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Cygwin::mount_table, Cygwin::mount_flags
[perl5.git] / cygwin / cygwin.c
CommitLineData
5db16f6a
FE
1/*
2 * Cygwin extras
3 */
4
5#include "EXTERN.h"
6#include "perl.h"
7#undef USE_DYNAMIC_LOADING
8#include "XSUB.h"
9
6b49d266 10#include <unistd.h>
b4bcd662 11#include <process.h>
49fd6edc 12#include <sys/cygwin.h>
a25ce5f3 13#include <mntent.h>
6d7e4387 14#include <alloca.h>
9fb265f7 15#include <dlfcn.h>
5db16f6a 16
b4bcd662
GS
17/*
18 * pp_system() implemented via spawn()
19 * - more efficient and useful when embedding Perl in non-Cygwin apps
20 * - code mostly borrowed from djgpp.c
21 */
22static int
23do_spawnvp (const char *path, const char * const *argv)
24{
acfe0abc 25 dTHX;
b4bcd662
GS
26 Sigsave_t ihand,qhand;
27 int childpid, result, status;
28
ec1aec95
YST
29 rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
30 rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
b4bcd662
GS
31 childpid = spawnvp(_P_NOWAIT,path,argv);
32 if (childpid < 0) {
33 status = -1;
411caa50 34 if(ckWARN(WARN_EXEC))
f98bc0c6 35 Perl_warner(aTHX_ packWARN(WARN_EXEC),"Can't spawn \"%s\": %s",
b4bcd662 36 path,Strerror (errno));
b4bcd662
GS
37 } else {
38 do {
39 result = wait4pid(childpid, &status, 0);
40 } while (result == -1 && errno == EINTR);
41 if(result < 0)
42 status = -1;
43 }
44 (void)rsignal_restore(SIGINT, &ihand);
45 (void)rsignal_restore(SIGQUIT, &qhand);
46 return status;
47}
48
49int
50do_aspawn (SV *really, void **mark, void **sp)
51{
acfe0abc 52 dTHX;
b4bcd662
GS
53 int rc;
54 char **a,*tmps,**argv;
55 STRLEN n_a;
56
57 if (sp<=mark)
58 return -1;
59 a=argv=(char**) alloca ((sp-mark+3)*sizeof (char*));
60
61 while (++mark <= sp)
62 if (*mark)
667e2948 63 *a++ = SvPVx((SV *)*mark, n_a);
b4bcd662
GS
64 else
65 *a++ = "";
66 *a = Nullch;
67
68 if (argv[0][0] != '/' && argv[0][0] != '\\'
69 && !(argv[0][0] && argv[0][1] == ':'
70 && (argv[0][2] == '/' || argv[0][2] != '\\'))
71 ) /* will swawnvp use PATH? */
72 TAINT_ENV(); /* testing IFS here is overkill, probably */
73
74 if (really && *(tmps = SvPV(really, n_a)))
75 rc=do_spawnvp (tmps,(const char * const *)argv);
76 else
77 rc=do_spawnvp (argv[0],(const char *const *)argv);
78
79 return rc;
80}
81
82int
83do_spawn (char *cmd)
84{
acfe0abc 85 dTHX;
b4bcd662
GS
86 char **a,*s,*metachars = "$&*(){}[]'\";\\?>|<~`\n";
87 const char *command[4];
88
89 while (*cmd && isSPACE(*cmd))
90 cmd++;
91
92 if (strnEQ (cmd,"/bin/sh",7) && isSPACE (cmd[7]))
93 cmd+=5;
94
95 /* save an extra exec if possible */
96 /* see if there are shell metacharacters in it */
97 if (strstr (cmd,"..."))
