Commit | Line | Data |
748a9306 |
1 | /* vms.c |
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2 | * |
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3 | * VMS-specific routines for perl5 |
4 | * |
5 | * Last revised: 09-Mar-1995 by Charles Bailey bailey@genetics.upenn.edu |
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6 | */ |
7 | |
8 | #include <acedef.h> |
9 | #include <acldef.h> |
10 | #include <armdef.h> |
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11 | #include <atrdef.h> |
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12 | #include <chpdef.h> |
13 | #include <descrip.h> |
14 | #include <dvidef.h> |
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15 | #include <fibdef.h> |
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16 | #include <float.h> |
17 | #include <fscndef.h> |
18 | #include <iodef.h> |
19 | #include <jpidef.h> |
20 | #include <libdef.h> |
21 | #include <lib$routines.h> |
22 | #include <lnmdef.h> |
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23 | #include <prvdef.h> |
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24 | #include <psldef.h> |
25 | #include <rms.h> |
26 | #include <shrdef.h> |
27 | #include <ssdef.h> |
28 | #include <starlet.h> |
29 | #include <stsdef.h> |
30 | #include <syidef.h> |
748a9306 |
31 | #include <uaidef.h> |
32 | #include <uicdef.h> |
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33 | |
34 | #include "EXTERN.h" |
35 | #include "perl.h" |
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36 | #include "XSUB.h" |
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37 | |
38 | struct itmlst_3 { |
39 | unsigned short int buflen; |
40 | unsigned short int itmcode; |
41 | void *bufadr; |
748a9306 |
42 | unsigned short int *retlen; |
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43 | }; |
44 | |
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45 | static char * |
46 | my_trnlnm(char *lnm, char *eqv) |
47 | { |
48 | static char __my_trnlnm_eqv[LNM$C_NAMLENGTH+1]; |
49 | unsigned short int eqvlen; |
50 | unsigned long int retsts, attr = LNM$M_CASE_BLIND; |
51 | $DESCRIPTOR(tabdsc,"LNM$FILE_DEV"); |
52 | struct dsc$descriptor_s lnmdsc = {0,DSC$K_DTYPE_T,DSC$K_CLASS_S,0}; |
53 | struct itmlst_3 lnmlst[2] = {{LNM$C_NAMLENGTH, LNM$_STRING,0, &eqvlen}, |
54 | {0, 0, 0, 0}}; |
55 | |
56 | if (!eqv) eqv = __my_trnlnm_eqv; |
57 | lnmlst[0].bufadr = (void *)eqv; |
58 | lnmdsc.dsc$a_pointer = lnm; |
59 | lnmdsc.dsc$w_length = strlen(lnm); |
60 | retsts = sys$trnlnm(&attr,&tabdsc,&lnmdsc,0,lnmlst); |
61 | if (retsts == SS$_NOLOGNAM || retsts == SS$_IVLOGNAM) return Nullch; |
62 | else if (retsts & 1) { |
63 | eqv[eqvlen] = '\0'; |
64 | return eqv; |
65 | } |
66 | _ckvmssts(retsts); /* Must be an error */ |
67 | return Nullch; /* Not reached, assuming _ckvmssts() bails out */ |
68 | } |
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69 | |
70 | /* my_getenv |
71 | * Translate a logical name. Substitute for CRTL getenv() to avoid |
72 | * memory leak, and to keep my_getenv() and my_setenv() in the same |
73 | * domain (mostly - my_getenv() need not return a translation from |
74 | * the process logical name table) |
75 | * |
76 | * Note: Uses static buffer -- not thread-safe! |
77 | */ |
78 | /*{{{ char *my_getenv(char *lnm)*/ |
79 | char * |
80 | my_getenv(char *lnm) |
81 | { |
82 | static char __my_getenv_eqv[LNM$C_NAMLENGTH+1]; |
83 | char uplnm[LNM$C_NAMLENGTH], *cp1, *cp2; |
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84 | |
85 | for (cp1 = lnm, cp2= uplnm; *cp1; cp1++, cp2++) *cp2 = _toupper(*cp1); |
86 | *cp2 = '\0'; |
748a9306 |
87 | if (cp1 - lnm == 7 && !strncmp(uplnm,"DEFAULT",7)) { |
88 | getcwd(__my_getenv_eqv,sizeof __my_getenv_eqv); |
89 | return __my_getenv_eqv; |
90 | } |
91 | else if (my_trnlnm(uplnm,__my_getenv_eqv) != NULL) { |
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92 | return __my_getenv_eqv; |
93 | } |
94 | else { |
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95 | unsigned long int retsts; |
96 | struct dsc$descriptor_s symdsc = {0,DSC$K_DTYPE_T,DSC$K_CLASS_S,0}, |
97 | valdsc = {sizeof __my_getenv_eqv,DSC$K_DTYPE_T, |
98 | DSC$K_CLASS_S, __my_getenv_eqv}; |
99 | symdsc.dsc$w_length = cp1 - lnm; |
100 | symdsc.dsc$a_pointer = uplnm; |
101 | retsts = lib$get_symbol(&symdsc,&valdsc,&(valdsc.dsc$w_length),0); |
102 | if (retsts == LIB$_INVSYMNAM) return Nullch; |
103 | if (retsts != LIB$_NOSUCHSYM) { |
104 | /* We want to return only logical names or CRTL Unix emulations */ |
105 | if (retsts & 1) return Nullch; |
106 | _ckvmssts(retsts); |
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107 | } |
748a9306 |
108 | else return getenv(lnm); /* Try for CRTL emulation of a Unix/POSIX name */ |
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109 | } |
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110 | return Nullch; |
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111 | |
112 | } /* end of my_getenv() */ |
113 | /*}}}*/ |
114 | |
115 | /*{{{ void my_setenv(char *lnm, char *eqv)*/ |
116 | void |
117 | my_setenv(char *lnm,char *eqv) |
118 | /* Define a supervisor-mode logical name in the process table. |
119 | * In the future we'll add tables, attribs, and acmodes, |
120 | * probably through a different call. |
121 | */ |
122 | { |
123 | char uplnm[LNM$C_NAMLENGTH], *cp1, *cp2; |
124 | unsigned long int retsts, usermode = PSL$C_USER; |
125 | $DESCRIPTOR(tabdsc,"LNM$PROCESS"); |
126 | struct dsc$descriptor_s lnmdsc = {0,DSC$K_DTYPE_T,DSC$K_CLASS_S,uplnm}, |
127 | eqvdsc = {0,DSC$K_DTYPE_T,DSC$K_CLASS_S,0}; |
128 | |
129 | for(cp1 = lnm, cp2 = uplnm; *cp1; cp1++, cp2++) *cp2 = _toupper(*cp1); |
130 | lnmdsc.dsc$w_length = cp1 - lnm; |
131 | |
132 | if (!eqv || !*eqv) { /* we're deleting a logical name */ |
133 | retsts = sys$dellnm(&tabdsc,&lnmdsc,&usermode); /* try user mode first */ |
748a9306 |
134 | if (retsts == SS$_IVLOGNAM) return; |
135 | if (retsts != SS$_NOLOGNAM) _ckvmssts(retsts); |
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136 | if (!(retsts & 1)) { |
137 | retsts = lib$delete_logical(&lnmdsc,&tabdsc); /* then supervisor mode */ |
748a9306 |
138 | if (retsts != SS$_NOLOGNAM) _ckvmssts(retsts); |
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139 | } |
140 | } |
141 | else { |
142 | eqvdsc.dsc$w_length = strlen(eqv); |
143 | eqvdsc.dsc$a_pointer = eqv; |
144 | |
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145 | _ckvmssts(lib$set_logical(&lnmdsc,&eqvdsc,&tabdsc,0,0)); |
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146 | } |
147 | |
148 | } /* end of my_setenv() */ |
149 | /*}}}*/ |
150 | |
151 | static char *do_fileify_dirspec(char *, char *, int); |
152 | static char *do_tovmsspec(char *, char *, int); |
153 | |
154 | /*{{{int do_rmdir(char *name)*/ |
155 | int |
156 | do_rmdir(char *name) |
157 | { |
158 | char dirfile[NAM$C_MAXRSS+1]; |
159 | int retval; |
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160 | struct stat st; |
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161 | |
162 | if (do_fileify_dirspec(name,dirfile,0) == NULL) return -1; |
163 | if (flex_stat(dirfile,&st) || !S_ISDIR(st.st_mode)) retval = -1; |
164 | else retval = kill_file(dirfile); |
165 | return retval; |
166 | |
167 | } /* end of do_rmdir */ |
168 | /*}}}*/ |
169 | |
170 | /* kill_file |
171 | * Delete any file to which user has control access, regardless of whether |
172 | * delete access is explicitly allowed. |
173 | * Limitations: User must have write access to parent directory. |
174 | * Does not block signals or ASTs; if interrupted in midstream |
175 | * may leave file with an altered ACL. |
176 | * HANDLE WITH CARE! |
177 | */ |
178 | /*{{{int kill_file(char *name)*/ |
179 | int |
180 | kill_file(char *name) |
181 | { |
182 | char vmsname[NAM$C_MAXRSS+1]; |
183 | unsigned long int jpicode = JPI$_UIC, type = ACL$C_FILE; |
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184 | unsigned long int cxt = 0, aclsts, fndsts, rmsts = -1; |
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185 | struct dsc$descriptor_s fildsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; |
186 | struct myacedef { |
748a9306 |
187 | unsigned char myace$b_length; |
188 | unsigned char myace$b_type; |
189 | unsigned short int myace$w_flags; |
190 | unsigned long int myace$l_access; |
191 | unsigned long int myace$l_ident; |
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192 | } newace = { sizeof(struct myacedef), ACE$C_KEYID, 0, |
193 | ACE$M_READ | ACE$M_WRITE | ACE$M_DELETE | ACE$M_CONTROL, 0}, |
194 | oldace = { sizeof(struct myacedef), ACE$C_KEYID, 0, 0, 0}; |
195 | struct itmlst_3 |
748a9306 |
196 | findlst[3] = {{sizeof oldace, ACL$C_FNDACLENT, &oldace, 0}, |
197 | {sizeof oldace, ACL$C_READACE, &oldace, 0},{0,0,0,0}}, |
198 | addlst[2] = {{sizeof newace, ACL$C_ADDACLENT, &newace, 0},{0,0,0,0}}, |
199 | dellst[2] = {{sizeof newace, ACL$C_DELACLENT, &newace, 0},{0,0,0,0}}, |
200 | lcklst[2] = {{sizeof newace, ACL$C_WLOCK_ACL, &newace, 0},{0,0,0,0}}, |
201 | ulklst[2] = {{sizeof newace, ACL$C_UNLOCK_ACL, &newace, 0},{0,0,0,0}}; |
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202 | |
203 | if (!remove(name)) return 0; /* Can we just get rid of it? */ |
204 | |
205 | /* No, so we get our own UIC to use as a rights identifier, |
206 | * and the insert an ACE at the head of the ACL which allows us |
207 | * to delete the file. |
208 | */ |
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209 | _ckvmssts(lib$getjpi(&jpicode,0,0,&(oldace.myace$l_ident),0,0)); |
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210 | if (do_tovmsspec(name,vmsname,0) == NULL) return -1; |
211 | fildsc.dsc$w_length = strlen(vmsname); |
212 | fildsc.dsc$a_pointer = vmsname; |
213 | cxt = 0; |
748a9306 |
214 | newace.myace$l_ident = oldace.myace$l_ident; |
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215 | if (!((aclsts = sys$change_acl(0,&type,&fildsc,lcklst,0,0,0)) & 1)) { |
748a9306 |
216 | set_errno(EVMSERR); |
217 | set_vaxc_errno(aclsts); |
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218 | return -1; |
219 | } |
220 | /* Grab any existing ACEs with this identifier in case we fail */ |
221 | aclsts = fndsts = sys$change_acl(0,&type,&fildsc,findlst,0,0,&cxt); |
222 | if ( fndsts & 1 || fndsts == SS$_ACLEMPTY || fndsts == SS$_NOENTRY) { |
223 | /* Add the new ACE . . . */ |
224 | if (!((aclsts = sys$change_acl(0,&type,&fildsc,addlst,0,0,0)) & 1)) |
225 | goto yourroom; |
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226 | if ((rmsts = remove(name))) { |
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227 | /* We blew it - dir with files in it, no write priv for |
228 | * parent directory, etc. Put things back the way they were. */ |
229 | if (!((aclsts = sys$change_acl(0,&type,&fildsc,dellst,0,0,0)) & 1)) |
230 | goto yourroom; |
231 | if (fndsts & 1) { |
232 | addlst[0].bufadr = &oldace; |
233 | if (!((aclsts = sys$change_acl(0,&type,&fildsc,addlst,0,0,&cxt)) & 1)) |
234 | goto yourroom; |
235 | } |
236 | } |
237 | } |
238 | |
239 | yourroom: |
240 | if (rmsts) { |
241 | fndsts = sys$change_acl(0,&type,&fildsc,ulklst,0,0,0); |
242 | if (aclsts & 1) aclsts = fndsts; |
243 | } |
244 | if (!(aclsts & 1)) { |
748a9306 |
245 | set_errno(EVMSERR); |
246 | set_vaxc_errno(aclsts); |
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247 | return -1; |
248 | } |
249 | |
250 | return rmsts; |
251 | |
252 | } /* end of kill_file() */ |
253 | /*}}}*/ |
254 | |
748a9306 |
255 | /* my_utime - update modification time of a file |
256 | * calling sequence is identical to POSIX utime(), but under |
257 | * VMS only the modification time is changed; ODS-2 does not |
258 | * maintain access times. Restrictions differ from the POSIX |
259 | * definition in that the time can be changed as long as the |
260 | * caller has permission to execute the necessary IO$_MODIFY $QIO; |
261 | * no separate checks are made to insure that the caller is the |
262 | * owner of the file or has special privs enabled. |
263 | * Code here is based on Joe Meadows' FILE utility. |
264 | */ |
265 | |
266 | /* Adjustment from Unix epoch (01-JAN-1970 00:00:00.00) |
267 | * to VMS epoch (01-JAN-1858 00:00:00.00) |
268 | * in 100 ns intervals. |
269 | */ |
270 | static const long int utime_baseadjust[2] = { 0x4beb4000, 0x7c9567 }; |
271 | |
272 | /*{{{int my_utime(char *path, struct utimbuf *utimes)*/ |
273 | int my_utime(char *file, struct utimbuf *utimes) |
274 | { |
275 | register int i; |
276 | long int bintime[2], len = 2, lowbit, unixtime, |
277 | secscale = 10000000; /* seconds --> 100 ns intervals */ |
278 | unsigned long int chan, iosb[2], retsts; |
279 | char vmsspec[NAM$C_MAXRSS+1], rsa[NAM$C_MAXRSS], esa[NAM$C_MAXRSS]; |
280 | struct FAB myfab = cc$rms_fab; |
281 | struct NAM mynam = cc$rms_nam; |
282 | struct atrdef myatr[2] = {{sizeof bintime, ATR$C_REVDATE, bintime}, {0,0,0}}; |
283 | struct fibdef myfib; |
284 | struct dsc$descriptor fibdsc = {sizeof(myfib), DSC$K_DTYPE_Z, DSC$K_CLASS_S,(char *) &myfib}, |
285 | devdsc = {0,DSC$K_DTYPE_T, DSC$K_CLASS_S,0}, |
286 | fnmdsc = {0,DSC$K_DTYPE_T, DSC$K_CLASS_S,0}; |
287 | |
288 | if (file == NULL || *file == '\0') { |
289 | set_errno(ENOENT); |
290 | set_vaxc_errno(LIB$_INVARG); |
291 | return -1; |
292 | } |
293 | if (tovmsspec(file,vmsspec) == NULL) return -1; |
294 | |
295 | if (utimes != NULL) { |
296 | /* Convert Unix time (seconds since 01-JAN-1970 00:00:00.00) |
297 | * to VMS quadword time (100 nsec intervals since 01-JAN-1858 00:00:00.00). |
