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authorJoel Becker <joel.becker@oracle.com>2006-01-26 00:31:07 +0300
committerMark Fasheh <mark.fasheh@oracle.com>2006-02-04 01:01:05 +0300
commit3d0f89bb169482d26d5aa4e82e763077e7e9bc4d (patch)
tree2d2317ce1417202322e3f715534fab80394bd5d2 /fs/configfs/mount.c
parent62ca3d2603571dc2b1b4c1368e19d44b599062e2 (diff)
downloadlinux-3d0f89bb169482d26d5aa4e82e763077e7e9bc4d.tar.xz
configfs: Add permission and ownership to configfs objects.
configfs always made item and attribute ownership root.root and permissions based on a umask of 022. Add ->setattr() to allow chown(2)/chmod(2), and persist the changes for the lifetime of the items and attributes. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/configfs/mount.c')
-rw-r--r--fs/configfs/mount.c28
1 files changed, 23 insertions, 5 deletions
diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c
index 1a2f6f6a4d91..f920d30478e5 100644
--- a/fs/configfs/mount.c
+++ b/fs/configfs/mount.c
@@ -38,6 +38,7 @@
struct vfsmount * configfs_mount = NULL;
struct super_block * configfs_sb = NULL;
+kmem_cache_t *configfs_dir_cachep;
static int configfs_mnt_count = 0;
static struct super_operations configfs_ops = {
@@ -62,6 +63,7 @@ static struct configfs_dirent configfs_root = {
.s_children = LIST_HEAD_INIT(configfs_root.s_children),
.s_element = &configfs_root_group.cg_item,
.s_type = CONFIGFS_ROOT,
+ .s_iattr = NULL,
};
static int configfs_fill_super(struct super_block *sb, void *data, int silent)
@@ -73,9 +75,11 @@ static int configfs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
sb->s_magic = CONFIGFS_MAGIC;
sb->s_op = &configfs_ops;
+ sb->s_time_gran = 1;
configfs_sb = sb;
- inode = configfs_new_inode(S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO);
+ inode = configfs_new_inode(S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
+ &configfs_root);
if (inode) {
inode->i_op = &configfs_dir_inode_operations;
inode->i_fop = &configfs_dir_operations;
@@ -128,19 +132,31 @@ static decl_subsys(config, NULL, NULL);
static int __init configfs_init(void)
{
- int err;
+ int err = -ENOMEM;
+
+ configfs_dir_cachep = kmem_cache_create("configfs_dir_cache",
+ sizeof(struct configfs_dirent),
+ 0, 0, NULL, NULL);
+ if (!configfs_dir_cachep)
+ goto out;
kset_set_kset_s(&config_subsys, kernel_subsys);
err = subsystem_register(&config_subsys);
- if (err)
- return err;
+ if (err) {
+ kmem_cache_destroy(configfs_dir_cachep);
+ configfs_dir_cachep = NULL;
+ goto out;
+ }
err = register_filesystem(&configfs_fs_type);
if (err) {
printk(KERN_ERR "configfs: Unable to register filesystem!\n");
subsystem_unregister(&config_subsys);
+ kmem_cache_destroy(configfs_dir_cachep);
+ configfs_dir_cachep = NULL;
}
+out:
return err;
}
@@ -148,11 +164,13 @@ static void __exit configfs_exit(void)
{
unregister_filesystem(&configfs_fs_type);
subsystem_unregister(&config_subsys);
+ kmem_cache_destroy(configfs_dir_cachep);
+ configfs_dir_cachep = NULL;
}
MODULE_AUTHOR("Oracle");
MODULE_LICENSE("GPL");
-MODULE_VERSION("0.0.1");
+MODULE_VERSION("0.0.2");
MODULE_DESCRIPTION("Simple RAM filesystem for user driven kernel subsystem configuration.");
module_init(configfs_init);