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// SPDX-License-Identifier: GPL-2.0-only
/*
* ionapp_export.c
*
* It is a user space utility to create and export android
* ion memory buffer fd to another process using unix domain socket as IPC.
* This acts like a server for ionapp_import(client).
* So, this server has to be started first before the client.
*
* Copyright (C) 2017 Pintu Kumar <pintu.ping@gmail.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include "ionutils.h"
#include "ipcsocket.h"
void print_usage(int argc, char *argv[])
{
printf("Usage: %s [-h <help>] [-i <heap id>] [-s <size in bytes>]\n",
argv[0]);
}
int main(int argc, char *argv[])
{
int opt, ret, status, heapid;
int sockfd, client_fd, shared_fd;
unsigned char *map_buf;
unsigned long map_len, heap_type, heap_size, flags;
struct ion_buffer_info info;
struct socket_info skinfo;
if (argc < 2) {
print_usage(argc, argv);
return -1;
}
heap_size = 0;
flags = 0;
heap_type = ION_HEAP_TYPE_SYSTEM;
while ((opt = getopt(argc, argv, "hi:s:")) != -1) {
switch (opt) {
case 'h':
print_usage(argc, argv);
exit(0);
break;
case 'i':
heapid = atoi(optarg);
switch (heapid) {
case 0:
heap_type = ION_HEAP_TYPE_SYSTEM;
break;
case 1:
heap_type = ION_HEAP_TYPE_SYSTEM_CONTIG;
break;
default:
printf("ERROR: heap type not supported\n");
exit(1);
}
break;
case 's':
heap_size = atoi(optarg);
break;
default:
print_usage(argc, argv);
exit(1);
break;
}
}
if (heap_size <= 0) {
printf("heap_size cannot be 0\n");
print_usage(argc, argv);
exit(1);
}
printf("heap_type: %ld, heap_size: %ld\n", heap_type, heap_size);
info.heap_type = heap_type;
info.heap_size = heap_size;
info.flag_type = flags;
/* This is server: open the socket connection first */
/* Here; 1 indicates server or exporter */
status = opensocket(&sockfd, SOCKET_NAME, 1);
if (status < 0) {
fprintf(stderr, "<%s>: Failed opensocket.\n", __func__);
goto err_socket;
}
skinfo.sockfd = sockfd;
ret = ion_export_buffer_fd(&info);
if (ret < 0) {
fprintf(stderr, "FAILED: ion_get_buffer_fd\n");
goto err_export;
}
client_fd = info.ionfd;
shared_fd = info.buffd;
map_buf = info.buffer;
map_len = info.buflen;
write_buffer(map_buf, map_len);
/* share ion buf fd with other user process */
printf("Sharing fd: %d, Client fd: %d\n", shared_fd, client_fd);
skinfo.datafd = shared_fd;
skinfo.buflen = map_len;
ret = socket_send_fd(&skinfo);
if (ret < 0) {
fprintf(stderr, "FAILED: socket_send_fd\n");
goto err_send;
}
err_send:
err_export:
ion_close_buffer_fd(&info);
err_socket:
closesocket(sockfd, SOCKET_NAME);
return 0;
}
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