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freebsd-dev/contrib/perl5/perl.c
Mark Murray 2d278eb6c2 Resolve conflicts.
2002-03-16 21:30:07 +00:00

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/* perl.c
*
* Copyright (c) 1987-2001 Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
* $FreeBSD$
*/
/*
* "A ship then new they built for him/of mithril and of elven glass" --Bilbo
*/
#include "EXTERN.h"
#define PERL_IN_PERL_C
#include "perl.h"
#include "patchlevel.h" /* for local_patches */
/* XXX If this causes problems, set i_unistd=undef in the hint file. */
#ifdef I_UNISTD
#include <unistd.h>
#endif
#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
char *getenv (char *); /* Usually in <stdlib.h> */
#endif
static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
#ifdef IAMSUID
#ifndef DOSUID
#define DOSUID
#endif
#endif
#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
#ifdef DOSUID
#undef DOSUID
#endif
#endif
#ifdef PERL_OBJECT
#define perl_construct Perl_construct
#define perl_parse Perl_parse
#define perl_run Perl_run
#define perl_destruct Perl_destruct
#define perl_free Perl_free
#endif
#if defined(USE_THREADS)
# define INIT_TLS_AND_INTERP \
STMT_START { \
if (!PL_curinterp) { \
PERL_SET_INTERP(my_perl); \
INIT_THREADS; \
ALLOC_THREAD_KEY; \
} \
} STMT_END
#else
# if defined(USE_ITHREADS)
# define INIT_TLS_AND_INTERP \
STMT_START { \
if (!PL_curinterp) { \
PERL_SET_INTERP(my_perl); \
INIT_THREADS; \
ALLOC_THREAD_KEY; \
PERL_SET_THX(my_perl); \
OP_REFCNT_INIT; \
} \
else { \
PERL_SET_THX(my_perl); \
} \
} STMT_END
# else
# define INIT_TLS_AND_INTERP \
STMT_START { \
if (!PL_curinterp) { \
PERL_SET_INTERP(my_perl); \
} \
PERL_SET_THX(my_perl); \
} STMT_END
# endif
#endif
#ifdef PERL_IMPLICIT_SYS
PerlInterpreter *
perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
struct IPerlMem* ipMP, struct IPerlEnv* ipE,
struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
struct IPerlDir* ipD, struct IPerlSock* ipS,
struct IPerlProc* ipP)
{
PerlInterpreter *my_perl;
#ifdef PERL_OBJECT
my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
ipLIO, ipD, ipS, ipP);
INIT_TLS_AND_INTERP;
#else
/* New() needs interpreter, so call malloc() instead */
my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
INIT_TLS_AND_INTERP;
Zero(my_perl, 1, PerlInterpreter);
PL_Mem = ipM;
PL_MemShared = ipMS;
PL_MemParse = ipMP;
PL_Env = ipE;
PL_StdIO = ipStd;
PL_LIO = ipLIO;
PL_Dir = ipD;
PL_Sock = ipS;
PL_Proc = ipP;
#endif
return my_perl;
}
#else
/*
=for apidoc perl_alloc
Allocates a new Perl interpreter. See L<perlembed>.
=cut
*/
PerlInterpreter *
perl_alloc(void)
{
PerlInterpreter *my_perl;
/* New() needs interpreter, so call malloc() instead */
my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
INIT_TLS_AND_INTERP;
Zero(my_perl, 1, PerlInterpreter);
return my_perl;
}
#endif /* PERL_IMPLICIT_SYS */
/*
=for apidoc perl_construct
Initializes a new Perl interpreter. See L<perlembed>.
=cut
*/
void
perl_construct(pTHXx)
{
#ifdef USE_THREADS
int i;
#ifndef FAKE_THREADS
struct perl_thread *thr = NULL;
#endif /* FAKE_THREADS */
#endif /* USE_THREADS */
#ifdef MULTIPLICITY
init_interp();
PL_perl_destruct_level = 1;
#else
if (PL_perl_destruct_level > 0)
init_interp();
#endif
/* Init the real globals (and main thread)? */
if (!PL_linestr) {
#ifdef USE_THREADS
MUTEX_INIT(&PL_sv_mutex);
/*
* Safe to use basic SV functions from now on (though
* not things like mortals or tainting yet).
*/
MUTEX_INIT(&PL_eval_mutex);
COND_INIT(&PL_eval_cond);
MUTEX_INIT(&PL_threads_mutex);
COND_INIT(&PL_nthreads_cond);
# ifdef EMULATE_ATOMIC_REFCOUNTS
MUTEX_INIT(&PL_svref_mutex);
# endif /* EMULATE_ATOMIC_REFCOUNTS */
MUTEX_INIT(&PL_cred_mutex);
MUTEX_INIT(&PL_sv_lock_mutex);
MUTEX_INIT(&PL_fdpid_mutex);
thr = init_main_thread();
#endif /* USE_THREADS */
#ifdef PERL_FLEXIBLE_EXCEPTIONS
PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
#endif
PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
PL_linestr = NEWSV(65,79);
sv_upgrade(PL_linestr,SVt_PVIV);
if (!SvREADONLY(&PL_sv_undef)) {
/* set read-only and try to insure than we wont see REFCNT==0
very often */
SvREADONLY_on(&PL_sv_undef);
SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
sv_setpv(&PL_sv_no,PL_No);
SvNV(&PL_sv_no);
SvREADONLY_on(&PL_sv_no);
SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
sv_setpv(&PL_sv_yes,PL_Yes);
SvNV(&PL_sv_yes);
SvREADONLY_on(&PL_sv_yes);
SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
}
#ifdef PERL_OBJECT
/* TODO: */
/* PL_sighandlerp = sighandler; */
#else
PL_sighandlerp = Perl_sighandler;
#endif
PL_pidstatus = newHV();
#ifdef MSDOS
/*
* There is no way we can refer to them from Perl so close them to save
* space. The other alternative would be to provide STDAUX and STDPRN
* filehandles.
*/
(void)fclose(stdaux);
(void)fclose(stdprn);
#endif
}
PL_nrs = newSVpvn("\n", 1);
PL_rs = SvREFCNT_inc(PL_nrs);
init_stacks();
init_ids();
PL_lex_state = LEX_NOTPARSING;
JMPENV_BOOTSTRAP;
STATUS_ALL_SUCCESS;
init_i18nl10n(1);
SET_NUMERIC_STANDARD();
{
U8 *s;
PL_patchlevel = NEWSV(0,4);
(void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
s = (U8*)SvPVX(PL_patchlevel);
s = uv_to_utf8(s, (UV)PERL_REVISION);
s = uv_to_utf8(s, (UV)PERL_VERSION);
s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
*s = '\0';
SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
SvPOK_on(PL_patchlevel);
SvNVX(PL_patchlevel) = (NV)PERL_REVISION
+ ((NV)PERL_VERSION / (NV)1000)
#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
+ ((NV)PERL_SUBVERSION / (NV)1000000)
#endif
;
SvNOK_on(PL_patchlevel); /* dual valued */
SvUTF8_on(PL_patchlevel);
SvREADONLY_on(PL_patchlevel);
}
#if defined(LOCAL_PATCH_COUNT)
PL_localpatches = local_patches; /* For possible -v */
#endif
#ifdef HAVE_INTERP_INTERN
sys_intern_init();
#endif
PerlIO_init(); /* Hook to IO system */
PL_fdpid = newAV(); /* for remembering popen pids by fd */
PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
PL_errors = newSVpvn("",0);
ENTER;
}
/*
=for apidoc perl_destruct
Shuts down a Perl interpreter. See L<perlembed>.
=cut
*/
void
perl_destruct(pTHXx)
{
int destruct_level; /* 0=none, 1=full, 2=full with checks */
HV *hv;
#ifdef USE_THREADS
Thread t;
dTHX;
#endif /* USE_THREADS */
/* wait for all pseudo-forked children to finish */
PERL_WAIT_FOR_CHILDREN;
#ifdef USE_THREADS
#ifndef FAKE_THREADS
/* Pass 1 on any remaining threads: detach joinables, join zombies */
retry_cleanup:
MUTEX_LOCK(&PL_threads_mutex);
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: waiting for %d threads...\n",
PL_nthreads - 1));
for (t = thr->next; t != thr; t = t->next) {
MUTEX_LOCK(&t->mutex);
switch (ThrSTATE(t)) {
AV *av;
case THRf_ZOMBIE:
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: joining zombie %p\n", t));
ThrSETSTATE(t, THRf_DEAD);
MUTEX_UNLOCK(&t->mutex);
PL_nthreads--;
/*
* The SvREFCNT_dec below may take a long time (e.g. av
* may contain an object scalar whose destructor gets
* called) so we have to unlock threads_mutex and start
* all over again.
*/
MUTEX_UNLOCK(&PL_threads_mutex);
JOIN(t, &av);
SvREFCNT_dec((SV*)av);
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: joined zombie %p OK\n", t));
goto retry_cleanup;
case THRf_R_JOINABLE:
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: detaching thread %p\n", t));
ThrSETSTATE(t, THRf_R_DETACHED);
/*
* We unlock threads_mutex and t->mutex in the opposite order
* from which we locked them just so that DETACH won't
* deadlock if it panics. It's only a breach of good style
* not a bug since they are unlocks not locks.
*/
MUTEX_UNLOCK(&PL_threads_mutex);
DETACH(t);
MUTEX_UNLOCK(&t->mutex);
goto retry_cleanup;
default:
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: ignoring %p (state %u)\n",
t, ThrSTATE(t)));
MUTEX_UNLOCK(&t->mutex);
/* fall through and out */
}
}
/* We leave the above "Pass 1" loop with threads_mutex still locked */
/* Pass 2 on remaining threads: wait for the thread count to drop to one */
while (PL_nthreads > 1)
{
DEBUG_S(PerlIO_printf(Perl_debug_log,
"perl_destruct: final wait for %d threads\n",
PL_nthreads - 1));
COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
}
/* At this point, we're the last thread */
MUTEX_UNLOCK(&PL_threads_mutex);
DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
MUTEX_DESTROY(&PL_threads_mutex);
COND_DESTROY(&PL_nthreads_cond);
PL_nthreads--;
#endif /* !defined(FAKE_THREADS) */
#endif /* USE_THREADS */
destruct_level = PL_perl_destruct_level;
#ifdef DEBUGGING
{
char *s;
if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
int i = atoi(s);
if (destruct_level < i)
destruct_level = i;
}
}
#endif
LEAVE;
FREETMPS;
/* We must account for everything. */
/* Destroy the main CV and syntax tree */
if (PL_main_root) {
PL_curpad = AvARRAY(PL_comppad);
op_free(PL_main_root);
PL_main_root = Nullop;
}
PL_curcop = &PL_compiling;
PL_main_start = Nullop;
SvREFCNT_dec(PL_main_cv);
PL_main_cv = Nullcv;
PL_dirty = TRUE;
if (PL_sv_objcount) {
/*
* Try to destruct global references. We do this first so that the
* destructors and destructees still exist. Some sv's might remain.
* Non-referenced objects are on their own.
