diff options
Diffstat (limited to 'nfs/ops.c')
| -rw-r--r-- | nfs/ops.c | 41 |
1 files changed, 39 insertions, 2 deletions
@@ -722,7 +722,14 @@ netfs_attempt_link (struct iouser *cred, struct node *dir, error_t err = 0; if (!excl) - return EOPNOTSUPP; /* XXX */ + { + /* We have no RPC available that will do an atomic replacement, + so we settle for second best; just doing an unlink and ignoring + any errors. */ + mutex_lock (&dir->lock); + netfs_attempt_unlink (cred, dir, name); + mutex_unlock (&dir->lock); + } /* If we have postponed a translator setting on an unlinked node, then here's where we set it, by creating the new node instead of @@ -1193,7 +1200,37 @@ netfs_attempt_rename (struct iouser *cred, struct node *fromdir, error_t err; if (excl) - return EOPNOTSUPP; /* XXX */ + { + struct node *np; + + /* Just do a lookup/link/unlink sequence. */ + + mutex_lock (&fromdir->lock); + err = netfs_attempt_lookup (cred, fromdir, fromname, &np); + mutex_unlock (&fromdir->lock); + if (err) + return err; + + err = netfs_attempt_link (cred, todir, np, toname, 1); + netfs_nput (np); + if (err) + return err; + + mutex_lock (&fromdir->lock); + err = netfs_attempt_unlink (cred, fromdir, fromname); + mutex_unlock (&fromdir->lock); + + /* If the unlink failed, then back out the link */ + if (err) + { + mutex_lock (&todir->lock); + netfs_attempt_unlink (cred, todir, toname); + mutex_unlock (&todir->lock); + return err; + } + + return 0; + } mutex_lock (&fromdir->lock); purge_lookup_cache (fromdir, fromname, strlen (fromname)); |