Commit | Line | Data |
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7d8fb588 MS |
1 | /* |
2 | * sh.exec.c: Search, find, and execute a command! | |
3 | */ | |
4 | /*- | |
5 | * Copyright (c) 1980, 1991 The Regents of the University of California. | |
6 | * All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. Neither the name of the University nor the names of its contributors | |
17 | * may be used to endorse or promote products derived from this software | |
18 | * without specific prior written permission. | |
19 | * | |
20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
30 | * SUCH DAMAGE. | |
31 | */ | |
32 | #include "sh.h" | |
7d8fb588 MS |
33 | #include "tc.h" |
34 | #include "tw.h" | |
35 | #ifdef WINNT_NATIVE | |
36 | #include <nt.const.h> | |
37 | #endif /*WINNT_NATIVE*/ | |
38 | ||
39 | /* | |
40 | * C shell | |
41 | */ | |
42 | ||
43 | #ifndef OLDHASH | |
44 | # define FASTHASH /* Fast hashing is the default */ | |
45 | #endif /* OLDHASH */ | |
46 | ||
47 | /* | |
48 | * System level search and execute of a command. | |
49 | * We look in each directory for the specified command name. | |
50 | * If the name contains a '/' then we execute only the full path name. | |
51 | * If there is no search path then we execute only full path names. | |
52 | */ | |
53 | ||
54 | /* | |
55 | * As we search for the command we note the first non-trivial error | |
56 | * message for presentation to the user. This allows us often | |
57 | * to show that a file has the wrong mode/no access when the file | |
58 | * is not in the last component of the search path, so we must | |
59 | * go on after first detecting the error. | |
60 | */ | |
61 | static char *exerr; /* Execution error message */ | |
62 | static Char *expath; /* Path for exerr */ | |
63 | ||
64 | /* | |
65 | * The two part hash function is designed to let texec() call the | |
66 | * more expensive hashname() only once and the simple hash() several | |
67 | * times (once for each path component checked). | |
68 | * Byte size is assumed to be 8. | |
69 | */ | |
70 | #define BITS_PER_BYTE 8 | |
71 | ||
72 | #ifdef FASTHASH | |
73 | /* | |
74 | * xhash is an array of hash buckets which are used to hash execs. If | |
75 | * it is allocated (havhash true), then to tell if ``name'' is | |
94afa86d | 76 | * (possibly) present in the i'th component of the variable path, look |
7d8fb588 MS |
77 | * at the [hashname(name)] bucket of size [hashwidth] bytes, in the [i |
78 | * mod size*8]'th bit. The cache size is defaults to a length of 1024 | |
79 | * buckets, each 1 byte wide. This implementation guarantees that | |
80 | * objects n bytes wide will be aligned on n byte boundaries. | |
81 | */ | |
82 | # define HSHMUL 241 | |
83 | ||
84 | static unsigned long *xhash = NULL; | |
85 | static unsigned int hashlength = 0, uhashlength = 0; | |
86 | static unsigned int hashwidth = 0, uhashwidth = 0; | |
87 | static int hashdebug = 0; | |
88 | ||
89 | # define hash(a, b) (((a) * HSHMUL + (b)) % (hashlength)) | |
90 | # define widthof(t) (sizeof(t) * BITS_PER_BYTE) | |
91 | # define tbit(f, i, t) (((t *) xhash)[(f)] & \ | |
92 | (1UL << (i & (widthof(t) - 1)))) | |
93 | # define tbis(f, i, t) (((t *) xhash)[(f)] |= \ | |
94 | (1UL << (i & (widthof(t) - 1)))) | |
95 | # define cbit(f, i) tbit(f, i, unsigned char) | |
96 | # define cbis(f, i) tbis(f, i, unsigned char) | |
97 | # define sbit(f, i) tbit(f, i, unsigned short) | |
98 | # define sbis(f, i) tbis(f, i, unsigned short) | |
99 | # define ibit(f, i) tbit(f, i, unsigned int) | |
100 | # define ibis(f, i) tbis(f, i, unsigned int) | |
101 | # define lbit(f, i) tbit(f, i, unsigned long) | |
102 | # define lbis(f, i) tbis(f, i, unsigned long) | |
103 | ||
104 | # define bit(f, i) (hashwidth==sizeof(unsigned char) ? cbit(f,i) : \ | |
105 | ((hashwidth==sizeof(unsigned short) ? sbit(f,i) : \ | |
106 | ((hashwidth==sizeof(unsigned int) ? ibit(f,i) : \ | |
107 | lbit(f,i)))))) | |
108 | # define bis(f, i) (hashwidth==sizeof(unsigned char) ? cbis(f,i) : \ | |
109 | ((hashwidth==sizeof(unsigned short) ? sbis(f,i) : \ | |
110 | ((hashwidth==sizeof(unsigned int) ? ibis(f,i) : \ | |
111 | lbis(f,i)))))) | |
112 | #else /* OLDHASH */ | |
113 | /* | |
114 | * Xhash is an array of HSHSIZ bits (HSHSIZ / 8 chars), which are used | |
115 | * to hash execs. If it is allocated (havhash true), then to tell | |
116 | * whether ``name'' is (possibly) present in the i'th component | |
117 | * of the variable path, you look at the bit in xhash indexed by | |
118 | * hash(hashname("name"), i). This is setup automatically | |
119 | * after .login is executed, and recomputed whenever ``path'' is | |
120 | * changed. | |
121 | */ | |
