diff options
Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/tools/linux/md2core/minidump-2-core.cc')
-rw-r--r-- | toolkit/crashreporter/google-breakpad/src/tools/linux/md2core/minidump-2-core.cc | 1276 |
1 files changed, 1276 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/tools/linux/md2core/minidump-2-core.cc b/toolkit/crashreporter/google-breakpad/src/tools/linux/md2core/minidump-2-core.cc new file mode 100644 index 000000000..6f637845e --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/tools/linux/md2core/minidump-2-core.cc @@ -0,0 +1,1276 @@ +// Copyright (c) 2009, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Converts a minidump file to a core file which gdb can read. +// Large parts lifted from the userspace core dumper: +// http://code.google.com/p/google-coredumper/ +// +// Usage: minidump-2-core [-v] 1234.dmp > core + +#include <elf.h> +#include <errno.h> +#include <link.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/user.h> +#include <unistd.h> + +#include <map> +#include <string> +#include <vector> + +#include "common/linux/memory_mapped_file.h" +#include "common/minidump_type_helper.h" +#include "common/scoped_ptr.h" +#include "common/using_std_string.h" +#include "google_breakpad/common/breakpad_types.h" +#include "google_breakpad/common/minidump_format.h" +#include "third_party/lss/linux_syscall_support.h" +#include "tools/linux/md2core/minidump_memory_range.h" + +#if __WORDSIZE == 64 + #define ELF_CLASS ELFCLASS64 +#else + #define ELF_CLASS ELFCLASS32 +#endif +#define Ehdr ElfW(Ehdr) +#define Phdr ElfW(Phdr) +#define Shdr ElfW(Shdr) +#define Nhdr ElfW(Nhdr) +#define auxv_t ElfW(auxv_t) + + +#if defined(__x86_64__) + #define ELF_ARCH EM_X86_64 +#elif defined(__i386__) + #define ELF_ARCH EM_386 +#elif defined(__arm__) + #define ELF_ARCH EM_ARM +#elif defined(__mips__) + #define ELF_ARCH EM_MIPS +#elif defined(__aarch64__) + #define ELF_ARCH EM_AARCH64 +#endif + +#if defined(__arm__) +// GLibc/ARM and Android/ARM both use 'user_regs' for the structure type +// containing core registers, while they use 'user_regs_struct' on other +// architectures. This file-local typedef simplifies the source code. +typedef user_regs user_regs_struct; +#elif defined (__mips__) +// This file-local typedef simplifies the source code. +typedef gregset_t user_regs_struct; +#endif + +using google_breakpad::MDTypeHelper; +using google_breakpad::MemoryMappedFile; +using google_breakpad::MinidumpMemoryRange; + +typedef MDTypeHelper<sizeof(ElfW(Addr))>::MDRawDebug MDRawDebug; +typedef MDTypeHelper<sizeof(ElfW(Addr))>::MDRawLinkMap MDRawLinkMap; + +static const MDRVA kInvalidMDRVA = static_cast<MDRVA>(-1); +static bool verbose; +static string g_custom_so_basedir; + +static int usage(const char* argv0) { + fprintf(stderr, "Usage: %s [-v] <minidump file>\n", argv0); + return 1; +} + +// Write all of the given buffer, handling short writes and EINTR. Return true +// iff successful. +static bool +writea(int fd, const void* idata, size_t length) { + const uint8_t* data = (const uint8_t*) idata; + + size_t done = 0; + while (done < length) { + ssize_t r; + do { + r = write(fd, data + done, length - done); + } while (r == -1 && errno == EINTR); + + if (r < 1) + return false; + done += r; + } + + return true; +} + +/* Dynamically determines the byte sex of the system. Returns non-zero + * for big-endian machines. + */ +static inline int sex() { + int probe = 1; + return !*(char *)&probe; +} + +typedef struct elf_timeval { /* Time value with microsecond resolution */ + long tv_sec; /* Seconds */ + long tv_usec; /* Microseconds */ +} elf_timeval; + +typedef struct _elf_siginfo { /* Information about signal (unused) */ + int32_t si_signo; /* Signal number */ + int32_t si_code; /* Extra code */ + int32_t si_errno; /* Errno */ +} _elf_siginfo; + +typedef struct prstatus { /* Information about thread; includes CPU reg*/ + _elf_siginfo pr_info; /* Info associated with signal */ + uint16_t pr_cursig; /* Current signal */ + unsigned long pr_sigpend; /* Set of pending signals */ + unsigned long pr_sighold; /* Set of held signals */ + pid_t pr_pid; /* Process ID */ + pid_t pr_ppid; /* Parent's process ID */ + pid_t pr_pgrp; /* Group ID */ + pid_t pr_sid; /* Session ID */ + elf_timeval pr_utime; /* User time */ + elf_timeval pr_stime; /* System time */ + elf_timeval pr_cutime; /* Cumulative user time */ + elf_timeval pr_cstime; /* Cumulative system time */ + user_regs_struct pr_reg; /* CPU registers */ + uint32_t pr_fpvalid; /* True if math co-processor being used */ +} prstatus; + +typedef struct prpsinfo { /* Information about process */ + unsigned char pr_state; /* Numeric process state */ + char pr_sname; /* Char for pr_state */ + unsigned char pr_zomb; /* Zombie */ + signed char pr_nice; /* Nice val */ + unsigned long pr_flag; /* Flags */ +#if defined(__x86_64__) || defined(__mips__) + uint32_t pr_uid; /* User ID */ + uint32_t pr_gid; /* Group ID */ +#else + uint16_t pr_uid; /* User ID */ + uint16_t pr_gid; /* Group ID */ +#endif + pid_t pr_pid; /* Process ID */ + pid_t pr_ppid; /* Parent's process ID */ + pid_t pr_pgrp; /* Group ID */ + pid_t pr_sid; /* Session ID */ + char pr_fname[16]; /* Filename of executable */ + char pr_psargs[80]; /* Initial part of arg list */ +} prpsinfo; + +// We parse the minidump file and keep the parsed information in this structure +struct CrashedProcess { + CrashedProcess() + : crashing_tid(-1), + auxv(NULL), + auxv_length(0) { + memset(&prps, 0, sizeof(prps)); + prps.pr_sname = 'R'; + memset(&debug, 0, sizeof(debug)); + } + + struct Mapping { + Mapping() + : permissions(0xFFFFFFFF), + start_address(0), + end_address(0), + offset(0) { + } + + uint32_t permissions; + uint64_t start_address, end_address, offset; + string filename; + string data; + }; + std::map<uint64_t, Mapping> mappings; + + pid_t crashing_tid; + int fatal_signal; + + struct Thread { + pid_t tid; +#if defined(__mips__) + mcontext_t mcontext; +#else + user_regs_struct regs; +#endif +#if defined(__i386__) || defined(__x86_64__) + user_fpregs_struct fpregs; +#endif +#if defined(__i386__) + user_fpxregs_struct fpxregs; +#endif +#if defined(__aarch64__) + user_fpsimd_struct fpregs; +#endif + uintptr_t stack_addr; + const uint8_t* stack; + size_t stack_length; + }; + std::vector<Thread> threads; + + const uint8_t* auxv; + size_t auxv_length; + + prpsinfo prps; + + std::map<uintptr_t, string> signatures; + + string dynamic_data; + MDRawDebug debug; + std::vector<MDRawLinkMap> link_map; +}; + +#if defined(__i386__) +static uint32_t +U32(const uint8_t* data) { + uint32_t v; + memcpy(&v, data, sizeof(v)); + return v; +} + +static uint16_t +U16(const uint8_t* data) { + uint16_t v; + memcpy(&v, data, sizeof(v)); + return v; +} + +static void +ParseThreadRegisters(CrashedProcess::Thread* thread, + const MinidumpMemoryRange& range) { + const MDRawContextX86* rawregs = range.GetData<MDRawContextX86>(0); + + thread->regs.ebx = rawregs->ebx; + thread->regs.ecx = rawregs->ecx; + thread->regs.edx = rawregs->edx; + thread->regs.esi = rawregs->esi; + thread->regs.edi = rawregs->edi; + thread->regs.ebp = rawregs->ebp; + thread->regs.eax = rawregs->eax; + thread->regs.xds = rawregs->ds; + thread->regs.xes = rawregs->es; + thread->regs.xfs = rawregs->fs; + thread->regs.xgs = rawregs->gs; + thread->regs.orig_eax = rawregs->eax; + thread->regs.eip = rawregs->eip; + thread->regs.xcs = rawregs->cs; + thread->regs.eflags = rawregs->eflags; + thread->regs.esp = rawregs->esp; + thread->regs.xss = rawregs->ss; + + thread->fpregs.cwd = rawregs->float_save.control_word; + thread->fpregs.swd = rawregs->float_save.status_word; + thread->fpregs.twd = rawregs->float_save.tag_word; + thread->fpregs.fip = rawregs->float_save.error_offset; + thread->fpregs.fcs = rawregs->float_save.error_selector; + thread->fpregs.foo = rawregs->float_save.data_offset; + thread->fpregs.fos = rawregs->float_save.data_selector; + memcpy(thread->fpregs.st_space, rawregs->float_save.register_area, + 10 * 8); + + thread->fpxregs.cwd = rawregs->float_save.control_word; + thread->fpxregs.swd = rawregs->float_save.status_word; + thread->fpxregs.twd = rawregs->float_save.tag_word; + thread->fpxregs.fop = U16(rawregs->extended_registers + 6); + thread->fpxregs.fip = U16(rawregs->extended_registers + 8); + thread->fpxregs.fcs = U16(rawregs->extended_registers + 12); + thread->fpxregs.foo = U16(rawregs->extended_registers + 16); + thread->fpxregs.fos = U16(rawregs->extended_registers + 20); + thread->fpxregs.mxcsr = U32(rawregs->extended_registers + 24); + memcpy(thread->fpxregs.st_space, rawregs->extended_registers + 32, 128); + memcpy(thread->fpxregs.xmm_space, rawregs->extended_registers + 160, 128); +} +#elif defined(__x86_64__) +static void +ParseThreadRegisters(CrashedProcess::Thread* thread, + const MinidumpMemoryRange& range) { + const MDRawContextAMD64* rawregs = range.GetData<MDRawContextAMD64>(0); + + thread->regs.r15 = rawregs->r15; + thread->regs.r14 = rawregs->r14; + thread->regs.r13 = rawregs->r13; + thread->regs.r12 = rawregs->r12; + thread->regs.rbp = rawregs->rbp; + thread->regs.rbx = rawregs->rbx; + thread->regs.r11 = rawregs->r11; + thread->regs.r10 = rawregs->r10; + thread->regs.r9 = rawregs->r9; + thread->regs.r8 = rawregs->r8; + thread->regs.rax = rawregs->rax; + thread->regs.rcx = rawregs->rcx; + thread->regs.rdx = rawregs->rdx; + thread->regs.rsi = rawregs->rsi; + thread->regs.rdi = rawregs->rdi; + thread->regs.orig_rax = rawregs->rax; + thread->regs.rip = rawregs->rip; + thread->regs.cs = rawregs->cs; + thread->regs.eflags = rawregs->eflags; + thread->regs.rsp = rawregs->rsp; + thread->regs.ss = rawregs->ss; + thread->regs.fs_base = 0; + thread->regs.gs_base = 0; + thread->regs.ds = rawregs->ds; + thread->regs.es = rawregs->es; + thread->regs.fs = rawregs->fs; + thread->regs.gs = rawregs->gs; + + thread->fpregs.cwd = rawregs->flt_save.control_word; + thread->fpregs.swd = rawregs->flt_save.status_word; + thread->fpregs.ftw = rawregs->flt_save.tag_word; + thread->fpregs.fop = rawregs->flt_save.error_opcode; + thread->fpregs.rip = rawregs->flt_save.error_offset; + thread->fpregs.rdp = rawregs->flt_save.data_offset; + thread->fpregs.mxcsr = rawregs->flt_save.mx_csr; + thread->fpregs.mxcr_mask = rawregs->flt_save.mx_csr_mask; + memcpy(thread->fpregs.st_space, rawregs->flt_save.float_registers, 8 * 16); + memcpy(thread->fpregs.xmm_space, rawregs->flt_save.xmm_registers, 16 * 16); +} +#elif defined(__arm__) +static void +ParseThreadRegisters(CrashedProcess::Thread* thread, + const MinidumpMemoryRange& range) { + const MDRawContextARM* rawregs = range.GetData<MDRawContextARM>(0); + + thread->regs.uregs[0] = rawregs->iregs[0]; + thread->regs.uregs[1] = rawregs->iregs[1]; + thread->regs.uregs[2] = rawregs->iregs[2]; + thread->regs.uregs[3] = rawregs->iregs[3]; + thread->regs.uregs[4] = rawregs->iregs[4]; + thread->regs.uregs[5] = rawregs->iregs[5]; + thread->regs.uregs[6] = rawregs->iregs[6]; + thread->regs.uregs[7] = rawregs->iregs[7]; + thread->regs.uregs[8] = rawregs->iregs[8]; + thread->regs.uregs[9] = rawregs->iregs[9]; + thread->regs.uregs[10] = rawregs->iregs[10]; + thread->regs.uregs[11] = rawregs->iregs[11]; + thread->regs.uregs[12] = rawregs->iregs[12]; + thread->regs.uregs[13] = rawregs->iregs[13]; + thread->regs.uregs[14] = rawregs->iregs[14]; + thread->regs.uregs[15] = rawregs->iregs[15]; + + thread->regs.uregs[16] = rawregs->cpsr; + thread->regs.uregs[17] = 0; // what is ORIG_r0 exactly? +} +#elif defined(__aarch64__) +static void +ParseThreadRegisters(CrashedProcess::Thread* thread, + const MinidumpMemoryRange& range) { + const MDRawContextARM64* rawregs = range.GetData<MDRawContextARM64>(0); + + for (int i = 0; i < 31; ++i) + thread->regs.regs[i] = rawregs->iregs[i]; + thread->regs.sp = rawregs->iregs[MD_CONTEXT_ARM64_REG_SP]; + thread->regs.pc = rawregs->iregs[MD_CONTEXT_ARM64_REG_PC]; + thread->regs.pstate = rawregs->cpsr; + + memcpy(thread->fpregs.vregs, rawregs->float_save.regs, 8 * 32); + thread->fpregs.fpsr = rawregs->float_save.fpsr; + thread->fpregs.fpcr = rawregs->float_save.fpcr; +} +#elif defined(__mips__) +static void +ParseThreadRegisters(CrashedProcess::Thread* thread, + const MinidumpMemoryRange& range) { + const MDRawContextMIPS* rawregs = range.GetData<MDRawContextMIPS>(0); + + for (int i = 0; i < MD_CONTEXT_MIPS_GPR_COUNT; ++i) + thread->mcontext.gregs[i] = rawregs->iregs[i]; + + thread->mcontext.pc = rawregs->epc; + + thread->mcontext.mdlo = rawregs->mdlo; + thread->mcontext.mdhi = rawregs->mdhi; + + thread->mcontext.hi1 = rawregs->hi[0]; + thread->mcontext.lo1 = rawregs->lo[0]; + thread->mcontext.hi2 = rawregs->hi[1]; + thread->mcontext.lo2 = rawregs->lo[1]; + thread->mcontext.hi3 = rawregs->hi[2]; + thread->mcontext.lo3 = rawregs->lo[2]; + + for (int i = 0; i < MD_FLOATINGSAVEAREA_MIPS_FPR_COUNT; ++i) { + thread->mcontext.fpregs.fp_r.fp_fregs[i]._fp_fregs = + rawregs->float_save.regs[i]; + } + + thread->mcontext.fpc_csr = rawregs->float_save.fpcsr; +#if _MIPS_SIM == _ABIO32 + thread->mcontext.fpc_eir = rawregs->float_save.fir; +#endif +} +#else +#error "This code has not been ported to your platform yet" +#endif + +static void +ParseThreadList(CrashedProcess* crashinfo, const MinidumpMemoryRange& range, + const MinidumpMemoryRange& full_file) { + const uint32_t num_threads = *range.GetData<uint32_t>(0); + if (verbose) { + fprintf(stderr, + "MD_THREAD_LIST_STREAM:\n" + "Found %d threads\n" + "\n\n", + num_threads); + } + for (unsigned i = 0; i < num_threads; ++i) { + CrashedProcess::Thread thread; + memset(&thread, 0, sizeof(thread)); + const MDRawThread* rawthread = + range.GetArrayElement<MDRawThread>(sizeof(uint32_t), i); + thread.tid = rawthread->thread_id; + thread.stack_addr = rawthread->stack.start_of_memory_range; + MinidumpMemoryRange stack_range = + full_file.Subrange(rawthread->stack.memory); + thread.stack = stack_range.data(); + thread.stack_length = rawthread->stack.memory.data_size; + + ParseThreadRegisters(&thread, + full_file.Subrange(rawthread->thread_context)); + + crashinfo->threads.push_back(thread); + } +} + +static void +ParseSystemInfo(CrashedProcess* crashinfo, const MinidumpMemoryRange& range, + const MinidumpMemoryRange& full_file) { + const MDRawSystemInfo* sysinfo = range.GetData<MDRawSystemInfo>(0); + if (!sysinfo) { + fprintf(stderr, "Failed to access MD_SYSTEM_INFO_STREAM\n"); + _exit(1); + } +#if defined(__i386__) + if (sysinfo->processor_architecture != MD_CPU_ARCHITECTURE_X86) { + fprintf(stderr, + "This version of minidump-2-core only supports x86 (32bit)%s.\n", + sysinfo->processor_architecture == MD_CPU_ARCHITECTURE_AMD64 ? + ",\nbut the minidump file is from a 64bit machine" : ""); + _exit(1); + } +#elif defined(__x86_64__) + if (sysinfo->processor_architecture != MD_CPU_ARCHITECTURE_AMD64) { + fprintf(stderr, + "This version of minidump-2-core only supports x86 (64bit)%s.\n", + sysinfo->processor_architecture == MD_CPU_ARCHITECTURE_X86 ? + ",\nbut the minidump file is from a 32bit machine" : ""); + _exit(1); + } +#elif defined(__arm__) + if (sysinfo->processor_architecture != MD_CPU_ARCHITECTURE_ARM) { + fprintf(stderr, + "This version of minidump-2-core only supports ARM (32bit).