source: trunk/src/kash/shinstance.c@ 1505

Last change on this file since 1505 was 1240, checked in by bird, 18 years ago

shfile_cloexec. signal types.
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File size: 8.3 KB
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1/* $Id: shinstance.c 1240 2007-10-10 02:32:54Z bird $ */
2/** @file
3 *
4 * The shell instance methods.
5 *
6 * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
7 *
8 *
9 * This file is part of kBuild.
10 *
11 * kBuild is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * kBuild is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with kBuild; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 */
26
27#include <string.h>
28#include <stdlib.h>
29#ifndef _MSC_VER
30# include <unistd.h>
31# include <pwd.h>
32extern char **environ;
33#endif
34#include "shinstance.h"
35
36
37/**
38 * Creates a root shell instance.
39 *
40 * @param inherit The shell to inherit from. If NULL inherit from environment and such.
41 * @param argc The argument count.
42 * @param argv The argument vector.
43 *
44 * @returns pointer to root shell on success, NULL on failure.
45 */
46shinstance *sh_create_root_shell(shinstance *inherit, int argc, char **argv)
47{
48 shinstance *psh;
49
50 psh = calloc(sizeof(*psh), 1);
51 if (psh)
52 {
53 /* the special stuff. */
54#ifdef _MSC_VER
55 psh->pid = _getpid();
56#else
57 psh->pid = getpid();
58#endif
59
60 /* memalloc.c */
61 psh->stacknleft = MINSIZE;
62 psh->herefd = -1;
63 psh->stackp = &psh->stackbase;
64 psh->stacknxt = psh->stackbase.space;
65
66 /* input.c */
67 psh->plinno = 1;
68 psh->init_editline = 0;
69 psh->parsefile = &psh->basepf;
70
71 /* output.c */
72 psh->output.bufsize = OUTBUFSIZ;
73 psh->output.fd = 1;
74 psh->output.psh = psh;
75 psh->errout.bufsize = 100;
76 psh->errout.fd = 2;
77 psh->errout.psh = psh;
78 psh->memout.fd = MEM_OUT;
79 psh->memout.psh = psh;
80 psh->out1 = &psh->output;
81 psh->out2 = &psh->errout;
82
83 /* jobs.c */
84 psh->backgndpid = -1;
85#if JOBS
86 psh->curjob = -1;
87#endif
88 psh->ttyfd = -1;
89
90 }
91 return psh;
92}
93
94
95char *sh_getenv(shinstance *psh, const char *var)
96{
97#ifdef SH_PURE_STUB_MODE
98 return NULL;
99#elif defined(SH_STUB_MODE)
100 return getenv(var);
101#else
102#endif
103}
104
105char **sh_environ(shinstance *psh)
106{
107#ifdef SH_PURE_STUB_MODE
108 static char *s_null[2] = {0,0};
109 return &s_null[0];
110#elif defined(SH_STUB_MODE)
111 return environ;
112#else
113#endif
114}
115
116const char *sh_gethomedir(shinstance *psh, const char *user)
117{
118#ifdef SH_PURE_STUB_MODE
119 return NULL;
120#elif defined(SH_STUB_MODE)
121# ifdef _MSC_VER
122 return NULL;
123# else
124 struct passwd *pwd = getpwnam(user);
125 return pwd ? pwd->pw_dir : NULL;
126# endif
127#else
128#endif
129}
130
131int sh_sigaction(shinstance *psh, int signo, const struct shsigaction *newp, struct shsigaction *oldp)
132{
133#ifdef SH_PURE_STUB_MODE
134 return -1;
135#elif defined(SH_STUB_MODE)
136# ifdef _MSC_VER
137 return -1;
138# else
139 struct sigaction old;
