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View Code? Open in Web Editor NEWA simple FUSE filesystem implemented with inodes
A simple FUSE filesystem implemented with inodes
creating one file works, creating additional files does not. debugged this in gdb. it's because the initial validity check at the beginning of vfs_create fails
When attempting a large write to a file, such as
dd if=/dev/zero of=test bs=512 count=100
will fail after 511 writes, with an "input/output error", and will overwrite the data in the root dnode/direntry. Clearly something is very, very wrong.
Could this be a bug? It appears that offset is a inode block index rather than actual byte offset, yet here we are comparing them as if offset was a file byte offset.
blocknum get_inode_block(inode * node, unsigned int offset) {
if(offset > node->size) { // this line
return (blocknum){0, 0};
}
in office hours i heard alan say that the easiest way to add cacheing (at the end of the project) is to add a thin layer over dwrite/dread which adds stuff to a cache space we've allocated and first checks there for reads
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