[perl5.git] / ext / Fcntl / Fcntl.xs

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#ifdef VMS
#  include <file.h>
#else
#  include <fcntl.h>
#endif

/* This comment is a kludge to get metaconfig to see the symbols
    VAL_O_NONBLOCK
    VAL_EAGAIN
    RD_NODATA
    EOF_NONBLOCK
   and include the appropriate metaconfig unit
   so that Configure will test how to turn on non-blocking I/O
   for a file descriptor.  See config.h for how to use these
   in your extension. 
   
   While I'm at it, I'll have metaconfig look for HAS_POLL too.
   --AD  October 16, 1995
*/

static int
not_here(char *s)
{
    croak("%s not implemented on this architecture", s);
    return -1;
}

static double
constant(char *name, int arg)
{
    errno = 0;
    switch (*name) {
    case 'F':
	if (strnEQ(name, "F_", 2)) {
	    if (strEQ(name, "F_DUPFD"))
#ifdef F_DUPFD
	        return F_DUPFD;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_GETFD"))
#ifdef F_GETFD
	        return F_GETFD;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_GETLK"))
#ifdef F_GETLK
	        return F_GETLK;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_GETOWN"))
#ifdef F_GETOWN
	        return F_GETOWN;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_SETFD"))
#ifdef F_SETFD
	        return F_SETFD;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_GETFL"))
#ifdef F_GETFL
	        return F_GETFL;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_POSIX"))
#ifdef F_POSIX
	        return F_POSIX;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_SETFL"))
#ifdef F_SETFL
	        return F_SETFL;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_SETLK"))
#ifdef F_SETLK
	        return F_SETLK;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_SETLKW"))
#ifdef F_SETLKW
	        return F_SETLKW;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_SETOWN"))
#ifdef F_SETOWN
	        return F_SETOWN;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_RDLCK"))
#ifdef F_RDLCK
	        return F_RDLCK;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_UNLCK"))
#ifdef F_UNLCK
	        return F_UNLCK;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "F_WRLCK"))
#ifdef F_WRLCK
	        return F_WRLCK;
#else
	        goto not_there;
#endif
	    errno = EINVAL;
	    return 0;
	}
        if (strEQ(name, "FAPPEND"))
#ifdef FAPPEND
            return FAPPEND;
#else
            goto not_there;
#endif
        if (strEQ(name, "FASYNC"))
#ifdef FASYNC
            return FASYNC;
#else
            goto not_there;
#endif
        if (strEQ(name, "FCREAT"))
#ifdef FCREAT
            return FCREAT;
#else
            goto not_there;
#endif
	if (strEQ(name, "FD_CLOEXEC"))
#ifdef FD_CLOEXEC
	    return FD_CLOEXEC;
#else
	    goto not_there;
#endif
        if (strEQ(name, "FEXCL"))
#ifdef FEXCL
            return FEXCL;
#else
            goto not_there;
#endif
        if (strEQ(name, "FNDELAY"))
#ifdef FNDELAY
            return FNDELAY;
#else
            goto not_there;
#endif
        if (strEQ(name, "FNONBLOCK"))
#ifdef FNONBLOCK
            return FNONBLOCK;
#else
            goto not_there;
#endif
        if (strEQ(name, "FSYNC"))
#ifdef FSYNC
            return FSYNC;
#else
            goto not_there;
#endif
        if (strEQ(name, "FTRUNC"))
#ifdef FTRUNC
            return FTRUNC;
#else
            goto not_there;
#endif
	break;
    case 'L':
    	if (strnEQ(name, "LOCK_", 5)) {
	    /* We support flock() on systems which don't have it, so
	       always supply the constants. */
	    if (strEQ(name, "LOCK_SH"))
#ifdef LOCK_SH
		return LOCK_SH;
#else
		return 1;
#endif
	    if (strEQ(name, "LOCK_EX"))
#ifdef LOCK_EX
		return LOCK_EX;
#else
		return 2;
#endif
    	    if (strEQ(name, "LOCK_NB"))
#ifdef LOCK_NB
		return LOCK_NB;
#else
		return 4;
#endif
    	    if (strEQ(name, "LOCK_UN"))
#ifdef LOCK_UN
    	    	return LOCK_UN;
#else
    	    	return 8;
#endif
	} else
	  goto not_there;
    	break;
    case 'O':
	if (strnEQ(name, "O_", 2)) {
	    if (strEQ(name, "O_CREAT"))
#ifdef O_CREAT
	        return O_CREAT;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_EXCL"))
#ifdef O_EXCL
	        return O_EXCL;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_NOCTTY"))
#ifdef O_NOCTTY
	        return O_NOCTTY;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_TRUNC"))
#ifdef O_TRUNC
	        return O_TRUNC;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_APPEND"))
#ifdef O_APPEND
	        return O_APPEND;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_NONBLOCK"))
#ifdef O_NONBLOCK
	        return O_NONBLOCK;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_NDELAY"))
#ifdef O_NDELAY
	        return O_NDELAY;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_RDONLY"))
#ifdef O_RDONLY
	        return O_RDONLY;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_RDWR"))
#ifdef O_RDWR
	        return O_RDWR;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_WRONLY"))
#ifdef O_WRONLY
	        return O_WRONLY;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_BINARY"))
#ifdef O_BINARY
	        return O_BINARY;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_EXLOCK"))
#ifdef O_EXLOCK
	        return O_EXLOCK;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_SHLOCK"))
#ifdef O_SHLOCK
	        return O_SHLOCK;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_ASYNC"))
#ifdef O_ASYNC
	        return O_ASYNC;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_DSYNC"))
#ifdef O_DSYNC
	        return O_DSYNC;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_RSYNC"))
#ifdef O_RSYNC
	        return O_RSYNC;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_SYNC"))
#ifdef O_SYNC
	        return O_SYNC;
#else
	        goto not_there;
#endif
	    if (strEQ(name, "O_DEFER"))
#ifdef O_DEFER
	        return O_DEFER;
#else
	        goto not_there;
#endif
	} else
	  goto not_there;
	break;
    }
    errno = EINVAL;
    return 0;