140 if (newp)
141 return -1;
142 if (sigaction(signo, NULL, &old))
143 return -1;
144 oldp->sh_flags = old.sa_flags;
145 oldp->sh_handler = old.sa_handler;
146 oldp->sh_mask = old.sa_mask;
147 return 0;
148# endif
149#else
150#endif
151}
152
153shsig_t sh_signal(shinstance *psh, int signo, shsig_t handler)
154{
155 return (shsig_t)-1;
156}
157
158int sh_siginterrupt(shinstance *psh, int signo, int interrupt)
159{
160 return -1;
161}
162
163void sh_sigemptyset(shsigset_t *setp)
164{
165 memset(setp, 0, sizeof(*setp));
166}
167
168int sh_sigprocmask(shinstance *psh, int operation, shsigset_t const *newp, shsigset_t *oldp)
169{
170 return -1;
171}
172
173void sh_abort(shinstance *psh)
174{
175#ifdef SH_PURE_STUB_MODE
176#elif defined(SH_STUB_MODE)
177 abort();
178#else
179#endif
180}
181
182void sh_raise_sigint(shinstance *psh)
183{
184#ifdef SH_PURE_STUB_MODE
185#elif defined(SH_STUB_MODE)
186 raise(SIGINT);
187#else
188#endif
189}
190
191int sh_kill(shinstance *psh, pid_t pid, int signo)
192{
193#ifdef SH_PURE_STUB_MODE
194 return -1;
195#elif defined(SH_STUB_MODE)
196# ifdef _MSC_VER
197 return -1;
198# else
199 //fprintf(stderr, "kill(%d, %d)\n", pid, signo);
200 return kill(pid, signo);
201# endif
202#else
203#endif
204}
205
206int sh_killpg(shinstance *psh, pid_t pgid, int signo)
207{
208#ifdef SH_PURE_STUB_MODE
209 return -1;
210#elif defined(SH_STUB_MODE)
211# ifdef _MSC_VER
212 return -1;
213# else
214 //fprintf(stderr, "killpg(%d, %d)\n", pgid, signo);
215 return killpg(pgid, signo);
216# endif
217#else
218#endif
219}
220
221clock_t sh_times(shinstance *psh, shtms *tmsp)
222{
223#ifdef SH_PURE_STUB_MODE
224 return 0;
225#elif defined(SH_STUB_MODE)
226# ifdef _MSC_VER
227 return 0;
228# else
229 return times(tmsp);
230# endif
231#else
232#endif
233}
234
235int sh_sysconf_clk_tck(void)
236{
237#ifdef SH_PURE_STUB_MODE
238 return 1;
239#else
240# ifdef _MSC_VER
241 return CLK_TCK;
242# else
243 return sysconf(_SC_CLK_TCK);
244# endif
245#endif
246}
247
248pid_t sh_fork(shinstance *psh)
249{
250#ifdef SH_PURE_STUB_MODE
251 return -1;
252#elif defined(SH_STUB_MODE)
253# ifdef _MSC_VER
254 return -1;
255# else
256 return fork();
257# endif
258#else
259#endif
260}
261
262pid_t sh_waitpid(shinstance *psh, pid_t pid, int *statusp, int flags)
263{
264 *statusp = 0;
265#ifdef SH_PURE_STUB_MODE
266 return -1;
267#elif defined(SH_STUB_MODE)
268# ifdef _MSC_VER
269 return -1;
270# else
271 pid = waitpid(pid, statusp, flags);
272 //fprintf(stderr, "waitpid -> %d *statusp=%d (rc=%d) flags=%#x\n", pid, *statusp, WEXITSTATUS(*statusp), flags);
273 return pid;
274# endif
275#else
276#endif
277}
278
279void sh__exit(shinstance *psh, int rc)
280{
281#ifdef SH_PURE_STUB_MODE
282 return -1;
283#elif defined(SH_STUB_MODE)
284 _exit(rc);
285#else
286#endif
287}
288
289int sh_execve(shinstance *psh, const char *exe, const char * const *argv, const char * const *envp)
290{
291#ifdef SH_PURE_STUB_MODE
292 return -1;
293#elif defined(SH_STUB_MODE)
294# ifdef _MSC_VER
295 return -1;
296# else
