1 /*- 2 * Copyright (c) 1980, 1991 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)err.c 5.10 (Berkeley) 06/08/91"; 10 #endif /* not lint */ 11 12 #include <sys/types.h> 13 #include <stdlib.h> 14 #include <unistd.h> 15 #if __STDC__ 16 # include <stdarg.h> 17 #else 18 # include <varargs.h> 19 #endif 20 21 #include "csh.h" 22 #include "extern.h" 23 24 char *seterr = NULL; /* Holds last error if there was one */ 25 26 #define ERR_FLAGS 0xf0000000 27 #define ERR_NAME 0x10000000 28 #define ERR_SILENT 0x20000000 29 #define ERR_OLD 0x40000000 30 31 static char *errorlist[] = 32 { 33 #define ERR_SYNTAX 0 34 "Syntax Error", 35 #define ERR_NOTALLOWED 1 36 "%s is not allowed", 37 #define ERR_WTOOLONG 2 38 "Word too long", 39 #define ERR_LTOOLONG 3 40 "$< line too long", 41 #define ERR_DOLZERO 4 42 "No file for $0", 43 #define ERR_DOLQUEST 5 44 "$? not allowed here", 45 #define ERR_INCBR 6 46 "Incomplete [] modifier", 47 #define ERR_EXPORD 7 48 "$ expansion must end before ]", 49 #define ERR_BADMOD 8 50 "Bad : modifier in $ (%c)", 51 #define ERR_SUBSCRIPT 9 52 "Subscript error", 53 #define ERR_BADNUM 10 54 "Badly formed number", 55 #define ERR_NOMORE 11 56 "No more words", 57 #define ERR_FILENAME 12 58 "Missing file name", 59 #define ERR_GLOB 13 60 "Internal glob error", 61 #define ERR_COMMAND 14 62 "Command not found", 63 #define ERR_TOOFEW 15 64 "Too few arguments", 65 #define ERR_TOOMANY 16 66 "Too many arguments", 67 #define ERR_DANGER 17 68 "Too dangerous to alias that", 69 #define ERR_EMPTYIF 18 70 "Empty if", 71 #define ERR_IMPRTHEN 19 72 "Improper then", 73 #define ERR_NOPAREN 20 74 "Words not parenthesized", 75 #define ERR_NOTFOUND 21 76 "%s not found", 77 #define ERR_MASK 22 78 "Improper mask", 79 #define ERR_LIMIT 23 80 "No such limit", 81 #define ERR_TOOLARGE 24 82 "Argument too large", 83 #define ERR_SCALEF 25 84 "Improper or unknown scale factor", 85 #define ERR_UNDVAR 26 86 "Undefined variable", 87 #define ERR_DEEP 27 88 "Directory stack not that deep", 89 #define ERR_BADSIG 28 90 "Bad signal number", 91 #define ERR_UNKSIG 29 92 "Unknown signal; kill -l lists signals", 93 #define ERR_VARBEGIN 30 94 "Variable name must begin with a letter", 95 #define ERR_VARTOOLONG 31 96 "Variable name too long", 97 #define ERR_VARALNUM 32 98 "Variable name must contain alphanumeric characters", 99 #define ERR_JOBCONTROL 33 100 "No job control in this shell", 101 #define ERR_EXPRESSION 34 102 "Expression Syntax", 103 #define ERR_NOHOMEDIR 35 104 "No home directory", 105 #define ERR_CANTCHANGE 36 106 "Can't change to home directory", 107 #define ERR_NULLCOM 37 108 "Invalid null command", 109 #define ERR_ASSIGN 38 110 "Assignment missing expression", 111 #define ERR_UNKNOWNOP 39 112 "Unknown operator", 113 #define ERR_AMBIG 40 114 "Ambiguous", 115 #define ERR_EXISTS 41 116 "%s: File exists", 117 #define ERR_INTR 42 118 "Interrupted", 119 #define ERR_RANGE 43 120 "Subscript out of range", 121 #define ERR_OVERFLOW 44 122 "Line overflow", 123 #define ERR_VARMOD 45 124 "Unknown variable modifier", 125 #define ERR_NOSUCHJOB 46 126 "No such job", 127 #define ERR_TERMINAL 47 128 "Can't from terminal", 129 #define ERR_NOTWHILE 48 130 "Not in