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0785e8cedc
freebsd/contrib/tcsh/sh.func.c
Dmitry Chagin 55b903e2e0 MFV r315950: 
Update vendor/tcsh to git b605cb561d

Vendor changes:

1. PR/471: Daiki Ueno: Delay interpreting arginp until we've processed
our startup files (which can change the NLS environment).

2. Fix type of read in prompt confirmation (eg. rmstar) (David Kaspar).

3. Fix out of bounds read (Brooks Davis)
(reproduce by starting tcsh and hitting tab at the prompt).

4. Don't play pointer tricks that are undefined in modern c
(Brooks Davis).
2017-03-25 14:14:11 +00:00

2752 lines
58 KiB
C
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/* $Header: /p/tcsh/cvsroot/tcsh/sh.func.c,v 3.176 2016/10/18 17:26:42 christos Exp $ */
/*
* sh.func.c: csh builtin functions
*/
/*-
* Copyright (c) 1980, 1991 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "sh.h"
RCSID("$tcsh: sh.func.c,v 3.176 2016/10/18 17:26:42 christos Exp $")
#include "ed.h"
#include "tw.h"
#include "tc.h"
#ifdef WINNT_NATIVE
#include "nt.const.h"
#endif /* WINNT_NATIVE */
#if defined (NLS_CATALOGS) && defined(HAVE_ICONV)
static iconv_t catgets_iconv; /* Or (iconv_t)-1 */
#endif
/*
* C shell
*/
extern int MapsAreInited;
extern int NLSMapsAreInited;
extern int GotTermCaps;
static int zlast = -1;
static void islogin (void);
static void preread (void);
static void doagain (void);
static const char *isrchx (int);
static void search (int, int, Char *);
static int getword (struct Strbuf *);
static struct wordent *histgetword (struct wordent *);
static void toend (void);
static void xecho (int, Char **);
static int islocale_var (Char *);
static void wpfree (struct whyle *);
const struct biltins *
isbfunc(struct command *t)
{
Char *cp = t->t_dcom[0];
const struct biltins *bp, *bp1, *bp2;
static struct biltins label = {"", dozip, 0, 0};
static struct biltins foregnd = {"%job", dofg1, 0, 0};
static struct biltins backgnd = {"%job &", dobg1, 0, 0};
/*
* We never match a builtin that has quoted the first
* character; this has been the traditional way to escape
* builtin commands.
*/
if (*cp & QUOTE)
return NULL;
if (*cp != ':' && lastchr(cp) == ':') {
label.bname = short2str(cp);
return (&label);
}
if (*cp == '%') {
if (t->t_dflg & F_AMPERSAND) {
t->t_dflg &= ~F_AMPERSAND;
backgnd.bname = short2str(cp);
return (&backgnd);
}
foregnd.bname = short2str(cp);
return (&foregnd);
}
#ifdef WARP
/*
* This is a perhaps kludgy way to determine if the warp builtin is to be
* acknowledged or not. If checkwarp() fails, then we are to assume that
* the warp command is invalid, and carry on as we would handle any other
* non-builtin command. -- JDK 2/4/88
*/
if (eq(STRwarp, cp) && !checkwarp()) {
return (0); /* this builtin disabled */
}
#endif /* WARP */
/*
* Binary search Bp1 is the beginning of the current search range. Bp2 is
* one past the end.
*/
for (bp1 = bfunc, bp2 = bfunc + nbfunc; bp1 < bp2;) {
int i;
bp = bp1 + ((bp2 - bp1) >> 1);
if ((i = ((char) *cp) - *bp->bname) == 0 &&
(i = StrQcmp(cp, str2short(bp->bname))) == 0)
return bp;
if (i < 0)
bp2 = bp;
else
bp1 = bp + 1;
}
#ifdef WINNT_NATIVE
return nt_check_additional_builtins(cp);
#endif /*WINNT_NATIVE*/
return (0);
}
void
func(struct command *t, const struct biltins *bp)
{
int i;
xechoit(t->t_dcom);
setname(bp->bname);
i = blklen(t->t_dcom) - 1;
if (i < bp->minargs)
stderror(ERR_NAME | ERR_TOOFEW);
if (i > bp->maxargs)
stderror(ERR_NAME | ERR_TOOMANY);
(*bp->bfunct) (t->t_dcom, t);
}
/*ARGSUSED*/
void
doonintr(Char **v, struct command *c)
{
Char *cp;
Char *vv = v[1];
USE(c);
if (parintr.sa_handler == SIG_IGN)
return;
if (setintr && intty)
stderror(ERR_NAME | ERR_TERMINAL);
cp = gointr;
gointr = 0;
xfree(cp);
if (vv == 0) {
if (setintr)
sigset_interrupting(SIGINT, queue_pintr);
else
(void) signal(SIGINT, SIG_DFL);
gointr = 0;
}
else if (eq((vv = strip(vv)), STRminus)) {
(void) signal(SIGINT, SIG_IGN);
gointr = Strsave(STRminus);
}
else {
gointr = Strsave(vv);
sigset_interrupting(SIGINT, queue_pintr);
}
}
/*ARGSUSED*/
void
donohup(Char **v, struct command *c)
{
USE(c);
USE(v);
if (intty)
stderror(ERR_NAME | ERR_TERMINAL);
if (setintr == 0) {
(void) signal(SIGHUP, SIG_IGN);
phup_disabled = 1;
#ifdef CC
submit(getpid());
#endif /* CC */
}
}
/*ARGSUSED*/
void
dohup(Char **v, struct command *c)
{
USE(c);
USE(v);
if (intty)
stderror(ERR_NAME | ERR_TERMINAL);
if (setintr == 0)
(void) signal(SIGHUP, SIG_DFL);
}
/*ARGSUSED*/
void
dozip(Char **v, struct command *c)
{
USE(c);
USE(v);
}
/*ARGSUSED*/
void
dofiletest(Char **v, struct command *c)
{
Char **globbed, **fileptr, *ftest, *res;
USE(c);
if (*(ftest = *++v) != '-')
stderror(ERR_NAME | ERR_FILEINQ);
++v;
v = glob_all_or_error(v);
globbed = v;
cleanup_push(globbed, blk_cleanup);
while (*(fileptr = v++) != '\0') {
res = filetest(ftest, &fileptr, 0);
cleanup_push(res, xfree);
xprintf("%S", res);
cleanup_until(res);
if (*v)
xprintf(" ");
}
xprintf("\n");
cleanup_until(globbed);
}
void
prvars(void)
{
plist(&shvhed, VAR_ALL);
}
/*ARGSUSED*/
void
doalias(Char **v, struct command *c)
{
struct varent *vp;
Char *p;
USE(c);
v++;
p = *v++;
if (p == 0)
plist(&aliases, VAR_ALL);
else if (*v == 0) {
vp = adrof1(strip(p), &aliases);
if (vp && vp->vec)
blkpr(vp->vec), xputchar('\n');
}
else {
if (eq(p, STRalias) || eq(p, STRunalias)) {
setname(short2str(p));
stderror(ERR_NAME | ERR_DANGER);
}
set1(strip(p), saveblk(v), &aliases, VAR_READWRITE);
tw_cmd_free();
}
}
/*ARGSUSED*/
void
unalias(Char **v, struct command *c)
{
USE(c);
unset1(v, &aliases);
tw_cmd_free();
}
/*ARGSUSED*/
void
dologout(Char **v, struct command *c)
{
USE(c);
USE(v);
islogin();
goodbye(NULL, NULL);
}
/*ARGSUSED*/
void
dologin(Char **v, struct command *c)
{
#ifdef WINNT_NATIVE
USE(c);
USE(v);
#else /* !WINNT_NATIVE */
char **p = short2blk(v);
USE(c);
cleanup_push((Char **)p, blk_cleanup);
islogin();
rechist(NULL, adrof(STRsavehist) != NULL);
sigaction(SIGTERM, &parterm, NULL);
(void) execv(_PATH_BIN_LOGIN, p);
(void) execv(_PATH_USRBIN_LOGIN, p);
cleanup_until((Char **)p);
untty();
xexit(1);
#endif /* !WINNT_NATIVE */
}
#ifdef NEWGRP
/*ARGSUSED*/
void
donewgrp(Char **v, struct command *c)
{
char **p;
if (chkstop == 0 && setintr)
panystop(0);
sigaction(SIGTERM, &parterm, NULL);
p = short2blk(v);
/*
* From Beto Appleton (beto@aixwiz.austin.ibm.com)
* Newgrp can take 2 arguments...
*/
(void) execv(_PATH_BIN_NEWGRP, p);
(void) execv(_PATH_USRBIN_NEWGRP, p);
blkfree((Char **) p);
untty();
xexit(1);
}
#endif /* NEWGRP */
static void
islogin(void)
{
if (chkstop == 0 && setintr)
panystop(0);
if (loginsh)
return;
stderror(ERR_NOTLOGIN);
}
void
doif(Char **v, struct command *kp)
{
int i;
Char **vv;
v++;
i = noexec ? 1 : expr(&v);
vv = v;
if (*vv == NULL)
stderror(ERR_NAME | ERR_EMPTYIF);
if (eq(*vv, STRthen)) {
if (*++vv)
stderror(ERR_NAME | ERR_IMPRTHEN);
setname(short2str(STRthen));
/*
* If expression was zero, then scan to else , otherwise just fall into
* following code.