not_there:
    errno = ENOENT;
    return 0;
}


MODULE = Fcntl		PACKAGE = Fcntl

double
constant(name,arg)
	char *		name
	int		arg
Commit	Line	Data
a0d0e21e LW	1	#include "EXTERN.h"
	2	#include "perl.h"
	3	#include "XSUB.h"
	4
75ced34b	5	#ifdef VMS
	6	# include <file.h>
	7	#else
	8	# include <fcntl.h>
	9	#endif
a0d0e21e	10
8e07c86e AD	11	/* This comment is a kludge to get metaconfig to see the symbols
	12	VAL_O_NONBLOCK
	13	VAL_EAGAIN
	14	RD_NODATA
	15	EOF_NONBLOCK
	16	and include the appropriate metaconfig unit
	17	so that Configure will test how to turn on non-blocking I/O
	18	for a file descriptor. See config.h for how to use these
	19	in your extension.
	20
	21	While I'm at it, I'll have metaconfig look for HAS_POLL too.
	22	--AD October 16, 1995
	23	*/
	24
a0d0e21e	25	static int
f0f333f4	26	not_here(char *s)
a0d0e21e LW	27	{
	28	croak("%s not implemented on this architecture", s);
	29	return -1;
	30	}
	31
	32	static double
f0f333f4	33	constant(char *name, int arg)
a0d0e21e LW	34	{
	35	errno = 0;
	36	switch (*name) {
	37	case 'F':
	38	if (strnEQ(name, "F_", 2)) {
	39	if (strEQ(name, "F_DUPFD"))
	40	#ifdef F_DUPFD
	41	return F_DUPFD;
	42	#else
	43	goto not_there;
	44	#endif
	45	if (strEQ(name, "F_GETFD"))
	46	#ifdef F_GETFD
	47	return F_GETFD;
	48	#else
	49	goto not_there;
	50	#endif
	51	if (strEQ(name, "F_GETLK"))
	52	#ifdef F_GETLK
	53	return F_GETLK;
	54	#else
	55	goto not_there;
	56	#endif
5f832ef3 JH	57	if (strEQ(name, "F_GETOWN"))
	58	#ifdef F_GETOWN
	59	return F_GETOWN;
	60	#else
	61	goto not_there;
	62	#endif
a0d0e21e LW	63	if (strEQ(name, "F_SETFD"))
	64	#ifdef F_SETFD
	65	return F_SETFD;
	66	#else
	67	goto not_there;
	68	#endif
	69	if (strEQ(name, "F_GETFL"))
	70	#ifdef F_GETFL
	71	return F_GETFL;
	72	#else
	73	goto not_there;
	74	#endif
3e3baf6d TB	75	if (strEQ(name, "F_POSIX"))
	76	#ifdef F_POSIX
	77	return F_POSIX;
	78	#else
	79	goto not_there;
	80	#endif
232e078e AD	81	if (strEQ(name, "F_SETFL"))
	82	#ifdef F_SETFL
	83	return F_SETFL;
a0d0e21e LW	84	#else
	85	goto not_there;
	86	#endif
	87	if (strEQ(name, "F_SETLK"))
	88	#ifdef F_SETLK
	89	return F_SETLK;
	90	#else
	91	goto not_there;
	92	#endif
	93	if (strEQ(name, "F_SETLKW"))
	94	#ifdef F_SETLKW
	95	return F_SETLKW;
	96	#else
	97	goto not_there;
	98	#endif
5f832ef3 JH	99	if (strEQ(name, "F_SETOWN"))
	100	#ifdef F_SETOWN
	101	return F_SETOWN;
	102	#else
