toolchain/musl/patches/110-read_timezone_from_fs.patch

   1 --- a/src/time/__tz.c
   2 +++ b/src/time/__tz.c
   3 @@ -23,6 +23,9 @@ static int r0[5], r1[5];
   4  static const unsigned char *zi, *trans, *index, *types, *abbrevs, *abbrevs_end;
   5  static size_t map_size;
   6
   7 +static const char *tzfile;
   8 +static size_t tzfile_size;
   9 +
  10  static char old_tz_buf[32];
  11  static char *old_tz = old_tz_buf;
  12  static size_t old_tz_size = sizeof old_tz_buf;
  13 @@ -125,6 +128,15 @@ static void do_tzset()
  14                 "/usr/share/zoneinfo/\0/share/zoneinfo/\0/etc/zoneinfo/\0";
  15
  16         s = getenv("TZ");
  17 +
  18 +       /* if TZ is empty try to read it from /etc/TZ */
  19 +       if (!s || !*s) {
  20 +               if (tzfile)
  21 +                       __munmap((void*)tzfile, tzfile_size);
  22 +
  23 +               s = tzfile = (void *)__map_file("/etc/TZ", &tzfile_size);
  24 +       }
  25 +
  26         if (!s) s = "/etc/localtime";
  27         if (!*s) s = __gmt;
  28