int
evalcmd(shinstance *psh, int argc, char **argv)
{
char *p;
char *concat;
char **ap;
if (argc > 1) {
p = argv[1];
if (argc > 2) {
STARTSTACKSTR(psh, concat);
ap = argv + 2;
for (;;) {
while (*p)
STPUTC(psh, *p++, concat);
if ((p = *ap++) == NULL)
break;
STPUTC(psh, ' ', concat);
}
STPUTC(psh, '\0', concat);
p = grabstackstr(psh, concat);
}
evalstring(psh, p, EV_TESTED);
}
return psh->exitstatus;
}
int
evalcmd(int argc, char **argv)
{
char *p;
char *concat;
char **ap;
if (argc > 1) {
p = argv[1];
if (argc > 2) {
STARTSTACKSTR(concat);
ap = argv + 2;
for (;;) {
while (*p)
STPUTC(*p++, concat);
if ((p = *ap++) == NULL)
break;
STPUTC(' ', concat);
}
STPUTC('\0', concat);
p = grabstackstr(concat);
}
evalstring(p);
}
return exitstatus;
}
/*
* Called to execute a trap. Perhaps we should avoid entering new trap
* handlers while we are executing a trap handler.
*/
void
dotrap(void)
{
int i;
int savestatus;
in_dotrap++;
for (;;) {
for (i = 1; i < _NSIG; i++) {
if (gotsig[i]) {
gotsig[i] = 0;
if (trap[i]) {
/*
* Ignore SIGCHLD to avoid infinite
* recursion if the trap action does
* a fork.
*/
if (i == SIGCHLD)
ignore_sigchld++;
savestatus = exitstatus;
evalstring(trap[i]);
exitstatus = savestatus;
if (i == SIGCHLD)
ignore_sigchld--;
}
break;
}
}
if (i >= _NSIG)
break;
}
in_dotrap--;
pendingsigs = 0;
}
int
evalcmd(int argc, char **argv)
{
char *p;
char *concat;
char **ap;
if (argc > 1) {
p = argv[1];
if (argc > 2) {
STARTSTACKSTR(concat);
ap = argv + 2;
for (;;) {
concat = stputs(p, concat);
if ((p = *ap++) == NULL)
break;
STPUTC(' ', concat);
}
STPUTC('\0', concat);
p = grabstackstr(concat);
}
return evalstring(p, ~SKIPEVAL);
}
return 0;
}
void
exitshell(void)
{
struct jmploc loc;
char *p;
volatile int status;
#ifdef HETIO
hetio_reset_term();
#endif
status = exitstatus;
TRACE(("pid %d, exitshell(%d)\n", getpid(), status));
if (setjmp(loc.loc)) {
if (exception == EXEXIT)
status = exitstatus;
goto out;
}
handler = &loc;
if ((p = trap[0])) {
trap[0] = NULL;
evalskip = 0;
evalstring(p, 0);
}
out:
/*
* Disable job control so that whoever had the foreground before we
* started can get it back.
*/
if (likely(!setjmp(loc.loc)))
setjobctl(0);
flushall();
_exit(status);
/* NOTREACHED */
}
void
exitshell(int status)
{
struct jmploc loc1, loc2;
char *p;
TRACE(("pid %d, exitshell(%d)\n", getpid(), status));
if (setjmp(loc1.loc)) {
goto l1;
}
if (setjmp(loc2.loc)) {
goto l2;
}
handler = &loc1;
if ((p = trap[0]) != NULL && *p != '\0') {
trap[0] = NULL;
evalstring(p, 0);
}
l1: handler = &loc2; /* probably unnecessary */
flushall();
#if JOBS
setjobctl(0);
#endif
l2: _exit(status);
/* NOTREACHED */
}
void dotrap(void)
{
char *p;
char *q;
int i;
int savestatus;
savestatus = exitstatus;
pendingsigs = 0;
barrier();
for (i = 0, q = gotsig; i < NSIG - 1; i++, q++) {
if (!*q)
continue;
*q = 0;
p = trap[i + 1];
if (!p)
continue;
evalstring(p, 0);
exitstatus = savestatus;
if (evalskip)
break;
}
}
SH_NORETURN_1 void
exitshell(shinstance *psh, int status)
