tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-only
2#define __SANE_USERSPACE_TYPES__
3#include <sys/syscall.h>
4#include <unistd.h>
5
6#include "pkey-helpers.h"
7
8int sys_pkey_alloc(unsigned long flags, unsigned long init_val)
9{
10 int ret = syscall(SYS_pkey_alloc, flags, init_val);
11 dprintf1("%s(flags=%lx, init_val=%lx) syscall ret: %d errno: %d\n",
12 __func__, flags, init_val, ret, errno);
13 return ret;
14}
15
16int sys_pkey_free(unsigned long pkey)
17{
18 int ret = syscall(SYS_pkey_free, pkey);
19 dprintf1("%s(pkey=%ld) syscall ret: %d\n", __func__, pkey, ret);
20 return ret;
21}
22
23int sys_mprotect_pkey(void *ptr, size_t size, unsigned long orig_prot,
24 unsigned long pkey)
25{
26 int sret;
27
28 dprintf2("%s(0x%p, %zx, prot=%lx, pkey=%lx)\n", __func__,
29 ptr, size, orig_prot, pkey);
30
31 errno = 0;
32 sret = syscall(__NR_pkey_mprotect, ptr, size, orig_prot, pkey);
33 if (errno) {
34 dprintf2("SYS_mprotect_key sret: %d\n", sret);
35 dprintf2("SYS_mprotect_key prot: 0x%lx\n", orig_prot);
36 dprintf2("SYS_mprotect_key failed, errno: %d\n", errno);
37 if (DEBUG_LEVEL >= 2)
38 perror("SYS_mprotect_pkey");
39 }
40 return sret;
41}