*/
sv_clean_objs();
}
/* unhook hooks which will soon be, or use, destroyed data */
SvREFCNT_dec(PL_warnhook);
PL_warnhook = Nullsv;
SvREFCNT_dec(PL_diehook);
PL_diehook = Nullsv;
/* call exit list functions */
while (PL_exitlistlen-- > 0)
PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
Safefree(PL_exitlist);
if (destruct_level == 0){
DEBUG_P(debprofdump());
/* The exit() function will do everything that needs doing. */
return;
}
/* jettison our possibly duplicated environment */
#ifdef USE_ENVIRON_ARRAY
if (environ != PL_origenviron) {
I32 i;
for (i = 0; environ[i]; i++)
safesysfree(environ[i]);
/* Must use safesysfree() when working with environ. */
safesysfree(environ);
environ = PL_origenviron;
}
#endif
/* loosen bonds of global variables */
if(PL_rsfp) {
(void)PerlIO_close(PL_rsfp);
PL_rsfp = Nullfp;
}
/* Filters for program text */
SvREFCNT_dec(PL_rsfp_filters);
PL_rsfp_filters = Nullav;
/* switches */
PL_preprocess = FALSE;
PL_minus_n = FALSE;
PL_minus_p = FALSE;
PL_minus_l = FALSE;
PL_minus_a = FALSE;
PL_minus_F = FALSE;
PL_doswitches = FALSE;
PL_dowarn = G_WARN_OFF;
PL_doextract = FALSE;
PL_sawampersand = FALSE; /* must save all match strings */
PL_unsafe = FALSE;
Safefree(PL_inplace);
PL_inplace = Nullch;
SvREFCNT_dec(PL_patchlevel);
if (PL_e_script) {
SvREFCNT_dec(PL_e_script);
PL_e_script = Nullsv;
}
/* magical thingies */
Safefree(PL_ofs); /* $, */
PL_ofs = Nullch;
Safefree(PL_ors); /* $\ */
PL_ors = Nullch;
SvREFCNT_dec(PL_rs); /* $/ */
PL_rs = Nullsv;
SvREFCNT_dec(PL_nrs); /* $/ helper */
PL_nrs = Nullsv;
PL_multiline = 0; /* $* */
Safefree(PL_osname); /* $^O */
PL_osname = Nullch;
SvREFCNT_dec(PL_statname);
PL_statname = Nullsv;
PL_statgv = Nullgv;
/* defgv, aka *_ should be taken care of elsewhere */
/* clean up after study() */
SvREFCNT_dec(PL_lastscream);
PL_lastscream = Nullsv;
Safefree(PL_screamfirst);
PL_screamfirst = 0;
Safefree(PL_screamnext);
PL_screamnext = 0;
/* float buffer */
Safefree(PL_efloatbuf);
PL_efloatbuf = Nullch;
PL_efloatsize = 0;
/* startup and shutdown function lists */
SvREFCNT_dec(PL_beginav);
SvREFCNT_dec(PL_endav);
SvREFCNT_dec(PL_checkav);
SvREFCNT_dec(PL_initav);
PL_beginav = Nullav;
PL_endav = Nullav;
PL_checkav = Nullav;
PL_initav = Nullav;
/* shortcuts just get cleared */
PL_envgv = Nullgv;
PL_incgv = Nullgv;
PL_hintgv = Nullgv;
PL_errgv = Nullgv;
PL_argvgv = Nullgv;
PL_argvoutgv = Nullgv;
PL_stdingv = Nullgv;
PL_stderrgv = Nullgv;
PL_last_in_gv = Nullgv;
PL_replgv = Nullgv;
PL_debstash = Nullhv;
/* reset so print() ends up where we expect */
setdefout(Nullgv);
SvREFCNT_dec(PL_argvout_stack);
PL_argvout_stack = Nullav;
SvREFCNT_dec(PL_modglobal);
PL_modglobal = Nullhv;
SvREFCNT_dec(PL_preambleav);
PL_preambleav = Nullav;
SvREFCNT_dec(PL_subname);
PL_subname = Nullsv;
SvREFCNT_dec(PL_linestr);
PL_linestr = Nullsv;
SvREFCNT_dec(PL_pidstatus);
PL_pidstatus = Nullhv;
SvREFCNT_dec(PL_toptarget);
PL_toptarget = Nullsv;
SvREFCNT_dec(PL_bodytarget);
PL_bodytarget = Nullsv;
PL_formtarget = Nullsv;
/* free locale stuff */
#ifdef USE_LOCALE_COLLATE
Safefree(PL_collation_name);
PL_collation_name = Nullch;
#endif
#ifdef USE_LOCALE_NUMERIC
Safefree(PL_numeric_name);
PL_numeric_name = Nullch;
SvREFCNT_dec(PL_numeric_radix_sv);
#endif
/* clear utf8 character classes */
SvREFCNT_dec(PL_utf8_alnum);
SvREFCNT_dec(PL_utf8_alnumc);
SvREFCNT_dec(PL_utf8_ascii);
SvREFCNT_dec(PL_utf8_alpha);
SvREFCNT_dec(PL_utf8_space);
SvREFCNT_dec(PL_utf8_cntrl);
SvREFCNT_dec(PL_utf8_graph);
SvREFCNT_dec(PL_utf8_digit);
SvREFCNT_dec(PL_utf8_upper);
SvREFCNT_dec(PL_utf8_lower);
SvREFCNT_dec(PL_utf8_print);
SvREFCNT_dec(PL_utf8_punct);
SvREFCNT_dec(PL_utf8_xdigit);
SvREFCNT_dec(PL_utf8_mark);
SvREFCNT_dec(PL_utf8_toupper);
SvREFCNT_dec(PL_utf8_tolower);
PL_utf8_alnum = Nullsv;
PL_utf8_alnumc = Nullsv;
PL_utf8_ascii = Nullsv;
PL_utf8_alpha = Nullsv;
PL_utf8_space = Nullsv;
PL_utf8_cntrl = Nullsv;
PL_utf8_graph = Nullsv;
PL_utf8_digit = Nullsv;
PL_utf8_upper = Nullsv;
PL_utf8_lower = Nullsv;
PL_utf8_print = Nullsv;
PL_utf8_punct = Nullsv;
PL_utf8_xdigit = Nullsv;
PL_utf8_mark = Nullsv;
PL_utf8_toupper = Nullsv;
PL_utf8_totitle = Nullsv;
PL_utf8_tolower = Nullsv;
if (!specialWARN(PL_compiling.cop_warnings))
SvREFCNT_dec(PL_compiling.cop_warnings);
PL_compiling.cop_warnings = Nullsv;
#ifdef USE_ITHREADS
Safefree(CopFILE(&PL_compiling));
CopFILE(&PL_compiling) = Nullch;
Safefree(CopSTASHPV(&PL_compiling));
#else
SvREFCNT_dec(CopFILEGV(&PL_compiling));
CopFILEGV(&PL_compiling) = Nullgv;
/* cop_stash is not refcounted */
#endif
/* Prepare to destruct main symbol table. */
hv = PL_defstash;
PL_defstash = 0;
SvREFCNT_dec(hv);
SvREFCNT_dec(PL_curstname);
PL_curstname = Nullsv;
/* clear queued errors */
SvREFCNT_dec(PL_errors);
PL_errors = Nullsv;
FREETMPS;
if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
if (PL_scopestack_ix != 0)
Perl_warner(aTHX_ WARN_INTERNAL,
"Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
(long)PL_scopestack_ix);
if (PL_savestack_ix != 0)
Perl_warner(aTHX_ WARN_INTERNAL,
"Unbalanced saves: %ld more saves than restores\n",
(long)PL_savestack_ix);
if (PL_tmps_floor != -1)
Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
(long)PL_tmps_floor + 1);
if (cxstack_ix != -1)
Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
(long)cxstack_ix + 1);
}
/* Now absolutely destruct everything, somehow or other, loops or no. */
SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
/* the 2 is for PL_fdpid and PL_strtab */
while (PL_sv_count > 2 && sv_clean_all())
;
SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
SvFLAGS(PL_fdpid) |= SVt_PVAV;
SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
SvFLAGS(PL_strtab) |= SVt_PVHV;
AvREAL_off(PL_fdpid); /* no surviving entries */
SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
PL_fdpid = Nullav;
#ifdef HAVE_INTERP_INTERN
sys_intern_clear();
#endif
/* Destruct the global string table. */
{
/* Yell and reset the HeVAL() slots that are still holding refcounts,
* so that sv_free() won't fail on them.
*/
I32 riter;
I32 max;
HE *hent;
HE **array;
riter = 0;
max = HvMAX(PL_strtab);
array = HvARRAY(PL_strtab);
hent = array[0];
for (;;) {
if (hent && ckWARN_d(WARN_INTERNAL)) {
Perl_warner(aTHX_ WARN_INTERNAL,
"Unbalanced string table refcount: (%d) for \"%s\"",
HeVAL(hent) - Nullsv, HeKEY(hent));
HeVAL(hent) = Nullsv;
hent = HeNEXT(hent);
}
if (!hent) {
if (++riter > max)
break;
hent = array[riter];
}
}
}
SvREFCNT_dec(PL_strtab);
#ifdef USE_ITHREADS
/* free the pointer table used for cloning */
ptr_table_free(PL_ptr_table);
#endif
/* free special SVs */
SvREFCNT(&PL_sv_yes) = 0;
sv_clear(&PL_sv_yes);
SvANY(&PL_sv_yes) = NULL;
SvFLAGS(&PL_sv_yes) = 0;
SvREFCNT(&PL_sv_no) = 0;
sv_clear(&PL_sv_no);
SvANY(&PL_sv_no) = NULL;
SvFLAGS(&PL_sv_no) = 0;
SvREFCNT(&PL_sv_undef) = 0;
SvREADONLY_off(&PL_sv_undef);
if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
Safefree(PL_origfilename);
Safefree(PL_reg_start_tmp);
if (PL_reg_curpm)
Safefree(PL_reg_curpm);
Safefree(PL_reg_poscache);
Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
Safefree(PL_op_mask);
Safefree(PL_psig_ptr);
Safefree(PL_psig_name);
Safefree(PL_bitcount);
nuke_stacks();
PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
DEBUG_P(debprofdump());
#ifdef USE_THREADS
MUTEX_DESTROY(&PL_strtab_mutex);
MUTEX_DESTROY(&PL_sv_mutex);
MUTEX_DESTROY(&PL_eval_mutex);
MUTEX_DESTROY(&PL_cred_mutex);
MUTEX_DESTROY(&PL_fdpid_mutex);
COND_DESTROY(&PL_eval_cond);
#ifdef EMULATE_ATOMIC_REFCOUNTS
MUTEX_DESTROY(&PL_svref_mutex);
#endif /* EMULATE_ATOMIC_REFCOUNTS */
/* As the penultimate thing, free the non-arena SV for thrsv */
Safefree(SvPVX(PL_thrsv));
Safefree(SvANY(PL_thrsv));
Safefree(PL_thrsv);
PL_thrsv = Nullsv;
#endif /* USE_THREADS */
sv_free_arenas();
/* As the absolutely last thing, free the non-arena SV for mess() */
if (PL_mess_sv) {
/* it could have accumulated taint magic */
if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
MAGIC* mg;
MAGIC* moremagic;
for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
moremagic = mg->mg_moremagic;
if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
Safefree(mg->mg_ptr);
Safefree(mg);
}
}
/* we know that type >= SVt_PV */
(void)SvOOK_off(PL_mess_sv);
Safefree(SvPVX(PL_mess_sv));
Safefree(SvANY(PL_mess_sv));
Safefree(PL_mess_sv);
PL_mess_sv = Nullsv;
}
}
/*
=for apidoc perl_free
Releases a Perl interpreter. See L<perlembed>.