122 | # define HSHSIZ 8192 /* 1k bytes */ | |
123 | # define HSHMASK (HSHSIZ - 1) | |
124 | # define HSHMUL 243 | |
125 | static char xhash[HSHSIZ / BITS_PER_BYTE]; | |
126 | ||
127 | # define hash(a, b) (((a) * HSHMUL + (b)) & HSHMASK) | |
128 | # define bit(h, b) ((h)[(b) >> 3] & 1 << ((b) & 7)) /* bit test */ | |
129 | # define bis(h, b) ((h)[(b) >> 3] |= 1 << ((b) & 7)) /* bit set */ | |
130 | ||
131 | #endif /* FASTHASH */ | |
132 | ||
133 | #ifdef VFORK | |
134 | static int hits, misses; | |
135 | #endif /* VFORK */ | |
136 | ||
137 | /* Dummy search path for just absolute search when no path */ | |
138 | static Char *justabs[] = {STRNULL, 0}; | |
139 | ||
94afa86d | 140 | static void pexerr (void) __attribute__((__noreturn__)); |
7d8fb588 MS |
141 | static void texec (Char *, Char **); |
142 | int hashname (Char *); | |
143 | static int iscommand (Char *); | |
144 | ||
145 | void | |
146 | doexec(struct command *t, int do_glob) | |
147 | { | |
94afa86d | 148 | Char *dp, **pv, **opv, **av, *sav; |
7d8fb588 | 149 | struct varent *v; |
94afa86d | 150 | int slash, gflag, rehashed; |
7d8fb588 MS |
151 | int hashval, i; |
152 | Char *blk[2]; | |
153 | ||
154 | /* | |
155 | * Glob the command name. We will search $path even if this does something, | |
156 | * as in sh but not in csh. One special case: if there is no PATH, then we | |
157 | * execute only commands which start with '/'. | |
158 | */ | |
159 | blk[0] = t->t_dcom[0]; | |
160 | blk[1] = 0; | |
161 | gflag = 0; | |
162 | if (do_glob) | |
163 | gflag = tglob(blk); | |
164 | if (gflag) { | |
165 | pv = globall(blk, gflag); | |
166 | if (pv == 0) { | |
167 | setname(short2str(blk[0])); | |
168 | stderror(ERR_NAME | ERR_NOMATCH); | |
169 | } | |
170 | } | |
171 | else | |
172 | pv = saveblk(blk); | |
173 | cleanup_push(pv, blk_cleanup); | |
174 | ||
175 | trim(pv); | |
176 | ||
177 | exerr = 0; | |
178 | expath = Strsave(pv[0]); | |
179 | #ifdef VFORK | |
180 | Vexpath = expath; | |
181 | #endif /* VFORK */ | |
182 | ||
183 | v = adrof(STRpath); | |
184 | if (v == 0 && expath[0] != '/' && expath[0] != '.') | |
185 | pexerr(); | |
186 | slash = any(short2str(expath), '/'); | |
187 | ||
188 | /* | |
189 | * Glob the argument list, if necessary. Otherwise trim off the quote bits. | |
190 | */ | |
191 | gflag = 0; | |
192 | av = &t->t_dcom[1]; | |
193 | if (do_glob) | |
194 | gflag = tglob(av); | |
195 | if (gflag) { | |
196 | av = globall(av, gflag); | |
197 | if (av == 0) { | |
198 | setname(short2str(expath)); | |
199 | stderror(ERR_NAME | ERR_NOMATCH); | |
200 | } | |
201 | } | |
202 | else | |
203 | av = saveblk(av); | |
204 | ||
205 | blkfree(t->t_dcom); | |
206 | cleanup_ignore(pv); | |
207 | cleanup_until(pv); | |
208 | t->t_dcom = blkspl(pv, av); | |
209 | xfree(pv); | |
210 | xfree(av); | |
211 | av = t->t_dcom; | |
212 | trim(av); | |
213 | ||
214 | if (*av == NULL || **av == '\0') | |
215 | pexerr(); | |
216 | ||
217 | xechoit(av); /* Echo command if -x */ | |
218 | #ifdef CLOSE_ON_EXEC | |
219 | /* | |
220 | * Since all internal file descriptors are set to close on exec, we don't | |
221 | * need to close them explicitly here. Just reorient ourselves for error | |
222 | * messages. | |
223 | */ | |
224 | SHIN = 0; | |
225 | SHOUT = 1; | |
226 | SHDIAG = 2; | |
227 | OLDSTD = 0; | |
228 | isoutatty = isatty(SHOUT); | |
229 | isdiagatty = isatty(SHDIAG); | |
230 | #else | |
231 | closech(); /* Close random fd's */ | |
232 | #endif | |
233 | /* | |
234 | * We must do this AFTER any possible forking (like `foo` in glob) so that | |
235 | * this shell can still do subprocesses. | |
236 | */ | |
237 | { | |
238 | sigset_t set; | |
239 | sigemptyset(&set); | |
240 | sigaddset(&set, SIGINT); | |
241 | sigaddset(&set, SIGCHLD); | |
242 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
243 | } | |
244 | pintr_disabled = 0; | |
245 | pchild_disabled = 0; | |
246 | ||
247 | /* | |
248 | * If no path, no words in path, or a / in the filename then restrict the | |
249 | * command search. | |
250 | */ | |
251 | if (v == NULL || v->vec == NULL || v->vec[0] == NULL || slash) | |
94afa86d | 252 | opv = justabs; |
7d8fb588 | 253 | else |
94afa86d | 254 | opv = v->vec; |
7d8fb588 MS |
255 | sav = Strspl(STRslash, *av);/* / command name for postpending */ |
256 | #ifndef VFORK | |
257 | cleanup_push(sav, xfree); | |
258 | #else /* VFORK */ | |
259 | Vsav = sav; | |
260 | #endif /* VFORK */ | |
261 | hashval = havhash ? hashname(*av) : 0; | |
262 | ||
94afa86d JM |
263 | rehashed = 0; |
264 | retry: | |
265 | pv = opv; | |
7d8fb588 MS |
266 | i = 0; |
267 | #ifdef VFORK | |
268 | hits++; | |
269 | #endif /* VFORK */ | |
270 | do { | |
271 | /* | |
272 | * Try to save time by looking at the hash table for where this command | |
