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Instead of filtering mountpoints in the LayeredFS payload by their first letters, change known mountpoints not starting with "r" to start with "r" throughout the code

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This commit is contained in:
Aurora Wright 2017-04-28 00:33:30 +02:00
parent c7e7dd8248
commit db33c315f2
2 changed files with 19 additions and 7 deletions
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2
injector/patches/romfsredir.s
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@ -54,8 +54,6 @@ _start:
stmfd sp!, {r0-r12, lr}
ldrb r12, [r1]
cmp r12, #0x72 ; 'r', should include "rom:", "rom2:" and "rex:"
cmpne r12, #0x70 ; 'p', should include "patch:"
cmpne r12, #0x65 ; 'e', should include "ext:"
bne endRedir
sub sp, sp, #0x400
pathRedir:

24
injector/source/patcher.c
View File

@ -13,7 +13,7 @@ static u32 patchMemory(u8 *start, u32 size, const void *pattern, u32 patSize, in
{
u32 i;
for(i = 0; i < count; i++)
for(i = 0; !count || i < count; i++)
{
u8 *found = memsearch(start, pattern, size, patSize);
@ -510,7 +510,7 @@ exit:
return ret;
}
static inline bool patchLayeredFs(u64 progId, u8 *code, u32 size)
static inline bool patchLayeredFs(u64 progId, u8 *code, u32 size, u32 textSize)
{
/* Here we look for "/luma/titles/[u64 titleID in hex, uppercase]/romfs"
If it exists it should be a folder containing ROMFS files */
@ -530,8 +530,22 @@ static inline bool patchLayeredFs(u64 progId, u8 *code, u32 size)
fsOpenFileDirectly = 0xFFFFFFFF,
payloadOffset;
if(!findLayeredFsSymbols(code, size, &fsMountArchive, &fsRegisterArchive, &fsTryOpenFile, &fsOpenFileDirectly) ||
!findLayeredFsPayloadOffset(code, size, &payloadOffset)) return false;
if(!findLayeredFsSymbols(code, textSize, &fsMountArchive, &fsRegisterArchive, &fsTryOpenFile, &fsOpenFileDirectly) ||
!findLayeredFsPayloadOffset(code, textSize, &payloadOffset)) return false;
static const char *updateRomFsMounts[] = { "patch:",
"ext:" };
//Change update RomFS mountpoints to start with "r"
for(u32 i = 0, ret = 0; i < sizeof(updateRomFsMounts) / sizeof(char *) && !ret; i++)
{
ret = patchMemory(code, size,
updateRomFsMounts[i],
strnlen(updateRomFsMounts[i], 255), 0,
"r",
1, 0
);
}
//Setup the payload
u8 *payload = code + payloadOffset;
@ -840,7 +854,7 @@ void patchCode(u64 progId, u16 progVer, u8 *code, u32 size, u32 textSize, u32 ro
if(!loadTitleCodeSection(progId, code, size) ||
!applyCodeIpsPatch(progId, code, size) ||
!loadTitleLocaleConfig(progId, &regionId, &languageId) ||
!patchLayeredFs(progId, code, textSize)) goto error;
!patchLayeredFs(progId, code, size, textSize)) goto error;
if(regionId != 0xFF)
{