while/foreach", 131 #define ERR_NOPROC 49 132 "No more processes", 133 #define ERR_NOMATCH 50 134 "No match", 135 #define ERR_MISSING 51 136 "Missing %c", 137 #define ERR_UNMATCHED 52 138 "Unmatched %c", 139 #define ERR_NOMEM 53 140 "Out of memory", 141 #define ERR_PIPE 54 142 "Can't make pipe", 143 #define ERR_SYSTEM 55 144 "%s: %s", 145 #define ERR_STRING 56 146 "%s", 147 #define ERR_JOBS 57 148 "Usage: jobs [ -l ]", 149 #define ERR_JOBARGS 58 150 "Arguments should be jobs or process id's", 151 #define ERR_JOBCUR 59 152 "No current job", 153 #define ERR_JOBPREV 60 154 "No previous job", 155 #define ERR_JOBPAT 61 156 "No job matches pattern", 157 #define ERR_NESTING 62 158 "Fork nesting > %d; maybe `...` loop", 159 #define ERR_JOBCTRLSUB 63 160 "No job control in subshells", 161 #define ERR_BADPLPS 64 162 "Badly placed ()'s", 163 #define ERR_STOPPED 65 164 "%sThere are suspended jobs", 165 #define ERR_NODIR 66 166 "No other directory", 167 #define ERR_EMPTY 67 168 "Directory stack empty", 169 #define ERR_BADDIR 68 170 "Bad directory", 171 #define ERR_DIRUS 69 172 "Usage: %s [-lvn]%s", 173 #define ERR_HFLAG 70 174 "No operand for -h flag", 175 #define ERR_NOTLOGIN 71 176 "Not a login shell", 177 #define ERR_DIV0 72 178 "Division by 0", 179 #define ERR_MOD0 73 180 "Mod by 0", 181 #define ERR_BADSCALE 74 182 "Bad scaling; did you mean \"%s\"?", 183 #define ERR_SUSPLOG 75 184 "Can't suspend a login shell (yet)", 185 #define ERR_UNKUSER 76 186 "Unknown user: %s", 187 #define ERR_NOHOME 77 188 "No $home variable set", 189 #define ERR_HISTUS 78 190 "Usage: history [-rht] [# number of events]", 191 #define ERR_SPDOLLT 79 192 "$ or < not allowed with $# or $?", 193 #define ERR_NEWLINE 80 194 "Newline in variable name", 195 #define ERR_SPSTAR 81 196 "* not allowed with $# or $?", 197 #define ERR_DIGIT 82 198 "$?<digit> or $#<digit> not allowed", 199 #define ERR_VARILL 83 200 "Illegal variable name", 201 #define ERR_NLINDEX 84 202 "Newline in variable index", 203 #define ERR_EXPOVFL 85 204 "Expansion buffer overflow", 205 #define ERR_VARSYN 86 206 "Variable syntax", 207 #define ERR_BADBANG 87 208 "Bad ! form", 209 #define ERR_NOSUBST 88 210 "No previous substitute", 211 #define ERR_BADSUBST 89 212 "Bad substitute", 213 #define ERR_LHS 90 214 "No previous left hand side", 215 #define ERR_RHSLONG 91 216 "Right hand side too long", 217 #define ERR_BADBANGMOD 92 218 "Bad ! modifier: %c", 219 #define ERR_MODFAIL 93 220 "Modifier failed", 221 #define ERR_SUBOVFL 94 222 "Substitution buffer overflow", 223 #define ERR_BADBANGARG 95 224 "Bad ! arg selector", 225 #define ERR_NOSEARCH 96 226 "No prev search", 227 #define ERR_NOEVENT 97 228 "%s: Event not found", 229 #define ERR_TOOMANYRP 98 230 "Too many )'s", 231 #define ERR_TOOMANYLP 99 232 "Too many ('s", 233 #define ERR_BADPLP 100 234 "Badly placed (", 235 #define ERR_MISRED 101 236 "Missing name for redirect", 237 #define ERR_OUTRED 102 238 "Ambiguous output redirect", 239 #define ERR_REDPAR 103 240 "Can't << within ()'s", 241 #define ERR_INRED 104 242 "Ambiguous input redirect", 243 #define ERR_ALIASLOOP 105 244 "Alias loop", 245 #define ERR_HISTLOOP 106 246 "!