SYS-OSS/FRET-qemu
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read self maps

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This commit is contained in:
Andrea Fioraldi 2021-07-16 10:31:02 +02:00
parent beb8bf68be
commit 03dfdbd7da
1 changed files with 46 additions and 0 deletions
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46
linux-user/syscall.c
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@ -13256,6 +13256,52 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
//// --- Begin LibAFL code ---
struct libafl_mapinfo {
uint64_t start, end;
uint64_t offset;
const char* path;
int flags, is_priv;
};
GSList * libafl_maps_next(GSList *map_info, struct libafl_mapinfo* ret);
GSList * libafl_maps_next(GSList *map_info, struct libafl_mapinfo* ret) {
if (!map_info || !ret)
return NULL;
GSList *s = g_slist_next(map_info);
if (!s)
return NULL;
MapInfo *e = (MapInfo *) s->data;
if (h2g_valid(e->start)) {
unsigned long min = e->start;
unsigned long max = e->end;
int flags = page_get_flags(h2g(min));
max = h2g_valid(max - 1) ?
max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1;
if (page_check_range(h2g(min), max - min, flags) == -1) {
return libafl_maps_next(s, ret);
}
int libafl_flags = 0;
if (flags & PAGE_READ) libafl_flags |= PROT_READ;
if (flags & PAGE_WRITE_ORG) libafl_flags |= PROT_WRITE;
if (flags & PAGE_EXEC) libafl_flags |= PROT_EXEC;
ret->start = (uint64_t)min;
ret->end = (uint64_t)max;
ret->offset = (uint64_t)e->offset;
ret->path = e->path;
ret->flags = libafl_flags;
ret->is_priv = e->is_priv;
return s;
} else {
return libafl_maps_next(s, ret);
}
}
struct syshook_ret {
uint64_t retval;
bool skip_syscall;