/*
* dnewcwd - make a new directory in the loop the current one
*/
static void
dnewcwd(struct directory *dp, int dflag)
{
int print;
if (adrof(STRdunique)) {
struct directory *dn;
for (dn = dhead.di_prev; dn != &dhead; dn = dn->di_prev)
if (dn != dp && Strcmp(dn->di_name, dp->di_name) == 0) {
dn->di_next->di_prev = dn->di_prev;
dn->di_prev->di_next = dn->di_next;
dfree(dn);
break;
}
}
dcwd = dp;
dset(dcwd->di_name);
dgetstack();
print = printd; /* if printd is set, print dirstack... */
if (adrof(STRpushdsilent)) /* but pushdsilent overrides printd... */
print = 0;
if (dflag & DIR_PRINT) /* but DIR_PRINT overrides pushdsilent... */
print = 1;
if (bequiet) /* and bequiet overrides everything */
print = 0;
if (print)
printdirs(dflag);
cwd_cmd(); /* PWP: run the defined cwd command */
}
/*
* Fill up caching arrays for path and cdpath
*/
void
dohash(char cachearray[])
{
struct stat stb;
DIR *dirp;
struct dirent *dp;
int cnt;
int i = 0;
struct varent *v;
tchar **pv;
int hashval;
tchar curdir_[MAXNAMLEN+1];
#ifdef TRACE
tprintf("TRACE- dohash()\n");
#endif
/* Caching $path */
if (cachearray == xhash) {
havhash = 1;
v = adrof(S_path /* "path" */);
} else { /* Caching $cdpath */
havhash2 = 1;
v = adrof(S_cdpath /* "cdpath" */);
}
for (cnt = 0; cnt < (HSHSIZ / 8); cnt++)
cachearray[cnt] = 0;
if (v == 0)
{
return;
}
for (pv = v->vec; *pv; pv++, i++) {
if (pv[0][0] != '/')
continue;
dirp = opendir_(*pv);
if (dirp == NULL)
continue;
if (fstat(dirp->dd_fd, &stb) < 0 || !isdir(stb)) {
unsetfd(dirp->dd_fd);
closedir_(dirp);
continue;
}
while ((dp = readdir(dirp)) != NULL) {
if (dp->d_ino == 0)
continue;
if (dp->d_name[0] == '.' &&
(dp->d_name[1] == '\0' ||
dp->d_name[1] == '.' && dp->d_name[2] == '\0'))
continue;
hashval = hash(hashname(strtots(curdir_, dp->d_name)), i);
bis(cachearray, hashval);
}
unsetfd(dirp->dd_fd);
closedir_(dirp);
}
}
void
SoundBeep(void)
{ /* produce a sound */
beep_cmd ();
if (adrof(STRnobeep))
return;
if (adrof(STRvisiblebell))
NT_VisibleBell(); /* visible bell */
else
MessageBeep(MB_ICONQUESTION);
}
void
/*ARGSUSED*/
unset(Char **v, struct command *t)
{
unset1(v, &shvhed);
if (adrof(STRfilec) == 0)
filec = 0;
if (adrof(STRhistchars) == 0) {
HIST = '!';
HISTSUB = '^';
}
if (adrof(STRwordchars) == 0)
word_chars = STR_WORD_CHARS;
}
/* set_color_context():
*/
void
set_color_context()
{
struct varent *vp = adrof(STRcolor);
if (!vp) {
color_context_ls = FALSE;
color_context_lsmF = FALSE;
}
else if (!vp->vec[0] || vp->vec[0][0] == '\0') {
color_context_ls = TRUE;
color_context_lsmF = TRUE;
}
else {
size_t i;
color_context_ls = FALSE;
color_context_lsmF = FALSE;
for (i = 0; vp->vec[i]; i++)
if (Strcmp(vp->vec[i], STRls) == 0)
color_context_ls = TRUE;
else if (Strcmp(vp->vec[i], STRlsmF) == 0)
color_context_lsmF = TRUE;
}
}
void
dsetstack(void)
{
Char **cp;
struct varent *vp;
struct directory *dn, *dp;
if ((vp = adrof(STRdirstack)) == NULL || vp->vec == NULL)
return;
/* Free the whole stack */
while ((dn = dhead.di_prev) != &dhead) {
dn->di_next->di_prev = dn->di_prev;
dn->di_prev->di_next = dn->di_next;
if (dn != dcwd)
dfree(dn);
}
/* thread the current working directory */
dhead.di_prev = dhead.di_next = dcwd;
dcwd->di_next = dcwd->di_prev = &dhead;
/* put back the stack */
for (cp = vp->vec; cp && *cp && **cp; cp++) {
dp = xcalloc(sizeof(struct directory), 1);
dp->di_name = Strsave(*cp);
dp->di_count = 0;
dp->di_prev = dcwd;
dp->di_next = dcwd->di_next;
dcwd->di_next = dp;
dp->di_next->di_prev = dp;
}
dgetstack(); /* Make $dirstack reflect the current state */
}
static Char *
globtilde(Char *s)
{
Char *name, *u, *home, *res;
u = s;
for (s++; *s && *s != '/' && *s != ':'; s++)
continue;
name = Strnsave(u + 1, s - (u + 1));
cleanup_push(name, xfree);
home = gethdir(name);
if (home == NULL) {
if (adrof(STRnonomatch)) {
cleanup_until(name);
return u;
}
if (*name)
stderror(ERR_UNKUSER, short2str(name));
else
stderror(ERR_NOHOME);
}
cleanup_until(name);
if (home[0] == '/' && home[1] == '\0' && s[0] == '/')
res = Strsave(s);
else
res = Strspl(home, s);
xfree(home);
xfree(u);
return res;
}
/*
* dnewcwd - make a new directory in the loop the current one
*/
static void
dnewcwd(struct directory *dp)
{
dcwd = dp;
dset(dcwd->di_name);
if (printd && !(adrof(STRpushdsilent)))
printdirs();
}
void
goodbye(void)
{
rechist();
if (loginsh) {
(void) signal(SIGQUIT, SIG_IGN);
(void) signal(SIGINT, SIG_IGN);
(void) signal(SIGTERM, SIG_IGN);
setintr = 0; /* No interrupts after "logout" */
if (!(adrof(STRlogout)))
set(STRlogout, STRnormal);
(void) srcfile(_PATH_DOTLOGOUT, 0, 0);
if (adrof(STRhome))
(void) srccat(value(STRhome), STRsldtlogout);
}
exitstat();
}
void
xechoit(Char **t)
{
if (adrof(STRecho)) {
(void) fflush(csherr);
blkpr(csherr, t);
(void) fputc('\n', csherr);
}
}
void
rechist(void)
{
Char buf[BUFSIZ], hbuf[BUFSIZ], *hfile;
int fd, ftmp, oldidfds;
struct varent *shist;
if (!fast) {
/*
* If $savehist is just set, we use the value of $history
* else we use the value in $savehist
*/
if ((shist = adrof(STRsavehist)) != NULL) {
if (shist->vec[0][0] != '\0')
(void) Strlcpy(hbuf, shist->vec[0], sizeof hbuf/sizeof(Char));
else if ((shist = adrof(STRhistory)) && shist->vec[0][0] != '\0')
(void) Strlcpy(hbuf, shist->vec[0], sizeof hbuf/sizeof(Char));
else
return;
}
else
return;
if ((hfile = value(STRhistfile)) == STRNULL) {
Strlcpy(buf, value(STRhome), sizeof buf/sizeof(Char));
hfile = buf;
(void) Strlcat(buf, STRsldthist, sizeof buf/sizeof(Char));
}
if ((fd = open(short2str(hfile), O_WRONLY | O_CREAT | O_TRUNC,
0600)) == -1)
return;
oldidfds = didfds;
didfds = 0;
ftmp = SHOUT;
SHOUT = fd;
dumphist[2] = hbuf;
dohist(dumphist, NULL);
SHOUT = ftmp;
(void) close(fd);
didfds = oldidfds;
}
}
/*
* dfollow - change to arg directory; fall back on cdpath if not valid
*/
static Char *
dfollow(Char *cp)
{
Char *dp;
struct varent *c;
char ebuf[PATH_MAX];
int serrno;
cp = globone(cp, G_ERROR);
/*
* if we are ignoring symlinks, try to fix relatives now.
