[perl5.git] / ext / VMS-Stdio / Stdio.xs

/* VMS::Stdio - VMS extensions to stdio routines 
 *
 * Author:   Charles Bailey  bailey@newman.upenn.edu
 *
 */

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include <file.h>
#include <iodef.h>
#include <rms.h>
#include <starlet.h>

static bool
constant(char *name, IV *pval)
{
    if (strnNE(name, "O_", 2)) return FALSE;

    if (strEQ(name, "O_APPEND"))
#ifdef O_APPEND
	{ *pval = O_APPEND; return TRUE; }
#else
	return FALSE;
#endif
    if (strEQ(name, "O_CREAT"))
#ifdef O_CREAT
	{ *pval = O_CREAT; return TRUE; }
#else
	return FALSE;
#endif
    if (strEQ(name, "O_EXCL"))
#ifdef O_EXCL
	{ *pval = O_EXCL; return TRUE; }
#else
	return FALSE;
#endif
    if (strEQ(name, "O_NDELAY"))
#ifdef O_NDELAY
	{ *pval = O_NDELAY; return TRUE; }
#else
	return FALSE;
#endif
    if (strEQ(name, "O_NOWAIT"))
#ifdef O_NOWAIT
	{ *pval = O_NOWAIT; return TRUE; }
#else
	return FALSE;
#endif
    if (strEQ(name, "O_RDONLY"))
#ifdef O_RDONLY
	{ *pval = O_RDONLY; return TRUE; }
#else
	return FALSE;
#endif
    if (strEQ(name, "O_RDWR"))
#ifdef O_RDWR
	{ *pval = O_RDWR; return TRUE; }
#else
	return FALSE;
#endif
    if (strEQ(name, "O_TRUNC"))
#ifdef O_TRUNC
	{ *pval = O_TRUNC; return TRUE; }
#else
	return FALSE;
#endif
    if (strEQ(name, "O_WRONLY"))
#ifdef O_WRONLY
	{ *pval = O_WRONLY; return TRUE; }
#else
	return FALSE;
#endif

    return FALSE;
}


static SV *
newFH(PerlIO *fp, char type) {
    SV *rv;
    GV **stashp, *gv = (GV *)newSV(0);
    HV *stash;
    IO *io;

    /* Find stash for VMS::Stdio.  We don't do this once at boot
     * to allow for possibility of threaded Perl with per-thread
     * symbol tables.  This code (through io = ...) is really
     * equivalent to gv_fetchpv("VMS::Stdio::__FH__",TRUE,SVt_PVIO),
     * with a little less overhead, and good exercise for me. :-) */
    stashp = (GV **)hv_fetch(PL_defstash,"VMS::",5,TRUE);
    if (!stashp || *stashp == (GV *)&PL_sv_undef) return NULL;
    if (!(stash = GvHV(*stashp))) stash = GvHV(*stashp) = newHV();
    stashp = (GV **)hv_fetch(GvHV(*stashp),"Stdio::",7,TRUE);
    if (!stashp || *stashp == (GV *)&PL_sv_undef) return NULL;
    if (!(stash = GvHV(*stashp))) stash = GvHV(*stashp) = newHV();

    /* Set up GV to point to IO, and then take reference */
    gv_init(gv,stash,"__FH__",6,0);
    io = GvIOp(gv) = newIO();
    IoIFP(io) = fp;
    if (type != '<') IoOFP(io) = fp;
    IoTYPE(io) = type;
    rv = newRV((SV *)gv);
    SvREFCNT_dec(gv);
    return sv_bless(rv,stash);
}

MODULE = VMS::Stdio  PACKAGE = VMS::Stdio

void
constant(name)
	char *	name
	PROTOTYPE: $
	CODE:
	IV i;
	if (constant(name, &i))
	    ST(0) = sv_2mortal(newSViv(i));
	else
	    ST(0) = &PL_sv_undef;