*/
if (!i)
search(TC_IF, 0, NULL);
return;
}
/*
* Simple command attached to this if. Left shift the node in this tree,
* munging it so we can reexecute it.
*/
if (i) {
lshift(kp->t_dcom, vv - kp->t_dcom);
reexecute(kp);
donefds();
}
}
/*
* Reexecute a command, being careful not
* to redo i/o redirection, which is already set up.
*/
void
reexecute(struct command *kp)
{
kp->t_dflg &= F_SAVE;
kp->t_dflg |= F_REPEAT;
/*
* If tty is still ours to arbitrate, arbitrate it; otherwise dont even set
* pgrp's as the jobs would then have no way to get the tty (we can't give
* it to them, and our parent wouldn't know their pgrp, etc.
*/
execute(kp, (tpgrp > 0 ? tpgrp : -1), NULL, NULL, TRUE);
}
/*ARGSUSED*/
void
doelse (Char **v, struct command *c)
{
USE(c);
USE(v);
if (!noexec)
search(TC_ELSE, 0, NULL);
}
/*ARGSUSED*/
void
dogoto(Char **v, struct command *c)
{
Char *lp;
USE(c);
lp = globone(v[1], G_ERROR);
cleanup_push(lp, xfree);
if (!noexec)
gotolab(lp);
cleanup_until(lp);
}
void
gotolab(Char *lab)
{
struct whyle *wp;
/*
* While we still can, locate any unknown ends of existing loops. This
* obscure code is the WORST result of the fact that we don't really parse.
*/
zlast = TC_GOTO;
for (wp = whyles; wp; wp = wp->w_next)
if (wp->w_end.type == TCSH_F_SEEK && wp->w_end.f_seek == 0) {
search(TC_BREAK, 0, NULL);
btell(&wp->w_end);
}
else {
bseek(&wp->w_end);
}
search(TC_GOTO, 0, lab);
/*
* Eliminate loops which were exited.
*/
wfree();
}
/*ARGSUSED*/
void
doswitch(Char **v, struct command *c)
{
Char *cp, *lp;
USE(c);
v++;
if (!*v || *(*v++) != '(')
stderror(ERR_SYNTAX);
cp = **v == ')' ? STRNULL : *v++;
if (*(*v++) != ')')
v--;
if (*v)
stderror(ERR_SYNTAX);
lp = globone(cp, G_ERROR);
cleanup_push(lp, xfree);
if (!noexec)
search(TC_SWITCH, 0, lp);
cleanup_until(lp);
}
/*ARGSUSED*/
void
dobreak(Char **v, struct command *c)
{
USE(v);
USE(c);
if (whyles == NULL)
stderror(ERR_NAME | ERR_NOTWHILE);
if (!noexec)
toend();
}
/*ARGSUSED*/
void
doexit(Char **v, struct command *c)
{
USE(c);
if (chkstop == 0 && (intty || intact) && evalvec == 0)
panystop(0);
/*
* Don't DEMAND parentheses here either.
*/
v++;
if (*v) {
setv(STRstatus, putn(expr(&v)), VAR_READWRITE);
if (*v)
stderror(ERR_NAME | ERR_EXPRESSION);
}
btoeof();
#if 0
if (intty)
#endif
/* Always close, why only on ttys? */
xclose(SHIN);
}
/*ARGSUSED*/
void
doforeach(Char **v, struct command *c)
{
Char *cp, *sp;
struct whyle *nwp;
int gflag;
USE(c);
v++;
cp = sp = strip(*v);
if (!letter(*cp))
stderror(ERR_NAME | ERR_VARBEGIN);
do {
cp++;
} while (alnum(*cp));
if (*cp != '\0')
stderror(ERR_NAME | ERR_VARALNUM);
cp = *v++;
if (v[0][0] != '(' || v[blklen(v) - 1][0] != ')')
stderror(ERR_NAME | ERR_NOPAREN);
v++;
gflag = tglob(v);
if (gflag) {
v = globall(v, gflag);
if (v == 0 && !noexec)
stderror(ERR_NAME | ERR_NOMATCH);
}
else {
v = saveblk(v);
trim(v);
}
nwp = xcalloc(1, sizeof *nwp);
nwp->w_fe = nwp->w_fe0 = v;
btell(&nwp->w_start);
nwp->w_fename = Strsave(cp);
nwp->w_next = whyles;
nwp->w_end.type = TCSH_F_SEEK;
whyles = nwp;
/*
* Pre-read the loop so as to be more comprehensible to a terminal user.
*/
zlast = TC_FOREACH;
if (intty)
preread();
if (!noexec)
doagain();
}
/*ARGSUSED*/
void
dowhile(Char **v, struct command *c)
{
int status;
int again = whyles != 0 &&
SEEKEQ(&whyles->w_start, &lineloc) &&
whyles->w_fename == 0;
USE(c);
v++;
/*
* Implement prereading here also, taking care not to evaluate the
* expression before the loop has been read up from a terminal.
*/
if (noexec)
status = 0;
else if (intty && !again)
status = !exp0(&v, 1);
else
status = !expr(&v);
if (*v && !noexec)
stderror(ERR_NAME | ERR_EXPRESSION);
if (!again) {
struct whyle *nwp = xcalloc(1, sizeof(*nwp));
nwp->w_start = lineloc;
nwp->w_end.type = TCSH_F_SEEK;
nwp->w_end.f_seek = 0;
nwp->w_end.a_seek = 0;
nwp->w_next = whyles;
whyles = nwp;
zlast = TC_WHILE;
if (intty) {
/*
* The tty preread
*/
preread();
doagain();
return;
}
}
if (status)
/* We ain't gonna loop no more, no more! */
toend();
}
static void
preread(void)
{
int old_pintr_disabled;
whyles->w_end.type = TCSH_I_SEEK;
if (setintr)
pintr_push_enable(&old_pintr_disabled);
search(TC_BREAK, 0, NULL); /* read the expression in */
if (setintr)
cleanup_until(&old_pintr_disabled);
btell(&whyles->w_end);
}
/*ARGSUSED*/
void
doend(Char **v, struct command *c)
{
USE(v);
USE(c);
if (!whyles)
stderror(ERR_NAME | ERR_NOTWHILE);
btell(&whyles->w_end);
if (!noexec)
doagain();
}
/*ARGSUSED*/
void
docontin(Char **v, struct command *c)
{
USE(v);
USE(c);
if (!whyles)
stderror(ERR_NAME | ERR_NOTWHILE);
if (!noexec)
doagain();
}
static void
doagain(void)
{
/* Repeating a while is simple */
if (whyles->w_fename == 0) {
bseek(&whyles->w_start);
return;
}
/*
* The foreach variable list actually has a spurious word ")" at the end of
* the w_fe list. Thus we are at the of the list if one word beyond this
* is 0.
*/
if (!whyles->w_fe[1]) {
dobreak(NULL, NULL);
return;
}
setv(whyles->w_fename, quote(Strsave(*whyles->w_fe++)), VAR_READWRITE);
bseek(&whyles->w_start);
}
void
dorepeat(Char **v, struct command *kp)
{
int i = 1;
do {
i *= getn(v[1]);
lshift(v, 2);
} while (v[0] != NULL && Strcmp(v[0], STRrepeat) == 0);
if (noexec)
i = 1;
if (setintr) {
pintr_disabled++;
cleanup_push(&pintr_disabled, disabled_cleanup);
}
while (i > 0) {
if (setintr && pintr_disabled == 1) {
cleanup_until(&pintr_disabled);
pintr_disabled++;
cleanup_push(&pintr_disabled, disabled_cleanup);
}
reexecute(kp);
--i;
}
if (setintr && pintr_disabled == 1)
cleanup_until(&pintr_disabled);
donefds();
}
/*ARGSUSED*/
void
doswbrk(Char **v, struct command *c)
{
USE(v);
USE(c);
if (!noexec)
search(TC_BRKSW, 0, NULL);
}
int
srchx(Char *cp)
{
struct srch *sp, *sp1, *sp2;
int i;
/*
* Ignore keywords inside heredocs
*/
if (inheredoc)
return -1;
/*
* Binary search Sp1 is the beginning of the current search range. Sp2 is
* one past the end.
