Reading directory from CD

[jum]

Howdy ppl.

I'm trying to get a directory listing of the CD/CDR, using libcdvd 1.5:

strcpy(pathname, "/");

num_files = CDVD_GetDir(pathname, NULL, CDVD_GET_FILES_AND_DIRS, TocEntryList,4000, pathname);

num_files is set to the correct number of files in the root dir of the CD, however, when I try to get the actual directory entry names using:

for(i=0; i<num_files; i++)
printf("%s\n", TocEntryList.filename);

the filename is blank !!!

I've been stuck on this for literally months now, also having tried older versions of libcdvd, and the fioDopen() function.

Any help appreciated.

- jum

[t0mb0la]

Hi Jum,

Do you have TocEntryList aligned to 64 bytes?

i.e:

Code: Select all

	TocEntry TocEntryList[4000] __attribute__((aligned(64)));

or

Code: Select all

 struct TocEntry *TocEntryList = (struct TocEntry *) memalign(64, sizeof(struct TocEntry) * 4000);

Other than that, are you calling CDVD_FlushCache(); before CDVD_GetDir(...); ?

Can't think of any other reasons why it should be misbehaving for you.

[jum]

oops. aligned to 16 bytes:

struct TocEntry tocEntries[MAX_DIR_ENTRIES] __attribute__((aligned(16)));

I'll try align to 64 and use CDVD_FlushCache()

Damn, I probably says to align to 64 in the PDF manual somewhere :/

Tx tombola

[jum]

... no luck :(

No mention of aligning 64 in the PDF manual.

Strange thing is that the CDVD_GetDir() returns the correct directory/file count, but the target TocEntry struct data just doesn't get filled.

Reading a file off the CD also works OK.

Perhaps my PS2 dev setup is a bit rotten.

[J.F.]

strcpy(pathname, "/");

num_files = CDVD_GetDir(pathname, NULL, CDVD_GET_FILES_AND_DIRS, TocEntryList,4000, pathname);

You might be getting messed up due to the pathname. ps2menu.c uses the call above like this:

num_cd_files = CDVD_GetDir(CDpath, NULL, CDVD_GET_FILES_AND_DIRS, (void *)TocEntryList,MAX_ENTRY, NULL);

Note that they pass NULL for new_pathname. Try that with your code and see what happens.