98 goto doshell;
99 if (*cmd=='.' && isSPACE (cmd[1]))
100 goto doshell;
101 if (strnEQ (cmd,"exec",4) && isSPACE (cmd[4]))
102 goto doshell;
103 for (s=cmd; *s && isALPHA (*s); s++) ; /* catch VAR=val gizmo */
104 if (*s=='=')
105 goto doshell;
106
107 for (s=cmd; *s; s++)
108 if (strchr (metachars,*s))
109 {
110 if (*s=='\n' && s[1]=='\0')
111 {
112 *s='\0';
113 break;
114 }
115 doshell:
116 command[0] = "sh";
117 command[1] = "-c";
118 command[2] = cmd;
119 command[3] = NULL;
120
121 return do_spawnvp("sh",command);
122 }
123
a02a5408 124 Newx (PL_Argv,(s-cmd)/2+2,char*);
b4bcd662
GS
125 PL_Cmd=savepvn (cmd,s-cmd);
126 a=PL_Argv;
127 for (s=PL_Cmd; *s;) {
128 while (*s && isSPACE (*s)) s++;
129 if (*s)
130 *(a++)=s;
131 while (*s && !isSPACE (*s)) s++;
132 if (*s)
133 *s++='\0';
134 }
135 *a=Nullch;
136 if (!PL_Argv[0])
137 return -1;
138
139 return do_spawnvp(PL_Argv[0],(const char * const *)PL_Argv);
140}
5db16f6a
FE
141
142/* see also Cwd.pm */
5db16f6a
FE
143XS(Cygwin_cwd)
144{
145 dXSARGS;
146 char *cwd;
147
148 if(items != 0)
149 Perl_croak(aTHX_ "Usage: Cwd::cwd()");
47dafe4d 150 if((cwd = getcwd(NULL, -1))) {
5db16f6a 151 ST(0) = sv_2mortal(newSVpv(cwd, 0));
a236cecb 152 free(cwd);
6be3b590
JH
153#ifndef INCOMPLETE_TAINTS
154 SvTAINTED_on(ST(0));
155#endif
5db16f6a
FE
156 XSRETURN(1);
157 }
158 XSRETURN_UNDEF;
159}
160
49fd6edc
YST
161XS(XS_Cygwin_pid_to_winpid)
162{
163 dXSARGS;
d2dc0126
YST
164 dXSTARG;
165 pid_t pid, RETVAL;
166
49fd6edc
YST
167 if (items != 1)
168 Perl_croak(aTHX_ "Usage: Cygwin::pid_to_winpid(pid)");
d2dc0126
YST
169
170 pid = (pid_t)SvIV(ST(0));
171
49fd6edc
YST
172 if ((RETVAL = cygwin_internal(CW_CYGWIN_PID_TO_WINPID, pid)) > 0) {
173 XSprePUSH; PUSHi((IV)RETVAL);
174 XSRETURN(1);
175 }
176 XSRETURN_UNDEF;
177}
178
49fd6edc
YST
179XS(XS_Cygwin_winpid_to_pid)
180{
181 dXSARGS;
d2dc0126
YST
182 dXSTARG;
183 pid_t pid, RETVAL;
184
49fd6edc
YST
185 if (items != 1)
186 Perl_croak(aTHX_ "Usage: Cygwin::winpid_to_pid(pid)");
d2dc0126
YST
187
188 pid = (pid_t)SvIV(ST(0));
189
49fd6edc
YST
190 if ((RETVAL = cygwin32_winpid_to_pid(pid)) > 0) {
191 XSprePUSH; PUSHi((IV)RETVAL);
192 XSRETURN(1);
193 }
194 XSRETURN_UNDEF;
195}
196
15414d2b
RU
197XS(XS_Cygwin_win_to_posix_path)
198{
199 dXSARGS;
200 int absolute_flag = 0;
201 STRLEN len;
202 int err;
203 char *pathname, *buf;
204
205 if (items < 1 || items > 2)
206 Perl_croak(aTHX_ "Usage: Cygwin::win_to_posix_path(pathname, [absolute])");
207
208 pathname = SvPV(ST(0), len);
209 if (items == 2)
210 absolute_flag = SvTRUE(ST(1));
211
212 if (!len)
213 Perl_croak(aTHX_ "can't convert empty path");
214 buf = (char *) safemalloc (len + 260 + 1001);
215
216 if (absolute_flag)
217 err = cygwin_conv_to_full_posix_path(pathname, buf);
218 else
219 err = cygwin_conv_to_posix_path(pathname, buf);
220 if (!err) {
221 ST(0) = sv_2mortal(newSVpv(buf, 0));
222 safefree(buf);
223 XSRETURN(1);
224 } else {
225 safefree(buf);
226 XSRETURN_UNDEF;
227 }
228}
229
230XS(XS_Cygwin_posix_to_win_path)
231{
232 dXSARGS;
233 int absolute_flag = 0;
234 STRLEN len;
235 int err;
236 char *pathname, *buf;
237
238 if (items < 1 || items > 2)
239 Perl_croak(aTHX_ "Usage: Cygwin::posix_to_win_path(pathname, [absolute])");
240
241 pathname = SvPV(ST(0), len);
242 if (items == 2)
243 absolute_flag = SvTRUE(ST(1));
244
245 if (!len)
246 Perl_croak(aTHX_ "can't convert empty path");
247 buf = (char *) safemalloc(len + 260 + 1001);
248
249 if (absolute_flag)
250 err = cygwin_conv_to_full_win32_path(pathname, buf);
251 else
252 err = cygwin_conv_to_win32_path(pathname, buf);
253 if (!err) {
254 ST(0) = sv_2mortal(newSVpv(buf, 0));
255 safefree(buf);
256 XSRETURN(1);