*/
dp = dnormalize(cp);
if (chdir(short2str(dp)) >= 0) {
free(cp);
return dgoto(dp);
}
else {
free(dp);
if (chdir(short2str(cp)) >= 0)
return dgoto(cp);
serrno = errno;
}
if (cp[0] != '/' && !prefix(STRdotsl, cp) && !prefix(STRdotdotsl, cp)
&& (c = adrof(STRcdpath))) {
Char **cdp;
Char *p;
Char buf[PATH_MAX];
for (cdp = c->vec; *cdp; cdp++) {
for (dp = buf, p = *cdp; (*dp++ = *p++) != '\0';)
continue;
dp[-1] = '/';
for (p = cp; (*dp++ = *p++) != '\0';)
continue;
if (chdir(short2str(buf)) >= 0) {
printd = 1;
free(cp);
cp = Strsave(buf);
return dgoto(cp);
}
}
}
dp = value(cp);
if ((dp[0] == '/' || dp[0] == '.') && chdir(short2str(dp)) >= 0) {
free(cp);
cp = Strsave(dp);
printd = 1;
return dgoto(cp);
}
(void) strlcpy(ebuf, short2str(cp), sizeof ebuf);
free(cp);
stderror(ERR_SYSTEM, ebuf, strerror(serrno));
return (NULL);
}
void
autoset_kanji(void)
{
char *codeset = nl_langinfo(CODESET);
if (*codeset == '\0') {
if (adrof(STRnokanji) == NULL)
setNS(STRnokanji);
return;
}
if (strcasestr(codeset, "SHIFT_JIS") == (char*)0) {
if (adrof(STRnokanji) == NULL)
setNS(STRnokanji);
return;
}
if (adrof(STRnokanji) != NULL)
unsetv(STRnokanji);
}
static struct varent *
getvx(Char *vp, int subscr)
{
struct varent *v = adrof(vp);
if (v == 0)
udvar(vp);
if (subscr < 1 || subscr > blklen(v->vec))
stderror(ERR_NAME | ERR_RANGE);
return (v);
}
Char *
globone(Char *str, int action)
{
Char *v[2], **vl, **vo;
int gflg, noglob;
noglob = adrof(STRnoglob) != 0;
v[0] = str;
v[1] = 0;
gflg = tglob(v);
if (gflg == G_NONE)
return (strip(Strsave(str)));
if (gflg & G_CSH) {
/*
* Expand back-quote, tilde and brace
*/
vo = globexpand(v, noglob);
if (noglob || (gflg & G_GLOB) == 0) {
vl = vo;
goto result;
}
cleanup_push(vo, blk_cleanup);
}
else if (noglob || (gflg & G_GLOB) == 0)
return (strip(Strsave(str)));
else
vo = v;
vl = libglob(vo);
if (gflg & G_CSH) {
if (vl != vo)
cleanup_until(vo);
else
cleanup_ignore(vo);
}
if (vl == NULL) {
setname(short2str(str));
stderror(ERR_NAME | ERR_NOMATCH);
}
result:
if (vl && vl[0] == NULL) {
xfree(vl);
return (Strsave(STRNULL));
}
if (vl && vl[1])
return (handleone(str, vl, action));
else {
str = strip(*vl);
xfree(vl);
return (str);
}
}
void
setalarm(int lck)
{
struct varent *vp;
Char *cp;
unsigned alrm_time = 0, logout_time, lock_time;
time_t cl, nl, sched_dif;
if ((vp = adrof(STRautologout)) != NULL && vp->vec != NULL) {
if ((cp = vp->vec[0]) != 0) {
if ((logout_time = (unsigned) atoi(short2str(cp)) * 60) > 0) {
#ifdef SOLARIS2
/*
* Solaris alarm(2) uses a timer based in clock ticks
* internally so it multiplies our value with CLK_TCK...
* Of course that can overflow leading to unexpected
* results, so we clip it here. Grr. Where is that
* documented folks?