=cut
*/
void
perl_free(pTHXx)
{
#if defined(PERL_OBJECT)
PerlMem_free(this);
#else
# if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
void *host = w32_internal_host;
PerlMem_free(aTHXx);
win32_delete_internal_host(host);
# else
PerlMem_free(aTHXx);
# endif
#endif
}
void
Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
{
Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
PL_exitlist[PL_exitlistlen].fn = fn;
PL_exitlist[PL_exitlistlen].ptr = ptr;
++PL_exitlistlen;
}
/*
=for apidoc perl_parse
Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
=cut
*/
int
perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
{
I32 oldscope;
int ret;
dJMPENV;
#ifdef USE_THREADS
dTHX;
#endif
#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
#ifdef IAMSUID
#undef IAMSUID
Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
setuid perl scripts securely.\n");
#endif
#endif
#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
_dyld_lookup_and_bind
("__environ", (unsigned long *) &environ_pointer, NULL);
#endif /* environ */
PL_origargv = argv;
PL_origargc = argc;
#ifdef USE_ENVIRON_ARRAY
PL_origenviron = environ;
#endif
if (PL_do_undump) {
/* Come here if running an undumped a.out. */
PL_origfilename = savepv(argv[0]);
PL_do_undump = FALSE;
cxstack_ix = -1; /* start label stack again */
init_ids();
init_postdump_symbols(argc,argv,env);
return 0;
}
if (PL_main_root) {
PL_curpad = AvARRAY(PL_comppad);
op_free(PL_main_root);
PL_main_root = Nullop;
}
PL_main_start = Nullop;
SvREFCNT_dec(PL_main_cv);
PL_main_cv = Nullcv;
time(&PL_basetime);
oldscope = PL_scopestack_ix;
PL_dowarn = G_WARN_OFF;
#ifdef PERL_FLEXIBLE_EXCEPTIONS
CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
#else
JMPENV_PUSH(ret);
#endif
switch (ret) {
case 0:
#ifndef PERL_FLEXIBLE_EXCEPTIONS
parse_body(env,xsinit);
#endif
if (PL_checkav)
call_list(oldscope, PL_checkav);
ret = 0;
break;
case 1:
STATUS_ALL_FAILURE;
/* FALL THROUGH */
case 2:
/* my_exit() was called */
while (PL_scopestack_ix > oldscope)
LEAVE;
FREETMPS;
PL_curstash = PL_defstash;
if (PL_checkav)
call_list(oldscope, PL_checkav);
ret = STATUS_NATIVE_EXPORT;
break;
case 3:
PerlIO_printf(Perl_error_log, "panic: top_env\n");
ret = 1;
break;
}
JMPENV_POP;
return ret;
}
#ifdef PERL_FLEXIBLE_EXCEPTIONS
STATIC void *
S_vparse_body(pTHX_ va_list args)
{
char **env = va_arg(args, char**);
XSINIT_t xsinit = va_arg(args, XSINIT_t);
return parse_body(env, xsinit);
}
#endif
STATIC void *
S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
{
int argc = PL_origargc;
char **argv = PL_origargv;
char *scriptname = NULL;
int fdscript = -1;
VOL bool dosearch = FALSE;
char *validarg = "";
AV* comppadlist;
register SV *sv;
register char *s;
char *cddir = Nullch;
sv_setpvn(PL_linestr,"",0);
sv = newSVpvn("",0); /* first used for -I flags */
SAVEFREESV(sv);
init_main_stash();
for (argc--,argv++; argc > 0; argc--,argv++) {
if (argv[0][0] != '-' || !argv[0][1])
break;
#ifdef DOSUID
if (*validarg)
validarg = " PHOOEY ";
else
validarg = argv[0];
#endif
s = argv[0]+1;
reswitch:
switch (*s) {
case 'C':
#ifdef WIN32
win32_argv2utf8(argc-1, argv+1);
/* FALL THROUGH */
#endif
#ifndef PERL_STRICT_CR
case '\r':
#endif
case ' ':
case '0':
case 'F':
case 'a':
case 'c':
case 'd':
case 'D':
case 'h':
case 'i':
case 'l':
case 'M':
case 'm':
case 'n':
case 'p':
case 's':
case 'u':
case 'U':
case 'v':
case 'W':
case 'X':
case 'w':
if ((s = moreswitches(s)))
goto reswitch;
break;
case 'T':
PL_tainting = TRUE;
s++;
goto reswitch;
case 'e':
#ifdef MACOS_TRADITIONAL
/* ignore -e for Dev:Pseudo argument */
if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
break;
#endif
if (PL_euid != PL_uid || PL_egid != PL_gid)
Perl_croak(aTHX_ "No -e allowed in setuid scripts");
if (!PL_e_script) {
PL_e_script = newSVpvn("",0);
filter_add(read_e_script, NULL);
}
if (*++s)
sv_catpv(PL_e_script, s);
else if (argv[1]) {
sv_catpv(PL_e_script, argv[1]);
argc--,argv++;
}
else
Perl_croak(aTHX_ "No code specified for -e");
sv_catpv(PL_e_script, "\n");
break;
case 'I': /* -I handled both here and in moreswitches() */
forbid_setid("-I");
if (!*++s && (s=argv[1]) != Nullch) {
argc--,argv++;
}
if (s && *s) {
char *p;
STRLEN len = strlen(s);
p = savepvn(s, len);
incpush(p, TRUE, TRUE);
sv_catpvn(sv, "-I", 2);
sv_catpvn(sv, p, len);
sv_catpvn(sv, " ", 1);
Safefree(p);
}
else
Perl_croak(aTHX_ "No directory specified for -I");
break;
case 'P':
forbid_setid("-P");
PL_preprocess = TRUE;
s++;
goto reswitch;
case 'S':
forbid_setid("-S");
dosearch = TRUE;
s++;
goto reswitch;
case 'V':
if (!PL_preambleav)
PL_preambleav = newAV();
av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
if (*++s != ':') {
PL_Sv = newSVpv("print myconfig();",0);
#ifdef VMS
sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
#else
sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
#endif
sv_catpv(PL_Sv,"\" Compile-time options:");
# ifdef DEBUGGING
sv_catpv(PL_Sv," DEBUGGING");
# endif
# ifdef MULTIPLICITY
sv_catpv(PL_Sv," MULTIPLICITY");
# endif
# ifdef USE_THREADS
sv_catpv(PL_Sv," USE_THREADS");
# endif
# ifdef USE_ITHREADS
sv_catpv(PL_Sv," USE_ITHREADS");
# endif
# ifdef USE_64_BIT_INT
sv_catpv(PL_Sv," USE_64_BIT_INT");
# endif
# ifdef USE_64_BIT_ALL
sv_catpv(PL_Sv," USE_64_BIT_ALL");
# endif
# ifdef USE_LONG_DOUBLE
sv_catpv(PL_Sv," USE_LONG_DOUBLE");
# endif
# ifdef USE_LARGE_FILES
sv_catpv(PL_Sv," USE_LARGE_FILES");
# endif
# ifdef USE_SOCKS
sv_catpv(PL_Sv," USE_SOCKS");
# endif
# ifdef PERL_OBJECT
sv_catpv(PL_Sv," PERL_OBJECT");
# endif
# ifdef PERL_IMPLICIT_CONTEXT
sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
# endif
# ifdef PERL_IMPLICIT_SYS
sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
# endif
sv_catpv(PL_Sv,"\\n\",");
#if defined(LOCAL_PATCH_COUNT)
if (LOCAL_PATCH_COUNT > 0) {
int i;
sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
if (PL_localpatches[i])
Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
}
}
#endif
Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
#ifdef __DATE__
# ifdef __TIME__
Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
# else
Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
# endif
#endif
sv_catpv(PL_Sv, "; \
$\"=\"\\n \"; \
@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
print \" \\%ENV:\\n @env\\n\" if @env; \
print \" \\@INC:\\n @INC\\n\";");
}
else {
PL_Sv = newSVpv("config_vars(qw(",0);
sv_catpv(PL_Sv, ++s);
sv_catpv(PL_Sv, "))");
s += strlen(s);
}
av_push(PL_preambleav, PL_Sv);
scriptname = BIT_BUCKET; /* don't look for script or read stdin */
goto reswitch;
case 'x':
PL_doextract = TRUE;
s++;
if (*s)
cddir = s;
break;
case 0:
break;
case '-':
if (!*++s || isSPACE(*s)) {
argc--,argv++;
goto switch_end;
}
/* catch use of gnu style long options */
if (strEQ(s, "version")) {
s = "v";
goto reswitch;
}
if (strEQ(s, "help")) {
s = "h";
goto reswitch;
}
s--;
/* FALL THROUGH */
default:
Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
}
}
switch_end:
if (
#ifndef SECURE_INTERNAL_GETENV
!PL_tainting &&
#endif
(s = PerlEnv_getenv("PERL5OPT")))
{
while (isSPACE(*s))
s++;
if (*s == '-' && *(s+1) == 'T')
PL_tainting = TRUE;
else {
while (s && *s) {
char *d;
while (isSPACE(*s))
s++;
if (*s == '-') {
s++;
if (isSPACE(*s))
continue;
}
d = s;
if (!*s)
break;
if (!strchr("DIMUdmw", *s))
Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
while (++s && *s) {
if (isSPACE(*s)) {
*s++ = '\0';
break;
}
}
moreswitches(d);
}
}
}
if (!scriptname)
scriptname = argv[0];
if (PL_e_script) {
argc++,argv--;
scriptname = BIT_BUCKET; /* don't look for script or read stdin */
}
else if (scriptname == Nullch) {
#ifdef MSDOS
if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
moreswitches("h");
#endif
scriptname = "-";
}
init_perllib();
open_script(scriptname,dosearch,sv,&fdscript);
validate_suid(validarg, scriptname,fdscript);
#if defined(SIGCHLD) || defined(SIGCLD)
{
#ifndef SIGCHLD
# define SIGCHLD SIGCLD
#endif
Sighandler_t sigstate = rsignal_state(SIGCHLD);
if (sigstate == SIG_IGN) {
if (ckWARN(WARN_SIGNAL))
Perl_warner(aTHX_ WARN_SIGNAL,
"Can't ignore signal CHLD, forcing to default");
(void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
}
}
#endif
#ifdef MACOS_TRADITIONAL
if (PL_doextract || gMacPerl_AlwaysExtract) {
#else
if (PL_doextract) {
#endif
find_beginning();
if (cddir && PerlDir_chdir(cddir) < 0)
Perl_croak(aTHX_ "Can't chdir to %s",cddir);
}
PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
sv_upgrade((SV *)PL_compcv, SVt_PVCV);
CvUNIQUE_on(PL_compcv);
PL_comppad = newAV();
av_push(PL_comppad, Nullsv);
PL_curpad = AvARRAY(PL_comppad);
PL_comppad_name = newAV();
PL_comppad_name_fill = 0;
PL_min_intro_pending = 0;
PL_padix = 0;
#ifdef USE_THREADS
av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
PL_curpad[0] = (SV*)newAV();
SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
CvOWNER(PL_compcv) = 0;
New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
MUTEX_INIT(CvMUTEXP(PL_compcv));
#endif /* USE_THREADS */
comppadlist = newAV();
AvREAL_off(comppadlist);
av_store(comppadlist, 0, (SV*)PL_comppad_name);
av_store(comppadlist, 1, (SV*)PL_comppad);
CvPADLIST(PL_compcv) = comppadlist;
boot_core_UNIVERSAL();
#ifndef PERL_MICRO
boot_core_xsutils();
#endif
if (xsinit)
(*xsinit)(aTHXo); /* in case linked C routines want magical variables */
#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
init_os_extras();
#endif
#ifdef USE_SOCKS
# ifdef HAS_SOCKS5_INIT
socks5_init(argv[0]);
# else
SOCKSinit(argv[0]);
# endif
#endif
init_predump_symbols();
/* init_postdump_symbols not currently designed to be called */
/* more than once (ENV isn't cleared first, for example) */
/* But running with -u leaves %ENV & @ARGV undefined! XXX */
if (!PL_do_undump)
init_postdump_symbols(argc,argv,env);
init_lexer();
/* now parse the script */
SETERRNO(0,SS$_NORMAL);
PL_error_count = 0;
#ifdef MACOS_TRADITIONAL
if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
if (PL_minus_c)
Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
else {
Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
MacPerl_MPWFileName(PL_origfilename));
}
}
#else
if (yyparse() || PL_error_count) {
if (PL_minus_c)
Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
else {
Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
PL_origfilename);
}
}
#endif
CopLINE_set(PL_curcop, 0);
PL_curstash = PL_defstash;
PL_preprocess = FALSE;
if (PL_e_script) {
SvREFCNT_dec(PL_e_script);
PL_e_script = Nullsv;
}
/* now that script is parsed, we can modify record separator */
SvREFCNT_dec(PL_rs);
PL_rs = SvREFCNT_inc(PL_nrs);
sv_setsv(get_sv("/", TRUE), PL_rs);
if (PL_do_undump)
my_unexec();
if (isWARN_ONCE) {
SAVECOPFILE(PL_curcop);
SAVECOPLINE(PL_curcop);
gv_check(PL_defstash);
}
LEAVE;
FREETMPS;
#ifdef MYMALLOC
if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
dump_mstats("after compilation:");
#endif
ENTER;
PL_restartop = 0;
return NULL;
}
/*
=for apidoc perl_run
Tells a Perl interpreter to run. See L<perlembed>.
=cut
*/
int
perl_run(pTHXx)
{
I32 oldscope;
int ret = 0;
dJMPENV;
#ifdef USE_THREADS
dTHX;
#endif
oldscope = PL_scopestack_ix;
#ifdef PERL_FLEXIBLE_EXCEPTIONS
redo_body:
CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
#else
JMPENV_PUSH(ret);
#endif
switch (ret) {
case 1:
cxstack_ix = -1; /* start context stack again */
goto redo_body;
case 0: /* normal completion */
#ifndef PERL_FLEXIBLE_EXCEPTIONS
redo_body:
run_body(oldscope);
#endif
/* FALL THROUGH */
case 2: /* my_exit() */
while (PL_scopestack_ix > oldscope)
LEAVE;
FREETMPS;
PL_curstash = PL_defstash;
if (PL_endav && !PL_minus_c)
call_list(oldscope, PL_endav);
#ifdef MYMALLOC
if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
dump_mstats("after execution: ");
#endif
ret = STATUS_NATIVE_EXPORT;
break;
case 3:
if (PL_restartop) {
POPSTACK_TO(PL_mainstack);
goto redo_body;
}
PerlIO_printf(Perl_error_log, "panic: restartop\n");
FREETMPS;
ret = 1;
break;
}
JMPENV_POP;
return ret;
}
#ifdef PERL_FLEXIBLE_EXCEPTIONS
STATIC void *
S_vrun_body(pTHX_ va_list args)
{
I32 oldscope = va_arg(args, I32);
return run_body(oldscope);
}
#endif
STATIC void *
S_run_body(pTHX_ I32 oldscope)
{
DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
PL_sawampersand ? "Enabling" : "Omitting"));
if (!PL_restartop) {
DEBUG_x(dump_all());
DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
PTR2UV(thr)));
if (PL_minus_c) {
#ifdef MACOS_TRADITIONAL
PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
#else
PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
#endif
my_exit(0);
}
if (PERLDB_SINGLE && PL_DBsingle)
sv_setiv(PL_DBsingle, 1);
if (PL_initav)
call_list(oldscope, PL_initav);
}
/* do it */
if (PL_restartop) {
PL_op = PL_restartop;
PL_restartop = 0;
CALLRUNOPS(aTHX);
}
else if (PL_main_start) {
CvDEPTH(PL_main_cv) = 1;
PL_op = PL_main_start;
CALLRUNOPS(aTHX);
}
my_exit(0);
/* NOTREACHED */
return NULL;
}
/*
=for apidoc p||get_sv
Returns the SV of the specified Perl scalar. If C<create> is set and the
Perl variable does not exist then it will be created. If C<create> is not
set and the variable does not exist then NULL is returned.