298 | * Since time_t is unsigned long int, and lib$emul takes a signed long int |
299 | * as input, we force the sign bit to be clear by shifting unixtime right |
300 | * one bit, then multiplying by an extra factor of 2 in lib$emul(). |
301 | */ |
302 | lowbit = (utimes->modtime & 1) ? secscale : 0; |
303 | unixtime = (long int) utimes->modtime; |
304 | unixtime >> 1; secscale << 1; |
305 | retsts = lib$emul(&secscale, &unixtime, &lowbit, bintime); |
306 | if (!(retsts & 1)) { |
307 | set_errno(EVMSERR); |
308 | set_vaxc_errno(retsts); |
309 | return -1; |
310 | } |
311 | retsts = lib$addx(bintime,utime_baseadjust,bintime,&len); |
312 | if (!(retsts & 1)) { |
313 | set_errno(EVMSERR); |
314 | set_vaxc_errno(retsts); |
315 | return -1; |
316 | } |
317 | } |
318 | else { |
319 | /* Just get the current time in VMS format directly */ |
320 | retsts = sys$gettim(bintime); |
321 | if (!(retsts & 1)) { |
322 | set_errno(EVMSERR); |
323 | set_vaxc_errno(retsts); |
324 | return -1; |
325 | } |
326 | } |
327 | |
328 | myfab.fab$l_fna = vmsspec; |
329 | myfab.fab$b_fns = (unsigned char) strlen(vmsspec); |
330 | myfab.fab$l_nam = &mynam; |
331 | mynam.nam$l_esa = esa; |
332 | mynam.nam$b_ess = (unsigned char) sizeof esa; |
333 | mynam.nam$l_rsa = rsa; |
334 | mynam.nam$b_rss = (unsigned char) sizeof rsa; |
335 | |
336 | /* Look for the file to be affected, letting RMS parse the file |
337 | * specification for us as well. I have set errno using only |
338 | * values documented in the utime() man page for VMS POSIX. |
339 | */ |
340 | retsts = sys$parse(&myfab,0,0); |
341 | if (!(retsts & 1)) { |
342 | set_vaxc_errno(retsts); |
343 | if (retsts == RMS$_PRV) set_errno(EACCES); |
344 | else if (retsts == RMS$_DIR) set_errno(ENOTDIR); |
345 | else set_errno(EVMSERR); |
346 | return -1; |
347 | } |
348 | retsts = sys$search(&myfab,0,0); |
349 | if (!(retsts & 1)) { |
350 | set_vaxc_errno(retsts); |
351 | if (retsts == RMS$_PRV) set_errno(EACCES); |
352 | else if (retsts == RMS$_FNF) set_errno(ENOENT); |
353 | else set_errno(EVMSERR); |
354 | return -1; |
355 | } |
356 | |
357 | devdsc.dsc$w_length = mynam.nam$b_dev; |
358 | devdsc.dsc$a_pointer = (char *) mynam.nam$l_dev; |
359 | |
360 | retsts = sys$assign(&devdsc,&chan,0,0); |
361 | if (!(retsts & 1)) { |
362 | set_vaxc_errno(retsts); |
363 | if (retsts == SS$_IVDEVNAM) set_errno(ENOTDIR); |
364 | else if (retsts == SS$_NOPRIV) set_errno(EACCES); |
365 | else if (retsts == SS$_NOSUCHDEV) set_errno(ENOTDIR); |
366 | else set_errno(EVMSERR); |
367 | return -1; |
368 | } |
369 | |
370 | fnmdsc.dsc$a_pointer = mynam.nam$l_name; |
371 | fnmdsc.dsc$w_length = mynam.nam$b_name + mynam.nam$b_type + mynam.nam$b_ver; |
372 | |
373 | memset((void *) &myfib, 0, sizeof myfib); |
374 | #ifdef __DECC |
375 | for (i=0;i<3;i++) myfib.fib$w_fid[i] = mynam.nam$w_fid[i]; |
376 | for (i=0;i<3;i++) myfib.fib$w_did[i] = mynam.nam$w_did[i]; |
377 | /* This prevents the revision time of the file being reset to the current |
378 | * time as a reqult of our IO$_MODIFY $QIO. */ |
379 | myfib.fib$l_acctl = FIB$M_NORECORD; |
380 | #else |
381 | for (i=0;i<3;i++) myfib.fib$r_fid_overlay.fib$w_fid[i] = mynam.nam$w_fid[i]; |
382 | for (i=0;i<3;i++) myfib.fib$r_did_overlay.fib$w_did[i] = mynam.nam$w_did[i]; |
383 | myfib.fib$r_acctl_overlay.fib$l_acctl = FIB$M_NORECORD; |
384 | #endif |
385 | retsts = sys$qiow(0,chan,IO$_MODIFY,iosb,0,0,&fibdsc,&fnmdsc,0,0,myatr,0); |
386 | if (retsts & 1) retsts = iosb[0]; |
387 | if (!(retsts & 1)) { |
388 | set_vaxc_errno(retsts); |
389 | if (retsts == SS$_NOPRIV) set_errno(EACCES); |
390 | else set_errno(EVMSERR); |
391 | return -1; |
392 | } |
393 | |
394 | return 0; |
395 | } /* end of my_utime() */ |
396 | /*}}}*/ |
397 | |
a0d0e21e |
398 | static void |
399 | create_mbx(unsigned short int *chan, struct dsc$descriptor_s *namdsc) |
400 | { |
401 | static unsigned long int mbxbufsiz; |
402 | long int syiitm = SYI$_MAXBUF, dviitm = DVI$_DEVNAM; |
403 | |
404 | if (!mbxbufsiz) { |
405 | /* |
406 | * Get the SYSGEN parameter MAXBUF, and the smaller of it and the |
407 | * preprocessor consant BUFSIZ from stdio.h as the size of the |
408 | * 'pipe' mailbox. |
409 | */ |
748a9306 |
410 | _ckvmssts(lib$getsyi(&syiitm, &mbxbufsiz, 0, 0, 0, 0)); |
a0d0e21e |
411 | if (mbxbufsiz > BUFSIZ) mbxbufsiz = BUFSIZ; |
412 | } |
748a9306 |
413 | _ckvmssts(sys$crembx(0,chan,mbxbufsiz,mbxbufsiz,0,0,0)); |
a0d0e21e |
414 | |
748a9306 |
415 | _ckvmssts(lib$getdvi(&dviitm, chan, NULL, NULL, namdsc, &namdsc->dsc$w_length)); |
a0d0e21e |
416 | namdsc->dsc$a_pointer[namdsc->dsc$w_length] = '\0'; |
417 | |
418 | } /* end of create_mbx() */ |
419 | |
420 | /*{{{ my_popen and my_pclose*/ |
421 | struct pipe_details |
422 | { |
423 | struct pipe_details *next; |
748a9306 |
424 | FILE *fp; /* stdio file pointer to pipe mailbox */ |
425 | int pid; /* PID of subprocess */ |
426 | int mode; /* == 'r' if pipe open for reading */ |
427 | int done; /* subprocess has completed */ |
428 | unsigned long int completion; /* termination status of subprocess */ |
a0d0e21e |
429 | }; |
430 | |
748a9306 |
431 | struct exit_control_block |
432 | { |
433 | struct exit_control_block *flink; |
434 | unsigned long int (*exit_routine)(); |
435 | unsigned long int arg_count; |
436 | unsigned long int *status_address; |
437 | unsigned long int exit_status; |
438 | }; |
439 | |
a0d0e21e |
440 | static struct pipe_details *open_pipes = NULL; |
441 | static $DESCRIPTOR(nl_desc, "NL:"); |
442 | static int waitpid_asleep = 0; |
443 | |
748a9306 |
444 | static unsigned long int |
445 | pipe_exit_routine() |
446 | { |
447 | unsigned long int retsts = SS$_NORMAL, abort = SS$_TIMEOUT, sts; |
448 | |
449 | while (open_pipes != NULL) { |
450 | if (!open_pipes->done) { /* Tap them gently on the shoulder . . .*/ |
451 | _ckvmssts(sys$forcex(&open_pipes->pid,0,&abort)); |
452 | sleep(1); |
453 | } |
454 | if (!open_pipes->done) /* We tried to be nice . . . */ |
455 | _ckvmssts(sys$delprc(&open_pipes->pid,0)); |
456 | if (!((sts = my_pclose(open_pipes->fp))&1)) retsts = sts; |
457 | } |
458 | return retsts; |
459 | } |
460 | |
461 | static struct exit_control_block pipe_exitblock = |
462 | {(struct exit_control_block *) 0, |
463 | pipe_exit_routine, 0, &pipe_exitblock.exit_status, 0}; |
464 | |
465 | |
a0d0e21e |
466 | static void |
748a9306 |
467 | popen_completion_ast(struct pipe_details *thispipe) |
a0d0e21e |
468 | { |
748a9306 |
469 | thispipe->done = TRUE; |
a0d0e21e |
470 | if (waitpid_asleep) { |
471 | waitpid_asleep = 0; |
472 | sys$wake(0,0); |
473 | } |
474 | } |
475 | |
476 | /*{{{ FILE *my_popen(char *cmd, char *mode)*/ |
477 | FILE * |
478 | my_popen(char *cmd, char *mode) |
479 | { |
748a9306 |
480 | static int handler_set_up = FALSE; |
a0d0e21e |
481 | char mbxname[64]; |
482 | unsigned short int chan; |
483 | unsigned long int flags=1; /* nowait - gnu c doesn't allow &1 */ |
484 | struct pipe_details *info; |
485 | struct dsc$descriptor_s namdsc = {sizeof mbxname, DSC$K_DTYPE_T, |
486 | DSC$K_CLASS_S, mbxname}, |
487 | cmddsc = {0, DSC$K_DTYPE_T, |
488 | DSC$K_CLASS_S, 0}; |
489 | |
490 | |
491 | New(7001,info,1,struct pipe_details); |
492 | |
a0d0e21e |
493 | /* create mailbox */ |
494 | create_mbx(&chan,&namdsc); |
495 | |
496 | /* open a FILE* onto it */ |
497 | info->fp=fopen(mbxname, mode); |
498 | |
499 | /* give up other channel onto it */ |
748a9306 |
500 | _ckvmssts(sys$dassgn(chan)); |
a0d0e21e |
501 | |
502 | if (!info->fp) |
503 | return Nullfp; |
504 | |
505 | cmddsc.dsc$w_length=strlen(cmd); |
506 | cmddsc.dsc$a_pointer=cmd; |
507 | |
748a9306 |
508 | info->mode = *mode; |
509 | info->done = FALSE; |
510 | info->completion=0; |
511 | |
512 | if (*mode == 'r') { |
513 | _ckvmssts(lib$spawn(&cmddsc, &nl_desc, &namdsc, &flags, |
a0d0e21e |
514 | 0 /* name */, &info->pid, &info->completion, |
748a9306 |
515 | 0, popen_completion_ast,info,0,0,0)); |
a0d0e21e |
516 | } |
517 | else { |
748a9306 |
518 | _ckvmssts(lib$spawn(&cmddsc, &namdsc, 0 /* sys$output */, &flags, |
519 | 0 /* name */, &info->pid, &info->completion, |
520 | 0, popen_completion_ast,info,0,0,0)); |
a0d0e21e |
521 | } |
522 | |
748a9306 |
523 | if (!handler_set_up) { |
524 | _ckvmssts(sys$dclexh(&pipe_exitblock)); |
525 | handler_set_up = TRUE; |
526 | } |
a0d0e21e |
527 | info->next=open_pipes; /* prepend to list */ |
528 | open_pipes=info; |
529 | |
530 | return info->fp; |
531 | } |
532 | /*}}}*/ |
533 | |
534 | /*{{{ I32 my_pclose(FILE *fp)*/ |
535 | I32 my_pclose(FILE *fp) |
536 | { |
537 | struct pipe_details *info, *last = NULL; |
748a9306 |
538 | unsigned long int retsts; |
a0d0e21e |
539 | |
540 | for (info = open_pipes; info != NULL; last = info, info = info->next) |
541 | if (info->fp == fp) break; |
542 | |
543 | if (info == NULL) |
544 | /* get here => no such pipe open */ |
748a9306 |
545 | croak("No such pipe open"); |
546 | |
547 | if (info->done) retsts = info->completion; |
548 | else waitpid(info->pid,(int *) &retsts,0); |
a0d0e21e |
549 | |
a0d0e21e |
550 | fclose(info->fp); |
748a9306 |
551 | |
a0d0e21e |
552 | /* remove from list of open pipes */ |
553 | if (last) last->next = info->next; |
554 | else open_pipes = info->next; |
a0d0e21e |
555 | Safefree(info); |
556 | |
557 | return retsts; |
748a9306 |
558 | |
a0d0e21e |
559 | } /* end of my_pclose() */ |
560 | |
a0d0e21e |
561 | /* sort-of waitpid; use only with popen() */ |
562 | /*{{{unsigned long int waitpid(unsigned long int pid, int *statusp, int flags)*/ |
563 | unsigned long int |
564 | waitpid(unsigned long int pid, int *statusp, int flags) |
565 | { |
566 | struct pipe_details *info; |
a0d0e21e |
567 | |
568 | for (info = open_pipes; info != NULL; info = info->next) |
569 | if (info->pid == pid) break; |
570 | |
571 | if (info != NULL) { /* we know about this child */ |
748a9306 |
572 | while (!info->done) { |
a0d0e21e |
573 | waitpid_asleep = 1; |
574 | sys$hiber(); |
575 | } |
576 | |
577 | *statusp = info->completion; |
578 | return pid; |
579 | } |
580 | else { /* we haven't heard of this child */ |
581 | $DESCRIPTOR(intdsc,"0 00:00:01"); |
582 | unsigned long int ownercode = JPI$_OWNER, ownerpid, mypid; |
748a9306 |
583 | unsigned long int interval[2],sts; |
a0d0e21e |
584 | |
748a9306 |
585 | if (dowarn) { |
586 | _ckvmssts(lib$getjpi(&ownercode,&pid,0,&ownerpid,0,0)); |
587 | _ckvmssts(lib$getjpi(&ownercode,0,0,&mypid,0,0)); |
588 | if (ownerpid != mypid) |
589 | warn("pid %d not a child",pid); |
590 | } |
a0d0e21e |
591 | |
748a9306 |
592 | _ckvmssts(sys$bintim(&intdsc,interval)); |
a0d0e21e |
593 | while ((sts=lib$getjpi(&ownercode,&pid,0,&ownerpid,0,0)) & 1) { |
748a9306 |
594 | _ckvmssts(sys$schdwk(0,0,interval,0)); |
595 | _ckvmssts(sys$hiber()); |
a0d0e21e |
596 | } |
748a9306 |
597 | _ckvmssts(sts); |
a0d0e21e |
598 | |
599 | /* There's no easy way to find the termination status a child we're |
600 | * not aware of beforehand. If we're really interested in the future, |
601 | * we can go looking for a termination mailbox, or chase after the |
602 | * accounting record for the process. |
603 | */ |
604 | *statusp = 0; |
605 | return pid; |
606 | } |
607 | |
608 | } /* end of waitpid() */ |
a0d0e21e |
609 | /*}}}*/ |
610 | /*}}}*/ |
611 | /*}}}*/ |
612 | |
613 | /*{{{ char *my_gconvert(double val, int ndig, int trail, char *buf) */ |
614 | char * |
615 | my_gconvert(double val, int ndig, int trail, char *buf) |
616 | { |
617 | static char __gcvtbuf[DBL_DIG+1]; |
618 | char *loc; |
619 | |
620 | loc = buf ? buf : __gcvtbuf; |
621 | if (val) { |
622 | if (!buf && ndig > DBL_DIG) ndig = DBL_DIG; |
623 | return gcvt(val,ndig,loc); |
624 | } |
625 | else { |
626 | loc[0] = '0'; loc[1] = '\0'; |
627 | return loc; |
628 | } |
629 | |
630 | } |
631 | /*}}}*/ |
632 | |
633 | /* |
634 | ** The following routines are provided to make life easier when |
635 | ** converting among VMS-style and Unix-style directory specifications. |
636 | ** All will take input specifications in either VMS or Unix syntax. On |
637 | ** failure, all return NULL. If successful, the routines listed below |
748a9306 |
638 | ** return a pointer to a buffer containing the appropriately |
a0d0e21e |
639 | ** reformatted spec (and, therefore, subsequent calls to that routine |
640 | ** will clobber the result), while the routines of the same names with |
641 | ** a _ts suffix appended will return a pointer to a mallocd string |
642 | ** containing the appropriately reformatted spec. |
643 | ** In all cases, only explicit syntax is altered; no check is made that |
644 | ** the resulting string is valid or that the directory in question |
645 | ** actually exists. |
646 | ** |
647 | ** fileify_dirspec() - convert a directory spec into the name of the |
648 | ** directory file (i.e. what you can stat() to see if it's a dir). |
649 | ** The style (VMS or Unix) of the result is the same as the style |
650 | ** of the parameter passed in. |
651 | ** pathify_dirspec() - convert a directory spec into a path (i.e. |
652 | ** what you prepend to a filename to indicate what directory it's in). |
653 | ** The style (VMS or Unix) of the result is the same as the style |
654 | ** of the parameter passed in. |
655 | ** tounixpath() - convert a directory spec into a Unix-style path. |
656 | ** tovmspath() - convert a directory spec into a VMS-style path. |
657 | ** tounixspec() - convert any file spec into a Unix-style file spec. |
658 | ** tovmsspec() - convert any file spec into a VMS-style spec. |
659 | */ |
660 | |
748a9306 |
661 | static char *do_tounixspec(char *, char *, int); |
662 | |
a0d0e21e |
663 | /*{{{ char *fileify_dirspec[_ts](char *path, char *buf)*/ |
