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1 | /* VMS::Stdio - VMS extensions to stdio routines |
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2 | * |
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3 | * Version: 2.1 |
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4 | * Author: Charles Bailey bailey@genetics.upenn.edu |
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5 | * Revised: 24-Mar-1998 |
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6 | * |
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7 | */ |
8 | |
9 | #include "EXTERN.h" |
10 | #include "perl.h" |
11 | #include "XSUB.h" |
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12 | #include <file.h> |
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13 | #include <iodef.h> |
14 | #include <rms.h> |
15 | #include <starlet.h> |
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16 | |
17 | static bool |
18 | constant(name, pval) |
19 | char *name; |
20 | IV *pval; |
21 | { |
22 | if (strnNE(name, "O_", 2)) return FALSE; |
23 | |
24 | if (strEQ(name, "O_APPEND")) |
25 | #ifdef O_APPEND |
26 | { *pval = O_APPEND; return TRUE; } |
27 | #else |
28 | return FALSE; |
29 | #endif |
30 | if (strEQ(name, "O_CREAT")) |
31 | #ifdef O_CREAT |
32 | { *pval = O_CREAT; return TRUE; } |
33 | #else |
34 | return FALSE; |
35 | #endif |
36 | if (strEQ(name, "O_EXCL")) |
37 | #ifdef O_EXCL |
38 | { *pval = O_EXCL; return TRUE; } |
39 | #else |
40 | return FALSE; |
41 | #endif |
42 | if (strEQ(name, "O_NDELAY")) |
43 | #ifdef O_NDELAY |
44 | { *pval = O_NDELAY; return TRUE; } |
45 | #else |
46 | return FALSE; |
47 | #endif |
48 | if (strEQ(name, "O_NOWAIT")) |
49 | #ifdef O_NOWAIT |
50 | { *pval = O_NOWAIT; return TRUE; } |
51 | #else |
52 | return FALSE; |
53 | #endif |
54 | if (strEQ(name, "O_RDONLY")) |
55 | #ifdef O_RDONLY |
56 | { *pval = O_RDONLY; return TRUE; } |
57 | #else |
58 | return FALSE; |
59 | #endif |
60 | if (strEQ(name, "O_RDWR")) |
61 | #ifdef O_RDWR |
62 | { *pval = O_RDWR; return TRUE; } |
63 | #else |
64 | return FALSE; |
65 | #endif |
66 | if (strEQ(name, "O_TRUNC")) |
67 | #ifdef O_TRUNC |
68 | { *pval = O_TRUNC; return TRUE; } |
69 | #else |
70 | return FALSE; |
71 | #endif |
72 | if (strEQ(name, "O_WRONLY")) |
73 | #ifdef O_WRONLY |
74 | { *pval = O_WRONLY; return TRUE; } |
75 | #else |
76 | return FALSE; |
77 | #endif |
78 | |
79 | return FALSE; |
80 | } |
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81 | |
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82 | |
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83 | static SV * |
84 | newFH(FILE *fp, char type) { |
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85 | SV *rv; |
86 | GV **stashp, *gv = (GV *)NEWSV(0,0); |
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87 | HV *stash; |
88 | IO *io; |
89 | |
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90 | dTHR; |
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91 | /* Find stash for VMS::Stdio. We don't do this once at boot |
92 | * to allow for possibility of threaded Perl with per-thread |
93 | * symbol tables. This code (through io = ...) is really |
94 | * equivalent to gv_fetchpv("VMS::Stdio::__FH__",TRUE,SVt_PVIO), |
95 | * with a little less overhead, and good exercise for me. :-) */ |
96 | stashp = (GV **)hv_fetch(defstash,"VMS::",5,TRUE); |
97 | if (!stashp || *stashp == (GV *)&sv_undef) return Nullsv; |
98 | if (!(stash = GvHV(*stashp))) stash = GvHV(*stashp) = newHV(); |
99 | stashp = (GV **)hv_fetch(GvHV(*stashp),"Stdio::",7,TRUE); |
100 | if (!stashp || *stashp == (GV *)&sv_undef) return Nullsv; |
101 | if (!(stash = GvHV(*stashp))) stash = GvHV(*stashp) = newHV(); |
102 | |
103 | /* Set up GV to point to IO, and then take reference */ |
104 | gv_init(gv,stash,"__FH__",6,0); |
105 | io = GvIOp(gv) = newIO(); |
106 | IoIFP(io) = fp; |
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107 | if (type != '<') IoOFP(io) = fp; |
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108 | IoTYPE(io) = type; |
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109 | rv = newRV((SV *)gv); |