void
binmode(fh)
	SV *	fh
	PROTOTYPE: $
	CODE:
           SV *name;
	   IO *io;
	   char iotype;
	   char filespec[NAM$C_MAXRSS], *acmode, *s, *colon, *dirend = NULL;
	   int ret = 0, saverrno = errno, savevmserrno = vaxc$errno;
           SV pos;
           PerlIO *fp;
	   io = sv_2io(fh);
           fp = io ? IoOFP(io) : NULL;
	   iotype = io ? IoTYPE(io) : '\0';
	    if (fp == NULL || strchr(">was+-|",iotype) == NULL) {
	      set_errno(EBADF); set_vaxc_errno(SS$_IVCHAN); XSRETURN_UNDEF;
	    }
           if (!PerlIO_getname(fp,filespec)) XSRETURN_UNDEF;
	    for (s = filespec; *s; s++) {
	      if (*s == ':') colon = s;
	      else if (*s == ']' || *s == '>') dirend = s;
	    }
	    /* Looks like a tmpfile, which will go away if reopened */
	    if (s == dirend + 3) {
	      set_errno(EBADF); set_vaxc_errno(RMS$_IOP); XSRETURN_UNDEF;
	    }
	    /* If we've got a non-file-structured device, clip off the trailing
	     * junk, and don't lose sleep if we can't get a stream position.  */
	    if (dirend == NULL) *(colon+1) = '\0'; 
           if (iotype != '-' && (ret = PerlIO_getpos(fp, &pos)) == -1 && dirend)
	      XSRETURN_UNDEF;
	    switch (iotype) {
	      case '<': case 'r':           acmode = "rb";                      break;
	      case '>': case 'w': case '|':
	        /* use 'a' instead of 'w' to avoid creating new file;
	           fsetpos below will take care of restoring file position */
	      case 'a':                     acmode = "ab";                      break;
	      case '+':  case 's':          acmode = "rb+";                     break;
             case '-':                     acmode = PerlIO_fileno(fp) ? "ab" : "rb";  break;
	      /* iotype'll be null for the SYS$INPUT:/SYS$OUTPUT:/SYS$ERROR: files */
	      /* since we didn't really open them and can't really */
	      /* reopen them */
	      case 0:                       XSRETURN_UNDEF;
	      default:
	        if (PL_dowarn) warn("Unrecognized iotype %c for %s in binmode",
	                         iotype, filespec);
	        acmode = "rb+";
	    }
           /* appearances to the contrary, this is an freopen substitute */
           name = sv_2mortal(newSVpvn(filespec,strlen(filespec)));
           if (PerlIO_openn(aTHX_ NULL,acmode,-1,0,0,fp,1,&name) == NULL) XSRETURN_UNDEF;
           if (iotype != '-' && ret != -1 && PerlIO_setpos(fp,&pos) == -1) XSRETURN_UNDEF;
	    if (ret == -1) { set_errno(saverrno); set_vaxc_errno(savevmserrno); }
	    XSRETURN_YES;


void
flush(fp)
       PerlIO * fp
	PROTOTYPE: $
	CODE:
           FILE *stdio = PerlIO_exportFILE(fp,0);
           if (fflush(stdio)) { ST(0) = &PL_sv_undef; }
           else            { clearerr(stdio); ST(0) = &PL_sv_yes; }
           PerlIO_releaseFILE(fp,stdio);

char *
getname(fp)
	PerlIO * fp
	PROTOTYPE: $
	CODE:
            FILE *stdio = PerlIO_exportFILE(fp,0);
	    char fname[NAM$C_MAXRSS+1];
	    ST(0) = sv_newmortal();
            if (fgetname(stdio,fname) != NULL) sv_setpv(ST(0),fname);
            PerlIO_releaseFILE(fp,stdio);

void
rewind(fp)
       PerlIO * fp
	PROTOTYPE: $
	CODE:
           FILE *stdio = PerlIO_exportFILE(fp,0);
           ST(0) = rewind(stdio) ? &PL_sv_undef : &PL_sv_yes;
           PerlIO_releaseFILE(fp,stdio);

void
remove(name)
	char *name
	PROTOTYPE: $
	CODE:
	    ST(0) = remove(name) ? &PL_sv_undef : &PL_sv_yes;

void
setdef(...)
	PROTOTYPE: @
	CODE:
	    char vmsdef[NAM$C_MAXRSS+1], es[NAM$C_MAXRSS], sep;
	    unsigned long int retsts;
	    struct FAB deffab = cc$rms_fab;
	    struct NAM defnam = cc$rms_nam;
	    struct dsc$descriptor_s dirdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
	    STRLEN n_a;
	    if (items) {
		SV *defsv = ST(items-1);  /* mimic chdir() */
		ST(0) = &PL_sv_undef;
		if (!SvPOK(defsv)) { SETERRNO(EINVAL,LIB$_INVARG); XSRETURN(1); }
		if (tovmsspec(SvPV(defsv,n_a),vmsdef) == NULL) { XSRETURN(1); }
		deffab.fab$l_fna = vmsdef; deffab.fab$b_fns = strlen(vmsdef);
	    }
	    else {
		deffab.fab$l_fna = "SYS$LOGIN"; deffab.fab$b_fns = 9;
		EXTEND(sp,1);  ST(0) = &PL_sv_undef;
	    }
	    defnam.nam$l_esa = es;  defnam.nam$b_ess = sizeof es;
	    deffab.fab$l_nam = &defnam;
	    retsts = sys$parse(&deffab,0,0);
	    if (retsts & 1) {
		if (defnam.nam$v_wildcard) retsts = RMS$_WLD;
		else if (defnam.nam$b_name || defnam.nam$b_type > 1 ||
	             defnam.nam$b_ver > 1) retsts = RMS$_DIR;
		}
	    defnam.nam$b_nop |= NAM$M_SYNCHK; defnam.nam$l_rlf = NULL; deffab.fab$b_dns = 0;
	    if (!(retsts & 1)) {
		set_vaxc_errno(retsts);
		switch (retsts) {
		    case RMS$_DNF:
			set_errno(ENOENT); break;
		    case RMS$_SYN: case RMS$_DIR: case RMS$_DEV:
			set_errno(EINVAL); break;
		    case RMS$_PRV:
			set_errno(EACCES); break;
		    default:
			set_errno(EVMSERR); break;
		}
		(void) sys$parse(&deffab,0,0);  /* free up context */
		XSRETURN(1);
	    }
	    sep = *defnam.nam$l_dir;
	    *defnam.nam$l_dir = '\0';
	    my_setenv("SYS$DISK",defnam.nam$b_node ? defnam.nam$l_node : defnam.nam$l_dev);
	    *defnam.nam$l_dir = sep;
	    dirdsc.dsc$a_pointer = defnam.nam$l_dir; dirdsc.dsc$w_length = defnam.nam$b_dir;
	    if ((retsts = sys$setddir(&dirdsc,0,0)) & 1) ST(0) = &PL_sv_yes;
	    else { set_errno(EVMSERR); set_vaxc_errno(retsts); }
	    (void) sys$parse(&deffab,0,0);  /* free up context */

