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1 | /* |
2 | * Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved. |
3 | * This program is free software; you can redistribute it and/or |
4 | * modify it under the same terms as Perl itself. |
5 | */ |
6 | |
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7 | #include "EXTERN.h" |
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8 | #define PERLIO_NOT_STDIO 1 |
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9 | #include "perl.h" |
10 | #include "XSUB.h" |
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11 | #include "poll.h" |
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12 | #ifdef I_UNISTD |
13 | # include <unistd.h> |
14 | #endif |
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15 | #if defined(I_FCNTL) || defined(HAS_FCNTL) |
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16 | # include <fcntl.h> |
17 | #endif |
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18 | |
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19 | #ifdef PerlIO |
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20 | typedef int SysRet; |
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21 | typedef PerlIO * InputStream; |
22 | typedef PerlIO * OutputStream; |
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23 | #else |
24 | #define PERLIO_IS_STDIO 1 |
25 | typedef int SysRet; |
26 | typedef FILE * InputStream; |
27 | typedef FILE * OutputStream; |
28 | #endif |
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29 | |
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30 | #define MY_start_subparse(fmt,flags) start_subparse(fmt,flags) |
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31 | |
32 | #ifndef gv_stashpvn |
33 | #define gv_stashpvn(str,len,flags) gv_stashpv(str,flags) |
34 | #endif |
35 | |
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36 | static int |
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37 | not_here(char *s) |
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38 | { |
39 | croak("%s not implemented on this architecture", s); |
40 | return -1; |
41 | } |
42 | |
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43 | |
44 | #ifndef PerlIO |
45 | #define PerlIO_fileno(f) fileno(f) |
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46 | #endif |
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47 | |
48 | static int |
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49 | io_blocking(InputStream f, int block) |
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50 | { |
51 | int RETVAL; |
52 | if(!f) { |
53 | errno = EBADF; |
54 | return -1; |
55 | } |
56 | #if defined(HAS_FCNTL) |
57 | RETVAL = fcntl(PerlIO_fileno(f), F_GETFL, 0); |
58 | if (RETVAL >= 0) { |
59 | int mode = RETVAL; |
60 | #ifdef O_NONBLOCK |
61 | /* POSIX style */ |
62 | #if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK |
63 | /* Ooops has O_NDELAY too - make sure we don't |
64 | * get SysV behaviour by mistake |
65 | */ |
66 | RETVAL = RETVAL & O_NONBLOCK ? 0 : 1; |
67 | |
68 | if ((mode & O_NDELAY) || ((block == 0) && !(mode & O_NONBLOCK))) { |
69 | int ret; |
70 | mode = (mode & ~O_NDELAY) | O_NONBLOCK; |
71 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
72 | if(ret < 0) |
73 | RETVAL = ret; |
74 | } |
75 | else if ((mode & O_NDELAY) || ((block > 0) && (mode & O_NONBLOCK))) { |
76 | int ret; |
77 | mode &= ~(O_NONBLOCK | O_NDELAY); |
78 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
79 | if(ret < 0) |
80 | RETVAL = ret; |
81 | } |
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82 | #else |
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83 | /* Standard POSIX */ |
84 | RETVAL = RETVAL & O_NONBLOCK ? 0 : 1; |
85 | |
86 | if ((block == 0) && !(mode & O_NONBLOCK)) { |
87 | int ret; |
88 | mode |= O_NONBLOCK; |
89 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
90 | if(ret < 0) |
91 | RETVAL = ret; |
92 | } |
93 | else if ((block > 0) && (mode & O_NONBLOCK)) { |
94 | int ret; |
95 | mode &= ~O_NONBLOCK; |
96 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
97 | if(ret < 0) |
98 | RETVAL = ret; |
99 | } |
100 | #endif |
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101 | #else |
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102 | /* Not POSIX - better have O_NDELAY or we can't cope. |
