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Add coredump feature and print PC

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This commit is contained in:
Nick Peng
2018-12-30 23:19:52 +08:00
parent 82db995bc1
commit d6c67edb1e
5 changed files with 38 additions and 5 deletions
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21
src/smartdns.c
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@@ -39,6 +39,7 @@
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <ucontext.h>
#define RESOLVE_FILE "/etc/resolv.conf"
#define MAX_LINE_LEN 1024
@@ -297,10 +298,24 @@ void sig_exit(int signo)
dns_server_stop();
}
void sig_error_exit(int signo, siginfo_t *siginfo, void *context)
void sig_error_exit(int signo, siginfo_t *siginfo, void *ct)
{
tlog(TLOG_ERROR, "process exit with signal %d, code = %d, errno = %d, pid = %d, self = %d, addr = %p\n", signo, siginfo->si_code, siginfo->si_errno,
siginfo->si_pid, getpid(), siginfo->si_addr);
unsigned long PC = 0;
ucontext_t *context = ct;
#if defined(__i386__)
int *pgregs = (int*)(&(context->uc_mcontext.gregs));
PC = pgregs[REG_EIP];
#elif defined(__x86_64__)
int *pgregs = (int*)(&(context->uc_mcontext.gregs));
PC = pgregs[REG_RIP];
#elif defined(__aarch64__) || defined(__arm__)
PC = context->uc_mcontext.arm_pc;
#elif defined(__mips__)
PC = context->uc_mcontext.pc;
#endif
tlog(TLOG_ERROR, "process exit with signal %d, code = %d, errno = %d, pid = %d, self = %d, pc = %#lx, addr = %#lx\n", signo, siginfo->si_code, siginfo->si_errno,
siginfo->si_pid, getpid(), PC, (unsigned long)siginfo->si_addr);
sleep(1);
_exit(0);
}