void
sync(fp)
       PerlIO * fp
	PROTOTYPE: $
	CODE:
           FILE *stdio = PerlIO_exportFILE(fp,0);
           if (fsync(fileno(stdio))) { ST(0) = &PL_sv_undef; }
           else                   { clearerr(stdio); ST(0) = &PL_sv_yes; }
           PerlIO_releaseFILE(fp,stdio);

char *
tmpnam()
	PROTOTYPE:
	CODE:
	    char fname[L_tmpnam];
	    ST(0) = sv_newmortal();
	    if (tmpnam(fname) != NULL) sv_setpv(ST(0),fname);

void
vmsopen(spec,...)
	char *	spec
	PROTOTYPE: @
	CODE:
	    char *args[8],mode[3] = {'r','\0','\0'}, type = '<';
	    int i, myargc;
	    FILE *fp;
            SV *fh;
           PerlIO *pio_fp;
	    STRLEN n_a;
	
	    if (!spec || !*spec) {
	       SETERRNO(EINVAL,LIB$_INVARG);
	       XSRETURN_UNDEF;
	    }
	    if (items > 9) croak("too many args");
	
	    /* First, set up name and mode args from perl's string */
	    if (*spec == '+') {
	      mode[1] = '+';
	      spec++;
	    }
	    if (*spec == '>') {
	      if (*(spec+1) == '>') *mode = 'a', spec += 2;
	      else *mode = 'w',  spec++;
	    }
	    else if (*spec == '<') spec++;
	    myargc = items - 1;
	    for (i = 0; i < myargc; i++) args[i] = SvPV(ST(i+1),n_a);
	    /* This hack brought to you by C's opaque arglist management */
	    switch (myargc) {
	      case 0:
	        fp = fopen(spec,mode);
	        break;
	      case 1:
	        fp = fopen(spec,mode,args[0]);
	        break;
	      case 2:
	        fp = fopen(spec,mode,args[0],args[1]);
	        break;
	      case 3:
	        fp = fopen(spec,mode,args[0],args[1],args[2]);
	        break;
	      case 4:
	        fp = fopen(spec,mode,args[0],args[1],args[2],args[3]);
	        break;
	      case 5:
	        fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4]);
	        break;
	      case 6:
	        fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5]);
	        break;
	      case 7:
	        fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
	        break;
	      case 8:
	        fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
	        break;
	    }
	    if (fp != NULL) {
             pio_fp = PerlIO_fdopen(fileno(fp),mode);
             fh = newFH(pio_fp,(mode[1] ? '+' : (mode[0] == 'r' ? '<' : (mode[0] == 'a' ? 'a' : '>'))));
	     ST(0) = (fh ? sv_2mortal(fh) : &PL_sv_undef);
	    }
	    else { ST(0) = &PL_sv_undef; }

void
vmssysopen(spec,mode,perm,...)
	char *	spec
	int	mode
	int	perm
	PROTOTYPE: @
	CODE:
	    char *args[8];
	    int i, myargc, fd;
	    PerlIO *pio_fp;
	    SV *fh;
	    STRLEN n_a;
	    if (!spec || !*spec) {
	       SETERRNO(EINVAL,LIB$_INVARG);
	       XSRETURN_UNDEF;
	    }
	    if (items > 11) croak("too many args");
	    myargc = items - 3;
	    for (i = 0; i < myargc; i++) args[i] = SvPV(ST(i+3),n_a);
	    /* More fun with C calls; can't combine with above because
	       args 2,3 of different types in fopen() and open() */
	    switch (myargc) {
	      case 0:
	        fd = open(spec,mode,perm);
	        break;
	      case 1:
	        fd = open(spec,mode,perm,args[0]);
	        break;
	      case 2:
	        fd = open(spec,mode,perm,args[0],args[1]);
	        break;
	      case 3:
	        fd = open(spec,mode,perm,args[0],args[1],args[2]);
	        break;
	      case 4:
	        fd = open(spec,mode,perm,args[0],args[1],args[2],args[3]);
	        break;
	      case 5:
	        fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4]);
	        break;
	      case 6:
	        fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5]);
	        break;
	      case 7:
	        fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
	        break;
	      case 8:
	        fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
	        break;
	    }
	    i = mode & 3;
	    if (fd >= 0 &&
              ((pio_fp = PerlIO_fdopen(fd, &("r\000w\000r+"[2*i]))) != NULL)) {
             fh = newFH(pio_fp,"<>++"[i]);
	     ST(0) = (fh ? sv_2mortal(fh) : &PL_sv_undef);
	    }
	    else { ST(0) = &PL_sv_undef; }

