1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
// SPDX-License-Identifier: GPL-2.0-only
#include <sys/syscall.h>
#include <unistd.h>
#include "pkey-helpers.h"
int sys_pkey_alloc(unsigned long flags, unsigned long init_val)
{
int ret = syscall(SYS_pkey_alloc, flags, init_val);
dprintf1("%s(flags=%lx, init_val=%lx) syscall ret: %d errno: %d\n",
__func__, flags, init_val, ret, errno);
return ret;
}
int sys_pkey_free(unsigned long pkey)
{
int ret = syscall(SYS_pkey_free, pkey);
dprintf1("%s(pkey=%ld) syscall ret: %d\n", __func__, pkey, ret);
return ret;
}
int sys_mprotect_pkey(void *ptr, size_t size, unsigned long orig_prot,
unsigned long pkey)
{
int sret;
dprintf2("%s(0x%p, %zx, prot=%lx, pkey=%lx)\n", __func__,
ptr, size, orig_prot, pkey);
errno = 0;
sret = syscall(__NR_pkey_mprotect, ptr, size, orig_prot, pkey);
if (errno) {
dprintf2("SYS_mprotect_key sret: %d\n", sret);
dprintf2("SYS_mprotect_key prot: 0x%lx\n", orig_prot);
dprintf2("SYS_mprotect_key failed, errno: %d\n", errno);
if (DEBUG_LEVEL >= 2)
perror("SYS_mprotect_pkey");
}
return sret;
}
|
