void case_setup()
{
int ret;
g_message("--enter fun %s", __func__);
fixture.icache_ctrl = icache_new();
g_assert(fixture.icache_ctrl!=NULL);
ret = icache_init(fixture.icache_ctrl, IBLOCK_SIZE, 1024, 80, 128);
g_assert(ret == 0);
}
void fs_init() {
/* print init message: */
printk("Quafios filesystem is starting...\n");
/* initialize caches: */
icache_init();
/* mount tmpfs to the root. */
mount("", "/", "tmpfs", 0, NULL);
}
int ext2_load(struct inode *dev, struct inode **super)
{
int err = 0;
/* Read Superblock */
struct ext2_superblock *sb;
sb = kmalloc(sizeof(struct ext2_superblock), &M_EXT2_SB, 0);
if ((err = vfs_read(dev, 1024, sizeof(struct ext2_superblock), sb)) < 0)
return err;
/* Valid Ext2? */
if (sb->ext2_signature != EXT2_SIGNATURE) {
kfree(sb);
return -EINVAL;
}
/* Build descriptor structure */
struct ext2 *desc = kmalloc(sizeof(struct ext2), &M_EXT2, 0);
desc->supernode = dev;
desc->superblock = sb;
desc->bs = 1024UL << sb->block_size;
/* Read block group descriptor table */
uint32_t bgd_table = (desc->bs == 1024)? 2048 : desc->bs;
size_t bgds_count = (sb->blocks_count + sb->blocks_per_block_group - 1)/ sb->blocks_per_block_group;
size_t bgds_size = bgds_count * sizeof(struct ext2_block_group_descriptor);
desc->bgds_count = bgds_count;
desc->bgd_table = kmalloc(bgds_size, &M_EXT2_BGD, 0);
if (!desc->bgd_table)
return -ENOMEM;
if ((err = vfs_read(desc->supernode, bgd_table, bgds_size, desc->bgd_table)) < 0)
return err;
desc->icache = kmalloc(sizeof(struct icache), &M_ICACHE, 0);
if (!desc->icache)
return -ENOMEM;
icache_init(desc->icache);
if (super)
ext2_inode_build(desc, 2, super);
return 0;
}