\n"); + _exit(1); + } +#elif defined(__aarch64__) + if (sysinfo->processor_architecture != MD_CPU_ARCHITECTURE_ARM64) { + fprintf(stderr, + "This version of minidump-2-core only supports ARM (64bit).\n"); + _exit(1); + } +#elif defined(__mips__) +# if _MIPS_SIM == _ABIO32 + if (sysinfo->processor_architecture != MD_CPU_ARCHITECTURE_MIPS) { + fprintf(stderr, + "This version of minidump-2-core only supports mips o32 (32bit).\n"); + _exit(1); + } +# elif _MIPS_SIM == _ABI64 + if (sysinfo->processor_architecture != MD_CPU_ARCHITECTURE_MIPS64) { + fprintf(stderr, + "This version of minidump-2-core only supports mips n64 (64bit).\n"); + _exit(1); + } +# else +# error "This mips ABI is currently not supported (n32)" +# endif +#else +#error "This code has not been ported to your platform yet" +#endif + if (!strstr(full_file.GetAsciiMDString(sysinfo->csd_version_rva).c_str(), + "Linux") && + sysinfo->platform_id != MD_OS_NACL) { + fprintf(stderr, "This minidump was not generated by Linux or NaCl.\n"); + _exit(1); + } + + if (verbose) { + fprintf(stderr, + "MD_SYSTEM_INFO_STREAM:\n" + "Architecture: %s\n" + "Number of processors: %d\n" + "Processor level: %d\n" + "Processor model: %d\n" + "Processor stepping: %d\n", + sysinfo->processor_architecture == MD_CPU_ARCHITECTURE_X86 + ? "i386" + : sysinfo->processor_architecture == MD_CPU_ARCHITECTURE_AMD64 + ? "x86-64" + : sysinfo->processor_architecture == MD_CPU_ARCHITECTURE_ARM + ? "ARM" + : sysinfo->processor_architecture == MD_CPU_ARCHITECTURE_MIPS + ? "MIPS" + : sysinfo->processor_architecture == MD_CPU_ARCHITECTURE_MIPS64 + ? "MIPS64" + : "???", + sysinfo->number_of_processors, + sysinfo->processor_level, + sysinfo->processor_revision >> 8, + sysinfo->processor_revision & 0xFF); + if (sysinfo->processor_architecture == MD_CPU_ARCHITECTURE_X86 || + sysinfo->processor_architecture == MD_CPU_ARCHITECTURE_AMD64) { + fputs("Vendor id: ", stderr); + const char *nul = + (const char *)memchr(sysinfo->cpu.x86_cpu_info.vendor_id, 0, + sizeof(sysinfo->cpu.x86_cpu_info.vendor_id)); + fwrite(sysinfo->cpu.x86_cpu_info.vendor_id, + nul ? nul - (const char *)&sysinfo->cpu.x86_cpu_info.vendor_id[0] + : sizeof(sysinfo->cpu.x86_cpu_info.vendor_id), 1, stderr); + fputs("\n", stderr); + } + fprintf(stderr, "OS: %s\n", + full_file.GetAsciiMDString(sysinfo->csd_version_rva).c_str()); + fputs("\n\n", stderr); + } +} + +static void +ParseCPUInfo(CrashedProcess* crashinfo, const MinidumpMemoryRange& range) { + if (verbose) { + fputs("MD_LINUX_CPU_INFO:\n", stderr); + fwrite(range.data(), range.length(), 1, stderr); + fputs("\n\n\n", stderr); + } +} + +static void +ParseProcessStatus(CrashedProcess* crashinfo, + const MinidumpMemoryRange& range) { + if (verbose) { + fputs("MD_LINUX_PROC_STATUS:\n", stderr); + fwrite(range.data(), range.length(), 1, stderr); + fputs("\n\n", stderr); + } +} + +static void +ParseLSBRelease(CrashedProcess* crashinfo, const MinidumpMemoryRange& range) { + if (verbose) { + fputs("MD_LINUX_LSB_RELEASE:\n", stderr); + fwrite(range.data(), range.length(), 1, stderr); + fputs("\n\n", stderr); + } +} + +static void +ParseMaps(CrashedProcess* crashinfo, const MinidumpMemoryRange& range) { + if (verbose) { + fputs("MD_LINUX_MAPS:\n", stderr); + fwrite(range.data(), range.length(), 1, stderr); + } + for (const uint8_t* ptr = range.data(); + ptr < range.data() + range.length();) { + const uint8_t* eol = (uint8_t*)memchr(ptr, '\n', + range.data() + range.length() - ptr); + string line((const char*)ptr, + eol ? eol - ptr : range.data() + range.length() - ptr); + ptr = eol ? eol + 1 : range.data() + range.length(); + unsigned long long start, stop, offset; + char* permissions = NULL; + char* filename = NULL; + sscanf(line.c_str(), "%llx-%llx %m[-rwxp] %llx %*[:0-9a-f] %*d %ms", + &start, &stop, &permissions, &offset, &filename); + if (filename && *filename == '/') { + CrashedProcess::Mapping mapping; + mapping.permissions = 0; + if (strchr(permissions, 'r')) { + mapping.permissions |= PF_R; + } + if (strchr(permissions, 'w')) { + mapping.permissions |= PF_W; + } + if (strchr(permissions, 'x')) { + mapping.permissions |= PF_X; + } + mapping.start_address = start; + mapping.end_address = stop; + mapping.offset = offset; + if (filename) { + mapping.filename = filename; + } + crashinfo->mappings[mapping.start_address] = mapping; + } + free(permissions); + free(filename); + } + if (verbose) { + fputs("\n\n\n", stderr); + } +} + +static void +ParseEnvironment(CrashedProcess* crashinfo, const MinidumpMemoryRange& range) { + if (verbose) { + fputs("MD_LINUX_ENVIRON:\n", stderr); + char* env = new char[range.length()]; + memcpy(env, range.data(), range.length()); + int nul_count = 0; + for (char *ptr = env;;) { + ptr = (char *)memchr(ptr, '\000', range.length() - (ptr - env)); + if (!ptr) { + break; + } + if (ptr > env && ptr[-1] == '\n') { + if (++nul_count > 5) { + // Some versions of Chrome try to