* This file may be distributed under the terms of the GNU General Public License.
*
* This file contains hfs_read_super(), some of the super_ops and
- * init_module() and cleanup_module(). The remaining super_ops are in
+ * init_hfs_fs() and exit_hfs_fs(). The remaining super_ops are in
* inode.c since they deal with inodes.
*
* Based on the minix file system code, (C) 1991, 1992 by Linus Torvalds
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/mount.h>
#include <linux/nls.h>
#include <linux/parser.h>
#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/vfs.h>
#include "hfs_fs.h"
#include "btree.h"
-static kmem_cache_t *hfs_inode_cachep;
+static struct kmem_cache *hfs_inode_cachep;
MODULE_LICENSE("GPL");
*/
static void hfs_write_super(struct super_block *sb)
{
+ lock_super(sb);
sb->s_dirt = 0;
- if (sb->s_flags & MS_RDONLY)
- return;
+
/* sync everything to the buffers */
+ if (!(sb->s_flags & MS_RDONLY))
+ hfs_mdb_commit(sb);
+ unlock_super(sb);
+}
+
+static int hfs_sync_fs(struct super_block *sb, int wait)
+{
+ lock_super(sb);
hfs_mdb_commit(sb);
+ sb->s_dirt = 0;
+ unlock_super(sb);
+
+ return 0;
}
/*
*/
static void hfs_put_super(struct super_block *sb)
{
+ lock_kernel();
+
+ if (sb->s_dirt)
+ hfs_write_super(sb);
hfs_mdb_close(sb);
/* release the MDB's resources */
hfs_mdb_put(sb);
+
+ unlock_kernel();
}
/*
*
* changed f_files/f_ffree to reflect the fs_ablock/free_ablocks.
*/
-static int hfs_statfs(struct super_block *sb, struct kstatfs *buf)
+static int hfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
+ struct super_block *sb = dentry->d_sb;
+ u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
+
buf->f_type = HFS_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = (u32)HFS_SB(sb)->fs_ablocks * HFS_SB(sb)->fs_div;
buf->f_bavail = buf->f_bfree;
buf->f_files = HFS_SB(sb)->fs_ablocks;
buf->f_ffree = HFS_SB(sb)->free_ablocks;
+ buf->f_fsid.val[0] = (u32)id;
+ buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = HFS_NAMELEN;
return 0;
{
struct hfs_inode_info *i;
- i = kmem_cache_alloc(hfs_inode_cachep, SLAB_KERNEL);
+ i = kmem_cache_alloc(hfs_inode_cachep, GFP_KERNEL);
return i ? &i->vfs_inode : NULL;
}
kmem_cache_free(hfs_inode_cachep, HFS_I(inode));
}
-static struct super_operations hfs_super_operations = {
+static const struct super_operations hfs_super_operations = {
.alloc_inode = hfs_alloc_inode,
.destroy_inode = hfs_destroy_inode,
.write_inode = hfs_write_inode,
.clear_inode = hfs_clear_inode,
.put_super = hfs_put_super,
.write_super = hfs_write_super,
+ .sync_fs = hfs_sync_fs,
.statfs = hfs_statfs,
.remount_fs = hfs_remount,
.show_options = hfs_show_options,
opt_err
};
-static match_table_t tokens = {
+static const match_table_t tokens = {
{ opt_uid, "uid=%u" },
{ opt_gid, "gid=%u" },
{ opt_umask, "umask=%o" },
int tmp, token;
/* initialize the sb with defaults */
- hsb->s_uid = current->uid;
- hsb->s_gid = current->gid;
+ hsb->s_uid = current_uid();
+ hsb->s_gid = current_gid();
hsb->s_file_umask = 0133;
hsb->s_dir_umask = 0022;
hsb->s_type = hsb->s_creator = cpu_to_be32(0x3f3f3f3f); /* == '????' */
return 0;
}
p = match_strdup(&args[0]);
- hsb->nls_disk = load_nls(p);
+ if (p)
+ hsb->nls_disk = load_nls(p);
if (!hsb->nls_disk) {
printk(KERN_ERR "hfs: unable to load codepage \"%s\"\n", p);
kfree(p);
return 0;
}
p = match_strdup(&args[0]);
- hsb->nls_io = load_nls(p);
+ if (p)
+ hsb->nls_io = load_nls(p);
if (!hsb->nls_io) {
printk(KERN_ERR "hfs: unable to load iocharset \"%s\"\n", p);
kfree(p);
struct inode *root_inode;
int res;
- sbi = kmalloc(sizeof(struct hfs_sb_info), GFP_KERNEL);
+ sbi = kzalloc(sizeof(struct hfs_sb_info), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
sb->s_fs_info = sbi;
- memset(sbi, 0, sizeof(struct hfs_sb_info));
INIT_HLIST_HEAD(&sbi->rsrc_inodes);
res = -EINVAL;
sb->s_op = &hfs_super_operations;
sb->s_flags |= MS_NODIRATIME;
- init_MUTEX(&sbi->bitmap_lock);
+ mutex_init(&sbi->bitmap_lock);
res = hfs_mdb_get(sb);
if (res) {
/* try to get the root inode */
hfs_find_init(HFS_SB(sb)->cat_tree, &fd);
res = hfs_cat_find_brec(sb, HFS_ROOT_CNID, &fd);
- if (!res)
+ if (!res) {
+ if (fd.entrylength > sizeof(rec) || fd.entrylength < 0) {
+ res = -EIO;
+ goto bail;
+ }
hfs_bnode_read(fd.bnode, &rec, fd.entryoffset, fd.entrylength);
+ }
if (res) {
hfs_find_exit(&fd);
goto bail_no_root;
}
+ res = -EINVAL;
root_inode = hfs_iget(sb, &fd.search_key->cat, &rec);
hfs_find_exit(&fd);
if (!root_inode)
goto bail_no_root;
+ res = -ENOMEM;
sb->s_root = d_alloc_root(root_inode);
if (!sb->s_root)
goto bail_iput;
return res;
}
-static struct super_block *hfs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
+static int hfs_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data,
+ struct vfsmount *mnt)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, hfs_fill_super);
+ return get_sb_bdev(fs_type, flags, dev_name, data, hfs_fill_super, mnt);
}
static struct file_system_type hfs_fs_type = {
.fs_flags = FS_REQUIRES_DEV,
};
-static void hfs_init_once(void *p, kmem_cache_t *cachep, unsigned long flags)
+static void hfs_init_once(void *p)
{
struct hfs_inode_info *i = p;
- if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == SLAB_CTOR_CONSTRUCTOR)
- inode_init_once(&i->vfs_inode);
+ inode_init_once(&i->vfs_inode);
}
static int __init init_hfs_fs(void)
hfs_inode_cachep = kmem_cache_create("hfs_inode_cache",
sizeof(struct hfs_inode_info), 0, SLAB_HWCACHE_ALIGN,
- hfs_init_once, NULL);
+ hfs_init_once);
if (!hfs_inode_cachep)
return -ENOMEM;
err = register_filesystem(&hfs_fs_type);
static void __exit exit_hfs_fs(void)
{
unregister_filesystem(&hfs_fs_type);
- if (kmem_cache_destroy(hfs_inode_cachep))
- printk(KERN_ERR "hfs_inode_cache: not all structures were freed\n");
+ kmem_cache_destroy(hfs_inode_cachep);
}
module_init(init_hfs_fs)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff