clib_error_t *
vlib_sysfs_read (char *file_name, char *fmt, ...)
{
unformat_input_t input;
u8 *s = 0;
int fd;
ssize_t sz;
uword result;
fd = open (file_name, O_RDONLY);
if (fd < 0)
return clib_error_return_unix (0, "open `%s'", file_name);
vec_validate (s, 4095);
sz = read (fd, s, vec_len (s));
if (sz < 0)
{
close (fd);
vec_free (s);
return clib_error_return_unix (0, "read `%s'", file_name);
}
_vec_len (s) = sz;
unformat_init_vector (&input, s);
va_list va;
va_start (va, fmt);
result = va_unformat (&input, fmt, &va);
va_end (va);
vec_free (s);
close (fd);
if (result == 0)
return clib_error_return (0, "unformat error");
return 0;
}
static uword
startup_config_process (vlib_main_t * vm,
vlib_node_runtime_t * rt, vlib_frame_t * f)
{
unix_main_t *um = &unix_main;
u8 *buf = 0;
uword l, n = 1;
vlib_process_suspend (vm, 2.0);
while (um->unix_config_complete == 0)
vlib_process_suspend (vm, 0.1);
if (um->startup_config_filename)
{
unformat_input_t sub_input;
int fd;
struct stat s;
char *fn = (char *) um->startup_config_filename;
fd = open (fn, O_RDONLY);
if (fd < 0)
{
clib_warning ("failed to open `%s'", fn);
return 0;
}
if (fstat (fd, &s) < 0)
{
clib_warning ("failed to stat `%s'", fn);
bail:
close (fd);
return 0;
}
if (!(S_ISREG (s.st_mode) || S_ISLNK (s.st_mode)))
{
clib_warning ("not a regular file: `%s'", fn);
goto bail;
}
while (n > 0)
{
l = vec_len (buf);
vec_resize (buf, 4096);
n = read (fd, buf + l, 4096);
if (n > 0)
{
_vec_len (buf) = l + n;
if (n < 4096)
break;
}
else
break;
}
if (um->log_fd && vec_len (buf))
{
u8 *lv = 0;
lv = format (lv, "%U: ***** Startup Config *****\n%v",
format_timeval, 0 /* current bat-time */ ,
0 /* current bat-format */ ,
buf);
{
int rv __attribute__ ((unused)) =
write (um->log_fd, lv, vec_len (lv));
}
vec_reset_length (lv);
lv = format (lv, "%U: ***** End Startup Config *****\n",
format_timeval, 0 /* current bat-time */ ,
0 /* current bat-format */ );
{
int rv __attribute__ ((unused)) =
write (um->log_fd, lv, vec_len (lv));
}
vec_free (lv);
}
if (vec_len (buf))
{
unformat_init_vector (&sub_input, buf);
vlib_cli_input (vm, &sub_input, 0, 0);
/* frees buf for us */
unformat_free (&sub_input);
}
close (fd);
}
return 0;
}
