1 /* $NetBSD: err.c,v 1.16 2002/05/25 23:29:16 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 1.16 2002/05/25 23:29:16 wiz Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 47 #include <stdarg.h> 48 #include <stdlib.h> 49 #include <unistd.h> 50 51 #include "csh.h" 52 #include "extern.h" 53 54 char *seterr = NULL; /* Holds last error if there was one */ 55 56 #define ERR_FLAGS 0xf0000000 57 #define ERR_NAME 0x10000000 58 #define ERR_SILENT 0x20000000 59 #define ERR_OLD 0x40000000 60 61 static const char *errorlist[] = 62 { 63 #define ERR_SYNTAX 0 64 "Syntax Error", 65 #define ERR_NOTALLOWED 1 66 "%s is not allowed", 67 #define ERR_WTOOLONG 2 68 "Word too long", 69 #define ERR_LTOOLONG 3 70 "$< line too long", 71 #define ERR_DOLZERO 4 72 "No file for $0", 73 #define ERR_DOLQUEST 5 74 "$? not allowed here", 75 #define ERR_INCBR 6 76 "Incomplete [] modifier", 77 #define ERR_EXPORD 7 78 "$ expansion must end before ]", 79 #define ERR_BADMOD 8 80 "Bad : modifier in $ (%c)", 81 #define ERR_SUBSCRIPT 9 82 "Subscript error", 83 #define ERR_BADNUM 10 84 "Badly formed number", 85 #define ERR_NOMORE 11 86 "No more words", 87 #define ERR_FILENAME 12 88 "Missing file name", 89 #define ERR_GLOB 13 90 "Internal glob error", 91 #define ERR_COMMAND 14 92 "Command not found", 93 #define ERR_TOOFEW 15 94 "Too few arguments", 95 #define ERR_TOOMANY 16 96 "Too many arguments", 97 #define ERR_DANGER 17 98 "Too dangerous to alias that", 99 #define ERR_EMPTYIF 18 100 "Empty if", 101 #define ERR_IMPRTHEN 19 102 "Improper then", 103 #define ERR_NOPAREN 20 104 "Words not parenthesized", 105 #define ERR_NOTFOUND 21 106 "%s not found", 107 #define ERR_MASK 22 108 "Improper mask", 109 #define ERR_LIMIT 23 110 "No such limit", 111 #define ERR_TOOLARGE 24 112 "Argument too large", 113 #define ERR_SCALEF 25 114 "Improper or unknown scale factor", 115 #define ERR_UNDVAR 26 116 "Undefined variable", 117 #define ERR_DEEP 27 118 "Directory stack not that deep", 119 #define ERR_BADSIG 28 120 "Bad signal number", 121 #define ERR_UNKSIG 29 122 "Unknown signal; kill -l lists signals", 123 #define ERR_VARBEGIN 30 124 "Variable name must begin with a letter", 125 #define ERR_VARTOOLONG 31 126 "Variable name too long", 127 #define ERR_VARALNUM 32 128 "Variable name must contain alphanumeric characters", 129 #define ERR_JOBCONTROL 33 130 "No job control in this shell", 131 #define ERR_EXPRESSION 34 132 "Expression Syntax", 133 #define ERR_NOHOMEDIR 35 134 "No home directory", 135 #define ERR_CANTCHANGE 36 136 "Can't change to home directory", 137 #define ERR_NULLCOM 37 138 "Invalid null command", 139 #define ERR_ASSIGN 38 140 "Assignment missing expression", 141 #define ERR_UNKNOWNOP 39 142 "Unknown operator", 143 #define ERR_AMBIG 40 144 "Ambiguous", 145 #define ERR_EXISTS 41 146 "%s: File exists", 147 #define ERR_INTR 42 148 "Interrupted", 149 #define ERR_RANGE 43 150 "Subscript out of range", 151 #define ERR_OVERFLOW 44 152 "Line overflow", 153 #define ERR_VARMOD 45 154 "Unknown variable modifier", 155 #define ERR_NOSUCHJOB 46 156 "No such job", 157 #define ERR_TERMINAL 47 158 "Can't from terminal", 159 #define ERR_NOTWHILE 48 160 "Not in while/foreach", 161 #define ERR_NOPROC 49 162 "No more processes", 163 #define ERR_NOMATCH 50 164 "No match", 165 #define ERR_MISSING 51 166 "Missing %c", 167 #define ERR_UNMATCHED 52 168 "Unmatched %c", 169 #define ERR_NOMEM 53 170 "Out of memory", 171 #define ERR_PIPE 54 172 "Can't make pipe", 173 #define ERR_SYSTEM 55 174 "%s: %s", 175 #define ERR_STRING 56 176 "%s", 177 #define ERR_JOBS 57 178 "Usage: jobs [ -l ]", 179 #define ERR_JOBARGS 58 180 "Arguments should be jobs or process id's", 181 #define ERR_JOBCUR 59 182 "No current job", 183 #define ERR_JOBPREV 60 184 "No previous job", 185 #define ERR_JOBPAT 61 186 "No job matches pattern", 187 #define ERR_NESTING 62 188 "Fork nesting > %d; maybe `...` loop", 189 #define ERR_JOBCTRLSUB 63 190 "No job control in subshells", 191 #define ERR_BADPLPS 64 192 "Badly placed ()'s", 193 #define ERR_STOPPED 65 194 "%sThere are suspended jobs", 195 #define ERR_NODIR 66 196 "No other directory", 197 #define ERR_EMPTY 67 198 "Directory stack empty", 199 #define ERR_BADDIR 68 200 "Bad directory", 201 #define ERR_DIRUS 69 202 "Usage: %s [-lvn]%s", 203 #define ERR_HFLAG 70 204 "No operand for -h flag", 205 #define ERR_NOTLOGIN 71 206 "Not a login shell", 207 #define ERR_DIV0 72 208 "Division by 0", 209 #define ERR_MOD0 73 210 "Mod by 0", 211 #define ERR_BADSCALE 74 212 "Bad scaling; did you mean \"%s\"?", 213 #define ERR_SUSPLOG 75 214 "Can't suspend a login shell (yet)", 215 #define ERR_UNKUSER 76 216 "Unknown user: %s", 217 #define ERR_NOHOME 77 218 "No $home variable set", 219 #define ERR_HISTUS 78 220 "Usage: history [-rh] [# number of events]", 221 #define ERR_SPDOLLT 79 222 "$, ! or < not allowed with $# or $?", 223 #define ERR_NEWLINE 80 224 "Newline in variable name", 225 #define ERR_SPSTAR 81 226 "* not allowed with $# or $?", 227 #define ERR_DIGIT 82 228 "$?<digit> or $#<digit> not allowed", 229 #define ERR_VARILL 83 230 "Illegal variable name", 231 #define ERR_NLINDEX 84 232 "Newline in variable index", 233 #define ERR_EXPOVFL 85 234 "Expansion buffer overflow", 235 #define ERR_VARSYN 86 236 "Variable syntax", 237 #define ERR_BADBANG 87 238 "Bad ! form", 239 #define ERR_NOSUBST 88 240 "No previous substitute", 241 #define ERR_BADSUBST 89 242 "Bad substitute", 243 #define ERR_LHS 90 244 "No previous left hand side", 245 #define ERR_RHSLONG 91 246 "Right hand side too long", 247 #define ERR_BADBANGMOD 92 248 "Bad ! modifier: %c", 249 #define ERR_MODFAIL 93 250 "Modifier failed", 251 #define ERR_SUBOVFL 94 252 "Substitution buffer overflow", 253 #define ERR_BADBANGARG 95 254 "Bad ! arg selector", 255 #define ERR_NOSEARCH 96 256 "No prev search", 257 #define ERR_NOEVENT 97 258 "%s: Event not found", 259 #define ERR_TOOMANYRP 98 260 "Too many )'s", 261 #define ERR_TOOMANYLP 99 262 "Too many ('s", 263 #define ERR_BADPLP 100 264 "Badly placed (", 265 #define ERR_MISRED 101 266 "Missing name for redirect", 267 #define ERR_OUTRED 102 268 "Ambiguous output redirect", 269 #define ERR_REDPAR 103 270 "Can't << within ()'s", 271 #define ERR_INRED 104 272 "Ambiguous input redirect", 273 #define ERR_ALIASLOOP 105 274 "Alias loop", 275 #define ERR_HISTLOOP 106 276 "!