1.\" $NetBSD: efun.3,v 1.3 2006/10/06 15:31:20 pooka Exp $ 2.\" 3.\" Copyright (c) 2006 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Christos Zoulas. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd October 6, 2006 38.Dt EFUN 3 39.Os 40.Sh NAME 41.Nm esetfunc , 42.Nm easprintf , 43.Nm efopen , 44.Nm emalloc , 45.Nm ecalloc , 46.Nm erealloc , 47.Nm estrdup , 48.Nm estrlcat , 49.Nm estrlcpy , 50.Nm evasprintf 51.Nd error-checked utility functions 52.Sh LIBRARY 53.Lb libutil 54.Sh SYNOPSIS 55.In util.h 56.Ft void (*)(int, const char *, ...) 57.Fn esetfun "void (*)(int, const char *, ...)" 58.Ft int 59.Fn easprintf "char ** restrict str" "const char * restrict fmt" "..." 60.Ft FILE * 61.Fn efopen "const char *p" "const char *m" 62.Ft void * 63.Fn ecalloc "size_t n" "size_t c" 64.Ft void * 65.Fn emalloc "size_t n" 66.Ft void * 67.Fn erealloc "void *p" "size_t n" 68.Ft char * 69.Fn estrdup "const char *s" 70.Ft size_t 71.Fn estrlcat "char *dst" "const char *src" "size_t len" 72.Ft size_t 73.Fn estrlcpy "char *dst" "const char *src" "size_t len" 74.Ft int 75.Fn evasprintf "char ** restrict str" "const char * restrict fmt" "..." 76.Sh DESCRIPTION 77The 78.Nm easprintf , 79.Nm efopen , 80.Nm ecalloc , 81.Nm emalloc , 82.Nm erealloc , 83.Nm estrdup , 84.Nm estrlcat , 85.Nm estrlcpy , 86and 87.Nm evasprintf 88functions 89operate exactly as the correspoding functions that do not start with an 90.Sq e 91except that they call 92the installed error handler that can be configured with 93.Nm esetfunc . 94The default error handler is 95.Xr err 3 . 96The function 97.Nm esetfunc 98returns the previous error handler function. 99A 100.Dv NULL 101error handler will just call 102.Xr exit 3 . 103.Sh SEE ALSO 104.Xr asprintf 3 , 105.Xr calloc 3 , 106.Xr err 3 , 107.Xr exit 3 , 108.Xr fopen 3 , 109.Xr malloc 3 , 110.Xr realloc 3 , 111.Xr strdup 3 , 112.Xr strlcat 3 , 113.Xr strlcpy 3 , 114.Xr vasprintf 3 115