=cut
*/
SV*
Perl_get_sv(pTHX_ const char *name, I32 create)
{
GV *gv;
#ifdef USE_THREADS
if (name[1] == '\0' && !isALPHA(name[0])) {
PADOFFSET tmp = find_threadsv(name);
if (tmp != NOT_IN_PAD)
return THREADSV(tmp);
}
#endif /* USE_THREADS */
gv = gv_fetchpv(name, create, SVt_PV);
if (gv)
return GvSV(gv);
return Nullsv;
}
/*
=for apidoc p||get_av
Returns the AV of the specified Perl array. If C<create> is set and the
Perl variable does not exist then it will be created. If C<create> is not
set and the variable does not exist then NULL is returned.
=cut
*/
AV*
Perl_get_av(pTHX_ const char *name, I32 create)
{
GV* gv = gv_fetchpv(name, create, SVt_PVAV);
if (create)
return GvAVn(gv);
if (gv)
return GvAV(gv);
return Nullav;
}
/*
=for apidoc p||get_hv
Returns the HV of the specified Perl hash. If C<create> is set and the
Perl variable does not exist then it will be created. If C<create> is not
set and the variable does not exist then NULL is returned.
=cut
*/
HV*
Perl_get_hv(pTHX_ const char *name, I32 create)
{
GV* gv = gv_fetchpv(name, create, SVt_PVHV);
if (create)
return GvHVn(gv);
if (gv)
return GvHV(gv);
return Nullhv;
}
/*
=for apidoc p||get_cv
Returns the CV of the specified Perl subroutine. If C<create> is set and
the Perl subroutine does not exist then it will be declared (which has the
same effect as saying C<sub name;>). If C<create> is not set and the
subroutine does not exist then NULL is returned.
=cut
*/
CV*
Perl_get_cv(pTHX_ const char *name, I32 create)
{
GV* gv = gv_fetchpv(name, create, SVt_PVCV);
/* XXX unsafe for threads if eval_owner isn't held */
/* XXX this is probably not what they think they're getting.
* It has the same effect as "sub name;", i.e. just a forward
* declaration! */
if (create && !GvCVu(gv))
return newSUB(start_subparse(FALSE, 0),
newSVOP(OP_CONST, 0, newSVpv(name,0)),
Nullop,
Nullop);
if (gv)
return GvCVu(gv);
return Nullcv;
}
/* Be sure to refetch the stack pointer after calling these routines. */
/*
=for apidoc p||call_argv
Performs a callback to the specified Perl sub. See L<perlcall>.
=cut
*/
I32
Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
/* See G_* flags in cop.h */
/* null terminated arg list */
{
dSP;
PUSHMARK(SP);
if (argv) {
while (*argv) {
XPUSHs(sv_2mortal(newSVpv(*argv,0)));
argv++;
}
PUTBACK;
}
return call_pv(sub_name, flags);
}
/*
=for apidoc p||call_pv
Performs a callback to the specified Perl sub. See L<perlcall>.
=cut
*/
I32
Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
/* name of the subroutine */
/* See G_* flags in cop.h */
{
return call_sv((SV*)get_cv(sub_name, TRUE), flags);
}
/*
=for apidoc p||call_method
Performs a callback to the specified Perl method. The blessed object must
be on the stack. See L<perlcall>.
=cut
*/
I32
Perl_call_method(pTHX_ const char *methname, I32 flags)
/* name of the subroutine */
/* See G_* flags in cop.h */
{
return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
}
/* May be called with any of a CV, a GV, or an SV containing the name. */
/*
=for apidoc p||call_sv
Performs a callback to the Perl sub whose name is in the SV. See
L<perlcall>.
=cut
*/
I32
Perl_call_sv(pTHX_ SV *sv, I32 flags)
/* See G_* flags in cop.h */
{
dSP;
LOGOP myop; /* fake syntax tree node */
UNOP method_op;
I32 oldmark;
I32 retval;
I32 oldscope;
bool oldcatch = CATCH_GET;
int ret;
OP* oldop = PL_op;
dJMPENV;
if (flags & G_DISCARD) {
ENTER;
SAVETMPS;
}
Zero(&myop, 1, LOGOP);
myop.op_next = Nullop;
if (!(flags & G_NOARGS))
myop.op_flags |= OPf_STACKED;
myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
(flags & G_ARRAY) ? OPf_WANT_LIST :
OPf_WANT_SCALAR);
SAVEOP();
PL_op = (OP*)&myop;
EXTEND(PL_stack_sp, 1);
*++PL_stack_sp = sv;
oldmark = TOPMARK;
oldscope = PL_scopestack_ix;
if (PERLDB_SUB && PL_curstash != PL_debstash
/* Handle first BEGIN of -d. */
&& (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
/* Try harder, since this may have been a sighandler, thus
* curstash may be meaningless. */
&& (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
&& !(flags & G_NODEBUG))
PL_op->op_private |= OPpENTERSUB_DB;
if (flags & G_METHOD) {
Zero(&method_op, 1, UNOP);
method_op.op_next = PL_op;
method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
PL_op = (OP*)&method_op;
}
if (!(flags & G_EVAL)) {
CATCH_SET(TRUE);
call_body((OP*)&myop, FALSE);
retval = PL_stack_sp - (PL_stack_base + oldmark);
CATCH_SET(oldcatch);
}
else {
myop.op_other = (OP*)&myop;
PL_markstack_ptr--;
/* we're trying to emulate pp_entertry() here */
{
register PERL_CONTEXT *cx;
I32 gimme = GIMME_V;
ENTER;
SAVETMPS;
push_return(Nullop);
PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
PUSHEVAL(cx, 0, 0);
PL_eval_root = PL_op; /* Only needed so that goto works right. */
PL_in_eval = EVAL_INEVAL;
if (flags & G_KEEPERR)
PL_in_eval |= EVAL_KEEPERR;
else
sv_setpv(ERRSV,"");
}
PL_markstack_ptr++;
#ifdef PERL_FLEXIBLE_EXCEPTIONS
redo_body:
CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
(OP*)&myop, FALSE);
#else
JMPENV_PUSH(ret);
#endif
switch (ret) {
case 0:
#ifndef PERL_FLEXIBLE_EXCEPTIONS
redo_body:
call_body((OP*)&myop, FALSE);
#endif
retval = PL_stack_sp - (PL_stack_base + oldmark);
if (!(flags & G_KEEPERR))
sv_setpv(ERRSV,"");
break;
case 1:
STATUS_ALL_FAILURE;
/* FALL THROUGH */
case 2:
/* my_exit() was called */
PL_curstash = PL_defstash;
FREETMPS;
JMPENV_POP;
if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
Perl_croak(aTHX_ "Callback called exit");
my_exit_jump();
/* NOTREACHED */
case 3:
if (PL_restartop) {
PL_op = PL_restartop;
PL_restartop = 0;
goto redo_body;
}
PL_stack_sp = PL_stack_base + oldmark;
if (flags & G_ARRAY)
retval = 0;
else {
retval = 1;
*++PL_stack_sp = &PL_sv_undef;
}
break;
}
if (PL_scopestack_ix > oldscope) {
SV **newsp;
PMOP *newpm;
I32 gimme;
register PERL_CONTEXT *cx;
I32 optype;
POPBLOCK(cx,newpm);
POPEVAL(cx);
pop_return();
PL_curpm = newpm;
LEAVE;
}
JMPENV_POP;
}
if (flags & G_DISCARD) {
PL_stack_sp = PL_stack_base + oldmark;
retval = 0;
FREETMPS;
LEAVE;
}
PL_op = oldop;
return retval;
}
#ifdef PERL_FLEXIBLE_EXCEPTIONS
STATIC void *
S_vcall_body(pTHX_ va_list args)
{
OP *myop = va_arg(args, OP*);
int is_eval = va_arg(args, int);
call_body(myop, is_eval);
return NULL;
}
#endif
STATIC void
S_call_body(pTHX_ OP *myop, int is_eval)
{
if (PL_op == myop) {
if (is_eval)
PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
else
PL_op = Perl_pp_entersub(aTHX); /* this does */
}
if (PL_op)
CALLRUNOPS(aTHX);
}
/* Eval a string. The G_EVAL flag is always assumed. */
/*
=for apidoc p||eval_sv
Tells Perl to C<eval> the string in the SV.
=cut
*/
I32
Perl_eval_sv(pTHX_ SV *sv, I32 flags)
/* See G_* flags in cop.h */
{
dSP;
UNOP myop; /* fake syntax tree node */
I32 oldmark = SP - PL_stack_base;
I32 retval;
I32 oldscope;
int ret;
OP* oldop = PL_op;
dJMPENV;
if (flags & G_DISCARD) {
ENTER;
SAVETMPS;
}
SAVEOP();
PL_op = (OP*)&myop;
Zero(PL_op, 1, UNOP);
EXTEND(PL_stack_sp, 1);
*++PL_stack_sp = sv;
oldscope = PL_scopestack_ix;
if (!(flags & G_NOARGS))
myop.op_flags = OPf_STACKED;
myop.op_next = Nullop;
myop.op_type = OP_ENTEREVAL;
myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
(flags & G_ARRAY) ? OPf_WANT_LIST :
OPf_WANT_SCALAR);
if (flags & G_KEEPERR)
myop.op_flags |= OPf_SPECIAL;
#ifdef PERL_FLEXIBLE_EXCEPTIONS
redo_body:
CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
(OP*)&myop, TRUE);
#else
JMPENV_PUSH(ret);
#endif
switch (ret) {
case 0:
#ifndef PERL_FLEXIBLE_EXCEPTIONS
redo_body:
call_body((OP*)&myop,TRUE);
#endif
retval = PL_stack_sp - (PL_stack_base + oldmark);
if (!(flags & G_KEEPERR))
sv_setpv(ERRSV,"");
break;
case 1:
STATUS_ALL_FAILURE;
/* FALL THROUGH */
case 2:
/* my_exit() was called */
PL_curstash = PL_defstash;
FREETMPS;
JMPENV_POP;
if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
Perl_croak(aTHX_ "Callback called exit");
my_exit_jump();
/* NOTREACHED */
case 3:
if (PL_restartop) {
PL_op = PL_restartop;
PL_restartop = 0;
goto redo_body;
}
PL_stack_sp = PL_stack_base + oldmark;
if (flags & G_ARRAY)
retval = 0;
else {
retval = 1;
*++PL_stack_sp = &PL_sv_undef;
}
break;
}
JMPENV_POP;
if (flags & G_DISCARD) {
PL_stack_sp = PL_stack_base + oldmark;
retval = 0;
FREETMPS;
LEAVE;
}
PL_op = oldop;
return retval;
}
/*
=for apidoc p||eval_pv
Tells Perl to C<eval> the given string and return an SV* result.
=cut
*/
SV*
Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
{
dSP;
SV* sv = newSVpv(p, 0);
eval_sv(sv, G_SCALAR);
SvREFCNT_dec(sv);
SPAGAIN;
sv = POPs;
PUTBACK;
if (croak_on_error && SvTRUE(ERRSV)) {
STRLEN n_a;
Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
}
return sv;
}
/* Require a module. */
/*
=for apidoc p||require_pv
Tells Perl to C<require> a module.
=cut
*/
void
Perl_require_pv(pTHX_ const char *pv)
{
SV* sv;
dSP;
PUSHSTACKi(PERLSI_REQUIRE);
PUTBACK;
sv = sv_newmortal();
sv_setpv(sv, "require '");
sv_catpv(sv, pv);
sv_catpv(sv, "'");
eval_sv(sv, G_DISCARD);
SPAGAIN;
POPSTACK;
}
void
Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
{
register GV *gv;
if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
}
STATIC void
S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
{
/* This message really ought to be max 23 lines.
