+++ /dev/null
-/* @(#)checkerr.c 1.24 09/07/08 Copyright 2003-2009 J. Schilling */
-#include <schily/mconfig.h>
-#ifndef lint
-static UConst char sccsid[] =
- "@(#)checkerr.c 1.24 09/07/08 Copyright 2003-2009 J. Schilling";
-#endif
-/*
- * Generic error control for programs that do file i/o.
- * The error control is usually used by archiving programs.
- *
- * The current version does not provide a stable interface.
- * It does not support multi-threaded programs and it may call
- * comerr() from the parser. If you use the code before there is
- * an official stable and "library-compliant" interface, be careful
- * and watch for changes.
- *
- * Copyright (c) 2003-2009 J. Schilling
- */
-/*
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License, Version 1.0 only
- * (the "License"). You may not use this file except in compliance
- * with the License.
- *
- * See the file CDDL.Schily.txt in this distribution for details.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file CDDL.Schily.txt from this distribution.
- */
-
-#include <schily/stdio.h>
-#include <schily/standard.h>
-#include <schily/patmatch.h>
-#include <schily/string.h>
-#include <schily/utypes.h>
-#include <schily/schily.h>
-#include <schily/checkerr.h>
-
-typedef struct errconf {
- struct errconf *ec_next; /* Next in list */
- const Uchar *ec_pat; /* File name pattern */
- int *ec_aux; /* Aux array from pattern compiler */
- int ec_alt; /* Alt return from pattern compiler */
- int ec_plen; /* String length of pattern */
- UInt32_t ec_flags; /* Error condition flags */
-} ec_t;
-
-LOCAL int *ec_state; /* State array for pattern compiler */
-LOCAL ec_t *ec_root; /* Root node of error config list */
-LOCAL ec_t **ec_last = &ec_root; /* Last pointer in root node list */
-LOCAL int maxplen;
-LOCAL BOOL _errflag = TRUE; /* Abort on all errors */
-
-EXPORT int errconfig __PR((char *name));
-LOCAL char *_endword __PR((char *p));
-LOCAL void parse_errctl __PR((char *line));
-LOCAL UInt32_t errflags __PR((char *eflag, BOOL doexit));
-LOCAL ec_t *_errptr __PR((int etype, const char *fname));
-EXPORT BOOL errhidden __PR((int etype, const char *fname));
-EXPORT BOOL errwarnonly __PR((int etype, const char *fname));
-EXPORT BOOL errabort __PR((int etype, const char *fname, BOOL doexit));
-
-/*
- * Read and parse error configuration file
- */
-EXPORT int
-errconfig(name)
- char *name;
-{
- char line[8192];
- FILE *f;
- int omaxplen = maxplen;
-
- if ((f = fileopen(name, "r")) == NULL) {
- if (errflags(name, FALSE) != 0)
- parse_errctl(name);
- else
- comerr("Cannot open '%s'.\n", name);
- } else {
- while (fgetline(f, line, sizeof (line)) >= 0) {
- parse_errctl(line);
- }
- fclose(f);
- }
- if (maxplen > omaxplen) {
- ec_state = ___realloc(ec_state, (maxplen+1)*sizeof (int),
- "pattern state");
- }
- return (1);
-}
-
-LOCAL char *
-_endword(p)
- char *p;
-{
- /*
- * Find end of word.
- */
- for (; *p != '\0' &&
- *p != '\t' &&
- *p != ' ';
- p++) {
- ;
- /* LINTED */
- }
- return (p);
-}
-
-LOCAL void
-parse_errctl(line)
- char *line;
-{
- int plen;
- char *pattern;
- ec_t *ep;
-
- /*
- * Find end of word.
- */
- pattern = _endword(line);
-
- if (pattern == line || *pattern == '\0') {
- comerrno(EX_BAD,
- "Bad error configuration line '%s'.\n", line);
- }
- /*
- * Find end of white space after word.
