err.c revision 315e695527b211489a44386ec695c6ccd3af4e6e
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include "lint.h"
#include "file64.h"
#include "mtlib.h"
#include "thr_uberdata.h"
#include <sys/types.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <dlfcn.h>
#include "stdiom.h"
/* Function exit/warning functions and global variables. */
const char *__progname; /* GNU/Linux/BSD compatibility */
#define PROGNAMESIZE 128 /* buffer size for __progname */
const char *
getprogname(void)
{
return (__progname);
}
void
setprogname(const char *argv0)
{
uberdata_t *udp = curthread->ul_uberdata;
const char *progname;
if ((progname = strrchr(argv0, '/')) == NULL)
progname = argv0;
else
progname++;
if (udp->progname == NULL)
udp->progname = lmalloc(PROGNAMESIZE);
(void) strlcpy(udp->progname, progname, PROGNAMESIZE);
__progname = udp->progname;
}
/* called only from libc_init() */
void
init_progname(void)
{
Dl_argsinfo_t args;
const char *argv0;
if (dlinfo(RTLD_SELF, RTLD_DI_ARGSINFO, &args) < 0 ||
args.dla_argc <= 0 ||
(argv0 = args.dla_argv[0]) == NULL)
argv0 = "UNKNOWN";
setprogname(argv0);
}
/*
* warncore() is the workhorse of these functions. Everything else has
* a warncore() component in it.
*/
static rmutex_t *
warncore(FILE *fp, const char *fmt, va_list args)
{
rmutex_t *lk;
FLOCKFILE(lk, fp);
if (__progname != NULL)
(void) fprintf(fp, "%s: ", __progname);
if (fmt != NULL) {
(void) vfprintf(fp, fmt, args);
}
return (lk);
}
/* Finish a warning with a newline and a flush of stderr. */
static void
warnfinish(FILE *fp, rmutex_t *lk)
{
(void) fputc('\n', fp);
(void) fflush(fp);
FUNLOCKFILE(lk);
}
void
_vwarnxfp(FILE *fp, const char *fmt, va_list args)
{
rmutex_t *lk;
lk = warncore(fp, fmt, args);
warnfinish(fp, lk);
}
void
vwarnx(const char *fmt, va_list args)
{
_vwarnxfp(stderr, fmt, args);
}
void
_vwarnfp(FILE *fp, const char *fmt, va_list args)
{
int tmperr = errno; /* Capture errno now. */
rmutex_t *lk;
lk = warncore(fp, fmt, args);
if (fmt != NULL) {
(void) fputc(':', fp);
(void) fputc(' ', fp);
}
(void) fputs(strerror(tmperr), fp);
warnfinish(fp, lk);
}
void
vwarn(const char *fmt, va_list args)
{
_vwarnfp(stderr, fmt, args);
}
/* PRINTFLIKE1 */
void
warnx(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vwarnx(fmt, args);
va_end(args);
}
void
_warnfp(FILE *fp, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
_vwarnfp(fp, fmt, args);
va_end(args);
}
void
_warnxfp(FILE *fp, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
_vwarnxfp(fp, fmt, args);
va_end(args);
}
/* PRINTFLIKE1 */
void
warn(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vwarn(fmt, args);
va_end(args);
}
/* PRINTFLIKE2 */
void
err(int status, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vwarn(fmt, args);
va_end(args);
exit(status);
}
void
_errfp(FILE *fp, int status, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
_vwarnfp(fp, fmt, args);
va_end(args);
exit(status);
}
void
verr(int status, const char *fmt, va_list args)
{
vwarn(fmt, args);
exit(status);
}
void
_verrfp(FILE *fp, int status, const char *fmt, va_list args)
{
_vwarnfp(fp, fmt, args);
exit(status);
}
/* PRINTFLIKE2 */
void
errx(int status, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vwarnx(fmt, args);
va_end(args);
exit(status);
}
void
_errxfp(FILE *fp, int status, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
_vwarnxfp(fp, fmt, args);
va_end(args);
exit(status);
}
void
verrx(int status, const char *fmt, va_list args)
{
vwarnx(fmt, args);
exit(status);
}
void
_verrxfp(FILE *fp, int status, const char *fmt, va_list args)
{
_vwarnxfp(fp, fmt, args);
exit(status);
}