err.c revision 1.15
1 /* $NetBSD: err.c,v 1.15 2001/09/14 14:04:00 wiz Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)err.c 8.1 (Berkeley) 5/31/93"; 40 #else 41 __RCSID("$NetBSD: err.c,v 1.15 2001/09/14 14:04:00 wiz Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 47 #include <stdlib.h> 48 #include <unistd.h> 49 50 #if __STDC__ 51 # include <stdarg.h> 52 #else 53 # include <varargs.h> 54 #endif 55 56 #include "csh.h" 57 #include "extern.h" 58 59 char *seterr = NULL; /* Holds last error if there was one */ 60 61 #define ERR_FLAGS 0xf0000000 62 #define ERR_NAME 0x10000000 63 #define ERR_SILENT 0x20000000 64 #define ERR_OLD 0x40000000 65 66 static const char *errorlist[] = 67 { 68 #define ERR_SYNTAX 0 69 "Syntax Error", 70 #define ERR_NOTALLOWED 1 71 "%s is not allowed", 72 #define ERR_WTOOLONG 2 73 "Word too long", 74 #define ERR_LTOOLONG 3 75 "$< line too long", 76 #define ERR_DOLZERO 4 77 "No file for $0", 78 #define ERR_DOLQUEST 5 79 "$? not allowed here", 80 #define ERR_INCBR 6 81 "Incomplete [] modifier", 82 #define ERR_EXPORD 7 83 "$ expansion must end before ]", 84 #define ERR_BADMOD 8 85 "Bad : modifier in $ (%c)", 86 #define ERR_SUBSCRIPT 9 87 "Subscript error", 88 #define ERR_BADNUM 10 89 "Badly formed number", 90 #define ERR_NOMORE 11 91 "No more words", 92 #define ERR_FILENAME 12 93 "Missing file name", 94 #define ERR_GLOB 13 95 "Internal glob error", 96 #define ERR_COMMAND 14 97 "Command not found", 98 #define ERR_TOOFEW 15 99 "Too few arguments", 100 #define ERR_TOOMANY 16 101 "Too many arguments", 102 #define ERR_DANGER 17 103 "Too dangerous to alias that", 104 #define ERR_EMPTYIF 18 105 "Empty if", 106 #define ERR_IMPRTHEN 19 107 "Improper then", 108 #define ERR_NOPAREN 20 109 "Words not parenthesized", 110 #define ERR_NOTFOUND 21 111 "%s not found", 112 #define ERR_MASK 22 113 "Improper mask", 114 #define ERR_LIMIT 23 115 "No such limit", 116 #define ERR_TOOLARGE 24 117 "Argument too large", 118 #define ERR_SCALEF 25 119 "Improper or unknown scale factor", 120 #define ERR_UNDVAR 26 121 "Undefined variable", 122 #define ERR_DEEP 27 123 "Directory stack not that deep", 124 #define ERR_BADSIG 28 125 "Bad signal number", 126 #define ERR_UNKSIG 29 127 "Unknown signal; kill -l lists signals", 128 #define ERR_VARBEGIN 30 129 "Variable name must begin with a letter", 130 #define ERR_VARTOOLONG 31 131 "Variable name too long", 132 #define ERR_VARALNUM 32 133 "Variable name must contain alphanumeric characters", 134 #define ERR_JOBCONTROL 33 135 "No job control in this shell", 136 #define ERR_EXPRESSION 34 137 "Expression Syntax", 138 #define ERR_NOHOMEDIR 35 139 "No home directory", 140 #define ERR_CANTCHANGE 36 141 "Can't change to home directory", 142 #define ERR_NULLCOM 37 143 "Invalid null command", 144 #define ERR_ASSIGN 38 145 "Assignment missing expression", 146 #define ERR_UNKNOWNOP 39 147 "Unknown operator", 148 #define ERR_AMBIG 40 149 "Ambiguous", 150 #define ERR_EXISTS 41 151 "%s: File exists", 152 #define ERR_INTR 42 153 "Interrupted", 154 #define ERR_RANGE 43 155 "Subscript out of range", 156 #define ERR_OVERFLOW 44 157 "Line overflow", 158 #define ERR_VARMOD 45 159 "Unknown variable modifier", 160 #define ERR_NOSUCHJOB 46 161 "No such job", 162 #define ERR_TERMINAL 47 163 "Can't from terminal", 164 #define ERR_NOTWHILE 48 165 "Not in while/foreach", 166 #define ERR_NOPROC 49 167 "No more processes", 168 #define ERR_NOMATCH 50 169 "No match", 170 #define ERR_MISSING 51 171 "Missing %c", 172 #define ERR_UNMATCHED 52 173 "Unmatched %c", 174 #define ERR_NOMEM 53 175 "Out of memory", 176 #define ERR_PIPE 54 177 "Can't make pipe", 178 #define ERR_SYSTEM 55 179 "%s: %s", 180 #define ERR_STRING 56 181 "%s", 182 #define ERR_JOBS 57 183 "Usage: jobs [ -l ]", 184 #define ERR_JOBARGS 58 185 "Arguments should be jobs or process id's", 186 #define ERR_JOBCUR 59 187 "No current job", 188 #define ERR_JOBPREV 60 189 "No previous job", 190 #define ERR_JOBPAT 61 191 "No job matches pattern", 192 #define ERR_NESTING 62 193 "Fork nesting > %d; maybe `...` loop", 194 #define ERR_JOBCTRLSUB 63 195 "No job control in subshells", 196 #define ERR_BADPLPS 64 197 "Badly placed ()'s", 198 #define ERR_STOPPED 65 199 "%sThere are suspended jobs", 200 #define ERR_NODIR 66 201 "No other directory", 202 #define ERR_EMPTY 67 203 "Directory stack empty", 204 #define ERR_BADDIR 68 205 "Bad directory", 206 #define ERR_DIRUS 69 207 "Usage: %s [-lvn]%s", 208 #define ERR_HFLAG 70 209 "No operand for -h flag", 210 #define ERR_NOTLOGIN 71 211 "Not a login shell", 212 #define ERR_DIV0 72 213 "Division by 0", 214 #define ERR_MOD0 73 215 "Mod by 0", 216 #define ERR_BADSCALE 74 217 "Bad scaling; did you mean \"%s\"?", 218 #define ERR_SUSPLOG 75 219 "Can't suspend a login shell (yet)", 220 #define ERR_UNKUSER 76 221 "Unknown user: %s", 222 #define ERR_NOHOME 77 223 "No $home variable set", 224 #define ERR_HISTUS 78 225 "Usage: history [-rh] [# number of events]", 226 #define ERR_SPDOLLT 79 227 "$, ! or < not allowed with $# or $?", 228 #define ERR_NEWLINE 80 229 "Newline in variable name", 230 #define ERR_SPSTAR 81 231 "* not allowed with $# or $?", 232 #define ERR_DIGIT 82 233 "$?<digit> or $#<digit> not allowed", 234 #define ERR_VARILL 83 235 "Illegal variable name", 236 #define ERR_NLINDEX 84 237 "Newline in variable index", 238 #define ERR_EXPOVFL 85 239 "Expansion buffer overflow", 240 #define ERR_VARSYN 86 241 "Variable syntax", 242 #define ERR_BADBANG 87 243 "Bad ! form", 244 #define ERR_NOSUBST 88 245 "No previous substitute", 246 #define ERR_BADSUBST 89 247 "Bad substitute", 248 #define ERR_LHS 90 249 "No previous left hand side", 250 #define ERR_RHSLONG 91 251 "Right hand side too long", 252 #define ERR_BADBANGMOD 92 253 "Bad ! modifier: %c", 254 #define ERR_MODFAIL 93 255 "Modifier failed", 256 #define ERR_SUBOVFL 94 257 "Substitution buffer overflow", 258 #define ERR_BADBANGARG 95 259 "Bad ! arg selector", 260 #define ERR_NOSEARCH 96 261 "No prev search", 262 #define ERR_NOEVENT 97 263 "%s: Event not found", 264 #define ERR_TOOMANYRP 98 265 "Too many )'s", 266 #define ERR_TOOMANYLP 99 267 "Too many ('s", 268 #define ERR_BADPLP 100 269 "Badly placed (", 270 #define ERR_MISRED 101 271 "Missing name for redirect", 272 #define ERR_OUTRED 102 273 "Ambiguous output redirect", 274 #define ERR_REDPAR 103 275 "Can't << within ()'s", 276 #define ERR_INRED 104 277 "Ambiguous input redirect", 278 #define ERR_ALIASLOOP 105 279 "Alias loop", 280 #define ERR_HISTLOOP 106 281 "!