1.\" Copyright (c) 2001, 2003 Kungliga Tekniska Högskolan 2.\" (Royal Institute of Technology, Stockholm, Sweden). 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" 3. Neither the name of the Institute nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" $Id$ 32.\" 33.Dd August 14, 2003 34.Dt ECALLOC 3 35.Os HEIMDAL 36.Sh NAME 37.Nm ecalloc , 38.Nm emalloc , 39.Nm eread , 40.Nm erealloc , 41.Nm esetenv , 42.Nm estrdup , 43.Nm ewrite 44.Nd exit-on-failure wrapper functions 45.Sh LIBRARY 46The roken library (libroken, -lroken) 47.Sh SYNOPSIS 48.Fd #include <roken.h> 49.Ft "void *" 50.Fn ecalloc "size_t number" "size_t size" 51.Ft "void *" 52.Fn emalloc "size_t sz" 53.Ft ssize_t 54.Fn eread "int fd" "void *buf" "size_t nbytes" 55.Ft "void *" 56.Fn erealloc "void *ptr" "size_t sz" 57.Ft void 58.Fn esetenv "const char *var" "const char *val" "int rewrite" 59.Ft "char *" 60.Fn estrdup "const char *str" 61.Ft ssize_t 62.Fn ewrite "int fd" "const void *buf" "size_t nbytes" 63.Sh DESCRIPTION 64These functions do the same as the ones without the 65.Dq e 66prefix, but if there is an error they will print a message with 67.Xr errx 3 , 68and exit. For 69.Nm eread 70and 71.Nm ewrite 72this is also true for partial data. 73.Pp 74This is useful in applications when there is no need for a more 75advanced failure mode. 76.Sh SEE ALSO 77.Xr read 2 , 78.Xr write 2 , 79.Xr calloc 3 , 80.Xr errx 3 , 81.Xr malloc 3 , 82.Xr realloc 3 , 83.Xr setenv 3 , 84.Xr strdup 3 85