[SOLVED] Rewriting to a block on disk?

[era86]

I am working on a project in C working with the Ext2 FS and I want to write some data stored in a variable back to the disk. For example:

I read in data from disk into a buffer:

read( disk, 1024, buf );

Cast the buffer:

BLOCK_INFO * block;
block = (BLOCK_INFO *)buf;

Make some changes:

block->name = "askdjf"
block->var = 34;

Now I want to rewrite this to the disk. Will this work?

strcpy( buf, (char *)block );
write (...)

What I have currently compiles, but I don't think it works correctly. Any feedback helps. Thanks!

[era86]

Stupid mistake. I guess I can just write buf right back to the disk. Since "block" essentially points to "buf", any changes to "block" is done to "buf" as well. Should've known.