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110 | SvREFCNT_dec(gv); |
111 | return sv_bless(rv,stash); |
112 | } |
113 | |
114 | MODULE = VMS::Stdio PACKAGE = VMS::Stdio |
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115 | |
116 | void |
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117 | constant(name) |
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118 | char * name |
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119 | PROTOTYPE: $ |
120 | CODE: |
121 | IV i; |
122 | if (constant(name, &i)) |
123 | ST(0) = sv_2mortal(newSViv(i)); |
124 | else |
125 | ST(0) = &sv_undef; |
126 | |
127 | void |
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128 | flush(fp) |
129 | FILE * fp |
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130 | PROTOTYPE: $ |
131 | CODE: |
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132 | if (fflush(fp)) { ST(0) = &sv_undef; } |
133 | else { clearerr(fp); ST(0) = &sv_yes; } |
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134 | |
135 | char * |
136 | getname(fp) |
137 | FILE * fp |
138 | PROTOTYPE: $ |
139 | CODE: |
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140 | char fname[NAM$C_MAXRSS+1]; |
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141 | ST(0) = sv_newmortal(); |
142 | if (fgetname(fp,fname) != NULL) sv_setpv(ST(0),fname); |
143 | |
144 | void |
145 | rewind(fp) |
146 | FILE * fp |
147 | PROTOTYPE: $ |
148 | CODE: |
149 | ST(0) = rewind(fp) ? &sv_undef : &sv_yes; |
150 | |
151 | void |
152 | remove(name) |
153 | char *name |
154 | PROTOTYPE: $ |
155 | CODE: |
156 | ST(0) = remove(name) ? &sv_undef : &sv_yes; |
157 | |
158 | void |
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159 | setdef(...) |
160 | PROTOTYPE: @ |
161 | CODE: |
162 | char vmsdef[NAM$C_MAXRSS+1], es[NAM$C_MAXRSS], sep; |
163 | unsigned long int retsts; |
164 | struct FAB deffab = cc$rms_fab; |
165 | struct NAM defnam = cc$rms_nam; |
166 | struct dsc$descriptor_s dirdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; |
167 | if (items) { |
168 | SV *defsv = ST(items-1); /* mimic chdir() */ |
169 | ST(0) = &sv_undef; |
170 | if (!SvPOK(defsv)) { SETERRNO(EINVAL,LIB$_INVARG); XSRETURN(1); } |
171 | if (tovmsspec(SvPV(defsv,na),vmsdef) == NULL) { XSRETURN(1); } |
172 | deffab.fab$l_fna = vmsdef; deffab.fab$b_fns = strlen(vmsdef); |
173 | } |
174 | else { |
175 | deffab.fab$l_fna = "SYS$LOGIN"; deffab.fab$b_fns = 9; |
176 | EXTEND(sp,1); ST(0) = &sv_undef; |
177 | } |
178 | defnam.nam$l_esa = es; defnam.nam$b_ess = sizeof es; |
179 | deffab.fab$l_nam = &defnam; |
180 | retsts = sys$parse(&deffab,0,0); |
181 | if (retsts & 1) { |
182 | if (defnam.nam$v_wildcard) retsts = RMS$_WLD; |
183 | else if (defnam.nam$b_name || defnam.nam$b_type > 1 || |
184 | defnam.nam$b_ver > 1) retsts = RMS$_DIR; |
185 | } |
186 | defnam.nam$b_nop |= NAM$M_SYNCHK; defnam.nam$l_rlf = NULL; deffab.fab$b_dns = 0; |
187 | if (!(retsts & 1)) { |
188 | set_vaxc_errno(retsts); |
189 | switch (retsts) { |
190 | case RMS$_DNF: |
191 | set_errno(ENOENT); break; |
192 | case RMS$_SYN: case RMS$_DIR: case RMS$_DEV: |
193 | set_errno(EINVAL); break; |
194 | case RMS$_PRV: |
195 | set_errno(EACCES); break; |
196 | default: |
197 | set_errno(EVMSERR); break; |
198 | } |
199 | (void) sys$parse(&deffab,0,0); /* free up context */ |
200 | XSRETURN(1); |
201 | } |
202 | sep = *defnam.nam$l_dir; |
203 | *defnam.nam$l_dir = '\0'; |
204 | my_setenv("SYS$DISK",defnam.nam$b_node ? defnam.nam$l_node : defnam.nam$l_dev); |
205 | *defnam.nam$l_dir = sep; |
206 | dirdsc.dsc$a_pointer = defnam.nam$l_dir; dirdsc.dsc$w_length = defnam.nam$b_dir; |
207 | if ((retsts = sys$setddir(&dirdsc,0,0)) & 1) ST(0) = &sv_yes; |
208 | else { set_errno(EVMSERR); set_vaxc_errno(retsts); } |
209 | (void) sys$parse(&deffab,0,0); /* free up context */ |
210 | |
211 | void |
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212 | sync(fp) |
213 | FILE * fp |
214 | PROTOTYPE: $ |
215 | CODE: |
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216 | if (fsync(fileno(fp))) { ST(0) = &sv_undef; } |