*/
if (logout_time >= 0x7fffffff / CLK_TCK)
logout_time = 0x7fffffff / CLK_TCK;
#endif /* SOLARIS2 */
alrm_time = logout_time;
alm_fun = auto_logout;
}
}
if ((cp = vp->vec[1]) != 0) {
if ((lock_time = (unsigned) atoi(short2str(cp)) * 60) > 0) {
if (lck) {
if (alrm_time == 0 || lock_time < alrm_time) {
alrm_time = lock_time;
alm_fun = auto_lock;
}
}
else /* lock_time always < alrm_time */
if (alrm_time)
alrm_time -= lock_time;
}
}
}
if ((nl = sched_next()) != -1) {
(void) time(&cl);
sched_dif = nl > cl ? nl - cl : 0;
if ((alrm_time == 0) || ((unsigned) sched_dif < alrm_time)) {
alrm_time = ((unsigned) sched_dif) + 1;
alm_fun = sched_run;
}
}
alrmcatch_disabled = 0;
(void) alarm(alrm_time); /* Autologout ON */
}
struct varent *
getvx(tchar *vp, int subscr)
{
struct varent *v = adrof(vp);
#ifdef TRACE
tprintf("TRACE- getvx()\n");
#endif
if (v == 0)
udvar(vp);
if (subscr < 1 || subscr > blklen(v->vec))
bferr("Subscript out of range");
return (v);
}
void
xechoit(Char **t)
{
if (adrof(STRecho)) {
int odidfds = didfds;
(void)fflush(csherr);
odidfds = didfds;
didfds = 0;
blkpr(csherr, t);
(void)fputc('\n', csherr);
(void)fflush(csherr);
didfds = odidfds;
}
}
void
xechoit(tchar **t)
{
#ifdef TRACE
tprintf("TRACE- xechoit()\n");
#endif
if (adrof(S_echo /* "echo" */)) {
flush();
haderr = 1;
blkpr(t), Putchar('\n');
haderr = 0;
}
}
void
prusage(FILE *fp, struct rusage *r0, struct rusage *r1, struct timespec *e,
struct timespec *b)
{
struct varent *vp;
const char *cp;
vp = adrof(STRtime);
if (vp && vp->vec[0] && vp->vec[1])
cp = short2str(vp->vec[1]);
else
cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww";
prusage1(fp, cp, r0, r1, e, b);
}
static int
iscommand(Char *name)
{
struct varent *v;
Char **pv, *sav;
int hashval, hashval1, i;
int slash;
hashval = 0;
slash = any(short2str(name), '/');
v = adrof(STRpath);
if (v == 0 || v->vec[0] == 0 || slash)
pv = justabs;
else
pv = v->vec;
sav = Strspl(STRslash, name); /* / command name for postpending */
if (havhash)
hashval = hashname(name);
i = 0;
do {
if (!slash && pv[0][0] == '/' && havhash) {
hashval1 = hash(hashval, i);
if (!bit(xhash, hashval1))
goto cont;
}
if (pv[0][0] == 0 || eq(pv[0], STRdot)) { /* don't make ./xxx */
if (executable(NULL, name, 0)) {
free(sav);
return i + 1;
}
}
else {
if (executable(*pv, sav, 0)) {
free(sav);
return i + 1;
}
}
cont:
pv++;
i++;
} while (*pv);
free(sav);
return 0;
}
void
/*ARGSUSED*/
shift(Char **v, struct command *t)
{
struct varent *argv;
Char *name;
v++;
name = *v;
if (name == 0)
name = STRargv;
else
(void) strip(name);
argv = adrof(name);
if (argv == 0)
udvar(name);
if (argv->vec[0] == 0)
stderror(ERR_NAME | ERR_NOMORE);
lshift(argv->vec, 1);
}
static void
dgetstack(void)
{
int i = 0;
Char **dblk, **dbp;
struct directory *dn;
if (adrof(STRdirstack) == NULL)
return;
for (dn = dhead.di_prev; dn != &dhead; dn = dn->di_prev, i++)
continue;
dbp = dblk = xmalloc((i + 1) * sizeof(Char *));
for (dn = dhead.di_prev; dn != &dhead; dn = dn->di_prev, dbp++)
*dbp = Strsave(dn->di_name);
*dbp = NULL;
cleanup_push(dblk, blk_cleanup);
setq(STRdirstack, dblk, &shvhed, VAR_READWRITE);
cleanup_ignore(dblk);
cleanup_until(dblk);
}
/*ARGSUSED*/
void
shift(Char **v, struct command *c)
{
struct varent *argv;
Char *name;
USE(c);
v++;
name = *v;
if (name == 0)
name = STRargv;
else
(void) strip(name);
argv = adrof(name);
if (argv == NULL || argv->vec == NULL)
udvar(name);
if (argv->vec[0] == 0)
stderror(ERR_NAME | ERR_NOMORE);
lshift(argv->vec, 1);
update_vars(name);
}
/*
* Expand and glob the words after an i/o redirection.