{
struct jmploc loc1, loc2;
char *p;
TRACE((psh, "pid %d, exitshell(%d)\n", sh_getpid(psh), status));
if (setjmp(loc1.loc)) {
goto l1;
}
if (setjmp(loc2.loc)) {
goto l2;
}
psh->handler = &loc1;
if ((p = psh->trap[0]) != NULL && *p != '\0') {
psh->trap[0] = NULL;
evalstring(psh, p, 0);
}
l1: psh->handler = &loc2; /* probably unnecessary */
output_flushall(psh);
#if JOBS
setjobctl(psh, 0);
#endif
l2: sh__exit(psh, status);
/* NOTREACHED */
}
int
evalcmd(int argc, char **argv)
{
char *p;
char *concat;
char **ap;
if (argc > 1) {
p = argv[1];
if (argc > 2) {
STARTSTACKSTR(concat);
ap = argv + 2;
for (;;) {
STPUTS(p, concat);
if ((p = *ap++) == NULL)
break;
STPUTC(' ', concat);
}
STPUTC('\0', concat);
p = grabstackstr(concat);
}
evalstring(p, builtin_flags);
} else
exitstatus = 0;
return exitstatus;
}
void
dotrap(void)
{
int i;
int savestatus;
char *tr;
for (;;) {
for (i = 1 ; ; i++) {
if (i >= NSIG) {
pendingsigs = 0;
return;
}
if (gotsig[i])
break;
}
gotsig[i] = 0;
savestatus=exitstatus;
CTRACE(DBG_TRAP|DBG_SIG, ("dotrap %d: \"%s\"\n", i,
trap[i] ? trap[i] : "-NULL-"));
tr = savestr(trap[i]); /* trap code may free trap[i] */
evalstring(tr, 0);
ckfree(tr);
exitstatus=savestatus;
}
}
void
exitshell(void)
{
struct jmploc loc;
char *p;
savestatus = exitstatus;
TRACE(("pid %d, exitshell(%d)\n", getpid(), savestatus));
if (setjmp(loc.loc))
goto out;
handler = &loc;
if ((p = trap[0])) {
trap[0] = NULL;
evalskip = 0;
evalstring(p, 0);
}
out:
/*
* Disable job control so that whoever had the foreground before we
* started can get it back.
*/
if (likely(!setjmp(loc.loc)))
setjobctl(0);
flushall();
_exit(savestatus);
/* NOTREACHED */
}
void
dotrap(void)
{
int i;
char *tr;
int savestatus;
struct skipsave saveskip;
in_dotrap++;
CTRACE(DBG_TRAP, ("dotrap[%d]: %d pending, traps %sinvalid\n",
in_dotrap, pendingsigs, traps_invalid ? "" : "not "));
for (;;) {
pendingsigs = 0;
for (i = 1 ; ; i++) {
if (i >= NSIG)
return;
if (gotsig[i])
break;
}
gotsig[i] = 0;
if (traps_invalid)
continue;
tr = trap[i];
CTRACE(DBG_TRAP|DBG_SIG, ("dotrap %d: %s%s%s\n", i,
tr ? "\"" : "", tr ? tr : "NULL", tr ? "\"" : ""));
if (tr != NULL) {
last_trapsig = i;
save_skipstate(&saveskip);
savestatus = exitstatus;
tr = savestr(tr); /* trap code may free trap[i] */
evalstring(tr, 0);
ckfree(tr);
if (current_skipstate() == SKIPNONE ||
saveskip.state != SKIPNONE) {
restore_skipstate(&saveskip);
exitstatus = savestatus;
}
}
}
in_dotrap--;
}
void
exitshell_savedstatus(void)
{
struct jmploc loc1, loc2;
char *p;
int sig = 0;
sigset_t sigs;
if (!exiting) {
if (in_dotrap && last_trapsig) {
sig = last_trapsig;
exiting_exitstatus = sig + 128;
} else
exiting_exitstatus = oexitstatus;
}
exitstatus = oexitstatus = exiting_exitstatus;
if (setjmp(loc1.loc)) {
goto l1;
}
if (setjmp(loc2.loc)) {
goto l2;
}
handler = &loc1;
if ((p = trap[0]) != NULL && *p != '\0') {
/*
* Reset evalskip, or the trap on EXIT could be
* interrupted if the last command was a "return".