*/
for (sp1 = srchn, sp2 = srchn + nsrchn; sp1 < sp2;) {
sp = sp1 + ((sp2 - sp1) >> 1);
if ((i = *cp - *sp->s_name) == 0 &&
(i = Strcmp(cp, str2short(sp->s_name))) == 0)
return sp->s_value;
if (i < 0)
sp2 = sp;
else
sp1 = sp + 1;
}
return (-1);
}
static const char *
isrchx(int n)
{
struct srch *sp, *sp2;
for (sp = srchn, sp2 = srchn + nsrchn; sp < sp2; sp++)
if (sp->s_value == n)
return (sp->s_name);
return ("");
}
static int Stype;
static Char *Sgoal;
static void
search(int type, int level, Char *goal)
{
struct Strbuf word = Strbuf_INIT;
Char *cp;
struct whyle *wp;
int wlevel = 0;
struct wordent *histent = NULL, *ohistent = NULL;
Stype = type;
Sgoal = goal;
if (type == TC_GOTO) {
struct Ain a;
a.type = TCSH_F_SEEK;
a.f_seek = 0;
a.a_seek = 0;
bseek(&a);
}
cleanup_push(&word, Strbuf_cleanup);
do {
if (intty) {
histent = xmalloc(sizeof(*histent));
ohistent = xmalloc(sizeof(*histent));
ohistent->word = STRNULL;
ohistent->next = histent;
histent->prev = ohistent;
}
if (intty && fseekp == feobp && aret == TCSH_F_SEEK)
printprompt(1, isrchx(type == TC_BREAK ? zlast : type));
/* xprintf("? "), flush(); */
(void) getword(&word);
Strbuf_terminate(&word);
if (intty && Strlen(word.s) > 0) {
histent->word = Strsave(word.s);
histent->next = xmalloc(sizeof(*histent));
histent->next->prev = histent;
histent = histent->next;
}
switch (srchx(word.s)) {
case TC_ELSE:
if (level == 0 && type == TC_IF)
goto end;
break;
case TC_IF:
while (getword(&word)) {
if (intty) {
histent->word = Strsave(word.s);
histent->next = xmalloc(sizeof(*histent));
histent->next->prev = histent;
histent = histent->next;
}
continue;
}
if ((type == TC_IF || type == TC_ELSE) &&
eq(word.s, STRthen))
level++;
break;
case TC_ENDIF:
if (type == TC_IF || type == TC_ELSE)
level--;
break;
case TC_FOREACH:
case TC_WHILE:
wlevel++;
if (type == TC_BREAK)
level++;
break;
case TC_END:
if (type == TC_BRKSW) {
if (wlevel == 0) {
wp = whyles;
if (wp) {
whyles = wp->w_next;
wpfree(wp);
}
}
}
if (type == TC_BREAK)
level--;
wlevel--;
break;
case TC_SWITCH:
if (type == TC_SWITCH || type == TC_BRKSW)
level++;
break;
case TC_ENDSW:
if (type == TC_SWITCH || type == TC_BRKSW)
level--;
break;
case TC_LABEL:
if (type == TC_GOTO && getword(&word) && eq(word.s, goal))
level = -1;
break;
default:
if (type != TC_GOTO && (type != TC_SWITCH || level != 0))
break;
if (word.len == 0 || word.s[word.len - 1] != ':')
break;
word.s[--word.len] = 0;
if ((type == TC_GOTO && eq(word.s, goal)) ||
(type == TC_SWITCH && eq(word.s, STRdefault)))
level = -1;
break;
case TC_CASE:
if (type != TC_SWITCH || level != 0)
break;
(void) getword(&word);
if (word.len != 0 && word.s[word.len - 1] == ':')
word.s[--word.len] = 0;
cp = strip(Dfix1(word.s));
cleanup_push(cp, xfree);
if (Gmatch(goal, cp))
level = -1;
cleanup_until(cp);
break;
case TC_DEFAULT:
if (type == TC_SWITCH && level == 0)
level = -1;
break;
}
if (intty) {
ohistent->prev = histgetword(histent);
ohistent->prev->next = ohistent;
savehist(ohistent, 0);
freelex(ohistent);
xfree(ohistent);
} else
(void) getword(NULL);
} while (level >= 0);
end:
cleanup_until(&word);
}
static struct wordent *
histgetword(struct wordent *histent)
{
int first;
eChar c, d;
int e;
struct Strbuf *tmp;
tmp = xmalloc(sizeof(*tmp));
tmp->size = 0;
tmp->s = NULL;
c = readc(1);
d = 0;
e = 0;
for (;;) {
tmp->len = 0;
Strbuf_terminate (tmp);
while (c == ' ' || c == '\t')
c = readc(1);
if (c == '#')
do
c = readc(1);
while (c != CHAR_ERR && c != '\n');
if (c == CHAR_ERR)
goto past;
if (c == '\n')
goto nl;
unreadc(c);
first = 1;
do {
e = (c == '\\');
c = readc(1);
if (c == '\\' && !e) {
if ((c = readc(1)) == '\n') {
e = 1;
c = ' ';
} else {
unreadc(c);
c = '\\';
}
}
if ((c == '\'' || c == '"') && !e) {
if (d == 0)
d = c;
else if (d == c)
d = 0;
}
if (c == CHAR_ERR)
goto past;
Strbuf_append1(tmp, (Char) c);
if (!first && !d && c == '(' && !e) {
break;
}
first = 0;
} while (d || e || (c != ' ' && c != '\t' && c != '\n'));
tmp->len--;
if (tmp->len) {
Strbuf_terminate(tmp);
histent->word = Strsave(tmp->s);
histent->next = xmalloc(sizeof (*histent));
histent->next->prev = histent;
histent = histent->next;
}
if (c == '\n') {
nl:
tmp->len = 0;
Strbuf_append1(tmp, (Char) c);
Strbuf_terminate(tmp);
histent->word = Strsave(tmp->s);
return histent;
}
}
past:
switch (Stype) {
case TC_IF:
stderror(ERR_NAME | ERR_NOTFOUND, "then/endif");
break;
case TC_ELSE:
stderror(ERR_NAME | ERR_NOTFOUND, "endif");
break;
case TC_BRKSW:
case TC_SWITCH:
stderror(ERR_NAME | ERR_NOTFOUND, "endsw");
break;
case TC_BREAK:
stderror(ERR_NAME | ERR_NOTFOUND, "end");
break;
case TC_GOTO:
setname(short2str(Sgoal));
stderror(ERR_NAME | ERR_NOTFOUND, "label");
break;
default:
break;
}
/* NOTREACHED */
return NULL;
}
static int
getword(struct Strbuf *wp)
{
int found = 0, first;
eChar c, d;
if (wp)
wp->len = 0;
c = readc(1);
d = 0;
do {
while (c == ' ' || c == '\t')
c = readc(1);
if (c == '#')
do
c = readc(1);
while (c != CHAR_ERR && c != '\n');
if (c == CHAR_ERR)
goto past;
if (c == '\n') {
if (wp)
break;
return (0);
}
unreadc(c);
found = 1;
first = 1;
do {
c = readc(1);
if (c == '\\' && (c = readc(1)) == '\n')
c = ' ';
if (c == '\'' || c == '"') {
if (d == 0)
d = c;
else if (d == c)
d = 0;
}
if (c == CHAR_ERR)
goto past;
if (wp)
Strbuf_append1(wp, (Char) c);
if (!d && c == ')') {
if (!first && wp) {
goto past_word_end;
} else {
if (wp) {
wp->len = 1;
Strbuf_terminate(wp);
}
return found;
}
}
if (!first && !d && c == '(') {
if (wp)
goto past_word_end;
else
break;
}
first = 0;
} while ((d || (c != ' ' && c != '\t')) && c != '\n');
} while (wp == 0);
past_word_end:
unreadc(c);
if (found) {
wp->len--;
Strbuf_terminate(wp);
}
return (found);
past:
switch (Stype) {
case TC_IF:
stderror(ERR_NAME | ERR_NOTFOUND, "then/endif");
break;
case TC_ELSE:
stderror(ERR_NAME | ERR_NOTFOUND, "endif");
break;
case TC_BRKSW:
case TC_SWITCH:
stderror(ERR_NAME | ERR_NOTFOUND, "endsw");
break;
case TC_BREAK:
stderror(ERR_NAME | ERR_NOTFOUND, "end");
break;
case TC_GOTO:
setname(short2str(Sgoal));
stderror(ERR_NAME | ERR_NOTFOUND, "label");
break;
default:
break;
}
/* NOTREACHED */
return (0);
}
static void
toend(void)
{
if (whyles->w_end.type == TCSH_F_SEEK && whyles->w_end.f_seek == 0) {
search(TC_BREAK, 0, NULL);
btell(&whyles->w_end);
whyles->w_end.f_seek--;
}
else {
bseek(&whyles->w_end);
}
wfree();
}
static void
wpfree(struct whyle *wp)
{
if (wp->w_fe0)
blkfree(wp->w_fe0);
xfree(wp->w_fename);
xfree(wp);
}
void
wfree(void)
{
struct Ain o;
struct whyle *nwp;
#ifdef lint
nwp = NULL; /* sun lint is dumb! */
#endif
#ifdef FDEBUG
static const char foo[] = "IAFE";
#endif /* FDEBUG */
btell(&o);
#ifdef FDEBUG
xprintf("o->type %c o->a_seek %d o->f_seek %d\n",
foo[o.type + 1], o.a_seek, o.f_seek);
#endif /* FDEBUG */
for (; whyles; whyles = nwp) {
struct whyle *wp = whyles;
nwp = wp->w_next;
#ifdef FDEBUG
xprintf("start->type %c start->a_seek %d start->f_seek %d\n",
foo[wp->w_start.type+1],
wp->w_start.a_seek, wp->w_start.f_seek);
xprintf("end->type %c end->a_seek %d end->f_seek %d\n",
foo[wp->w_end.type + 1], wp->w_end.a_seek, wp->w_end.f_seek);
#endif /* FDEBUG */
/*
* XXX: We free loops that have different seek types.
