Index: uspace/lib/c/generic/perm.c
===================================================================
--- uspace/lib/c/generic/perm.c	(revision d5c1051faf4391647834d99babdd4a44ee5d9700)
+++ uspace/lib/c/generic/perm.c	(revision 2ca5a198f7308b0c892b04c0fcda44f5e83eb8f0)
@@ -48,13 +48,13 @@
  *
  */
-int perm_grant(task_id_t id, unsigned int perms)
+errno_t perm_grant(task_id_t id, unsigned int perms)
 {
 #ifdef __32_BITS__
 	sysarg64_t arg = (sysarg64_t) id;
-	return (int) __SYSCALL2(SYS_PERM_GRANT, (sysarg_t) &arg, (sysarg_t) perms);
+	return (errno_t) __SYSCALL2(SYS_PERM_GRANT, (sysarg_t) &arg, (sysarg_t) perms);
 #endif
 	
 #ifdef __64_BITS__
-	return (int) __SYSCALL2(SYS_PERM_GRANT, (sysarg_t) id, (sysarg_t) perms);
+	return (errno_t) __SYSCALL2(SYS_PERM_GRANT, (sysarg_t) id, (sysarg_t) perms);
 #endif
 }
@@ -68,13 +68,13 @@
  *
  */
-int perm_revoke(task_id_t id, unsigned int perms)
+errno_t perm_revoke(task_id_t id, unsigned int perms)
 {
 #ifdef __32_BITS__
 	sysarg64_t arg = (sysarg64_t) id;
-	return (int) __SYSCALL2(SYS_PERM_REVOKE, (sysarg_t) &arg, (sysarg_t) perms);
+	return (errno_t) __SYSCALL2(SYS_PERM_REVOKE, (sysarg_t) &arg, (sysarg_t) perms);
 #endif
 	
 #ifdef __64_BITS__
-	return (int) __SYSCALL2(SYS_PERM_REVOKE, (sysarg_t) id, (sysarg_t) perms);
+	return (errno_t) __SYSCALL2(SYS_PERM_REVOKE, (sysarg_t) id, (sysarg_t) perms);
 #endif
 }