273 | * could be. If we are doing delayed hashing, then we put the names in | |
274 | * one at a time, as the user enters them. This is kinda like Korn | |
275 | * Shell's "tracked aliases". | |
276 | */ | |
277 | if (!slash && ABSOLUTEP(pv[0]) && havhash) { | |
278 | #ifdef FASTHASH | |
279 | if (!bit(hashval, i)) | |
280 | goto cont; | |
281 | #else /* OLDHASH */ | |
282 | int hashval1 = hash(hashval, i); | |
283 | if (!bit(xhash, hashval1)) | |
284 | goto cont; | |
285 | #endif /* FASTHASH */ | |
286 | } | |
287 | if (pv[0][0] == 0 || eq(pv[0], STRdot)) /* don't make ./xxx */ | |
288 | texec(*av, av); | |
289 | else { | |
290 | dp = Strspl(*pv, sav); | |
291 | #ifndef VFORK | |
292 | cleanup_push(dp, xfree); | |
293 | #else /* VFORK */ | |
294 | Vdp = dp; | |
295 | #endif /* VFORK */ | |
296 | ||
297 | texec(dp, av); | |
298 | #ifndef VFORK | |
299 | cleanup_until(dp); | |
300 | #else /* VFORK */ | |
301 | Vdp = 0; | |
302 | xfree(dp); | |
303 | #endif /* VFORK */ | |
304 | } | |
305 | #ifdef VFORK | |
306 | misses++; | |
307 | #endif /* VFORK */ | |
308 | cont: | |
309 | pv++; | |
310 | i++; | |
311 | } while (*pv); | |
312 | #ifdef VFORK | |
313 | hits--; | |
314 | #endif /* VFORK */ | |
94afa86d JM |
315 | if (adrof(STRautorehash) && !rehashed && havhash && opv != justabs) { |
316 | dohash(NULL, NULL); | |
317 | rehashed = 1; | |
318 | goto retry; | |
319 | } | |
7d8fb588 MS |
320 | #ifndef VFORK |
321 | cleanup_until(sav); | |
322 | #else /* VFORK */ | |
323 | Vsav = 0; | |
324 | xfree(sav); | |
325 | #endif /* VFORK */ | |
326 | pexerr(); | |
327 | } | |
328 | ||
329 | static void | |
330 | pexerr(void) | |
331 | { | |
332 | /* Couldn't find the damn thing */ | |
333 | if (expath) { | |
334 | setname(short2str(expath)); | |
335 | #ifdef VFORK | |
336 | Vexpath = 0; | |
337 | #endif /* VFORK */ | |
338 | xfree(expath); | |
339 | expath = 0; | |
340 | } | |
341 | else | |
342 | setname(""); | |
343 | if (exerr) | |
344 | stderror(ERR_NAME | ERR_STRING, exerr); | |
345 | stderror(ERR_NAME | ERR_COMMAND); | |
346 | } | |
347 | ||
348 | /* | |
349 | * Execute command f, arg list t. | |
350 | * Record error message if not found. | |
351 | * Also do shell scripts here. | |
352 | */ | |
353 | static void | |
354 | texec(Char *sf, Char **st) | |
355 | { | |
356 | char **t; | |
357 | char *f; | |
358 | struct varent *v; | |
359 | Char **vp; | |
360 | Char *lastsh[2]; | |
361 | char pref[2]; | |
362 | int fd; | |
363 | Char *st0, **ost; | |
364 | ||
365 | /* The order for the conversions is significant */ | |
366 | t = short2blk(st); | |
367 | f = short2str(sf); | |
368 | #ifdef VFORK | |
369 | Vt = t; | |
370 | #endif /* VFORK */ | |
371 | errno = 0; /* don't use a previous error */ | |
372 | #ifdef apollo | |
373 | /* | |
374 | * If we try to execute an nfs mounted directory on the apollo, we | |
375 | * hang forever. So until apollo fixes that.. | |
376 | */ | |
377 | { | |
378 | struct stat stb; | |
379 | if (stat(f, &stb) == 0 && S_ISDIR(stb.st_mode)) | |
380 | errno = EISDIR; | |
381 | } | |
382 | if (errno == 0) | |
383 | #endif /* apollo */ | |
384 | { | |
385 | #ifdef ISC_POSIX_EXEC_BUG | |
386 | __setostype(0); /* "0" is "__OS_SYSV" in <sys/user.h> */ | |
387 | #endif /* ISC_POSIX_EXEC_BUG */ | |
388 | (void) execv(f, t); | |
389 | #ifdef ISC_POSIX_EXEC_BUG | |
390 | __setostype(1); /* "1" is "__OS_POSIX" in <sys/user.h> */ | |
391 | #endif /* ISC_POSIX_EXEC_BUG */ | |
392 | } | |
393 | #ifdef VFORK | |
394 | Vt = 0; | |
395 | #endif /* VFORK */ | |
396 | blkfree((Char **) t); | |
397 | switch (errno) { | |
398 | ||
399 | case ENOEXEC: | |
400 | #ifdef WINNT_NATIVE | |
401 | nt_feed_to_cmd(f,t); | |
402 | #endif /* WINNT_NATIVE */ | |
403 | /* | |
404 | * From: casper@fwi.uva.nl (Casper H.S. Dik) If we could not execute | |
405 | * it, don't feed it to the shell if it looks like a binary! | |
406 | */ | |
407 | if ((fd = xopen(f, O_RDONLY|O_LARGEFILE)) != -1) { | |
408 | int nread; | |
7d8fb588 MS |
409 | if ((nread = xread(fd, pref, 2)) == 2) { |
410 | if (!isprint((unsigned char)pref[0]) && | |
411 | (pref[0] != '\n' && pref[0] != '\t')) { | |
412 | int err; | |
413 | ||
414 | err = errno; | |
415 | xclose(fd); | |
416 | /* | |
417 | * We *know* what ENOEXEC means. | |
418 | */ | |
419 | stderror(ERR_ARCH, f, strerror(err)); | |
420 | } | |
421 | } | |
422 | else if (nread < 0) { | |
423 | #ifdef convex | |
424 | int err; | |
425 | ||
426 | err = errno; | |
427 | xclose(fd); | |
428 | /* need to print error incase the file is migrated */ | |
429 | stderror(ERR_SYSTEM, f, strerror(err)); | |
430 | #endif | |
431 | } | |
432 | #ifdef _PATH_BSHELL | |
433 | else { | |
434 | pref[0] = '#'; | |
