0d787c1fa1
This adds __libc_fatal, cleans up the internal logging code a bit more, and switches suitable callers over to __libc_fatal. In addition to logging, __libc_fatal stashes the message somewhere that the debuggerd signal handler can find it before calling abort. In the debuggerd signal handler, we pass this address to debuggerd so that it can come back with ptrace to read the message and present it to the user. Bug: 8531731 Change-Id: I416ec1da38a8a1b0d0a582ccd7c8aaa681ed4a29
113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
/*
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* Copyright (C) 2010 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _LIBC_LOGGING_H
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#define _LIBC_LOGGING_H
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#include <sys/cdefs.h>
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#include <stdarg.h>
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#include <stddef.h>
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#include <stdint.h>
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__BEGIN_DECLS
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enum {
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BIONIC_EVENT_MEMCPY_BUFFER_OVERFLOW = 80100,
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BIONIC_EVENT_STRCAT_BUFFER_OVERFLOW = 80105,
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BIONIC_EVENT_MEMMOVE_BUFFER_OVERFLOW = 80110,
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BIONIC_EVENT_STRNCAT_BUFFER_OVERFLOW = 80115,
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BIONIC_EVENT_STRNCPY_BUFFER_OVERFLOW = 80120,
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BIONIC_EVENT_MEMSET_BUFFER_OVERFLOW = 80125,
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BIONIC_EVENT_STRCPY_BUFFER_OVERFLOW = 80130,
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BIONIC_EVENT_STRCAT_INTEGER_OVERFLOW = 80200,
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BIONIC_EVENT_STRNCAT_INTEGER_OVERFLOW = 80205,
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BIONIC_EVENT_RESOLVER_OLD_RESPONSE = 80300,
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BIONIC_EVENT_RESOLVER_WRONG_SERVER = 80305,
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BIONIC_EVENT_RESOLVER_WRONG_QUERY = 80310,
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};
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enum {
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ANDROID_LOG_UNKNOWN = 0,
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ANDROID_LOG_DEFAULT, /* only for SetMinPriority() */
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ANDROID_LOG_VERBOSE,
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ANDROID_LOG_DEBUG,
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ANDROID_LOG_INFO,
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ANDROID_LOG_WARN,
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ANDROID_LOG_ERROR,
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ANDROID_LOG_FATAL,
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ANDROID_LOG_SILENT, /* only for SetMinPriority(); must be last */
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};
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struct abort_msg_t {
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size_t size;
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char msg[0];
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};
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__LIBC_HIDDEN__ void __libc_set_abort_message(const char* msg);
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//
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// Formats a message to the log (priority 'fatal'), then aborts.
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//
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__LIBC_HIDDEN__ __noreturn void __libc_fatal(const char* format, ...)
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__attribute__((__format__(printf, 1, 2)));
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//
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// Formatting routines for the C library's internal debugging.
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// Unlike the usual alternatives, these don't allocate.
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//
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__LIBC_HIDDEN__ int __libc_format_buffer(char* buffer, size_t buffer_size, const char* format, ...)
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__attribute__((__format__(printf, 3, 4)));
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__LIBC_HIDDEN__ int __libc_format_fd(int fd, const char* format, ...)
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__attribute__((__format__(printf, 2, 3)));
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__LIBC_HIDDEN__ int __libc_format_log(int priority, const char* tag, const char* format, ...)
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__attribute__((__format__(printf, 3, 4)));
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__LIBC_HIDDEN__ int __libc_format_log_va_list(int priority, const char* tag, const char* format,
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va_list ap);
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//
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// Event logging.
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//
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__LIBC_HIDDEN__ void __libc_android_log_event_int(int32_t tag, int value);
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__LIBC_HIDDEN__ void __libc_android_log_event_uid(int32_t tag);
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__LIBC_HIDDEN__ __noreturn void __fortify_chk_fail(const char* msg, uint32_t event_tag);
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__END_DECLS
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#endif
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