664 | static char *do_fileify_dirspec(char *dir,char *buf,int ts) |
665 | { |
666 | static char __fileify_retbuf[NAM$C_MAXRSS+1]; |
667 | unsigned long int dirlen, retlen, addmfd = 0; |
668 | char *retspec, *cp1, *cp2, *lastdir; |
748a9306 |
669 | char trndir[NAM$C_MAXRSS+1], vmsdir[NAM$C_MAXRSS+1]; |
a0d0e21e |
670 | |
671 | if (dir == NULL) return NULL; |
748a9306 |
672 | strcpy(trndir,dir); |
673 | while (!strpbrk(trndir,"/]:>") && my_trnlnm(trndir,trndir) != NULL) ; |
674 | dir = trndir; |
a0d0e21e |
675 | |
676 | dirlen = strlen(dir); |
677 | if (!strpbrk(dir,"]:>")) { /* Unix-style path or plain dir name */ |
748a9306 |
678 | if (dir[0] == '.') { |
679 | if (dir[1] == '\0' || (dir[1] == '/' && dir[2] == '\0')) |
680 | return do_fileify_dirspec("[]",buf,ts); |
681 | else if (dir[1] == '.' && |
682 | (dir[2] == '\0' || (dir[2] == '/' && dir[3] == '\0'))) |
683 | return do_fileify_dirspec("[-]",buf,ts); |
684 | } |
a0d0e21e |
685 | if (dir[dirlen-1] == '/') { /* path ends with '/'; just add .dir;1 */ |
686 | dirlen -= 1; /* to last element */ |
687 | lastdir = strrchr(dir,'/'); |
688 | } |
748a9306 |
689 | else if (strstr(trndir,"..") != NULL) { |
690 | /* If we have a relative path, let do_tovmsspec figure it out, |
691 | * rather than repeating the code here */ |
692 | if (do_tovmsspec(trndir,vmsdir,0) == NULL) return NULL; |
693 | if (do_fileify_dirspec(vmsdir,trndir,0) == NULL) return NULL; |
694 | return do_tounixspec(trndir,buf,ts); |
695 | } |
a0d0e21e |
696 | else { |
697 | if (!(lastdir = cp1 = strrchr(dir,'/'))) cp1 = dir; |
698 | if ((cp2 = strchr(cp1,'.'))) { /* look for explicit type */ |
699 | if (toupper(*(cp2+1)) == 'D' && /* Yep. Is it .dir? */ |
700 | toupper(*(cp2+2)) == 'I' && |
701 | toupper(*(cp2+3)) == 'R') { |
702 | if ((cp1 = strchr(cp2,';')) || (cp1 = strchr(cp2+1,'.'))) { |
703 | if (*(cp1+1) != '1' || *(cp1+2) != '\0') { /* Version is not ;1 */ |
748a9306 |
704 | set_errno(ENOTDIR); /* Bzzt. */ |
705 | set_vaxc_errno(RMS$_DIR); |
a0d0e21e |
706 | return NULL; |
707 | } |
708 | } |
709 | dirlen = cp2 - dir; |
710 | } |
711 | else { /* There's a type, and it's not .dir. Bzzt. */ |
748a9306 |
712 | set_errno(ENOTDIR); |
713 | set_vaxc_errno(RMS$_DIR); |
a0d0e21e |
714 | return NULL; |
715 | } |
716 | } |
748a9306 |
717 | } |
718 | /* If we lead off with a device or rooted logical, add the MFD |
719 | if we're specifying a top-level directory. */ |
720 | if (lastdir && *dir == '/') { |
721 | addmfd = 1; |
722 | for (cp1 = lastdir - 1; cp1 > dir; cp1--) { |
723 | if (*cp1 == '/') { |
724 | addmfd = 0; |
725 | break; |
a0d0e21e |
726 | } |
727 | } |
748a9306 |
728 | } |
729 | retlen = dirlen + addmfd ? 13 : 6; |
730 | if (buf) retspec = buf; |
731 | else if (ts) New(7009,retspec,retlen+6,char); |
732 | else retspec = __fileify_retbuf; |
733 | if (addmfd) { |
734 | dirlen = lastdir - dir; |
735 | memcpy(retspec,dir,dirlen); |
736 | strcpy(&retspec[dirlen],"/000000"); |
737 | strcpy(&retspec[dirlen+7],lastdir); |
738 | } |
739 | else { |
740 | memcpy(retspec,dir,dirlen); |
741 | retspec[dirlen] = '\0'; |
a0d0e21e |
742 | } |
743 | /* We've picked up everything up to the directory file name. |
744 | Now just add the type and version, and we're set. */ |
745 | strcat(retspec,".dir;1"); |
746 | return retspec; |
747 | } |
748 | else { /* VMS-style directory spec */ |
749 | char esa[NAM$C_MAXRSS+1], term; |
748a9306 |
750 | unsigned long int cmplen, hasdev, hasdir, hastype, hasver; |
a0d0e21e |
751 | struct FAB dirfab = cc$rms_fab; |
752 | struct NAM savnam, dirnam = cc$rms_nam; |
753 | |
754 | dirfab.fab$b_fns = strlen(dir); |
755 | dirfab.fab$l_fna = dir; |
756 | dirfab.fab$l_nam = &dirnam; |
748a9306 |
757 | dirfab.fab$l_dna = ".DIR;1"; |
758 | dirfab.fab$b_dns = 6; |
a0d0e21e |
759 | dirnam.nam$b_ess = NAM$C_MAXRSS; |
760 | dirnam.nam$l_esa = esa; |
a0d0e21e |
761 | if (!(sys$parse(&dirfab)&1)) { |
748a9306 |
762 | set_errno(EVMSERR); |
763 | set_vaxc_errno(dirfab.fab$l_sts); |
a0d0e21e |
764 | return NULL; |
765 | } |
766 | savnam = dirnam; |
767 | if (sys$search(&dirfab)&1) { /* Does the file really exist? */ |
768 | /* Yes; fake the fnb bits so we'll check type below */ |
769 | dirnam.nam$l_fnb |= NAM$M_EXP_TYPE | NAM$M_EXP_VER; |
770 | } |
771 | else { |
772 | if (dirfab.fab$l_sts != RMS$_FNF) { |
748a9306 |
773 | set_errno(EVMSERR); |
774 | set_vaxc_errno(dirfab.fab$l_sts); |
a0d0e21e |
775 | return NULL; |
776 | } |
777 | dirnam = savnam; /* No; just work with potential name */ |
778 | } |
748a9306 |
779 | if (!(dirnam.nam$l_fnb & (NAM$M_EXP_DEV | NAM$M_EXP_DIR))) { |
780 | cp1 = strchr(esa,']'); |
781 | if (!cp1) cp1 = strchr(esa,'>'); |
782 | if (cp1) { /* Should always be true */ |
783 | dirnam.nam$b_esl -= cp1 - esa - 1; |
784 | memcpy(esa,cp1 + 1,dirnam.nam$b_esl); |
785 | } |
786 | } |
a0d0e21e |
787 | if (dirnam.nam$l_fnb & NAM$M_EXP_TYPE) { /* Was type specified? */ |
788 | /* Yep; check version while we're at it, if it's there. */ |
789 | cmplen = (dirnam.nam$l_fnb & NAM$M_EXP_VER) ? 6 : 4; |
790 | if (strncmp(dirnam.nam$l_type,".DIR;1",cmplen)) { |
791 | /* Something other than .DIR[;1]. Bzzt. */ |
748a9306 |
792 | set_errno(ENOTDIR); |
793 | set_vaxc_errno(RMS$_DIR); |
a0d0e21e |
794 | return NULL; |
795 | } |
748a9306 |
796 | } |
797 | esa[dirnam.nam$b_esl] = '\0'; |
798 | if (dirnam.nam$l_fnb & NAM$M_EXP_NAME) { |
799 | /* They provided at least the name; we added the type, if necessary, */ |
800 | if (buf) retspec = buf; /* in sys$parse() */ |
801 | else if (ts) New(7011,retspec,dirnam.nam$b_esl,char); |
802 | else retspec = __fileify_retbuf; |
803 | strcpy(retspec,esa); |
804 | return retspec; |
805 | } |
806 | if ((cp1 = strrchr(esa,']')) == NULL) cp1 = strrchr(esa,'>'); |
807 | if (cp1 == NULL) return NULL; /* should never happen */ |
808 | term = *cp1; |
809 | *cp1 = '\0'; |
810 | retlen = strlen(esa); |
811 | if ((cp1 = strrchr(esa,'.')) != NULL) { |
812 | /* There's more than one directory in the path. Just roll back. */ |
813 | *cp1 = term; |
814 | if (buf) retspec = buf; |
815 | else if (ts) New(7011,retspec,retlen+6,char); |
816 | else retspec = __fileify_retbuf; |
817 | strcpy(retspec,esa); |
a0d0e21e |
818 | } |
819 | else { |
748a9306 |
820 | if (dirnam.nam$l_fnb & NAM$M_ROOT_DIR) { |
821 | /* Go back and expand rooted logical name */ |
822 | dirnam.nam$b_nop = NAM$M_SYNCHK | NAM$M_NOCONCEAL; |
823 | if (!(sys$parse(&dirfab) & 1)) { |
824 | set_errno(EVMSERR); |
825 | set_vaxc_errno(dirfab.fab$l_sts); |
826 | return NULL; |
827 | } |
828 | retlen = dirnam.nam$b_esl - 9; /* esa - '][' - '].DIR;1' */ |
a0d0e21e |
829 | if (buf) retspec = buf; |
748a9306 |
830 | else if (ts) New(7012,retspec,retlen+7,char); |
a0d0e21e |
831 | else retspec = __fileify_retbuf; |
748a9306 |
832 | cp1 = strstr(esa,"]["); |
833 | dirlen = cp1 - esa; |
834 | memcpy(retspec,esa,dirlen); |
835 | if (!strncmp(cp1+2,"000000]",7)) { |
836 | retspec[dirlen-1] = '\0'; |
837 | for (cp1 = retspec+dirlen-1; *cp1 != '.'; cp1--) ; |
838 | *cp1 = ']'; |
839 | } |
840 | else { |
841 | memcpy(retspec+dirlen,cp1+2,retlen-dirlen); |
842 | retspec[retlen] = '\0'; |
843 | /* Convert last '.' to ']' */ |
844 | for (cp1 = retspec+retlen-1; *cp1 != '.'; cp1--) ; |
845 | *cp1 = ']'; |
846 | } |
a0d0e21e |
847 | } |
748a9306 |
848 | else { /* This is a top-level dir. Add the MFD to the path. */ |
a0d0e21e |
849 | if (buf) retspec = buf; |
850 | else if (ts) New(7012,retspec,retlen+14,char); |
851 | else retspec = __fileify_retbuf; |
852 | cp1 = esa; |
853 | cp2 = retspec; |
854 | while (*cp1 != ':') *(cp2++) = *(cp1++); |
855 | strcpy(cp2,":[000000]"); |
856 | cp1 += 2; |
857 | strcpy(cp2+9,cp1); |
858 | } |
748a9306 |
859 | } |
860 | /* We've set up the string up through the filename. Add the |
a0d0e21e |
861 | type and version, and we're done. */ |
862 | strcat(retspec,".DIR;1"); |
863 | return retspec; |
864 | } |
865 | } /* end of do_fileify_dirspec() */ |
866 | /*}}}*/ |
867 | /* External entry points */ |
868 | char *fileify_dirspec(char *dir, char *buf) |
869 | { return do_fileify_dirspec(dir,buf,0); } |
870 | char *fileify_dirspec_ts(char *dir, char *buf) |
871 | { return do_fileify_dirspec(dir,buf,1); } |
872 | |
873 | /*{{{ char *pathify_dirspec[_ts](char *path, char *buf)*/ |
874 | static char *do_pathify_dirspec(char *dir,char *buf, int ts) |
875 | { |
876 | static char __pathify_retbuf[NAM$C_MAXRSS+1]; |
877 | unsigned long int retlen; |
748a9306 |
878 | char *retpath, *cp1, *cp2, trndir[NAM$C_MAXRSS+1]; |
a0d0e21e |
879 | |
880 | if (dir == NULL) return NULL; |
881 | |
748a9306 |
882 | strcpy(trndir,dir); |
883 | while (!strpbrk(trndir,"/]:>") && my_trnlnm(trndir,trndir) != NULL) ; |
884 | dir = trndir; |
885 | |
a0d0e21e |
886 | if (!strpbrk(dir,"]:>")) { /* Unix-style path or plain dir name */ |
748a9306 |
887 | if (*dir == '.' && (*(dir+1) == '\0' || |
888 | (*(dir+1) == '.' && *(dir+2) == '\0'))) |
889 | retlen = 2 + (*(dir+1) != '\0'); |
890 | else { |
891 | if (!(cp1 = strrchr(dir,'/'))) cp1 = dir; |
892 | if ((cp2 = strchr(cp1,'.')) && *(cp2+1) != '.') { |
893 | if (toupper(*(cp2+1)) == 'D' && /* They specified .dir. */ |
894 | toupper(*(cp2+2)) == 'I' && /* Trim it off. */ |
895 | toupper(*(cp2+3)) == 'R') { |
896 | retlen = cp2 - dir + 1; |
897 | } |
898 | else { /* Some other file type. Bzzt. */ |
899 | set_errno(ENOTDIR); |
900 | set_vaxc_errno(RMS$_DIR); |
901 | return NULL; |
902 | } |
a0d0e21e |
903 | } |
748a9306 |
904 | else { /* No file type present. Treat the filename as a directory. */ |
905 | retlen = strlen(dir) + 1; |
a0d0e21e |
906 | } |
907 | } |
a0d0e21e |
908 | if (buf) retpath = buf; |
909 | else if (ts) New(7013,retpath,retlen,char); |
910 | else retpath = __pathify_retbuf; |
911 | strncpy(retpath,dir,retlen-1); |
912 | if (retpath[retlen-2] != '/') { /* If the path doesn't already end */ |
913 | retpath[retlen-1] = '/'; /* with '/', add it. */ |
914 | retpath[retlen] = '\0'; |
915 | } |
916 | else retpath[retlen-1] = '\0'; |
917 | } |
918 | else { /* VMS-style directory spec */ |
919 | char esa[NAM$C_MAXRSS+1]; |
748a9306 |
920 | unsigned long int cmplen; |
a0d0e21e |
921 | struct FAB dirfab = cc$rms_fab; |
922 | struct NAM savnam, dirnam = cc$rms_nam; |
923 | |
924 | dirfab.fab$b_fns = strlen(dir); |
925 | dirfab.fab$l_fna = dir; |
748a9306 |
926 | if (dir[dirfab.fab$b_fns-1] == ']' || |
927 | dir[dirfab.fab$b_fns-1] == '>' || |
928 | dir[dirfab.fab$b_fns-1] == ':') { /* It's already a VMS 'path' */ |
929 | if (buf) retpath = buf; |
930 | else if (ts) New(7014,retpath,strlen(dir),char); |
931 | else retpath = __pathify_retbuf; |
932 | strcpy(retpath,dir); |
933 | return retpath; |
934 | } |
935 | dirfab.fab$l_dna = ".DIR;1"; |
936 | dirfab.fab$b_dns = 6; |
a0d0e21e |
937 | dirfab.fab$l_nam = &dirnam; |
748a9306 |
938 | dirnam.nam$b_ess = (unsigned char) sizeof esa; |
a0d0e21e |
939 | dirnam.nam$l_esa = esa; |
a0d0e21e |
940 | if (!(sys$parse(&dirfab)&1)) { |
748a9306 |
941 | set_errno(EVMSERR); |
942 | set_vaxc_errno(dirfab.fab$l_sts); |
a0d0e21e |
943 | return NULL; |
944 | } |
945 | savnam = dirnam; |
748a9306 |
946 | if (!(sys$search(&dirfab)&1)) { /* Does the file really exist? */ |
a0d0e21e |
947 | if (dirfab.fab$l_sts != RMS$_FNF) { |
748a9306 |
948 | set_errno(EVMSERR); |
949 | set_vaxc_errno(dirfab.fab$l_sts); |
a0d0e21e |
950 | return NULL; |
951 | } |
952 | dirnam = savnam; /* No; just work with potential name */ |
953 | } |
954 | |
955 | if (dirnam.nam$l_fnb & NAM$M_EXP_TYPE) { /* Was type specified? */ |
956 | /* Yep; check version while we're at it, if it's there. */ |
957 | cmplen = (dirnam.nam$l_fnb & NAM$M_EXP_VER) ? 6 : 4; |
958 | if (strncmp(dirnam.nam$l_type,".DIR;1",cmplen)) { |
959 | /* Something other than .DIR[;1]. Bzzt. */ |
748a9306 |
960 | set_errno(ENOTDIR); |
961 | set_vaxc_errno(RMS$_DIR); |
a0d0e21e |
962 | return NULL; |
963 | } |
a0d0e21e |
964 | } |
748a9306 |
965 | /* OK, the type was fine. Now pull any file name into the |
966 | directory path. */ |
967 | if ((cp1 = strrchr(esa,']'))) *dirnam.nam$l_type = ']'; |
a0d0e21e |
968 | else { |
748a9306 |
969 | cp1 = strrchr(esa,'>'); |
970 | *dirnam.nam$l_type = '>'; |
a0d0e21e |
971 | } |
748a9306 |
972 | *cp1 = '.'; |
973 | *(dirnam.nam$l_type + 1) = '\0'; |
974 | retlen = dirnam.nam$l_type - esa + 2; |
a0d0e21e |
975 | if (buf) retpath = buf; |
976 | else if (ts) New(7014,retpath,retlen,char); |
977 | else retpath = __pathify_retbuf; |
978 | strcpy(retpath,esa); |
979 | } |
980 | |
981 | return retpath; |
982 | } /* end of do_pathify_dirspec() */ |
983 | /*}}}*/ |
984 | /* External entry points */ |
985 | char *pathify_dirspec(char *dir, char *buf) |
986 | { return do_pathify_dirspec(dir,buf,0); } |
987 | char *pathify_dirspec_ts(char *dir, char *buf) |
988 | { return do_pathify_dirspec(dir,buf,1); } |
989 | |
990 | /*{{{ char *tounixspec[_ts](char *path, char *buf)*/ |
991 | static char *do_tounixspec(char *spec, char *buf, int ts) |
992 | { |
993 | static char __tounixspec_retbuf[NAM$C_MAXRSS+1]; |
994 | char *dirend, *rslt, *cp1, *cp2, *cp3, tmp[NAM$C_MAXRSS+1]; |
995 | int devlen, dirlen; |
996 | |
748a9306 |
997 | if (spec == NULL) return NULL; |
a0d0e21e |
998 | if (buf) rslt = buf; |
999 | else if (ts) New(7015,rslt,NAM$C_MAXRSS+1,char); |
1000 | else rslt = __tounixspec_retbuf; |
1001 | if (strchr(spec,'/') != NULL) { |
1002 | strcpy(rslt,spec); |
1003 | return rslt; |
1004 | } |
1005 | |
1006 | cp1 = rslt; |
1007 | cp2 = spec; |
1008 | dirend = strrchr(spec,']'); |
1009 | if (dirend == NULL) dirend = strrchr(spec,'>'); |
1010 | if (dirend == NULL) dirend = strchr(spec,':'); |