435 | pref[1] = '\0'; | |
436 | } | |
437 | #endif | |
438 | } | |
439 | #ifdef HASHBANG | |
440 | if (fd == -1 || | |
441 | pref[0] != '#' || pref[1] != '!' || hashbang(fd, &vp) == -1) { | |
442 | #endif /* HASHBANG */ | |
443 | /* | |
444 | * If there is an alias for shell, then put the words of the alias in | |
445 | * front of the argument list replacing the command name. Note no | |
446 | * interpretation of the words at this point. | |
447 | */ | |
448 | v = adrof1(STRshell, &aliases); | |
449 | if (v == NULL || v->vec == NULL) { | |
450 | vp = lastsh; | |
451 | vp[0] = adrof(STRshell) ? varval(STRshell) : STR_SHELLPATH; | |
452 | vp[1] = NULL; | |
453 | #ifdef _PATH_BSHELL | |
d6ab524c | 454 | if (fd != -1 |
7d8fb588 MS |
455 | # ifndef ISC /* Compatible with ISC's /bin/csh */ |
456 | && pref[0] != '#' | |
457 | # endif /* ISC */ | |
458 | ) | |
459 | vp[0] = STR_BSHELL; | |
460 | #endif | |
461 | vp = saveblk(vp); | |
462 | } | |
463 | else | |
464 | vp = saveblk(v->vec); | |
465 | #ifdef HASHBANG | |
466 | } | |
467 | #endif /* HASHBANG */ | |
468 | if (fd != -1) | |
469 | xclose(fd); | |
470 | ||
471 | st0 = st[0]; | |
472 | st[0] = sf; | |
473 | ost = st; | |
474 | st = blkspl(vp, st); /* Splice up the new arglst */ | |
475 | ost[0] = st0; | |
476 | sf = *st; | |
477 | /* The order for the conversions is significant */ | |
478 | t = short2blk(st); | |
479 | f = short2str(sf); | |
480 | xfree(st); | |
481 | blkfree((Char **) vp); | |
482 | #ifdef VFORK | |
483 | Vt = t; | |
484 | #endif /* VFORK */ | |
485 | #ifdef ISC_POSIX_EXEC_BUG | |
486 | __setostype(0); /* "0" is "__OS_SYSV" in <sys/user.h> */ | |
487 | #endif /* ISC_POSIX_EXEC_BUG */ | |
488 | (void) execv(f, t); | |
489 | #ifdef ISC_POSIX_EXEC_BUG | |
490 | __setostype(1); /* "1" is "__OS_POSIX" in <sys/user.h> */ | |
491 | #endif /* ISC_POSIX_EXEC_BUG */ | |
492 | #ifdef VFORK | |
493 | Vt = 0; | |
494 | #endif /* VFORK */ | |
495 | blkfree((Char **) t); | |
496 | /* The sky is falling, the sky is falling! */ | |
497 | stderror(ERR_SYSTEM, f, strerror(errno)); | |
498 | break; | |
499 | ||
500 | case ENOMEM: | |
501 | stderror(ERR_SYSTEM, f, strerror(errno)); | |
502 | break; | |
503 | ||
504 | #ifdef _IBMR2 | |
505 | case 0: /* execv fails and returns 0! */ | |
506 | #endif /* _IBMR2 */ | |
507 | case ENOENT: | |
508 | break; | |
509 | ||
510 | default: | |
511 | if (exerr == 0) { | |
512 | exerr = strerror(errno); | |
513 | xfree(expath); | |
514 | expath = Strsave(sf); | |
515 | #ifdef VFORK | |
516 | Vexpath = expath; | |
517 | #endif /* VFORK */ | |
518 | } | |
519 | break; | |
520 | } | |
521 | } | |
522 | ||
523 | struct execash_state | |
524 | { | |
525 | int saveIN, saveOUT, saveDIAG, saveSTD; | |
526 | int SHIN, SHOUT, SHDIAG, OLDSTD; | |
527 | int didfds; | |
528 | #ifndef CLOSE_ON_EXEC | |
529 | int didcch; | |
530 | #endif | |
531 | struct sigaction sigint, sigquit, sigterm; | |
532 | }; | |
533 | ||
534 | static void | |
535 | execash_cleanup(void *xstate) | |
536 | { | |
537 | struct execash_state *state; | |
538 | ||
539 | state = xstate; | |
540 | sigaction(SIGINT, &state->sigint, NULL); | |
541 | sigaction(SIGQUIT, &state->sigquit, NULL); | |
542 | sigaction(SIGTERM, &state->sigterm, NULL); | |
543 | ||
544 | doneinp = 0; | |
545 | #ifndef CLOSE_ON_EXEC | |
546 | didcch = state->didcch; | |
547 | #endif /* CLOSE_ON_EXEC */ | |
548 | didfds = state->didfds; | |
549 | xclose(SHIN); | |
550 | xclose(SHOUT); | |
551 | xclose(SHDIAG); | |
552 | xclose(OLDSTD); | |
553 | close_on_exec(SHIN = dmove(state->saveIN, state->SHIN), 1); | |
554 | close_on_exec(SHOUT = dmove(state->saveOUT, state->SHOUT), 1); | |
555 | close_on_exec(SHDIAG = dmove(state->saveDIAG, state->SHDIAG), 1); | |
556 | close_on_exec(OLDSTD = dmove(state->saveSTD, state->OLDSTD), 1); | |
557 | } | |
558 | ||
559 | /*ARGSUSED*/ | |
560 | void | |
561 | execash(Char **t, struct command *kp) | |
562 | { | |
563 | struct execash_state state; | |
564 | ||
565 | USE(t); | |
566 | if (chkstop == 0 && setintr) | |
567 | panystop(0); | |
568 | /* | |
569 | * Hmm, we don't really want to do that now because we might | |
570 | * fail, but what is the choice | |
571 | */ | |
572 | rechist(NULL, adrof(STRsavehist) != NULL); | |
573 | ||
574 | ||
575 | sigaction(SIGINT, &parintr, &state.sigint); | |
576 | sigaction(SIGQUIT, &parintr, &state.sigquit); | |
577 | sigaction(SIGTERM, &parterm, &state.sigterm); | |
578 | ||
579 | state.didfds = didfds; | |
580 | #ifndef CLOSE_ON_EXEC | |
581 | state.didcch = didcch; | |
582 | #endif /* CLOSE_ON_EXEC */ | |
583 | state.SHIN = SHIN; | |
584 | state.SHOUT = SHOUT; | |
585 | state.SHDIAG = SHDIAG; | |
586 | state.OLDSTD = OLDSTD; | |
587 | ||
