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/*
* Copyright (C) 2017 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <keyutils.h>
#include <stdarg.h>
#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);
}
key_serial_t add_key(const char* type, const char* description, const void* payload,
size_t payload_length, key_serial_t ring_id) {
return syscall(__NR_add_key, type, description, payload, payload_length, ring_id);
}
key_serial_t keyctl_get_keyring_ID(key_serial_t id, int create) {
return keyctl(KEYCTL_GET_KEYRING_ID, id, create);
}
long keyctl_revoke(key_serial_t id) {
return 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);
}
long keyctl_setperm(key_serial_t id, int permissions) {
return keyctl(KEYCTL_SETPERM, id, permissions);
}
long keyctl_unlink(key_serial_t key, key_serial_t keyring) {
return keyctl(KEYCTL_UNLINK, key, keyring);
}
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