From 45222b9e02fb282eb0a8007a3d992dd229ec2410 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 10 May 2007 22:22:20 -0700 Subject: AFS: implement statfs Implement the statfs() op for AFS. Signed-off-by: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/afs/super.c | 41 ++++++++++++++++++++++++++++++++++++----- 1 file changed, 36 insertions(+), 5 deletions(-) (limited to 'fs/afs/super.c') diff --git a/fs/afs/super.c b/fs/afs/super.c index 422f532b9b62..579af632c8e8 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -21,22 +21,20 @@ #include #include #include +#include #include "internal.h" #define AFS_FS_MAGIC 0x6B414653 /* 'kAFS' */ static void afs_i_init_once(void *foo, struct kmem_cache *cachep, unsigned long flags); - static int afs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data, struct vfsmount *mnt); - static struct inode *afs_alloc_inode(struct super_block *sb); - static void afs_put_super(struct super_block *sb); - static void afs_destroy_inode(struct inode *inode); +static int afs_statfs(struct dentry *dentry, struct kstatfs *buf); struct file_system_type afs_fs_type = { .owner = THIS_MODULE, @@ -47,7 +45,7 @@ struct file_system_type afs_fs_type = { }; static const struct super_operations afs_super_ops = { - .statfs = simple_statfs, + .statfs = afs_statfs, .alloc_inode = afs_alloc_inode, .drop_inode = generic_delete_inode, .write_inode = afs_write_inode, @@ -508,3 +506,36 @@ static void afs_destroy_inode(struct inode *inode) kmem_cache_free(afs_inode_cachep, vnode); atomic_dec(&afs_count_active_inodes); } + +/* + * return information about an AFS volume + */ +static int afs_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + struct afs_volume_status vs; + struct afs_vnode *vnode = AFS_FS_I(dentry->d_inode); + struct key *key; + int ret; + + key = afs_request_key(vnode->volume->cell); + if (IS_ERR(key)) + return PTR_ERR(key); + + ret = afs_vnode_get_volume_status(vnode, key, &vs); + key_put(key); + if (ret < 0) { + _leave(" = %d", ret); + return ret; + } + + buf->f_type = dentry->d_sb->s_magic; + buf->f_bsize = AFS_BLOCK_SIZE; + buf->f_namelen = AFSNAMEMAX - 1; + + if (vs.max_quota == 0) + buf->f_blocks = vs.part_max_blocks; + else + buf->f_blocks = vs.max_quota; + buf->f_bavail = buf->f_bfree = buf->f_blocks - vs.blocks_in_use; + return 0; +} -- cgit v1.2.3-55-g7522