* Removed -h because the user already knows that opton. Others? */
static char *usage_msg[] = {
"-0[octal] specify record separator (\\0, if no argument)",
"-a autosplit mode with -n or -p (splits $_ into @F)",
"-C enable native wide character system interfaces",
"-c check syntax only (runs BEGIN and CHECK blocks)",
"-d[:debugger] run program under debugger",
"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
"-e 'command' one line of program (several -e's allowed, omit programfile)",
"-F/pattern/ split() pattern for -a switch (//'s are optional)",
"-i[extension] edit <> files in place (makes backup if extension supplied)",
"-Idirectory specify @INC/#include directory (several -I's allowed)",
"-l[octal] enable line ending processing, specifies line terminator",
"-[mM][-]module execute `use/no module...' before executing program",
"-n assume 'while (<>) { ... }' loop around program",
"-p assume loop like -n but print line also, like sed",
"-P run program through C preprocessor before compilation",
"-s enable rudimentary parsing for switches after programfile",
"-S look for programfile using PATH environment variable",
"-T enable tainting checks",
"-u dump core after parsing program",
"-U allow unsafe operations",
"-v print version, subversion (includes VERY IMPORTANT perl info)",
"-V[:variable] print configuration summary (or a single Config.pm variable)",
"-w enable many useful warnings (RECOMMENDED)",
"-W enable all warnings",
"-X disable all warnings",
"-x[directory] strip off text before #!perl line and perhaps cd to directory",
"\n",
NULL
};
char **p = usage_msg;
PerlIO_printf(PerlIO_stdout(),
"\nUsage: %s [switches] [--] [programfile] [arguments]",
name);
while (*p)
PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
}
/* This routine handles any switches that can be given during run */
char *
Perl_moreswitches(pTHX_ char *s)
{
STRLEN numlen;
U32 rschar;
switch (*s) {
case '0':
{
numlen = 0; /* disallow underscores */
rschar = (U32)scan_oct(s, 4, &numlen);
SvREFCNT_dec(PL_nrs);
if (rschar & ~((U8)~0))
PL_nrs = &PL_sv_undef;
else if (!rschar && numlen >= 2)
PL_nrs = newSVpvn("", 0);
else {
char ch = rschar;
PL_nrs = newSVpvn(&ch, 1);
}
return s + numlen;
}
case 'C':
PL_widesyscalls = TRUE;
s++;
return s;
case 'F':
PL_minus_F = TRUE;
PL_splitstr = savepv(s + 1);
s += strlen(s);
return s;
case 'a':
PL_minus_a = TRUE;
s++;
return s;
case 'c':
PL_minus_c = TRUE;
s++;
return s;
case 'd':
forbid_setid("-d");
s++;
/* The following permits -d:Mod to accepts arguments following an =
in the fashion that -MSome::Mod does. */
if (*s == ':' || *s == '=') {
char *start;
SV *sv;
sv = newSVpv("use Devel::", 0);
start = ++s;
/* We now allow -d:Module=Foo,Bar */
while(isALNUM(*s) || *s==':') ++s;
if (*s != '=')
sv_catpv(sv, start);
else {
sv_catpvn(sv, start, s-start);
sv_catpv(sv, " split(/,/,q{");
sv_catpv(sv, ++s);
sv_catpv(sv, "})");
}
s += strlen(s);
my_setenv("PERL5DB", SvPV(sv, PL_na));
}
if (!PL_perldb) {
PL_perldb = PERLDB_ALL;
init_debugger();
}
return s;
case 'D':
{
#ifdef DEBUGGING
forbid_setid("-D");
if (isALPHA(s[1])) {
static char debopts[] = "psltocPmfrxuLHXDST";
char *d;
for (s++; *s && (d = strchr(debopts,*s)); s++)
PL_debug |= 1 << (d - debopts);
}
else {
PL_debug = atoi(s+1);
for (s++; isDIGIT(*s); s++) ;
}
PL_debug |= 0x80000000;
#else
if (ckWARN_d(WARN_DEBUGGING))
Perl_warner(aTHX_ WARN_DEBUGGING,
"Recompile perl with -DDEBUGGING to use -D switch\n");
for (s++; isALNUM(*s); s++) ;
#endif
/*SUPPRESS 530*/
return s;
}
case 'h':
usage(PL_origargv[0]);
PerlProc_exit(0);
case 'i':
if (PL_inplace)
Safefree(PL_inplace);
PL_inplace = savepv(s+1);
/*SUPPRESS 530*/
for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
if (*s) {
*s++ = '\0';
if (*s == '-') /* Additional switches on #! line. */
s++;
}
return s;
case 'I': /* -I handled both here and in parse_perl() */
forbid_setid("-I");
++s;
while (*s && isSPACE(*s))
++s;
if (*s) {
char *e, *p;
p = s;
/* ignore trailing spaces (possibly followed by other switches) */
do {
for (e = p; *e && !isSPACE(*e); e++) ;
p = e;
while (isSPACE(*p))
p++;
} while (*p && *p != '-');
e = savepvn(s, e-s);
incpush(e, TRUE, TRUE);
Safefree(e);
s = p;
if (*s == '-')
s++;
}
else
Perl_croak(aTHX_ "No directory specified for -I");
return s;
case 'l':
PL_minus_l = TRUE;
s++;
if (PL_ors)
Safefree(PL_ors);
if (isDIGIT(*s)) {
PL_ors = savepv("\n");
PL_orslen = 1;
numlen = 0; /* disallow underscores */
*PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
s += numlen;
}
else {
if (RsPARA(PL_nrs)) {
PL_ors = "\n\n";
PL_orslen = 2;
}
else
PL_ors = SvPV(PL_nrs, PL_orslen);
PL_ors = savepvn(PL_ors, PL_orslen);
}
return s;
case 'M':
forbid_setid("-M"); /* XXX ? */
/* FALL THROUGH */
case 'm':
forbid_setid("-m"); /* XXX ? */
if (*++s) {
char *start;
SV *sv;
char *use = "use ";
/* -M-foo == 'no foo' */
if (*s == '-') { use = "no "; ++s; }
sv = newSVpv(use,0);
start = s;
/* We allow -M'Module qw(Foo Bar)' */
while(isALNUM(*s) || *s==':') ++s;
if (*s != '=') {
sv_catpv(sv, start);
if (*(start-1) == 'm') {
if (*s != '\0')
Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
sv_catpv( sv, " ()");
}
} else {
if (s == start)
Perl_croak(aTHX_ "Module name required with -%c option",
s[-1]);
sv_catpvn(sv, start, s-start);
sv_catpv(sv, " split(/,/,q{");
sv_catpv(sv, ++s);
sv_catpv(sv, "})");
}
s += strlen(s);
if (!PL_preambleav)
PL_preambleav = newAV();
av_push(PL_preambleav, sv);
}
else
Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
return s;
case 'n':
PL_minus_n = TRUE;
s++;
return s;
case 'p':
PL_minus_p = TRUE;
s++;
return s;
case 's':
forbid_setid("-s");
PL_doswitches = TRUE;
s++;
return s;
case 'T':
if (!PL_tainting)
Perl_croak(aTHX_ "Too late for \"-T\" option");
s++;
return s;
case 'u':
#ifdef MACOS_TRADITIONAL
Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
#endif
PL_do_undump = TRUE;
s++;
return s;
case 'U':
PL_unsafe = TRUE;
s++;
return s;
case 'v':
PerlIO_printf(PerlIO_stdout(),
Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
PL_patchlevel, ARCHNAME));
#if defined(LOCAL_PATCH_COUNT)
if (LOCAL_PATCH_COUNT > 0)
PerlIO_printf(PerlIO_stdout(),
"\n(with %d registered patch%s, "
"see perl -V for more detail)",
(int)LOCAL_PATCH_COUNT,
(LOCAL_PATCH_COUNT!=1) ? "es" : "");
#endif
PerlIO_printf(PerlIO_stdout(),
"\n\nCopyright 1987-2001, Larry Wall\n");
#ifdef MACOS_TRADITIONAL
PerlIO_printf(PerlIO_stdout(),
"\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
#endif
#ifdef MSDOS
PerlIO_printf(PerlIO_stdout(),
"\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
#endif
#ifdef DJGPP
PerlIO_printf(PerlIO_stdout(),
"djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
"djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
#endif
#ifdef OS2
PerlIO_printf(PerlIO_stdout(),
"\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
"Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
#endif
#ifdef atarist
PerlIO_printf(PerlIO_stdout(),
"atariST series port, ++jrb bammi@cadence.com\n");
#endif
#ifdef __BEOS__
PerlIO_printf(PerlIO_stdout(),
"BeOS port Copyright Tom Spindler, 1997-1999\n");
#endif
#ifdef MPE
PerlIO_printf(PerlIO_stdout(),
"MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
#endif
#ifdef OEMVS
PerlIO_printf(PerlIO_stdout(),
"MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
#endif
#ifdef __VOS__
PerlIO_printf(PerlIO_stdout(),
"Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
#endif
#ifdef __OPEN_VM
PerlIO_printf(PerlIO_stdout(),
"VM/ESA port by Neale Ferguson, 1998-1999\n");
#endif
#ifdef POSIX_BC
PerlIO_printf(PerlIO_stdout(),
"BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
#endif
#ifdef __MINT__
PerlIO_printf(PerlIO_stdout(),
"MiNT port by Guido Flohr, 1997-1999\n");
#endif
#ifdef EPOC
PerlIO_printf(PerlIO_stdout(),
"EPOC port by Olaf Flebbe, 1999-2000\n");
#endif
#ifdef BINARY_BUILD_NOTICE
BINARY_BUILD_NOTICE;
#endif
PerlIO_printf(PerlIO_stdout(),
"\n\
Perl may be copied only under the terms of either the Artistic License or the\n\
GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
Complete documentation for Perl, including FAQ lists, should be found on\n\
this system using `man perl' or `perldoc perl'. If you have access to the\n\
Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
PerlProc_exit(0);
case 'w':
if (! (PL_dowarn & G_WARN_ALL_MASK))
PL_dowarn |= G_WARN_ON;
s++;
return s;
case 'W':
PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
PL_compiling.cop_warnings = pWARN_ALL ;
s++;
return s;
case 'X':
PL_dowarn = G_WARN_ALL_OFF;
PL_compiling.cop_warnings = pWARN_NONE ;
s++;
return s;
case '*':
case ' ':
if (s[1] == '-') /* Additional switches on #! line. */
return s+2;
break;
case '-':
case 0:
#if defined(WIN32) || !defined(PERL_STRICT_CR)
case '\r':
#endif
case '\n':
case '\t':
break;
#ifdef ALTERNATE_SHEBANG
case 'S': /* OS/2 needs -S on "extproc" line. */
break;
#endif
case 'P':
if (PL_preprocess)
return s+1;
/* FALL THROUGH */
default:
Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
}
return Nullch;
}
/* compliments of Tom Christiansen */
/* unexec() can be found in the Gnu emacs distribution */
/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
void
Perl_my_unexec(pTHX)
{
#ifdef UNEXEC
SV* prog;
SV* file;
int status = 1;
extern int etext;
prog = newSVpv(BIN_EXP, 0);
sv_catpv(prog, "/perl");
file = newSVpv(PL_origfilename, 0);
sv_catpv(file, ".perldump");
unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
/* unexec prints msg to stderr in case of failure */
PerlProc_exit(status);
#else
# ifdef VMS
# include <lib$routines.h>
lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
# else
ABORT(); /* for use with undump */
# endif
#endif
}
/* initialize curinterp */
STATIC void
S_init_interp(pTHX)
{
#ifdef PERL_OBJECT /* XXX kludge */
#define I_REINIT \
STMT_START { \
PL_chopset = " \n-"; \
PL_copline = NOLINE; \
PL_curcop = &PL_compiling;\
PL_curcopdb = NULL; \
PL_dbargs = 0; \
PL_dumpindent = 4; \
PL_laststatval = -1; \
PL_laststype = OP_STAT; \
PL_maxscream = -1; \
PL_maxsysfd = MAXSYSFD; \
PL_statname = Nullsv; \
PL_tmps_floor = -1; \
PL_tmps_ix = -1; \
PL_op_mask = NULL; \
PL_laststatval = -1; \
PL_laststype = OP_STAT; \
PL_mess_sv = Nullsv; \
PL_splitstr = " "; \
PL_generation = 100; \
PL_exitlist = NULL; \
PL_exitlistlen = 0; \
PL_regindent = 0; \
PL_in_clean_objs = FALSE; \
PL_in_clean_all = FALSE; \
PL_profiledata = NULL; \
PL_rsfp = Nullfp; \
PL_rsfp_filters = Nullav; \
PL_dirty = FALSE; \
} STMT_END
I_REINIT;
#else
# ifdef MULTIPLICITY
# define PERLVAR(var,type)
# define PERLVARA(var,n,type)
# if defined(PERL_IMPLICIT_CONTEXT)
# if defined(USE_THREADS)
# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
# else /* !USE_THREADS */
# define PERLVARI(var,type,init) aTHX->var = init;
# define PERLVARIC(var,type,init) aTHX->var = init;
# endif /* USE_THREADS */
# else
# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
# endif
# include "intrpvar.h"
# ifndef USE_THREADS
# include "thrdvar.h"
# endif
# undef PERLVAR
# undef PERLVARA
# undef PERLVARI
# undef PERLVARIC
# else
# define PERLVAR(var,type)
# define PERLVARA(var,n,type)
# define PERLVARI(var,type,init) PL_##var = init;
# define PERLVARIC(var,type,init) PL_##var = init;
# include "intrpvar.h"
# ifndef USE_THREADS
# include "thrdvar.h"
# endif
# undef PERLVAR
# undef PERLVARA
# undef PERLVARI
# undef PERLVARIC
# endif
#endif
}
STATIC void
S_init_main_stash(pTHX)
{
GV *gv;
/* Note that strtab is a rather special HV. Assumptions are made
about not iterating on it, and not adding tie magic to it.