# History loop", 277 #define ERR_ARCH 107 278 "%s: %s. Wrong Architecture", 279 #define ERR_FILEINQ 108 280 "Malformed file inquiry", 281 #define ERR_SELOVFL 109 282 "Selector overflow", 283 #define ERR_INVALID 110 284 "Invalid Error" 285 }; 286 287 /* 288 * The parser and scanner set up errors for later by calling seterr, 289 * which sets the variable err as a side effect; later to be tested, 290 * e.g. in process. 291 */ 292 void 293 seterror(int id, ...) 294 { 295 if (seterr == 0) { 296 char berr[BUFSIZE]; 297 va_list va; 298 299 va_start(va, id); 300 if (id < 0 || id > sizeof(errorlist) / sizeof(errorlist[0])) 301 id = ERR_INVALID; 302 (void)vsnprintf(berr, sizeof(berr), errorlist[id], va); 303 va_end(va); 304 305 seterr = strsave(berr); 306 } 307 } 308 309 /* 310 * Print the error with the given id. 311 * 312 * Special ids: 313 * ERR_SILENT: Print nothing. 314 * ERR_OLD: Print the previously set error if one was there. 315 * otherwise return. 316 * ERR_NAME: If this bit is set, print the name of the function 317 * in bname 318 * 319 * This routine always resets or exits. The flag haderr 320 * is set so the routine who catches the unwind can propogate 321 * it if they want. 322 * 323 * Note that any open files at the point of error will eventually 324 * be closed in the routine process in sh.c which is the only 325 * place error unwinds are ever caught. 326 */ 327 void 328 stderror(int id, ...) 329 { 330 va_list va; 331 Char **v; 332 int flags; 333 334 flags = id & ERR_FLAGS; 335 id &= ~ERR_FLAGS; 336 337 if ((flags & ERR_OLD) && seterr == NULL) 338 abort(); 339 340 if (id < 0 || id > sizeof(errorlist) / sizeof(errorlist[0])) 341 id = ERR_INVALID; 342 343 (void)fflush(cshout); 344 (void)fflush(csherr); 345 haderr = 1; /* Now to diagnostic output */ 346 timflg = 0; /* This isn't otherwise reset */ 347 348 349 if (!(flags & ERR_SILENT)) { 350 if (flags & ERR_NAME) 351 (void)fprintf(csherr, "%s: ", bname); 352 if ((flags & ERR_OLD)) 353 /* Old error. */ 354 (void)fprintf(csherr, "%s.\n", seterr); 355 else { 356 va_start(va, id); 357 (void)vfprintf(csherr, errorlist[id], va); 358 va_end(va); 359 (void)fprintf(csherr, ".\n"); 360 } 361 } 362 363 if (seterr) { 364 xfree((ptr_t) seterr); 365 seterr = NULL; 366 } 367 368 if ((v = pargv) != NULL) 369 pargv = 0, blkfree(v); 370 if ((v = gargv) != NULL) 371 gargv = 0, blkfree(v); 372 373 (void)fflush(cshout); 374 (void)fflush(csherr); 375 didfds = 0; /* Forget about 0,1,2 */ 376 /* 377 * Go away if -e or we are a child shell 378 */ 379 if (exiterr || child) 380 xexit(1); 381 382 /* 383 * Reset the state of the input. This buffered seek to end of file will 384 * also clear the while/foreach stack. 385 */ 386 btoeof(); 387 388 set(STRstatus, Strsave(STR1)); 389 if (tpgrp > 0) 390 (void)tcsetpgrp(FSHTTY, tpgrp); 391 reset(); /* Unwind */ 392 } 393