72 lines
2.7 KiB
C++
72 lines
2.7 KiB
C++
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/*
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* Copyright (C) 2017 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <keyutils.h>
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#include <stdarg.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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// Deliberately not exposed. Callers should use the typed APIs instead.
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static long keyctl(int cmd, ...) {
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va_list va;
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va_start(va, cmd);
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unsigned long arg2 = va_arg(va, unsigned long);
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unsigned long arg3 = va_arg(va, unsigned long);
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unsigned long arg4 = va_arg(va, unsigned long);
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unsigned long arg5 = va_arg(va, unsigned long);
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va_end(va);
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return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
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}
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key_serial_t add_key(const char* type, const char* description, const void* payload,
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size_t payload_length, key_serial_t ring_id) {
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return syscall(__NR_add_key, type, description, payload, payload_length, ring_id);
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}
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key_serial_t keyctl_get_keyring_ID(key_serial_t id, int create) {
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return keyctl(KEYCTL_GET_KEYRING_ID, id, create);
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}
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long keyctl_revoke(key_serial_t id) {
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return keyctl(KEYCTL_REVOKE, id);
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}
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long keyctl_search(key_serial_t ring_id, const char* type, const char* description,
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key_serial_t dest_ring_id) {
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return keyctl(KEYCTL_SEARCH, ring_id, type, description, dest_ring_id);
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}
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long keyctl_setperm(key_serial_t id, int permissions) {
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return keyctl(KEYCTL_SETPERM, id, permissions);
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}
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long keyctl_unlink(key_serial_t key, key_serial_t keyring) {
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return keyctl(KEYCTL_UNLINK, key, keyring);
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}
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