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Add partial dumping when free space is not enough

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This commit is contained in:
Kostas Missos 2018-05-03 19:23:26 +03:00
parent e7373548fa
commit c0bad45cde
2 changed files with 121 additions and 10 deletions
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4
ipl/ffconf.h
View file

@ -15,7 +15,7 @@
/ and optional writing functions as well. */
#define FF_FS_MINIMIZE 3
#define FF_FS_MINIMIZE 0
/* This option defines minimization level to remove some basic API functions.
/
/ 0: Basic functions are fully enabled.
@ -200,7 +200,7 @@
/ disk_ioctl() function. */
#define FF_FS_NOFSINFO 0
#define FF_FS_NOFSINFO 1
/* If you need to know correct free space on the FAT32 volume, set bit 0 of this
/ option, and f_getfree() function at first time after volume mount will force
/ a full FAT scan. Bit 1 controls the use of last allocated cluster number.

127
ipl/main.c
View file

@ -384,12 +384,63 @@ int dump_emmc_part(char *sd_path, sdmmc_storage_t *storage, emmc_part_t *part)
{
static const u32 FAT32_FILESIZE_LIMIT = 0xFFFFFFFF;
static const u32 MULTIPART_SPLIT_SIZE = (1u << 31);
static const u32 SECTORS_TO_MB_COEFF = 0x800;
u32 totalSectors = part->lba_end - part->lba_start + 1;
u32 currPartIdx = 0;
u32 numSplitParts = 0;
u32 maxSplitParts = 0;
int isSmallSdCard = 0;
int partialDumpInProgress = 0;
char* outFilename = sd_path;
u32 sdPathLen = strlen(sd_path);
u32 numSplitParts = 0;
if ((sd_fs.fs_type != FS_EXFAT) && totalSectors > (FAT32_FILESIZE_LIMIT/NX_EMMC_BLOCKSIZE))
FIL partialIdxFp;
char partialIdxFilename[12];
memcpy(partialIdxFilename, "partial.idx", 11);
partialIdxFilename[11] = 0;
gfx_printf(&gfx_con, "SD Card free space: %dMB, Total dump size %dMB\n",
sd_fs.free_clst * sd_fs.csize / SECTORS_TO_MB_COEFF,
totalSectors / SECTORS_TO_MB_COEFF);
// Check if the USER partition or the RAW eMMC fits the sd card free space
if (totalSectors > (sd_fs.free_clst * sd_fs.csize))
{
isSmallSdCard = 1;
gfx_printf(&gfx_con, "%kSD card free space is smaller than dump total size.%k\n", 0xFF00BAFF, 0xFFFFFFFF);
maxSplitParts = (sd_fs.free_clst * sd_fs.csize) / (MULTIPART_SPLIT_SIZE / 512);
if (!maxSplitParts)
{
gfx_printf(&gfx_con, "%kNot enough free space for partial dumping.%k\n", 0xFF0000FF, 0xFFFFFFFF);
return 0;
}
}
// Check if we continueing a previous raw eMMC dump in progress.
if (isSmallSdCard)
{
if (f_open(&partialIdxFp, partialIdxFilename, FA_READ) == FR_OK)
{
gfx_printf(&gfx_con, "%kFound partial dump in progress. Continuing...%k\n", 0xFF14FDAE, 0xFFFFFFFF);
partialDumpInProgress = 1;
f_read(&partialIdxFp, &currPartIdx, 4, NULL);
f_close(&partialIdxFp);
// Increase maxSplitParts to accommodate previously dumped parts
maxSplitParts += currPartIdx;
}
else
gfx_printf(&gfx_con, "%kContinuing with partial dumping...%k\n", 0xFF00BAFF, 0xFFFFFFFF);
}
// Check if filesystem is FAT32 or the free space is smaller and dump in parts
if (((sd_fs.fs_type != FS_EXFAT) || isSmallSdCard) && totalSectors > (FAT32_FILESIZE_LIMIT/NX_EMMC_BLOCKSIZE))
{
