You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
90 lines
3.0 KiB
90 lines
3.0 KiB
/* |
|
* Copyright (c) 2013-2018 The strace developers. |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions |
|
* are met: |
|
* 1. Redistributions of source code must retain the above copyright |
|
* notice, this list of conditions and the following disclaimer. |
|
* 2. Redistributions in binary form must reproduce the above copyright |
|
* notice, this list of conditions and the following disclaimer in the |
|
* documentation and/or other materials provided with the distribution. |
|
* 3. The name of the author may not be used to endorse or promote products |
|
* derived from this software without specific prior written permission. |
|
* |
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
*/ |
|
|
|
#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 */
|
|
|