*/
if (wp->w_end.type != TCSH_I_SEEK && wp->w_start.type == wp->w_end.type &&
wp->w_start.type == o.type) {
if (wp->w_end.type == TCSH_F_SEEK) {
if (o.f_seek >= wp->w_start.f_seek &&
(wp->w_end.f_seek == 0 || o.f_seek < wp->w_end.f_seek))
break;
}
else {
if (o.a_seek >= wp->w_start.a_seek &&
(wp->w_end.a_seek == 0 || o.a_seek < wp->w_end.a_seek))
break;
}
}
wpfree(wp);
}
}
/*ARGSUSED*/
void
doecho(Char **v, struct command *c)
{
USE(c);
xecho(' ', v);
}
/*ARGSUSED*/
void
doglob(Char **v, struct command *c)
{
USE(c);
xecho(0, v);
flush();
}
static void
xecho(int sep, Char **v)
{
Char *cp, **globbed = NULL;
int nonl = 0;
int echo_style = ECHO_STYLE;
struct varent *vp;
if ((vp = adrof(STRecho_style)) != NULL && vp->vec != NULL &&
vp->vec[0] != NULL) {
if (Strcmp(vp->vec[0], STRbsd) == 0)
echo_style = BSD_ECHO;
else if (Strcmp(vp->vec[0], STRsysv) == 0)
echo_style = SYSV_ECHO;
else if (Strcmp(vp->vec[0], STRboth) == 0)
echo_style = BOTH_ECHO;
else if (Strcmp(vp->vec[0], STRnone) == 0)
echo_style = NONE_ECHO;
}
v++;
if (*v == 0)
goto done;
if (setintr) {
int old_pintr_disabled;
pintr_push_enable(&old_pintr_disabled);
v = glob_all_or_error(v);
cleanup_until(&old_pintr_disabled);
} else {
v = glob_all_or_error(v);
}
globbed = v;
if (globbed != NULL)
cleanup_push(globbed, blk_cleanup);
if ((echo_style & BSD_ECHO) != 0 && sep == ' ' && *v && eq(*v, STRmn))
nonl++, v++;
while ((cp = *v++) != 0) {
Char c;
if (setintr) {
int old_pintr_disabled;
pintr_push_enable(&old_pintr_disabled);
cleanup_until(&old_pintr_disabled);
}
while ((c = *cp++) != 0) {
if ((echo_style & SYSV_ECHO) != 0 && c == '\\') {
switch (c = *cp++) {
case 'a':
c = '\a';
break;
case 'b':
c = '\b';
break;
case 'c':
nonl = 1;
goto done;
case 'e':
#if 0 /* Windows does not understand \e */
c = '\e';
#else
c = CTL_ESC('\033');
#endif
break;
case 'f':
c = '\f';
break;
case 'n':
c = '\n';
break;
case 'r':
c = '\r';
break;
case 't':
c = '\t';
break;
case 'v':
c = '\v';
break;
case '\\':
c = '\\';
break;
case '0':
c = 0;
if (*cp >= '0' && *cp < '8')
c = c * 8 + *cp++ - '0';
if (*cp >= '0' && *cp < '8')
c = c * 8 + *cp++ - '0';
if (*cp >= '0' && *cp < '8')
c = c * 8 + *cp++ - '0';
break;
case '\0':
c = '\\';
cp--;
break;
default:
xputchar('\\' | QUOTE);
break;
}
}
xputwchar(c | QUOTE);
}
if (*v)
xputchar(sep | QUOTE);
}
done:
if (sep && nonl == 0)
xputchar('\n');
else
flush();
if (globbed != NULL)
cleanup_until(globbed);
}
/* check whether an environment variable should invoke 'set_locale()' */
static int
islocale_var(Char *var)
{
static Char *locale_vars[] = {
STRLANG, STRLC_ALL, STRLC_CTYPE, STRLC_NUMERIC,
STRLC_TIME, STRLC_COLLATE, STRLC_MESSAGES, STRLC_MONETARY, 0
};
Char **v;
for (v = locale_vars; *v; ++v)
if (eq(var, *v))
return 1;
return 0;
}
static void
xlate_cr_cleanup(void *dummy)
{
USE(dummy);
xlate_cr = 0;
}
/*ARGSUSED*/
void
doprintenv(Char **v, struct command *c)
{
Char *e;
USE(c);
v++;
if (*v == 0) {
Char **ep;
xlate_cr = 1;
cleanup_push(&xlate_cr, xlate_cr_cleanup);
for (ep = STR_environ; *ep; ep++) {
if (setintr) {
int old_pintr_disabled;
pintr_push_enable(&old_pintr_disabled);
cleanup_until(&old_pintr_disabled);
}
xprintf("%S\n", *ep);
}
cleanup_until(&xlate_cr);
}
else if ((e = tgetenv(*v)) != NULL) {
int old_output_raw;
old_output_raw = output_raw;
output_raw = 1;
cleanup_push(&old_output_raw, output_raw_restore);
xprintf("%S\n", e);
cleanup_until(&old_output_raw);
}
else
setcopy(STRstatus, STR1, VAR_READWRITE);
}
/* from "Karl Berry." <karl%mote.umb.edu@relay.cs.net> -- for NeXT things
(and anything else with a modern compiler) */
/*ARGSUSED*/
void
dosetenv(Char **v, struct command *c)
{
Char *vp, *lp;
USE(c);
if (*++v == 0) {
doprintenv(--v, 0);
return;
}
vp = *v++;
lp = vp;
if (!letter(*lp))
stderror(ERR_NAME | ERR_VARBEGIN);
do {
lp++;
} while (alnum(*lp) || *lp == '.');
if (*lp != '\0')
stderror(ERR_NAME | ERR_VARALNUM);
if ((lp = *v++) == 0)
lp = STRNULL;
lp = globone(lp, G_APPEND);
cleanup_push(lp, xfree);
tsetenv(vp, lp);
if (eq(vp, STRKPATH)) {
importpath(lp);
dohash(NULL, NULL);
cleanup_until(lp);
return;
}
#ifdef apollo
if (eq(vp, STRSYSTYPE)) {
dohash(NULL, NULL);
cleanup_until(lp);
return;
}
#endif /* apollo */
/* dspkanji/dspmbyte autosetting */
/* PATCH IDEA FROM Issei.Suzuki VERY THANKS */
#if defined(DSPMBYTE)
if(eq(vp, STRLANG) && !adrof(CHECK_MBYTEVAR)) {
autoset_dspmbyte(lp);
}
#endif
if (islocale_var(vp)) {
#ifdef NLS
int k;
# ifdef SETLOCALEBUG
dont_free = 1;
# endif /* SETLOCALEBUG */
(void) setlocale(LC_ALL, "");
# ifdef LC_COLLATE
(void) setlocale(LC_COLLATE, "");
# endif
# ifdef LC_CTYPE
(void) setlocale(LC_CTYPE, ""); /* for iscntrl */
# endif /* LC_CTYPE */
# if defined(AUTOSET_KANJI)
autoset_kanji();
# endif /* AUTOSET_KANJI */
# ifdef NLS_CATALOGS
# ifdef LC_MESSAGES
(void) setlocale(LC_MESSAGES, "");
# endif /* LC_MESSAGES */
nlsclose();
nlsinit();
# endif /* NLS_CATALOGS */
# ifdef SETLOCALEBUG
dont_free = 0;
# endif /* SETLOCALEBUG */
# ifdef STRCOLLBUG
fix_strcoll_bug();
# endif /* STRCOLLBUG */
tw_cmd_free(); /* since the collation sequence has changed */
for (k = 0200; k <= 0377 && !Isprint(CTL_ESC(k)); k++)
continue;
AsciiOnly = MB_CUR_MAX == 1 && k > 0377;
#else /* !NLS */
AsciiOnly = 0;
#endif /* NLS */
NLSMapsAreInited = 0;
ed_Init();
if (MapsAreInited && !NLSMapsAreInited)
ed_InitNLSMaps();
cleanup_until(lp);
return;
}
#ifdef NLS_CATALOGS
if (eq(vp, STRNLSPATH)) {
nlsclose();
nlsinit();
}
#endif
if (eq(vp, STRNOREBIND)) {
NoNLSRebind = 1;
MapsAreInited = 0;
NLSMapsAreInited = 0;
ed_InitMaps();
cleanup_until(lp);
return;
}
#ifdef WINNT_NATIVE
if (eq(vp, STRtcshlang)) {
nlsinit();
cleanup_until(lp);
return;
}
#endif /* WINNT_NATIVE */
if (eq(vp, STRKTERM)) {
char *t;
setv(STRterm, quote(lp), VAR_READWRITE); /* lp memory used here */
cleanup_ignore(lp);
cleanup_until(lp);
t = short2str(lp);
if (noediting && strcmp(t, "unknown") != 0 && strcmp(t,"dumb") != 0) {
editing = 1;
noediting = 0;
setNS(STRedit);
}
GotTermCaps = 0;
ed_Init();
return;
}
if (eq(vp, STRKHOME)) {
Char *canon;
/*
* convert to canonical pathname (possibly resolving symlinks)
*/
canon = dcanon(lp, lp);
cleanup_ignore(lp);
cleanup_until(lp);
cleanup_push(canon, xfree);
setv(STRhome, quote(canon), VAR_READWRITE); /* lp memory used here */
cleanup_ignore(canon);
cleanup_until(canon);
/* fix directory stack for new tilde home */
dtilde();
return;
}
if (eq(vp, STRKSHLVL)) {
setv(STRshlvl, quote(lp), VAR_READWRITE); /* lp memory used here */
cleanup_ignore(lp);
cleanup_until(lp);
return;
}
if (eq(vp, STRKUSER)) {
setv(STRuser, quote(lp), VAR_READWRITE); /* lp memory used here */
cleanup_ignore(lp);
cleanup_until(lp);
return;
}
if (eq(vp, STRKGROUP)) {
setv(STRgroup, quote(lp), VAR_READWRITE); /* lp memory used here */
cleanup_ignore(lp);
cleanup_until(lp);
return;
}
#ifdef COLOR_LS_F
if (eq(vp, STRLS_COLORS)) {
parseLS_COLORS(lp);
cleanup_until(lp);
return;
}
if (eq(vp, STRLSCOLORS)) {
parseLSCOLORS(lp);
cleanup_until(lp);
return;
}
#endif /* COLOR_LS_F */
#ifdef SIG_WINDOW
/*
* Load/Update $LINES $COLUMNS
*/
if ((eq(lp, STRNULL) && (eq(vp, STRLINES) || eq(vp, STRCOLUMNS))) ||
eq(vp, STRTERMCAP)) {
cleanup_until(lp);
check_window_size(1);
return;
}
/*
* Change the size to the one directed by $LINES and $COLUMNS