1011 | if (dirend == NULL) { |
1012 | strcpy(rslt,spec); |
1013 | return rslt; |
1014 | } |
1015 | if (*cp2 != '[') { |
1016 | *(cp1++) = '/'; |
1017 | } |
1018 | else { /* the VMS spec begins with directories */ |
1019 | cp2++; |
1020 | if (*cp2 == '-') { |
1021 | while (*cp2 == '-') { |
1022 | *(cp1++) = '.'; *(cp1++) = '.'; *(cp1++) = '/'; |
1023 | cp2++; |
1024 | } |
1025 | if (*cp2 != '.' && *cp2 != ']' && *cp2 != '>') { /* we don't allow */ |
1026 | if (ts) Safefree(rslt); /* filespecs like */ |
748a9306 |
1027 | set_errno(EINVAL); set_vaxc_errno(RMS$_SYN); /* [--foo.bar] */ |
a0d0e21e |
1028 | return NULL; |
1029 | } |
1030 | cp2++; |
1031 | } |
1032 | else if ( *(cp2) != '.') { /* add the implied device into the Unix spec */ |
1033 | *(cp1++) = '/'; |
1034 | if (getcwd(tmp,sizeof tmp,1) == NULL) { |
1035 | if (ts) Safefree(rslt); |
1036 | return NULL; |
1037 | } |
1038 | do { |
1039 | cp3 = tmp; |
1040 | while (*cp3 != ':' && *cp3) cp3++; |
1041 | *(cp3++) = '\0'; |
1042 | if (strchr(cp3,']') != NULL) break; |
1043 | } while (((cp3 = getenv(tmp)) != NULL) && strcpy(tmp,cp3)); |
1044 | cp3 = tmp; |
1045 | while (*cp3) *(cp1++) = *(cp3++); |
1046 | *(cp1++) = '/'; |
1047 | if ((devlen = strlen(tmp)) + (dirlen = strlen(cp2)) + 1 > NAM$C_MAXRSS) { |
1048 | if (ts) Safefree(rslt); |
748a9306 |
1049 | set_errno(ERANGE); |
1050 | set_errno(RMS$_SYN); |
a0d0e21e |
1051 | return NULL; |
1052 | } |
1053 | } |
1054 | else cp2++; |
1055 | } |
1056 | for (; cp2 <= dirend; cp2++) { |
1057 | if (*cp2 == ':') { |
1058 | *(cp1++) = '/'; |
1059 | if (*(cp2+1) == '[') cp2++; |
1060 | } |
1061 | else if (*cp2 == ']' || *cp2 == '>') *(cp1++) = '/'; |
1062 | else if (*cp2 == '.') { |
1063 | *(cp1++) = '/'; |
1064 | while (*(cp2+1) == ']' || *(cp2+1) == '>' || |
1065 | *(cp2+1) == '[' || *(cp2+1) == '<') cp2++; |
1066 | } |
1067 | else if (*cp2 == '-') { |
1068 | if (*(cp2-1) == '[' || *(cp2-1) == '<' || *(cp2-1) == '.') { |
1069 | while (*cp2 == '-') { |
1070 | cp2++; |
1071 | *(cp1++) = '.'; *(cp1++) = '.'; *(cp1++) = '/'; |
1072 | } |
1073 | if (*cp2 != '.' && *cp2 != ']' && *cp2 != '>') { /* we don't allow */ |
1074 | if (ts) Safefree(rslt); /* filespecs like */ |
748a9306 |
1075 | set_errno(EINVAL); set_vaxc_errno(RMS$_SYN); /* [--foo.bar] */ |
a0d0e21e |
1076 | return NULL; |
1077 | } |
1078 | cp2++; |
1079 | } |
1080 | else *(cp1++) = *cp2; |
1081 | } |
1082 | else *(cp1++) = *cp2; |
1083 | } |
1084 | while (*cp2) *(cp1++) = *(cp2++); |
1085 | *cp1 = '\0'; |
1086 | |
1087 | return rslt; |
1088 | |
1089 | } /* end of do_tounixspec() */ |
1090 | /*}}}*/ |
1091 | /* External entry points */ |
1092 | char *tounixspec(char *spec, char *buf) { return do_tounixspec(spec,buf,0); } |
1093 | char *tounixspec_ts(char *spec, char *buf) { return do_tounixspec(spec,buf,1); } |
1094 | |
1095 | /*{{{ char *tovmsspec[_ts](char *path, char *buf)*/ |
1096 | static char *do_tovmsspec(char *path, char *buf, int ts) { |
1097 | static char __tovmsspec_retbuf[NAM$C_MAXRSS+1]; |
748a9306 |
1098 | register char *rslt, *dirend, *cp1, *cp2; |
1099 | register unsigned long int infront = 0; |
a0d0e21e |
1100 | |
748a9306 |
1101 | if (path == NULL) return NULL; |
a0d0e21e |
1102 | if (buf) rslt = buf; |
1103 | else if (ts) New(7016,rslt,strlen(path)+1,char); |
1104 | else rslt = __tovmsspec_retbuf; |
748a9306 |
1105 | if (strpbrk(path,"]:>") || |
a0d0e21e |
1106 | (dirend = strrchr(path,'/')) == NULL) { |
748a9306 |
1107 | if (path[0] == '.') { |
1108 | if (path[1] == '\0') strcpy(rslt,"[]"); |
1109 | else if (path[1] == '.' && path[2] == '\0') strcpy(rslt,"[-]"); |
1110 | else strcpy(rslt,path); /* probably garbage */ |
1111 | } |
1112 | else strcpy(rslt,path); |
a0d0e21e |
1113 | return rslt; |
1114 | } |
748a9306 |
1115 | if (*(dirend+1) == '.') { /* do we have trailing "/." or "/.."? */ |
1116 | if (!*(dirend+2)) dirend +=2; |
1117 | if (*(dirend+2) == '.' && !*(dirend+3)) dirend += 3; |
1118 | } |
a0d0e21e |
1119 | cp1 = rslt; |
1120 | cp2 = path; |
1121 | if (*cp2 == '/') { |
1122 | while (*(++cp2) != '/' && *cp2) *(cp1++) = *cp2; |
1123 | *(cp1++) = ':'; |
1124 | *(cp1++) = '['; |
748a9306 |
1125 | if (cp2 == dirend) while (infront++ < 6) *(cp1++) = '0'; |
1126 | else cp2++; |
1127 | } |
a0d0e21e |
1128 | else { |
1129 | *(cp1++) = '['; |
748a9306 |
1130 | if (*cp2 == '.') { |
1131 | if (*(cp2+1) == '/' || *(cp2+1) == '\0') { |
1132 | cp2 += 2; /* skip over "./" - it's redundant */ |
1133 | *(cp1++) = '.'; /* but it does indicate a relative dirspec */ |
1134 | } |
1135 | else if (*(cp2+1) == '.' && (*(cp2+2) == '/' || *(cp2+2) == '\0')) { |
1136 | *(cp1++) = '-'; /* "../" --> "-" */ |
1137 | cp2 += 3; |
1138 | } |
1139 | if (cp2 > dirend) cp2 = dirend; |
1140 | } |
1141 | else *(cp1++) = '.'; |
1142 | } |
1143 | for (; cp2 < dirend; cp2++) { |
1144 | if (*cp2 == '/') { |
1145 | if (*(cp1-1) != '.') *(cp1++) = '.'; |
1146 | infront = 0; |
1147 | } |
1148 | else if (!infront && *cp2 == '.') { |
1149 | if (*(cp2+1) == '/') cp2++; /* skip over "./" - it's redundant */ |
1150 | else if (*(cp2+1) == '.' && (*(cp2+2) == '/' || *(cp2+2) == '\0')) { |
1151 | if (*(cp1-1) == '-' || *(cp1-1) == '[') *(cp1++) = '-'; /* handle "../" */ |
1152 | else if (*(cp1-2) == '[') *(cp1-1) = '-'; |
1153 | else { /* back up over previous directory name */ |
1154 | cp1--; |
1155 | while (*(cp1-1) != '.' && *(cp1-1) != '[') cp1--; |
1156 | } |
1157 | cp2 += 2; |
1158 | if (cp2 == dirend) { |
1159 | if (*(cp1-1) == '.') cp1--; |
1160 | break; |
1161 | } |
1162 | } |
1163 | else *(cp1++) = '_'; /* fix up syntax - '.' in name not allowed */ |
1164 | } |
1165 | else { |
1166 | if (*(cp1-1) == '-') *(cp1++) = '.'; |
1167 | if (*cp2 == '/') *(cp1++) = '.'; |
1168 | else if (*cp2 == '.') *(cp1++) = '_'; |
1169 | else *(cp1++) = *cp2; |
1170 | infront = 1; |
1171 | } |
a0d0e21e |
1172 | } |
748a9306 |
1173 | if (*(cp1-1) == '.') cp1--; /* Unix spec ending in '/' ==> trailing '.' */ |
a0d0e21e |
1174 | *(cp1++) = ']'; |
748a9306 |
1175 | if (*cp2) cp2++; /* check in case we ended with trailing '..' */ |
a0d0e21e |
1176 | while (*cp2) *(cp1++) = *(cp2++); |
1177 | *cp1 = '\0'; |
1178 | |
1179 | return rslt; |
1180 | |
1181 | } /* end of do_tovmsspec() */ |
1182 | /*}}}*/ |
1183 | /* External entry points */ |
1184 | char *tovmsspec(char *path, char *buf) { return do_tovmsspec(path,buf,0); } |
1185 | char *tovmsspec_ts(char *path, char *buf) { return do_tovmsspec(path,buf,1); } |
1186 | |
1187 | /*{{{ char *tovmspath[_ts](char *path, char *buf)*/ |
1188 | static char *do_tovmspath(char *path, char *buf, int ts) { |
1189 | static char __tovmspath_retbuf[NAM$C_MAXRSS+1]; |
1190 | int vmslen; |
1191 | char pathified[NAM$C_MAXRSS+1], vmsified[NAM$C_MAXRSS+1], *cp; |
1192 | |
748a9306 |
1193 | if (path == NULL) return NULL; |
a0d0e21e |
1194 | if (do_pathify_dirspec(path,pathified,0) == NULL) return NULL; |
1195 | if (do_tovmsspec(pathified,buf ? buf : vmsified,0) == NULL) return NULL; |
1196 | if (buf) return buf; |
1197 | else if (ts) { |
1198 | vmslen = strlen(vmsified); |
1199 | New(7017,cp,vmslen,char); |
1200 | memcpy(cp,vmsified,vmslen); |
1201 | cp[vmslen] = '\0'; |
1202 | return cp; |
1203 | } |
1204 | else { |
1205 | strcpy(__tovmspath_retbuf,vmsified); |
1206 | return __tovmspath_retbuf; |
1207 | } |
1208 | |
1209 | } /* end of do_tovmspath() */ |
1210 | /*}}}*/ |
1211 | /* External entry points */ |
1212 | char *tovmspath(char *path, char *buf) { return do_tovmspath(path,buf,0); } |
1213 | char *tovmspath_ts(char *path, char *buf) { return do_tovmspath(path,buf,1); } |
1214 | |
1215 | |
1216 | /*{{{ char *tounixpath[_ts](char *path, char *buf)*/ |
1217 | static char *do_tounixpath(char *path, char *buf, int ts) { |
1218 | static char __tounixpath_retbuf[NAM$C_MAXRSS+1]; |
1219 | int unixlen; |
1220 | char pathified[NAM$C_MAXRSS+1], unixified[NAM$C_MAXRSS+1], *cp; |
1221 | |
748a9306 |
1222 | if (path == NULL) return NULL; |
a0d0e21e |
1223 | if (do_pathify_dirspec(path,pathified,0) == NULL) return NULL; |
1224 | if (do_tounixspec(pathified,buf ? buf : unixified,0) == NULL) return NULL; |
1225 | if (buf) return buf; |
1226 | else if (ts) { |
1227 | unixlen = strlen(unixified); |
1228 | New(7017,cp,unixlen,char); |
1229 | memcpy(cp,unixified,unixlen); |
1230 | cp[unixlen] = '\0'; |
1231 | return cp; |
1232 | } |
1233 | else { |
1234 | strcpy(__tounixpath_retbuf,unixified); |
1235 | return __tounixpath_retbuf; |
1236 | } |
1237 | |
1238 | } /* end of do_tounixpath() */ |
1239 | /*}}}*/ |
1240 | /* External entry points */ |
1241 | char *tounixpath(char *path, char *buf) { return do_tounixpath(path,buf,0); } |
1242 | char *tounixpath_ts(char *path, char *buf) { return do_tounixpath(path,buf,1); } |
1243 | |
1244 | /* |
1245 | * @(#)argproc.c 2.2 94/08/16 Mark Pizzolato (mark@infocomm.com) |
1246 | * |
1247 | ***************************************************************************** |
1248 | * * |
1249 | * Copyright (C) 1989-1994 by * |
1250 | * Mark Pizzolato - INFO COMM, Danville, California (510) 837-5600 * |
1251 | * * |
1252 | * Permission is hereby granted for the reproduction of this software, * |
1253 | * on condition that this copyright notice is included in the reproduction, * |
1254 | * and that such reproduction is not for purposes of profit or material * |
1255 | * gain. * |
1256 | * * |
1257 | * 27-Aug-1994 Modified for inclusion in perl5 * |
1258 | * by Charles Bailey bailey@genetics.upenn.edu * |
1259 | ***************************************************************************** |
1260 | */ |
1261 | |
1262 | /* |
1263 | * getredirection() is intended to aid in porting C programs |
1264 | * to VMS (Vax-11 C). The native VMS environment does not support |
1265 | * '>' and '<' I/O redirection, or command line wild card expansion, |
1266 | * or a command line pipe mechanism using the '|' AND background |
1267 | * command execution '&'. All of these capabilities are provided to any |
1268 | * C program which calls this procedure as the first thing in the |
1269 | * main program. |
1270 | * The piping mechanism will probably work with almost any 'filter' type |
1271 | * of program. With suitable modification, it may useful for other |
1272 | * portability problems as well. |
1273 | * |
1274 | * Author: Mark Pizzolato mark@infocomm.com |
1275 | */ |
1276 | struct list_item |
1277 | { |
1278 | struct list_item *next; |
1279 | char *value; |
1280 | }; |
1281 | |
1282 | static void add_item(struct list_item **head, |
1283 | struct list_item **tail, |
1284 | char *value, |
1285 | int *count); |
1286 | |
1287 | static void expand_wild_cards(char *item, |
1288 | struct list_item **head, |
1289 | struct list_item **tail, |
1290 | int *count); |
1291 | |
1292 | static int background_process(int argc, char **argv); |
1293 | |
1294 | static void pipe_and_fork(char **cmargv); |
1295 | |
1296 | /*{{{ void getredirection(int *ac, char ***av)*/ |
1297 | void |
1298 | getredirection(int *ac, char ***av) |
1299 | /* |
1300 | * Process vms redirection arg's. Exit if any error is seen. |
1301 | * If getredirection() processes an argument, it is erased |
1302 | * from the vector. getredirection() returns a new argc and argv value. |
1303 | * In the event that a background command is requested (by a trailing "&"), |
1304 | * this routine creates a background subprocess, and simply exits the program. |
1305 | * |
1306 | * Warning: do not try to simplify the code for vms. The code |
1307 | * presupposes that getredirection() is called before any data is |
1308 | * read from stdin or written to stdout. |
1309 | * |
1310 | * Normal usage is as follows: |
1311 | * |
1312 | * main(argc, argv) |
1313 | * int argc; |
1314 | * char *argv[]; |
1315 | * { |
1316 | * getredirection(&argc, &argv); |
1317 | * } |
1318 | */ |
1319 | { |
1320 | int argc = *ac; /* Argument Count */ |
1321 | char **argv = *av; /* Argument Vector */ |
1322 | char *ap; /* Argument pointer */ |
1323 | int j; /* argv[] index */ |
1324 | int item_count = 0; /* Count of Items in List */ |
1325 | struct list_item *list_head = 0; /* First Item in List */ |
1326 | struct list_item *list_tail; /* Last Item in List */ |
1327 | char *in = NULL; /* Input File Name */ |
1328 | char *out = NULL; /* Output File Name */ |
1329 | char *outmode = "w"; /* Mode to Open Output File */ |
1330 | char *err = NULL; /* Error File Name */ |
1331 | char *errmode = "w"; /* Mode to Open Error File */ |
1332 | int cmargc = 0; /* Piped Command Arg Count */ |
1333 | char **cmargv = NULL;/* Piped Command Arg Vector */ |
a0d0e21e |
1334 | |
1335 | /* |
1336 | * First handle the case where the last thing on the line ends with |
1337 | * a '&'. This indicates the desire for the command to be run in a |
1338 | * subprocess, so we satisfy that desire. |
1339 | */ |
1340 | ap = argv[argc-1]; |
1341 | if (0 == strcmp("&", ap)) |
1342 | exit(background_process(--argc, argv)); |
1343 | if ('&' == ap[strlen(ap)-1]) |
1344 | { |
1345 | ap[strlen(ap)-1] = '\0'; |
1346 | exit(background_process(argc, argv)); |
1347 | } |
1348 | /* |
1349 | * Now we handle the general redirection cases that involve '>', '>>', |
1350 | * '<', and pipes '|'. |
1351 | */ |
1352 | for (j = 0; j < argc; ++j) |
1353 | { |
1354 | if (0 == strcmp("<", argv[j])) |
1355 | { |
1356 | if (j+1 >= argc) |
1357 | { |
748a9306 |
1358 | fprintf(stderr,"No input file after < on command line"); |
1359 | exit(LIB$_WRONUMARG); |
a0d0e21e |
1360 | } |
1361 | in = argv[++j]; |
1362 | continue; |
1363 | } |
1364 | if ('<' == *(ap = argv[j])) |
1365 | { |
1366 | in = 1 + ap; |
1367 | continue; |
1368 | } |
1369 | if (0 == strcmp(">", ap)) |