	103	goto not_there;
	104	#endif
a0d0e21e LW	105	if (strEQ(name, "F_RDLCK"))
	106	#ifdef F_RDLCK
	107	return F_RDLCK;
	108	#else
	109	goto not_there;
	110	#endif
	111	if (strEQ(name, "F_UNLCK"))
	112	#ifdef F_UNLCK
	113	return F_UNLCK;
	114	#else
	115	goto not_there;
	116	#endif
	117	if (strEQ(name, "F_WRLCK"))
	118	#ifdef F_WRLCK
	119	return F_WRLCK;
	120	#else
	121	goto not_there;
	122	#endif
	123	errno = EINVAL;
	124	return 0;
3e3baf6d TB	125	}
	126	if (strEQ(name, "FAPPEND"))
	127	#ifdef FAPPEND
	128	return FAPPEND;
	129	#else
	130	goto not_there;
	131	#endif
	132	if (strEQ(name, "FASYNC"))
	133	#ifdef FASYNC
	134	return FASYNC;
	135	#else
	136	goto not_there;
	137	#endif
	138	if (strEQ(name, "FCREAT"))
	139	#ifdef FCREAT
	140	return FCREAT;
	141	#else
	142	goto not_there;
	143	#endif
	144	if (strEQ(name, "FD_CLOEXEC"))
a0d0e21e LW	145	#ifdef FD_CLOEXEC
	146	return FD_CLOEXEC;
	147	#else
	148	goto not_there;
	149	#endif
3e3baf6d TB	150	if (strEQ(name, "FEXCL"))
	151	#ifdef FEXCL
	152	return FEXCL;
	153	#else
	154	goto not_there;
	155	#endif
	156	if (strEQ(name, "FNDELAY"))
	157	#ifdef FNDELAY
	158	return FNDELAY;
	159	#else
	160	goto not_there;
	161	#endif
	162	if (strEQ(name, "FNONBLOCK"))
	163	#ifdef FNONBLOCK
	164	return FNONBLOCK;
	165	#else
	166	goto not_there;
	167	#endif
	168	if (strEQ(name, "FSYNC"))
	169	#ifdef FSYNC
	170	return FSYNC;
	171	#else
	172	goto not_there;
	173	#endif
	174	if (strEQ(name, "FTRUNC"))
	175	#ifdef FTRUNC
	176	return FTRUNC;
	177	#else
	178	goto not_there;
	179	#endif
a0d0e21e	180	break;
7e1af8bc	181	case 'L':
	182	if (strnEQ(name, "LOCK_", 5)) {
	183	/* We support flock() on systems which don't have it, so
	184	always supply the constants. */
	185	if (strEQ(name, "LOCK_SH"))
	186	#ifdef LOCK_SH
	187	return LOCK_SH;
	188	#else
	189	return 1;
	190	#endif
	191	if (strEQ(name, "LOCK_EX"))
	192	#ifdef LOCK_EX
	193	return LOCK_EX;
	194	#else
	195	return 2;
	196	#endif
	197	if (strEQ(name, "LOCK_NB"))
	198	#ifdef LOCK_NB
	199	return LOCK_NB;
	200	#else
	201	return 4;
	202	#endif
	203	if (strEQ(name, "LOCK_UN"))
	204	#ifdef LOCK_UN
	205	return LOCK_UN;
	206	#else
	207	return 8;
	208	#endif
	209	} else
	210	goto not_there;
	211	break;
a0d0e21e LW	212	case 'O':
	213	if (strnEQ(name, "O_", 2)) {
	214	if (strEQ(name, "O_CREAT"))
	215	#ifdef O_CREAT
	216	return O_CREAT;
	217	#else
	218	goto not_there;