static const u32 MULTIPART_SPLIT_SECTORS = MULTIPART_SPLIT_SIZE/NX_EMMC_BLOCKSIZE;
numSplitParts = (totalSectors+MULTIPART_SPLIT_SECTORS-1)/MULTIPART_SPLIT_SECTORS;
@ -398,14 +449,28 @@ int dump_emmc_part(char *sd_path, sdmmc_storage_t *storage, emmc_part_t *part)
memcpy(outFilename, sd_path, sdPathLen);
outFilename[sdPathLen++] = '.';
outFilename[sdPathLen] = '0';
if (numSplitParts >= 10)
if (!partialDumpInProgress)
{
outFilename[sdPathLen+1] = '0';
outFilename[sdPathLen+2] = 0;
outFilename[sdPathLen] = '0';
if (numSplitParts >= 10)
{
outFilename[sdPathLen+1] = '0';
outFilename[sdPathLen+2] = 0;
}
else
outFilename[sdPathLen+1] = 0;
}
// Continue from where we left, if partial dump in proggress.
else
outFilename[sdPathLen+1] = 0;
{
if (numSplitParts >= 10 && currPartIdx < 10)
{
outFilename[sdPathLen] = '0';
itoa(currPartIdx, &outFilename[sdPathLen+1], 10);
}
else
itoa(currPartIdx, &outFilename[sdPathLen], 10);
}
}
FIL fp;
@ -417,8 +482,15 @@ int dump_emmc_part(char *sd_path, sdmmc_storage_t *storage, emmc_part_t *part)
u32 lba_curr = part->lba_start;
u32 bytesWritten = 0;
u32 currPartIdx = 0;
u32 prevPct=200;
// Continue from where we left, if partial dump in proggress.
if (partialDumpInProgress)
{
lba_curr += currPartIdx * (MULTIPART_SPLIT_SIZE / NX_EMMC_BLOCKSIZE);
totalSectors -= currPartIdx * (MULTIPART_SPLIT_SIZE / NX_EMMC_BLOCKSIZE);
}
while(totalSectors > 0)
{
if (numSplitParts != 0 && bytesWritten >= MULTIPART_SPLIT_SIZE)
@ -435,6 +507,33 @@ int dump_emmc_part(char *sd_path, sdmmc_storage_t *storage, emmc_part_t *part)
else
itoa(currPartIdx, &outFilename[sdPathLen], 10);
// More parts to dump that do not currently fit the sd card free space
if (isSmallSdCard && currPartIdx >= maxSplitParts)
{
// Create partial dump index file
if (f_open(&partialIdxFp, partialIdxFilename, FA_CREATE_ALWAYS | FA_WRITE) == FR_OK)
{
f_write(&partialIdxFp, &currPartIdx, 4, NULL);
f_close(&partialIdxFp);
}
else
{
gfx_printf(&gfx_con, "%k\nError creating partial.idx file.%k\n", 0xFF0000FF, 0xFFFFFFFF);
free(buf);
return 0;
}
gfx_puts(&gfx_con, "\n1. Press any key and Power Switch from main menu.\n\
2. Move the files from SD card to free space.\n \
Don\'t move the partial.idx file!\n\
3. Unplug and re-plug USB while pressing Vol+.\n\
4. Run hekate - ipl again and press Dump RAW eMMC to continue");
free(buf);
return 1;
}
if (f_open(&fp, outFilename, FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)
{
free(buf);
@ -478,6 +577,13 @@ int dump_emmc_part(char *sd_path, sdmmc_storage_t *storage, emmc_part_t *part)
out:;
free(buf);
f_close(&fp);
// Partial dump done. Remove partial dump index file.
if(partialDumpInProgress)
{
f_unlink(partialIdxFilename);
gfx_printf(&gfx_con, "\n\nYou can now join the files and get the complete raw eMMC dump.\n");
}
return 1;
}
@ -499,6 +605,11 @@ static void dump_emmc_selected(dumpType_t dumpType)
gfx_printf(&gfx_con, "%kFailed to mount SD card (make sure that it is inserted).%k\n", 0xFF0000FF, 0xFFFFFFFF);
goto out;
}
else
{
// Get SD Card free space for partial dumping
f_getfree("", &sd_fs.free_clst, NULL);
}
sdmmc_storage_t storage;
sdmmc_t sdmmc;