*/
evalskip = 0;
trap[0] = NULL;
evalstring(p, 0);
}
l1: handler = &loc2; /* probably unnecessary */
flushall();
#if JOBS
setjobctl(0);
#endif
l2:
if (sig != 0 && sig != SIGSTOP && sig != SIGTSTP && sig != SIGTTIN &&
sig != SIGTTOU) {
signal(sig, SIG_DFL);
sigemptyset(&sigs);
sigaddset(&sigs, sig);
sigprocmask(SIG_UNBLOCK, &sigs, NULL);
kill(getpid(), sig);
/* If the default action is to ignore, fall back to _exit(). */
}
_exit(exiting_exitstatus);
}
void
dotrap(shinstance *psh)
{
int i;
int savestatus;
for (;;) {
for (i = 1 ; ; i++) {
if (psh->gotsig[i - 1])
break;
if (i >= NSIG)
goto done;
}
psh->gotsig[i - 1] = 0;
savestatus=psh->exitstatus;
evalstring(psh, psh->trap[i], 0);
psh->exitstatus=savestatus;
}
done:
psh->pendingsigs = 0;
}
void
dotrap(void)
{
int i;
int savestatus;
for (;;) {
for (i = 1 ; ; i++) {
if (gotsig[i - 1])
break;
if (i >= NSIG)
goto done;
}
gotsig[i - 1] = 0;
savestatus=exitstatus;
evalstring(trap[i], 0);
exitstatus=savestatus;
}
done:
pendingsigs = 0;
}
void dotrap(void)
{
char *p;
char *q;
int i;
int status, last_status;
if (!pendingsigs)
return;
status = savestatus;
last_status = status;
if (likely(status < 0)) {
status = exitstatus;
savestatus = status;
}
pendingsigs = 0;
barrier();
for (i = 0, q = gotsig; i < NSIG - 1; i++, q++) {
if (!*q)
continue;
if (evalskip) {
pendingsigs = i + 1;
break;
}
*q = 0;
p = trap[i + 1];
if (!p)
continue;
evalstring(p, 0);
if (evalskip != SKIPFUNC)
exitstatus = status;
}
savestatus = last_status;
}
int
main(int argc, char **argv)
{
struct jmploc jmploc;
struct stackmark smark;
volatile int state;
char *shinit;
setlocale(LC_ALL, "");
/* Just a --version for show. */
if (argc > 1
&& argv[1][0] == '-'
&& argv[1][1] == '-') {
if (!strcmp(&argv[1][2], "version")) {
printf("kmk_ash - kBuild version %d.%d.%d\n",
KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH);
return 0;
}
if (!strcmp(&argv[1][2], "help")) {
printf("usage: kmk_ash [-aCefnuvxIimqVEb] [+aCefnuvxIimqVEb] [-o option_name]\n"
" [+o option_name] [command_file [argument ...]]\n"
" or: kmk_ash -c [-aCefnuvxIimqVEb] [+aCefnuvxIimqVEb] [-o option_name]\n"
" [+o option_name] command_string [command_name [argument ...]]\n"
" or: kmk_ash -s [-aCefnuvxIimqVEb] [+aCefnuvxIimqVEb] [-o option_name]\n"
" [+o option_name] [argument ...]\n"
" or: kmk_ash --help\n"
" or: kmk_ash --version\n",
argv[0], argv[0], argv[0], argv[0], argv[0]);
return 0;
}
}
#if PROFILE
monitor(4, etext, profile_buf, sizeof profile_buf, 50);
#endif
state = 0;
if (setjmp(jmploc.loc)) {
/*
* When a shell procedure is executed, we raise the
* exception EXSHELLPROC to clean up before executing
* the shell procedure.
*/
switch (exception) {
case EXSHELLPROC:
rootpid = getpid();
rootshell = 1;
minusc = NULL;
state = 3;
break;
case EXEXEC:
exitstatus = exerrno;
break;
case EXERROR:
exitstatus = 2;
break;
default:
break;
}
if (exception != EXSHELLPROC) {
if (state == 0 || iflag == 0 || ! rootshell)
exitshell(exitstatus);
}
reset();
if (exception == EXINT
#if ATTY
&& (! attyset() || equal(termval(), "emacs"))
#endif
) {
out2c('\n');
flushout(&errout);
}
popstackmark(&smark);
FORCEINTON; /* enable interrupts */
if (state == 1)
goto state1;
else if (state == 2)
goto state2;
else if (state == 3)
goto state3;
else
goto state4;
}
handler = &jmploc;
#ifdef DEBUG
#if DEBUG == 2
debug = 1;
#endif
opentrace();
trputs("Shell args: "); trargs(argv);
#endif
rootpid = getpid();
rootshell = 1;
#ifdef _MSC_VER
{
extern void init_syntax(void);
init_syntax();
}
#endif
init();
setstackmark(&smark);
procargs(argc, argv);
if (argv[0] && argv[0][0] == '-') {
state = 1;
#ifndef KMK
read_profile("/etc/profile");
#endif
state1:
state = 2;
#ifndef KMK
read_profile(".profile");
#endif
}
state2:
state = 3;
#ifndef KMK
if (getuid() == geteuid() && getgid() == getegid()) {
if ((shinit = lookupvar("ENV")) != NULL && *shinit != '\0') {
state = 3;
read_profile(shinit);
}
}
#endif
state3:
state = 4;
if (sflag == 0 || minusc) {
static int sigs[] = {
SIGINT, SIGQUIT, SIGHUP,
#ifdef SIGTSTP
SIGTSTP,
#endif
SIGPIPE
};
#define SIGSSIZE (sizeof(sigs)/sizeof(sigs[0]))
int i;
