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Diffstat (limited to 'breakpad/linux/linux_dumper.h')
-rw-r--r-- | breakpad/linux/linux_dumper.h | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/breakpad/linux/linux_dumper.h b/breakpad/linux/linux_dumper.h deleted file mode 100644 index 9a81364..0000000 --- a/breakpad/linux/linux_dumper.h +++ /dev/null @@ -1,145 +0,0 @@ -// 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. - -#ifndef CLIENT_LINUX_HANDLER_LINUX_DUMPER_H_ -#define CLIENT_LINUX_HANDLER_LINUX_DUMPER_H_ - -#include <sys/types.h> -#include <elf.h> -#include <stdint.h> -#include <sys/user.h> -#include <linux/limits.h> - -#include "breakpad/linux/memory.h" - -namespace google_breakpad { - -typedef typeof(((struct user*) 0)->u_debugreg[0]) debugreg_t; - -// Typedef for our parsing of the auxv variables in /proc/pid/auxv. -#if defined(__i386) -typedef Elf32_auxv_t elf_aux_entry; -#elif defined(__x86_64__) -typedef Elf64_auxv_t elf_aux_entry; -#endif -// When we find the VDSO mapping in the process's address space, this -// is the name we use for it when writing it to the minidump. -// This should always be less than NAME_MAX! -const char kLinuxGateLibraryName[] = "linux-gate.so"; - -// We produce one of these structures for each thread in the crashed process. -struct ThreadInfo { - pid_t tgid; // thread group id - pid_t ppid; // parent process - - // Even on platforms where the stack grows down, the following will point to - // the smallest address in the stack. - const void* stack; // pointer to the stack area - size_t stack_len; // length of the stack to copy - - user_regs_struct regs; - user_fpregs_struct fpregs; -#if defined(__i386) - user_fpxregs_struct fpxregs; -#endif - -#if defined(__i386) || defined(__x86_64) - static const unsigned kNumDebugRegisters = 8; - debugreg_t dregs[8]; -#endif -}; - -// One of these is produced for each mapping in the process (i.e. line in -// /proc/$x/maps). -struct MappingInfo { - uintptr_t start_addr; - size_t size; - size_t offset; // offset into the backed file. - char name[NAME_MAX]; -}; - -class LinuxDumper { - public: - explicit LinuxDumper(pid_t pid); - - // Parse the data for |threads| and |mappings|. - bool Init(); - - // Suspend/resume all threads in the given process. - bool ThreadsSuspend(); - bool ThreadsResume(); - - // Read information about the given thread. Returns true on success. One must - // have called |ThreadsSuspend| first. - bool ThreadInfoGet(pid_t tid, ThreadInfo* info); - - // These are only valid after a call to |Init|. - const wasteful_vector<pid_t> &threads() { return threads_; } - const wasteful_vector<MappingInfo*> &mappings() { return mappings_; } - const MappingInfo* FindMapping(const void* address) const; - - // Find a block of memory to take as the stack given the top of stack pointer. - // stack: (output) the lowest address in the memory area - // stack_len: (output) the length of the memory area - // stack_top: the current top of the stack - bool GetStackInfo(const void** stack, size_t* stack_len, uintptr_t stack_top); - - PageAllocator* allocator() { return &allocator_; } - - // memcpy from a remote process. - static void CopyFromProcess(void* dest, pid_t child, const void* src, - size_t length); - - // Builds a proc path for a certain pid for a node. path is a - // character array that is overwritten, and node is the final node - // without any slashes. - void BuildProcPath(char* path, pid_t pid, const char* node) const; - - // Utility method to find the location of where the kernel has - // mapped linux-gate.so in memory(shows up in /proc/pid/maps as - // [vdso], but we can't guarantee that it's the only virtual dynamic - // shared object. Parsing the auxilary vector for AT_SYSINFO_EHDR - // is the safest way to go.) - void* FindBeginningOfLinuxGateSharedLibrary(const pid_t pid) const; - private: - bool EnumerateMappings(wasteful_vector<MappingInfo*>* result) const; - bool EnumerateThreads(wasteful_vector<pid_t>* result) const; - - const pid_t pid_; - - mutable PageAllocator allocator_; - - bool threads_suspened_; - wasteful_vector<pid_t> threads_; // the ids of all the threads - wasteful_vector<MappingInfo*> mappings_; // info from /proc/<pid>/maps -}; - -} // namespace google_breakpad - -#endif // CLIENT_LINUX_HANDLER_LINUX_DUMPER_H_ |