Kernel+LibC: Rename shared buffer syscalls to use a prefix

This feels a lot more consistent and Unixy:

    create_shared_buffer()   => shbuf_create()
    share_buffer_with()      => shbuf_allow_pid()
    share_buffer_globally()  => shbuf_allow_all()
    get_shared_buffer()      => shbuf_get()
    release_shared_buffer()  => shbuf_release()
    seal_shared_buffer()     => shbuf_seal()
    get_shared_buffer_size() => shbuf_get_size()

Also, "shared_buffer_id" is shortened to "shbuf_id" all around.

1 files changed, 27 insertions, 0 deletions

diff --git a/Base/usr/share/man/man2/shbuf_create.md b/Base/usr/share/man/man2/shbuf_create.md
new file mode 100644
index 0000000000..1a05a4efe3
--- /dev/null
+++ b/Base/usr/share/man/man2/shbuf_create.md
@@ -0,0 +1,27 @@
+## Name
+
+shbuf\_create - create a shareable memory buffer
+
+## Synopsis
+```**c++
+#include <SharedBuffer.h>
+
+int shbuf_create(int size, void** buffer);
+```
+
+## Description
+
+Creates a new memory region that can be shared with other processes. The region is only accessible to the calling process by default.
+
+## Return value
+
+If a region is successfully created, `shbuf_create()` stores a pointer to the memory in `buffer` and returns a buffer ID. Otherwise, it returns -1 and sets `errno` to describe the error.
+
+## Errors
+
+* `EINVAL`: `size` is zero or negative.
+* `EFAULT`: `buffer` is not a valid address.
+
+## See also
+
+* [`shbuf_allow_pid`(2)](shbuf_allow_pid.md)