for (i = 0; i < SIGSSIZE; i++)
setsignal(sigs[i], 0);
}
if (minusc)
evalstring(minusc, 0);
if (sflag || minusc == NULL) {
state4: /* XXX ??? - why isn't this before the "if" statement */
cmdloop(1);
}
#if PROFILE
monitor(0);
#endif
exitshell(exitstatus);
/* NOTREACHED */
}
int
main(int argc, char *argv[])
{
struct stackmark smark, smark2;
volatile int state;
char *shinit;
#ifdef CBSD
char *MY_APP = NULL;
char *cbsdpath = NULL;
char *workdir = NULL;
char *cbsd_disable_history = NULL; //getenv
chdir("/var/empty");
/* Only use history when stdin is a tty. */
if ( isatty(0) && isatty(1) ) {
cbsd_enable_history = 1;
}
#endif
(void) setlocale(LC_ALL, "");
initcharset();
state = 0;
if (setjmp(main_handler.loc)) {
switch (exception) {
case EXEXEC:
exitstatus = exerrno;
break;
case EXERROR:
exitstatus = 2;
break;
default:
break;
}
if (state == 0 || iflag == 0 || ! rootshell ||
exception == EXEXIT)
exitshell(exitstatus);
reset();
if (exception == EXINT)
out2fmt_flush("\n");
popstackmark(&smark);
FORCEINTON; /* enable interrupts */
if (state == 1)
goto state1;
else if (state == 2)
goto state2;
else if (state == 3)
goto state3;
else
goto state4;
}
handler = &main_handler;
#ifdef DEBUG
opentrace();
trputs("Shell args: "); trargs(argv);
#endif
rootpid = getpid();
rootshell = 1;
INTOFF;
initvar();
setstackmark(&smark);
setstackmark(&smark2);
#ifdef CBSD
if (argc>1) {
if (!strcmp(argv[1],"--help")) {
system("/usr/local/bin/cbsd help");
exit(0);
} else {
if (!strcmp(argv[1],"version")) {
printf("%s\n",VERSION);
exit(0);
}
}
}
cbsd_disable_history=lookupvar("NO_CBSD_HISTORY");
if ( cbsd_disable_history != NULL ) cbsd_enable_history=0;
workdir=lookupvar("workdir");
if ( workdir == NULL ) {
read_profile("/etc/rc.conf");
setvarsafe("workdir", lookupvar("cbsd_workdir"), 0);
}
workdir=lookupvar("workdir");
if ( workdir == NULL ) {
out2fmt_flush("cbsd: no workdir defined\n");
exitshell(1);
}
setvarsafe("PS1","cbsd@\\h> ",1);
setvarsafe("workdir",workdir,1);
workdir=lookupvar("workdir"); // ^^ after "setsave*" original is free
cbsdpath = calloc(MAXPATHLEN, sizeof(char *));
if (argv[1]) {
setvarsafe("CBSD_APP",basename(argv[1]),1);
}
if (cbsdpath == NULL) {
out2fmt_flush("cbsd: out of memory for cbsdpath\n");
exitshell(1);
}
// %s/modules must be first for opportunity to have a module commands greater priority than the original CBSD command.
// This makes it possible to write a 3rd party modules with altered functionality of the original code.
sprintf(cbsdpath,"%s/modules:%s/bin:%s/sbin:%s/tools:%s/jailctl:%s/nodectl:%s/system:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin",workdir,cbsd_distdir,cbsd_distdir,cbsd_distdir,cbsd_distdir,cbsd_distdir,cbsd_distdir);
setvarsafe("PATH",cbsdpath,1);
ckfree(cbsdpath);
// read global params first (disable/enable colors, repos etc..)
read_profile("${workdir}/etc/defaults/global.conf");
read_profile("${workdir}/etc/global.conf");
if (lookupvar("NOCOLOR") != NULL ) {
putenv("NOCOLOR=1");
}
// non-interactive global env
if (lookupvar("NOINTER") != NULL ) {
setvarsafe("inter","1",1);
putenv("inter=0");
}
read_profile("/usr/local/cbsd/cbsd.conf");
read_profile("${workdir}/etc/defaults/logger.conf");
read_profile("${workdir}/etc/logger.conf");
if (cbsd_enable_history==1) {
cbsd_history_file=calloc(MAXPATHLEN, sizeof(char *));
sprintf(cbsd_history_file,"%s/%s",workdir,CBSD_HISTORYFILE);
}
#endif
procargs(argc, argv);
pwd_init(iflag);
INTON;
#ifndef CBSD
if (iflag)
chkmail(1);
#endif
if (argv[0] && argv[0][0] == '-') {
state = 1;
read_profile("/etc/profile");
state1:
state = 2;
if (privileged == 0)
read_profile("${HOME-}/.profile");
else
read_profile("/etc/suid_profile");
}
state2:
state = 3;
if (!privileged && iflag) {
if ((shinit = lookupvar("ENV")) != NULL && *shinit != '\0') {
state = 3;
read_profile(shinit);
}
}
state3:
state = 4;
popstackmark(&smark2);
if (minusc) {
evalstring(minusc, sflag ? 0 : EV_EXIT);
}
state4:
if (sflag || minusc == NULL) {
cmdloop(1);
}
exitshell(exitstatus);
/*NOTREACHED*/
return 0;
}
/*
* This command is provided since POSIX decided to standardize
* the Korn shell fc command. Oh well...