1370 | { |
1371 | if (j+1 >= argc) |
1372 | { |
748a9306 |
1373 | fprintf(stderr,"No output file after > on command line"); |
1374 | exit(LIB$_WRONUMARG); |
a0d0e21e |
1375 | } |
1376 | out = argv[++j]; |
1377 | continue; |
1378 | } |
1379 | if ('>' == *ap) |
1380 | { |
1381 | if ('>' == ap[1]) |
1382 | { |
1383 | outmode = "a"; |
1384 | if ('\0' == ap[2]) |
1385 | out = argv[++j]; |
1386 | else |
1387 | out = 2 + ap; |
1388 | } |
1389 | else |
1390 | out = 1 + ap; |
1391 | if (j >= argc) |
1392 | { |
748a9306 |
1393 | fprintf(stderr,"No output file after > or >> on command line"); |
1394 | exit(LIB$_WRONUMARG); |
a0d0e21e |
1395 | } |
1396 | continue; |
1397 | } |
1398 | if (('2' == *ap) && ('>' == ap[1])) |
1399 | { |
1400 | if ('>' == ap[2]) |
1401 | { |
1402 | errmode = "a"; |
1403 | if ('\0' == ap[3]) |
1404 | err = argv[++j]; |
1405 | else |
1406 | err = 3 + ap; |
1407 | } |
1408 | else |
1409 | if ('\0' == ap[2]) |
1410 | err = argv[++j]; |
1411 | else |
748a9306 |
1412 | err = 2 + ap; |
a0d0e21e |
1413 | if (j >= argc) |
1414 | { |
748a9306 |
1415 | fprintf(stderr,"No output file after 2> or 2>> on command line"); |
1416 | exit(LIB$_WRONUMARG); |
a0d0e21e |
1417 | } |
1418 | continue; |
1419 | } |
1420 | if (0 == strcmp("|", argv[j])) |
1421 | { |
1422 | if (j+1 >= argc) |
1423 | { |
748a9306 |
1424 | fprintf(stderr,"No command into which to pipe on command line"); |
1425 | exit(LIB$_WRONUMARG); |
a0d0e21e |
1426 | } |
1427 | cmargc = argc-(j+1); |
1428 | cmargv = &argv[j+1]; |
1429 | argc = j; |
1430 | continue; |
1431 | } |
1432 | if ('|' == *(ap = argv[j])) |
1433 | { |
1434 | ++argv[j]; |
1435 | cmargc = argc-j; |
1436 | cmargv = &argv[j]; |
1437 | argc = j; |
1438 | continue; |
1439 | } |
1440 | expand_wild_cards(ap, &list_head, &list_tail, &item_count); |
1441 | } |
1442 | /* |
1443 | * Allocate and fill in the new argument vector, Some Unix's terminate |
1444 | * the list with an extra null pointer. |
1445 | */ |
1446 | New(7002, argv, item_count+1, char *); |
1447 | *av = argv; |
1448 | for (j = 0; j < item_count; ++j, list_head = list_head->next) |
1449 | argv[j] = list_head->value; |
1450 | *ac = item_count; |
1451 | if (cmargv != NULL) |
1452 | { |
1453 | if (out != NULL) |
1454 | { |
748a9306 |
1455 | fprintf(stderr,"'|' and '>' may not both be specified on command line"); |
1456 | exit(LIB$_INVARGORD); |
a0d0e21e |
1457 | } |
1458 | pipe_and_fork(cmargv); |
1459 | } |
1460 | |
1461 | /* Check for input from a pipe (mailbox) */ |
1462 | |
1463 | if (1 == isapipe(0)) |
1464 | { |
1465 | char mbxname[L_tmpnam]; |
1466 | long int bufsize; |
1467 | long int dvi_item = DVI$_DEVBUFSIZ; |
1468 | $DESCRIPTOR(mbxnam, ""); |
1469 | $DESCRIPTOR(mbxdevnam, ""); |
1470 | |
1471 | /* Input from a pipe, reopen it in binary mode to disable */ |
1472 | /* carriage control processing. */ |
1473 | |
1474 | if (in != NULL) |
1475 | { |
748a9306 |
1476 | fprintf(stderr,"'|' and '<' may not both be specified on command line"); |
1477 | exit(LIB$_INVARGORD); |
a0d0e21e |
1478 | } |
748a9306 |
1479 | fgetname(stdin, mbxname,1); |
a0d0e21e |
1480 | mbxnam.dsc$a_pointer = mbxname; |
1481 | mbxnam.dsc$w_length = strlen(mbxnam.dsc$a_pointer); |
1482 | lib$getdvi(&dvi_item, 0, &mbxnam, &bufsize, 0, 0); |
1483 | mbxdevnam.dsc$a_pointer = mbxname; |
1484 | mbxdevnam.dsc$w_length = sizeof(mbxname); |
1485 | dvi_item = DVI$_DEVNAM; |
1486 | lib$getdvi(&dvi_item, 0, &mbxnam, 0, &mbxdevnam, &mbxdevnam.dsc$w_length); |
1487 | mbxdevnam.dsc$a_pointer[mbxdevnam.dsc$w_length] = '\0'; |
748a9306 |
1488 | set_errno(0); |
1489 | set_vaxc_errno(1); |
a0d0e21e |
1490 | freopen(mbxname, "rb", stdin); |
1491 | if (errno != 0) |
1492 | { |
748a9306 |
1493 | fprintf(stderr,"Can't reopen input pipe (name: %s) in binary mode",mbxname); |
1494 | exit(vaxc$errno); |
a0d0e21e |
1495 | } |
1496 | } |
1497 | if ((in != NULL) && (NULL == freopen(in, "r", stdin, "mbc=32", "mbf=2"))) |
1498 | { |
748a9306 |
1499 | fprintf(stderr,"Can't open input file %s as stdin",in); |
1500 | exit(vaxc$errno); |
a0d0e21e |
1501 | } |
1502 | if ((out != NULL) && (NULL == freopen(out, outmode, stdout, "mbc=32", "mbf=2"))) |
1503 | { |
748a9306 |
1504 | fprintf(stderr,"Can't open output file %s as stdout",out); |
1505 | exit(vaxc$errno); |
a0d0e21e |
1506 | } |
748a9306 |
1507 | if (err != NULL) { |
1508 | FILE *tmperr; |
1509 | if (NULL == (tmperr = fopen(err, errmode, "mbc=32", "mbf=2"))) |
1510 | { |
1511 | fprintf(stderr,"Can't open error file %s as stderr",err); |
1512 | exit(vaxc$errno); |
1513 | } |
1514 | fclose(tmperr); |
1515 | if (NULL == freopen(err, "a", stderr, "mbc=32", "mbf=2")) |
1516 | { |
1517 | exit(vaxc$errno); |
1518 | } |
a0d0e21e |
1519 | } |
1520 | #ifdef ARGPROC_DEBUG |
1521 | fprintf(stderr, "Arglist:\n"); |
1522 | for (j = 0; j < *ac; ++j) |
1523 | fprintf(stderr, "argv[%d] = '%s'\n", j, argv[j]); |
1524 | #endif |
1525 | } /* end of getredirection() */ |
1526 | /*}}}*/ |
1527 | |
1528 | static void add_item(struct list_item **head, |
1529 | struct list_item **tail, |
1530 | char *value, |
1531 | int *count) |
1532 | { |
1533 | if (*head == 0) |
1534 | { |
1535 | New(7003,*head,1,struct list_item); |
1536 | *tail = *head; |
1537 | } |
1538 | else { |
1539 | New(7004,(*tail)->next,1,struct list_item); |
1540 | *tail = (*tail)->next; |
1541 | } |
1542 | (*tail)->value = value; |
1543 | ++(*count); |
1544 | } |
1545 | |
1546 | static void expand_wild_cards(char *item, |
1547 | struct list_item **head, |
1548 | struct list_item **tail, |
1549 | int *count) |
1550 | { |
1551 | int expcount = 0; |
748a9306 |
1552 | unsigned long int context = 0; |
a0d0e21e |
1553 | int isunix = 0; |
a0d0e21e |
1554 | int status_value; |
1555 | char *had_version; |
1556 | char *had_device; |
1557 | int had_directory; |
1558 | char *devdir; |
1559 | char vmsspec[NAM$C_MAXRSS+1]; |
1560 | $DESCRIPTOR(filespec, ""); |
748a9306 |
1561 | $DESCRIPTOR(defaultspec, "SYS$DISK:[]"); |
a0d0e21e |
1562 | $DESCRIPTOR(resultspec, ""); |
1563 | unsigned long int zero = 0; |
1564 | |
1565 | if (strcspn(item, "*%") == strlen(item)) |
1566 | { |
1567 | add_item(head, tail, item, count); |
1568 | return; |
1569 | } |
1570 | resultspec.dsc$b_dtype = DSC$K_DTYPE_T; |
1571 | resultspec.dsc$b_class = DSC$K_CLASS_D; |
1572 | resultspec.dsc$a_pointer = NULL; |
748a9306 |
1573 | if ((isunix = (int) strchr(item,'/')) != (int) NULL) |
a0d0e21e |
1574 | filespec.dsc$a_pointer = do_tovmsspec(item,vmsspec,0); |
1575 | if (!isunix || !filespec.dsc$a_pointer) |
1576 | filespec.dsc$a_pointer = item; |
1577 | filespec.dsc$w_length = strlen(filespec.dsc$a_pointer); |
1578 | /* |
1579 | * Only return version specs, if the caller specified a version |
1580 | */ |
1581 | had_version = strchr(item, ';'); |
1582 | /* |
1583 | * Only return device and directory specs, if the caller specifed either. |
1584 | */ |
1585 | had_device = strchr(item, ':'); |
1586 | had_directory = (isunix || NULL != strchr(item, '[')) || (NULL != strchr(item, '<')); |
1587 | |
1588 | while (1 == (1&lib$find_file(&filespec, &resultspec, &context, |
1589 | &defaultspec, 0, &status_value, &zero))) |
1590 | { |
1591 | char *string; |
1592 | char *c; |
1593 | |
1594 | New(7005,string,resultspec.dsc$w_length+1,char); |
1595 | strncpy(string, resultspec.dsc$a_pointer, resultspec.dsc$w_length); |
1596 | string[resultspec.dsc$w_length] = '\0'; |
1597 | if (NULL == had_version) |
1598 | *((char *)strrchr(string, ';')) = '\0'; |
1599 | if ((!had_directory) && (had_device == NULL)) |
1600 | { |
1601 | if (NULL == (devdir = strrchr(string, ']'))) |
1602 | devdir = strrchr(string, '>'); |
1603 | strcpy(string, devdir + 1); |
1604 | } |
1605 | /* |
1606 | * Be consistent with what the C RTL has already done to the rest of |
1607 | * the argv items and lowercase all of these names. |
1608 | */ |
1609 | for (c = string; *c; ++c) |
1610 | if (isupper(*c)) |
1611 | *c = tolower(*c); |
1612 | if (isunix) trim_unixpath(item,string); |
1613 | add_item(head, tail, string, count); |
1614 | ++expcount; |
1615 | } |
1616 | if (expcount == 0) |
1617 | add_item(head, tail, item, count); |
1618 | lib$sfree1_dd(&resultspec); |
1619 | lib$find_file_end(&context); |
1620 | } |
1621 | |
1622 | static int child_st[2];/* Event Flag set when child process completes */ |
1623 | |
748a9306 |
1624 | static unsigned short child_chan;/* I/O Channel for Pipe Mailbox */ |
a0d0e21e |
1625 | |
748a9306 |
1626 | static unsigned long int exit_handler(int *status) |
a0d0e21e |
1627 | { |
1628 | short iosb[4]; |
1629 | |
1630 | if (0 == child_st[0]) |
1631 | { |
1632 | #ifdef ARGPROC_DEBUG |
1633 | fprintf(stderr, "Waiting for Child Process to Finish . . .\n"); |
1634 | #endif |
1635 | fflush(stdout); /* Have to flush pipe for binary data to */ |
1636 | /* terminate properly -- <tp@mccall.com> */ |
1637 | sys$qiow(0, child_chan, IO$_WRITEOF, iosb, 0, 0, 0, 0, 0, 0, 0, 0); |
1638 | sys$dassgn(child_chan); |
1639 | fclose(stdout); |
1640 | sys$synch(0, child_st); |
1641 | } |
1642 | return(1); |
1643 | } |
1644 | |
1645 | static void sig_child(int chan) |
1646 | { |
1647 | #ifdef ARGPROC_DEBUG |
1648 | fprintf(stderr, "Child Completion AST\n"); |
1649 | #endif |
1650 | if (child_st[0] == 0) |
1651 | child_st[0] = 1; |
1652 | } |
1653 | |
748a9306 |
1654 | static struct exit_control_block exit_block = |
a0d0e21e |
1655 | { |
1656 | 0, |
1657 | exit_handler, |
1658 | 1, |
1659 | &exit_block.exit_status, |
1660 | 0 |
1661 | }; |
1662 | |
1663 | static void pipe_and_fork(char **cmargv) |
1664 | { |
1665 | char subcmd[2048]; |
1666 | $DESCRIPTOR(cmddsc, ""); |
1667 | static char mbxname[64]; |
1668 | $DESCRIPTOR(mbxdsc, mbxname); |
a0d0e21e |
1669 | int pid, j; |
a0d0e21e |
1670 | unsigned long int zero = 0, one = 1; |
1671 | |
1672 | strcpy(subcmd, cmargv[0]); |
1673 | for (j = 1; NULL != cmargv[j]; ++j) |
1674 | { |
1675 | strcat(subcmd, " \""); |
1676 | strcat(subcmd, cmargv[j]); |
1677 | strcat(subcmd, "\""); |
1678 | } |
1679 | cmddsc.dsc$a_pointer = subcmd; |
1680 | cmddsc.dsc$w_length = strlen(cmddsc.dsc$a_pointer); |
1681 | |
1682 | create_mbx(&child_chan,&mbxdsc); |
1683 | #ifdef ARGPROC_DEBUG |
1684 | fprintf(stderr, "Pipe Mailbox Name = '%s'\n", mbxdsc.dsc$a_pointer); |
1685 | fprintf(stderr, "Sub Process Command = '%s'\n", cmddsc.dsc$a_pointer); |
1686 | #endif |
748a9306 |
1687 | _ckvmssts(lib$spawn(&cmddsc, &mbxdsc, 0, &one, |
a0d0e21e |
1688 | 0, &pid, child_st, &zero, sig_child, |
748a9306 |
1689 | &child_chan)); |
a0d0e21e |
1690 | #ifdef ARGPROC_DEBUG |
1691 | fprintf(stderr, "Subprocess's Pid = %08X\n", pid); |
1692 | #endif |
1693 | sys$dclexh(&exit_block); |
1694 | if (NULL == freopen(mbxname, "wb", stdout)) |
1695 | { |
748a9306 |
1696 | fprintf(stderr,"Can't open output pipe (name %s)",mbxname); |
a0d0e21e |
1697 | } |
1698 | } |
1699 | |
1700 | static int background_process(int argc, char **argv) |
1701 | { |
1702 | char command[2048] = "$"; |
1703 | $DESCRIPTOR(value, ""); |
1704 | static $DESCRIPTOR(cmd, "BACKGROUND$COMMAND"); |
1705 | static $DESCRIPTOR(null, "NLA0:"); |
1706 | static $DESCRIPTOR(pidsymbol, "SHELL_BACKGROUND_PID"); |
1707 | char pidstring[80]; |
1708 | $DESCRIPTOR(pidstr, ""); |
1709 | int pid; |
748a9306 |
1710 | unsigned long int flags = 17, one = 1, retsts; |
a0d0e21e |
1711 | |
1712 | strcat(command, argv[0]); |
1713 | while (--argc) |
1714 | { |
1715 | strcat(command, " \""); |
1716 | strcat(command, *(++argv)); |
1717 | strcat(command, "\""); |
1718 | } |
1719 | value.dsc$a_pointer = command; |
1720 | value.dsc$w_length = strlen(value.dsc$a_pointer); |
748a9306 |
1721 | _ckvmssts(lib$set_symbol(&cmd, &value)); |
1722 | retsts = lib$spawn(&cmd, &null, 0, &flags, 0, &pid); |
1723 | if (retsts == 0x38250) { /* DCL-W-NOTIFY - We must be BATCH, so retry */ |
1724 | _ckvmssts(lib$spawn(&cmd, &null, 0, &one, 0, &pid)); |
1725 | } |
1726 | else { |
1727 | _ckvmssts(retsts); |
1728 | } |
a0d0e21e |
1729 | #ifdef ARGPROC_DEBUG |
1730 | fprintf(stderr, "%s\n", command); |
1731 | #endif |
1732 | sprintf(pidstring, "%08X", pid); |
1733 | fprintf(stderr, "%s\n", pidstring); |
1734 | pidstr.dsc$a_pointer = pidstring; |
1735 | pidstr.dsc$w_length = strlen(pidstr.dsc$a_pointer); |
1736 | lib$set_symbol(&pidsymbol, &pidstr); |
1737 | return(SS$_NORMAL); |
1738 | } |
1739 | /*}}}*/ |
1740 | /***** End of code taken from Mark Pizzolato's argproc.c package *****/ |
1741 | |
a0d0e21e |
1742 | /* trim_unixpath() |
1743 | * Trim Unix-style prefix off filespec, so it looks like what a shell |
1744 | * glob expansion would return (i.e. from specified prefix on, not |
1745 | * full path). Note that returned filespec is Unix-style, regardless |
1746 | * of whether input filespec was VMS-style or Unix-style. |
1747 | * |
1748 | * Returns !=0 on success, 0 on failure. |
1749 | */ |
1750 | /*{{{int trim_unixpath(char *template, char *fspec)*/ |
1751 | int |
1752 | trim_unixpath(char *template, char *fspec) |
1753 | { |
1754 | char unixified[NAM$C_MAXRSS+1], *base, *cp1, *cp2; |
1755 | register int tmplen; |
1756 | |
1757 | if (strpbrk(fspec,"]>:") != NULL) { |
1758 | if (do_tounixspec(fspec,unixified,0) == NULL) return 0; |
1759 | else base = unixified; |
1760 | } |
1761 | else base = fspec; |
1762 | for (cp2 = base; *cp2; cp2++) ; /* Find end of filespec */ |
1763 | |
1764 | /* Find prefix to template consisting of path elements without wildcards */ |
1765 | if ((cp1 = strpbrk(template,"*%?")) == NULL) |
1766 | for (cp1 = template; *cp1; cp1++) ; |
1767 | else while (cp1 >= template && *cp1 != '/') cp1--; |
1768 | if (cp1 == template) return 1; /* Wildcard was up front - no prefix to clip */ |