void
waitfh(fp)
       PerlIO * fp
	PROTOTYPE: $
	CODE:
           FILE *stdio = PerlIO_exportFILE(fp,0);
           ST(0) = fwait(stdio) ? &PL_sv_undef : &PL_sv_yes;
           PerlIO_releaseFILE(fp,stdio);

void
writeof(mysv)
	SV *	mysv
	PROTOTYPE: $
	CODE:
	    char devnam[257], *cp;
	    unsigned long int chan, iosb[2], retsts, retsts2;
	    struct dsc$descriptor devdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, devnam};
	    IO *io = sv_2io(mysv);
           PerlIO *fp = io ? IoOFP(io) : NULL;
	    if (fp == NULL || strchr(">was+-|",IoTYPE(io)) == NULL) {
	      set_errno(EBADF); set_vaxc_errno(SS$_IVCHAN); XSRETURN_UNDEF;
	    }
           if (PerlIO_getname(fp,devnam) == NULL) { ST(0) = &PL_sv_undef; XSRETURN(1); }
	    if ((cp = strrchr(devnam,':')) != NULL) *(cp+1) = '\0';
	    devdsc.dsc$w_length = strlen(devnam);
	    retsts = sys$assign(&devdsc,&chan,0,0);
	    if (retsts & 1) retsts = sys$qiow(0,chan,IO$_WRITEOF,iosb,0,0,0,0,0,0,0,0);
	    if (retsts & 1) retsts = iosb[0];
	    retsts2 = sys$dassgn(chan);  /* Be sure to deassign the channel */
	    if (retsts & 1) retsts = retsts2;
	    if (retsts & 1) { ST(0) = &PL_sv_yes; }
	    else {
	      set_vaxc_errno(retsts);
	      switch (retsts) {
	        case SS$_EXQUOTA:  case SS$_INSFMEM:  case SS$_MBFULL:
	        case SS$_MBTOOSML: case SS$_NOIOCHAN: case SS$_NOLINKS:
	        case SS$_BUFFEROVF:
	          set_errno(ENOSPC); break;
	        case SS$_ILLIOFUNC: case SS$_DEVOFFLINE: case SS$_NOSUCHDEV:
	          set_errno(EBADF);  break;
	        case SS$_NOPRIV:
	          set_errno(EACCES); break;
	        default:  /* Includes "shouldn't happen" cases that might map */
	          set_errno(EVMSERR); break;         /* to other errno values */
	      }
	      ST(0) = &PL_sv_undef;
	    }
Commit	Line	Data
2ae00b68	1	/* VMS::Stdio - VMS extensions to stdio routines
748a9306	2	*
562a7b0c	3	* Author: Charles Bailey bailey@newman.upenn.edu
748a9306	4	*
748a9306 LW	5	*/
	6
	7	#include "EXTERN.h"
	8	#include "perl.h"
	9	#include "XSUB.h"
2ae00b68	10	#include <file.h>
17f28c40 CB	11	#include <iodef.h>
	12	#include <rms.h>
	13	#include <starlet.h>
2ae00b68	14
2ae00b68	15	static bool
b626ecd9	16	constant(char name, IV pval)
2ae00b68	17	{
	18	if (strnNE(name, "O_", 2)) return FALSE;
	19
	20	if (strEQ(name, "O_APPEND"))
	21	#ifdef O_APPEND
	22	{ *pval = O_APPEND; return TRUE; }
	23	#else
	24	return FALSE;
	25	#endif
	26	if (strEQ(name, "O_CREAT"))
	27	#ifdef O_CREAT
	28	{ *pval = O_CREAT; return TRUE; }
	29	#else
	30	return FALSE;
	31	#endif
	32	if (strEQ(name, "O_EXCL"))
	33	#ifdef O_EXCL
	34	{ *pval = O_EXCL; return TRUE; }
	35	#else
	36	return FALSE;
	37	#endif
	38	if (strEQ(name, "O_NDELAY"))
	39	#ifdef O_NDELAY
	40	{ *pval = O_NDELAY; return TRUE; }
	41	#else
	42	return FALSE;
	43	#endif
	44	if (strEQ(name, "O_NOWAIT"))
	45	#ifdef O_NOWAIT
	46	{ *pval = O_NOWAIT; return TRUE; }
	47	#else
	48	return FALSE;
	49	#endif
	50	if (strEQ(name, "O_RDONLY"))
	51	#ifdef O_RDONLY
	52	{ *pval = O_RDONLY; return TRUE; }
	53	#else
	54	return FALSE;
	55	#endif
	56	if (strEQ(name, "O_RDWR"))
	57	#ifdef O_RDWR
	58	{ *pval = O_RDWR; return TRUE; }
	59	#else
	60	return FALSE;
	61	#endif
	62	if (strEQ(name, "O_TRUNC"))
	63	#ifdef O_TRUNC
	64	{ *pval = O_TRUNC; return TRUE; }
	65	#else
	66	return FALSE;
	67	#endif
	68	if (strEQ(name, "O_WRONLY"))
	69	#ifdef O_WRONLY
	70	{ *pval = O_WRONLY; return TRUE; }