103 | * for BSD-ish machines this is an acceptable alternative |
104 | * for SysV we can't tell "would block" from EOF but that is |
105 | * the way SysV is... |
106 | */ |
107 | RETVAL = RETVAL & O_NDELAY ? 0 : 1; |
108 | |
109 | if ((block == 0) && !(mode & O_NDELAY)) { |
110 | int ret; |
111 | mode |= O_NDELAY; |
112 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
113 | if(ret < 0) |
114 | RETVAL = ret; |
115 | } |
116 | else if ((block > 0) && (mode & O_NDELAY)) { |
117 | int ret; |
118 | mode &= ~O_NDELAY; |
119 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
120 | if(ret < 0) |
121 | RETVAL = ret; |
122 | } |
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123 | #endif |
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124 | } |
125 | return RETVAL; |
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126 | #else |
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127 | return -1; |
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128 | #endif |
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129 | } |
130 | |
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131 | MODULE = IO PACKAGE = IO::Seekable PREFIX = f |
132 | |
133 | SV * |
134 | fgetpos(handle) |
135 | InputStream handle |
136 | CODE: |
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137 | if (handle) { |
138 | Fpos_t pos; |
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139 | #ifdef PerlIO |
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140 | PerlIO_getpos(handle, &pos); |
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141 | #else |
142 | fgetpos(handle, &pos); |
143 | #endif |
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144 | ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t))); |
145 | } |
146 | else { |
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147 | ST(0) = &PL_sv_undef; |
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148 | errno = EINVAL; |
149 | } |
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150 | |
151 | SysRet |
152 | fsetpos(handle, pos) |
153 | InputStream handle |
154 | SV * pos |
155 | CODE: |
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156 | char *p; |
157 | STRLEN len; |
158 | if (handle && (p = SvPV(pos,len)) && len == sizeof(Fpos_t)) |
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159 | #ifdef PerlIO |
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160 | RETVAL = PerlIO_setpos(handle, (Fpos_t*)p); |
2a0cf753 |
161 | #else |
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162 | RETVAL = fsetpos(handle, (Fpos_t*)p); |
2a0cf753 |
163 | #endif |
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164 | else { |
165 | RETVAL = -1; |
166 | errno = EINVAL; |
167 | } |
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168 | OUTPUT: |
169 | RETVAL |
170 | |
171 | MODULE = IO PACKAGE = IO::File PREFIX = f |
172 | |
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173 | SV * |
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174 | new_tmpfile(packname = "IO::File") |
175 | char * packname |
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176 | PREINIT: |
177 | OutputStream fp; |
178 | GV *gv; |
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179 | CODE: |
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180 | #ifdef PerlIO |
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181 | fp = PerlIO_tmpfile(); |
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182 | #else |
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183 | fp = tmpfile(); |
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184 | #endif |
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185 | gv = (GV*)SvREFCNT_inc(newGVgen(packname)); |
186 | hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD); |
187 | if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) { |
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188 | ST(0) = sv_2mortal(newRV((SV*)gv)); |
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189 | sv_bless(ST(0), gv_stashpv(packname, TRUE)); |
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190 | SvREFCNT_dec(gv); /* undo increment in newRV() */ |
a375a877 |
191 | } |
192 | else { |
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193 | ST(0) = &PL_sv_undef; |
