diff options
| author | Carl Hetherington <cth@carlh.net> | 2019-06-11 22:27:22 +0000 |
|---|---|---|
| committer | Carl Hetherington <cth@carlh.net> | 2019-06-11 22:27:22 +0000 |
| commit | b47ab2d06e73fa7d8b9827e05b3aae6fc2c71279 (patch) | |
| tree | e0c5b3d9f9eaac678e613178dead8fd96c42fc13 | |
| parent | 733b2c40d7121900e339bee8784977467a9fe8c9 (diff) | |
Possibly dubious patch to allow writing to partitions on Windows.
| -rw-r--r-- | blockdev/windows/file_windows.c | 30 | ||||
| -rw-r--r-- | blockdev/windows/file_windows.h | 4 |
2 files changed, 27 insertions, 7 deletions
diff --git a/blockdev/windows/file_windows.c b/blockdev/windows/file_windows.c index 9142132..291fc11 100644 --- a/blockdev/windows/file_windows.c +++ b/blockdev/windows/file_windows.c @@ -40,6 +40,11 @@ /**@brief Default filename.*/ static const char *fname = "ext2"; +/**@brief If part_length == 0 this is the offset (in bytes) of the partition to write to */ +static uint64_t part_offset = 0; +/**@brief Size (in bytes) of the partition to write to, or 0 to use the whole disk */ +static uint64_t part_size = 0; + /**@brief IO block size.*/ #define EXT4_IORAW_BSIZE 512 @@ -87,14 +92,22 @@ static int file_open(struct ext4_blockdev *bdev) return EIO; } - disk_size = pdg.Cylinders.QuadPart * (ULONG)pdg.TracksPerCylinder * - (ULONG)pdg.SectorsPerTrack * (ULONG)pdg.BytesPerSector; - _filedev.bdif->ph_bsize = pdg.BytesPerSector; - _filedev.bdif->ph_bcnt = disk_size / pdg.BytesPerSector; - _filedev.part_offset = 0; - _filedev.part_size = disk_size; + if (part_size == 0) { + /* whole disk */ + disk_size = pdg.Cylinders.QuadPart * (ULONG)pdg.TracksPerCylinder * + (ULONG)pdg.SectorsPerTrack * (ULONG)pdg.BytesPerSector; + + _filedev.bdif->ph_bcnt = disk_size / pdg.BytesPerSector; + _filedev.part_offset = 0; + _filedev.part_size = disk_size; + } else { + /* specified partition */ + _filedev.bdif->ph_bcnt = part_size / pdg.BytesPerSector; + _filedev.part_offset = part_offset; + _filedev.part_size = part_size; + } return EOK; } @@ -167,4 +180,9 @@ void file_windows_name_set(const char *n) } /******************************************************************************/ +void file_windows_partition_set(uint64_t offset, uint64_t size) +{ + part_offset = offset; + part_size = size; +} #endif diff --git a/blockdev/windows/file_windows.h b/blockdev/windows/file_windows.h index 013d1f3..8693fdd 100644 --- a/blockdev/windows/file_windows.h +++ b/blockdev/windows/file_windows.h @@ -37,8 +37,10 @@ /**@brief IO raw blockdev get.*/ struct ext4_blockdev *file_windows_dev_get(void); -/**@brief Set filrname to open.*/ +/**@brief Set filename to open.*/ void file_windows_name_set(const char *n); +/**@brief Set partition to use within disk */ +void file_windows_partition_set(uint64_t offset, uint64_t size); #endif /* FILE_WINDOWS_H_ */ |