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