Dmitry V. Levin
d6c71dd061
Indent the C preprocessor directives to reflect their nesting using the following script: $ cppi -l $(git grep -El '^[[:space:]]*#[[:space:]]*(if|ifdef|ifndef|elif|else|endif|define|pragma)[[:space:]]' |grep -v '\.sh$') |while read f; do cppi < "$f" > "$f".cppi; mv "$f".cppi "$f" done
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
|
|
* Copyright (c) 2013-2018 The strace developers.
|
|
*
|
|
* SPDX-License-Identifier: LGPL-2.1-or-later
|
|
*/
|
|
|
|
#ifndef STRACE_MMAP_CACHE_H
|
|
# define STRACE_MMAP_CACHE_H
|
|
|
|
/*
|
|
* Keep a sorted array of cache entries,
|
|
* so that we can binary search through it.
|
|
*/
|
|
|
|
struct mmap_cache_t {
|
|
struct mmap_cache_entry_t *entry;
|
|
void (*free_fn)(struct tcb *, const char *caller);
|
|
unsigned int size;
|
|
unsigned int generation;
|
|
};
|
|
|
|
struct mmap_cache_entry_t {
|
|
/**
|
|
* example entry:
|
|
* 7fabbb09b000-7fabbb09f000 r-xp 00179000 fc:00 1180246 /lib/libc-2.11.1.so
|
|
*
|
|
* start_addr is 0x7fabbb09b000
|
|
* end_addr is 0x7fabbb09f000
|
|
* mmap_offset is 0x179000
|
|
* protections is MMAP_CACHE_PROT_READABLE|MMAP_CACHE_PROT_EXECUTABLE
|
|
* major is 0xfc
|
|
* minor is 0x00
|
|
* binary_filename is "/lib/libc-2.11.1.so"
|
|
*/
|
|
unsigned long start_addr;
|
|
unsigned long end_addr;
|
|
unsigned long mmap_offset;
|
|
unsigned char protections;
|
|
unsigned long major, minor;
|
|
char *binary_filename;
|
|
};
|
|
|
|
enum mmap_cache_protection {
|
|
MMAP_CACHE_PROT_READABLE = 1 << 0,
|
|
MMAP_CACHE_PROT_WRITABLE = 1 << 1,
|
|
MMAP_CACHE_PROT_EXECUTABLE = 1 << 2,
|
|
MMAP_CACHE_PROT_SHARED = 1 << 3,
|
|
};
|
|
|
|
enum mmap_cache_rebuild_result {
|
|
MMAP_CACHE_REBUILD_NOCACHE,
|
|
MMAP_CACHE_REBUILD_READY,
|
|
MMAP_CACHE_REBUILD_RENEWED,
|
|
};
|
|
|
|
typedef bool (*mmap_cache_search_fn)(struct mmap_cache_entry_t *, void *);
|
|
|
|
extern void
|
|
mmap_cache_enable(void);
|
|
|
|
extern enum mmap_cache_rebuild_result
|
|
mmap_cache_rebuild_if_invalid(struct tcb *, const char *caller);
|
|
|
|
extern struct mmap_cache_entry_t *
|
|
mmap_cache_search(struct tcb *, unsigned long ip);
|
|
|
|
extern struct mmap_cache_entry_t *
|
|
mmap_cache_search_custom(struct tcb *, mmap_cache_search_fn, void *);
|
|
|
|
#endif /* !STRACE_MMAP_CACHE_H */
|