# History loop", 247 #define ERR_ARCH 107 248 "%s: %s. Wrong Architecture", 249 #define ERR_FILEINQ 108 250 "Malformed file inquiry", 251 #define ERR_SELOVFL 109 252 "Selector overflow", 253 #define ERR_INVALID 110 254 "Invalid Error" 255 }; 256 257 /* 258 * The parser and scanner set up errors for later by calling seterr, 259 * which sets the variable err as a side effect; later to be tested, 260 * e.g. in process. 261 */ 262 void 263 #if __STDC__ 264 seterror(int id, ...) 265 #else 266 seterror(id, va_alist) 267 int id; 268 va_dcl 269 #endif 270 { 271 if (seterr == 0) { 272 char berr[BUFSIZ]; 273 va_list va; 274 275 #if __STDC__ 276 va_start(va, id); 277 #else 278 va_start(va); 279 #endif 280 if (id < 0 || id > sizeof(errorlist) / sizeof(errorlist[0])) 281 id = ERR_INVALID; 282 xvsprintf(berr, errorlist[id], va); 283 va_end(va); 284 285 seterr = strsave(berr); 286 } 287 } 288 289 /* 290 * Print the error with the given id. 291 * 292 * Special ids: 293 * ERR_SILENT: Print nothing. 294 * ERR_OLD: Print the previously set error if one was there. 295 * otherwise return. 296 * ERR_NAME: If this bit is set, print the name of the function 297 * in bname 298 * 299 * This routine always resets or exits. The flag haderr 300 * is set so the routine who catches the unwind can propogate 301 * it if they want. 302 * 303 * Note that any open files at the point of error will eventually 304 * be closed in the routine process in sh.c which is the only 305 * place error unwinds are ever caught. 306 */ 307 void 308 #if __STDC__ 309 stderror(int id, ...) 310 #else 311 stderror(id, va_alist) 312 int id; 313 va_dcl 314 #endif 315 { 316 va_list va; 317 register Char **v; 318 int flags = id & ERR_FLAGS; 319 320 id &= ~ERR_FLAGS; 321 322 if ((flags & ERR_OLD) && seterr == NULL) 323 return; 324 325 if (id < 0 || id > sizeof(errorlist) / sizeof(errorlist[0])) 326 id = ERR_INVALID; 327 328 /* 329 * Must flush before we print as we wish output before the error to go on 330 * (some form of) standard output, while output after goes on (some form 331 * of) diagnostic output. If didfds then output will go to 1/2 else to 332 * FSHOUT/FSHDIAG. See flush in sh.print.c. 333 */ 334 flush(); 335 haderr = 1; /* Now to diagnostic output */ 336 timflg = 0; /* This isn't otherwise reset */ 337 338 339 if (!(flags & ERR_SILENT)) { 340 if (flags & ERR_NAME) 341 xprintf("%s: ", bname); 342 if ((flags & ERR_OLD)) 343 /* Old error. */ 344 xprintf("%s.\n", seterr); 345 else { 346 #if __STDC__ 347 va_start(va, id); 348 #else 349 va_start(va); 350 #endif 351 xvprintf(errorlist[id], va); 352 va_end(va); 353 xprintf(".\n"); 354 } 355 } 356 357 if (seterr) { 358 xfree((ptr_t) seterr); 359 seterr = NULL; 360 } 361 362 if (v = pargv) 363 pargv = 0, blkfree(v); 364 if (v = gargv) 365 gargv = 0, blkfree(v); 366 367 didfds = 0; /* Forget about 0,1,2 */ 368 /* 369 * Go away if -e or we are a child shell 370 */ 371 if (exiterr || child) 372 xexit(1); 373 374 /* 375 * Reset the state of the input. This buffered seek to end of file will 376 * also clear the while/foreach stack. 377 */ 378 btoeof(); 379 380 set(STRstatus, Strsave(STR1)); 381 if (tpgrp > 0) 382 (void) tcsetpgrp(FSHTTY, tpgrp); 383 reset(); /* Unwind */ 384 } 385