NetBSD/lib/libutil/efun.3

.\"     $NetBSD: efun.3,v 1.5 2007/07/01 21:41:16 pooka Exp $
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.\" Copyright (c) 2006 The NetBSD Foundation, Inc.
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.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Christos Zoulas.
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.Dd July 1, 2007
.Dt EFUN 3
.Os
.Sh NAME
.Nm esetfunc ,
.Nm easprintf ,
.Nm efopen ,
.Nm emalloc ,
.Nm ecalloc ,
.Nm erealloc ,
.Nm estrdup ,
.Nm estrndup ,
.Nm estrlcat ,
.Nm estrlcpy ,
.Nm evasprintf
.Nd error-checked utility functions
.Sh LIBRARY
.Lb libutil
.Sh SYNOPSIS
.In util.h
.Ft void (*)(int, const char *, ...)
.Fn esetfunc "void (*)(int, const char *, ...)"
.Ft int
.Fn easprintf "char ** restrict str" "const char * restrict fmt" "..."
.Ft FILE *
.Fn efopen "const char *p" "const char *m"
.Ft void *
.Fn ecalloc "size_t n" "size_t c"
.Ft void *
.Fn emalloc "size_t n"
.Ft void *
.Fn erealloc "void *p" "size_t n"
.Ft char *
.Fn estrdup "const char *s"
.Ft char *
.Fn estrndup "const char *s" "size_t len"
.Ft size_t
.Fn estrlcat "char *dst" "const char *src" "size_t len"
.Ft size_t
.Fn estrlcpy "char *dst" "const char *src" "size_t len"
.Ft int
.Fn evasprintf "char ** restrict str" "const char * restrict fmt" "..."
.Sh DESCRIPTION
The
.Nm easprintf ,
.Nm efopen ,
.Nm ecalloc ,
.Nm emalloc ,
.Nm erealloc ,
.Nm estrdup ,
.Nm estrndup ,
.Nm estrlcat ,
.Nm estrlcpy ,
and
.Nm evasprintf
functions
operate exactly as the correspoding functions that do not start with an
.Sq e
except that they call
the installed error handler that can be configured with
.Nm esetfunc .
The default error handler is
.Xr err 3 .
The function
.Nm esetfunc
returns the previous error handler function.
A
.Dv NULL
error handler will just call
.Xr exit 3 .
.Sh SEE ALSO
.Xr asprintf 3 ,
.Xr calloc 3 ,
.Xr err 3 ,
.Xr exit 3 ,
.Xr fopen 3 ,
.Xr malloc 3 ,
.Xr realloc 3 ,
.Xr strdup 3 ,
.Xr strndup 3 ,
.Xr strlcat 3 ,
.Xr strlcpy 3 ,
.Xr vasprintf 3