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Kernel+Userland: Remove shared buffers (shbufs)
All users of this mechanism have been switched to anonymous files and passing file descriptors with sendfd()/recvfd(). Shbufs got us where we are today, but it's time we say good-bye to them and welcome a much more idiomatic replacement. :^)
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parent
2cd16778b5
commit
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28 changed files with 2 additions and 1022 deletions
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@ -79,34 +79,6 @@ int perf_event(int type, uintptr_t arg1, FlatPtr arg2)
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__RETURN_WITH_ERRNO(rc, rc, -1);
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}
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void* shbuf_get(int shbuf_id, size_t* size)
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{
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ssize_t rc = syscall(SC_shbuf_get, shbuf_id, size);
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if (rc < 0 && -rc < EMAXERRNO) {
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errno = -rc;
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return (void*)-1;
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}
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return (void*)rc;
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}
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int shbuf_release(int shbuf_id)
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{
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int rc = syscall(SC_shbuf_release, shbuf_id);
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__RETURN_WITH_ERRNO(rc, rc, -1);
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}
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int shbuf_create(int size, void** buffer)
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{
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int rc = syscall(SC_shbuf_create, size, buffer);
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__RETURN_WITH_ERRNO(rc, rc, -1);
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}
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int shbuf_allow_pid(int shbuf_id, pid_t peer_pid)
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{
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int rc = syscall(SC_shbuf_allow_pid, shbuf_id, peer_pid);
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__RETURN_WITH_ERRNO(rc, rc, -1);
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}
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int get_stack_bounds(uintptr_t* user_stack_base, size_t* user_stack_size)
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{
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int rc = syscall(SC_get_stack_bounds, user_stack_base, user_stack_size);
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