2 * Copyright (c) 2013-2018 The strace developers.
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5 * modification, are permitted provided that the following conditions
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27 #ifndef STRACE_MMAP_CACHE_H
28 #define STRACE_MMAP_CACHE_H
31 * Keep a sorted array of cache entries,
32 * so that we can binary search through it.
37 * 7fabbb09b000-7fabbb09f000 r-xp 00179000 fc:00 1180246 /lib/libc-2.11.1.so
39 * start_addr is 0x7fabbb09b000
40 * end_addr is 0x7fabbb09f000
41 * mmap_offset is 0x179000
42 * protections is MMAP_CACHE_PROT_READABLE|MMAP_CACHE_PROT_EXECUTABLE
45 * binary_filename is "/lib/libc-2.11.1.so"
47 unsigned long start_addr;
48 unsigned long end_addr;
49 unsigned long mmap_offset;
50 unsigned char protections;
51 unsigned long major, minor;
52 char *binary_filename;
55 enum mmap_cache_protection {
56 MMAP_CACHE_PROT_READABLE = 1 << 0,
57 MMAP_CACHE_PROT_WRITABLE = 1 << 1,
58 MMAP_CACHE_PROT_EXECUTABLE = 1 << 2,
59 MMAP_CACHE_PROT_SHARED = 1 << 3,
62 enum mmap_cache_rebuild_result {
63 MMAP_CACHE_REBUILD_NOCACHE,
64 MMAP_CACHE_REBUILD_READY,
65 MMAP_CACHE_REBUILD_RENEWED,
69 mmap_cache_enable(void);
72 mmap_cache_is_enabled(void);
75 mmap_cache_invalidate(struct tcb *);
78 mmap_cache_delete(struct tcb *, const char *caller);
80 extern enum mmap_cache_rebuild_result
81 mmap_cache_rebuild_if_invalid(struct tcb *, const char *caller);
83 extern struct mmap_cache_t *
84 mmap_cache_search(struct tcb *, unsigned long ip);
86 #endif /* !STRACE_MMAP_CACHE_H */