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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
//#include <stdint.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include "ionutils.h"
#include "ipcsocket.h"
void write_buffer(void *buffer, unsigned long len)
{
int i;
unsigned char *ptr = (unsigned char *)buffer;
if (!ptr) {
fprintf(stderr, "<%s>: Invalid buffer...\n", __func__);
return;
}
printf("Fill buffer content:\n");
memset(ptr, 0xfd, len);
for (i = 0; i < len; i++)
printf("0x%x ", ptr[i]);
printf("\n");
}
void read_buffer(void *buffer, unsigned long len)
{
int i;
unsigned char *ptr = (unsigned char *)buffer;
if (!ptr) {
fprintf(stderr, "<%s>: Invalid buffer...\n", __func__);
return;
}
printf("Read buffer content:\n");
for (i = 0; i < len; i++)
printf("0x%x ", ptr[i]);
printf("\n");
}
int ion_export_buffer_fd(struct ion_buffer_info *ion_info)
{
int i, ret, ionfd, buffer_fd;
unsigned int heap_id;
unsigned long maplen;
unsigned char *map_buffer;
struct ion_allocation_data alloc_data;
struct ion_heap_query query;
struct ion_heap_data heap_data[MAX_HEAP_COUNT];
if (!ion_info) {
fprintf(stderr, "<%s>: Invalid ion info\n", __func__);
return -1;
}
/* Create an ION client */
ionfd = open(ION_DEVICE, O_RDWR);
if (ionfd < 0) {
fprintf(stderr, "<%s>: Failed to open ion client: %s\n",
__func__, strerror(errno));
return -1;
}
memset(&query, 0, sizeof(query));
query.cnt = MAX_HEAP_COUNT;
query.heaps = (unsigned long int)&heap_data[0];
/* Query ION heap_id_mask from ION heap */
ret = ioctl(ionfd, ION_IOC_HEAP_QUERY, &query);
if (ret < 0) {
fprintf(stderr, "<%s>: Failed: ION_IOC_HEAP_QUERY: %s\n",
__func__, strerror(errno));
goto err_query;
}
heap_id = MAX_HEAP_COUNT + 1;
for (i = 0; i < query.cnt; i++) {
if (heap_data[i].type == ion_info->heap_type) {
heap_id = heap_data[i].heap_id;
break;
}
}
if (heap_id > MAX_HEAP_COUNT) {
fprintf(stderr, "<%s>: ERROR: heap type does not exists\n",
__func__);
goto err_heap;
}
alloc_data.len = ion_info->heap_size;
alloc_data.heap_id_mask = 1 << heap_id;
alloc_data.flags = ion_info->flag_type;
/* Allocate memory for this ION client as per heap_type */
ret = ioctl(ionfd, ION_IOC_ALLOC, &alloc_data);
if (ret < 0) {
fprintf(stderr, "<%s>: Failed: ION_IOC_ALLOC: %s\n",
__func__, strerror(errno));
goto err_alloc;
}
/* This will return a valid buffer fd */
buffer_fd = alloc_data.fd;
maplen = alloc_data.len;
if (buffer_fd < 0 || maplen <= 0) {
fprintf(stderr, "<%s>: Invalid map data, fd: %d, len: %ld\n",
__func__, buffer_fd, maplen);
goto err_fd_data;
}
/* Create memory mapped buffer for the buffer fd */
map_buffer = (unsigned char *)mmap(NULL, maplen, PROT_READ|PROT_WRITE,
MAP_SHARED, buffer_fd, 0);
if (map_buffer == MAP_FAILED) {
fprintf(stderr, "<%s>: Failed: mmap: %s\n",
__func__, strerror(errno));
goto err_mmap;
}
ion_info->ionfd = ionfd;
ion_info->buffd = buffer_fd;
ion_info->buffer = map_buffer;
ion_info->buflen = maplen;
return 0;
munmap(map_buffer, maplen);
err_fd_data:
err_mmap:
/* in case of error: close the buffer fd */
if (buffer_fd)
close(buffer_fd);
err_query:
err_heap:
err_alloc:
/* In case of error: close the ion client fd */
if (ionfd)
close(ionfd);
return -1;
}
int ion_import_buffer_fd(struct ion_buffer_info *ion_info)
{
int buffd;
unsigned char *map_buf;
unsigned long map_len;
if (!ion_info) {
fprintf(stderr, "<%s>: Invalid ion info\n", __func__);
return -1;
}
map_len = ion_info->buflen;
buffd = ion_info->buffd;
if (buffd < 0 || map_len <= 0) {
fprintf(stderr, "<%s>: Invalid map data, fd: %d, len: %ld\n",
__func__, buffd, map_len);
goto err_buffd;
}
map_buf = (unsigned char *)mmap(NULL, map_len, PROT_READ|PROT_WRITE,
MAP_SHARED, buffd, 0);
if (map_buf == MAP_FAILED) {
printf("<%s>: Failed - mmap: %s\n",
__func__, strerror(errno));
goto err_mmap;
}
ion_info->buffer = map_buf;
ion_info->buflen = map_len;
return 0;
err_mmap:
if (buffd)
close(buffd);
err_buffd:
return -1;
}
void ion_close_buffer_fd(struct ion_buffer_info *ion_info)
{
if (ion_info) {
/* unmap the buffer properly in the end */
munmap(ion_info->buffer, ion_info->buflen);
/* close the buffer fd */
if (ion_info->buffd > 0)
close(ion_info->buffd);
/* Finally, close the client fd */
if (ion_info->ionfd > 0)
close(ion_info->ionfd);
}
}
int socket_send_fd(struct socket_info *info)
{
int status;
int fd, sockfd;
struct socketdata skdata;
if (!info) {
fprintf(stderr, "<%s>: Invalid socket info\n", __func__);
return -1;
}
sockfd = info->sockfd;
fd = info->datafd;
memset(&skdata, 0, sizeof(skdata));
skdata.data = fd;
skdata.len = sizeof(skdata.data);
status = sendtosocket(sockfd, &skdata);
if (status < 0) {
fprintf(stderr, "<%s>: Failed: sendtosocket\n", __func__);
return -1;
}
return 0;
}
int socket_receive_fd(struct socket_info *info)
{
int status;
int fd, sockfd;
struct socketdata skdata;
if (!info) {
fprintf(stderr, "<%s>: Invalid socket info\n", __func__);
return -1;
}
sockfd = info->sockfd;
memset(&skdata, 0, sizeof(skdata));
status = receivefromsocket(sockfd, &skdata);
if (status < 0) {
fprintf(stderr, "<%s>: Failed: receivefromsocket\n", __func__);
return -1;
}
fd = (int)skdata.data;
info->datafd = fd;
return status;
}
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