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 8 int 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 16 int 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 23 int 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 } 42