[p5sagit/p5-mst-13.2.git] / vms / ext / Stdio / Stdio.xs

/* VMS::Stdio - VMS extensions to stdio routines 
 *
 * Version:  2.2
 * Author:   Charles Bailey  bailey@newman.upenn.edu
 * Revised:  18-Jul-1998
 *
 */

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

static bool
constant(name, pval)
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(FILE *fp, char type) {
    SV *rv;
    GV **stashp, *gv = (GV *)NEWSV(0,0);
    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 Nullsv;
    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 Nullsv;
    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:
	    IO *io = sv_2io(fh);
	    FILE *fp = io ? IoOFP(io) : NULL;
	    char iotype = io ? IoTYPE(io) : '\0';
	    char filespec[NAM$C_MAXRSS], *acmode, *s, *colon, *dirend = Nullch;
	    int ret = 0, saverrno = errno, savevmserrno = vaxc$errno;
	    fpos_t pos;
	    if (fp == NULL || strchr(">was+-|",iotype) == Nullch) {
	      set_errno(EBADF); set_vaxc_errno(SS$_IVCHAN); XSRETURN_UNDEF;
	    }
	    if (!fgetname(fp,filespec)) XSRETURN_UNDEF;
	    for (s = filespec; *s; s++) {
	      if (*s == ':') colon = s;
	      else if (*s == ']' || *s == '>') dirend = s;
	    }
	    /* Looks like a tmpfile, which will go away if reopened */
	    if (s == dirend + 3) {
	      set_errno(EBADF); set_vaxc_errno(RMS$_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 == Nullch) *(colon+1) = '\0'; 
	    if (iotype != '-' && (ret = fgetpos(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 = 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+";
	    }
	    if (freopen(filespec,acmode,fp) == NULL) XSRETURN_UNDEF;
	    if (iotype != '-' && ret != -1 && fsetpos(fp,&pos) == -1) XSRETURN_UNDEF;
	    if (ret == -1) { set_errno(saverrno); set_vaxc_errno(savevmserrno); }
	    XSRETURN_YES;


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

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

void
rewind(fp)
	FILE *	fp
	PROTOTYPE: $
	CODE:
	    ST(0) = rewind(fp) ? &PL_sv_undef : &PL_sv_yes;

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)
	FILE *	fp
	PROTOTYPE: $
	CODE:
	    if (fsync(fileno(fp))) { ST(0) = &PL_sv_undef; }
	    else                   { clearerr(fp); ST(0) = &PL_sv_yes; }

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 = '<';
	    register int i, myargc;
	    FILE *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 != Nullfp) {
	      SV *fh = newFH(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;
	    FILE *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 &&
	       ((fp = fdopen(fd, &("r\000w\000r+"[2*i]))) != Nullfp)) {
	      SV *fh = newFH(fp,"<>++"[i]);
	      ST(0) = (fh ? sv_2mortal(fh) : &PL_sv_undef);
	    }
	    else { ST(0) = &PL_sv_undef; }

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

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$K_CLASS_S, devnam};