It is properly deallocated in perl_destruct() */
PL_strtab = newHV();
#ifdef USE_THREADS
MUTEX_INIT(&PL_strtab_mutex);
#endif
HvSHAREKEYS_off(PL_strtab); /* mandatory */
hv_ksplit(PL_strtab, 512);
PL_curstash = PL_defstash = newHV();
PL_curstname = newSVpvn("main",4);
gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
SvREFCNT_dec(GvHV(gv));
GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
SvREADONLY_on(gv);
HvNAME(PL_defstash) = savepv("main");
PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
GvMULTI_on(PL_incgv);
PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
GvMULTI_on(PL_hintgv);
PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
GvMULTI_on(PL_errgv);
PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
GvMULTI_on(PL_replgv);
(void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
sv_setpvn(ERRSV, "", 0);
PL_curstash = PL_defstash;
CopSTASH_set(&PL_compiling, PL_defstash);
PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
/* We must init $/ before switches are processed. */
sv_setpvn(get_sv("/", TRUE), "\n", 1);
}
STATIC void
S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
{
*fdscript = -1;
if (PL_e_script) {
PL_origfilename = savepv("-e");
}
else {
/* if find_script() returns, it returns a malloc()-ed value */
PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
char *s = scriptname + 8;
*fdscript = atoi(s);
while (isDIGIT(*s))
s++;
if (*s) {
scriptname = savepv(s + 1);
Safefree(PL_origfilename);
PL_origfilename = scriptname;
}
}
}
#ifdef USE_ITHREADS
Safefree(CopFILE(PL_curcop));
#else
SvREFCNT_dec(CopFILEGV(PL_curcop));
#endif
CopFILE_set(PL_curcop, PL_origfilename);
if (strEQ(PL_origfilename,"-"))
scriptname = "";
if (*fdscript >= 0) {
PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
#if defined(HAS_FCNTL) && defined(F_SETFD)
if (PL_rsfp)
fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
#endif
}
else if (PL_preprocess) {
char *cpp_cfg = CPPSTDIN;
SV *cpp = newSVpvn("",0);
SV *cmd = NEWSV(0,0);
if (strEQ(cpp_cfg, "cppstdin"))
Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
sv_catpv(cpp, cpp_cfg);
sv_catpvn(sv, "-I", 2);
sv_catpv(sv,PRIVLIB_EXP);
#if defined(MSDOS) || defined(WIN32)
Perl_sv_setpvf(aTHX_ cmd, "\
sed %s -e \"/^[^#]/b\" \
-e \"/^#[ ]*include[ ]/b\" \
-e \"/^#[ ]*define[ ]/b\" \
-e \"/^#[ ]*if[ ]/b\" \
-e \"/^#[ ]*ifdef[ ]/b\" \
-e \"/^#[ ]*ifndef[ ]/b\" \
-e \"/^#[ ]*else/b\" \
-e \"/^#[ ]*elif[ ]/b\" \
-e \"/^#[ ]*undef[ ]/b\" \
-e \"/^#[ ]*endif/b\" \
-e \"s/^#.*//\" \
%s | %"SVf" -C %"SVf" %s",
(PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
#else
# ifdef __OPEN_VM
Perl_sv_setpvf(aTHX_ cmd, "\
%s %s -e '/^[^#]/b' \
-e '/^#[ ]*include[ ]/b' \
-e '/^#[ ]*define[ ]/b' \
-e '/^#[ ]*if[ ]/b' \
-e '/^#[ ]*ifdef[ ]/b' \
-e '/^#[ ]*ifndef[ ]/b' \
-e '/^#[ ]*else/b' \
-e '/^#[ ]*elif[ ]/b' \
-e '/^#[ ]*undef[ ]/b' \
-e '/^#[ ]*endif/b' \
-e 's/^[ ]*#.*//' \
%s | %"SVf" %"SVf" %s",
# else
Perl_sv_setpvf(aTHX_ cmd, "\
%s %s -e '/^[^#]/b' \
-e '/^#[ ]*include[ ]/b' \
-e '/^#[ ]*define[ ]/b' \
-e '/^#[ ]*if[ ]/b' \
-e '/^#[ ]*ifdef[ ]/b' \
-e '/^#[ ]*ifndef[ ]/b' \
-e '/^#[ ]*else/b' \
-e '/^#[ ]*elif[ ]/b' \
-e '/^#[ ]*undef[ ]/b' \
-e '/^#[ ]*endif/b' \
-e 's/^[ ]*#.*//' \
%s | %"SVf" -C %"SVf" %s",
# endif
#ifdef LOC_SED
LOC_SED,
#else
"sed",
#endif
(PL_doextract ? "-e '1,/^#/d\n'" : ""),
#endif
scriptname, cpp, sv, CPPMINUS);
PL_doextract = FALSE;
#ifdef IAMSUID /* actually, this is caught earlier */
if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
#ifdef HAS_SETEUID
(void)seteuid(PL_uid); /* musn't stay setuid root */
#else
#ifdef HAS_SETREUID
(void)setreuid((Uid_t)-1, PL_uid);
#else
#ifdef HAS_SETRESUID
(void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
#else
PerlProc_setuid(PL_uid);
#endif
#endif
#endif
if (PerlProc_geteuid() != PL_uid)
Perl_croak(aTHX_ "Can't do seteuid!\n");
}
#endif /* IAMSUID */
PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
SvREFCNT_dec(cmd);
SvREFCNT_dec(cpp);
}
else if (!*scriptname) {
forbid_setid("program input from stdin");
PL_rsfp = PerlIO_stdin();
}
else {
PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
#if defined(HAS_FCNTL) && defined(F_SETFD)
if (PL_rsfp)
fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
#endif
}
if (!PL_rsfp) {
#ifdef DOSUID
#ifndef IAMSUID /* in case script is not readable before setuid */
if (PL_euid &&
PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
PL_statbuf.st_mode & (S_ISUID|S_ISGID))
{
/* try again */
PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
(int)PERL_REVISION, (int)PERL_VERSION,
(int)PERL_SUBVERSION), PL_origargv);
Perl_croak(aTHX_ "Can't do setuid; ensure that the setuid bit is set on suidperl\n");
}
#endif
#endif
Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
CopFILE(PL_curcop), Strerror(errno));
}
}
/* Mention
* I_SYSSTATVFS HAS_FSTATVFS
* I_SYSMOUNT
* I_STATFS HAS_FSTATFS HAS_GETFSSTAT
* I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
* here so that metaconfig picks them up. */
#ifdef IAMSUID
STATIC int
S_fd_on_nosuid_fs(pTHX_ int fd)
{
int check_okay = 0; /* able to do all the required sys/libcalls */
int on_nosuid = 0; /* the fd is on a nosuid fs */
/*
* Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
* fstatvfs() is UNIX98.
* fstatfs() is 4.3 BSD.
* ustat()+getmnt() is pre-4.3 BSD.
* getmntent() is O(number-of-mounted-filesystems) and can hang on
* an irrelevant filesystem while trying to reach the right one.
*/
#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
defined(HAS_FSTATVFS)
# define FD_ON_NOSUID_CHECK_OKAY
struct statvfs stfs;
check_okay = fstatvfs(fd, &stfs) == 0;
on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
# endif /* fstatvfs */
# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
defined(PERL_MOUNT_NOSUID) && \
defined(HAS_FSTATFS) && \
defined(HAS_STRUCT_STATFS) && \
defined(HAS_STRUCT_STATFS_F_FLAGS)
# define FD_ON_NOSUID_CHECK_OKAY
struct statfs stfs;
check_okay = fstatfs(fd, &stfs) == 0;
on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
# endif /* fstatfs */
# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
defined(PERL_MOUNT_NOSUID) && \
defined(HAS_FSTAT) && \
defined(HAS_USTAT) && \
defined(HAS_GETMNT) && \
defined(HAS_STRUCT_FS_DATA) && \
defined(NOSTAT_ONE)
# define FD_ON_NOSUID_CHECK_OKAY
struct stat fdst;
if (fstat(fd, &fdst) == 0) {
struct ustat us;
if (ustat(fdst.st_dev, &us) == 0) {
struct fs_data fsd;
/* NOSTAT_ONE here because we're not examining fields which
* vary between that case and STAT_ONE. */
if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
size_t cmplen = sizeof(us.f_fname);
if (sizeof(fsd.fd_req.path) < cmplen)
cmplen = sizeof(fsd.fd_req.path);
if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
fdst.st_dev == fsd.fd_req.dev) {
check_okay = 1;
on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
}
}
}
}
}
# endif /* fstat+ustat+getmnt */
# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
defined(HAS_GETMNTENT) && \
defined(HAS_HASMNTOPT) && \
defined(MNTOPT_NOSUID)
# define FD_ON_NOSUID_CHECK_OKAY
FILE *mtab = fopen("/etc/mtab", "r");
struct mntent *entry;
struct stat stb, fsb;
if (mtab && (fstat(fd, &stb) == 0)) {
while (entry = getmntent(mtab)) {
if (stat(entry->mnt_dir, &fsb) == 0
&& fsb.st_dev == stb.st_dev)
{
/* found the filesystem */
check_okay = 1;
if (hasmntopt(entry, MNTOPT_NOSUID))
on_nosuid = 1;
break;
} /* A single fs may well fail its stat(). */
}
}
if (mtab)
fclose(mtab);
# endif /* getmntent+hasmntopt */
if (!check_okay)
Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
return on_nosuid;
}
#endif /* IAMSUID */
STATIC void
S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
{
#ifdef IAMSUID
int which;
#endif
/* do we need to emulate setuid on scripts? */
/* This code is for those BSD systems that have setuid #! scripts disabled
* in the kernel because of a security problem. Merely defining DOSUID
* in perl will not fix that problem, but if you have disabled setuid
* scripts in the kernel, this will attempt to emulate setuid and setgid
* on scripts that have those now-otherwise-useless bits set. The setuid
* root version must be called suidperl or sperlN.NNN. If regular perl
* discovers that it has opened a setuid script, it calls suidperl with
* the same argv that it had. If suidperl finds that the script it has
* just opened is NOT setuid root, it sets the effective uid back to the
* uid. We don't just make perl setuid root because that loses the
* effective uid we had before invoking perl, if it was different from the
* uid.
*
* DOSUID must be defined in both perl and suidperl, and IAMSUID must
* be defined in suidperl only. suidperl must be setuid root. The
* Configure script will set this up for you if you want it.
*/
#ifdef DOSUID
char *s, *s2;
if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
I32 len;
STRLEN n_a;
#ifdef IAMSUID
#ifndef HAS_SETREUID
/* On this access check to make sure the directories are readable,
* there is actually a small window that the user could use to make
* filename point to an accessible directory. So there is a faint
* chance that someone could execute a setuid script down in a
* non-accessible directory. I don't know what to do about that.
* But I don't think it's too important. The manual lies when
* it says access() is useful in setuid programs.
*/
if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
Perl_croak(aTHX_ "Permission denied");
#else
/* If we can swap euid and uid, then we can determine access rights
* with a simple stat of the file, and then compare device and
* inode to make sure we did stat() on the same file we opened.
* Then we just have to make sure he or she can execute it.
*/
{
struct stat tmpstatbuf;
if (
#ifdef HAS_SETREUID
setreuid(PL_euid,PL_uid) < 0
#else
# if HAS_SETRESUID
setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
# endif
#endif
|| PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
Perl_croak(aTHX_ "Permission denied");
#endif
if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
tmpstatbuf.st_ino != PL_statbuf.st_ino) {
(void)PerlIO_close(PL_rsfp);
Perl_croak(aTHX_ "Permission denied\n");
}
if (
#ifdef HAS_SETREUID
setreuid(PL_uid,PL_euid) < 0
#else
# if defined(HAS_SETRESUID)
setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
# endif
#endif
|| PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
Perl_croak(aTHX_ "Can't reswap uid and euid");
if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
Perl_croak(aTHX_ "Permission denied\n");
}
#endif /* HAS_SETREUID */
#endif /* IAMSUID */
if (!S_ISREG(PL_statbuf.st_mode))
Perl_croak(aTHX_ "Permission denied");
if (PL_statbuf.st_mode & S_IWOTH)
Perl_croak(aTHX_ "Setuid/gid script is writable by world");
PL_doswitches = FALSE; /* -s is insecure in suid */
CopLINE_inc(PL_curcop);
if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
Perl_croak(aTHX_ "No #! line");
s = SvPV(PL_linestr,n_a)+2;
if (*s == ' ') s++;
while (!isSPACE(*s)) s++;
for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
(isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
Perl_croak(aTHX_ "Not a perl script");
while (*s == ' ' || *s == '\t') s++;
/*
* #! arg must be what we saw above. They can invoke it by
* mentioning suidperl explicitly, but they may not add any strange
* arguments beyond what #! says if they do invoke suidperl that way.
