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753cc4344d
We no longer have a need to maintain basics as a separate component. Folding it into libc-bottom-half eliminates a fair amount of redundancy.
20 lines
851 B
Markdown
20 lines
851 B
Markdown
# WASI libc "bottom half".
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The WASI libc "bottom half" is conceptually the lower half of a traditional libc
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implementation, consisting of C interfaces to the low-level WASI syscalls.
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This implementation is partially derived from the "bottom half" of [cloudlibc],
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revision 8835639f27fc42d32096d59d294a0bbb857dc368.
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[cloudlibc]: https://github.com/NuxiNL/cloudlibc
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This implementation includes preopen functionality, which emulates POSIX APIs
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accepting absolute paths by translating them into pre-opened directory handles
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and relative paths that can be opened with `openat`. This technique is inspired
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by [libpreopen], however the implementation here is designed to be built into
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libc rather than to be a layer on top of libc.
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[libpreopen]: https://github.com/musec/libpreopen
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The WASI libc lower half currently depends on the dlmalloc component.
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