	    IO *io = sv_2io(mysv);
	    FILE *fp = io ? IoOFP(io) : NULL;
	    if (fp == NULL || strchr(">was+-|",IoTYPE(io)) == Nullch) {
	      set_errno(EBADF); set_vaxc_errno(SS$_IVCHAN); XSRETURN_UNDEF;
	    }
	    if (fgetname(fp,devnam) == Nullch) { 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	* Version: 2.2
	4	* Author: Charles Bailey bailey@newman.upenn.edu
	5	* Revised: 18-Jul-1998
748a9306	6	*
748a9306	7	*/
	8
	9	#include "EXTERN.h"
	10	#include "perl.h"
	11	#include "XSUB.h"
2ae00b68	12	#include <file.h>
17f28c40	13	#include <iodef.h>
	14	#include <rms.h>
	15	#include <starlet.h>
2ae00b68	16
	17	static bool
	18	constant(name, pval)
	19	char *name;
	20	IV *pval;
	21	{
	22	if (strnNE(name, "O_", 2)) return FALSE;
	23
	24	if (strEQ(name, "O_APPEND"))
	25	#ifdef O_APPEND
	26	{ *pval = O_APPEND; return TRUE; }
	27	#else
	28	return FALSE;
	29	#endif
	30	if (strEQ(name, "O_CREAT"))
	31	#ifdef O_CREAT
	32	{ *pval = O_CREAT; return TRUE; }
	33	#else
	34	return FALSE;
	35	#endif
	36	if (strEQ(name, "O_EXCL"))
	37	#ifdef O_EXCL
	38	{ *pval = O_EXCL; return TRUE; }
	39	#else
	40	return FALSE;
	41	#endif
	42	if (strEQ(name, "O_NDELAY"))
	43	#ifdef O_NDELAY
	44	{ *pval = O_NDELAY; return TRUE; }
	45	#else
	46	return FALSE;
	47	#endif
	48	if (strEQ(name, "O_NOWAIT"))
	49	#ifdef O_NOWAIT
	50	{ *pval = O_NOWAIT; return TRUE; }
	51	#else
	52	return FALSE;
	53	#endif
	54	if (strEQ(name, "O_RDONLY"))
	55	#ifdef O_RDONLY
	56	{ *pval = O_RDONLY; return TRUE; }
	57	#else
	58	return FALSE;
	59	#endif
	60	if (strEQ(name, "O_RDWR"))
	61	#ifdef O_RDWR
	62	{ *pval = O_RDWR; return TRUE; }
	63	#else
	64	return FALSE;
	65	#endif
	66	if (strEQ(name, "O_TRUNC"))
	67	#ifdef O_TRUNC
	68	{ *pval = O_TRUNC; return TRUE; }
	69	#else
	70	return FALSE;
	71	#endif
	72	if (strEQ(name, "O_WRONLY"))
	73	#ifdef O_WRONLY
	74	{ *pval = O_WRONLY; return TRUE; }
	75	#else
	76	return FALSE;
	77	#endif
	78
	79	return FALSE;
80	}
748a9306	81
748a9306	82
2ae00b68	83	static SV *
2ae00b68	84	newFH(FILE *fp, char type) {
55497cff	85	SV *rv;
55497cff	86	GV *stashp, gv = (GV *)NEWSV(0,0);
2ae00b68	87	HV *stash;
	88	IO *io;
	89
	90	/* Find stash for VMS::Stdio. We don't do this once at boot
	91	* to allow for possibility of threaded Perl with per-thread
	92	* symbol tables. This code (through io = ...) is really
	93	* equivalent to gv_fetchpv("VMS::Stdio::__FH__",TRUE,SVt_PVIO),
	94	* with a little less overhead, and good exercise for me. :-) */
6b88bc9c	95	stashp = (GV **)hv_fetch(PL_defstash,"VMS::",5,TRUE);
6b88bc9c	96	if (!stashp \|\| stashp == (GV )&PL_sv_undef) return Nullsv;
2ae00b68	97	if (!(stash = GvHV(stashp))) stash = GvHV(stashp) = newHV();
2ae00b68	98	stashp = (GV *)hv_fetch(GvHV(stashp),"Stdio::",7,TRUE);
6b88bc9c	99	if (!stashp \|\| stashp == (GV )&PL_sv_undef) return Nullsv;
