Stop using varargs in libkeyutils. am: 8f4bb45a

#include <sys/syscall.h>

#include <unistd.h>

// Deliberately not exposed. Callers should use the typed APIs instead.

static long keyctl(int cmd, ...) {

  va_list va;

  va_start(va, cmd);

  unsigned long arg2 = va_arg(va, unsigned long);

  unsigned long arg3 = va_arg(va, unsigned long);

  unsigned long arg4 = va_arg(va, unsigned long);

  unsigned long arg5 = va_arg(va, unsigned long);

  va_end(va);

  return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);

}

// keyctl(2) is deliberately not exposed. Callers should use the typed APIs instead.

key_serial_t add_key(const char* type, const char* description, const void* payload,

                     size_t payload_length, key_serial_t ring_id) {

}

key_serial_t keyctl_get_keyring_ID(key_serial_t id, int create) {

  return keyctl(KEYCTL_GET_KEYRING_ID, id, create);

  return syscall(__NR_keyctl, KEYCTL_GET_KEYRING_ID, id, create);

}

long keyctl_revoke(key_serial_t id) {

  return keyctl(KEYCTL_REVOKE, id);

  return syscall(__NR_keyctl, KEYCTL_REVOKE, id);

}

long keyctl_search(key_serial_t ring_id, const char* type, const char* description,

                   key_serial_t dest_ring_id) {

  return keyctl(KEYCTL_SEARCH, ring_id, type, description, dest_ring_id);

  return syscall(__NR_keyctl, KEYCTL_SEARCH, ring_id, type, description, dest_ring_id);

}

long keyctl_setperm(key_serial_t id, int permissions) {

  return keyctl(KEYCTL_SETPERM, id, permissions);

  return syscall(__NR_keyctl, KEYCTL_SETPERM, id, permissions);

}

long keyctl_unlink(key_serial_t key, key_serial_t keyring) {

  return keyctl(KEYCTL_UNLINK, key, keyring);

  return syscall(__NR_keyctl, KEYCTL_UNLINK, key, keyring);

}

long keyctl_restrict_keyring(key_serial_t keyring, const char* type, const char* restriction) {

  return keyctl(KEYCTL_RESTRICT_KEYRING, keyring, type, restriction);

  return syscall(__NR_keyctl, KEYCTL_RESTRICT_KEYRING, keyring, type, restriction);

}

long keyctl_get_security(key_serial_t id, char* buffer, size_t buflen) {

  return keyctl(KEYCTL_GET_SECURITY, id, buffer, buflen);

  return syscall(__NR_keyctl, KEYCTL_GET_SECURITY, id, buffer, buflen);

}