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Use dev_offset on Unix IO 

Add dev_offset on operations
pull/48/head
Konstantin Germanov 2022-06-28 06:54:14 -04:00
parent 1980c1a3dd
commit 8b11465061
1 changed files with 12 additions and 4 deletions
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16
libntfs-3g/unix_io.c
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@ -244,7 +244,7 @@ static int ntfs_device_unix_io_close(struct ntfs_device *dev)
static s64 ntfs_device_unix_io_seek(struct ntfs_device *dev, s64 offset,
int whence)
{
return lseek(DEV_FD(dev), offset, whence);
return lseek(DEV_FD(dev), offset + dev->dev_offset, whence);
}
/**
@ -298,7 +298,7 @@ static s64 ntfs_device_unix_io_write(struct ntfs_device *dev, const void *buf,
static s64 ntfs_device_unix_io_pread(struct ntfs_device *dev, void *buf,
s64 count, s64 offset)
{
return pread(DEV_FD(dev), buf, count, offset);
return pread(DEV_FD(dev), buf, count, offset + dev->dev_offset);
}
/**
@ -320,7 +320,7 @@ static s64 ntfs_device_unix_io_pwrite(struct ntfs_device *dev, const void *buf,
return -1;
}
NDevSetDirty(dev);
return pwrite(DEV_FD(dev), buf, count, offset);
return pwrite(DEV_FD(dev), buf, count, offset + dev->dev_offset);
}
/**
@ -356,7 +356,15 @@ static int ntfs_device_unix_io_sync(struct ntfs_device *dev)
*/
static int ntfs_device_unix_io_stat(struct ntfs_device *dev, struct stat *buf)
{
return fstat(DEV_FD(dev), buf);
int res = fstat(DEV_FD(dev), buf);
if (res == 0) {
buf->st_size -= dev->dev_offset;
buf->st_blocks = ((buf->st_blksize == 0) ?
0 : buf->st_size / buf->st_blksize);
}
return res;
}
/**