1 files changed, 130 insertions, 0 deletions
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
new file mode 100644
index 0000000000..d9bb6d0bff
--- /dev/null
+++ b/fs/jffs2/super.c
@@ -0,0 +1,130 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright © 2001-2007 Red Hat, Inc.
+ *
+ * Created by David Woodhouse <dwmw2@infradead.org>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <common.h>
+#include <init.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <fs.h>
+#include <linux/err.h>
+#include <linux/mount.h>
+#include <linux/jffs2.h>
+#include <linux/pagemap.h>
+#include <linux/mtd/mtd.h>
+#include <linux/ctype.h>
+#include <linux/namei.h>
+#include "compr.h"
+#include "nodelist.h"
+
+static struct kmem_cache *jffs2_inode_cachep;
+
+/* from include/linux/fs.h */
+static inline void i_uid_write(struct inode *inode, uid_t uid)
+{
+	inode->i_uid = uid;
+}
+
+static inline void i_gid_write(struct inode *inode, gid_t gid)
+{
+	inode->i_gid = gid;
+}
+
+
+static struct inode *jffs2_alloc_inode(struct super_block *sb)
+{
+	struct jffs2_inode_info *f;
+
+	f = kmem_cache_alloc(jffs2_inode_cachep, GFP_KERNEL);
+	if (!f)
+		return NULL;
+	return &f->vfs_inode;
+}
+
+static void jffs2_destroy_inode(struct inode *inode)
+{
+	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
+
+	kfree(f->target);
+	kmem_cache_free(jffs2_inode_cachep, f);
+}
+
+static void jffs2_i_init_once(void *foo)
+{
+}
+
+static const struct super_operations jffs2_super_operations =
+{
+	.alloc_inode	= jffs2_alloc_inode,
+	.destroy_inode	= jffs2_destroy_inode,
+};
+
+/*
+ * fill in the superblock
+ */
+int jffs2_fill_super(struct fs_device_d *fsdev, int silent)
+{
+	struct super_block *sb = &fsdev->sb;
+	struct jffs2_sb_info *c = sb->s_fs_info;
+
+	c->os_priv = sb;
+
+	/* Initialize JFFS2 superblock locks, the further initialization will
+	 * be done later */
+	mutex_init(&c->alloc_sem);
+	mutex_init(&c->erase_free_sem);
+	init_waitqueue_head(&c->erase_wait);
+	init_waitqueue_head(&c->inocache_wq);
+	spin_lock_init(&c->erase_completion_lock);
+	spin_lock_init(&c->inocache_lock);
+
+	sb->s_op = &jffs2_super_operations;
+	sb->s_flags = sb->s_flags | SB_NOATIME;
+	sb->s_xattr = jffs2_xattr_handlers;
+
+	return jffs2_do_fill_super(sb, silent);
+}
+
+static int __init init_jffs2_fs(void)
+{
+	/* Paranoia checks for on-medium structures. If we ask GCC
+	   to pack them with __attribute__((packed)) then it _also_
+	   assumes that they're not aligned -- so it emits crappy
+	   code on some architectures. Ideally we want an attribute
+	   which means just 'no padding', without the alignment
+	   thing. But GCC doesn't have that -- we have to just
+	   hope the structs are the right sizes, instead. */
+	BUILD_BUG_ON(sizeof(struct jffs2_unknown_node) != 12);
+	BUILD_BUG_ON(sizeof(struct jffs2_raw_dirent) != 40);
+	BUILD_BUG_ON(sizeof(struct jffs2_raw_inode) != 68);
+	BUILD_BUG_ON(sizeof(struct jffs2_raw_summary) != 32);
+
+	pr_info("JFFS version 2.2."
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
+	       " (NAND)"
+#endif
+#ifdef CONFIG_JFFS2_SUMMARY
+	       " (SUMMARY) "
+#endif
+	       " © 2001-2006 Red Hat, Inc.\n");
+
+	jffs2_inode_cachep = kmem_cache_create("jffs2_i",
+					     sizeof(struct jffs2_inode_info),
+					     0, (SLAB_RECLAIM_ACCOUNT|
+						SLAB_MEM_SPREAD|SLAB_ACCOUNT),
+					     jffs2_i_init_once);
+	if (!jffs2_inode_cachep) {
+		pr_err("error: Failed to initialise inode cache\n");
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+late_initcall(init_jffs2_fs);