* If more than one word is generated, then update the command vector.
*
* This is done differently in all the shells:
* 1. in the bourne shell and ksh globbing is not performed
* 2. Bash/csh say ambiguous
* 3. zsh does i/o to/from all the files
* 4. itcsh concatenates the words.
*
* I don't know what is best to do. I think that Ambiguous is better
* than restructuring the command vector, because the user can get
* unexpected results. In any case, the command vector restructuring
* code is present and the user can choose it by setting noambiguous
*/
static Char *
splicepipe(struct command *t, Char *cp)
{
Char *blk[2];
if (adrof(STRnoambiguous)) {
Char **pv;
int gflag;
blk[0] = Dfix1(cp); /* expand $ */
blk[1] = NULL;
gflag = tglob(blk);
if (gflag) {
pv = globall(blk, gflag);
if (pv == NULL) {
setname(short2str(blk[0]));
xfree(blk[0]);
stderror(ERR_NAME | ERR_NOMATCH);
}
if (pv[1] != NULL) { /* we need to fix the command vector */
Char **av = blkspl(t->t_dcom, &pv[1]);
xfree(t->t_dcom);
t->t_dcom = av;
}
xfree(blk[0]);
blk[0] = pv[0];
xfree(pv);
}
}
else {
Char *buf;
buf = Dfix1(cp);
cleanup_push(buf, xfree);
blk[0] = globone(buf, G_ERROR);
cleanup_until(buf);
}
return(blk[0]);
}
void
/*ARGSUSED*/
dohash(Char **v, struct command *t)
{
struct dirent *dp;
struct varent *pathv;
DIR *dirp;
Char **pv;
size_t cnt;
int hashval, i;
i = 0;
havhash = 1;
pathv = adrof(STRpath);
for (cnt = 0; cnt < sizeof xhash; cnt++)
xhash[cnt] = 0;
if (pathv == 0)
return;
for (pv = pathv->vec; *pv; pv++, i++) {
if (pv[0][0] != '/')
continue;
dirp = opendir(short2str(*pv));
if (dirp == NULL)
continue;
while ((dp = readdir(dirp)) != NULL) {
if (dp->d_ino == 0)
continue;
if (dp->d_name[0] == '.' &&
(dp->d_name[1] == '\0' ||
(dp->d_name[1] == '.' && dp->d_name[2] == '\0')))
continue;
hashval = hash(hashname(str2short(dp->d_name)), i);
bis(xhash, hashval);
/* tw_add_comm_name (dp->d_name); */
}
(void) closedir(dirp);
}
}
/*
* Expand and glob the words after an i/o redirection.
* If more than one word is generated, then update the command vector.
*
* This is done differently in all the shells:
* 1. in the bourne shell and ksh globbing is not performed
* 2. Bash/csh say ambiguous
* 3. zsh does i/o to/from all the files
* 4. itcsh concatenates the words.
