kernel/fs/mount.c


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#include <kernel/con.h>
#include <kernel/fs.h>
#include <string.h>

/* super blocks table */
struct super_block sblocks[NRSUPER];

void mount_root(void) {
  size_t ret;
  char buf[BLOCK_SIZE];
  struct super_block *s = (void*) buf;

  ret = block_read(buf, 1, 1);
  if(ret < 1) {
    printk("[fs] Failed to read super block\n");
    return;
  }

  if(s->s_magic != SUPER_MAGIC) {
    printk("[fs] Invalid magic number in super block!\n");
    return;
  }

  printk("[fs] Found valid super-block for /\n");
  printk("  0x%01x inodes\n", s->s_ninodes);
  printk("  0x%01x zones\n", s->s_nzones);
  printk("  0x%01x inode block bitmaps\n", s->s_imap_blocks);
  printk("  0x%01x zone block bitmaps\n", s->s_zmap_blocks);
  printk("  First data zone: 0x%01x\n", s->s_firstdatazone);
  printk("  Log zone size: 0x%01x\n", s->s_log_zone_size);
  printk("  Max file size: 0x%01x\n", s->s_max_size);

  /* copy the super block into the table */
  memcpy(sblocks, buf, ((unsigned) &s->s_imap - (unsigned) s));
}