2ae00b68	100	if (!(stash = GvHV(stashp))) stash = GvHV(stashp) = newHV();
	101
	102	/* Set up GV to point to IO, and then take reference */
	103	gv_init(gv,stash,"__FH__",6,0);
	104	io = GvIOp(gv) = newIO();
	105	IoIFP(io) = fp;
5f05dabc	106	if (type != '<') IoOFP(io) = fp;
2ae00b68	107	IoTYPE(io) = type;
55497cff	108	rv = newRV((SV *)gv);
2ae00b68	109	SvREFCNT_dec(gv);
	110	return sv_bless(rv,stash);
	111	}
	112
	113	MODULE = VMS::Stdio PACKAGE = VMS::Stdio
748a9306	114
748a9306	115	void
2ae00b68	116	constant(name)
748a9306	117	char * name
2ae00b68	118	PROTOTYPE: $
	119	CODE:
	120	IV i;
	121	if (constant(name, &i))
	122	ST(0) = sv_2mortal(newSViv(i));
	123	else
6b88bc9c	124	ST(0) = &PL_sv_undef;
2ae00b68	125
2ae00b68	126	void
562a7b0c	127	binmode(fh)
	128	SV * fh
	129	PROTOTYPE: $
	130	CODE:
	131	IO *io = sv_2io(fh);
	132	FILE *fp = io ? IoOFP(io) : NULL;
	133	char iotype = io ? IoTYPE(io) : '\0';
	134	char filespec[NAM$C_MAXRSS], acmode, s, colon, dirend = Nullch;
	135	int ret = 0, saverrno = errno, savevmserrno = vaxc$errno;
	136	fpos_t pos;
	137	if (fp == NULL \|\| strchr(">was+-\|",iotype) == Nullch) {
	138	set_errno(EBADF); set_vaxc_errno(SS$_IVCHAN); XSRETURN_UNDEF;
	139	}
	140	if (!fgetname(fp,filespec)) XSRETURN_UNDEF;
	141	for (s = filespec; *s; s++) {
	142	if (*s == ':') colon = s;
	143	else if (s == ']' \|\| s == '>') dirend = s;
	144	}
	145	/* Looks like a tmpfile, which will go away if reopened */
	146	if (s == dirend + 3) {
	147	set_errno(EBADF); set_vaxc_errno(RMS$_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. */
	151	if (dirend == Nullch) *(colon+1) = '\0';
	152	if (iotype != '-' && (ret = fgetpos(fp, &pos)) == -1 && dirend)
	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;
	161	case '-': acmode = fileno(fp) ? "ab" : "rb"; break;
	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	}
	171	if (freopen(filespec,acmode,fp) == NULL) XSRETURN_UNDEF;
	172	if (iotype != '-' && ret != -1 && fsetpos(fp,&pos) == -1) XSRETURN_UNDEF;
	173	if (ret == -1) { set_errno(saverrno); set_vaxc_errno(savevmserrno); }
	174	XSRETURN_YES;
	175
	176
	177	void
17f28c40	178	flush(fp)
17f28c40	179	FILE * fp
2ae00b68	180	PROTOTYPE: $
2ae00b68	181	CODE:
6b88bc9c	182	if (fflush(fp)) { ST(0) = &PL_sv_undef; }
6b88bc9c	183	else { clearerr(fp); ST(0) = &PL_sv_yes; }
2ae00b68	184
	185	char *
	186	getname(fp)
	187	FILE * fp
	188	PROTOTYPE: $
	189	CODE:
17f28c40	190	char fname[NAM$C_MAXRSS+1];
2ae00b68	191	ST(0) = sv_newmortal();
	192	if (fgetname(fp,fname) != NULL) sv_setpv(ST(0),fname);
	193
	194	void
	195	rewind(fp)
	196	FILE * fp
	197	PROTOTYPE: $
	198	CODE:
6b88bc9c	199	ST(0) = rewind(fp) ? &PL_sv_undef : &PL_sv_yes;
2ae00b68	200
	201	void
	202	remove(name)
	203	char *name
	204	PROTOTYPE: $
	205	CODE:
6b88bc9c	206	ST(0) = remove(name) ? &PL_sv_undef : &PL_sv_yes;
2ae00b68	207
2ae00b68	208	void
17f28c40	209	setdef(...)