	219	#endif
	220	if (strEQ(name, "O_EXCL"))
	221	#ifdef O_EXCL
	222	return O_EXCL;
	223	#else
	224	goto not_there;
	225	#endif
	226	if (strEQ(name, "O_NOCTTY"))
	227	#ifdef O_NOCTTY
	228	return O_NOCTTY;
	229	#else
	230	goto not_there;
	231	#endif
	232	if (strEQ(name, "O_TRUNC"))
	233	#ifdef O_TRUNC
	234	return O_TRUNC;
	235	#else
	236	goto not_there;
	237	#endif
	238	if (strEQ(name, "O_APPEND"))
	239	#ifdef O_APPEND
	240	return O_APPEND;
	241	#else
	242	goto not_there;
	243	#endif
	244	if (strEQ(name, "O_NONBLOCK"))
	245	#ifdef O_NONBLOCK
	246	return O_NONBLOCK;
	247	#else
	248	goto not_there;
	249	#endif
	250	if (strEQ(name, "O_NDELAY"))
	251	#ifdef O_NDELAY
	252	return O_NDELAY;
	253	#else
	254	goto not_there;
	255	#endif
	256	if (strEQ(name, "O_RDONLY"))
	257	#ifdef O_RDONLY
	258	return O_RDONLY;
	259	#else
	260	goto not_there;
	261	#endif
	262	if (strEQ(name, "O_RDWR"))
	263	#ifdef O_RDWR
	264	return O_RDWR;
	265	#else
	266	goto not_there;
	267	#endif
	268	if (strEQ(name, "O_WRONLY"))
	269	#ifdef O_WRONLY
	270	return O_WRONLY;
	271	#else
	272	goto not_there;
	273	#endif
4633a7c4 LW	274	if (strEQ(name, "O_BINARY"))
	275	#ifdef O_BINARY
	276	return O_BINARY;
	277	#else
	278	goto not_there;
	279	#endif
705af498 JH	280	if (strEQ(name, "O_EXLOCK"))
	281	#ifdef O_EXLOCK
	282	return O_EXLOCK;
	283	#else
	284	goto not_there;
	285	#endif
	286	if (strEQ(name, "O_SHLOCK"))
	287	#ifdef O_SHLOCK
	288	return O_SHLOCK;
	289	#else
	290	goto not_there;
	291	#endif
	292	if (strEQ(name, "O_ASYNC"))
	293	#ifdef O_ASYNC
	294	return O_ASYNC;
	295	#else
	296	goto not_there;
	297	#endif
	298	if (strEQ(name, "O_DSYNC"))
	299	#ifdef O_DSYNC
	300	return O_DSYNC;
	301	#else
	302	goto not_there;
	303	#endif
	304	if (strEQ(name, "O_RSYNC"))
	305	#ifdef O_RSYNC
	306	return O_RSYNC;
	307	#else
	308	goto not_there;
	309	#endif
	310	if (strEQ(name, "O_SYNC"))
	311	#ifdef O_SYNC
	312	return O_SYNC;
	313	#else
	314	goto not_there;
	315	#endif
705af498 JH	316	if (strEQ(name, "O_DEFER"))
	317	#ifdef O_DEFER
	318	return O_DEFER;
	319	#else
	320	goto not_there;
	321	#endif
a0d0e21e LW	322	} else
	323	goto not_there;
	324	break;
	325	}
	326	errno = EINVAL;
	327	return 0;
	328
	329	not_there:
	330	errno = ENOENT;
	331	return 0;
	332	}
	333
	334
	335	MODULE = Fcntl PACKAGE = Fcntl
	336
	337	double
	338	constant(name,arg)
	339	char * name
	340	int arg
	341