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19 lines
908 B
Plaintext
19 lines
908 B
Plaintext
Codezero POSIX Services
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This directory contains the source code for the POSIX services developed on top
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of the Codezero Microkernel. There is a pager called MM0 which demonstrates how
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a pager on top of Codezero should act, by its system call usage.
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FS0 is the VFS task that implements File IO via IPC. FS0 can be thought of as a
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micokernel server.
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Test0 is the userspace task that tests microkernel system call functionality as
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well as the POSIX system call functionality by issuing calls to MM0 and FS0.
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Codezero POSIX services partially demonstrate how a POSIX level operating
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system would be written on top of Codezero. Unlike shallow implementations on
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embedded systems that only look like POSIX, mm0 and fs0 implement a real virtual
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memory subsystem and virtual filesystem that solidly backs the API. Neverhteless
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services such as terminal IO and common filesystem support are currently
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missing.
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