	71	#else
	72	return FALSE;
	73	#endif
	74
	75	return FALSE;
	76	}
748a9306	77
748a9306	78
2ae00b68	79	static SV *
a15cef0c	80	newFH(PerlIO *fp, char type) {
55497cff	81	SV *rv;
561b68a9	82	GV *stashp, gv = (GV *)newSV(0);
2ae00b68	83	HV *stash;
	84	IO *io;
	85
	86	/* Find stash for VMS::Stdio. We don't do this once at boot
	87	* to allow for possibility of threaded Perl with per-thread
	88	* symbol tables. This code (through io = ...) is really
	89	* equivalent to gv_fetchpv("VMS::Stdio::__FH__",TRUE,SVt_PVIO),
	90	* with a little less overhead, and good exercise for me. :-) */
6b88bc9c	91	stashp = (GV **)hv_fetch(PL_defstash,"VMS::",5,TRUE);
4e205ed6	92	if (!stashp \|\| stashp == (GV )&PL_sv_undef) return NULL;
2ae00b68	93	if (!(stash = GvHV(stashp))) stash = GvHV(stashp) = newHV();
2ae00b68	94	stashp = (GV *)hv_fetch(GvHV(stashp),"Stdio::",7,TRUE);
4e205ed6	95	if (!stashp \|\| stashp == (GV )&PL_sv_undef) return NULL;
2ae00b68	96	if (!(stash = GvHV(stashp))) stash = GvHV(stashp) = newHV();
	97
	98	/* Set up GV to point to IO, and then take reference */
	99	gv_init(gv,stash,"__FH__",6,0);
	100	io = GvIOp(gv) = newIO();
	101	IoIFP(io) = fp;
5f05dabc	102	if (type != '<') IoOFP(io) = fp;
2ae00b68	103	IoTYPE(io) = type;
55497cff	104	rv = newRV((SV *)gv);
2ae00b68	105	SvREFCNT_dec(gv);
	106	return sv_bless(rv,stash);
	107	}
	108
	109	MODULE = VMS::Stdio PACKAGE = VMS::Stdio
748a9306 LW	110
748a9306 LW	111	void
2ae00b68	112	constant(name)
748a9306	113	char * name
2ae00b68	114	PROTOTYPE: $
	115	CODE:
	116	IV i;
	117	if (constant(name, &i))
	118	ST(0) = sv_2mortal(newSViv(i));
	119	else
6b88bc9c	120	ST(0) = &PL_sv_undef;
2ae00b68	121
2ae00b68	122	void
562a7b0c CB	123	binmode(fh)
	124	SV * fh
	125	PROTOTYPE: $
	126	CODE:
493ba88a PP	127	SV *name;
	128	IO *io;
	129	char iotype;
4e205ed6	130	char filespec[NAM$C_MAXRSS], acmode, s, colon, dirend = NULL;
493ba88a	131	int ret = 0, saverrno = errno, savevmserrno = vaxc$errno;
a15cef0c	132	SV pos;
493ba88a PP	133	PerlIO *fp;
	134	io = sv_2io(fh);
	135	fp = io ? IoOFP(io) : NULL;
	136	iotype = io ? IoTYPE(io) : '\0';
4e205ed6	137	if (fp == NULL \|\| strchr(">was+-\|",iotype) == NULL) {
562a7b0c CB	138	set_errno(EBADF); set_vaxc_errno(SS$_IVCHAN); XSRETURN_UNDEF;
562a7b0c CB	139	}
a15cef0c	140	if (!PerlIO_getname(fp,filespec)) XSRETURN_UNDEF;
562a7b0c CB	141	for (s = filespec; *s; s++) {
	142	if (*s == ':') colon = s;
	143	else if (s == ']' \|\| s == '>') dirend = s;
	144	}
	145	/* Looks like a tmpfile, which will go away if reopened */
	146	if (s == dirend + 3) {
	147	set_errno(EBADF); set_vaxc_errno(RMS$_IOP); XSRETURN_UNDEF;
	148	}
	149	/* If we've got a non-file-structured device, clip off the trailing
	150	* junk, and don't lose sleep if we can't get a stream position. */
4e205ed6	151	if (dirend == NULL) *(colon+1) = '\0';
a15cef0c	152	if (iotype != '-' && (ret = PerlIO_getpos(fp, &pos)) == -1 && dirend)
562a7b0c CB	153	XSRETURN_UNDEF;
	154	switch (iotype) {
	155	case '<': case 'r': acmode = "rb"; break;
	156	case '>': case 'w': case '\|':
	157	/* use 'a' instead of 'w' to avoid creating new file;
	158	fsetpos below will take care of restoring file position */
	159	case 'a': acmode = "ab"; break;
	160	case '+': case 's': acmode = "rb+"; break;
a15cef0c	161	case '-': acmode = PerlIO_fileno(fp) ? "ab" : "rb"; break;
562a7b0c CB	162	/* iotype'll be null for the SYS$INPUT:/SYS$OUTPUT:/SYS$ERROR: files */
