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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 | #define PERL_NO_GET_CONTEXT |
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8 | #include "EXTERN.h" |
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9 | #define PERLIO_NOT_STDIO 1 |
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10 | #include "perl.h" |
11 | #include "XSUB.h" |
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12 | #include "poll.h" |
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13 | #ifdef I_UNISTD |
14 | # include <unistd.h> |
15 | #endif |
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16 | #if defined(I_FCNTL) || defined(HAS_FCNTL) |
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17 | # include <fcntl.h> |
18 | #endif |
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19 | |
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20 | #ifdef PerlIO |
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21 | typedef int SysRet; |
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22 | typedef PerlIO * InputStream; |
23 | typedef PerlIO * OutputStream; |
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24 | #else |
25 | #define PERLIO_IS_STDIO 1 |
26 | typedef int SysRet; |
27 | typedef FILE * InputStream; |
28 | typedef FILE * OutputStream; |
29 | #endif |
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30 | |
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31 | #define MY_start_subparse(fmt,flags) start_subparse(fmt,flags) |
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32 | |
33 | #ifndef gv_stashpvn |
34 | #define gv_stashpvn(str,len,flags) gv_stashpv(str,flags) |
35 | #endif |
36 | |
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37 | static int |
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38 | not_here(char *s) |
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39 | { |
40 | croak("%s not implemented on this architecture", s); |
41 | return -1; |
42 | } |
43 | |
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44 | |
45 | #ifndef PerlIO |
46 | #define PerlIO_fileno(f) fileno(f) |
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47 | #endif |
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48 | |
49 | static int |
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50 | io_blocking(InputStream f, int block) |
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51 | { |
52 | int RETVAL; |
53 | if(!f) { |
54 | errno = EBADF; |
55 | return -1; |
56 | } |
57 | #if defined(HAS_FCNTL) |
58 | RETVAL = fcntl(PerlIO_fileno(f), F_GETFL, 0); |
59 | if (RETVAL >= 0) { |
60 | int mode = RETVAL; |
61 | #ifdef O_NONBLOCK |
62 | /* POSIX style */ |
63 | #if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK |
64 | /* Ooops has O_NDELAY too - make sure we don't |
65 | * get SysV behaviour by mistake |
66 | */ |
67 | RETVAL = RETVAL & O_NONBLOCK ? 0 : 1; |
68 | |
69 | if ((mode & O_NDELAY) || ((block == 0) && !(mode & O_NONBLOCK))) { |
70 | int ret; |
71 | mode = (mode & ~O_NDELAY) | O_NONBLOCK; |
72 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
73 | if(ret < 0) |
74 | RETVAL = ret; |
75 | } |
76 | else if ((mode & O_NDELAY) || ((block > 0) && (mode & O_NONBLOCK))) { |
77 | int ret; |
78 | mode &= ~(O_NONBLOCK | O_NDELAY); |
79 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
80 | if(ret < 0) |
81 | RETVAL = ret; |
82 | } |
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83 | #else |
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84 | /* Standard POSIX */ |
85 | RETVAL = RETVAL & O_NONBLOCK ? 0 : 1; |
86 | |
87 | if ((block == 0) && !(mode & O_NONBLOCK)) { |
88 | int ret; |
89 | mode |= O_NONBLOCK; |
90 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
91 | if(ret < 0) |
92 | RETVAL = ret; |
93 | } |
94 | else if ((block > 0) && (mode & O_NONBLOCK)) { |
95 | int ret; |
96 | mode &= ~O_NONBLOCK; |
97 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
98 | if(ret < 0) |
99 | RETVAL = ret; |
100 | } |
101 | #endif |
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102 | #else |
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103 | /* Not POSIX - better have O_NDELAY or we can't cope. |
104 | * for BSD-ish machines this is an acceptable alternative |
105 | * for SysV we can't tell "would block" from EOF but that is |
106 | * the way SysV is... |
107 | */ |
108 | RETVAL = RETVAL & O_NDELAY ? 0 : 1; |
109 | |
110 | if ((block == 0) && !(mode & O_NDELAY)) { |
111 | int ret; |
112 | mode |= O_NDELAY; |
113 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
114 | if(ret < 0) |
115 | RETVAL = ret; |
116 | } |
117 | else if ((block > 0) && (mode & O_NDELAY)) { |