1769 | tmplen = cp1 - template; |
1770 | |
1771 | /* Try to find template prefix on filespec */ |
1772 | if (!memcmp(base,template,tmplen)) return 1; /* Nothing before prefix - we're done */ |
1773 | for (; cp2 - base > tmplen; base++) { |
1774 | if (*base != '/') continue; |
1775 | if (!memcmp(base + 1,template,tmplen)) break; |
1776 | } |
1777 | if (cp2 - base == tmplen) return 0; /* Not there - not good */ |
1778 | base++; /* Move past leading '/' */ |
1779 | /* Copy down remaining portion of filespec, including trailing NUL */ |
1780 | memmove(fspec,base,cp2 - base + 1); |
1781 | return 1; |
1782 | |
1783 | } /* end of trim_unixpath() */ |
1784 | /*}}}*/ |
1785 | |
a0d0e21e |
1786 | |
1787 | /* |
1788 | * VMS readdir() routines. |
1789 | * Written by Rich $alz, <rsalz@bbn.com> in August, 1990. |
1790 | * This code has no copyright. |
1791 | * |
1792 | * 21-Jul-1994 Charles Bailey bailey@genetics.upenn.edu |
1793 | * Minor modifications to original routines. |
1794 | */ |
1795 | |
1796 | /* Number of elements in vms_versions array */ |
1797 | #define VERSIZE(e) (sizeof e->vms_versions / sizeof e->vms_versions[0]) |
1798 | |
1799 | /* |
1800 | * Open a directory, return a handle for later use. |
1801 | */ |
1802 | /*{{{ DIR *opendir(char*name) */ |
1803 | DIR * |
1804 | opendir(char *name) |
1805 | { |
1806 | DIR *dd; |
1807 | char dir[NAM$C_MAXRSS+1]; |
1808 | |
1809 | /* Get memory for the handle, and the pattern. */ |
1810 | New(7006,dd,1,DIR); |
1811 | if (do_tovmspath(name,dir,0) == NULL) { |
1812 | Safefree((char *)dd); |
1813 | return(NULL); |
1814 | } |
1815 | New(7007,dd->pattern,strlen(dir)+sizeof "*.*" + 1,char); |
1816 | |
1817 | /* Fill in the fields; mainly playing with the descriptor. */ |
1818 | (void)sprintf(dd->pattern, "%s*.*",dir); |
1819 | dd->context = 0; |
1820 | dd->count = 0; |
1821 | dd->vms_wantversions = 0; |
1822 | dd->pat.dsc$a_pointer = dd->pattern; |
1823 | dd->pat.dsc$w_length = strlen(dd->pattern); |
1824 | dd->pat.dsc$b_dtype = DSC$K_DTYPE_T; |
1825 | dd->pat.dsc$b_class = DSC$K_CLASS_S; |
1826 | |
1827 | return dd; |
1828 | } /* end of opendir() */ |
1829 | /*}}}*/ |
1830 | |
1831 | /* |
1832 | * Set the flag to indicate we want versions or not. |
1833 | */ |
1834 | /*{{{ void vmsreaddirversions(DIR *dd, int flag)*/ |
1835 | void |
1836 | vmsreaddirversions(DIR *dd, int flag) |
1837 | { |
1838 | dd->vms_wantversions = flag; |
1839 | } |
1840 | /*}}}*/ |
1841 | |
1842 | /* |
1843 | * Free up an opened directory. |
1844 | */ |
1845 | /*{{{ void closedir(DIR *dd)*/ |
1846 | void |
1847 | closedir(DIR *dd) |
1848 | { |
1849 | (void)lib$find_file_end(&dd->context); |
1850 | Safefree(dd->pattern); |
1851 | Safefree((char *)dd); |
1852 | } |
1853 | /*}}}*/ |
1854 | |
1855 | /* |
1856 | * Collect all the version numbers for the current file. |
1857 | */ |
1858 | static void |
1859 | collectversions(dd) |
1860 | DIR *dd; |
1861 | { |
1862 | struct dsc$descriptor_s pat; |
1863 | struct dsc$descriptor_s res; |
1864 | struct dirent *e; |
1865 | char *p, *text, buff[sizeof dd->entry.d_name]; |
1866 | int i; |
1867 | unsigned long context, tmpsts; |
1868 | |
1869 | /* Convenient shorthand. */ |
1870 | e = &dd->entry; |
1871 | |
1872 | /* Add the version wildcard, ignoring the "*.*" put on before */ |
1873 | i = strlen(dd->pattern); |
1874 | New(7008,text,i + e->d_namlen + 3,char); |
1875 | (void)strcpy(text, dd->pattern); |
1876 | (void)sprintf(&text[i - 3], "%s;*", e->d_name); |
1877 | |
1878 | /* Set up the pattern descriptor. */ |
1879 | pat.dsc$a_pointer = text; |
1880 | pat.dsc$w_length = i + e->d_namlen - 1; |
1881 | pat.dsc$b_dtype = DSC$K_DTYPE_T; |
1882 | pat.dsc$b_class = DSC$K_CLASS_S; |
1883 | |
1884 | /* Set up result descriptor. */ |
1885 | res.dsc$a_pointer = buff; |
1886 | res.dsc$w_length = sizeof buff - 2; |
1887 | res.dsc$b_dtype = DSC$K_DTYPE_T; |
1888 | res.dsc$b_class = DSC$K_CLASS_S; |
1889 | |
1890 | /* Read files, collecting versions. */ |
1891 | for (context = 0, e->vms_verscount = 0; |
1892 | e->vms_verscount < VERSIZE(e); |
1893 | e->vms_verscount++) { |
1894 | tmpsts = lib$find_file(&pat, &res, &context); |
1895 | if (tmpsts == RMS$_NMF || context == 0) break; |
748a9306 |
1896 | _ckvmssts(tmpsts); |
a0d0e21e |
1897 | buff[sizeof buff - 1] = '\0'; |
748a9306 |
1898 | if ((p = strchr(buff, ';'))) |
a0d0e21e |
1899 | e->vms_versions[e->vms_verscount] = atoi(p + 1); |
1900 | else |
1901 | e->vms_versions[e->vms_verscount] = -1; |
1902 | } |
1903 | |
748a9306 |
1904 | _ckvmssts(lib$find_file_end(&context)); |
a0d0e21e |
1905 | Safefree(text); |
1906 | |
1907 | } /* end of collectversions() */ |
1908 | |
1909 | /* |
1910 | * Read the next entry from the directory. |
1911 | */ |
1912 | /*{{{ struct dirent *readdir(DIR *dd)*/ |
1913 | struct dirent * |
1914 | readdir(DIR *dd) |
1915 | { |
1916 | struct dsc$descriptor_s res; |
1917 | char *p, buff[sizeof dd->entry.d_name]; |
a0d0e21e |
1918 | unsigned long int tmpsts; |
1919 | |
1920 | /* Set up result descriptor, and get next file. */ |
1921 | res.dsc$a_pointer = buff; |
1922 | res.dsc$w_length = sizeof buff - 2; |
1923 | res.dsc$b_dtype = DSC$K_DTYPE_T; |
1924 | res.dsc$b_class = DSC$K_CLASS_S; |
1925 | dd->count++; |
1926 | tmpsts = lib$find_file(&dd->pat, &res, &dd->context); |
748a9306 |
1927 | if ( tmpsts == RMS$_NMF || tmpsts == RMS$_FNF || |
1928 | dd->context == 0) return NULL; /* None left. */ |
a0d0e21e |
1929 | |
1930 | /* Force the buffer to end with a NUL, and downcase name to match C convention. */ |
1931 | buff[sizeof buff - 1] = '\0'; |
1932 | for (p = buff; !isspace(*p); p++) *p = _tolower(*p); |
1933 | *p = '\0'; |
1934 | |
1935 | /* Skip any directory component and just copy the name. */ |
748a9306 |
1936 | if ((p = strchr(buff, ']'))) (void)strcpy(dd->entry.d_name, p + 1); |
a0d0e21e |
1937 | else (void)strcpy(dd->entry.d_name, buff); |
1938 | |
1939 | /* Clobber the version. */ |
748a9306 |
1940 | if ((p = strchr(dd->entry.d_name, ';'))) *p = '\0'; |
a0d0e21e |
1941 | |
1942 | dd->entry.d_namlen = strlen(dd->entry.d_name); |
1943 | dd->entry.vms_verscount = 0; |
1944 | if (dd->vms_wantversions) collectversions(dd); |
1945 | return &dd->entry; |
1946 | |
1947 | } /* end of readdir() */ |
1948 | /*}}}*/ |
1949 | |
1950 | /* |
1951 | * Return something that can be used in a seekdir later. |
1952 | */ |
1953 | /*{{{ long telldir(DIR *dd)*/ |
1954 | long |
1955 | telldir(DIR *dd) |
1956 | { |
1957 | return dd->count; |
1958 | } |
1959 | /*}}}*/ |
1960 | |
1961 | /* |
1962 | * Return to a spot where we used to be. Brute force. |
1963 | */ |
1964 | /*{{{ void seekdir(DIR *dd,long count)*/ |
1965 | void |
1966 | seekdir(DIR *dd, long count) |
1967 | { |
1968 | int vms_wantversions; |
a0d0e21e |
1969 | |
1970 | /* If we haven't done anything yet... */ |
1971 | if (dd->count == 0) |
1972 | return; |
1973 | |
1974 | /* Remember some state, and clear it. */ |
1975 | vms_wantversions = dd->vms_wantversions; |
1976 | dd->vms_wantversions = 0; |
748a9306 |
1977 | _ckvmssts(lib$find_file_end(&dd->context)); |
a0d0e21e |
1978 | dd->context = 0; |
1979 | |
1980 | /* The increment is in readdir(). */ |
1981 | for (dd->count = 0; dd->count < count; ) |
1982 | (void)readdir(dd); |
1983 | |
1984 | dd->vms_wantversions = vms_wantversions; |
1985 | |
1986 | } /* end of seekdir() */ |
1987 | /*}}}*/ |
1988 | |
1989 | /* VMS subprocess management |
1990 | * |
1991 | * my_vfork() - just a vfork(), after setting a flag to record that |
1992 | * the current script is trying a Unix-style fork/exec. |
1993 | * |
1994 | * vms_do_aexec() and vms_do_exec() are called in response to the |
1995 | * perl 'exec' function. If this follows a vfork call, then they |
1996 | * call out the the regular perl routines in doio.c which do an |
1997 | * execvp (for those who really want to try this under VMS). |
1998 | * Otherwise, they do exactly what the perl docs say exec should |
1999 | * do - terminate the current script and invoke a new command |
2000 | * (See below for notes on command syntax.) |
2001 | * |
2002 | * do_aspawn() and do_spawn() implement the VMS side of the perl |
2003 | * 'system' function. |
2004 | * |
2005 | * Note on command arguments to perl 'exec' and 'system': When handled |
2006 | * in 'VMSish fashion' (i.e. not after a call to vfork) The args |
2007 | * are concatenated to form a DCL command string. If the first arg |
2008 | * begins with '$' (i.e. the perl script had "\$ Type" or some such), |
2009 | * the the command string is hrnded off to DCL directly. Otherwise, |
2010 | * the first token of the command is taken as the filespec of an image |
2011 | * to run. The filespec is expanded using a default type of '.EXE' and |
2012 | * the process defaults for device, directory, etc., and the resultant |
2013 | * filespec is invoked using the DCL verb 'MCR', and passed the rest of |
2014 | * the command string as parameters. This is perhaps a bit compicated, |
2015 | * but I hope it will form a happy medium between what VMS folks expect |
2016 | * from lib$spawn and what Unix folks expect from exec. |
2017 | */ |
2018 | |
2019 | static int vfork_called; |
2020 | |
2021 | /*{{{int my_vfork()*/ |
2022 | int |
2023 | my_vfork() |
2024 | { |
748a9306 |
2025 | vfork_called++; |
a0d0e21e |
2026 | return vfork(); |
2027 | } |
2028 | /*}}}*/ |
2029 | |
2030 | static void |
2031 | setup_argstr(SV *really, SV **mark, SV **sp, char **argstr) |
2032 | { |
2033 | char *tmps, *junk; |
2034 | register size_t cmdlen = 0; |
2035 | size_t rlen; |
2036 | register SV **idx; |
2037 | |
2038 | idx = mark; |
748a9306 |
2039 | tmps = SvPV(really,rlen); |
2040 | if (really && *tmps) { |
a0d0e21e |
2041 | cmdlen += rlen + 1; |
2042 | idx++; |
2043 | } |
2044 | |
2045 | for (idx++; idx <= sp; idx++) { |
2046 | if (*idx) { |
2047 | junk = SvPVx(*idx,rlen); |
2048 | cmdlen += rlen ? rlen + 1 : 0; |
2049 | } |
2050 | } |
2051 | New(401,*argstr,cmdlen, char); |
2052 | |
2053 | if (*tmps) { |
2054 | strcpy(*argstr,tmps); |
2055 | mark++; |
2056 | } |
2057 | else **argstr = '\0'; |
2058 | while (++mark <= sp) { |
2059 | if (*mark) { |
2060 | strcat(*argstr," "); |
2061 | strcat(*argstr,SvPVx(*mark,na)); |
2062 | } |
2063 | } |
2064 | |
2065 | } /* end of setup_argstr() */ |
2066 | |
2067 | static unsigned long int |
2068 | setup_cmddsc(char *cmd, struct dsc$descriptor_s *cmddsc, int check_img) |
2069 | { |
2070 | char resspec[NAM$C_MAXRSS+1]; |
2071 | $DESCRIPTOR(defdsc,".EXE"); |
2072 | $DESCRIPTOR(resdsc,resspec); |
2073 | struct dsc$descriptor_s imgdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; |
2074 | unsigned long int cxt = 0, flags = 1, retsts; |
2075 | register char *s, *rest, *cp; |
2076 | register int isdcl = 0; |
2077 | |
2078 | s = cmd; |
2079 | while (*s && isspace(*s)) s++; |
2080 | if (check_img) { |
2081 | if (*s == '$') { /* Check whether this is a DCL command: leading $ and */ |
2082 | isdcl = 1; /* no dev/dir separators (i.e. not a foreign command) */ |
2083 | for (cp = s; *cp && *cp != '/' && !isspace(*cp); cp++) { |
2084 | if (*cp == ':' || *cp == '[' || *cp == '<') { |
2085 | isdcl = 0; |
2086 | break; |
2087 | } |
2088 | } |
2089 | } |
2090 | } |
2091 | else isdcl = 1; |
2092 | if (isdcl) { /* It's a DCL command, just do it. */ |
2093 | cmddsc->dsc$a_pointer = cmd; |
2094 | cmddsc->dsc$w_length = strlen(cmd); |
2095 | } |
2096 | else { /* assume first token is an image spec */ |
2097 | cmd = s; |
2098 | while (*s && !isspace(*s)) s++; |
2099 | rest = *s ? s : 0; |
2100 | imgdsc.dsc$a_pointer = cmd; |
2101 | imgdsc.dsc$w_length = s - cmd; |
2102 | retsts = lib$find_file(&imgdsc,&resdsc,&cxt,&defdsc,0,0,&flags); |
2103 | if ((retsts & STS$M_CODE) == (SHR$_NOWILD & STS$M_CODE)) return retsts; |
2104 | else { |
748a9306 |
2105 | _ckvmssts(retsts); |
2106 | _ckvmssts(lib$find_file_end(&cxt)); |
a0d0e21e |
2107 | s = resspec; |
2108 | while (*s && !isspace(*s)) s++; |
2109 | *s = '\0'; |
2110 | New(402,Cmd,6 + s - resspec + (rest ? strlen(rest) : 0),char); |
2111 | strcpy(Cmd,"$ MCR "); |
2112 | strcat(Cmd,resspec); |
2113 | if (rest) strcat(Cmd,rest); |
2114 | cmddsc->dsc$a_pointer = Cmd; |
2115 | cmddsc->dsc$w_length = strlen(Cmd); |
2116 | } |
2117 | } |
2118 | |
2119 | return SS$_NORMAL; |
2120 | } /* end of setup_cmddsc() */ |
2121 | |
2122 | /* {{{ bool vms_do_aexec(SV *really,SV **mark,SV **sp) */ |
2123 | bool |
2124 | vms_do_aexec(SV *really,SV **mark,SV **sp) |
2125 | { |
2126 | |
2127 | if (sp > mark) { |
2128 | if (vfork_called) { /* this follows a vfork - act Unixish */ |
748a9306 |
2129 | vfork_called--; |
2130 | if (vfork_called < 0) { |
2131 | warn("Internal inconsistency in tracking vforks"); |
2132 | vfork_called = 0; |
2133 | } |
2134 | else return do_aexec(really,mark,sp); |
a0d0e21e |
2135 | } |
748a9306 |
2136 | |
2137 | /* no vfork - act VMSish */ |
2138 | setup_argstr(really,mark,sp,Argv); |
2139 | return vms_do_exec(*Argv); |
a0d0e21e |
2140 | } |
2141 | |
2142 | return FALSE; |
2143 | } /* end of vms_do_aexec() */ |
2144 | /*}}}*/ |
2145 | |
2146 | /* {{{bool vms_do_exec(char *cmd) */ |
2147 | bool |
2148 | vms_do_exec(char *cmd) |
2149 | { |
2150 | |
2151 | if (vfork_called) { /* this follows a vfork - act Unixish */ |
748a9306 |
2152 | vfork_called--; |
2153 | if (vfork_called < 0) { |
2154 | warn("Internal inconsistency in tracking vforks"); |
2155 | vfork_called = 0; |
2156 | } |
2157 | else return do_exec(cmd); |
a0d0e21e |
2158 | } |
748a9306 |
2159 | |
2160 | { /* no vfork - act VMSish */ |
a0d0e21e |
2161 | struct dsc$descriptor_s cmddsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; |
