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