	163	/* since we didn't really open them and can't really */
	164	/* reopen them */
	165	case 0: XSRETURN_UNDEF;
	166	default:
	167	if (PL_dowarn) warn("Unrecognized iotype %c for %s in binmode",
	168	iotype, filespec);
	169	acmode = "rb+";
	170	}
a15cef0c	171	/* appearances to the contrary, this is an freopen substitute */
493ba88a	172	name = sv_2mortal(newSVpvn(filespec,strlen(filespec)));
4e205ed6	173	if (PerlIO_openn(aTHX_ NULL,acmode,-1,0,0,fp,1,&name) == NULL) XSRETURN_UNDEF;
a15cef0c	174	if (iotype != '-' && ret != -1 && PerlIO_setpos(fp,&pos) == -1) XSRETURN_UNDEF;
562a7b0c CB	175	if (ret == -1) { set_errno(saverrno); set_vaxc_errno(savevmserrno); }
	176	XSRETURN_YES;
	177
	178
	179	void
17f28c40	180	flush(fp)
a15cef0c	181	PerlIO * fp
2ae00b68	182	PROTOTYPE: $
2ae00b68	183	CODE:
a15cef0c CB	184	FILE *stdio = PerlIO_exportFILE(fp,0);
	185	if (fflush(stdio)) { ST(0) = &PL_sv_undef; }
	186	else { clearerr(stdio); ST(0) = &PL_sv_yes; }
	187	PerlIO_releaseFILE(fp,stdio);
2ae00b68	188
	189	char *
	190	getname(fp)
7f8ddb16	191	PerlIO * fp
2ae00b68	192	PROTOTYPE: $
2ae00b68	193	CODE:
7f8ddb16	194	FILE *stdio = PerlIO_exportFILE(fp,0);
17f28c40	195	char fname[NAM$C_MAXRSS+1];
2ae00b68	196	ST(0) = sv_newmortal();
7f8ddb16	197	if (fgetname(stdio,fname) != NULL) sv_setpv(ST(0),fname);
b89086ac	198	PerlIO_releaseFILE(fp,stdio);
2ae00b68	199
	200	void
	201	rewind(fp)
a15cef0c	202	PerlIO * fp
2ae00b68	203	PROTOTYPE: $
2ae00b68	204	CODE:
a15cef0c CB	205	FILE *stdio = PerlIO_exportFILE(fp,0);
	206	ST(0) = rewind(stdio) ? &PL_sv_undef : &PL_sv_yes;
	207	PerlIO_releaseFILE(fp,stdio);
2ae00b68	208
	209	void
	210	remove(name)
	211	char *name
	212	PROTOTYPE: $
	213	CODE:
6b88bc9c	214	ST(0) = remove(name) ? &PL_sv_undef : &PL_sv_yes;
2ae00b68	215
2ae00b68	216	void
17f28c40 CB	217	setdef(...)
	218	PROTOTYPE: @
	219	CODE:
	220	char vmsdef[NAM$C_MAXRSS+1], es[NAM$C_MAXRSS], sep;
	221	unsigned long int retsts;
	222	struct FAB deffab = cc$rms_fab;
	223	struct NAM defnam = cc$rms_nam;
	224	struct dsc$descriptor_s dirdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2d8e6c8d	225	STRLEN n_a;
17f28c40 CB	226	if (items) {
17f28c40 CB	227	SV defsv = ST(items-1); / mimic chdir() */
6b88bc9c	228	ST(0) = &PL_sv_undef;
17f28c40	229	if (!SvPOK(defsv)) { SETERRNO(EINVAL,LIB$_INVARG); XSRETURN(1); }
2d8e6c8d	230	if (tovmsspec(SvPV(defsv,n_a),vmsdef) == NULL) { XSRETURN(1); }
17f28c40 CB	231	deffab.fab$l_fna = vmsdef; deffab.fab$b_fns = strlen(vmsdef);
	232	}
	233	else {
	234	deffab.fab$l_fna = "SYS$LOGIN"; deffab.fab$b_fns = 9;
6b88bc9c	235	EXTEND(sp,1); ST(0) = &PL_sv_undef;
17f28c40 CB	236	}
	237	defnam.nam$l_esa = es; defnam.nam$b_ess = sizeof es;
	238	deffab.fab$l_nam = &defnam;
	239	retsts = sys$parse(&deffab,0,0);
	240	if (retsts & 1) {
	241	if (defnam.nam$v_wildcard) retsts = RMS$_WLD;
	242	else if (defnam.nam$b_name \|\| defnam.nam$b_type > 1 \|\|
	243	defnam.nam$b_ver > 1) retsts = RMS$_DIR;
	244	}
	245	defnam.nam$b_nop \|= NAM$M_SYNCHK; defnam.nam$l_rlf = NULL; deffab.fab$b_dns = 0;
	246	if (!(retsts & 1)) {
	247	set_vaxc_errno(retsts);
	248	switch (retsts) {
	249	case RMS$_DNF:
	250	set_errno(ENOENT); break;
	251	case RMS$_SYN: case RMS$_DIR: case RMS$_DEV:
	252	set_errno(EINVAL); break;
	253	case RMS$_PRV:
	254	set_errno(EACCES); break;
	255	default:
	256	set_errno(EVMSERR); break;
	257	}
	258	(void) sys$parse(&deffab,0,0); /* free up context */
	259	XSRETURN(1);
	260	}