*
* I don't know what is best to do. I think that Ambiguous is better
* than restructuring the command vector, because the user can get
* unexpected results. In any case, the command vector restructuring
* code is present and the user can choose it by setting noambiguous
*/
static Char *
splicepipe(struct command *t, Char *cp /* word after < or > */)
{
Char *blk[2];
if (adrof(STRnoambiguous)) {
Char **pv;
blk[0] = Dfix1(cp); /* expand $ */
blk[1] = NULL;
gflag = 0, tglob(blk);
if (gflag) {
pv = globall(blk);
if (pv == NULL) {
setname(vis_str(blk[0]));
xfree((ptr_t) blk[0]);
stderror(ERR_NAME | ERR_NOMATCH);
/* NOTREACHED */
}
gargv = NULL;
if (pv[1] != NULL) { /* we need to fix the command vector */
Char **av = blkspl(t->t_dcom, &pv[1]);
xfree((ptr_t) t->t_dcom);
t->t_dcom = av;
}
xfree((ptr_t) blk[0]);
blk[0] = pv[0];
xfree((ptr_t) pv);
}
}
else {
blk[0] = globone(blk[1] = Dfix1(cp), G_ERROR);
xfree((ptr_t) blk[1]);
}
return(blk[0]);
}
static int
tellmewhat(struct wordent *lexp, Char *str)
{
struct biltins *bptr;
struct wordent *sp;
Char *cmd, *s0, *s1, *s2;
int i;
int aliased, found;
Char qc;
aliased = 0;
sp = lexp->next;
if (adrof1(sp->word, &aliases)) {
alias(lexp);
sp = lexp->next;
aliased = 1;
}
s0 = sp->word; /* to get the memory freeing right... */
/* handle quoted alias hack */
if ((*(sp->word) & (QUOTE | TRIM)) == QUOTE)
(sp->word)++;
/* do quoting, if it hasn't been done */
s1 = s2 = sp->word;
while (*s2)
switch (*s2) {
case '\'':
case '"':
qc = *s2++;
while (*s2 && *s2 != qc)
*s1++ = (Char)(*s2++ | QUOTE);
if (*s2)
s2++;
break;
case '\\':
if (*++s2)
*s1++ = (Char)(*s2++ | QUOTE);
break;
default:
*s1++ = *s2++;
}
*s1 = '\0';
for (bptr = bfunc; bptr < &bfunc[nbfunc]; bptr++) {
if (eq(sp->word, str2short(bptr->bname))) {
if (str == NULL) {
if (aliased)
prlex(cshout, lexp);
(void)fprintf(cshout, "%s: shell built-in command.\n",
vis_str(sp->word));
}
else
(void)Strcpy(str, sp->word);
sp->word = s0; /* we save and then restore this */
return 1;
}
}
sp->word = cmd = globone(sp->word, G_IGNORE);
if ((i = iscommand(sp->word)) != 0) {
Char **pv;
struct varent *v;
int slash = any(short2str(sp->word), '/');
v = adrof(STRpath);
if (v == 0 || v->vec[0] == 0 || slash)
pv = justabs;
else
pv = v->vec;
while (--i)
pv++;
if (pv[0][0] == 0 || eq(pv[0], STRdot)) {
if (!slash) {
sp->word = Strspl(STRdotsl, sp->word);
prlex(cshout, lexp);
free(sp->word);
}
else
prlex(cshout, lexp);
}
else {
s1 = Strspl(*pv, STRslash);
sp->word = Strspl(s1, sp->word);
free(s1);
if (str == NULL)
prlex(cshout, lexp);
else
(void)Strcpy(str, sp->word);
free(sp->word);
}
found = 1;
}
else {
if (str == NULL) {
if (aliased)
prlex(cshout, lexp);
(void)fprintf(csherr,
"%s: Command not found.\n", vis_str(sp->word));
}
else
(void)Strcpy(str, sp->word);
found = 0;
}
sp->word = s0; /* we save and then restore this */
free(cmd);
return found;
}
/*
* Execute command f, arg list t.
* Record error message if not found.
* Also do shell scripts here.
*/
static void
texec(Char *sf, Char **st)
{
struct varent *v;
Char *lastsh[2], **vp, *st0, **ost;
char *f, **t;
int fd;
unsigned char c = '\0';
/* The order for the conversions is significant */
t = short2blk(st);
f = short2str(sf);
Vt = t;
errno = 0; /* don't use a previous error */
(void)execve(f, t, environ);
Vt = 0;
blkfree((Char **)t);
switch (errno) {
case ENOEXEC:
/*
* From: [email protected] (Casper H.S. Dik) If we could not execute
* it, don't feed it to the shell if it looks like a binary!
*/
if ((fd = open(f, O_RDONLY)) != -1) {
if (read(fd, (char *)&c, 1) == 1) {
if (!Isprint(c) && (c != '\n' && c != '\t')) {
(void)close(fd);
/*
* We *know* what ENOEXEC means.
*/
stderror(ERR_ARCH, f, strerror(errno));
}
}
#ifdef _PATH_BSHELL
else
c = '#';
#endif
(void)close(fd);
}
/*
* If there is an alias for shell, then put the words of the alias in
* front of the argument list replacing the command name. Note no
* interpretation of the words at this point.
