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dosfs: Fix for no space left on device condition

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The file size was wrong in the no space left on device condition.  This
resulted in turn in a read of an invalid block which lead to an EIO
error status.
This commit is contained in:
Sebastian Huber
2012-06-03 13:06:51 +02:00
parent 39ee704e75
commit 96b1d7fcfe
1 changed files with 5 additions and 3 deletions
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8
cpukit/libfs/src/dosfs/fat_file.c
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@@ -552,9 +552,10 @@ fat_file_extend(
/* check wether we satisfied request for 'cls2add' clusters */
if (cls2add != cls_added)
*a_length = new_length -
((cls2add - cls_added - 1) << fs_info->vol.bpc_log2) -
(bytes2add & (fs_info->vol.bpc - 1));
{
new_length -= bytes2add & (fs_info->vol.bpc - 1);
new_length -= (cls2add - cls_added) << fs_info->vol.bpc_log2;
}
/* add new chain to the end of existed */
if ( fat_fd->fat_file_size == 0 )
@@ -603,6 +604,7 @@ fat_file_extend(
}
}
*a_length = new_length;
fat_fd->fat_file_size = new_length;
return RC_OK;