748a9306 |
2162 | unsigned long int retsts; |
a0d0e21e |
2163 | |
748a9306 |
2164 | if ((retsts = setup_cmddsc(cmd,&cmddsc,1)) & 1) |
2165 | retsts = lib$do_command(&cmddsc); |
a0d0e21e |
2166 | |
748a9306 |
2167 | set_errno(EVMSERR); |
2168 | set_vaxc_errno(retsts); |
a0d0e21e |
2169 | if (dowarn) |
2170 | warn("Can't exec \"%s\": %s", cmddsc.dsc$a_pointer, Strerror(errno)); |
2171 | do_execfree(); |
2172 | } |
2173 | |
2174 | return FALSE; |
2175 | |
2176 | } /* end of vms_do_exec() */ |
2177 | /*}}}*/ |
2178 | |
2179 | unsigned long int do_spawn(char *); |
2180 | |
2181 | /* {{{ unsigned long int do_aspawn(SV *really,SV **mark,SV **sp) */ |
2182 | unsigned long int |
2183 | do_aspawn(SV *really,SV **mark,SV **sp) |
2184 | { |
2185 | |
2186 | if (sp > mark) { |
748a9306 |
2187 | setup_argstr(really,mark,sp,Argv); |
2188 | return do_spawn(*Argv); |
a0d0e21e |
2189 | } |
2190 | |
2191 | return SS$_ABORT; |
2192 | } /* end of do_aspawn() */ |
2193 | /*}}}*/ |
2194 | |
2195 | /* {{{unsigned long int do_spawn(char *cmd) */ |
2196 | unsigned long int |
2197 | do_spawn(char *cmd) |
2198 | { |
2199 | struct dsc$descriptor_s cmddsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; |
2200 | unsigned long int substs; |
2201 | |
748a9306 |
2202 | if (!cmd || !*cmd) { |
2203 | _ckvmssts(lib$spawn(0,0,0,0,0,&substs,0,0,0,0,0)); |
2204 | } |
2205 | else if ((substs = setup_cmddsc(cmd,&cmddsc,0)) & 1) { |
2206 | _ckvmssts(lib$spawn(&cmddsc,0,0,0,0,&substs,0,0,0,0,0)); |
2207 | } |
a0d0e21e |
2208 | |
2209 | if (!(substs&1)) { |
748a9306 |
2210 | set_errno(EVMSERR); |
2211 | set_vaxc_errno(substs); |
a0d0e21e |
2212 | if (dowarn) |
748a9306 |
2213 | warn("Can't exec \"%s\": %s", |
2214 | (cmd && *cmd) ? cmddsc.dsc$a_pointer : "", Strerror(errno)); |
a0d0e21e |
2215 | } |
2216 | return substs; |
2217 | |
2218 | } /* end of do_spawn() */ |
2219 | /*}}}*/ |
2220 | |
2221 | /* |
2222 | * A simple fwrite replacement which outputs itmsz*nitm chars without |
2223 | * introducing record boundaries every itmsz chars. |
2224 | */ |
2225 | /*{{{ int my_fwrite(void *src, size_t itmsz, size_t nitm, FILE *dest)*/ |
2226 | int |
2227 | my_fwrite(void *src, size_t itmsz, size_t nitm, FILE *dest) |
2228 | { |
2229 | register char *cp, *end; |
2230 | |
2231 | end = (char *)src + itmsz * nitm; |
2232 | |
2233 | while ((char *)src <= end) { |
2234 | for (cp = src; cp <= end; cp++) if (!*cp) break; |
2235 | if (fputs(src,dest) == EOF) return EOF; |
2236 | if (cp < end) |
2237 | if (fputc('\0',dest) == EOF) return EOF; |
2238 | src = cp + 1; |
2239 | } |
2240 | |
2241 | return 1; |
2242 | |
2243 | } /* end of my_fwrite() */ |
2244 | /*}}}*/ |
2245 | |
748a9306 |
2246 | /* |
2247 | * Here are replacements for the following Unix routines in the VMS environment: |
2248 | * getpwuid Get information for a particular UIC or UID |
2249 | * getpwnam Get information for a named user |
2250 | * getpwent Get information for each user in the rights database |
2251 | * setpwent Reset search to the start of the rights database |
2252 | * endpwent Finish searching for users in the rights database |
2253 | * |
2254 | * getpwuid, getpwnam, and getpwent return a pointer to the passwd structure |
2255 | * (defined in pwd.h), which contains the following fields:- |
2256 | * struct passwd { |
2257 | * char *pw_name; Username (in lower case) |
2258 | * char *pw_passwd; Hashed password |
2259 | * unsigned int pw_uid; UIC |
2260 | * unsigned int pw_gid; UIC group number |
2261 | * char *pw_unixdir; Default device/directory (VMS-style) |
2262 | * char *pw_gecos; Owner name |
2263 | * char *pw_dir; Default device/directory (Unix-style) |
2264 | * char *pw_shell; Default CLI name (eg. DCL) |
2265 | * }; |
2266 | * If the specified user does not exist, getpwuid and getpwnam return NULL. |
2267 | * |
2268 | * pw_uid is the full UIC (eg. what's returned by stat() in st_uid). |
2269 | * not the UIC member number (eg. what's returned by getuid()), |
2270 | * getpwuid() can accept either as input (if uid is specified, the caller's |
2271 | * UIC group is used), though it won't recognise gid=0. |
2272 | * |
2273 | * Note that in VMS it is necessary to have GRPPRV or SYSPRV to return |
2274 | * information about other users in your group or in other groups, respectively. |
2275 | * If the required privilege is not available, then these routines fill only |
2276 | * the pw_name, pw_uid, and pw_gid fields (the others point to an empty |
2277 | * string). |
2278 | * |
2279 | * By Tim Adye (T.J.Adye@rl.ac.uk), 10th February 1995. |
2280 | */ |
2281 | |
2282 | /* sizes of various UAF record fields */ |
2283 | #define UAI$S_USERNAME 12 |
2284 | #define UAI$S_IDENT 31 |
2285 | #define UAI$S_OWNER 31 |
2286 | #define UAI$S_DEFDEV 31 |
2287 | #define UAI$S_DEFDIR 63 |
2288 | #define UAI$S_DEFCLI 31 |
2289 | #define UAI$S_PWD 8 |
2290 | |
2291 | #define valid_uic(uic) ((uic).uic$v_format == UIC$K_UIC_FORMAT && \ |
2292 | (uic).uic$v_member != UIC$K_WILD_MEMBER && \ |
2293 | (uic).uic$v_group != UIC$K_WILD_GROUP) |
2294 | |
2295 | static const char __empty[]= ""; |
2296 | static const struct passwd __passwd_empty= |
2297 | {(char *) __empty, (char *) __empty, 0, 0, |
2298 | (char *) __empty, (char *) __empty, (char *) __empty, (char *) __empty}; |
2299 | static int contxt= 0; |
2300 | static struct passwd __pwdcache; |
2301 | static char __pw_namecache[UAI$S_IDENT+1]; |
2302 | |
2303 | static char *_mystrtolower(char *str) |
2304 | { |
2305 | if (str) for (; *str; ++str) *str= tolower(*str); |
2306 | return str; |
2307 | } |
2308 | |
2309 | /* |
2310 | * This routine does most of the work extracting the user information. |
2311 | */ |
2312 | static int fillpasswd (const char *name, struct passwd *pwd) |
a0d0e21e |
2313 | { |
748a9306 |
2314 | static struct { |
2315 | unsigned char length; |
2316 | char pw_gecos[UAI$S_OWNER+1]; |
2317 | } owner; |
2318 | static union uicdef uic; |
2319 | static struct { |
2320 | unsigned char length; |
2321 | char pw_dir[UAI$S_DEFDEV+UAI$S_DEFDIR+1]; |
2322 | } defdev; |
2323 | static struct { |
2324 | unsigned char length; |
2325 | char unixdir[UAI$_DEFDEV+UAI$S_DEFDIR+1]; |
2326 | } defdir; |
2327 | static struct { |
2328 | unsigned char length; |
2329 | char pw_shell[UAI$S_DEFCLI+1]; |
2330 | } defcli; |
2331 | static char pw_passwd[UAI$S_PWD+1]; |
2332 | |
2333 | static unsigned short lowner, luic, ldefdev, ldefdir, ldefcli, lpwd; |
2334 | struct dsc$descriptor_s name_desc; |
2335 | int status; |
2336 | |
2337 | static const struct itmlst_3 itmlst[]= { |
2338 | {UAI$S_OWNER+1, UAI$_OWNER, &owner, &lowner}, |
2339 | {sizeof(uic), UAI$_UIC, &uic, &luic}, |
2340 | {UAI$S_DEFDEV+1, UAI$_DEFDEV, &defdev, &ldefdev}, |
2341 | {UAI$S_DEFDIR+1, UAI$_DEFDIR, &defdir, &ldefdir}, |
2342 | {UAI$S_DEFCLI+1, UAI$_DEFCLI, &defcli, &ldefcli}, |
2343 | {UAI$S_PWD, UAI$_PWD, pw_passwd, &lpwd}, |
2344 | {0, 0, NULL, NULL}}; |
2345 | |
2346 | name_desc.dsc$w_length= strlen(name); |
2347 | name_desc.dsc$b_dtype= DSC$K_DTYPE_T; |
2348 | name_desc.dsc$b_class= DSC$K_CLASS_S; |
2349 | name_desc.dsc$a_pointer= (char *) name; |
2350 | |
2351 | /* Note that sys$getuai returns many fields as counted strings. */ |
2352 | status= sys$getuai(0, 0, &name_desc, &itmlst, 0, 0, 0); |
2353 | if (!(status&1)) return status; |
2354 | |
2355 | if ((int) owner.length < lowner) lowner= (int) owner.length; |
2356 | if ((int) defdev.length < ldefdev) ldefdev= (int) defdev.length; |
2357 | if ((int) defdir.length < ldefdir) ldefdir= (int) defdir.length; |
2358 | if ((int) defcli.length < ldefcli) ldefcli= (int) defcli.length; |
2359 | memcpy(&defdev.pw_dir[ldefdev], &defdir.unixdir[0], ldefdir); |
2360 | owner.pw_gecos[lowner]= '\0'; |
2361 | defdev.pw_dir[ldefdev+ldefdir]= '\0'; |
2362 | defcli.pw_shell[ldefcli]= '\0'; |
2363 | if (valid_uic(uic)) { |
2364 | pwd->pw_uid= uic.uic$l_uic; |
2365 | pwd->pw_gid= uic.uic$v_group; |
2366 | } |
2367 | else |
2368 | warn("getpwnam returned invalid UIC %#o for user \"%s\""); |
2369 | pwd->pw_passwd= pw_passwd; |
2370 | pwd->pw_gecos= owner.pw_gecos; |
2371 | pwd->pw_dir= defdev.pw_dir; |
2372 | pwd->pw_unixdir= do_tounixpath(defdev.pw_dir, defdir.unixdir,1); |
2373 | pwd->pw_shell= defcli.pw_shell; |
2374 | if (pwd->pw_unixdir && pwd->pw_unixdir[0]) { |
2375 | int ldir; |
2376 | ldir= strlen(pwd->pw_unixdir) - 1; |
2377 | if (pwd->pw_unixdir[ldir]=='/') pwd->pw_unixdir[ldir]= '\0'; |
2378 | } |
2379 | else |
2380 | strcpy(pwd->pw_unixdir, pwd->pw_dir); |
2381 | _mystrtolower(pwd->pw_unixdir); |
2382 | return status; |
a0d0e21e |
2383 | } |
748a9306 |
2384 | |
2385 | /* |
2386 | * Get information for a named user. |
2387 | */ |
2388 | /*{{{struct passwd *getpwnam(char *name)*/ |
2389 | struct passwd *my_getpwnam(char *name) |
2390 | { |
2391 | struct dsc$descriptor_s name_desc; |
2392 | union uicdef uic; |
2393 | unsigned long int status, stat; |
2394 | |
2395 | __pwdcache = __passwd_empty; |
2396 | if ((status = fillpasswd(name, &__pwdcache)) == SS$_NOSYSPRV |
2397 | || status == SS$_NOGRPPRV || status == RMS$_RNF) { |
2398 | /* We still may be able to determine pw_uid and pw_gid */ |
2399 | name_desc.dsc$w_length= strlen(name); |
2400 | name_desc.dsc$b_dtype= DSC$K_DTYPE_T; |
2401 | name_desc.dsc$b_class= DSC$K_CLASS_S; |
2402 | name_desc.dsc$a_pointer= (char *) name; |
2403 | if ((stat = sys$asctoid(&name_desc, &uic, 0)) == SS$_NORMAL) { |
2404 | __pwdcache.pw_uid= uic.uic$l_uic; |
2405 | __pwdcache.pw_gid= uic.uic$v_group; |
2406 | } |
2407 | else if (stat == SS$_NOSUCHID || stat == RMS$_PRV) return NULL; |
2408 | else { _ckvmssts(stat); } |
2409 | } |
2410 | else { _ckvmssts(status); } |
2411 | strncpy(__pw_namecache, name, sizeof(__pw_namecache)); |
2412 | __pw_namecache[sizeof __pw_namecache - 1] = '\0'; |
2413 | __pwdcache.pw_name= __pw_namecache; |
2414 | return &__pwdcache; |
2415 | } /* end of my_getpwnam() */ |
a0d0e21e |
2416 | /*}}}*/ |
2417 | |
748a9306 |
2418 | /* |
2419 | * Get information for a particular UIC or UID. |
2420 | * Called by my_getpwent with uid=-1 to list all users. |
2421 | */ |
2422 | /*{{{struct passwd *my_getpwuid(Uid_t uid)*/ |
2423 | struct passwd *my_getpwuid(Uid_t uid) |
a0d0e21e |
2424 | { |
748a9306 |
2425 | const $DESCRIPTOR(name_desc,__pw_namecache); |
2426 | unsigned short lname; |
2427 | union uicdef uic; |
2428 | unsigned long int status; |
2429 | |
2430 | if (uid == (unsigned int) -1) { |
2431 | do { |
2432 | status = sys$idtoasc(-1, &lname, &name_desc, &uic, 0, &contxt); |
2433 | if (status == SS$_NOSUCHID || status == RMS$_PRV) { |
2434 | my_endpwent(); |
2435 | return NULL; |
2436 | } |
2437 | else { _ckvmssts(status); } |
2438 | } while (!valid_uic (uic)); |
2439 | } |
2440 | else { |
2441 | uic.uic$l_uic= uid; |
2442 | if (!uic.uic$v_group) uic.uic$v_group= getgid(); |
2443 | if (valid_uic(uic)) |
2444 | status = sys$idtoasc(uic.uic$l_uic, &lname, &name_desc, 0, 0, 0); |
2445 | else status = SS$_IVIDENT; |
2446 | _ckvmssts(status); |
2447 | } |
2448 | __pw_namecache[lname]= '\0'; |
2449 | _mystrtolower(__pw_namecache); |
2450 | |
2451 | __pwdcache = __passwd_empty; |
2452 | __pwdcache.pw_name = __pw_namecache; |
2453 | |
2454 | /* Fill in the uid and gid in case fillpasswd can't (eg. no privilege). |
2455 | The identifier's value is usually the UIC, but it doesn't have to be, |
2456 | so if we can, we let fillpasswd update this. */ |
2457 | __pwdcache.pw_uid = uic.uic$l_uic; |
2458 | __pwdcache.pw_gid = uic.uic$v_group; |
2459 | |
2460 | status = fillpasswd(__pw_namecache, &__pwdcache); |
2461 | if (status != SS$_NOSYSPRV && status != SS$_NOGRPPRV && |
2462 | status != RMS$_RNF) { _ckvmssts(status); } |
2463 | return &__pwdcache; |
a0d0e21e |
2464 | |
748a9306 |
2465 | } /* end of my_getpwuid() */ |
2466 | /*}}}*/ |
2467 | |
2468 | /* |
2469 | * Get information for next user. |
2470 | */ |
2471 | /*{{{struct passwd *my_getpwent()*/ |
2472 | struct passwd *my_getpwent() |
2473 | { |
2474 | return (my_getpwuid((unsigned int) -1)); |
2475 | } |
2476 | /*}}}*/ |
a0d0e21e |
2477 | |
748a9306 |
2478 | /* |
2479 | * Finish searching rights database for users. |
2480 | */ |
2481 | /*{{{void my_endpwent()*/ |
2482 | void my_endpwent() |
2483 | { |
2484 | if (contxt) { |
2485 | _ckvmssts(sys$finish_rdb(&contxt)); |
2486 | contxt= 0; |
2487 | } |
a0d0e21e |
2488 | } |
2489 | /*}}}*/ |
748a9306 |
2490 | |
2491 | /* |
2492 | * flex_stat, flex_fstat |
2493 | * basic stat, but gets it right when asked to stat |
2494 | * a Unix-style path ending in a directory name (e.g. dir1/dir2/dir3) |
2495 | */ |
2496 | |
2497 | /* encode_dev packs a VMS device name string into an integer to allow |
2498 | * simple comparisons. This can be used, for example, to check whether two |
2499 | * files are located on the same device, by comparing their encoded device |
2500 | * names. Even a string comparison would not do, because stat() reuses the |
2501 | * device name buffer for each call; so without encode_dev, it would be |
2502 | * necessary to save the buffer and use strcmp (this would mean a number of |
2503 | * changes to the standard Perl code, to say nothing of what a Perl script |
2504 | * would have to do. |
2505 | * |
2506 | * The device lock id, if it exists, should be unique (unless perhaps compared |
2507 | * with lock ids transferred from other nodes). We have a lock id if the disk is |
2508 | * mounted cluster-wide, which is when we tend to get long (host-qualified) |
2509 | * device names. Thus we use the lock id in preference, and only if that isn't |
2510 | * available, do we try to pack the device name into an integer (flagged by |