257 } else {
258 safefree(buf);
259 XSRETURN_UNDEF;
260 }
261}
262
a25ce5f3
RU
263XS(XS_Cygwin_mount_table)
264{
265 dXSARGS;
266 struct mntent *mnt;
267
268 if (items != 0)
269 Perl_croak(aTHX_ "Usage: Cygwin::mount_table");
270 /* => array of [mnt_dir mnt_fsname mnt_type mnt_opts] */
271
272 setmntent (0, 0);
273 while ((mnt = getmntent (0))) {
274 AV* av = newAV();
275 av_push(av, newSVpvn(mnt->mnt_dir, strlen(mnt->mnt_dir)));
276 av_push(av, newSVpvn(mnt->mnt_fsname, strlen(mnt->mnt_fsname)));
277 av_push(av, newSVpvn(mnt->mnt_type, strlen(mnt->mnt_type)));
278 av_push(av, newSVpvn(mnt->mnt_opts, strlen(mnt->mnt_opts)));
279 XPUSHs(sv_2mortal(newRV_noinc((SV*)av)));
280 }
281 endmntent (0);
282 PUTBACK;
283}
284
285XS(XS_Cygwin_mount_flags)
286{
287 dXSARGS;
288 char *pathname;
289 char flags[260];
290
291 if (items != 1)
292 Perl_croak(aTHX_ "Usage: Cygwin::mount_flags(mnt_dir)");
293
294 pathname = SvPV_nolen(ST(0));
295
296 /* TODO: check for cygdrive registry setting. use CW_GET_CYGDRIVE_INFO then
297 */
298 if (!strcmp(pathname, "/cygdrive")) {
299 char user[260];
300 char system[260];
301 char user_flags[260];
302 char system_flags[260];
303 cygwin_internal (CW_GET_CYGDRIVE_INFO, user, system, user_flags,
304 system_flags);
305 if (strlen(system) > 0)
306 strcpy (flags, system_flags);
307 if (strlen(user) > 0)
308 strcpy(flags, user_flags);
309 if (strlen(flags) > 0)
310 strcat(flags, ",");
311 strcat(flags, "cygdrive");
312 ST(0) = sv_2mortal(newSVpv(flags, 0));
313 XSRETURN(1);
314 } else {
315 struct mntent *mnt;
316 setmntent (0, 0);
317 while ((mnt = getmntent (0))) {
318 if (!strcmp(pathname, mnt->mnt_dir)) {
319 strcpy(flags, mnt->mnt_type);
320 if (strlen(mnt->mnt_opts) > 0) {
321 strcat(flags, ",");
322 strcat(flags, mnt->mnt_opts);
323 }
324 break;
325 }
326 }
327 endmntent (0);
328 ST(0) = sv_2mortal(newSVpv(flags, 0));
329 XSRETURN(1);
330 }
331}
332
15414d2b
RU
333XS(XS_Cygwin_is_binmount)
334{
335 dXSARGS;
336 char *pathname;
337
338 if (items != 1)
339 Perl_croak(aTHX_ "Usage: Cygwin::is_binmount(pathname)");
340
341 pathname = SvPV_nolen(ST(0));
342
343 ST(0) = boolSV(cygwin_internal(CW_GET_BINMODE, pathname));
344 XSRETURN(1);
345}
346
347XS(XS_Cygwin_is_textmount)
348{
349 dXSARGS;
350 char *pathname;
351
352 if (items != 1)
353 Perl_croak(aTHX_ "Usage: Cygwin::is_textmount(pathname)");
354
355 pathname = SvPV_nolen(ST(0));
356
357 ST(0) = boolSV(!cygwin_internal(CW_GET_BINMODE, pathname));
358 XSRETURN(1);
359}
49fd6edc 360
5db16f6a
FE
361void
362init_os_extras(void)
363{
5db16f6a 364 dTHX;
9fb265f7
JD
365 char *file = __FILE__;
366 void *handle;
5db16f6a
FE
367
368 newXS("Cwd::cwd", Cygwin_cwd, file);
15414d2b
RU
369 newXSproto("Cygwin::winpid_to_pid", XS_Cygwin_winpid_to_pid, file, "$");
370 newXSproto("Cygwin::pid_to_winpid", XS_Cygwin_pid_to_winpid, file, "$");
371 newXSproto("Cygwin::win_to_posix_path", XS_Cygwin_win_to_posix_path, file, "$;$");
372 newXSproto("Cygwin::posix_to_win_path", XS_Cygwin_posix_to_win_path, file, "$;$");
a25ce5f3
RU
373 newXSproto("Cygwin::mount_table", XS_Cygwin_mount_table, file, "");
374 newXSproto("Cygwin::mount_flags", XS_Cygwin_mount_flags, file, "$");
15414d2b
RU
375 newXSproto("Cygwin::is_binmount", XS_Cygwin_is_binmount, file, "$");
376 newXSproto("Cygwin::is_textmount", XS_Cygwin_is_textmount, file, "$");
78ff2d7b 377
9fb265f7
JD
378 /* Initialize Win32CORE if it has been statically linked. */
379 handle = dlopen(NULL, RTLD_LAZY);
380 if (handle) {
381 void (*pfn_init)(pTHX);
382 pfn_init = (void (*)(pTHX))dlsym(handle, "init_Win32CORE");
383 if (pfn_init)
384 pfn_init(aTHX);
385 dlclose(handle);
78ff2d7b 386 }
5db16f6a 387}