1#include <libkern/libkern.h>
2#include <libkern/section_keywords.h>
3#include <libkern/compression/compression.h>
4
5#if defined(SECURITY_READ_ONLY_LATE)
6SECURITY_READ_ONLY_LATE(const compression_ki_t*) compression_ki_ptr = NULL;
7static SECURITY_READ_ONLY_LATE(registration_callback_t) registration_callback = NULL;
8#else
9const compression_ki_t* compression_ki_ptr = NULL;
10static registration_callback_t registration_callback = NULL;
11#endif
12
13void
14compression_interface_register(const compression_ki_t *ki)
15{
16 if (compression_ki_ptr) {
17 panic("compression interface already set");
18 }
19
20 compression_ki_ptr = ki;
21
22 if (registration_callback) {
23 registration_callback();
24 }
25}
26
27void
28compression_interface_set_registration_callback(registration_callback_t callback)
29{
30 if (callback && registration_callback) {
31 panic("compression interface registration callback is already set");
32 }
33
34 registration_callback = callback;
35}
36