- */
- for (pattern++; *pattern != '\0' &&
- (*pattern == '\t' || *pattern == ' ');
- pattern++) {
- ;
- /* LINTED */
- }
- ep = ___malloc(sizeof (ec_t), "errcheck node");
- ep->ec_flags = errflags(line, TRUE);
- ep->ec_plen = plen = strlen(pattern);
- if (ep->ec_plen > maxplen)
- maxplen = ep->ec_plen;
- ep->ec_pat = (const Uchar *)___savestr(pattern);
- ep->ec_aux = ___malloc(plen*sizeof (int), "compiled pattern");
- if ((ep->ec_alt = patcompile((const Uchar *)pattern,
- plen, ep->ec_aux)) == 0)
- comerrno(EX_BAD, "Bad errctl pattern: '%s'.\n", pattern);
-
- ep->ec_next = NULL;
- *ec_last = ep;
- ec_last = &ep->ec_next;
-}
-
-LOCAL struct eflags {
- char *fname;
- UInt32_t fval;
-} eflags[] = {
- { "STAT", E_STAT },
- { "GETACL", E_GETACL },
- { "OPEN", E_OPEN },
- { "READ", E_READ },
- { "WRITE", E_WRITE },
- { "GROW", E_GROW },
- { "SHRINK", E_SHRINK },
- { "MISSLINK", E_MISSLINK },
- { "NAMETOOLONG", E_NAMETOOLONG },
- { "FILETOOBIG", E_FILETOOBIG },
- { "SPECIALFILE", E_SPECIALFILE },
- { "READLINK", E_READLINK },
- { "GETXATTR", E_GETXATTR },
- { "CHDIR", E_CHDIR },
-
- { "SETTIME", E_SETTIME },
- { "SETMODE", E_SETMODE },
- { "SECURITY", E_SECURITY },
- { "LSECURITY", E_LSECURITY },
- { "SAMEFILE", E_SAMEFILE },
- { "BADACL", E_BADACL },
- { "SETACL", E_SETACL },
- { "SETXATTR", E_SETXATTR },
-
- { "ALL", E_ALL },
-
- { "DIFF", E_DIFF },
- { "WARN", E_WARN },
- { "ABORT", E_ABORT },
-
- { NULL, 0 }
-};
-
-/*
- * Convert error condition string into flag word
- */
-LOCAL UInt32_t
-errflags(eflag, doexit)
- char *eflag;
- BOOL doexit;
-{
- register char *p = eflag;
- char *ef = _endword(eflag);
- register struct eflags *ep;
- register int slen;
- register UInt32_t nflags = 0;
-
- do {
- for (ep = eflags; ep->fname; ep++) {
- slen = strlen(ep->fname);
- if ((strncmp(ep->fname, p, slen) == 0) &&
- (p[slen] == '|' || p[slen] == ' ' ||
- p[slen] == '\0')) {
- nflags |= ep->fval;
- break;
- }
- }
- if (ep->fname == NULL) {
- if (doexit)
- comerrno(EX_BAD, "Bad flag '%s'\n", p);
- return (0);
- }
- p = strchr(p, '|');
- } while (p < ef && p && *p++ == '|');
-
- if ((nflags & ~(UInt32_t)(E_ABORT|E_WARN)) == 0) {
- if (doexit)
- comerrno(EX_BAD, "Bad error condition '%s'.\n", eflag);
- return (0);
- }
- return (nflags);
-}
-
-LOCAL ec_t *
-_errptr(etype, fname)
- int etype;
- const char *fname;
-{
- ec_t *ep = ec_root;
- char *ret;
- const Uchar *name = (const Uchar *)fname;
- int nlen;
-
- if (fname == NULL) {
- errmsgno(EX_BAD,
- "Implementation botch for errhidden(0x%X, NULL)\n",
- etype);
- errmsgno(EX_BAD, "Please report this bug!\n");
- errmsgno(EX_BAD, "Error cannot be ignored.\n");
- return ((ec_t *)NULL);
- }
- nlen = strlen(fname);
- while (ep) {
- if ((ep->ec_flags & etype) != 0) {
- ret = (char *)patmatch(ep->ec_pat, ep->ec_aux,
- name, 0,
- nlen, ep->ec_alt, ec_state);
- if (ret != NULL && *ret == '\0')
- return (ep);
- }
- ep = ep->ec_next;
- }
- return ((ec_t *)NULL);
-}
-
-/*
- * Check whether error condition should be ignored for file name.
- */
-EXPORT BOOL
-errhidden(etype, fname)
- int etype;
- const char *fname;
-{
- ec_t *ep;
-
- if ((ep = _errptr(etype, fname)) != NULL) {
- if ((ep->ec_flags & (E_ABORT|E_WARN)) != 0)
- return (FALSE);
- return (TRUE);
- }
- return (FALSE);
-}
-
-/*
- * Check whether error condition should not affect exit code for file name.
- */
-EXPORT BOOL
-errwarnonly(etype, fname)
- int etype;
- const char *fname;
-{
- ec_t *ep;
-
- if ((ep = _errptr(etype, fname)) != NULL) {
- if ((ep->ec_flags & E_WARN) != 0)
- return (TRUE);
- return (FALSE);
- }
- return (FALSE);
-}
-
-/*
- * Check whether error condition should be fatal for file name.
- */
-EXPORT BOOL
-errabort(etype, fname, doexit)
- int etype;
- const char *fname;
- BOOL doexit;
-{
- ec_t *ep;
-
- if ((ep = _errptr(etype, fname)) == NULL) {
- if (!_errflag)
- return (FALSE);
- } else if ((ep->ec_flags & E_ABORT) == 0)
- return (FALSE);
-
- if (doexit) {
- errmsgno(EX_BAD, "Error is considered fatal, aborting.\n");
-#ifdef CALL_OTHER_FUNCTION
- if (other_func != NULL)
- (*other_func)();
- else
-#endif
- comexit(-3);
- }
- return (TRUE);
-}
projects / reactos.git / blobdiff