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authorPawel Jakub Dawidek <pjd@FreeBSD.org>2007-04-06 01:09:06 +0000
committerPawel Jakub Dawidek <pjd@FreeBSD.org>2007-04-06 01:09:06 +0000
commitf0a75d274af375d15b97b830966b99a02b7db911 (patch)
tree3061c8734d9ce560165e672836837a0f411a83c9 /cddl/contrib/opensolaris/lib/libuutil/common/uu_misc.c
parentc8c0ba192e3ac07c3797a1bbca52e5575e019890 (diff)
downloadsrc-f0a75d274af375d15b97b830966b99a02b7db911.tar.gz
src-f0a75d274af375d15b97b830966b99a02b7db911.zip
Please welcome ZFS - The last word in file systems.
ZFS file system was ported from OpenSolaris operating system. The code in under CDDL license. I'd like to thank all SUN developers that created this great piece of software. Supported by: Wheel LTD (http://www.wheel.pl/) Supported by: The FreeBSD Foundation (http://www.freebsdfoundation.org/) Supported by: Sentex (http://www.sentex.net/)
Notes
Notes: svn path=/head/; revision=168404
Diffstat (limited to 'cddl/contrib/opensolaris/lib/libuutil/common/uu_misc.c')
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1 files changed, 250 insertions, 0 deletions
diff --git a/cddl/contrib/opensolaris/lib/libuutil/common/uu_misc.c b/cddl/contrib/opensolaris/lib/libuutil/common/uu_misc.c
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+++ b/cddl/contrib/opensolaris/lib/libuutil/common/uu_misc.c
@@ -0,0 +1,250 @@
+/*
+ * 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 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+#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 <thread.h>
+#include <unistd.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;
+
+void
+uu_set_error(uint_t code)
+{
+
+#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_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);
+
+ if (uu_panic_thread == pthread_self())
+ abort();
+ else
+ for (;;)
+ (void) pause();
+}
+
+int
+assfail(const char *astring, const char *file, int line)
+{
+ __assert(astring, file, line);
+ /*NOTREACHED*/
+ return (0);
+}
+
+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();
+}
+
+#pragma init(uu_init)
+static void
+uu_init(void)
+{
+ (void) pthread_atfork(uu_lockup, uu_release, uu_release_child);
+}