Tracking issue for missing POSIX APIs

While Redox's aim is not full POSIX compatibility, there are lots of missing APIs that generally only come with benefits.

Non-exhaustive list:

• wcsrtombs (#166 (closed))
• UTIME_OMIT and UTIME_NOW (#172 (closed))
• wait3 (no longer in POSIX?, #170)
• malloc.h (not in POSIX?, #136)
• towctrans and wctrans (#32 (closed))
• some sys/mman.h defs (#73)
• some networking constants (#164 (closed))
• mknod (#103)
• swprintf
• swscanf
• ungetwc
• vfwprintf
• vwprintf
• vswprintf
• wcsftime
• wcswcs
• wcsxfrm
• wprintf
• wscanf
• redox#1461
• redox#1488
• redox#1485
• redox#1483
• redox#1475
• redox#1474

Not all POSIX APIs are available as stubs, but those that are, can be found by looking for commented-out #[no_mangle], e.g. via rg '^.*//.*#\[no_mangle\]'.

There are some POSIX requirements that will be much harder to fix. First, the current context=process=thread assumption must be dealt with. Second, POSIX appears to allow all characters but NUL and '/', which conflicts with how schemes work (even returning an error due to lack of support for : in the filesystem, doesn't apply, as it will work but the behavior will be different).

Reference

Almost all POSIX functions are well-documented on the following links:

• OpenGroup
• cppreference.com