*/
int
histcmd(volatile int argc, char ** volatile argv)
{
int ch;
const char * volatile editor = NULL;
HistEvent he;
volatile int lflg = 0, nflg = 0, rflg = 0, sflg = 0;
int i, retval;
const char *firststr, *laststr;
int first, last, direction;
char * volatile pat = NULL, * volatile repl; /* ksh "fc old=new" crap */
static int active = 0;
struct jmploc jmploc;
struct jmploc *volatile savehandler;
char editfile[MAXPATHLEN + 1];
FILE * volatile efp;
#ifdef __GNUC__
repl = NULL; /* XXX gcc4 */
efp = NULL; /* XXX gcc4 */
#endif
if (hist == NULL)
error("history not active");
if (argc == 1)
error("missing history argument");
optreset = 1; optind = 1; /* initialize getopt */
while (not_fcnumber(argv[optind]) &&
(ch = getopt(argc, argv, ":e:lnrs")) != -1)
switch ((char)ch) {
case 'e':
editor = optionarg;
break;
case 'l':
lflg = 1;
break;
case 'n':
nflg = 1;
break;
case 'r':
rflg = 1;
break;
case 's':
sflg = 1;
break;
case ':':
error("option -%c expects argument", optopt);
/* NOTREACHED */
case '?':
default:
error("unknown option: -%c", optopt);
/* NOTREACHED */
}
argc -= optind, argv += optind;
/*
* If executing...
*/
if (lflg == 0 || editor || sflg) {
lflg = 0; /* ignore */
editfile[0] = '\0';
/*
* Catch interrupts to reset active counter and
* cleanup temp files.
*/
savehandler = handler;
if (setjmp(jmploc.loc)) {
active = 0;
if (*editfile)
unlink(editfile);
handler = savehandler;
longjmp(handler->loc, 1);
}
handler = &jmploc;
if (++active > MAXHISTLOOPS) {
active = 0;
displayhist = 0;
error("called recursively too many times");
}
/*
* Set editor.
*/
if (sflg == 0) {
if (editor == NULL &&
(editor = bltinlookup("FCEDIT", 1)) == NULL &&
(editor = bltinlookup("EDITOR", 1)) == NULL)
editor = DEFEDITOR;
if (editor[0] == '-' && editor[1] == '\0') {
sflg = 1; /* no edit */
editor = NULL;
}
}
}
/*
* If executing, parse [old=new] now
*/
if (lflg == 0 && argc > 0 &&
((repl = strchr(argv[0], '=')) != NULL)) {
pat = argv[0];
*repl++ = '\0';
argc--, argv++;
}
/*
* If -s is specified, accept only one operand
*/
if (sflg && argc >= 2)
error("too many args");
/*
* determine [first] and [last]
*/
switch (argc) {
case 0:
firststr = lflg ? "-16" : "-1";
laststr = "-1";
break;
case 1:
firststr = argv[0];
laststr = lflg ? "-1" : argv[0];
break;
case 2:
firststr = argv[0];
laststr = argv[1];
break;
default:
error("too many args");
/* NOTREACHED */
}
/*
* Turn into event numbers.
*/
first = str_to_event(firststr, 0);
last = str_to_event(laststr, 1);
if (rflg) {
i = last;
last = first;
first = i;
}
/*
* XXX - this should not depend on the event numbers
* always increasing. Add sequence numbers or offset
* to the history element in next (diskbased) release.
*/
direction = first < last ? H_PREV : H_NEXT;
/*
* If editing, grab a temp file.
*/
if (editor) {
int fd;
INTOFF; /* easier */
snprintf(editfile, sizeof(editfile), "%s_shXXXXXX", _PATH_TMP);
if ((fd = mkstemp(editfile)) < 0)
error("can't create temporary file %s", editfile);
if ((efp = fdopen(fd, "w")) == NULL) {
close(fd);
error("can't allocate stdio buffer for temp");
}
}
/*
* Loop through selected history events. If listing or executing,
* do it now. Otherwise, put into temp file and call the editor
* after.
*
* The history interface needs rethinking, as the following
* convolutions will demonstrate.
*/
history(hist, &he, H_FIRST);
retval = history(hist, &he, H_NEXT_EVENT, first);
for (;retval != -1; retval = history(hist, &he, direction)) {
if (lflg) {
if (!nflg)
out1fmt("%5d ", he.num);
out1str(he.str);
} else {
const char *s = pat ?
fc_replace(he.str, pat, repl) : he.str;
if (sflg) {
if (displayhist) {
out2str(s);
}
evalstring(strcpy(stalloc(strlen(s) + 1), s), 0);
if (displayhist && hist) {
/*
* XXX what about recursive and
* relative histnums.
*/
history(hist, &he, H_ENTER, s);
}
break;
} else
fputs(s, efp);
}
/*
* At end? (if we were to lose last, we'd sure be
* messed up).
