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.
Showing the changes to include/linux (1 of 7 files). Show all
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| @@ -81,6 +81,7 @@ extern void done_path_create(struct path *, struct dentry *); · 80 unmodified lines | ||
| 81 | 81 | extern struct dentry *kern_path_locked(const char *, struct path *); |
| 82 | 82 | extern int kern_path_mountpoint(int, const char *, struct path *, unsigned int); |
| 83 | 83 | |
| 84 | +extern struct dentry *try_lookup_one_len(const char *, struct dentry *, int); | |
| 84 | 85 | extern struct dentry *lookup_one_len(const char *, struct dentry *, int); |
| 85 | 86 | extern struct dentry *lookup_one_len_unlocked(const char *, struct dentry *, int); |
| 86 | 87 | |