup_push(&pvec[1], open_cleanup);
if (pfork(&faket, -1) == 0) {
sigset_t set;
/* child */
xclose(pvec[0]);
(void) dmove(pvec[1], 1);
(void) dmove(SHDIAG, 2);
initdesc();
sigemptyset(&set);
sigaddset(&set, SIGINT);
(void)sigprocmask(SIG_UNBLOCK, &set, NULL);
#ifdef SIGTSTP
signal(SIGTSTP, SIG_IGN);
#endif
#ifdef SIGTTIN
signal(SIGTTIN, SIG_IGN);
#endif
#ifdef SIGTTOU
signal(SIGTTOU, SIG_IGN);
#endif
xexit(bs2cmdlist(cmd));
}
cleanup_until(&pvec[1]);
for(;;) {
int old_pintr_disabled;
if (setintr)
pintr_push_enable(&old_pintr_disabled);
icnt = xread(pvec[0], tibuf, sizeof(tibuf));
if (setintr)
cleanup_until(&old_pintr_disabled);
if (icnt <= 0)
break;
for (i = 0; i < icnt; i++)
xputchar((unsigned char) tibuf[i]);
}
cleanup_until(&pvec[0]);
pwait();
flush();
cleanup_until(globbed);
}
/*
* Perform io redirection.
* We may or maynot be forked here.
*/
static void
doio(struct command *t, int *pipein, int *pipeout)
{
int fd;
Char *cp;
int flags = t->t_dflg;
if (didfds || (flags & F_REPEAT))
return;
if ((flags & F_READ) == 0) {/* F_READ already done */
if (t->t_dlef) {
char tmp[PATH_MAX];
/*
* so < /dev/std{in,out,err} work
*/
(void) dcopy(SHIN, 0);
(void) dcopy(SHOUT, 1);
(void) dcopy(SHERR, 2);
cp = splicepipe(t, t->t_dlef);
strlcpy(tmp, short2str(cp), sizeof tmp);
xfree(cp);
if ((fd = open(tmp, O_RDONLY)) < 0)
stderror(ERR_SYSTEM, tmp, strerror(errno));
(void) dmove(fd, 0);
}
else if (flags & F_PIPEIN) {
(void) close(0);
(void) dup(pipein[0]);
(void) close(pipein[0]);
(void) close(pipein[1]);
}
else if ((flags & F_NOINTERRUPT) && tpgrp == -1) {
(void) close(0);
(void) open(_PATH_DEVNULL, O_RDONLY);
}
else {
(void) close(0);
(void) dup(OLDSTD);
(void) ioctl(STDIN_FILENO, FIONCLEX, NULL);
}
}
if (t->t_drit) {
char tmp[PATH_MAX];
cp = splicepipe(t, t->t_drit);
strlcpy(tmp, short2str(cp), sizeof tmp);
xfree(cp);
/*
* so > /dev/std{out,err} work
*/
(void) dcopy(SHOUT, 1);
(void) dcopy(SHERR, 2);
if ((flags & F_APPEND) &&
(fd = open(tmp, O_WRONLY | O_APPEND)) >= 0);
else {
if (!(flags & F_OVERWRITE) && adrof(STRnoclobber)) {
if (flags & F_APPEND)
stderror(ERR_SYSTEM, tmp, strerror(errno));
chkclob(tmp);
}
if ((fd = open(tmp, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0)
stderror(ERR_SYSTEM, tmp, strerror(errno));
}
(void) dmove(fd, 1);
}
else if (flags & F_PIPEOUT) {
(void) close(1);
(void) dup(pipeout[1]);
}
else {
(void) close(1);
(void) dup(SHOUT);
(void) ioctl(STDOUT_FILENO, FIONCLEX, NULL);
}
(void) close(2);
if (flags & F_STDERR) {
(void) dup(1);
}
else {
(void) dup(SHERR);
(void) ioctl(STDERR_FILENO, FIONCLEX, NULL);
}
didfds = 1;
}
