e172367898
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@23814 ec53bebd-3082-4978-b11e-865c3cabbd6b
85 lines
2.7 KiB
Groff
85 lines
2.7 KiB
Groff
.\" Copyright (c) 2001, 2003 Kungliga Tekniska Högskolan
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.\" (Royal Institute of Technology, Stockholm, Sweden).
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.\" All rights reserved.
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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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.\"
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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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.\"
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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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.\"
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.\" 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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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.\" $Id$
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.\"
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.Dd August 14, 2003
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.Dt ECALLOC 3
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.Os HEIMDAL
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.Sh NAME
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.Nm ecalloc ,
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.Nm emalloc ,
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.Nm eread ,
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.Nm erealloc ,
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.Nm esetenv ,
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.Nm estrdup ,
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.Nm ewrite
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.Nd exit-on-failure wrapper functions
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.Sh LIBRARY
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The roken library (libroken, -lroken)
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.Sh SYNOPSIS
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.Fd #include <roken.h>
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.Ft "void *"
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.Fn ecalloc "size_t number" "size_t size"
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.Ft "void *"
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.Fn emalloc "size_t sz"
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.Ft ssize_t
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.Fn eread "int fd" "void *buf" "size_t nbytes"
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.Ft "void *"
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.Fn erealloc "void *ptr" "size_t sz"
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.Ft void
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.Fn esetenv "const char *var" "const char *val" "int rewrite"
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.Ft "char *"
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.Fn estrdup "const char *str"
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.Ft ssize_t
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.Fn ewrite "int fd" "const void *buf" "size_t nbytes"
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.Sh DESCRIPTION
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These functions do the same as the ones without the
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.Dq e
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prefix, but if there is an error they will print a message with
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.Xr errx 3 ,
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and exit. For
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.Nm eread
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and
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.Nm ewrite
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this is also true for partial data.
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.Pp
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This is useful in applications when there is no need for a more
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advanced failure mode.
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.Sh SEE ALSO
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.Xr read 2 ,
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.Xr write 2 ,
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.Xr calloc 3 ,
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.Xr errx 3 ,
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.Xr malloc 3 ,
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.Xr realloc 3 ,
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.Xr setenv 3 ,
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.Xr strdup 3
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