static void _dt_sigsegv_handler(int param)
{
pid_t pid;
gchar *name_used;
int fout;
gboolean delete_file = FALSE;
char datadir[PATH_MAX] = { 0 };
if((fout = g_file_open_tmp("darktable_bt_XXXXXX.txt", &name_used, NULL)) == -1)
fout = STDOUT_FILENO; // just print everything to stdout
dprintf(fout, "this is %s reporting a segfault:\n\n", PACKAGE_STRING);
if(fout != STDOUT_FILENO) close(fout);
dt_loc_get_datadir(datadir, sizeof(datadir));
gchar *pid_arg = g_strdup_printf("%d", (int)getpid());
gchar *comm_arg = g_strdup_printf("%s/gdb_commands", datadir);
gchar *log_arg = g_strdup_printf("set logging on %s", name_used);
if((pid = fork()) != -1)
{
if(pid)
{
#ifdef __linux__
// Allow the child to ptrace us
prctl(PR_SET_PTRACER, pid, 0, 0, 0);
#endif
waitpid(pid, NULL, 0);
g_printerr("backtrace written to %s\n", name_used);
}
else
{
if(execlp("gdb", "gdb", darktable.progname, pid_arg, "-batch", "-ex", log_arg, "-x", comm_arg, NULL))
{
delete_file = TRUE;
g_printerr("an error occurred while trying to execute gdb. please check if gdb is installed on your "
"system.\n");
}
}
}
else
{
delete_file = TRUE;
g_printerr("an error occurred while trying to execute gdb.\n");
}
if(delete_file) g_unlink(name_used);
g_free(pid_arg);
g_free(comm_arg);
g_free(log_arg);
g_free(name_used);
/* pass it further to the old handler*/
_dt_sigsegv_old_handler(param);
}
static
void _dt_sigsegv_handler(int param)
{
FILE *fd;
gchar buf[PIPE_BUF];
gchar *name_used;
int fout;
gboolean delete_file = FALSE;
char datadir[DT_MAX_PATH_LEN];
if((fout = g_file_open_tmp("darktable_bt_XXXXXX.txt", &name_used, NULL)) == -1)
fout = STDOUT_FILENO; // just print everything to stdout
dprintf(fout, "this is %s reporting a segfault:\n\n", PACKAGE_STRING);
dt_loc_get_datadir(datadir, DT_MAX_PATH_LEN);
gchar *command = g_strdup_printf("gdb %s %d -batch -x %s/gdb_commands", darktable.progname, (int)getpid(), datadir);
if((fd = popen(command, "r")) != NULL)
{
gboolean read_something = FALSE;
while((fgets(buf, PIPE_BUF, fd)) != NULL)
{
read_something = TRUE;
dprintf(fout, "%s", buf);
}
pclose(fd);
if(fout != STDOUT_FILENO)
{
if(read_something)
g_printerr("backtrace written to %s\n", name_used);
else
{
delete_file = TRUE;
g_printerr("an error occured while trying to execute gdb. please check if gdb is installed on your system.\n");
}
}
}
else
{
delete_file = TRUE;
g_printerr("an error occured while trying to execute gdb.\n");
}
if(fout != STDOUT_FILENO)
close(fout);
if(delete_file)
g_unlink(name_used);
g_free(command);
g_free(name_used);
/* pass it further to the old handler*/
_dt_sigsegv_old_handler(param);
}