rewrite the process' command line + // in a way that causes the environment to be corrupted. Afterwards, + // part of the environment will contain the trailing bit of the + // command line. The rest of the environment will be filled with + // NUL bytes. + // We detect this corruption by counting the number of consecutive + // NUL bytes. Normally, we would not expect any consecutive NUL + // bytes. But we are conservative and only suppress printing of + // the environment if we see at least five consecutive NULs. + fputs("Environment has been corrupted; no data available", stderr); + goto env_corrupted; + } + } else { + nul_count = 0; + } + *ptr = '\n'; + } + fwrite(env, range.length(), 1, stderr); + env_corrupted: + delete[] env; + fputs("\n\n\n", stderr); + } +} + +static void +ParseAuxVector(CrashedProcess* crashinfo, const MinidumpMemoryRange& range) { + // Some versions of Chrome erroneously used the MD_LINUX_AUXV stream value + // when dumping /proc/$x/maps + if (range.length() > 17) { + // The AUXV vector contains binary data, whereas the maps always begin + // with an 8+ digit hex address followed by a hyphen and another 8+ digit + // address. + char addresses[18]; + memcpy(addresses, range.data(), 17); + addresses[17] = '\000'; + if (strspn(addresses, "0123456789abcdef-") == 17) { + ParseMaps(crashinfo, range); + return; + } + } + + crashinfo->auxv = range.data(); + crashinfo->auxv_length = range.length(); +} + +static void +ParseCmdLine(CrashedProcess* crashinfo, const MinidumpMemoryRange& range) { + // The command line is supposed to use NUL bytes to separate arguments. + // As Chrome rewrites its own command line and (incorrectly) substitutes + // spaces, this is often not the case in our minidump files. + const char* cmdline = (const char*) range.data(); + if (verbose) { + fputs("MD_LINUX_CMD_LINE:\n", stderr); + unsigned i = 0; + for (; i < range.length() && cmdline[i] && cmdline[i] != ' '; ++i) { } + fputs("argv[0] = \"", stderr); + fwrite(cmdline, i, 1, stderr); + fputs("\"\n", stderr); + for (unsigned j = ++i, argc = 1; j < range.length(); ++j) { + if (!cmdline[j] || cmdline[j] == ' ') { + fprintf(stderr, "argv[%d] = \"", argc++); + fwrite(cmdline + i, j - i, 1, stderr); + fputs("\"\n", stderr); + i = j + 1; + } + } + fputs("\n\n", stderr); + } + + const char *binary_name = cmdline; + for (size_t i = 0; i < range.length(); ++i) { + if (cmdline[i] == '/') { + binary_name = cmdline + i + 1; + } else if (cmdline[i] == 0 || cmdline[i] == ' ') { + static const size_t fname_len = sizeof(crashinfo->prps.pr_fname) - 1; + static const size_t args_len = sizeof(crashinfo->prps.pr_psargs) - 1; + memset(crashinfo->prps.pr_fname, 0, fname_len + 1); + memset(crashinfo->prps.pr_psargs, 0, args_len + 1); + unsigned len = cmdline + i - binary_name; + memcpy(crashinfo->prps.pr_fname, binary_name, + len > fname_len ? fname_len : len); + + len = range.length() > args_len ? args_len : range.length(); + memcpy(crashinfo->prps.pr_psargs, cmdline, len); + for (unsigned j = 0; j < len; ++j) { + if (crashinfo->prps.pr_psargs[j] == 0) + crashinfo->prps.pr_psargs[j] = ' '; + } + break; + } + } +} + +static void +ParseDSODebugInfo(CrashedProcess* crashinfo, const MinidumpMemoryRange& range, + const MinidumpMemoryRange& full_file) { + const MDRawDebug* debug = range.GetData<MDRawDebug>(0); + if (!debug) { + return; + } + if (verbose) { + fprintf(stderr, + "MD_LINUX_DSO_DEBUG:\n" + "Version: %d\n" + "Number of DSOs: %d\n" + "Brk handler: 0x%" PRIx64 "\n" + "Dynamic loader at: 0x%" PRIx64 "\n" + "_DYNAMIC: 0x%" PRIx64 "\n", + debug->version, + debug->dso_count, + static_cast<uint64_t>(debug->brk), + static_cast<uint64_t>(debug->ldbase), + static_cast<uint64_t>(debug->dynamic)); + } + crashinfo->debug = *debug; + if (range.length() > sizeof(MDRawDebug)) { + char* dynamic_data = (char*)range.data() + sizeof(MDRawDebug); + crashinfo->dynamic_data.assign(dynamic_data, + range.length() - sizeof(MDRawDebug)); + } + if (debug->map != kInvalidMDRVA) { + for (unsigned int i = 0; i < debug->dso_count; ++i) { + const MDRawLinkMap* link_map = + full_file.GetArrayElement<MDRawLinkMap>(debug->map, i); + if (link_map) { + if (verbose) { + fprintf(stderr, + "#%03d: %" PRIx64 ", %" PRIx64 ", \"%s\"\n", + i, static_cast<uint64_t>(link_map->addr), + static_cast<uint64_t>(link_map->ld), + full_file.GetAsciiMDString(link_map->name).c_str()); + } + crashinfo->link_map.push_back(*link_map); + } + } + } + if (verbose) { + fputs("\n\n", stderr); + } +} + +static void +ParseExceptionStream(CrashedProcess* crashinfo, + const MinidumpMemoryRange& range) { + const MDRawExceptionStream* exp = range.GetData<MDRawExceptionStream>(0); + crashinfo->crashing_tid = exp->thread_id; + crashinfo->fatal_signal = (int) exp->exception_record.exception_code; +} + +static bool +WriteThread(const CrashedProcess::Thread& thread, int fatal_signal) { + struct prstatus pr; + memset(&pr, 0, sizeof(pr)); + + pr.pr_info.si_signo = fatal_signal; + pr.pr_cursig = fatal_signal; + pr.pr_pid = thread.tid; +#if