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Backtraces are back in e17 

Imported piece of code from master branch that makes gdb able to
generate backtraces again in the legacy e17 branch
This commit is contained in:
Thanatermesis 2014-05-29 13:55:34 +02:00
parent 79e709d06d
commit a05cdfad3f
1 changed files with 31 additions and 10 deletions
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41
src/bin/e_start_main.c
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@ -444,12 +444,13 @@ main(int argc, char **argv)
pid_t result;
int status;
Eina_Bool done = EINA_FALSE;
Eina_Bool remember_sigill = EINA_FALSE;
Eina_Bool remember_sigusr1 = EINA_FALSE;
Eina_Bool bad_kernel = EINA_FALSE;
#ifdef HAVE_SYS_PTRACE_H
if (!really_know)
ptrace(PT_ATTACH, child, NULL, NULL);
#endif
result = waitpid(child, &status, 0);
#ifdef HAVE_SYS_PTRACE_H
if ((!really_know) && (!stop_ptrace))
{
if (WIFSTOPPED(status))
@ -497,7 +498,7 @@ main(int argc, char **argv)
if (r != 0 ||
(sig.si_signo != SIGSEGV &&
sig.si_signo != SIGFPE &&
sig.si_signo != SIGBUS &&
// sig.si_signo != SIGBUS &&
sig.si_signo != SIGABRT))
{
#ifdef HAVE_SYS_PTRACE_H
@ -513,11 +514,31 @@ main(int argc, char **argv)
#endif
/* And call gdb if available */
r = 0;
if (home)
/* Check if patch to prevent ptrace to another process is present in the kernel. */
{
int fd;
char c;
fd = open("/proc/sys/kernel/yama/ptrace_scope", O_RDONLY);
if (fd != -1)
{
if (read(fd, &c, sizeof (c)) == sizeof (c) && c != '0')
bad_kernel = EINA_TRUE;
}
close(fd);
}
if (home && !bad_kernel)
{
/* call e_sys gdb */
snprintf(buffer, 4096,
"gdb %i %s/.e-crashdump.txt",
snprintf(buffer, sizeof(buffer),
"gdb "
"--pid=%i "
"-batch "
"-ex 'set logging file %s/.e-crashdump.txt' "
"-ex 'set logging on' "
"-ex 'thread apply all backtrace full' "
"-ex detach > /dev/null 2>&1 < /dev/zero",
child,
home);
r = system(buffer);
@ -536,13 +557,13 @@ main(int argc, char **argv)
/* call e_alert */
snprintf(buffer, 4096,
backtrace_str ?
"%s/enlightenment/utils/enlightenment_alert %i %i '%s' %i" :
"%s/enlightenment/utils/enlightenment_alert %i %i '%s' %i",
"%s/enlightenment/utils/enlightenment_alert %i %i %i '%s'" :
"%s/enlightenment/utils/enlightenment_alert %i %i %i",
eina_prefix_lib_get(pfx),
sig.si_signo == SIGSEGV && remember_sigusr1 ? SIGILL : sig.si_signo,
child,
backtrace_str,
r);
r,
backtrace_str);
r = system(buffer);
/* kill e */