*/
if (he.num == last)
break;
}
if (editor) {
char *editcmd;
size_t cmdlen;
fclose(efp);
cmdlen = strlen(editor) + strlen(editfile) + 2;
editcmd = stalloc(cmdlen);
snprintf(editcmd, cmdlen, "%s %s", editor, editfile);
evalstring(editcmd, 0); /* XXX - should use no JC command */
INTON;
readcmdfile(editfile); /* XXX - should read back - quick tst */
unlink(editfile);
}
if (lflg == 0 && active > 0)
--active;
if (displayhist)
displayhist = 0;
return 0;
}
/*
* Called to execute a trap. Perhaps we should avoid entering new trap
* handlers while we are executing a trap handler.
*/
void
dotrap(void)
{
int i;
int savestatus, prev_evalskip, prev_skipcount;
in_dotrap++;
for (;;) {
pendingsig = 0;
for (i = 1; i < NSIG; i++) {
if (gotsig[i]) {
gotsig[i] = 0;
if (trap[i]) {
/*
* Ignore SIGCHLD to avoid infinite
* recursion if the trap action does
* a fork.
*/
if (i == SIGCHLD)
ignore_sigchld++;
/*
* Backup current evalskip
* state and reset it before
* executing a trap, so that the
* trap is not disturbed by an
* ongoing break/continue/return
* statement.
*/
prev_evalskip = evalskip;
prev_skipcount = skipcount;
evalskip = 0;
last_trapsig = i;
savestatus = exitstatus;
evalstring(trap[i], 0);
/*
* If such a command was not
* already in progress, allow a
* break/continue/return in the
* trap action to have an effect
* outside of it.
*/
if (evalskip == 0 ||
prev_evalskip != 0) {
evalskip = prev_evalskip;
skipcount = prev_skipcount;
exitstatus = savestatus;
}
if (i == SIGCHLD)
ignore_sigchld--;
}
break;
}
}
if (i >= NSIG)
break;
}
in_dotrap--;
}
int
main(int argc, char *argv[])
{
struct stackmark smark, smark2;
volatile int state;
char *shinit;
(void) setlocale(LC_ALL, "");
initcharset();
state = 0;
if (setjmp(main_handler.loc)) {
switch (exception) {
case EXEXEC:
exitstatus = exerrno;
break;
case EXERROR:
exitstatus = 2;
break;
default:
break;
}
if (state == 0 || iflag == 0 || ! rootshell ||
exception == EXEXIT)
exitshell(exitstatus);
reset();
if (exception == EXINT)
out2fmt_flush("\n");
popstackmark(&smark);
FORCEINTON; /* enable interrupts */
if (state == 1)
goto state1;
else if (state == 2)
goto state2;
else if (state == 3)
goto state3;
else
goto state4;
}
handler = &main_handler;
#ifdef DEBUG
opentrace();
trputs("Shell args: "); trargs(argv);
#endif
rootpid = getpid();
rootshell = 1;
init();
setstackmark(&smark);
setstackmark(&smark2);
procargs(argc, argv);
pwd_init(iflag);
if (iflag)
chkmail(1);
if (argv[0] && argv[0][0] == '-') {
state = 1;
read_profile("/etc/profile");
state1:
state = 2;
if (privileged == 0)
read_profile("${HOME-}/.profile");
else
read_profile("/etc/suid_profile");
}
state2:
state = 3;
if (!privileged && iflag) {
if ((shinit = lookupvar("ENV")) != NULL && *shinit != '\0') {
state = 3;
read_profile(shinit);
}
}
state3:
state = 4;
popstackmark(&smark2);
if (minusc) {
evalstring(minusc, sflag ? 0 : EV_EXIT);
}
if (sflag || minusc == NULL) {
state4: /* XXX ??? - why isn't this before the "if" statement */
cmdloop(1);
}
exitshell(exitstatus);
/*NOTREACHED*/
return 0;
}
SH_NORETURN_1 void
shell_main(shinstance *psh, int argc, char **argv)
{
struct jmploc jmploc;
struct stackmark smark;
volatile int state;
char *shinit;
state = 0;
if (setjmp(jmploc.loc)) {
/*
* When a shell procedure is executed, we raise the
* exception EXSHELLPROC to clean up before executing
* the shell procedure.
