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| author | David Howells <dhowells@redhat.com> | 2018-06-15 15:19:22 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2018-06-15 15:27:09 +0100 |
| commit | 0da0b7fd73e4f20e1a987dfade0b36bb4813cf10 (patch) | |
| tree | e0b6e920d546fc0dbf0d813418ad3e4b0d61eabe /fs/afs/internal.h | |
| parent | c88d5a7fff2ef9aeed8aebb06f59d565693d0634 (diff) | |
| download | linux-0da0b7fd73e4f20e1a987dfade0b36bb4813cf10.tar.bz2 | |
afs: Display manually added cells in dynamic root mount
Alter the dynroot mount so that cells created by manipulation of
/proc/fs/afs/cells and /proc/fs/afs/rootcell and by specification of a root
cell as a module parameter will cause directories for those cells to be
created in the dynamic root superblock for the network namespace[*].
To this end:
(1) Only one dynamic root superblock is now created per network namespace
and this is shared between all attempts to mount it. This makes it
easier to find the superblock to modify.
(2) When a dynamic root superblock is created, the list of cells is walked
and directories created for each cell already defined.
(3) When a new cell is added, if a dynamic root superblock exists, a
directory is created for it.
(4) When a cell is destroyed, the directory is removed.
(5) These directories are created by calling lookup_one_len() on the root
dir which automatically creates them if they don't exist.
[*] Inasmuch as network namespaces are currently supported here.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs/internal.h')
| -rw-r--r-- | fs/afs/internal.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 209e04ffa6c3..5d8260b4c2b3 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -240,7 +240,7 @@ struct afs_net { atomic_t cells_outstanding; seqlock_t cells_lock; - spinlock_t proc_cells_lock; + struct mutex proc_cells_lock; struct list_head proc_cells; /* Known servers. Theoretically each fileserver can only be in one @@ -264,6 +264,7 @@ struct afs_net { struct mutex lock_manager_mutex; /* Misc */ + struct super_block *dynroot_sb; /* Dynamic root mount superblock */ struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ struct afs_sysnames *sysnames; rwlock_t sysnames_lock; @@ -722,6 +723,10 @@ extern const struct inode_operations afs_dynroot_inode_operations; extern const struct dentry_operations afs_dynroot_dentry_operations; extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *); +extern int afs_dynroot_mkdir(struct afs_net *, struct afs_cell *); +extern void afs_dynroot_rmdir(struct afs_net *, struct afs_cell *); +extern int afs_dynroot_populate(struct super_block *); +extern void afs_dynroot_depopulate(struct super_block *); /* * file.c |