389 lines
10 KiB
C
389 lines
10 KiB
C
/* $NetBSD: err.c,v 1.21 2013/07/16 17:47:43 christos Exp $ */
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/*-
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* Copyright (c) 1980, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)err.c 8.1 (Berkeley) 5/31/93";
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#else
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__RCSID("$NetBSD: err.c,v 1.21 2013/07/16 17:47:43 christos Exp $");
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#endif
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#endif /* not lint */
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#include <sys/types.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "csh.h"
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#include "extern.h"
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char *seterr = NULL; /* Holds last error if there was one */
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#define ERR_FLAGS ((int)0xf0000000)
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#define ERR_NAME 0x10000000
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#define ERR_SILENT 0x20000000
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#define ERR_OLD 0x40000000
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static const char *errorlist[] =
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{
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#define ERR_SYNTAX 0
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"Syntax Error",
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#define ERR_NOTALLOWED 1
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"%s is not allowed",
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#define ERR_WTOOLONG 2
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"Word too long",
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#define ERR_LTOOLONG 3
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"$< line too long",
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#define ERR_DOLZERO 4
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"No file for $0",
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#define ERR_DOLQUEST 5
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"$? not allowed here",
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#define ERR_INCBR 6
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"Incomplete [] modifier",
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#define ERR_EXPORD 7
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"$ expansion must end before ]",
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#define ERR_BADMOD 8
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"Bad : modifier in $ (%c)",
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#define ERR_SUBSCRIPT 9
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"Subscript error",
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#define ERR_BADNUM 10
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"Badly formed number",
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#define ERR_NOMORE 11
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"No more words",
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#define ERR_FILENAME 12
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"Missing file name",
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#define ERR_GLOB 13
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"Internal glob error",
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#define ERR_COMMAND 14
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"Command not found",
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#define ERR_TOOFEW 15
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"Too few arguments",
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#define ERR_TOOMANY 16
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"Too many arguments",
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#define ERR_DANGER 17
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"Too dangerous to alias that",
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#define ERR_EMPTYIF 18
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"Empty if",
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#define ERR_IMPRTHEN 19
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"Improper then",
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#define ERR_NOPAREN 20
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"Words not parenthesized",
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#define ERR_NOTFOUND 21
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"%s not found",
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#define ERR_MASK 22
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"Improper mask",
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#define ERR_LIMIT 23
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"No such limit",
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#define ERR_TOOLARGE 24
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"Argument too large",
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#define ERR_SCALEF 25
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"Improper or unknown scale factor",
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#define ERR_UNDVAR 26
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"Undefined variable",
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#define ERR_DEEP 27
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"Directory stack not that deep",
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#define ERR_BADSIG 28
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"Bad signal number",
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#define ERR_UNKSIG 29
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"Unknown signal; kill -l lists signals",
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#define ERR_VARBEGIN 30
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"Variable name must begin with a letter",
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#define ERR_VARTOOLONG 31
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"Variable name too long",
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#define ERR_VARALNUM 32
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"Variable name must contain alphanumeric characters",
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#define ERR_JOBCONTROL 33
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"No job control in this shell",
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#define ERR_EXPRESSION 34
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"Expression Syntax",
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#define ERR_NOHOMEDIR 35
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"No home directory",
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#define ERR_CANTCHANGE 36
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"Can't change to home directory",
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#define ERR_NULLCOM 37
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"Invalid null command",
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#define ERR_ASSIGN 38
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"Assignment missing expression",
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#define ERR_UNKNOWNOP 39
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"Unknown operator",
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#define ERR_AMBIG 40
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"Ambiguous",
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#define ERR_EXISTS 41
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"%s: File exists",
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#define ERR_INTR 42
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"Interrupted",
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#define ERR_RANGE 43
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"Subscript out of range",
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#define ERR_OVERFLOW 44
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"Line overflow",
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#define ERR_VARMOD 45
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"Unknown variable modifier",
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#define ERR_NOSUCHJOB 46
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"No such job",
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#define ERR_TERMINAL 47
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"Can't from terminal",
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#define ERR_NOTWHILE 48
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"Not in while/foreach",
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#define ERR_NOPROC 49
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"No more processes",
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#define ERR_NOMATCH 50
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"No match",
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#define ERR_MISSING 51
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"Missing %c",
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#define ERR_UNMATCHED 52
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"Unmatched %c",
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#define ERR_NOMEM 53
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"Out of memory",
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#define ERR_PIPE 54
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"Can't make pipe",
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#define ERR_SYSTEM 55
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"%s: %s",
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#define ERR_STRING 56
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"%s",
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#define ERR_JOBS 57
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"usage: jobs [ -l ]",
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#define ERR_JOBARGS 58
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"Arguments should be jobs or process id's",
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#define ERR_JOBCUR 59
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"No current job",
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#define ERR_JOBPREV 60
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"No previous job",
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#define ERR_JOBPAT 61
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"No job matches pattern",
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#define ERR_NESTING 62
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"Fork nesting > %d; maybe `...` loop",
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#define ERR_JOBCTRLSUB 63
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"No job control in subshells",
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#define ERR_BADPLPS 64
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"Badly placed ()'s",
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#define ERR_STOPPED 65
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"%sThere are suspended jobs",
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#define ERR_NODIR 66
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"No other directory",
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#define ERR_EMPTY 67
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"Directory stack empty",
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#define ERR_BADDIR 68
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"Bad directory",
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#define ERR_DIRUS 69
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"usage: %s [-lvn]%s",
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#define ERR_HFLAG 70
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"No operand for -h flag",
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#define ERR_NOTLOGIN 71
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"Not a login shell",
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#define ERR_DIV0 72
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"Division by 0",
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#define ERR_MOD0 73
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"Mod by 0",
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#define ERR_BADSCALE 74
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"Bad scaling; did you mean \"%s\"?",