*/
if (eq(vp, STRLINES) || eq(vp, STRCOLUMNS)) {
#if 0
GotTermCaps = 0;
#endif
cleanup_until(lp);
ed_Init();
return;
}
#endif /* SIG_WINDOW */
cleanup_until(lp);
}
/*ARGSUSED*/
void
dounsetenv(Char **v, struct command *c)
{
Char **ep, *p, *n, *name;
int i, maxi;
USE(c);
/*
* Find the longest environment variable
*/
for (maxi = 0, ep = STR_environ; *ep; ep++) {
for (i = 0, p = *ep; *p && *p != '='; p++, i++)
continue;
if (i > maxi)
maxi = i;
}
name = xmalloc((maxi + 1) * sizeof(Char));
cleanup_push(name, xfree);
while (++v && *v)
for (maxi = 1; maxi;)
for (maxi = 0, ep = STR_environ; *ep; ep++) {
for (n = name, p = *ep; *p && *p != '='; *n++ = *p++)
continue;
*n = '\0';
if (!Gmatch(name, *v))
continue;
maxi = 1;
/* Unset the name. This wasn't being done until
* later but most of the stuff following won't
* work (particularly the setlocale() and getenv()
* stuff) as intended until the name is actually
* removed. (sg)
*/
Unsetenv(name);
if (eq(name, STRNOREBIND)) {
NoNLSRebind = 0;
MapsAreInited = 0;
NLSMapsAreInited = 0;
ed_InitMaps();
}
#ifdef apollo
else if (eq(name, STRSYSTYPE))
dohash(NULL, NULL);
#endif /* apollo */
else if (islocale_var(name)) {
#ifdef NLS
int k;
# ifdef SETLOCALEBUG
dont_free = 1;
# endif /* SETLOCALEBUG */
(void) setlocale(LC_ALL, "");
# ifdef LC_COLLATE
(void) setlocale(LC_COLLATE, "");
# endif
# ifdef LC_CTYPE
(void) setlocale(LC_CTYPE, ""); /* for iscntrl */
# endif /* LC_CTYPE */
# ifdef NLS_CATALOGS
# ifdef LC_MESSAGES
(void) setlocale(LC_MESSAGES, "");
# endif /* LC_MESSAGES */
nlsclose();
nlsinit();
# endif /* NLS_CATALOGS */
# ifdef SETLOCALEBUG
dont_free = 0;
# endif /* SETLOCALEBUG */
# ifdef STRCOLLBUG
fix_strcoll_bug();
# endif /* STRCOLLBUG */
tw_cmd_free();/* since the collation sequence has changed */
for (k = 0200; k <= 0377 && !Isprint(CTL_ESC(k)); k++)
continue;
AsciiOnly = MB_CUR_MAX == 1 && k > 0377;
#else /* !NLS */
AsciiOnly = getenv("LANG") == NULL &&
getenv("LC_CTYPE") == NULL;
#endif /* NLS */
NLSMapsAreInited = 0;
ed_Init();
if (MapsAreInited && !NLSMapsAreInited)
ed_InitNLSMaps();
}
#ifdef WINNT_NATIVE
else if (eq(name,(STRtcshlang))) {
nls_dll_unload();
nlsinit();
}
#endif /* WINNT_NATIVE */
#ifdef COLOR_LS_F
else if (eq(name, STRLS_COLORS))
parseLS_COLORS(n);
else if (eq(name, STRLSCOLORS))
parseLSCOLORS(n);
#endif /* COLOR_LS_F */
#ifdef NLS_CATALOGS
else if (eq(name, STRNLSPATH)) {
nlsclose();
nlsinit();
}
#endif
/*
* start again cause the environment changes
*/
break;
}
cleanup_until(name);
}
void
tsetenv(const Char *name, const Char *val)
{
#ifdef SETENV_IN_LIB
/*
* XXX: This does not work right, since tcsh cannot track changes to
* the environment this way. (the builtin setenv without arguments does
* not print the right stuff neither does unsetenv). This was for Mach,
* it is not needed anymore.
*/
#undef setenv
char *cname;
if (name == NULL)
return;
cname = strsave(short2str(name));
setenv(cname, short2str(val), 1);
xfree(cname);
#else /* !SETENV_IN_LIB */
Char **ep = STR_environ;
const Char *ccp;
Char *cp, *dp;
Char *blk[2];
Char **oep = ep;
#ifdef WINNT_NATIVE
nt_set_env(name,val);
#endif /* WINNT_NATIVE */
for (; *ep; ep++) {
#ifdef WINNT_NATIVE
for (ccp = name, dp = *ep; *ccp && Tolower(*ccp & TRIM) == Tolower(*dp);
ccp++, dp++)
#else
for (ccp = name, dp = *ep; *ccp && (*ccp & TRIM) == *dp; ccp++, dp++)
#endif /* WINNT_NATIVE */
continue;
if (*ccp != 0 || *dp != '=')
continue;
cp = Strspl(STRequal, val);
xfree(*ep);
*ep = strip(Strspl(name, cp));
xfree(cp);
blkfree((Char **) environ);
environ = short2blk(STR_environ);
return;
}
cp = Strspl(name, STRequal);
blk[0] = strip(Strspl(cp, val));
xfree(cp);
blk[1] = 0;
STR_environ = blkspl(STR_environ, blk);
blkfree((Char **) environ);
environ = short2blk(STR_environ);
xfree(oep);
#endif /* SETENV_IN_LIB */
}
void
Unsetenv(Char *name)
{
Char **ep = STR_environ;
Char *cp, *dp;
Char **oep = ep;
#ifdef WINNT_NATIVE
nt_set_env(name,NULL);
#endif /*WINNT_NATIVE */
for (; *ep; ep++) {
for (cp = name, dp = *ep; *cp && *cp == *dp; cp++, dp++)
continue;
if (*cp != 0 || *dp != '=')
continue;
cp = *ep;
*ep = 0;
STR_environ = blkspl(STR_environ, ep + 1);
blkfree((Char **) environ);
environ = short2blk(STR_environ);
*ep = cp;
xfree(cp);
xfree(oep);
return;
}
}
/*ARGSUSED*/
void
doumask(Char **v, struct command *c)
{
Char *cp = v[1];
int i;
USE(c);
if (cp == 0) {
i = (int)umask(0);
(void) umask(i);
xprintf("%o\n", i);
return;
}
i = 0;
while (Isdigit(*cp) && *cp != '8' && *cp != '9')
i = i * 8 + *cp++ - '0';
if (*cp || i < 0 || i > 0777)
stderror(ERR_NAME | ERR_MASK);
(void) umask(i);
}
#ifndef HAVENOLIMIT
# ifndef BSDLIMIT
typedef long RLIM_TYPE;
# ifdef _OSD_POSIX /* BS2000 */
# include <ulimit.h>
# endif
# ifndef RLIM_INFINITY
# if !defined(_MINIX) && !defined(__clipper__) && !defined(_CRAY)
extern RLIM_TYPE ulimit();
# endif /* ! _MINIX && !__clipper__ */
# define RLIM_INFINITY 0x003fffff
# define RLIMIT_FSIZE 1
# endif /* RLIM_INFINITY */
# ifdef aiws
# define toset(a) (((a) == 3) ? 1004 : (a) + 1)
# define RLIMIT_DATA 3
# define RLIMIT_STACK 1005
# else /* aiws */
# define toset(a) ((a) + 1)
# endif /* aiws */
# else /* BSDLIMIT */
# if (defined(BSD4_4) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) || (HPUXVERSION >= 1100)) && !defined(__386BSD__)
typedef rlim_t RLIM_TYPE;
# else
# if defined(SOLARIS2) || (defined(sgi) && SYSVREL > 3)
typedef rlim_t RLIM_TYPE;
# else
# if defined(_SX)
typedef long long RLIM_TYPE;
# else /* !_SX */
typedef unsigned long RLIM_TYPE;
# endif /* _SX */
# endif /* SOLARIS2 || (sgi && SYSVREL > 3) */
# endif /* BSD4_4 && !__386BSD__ */
# endif /* BSDLIMIT */
# if (HPUXVERSION > 700) && (HPUXVERSION < 1100) && defined(BSDLIMIT)
/* Yes hpux8.0 has limits but <sys/resource.h> does not make them public */
/* Yes, we could have defined _KERNEL, and -I/etc/conf/h, but is that better? */
# ifndef RLIMIT_CPU
# define RLIMIT_CPU 0
# define RLIMIT_FSIZE 1
# define RLIMIT_DATA 2
# define RLIMIT_STACK 3
# define RLIMIT_CORE 4
# define RLIMIT_RSS 5
# define RLIMIT_NOFILE 6
# endif /* RLIMIT_CPU */
# ifndef RLIM_INFINITY
# define RLIM_INFINITY 0x7fffffff
# endif /* RLIM_INFINITY */
/*
* old versions of HP/UX counted limits in 512 bytes
*/
# ifndef SIGRTMIN
# define FILESIZE512
# endif /* SIGRTMIN */
# endif /* (HPUXVERSION > 700) && (HPUXVERSION < 1100) && BSDLIMIT */
# if SYSVREL > 3 && defined(BSDLIMIT) && !defined(_SX)
/* In order to use rusage, we included "/usr/ucbinclude/sys/resource.h" in */
/* sh.h. However, some SVR4 limits are defined in <sys/resource.h>. Rather */
/* than include both and get warnings, we define the extra SVR4 limits here. */
/* XXX: I don't understand if RLIMIT_AS is defined, why don't we define */
/* RLIMIT_VMEM based on it? */
# ifndef RLIMIT_VMEM
# define RLIMIT_VMEM 6
# endif
# ifndef RLIMIT_AS
# define RLIMIT_AS RLIMIT_VMEM
# endif
# endif /* SYSVREL > 3 && BSDLIMIT */
# if (defined(__linux__) || defined(__GNU__) || defined(__GLIBC__))
# if defined(RLIMIT_AS) && !defined(RLIMIT_VMEM)
# define RLIMIT_VMEM RLIMIT_AS
# endif
/*
* Oh well, <asm-generic/resource.h> has it, but <bits/resource.h> does not
* Linux headers: When the left hand does not know what the right hand does.