	261	sep = *defnam.nam$l_dir;
	262	*defnam.nam$l_dir = '\0';
	263	my_setenv("SYS$DISK",defnam.nam$b_node ? defnam.nam$l_node : defnam.nam$l_dev);
	264	*defnam.nam$l_dir = sep;
	265	dirdsc.dsc$a_pointer = defnam.nam$l_dir; dirdsc.dsc$w_length = defnam.nam$b_dir;
6b88bc9c	266	if ((retsts = sys$setddir(&dirdsc,0,0)) & 1) ST(0) = &PL_sv_yes;
17f28c40 CB	267	else { set_errno(EVMSERR); set_vaxc_errno(retsts); }
	268	(void) sys$parse(&deffab,0,0); /* free up context */
	269
	270	void
2ae00b68	271	sync(fp)
a15cef0c	272	PerlIO * fp
2ae00b68	273	PROTOTYPE: $
2ae00b68	274	CODE:
a15cef0c CB	275	FILE *stdio = PerlIO_exportFILE(fp,0);
	276	if (fsync(fileno(stdio))) { ST(0) = &PL_sv_undef; }
	277	else { clearerr(stdio); ST(0) = &PL_sv_yes; }
	278	PerlIO_releaseFILE(fp,stdio);
2ae00b68	279
	280	char *
	281	tmpnam()
	282	PROTOTYPE:
	283	CODE:
	284	char fname[L_tmpnam];
	285	ST(0) = sv_newmortal();
	286	if (tmpnam(fname) != NULL) sv_setpv(ST(0),fname);
	287
	288	void
	289	vmsopen(spec,...)
	290	char * spec
	291	PROTOTYPE: @
748a9306	292	CODE:
2ae00b68	293	char *args[8],mode[3] = {'r','\0','\0'}, type = '<';
5aaab254	294	int i, myargc;
748a9306	295	FILE *fp;
493ba88a	296	SV *fh;
a15cef0c	297	PerlIO *pio_fp;
2d8e6c8d	298	STRLEN n_a;
2ae00b68	299
	300	if (!spec \|\| !*spec) {
	301	SETERRNO(EINVAL,LIB$_INVARG);
	302	XSRETURN_UNDEF;
748a9306	303	}
2ae00b68	304	if (items > 9) croak("too many args");
2ae00b68	305
748a9306	306	/* First, set up name and mode args from perl's string */
2ae00b68	307	if (*spec == '+') {
748a9306	308	mode[1] = '+';
2ae00b68	309	spec++;
748a9306	310	}
2ae00b68	311	if (*spec == '>') {
	312	if ((spec+1) == '>') mode = 'a', spec += 2;
	313	else *mode = 'w', spec++;
748a9306	314	}
2ae00b68	315	else if (*spec == '<') spec++;
748a9306	316	myargc = items - 1;
2d8e6c8d	317	for (i = 0; i < myargc; i++) args[i] = SvPV(ST(i+1),n_a);
748a9306 LW	318	/* This hack brought to you by C's opaque arglist management */
	319	switch (myargc) {
	320	case 0:
2ae00b68	321	fp = fopen(spec,mode);
748a9306 LW	322	break;
748a9306 LW	323	case 1:
2ae00b68	324	fp = fopen(spec,mode,args[0]);
748a9306 LW	325	break;
748a9306 LW	326	case 2:
2ae00b68	327	fp = fopen(spec,mode,args[0],args[1]);
748a9306 LW	328	break;
748a9306 LW	329	case 3:
2ae00b68	330	fp = fopen(spec,mode,args[0],args[1],args[2]);
748a9306 LW	331	break;
748a9306 LW	332	case 4:
2ae00b68	333	fp = fopen(spec,mode,args[0],args[1],args[2],args[3]);
748a9306 LW	334	break;
748a9306 LW	335	case 5:
2ae00b68	336	fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4]);
748a9306 LW	337	break;
748a9306 LW	338	case 6:
2ae00b68	339	fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5]);
748a9306 LW	340	break;
748a9306 LW	341	case 7:
2ae00b68	342	fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
748a9306 LW	343	break;
748a9306 LW	344	case 8:
2ae00b68	345	fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
748a9306 LW	346	break;
748a9306 LW	347	}
b9893e57	348	if (fp != NULL) {
7f8ddb16	349	pio_fp = PerlIO_fdopen(fileno(fp),mode);
493ba88a PP	350	fh = newFH(pio_fp,(mode[1] ? '+' : (mode[0] == 'r' ? '<' : (mode[0] == 'a' ? 'a' : '>'))));
493ba88a PP	351	ST(0) = (fh ? sv_2mortal(fh) : &PL_sv_undef);
748a9306	352	}
6b88bc9c	353	else { ST(0) = &PL_sv_undef; }
748a9306	354
2ae00b68	355	void
	356	vmssysopen(spec,mode,perm,...)
	357	char * spec
	358	int mode
	359	int perm
	360	PROTOTYPE: @
748a9306	361	CODE:
2ae00b68	362	char *args[8];
