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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#ifndef foocontexthfoo
#define foocontexthfoo
/***
This file is part of libminidump.
Copyright 2012 Lennart Poettering
libminidump is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
libminidump is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with libminidump; If not, see
<http://www.gnu.org/licenses/>.
***/
#include <stdbool.h>
#include <elf.h>
#include <sys/user.h>
#include <sys/procfs.h>
#include <signal.h>
#include <link.h>
#include "minidump.h"
#include "format.h"
#define MINIDUMP_STREAMS_MAX 17
#define CODE_SAVE_SIZE 256
#define STACK_SAVE_SIZE (32*1024)
struct buffer {
char *data;
size_t size;
};
struct extent {
unsigned long address;
size_t size;
};
struct map_info {
struct extent extent;
char *name;
char *build_id;
/* When writing a minidump, the location of this stream */
size_t minidump_offset;
};
struct thread_info {
pid_t tid;
unsigned long stack_pointer;
unsigned long instruction_pointer;
char *name;
bool have_prstatus:1;
bool have_siginfo:1;
bool have_user:1;
struct elf_prstatus prstatus; /* only available on coredumps */
siginfo_t siginfo; /* only available on ptrace */
struct user user; /* only available on ptrace */
struct user_regs_struct regs;
struct user_fpregs_struct fpregs;
#ifdef __i386
struct user_fpxregs_struct fpxregs;
#endif
/* When writing a minidump, the location of this context */
size_t minidump_offset;
};
struct context {
pid_t pid;
int coredump_fd;
int minidump_fd;
bool have_coredump_header:1;
bool have_minidump_header:1;
bool have_prpsinfo:1;
ElfW(Ehdr) coredump_header; /* only available on coredumps */
struct elf_prpsinfo prpsinfo; /* only available on coredumps */
struct minidump_header minidump_header; /* only available on minidumps */
struct buffer auxv;
/* The total maps we know off */
struct map_info *maps;
unsigned n_maps;
unsigned allocated_maps;
/* The subset we care about */
struct map_info *write_maps;
unsigned n_write_maps;
struct thread_info *threads;
unsigned n_threads;
unsigned allocated_threads;
/* Data from /proc */
struct buffer proc_maps;
struct buffer proc_status;
struct buffer proc_environ;
struct buffer proc_cmdline;
struct buffer proc_comm;
struct buffer proc_attr_current;
struct buffer proc_exe;
/* System data */
struct buffer proc_cpuinfo;
struct buffer lsb_release;
struct buffer os_release;
void *output;
size_t output_size;
size_t output_allocated;
size_t output_offset;
/* This is needed while writing a minidump */
struct minidump_directory minidump_directory[MINIDUMP_STREAMS_MAX];
uint32_t minidump_n_streams;
/* This is needed while writing a minicore */
ElfW(Phdr) *minicore_phs;
uint32_t minicore_n_phs;
};
#define CONTEXT_HAVE_PROCESS(c) ((c)->pid > 0)
#define CONTEXT_HAVE_COREDUMP(c) ((c)->coredump_fd >= 0)
#define CONTEXT_HAVE_MINIDUMP(c) ((c)->minidump_fd >= 0)
int context_read_memory(struct context *c, unsigned long source, void *destination, size_t length);
int context_add_thread(struct context *c, struct thread_info *i);
int context_add_mapping(struct context *c, unsigned long start, unsigned long end, const char *name);
struct map_info *context_find_map_info(struct map_info *m, unsigned n, unsigned long address);
int context_reserve_bytes(struct context *c, size_t bytes, void **ptr, size_t *offset);
int context_append_bytes(struct context *c, const void *data, size_t bytes, size_t *offset);
int context_null_bytes(struct context *c, size_t bytes, size_t *offset);
int context_append_concat_string(struct context *c, size_t *offset, size_t *size, ...);
void context_show(FILE *f, struct context *c);
int context_load(struct context *c);
void context_release(struct context *c);
#endif
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