*/
# if defined(RLIMIT_RTPRIO) && !defined(RLIMIT_RTTIME)
# define RLIMIT_RTTIME (RLIMIT_RTPRIO + 1)
# endif
# endif
struct limits limits[] =
{
# ifdef RLIMIT_CPU
{ RLIMIT_CPU, "cputime", 1, "seconds" },
# endif /* RLIMIT_CPU */
# ifdef RLIMIT_FSIZE
# ifndef aiws
{ RLIMIT_FSIZE, "filesize", 1024, "kbytes" },
# else
{ RLIMIT_FSIZE, "filesize", 512, "blocks" },
# endif /* aiws */
# endif /* RLIMIT_FSIZE */
# ifdef RLIMIT_DATA
{ RLIMIT_DATA, "datasize", 1024, "kbytes" },
# endif /* RLIMIT_DATA */
# ifdef RLIMIT_STACK
# ifndef aiws
{ RLIMIT_STACK, "stacksize", 1024, "kbytes" },
# else
{ RLIMIT_STACK, "stacksize", 1024 * 1024, "kbytes"},
# endif /* aiws */
# endif /* RLIMIT_STACK */
# ifdef RLIMIT_CORE
{ RLIMIT_CORE, "coredumpsize", 1024, "kbytes" },
# endif /* RLIMIT_CORE */
# ifdef RLIMIT_RSS
{ RLIMIT_RSS, "memoryuse", 1024, "kbytes" },
# endif /* RLIMIT_RSS */
# ifdef RLIMIT_UMEM
{ RLIMIT_UMEM, "memoryuse", 1024, "kbytes" },
# endif /* RLIMIT_UMEM */
# ifdef RLIMIT_VMEM
{ RLIMIT_VMEM, "vmemoryuse", 1024, "kbytes" },
# endif /* RLIMIT_VMEM */
# if defined(RLIMIT_HEAP) /* found on BS2000/OSD systems */
{ RLIMIT_HEAP, "heapsize", 1024, "kbytes" },
# endif /* RLIMIT_HEAP */
# ifdef RLIMIT_NOFILE
{ RLIMIT_NOFILE, "descriptors", 1, "" },
# endif /* RLIMIT_NOFILE */
# ifdef RLIMIT_NPTS
{ RLIMIT_NPTS, "pseudoterminals", 1, "" },
# endif /* RLIMIT_NPTS */
# ifdef RLIMIT_KQUEUES
{ RLIMIT_KQUEUES, "kqueues", 1, "" },
# endif /* RLIMIT_KQUEUES */
# ifdef RLIMIT_CONCUR
{ RLIMIT_CONCUR, "concurrency", 1, "thread(s)" },
# endif /* RLIMIT_CONCUR */
# ifdef RLIMIT_MEMLOCK
{ RLIMIT_MEMLOCK, "memorylocked", 1024, "kbytes" },
# endif /* RLIMIT_MEMLOCK */
# ifdef RLIMIT_NPROC
{ RLIMIT_NPROC, "maxproc", 1, "" },
# endif /* RLIMIT_NPROC */
# ifdef RLIMIT_NTHR
{ RLIMIT_NTHR, "maxthread", 1, "" },
# endif /* RLIMIT_NTHR */
# if defined(RLIMIT_OFILE) && !defined(RLIMIT_NOFILE)
{ RLIMIT_OFILE, "openfiles", 1, "" },
# endif /* RLIMIT_OFILE && !defined(RLIMIT_NOFILE) */
# ifdef RLIMIT_SBSIZE
{ RLIMIT_SBSIZE, "sbsize", 1, "" },
# endif /* RLIMIT_SBSIZE */
# ifdef RLIMIT_SWAP
{ RLIMIT_SWAP, "swapsize", 1024, "kbytes" },
# endif /* RLIMIT_SWAP */
# ifdef RLIMIT_LOCKS
{ RLIMIT_LOCKS, "maxlocks", 1, "" },
# endif /* RLIMIT_LOCKS */
# ifdef RLIMIT_POSIXLOCKS
{ RLIMIT_POSIXLOCKS,"posixlocks", 1, "" },
# endif /* RLIMIT_POSIXLOCKS */
# ifdef RLIMIT_SIGPENDING
{ RLIMIT_SIGPENDING,"maxsignal", 1, "" },
# endif /* RLIMIT_SIGPENDING */
# ifdef RLIMIT_MSGQUEUE
{ RLIMIT_MSGQUEUE, "maxmessage", 1, "" },
# endif /* RLIMIT_MSGQUEUE */
# ifdef RLIMIT_NICE
{ RLIMIT_NICE, "maxnice", 1, "" },
# endif /* RLIMIT_NICE */
# ifdef RLIMIT_RTPRIO
{ RLIMIT_RTPRIO, "maxrtprio", 1, "" },
# endif /* RLIMIT_RTPRIO */
# ifdef RLIMIT_RTTIME
{ RLIMIT_RTTIME, "maxrttime", 1, "usec" },
# endif /* RLIMIT_RTTIME */
{ -1, NULL, 0, NULL }
};
static struct limits *findlim (Char *);
static RLIM_TYPE getval (struct limits *, Char **);
static int strtail (Char *, const char *);
static void limtail (Char *, const char *);
static void limtail2 (Char *, const char *, const char *);
static void plim (struct limits *, int);
static int setlim (struct limits *, int, RLIM_TYPE);
#ifdef convex
static RLIM_TYPE
restrict_limit(double value)
{
/*
* is f too large to cope with? return the maximum or minimum int
*/
if (value > (double) INT_MAX)
return (RLIM_TYPE) INT_MAX;
else if (value < (double) INT_MIN)
return (RLIM_TYPE) INT_MIN;
else
return (RLIM_TYPE) value;
}
#else /* !convex */
# define restrict_limit(x) ((RLIM_TYPE) (x))
#endif /* convex */
static struct limits *
findlim(Char *cp)
{
struct limits *lp, *res;
res = NULL;
for (lp = limits; lp->limconst >= 0; lp++)
if (prefix(cp, str2short(lp->limname))) {
if (res)
stderror(ERR_NAME | ERR_AMBIG);
res = lp;
}
if (res)
return (res);
stderror(ERR_NAME | ERR_LIMIT);
/* NOTREACHED */
return (0);
}
/*ARGSUSED*/
void
dolimit(Char **v, struct command *c)
{
struct limits *lp;
RLIM_TYPE limit;
int hard = 0;
USE(c);
v++;
if (*v && eq(*v, STRmh)) {
hard = 1;
v++;
}
if (*v == 0) {
for (lp = limits; lp->limconst >= 0; lp++)
plim(lp, hard);
return;
}
lp = findlim(v[0]);
if (v[1] == 0) {
plim(lp, hard);
return;
}
limit = getval(lp, v + 1);
if (setlim(lp, hard, limit) < 0)
stderror(ERR_SILENT);
}
static RLIM_TYPE
getval(struct limits *lp, Char **v)
{
float f;
Char *cp = *v++;
f = atof(short2str(cp));
# ifdef convex
/*
* is f too large to cope with. limit f to minint, maxint - X-6768 by
* strike
*/
if ((f < (double) INT_MIN) || (f > (double) INT_MAX)) {
stderror(ERR_NAME | ERR_TOOLARGE);
}
# endif /* convex */
while (Isdigit(*cp) || *cp == '.' || *cp == 'e' || *cp == 'E')
cp++;
if (*cp == 0) {
if (*v == 0)
return restrict_limit((f * lp->limdiv) + 0.5);
cp = *v;
}
switch (*cp) {
# ifdef RLIMIT_CPU
case ':':
if (lp->limconst != RLIMIT_CPU)
goto badscal;
return f == 0.0 ? (RLIM_TYPE) 0 : restrict_limit((f * 60.0 + atof(short2str(cp + 1))));
case 'h':
if (lp->limconst != RLIMIT_CPU)
goto badscal;
limtail(cp, "hours");
f *= 3600.0;
break;
# endif /* RLIMIT_CPU */
case 'm':
# ifdef RLIMIT_CPU
if (lp->limconst == RLIMIT_CPU) {
limtail(cp, "minutes");
f *= 60.0;
break;
}
# endif /* RLIMIT_CPU */
limtail2(cp, "megabytes", "mbytes");
f *= 1024.0 * 1024.0;
break;
# ifdef RLIMIT_CPU
case 's':
if (lp->limconst != RLIMIT_CPU)
goto badscal;
limtail(cp, "seconds");
break;
# endif /* RLIMIT_CPU */
case 'G':
*cp = 'g';
/*FALLTHROUGH*/
case 'g':
# ifdef RLIMIT_CPU
if (lp->limconst == RLIMIT_CPU)
goto badscal;
# endif /* RLIMIT_CPU */
limtail2(cp, "gigabytes", "gbytes");
f *= 1024.0 * 1024.0 * 1024.0;
break;
case 'M':
