1 // SPDX-License-Identifier: GPL-2.0-only 2 #include <sys/syscall.h> 3 #include <unistd.h> 4 5 #include "pkey-helpers.h" 6 7 int 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 15 int 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 22 int 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 } 41