588 | (void)close_on_exec (state.saveIN = dcopy(SHIN, -1), 1); | |
589 | (void)close_on_exec (state.saveOUT = dcopy(SHOUT, -1), 1); | |
590 | (void)close_on_exec (state.saveDIAG = dcopy(SHDIAG, -1), 1); | |
591 | (void)close_on_exec (state.saveSTD = dcopy(OLDSTD, -1), 1); | |
592 | ||
593 | lshift(kp->t_dcom, 1); | |
594 | ||
595 | (void)close_on_exec (SHIN = dcopy(0, -1), 1); | |
596 | (void)close_on_exec (SHOUT = dcopy(1, -1), 1); | |
597 | (void)close_on_exec (SHDIAG = dcopy(2, -1), 1); | |
598 | #ifndef CLOSE_ON_EXEC | |
599 | didcch = 0; | |
600 | #endif /* CLOSE_ON_EXEC */ | |
601 | didfds = 0; | |
602 | cleanup_push(&state, execash_cleanup); | |
603 | ||
604 | /* | |
653fab9e | 605 | * Decrement the shell level, if not in a subshell |
7d8fb588 | 606 | */ |
653fab9e SW |
607 | if (mainpid == getpid()) |
608 | shlvl(-1); | |
7d8fb588 MS |
609 | #ifdef WINNT_NATIVE |
610 | __nt_really_exec=1; | |
611 | #endif /* WINNT_NATIVE */ | |
612 | doexec(kp, 1); | |
613 | ||
614 | cleanup_until(&state); | |
615 | } | |
616 | ||
617 | void | |
618 | xechoit(Char **t) | |
619 | { | |
620 | if (adrof(STRecho)) { | |
621 | int odidfds = didfds; | |
622 | flush(); | |
623 | haderr = 1; | |
624 | didfds = 0; | |
625 | blkpr(t), xputchar('\n'); | |
626 | flush(); | |
627 | didfds = odidfds; | |
628 | haderr = 0; | |
629 | } | |
630 | } | |
631 | ||
632 | /*ARGSUSED*/ | |
633 | void | |
634 | dohash(Char **vv, struct command *c) | |
635 | { | |
636 | #ifdef COMMENT | |
637 | struct stat stb; | |
638 | #endif | |
639 | DIR *dirp; | |
640 | struct dirent *dp; | |
641 | int i = 0; | |
642 | struct varent *v = adrof(STRpath); | |
643 | Char **pv; | |
644 | int hashval; | |
645 | #ifdef WINNT_NATIVE | |
646 | int is_windir; /* check if it is the windows directory */ | |
647 | USE(hashval); | |
648 | #endif /* WINNT_NATIVE */ | |
649 | ||
650 | USE(c); | |
651 | #ifdef FASTHASH | |
652 | if (vv && vv[1]) { | |
653 | uhashlength = atoi(short2str(vv[1])); | |
654 | if (vv[2]) { | |
655 | uhashwidth = atoi(short2str(vv[2])); | |
d6ab524c AHJ |
656 | if ((uhashwidth != sizeof(unsigned char)) && |
657 | (uhashwidth != sizeof(unsigned short)) && | |
7d8fb588 MS |
658 | (uhashwidth != sizeof(unsigned long))) |
659 | uhashwidth = 0; | |
660 | if (vv[3]) | |
661 | hashdebug = atoi(short2str(vv[3])); | |
662 | } | |
663 | } | |
664 | ||
665 | if (uhashwidth) | |
666 | hashwidth = uhashwidth; | |
667 | else { | |
668 | hashwidth = 0; | |
669 | if (v == NULL) | |
670 | return; | |
671 | for (pv = v->vec; pv && *pv; pv++, hashwidth++) | |
672 | continue; | |
673 | if (hashwidth <= widthof(unsigned char)) | |
674 | hashwidth = sizeof(unsigned char); | |
675 | else if (hashwidth <= widthof(unsigned short)) | |
676 | hashwidth = sizeof(unsigned short); | |
677 | else if (hashwidth <= widthof(unsigned int)) | |
678 | hashwidth = sizeof(unsigned int); | |
679 | else | |
680 | hashwidth = sizeof(unsigned long); | |
681 | } | |
682 | ||
683 | if (uhashlength) | |
684 | hashlength = uhashlength; | |
685 | else | |
686 | hashlength = hashwidth * (8*64);/* "average" files per dir in path */ | |
687 | ||
688 | xfree(xhash); | |
689 | xhash = xcalloc(hashlength * hashwidth, 1); | |
690 | #endif /* FASTHASH */ | |
691 | ||
692 | (void) getusername(NULL); /* flush the tilde cashe */ | |
693 | tw_cmd_free(); | |
694 | havhash = 1; | |
695 | if (v == NULL) | |
696 | return; | |
697 | for (pv = v->vec; pv && *pv; pv++, i++) { | |
698 | if (!ABSOLUTEP(pv[0])) | |
699 | continue; | |
700 | dirp = opendir(short2str(*pv)); | |
701 | if (dirp == NULL) | |
702 | continue; | |
703 | cleanup_push(dirp, opendir_cleanup); | |
704 | #ifdef COMMENT /* this isn't needed. opendir won't open | |
705 | * non-dirs */ | |
706 | if (fstat(dirp->dd_fd, &stb) < 0 || !S_ISDIR(stb.st_mode)) { | |
707 | cleanup_until(dirp); | |
708 | continue; | |
709 | } | |
710 | #endif | |
711 | #ifdef WINNT_NATIVE | |
712 | is_windir = nt_check_if_windir(short2str(*pv)); | |
713 | #endif /* WINNT_NATIVE */ | |
714 | while ((dp = readdir(dirp)) != NULL) { | |
715 | if (dp->d_ino == 0) | |
716 | continue; | |
717 | if (dp->d_name[0] == '.' && | |
718 | (dp->d_name[1] == '\0' || | |
719 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) | |
720 | continue; | |
721 | #ifdef WINNT_NATIVE | |
722 | nt_check_name_and_hash(is_windir, dp->d_name, i); | |
723 | #else /* !WINNT_NATIVE*/ | |
724 | #if defined(_UWIN) || defined(__CYGWIN__) | |
725 | /* Turn foo.{exe,com,bat} into foo since UWIN's readdir returns | |
726 | * the file with the .exe, .com, .bat extension | |
94afa86d JM |
727 | * |
728 | * Same for Cygwin, but only for .exe and .com extension. | |
7d8fb588 MS |
729 | */ |
730 | { | |
731 | ssize_t ext = strlen(dp->d_name) - 4; | |