*/
switch (psh->exception) {
case EXSHELLPROC:
psh->rootpid = /*getpid()*/ psh->pid;
psh->rootshell = 1;
psh->minusc = NULL;
state = 3;
break;
case EXEXEC:
psh->exitstatus = psh->exerrno;
break;
case EXERROR:
psh->exitstatus = 2;
break;
default:
break;
}
if (psh->exception != EXSHELLPROC) {
if (state == 0 || iflag(psh) == 0 || ! psh->rootshell)
exitshell(psh, psh->exitstatus);
}
reset(psh);
if (psh->exception == EXINT
#if ATTY
&& (! attyset(psh) || equal(termval(psh), "emacs"))
#endif
) {
out2c(psh, '\n');
flushout(&psh->errout);
}
popstackmark(psh, &smark);
FORCEINTON; /* enable interrupts */
if (state == 1)
goto state1;
else if (state == 2)
goto state2;
else if (state == 3)
goto state3;
else
goto state4;
}
psh->handler = &jmploc;
psh->rootpid = /*getpid()*/ psh->pid;
psh->rootshell = 1;
#ifdef DEBUG
#if DEBUG == 2
debug(psh) = 1;
#endif
opentrace(psh);
trputs(psh, "Shell args: "); trargs(psh, argv);
#endif
init(psh);
setstackmark(psh, &smark);
procargs(psh, argc, argv);
if (argv[0] && argv[0][0] == '-') {
state = 1;
read_profile(psh, "/etc/profile");
state1:
state = 2;
read_profile(psh, ".profile");
}
state2:
state = 3;
if (sh_getuid(psh) == sh_geteuid(psh) && sh_getgid(psh) == sh_getegid(psh)) {
if ((shinit = lookupvar(psh, "ENV")) != NULL && *shinit != '\0') {
state = 3;
read_profile(psh, shinit);
}
}
state3:
state = 4;
if (sflag(psh) == 0 || psh->minusc) {
static int sigs[] = {
SIGINT, SIGQUIT, SIGHUP,
#ifdef SIGTSTP
SIGTSTP,
#endif
SIGPIPE
};
#define SIGSSIZE (sizeof(sigs)/sizeof(sigs[0]))
unsigned i;
for (i = 0; i < SIGSSIZE; i++)
setsignal(psh, sigs[i], 0);
}
if (psh->minusc)
evalstring(psh, psh->minusc, 0);
if (sflag(psh) || psh->minusc == NULL) {
state4: /* XXX ??? - why isn't this before the "if" statement */
cmdloop(psh, 1);
}
exitshell(psh, psh->exitstatus);
/* NOTREACHED */
}
int
main(int argc, char **argv)
{
char *shinit;
volatile int state;
struct jmploc jmploc;
struct stackmark smark;
int login;
int i;
for (i = 1; i < argc; i++) {
if (0 == strcmp(argv[i], "--help") ||
0 == strcmp(argv[i], "-h")) {
sxsh_print_usage();
return (0);
}
if (0 == strcmp(argv[i], "--version") ||
0 == strcmp(argv[i], "-v")) {
sxsh_print_version();
return (0);
}
}
#ifdef __GLIBC__
dash_errno = __errno_location();
#endif
#if PROFILE
monitor(4, etext, profile_buf, sizeof profile_buf, 50);
#endif
state = 0;
if (unlikely(setjmp(jmploc.loc))) {
int e;
int s;
reset();
e = exception;
s = state;
if (e == EXEXIT || s == 0 || iflag == 0 || shlvl)
exitshell();
if (e == EXINT
#if ATTY
&& (! attyset() || equal(termval(), "emacs"))
#endif
) {
out2c('\n');
#ifdef FLUSHERR
flushout(out2);
#endif
}
popstackmark(&smark);
FORCEINTON; /* enable interrupts */
if (s == 1)
goto state1;
else if (s == 2)
goto state2;
else if (s == 3)
goto state3;
else
goto state4;
}
handler = &jmploc;
#ifdef DEBUG
opentrace();
trputs("Shell args: "); trargs(argv);
#endif
rootpid = getpid();
init();
setstackmark(&smark);
login = procargs(argc, argv);
if (login) {
state = 1;
read_profile("/etc/profile");
state1:
state = 2;
read_profile("$HOME/.profile");
}
state2:
state = 3;
if (
#ifndef linux
getuid() == geteuid() && getgid() == getegid() &&
#endif
iflag
) {
if ((shinit = lookupvar("ENV")) != NULL && *shinit != '\0') {
read_profile(shinit);
}
}
popstackmark(&smark);
state3:
state = 4;
if (minusc)
evalstring(minusc, sflag ? 0 : EV_EXIT);
if (sflag || minusc == NULL) {
state4: /* XXX ??? - why isn't this before the "if" statement */
cmdloop(1);
}
#if PROFILE
monitor(0);
#endif
#if GPROF
{
extern void _mcleanup(void);
_mcleanup();
}
#endif
exitshell();
/* NOTREACHED */
}
int
main(int argc, char **argv)
{
struct stackmark smark;
volatile int state;
char *shinit;
uid_t uid;
gid_t gid;
uid = getuid();
gid = getgid();
max_user_fd = fcntl(0, F_MAXFD);
if (max_user_fd < 2)
max_user_fd = 2;
setlocale(LC_ALL, "");
posix = getenv("POSIXLY_CORRECT") != NULL;
#if PROFILE
monitor(4, etext, profile_buf, sizeof profile_buf, 50);
#endif
state = 0;
if (setjmp(main_handler.loc)) {
/*
* When a shell procedure is executed, we raise the
* exception EXSHELLPROC to clean up before executing
* the shell procedure.