*/
v = adrof1(STRshell, &aliases);
if (v == 0) {
vp = lastsh;
vp[0] = adrof(STRshell) ? value(STRshell) : STR_SHELLPATH;
vp[1] = NULL;
#ifdef _PATH_BSHELL
if (fd != -1 && c != '#')
vp[0] = STR_BSHELL;
#endif
}
else
vp = v->vec;
st0 = st[0];
st[0] = sf;
ost = st;
st = blkspl(vp, st); /* Splice up the new arglst */
ost[0] = st0;
sf = *st;
/* The order for the conversions is significant */
t = short2blk(st);
f = short2str(sf);
free(st);
Vt = t;
(void)execve(f, t, environ);
Vt = 0;
blkfree((Char **)t);
/* FALLTHROUGH */
case ENOMEM:
stderror(ERR_SYSTEM, f, strerror(errno));
/* NOTREACHED */
case ENOENT:
break;
default:
if (exerr == 0) {
exerr = strerror(errno);
if (expath)
free(expath);
expath = Strsave(sf);
Vexpath = expath;
}
}
}
void
/*ARGSUSED*/
doexec(Char **v, struct command *t)
{
struct varent *pathv;
Char *blk[2], **av, *dp, **pv, *sav;
int i, hashval, hashval1;
sigset_t nsigset;
int slash;
hashval = 0;
/*
* Glob the command name. We will search $path even if this does something,
* as in sh but not in csh. One special case: if there is no PATH, then we
* execute only commands which start with '/'.
*/
blk[0] = t->t_dcom[0];
blk[1] = 0;
gflag = 0, tglob(blk);
if (gflag) {
pv = globall(blk);
if (pv == 0) {
setname(vis_str(blk[0]));
stderror(ERR_NAME | ERR_NOMATCH);
}
gargv = 0;
}
else
pv = saveblk(blk);
trim(pv);
exerr = 0;
expath = Strsave(pv[0]);
Vexpath = expath;
pathv = adrof(STRpath);
if (pathv == 0 && expath[0] != '/') {
blkfree(pv);
pexerr();
}
slash = any(short2str(expath), '/');
/*
* Glob the argument list, if necessary. Otherwise trim off the quote bits.
*/
gflag = 0;
av = &t->t_dcom[1];
tglob(av);
if (gflag) {
av = globall(av);
if (av == 0) {
blkfree(pv);
setname(vis_str(expath));
stderror(ERR_NAME | ERR_NOMATCH);
}
gargv = 0;
}
else
av = saveblk(av);
blkfree(t->t_dcom);
t->t_dcom = blkspl(pv, av);
free(pv);
free(av);
av = t->t_dcom;
trim(av);
if (*av == NULL || **av == '\0')
pexerr();
xechoit(av); /* Echo command if -x */
/*
* Since all internal file descriptors are set to close on exec, we don't
* need to close them explicitly here. Just reorient ourselves for error
* messages.
*/
SHIN = 0;
SHOUT = 1;
SHERR = 2;
OLDSTD = 0;
/*
* We must do this AFTER any possible forking (like `foo` in glob) so that
* this shell can still do subprocesses.
*/
sigemptyset(&nsigset);
(void)sigprocmask(SIG_SETMASK, &nsigset, NULL);
/*
* If no path, no words in path, or a / in the filename then restrict the
* command search.
*/
if (pathv == 0 || pathv->vec[0] == 0 || slash)
pv = justabs;
else
pv = pathv->vec;
sav = Strspl(STRslash, *av); /* / command name for postpending */
Vsav = sav;
if (havhash)
hashval = hashname(*av);
i = 0;
hits++;
do {
/*
* Try to save time by looking at the hash table for where this command
* could be. If we are doing delayed hashing, then we put the names in
* one at a time, as the user enters them. This is kinda like Korn
* Shell's "tracked aliases".
*/
if (!slash && pv[0][0] == '/' && havhash) {
hashval1 = hash(hashval, i);
if (!bit(xhash, hashval1))
goto cont;
}
if (pv[0][0] == 0 || eq(pv[0], STRdot)) /* don't make ./xxx */
texec(*av, av);
else {
dp = Strspl(*pv, sav);
Vdp = dp;
texec(dp, av);
Vdp = 0;
free(dp);
}
misses++;
cont:
pv++;
i++;
} while (*pv);
hits--;
Vsav = 0;
free(sav);
pexerr();
/* NOTREACHED */
}
