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Fix certain NDS roms not mounting properly

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... fixes #186
This commit is contained in:
d0k3 2017-08-26 16:11:36 +02:00
parent 19ecbd6bb0
commit e50a0af7ef
1 changed files with 1 additions and 4 deletions
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5
source/game/nds.c
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@ -108,12 +108,9 @@ u32 FindNitroRomDir(u32 dirid, u32* fileid, u8** fnt_entry, TwlHeader* hdr, u8*
*fileid = fnt_dir->file0_id;
// check subtable / directory validity
if (*fnt_entry >= fnt + hdr->fnt_size) return 1;
u8* subtbl_end = NULL;
u32 fid = *fileid;
for (subtbl_end = *fnt_entry; *subtbl_end && (subtbl_end < fnt + hdr->fnt_size); subtbl_end++);
for (u8* entry = *fnt_entry; *entry; entry = FNT_ENTRY_NEXT(entry)) {
if (entry > subtbl_end) return 1; // corrupt subtable
if (entry >= fnt + hdr->fnt_size) return 1; // corrupt subtable
if (fat_lut[fid].start_address > fat_lut[fid].end_address) return 1; // corrupt fat
if (!FNT_ENTRY_ISDIR(entry)) fid++;
}