	210	PROTOTYPE: @
	211	CODE:
	212	char vmsdef[NAM$C_MAXRSS+1], es[NAM$C_MAXRSS], sep;
	213	unsigned long int retsts;
	214	struct FAB deffab = cc$rms_fab;
	215	struct NAM defnam = cc$rms_nam;
	216	struct dsc$descriptor_s dirdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2d8e6c8d	217	STRLEN n_a;
17f28c40	218	if (items) {
17f28c40	219	SV defsv = ST(items-1); / mimic chdir() */
6b88bc9c	220	ST(0) = &PL_sv_undef;
17f28c40	221	if (!SvPOK(defsv)) { SETERRNO(EINVAL,LIB$_INVARG); XSRETURN(1); }
2d8e6c8d	222	if (tovmsspec(SvPV(defsv,n_a),vmsdef) == NULL) { XSRETURN(1); }
17f28c40	223	deffab.fab$l_fna = vmsdef; deffab.fab$b_fns = strlen(vmsdef);
	224	}
	225	else {
	226	deffab.fab$l_fna = "SYS$LOGIN"; deffab.fab$b_fns = 9;
6b88bc9c	227	EXTEND(sp,1); ST(0) = &PL_sv_undef;
17f28c40	228	}
	229	defnam.nam$l_esa = es; defnam.nam$b_ess = sizeof es;
	230	deffab.fab$l_nam = &defnam;
	231	retsts = sys$parse(&deffab,0,0);
	232	if (retsts & 1) {
	233	if (defnam.nam$v_wildcard) retsts = RMS$_WLD;
	234	else if (defnam.nam$b_name \|\| defnam.nam$b_type > 1 \|\|
	235	defnam.nam$b_ver > 1) retsts = RMS$_DIR;
	236	}
	237	defnam.nam$b_nop \|= NAM$M_SYNCHK; defnam.nam$l_rlf = NULL; deffab.fab$b_dns = 0;
	238	if (!(retsts & 1)) {
	239	set_vaxc_errno(retsts);
	240	switch (retsts) {
	241	case RMS$_DNF:
	242	set_errno(ENOENT); break;
	243	case RMS$_SYN: case RMS$_DIR: case RMS$_DEV:
	244	set_errno(EINVAL); break;
	245	case RMS$_PRV:
	246	set_errno(EACCES); break;
	247	default:
	248	set_errno(EVMSERR); break;
	249	}
	250	(void) sys$parse(&deffab,0,0); /* free up context */
	251	XSRETURN(1);
	252	}
	253	sep = *defnam.nam$l_dir;
	254	*defnam.nam$l_dir = '\0';
	255	my_setenv("SYS$DISK",defnam.nam$b_node ? defnam.nam$l_node : defnam.nam$l_dev);
	256	*defnam.nam$l_dir = sep;
	257	dirdsc.dsc$a_pointer = defnam.nam$l_dir; dirdsc.dsc$w_length = defnam.nam$b_dir;
6b88bc9c	258	if ((retsts = sys$setddir(&dirdsc,0,0)) & 1) ST(0) = &PL_sv_yes;
17f28c40	259	else { set_errno(EVMSERR); set_vaxc_errno(retsts); }
	260	(void) sys$parse(&deffab,0,0); /* free up context */
	261
	262	void
2ae00b68	263	sync(fp)
	264	FILE * fp
	265	PROTOTYPE: $
	266	CODE:
6b88bc9c	267	if (fsync(fileno(fp))) { ST(0) = &PL_sv_undef; }
6b88bc9c	268	else { clearerr(fp); ST(0) = &PL_sv_yes; }
2ae00b68	269
	270	char *
	271	tmpnam()
	272	PROTOTYPE:
	273	CODE:
	274	char fname[L_tmpnam];
	275	ST(0) = sv_newmortal();
	276	if (tmpnam(fname) != NULL) sv_setpv(ST(0),fname);
	277
	278	void
	279	vmsopen(spec,...)