2511 | * the sign bit (LOCKID_MASK) being set). |
2512 | * |
2513 | * Note that encode_dev cann guarantee an 1-to-1 correspondence twixt device |
2514 | * name and its encoded form, but it seems very unlikely that we will find |
2515 | * two files on different disks that share the same encoded device names, |
2516 | * and even more remote that they will share the same file id (if the test |
2517 | * is to check for the same file). |
2518 | * |
2519 | * A better method might be to use sys$device_scan on the first call, and to |
2520 | * search for the device, returning an index into the cached array. |
2521 | * The number returned would be more intelligable. |
2522 | * This is probably not worth it, and anyway would take quite a bit longer |
2523 | * on the first call. |
2524 | */ |
2525 | #define LOCKID_MASK 0x80000000 /* Use 0 to force device name use only */ |
2526 | static dev_t encode_dev (const char *dev) |
2527 | { |
2528 | int i; |
2529 | unsigned long int f; |
2530 | dev_t enc; |
2531 | char c; |
2532 | const char *q; |
2533 | |
2534 | if (!dev || !dev[0]) return 0; |
2535 | |
2536 | #if LOCKID_MASK |
2537 | { |
2538 | struct dsc$descriptor_s dev_desc; |
2539 | unsigned long int status, lockid, item = DVI$_LOCKID; |
2540 | |
2541 | /* For cluster-mounted disks, the disk lock identifier is unique, so we |
2542 | can try that first. */ |
2543 | dev_desc.dsc$w_length = strlen (dev); |
2544 | dev_desc.dsc$b_dtype = DSC$K_DTYPE_T; |
2545 | dev_desc.dsc$b_class = DSC$K_CLASS_S; |
2546 | dev_desc.dsc$a_pointer = (char *) dev; |
2547 | _ckvmssts(lib$getdvi(&item, 0, &dev_desc, &lockid, 0, 0)); |
2548 | if (lockid) return (lockid & ~LOCKID_MASK); |
2549 | } |
a0d0e21e |
2550 | #endif |
748a9306 |
2551 | |
2552 | /* Otherwise we try to encode the device name */ |
2553 | enc = 0; |
2554 | f = 1; |
2555 | i = 0; |
2556 | for (q = dev + strlen(dev); q--; q >= dev) { |
2557 | if (isdigit (*q)) |
2558 | c= (*q) - '0'; |
2559 | else if (isalpha (toupper (*q))) |
2560 | c= toupper (*q) - 'A' + (char)10; |
2561 | else |
2562 | continue; /* Skip '$'s */ |
2563 | i++; |
2564 | if (i>6) break; /* 36^7 is too large to fit in an unsigned long int */ |
2565 | if (i>1) f *= 36; |
2566 | enc += f * (unsigned long int) c; |
2567 | } |
2568 | return (enc | LOCKID_MASK); /* May have already overflowed into bit 31 */ |
2569 | |
2570 | } /* end of encode_dev() */ |
2571 | |
2572 | static char namecache[NAM$C_MAXRSS+1]; |
2573 | |
2574 | static int |
2575 | is_null_device(name) |
2576 | const char *name; |
2577 | { |
2578 | /* The VMS null device is named "_NLA0:", usually abbreviated as "NL:". |
2579 | The underscore prefix, controller letter, and unit number are |
2580 | independently optional; for our purposes, the colon punctuation |
2581 | is not. The colon can be trailed by optional directory and/or |
2582 | filename, but two consecutive colons indicates a nodename rather |
2583 | than a device. [pr] */ |
2584 | if (*name == '_') ++name; |
2585 | if (tolower(*name++) != 'n') return 0; |
2586 | if (tolower(*name++) != 'l') return 0; |
2587 | if (tolower(*name) == 'a') ++name; |
2588 | if (*name == '0') ++name; |
2589 | return (*name++ == ':') && (*name != ':'); |
2590 | } |
2591 | |
2592 | /* Do the permissions allow some operation? Assumes statcache already set. */ |
2593 | /* Do this via $Check_Access on VMS, since the CRTL stat() returns only a |
2594 | * subset of the applicable information. |
2595 | */ |
2596 | /*{{{I32 cando(I32 bit, I32 effective, struct stat *statbufp)*/ |
2597 | I32 |
2598 | cando(I32 bit, I32 effective, struct stat *statbufp) |
2599 | { |
2600 | if (statbufp == &statcache) |
2601 | return cando_by_name(bit,effective,namecache); |
2602 | else { |
2603 | char fname[NAM$C_MAXRSS+1]; |
2604 | unsigned long int retsts; |
2605 | struct dsc$descriptor_s devdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}, |
2606 | namdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; |
2607 | |
2608 | /* If the struct mystat is stale, we're OOL; stat() overwrites the |
2609 | device name on successive calls */ |
2610 | devdsc.dsc$a_pointer = statbufp->st_devnam; |
2611 | devdsc.dsc$w_length = strlen(statbufp->st_devnam); |
2612 | namdsc.dsc$a_pointer = fname; |
2613 | namdsc.dsc$w_length = sizeof fname - 1; |
2614 | |
2615 | retsts = lib$fid_to_name(&devdsc,statbufp->st_inode_u.fid,&namdsc, |
2616 | &namdsc.dsc$w_length,0,0); |
2617 | if (retsts & 1) { |
2618 | fname[namdsc.dsc$w_length] = '\0'; |
2619 | return cando_by_name(bit,effective,fname); |
2620 | } |
2621 | else if (retsts == SS$_NOSUCHDEV || retsts == SS$_NOSUCHFILE) { |
2622 | warn("Can't get filespec - stale stat buffer?\n"); |
2623 | return FALSE; |
2624 | } |
2625 | _ckvmssts(retsts); |
2626 | return FALSE; /* Should never get to here */ |
2627 | } |
2628 | } |
2629 | /*}}}*/ |
2630 | |
2631 | /*{{{I32 cando_by_name(I32 bit, I32 effective, char *fname)*/ |
2632 | I32 |
2633 | cando_by_name(I32 bit, I32 effective, char *fname) |
2634 | { |
2635 | static char usrname[L_cuserid]; |
2636 | static struct dsc$descriptor_s usrdsc = |
2637 | {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, usrname}; |
2638 | |
2639 | unsigned long int objtyp = ACL$C_FILE, access, retsts, privused, iosb[2]; |
2640 | unsigned short int retlen; |
2641 | struct dsc$descriptor_s namdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; |
2642 | union prvdef curprv; |
2643 | struct itmlst_3 armlst[3] = {{sizeof access, CHP$_ACCESS, &access, &retlen}, |
2644 | {sizeof privused, CHP$_PRIVUSED, &privused, &retlen},{0,0,0,0}}; |
2645 | struct itmlst_3 jpilst[2] = {{sizeof curprv, JPI$_CURPRIV, &curprv, &retlen}, |
2646 | {0,0,0,0}}; |
2647 | |
2648 | if (!fname || !*fname) return FALSE; |
2649 | if (!usrdsc.dsc$w_length) { |
2650 | cuserid(usrname); |
2651 | usrdsc.dsc$w_length = strlen(usrname); |
2652 | } |
2653 | namdsc.dsc$w_length = strlen(fname); |
2654 | namdsc.dsc$a_pointer = fname; |
2655 | switch (bit) { |
2656 | case S_IXUSR: |
2657 | case S_IXGRP: |
2658 | case S_IXOTH: |
2659 | access = ARM$M_EXECUTE; |
2660 | break; |
2661 | case S_IRUSR: |
2662 | case S_IRGRP: |
2663 | case S_IROTH: |
2664 | access = ARM$M_READ; |
2665 | break; |
2666 | case S_IWUSR: |
2667 | case S_IWGRP: |
2668 | case S_IWOTH: |
2669 | access = ARM$M_WRITE; |
2670 | break; |
2671 | case S_IDUSR: |
2672 | case S_IDGRP: |
2673 | case S_IDOTH: |
2674 | access = ARM$M_DELETE; |
2675 | break; |
2676 | default: |
2677 | return FALSE; |
2678 | } |
2679 | |
2680 | retsts = sys$check_access(&objtyp,&namdsc,&usrdsc,armlst); |
2681 | if (retsts == SS$_NOPRIV || retsts == RMS$_FNF || |
2682 | retsts == RMS$_DIR || retsts == RMS$_DEV) return FALSE; |
2683 | if (retsts == SS$_NORMAL) { |
2684 | if (!privused) return TRUE; |
2685 | /* We can get access, but only by using privs. Do we have the |
2686 | necessary privs currently enabled? */ |
2687 | _ckvmssts(sys$getjpiw(0,0,0,jpilst,iosb,0,0)); |
2688 | if ((privused & CHP$M_BYPASS) && !curprv.prv$v_bypass) return FALSE; |
2689 | if ((privused & CHP$M_SYSPRV) && !curprv.prv$v_sysprv |
2690 | && !curprv.prv$v_bypass) return FALSE; |
2691 | if ((privused & CHP$M_GRPPRV) && !curprv.prv$v_grpprv |
2692 | && !curprv.prv$v_sysprv && !curprv.prv$v_bypass) return FALSE; |
2693 | if ((privused & CHP$M_READALL) && !curprv.prv$v_readall) return FALSE; |
2694 | return TRUE; |
2695 | } |
2696 | _ckvmssts(retsts); |
2697 | |
2698 | return FALSE; /* Should never get here */ |
2699 | |
2700 | } /* end of cando_by_name() */ |
2701 | /*}}}*/ |
2702 | |
2703 | |
2704 | /*{{{ int flex_fstat(int fd, struct stat *statbuf)*/ |
2705 | int |
2706 | flex_fstat(int fd, struct stat *statbuf) |
2707 | { |
2708 | char fspec[NAM$C_MAXRSS+1]; |
2709 | |
2710 | if (!getname(fd,fspec,1)) return -1; |
2711 | return flex_stat(fspec,statbuf); |
2712 | |
2713 | } /* end of flex_fstat() */ |
2714 | /*}}}*/ |
2715 | |
2716 | /*{{{ int flex_stat(char *fspec, struct stat *statbufp)*/ |
2717 | int |
2718 | flex_stat(char *fspec, struct stat *statbufp) |
2719 | { |
2720 | char fileified[NAM$C_MAXRSS+1]; |
2721 | int retval,myretval; |
2722 | struct stat tmpbuf; |
2723 | |
2724 | |
2725 | if (statbufp == &statcache) do_tovmsspec(fspec,namecache,0); |
2726 | if (is_null_device(fspec)) { /* Fake a stat() for the null device */ |
2727 | memset(statbufp,0,sizeof *statbufp); |
2728 | statbufp->st_dev = encode_dev("_NLA0:"); |
2729 | statbufp->st_mode = S_IFBLK | S_IREAD | S_IWRITE | S_IEXEC; |
2730 | statbufp->st_uid = 0x00010001; |
2731 | statbufp->st_gid = 0x0001; |
2732 | time((time_t *)&statbufp->st_mtime); |
2733 | statbufp->st_atime = statbufp->st_ctime = statbufp->st_mtime; |
2734 | return 0; |
2735 | } |
2736 | |
2737 | /* We defined 'stat' as 'mystat' in vmsish.h so that declarations of |
2738 | * 'struct stat' elsewhere in Perl would use our struct. We go back |
2739 | * to the system version here, since we're actually calling their |
2740 | * stat(). |
2741 | */ |
2742 | #undef stat |
2743 | |
2744 | if (do_fileify_dirspec(fspec,fileified,0) == NULL) myretval = -1; |
2745 | else { |
2746 | myretval = stat(fileified,(stat_t *) &tmpbuf); |
2747 | } |
2748 | retval = stat(fspec,(stat_t *) statbufp); |
2749 | if (!myretval) { |
2750 | if (retval == -1) { |
2751 | *statbufp = tmpbuf; |
2752 | retval = 0; |
2753 | } |
2754 | else if (!retval) { /* Dir with same name. Substitute it. */ |
2755 | statbufp->st_mode &= ~S_IFDIR; |
2756 | statbufp->st_mode |= tmpbuf.st_mode & S_IFDIR; |
2757 | strcpy(namecache,fileified); |
2758 | } |
2759 | } |
2760 | if (!retval) statbufp->st_dev = encode_dev(statbufp->st_devnam); |
2761 | return retval; |
2762 | |
2763 | } /* end of flex_stat() */ |
2764 | /*}}}*/ |
2765 | |
2766 | /*** The following glue provides 'hooks' to make some of the routines |
2767 | * from this file available from Perl. These routines are sufficiently |
2768 | * basic, and are required sufficiently early in the build process, |
2769 | * that's it's nice to have them available to miniperl as well as the |
2770 | * full Perl, so they're set up here instead of in an extension. The |
2771 | * Perl code which handles importation of these names into a given |
2772 | * package lives in [.VMS]Filespec.pm in @INC. |
2773 | */ |
2774 | |
2775 | void |
2776 | vmsify_fromperl(CV *cv) |
2777 | { |
2778 | dXSARGS; |
2779 | char *vmsified; |
2780 | |
2781 | if (items != 1) croak("Usage: VMS::Filespec::vmsify(spec)"); |
2782 | vmsified = do_tovmsspec(SvPV(ST(0),na),NULL,1); |
2783 | ST(0) = sv_newmortal(); |
2784 | if (vmsified != NULL) sv_usepvn(ST(0),vmsified,strlen(vmsified)); |
2785 | XSRETURN(1); |
2786 | } |
2787 | |
2788 | void |
2789 | unixify_fromperl(CV *cv) |
2790 | { |
2791 | dXSARGS; |
2792 | char *unixified; |
2793 | |
2794 | if (items != 1) croak("Usage: VMS::Filespec::unixify(spec)"); |
2795 | unixified = do_tounixspec(SvPV(ST(0),na),NULL,1); |
2796 | ST(0) = sv_newmortal(); |
2797 | if (unixified != NULL) sv_usepvn(ST(0),unixified,strlen(unixified)); |
2798 | XSRETURN(1); |
2799 | } |
2800 | |
2801 | void |
2802 | fileify_fromperl(CV *cv) |
2803 | { |
2804 | dXSARGS; |
2805 | char *fileified; |
2806 | |
2807 | if (items != 1) croak("Usage: VMS::Filespec::fileify(spec)"); |
2808 | fileified = do_fileify_dirspec(SvPV(ST(0),na),NULL,1); |
2809 | ST(0) = sv_newmortal(); |
2810 | if (fileified != NULL) sv_usepvn(ST(0),fileified,strlen(fileified)); |
2811 | XSRETURN(1); |
2812 | } |
2813 | |
2814 | void |
2815 | pathify_fromperl(CV *cv) |
2816 | { |
2817 | dXSARGS; |
2818 | char *pathified; |
2819 | |
2820 | if (items != 1) croak("Usage: VMS::Filespec::pathify(spec)"); |
2821 | pathified = do_pathify_dirspec(SvPV(ST(0),na),NULL,1); |
2822 | ST(0) = sv_newmortal(); |
2823 | if (pathified != NULL) sv_usepvn(ST(0),pathified,strlen(pathified)); |
2824 | XSRETURN(1); |
2825 | } |
2826 | |
2827 | void |
2828 | vmspath_fromperl(CV *cv) |
2829 | { |
2830 | dXSARGS; |
2831 | char *vmspath; |
2832 | |
2833 | if (items != 1) croak("Usage: VMS::Filespec::vmspath(spec)"); |
2834 | vmspath = do_tovmspath(SvPV(ST(0),na),NULL,1); |
2835 | ST(0) = sv_newmortal(); |
2836 | if (vmspath != NULL) sv_usepvn(ST(0),vmspath,strlen(vmspath)); |
2837 | XSRETURN(1); |
2838 | } |
2839 | |
2840 | void |
2841 | unixpath_fromperl(CV *cv) |
2842 | { |
2843 | dXSARGS; |
2844 | char *unixpath; |
2845 | |
2846 | if (items != 1) croak("Usage: VMS::Filespec::unixpath(spec)"); |
2847 | unixpath = do_tounixpath(SvPV(ST(0),na),NULL,1); |
2848 | ST(0) = sv_newmortal(); |
2849 | if (unixpath != NULL) sv_usepvn(ST(0),unixpath,strlen(unixpath)); |
2850 | XSRETURN(1); |
2851 | } |
2852 | |
2853 | void |
2854 | candelete_fromperl(CV *cv) |
2855 | { |
2856 | dXSARGS; |
2857 | char vmsspec[NAM$C_MAXRSS+1]; |
2858 | |
2859 | if (items != 1) croak("Usage: VMS::Filespec::candelete(spec)"); |
2860 | if (do_tovmsspec(SvPV(ST(0),na),buf,0) && cando_by_name(S_IDUSR,0,buf)) |
2861 | ST(0) = &sv_yes; |
2862 | else ST(0) = &sv_no; |
2863 | XSRETURN(1); |
2864 | } |
2865 | |
2866 | void |
2867 | init_os_extras() |
2868 | { |
2869 | char* file = __FILE__; |
2870 | |
2871 | newXS("VMS::Filespec::vmsify",vmsify_fromperl,file); |
2872 | newXS("VMS::Filespec::unixify",unixify_fromperl,file); |
2873 | newXS("VMS::Filespec::pathify",pathify_fromperl,file); |
2874 | newXS("VMS::Filespec::fileify",fileify_fromperl,file); |
2875 | newXS("VMS::Filespec::vmspath",vmspath_fromperl,file); |
2876 | newXS("VMS::Filespec::unixpath",unixpath_fromperl,file); |
2877 | newXS("VMS::Filespec::candelete",candelete_fromperl,file); |
2878 | return; |
2879 | } |
2880 | |
2881 | /* End of vms.c */ |