SceMemDisk: Difference between revisions
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(Created page with "= Module = {| class="wikitable" ! Version !! World !! Privilege |- | 0.931-0.996 || Non-secure || Kernel |} Example code <source lang="C"> void md_access_test(void){ int...") |
(Add some comments, link to reimplementation for modern firmwares.) |
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SceMemDisk is a VFS driver for virtual memdisk block devices backed by user space memblocks. | |||
Re-implemented [https://github.com/bythos14/SceMemDisk here] | |||
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} | } | ||
</source> | </source> | ||
[[Category:ARM]] | |||
[[Category:Kernel]] | |||
[[Category:Modules]] | |||
Latest revision as of 04:29, 2 January 2025
SceMemDisk is a VFS driver for virtual memdisk block devices backed by user space memblocks.
Re-implemented here
Module
| Version | World | Privilege |
|---|---|---|
| 0.931-0.996 | Non-secure | Kernel |
Example code
void md_access_test(void){
int md_res;
SceUID memid, fd;
memid = sceKernelAllocMemBlock("md_buffer", 0x0C20D060, 0x10000, NULL);
md_res = 0xDEADBEEF;
res = sceIoDevctl("md0:", 1, &memid, sizeof(memid), &md_res, sizeof(md_res));
sceClibPrintf("sceIoDevctl: 0x%X md_res: 0x%X\n", res, md_res);
res = sceIoRemove("md0:0");
sceClibPrintf("sceIoRemove: 0x%X\n", res);
fd = sceIoOpen("md0:0", SCE_O_WRONLY, 0);
sceClibPrintf("sceIoOpen: 0x%X\n", fd);
if(fd >= 0){
char buf[0x200];
sceClibStrncpy(buf, "Hello", 0x200);
res = sceIoWrite(fd, buf, sizeof(buf));
sceIoClose(fd);
sceClibPrintf("sceIoWrite: 0x%X\n", res);
}
fd = sceIoOpen("md0:0", SCE_O_RDONLY, 0);
sceClibPrintf("sceIoOpen: 0x%X\n", fd);
if(fd >= 0){
char buf[0x200];
sceClibMemset(buf, 0, sizeof(buf));
res = sceIoRead(fd, buf, 0x200);
sceIoClose(fd);
sceClibPrintf("sceIoRead: 0x%X\n", res);
sceClibPrintf("Msg: %s\n", buf);
}
res = sceIoRemove("md0:0");
sceClibPrintf("sceIoRemove: 0x%X\n", res);
res = sceIoRemove("md0:");
sceClibPrintf("sceIoRemove: 0x%X\n", res);
sceKernelFreeMemBlock(memid);
}