85 lines
2.7 KiB
Groff
85 lines
2.7 KiB
Groff
.\" Copyright (c) 2001, 2003 Kungliga Tekniska Högskolan
|
|
.\" (Royal Institute of Technology, Stockholm, Sweden).
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\"
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\"
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" 3. Neither the name of the Institute nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\" $Id$
|
|
.\"
|
|
.Dd August 14, 2003
|
|
.Dt ECALLOC 3
|
|
.Os HEIMDAL
|
|
.Sh NAME
|
|
.Nm ecalloc ,
|
|
.Nm emalloc ,
|
|
.Nm eread ,
|
|
.Nm erealloc ,
|
|
.Nm esetenv ,
|
|
.Nm estrdup ,
|
|
.Nm ewrite
|
|
.Nd exit-on-failure wrapper functions
|
|
.Sh LIBRARY
|
|
The roken library (libroken, -lroken)
|
|
.Sh SYNOPSIS
|
|
.Fd #include <roken.h>
|
|
.Ft "void *"
|
|
.Fn ecalloc "size_t number" "size_t size"
|
|
.Ft "void *"
|
|
.Fn emalloc "size_t sz"
|
|
.Ft ssize_t
|
|
.Fn eread "int fd" "void *buf" "size_t nbytes"
|
|
.Ft "void *"
|
|
.Fn erealloc "void *ptr" "size_t sz"
|
|
.Ft void
|
|
.Fn esetenv "const char *var" "const char *val" "int rewrite"
|
|
.Ft "char *"
|
|
.Fn estrdup "const char *str"
|
|
.Ft ssize_t
|
|
.Fn ewrite "int fd" "const void *buf" "size_t nbytes"
|
|
.Sh DESCRIPTION
|
|
These functions do the same as the ones without the
|
|
.Dq e
|
|
prefix, but if there is an error they will print a message with
|
|
.Xr errx 3 ,
|
|
and exit. For
|
|
.Nm eread
|
|
and
|
|
.Nm ewrite
|
|
this is also true for partial data.
|
|
.Pp
|
|
This is useful in applications when there is no need for a more
|
|
advanced failure mode.
|
|
.Sh SEE ALSO
|
|
.Xr read 2 ,
|
|
.Xr write 2 ,
|
|
.Xr calloc 3 ,
|
|
.Xr errx 3 ,
|
|
.Xr malloc 3 ,
|
|
.Xr realloc 3 ,
|
|
.Xr setenv 3 ,
|
|
.Xr strdup 3
|