*/
len = strlen(validarg);
if (strEQ(validarg," PHOOEY ") ||
strnNE(s,validarg,len) || !isSPACE(s[len]))
Perl_croak(aTHX_ "Args must match #! line");
#ifndef IAMSUID
if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
PL_euid == PL_statbuf.st_uid)
if (!PL_do_undump)
Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
#endif /* IAMSUID */
if (PL_euid) { /* oops, we're not the setuid root perl */
(void)PerlIO_close(PL_rsfp);
#ifndef IAMSUID
/* try again */
PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
(int)PERL_REVISION, (int)PERL_VERSION,
(int)PERL_SUBVERSION), PL_origargv);
#endif
Perl_croak(aTHX_ "Can't do setuid; ensure that the setuid bit is set on suidperl\n");
}
if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
#ifdef HAS_SETEGID
(void)setegid(PL_statbuf.st_gid);
#else
#ifdef HAS_SETREGID
(void)setregid((Gid_t)-1,PL_statbuf.st_gid);
#else
#ifdef HAS_SETRESGID
(void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
#else
PerlProc_setgid(PL_statbuf.st_gid);
#endif
#endif
#endif
if (PerlProc_getegid() != PL_statbuf.st_gid)
Perl_croak(aTHX_ "Can't do setegid!\n");
}
if (PL_statbuf.st_mode & S_ISUID) {
if (PL_statbuf.st_uid != PL_euid)
#ifdef HAS_SETEUID
(void)seteuid(PL_statbuf.st_uid); /* all that for this */
#else
#ifdef HAS_SETREUID
(void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
#else
#ifdef HAS_SETRESUID
(void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
#else
PerlProc_setuid(PL_statbuf.st_uid);
#endif
#endif
#endif
if (PerlProc_geteuid() != PL_statbuf.st_uid)
Perl_croak(aTHX_ "Can't do seteuid!\n");
}
else if (PL_uid) { /* oops, mustn't run as root */
#ifdef HAS_SETEUID
(void)seteuid((Uid_t)PL_uid);
#else
#ifdef HAS_SETREUID
(void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
#else
#ifdef HAS_SETRESUID
(void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
#else
PerlProc_setuid((Uid_t)PL_uid);
#endif
#endif
#endif
if (PerlProc_geteuid() != PL_uid)
Perl_croak(aTHX_ "Can't do seteuid!\n");
}
init_ids();
if (!cando(S_IXUSR,TRUE,&PL_statbuf))
Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
}
#ifdef IAMSUID
else if (PL_preprocess)
Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
else if (fdscript >= 0)
Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
else
Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
/* We absolutely must clear out any saved ids here, so we */
/* exec the real perl, substituting fd script for scriptname. */
/* (We pass script name as "subdir" of fd, which perl will grok.) */
PerlIO_rewind(PL_rsfp);
PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
if (!PL_origargv[which])
Perl_croak(aTHX_ "Permission denied");
PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
PerlIO_fileno(PL_rsfp), PL_origargv[which]));
#if defined(HAS_FCNTL) && defined(F_SETFD)
fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
#endif
PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
(int)PERL_REVISION, (int)PERL_VERSION,
(int)PERL_SUBVERSION), PL_origargv);/* try again */
Perl_croak(aTHX_ "Can't do setuid; ensure that the setuid bit is set on suidperl\n");
#endif /* IAMSUID */
#else /* !DOSUID */
if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
||
(PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
)
if (!PL_do_undump)
Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
/* not set-id, must be wrapped */
}
#endif /* DOSUID */
}
STATIC void
S_find_beginning(pTHX)
{
register char *s, *s2;
/* skip forward in input to the real script? */
forbid_setid("-x");
#ifdef MACOS_TRADITIONAL
/* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
while (PL_doextract || gMacPerl_AlwaysExtract) {
if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
if (!gMacPerl_AlwaysExtract)
Perl_croak(aTHX_ "No Perl script found in input\n");
if (PL_doextract) /* require explicit override ? */
if (!OverrideExtract(PL_origfilename))
Perl_croak(aTHX_ "User aborted script\n");
else
PL_doextract = FALSE;
/* Pater peccavi, file does not have #! */
PerlIO_rewind(PL_rsfp);
break;
}
#else
while (PL_doextract) {
if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
Perl_croak(aTHX_ "No Perl script found in input\n");
#endif
if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
PL_doextract = FALSE;
while (*s && !(isSPACE (*s) || *s == '#')) s++;
s2 = s;
while (*s == ' ' || *s == '\t') s++;
if (*s++ == '-') {
while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
if (strnEQ(s2-4,"perl",4))
/*SUPPRESS 530*/
while ((s = moreswitches(s)))
;
}
}
}
}
STATIC void
S_init_ids(pTHX)
{
PL_uid = PerlProc_getuid();
PL_euid = PerlProc_geteuid();
PL_gid = PerlProc_getgid();
PL_egid = PerlProc_getegid();
#ifdef VMS
PL_uid |= PL_gid << 16;
PL_euid |= PL_egid << 16;
#endif
PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
}
STATIC void
S_forbid_setid(pTHX_ char *s)
{
if (PL_euid != PL_uid)
Perl_croak(aTHX_ "No %s allowed while running setuid", s);
if (PL_egid != PL_gid)
Perl_croak(aTHX_ "No %s allowed while running setgid", s);
}
void
Perl_init_debugger(pTHX)
{
HV *ostash = PL_curstash;
PL_curstash = PL_debstash;
PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
AvREAL_off(PL_dbargs);
PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
sv_setiv(PL_DBsingle, 0);
PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
sv_setiv(PL_DBtrace, 0);
PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
sv_setiv(PL_DBsignal, 0);
PL_curstash = ostash;
}
#ifndef STRESS_REALLOC
#define REASONABLE(size) (size)
#else
#define REASONABLE(size) (1) /* unreasonable */
#endif
void
Perl_init_stacks(pTHX)
{
/* start with 128-item stack and 8K cxstack */
PL_curstackinfo = new_stackinfo(REASONABLE(128),
REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
PL_curstackinfo->si_type = PERLSI_MAIN;
PL_curstack = PL_curstackinfo->si_stack;
PL_mainstack = PL_curstack; /* remember in case we switch stacks */
PL_stack_base = AvARRAY(PL_curstack);
PL_stack_sp = PL_stack_base;
PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
New(50,PL_tmps_stack,REASONABLE(128),SV*);
PL_tmps_floor = -1;
PL_tmps_ix = -1;
PL_tmps_max = REASONABLE(128);
New(54,PL_markstack,REASONABLE(32),I32);
PL_markstack_ptr = PL_markstack;
PL_markstack_max = PL_markstack + REASONABLE(32);
SET_MARK_OFFSET;
New(54,PL_scopestack,REASONABLE(32),I32);
PL_scopestack_ix = 0;
PL_scopestack_max = REASONABLE(32);
New(54,PL_savestack,REASONABLE(128),ANY);
PL_savestack_ix = 0;
PL_savestack_max = REASONABLE(128);
New(54,PL_retstack,REASONABLE(16),OP*);
PL_retstack_ix = 0;
PL_retstack_max = REASONABLE(16);
}
#undef REASONABLE
STATIC void
S_nuke_stacks(pTHX)
{
while (PL_curstackinfo->si_next)
PL_curstackinfo = PL_curstackinfo->si_next;
while (PL_curstackinfo) {
PERL_SI *p = PL_curstackinfo->si_prev;
/* curstackinfo->si_stack got nuked by sv_free_arenas() */
Safefree(PL_curstackinfo->si_cxstack);
Safefree(PL_curstackinfo);
PL_curstackinfo = p;
}
Safefree(PL_tmps_stack);
Safefree(PL_markstack);
Safefree(PL_scopestack);
Safefree(PL_savestack);
Safefree(PL_retstack);
}
#ifndef PERL_OBJECT
static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
#endif
STATIC void
S_init_lexer(pTHX)
{
#ifdef PERL_OBJECT
PerlIO *tmpfp;
#endif
tmpfp = PL_rsfp;
PL_rsfp = Nullfp;
lex_start(PL_linestr);
PL_rsfp = tmpfp;
PL_subname = newSVpvn("main",4);
}
STATIC void
S_init_predump_symbols(pTHX)
{
GV *tmpgv;
IO *io;
sv_setpvn(get_sv("\"", TRUE), " ", 1);
PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
GvMULTI_on(PL_stdingv);
io = GvIOp(PL_stdingv);
IoIFP(io) = PerlIO_stdin();
tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
GvMULTI_on(tmpgv);
GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
GvMULTI_on(tmpgv);
io = GvIOp(tmpgv);
IoOFP(io) = IoIFP(io) = PerlIO_stdout();
setdefout(tmpgv);
tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
GvMULTI_on(tmpgv);
GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
GvMULTI_on(PL_stderrgv);
io = GvIOp(PL_stderrgv);
IoOFP(io) = IoIFP(io) = PerlIO_stderr();
tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
GvMULTI_on(tmpgv);
GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
PL_statname = NEWSV(66,0); /* last filename we did stat on */
if (PL_osname)
Safefree(PL_osname);
PL_osname = savepv(OSNAME);
}
STATIC void
S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
{
char *s;
SV *sv;
GV* tmpgv;
char **dup_env_base = 0;
int dup_env_count = 0;
argc--,argv++; /* skip name of script */
if (PL_doswitches) {
for (; argc > 0 && **argv == '-'; argc--,argv++) {
if (!argv[0][1])
break;
if (argv[0][1] == '-' && !argv[0][2]) {
argc--,argv++;
break;
}
if ((s = strchr(argv[0], '='))) {
*s++ = '\0';
sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
}
else
sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
}
}
PL_toptarget = NEWSV(0,0);
sv_upgrade(PL_toptarget, SVt_PVFM);
sv_setpvn(PL_toptarget, "", 0);
PL_bodytarget = NEWSV(0,0);
sv_upgrade(PL_bodytarget, SVt_PVFM);
sv_setpvn(PL_bodytarget, "", 0);
PL_formtarget = PL_bodytarget;
TAINT;
if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
#ifdef MACOS_TRADITIONAL
/* $0 is not majick on a Mac */
sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
#else
sv_setpv(GvSV(tmpgv),PL_origfilename);
magicname("0", "0", 1);
#endif
}
if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
#ifdef OS2
sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
#else
sv_setpv(GvSV(tmpgv),PL_origargv[0]);
#endif
if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
GvMULTI_on(PL_argvgv);
(void)gv_AVadd(PL_argvgv);
av_clear(GvAVn(PL_argvgv));
for (; argc > 0; argc--,argv++) {
SV *sv = newSVpv(argv[0],0);
av_push(GvAVn(PL_argvgv),sv);
if (PL_widesyscalls)
(void)sv_utf8_decode(sv);
}
}
if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
HV *hv;
GvMULTI_on(PL_envgv);
hv = GvHVn(PL_envgv);
hv_magic(hv, Nullgv, 'E');
#ifdef USE_ENVIRON_ARRAY
/* Note that if the supplied env parameter is actually a copy
of the global environ then it may now point to free'd memory
if the environment has been modified since. To avoid this
problem we treat env==NULL as meaning 'use the default'
*/
if (!env)
env = environ;
if (env != environ)
environ[0] = Nullch;
#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
{
char **env_base;
for (env_base = env; *env; env++)
dup_env_count++;
if ((dup_env_base = (char **)
safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
char **dup_env;
for (env = env_base, dup_env = dup_env_base;
*env;
env++, dup_env++) {
/* With environ one needs to use safesysmalloc(). */
*dup_env = safesysmalloc(strlen(*env) + 1);
(void)strcpy(*dup_env, *env);
}
*dup_env = Nullch;
env = dup_env_base;
} /* else what? */
}
#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
for (; *env; env++) {
if (!(s = strchr(*env,'=')))
continue;
*s++ = '\0';
#if defined(MSDOS)
(void)strupr(*env);
#endif
sv = newSVpv(s--,0);
(void)hv_store(hv, *env, s - *env, sv, 0);
*s = '=';
}
#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
if (dup_env_base) {
char **dup_env;
for (dup_env = dup_env_base; *dup_env; dup_env++)
safesysfree(*dup_env);
safesysfree(dup_env_base);
}
#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
#endif /* USE_ENVIRON_ARRAY */
#ifdef DYNAMIC_ENV_FETCH
HvNAME(hv) = savepv(ENV_HV_NAME);
#endif
}
TAINT_NOT;
if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
}
STATIC void
S_init_perllib(pTHX)
{
char *s;
if (!PL_tainting) {
#ifndef VMS
s = PerlEnv_getenv("PERL5LIB");
if (s)
incpush(s, TRUE, TRUE);
else
incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
#else /* VMS */
/* Treat PERL5?LIB as a possible search list logical name -- the
* "natural" VMS idiom for a Unix path string. We allow each
* element to be a set of |-separated directories for compatibility.