# History loop", 282 #define ERR_ARCH 107 283 "%s: %s. Wrong Architecture", 284 #define ERR_FILEINQ 108 285 "Malformed file inquiry", 286 #define ERR_SELOVFL 109 287 "Selector overflow", 288 #define ERR_INVALID 110 289 "Invalid Error" 290 }; 291 292 /* 293 * The parser and scanner set up errors for later by calling seterr, 294 * which sets the variable err as a side effect; later to be tested, 295 * e.g. in process. 296 */ 297 void 298 #if __STDC__ 299 seterror(int id, ...) 300 #else 301 seterror(id, va_alist) 302 int id; 303 va_dcl 304 #endif 305 { 306 if (seterr == 0) { 307 char berr[BUFSIZE]; 308 va_list va; 309 310 #if __STDC__ 311 va_start(va, id); 312 #else 313 va_start(va); 314 #endif 315 if (id < 0 || id > sizeof(errorlist) / sizeof(errorlist[0])) 316 id = ERR_INVALID; 317 (void)vsnprintf(berr, sizeof(berr), errorlist[id], va); 318 va_end(va); 319 320 seterr = strsave(berr); 321 } 322 } 323 324 /* 325 * Print the error with the given id. 326 * 327 * Special ids: 328 * ERR_SILENT: Print nothing. 329 * ERR_OLD: Print the previously set error if one was there. 330 * otherwise return. 331 * ERR_NAME: If this bit is set, print the name of the function 332 * in bname 333 * 334 * This routine always resets or exits. The flag haderr 335 * is set so the routine who catches the unwind can propogate 336 * it if they want. 337 * 338 * Note that any open files at the point of error will eventually 339 * be closed in the routine process in sh.c which is the only 340 * place error unwinds are ever caught. 341 */ 342 void 343 #if __STDC__ 344 stderror(int id, ...) 345 #else 346 stderror(id, va_alist) 347 int id; 348 va_dcl 349 #endif 350 { 351 va_list va; 352 Char **v; 353 int flags; 354 355 flags = id & ERR_FLAGS; 356 id &= ~ERR_FLAGS; 357 358 if ((flags & ERR_OLD) && seterr == NULL) 359 abort(); 360 361 if (id < 0 || id > sizeof(errorlist) / sizeof(errorlist[0])) 362 id = ERR_INVALID; 363 364 (void)fflush(cshout); 365 (void)fflush(csherr); 366 haderr = 1; /* Now to diagnostic output */ 367 timflg = 0; /* This isn't otherwise reset */ 368 369 370 if (!(flags & ERR_SILENT)) { 371 if (flags & ERR_NAME) 372 (void)fprintf(csherr, "%s: ", bname); 373 if ((flags & ERR_OLD)) 374 /* Old error. */ 375 (void)fprintf(csherr, "%s.\n", seterr); 376 else { 377 #if __STDC__ 378 va_start(va, id); 379 #else 380 va_start(va); 381 #endif 382 (void)vfprintf(csherr, errorlist[id], va); 383 va_end(va); 384 (void)fprintf(csherr, ".\n"); 385 } 386 } 387 388 if (seterr) { 389 xfree((ptr_t) seterr); 390 seterr = NULL; 391 } 392 393 if ((v = pargv) != NULL) 394 pargv = 0, blkfree(v); 395 if ((v = gargv) != NULL) 396 gargv = 0, blkfree(v); 397 398 (void)fflush(cshout); 399 (void)fflush(csherr); 400 didfds = 0; /* Forget about 0,1,2 */ 401 /* 402 * Go away if -e or we are a child shell 403 */ 404 if (exiterr || child) 405 xexit(1); 406 407 /* 408 * Reset the state of the input. This buffered seek to end of file will 409 * also clear the while/foreach stack. 410 */ 411 btoeof(); 412 413 set(STRstatus, Strsave(STR1)); 414 if (tpgrp > 0) 415 (void)tcsetpgrp(FSHTTY, tpgrp); 416 reset(); /* Unwind */ 417 } 418
Indexes created Tue Sep 30 10:09:55 GMT 2025