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sysmodules: update ifile, process_patches

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This commit is contained in:
TuxSH 2021-01-16 21:16:06 +00:00
parent 2a947b5c42
commit 883c5e25dd
6 changed files with 105 additions and 18 deletions
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62
sysmodules/loader/source/ifile.c
View File

@ -11,6 +11,16 @@ Result IFile_Open(IFile *file, FS_ArchiveID archiveId, FS_Path archivePath, FS_P
return res;
}
Result IFile_OpenFromArchive(IFile *file, FS_Archive archive, FS_Path filePath, u32 flags)
{
Result res;
res = FSUSER_OpenFile(&file->handle, archive, filePath, flags, 0);
file->pos = 0;
file->size = 0;
return res;
}
Result IFile_Close(IFile *file)
{
return FSFILE_Close(file->handle);
@ -21,7 +31,16 @@ Result IFile_GetSize(IFile *file, u64 *size)
Result res;
res = FSFILE_GetSize(file->handle, size);
file->size = *size;
if (R_SUCCEEDED(res)) file->size = *size;
return res;
}
Result IFile_SetSize(IFile *file, u64 size)
{
Result res;
res = FSFILE_SetSize(file->handle, size);
if (R_SUCCEEDED(res)) file->size = size;
return res;
}
@ -45,7 +64,7 @@ Result IFile_Read(IFile *file, u64 *total, void *buffer, u32 len)
while (1)
{
res = FSFILE_Read(file->handle, &read, file->pos, buf, left);
if (R_FAILED(res))
if (R_FAILED(res) || read == 0)
{
break;
}
@ -63,3 +82,42 @@ Result IFile_Read(IFile *file, u64 *total, void *buffer, u32 len)
*total = cur;
return res;
}
Result IFile_Write(IFile *file, u64 *total, const void *buffer, u32 len, u32 flags)
{
u32 written;
u32 left;
char *buf;
u64 cur;
Result res;
if (len == 0)
{
*total = 0;
return 0;
}
buf = (char *)buffer;
cur = 0;
left = len;
while (1)
{
res = FSFILE_Write(file->handle, &written, file->pos, buf, left, flags);
if (R_FAILED(res))
{
break;
}
cur += written;
file->pos += written;
if (written == left)
{
break;
}
buf += written;
left -= written;
}
*total = cur;
return res;
}

13
sysmodules/loader/source/ifile.h
View File

@ -2,14 +2,19 @@
#include <3ds/types.h>
#define PATH_MAX 255
typedef struct
{
Handle handle;
u64 pos;
u64 size;
Handle handle;
u64 pos;
u64 size;
} IFile;
Result IFile_Open(IFile *file, FS_ArchiveID archiveId, FS_Path archivePath, FS_Path filePath, u32 flags);
Result IFile_OpenFromArchive(IFile *file, FS_Archive archive, FS_Path filePath, u32 flags);
Result IFile_Close(IFile *file);
Result IFile_GetSize(IFile *file, u64 *size);
Result IFile_Read(IFile *file, u64 *total, void *buffer, u32 len);
Result IFile_SetSize(IFile *file, u64 size);
Result IFile_Read(IFile *file, u64 *total, void *buffer, u32 len);
Result IFile_Write(IFile *file, u64 *total, const void *buffer, u32 len, u32 flags);

3
sysmodules/rosalina/include/ifile.h
View File

@ -41,5 +41,6 @@ Result IFile_Open(IFile *file, FS_ArchiveID archiveId, FS_Path archivePath, FS_P
Result IFile_OpenFromArchive(IFile *file, FS_Archive archive, FS_Path filePath, u32 flags);
Result IFile_Close(IFile *file);
Result IFile_GetSize(IFile *file, u64 *size);
Result IFile_SetSize(IFile *file, u64 size);
Result IFile_Read(IFile *file, u64 *total, void *buffer, u32 len);
Result IFile_Write(IFile *file, u64 *total, void *buffer, u32 len, u32 flags);
Result IFile_Write(IFile *file, u64 *total, const void *buffer, u32 len, u32 flags);

4
sysmodules/rosalina/include/process_patches.h
View File

@ -29,5 +29,7 @@
#include <3ds/types.h>
#include "menu.h"
typedef Result(* OperateOnProcessCb)(Handle processHandle, u32 textSz, u32 roSz, u32 rwSz);
Result OpenProcessByName(const char *name, Handle *h);
Result PatchProcessByName(const char *name, Result (*func)(u32 size));
Result OperateOnProcessByName(const char *name, OperateOnProcessCb func); // doesn't operate on the heap

13
sysmodules/rosalina/source/ifile.c
View File

@ -57,7 +57,16 @@ Result IFile_GetSize(IFile *file, u64 *size)
Result res;
res = FSFILE_GetSize(file->handle, size);
file->size = *size;
if (R_SUCCEEDED(res)) file->size = *size;
return res;
}
Result IFile_SetSize(IFile *file, u64 size)
{
Result res;
res = FSFILE_SetSize(file->handle, size);
if (R_SUCCEEDED(res)) file->size = size;
return res;
}
@ -100,7 +109,7 @@ Result IFile_Read(IFile *file, u64 *total, void *buffer, u32 len)
return res;
}
Result IFile_Write(IFile *file, u64 *total, void *buffer, u32 len, u32 flags)
Result IFile_Write(IFile *file, u64 *total, const void *buffer, u32 len, u32 flags)
{
u32 written;
u32 left;

28
sysmodules/rosalina/source/process_patches.c
View File

@ -59,20 +59,32 @@ Result OpenProcessByName(const char *name, Handle *h)
return 0;
}
Result PatchProcessByName(const char *name, Result (*func)(u32 size))
Result OperateOnProcessByName(const char *name, OperateOnProcessCb func)
{
Result res;
Handle processHandle;
OpenProcessByName(name, &processHandle);
res = OpenProcessByName(name, &processHandle);
s64 textTotalRoundedSize = 0, startAddress = 0;
svcGetProcessInfo(&textTotalRoundedSize, processHandle, 0x10002); // only patch .text
svcGetProcessInfo(&startAddress, processHandle, 0x10005);
if(R_FAILED(res = svcMapProcessMemoryEx(processHandle, 0x00100000, (u32) startAddress, textTotalRoundedSize)))
if (R_FAILED(res))
return res;
res = func(textTotalRoundedSize);
s64 startAddress, textSize, roSize, rwSize;
svcUnmapProcessMemoryEx(processHandle, 0x00100000, textTotalRoundedSize);
svcGetProcessInfo(&textSize, processHandle, 0x10002); // rounded sizes
svcGetProcessInfo(&roSize, processHandle, 0x10003);
svcGetProcessInfo(&rwSize, processHandle, 0x10004); // data and bss
svcGetProcessInfo(&startAddress, processHandle, 0x10005);
// NOTE: we suppose .text, .rodata, .data+.bss are contiguous & in that order
u32 totalSize = (u32)(textSize + roSize + rwSize);
if (R_FAILED(res = svcMapProcessMemoryEx(processHandle, 0x00100000, (u32) startAddress, totalSize)))
{
svcCloseHandle(processHandle);
return res;
}
res = func(processHandle, (u32)textSize, (u32)roSize, (u32)rwSize);
svcUnmapProcessMemoryEx(processHandle, 0x00100000, totalSize);
return res;
}