fminject/common/inj_err.c

	inj_err.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * Error-handling routines
 */

#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <errno.h>

#include <inj_err.h>

/*LINTLIBRARY*/

static const char *pname;

#pragma init(getpname)
const char *
getpname(void)
{
    const char *p, *q;

    if (pname != NULL)
        return (pname);

    if ((p = getexecname()) != NULL)
        q = strrchr(p, '/');
    else
        q = NULL;

    if (q == NULL)
        pname = p;
    else
        pname = q + 1;

    return (pname);
}

void
vwarn(const char *format, va_list alist)
{
    int err = errno;

    if (pname != NULL)
        (void) fprintf(stderr, "%s: ", pname);

    (void) vfprintf(stderr, format, alist);

    if (strchr(format, '\n') == NULL)
        (void) fprintf(stderr, ": %s\n", strerror(err));
}

/*PRINTFLIKE1*/
void
warn(const char *format, ...)
{
    va_list alist;

    va_start(alist, format);
    vwarn(format, alist);
    va_end(alist);
}

void
vdie(const char *format, va_list alist)
{
    vwarn(format, alist);
    exit(E_ERROR);
}

/*PRINTFLIKE1*/
void
die(const char *format, ...)
{
    va_list alist;

    va_start(alist, format);
    vdie(format, alist);
    va_end(alist);
}

int
inj_set_errno(int err)
{
    errno = err;
    return (-1);
}