# ifdef RLIMIT_CPU
if (lp->limconst == RLIMIT_CPU)
goto badscal;
# endif /* RLIMIT_CPU */
*cp = 'm';
limtail2(cp, "megabytes", "mbytes");
f *= 1024.0 * 1024.0;
break;
case 'k':
# ifdef RLIMIT_CPU
if (lp->limconst == RLIMIT_CPU)
goto badscal;
# endif /* RLIMIT_CPU */
limtail2(cp, "kilobytes", "kbytes");
f *= 1024.0;
break;
case 'b':
# ifdef RLIMIT_CPU
if (lp->limconst == RLIMIT_CPU)
goto badscal;
# endif /* RLIMIT_CPU */
limtail(cp, "blocks");
f *= 512.0;
break;
case 'u':
limtail(cp, "unlimited");
return ((RLIM_TYPE) RLIM_INFINITY);
default:
# ifdef RLIMIT_CPU
badscal:
# endif /* RLIMIT_CPU */
stderror(ERR_NAME | ERR_SCALEF);
}
# ifdef convex
return f == 0.0 ? (RLIM_TYPE) 0 : restrict_limit((f + 0.5));
# else
f += 0.5;
if (f > (float) ((RLIM_TYPE) RLIM_INFINITY))
return ((RLIM_TYPE) RLIM_INFINITY);
else
return ((RLIM_TYPE) f);
# endif /* convex */
}
static int
strtail(Char *cp, const char *str)
{
while (*cp && *cp == (Char)*str)
cp++, str++;
return (*cp != '\0');
}
static void
limtail(Char *cp, const char *str)
{
if (strtail(cp, str))
stderror(ERR_BADSCALE, str);
}
static void
limtail2(Char *cp, const char *str1, const char *str2)
{
if (strtail(cp, str1) && strtail(cp, str2))
stderror(ERR_BADSCALE, str1);
}
/*ARGSUSED*/
static void
plim(struct limits *lp, int hard)
{
# ifdef BSDLIMIT
struct rlimit rlim;
# endif /* BSDLIMIT */
RLIM_TYPE limit;
int xdiv = lp->limdiv;
xprintf("%-13.13s", lp->limname);
# ifndef BSDLIMIT
limit = ulimit(lp->limconst, 0);
# ifdef aiws
if (lp->limconst == RLIMIT_DATA)
limit -= 0x20000000;
# endif /* aiws */
# else /* BSDLIMIT */
(void) getrlimit(lp->limconst, &rlim);
limit = hard ? rlim.rlim_max : rlim.rlim_cur;
# endif /* BSDLIMIT */
# if !defined(BSDLIMIT) || defined(FILESIZE512)
/*
* Christos: filesize comes in 512 blocks. we divide by 2 to get 1024
* blocks. Note we cannot pre-multiply cause we might overflow (A/UX)
*/
if (lp->limconst == RLIMIT_FSIZE) {
if (limit >= (RLIM_INFINITY / 512))
limit = RLIM_INFINITY;
else
xdiv = (xdiv == 1024 ? 2 : 1);
}
# endif /* !BSDLIMIT || FILESIZE512 */
if (limit == RLIM_INFINITY)
xprintf("unlimited");
else
# if defined(RLIMIT_CPU) && defined(_OSD_POSIX)
if (lp->limconst == RLIMIT_CPU &&
(unsigned long)limit >= 0x7ffffffdUL)
xprintf("unlimited");
else
# endif
# ifdef RLIMIT_CPU
if (lp->limconst == RLIMIT_CPU)
psecs(limit);
else
# endif /* RLIMIT_CPU */
xprintf("%ld %s", (long) (limit / xdiv), lp->limscale);
xputchar('\n');
}
/*ARGSUSED*/
void
dounlimit(Char **v, struct command *c)
{
struct limits *lp;
int lerr = 0;
int hard = 0;
int force = 0;
USE(c);
while (*++v && **v == '-') {
Char *vp = *v;
while (*++vp)
switch (*vp) {
case 'f':
force = 1;
break;
case 'h':
hard = 1;
break;
default:
stderror(ERR_ULIMUS);
break;
}
}
if (*v == 0) {
for (lp = limits; lp->limconst >= 0; lp++)
if (setlim(lp, hard, (RLIM_TYPE) RLIM_INFINITY) < 0)
lerr++;
if (!force && lerr)
stderror(ERR_SILENT);
return;
}
while (*v) {
lp = findlim(*v++);
if (setlim(lp, hard, (RLIM_TYPE) RLIM_INFINITY) < 0 && !force)
stderror(ERR_SILENT);
}
}
static int
setlim(struct limits *lp, int hard, RLIM_TYPE limit)
{
# ifdef BSDLIMIT
struct rlimit rlim;
(void) getrlimit(lp->limconst, &rlim);
# ifdef FILESIZE512
/* Even though hpux has setrlimit(), it expects fsize in 512 byte blocks */
if (limit != RLIM_INFINITY && lp->limconst == RLIMIT_FSIZE)
limit /= 512;
# endif /* FILESIZE512 */
if (hard)
rlim.rlim_max = limit;
else if (limit == RLIM_INFINITY && euid != 0)
rlim.rlim_cur = rlim.rlim_max;
else
rlim.rlim_cur = limit;
if (rlim.rlim_cur > rlim.rlim_max)
rlim.rlim_max = rlim.rlim_cur;
if (setrlimit(lp->limconst, &rlim) < 0) {
# else /* BSDLIMIT */
if (limit != RLIM_INFINITY && lp->limconst == RLIMIT_FSIZE)
limit /= 512;
# ifdef aiws
if (lp->limconst == RLIMIT_DATA)
limit += 0x20000000;
# endif /* aiws */
if (ulimit(toset(lp->limconst), limit) < 0) {
# endif /* BSDLIMIT */
int err;
char *op, *type;
err = errno;
op = strsave(limit == RLIM_INFINITY ? CGETS(15, 2, "remove") :
CGETS(15, 3, "set"));
cleanup_push(op, xfree);
type = strsave(hard ? CGETS(15, 4, " hard") : "");
cleanup_push(type, xfree);
xprintf(CGETS(15, 1, "%s: %s: Can't %s%s limit (%s)\n"), bname,
lp->limname, op, type, strerror(err));
cleanup_until(op);
return (-1);
}
return (0);
}
#endif /* !HAVENOLIMIT */
/*ARGSUSED*/
void
dosuspend(Char **v, struct command *c)
{
#ifdef BSDJOBS
struct sigaction old;
#endif /* BSDJOBS */
USE(c);
USE(v);
if (loginsh)
stderror(ERR_SUSPLOG);
untty();
#ifdef BSDJOBS
sigaction(SIGTSTP, NULL, &old);
signal(SIGTSTP, SIG_DFL);
(void) kill(0, SIGTSTP);
/* the shell stops here */
sigaction(SIGTSTP, &old, NULL);
#else /* !BSDJOBS */
stderror(ERR_JOBCONTROL);
#endif /* BSDJOBS */
#ifdef BSDJOBS
if (tpgrp != -1) {
if (grabpgrp(FSHTTY, opgrp) == -1)
stderror(ERR_SYSTEM, "tcgetpgrp", strerror(errno));
(void) setpgid(0, shpgrp);
(void) tcsetpgrp(FSHTTY, shpgrp);
}
#endif /* BSDJOBS */
(void) setdisc(FSHTTY);
}
/* This is the dreaded EVAL built-in.
* If you don't fiddle with file descriptors, and reset didfds,
* this command will either ignore redirection inside or outside
* its arguments, e.g. eval "date >x" vs. eval "date" >x
* The stuff here seems to work, but I did it by trial and error rather
* than really knowing what was going on. If tpgrp is zero, we are
* probably a background eval, e.g. "eval date &", and we want to
* make sure that any processes we start stay in our pgrp.
* This is also the case for "time eval date" -- stay in same pgrp.
* Otherwise, under stty tostop, processes will stop in the wrong
* pgrp, with no way for the shell to get them going again. -IAN!