	280	char * spec
	281	PROTOTYPE: @
748a9306	282	CODE:
2ae00b68	283	char *args[8],mode[3] = {'r','\0','\0'}, type = '<';
748a9306	284	register int i, myargc;
748a9306	285	FILE *fp;
2d8e6c8d	286	STRLEN n_a;
2ae00b68	287
	288	if (!spec \|\| !*spec) {
	289	SETERRNO(EINVAL,LIB$_INVARG);
	290	XSRETURN_UNDEF;
748a9306	291	}
2ae00b68	292	if (items > 9) croak("too many args");
2ae00b68	293
748a9306	294	/* First, set up name and mode args from perl's string */
2ae00b68	295	if (*spec == '+') {
748a9306	296	mode[1] = '+';
2ae00b68	297	spec++;
748a9306	298	}
2ae00b68	299	if (*spec == '>') {
	300	if ((spec+1) == '>') mode = 'a', spec += 2;
	301	else *mode = 'w', spec++;
748a9306	302	}
2ae00b68	303	else if (*spec == '<') spec++;
748a9306	304	myargc = items - 1;
2d8e6c8d	305	for (i = 0; i < myargc; i++) args[i] = SvPV(ST(i+1),n_a);
748a9306	306	/* This hack brought to you by C's opaque arglist management */
	307	switch (myargc) {
	308	case 0:
2ae00b68	309	fp = fopen(spec,mode);
748a9306	310	break;
748a9306	311	case 1:
2ae00b68	312	fp = fopen(spec,mode,args[0]);
748a9306	313	break;
748a9306	314	case 2:
2ae00b68	315	fp = fopen(spec,mode,args[0],args[1]);
748a9306	316	break;
748a9306	317	case 3:
2ae00b68	318	fp = fopen(spec,mode,args[0],args[1],args[2]);
748a9306	319	break;
748a9306	320	case 4:
2ae00b68	321	fp = fopen(spec,mode,args[0],args[1],args[2],args[3]);
748a9306	322	break;
748a9306	323	case 5:
2ae00b68	324	fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4]);
748a9306	325	break;
748a9306	326	case 6:
2ae00b68	327	fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5]);
748a9306	328	break;
748a9306	329	case 7:
2ae00b68	330	fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
748a9306	331	break;
748a9306	332	case 8:
2ae00b68	333	fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
748a9306	334	break;
748a9306	335	}
2ae00b68	336	if (fp != Nullfp) {
5f05dabc	337	SV *fh = newFH(fp,(mode[1] ? '+' : (mode[0] == 'r' ? '<' : (mode[0] == 'a' ? 'a' : '>'))));
6b88bc9c	338	ST(0) = (fh ? sv_2mortal(fh) : &PL_sv_undef);
748a9306	339	}
6b88bc9c	340	else { ST(0) = &PL_sv_undef; }
748a9306	341
2ae00b68	342	void
	343	vmssysopen(spec,mode,perm,...)