defined(__mips__) + memcpy(&pr.pr_reg, &thread.mcontext.gregs, sizeof(user_regs_struct)); +#else + memcpy(&pr.pr_reg, &thread.regs, sizeof(user_regs_struct)); +#endif + + Nhdr nhdr; + memset(&nhdr, 0, sizeof(nhdr)); + nhdr.n_namesz = 5; + nhdr.n_descsz = sizeof(struct prstatus); + nhdr.n_type = NT_PRSTATUS; + if (!writea(1, &nhdr, sizeof(nhdr)) || + !writea(1, "CORE\0\0\0\0", 8) || + !writea(1, &pr, sizeof(struct prstatus))) { + return false; + } + +#if defined(__i386__) || defined(__x86_64__) + nhdr.n_descsz = sizeof(user_fpregs_struct); + nhdr.n_type = NT_FPREGSET; + if (!writea(1, &nhdr, sizeof(nhdr)) || + !writea(1, "CORE\0\0\0\0", 8) || + !writea(1, &thread.fpregs, sizeof(user_fpregs_struct))) { + return false; + } +#endif + +#if defined(__i386__) + nhdr.n_descsz = sizeof(user_fpxregs_struct); + nhdr.n_type = NT_PRXFPREG; + if (!writea(1, &nhdr, sizeof(nhdr)) || + !writea(1, "LINUX\0\0\0", 8) || + !writea(1, &thread.fpxregs, sizeof(user_fpxregs_struct))) { + return false; + } +#endif + + return true; +} + +static void +ParseModuleStream(CrashedProcess* crashinfo, const MinidumpMemoryRange& range, + const MinidumpMemoryRange& full_file) { + if (verbose) { + fputs("MD_MODULE_LIST_STREAM:\n", stderr); + } + const uint32_t num_mappings = *range.GetData<uint32_t>(0); + for (unsigned i = 0; i < num_mappings; ++i) { + CrashedProcess::Mapping mapping; + const MDRawModule* rawmodule = reinterpret_cast<const MDRawModule*>( + range.GetArrayElement(sizeof(uint32_t), MD_MODULE_SIZE, i)); + mapping.start_address = rawmodule->base_of_image; + mapping.end_address = rawmodule->size_of_image + rawmodule->base_of_image; + + if (crashinfo->mappings.find(mapping.start_address) == + crashinfo->mappings.end()) { + // We prefer data from MD_LINUX_MAPS over MD_MODULE_LIST_STREAM, as + // the former is a strict superset of the latter. + crashinfo->mappings[mapping.start_address] = mapping; + } + + const MDCVInfoPDB70* record = reinterpret_cast<const MDCVInfoPDB70*>( + full_file.GetData(rawmodule->cv_record.rva, MDCVInfoPDB70_minsize)); + char guid[40]; + sprintf(guid, "%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X", + record->signature.data1, record->signature.data2, + record->signature.data3, + record->signature.data4[0], record->signature.data4[1], + record->signature.data4[2], record->signature.data4[3], + record->signature.data4[4], record->signature.data4[5], + record->signature.data4[6], record->signature.data4[7]); + string filename = + full_file.GetAsciiMDString(rawmodule->module_name_rva); + size_t slash = filename.find_last_of('/'); + string basename = slash == string::npos ? + filename : filename.substr(slash + 1); + if (strcmp(guid, "00000000-0000-0000-0000-000000000000")) { + string prefix; + if (!g_custom_so_basedir.empty()) + prefix = g_custom_so_basedir; + else + prefix = string("/var/lib/breakpad/") + guid + "-" + basename; + + crashinfo->signatures[rawmodule->base_of_image] = prefix + basename; + } + + if (verbose) { + fprintf(stderr, "0x%08llX-0x%08llX, ChkSum: 0x%08X, GUID: %s, \"%s\"\n", + (unsigned long long)rawmodule->base_of_image, + (unsigned long long)rawmodule->base_of_image + + rawmodule->size_of_image, + rawmodule->checksum, guid, filename.c_str()); + } + } + if (verbose) { + fputs("\n\n", stderr); + } +} + +static void +AddDataToMapping(CrashedProcess* crashinfo, const string& data, + uintptr_t addr) { + for (std::map<uint64_t, CrashedProcess::Mapping>::iterator + iter = crashinfo->mappings.begin(); + iter != crashinfo->mappings.end(); + ++iter) { + if (addr >= iter->second.start_address && + addr < iter->second.end_address) { + CrashedProcess::Mapping mapping = iter->second; + if ((addr & ~4095) != iter->second.start_address) { + // If there are memory pages in the mapping prior to where the + // data starts, truncate the existing mapping so that it ends with + // the page immediately preceding the data region. + iter->second.end_address = addr & ~4095; + if (!mapping.filename.empty()) { + // "mapping" is a copy of "iter->second". We are splitting the + // existing mapping into two separate ones when we write the data + // to the core file. The first one does not have any associated + // data in the core file, the second one is backed by data that is + // included with the core file. + // If this mapping wasn't supposed to be anonymous, then we also + // have to update the file offset upon splitting the mapping. + mapping.offset += iter->second.end_address - + iter->second.start_address; + } + } + // Create a new mapping that contains the data contents. We often + // limit the amount of data that is actually written to the core + // file. But it is OK if the mapping itself extends past the end of + // the data. + mapping.start_address = addr & ~4095; + mapping.data.assign(addr & 4095, 0).append(data); + mapping.data.append(-mapping.data.size() & 4095, 0); + crashinfo->mappings[mapping.start_address] = mapping; + return; + } + } + // Didn't find a suitable existing mapping for the data. Create a new one. + CrashedProcess::Mapping