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/*
* sys_mprotect(unsigned long start, size_t len, unsigned long prot)
*/
#include <asm/mman.h>
#include "arch.h"
#include "maps.h"
#include "random.h"
#include "sanitise.h"
#include "shm.h"
#include "syscall.h"
#include "trinity.h"
#include "utils.h"
static struct map* map;
static void sanitise_mprotect(__unused__ struct syscallrecord *rec)
{
map = common_set_mmap_ptr_len();
}
/*
* If we successfully did an mprotect, update our record of the mappings prot bits.
*/
static void post_mprotect(struct syscallrecord *rec)
{
if (rec->retval != 0)
map->prot = rec->a3;
}
static unsigned long mprotect_prots[] = {
PROT_READ, PROT_WRITE, PROT_EXEC, PROT_SEM,
PROT_GROWSDOWN, PROT_GROWSUP,
};
struct syscallentry syscall_mprotect = {
.name = "mprotect",
.num_args = 3,
.arg1name = "start",
.arg1type = ARG_MMAP,
.arg2name = "len",
.arg3name = "prot",
.arg3type = ARG_LIST,
.arg3list = ARGLIST(mprotect_prots),
.sanitise = sanitise_mprotect,
.group = GROUP_VM,
.post = post_mprotect,
};
struct syscallentry syscall_pkey_mprotect = {
.name = "pkey_mprotect",
.num_args = 4,
.arg1name = "start",
.arg1type = ARG_MMAP,
.arg2name = "len",
.arg3name = "prot",
.arg3type = ARG_LIST,
.arg3list = ARGLIST(mprotect_prots),
.arg4name = "key",
.sanitise = sanitise_mprotect,
.group = GROUP_VM,
.post = post_mprotect,
};
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