	344	char * spec
	345	int mode
	346	int perm
	347	PROTOTYPE: @
748a9306	348	CODE:
2ae00b68	349	char *args[8];
	350	int i, myargc, fd;
	351	FILE *fp;
	352	SV *fh;
2d8e6c8d	353	STRLEN n_a;
2ae00b68	354	if (!spec \|\| !*spec) {
	355	SETERRNO(EINVAL,LIB$_INVARG);
	356	XSRETURN_UNDEF;
	357	}
	358	if (items > 11) croak("too many args");
	359	myargc = items - 3;
2d8e6c8d	360	for (i = 0; i < myargc; i++) args[i] = SvPV(ST(i+3),n_a);
2ae00b68	361	/* More fun with C calls; can't combine with above because
	362	args 2,3 of different types in fopen() and open() */
	363	switch (myargc) {
	364	case 0:
	365	fd = open(spec,mode,perm);
	366	break;
	367	case 1:
	368	fd = open(spec,mode,perm,args[0]);
	369	break;
	370	case 2:
	371	fd = open(spec,mode,perm,args[0],args[1]);
	372	break;
	373	case 3:
	374	fd = open(spec,mode,perm,args[0],args[1],args[2]);
	375	break;
	376	case 4:
	377	fd = open(spec,mode,perm,args[0],args[1],args[2],args[3]);
	378	break;
	379	case 5:
	380	fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4]);
	381	break;
	382	case 6:
	383	fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5]);
	384	break;
	385	case 7:
	386	fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
	387	break;
	388	case 8:
	389	fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
	390	break;
	391	}
	392	i = mode & 3;
	393	if (fd >= 0 &&
	394	((fp = fdopen(fd, &("r\000w\000r+"[2*i]))) != Nullfp)) {
	395	SV *fh = newFH(fp,"<>++"[i]);
6b88bc9c	396	ST(0) = (fh ? sv_2mortal(fh) : &PL_sv_undef);
2ae00b68	397	}
6b88bc9c	398	else { ST(0) = &PL_sv_undef; }
748a9306	399
2ae00b68	400	void
	401	waitfh(fp)
	402	FILE * fp
	403	PROTOTYPE: $
748a9306	404	CODE:
6b88bc9c	405	ST(0) = fwait(fp) ? &PL_sv_undef : &PL_sv_yes;
17f28c40	406
	407	void
	408	writeof(mysv)
	409	SV * mysv
	410	PROTOTYPE: $
	411	CODE:
	412	char devnam[257], *cp;
	413	unsigned long int chan, iosb[2], retsts, retsts2;
	414	struct dsc$descriptor devdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, devnam};
	415	IO *io = sv_2io(mysv);
	416	FILE *fp = io ? IoOFP(io) : NULL;
	417	if (fp == NULL \|\| strchr(">was+-\|",IoTYPE(io)) == Nullch) {
562a7b0c	418	set_errno(EBADF); set_vaxc_errno(SS$_IVCHAN); XSRETURN_UNDEF;
17f28c40	419	}
6b88bc9c	420	if (fgetname(fp,devnam) == Nullch) { ST(0) = &PL_sv_undef; XSRETURN(1); }
17f28c40	421	if ((cp = strrchr(devnam,':')) != NULL) *(cp+1) = '\0';
	422	devdsc.dsc$w_length = strlen(devnam);
	423	retsts = sys$assign(&devdsc,&chan,0,0);
	424	if (retsts & 1) retsts = sys$qiow(0,chan,IO$_WRITEOF,iosb,0,0,0,0,0,0,0,0);
	425	if (retsts & 1) retsts = iosb[0];
	426	retsts2 = sys$dassgn(chan); /* Be sure to deassign the channel */
	427	if (retsts & 1) retsts = retsts2;
6b88bc9c	428	if (retsts & 1) { ST(0) = &PL_sv_yes; }
17f28c40	429	else {
	430	set_vaxc_errno(retsts);
	431	switch (retsts) {
	432	case SS$_EXQUOTA: case SS$_INSFMEM: case SS$_MBFULL:
	433	case SS$_MBTOOSML: case SS$_NOIOCHAN: case SS$_NOLINKS:
	434	case SS$_BUFFEROVF:
	435	set_errno(ENOSPC); break;
	436	case SS$_ILLIOFUNC: case SS$_DEVOFFLINE: case SS$_NOSUCHDEV:
	437	set_errno(EBADF); break;
	438	case SS$_NOPRIV:
	439	set_errno(EACCES); break;
	440	default: /* Includes "shouldn't happen" cases that might map */
	441	set_errno(EVMSERR); break; /* to other errno values */
	442	}
6b88bc9c	443	ST(0) = &PL_sv_undef;
17f28c40	444	}