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https://github.com/drasko/codezero.git
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cab2e8bdd3
Finished adding untested shm syscalls. Finished adding untested l4 send/recv helpers Everything compiles. Now going to fix lots of bugs ;-)
95 lines
2.0 KiB
C
95 lines
2.0 KiB
C
/*
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* FS0 Initialisation.
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*
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* Copyright (C) 2007 Bahadir Balban
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*/
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#include <fs.h>
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#include <vfs.h>
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#include <bdev.h>
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#include <task.h>
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#include <kdata.h>
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#include <stdio.h>
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#include <string.h>
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#include <l4/lib/list.h>
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#include <l4/api/errno.h>
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#include <memfs/memfs.h>
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struct list_head fs_type_list;
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struct superblock *vfs_probe_filesystems(void *block)
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{
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struct file_system_type *fstype;
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struct superblock *sb;
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list_for_each_entry(fstype, &fs_type_list, list) {
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/* Does the superblock match for this fs type? */
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if ((sb = fstype->ops.get_superblock(block))) {
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/*
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* Add this to the list of superblocks this
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* fs already has.
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*/
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list_add(&sb->list, &fstype->sblist);
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return sb;
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}
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}
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return PTR_ERR(-ENODEV);
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}
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/*
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* Registers each available filesystem so that these can be
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* used when probing superblocks on block devices.
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*/
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void vfs_register_filesystems(void)
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{
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/* Initialise fstype list */
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INIT_LIST_HEAD(&fs_type_list);
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/* Call per-fs registration functions */
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memfs_register_fstype(&fs_type_list);
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}
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extern struct list_head vm_file_list;
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/*
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* Filesystem initialisation.
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*/
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int initialise(void)
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{
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void *rootdev_blocks;
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struct superblock *root_sb;
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/* Get standard init data from microkernel */
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request_initdata(&initdata);
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/* Register compiled-in filesystems with vfs core. */
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vfs_register_filesystems();
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/* Get a pointer to first block of root block device */
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rootdev_blocks = vfs_rootdev_open();
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/*
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* Since the *only* filesystem we have is a temporary memory
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* filesystem, we create it on the root device first.
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*/
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memfs_format_filesystem(rootdev_blocks);
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INIT_LIST_HEAD(&vm_file_list);
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/* Search for a filesystem on the root device */
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BUG_ON(IS_ERR(root_sb = vfs_probe_filesystems(rootdev_blocks)));
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/* Mount the filesystem on the root device */
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vfs_mount_root(root_sb);
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/* Learn about what tasks are running */
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init_task_data();
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/*
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* Initialisation is done. From here on, we can start
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* serving filesystem requests.
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*/
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return 0;
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}
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