*/
char buf[256];
int idx = 0;
if (my_trnlnm("PERL5LIB",buf,0))
do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
else
while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
#endif /* VMS */
}
/* Use the ~-expanded versions of APPLLIB (undocumented),
ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
*/
#ifdef APPLLIB_EXP
incpush(APPLLIB_EXP, TRUE, TRUE);
#endif
#ifdef ARCHLIB_EXP
incpush(ARCHLIB_EXP, FALSE, FALSE);
#endif
#ifdef MACOS_TRADITIONAL
{
struct stat tmpstatbuf;
SV * privdir = NEWSV(55, 0);
char * macperl = PerlEnv_getenv("MACPERL");
if (!macperl)
macperl = "";
Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
incpush(SvPVX(privdir), TRUE, FALSE);
Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
incpush(SvPVX(privdir), TRUE, FALSE);
SvREFCNT_dec(privdir);
}
if (!PL_tainting)
incpush(":", FALSE, FALSE);
#else
#ifndef PRIVLIB_EXP
# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
#endif
#if defined(WIN32)
incpush(PRIVLIB_EXP, TRUE, FALSE);
#else
incpush(PRIVLIB_EXP, FALSE, FALSE);
#endif
#ifdef SITEARCH_EXP
/* sitearch is always relative to sitelib on Windows for
* DLL-based path intuition to work correctly */
# if !defined(WIN32)
incpush(SITEARCH_EXP, FALSE, FALSE);
# endif
#endif
#ifdef SITELIB_EXP
# if defined(WIN32)
incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
# else
incpush(SITELIB_EXP, FALSE, FALSE);
# endif
#endif
#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
incpush(SITELIB_STEM, FALSE, TRUE);
#endif
#ifdef PERL_VENDORARCH_EXP
/* vendorarch is always relative to vendorlib on Windows for
* DLL-based path intuition to work correctly */
# if !defined(WIN32)
incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
# endif
#endif
#ifdef PERL_VENDORLIB_EXP
# if defined(WIN32)
incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
# else
incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
# endif
#endif
#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
#endif
#ifdef PERL_OTHERLIBDIRS
incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
#endif
if (!PL_tainting)
incpush(".", FALSE, FALSE);
#endif /* MACOS_TRADITIONAL */
}
#if defined(DOSISH) || defined(EPOC)
# define PERLLIB_SEP ';'
#else
# if defined(VMS)
# define PERLLIB_SEP '|'
# else
# if defined(MACOS_TRADITIONAL)
# define PERLLIB_SEP ','
# else
# define PERLLIB_SEP ':'
# endif
# endif
#endif
#ifndef PERLLIB_MANGLE
# define PERLLIB_MANGLE(s,n) (s)
#endif
STATIC void
S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
{
SV *subdir = Nullsv;
if (!p || !*p)
return;
if (addsubdirs || addoldvers) {
subdir = sv_newmortal();
}
/* Break at all separators */
while (p && *p) {
SV *libdir = NEWSV(55,0);
char *s;
/* skip any consecutive separators */
while ( *p == PERLLIB_SEP ) {
/* Uncomment the next line for PATH semantics */
/* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
p++;
}
if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
(STRLEN)(s - p));
p = s + 1;
}
else {
sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
p = Nullch; /* break out */
}
#ifdef MACOS_TRADITIONAL
if (!strchr(SvPVX(libdir), ':'))
sv_insert(libdir, 0, 0, ":", 1);
if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
sv_catpv(libdir, ":");
#endif
/*
* BEFORE pushing libdir onto @INC we may first push version- and
* archname-specific sub-directories.
*/
if (addsubdirs || addoldvers) {
#ifdef PERL_INC_VERSION_LIST
/* Configure terminates PERL_INC_VERSION_LIST with a NULL */
const char *incverlist[] = { PERL_INC_VERSION_LIST };
const char **incver;
#endif
struct stat tmpstatbuf;
#ifdef VMS
char *unix;
STRLEN len;
if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
len = strlen(unix);
while (unix[len-1] == '/') len--; /* Cosmetic */
sv_usepvn(libdir,unix,len);
}
else
PerlIO_printf(Perl_error_log,
"Failed to unixify @INC element \"%s\"\n",
SvPV(libdir,len));
#endif
if (addsubdirs) {
#ifdef MACOS_TRADITIONAL
#define PERL_AV_SUFFIX_FMT ""
#define PERL_ARCH_FMT "%s:"
#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
#else
#define PERL_AV_SUFFIX_FMT "/"
#define PERL_ARCH_FMT "/%s"
#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
#endif
/* .../version/archname if -d .../version/archname */
Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
libdir,
(int)PERL_REVISION, (int)PERL_VERSION,
(int)PERL_SUBVERSION, ARCHNAME);
if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
S_ISDIR(tmpstatbuf.st_mode))
av_push(GvAVn(PL_incgv), newSVsv(subdir));
/* .../version if -d .../version */
Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
(int)PERL_REVISION, (int)PERL_VERSION,
(int)PERL_SUBVERSION);
if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
S_ISDIR(tmpstatbuf.st_mode))
av_push(GvAVn(PL_incgv), newSVsv(subdir));
/* .../archname if -d .../archname */
Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
S_ISDIR(tmpstatbuf.st_mode))
av_push(GvAVn(PL_incgv), newSVsv(subdir));
}
#ifdef PERL_INC_VERSION_LIST
if (addoldvers) {
for (incver = incverlist; *incver; incver++) {
/* .../xxx if -d .../xxx */
Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
S_ISDIR(tmpstatbuf.st_mode))
av_push(GvAVn(PL_incgv), newSVsv(subdir));
}
}
#endif
}
/* finally push this lib directory on the end of @INC */
av_push(GvAVn(PL_incgv), libdir);
}
}
#ifdef USE_THREADS
STATIC struct perl_thread *
S_init_main_thread(pTHX)
{
#if !defined(PERL_IMPLICIT_CONTEXT)
struct perl_thread *thr;
#endif
XPV *xpv;
Newz(53, thr, 1, struct perl_thread);
PL_curcop = &PL_compiling;
thr->interp = PERL_GET_INTERP;
thr->cvcache = newHV();
thr->threadsv = newAV();
/* thr->threadsvp is set when find_threadsv is called */
thr->specific = newAV();
thr->flags = THRf_R_JOINABLE;
MUTEX_INIT(&thr->mutex);
/* Handcraft thrsv similarly to mess_sv */
New(53, PL_thrsv, 1, SV);
Newz(53, xpv, 1, XPV);
SvFLAGS(PL_thrsv) = SVt_PV;
SvANY(PL_thrsv) = (void*)xpv;
SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
SvPVX(PL_thrsv) = (char*)thr;
SvCUR_set(PL_thrsv, sizeof(thr));
SvLEN_set(PL_thrsv, sizeof(thr));
*SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
thr->oursv = PL_thrsv;
PL_chopset = " \n-";
PL_dumpindent = 4;
MUTEX_LOCK(&PL_threads_mutex);
PL_nthreads++;
thr->tid = 0;
thr->next = thr;
thr->prev = thr;
MUTEX_UNLOCK(&PL_threads_mutex);
#ifdef HAVE_THREAD_INTERN
Perl_init_thread_intern(thr);
#endif
#ifdef SET_THREAD_SELF
SET_THREAD_SELF(thr);
#else
thr->self = pthread_self();
#endif /* SET_THREAD_SELF */
PERL_SET_THX(thr);
/*
* These must come after the thread self setting
* because sv_setpvn does SvTAINT and the taint
* fields thread selfness being set.
*/
PL_toptarget = NEWSV(0,0);
sv_upgrade(PL_toptarget, SVt_PVFM);
sv_setpvn(PL_toptarget, "", 0);
PL_bodytarget = NEWSV(0,0);
sv_upgrade(PL_bodytarget, SVt_PVFM);
sv_setpvn(PL_bodytarget, "", 0);
PL_formtarget = PL_bodytarget;
thr->errsv = newSVpvn("", 0);
(void) find_threadsv("@"); /* Ensure $@ is initialised early */
PL_maxscream = -1;
PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
PL_regindent = 0;
PL_reginterp_cnt = 0;
return thr;
}
#endif /* USE_THREADS */
void
Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
{
SV *atsv;
line_t oldline = CopLINE(PL_curcop);
CV *cv;
STRLEN len;
int ret;
dJMPENV;
while (AvFILL(paramList) >= 0) {
cv = (CV*)av_shift(paramList);
if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
/* save PL_beginav for compiler */
if (! PL_beginav_save)
PL_beginav_save = newAV();
av_push(PL_beginav_save, (SV*)cv);
} else {
SAVEFREESV(cv);
}
#ifdef PERL_FLEXIBLE_EXCEPTIONS
CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
#else
JMPENV_PUSH(ret);
#endif
switch (ret) {
case 0:
#ifndef PERL_FLEXIBLE_EXCEPTIONS
call_list_body(cv);
#endif
atsv = ERRSV;
(void)SvPV(atsv, len);
if (len) {
STRLEN n_a;
PL_curcop = &PL_compiling;
CopLINE_set(PL_curcop, oldline);
if (paramList == PL_beginav)
sv_catpv(atsv, "BEGIN failed--compilation aborted");
else
Perl_sv_catpvf(aTHX_ atsv,
"%s failed--call queue aborted",
paramList == PL_checkav ? "CHECK"
: paramList == PL_initav ? "INIT"
: "END");
while (PL_scopestack_ix > oldscope)
LEAVE;
JMPENV_POP;
Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
}
break;
case 1:
STATUS_ALL_FAILURE;
/* FALL THROUGH */
case 2:
/* my_exit() was called */
while (PL_scopestack_ix > oldscope)
LEAVE;
FREETMPS;
PL_curstash = PL_defstash;
PL_curcop = &PL_compiling;
CopLINE_set(PL_curcop, oldline);
JMPENV_POP;
if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
if (paramList == PL_beginav)
Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
else
Perl_croak(aTHX_ "%s failed--call queue aborted",
paramList == PL_checkav ? "CHECK"
: paramList == PL_initav ? "INIT"
: "END");
}
my_exit_jump();
/* NOTREACHED */
case 3:
if (PL_restartop) {
PL_curcop = &PL_compiling;
CopLINE_set(PL_curcop, oldline);
JMPENV_JUMP(3);
}
PerlIO_printf(Perl_error_log, "panic: restartop\n");
FREETMPS;
break;
}
JMPENV_POP;
}
}
#ifdef PERL_FLEXIBLE_EXCEPTIONS
STATIC void *
S_vcall_list_body(pTHX_ va_list args)
{
CV *cv = va_arg(args, CV*);
return call_list_body(cv);
}
#endif
STATIC void *
S_call_list_body(pTHX_ CV *cv)
{
PUSHMARK(PL_stack_sp);
call_sv((SV*)cv, G_EVAL|G_DISCARD);
return NULL;
}
void
Perl_my_exit(pTHX_ U32 status)
{
DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
thr, (unsigned long) status));
switch (status) {
case 0:
STATUS_ALL_SUCCESS;
break;
case 1:
STATUS_ALL_FAILURE;
break;
default:
STATUS_NATIVE_SET(status);
break;
}
my_exit_jump();
}
void
Perl_my_failure_exit(pTHX)
{
#ifdef VMS
if (vaxc$errno & 1) {
if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
STATUS_NATIVE_SET(44);
}
else {
if (!vaxc$errno && errno) /* unlikely */
STATUS_NATIVE_SET(44);
else
STATUS_NATIVE_SET(vaxc$errno);
}
#else
int exitstatus;
if (errno & 255)
STATUS_POSIX_SET(errno);
else {
exitstatus = STATUS_POSIX >> 8;
if (exitstatus & 255)
STATUS_POSIX_SET(exitstatus);
else
STATUS_POSIX_SET(255);
}
#endif
my_exit_jump();
}
STATIC void
S_my_exit_jump(pTHX)
{
register PERL_CONTEXT *cx;
I32 gimme;
SV **newsp;
if (PL_e_script) {
SvREFCNT_dec(PL_e_script);
PL_e_script = Nullsv;
}
POPSTACK_TO(PL_mainstack);
if (cxstack_ix >= 0) {
if (cxstack_ix > 0)
dounwind(0);
POPBLOCK(cx,PL_curpm);
LEAVE;
}
JMPENV_JUMP(2);
}
#ifdef PERL_OBJECT
#include "XSUB.h"
#endif
static I32
read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
{
char *p, *nl;
p = SvPVX(PL_e_script);
nl = strchr(p, '\n');
nl = (nl) ? nl+1 : SvEND(PL_e_script);
if (nl-p == 0) {
filter_del(read_e_script);
return 0;
}
sv_catpvn(buf_sv, p, nl-p);
sv_chop(PL_e_script, nl);
return 1;
}
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