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194 | SvREFCNT_dec(gv); |
195 | } |
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196 | |
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197 | MODULE = IO PACKAGE = IO::Poll |
198 | |
199 | void |
200 | _poll(timeout,...) |
201 | int timeout; |
202 | PPCODE: |
203 | { |
204 | #ifdef HAS_POLL |
205 | int nfd = (items - 1) / 2; |
206 | SV *tmpsv = NEWSV(999,nfd * sizeof(struct pollfd)); |
207 | struct pollfd *fds = (struct pollfd *)SvPVX(tmpsv); |
208 | int i,j,ret; |
209 | for(i=1, j=0 ; j < nfd ; j++) { |
210 | fds[j].fd = SvIV(ST(i)); |
211 | i++; |
212 | fds[j].events = SvIV(ST(i)); |
213 | i++; |
214 | fds[j].revents = 0; |
215 | } |
216 | if((ret = poll(fds,nfd,timeout)) >= 0) { |
217 | for(i=1, j=0 ; j < nfd ; j++) { |
218 | sv_setiv(ST(i), fds[j].fd); i++; |
219 | sv_setiv(ST(i), fds[j].revents); i++; |
220 | } |
221 | } |
222 | SvREFCNT_dec(tmpsv); |
223 | XSRETURN_IV(ret); |
224 | #else |
225 | not_here("IO::Poll::poll"); |
226 | #endif |
227 | } |
228 | |
229 | MODULE = IO PACKAGE = IO::Handle PREFIX = io_ |
230 | |
231 | void |
232 | io_blocking(handle,blk=-1) |
233 | InputStream handle |
234 | int blk |
235 | PROTOTYPE: $;$ |
236 | CODE: |
237 | { |
238 | int ret = io_blocking(handle, items == 1 ? -1 : blk ? 1 : 0); |
239 | if(ret >= 0) |
240 | XSRETURN_IV(ret); |
241 | else |
242 | XSRETURN_UNDEF; |
243 | } |
244 | |
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245 | MODULE = IO PACKAGE = IO::Handle PREFIX = f |
246 | |
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247 | |
248 | int |
249 | ungetc(handle, c) |
250 | InputStream handle |
251 | int c |
252 | CODE: |
253 | if (handle) |
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254 | #ifdef PerlIO |
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255 | RETVAL = PerlIO_ungetc(handle, c); |
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256 | #else |
257 | RETVAL = ungetc(c, handle); |
258 | #endif |
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259 | else { |
260 | RETVAL = -1; |
261 | errno = EINVAL; |
262 | } |
263 | OUTPUT: |
264 | RETVAL |
265 | |
266 | int |
267 | ferror(handle) |
268 | InputStream handle |
269 | CODE: |
270 | if (handle) |
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271 | #ifdef PerlIO |
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272 | RETVAL = PerlIO_error(handle); |
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273 | #else |
274 | RETVAL = ferror(handle); |
275 | #endif |
276 | else { |
277 | RETVAL = -1; |
278 | errno = EINVAL; |
279 | } |
280 | OUTPUT: |
281 | RETVAL |
282 | |
283 | int |
284 | clearerr(handle) |
285 | InputStream handle |
286 | CODE: |
287 | if (handle) { |
288 | #ifdef PerlIO |
289 | PerlIO_clearerr(handle); |
290 | #else |
291 | clearerr(handle); |
292 | #endif |
293 | RETVAL = 0; |
294 | } |
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295 | else { |
296 | RETVAL = -1; |
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297 | errno = EINVAL; |
298 | } |
299 | OUTPUT: |
300 | RETVAL |
301 | |
302 | int |
303 | untaint(handle) |
304 | SV * handle |
305 | CODE: |
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306 | #ifdef IOf_UNTAINT |
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307 | IO * io; |
308 | io = sv_2io(handle); |
309 | if (io) { |
310 | IoFLAGS(io) |= IOf_UNTAINT; |
311 | RETVAL = 0; |
312 | } |
313 | else { |
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314 | #endif |
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315 | RETVAL = -1; |
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316 | errno = EINVAL; |
7a4c00b4 |
317 | #ifdef IOf_UNTAINT |
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318 | } |
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319 | #endif |
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320 | OUTPUT: |
321 | RETVAL |
322 | |
323 | SysRet |
324 | fflush(handle) |
325 | OutputStream handle |
326 | CODE: |
327 | if (handle) |
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328 | #ifdef PerlIO |
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329 | RETVAL = PerlIO_flush(handle); |
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330 | #else |
331 | RETVAL = Fflush(handle); |
332 | #endif |