mapping; + mapping.permissions = PF_R | PF_W; + mapping.start_address = addr & ~4095; + mapping.end_address = + (addr + data.size() + 4095) & ~4095; + mapping.data.assign(addr & 4095, 0).append(data); + mapping.data.append(-mapping.data.size() & 4095, 0); + crashinfo->mappings[mapping.start_address] = mapping; +} + +static void +AugmentMappings(CrashedProcess* crashinfo, + const MinidumpMemoryRange& full_file) { + // For each thread, find the memory mapping that matches the thread's stack. + // Then adjust the mapping to include the stack dump. + for (unsigned i = 0; i < crashinfo->threads.size(); ++i) { + const CrashedProcess::Thread& thread = crashinfo->threads[i]; + AddDataToMapping(crashinfo, + string((char *)thread.stack, thread.stack_length), + thread.stack_addr); + } + + // Create a new link map with information about DSOs. We move this map to + // the beginning of the address space, as this area should always be + // available. + static const uintptr_t start_addr = 4096; + string data; + struct r_debug debug = { 0 }; + debug.r_version = crashinfo->debug.version; + debug.r_brk = (ElfW(Addr))crashinfo->debug.brk; + debug.r_state = r_debug::RT_CONSISTENT; + debug.r_ldbase = (ElfW(Addr))crashinfo->debug.ldbase; + debug.r_map = crashinfo->debug.dso_count > 0 ? + (struct link_map*)(start_addr + sizeof(debug)) : 0; + data.append((char*)&debug, sizeof(debug)); + + struct link_map* prev = 0; + for (std::vector<MDRawLinkMap>::iterator iter = crashinfo->link_map.begin(); + iter != crashinfo->link_map.end(); + ++iter) { + struct link_map link_map = { 0 }; + link_map.l_addr = (ElfW(Addr))iter->addr; + link_map.l_name = (char*)(start_addr + data.size() + sizeof(link_map)); + link_map.l_ld = (ElfW(Dyn)*)iter->ld; + link_map.l_prev = prev; + prev = (struct link_map*)(start_addr + data.size()); + string filename = full_file.GetAsciiMDString(iter->name); + + // Look up signature for this filename. If available, change filename + // to point to GUID, instead. + std::map<uintptr_t, string>::const_iterator guid = + crashinfo->signatures.find((uintptr_t)iter->addr); + if (guid != crashinfo->signatures.end()) { + filename = guid->second; + } + + if (std::distance(iter, crashinfo->link_map.end()) == 1) { + link_map.l_next = 0; + } else { + link_map.l_next = (struct link_map*)(start_addr + data.size() + + sizeof(link_map) + + ((filename.size() + 8) & ~7)); + } + data.append((char*)&link_map, sizeof(link_map)); + data.append(filename); + data.append(8 - (filename.size() & 7), 0); + } + AddDataToMapping(crashinfo, data, start_addr); + + // Map the page containing the _DYNAMIC array + if (!crashinfo->dynamic_data.empty()) { + // Make _DYNAMIC DT_DEBUG entry point to our link map + for (int i = 0;; ++i) { + ElfW(Dyn) dyn; + if ((i+1)*sizeof(dyn) > crashinfo->dynamic_data.length()) { + no_dt_debug: + if (verbose) { + fprintf(stderr, "No DT_DEBUG entry found\n"); + } + return; + } + memcpy(&dyn, crashinfo->dynamic_data.c_str() + i*sizeof(dyn), + sizeof(dyn)); + if (dyn.d_tag == DT_DEBUG) { + crashinfo->dynamic_data.replace(i*sizeof(dyn) + + offsetof(ElfW(Dyn), d_un.d_ptr), + sizeof(start_addr), + (char*)&start_addr, sizeof(start_addr)); + break; + } else if (dyn.d_tag == DT_NULL) { + goto no_dt_debug; + } + } + AddDataToMapping(crashinfo, crashinfo->dynamic_data, + (uintptr_t)crashinfo->debug.dynamic); + } +} + +int +main(int argc, char** argv) { + int argi = 1; + while (argi < argc && argv[argi][0] == '-') { + if (!strcmp(argv[argi], "-v")) { + verbose = true; + } else if (!strcmp(argv[argi], "--sobasedir")) { + argi++; + if (argi >= argc) { + fprintf(stderr, "--sobasedir expects an argument."); + return usage(argv[0]); + } + + g_custom_so_basedir = argv[argi]; + } else { + return usage(argv[0]); + } + argi++; + } + + if (argc != argi + 1) + return usage(argv[0]); + + MemoryMappedFile mapped_file(argv[argi], 0); + if (!mapped_file.data()) { + fprintf(stderr, "Failed to mmap dump file\n"); + return 1; + } + + MinidumpMemoryRange dump(mapped_file.data(), mapped_file.size()); + + const MDRawHeader* header = dump.GetData<MDRawHeader>(0); + + CrashedProcess crashinfo; + + // Always check the system info first, as that allows us to tell whether + // this is a minidump file that is compatible with our converter. + bool ok = false; + for (unsigned i = 0; i < header->stream_count; ++i) { + const MDRawDirectory* dirent = + dump.GetArrayElement<MDRawDirectory>(header->stream_directory_rva, i); + switch (dirent->stream_type) { + case MD_SYSTEM_INFO_STREAM: + ParseSystemInfo(&crashinfo, dump.Subrange(dirent->location), dump); + ok = true; + break; + default: + break; + } + } + if (!ok) { + fprintf(stderr, "Cannot determine input file format.