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/* $OpenBSD: util.c,v 1.18 2016/10/16 09:35:40 tb Exp $ */ |
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/* $NetBSD: util.c,v 1.5 1996/08/31 20:58:29 mycroft Exp $ */ |
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/* |
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* Copyright (c) 1992, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* This software was developed by the Computer Systems Engineering group |
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and |
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* contributed to Berkeley. |
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* |
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* All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed by the University of |
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* California, Lawrence Berkeley Laboratories. |
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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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* from: @(#)util.c 8.1 (Berkeley) 6/6/93 |
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*/ |
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#include <sys/types.h> |
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#include <ctype.h> |
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#include <err.h> |
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#include <stdarg.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include "config.h" |
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static void vxerror(const char *, int, const char *, va_list) |
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__attribute__((__format__ (printf, 3, 0))); |
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/* |
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* Malloc, with abort on error. |
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*/ |
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void * |
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emalloc(size_t size) |
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{ |
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void *p; |
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if ((p = calloc(1, size)) == NULL) |
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err(1, NULL); |
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return p; |
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} |
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/* |
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* Reallocarray, with abort on error. |
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*/ |
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void * |
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ereallocarray(void *p, size_t sz1, size_t sz2) |
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{ |
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if ((p = reallocarray(p, sz1, sz2)) == NULL) |
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err(1, NULL); |
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return p; |
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} |
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/* |
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* Calloc, with abort on error. |
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*/ |
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void * |
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ecalloc(size_t sz1, size_t sz2) |
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{ |
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void *p; |
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if ((p = calloc(sz1, sz2)) == NULL) |
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err(1, NULL); |
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return p; |
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} |
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/* |
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* Prepend the source path to a file name. |
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*/ |
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char * |
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sourcepath(const char *file) |
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{ |
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char *cp; |
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if (asprintf(&cp, "%s/%s", srcdir, file) == -1) |
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err(1, NULL); |
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return cp; |
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} |
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static struct nvlist *nvhead; |
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struct nvlist * |
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newnv(const char *name, const char *str, void *ptr, int i, struct nvlist *next) |
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{ |
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struct nvlist *nv; |
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if ((nv = nvhead) == NULL) |
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nv = emalloc(sizeof(*nv)); |
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else |
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nvhead = nv->nv_next; |
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nv->nv_next = next; |
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nv->nv_name = (char *)name; |
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if (ptr == NULL) |
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nv->nv_str = str; |
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else { |
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if (str != NULL) |
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panic("newnv"); |
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nv->nv_ptr = ptr; |
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} |
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nv->nv_int = i; |
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return nv; |
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} |
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/* |
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* Free an nvlist structure (just one). |
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*/ |
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void |
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nvfree(struct nvlist *nv) |
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{ |
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nv->nv_next = nvhead; |
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nvhead = nv; |
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} |
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/* |
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* Free an nvlist (the whole list). |
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*/ |
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void |
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nvfreel(struct nvlist *nv) |
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{ |
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struct nvlist *next; |
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for (; nv != NULL; nv = next) { |
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next = nv->nv_next; |
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nv->nv_next = nvhead; |
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nvhead = nv; |
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} |
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} |
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/* |
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* External (config file) error. Complain, using current file |
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* and line number. |
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*/ |
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void |
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error(const char *fmt, ...) |
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{ |
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va_list ap; |
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extern const char *yyfile; |
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va_start(ap, fmt); |
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vxerror(yyfile, currentline(), fmt, ap); |
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va_end(ap); |
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} |
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/* |
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* Delayed config file error (i.e., something was wrong but we could not |
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* find out about it until later). |
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*/ |
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void |
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xerror(const char *file, int line, const char *fmt, ...) |
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{ |
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va_list ap; |
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va_start(ap, fmt); |
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vxerror(file, line, fmt, ap); |
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va_end(ap); |
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} |
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/* |
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* Internal form of error() and xerror(). |
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*/ |
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static void |
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vxerror(const char *file, int line, const char *fmt, va_list ap) |
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{ |
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(void)fprintf(stderr, "%s:%d: ", file, line); |
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(void)vfprintf(stderr, fmt, ap); |
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(void)putc('\n', stderr); |
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errors++; |
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} |
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/* |
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* Internal error, abort. |
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*/ |
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__dead void |
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panic(const char *fmt, ...) |
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{ |
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va_list ap; |
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va_start(ap, fmt); |
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(void)fprintf(stderr, "config: panic: "); |
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(void)vfprintf(stderr, fmt, ap); |
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(void)putc('\n', stderr); |
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va_end(ap); |
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exit(2); |
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} |