libretro/bk-emulator
1
0
Fork 0
mirror of https://github.com/libretro/bk-emulator.git synced 2024-11-27 02:40:37 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Use FILE functions instead of old deprecated functions like open/write.

Browse Source 
(It also no longer requires mmap support)
This commit is contained in:
gameblabla 2019-02-24 04:11:21 +01:00
parent b6189836fe
commit 13bd0c0e2a
No known key found for this signature in database
GPG Key ID: B24EFBB23B5F76CB
1 changed files with 57 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
disk.c
View File

@ -16,7 +16,7 @@
/* Why bother, let's memory-map the files! */
typedef struct {
unsigned length;
unsigned int length;
unsigned short * image;
unsigned short * ptr;
unsigned char track;
@ -35,29 +35,64 @@ static int selected = -1;
void do_disk_io(int drive, int blkno, int nwords, int ioaddr);
void disk_open(disk_t * pdt, char * name) {
int fd = open(name, O_RDWR|O_BINARY);
if (fd == -1) {
/* Pretty much had to rewrite it for portability rofl. - Gameblabla
* This does not seem to handle writes to the file.
* */
void disk_open(disk_t * pdt, char * name)
{
FILE* fp;
int result;
/* First, we check if the file exists. */
fp = fopen(name, "rb");
if (!fp)
{
/* It doesn't so let's exit right away. */
perror(name);
return;
}
else
fclose(fp);
fp = fopen(name, "r+b");
if (!fp)
{
/* Open file as Read-only */
fp = fopen(name, "rb");
if (!fp)
{
perror(name);
return;
}
pdt->ro = 1;
fd = open(name, O_RDONLY|O_BINARY);
}
if (fd == -1) {
perror(name);
return;
}
pdt->length = lseek(fd, 0, SEEK_END);
/* Determine size of file*/
fseek(fp , 0 , SEEK_END );
pdt->length = ftell (fp);
fseek(fp , 0 , SEEK_SET );
if (pdt->length == -1) perror("seek");
if (pdt->length % SECSIZE) {
if (pdt->length % SECSIZE)
{
fprintf(stderr, _("%s is not an integer number of blocks: %d bytes\n"), name, pdt->length);
close(fd);
fclose(fp);
return;
}
pdt->image = mmap(0, pdt->length, PROT_READ | (pdt->ro ? 0 : PROT_WRITE), MAP_SHARED, fd, 0);
if (pdt->image == MAP_FAILED) {
pdt->image = 0;
pdt->image = malloc(pdt->length);
if (pdt->image == NULL)
{
fprintf(stderr, _("Unable to malloc. Out of memory ?\n"));
fclose(fp);
perror(name);
}
if (pdt->ro) {
result = fread (pdt->image, sizeof(unsigned char), pdt->length, fp);
if (fp) fclose(fp);
if (pdt->ro)
{
fprintf(stderr, _("%s will be read only\n"), name);
}
}
@ -85,10 +120,14 @@ int disk_init() {
void disk_finish() {
int i;
for (i = 0; i < 4; i++) {
for (i = 0; i < 4; i++)
{
if (!disks[i].image)
continue;
munmap(disks[i].image, disks[i].length);
else
{
if (disks[i].length > 0) free(disks[i].image);
}
}
}