732 | if ((ext > 0) && (strcasecmp(&dp->d_name[ext], ".exe") == 0 || | |
94afa86d | 733 | #ifndef __CYGWIN__ |
7d8fb588 | 734 | strcasecmp(&dp->d_name[ext], ".bat") == 0 || |
94afa86d | 735 | #endif |
7d8fb588 MS |
736 | strcasecmp(&dp->d_name[ext], ".com") == 0)) { |
737 | #ifdef __CYGWIN__ | |
738 | /* Also store the variation with extension. */ | |
739 | hashval = hashname(str2short(dp->d_name)); | |
740 | bis(hashval, i); | |
741 | #endif /* __CYGWIN__ */ | |
742 | dp->d_name[ext] = '\0'; | |
743 | } | |
744 | } | |
745 | #endif /* _UWIN || __CYGWIN__ */ | |
746 | # ifdef FASTHASH | |
747 | hashval = hashname(str2short(dp->d_name)); | |
748 | bis(hashval, i); | |
749 | if (hashdebug & 1) | |
750 | xprintf(CGETS(13, 1, "hash=%-4d dir=%-2d prog=%s\n"), | |
751 | hashname(str2short(dp->d_name)), i, dp->d_name); | |
752 | # else /* OLD HASH */ | |
753 | hashval = hash(hashname(str2short(dp->d_name)), i); | |
754 | bis(xhash, hashval); | |
755 | # endif /* FASTHASH */ | |
756 | /* tw_add_comm_name (dp->d_name); */ | |
757 | #endif /* WINNT_NATIVE */ | |
758 | } | |
759 | cleanup_until(dirp); | |
760 | } | |
761 | } | |
762 | ||
763 | /*ARGSUSED*/ | |
764 | void | |
765 | dounhash(Char **v, struct command *c) | |
766 | { | |
767 | USE(c); | |
768 | USE(v); | |
769 | havhash = 0; | |
770 | #ifdef FASTHASH | |
771 | xfree(xhash); | |
772 | xhash = NULL; | |
773 | #endif /* FASTHASH */ | |
774 | } | |
775 | ||
776 | /*ARGSUSED*/ | |
777 | void | |
778 | hashstat(Char **v, struct command *c) | |
779 | { | |
780 | USE(c); | |
781 | USE(v); | |
d6ab524c | 782 | #ifdef FASTHASH |
7d8fb588 MS |
783 | if (havhash && hashlength && hashwidth) |
784 | xprintf(CGETS(13, 2, "%d hash buckets of %d bits each\n"), | |
785 | hashlength, hashwidth*8); | |
786 | if (hashdebug) | |
787 | xprintf(CGETS(13, 3, "debug mask = 0x%08x\n"), hashdebug); | |
788 | #endif /* FASTHASH */ | |
789 | #ifdef VFORK | |
790 | if (hits + misses) | |
791 | xprintf(CGETS(13, 4, "%d hits, %d misses, %d%%\n"), | |
792 | hits, misses, 100 * hits / (hits + misses)); | |
793 | #endif | |
794 | } | |
795 | ||
796 | ||
797 | /* | |
798 | * Hash a command name. | |
799 | */ | |
800 | int | |
801 | hashname(Char *cp) | |
802 | { | |
803 | unsigned long h; | |
804 | ||
805 | for (h = 0; *cp; cp++) | |
806 | h = hash(h, *cp); | |
807 | return ((int) h); | |
808 | } | |
809 | ||
810 | static int | |
811 | iscommand(Char *name) | |
812 | { | |
94afa86d | 813 | Char **opv, **pv; |
7d8fb588 MS |
814 | Char *sav; |
815 | struct varent *v; | |
816 | int slash = any(short2str(name), '/'); | |
94afa86d | 817 | int hashval, rehashed, i; |
7d8fb588 MS |
818 | |
819 | v = adrof(STRpath); | |
820 | if (v == NULL || v->vec == NULL || v->vec[0] == NULL || slash) | |
94afa86d | 821 | opv = justabs; |
7d8fb588 | 822 | else |
94afa86d | 823 | opv = v->vec; |
7d8fb588 MS |
824 | sav = Strspl(STRslash, name); /* / command name for postpending */ |
825 | hashval = havhash ? hashname(name) : 0; | |
94afa86d JM |
826 | |
827 | rehashed = 0; | |
828 | retry: | |
829 | pv = opv; | |
7d8fb588 MS |
830 | i = 0; |
831 | do { | |
832 | if (!slash && ABSOLUTEP(pv[0]) && havhash) { | |
833 | #ifdef FASTHASH | |
834 | if (!bit(hashval, i)) | |
835 | goto cont; | |
836 | #else /* OLDHASH */ | |
837 | int hashval1 = hash(hashval, i); | |
838 | if (!bit(xhash, hashval1)) | |
839 | goto cont; | |
840 | #endif /* FASTHASH */ | |
841 | } | |
842 | if (pv[0][0] == 0 || eq(pv[0], STRdot)) { /* don't make ./xxx */ | |
843 | if (executable(NULL, name, 0)) { | |
844 | xfree(sav); | |
845 | return i + 1; | |
846 | } | |
847 | } | |
848 | else { | |
849 | if (executable(*pv, sav, 0)) { | |
850 | xfree(sav); | |
851 | return i + 1; | |
852 | } | |
853 | } | |
854 | cont: | |
855 | pv++; | |
856 | i++; | |
857 | } while (*pv); | |
94afa86d JM |
858 | if (adrof(STRautorehash) && !rehashed && havhash && opv != justabs) { |
859 | dohash(NULL, NULL); | |
860 | rehashed = 1; | |
861 | goto retry; | |
862 | } | |
7d8fb588 MS |
863 | xfree(sav); |
864 | return 0; | |
865 | } | |
866 | ||
867 | /* Also by: | |
868 | * Andreas Luik <luik@isaak.isa.de> | |
869 | * I S A GmbH - Informationssysteme fuer computerintegrierte Automatisierung | |
870 | * Azenberstr. 35 | |
871 | * D-7000 Stuttgart 1 | |
872 | * West-Germany | |
873 | * is the executable() routine below and changes to iscommand(). | |
874 | * Thanks again!! | |
875 | */ | |
876 | ||
877 | #ifndef WINNT_NATIVE | |
878 | /* | |
879 | * executable() examines the pathname obtained by concatenating dir and name | |
880 | * (dir may be NULL), and returns 1 either if it is executable by us, or | |
881 | * if dir_ok is set and the pathname refers to a directory. | |
