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/*
* 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) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include "libuutil_common.h"
#include <assert.h>
#include <errno.h>
#include <libintl.h>
#include <pthread.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/debug.h>
#include <unistd.h>
#include <ctype.h>
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
/*
* All of the old code under !defined(PTHREAD_ONCE_KEY_NP)
* is here to enable the building of a native version of
* libuutil.so when the build machine has not yet been upgraded
* to a version of libc that provides pthread_key_create_once_np().
* It should all be deleted when solaris_nevada ships.
* The code is not MT-safe in a relaxed memory model.
*/
#if defined(PTHREAD_ONCE_KEY_NP)
static pthread_key_t uu_error_key = PTHREAD_ONCE_KEY_NP;
#else /* PTHREAD_ONCE_KEY_NP */
static pthread_key_t uu_error_key = 0;
static pthread_mutex_t uu_key_lock = PTHREAD_MUTEX_INITIALIZER;
#endif /* PTHREAD_ONCE_KEY_NP */
static int uu_error_key_setup = 0;
static pthread_mutex_t uu_panic_lock = PTHREAD_MUTEX_INITIALIZER;
/* LINTED static unused */
static const char *uu_panic_format;
/* LINTED static unused */
static va_list uu_panic_args;
static pthread_t uu_panic_thread;
static uint32_t _uu_main_error;
static __thread int _uu_main_thread = 0;
void
uu_set_error(uint_t code)
{
if (_uu_main_thread) {
_uu_main_error = code;
return;
}
#if defined(PTHREAD_ONCE_KEY_NP)
if (pthread_key_create_once_np(&uu_error_key, NULL) != 0)
uu_error_key_setup = -1;
else
uu_error_key_setup = 1;
#else /* PTHREAD_ONCE_KEY_NP */
if (uu_error_key_setup == 0) {
(void) pthread_mutex_lock(&uu_key_lock);
if (uu_error_key_setup == 0) {
if (pthread_key_create(&uu_error_key, NULL) != 0)
uu_error_key_setup = -1;
else
uu_error_key_setup = 1;
}
(void) pthread_mutex_unlock(&uu_key_lock);
}
#endif /* PTHREAD_ONCE_KEY_NP */
if (uu_error_key_setup > 0)
(void) pthread_setspecific(uu_error_key,
(void *)(uintptr_t)code);
}
uint32_t
uu_error(void)
{
if (_uu_main_thread)
return (_uu_main_error);
if (uu_error_key_setup < 0) /* can't happen? */
return (UU_ERROR_UNKNOWN);
/*
* Because UU_ERROR_NONE == 0, if uu_set_error() was
* never called, then this will return UU_ERROR_NONE:
*/
return ((uint32_t)(uintptr_t)pthread_getspecific(uu_error_key));
}
const char *
uu_strerror(uint32_t code)
{
const char *str;
switch (code) {
case UU_ERROR_NONE:
str = dgettext(TEXT_DOMAIN, "No error");
break;
case UU_ERROR_INVALID_ARGUMENT:
str = dgettext(TEXT_DOMAIN, "Invalid argument");
break;
case UU_ERROR_UNKNOWN_FLAG:
str = dgettext(TEXT_DOMAIN, "Unknown flag passed");
break;
case UU_ERROR_NO_MEMORY:
str = dgettext(TEXT_DOMAIN, "Out of memory");
break;
case UU_ERROR_CALLBACK_FAILED:
str = dgettext(TEXT_DOMAIN, "Callback-initiated failure");
break;
case UU_ERROR_NOT_SUPPORTED:
str = dgettext(TEXT_DOMAIN, "Operation not supported");
break;
case UU_ERROR_EMPTY:
str = dgettext(TEXT_DOMAIN, "No value provided");
break;
case UU_ERROR_UNDERFLOW:
str = dgettext(TEXT_DOMAIN, "Value too small");
break;
case UU_ERROR_OVERFLOW:
str = dgettext(TEXT_DOMAIN, "Value too large");
break;
case UU_ERROR_INVALID_CHAR:
str = dgettext(TEXT_DOMAIN,
"Value contains unexpected character");
break;
case UU_ERROR_INVALID_DIGIT:
str = dgettext(TEXT_DOMAIN,
"Value contains digit not in base");
break;
case UU_ERROR_SYSTEM:
str = dgettext(TEXT_DOMAIN, "Underlying system error");
break;
case UU_ERROR_UNKNOWN:
str = dgettext(TEXT_DOMAIN, "Error status not known");
break;
default:
errno = ESRCH;
str = NULL;
break;
}
return (str);
}
void
uu_panic(const char *format, ...)
{
va_list args;
va_start(args, format);
(void) pthread_mutex_lock(&uu_panic_lock);
if (uu_panic_thread == 0) {
uu_panic_thread = pthread_self();
uu_panic_format = format;
va_copy(uu_panic_args, args);
}
(void) pthread_mutex_unlock(&uu_panic_lock);
(void) vfprintf(stderr, format, args);
va_end(args);
if (uu_panic_thread == pthread_self())
abort();
else
for (;;)
(void) pause();
}
static void
uu_lockup(void)
{
(void) pthread_mutex_lock(&uu_panic_lock);
#if !defined(PTHREAD_ONCE_KEY_NP)
(void) pthread_mutex_lock(&uu_key_lock);
#endif
uu_avl_lockup();
uu_list_lockup();
}
static void
uu_release(void)
{
(void) pthread_mutex_unlock(&uu_panic_lock);
#if !defined(PTHREAD_ONCE_KEY_NP)
(void) pthread_mutex_unlock(&uu_key_lock);
#endif
uu_avl_release();
uu_list_release();
}
static void
uu_release_child(void)
{
uu_panic_format = NULL;
uu_panic_thread = 0;
uu_release();
}
#ifdef __GNUC__
static void
uu_init(void) __attribute__((constructor));
#else
#pragma init(uu_init)
#endif
static void
uu_init(void)
{
_uu_main_thread = 1;
(void) pthread_atfork(uu_lockup, uu_release, uu_release_child);
}
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