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333 | else { |
334 | RETVAL = -1; |
335 | errno = EINVAL; |
336 | } |
337 | OUTPUT: |
338 | RETVAL |
339 | |
340 | void |
341 | setbuf(handle, buf) |
342 | OutputStream handle |
343 | char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), BUFSIZ) : 0; |
344 | CODE: |
345 | if (handle) |
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346 | #ifdef PERLIO_IS_STDIO |
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347 | setbuf(handle, buf); |
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348 | #else |
349 | not_here("IO::Handle::setbuf"); |
350 | #endif |
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351 | |
352 | SysRet |
353 | setvbuf(handle, buf, type, size) |
354 | OutputStream handle |
355 | char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0; |
356 | int type |
357 | int size |
358 | CODE: |
61839fa9 |
359 | /* Should check HAS_SETVBUF once Configure tests for that */ |
360 | #if defined(PERLIO_IS_STDIO) && defined(_IOFBF) |
d924de76 |
361 | if (!handle) /* Try input stream. */ |
362 | handle = IoIFP(sv_2io(ST(0))); |
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363 | if (handle) |
364 | RETVAL = setvbuf(handle, buf, type, size); |
365 | else { |
366 | RETVAL = -1; |
367 | errno = EINVAL; |
368 | } |
369 | #else |
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370 | RETVAL = (SysRet) not_here("IO::Handle::setvbuf"); |
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371 | #endif |
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372 | OUTPUT: |
373 | RETVAL |
374 | |
375 | |
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376 | SysRet |
377 | fsync(handle) |
378 | OutputStream handle |
379 | CODE: |
380 | #ifdef HAS_FSYNC |
381 | if(handle) |
382 | RETVAL = fsync(PerlIO_fileno(handle)); |
383 | else { |
384 | RETVAL = -1; |
385 | errno = EINVAL; |
386 | } |
387 | #else |
388 | RETVAL = (SysRet) not_here("IO::Handle::sync"); |
389 | #endif |
390 | OUTPUT: |
391 | RETVAL |
392 | |
393 | |
394 | BOOT: |
395 | { |
396 | HV *stash; |
397 | /* |
398 | * constant subs for IO::Poll |
399 | */ |
400 | stash = gv_stashpvn("IO::Poll", 8, TRUE); |
401 | #ifdef POLLIN |
402 | newCONSTSUB(stash,"POLLIN",newSViv(POLLIN)); |
403 | #endif |
404 | #ifdef POLLPRI |
405 | newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI)); |
406 | #endif |
407 | #ifdef POLLOUT |
408 | newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT)); |
409 | #endif |
410 | #ifdef POLLRDNORM |
411 | newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM)); |
412 | #endif |
413 | #ifdef POLLWRNORM |
414 | newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM)); |
415 | #endif |
416 | #ifdef POLLRDBAND |
417 | newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND)); |
418 | #endif |
419 | #ifdef POLLWRBAND |
420 | newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND)); |
421 | #endif |
422 | #ifdef POLLNORM |
423 | newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM)); |
424 | #endif |
425 | #ifdef POLLERR |
426 | newCONSTSUB(stash,"POLLERR", newSViv(POLLERR)); |
427 | #endif |
428 | #ifdef POLLHUP |
429 | newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP)); |
430 | #endif |
431 | #ifdef POLLNVAL |
432 | newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL)); |
433 | #endif |
434 | /* |
435 | * constant subs for IO::Handle |
436 | */ |
437 | stash = gv_stashpvn("IO::Handle", 10, TRUE); |
438 | #ifdef _IOFBF |
439 | newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF)); |
440 | #endif |
441 | #ifdef _IOLBF |
442 | newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF)); |
443 | #endif |
444 | #ifdef _IONBF |
445 | newCONSTSUB(stash,"_IONBF", newSViv(_IONBF)); |
446 | #endif |
447 | #ifdef SEEK_SET |
448 | newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET)); |
449 | #endif |
450 | #ifdef SEEK_CUR |
451 | newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR)); |
452 | #endif |
453 | #ifdef SEEK_END |
454 | newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END)); |
455 | #endif |
456 | /* |
457 | * constant subs for IO |
458 | */ |
459 | stash = gv_stashpvn("IO", 2, TRUE); |
460 | #ifdef EINPROGRESS |
461 | newCONSTSUB(stash,"EINPROGRESS", newSViv(EINPROGRESS)); |
462 | #endif |
463 | } |