2ae00b68	363	int i, myargc, fd;
7f8ddb16	364	PerlIO *pio_fp;
2ae00b68	365	SV *fh;
2d8e6c8d	366	STRLEN n_a;
2ae00b68	367	if (!spec \|\| !*spec) {
	368	SETERRNO(EINVAL,LIB$_INVARG);
	369	XSRETURN_UNDEF;
	370	}
	371	if (items > 11) croak("too many args");
	372	myargc = items - 3;
2d8e6c8d	373	for (i = 0; i < myargc; i++) args[i] = SvPV(ST(i+3),n_a);
2ae00b68	374	/* More fun with C calls; can't combine with above because
	375	args 2,3 of different types in fopen() and open() */
	376	switch (myargc) {
	377	case 0:
	378	fd = open(spec,mode,perm);
	379	break;
	380	case 1:
	381	fd = open(spec,mode,perm,args[0]);
	382	break;
	383	case 2:
	384	fd = open(spec,mode,perm,args[0],args[1]);
	385	break;
	386	case 3:
	387	fd = open(spec,mode,perm,args[0],args[1],args[2]);
	388	break;
	389	case 4:
	390	fd = open(spec,mode,perm,args[0],args[1],args[2],args[3]);
	391	break;
	392	case 5:
	393	fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4]);
	394	break;
	395	case 6:
	396	fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5]);
	397	break;
	398	case 7:
	399	fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
	400	break;
	401	case 8:
	402	fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
	403	break;
	404	}
	405	i = mode & 3;
	406	if (fd >= 0 &&
4e205ed6	407	((pio_fp = PerlIO_fdopen(fd, &("r\000w\000r+"[2*i]))) != NULL)) {
493ba88a PP	408	fh = newFH(pio_fp,"<>++"[i]);
493ba88a PP	409	ST(0) = (fh ? sv_2mortal(fh) : &PL_sv_undef);
2ae00b68	410	}
6b88bc9c	411	else { ST(0) = &PL_sv_undef; }
748a9306	412
2ae00b68	413	void
2ae00b68	414	waitfh(fp)
a15cef0c	415	PerlIO * fp
2ae00b68	416	PROTOTYPE: $
748a9306	417	CODE:
a15cef0c CB	418	FILE *stdio = PerlIO_exportFILE(fp,0);
	419	ST(0) = fwait(stdio) ? &PL_sv_undef : &PL_sv_yes;
	420	PerlIO_releaseFILE(fp,stdio);
17f28c40 CB	421
	422	void
	423	writeof(mysv)
	424	SV * mysv
	425	PROTOTYPE: $
	426	CODE:
	427	char devnam[257], *cp;
	428	unsigned long int chan, iosb[2], retsts, retsts2;
	429	struct dsc$descriptor devdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, devnam};
	430	IO *io = sv_2io(mysv);
a15cef0c	431	PerlIO *fp = io ? IoOFP(io) : NULL;
4e205ed6	432	if (fp == NULL \|\| strchr(">was+-\|",IoTYPE(io)) == NULL) {
562a7b0c	433	set_errno(EBADF); set_vaxc_errno(SS$_IVCHAN); XSRETURN_UNDEF;
17f28c40	434	}
4e205ed6	435	if (PerlIO_getname(fp,devnam) == NULL) { ST(0) = &PL_sv_undef; XSRETURN(1); }
17f28c40 CB	436	if ((cp = strrchr(devnam,':')) != NULL) *(cp+1) = '\0';
	437	devdsc.dsc$w_length = strlen(devnam);
	438	retsts = sys$assign(&devdsc,&chan,0,0);
	439	if (retsts & 1) retsts = sys$qiow(0,chan,IO$_WRITEOF,iosb,0,0,0,0,0,0,0,0);
	440	if (retsts & 1) retsts = iosb[0];
	441	retsts2 = sys$dassgn(chan); /* Be sure to deassign the channel */
	442	if (retsts & 1) retsts = retsts2;
6b88bc9c	443	if (retsts & 1) { ST(0) = &PL_sv_yes; }
17f28c40 CB	444	else {
	445	set_vaxc_errno(retsts);
	446	switch (retsts) {
	447	case SS$_EXQUOTA: case SS$_INSFMEM: case SS$_MBFULL:
	448	case SS$_MBTOOSML: case SS$_NOIOCHAN: case SS$_NOLINKS:
	449	case SS$_BUFFEROVF:
	450	set_errno(ENOSPC); break;
	451	case SS$_ILLIOFUNC: case SS$_DEVOFFLINE: case SS$_NOSUCHDEV:
	452	set_errno(EBADF); break;
	453	case SS$_NOPRIV:
	454	set_errno(EACCES); break;
	455	default: /* Includes "shouldn't happen" cases that might map */
	456	set_errno(EVMSERR); break; /* to other errno values */
	457	}
6b88bc9c	458	ST(0) = &PL_sv_undef;
17f28c40	459	}