118 | int ret; |
119 | mode &= ~O_NDELAY; |
120 | ret = fcntl(PerlIO_fileno(f),F_SETFL,mode); |
121 | if(ret < 0) |
122 | RETVAL = ret; |
123 | } |
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124 | #endif |
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125 | } |
126 | return RETVAL; |
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127 | #else |
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128 | return -1; |
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129 | #endif |
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130 | } |
131 | |
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132 | MODULE = IO PACKAGE = IO::Seekable PREFIX = f |
133 | |
134 | SV * |
135 | fgetpos(handle) |
136 | InputStream handle |
137 | CODE: |
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138 | if (handle) { |
139 | Fpos_t pos; |
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140 | #ifdef PerlIO |
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141 | PerlIO_getpos(handle, &pos); |
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142 | #else |
143 | fgetpos(handle, &pos); |
144 | #endif |
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145 | ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t))); |
146 | } |
147 | else { |
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148 | ST(0) = &PL_sv_undef; |
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149 | errno = EINVAL; |
150 | } |
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151 | |
152 | SysRet |
153 | fsetpos(handle, pos) |
154 | InputStream handle |
155 | SV * pos |
156 | CODE: |
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157 | char *p; |
158 | STRLEN len; |
159 | if (handle && (p = SvPV(pos,len)) && len == sizeof(Fpos_t)) |
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160 | #ifdef PerlIO |
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161 | RETVAL = PerlIO_setpos(handle, (Fpos_t*)p); |
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162 | #else |
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163 | RETVAL = fsetpos(handle, (Fpos_t*)p); |
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164 | #endif |
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165 | else { |
166 | RETVAL = -1; |
167 | errno = EINVAL; |
168 | } |
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169 | OUTPUT: |
170 | RETVAL |
171 | |
172 | MODULE = IO PACKAGE = IO::File PREFIX = f |
173 | |
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174 | SV * |
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175 | new_tmpfile(packname = "IO::File") |
176 | char * packname |
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177 | PREINIT: |
178 | OutputStream fp; |
179 | GV *gv; |
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180 | CODE: |
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181 | #ifdef PerlIO |
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182 | fp = PerlIO_tmpfile(); |
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183 | #else |
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184 | fp = tmpfile(); |
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185 | #endif |
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186 | gv = (GV*)SvREFCNT_inc(newGVgen(packname)); |
187 | hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD); |
188 | if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) { |
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189 | ST(0) = sv_2mortal(newRV((SV*)gv)); |
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190 | sv_bless(ST(0), gv_stashpv(packname, TRUE)); |
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191 | SvREFCNT_dec(gv); /* undo increment in newRV() */ |
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192 | } |
193 | else { |
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194 | ST(0) = &PL_sv_undef; |
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195 | SvREFCNT_dec(gv); |
196 | } |
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197 | |
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198 | MODULE = IO PACKAGE = IO::Poll |
199 | |
200 | void |
201 | _poll(timeout,...) |
202 | int timeout; |
203 | PPCODE: |
204 | { |
205 | #ifdef HAS_POLL |
206 | int nfd = (items - 1) / 2; |
207 | SV *tmpsv = NEWSV(999,nfd * sizeof(struct pollfd)); |
208 | struct pollfd *fds = (struct pollfd *)SvPVX(tmpsv); |
209 | int i,j,ret; |
210 | for(i=1, j=0 ; j < nfd ; j++) { |
211 | fds[j].fd = SvIV(ST(i)); |
212 | i++; |
213 | fds[j].events = SvIV(ST(i)); |
214 | i++; |
215 | fds[j].revents = 0; |
216 | } |
217 | if((ret = poll(fds,nfd,timeout)) >= 0) { |
218 | for(i=1, j=0 ; j < nfd ; j++) { |