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#define ERR_SUSPLOG 75
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"Can't suspend a login shell (yet)",
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#define ERR_UNKUSER 76
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"Unknown user: %s",
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#define ERR_NOHOME 77
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"No $home variable set",
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#define ERR_HISTUS 78
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"usage: history [-rh] [# number of events]",
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#define ERR_SPDOLLT 79
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"$, ! or < not allowed with $# or $?",
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#define ERR_NEWLINE 80
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"Newline in variable name",
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#define ERR_SPSTAR 81
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"* not allowed with $# or $?",
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#define ERR_DIGIT 82
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"$?<digit> or $#<digit> not allowed",
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#define ERR_VARILL 83
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"Illegal variable name",
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#define ERR_NLINDEX 84
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"Newline in variable index",
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#define ERR_EXPOVFL 85
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"Expansion buffer overflow",
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#define ERR_VARSYN 86
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"Variable syntax",
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#define ERR_BADBANG 87
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"Bad ! form",
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#define ERR_NOSUBST 88
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"No previous substitute",
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#define ERR_BADSUBST 89
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"Bad substitute",
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#define ERR_LHS 90
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"No previous left hand side",
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#define ERR_RHSLONG 91
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"Right hand side too long",
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#define ERR_BADBANGMOD 92
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"Bad ! modifier: %c",
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#define ERR_MODFAIL 93
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"Modifier failed",
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#define ERR_SUBOVFL 94
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"Substitution buffer overflow",
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#define ERR_BADBANGARG 95
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"Bad ! arg selector",
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#define ERR_NOSEARCH 96
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"No prev search",
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#define ERR_NOEVENT 97
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"%s: Event not found",
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#define ERR_TOOMANYRP 98
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"Too many )'s",
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#define ERR_TOOMANYLP 99
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"Too many ('s",
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#define ERR_BADPLP 100
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"Badly placed (",
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#define ERR_MISRED 101
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"Missing name for redirect",
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#define ERR_OUTRED 102
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"Ambiguous output redirect",
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#define ERR_REDPAR 103
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"Can't << within ()'s",
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#define ERR_INRED 104
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"Ambiguous input redirect",
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#define ERR_ALIASLOOP 105
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"Alias loop",
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#define ERR_HISTLOOP 106
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"!# History loop",
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#define ERR_ARCH 107
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"%s: %s. Wrong Architecture",
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#define ERR_FILEINQ 108
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"Malformed file inquiry",
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#define ERR_SELOVFL 109
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"Selector overflow",
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#define ERR_INVALID 110
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"Invalid Error"
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};
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/*
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* The parser and scanner set up errors for later by calling seterr,
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* which sets the variable err as a side effect; later to be tested,
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* e.g. in process.
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*/
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void
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seterror(int id, ...)
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{
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if (seterr == 0) {
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char berr[BUFSIZE];
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va_list va;
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va_start(va, id);
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if (id < 0 || id >= (int)(sizeof(errorlist) / sizeof(errorlist[0])) - 1)
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id = ERR_INVALID;
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(void)vsnprintf(berr, sizeof(berr), errorlist[id], va);
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va_end(va);
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seterr = strsave(berr);
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}
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}
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/*
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* Print the error with the given id.
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*
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* Special ids:
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* ERR_SILENT: Print nothing.
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* ERR_OLD: Print the previously set error if one was there.
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* otherwise return.
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* ERR_NAME: If this bit is set, print the name of the function
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* in bname
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*
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* This routine always resets or exits. The flag haderr
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* is set so the routine who catches the unwind can propogate
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* it if they want.
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*
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* Note that any open files at the point of error will eventually
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* be closed in the routine process in sh.c which is the only
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* place error unwinds are ever caught.
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*/
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void
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stderror(int id, ...)
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{
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va_list va;
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Char **v;
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int flags;
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flags = id & ERR_FLAGS;
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id &= ~ERR_FLAGS;
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if ((flags & ERR_OLD) && seterr == NULL)
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abort();
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if (id < 0 || id > (int)(sizeof(errorlist) / sizeof(errorlist[0])))
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id = ERR_INVALID;
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(void)fflush(cshout);
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(void)fflush(csherr);
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haderr = 1; /* Now to diagnostic output */
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timflg = 0; /* This isn't otherwise reset */
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if (!(flags & ERR_SILENT)) {
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if (flags & ERR_NAME)
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(void)fprintf(csherr, "%s: ", bname);
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if ((flags & ERR_OLD))
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/* Old error. */
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(void)fprintf(csherr, "%s.\n", seterr);
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else {
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va_start(va, id);
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(void)vfprintf(csherr, errorlist[id], va);
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va_end(va);
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(void)fprintf(csherr, ".\n");
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}
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}
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if (seterr) {
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xfree((ptr_t) seterr);
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seterr = NULL;
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}
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if ((v = pargv) != NULL)
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pargv = 0, blkfree(v);
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if ((v = gargv) != NULL)
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gargv = 0, blkfree(v);
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(void)fflush(cshout);
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(void)fflush(csherr);
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didfds = 0; /* Forget about 0,1,2 */
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/*
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* Go away if -e or we are a child shell
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*/
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if (exiterr || child)
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xexit(1);
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/*
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* Reset the state of the input. This buffered seek to end of file will
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* also clear the while/foreach stack.
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*/
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btoeof();
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set(STRstatus, Strsave(STR1));
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if (tpgrp > 0)
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(void)tcsetpgrp(FSHTTY, tpgrp);
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reset(); /* Unwind */
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}
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