*/
switch (exception) {
case EXSHELLPROC:
rootpid = getpid();
rootshell = 1;
minusc = NULL;
state = 3;
break;
case EXEXEC:
exitstatus = exerrno;
break;
case EXERROR:
exitstatus = 2;
break;
default:
break;
}
if (exception != EXSHELLPROC) {
if (state == 0 || iflag == 0 || ! rootshell ||
exception == EXEXIT)
exitshell(exitstatus);
}
reset();
if (exception == EXINT) {
out2c('\n');
flushout(&errout);
}
popstackmark(&smark);
FORCEINTON; /* enable interrupts */
if (state == 1)
goto state1;
else if (state == 2)
goto state2;
else if (state == 3)
goto state3;
else
goto state4;
}
handler = &main_handler;
#ifdef DEBUG
#if DEBUG >= 2
debug = 1; /* this may be reset by procargs() later */
#endif
opentrace();
trputs("Shell args: "); trargs(argv);
#if DEBUG >= 3
set_debug(((DEBUG)==3 ? "_@" : "++"), 1);
#endif
#endif
rootpid = getpid();
rootshell = 1;
init();
initpwd();
setstackmark(&smark);
procargs(argc, argv);
/*
* Limit bogus system(3) or popen(3) calls in setuid binaries,
* by requiring the -p flag
*/
if (!pflag && (uid != geteuid() || gid != getegid())) {
setuid(uid);
setgid(gid);
/* PS1 might need to be changed accordingly. */
choose_ps1();
}
if (argv[0] && argv[0][0] == '-') {
state = 1;
read_profile("/etc/profile");
state1:
state = 2;
read_profile(".profile");
}
state2:
state = 3;
if ((iflag || !posix) &&
getuid() == geteuid() && getgid() == getegid()) {
struct stackmark env_smark;
setstackmark(&env_smark);
if ((shinit = lookupvar("ENV")) != NULL && *shinit != '\0') {
state = 3;
read_profile(expandenv(shinit));
}
popstackmark(&env_smark);
}
state3:
state = 4;
line_number = 1; /* undo anything from profile files */
if (sflag == 0 || minusc) {
static int sigs[] = {
SIGINT, SIGQUIT, SIGHUP,
#ifdef SIGTSTP
SIGTSTP,
#endif
SIGPIPE
};
#define SIGSSIZE (sizeof(sigs)/sizeof(sigs[0]))
size_t i;
for (i = 0; i < SIGSSIZE; i++)
setsignal(sigs[i], 0);
}
if (minusc)
evalstring(minusc, sflag ? 0 : EV_EXIT);
if (sflag || minusc == NULL) {
state4: /* XXX ??? - why isn't this before the "if" statement */
cmdloop(1);
if (iflag) {
out2str("\n");
flushout(&errout);
}
}
#if PROFILE
monitor(0);
#endif
line_number = plinno;
exitshell(exitstatus);
/* NOTREACHED */
}
void
exitshell_savedstatus(void)
{
struct jmploc loc;
char *p;
volatile int sig = 0;
int s;
sigset_t sigs;
CTRACE(DBG_ERRS|DBG_PROCS|DBG_CMDS|DBG_TRAP,
("pid %d: exitshell_savedstatus()%s $?=%d xs=%d dt=%d ts=%d\n",
getpid(), exiting ? " exiting" : "", exitstatus,
exiting_status, in_dotrap, last_trapsig));
if (!exiting) {
if (in_dotrap && last_trapsig) {
sig = last_trapsig;
exiting_status = sig + 128;
} else
exiting_status = exitstatus;
}
exitstatus = exiting_status;
if (!setjmp(loc.loc)) {
handler = &loc;
if (!traps_invalid && (p = trap[0]) != NULL && *p != '\0') {
reset_eval();
trap[0] = NULL;
VTRACE(DBG_TRAP, ("exit trap: \"%s\"\n", p));
evalstring(p, 0);
}
}
INTOFF; /* we're done, no more interrupts. */
if (!setjmp(loc.loc)) {
handler = &loc; /* probably unnecessary */
flushall();
#if JOBS
setjobctl(0);
#endif
}
if ((s = sig) != 0 && s != SIGSTOP && s != SIGTSTP && s != SIGTTIN &&
s != SIGTTOU) {
struct rlimit nocore;
/*
* if the signal is of the core dump variety, don't...
*/
nocore.rlim_cur = nocore.rlim_max = 0;
(void) setrlimit(RLIMIT_CORE, &nocore);
signal(s, SIG_DFL);
sigemptyset(&sigs);
sigaddset(&sigs, s);
sigprocmask(SIG_UNBLOCK, &sigs, NULL);
kill(getpid(), s);
}
_exit(exiting_status);
/* NOTREACHED */
}