219 | sv_setiv(ST(i), fds[j].fd); i++; |
220 | sv_setiv(ST(i), fds[j].revents); i++; |
221 | } |
222 | } |
223 | SvREFCNT_dec(tmpsv); |
224 | XSRETURN_IV(ret); |
225 | #else |
226 | not_here("IO::Poll::poll"); |
227 | #endif |
228 | } |
229 | |
230 | MODULE = IO PACKAGE = IO::Handle PREFIX = io_ |
231 | |
232 | void |
233 | io_blocking(handle,blk=-1) |
234 | InputStream handle |
235 | int blk |
236 | PROTOTYPE: $;$ |
237 | CODE: |
238 | { |
239 | int ret = io_blocking(handle, items == 1 ? -1 : blk ? 1 : 0); |
240 | if(ret >= 0) |
241 | XSRETURN_IV(ret); |
242 | else |
243 | XSRETURN_UNDEF; |
244 | } |
245 | |
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246 | MODULE = IO PACKAGE = IO::Handle PREFIX = f |
247 | |
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248 | |
249 | int |
250 | ungetc(handle, c) |
251 | InputStream handle |
252 | int c |
253 | CODE: |
254 | if (handle) |
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255 | #ifdef PerlIO |
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256 | RETVAL = PerlIO_ungetc(handle, c); |
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257 | #else |
258 | RETVAL = ungetc(c, handle); |
259 | #endif |
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260 | else { |
261 | RETVAL = -1; |
262 | errno = EINVAL; |
263 | } |
264 | OUTPUT: |
265 | RETVAL |
266 | |
267 | int |
268 | ferror(handle) |
269 | InputStream handle |
270 | CODE: |
271 | if (handle) |
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272 | #ifdef PerlIO |
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273 | RETVAL = PerlIO_error(handle); |
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274 | #else |
275 | RETVAL = ferror(handle); |
276 | #endif |
277 | else { |
278 | RETVAL = -1; |
279 | errno = EINVAL; |
280 | } |
281 | OUTPUT: |
282 | RETVAL |
283 | |
284 | int |
285 | clearerr(handle) |
286 | InputStream handle |
287 | CODE: |
288 | if (handle) { |
289 | #ifdef PerlIO |
290 | PerlIO_clearerr(handle); |
291 | #else |
292 | clearerr(handle); |
293 | #endif |
294 | RETVAL = 0; |
295 | } |
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296 | else { |
297 | RETVAL = -1; |
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298 | errno = EINVAL; |
299 | } |
300 | OUTPUT: |
301 | RETVAL |
302 | |
303 | int |
304 | untaint(handle) |
305 | SV * handle |
306 | CODE: |
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307 | #ifdef IOf_UNTAINT |
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308 | IO * io; |
309 | io = sv_2io(handle); |
310 | if (io) { |
311 | IoFLAGS(io) |= IOf_UNTAINT; |
312 | RETVAL = 0; |
313 | } |
314 | else { |
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315 | #endif |
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316 | RETVAL = -1; |
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317 | errno = EINVAL; |
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318 | #ifdef IOf_UNTAINT |
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319 | } |
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320 | #endif |
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321 | OUTPUT: |
322 | RETVAL |
323 | |
324 | SysRet |
325 | fflush(handle) |
326 | OutputStream handle |
327 | CODE: |
328 | if (handle) |
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329 | #ifdef PerlIO |
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330 | RETVAL = PerlIO_flush(handle); |
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331 | #else |
332 | RETVAL = Fflush(handle); |
333 | #endif |
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334 | else { |
335 | RETVAL = -1; |
336 | errno = EINVAL; |
337 | } |
338 | OUTPUT: |
339 | RETVAL |
340 | |
341 | void |
342 | setbuf(handle, buf) |
343 | OutputStream handle |
344 | char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), BUFSIZ) : 0; |
345 | CODE: |
346 | if (handle) |
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347 | #ifdef PERLIO_IS_STDIO |
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348 | setbuf(handle, buf); |
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349 | #else |
350 | not_here("IO::Handle::setbuf"); |
351 | #endif |
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352 | |
353 | SysRet |
354 | setvbuf(handle, buf, type, size) |
355 | OutputStream handle |
356 | char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0; |
357 | int type |
358 | int size |
359 | CODE: |
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360 | #if defined(PERLIO_IS_STDIO) && defined(_IOFBF) && defined(HAS_SETVBUF) |
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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 | } |