libc-top-half/README.md

   1 # WASI libc "top half".
   2
   3 The WASI libc "top half" is conceptually the upper half of a traditional libc
   4 implementation, consisting of C standard library and other relatively
   5 higher-level functionality.
   6
   7 Code in the musl directory is based on musl revision
   8 040c1d16b468c50c04fc94edff521f1637708328, which is v1.2.0, from
   9 git://git.musl-libc.org/musl.
  10
  11 Whole files which are unused are omitted. Changes to upstream code are wrapped
  12 in preprocessor directives controlled by the macro `__wasilibc_unmodified_upstream`.
  13
  14 Some major known missing areas include:
  15  - threads
  16  - aio
  17  - setjmp
  18  - signals
  19  - ipc
  20  - termios
  21  - nss
  22  - timezones
  23  - non-builtin locales
  24  - TIOCGWINSZ (because cloudabi lacks it; affects isatty, line buffering for stdout)
  25  - O\_CLOEXEC, O\_NOCTTY (because cloudabi lacks them)