diff options
| author | Thomas Bushnell <thomas@gnu.org> | 1997-08-20 20:42:23 +0000 |
|---|---|---|
| committer | Thomas Bushnell <thomas@gnu.org> | 1997-08-20 20:42:23 +0000 |
| commit | 5a36d1be4703a856456ca483c866955b969841db (patch) | |
| tree | 7aa666806d00dcad8fb7e6bb0fc6a045ccaa2ca0 /nfs | |
| parent | 73098d54c1b2622ab054073943df0e9190209aac (diff) | |
Wed Aug 20 14:31:03 1997 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* ops.c (netfs_attempt_link): Implement EXCL == 0 case.
(netfs_attempt_rename): Implement EXCL != 0 case.
Diffstat (limited to 'nfs')
| -rw-r--r-- | nfs/ChangeLog | 3 | ||||
| -rw-r--r-- | nfs/ops.c | 41 |
2 files changed, 42 insertions, 2 deletions
diff --git a/nfs/ChangeLog b/nfs/ChangeLog index afdb9495..4fcc0d83 100644 --- a/nfs/ChangeLog +++ b/nfs/ChangeLog @@ -1,5 +1,8 @@ Wed Aug 20 14:31:03 1997 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu> + * ops.c (netfs_attempt_link): Implement EXCL == 0 case. + (netfs_attempt_rename): Implement EXCL != 0 case. + * pager.c (netfs_get_filemap): If pager_create fails, return error to caller. @@ -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)); |