882 | * This is a bit kludgy, but in the name of optimization... | |
883 | */ | |
884 | int | |
885 | executable(const Char *dir, const Char *name, int dir_ok) | |
886 | { | |
887 | struct stat stbuf; | |
888 | char *strname; | |
889 | ||
890 | if (dir && *dir) { | |
891 | Char *path; | |
892 | ||
893 | path = Strspl(dir, name); | |
894 | strname = short2str(path); | |
895 | xfree(path); | |
896 | } | |
897 | else | |
898 | strname = short2str(name); | |
899 | ||
900 | return (stat(strname, &stbuf) != -1 && | |
901 | ((dir_ok && S_ISDIR(stbuf.st_mode)) || | |
902 | (S_ISREG(stbuf.st_mode) && | |
903 | /* save time by not calling access() in the hopeless case */ | |
904 | (stbuf.st_mode & (S_IXOTH | S_IXGRP | S_IXUSR)) && | |
905 | access(strname, X_OK) == 0 | |
906 | ))); | |
907 | } | |
908 | #endif /*!WINNT_NATIVE*/ | |
909 | ||
910 | struct tellmewhat_s0_cleanup | |
911 | { | |
912 | Char **dest, *val; | |
913 | }; | |
914 | ||
915 | static void | |
916 | tellmewhat_s0_cleanup(void *xstate) | |
917 | { | |
918 | struct tellmewhat_s0_cleanup *state; | |
919 | ||
920 | state = xstate; | |
921 | *state->dest = state->val; | |
922 | } | |
923 | ||
924 | int | |
925 | tellmewhat(struct wordent *lexp, Char **str) | |
926 | { | |
927 | struct tellmewhat_s0_cleanup s0; | |
928 | int i; | |
929 | const struct biltins *bptr; | |
930 | struct wordent *sp = lexp->next; | |
931 | int aliased = 0, found; | |
932 | Char *s1, *s2, *cmd; | |
933 | Char qc; | |
934 | ||
935 | if (adrof1(sp->word, &aliases)) { | |
936 | alias(lexp); | |
937 | sp = lexp->next; | |
938 | aliased = 1; | |
939 | } | |
940 | ||
941 | s0.dest = &sp->word; /* to get the memory freeing right... */ | |
942 | s0.val = sp->word; | |
943 | cleanup_push(&s0, tellmewhat_s0_cleanup); | |
944 | ||
945 | /* handle quoted alias hack */ | |
946 | if ((*(sp->word) & (QUOTE | TRIM)) == QUOTE) | |
947 | (sp->word)++; | |
948 | ||
949 | /* do quoting, if it hasn't been done */ | |
950 | s1 = s2 = sp->word; | |
951 | while (*s2) | |
952 | switch (*s2) { | |
953 | case '\'': | |
954 | case '"': | |
955 | qc = *s2++; | |
956 | while (*s2 && *s2 != qc) | |
957 | *s1++ = *s2++ | QUOTE; | |
958 | if (*s2) | |
959 | s2++; | |
960 | break; | |
961 | case '\\': | |
962 | if (*++s2) | |
963 | *s1++ = *s2++ | QUOTE; | |
964 | break; | |
965 | default: | |
966 | *s1++ = *s2++; | |
967 | } | |
968 | *s1 = '\0'; | |
969 | ||
970 | for (bptr = bfunc; bptr < &bfunc[nbfunc]; bptr++) { | |
971 | if (eq(sp->word, str2short(bptr->bname))) { | |
972 | if (str == NULL) { | |
973 | if (aliased) | |
974 | prlex(lexp); | |
d6ab524c | 975 | xprintf(CGETS(13, 5, "%" TCSH_S ": shell built-in command.\n"), |
7d8fb588 MS |
976 | sp->word); |
977 | flush(); | |
978 | } | |
979 | else | |
980 | *str = Strsave(sp->word); | |
981 | cleanup_until(&s0); | |
982 | return TRUE; | |
983 | } | |
984 | } | |
985 | #ifdef WINNT_NATIVE | |
986 | for (bptr = nt_bfunc; bptr < &nt_bfunc[nt_nbfunc]; bptr++) { | |
987 | if (eq(sp->word, str2short(bptr->bname))) { | |
988 | if (str == NULL) { | |
989 | if (aliased) | |
990 | prlex(lexp); | |
d6ab524c | 991 | xprintf(CGETS(13, 5, "%" TCSH_S ": shell built-in command.\n"), |
7d8fb588 MS |
992 | sp->word); |
993 | flush(); | |
994 | } | |
995 | else | |
996 | *str = Strsave(sp->word); | |
997 | cleanup_until(&s0); | |
998 | return TRUE; | |
999 | } | |
1000 | } | |
1001 | #endif /* WINNT_NATIVE*/ | |
1002 | ||
1003 | sp->word = cmd = globone(sp->word, G_IGNORE); | |
1004 | cleanup_push(cmd, xfree); | |
1005 | ||
1006 | if ((i = iscommand(sp->word)) != 0) { | |
1007 | Char **pv; | |
1008 | struct varent *v; | |
1009 | int slash = any(short2str(sp->word), '/'); | |
1010 | ||
1011 | v = adrof(STRpath); | |
1012 | if (v == NULL || v->vec == NULL || v->vec[0] == NULL || slash) | |
1013 | pv = justabs; | |
1014 | else | |
1015 | pv = v->vec; | |
1016 | ||
1017 | pv += i - 1; | |
1018 | if (pv[0][0] == 0 || eq(pv[0], STRdot)) { | |
1019 | if (!slash) { | |
1020 | sp->word = Strspl(STRdotsl, sp->word); | |
1021 | cleanup_push(sp->word, xfree); | |
1022 | prlex(lexp); | |
1023 | cleanup_until(sp->word); | |
1024 | } | |
1025 | else | |
1026 | prlex(lexp); | |
1027 | } | |
1028 | else { | |
1029 | s1 = Strspl(*pv, STRslash); | |
1030 | sp->word = Strspl(s1, sp->word); | |
1031 | xfree(s1); | |
1032 | cleanup_push(sp->word, xfree); | |
1033 | if (str == NULL) | |
1034 | prlex(lexp); | |
1035 | else | |
1036 | *str = Strsave(sp->word); | |
1037 | cleanup_until(sp->word); | |
1038 | } | |
1039 | found = 1; | |
1040 | } | |
1041 | else { | |
1042 | if (str == NULL) { | |
1043 | if (aliased) | |
1044 | prlex(lexp); | |
d6ab524c AHJ |
1045 | xprintf(CGETS(13, 6, "%" TCSH_S ": Command not found.\n"), |
1046 | sp->word); | |
