9c92ab6191
Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
80 lines
1.6 KiB
C
80 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* ionapp_import.c
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*
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* It is a user space utility to receive android ion memory buffer fd
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* over unix domain socket IPC that can be exported by ionapp_export.
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* This acts like a client for ionapp_export.
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*
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* Copyright (C) 2017 Pintu Kumar <pintu.ping@gmail.com>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include "ionutils.h"
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#include "ipcsocket.h"
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int main(void)
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{
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int ret, status;
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int sockfd, shared_fd;
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unsigned char *map_buf;
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unsigned long map_len;
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struct ion_buffer_info info;
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struct socket_info skinfo;
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/* This is the client part. Here 0 means client or importer */
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status = opensocket(&sockfd, SOCKET_NAME, 0);
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if (status < 0) {
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fprintf(stderr, "No exporter exists...\n");
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ret = status;
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goto err_socket;
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}
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skinfo.sockfd = sockfd;
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ret = socket_receive_fd(&skinfo);
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if (ret < 0) {
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fprintf(stderr, "Failed: socket_receive_fd\n");
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goto err_recv;
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}
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shared_fd = skinfo.datafd;
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printf("Received buffer fd: %d\n", shared_fd);
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if (shared_fd <= 0) {
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fprintf(stderr, "ERROR: improper buf fd\n");
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ret = -1;
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goto err_fd;
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}
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memset(&info, 0, sizeof(info));
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info.buffd = shared_fd;
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info.buflen = ION_BUFFER_LEN;
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ret = ion_import_buffer_fd(&info);
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if (ret < 0) {
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fprintf(stderr, "Failed: ion_use_buffer_fd\n");
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goto err_import;
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}
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map_buf = info.buffer;
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map_len = info.buflen;
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read_buffer(map_buf, map_len);
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/* Write probably new data to the same buffer again */
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map_len = ION_BUFFER_LEN;
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write_buffer(map_buf, map_len);
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err_import:
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ion_close_buffer_fd(&info);
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err_fd:
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err_recv:
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err_socket:
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closesocket(sockfd, SOCKET_NAME);
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return ret;
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}
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