217 | else { clearerr(fp); ST(0) = &sv_yes; } |
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218 | |
219 | char * |
220 | tmpnam() |
221 | PROTOTYPE: |
222 | CODE: |
223 | char fname[L_tmpnam]; |
224 | ST(0) = sv_newmortal(); |
225 | if (tmpnam(fname) != NULL) sv_setpv(ST(0),fname); |
226 | |
227 | void |
228 | vmsopen(spec,...) |
229 | char * spec |
230 | PROTOTYPE: @ |
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231 | CODE: |
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232 | char *args[8],mode[3] = {'r','\0','\0'}, type = '<'; |
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233 | register int i, myargc; |
234 | FILE *fp; |
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235 | |
236 | if (!spec || !*spec) { |
237 | SETERRNO(EINVAL,LIB$_INVARG); |
238 | XSRETURN_UNDEF; |
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239 | } |
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240 | if (items > 9) croak("too many args"); |
241 | |
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242 | /* First, set up name and mode args from perl's string */ |
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243 | if (*spec == '+') { |
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244 | mode[1] = '+'; |
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245 | spec++; |
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246 | } |
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247 | if (*spec == '>') { |
248 | if (*(spec+1) == '>') *mode = 'a', spec += 2; |
249 | else *mode = 'w', spec++; |
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250 | } |
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251 | else if (*spec == '<') spec++; |
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252 | myargc = items - 1; |
253 | for (i = 0; i < myargc; i++) args[i] = SvPV(ST(i+1),na); |
254 | /* This hack brought to you by C's opaque arglist management */ |
255 | switch (myargc) { |
256 | case 0: |
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257 | fp = fopen(spec,mode); |
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258 | break; |
259 | case 1: |
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260 | fp = fopen(spec,mode,args[0]); |
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261 | break; |
262 | case 2: |
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263 | fp = fopen(spec,mode,args[0],args[1]); |
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264 | break; |
265 | case 3: |
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266 | fp = fopen(spec,mode,args[0],args[1],args[2]); |
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267 | break; |
268 | case 4: |
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269 | fp = fopen(spec,mode,args[0],args[1],args[2],args[3]); |
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270 | break; |
271 | case 5: |
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272 | fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4]); |
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273 | break; |
274 | case 6: |
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275 | fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5]); |
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276 | break; |
277 | case 7: |
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278 | fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5],args[6]); |
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279 | break; |
280 | case 8: |
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281 | fp = fopen(spec,mode,args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]); |
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282 | break; |
283 | } |
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284 | if (fp != Nullfp) { |
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285 | SV *fh = newFH(fp,(mode[1] ? '+' : (mode[0] == 'r' ? '<' : (mode[0] == 'a' ? 'a' : '>')))); |
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286 | ST(0) = (fh ? sv_2mortal(fh) : &sv_undef); |
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287 | } |