7d8fb588 MS |
1047 | flush(); |
1048 | } | |
1049 | else | |
1050 | *str = Strsave(sp->word); | |
1051 | found = 0; | |
1052 | } | |
1053 | cleanup_until(&s0); | |
1054 | return found; | |
1055 | } | |
1056 | ||
1057 | /* | |
1058 | * Builtin to look at and list all places a command may be defined: | |
1059 | * aliases, shell builtins, and the path. | |
1060 | * | |
1061 | * Marc Horowitz <marc@mit.edu> | |
1062 | * MIT Student Information Processing Board | |
1063 | */ | |
1064 | ||
1065 | /*ARGSUSED*/ | |
1066 | void | |
1067 | dowhere(Char **v, struct command *c) | |
1068 | { | |
1069 | int found = 1; | |
1070 | USE(c); | |
60962bbc JM |
1071 | |
1072 | if (adrof(STRautorehash)) | |
1073 | dohash(NULL, NULL); | |
7d8fb588 MS |
1074 | for (v++; *v; v++) |
1075 | found &= find_cmd(*v, 1); | |
1076 | /* Make status nonzero if any command is not found. */ | |
1077 | if (!found) | |
d6ab524c | 1078 | setstatus(1); |
7d8fb588 MS |
1079 | } |
1080 | ||
1081 | int | |
1082 | find_cmd(Char *cmd, int prt) | |
1083 | { | |
1084 | struct varent *var; | |
1085 | const struct biltins *bptr; | |
1086 | Char **pv; | |
1087 | Char *sv; | |
94afa86d | 1088 | int hashval, rehashed, i, ex, rval = 0; |
7d8fb588 MS |
1089 | |
1090 | if (prt && any(short2str(cmd), '/')) { | |
57e3f2b5 | 1091 | xprintf("%s", CGETS(13, 7, "where: / in command makes no sense\n")); |
7d8fb588 MS |
1092 | return rval; |
1093 | } | |
1094 | ||
1095 | /* first, look for an alias */ | |
1096 | ||
1097 | if (prt && adrof1(cmd, &aliases)) { | |
1098 | if ((var = adrof1(cmd, &aliases)) != NULL) { | |
d6ab524c | 1099 | xprintf(CGETS(13, 8, "%" TCSH_S " is aliased to "), cmd); |
7d8fb588 MS |
1100 | if (var->vec != NULL) |
1101 | blkpr(var->vec); | |
1102 | xputchar('\n'); | |
1103 | rval = 1; | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | /* next, look for a shell builtin */ | |
1108 | ||
1109 | for (bptr = bfunc; bptr < &bfunc[nbfunc]; bptr++) { | |
1110 | if (eq(cmd, str2short(bptr->bname))) { | |
1111 | rval = 1; | |
1112 | if (prt) | |
d6ab524c | 1113 | xprintf(CGETS(13, 9, "%" TCSH_S " is a shell built-in\n"), cmd); |
7d8fb588 MS |
1114 | else |
1115 | return rval; | |
1116 | } | |
1117 | } | |
1118 | #ifdef WINNT_NATIVE | |
1119 | for (bptr = nt_bfunc; bptr < &nt_bfunc[nt_nbfunc]; bptr++) { | |
1120 | if (eq(cmd, str2short(bptr->bname))) { | |
1121 | rval = 1; | |
1122 | if (prt) | |
d6ab524c | 1123 | xprintf(CGETS(13, 9, "%" TCSH_S " is a shell built-in\n"), cmd); |
7d8fb588 MS |
1124 | else |
1125 | return rval; | |
1126 | } | |
1127 | } | |
1128 | #endif /* WINNT_NATIVE*/ | |
1129 | ||
1130 | /* last, look through the path for the command */ | |
1131 | ||
1132 | if ((var = adrof(STRpath)) == NULL) | |
1133 | return rval; | |
1134 | ||
1135 | hashval = havhash ? hashname(cmd) : 0; | |
1136 | ||
1137 | sv = Strspl(STRslash, cmd); | |
1138 | cleanup_push(sv, xfree); | |
1139 | ||
94afa86d JM |
1140 | rehashed = 0; |
1141 | retry: | |
7d8fb588 MS |
1142 | for (pv = var->vec, i = 0; pv && *pv; pv++, i++) { |
1143 | if (havhash && !eq(*pv, STRdot)) { | |
1144 | #ifdef FASTHASH | |
1145 | if (!bit(hashval, i)) | |
1146 | continue; | |
1147 | #else /* OLDHASH */ | |
1148 | int hashval1 = hash(hashval, i); | |
1149 | if (!bit(xhash, hashval1)) | |
1150 | continue; | |
1151 | #endif /* FASTHASH */ | |
1152 | } | |
1153 | ex = executable(*pv, sv, 0); | |
1154 | #ifdef FASTHASH | |
1155 | if (!ex && (hashdebug & 2)) { | |
57e3f2b5 | 1156 | xprintf("%s", CGETS(13, 10, "hash miss: ")); |
7d8fb588 MS |
1157 | ex = 1; /* Force printing */ |
1158 | } | |
1159 | #endif /* FASTHASH */ | |
1160 | if (ex) { | |
1161 | rval = 1; | |
1162 | if (prt) { | |
d6ab524c AHJ |
1163 | xprintf("%" TCSH_S "/", *pv); |
1164 | xprintf("%" TCSH_S "\n", cmd); | |
7d8fb588 MS |
1165 | } |
1166 | else | |
1167 | return rval; | |
1168 | } | |
1169 | } | |
60962bbc | 1170 | /* |
d6ab524c | 1171 | * If we are printing, we are being called from dowhere() which it |
60962bbc JM |
1172 | * has rehashed already |
1173 | */ | |
1174 | if (!prt && adrof(STRautorehash) && !rehashed && havhash) { | |
94afa86d JM |
1175 | dohash(NULL, NULL); |
1176 | rehashed = 1; | |
1177 | goto retry; | |
1178 | } | |
7d8fb588 MS |
1179 | cleanup_until(sv); |
1180 | return rval; | |
1181 | } | |
1182 | #ifdef WINNT_NATIVE | |
1183 | int hashval_extern(cp) | |
1184 | Char *cp; | |
1185 | { | |
1186 | return havhash?hashname(cp):0; | |
1187 | } | |
1188 | int bit_extern(val,i) | |
1189 | int val; | |
1190 | int i; | |
1191 | { | |
1192 | return bit(val,i); | |
1193 | } | |
1194 | void bis_extern(val,i) | |
1195 | int val; | |
1196 | int i; | |
1197 | { | |
1198 | bis(val,i); | |
1199 | } | |
1200 | #endif /* WINNT_NATIVE */ | |
1201 |