*/
struct doeval_state
{
Char **evalvec, *evalp;
int didfds;
#ifndef CLOSE_ON_EXEC
int didcch;
#endif
int saveIN, saveOUT, saveDIAG;
int SHIN, SHOUT, SHDIAG;
};
static void
doeval_cleanup(void *xstate)
{
struct doeval_state *state;
state = xstate;
evalvec = state->evalvec;
evalp = state->evalp;
doneinp = 0;
#ifndef CLOSE_ON_EXEC
didcch = state->didcch;
#endif /* CLOSE_ON_EXEC */
didfds = state->didfds;
if (state->saveIN != SHIN)
xclose(SHIN);
if (state->saveOUT != SHOUT)
xclose(SHOUT);
if (state->saveDIAG != SHDIAG)
xclose(SHDIAG);
close_on_exec(SHIN = dmove(state->saveIN, state->SHIN), 1);
close_on_exec(SHOUT = dmove(state->saveOUT, state->SHOUT), 1);
close_on_exec(SHDIAG = dmove(state->saveDIAG, state->SHDIAG), 1);
if (didfds) {
close_on_exec(dcopy(SHIN, 0), 1);
close_on_exec(dcopy(SHOUT, 1), 1);
close_on_exec(dcopy(SHDIAG, 2), 1);
}
}
static Char **Ggv;
/*ARGSUSED*/
void
doeval(Char **v, struct command *c)
{
struct doeval_state state;
int gflag, my_reenter;
Char **gv;
jmp_buf_t osetexit;
USE(c);
v++;
if (*v == 0)
return;
gflag = tglob(v);
if (gflag) {
gv = v = globall(v, gflag);
if (v == 0)
stderror(ERR_NOMATCH);
cleanup_push(gv, blk_cleanup);
v = copyblk(v);
}
else {
gv = NULL;
v = copyblk(v);
trim(v);
}
Ggv = gv;
state.evalvec = evalvec;
state.evalp = evalp;
state.didfds = didfds;
#ifndef CLOSE_ON_EXEC
state.didcch = didcch;
#endif /* CLOSE_ON_EXEC */
state.SHIN = SHIN;
state.SHOUT = SHOUT;
state.SHDIAG = SHDIAG;
(void)close_on_exec(state.saveIN = dcopy(SHIN, -1), 1);
(void)close_on_exec(state.saveOUT = dcopy(SHOUT, -1), 1);
(void)close_on_exec(state.saveDIAG = dcopy(SHDIAG, -1), 1);
cleanup_push(&state, doeval_cleanup);
getexit(osetexit);
/* PWP: setjmp/longjmp bugfix for optimizing compilers */
#ifdef cray
my_reenter = 1; /* assume non-zero return val */
if (setexit() == 0) {
my_reenter = 0; /* Oh well, we were wrong */
#else /* !cray */
if ((my_reenter = setexit()) == 0) {
#endif /* cray */
evalvec = v;
evalp = 0;
(void)close_on_exec(SHIN = dcopy(0, -1), 1);
(void)close_on_exec(SHOUT = dcopy(1, -1), 1);
(void)close_on_exec(SHDIAG = dcopy(2, -1), 1);
#ifndef CLOSE_ON_EXEC
didcch = 0;
#endif /* CLOSE_ON_EXEC */
didfds = 0;
gv = Ggv;
process(0);
Ggv = gv;
}
if (my_reenter == 0) {
cleanup_until(&state);
if (Ggv)
cleanup_until(Ggv);
}
resexit(osetexit);
if (my_reenter)
stderror(ERR_SILENT);
}
/*************************************************************************/
/* print list of builtin commands */
static void
lbuffed_cleanup (void *dummy)
{
USE(dummy);
lbuffed = 1;
}
/*ARGSUSED*/
void
dobuiltins(Char **v, struct command *c)
{
/* would use print_by_column() in tw.parse.c but that assumes
* we have an array of Char * to pass.. (sg)
*/
const struct biltins *b;
int row, col, columns, rows;
unsigned int w, maxwidth;
USE(c);
USE(v);
lbuffed = 0; /* turn off line buffering */
cleanup_push(&lbuffed, lbuffed_cleanup);
/* find widest string */
for (maxwidth = 0, b = bfunc; b < &bfunc[nbfunc]; ++b)
maxwidth = max(maxwidth, strlen(b->bname));
++maxwidth; /* for space */
columns = (TermH + 1) / maxwidth; /* PWP: terminal size change */
if (!columns)
columns = 1;
rows = (nbfunc + (columns - 1)) / columns;
for (b = bfunc, row = 0; row < rows; row++) {
for (col = 0; col < columns; col++) {
if (b < &bfunc[nbfunc]) {
w = strlen(b->bname);
xprintf("%s", b->bname);
if (col < (columns - 1)) /* Not last column? */
for (; w < maxwidth; w++)
xputchar(' ');
++b;
}
}
if (row < (rows - 1)) {
if (Tty_raw_mode)
xputchar('\r');
xputchar('\n');
}
}
#ifdef WINNT_NATIVE
nt_print_builtins(maxwidth);
#else
if (Tty_raw_mode)
xputchar('\r');
xputchar('\n');
#endif /* WINNT_NATIVE */
cleanup_until(&lbuffed); /* turn back on line buffering */
flush();
}
#ifdef NLS_CATALOGS
char *
xcatgets(nl_catd ctd, int set_id, int msg_id, const char *s)
{
char *res;
errno = 0;
while ((res = catgets(ctd, set_id, msg_id, s)) == s && errno == EINTR) {
handle_pending_signals();
errno = 0;
}
return res;
}
# if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
char *
iconv_catgets(nl_catd ctd, int set_id, int msg_id, const char *s)
{
static char *buf = NULL;
static size_t buf_size = 0;
char *orig, *dest, *p;
ICONV_CONST char *src;
size_t src_size, dest_size;
orig = xcatgets(ctd, set_id, msg_id, s);
if (catgets_iconv == (iconv_t)-1 || orig == s)
return orig;
src = orig;
src_size = strlen(src) + 1;
if (buf == NULL && (buf = xmalloc(buf_size = src_size + 32)) == NULL)
return orig;
dest = buf;
while (src_size != 0) {
dest_size = buf + buf_size - dest;
if (iconv(catgets_iconv, &src, &src_size, &dest, &dest_size)
== (size_t)-1) {
switch (errno) {
case E2BIG:
if ((p = xrealloc(buf, buf_size * 2)) == NULL)
return orig;
buf_size *= 2;
dest = p + (dest - buf);
buf = p;
break;
case EILSEQ: case EINVAL: default:
return orig;
}
}
}
return buf;
}
# endif /* HAVE_ICONV && HAVE_NL_LANGINFO */
#endif /* NLS_CATALOGS */
void
nlsinit(void)
{
#ifdef NLS_CATALOGS
static const char default_catalog[] = "tcsh";
char *catalog = (char *)(intptr_t)default_catalog;
if (adrof(STRcatalog) != NULL)
catalog = xasprintf("tcsh.%s", short2str(varval(STRcatalog)));
#ifdef NL_CAT_LOCALE /* POSIX-compliant. */
/*
* Check if LC_MESSAGES is set in the environment and use it, if so.
* If not, fall back to the setting of LANG.
*/
catd = catopen(catalog, tgetenv(STRLC_MESSAGES) ? NL_CAT_LOCALE : 0);
#else /* pre-POSIX */
# ifndef MCLoadBySet
# define MCLoadBySet 0
# endif
catd = catopen(catalog, MCLoadBySet);
#endif
if (catalog != default_catalog)
xfree(catalog);
#if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
/* xcatgets (), not CGETS, the charset name should be in ASCII anyway. */
catgets_iconv = iconv_open (nl_langinfo (CODESET),
xcatgets(catd, 255, 1, "UTF-8"));
#endif /* HAVE_ICONV && HAVE_NL_LANGINFO */
#endif /* NLS_CATALOGS */
#ifdef WINNT_NATIVE
nls_dll_init();
#endif /* WINNT_NATIVE */
errinit(); /* init the errorlist in correct locale */
mesginit(); /* init the messages for signals */
dateinit(); /* init the messages for dates */
editinit(); /* init the editor messages */
terminit(); /* init the termcap messages */
}
void
nlsclose(void)
{
#ifdef NLS_CATALOGS
#if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
if (catgets_iconv != (iconv_t)-1) {
iconv_close(catgets_iconv);
catgets_iconv = (iconv_t)-1;
}
#endif /* HAVE_ICONV && HAVE_NL_LANGINFO */
if (catd != (nl_catd)-1) {
/*
* catclose can call other functions which can call longjmp
* making us re-enter this code. Prevent infinite recursion
* by resetting catd. Problem reported and solved by:
* Gerhard Niklasch
*/
nl_catd oldcatd = catd;
catd = (nl_catd)-1;
while (catclose(oldcatd) == -1 && errno == EINTR)
handle_pending_signals();
}
#endif /* NLS_CATALOGS */
}
int
getYN(const char *prompt)
{
int doit;
char c;
xprintf("%s", prompt);
flush();
(void) force_read(SHIN, &c, sizeof(c));
/*
* Perhaps we should use the yesexpr from the
* actual locale
*/
doit = (strchr(CGETS(22, 14, "Yy"), c) != NULL);
while (c != '\n' && force_read(SHIN, &c, sizeof(c)) == sizeof(c))
continue;
return doit;
}
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