297 return execve(exe, (char **)argv, (char **)envp);
298# endif
299#else
300#endif
301}
302
303uid_t sh_getuid(shinstance *psh)
304{
305#ifdef SH_PURE_STUB_MODE
306 return 0;
307#elif defined(SH_STUB_MODE)
308# ifdef _MSC_VER
309 return 0;
310# else
311 return getuid();
312# endif
313#else
314#endif
315}
316
317uid_t sh_geteuid(shinstance *psh)
318{
319#ifdef SH_PURE_STUB_MODE
320 return 0;
321#elif defined(SH_STUB_MODE)
322# ifdef _MSC_VER
323 return 0;
324# else
325 return geteuid();
326# endif
327#else
328#endif
329}
330
331gid_t sh_getgid(shinstance *psh)
332{
333#ifdef SH_PURE_STUB_MODE
334 return 0;
335#elif defined(SH_STUB_MODE)
336# ifdef _MSC_VER
337 return 0;
338# else
339 return getgid();
340# endif
341#else
342#endif
343}
344
345gid_t sh_getegid(shinstance *psh)
346{
347#ifdef SH_PURE_STUB_MODE
348 return 0;
349#elif defined(SH_STUB_MODE)
350# ifdef _MSC_VER
351 return 0;
352# else
353 return getegid();
354# endif
355#else
356#endif
357}
358
359pid_t sh_getpid(shinstance *psh)
360{
361#ifdef SH_PURE_STUB_MODE
362 return 0;
363#elif defined(SH_STUB_MODE)
364# ifdef _MSC_VER
365 return _getpid();
366# else
367 return getpid();
368# endif
369#else
370#endif
371}
372
373pid_t sh_getpgrp(shinstance *psh)
374{
375#ifdef SH_PURE_STUB_MODE
376 return 0;
377#elif defined(SH_STUB_MODE)
378# ifdef _MSC_VER
379 return _getpid();
380# else
381 return getpgrp();
382# endif
383#else
384#endif
385}
386
387pid_t sh_getpgid(shinstance *psh, pid_t pid)
388{
389#ifdef SH_PURE_STUB_MODE
390 return pid;
391#elif defined(SH_STUB_MODE)
392# ifdef _MSC_VER
393 return pid;
394# else
395 return getpgid(pid);
396# endif
397#else
398#endif
399}
400
401int sh_setpgid(shinstance *psh, pid_t pid, pid_t pgid)
402{
403#ifdef SH_PURE_STUB_MODE
404 return -1;
405#elif defined(SH_STUB_MODE)
406# ifdef _MSC_VER
407 return -1;
408# else
409 int rc;
410 rc = setpgid(pid, pgid);
411 //fprintf(stderr, "setpgid(%d,%d) -> %d\n", pid, pgid, rc);
412 return rc;
413# endif
414#else
415#endif
416}
417
418pid_t sh_tcgetpgrp(shinstance *psh, int fd)
419{
420#ifdef SH_PURE_STUB_MODE
421 return -1;
422#elif defined(SH_STUB_MODE)
423# ifdef _MSC_VER
424 return -1;
425# else
426 return tcgetpgrp(fd);
427# endif
428#else
429#endif
430}
431
432int sh_tcsetpgrp(shinstance *psh, int fd, pid_t pgrp)
433{
434#ifdef SH_PURE_STUB_MODE
435 return -1;
436#elif defined(SH_STUB_MODE)
437# ifdef _MSC_VER
438 return -1;
439# else
440 return tcsetpgrp(fd, pgrp);
441# endif
442#else
443#endif
444}
445
446int sh_getrlimit(shinstance *psh, int resid, shrlimit *limp)
447{
448#ifdef SH_PURE_STUB_MODE
449 return -1;
450#elif defined(SH_STUB_MODE)
451# ifdef _MSC_VER
452 return -1;
453# else
454 return getrlimit(resid, limp);
455# endif
456#else
457#endif
458}
459
460int sh_setrlimit(shinstance *psh, int resid, const shrlimit *limp)
461{
462#ifdef SH_PURE_STUB_MODE
463 return -1;
464#elif defined(SH_STUB_MODE)
465# ifdef _MSC_VER
466 return -1;
467# else
468 return setrlimit(resid, limp);
469# endif
470#else
471#endif
472}
473
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