\n"); + _exit(1); + } + + for (unsigned i = 0; i < header->stream_count; ++i) { + const MDRawDirectory* dirent = + dump.GetArrayElement<MDRawDirectory>(header->stream_directory_rva, i); + switch (dirent->stream_type) { + case MD_THREAD_LIST_STREAM: + ParseThreadList(&crashinfo, dump.Subrange(dirent->location), dump); + break; + case MD_LINUX_CPU_INFO: + ParseCPUInfo(&crashinfo, dump.Subrange(dirent->location)); + break; + case MD_LINUX_PROC_STATUS: + ParseProcessStatus(&crashinfo, dump.Subrange(dirent->location)); + break; + case MD_LINUX_LSB_RELEASE: + ParseLSBRelease(&crashinfo, dump.Subrange(dirent->location)); + break; + case MD_LINUX_ENVIRON: + ParseEnvironment(&crashinfo, dump.Subrange(dirent->location)); + break; + case MD_LINUX_MAPS: + ParseMaps(&crashinfo, dump.Subrange(dirent->location)); + break; + case MD_LINUX_AUXV: + ParseAuxVector(&crashinfo, dump.Subrange(dirent->location)); + break; + case MD_LINUX_CMD_LINE: + ParseCmdLine(&crashinfo, dump.Subrange(dirent->location)); + break; + case MD_LINUX_DSO_DEBUG: + ParseDSODebugInfo(&crashinfo, dump.Subrange(dirent->location), dump); + break; + case MD_EXCEPTION_STREAM: + ParseExceptionStream(&crashinfo, dump.Subrange(dirent->location)); + break; + case MD_MODULE_LIST_STREAM: + ParseModuleStream(&crashinfo, dump.Subrange(dirent->location), dump); + break; + default: + if (verbose) + fprintf(stderr, "Skipping %x\n", dirent->stream_type); + } + } + + AugmentMappings(&crashinfo, dump); + + // Write the ELF header. The file will look like: + // ELF header + // Phdr for the PT_NOTE + // Phdr for each of the thread stacks + // PT_NOTE + // each of the thread stacks + Ehdr ehdr; + memset(&ehdr, 0, sizeof(Ehdr)); + ehdr.e_ident[0] = ELFMAG0; + ehdr.e_ident[1] = ELFMAG1; + ehdr.e_ident[2] = ELFMAG2; + ehdr.e_ident[3] = ELFMAG3; + ehdr.e_ident[4] = ELF_CLASS; + ehdr.e_ident[5] = sex() ? ELFDATA2MSB : ELFDATA2LSB; + ehdr.e_ident[6] = EV_CURRENT; + ehdr.e_type = ET_CORE; + ehdr.e_machine = ELF_ARCH; + ehdr.e_version = EV_CURRENT; + ehdr.e_phoff = sizeof(Ehdr); + ehdr.e_ehsize = sizeof(Ehdr); + ehdr.e_phentsize= sizeof(Phdr); + ehdr.e_phnum = 1 + // PT_NOTE + crashinfo.mappings.size(); // memory mappings + ehdr.e_shentsize= sizeof(Shdr); + if (!writea(1, &ehdr, sizeof(Ehdr))) + return 1; + + size_t offset = sizeof(Ehdr) + ehdr.e_phnum * sizeof(Phdr); + size_t filesz = sizeof(Nhdr) + 8 + sizeof(prpsinfo) + + // sizeof(Nhdr) + 8 + sizeof(user) + + sizeof(Nhdr) + 8 + crashinfo.auxv_length + + crashinfo.threads.size() * ( + (sizeof(Nhdr) + 8 + sizeof(prstatus)) +#if defined(__i386__) || defined(__x86_64__) + + sizeof(Nhdr) + 8 + sizeof(user_fpregs_struct) +#endif +#if defined(__i386__) + + sizeof(Nhdr) + 8 + sizeof(user_fpxregs_struct) +#endif + ); + + Phdr phdr; + memset(&phdr, 0, sizeof(Phdr)); + phdr.p_type = PT_NOTE; + phdr.p_offset = offset; + phdr.p_filesz = filesz; + if (!writea(1, &phdr, sizeof(phdr))) + return 1; + + phdr.p_type = PT_LOAD; + phdr.p_align = 4096; + size_t note_align = phdr.p_align - ((offset+filesz) % phdr.p_align); + if (note_align == phdr.p_align) + note_align = 0; + offset += note_align; + + for (std::map<uint64_t, CrashedProcess::Mapping>::const_iterator iter = + crashinfo.mappings.begin(); + iter != crashinfo.mappings.end(); ++iter) { + const CrashedProcess::Mapping& mapping = iter->second; + if (mapping.permissions == 0xFFFFFFFF) { + // This is a map that we found in MD_MODULE_LIST_STREAM (as opposed to + // MD_LINUX_MAPS). It lacks some of the information that we would like + // to include. + phdr.p_flags = PF_R; + } else { + phdr.p_flags = mapping.permissions; + } + phdr.p_vaddr = mapping.start_address; + phdr.p_memsz = mapping.end_address - mapping.start_address; + if (mapping.data.size()) { + offset += filesz; + filesz = mapping.data.size(); + phdr.p_filesz = mapping.data.size(); + phdr.p_offset = offset; + } else { + phdr.p_filesz = 0; + phdr.p_offset = 0; + } + if (!writea(1, &phdr, sizeof(phdr))) + return 1; + } + + Nhdr nhdr; + memset(&nhdr, 0, sizeof(nhdr)); + nhdr.n_namesz = 5; + nhdr.n_descsz = sizeof(prpsinfo); + nhdr.n_type = NT_PRPSINFO; + if (!writea(1, &nhdr, sizeof(nhdr)) || + !writea(1, "CORE\0\0\0\0", 8) || + !writea(1, &crashinfo.prps, sizeof(prpsinfo))) { + return 1; + } + + nhdr.n_descsz = crashinfo.auxv_length; + nhdr.n_type = NT_AUXV; + if (!writea(1, &nhdr, sizeof(nhdr)) || + !writea(1, "CORE\0\0\0\0", 8) || + !writea(1, crashinfo.auxv, crashinfo.auxv_length)) { + return 1; + } + + for (unsigned i = 0; i < crashinfo.threads.size(); ++i) { + if (crashinfo.threads[i].tid == crashinfo.crashing_tid) { + WriteThread(crashinfo.threads[i], crashinfo.fatal_signal); + break; + } + } + + for (unsigned i = 0; i < crashinfo.threads.size(); ++i) { + if (crashinfo.threads[i].tid != crashinfo.crashing_tid) + WriteThread(crashinfo.threads[i], 0); + } + + if (note_align) { + google_breakpad::scoped_array<char> scratch(new char[note_align]); + memset(scratch.get(), 0, note_align); + if (!writea(1, scratch.get(), note_align)) + return 1; + } + + for (std::map<uint64_t, CrashedProcess::Mapping>::const_iterator iter = + crashinfo.mappings.begin(); + iter != crashinfo.mappings.end(); ++iter) { + const CrashedProcess::Mapping& mapping = iter->second; + if (mapping.data.size()) { + if (!writea(1, mapping.data.c_str(), mapping.data.size())) + return 1; + } + } + + return 0; +} |