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288 | else { ST(0) = &sv_undef; } |
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289 | |
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290 | void |
291 | vmssysopen(spec,mode,perm,...) |
292 | char * spec |
293 | int mode |
294 | int perm |
295 | PROTOTYPE: @ |
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296 | CODE: |
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297 | char *args[8]; |
298 | int i, myargc, fd; |
299 | FILE *fp; |
300 | SV *fh; |
301 | if (!spec || !*spec) { |
302 | SETERRNO(EINVAL,LIB$_INVARG); |
303 | XSRETURN_UNDEF; |
304 | } |
305 | if (items > 11) croak("too many args"); |
306 | myargc = items - 3; |
307 | for (i = 0; i < myargc; i++) args[i] = SvPV(ST(i+3),na); |
308 | /* More fun with C calls; can't combine with above because |
309 | args 2,3 of different types in fopen() and open() */ |
310 | switch (myargc) { |
311 | case 0: |
312 | fd = open(spec,mode,perm); |
313 | break; |
314 | case 1: |
315 | fd = open(spec,mode,perm,args[0]); |
316 | break; |
317 | case 2: |
318 | fd = open(spec,mode,perm,args[0],args[1]); |
319 | break; |
320 | case 3: |
321 | fd = open(spec,mode,perm,args[0],args[1],args[2]); |
322 | break; |
323 | case 4: |
324 | fd = open(spec,mode,perm,args[0],args[1],args[2],args[3]); |
325 | break; |
326 | case 5: |
327 | fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4]); |
328 | break; |
329 | case 6: |
330 | fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5]); |
331 | break; |
332 | case 7: |
333 | fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5],args[6]); |
334 | break; |
335 | case 8: |
336 | fd = open(spec,mode,perm,args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]); |
337 | break; |
338 | } |
339 | i = mode & 3; |
340 | if (fd >= 0 && |
341 | ((fp = fdopen(fd, &("r\000w\000r+"[2*i]))) != Nullfp)) { |
342 | SV *fh = newFH(fp,"<>++"[i]); |
343 | ST(0) = (fh ? sv_2mortal(fh) : &sv_undef); |
344 | } |
345 | else { ST(0) = &sv_undef; } |
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346 | |
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347 | void |
348 | waitfh(fp) |
349 | FILE * fp |
350 | PROTOTYPE: $ |
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351 | CODE: |
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352 | ST(0) = fwait(fp) ? &sv_undef : &sv_yes; |
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353 | |
354 | void |
355 | writeof(mysv) |
356 | SV * mysv |
357 | PROTOTYPE: $ |
358 | CODE: |
359 | char devnam[257], *cp; |
360 | unsigned long int chan, iosb[2], retsts, retsts2; |
361 | struct dsc$descriptor devdsc = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, devnam}; |
362 | IO *io = sv_2io(mysv); |
363 | FILE *fp = io ? IoOFP(io) : NULL; |
364 | if (fp == NULL || strchr(">was+-|",IoTYPE(io)) == Nullch) { |
365 | set_errno(EBADF); set_vaxc_errno(SS$_IVCHAN); |
366 | ST(0) = &sv_undef; XSRETURN(1); |
367 | } |
368 | if (fgetname(fp,devnam) == Nullch) { ST(0) = &sv_undef; XSRETURN(1); } |
369 | if ((cp = strrchr(devnam,':')) != NULL) *(cp+1) = '\0'; |
370 | devdsc.dsc$w_length = strlen(devnam); |
371 | retsts = sys$assign(&devdsc,&chan,0,0); |
372 | if (retsts & 1) retsts = sys$qiow(0,chan,IO$_WRITEOF,iosb,0,0,0,0,0,0,0,0); |
373 | if (retsts & 1) retsts = iosb[0]; |
374 | retsts2 = sys$dassgn(chan); /* Be sure to deassign the channel */ |
375 | if (retsts & 1) retsts = retsts2; |
376 | if (retsts & 1) { ST(0) = &sv_yes; } |
377 | else { |
378 | set_vaxc_errno(retsts); |
379 | switch (retsts) { |
380 | case SS$_EXQUOTA: case SS$_INSFMEM: case SS$_MBFULL: |
381 | case SS$_MBTOOSML: case SS$_NOIOCHAN: case SS$_NOLINKS: |
382 | case SS$_BUFFEROVF: |
383 | set_errno(ENOSPC); break; |
384 | case SS$_ILLIOFUNC: case SS$_DEVOFFLINE: case SS$_NOSUCHDEV: |
385 | set_errno(EBADF); break; |
386 | case SS$_NOPRIV: |
387 | set_errno(EACCES); break; |
388 | default: /* Includes "shouldn't happen" cases that might map */ |
389 | set_errno(EVMSERR); break; /* to other errno values */ |
390 | } |
391 | ST(0) = &sv_undef; |
392 | } |