diff options
Diffstat (limited to 'fs/afs/inode.c')
| -rw-r--r-- | fs/afs/inode.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/fs/afs/inode.c b/fs/afs/inode.c index 320ffef11574..0747339011c3 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -19,6 +19,8 @@ #include <linux/fs.h> #include <linux/pagemap.h> #include <linux/sched.h> +#include <linux/mount.h> +#include <linux/namei.h> #include "internal.h" struct afs_iget_data { @@ -102,6 +104,16 @@ static int afs_iget5_test(struct inode *inode, void *opaque) } /* + * iget5() comparator for inode created by autocell operations + * + * These pseudo inodes don't match anything. + */ +static int afs_iget5_autocell_test(struct inode *inode, void *opaque) +{ + return 0; +} + +/* * iget5() inode initialiser */ static int afs_iget5_set(struct inode *inode, void *opaque) @@ -118,6 +130,67 @@ static int afs_iget5_set(struct inode *inode, void *opaque) } /* + * inode retrieval for autocell + */ +struct inode *afs_iget_autocell(struct inode *dir, const char *dev_name, + int namesz, struct key *key) +{ + struct afs_iget_data data; + struct afs_super_info *as; + struct afs_vnode *vnode; + struct super_block *sb; + struct inode *inode; + static atomic_t afs_autocell_ino; + + _enter("{%x:%u},%*.*s,", + AFS_FS_I(dir)->fid.vid, AFS_FS_I(dir)->fid.vnode, + namesz, namesz, dev_name ?: ""); + + sb = dir->i_sb; + as = sb->s_fs_info; + data.volume = as->volume; + data.fid.vid = as->volume->vid; + data.fid.unique = 0; + data.fid.vnode = 0; + + inode = iget5_locked(sb, atomic_inc_return(&afs_autocell_ino), + afs_iget5_autocell_test, afs_iget5_set, + &data); + if (!inode) { + _leave(" = -ENOMEM"); + return ERR_PTR(-ENOMEM); + } + + _debug("GOT INODE %p { ino=%lu, vl=%x, vn=%x, u=%x }", + inode, inode->i_ino, data.fid.vid, data.fid.vnode, + data.fid.unique); + + vnode = AFS_FS_I(inode); + + /* there shouldn't be an existing inode */ + BUG_ON(!(inode->i_state & I_NEW)); + + inode->i_size = 0; + inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO; + inode->i_op = &afs_autocell_inode_operations; + inode->i_nlink = 2; + inode->i_uid = 0; + inode->i_gid = 0; + inode->i_ctime.tv_sec = get_seconds(); + inode->i_ctime.tv_nsec = 0; + inode->i_atime = inode->i_mtime = inode->i_ctime; + inode->i_blocks = 0; + inode->i_version = 0; + inode->i_generation = 0; + + set_bit(AFS_VNODE_PSEUDODIR, &vnode->flags); + inode->i_flags |= S_NOATIME; + unlock_new_inode(inode); + _leave(" = %p", inode); + return inode; +} + +/* * inode retrieval */ struct inode *afs_iget(struct super_block *sb, struct key *key, @@ -314,6 +387,19 @@ int afs_getattr(struct vfsmount *mnt, struct dentry *dentry, } /* + * discard an AFS inode + */ +int afs_drop_inode(struct inode *inode) +{ + _enter(""); + + if (test_bit(AFS_VNODE_PSEUDODIR, &AFS_FS_I(inode)->flags)) + return generic_delete_inode(inode); + else + return generic_drop_inode(inode); +} + +/* * clear an AFS inode */ void afs_evict_inode(struct inode *inode) |