driver core: add devname module aliases to allow module on-demand auto-loading

[safe/jmp/linux-2.6] / fs / hfs / super.c

diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index 8cf6797..0a81eb7 100644 (file)
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -19,6 +19,8 @@
 #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"
@@ -49,11 +51,23 @@ 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;
 }
 
 /*
@@ -65,9 +79,15 @@ static void hfs_write_super(struct super_block *sb)
  */
 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();
 }
 
 /*
@@ -82,6 +102,7 @@ static void hfs_put_super(struct super_block *sb)
 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;
@@ -90,6 +111,8 @@ static int hfs_statfs(struct dentry *dentry, struct kstatfs *buf)
        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;
@@ -161,6 +184,7 @@ static const struct super_operations hfs_super_operations = {
        .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,
@@ -173,7 +197,7 @@ enum {
        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" },
@@ -210,8 +234,8 @@ static int parse_options(char *options, struct hfs_sb_info *hsb)
        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); /* == '????' */
@@ -372,7 +396,7 @@ static int hfs_fill_super(struct super_block *sb, void *data, int silent)
 
        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) {
@@ -386,8 +410,13 @@ static int hfs_fill_super(struct super_block *sb, void *data, int silent)
        /* 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;
@@ -432,7 +461,7 @@ static struct file_system_type hfs_fs_type = {
        .fs_flags       = FS_REQUIRES_DEV,
 };
 
-static void hfs_init_once(struct kmem_cache *cachep, void *p)
+static void hfs_init_once(void *p)
 {
        struct hfs_inode_info *i = p;