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No need to register a cluster for an empty file

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This commit is contained in:
Baptiste Wicht 2013-12-27 21:03:47 +01:00
parent 98c78f1d2d
commit 11dfdafbed
1 changed files with 1 additions and 18 deletions
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19
kernel/src/fat32.cpp
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@ -801,12 +801,6 @@ bool fat32::touch(dd disk, const disks::partition_descriptor& partition, const s
return false;
}
//Find a free cluster to hold the directory entries
auto cluster = find_free_cluster(disk);
if(cluster == 0){
return false;
}
std::unique_heap_array<cluster_entry> directory_cluster(16 * fat_bs->sectors_per_cluster);
if(!read_sectors(disk, cluster_lba(cluster_number.second), fat_bs->sectors_per_cluster, directory_cluster.get())){
return false;
@ -815,23 +809,12 @@ bool fat32::touch(dd disk, const disks::partition_descriptor& partition, const s
auto entries = number_of_entries(file);
auto new_directory_entry = find_free_entry(directory_cluster, entries);
init_file_entry<true>(new_directory_entry, file.c_str(), cluster);
init_file_entry<true>(new_directory_entry, file.c_str(), 0);
//Write back the parent directory cluster
if(!write_sectors(disk, cluster_lba(cluster_number.second), fat_bs->sectors_per_cluster, directory_cluster.get())){
return false;
}
//This cluster is the end of the chain
if(!write_fat_value(disk, cluster, 0x0FFFFFF8)){
return false;
}
//One cluster is now used for the directory entries
fat_is->free_clusters -= 1;
if(!write_is(disk, partition)){
return false;
}
return true;
}