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-rw-r--r--libdiskfs/dirremove.c45
-rw-r--r--libdiskfs/lookup.c78
2 files changed, 123 insertions, 0 deletions
diff --git a/libdiskfs/dirremove.c b/libdiskfs/dirremove.c
new file mode 100644
index 00000000..4032f0a7
--- /dev/null
+++ b/libdiskfs/dirremove.c
@@ -0,0 +1,45 @@
+/* Wrapper for diskfs_dirremove_hard
+ Copyright (C) 1996 Free Software Foundation, Inc.
+ Written by Michael I. Bushnell, p/BSG.
+
+ This file is part of the GNU Hurd.
+
+ The GNU Hurd is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ The GNU Hurd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */
+
+#include "priv.h"
+
+/* This will only be called after a successful call to diskfs_lookup
+ of type REMOVE; this call should remove the name found from the
+ directory DS. DP has been locked continuously since the call to
+ diskfs_lookup and DS is as that call set it. This routine should
+ call diskfs_notice_dirchange if DP->dirmod_reqs is nonzero. This
+ function is a wrapper for diskfs_dirremove_hard. The entry being
+ removed has name NAME and refers to NP. */
+error_t
+diskfs_dirremove (struct node *dp,
+ struct node *np,
+ char *name,
+ struct dirstat *ds)
+{
+ error_t err;
+
+ diskfs_purge_cache (dp, np);
+
+ err = diskfs_dirremove_hard (dp, ds);
+ if (!err && dp->dirmod_reqs)
+ diskfs_notice_dirchange (dp, DIR_CHANGED_UNLINK, name);
+ return err;
+}
+
diff --git a/libdiskfs/lookup.c b/libdiskfs/lookup.c
new file mode 100644
index 00000000..59100cef
--- /dev/null
+++ b/libdiskfs/lookup.c
@@ -0,0 +1,78 @@
+/* Wrapper for diskfs_lookup_hard
+ Copyright (C) 1996 Free Software Foundation, Inc.
+ Written by Michael I. Bushnell, p/BSG.
+
+ This file is part of the GNU Hurd.
+
+ The GNU Hurd is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ The GNU Hurd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */
+
+#include "priv.h"
+
+/* Lookup in directory DP (which is locked) the name NAME. TYPE will
+ either be LOOKUP, CREATE, RENAME, or REMOVE. CRED identifies the
+ user making the call.
+
+ If the name is found, return zero, and (if NP is nonzero) set *NP
+ to point to the node for it, locked. If the name is not found,
+ return ENOENT, and (if NP is nonzero) set *NP to zero. If NP is
+ zero, then the node found must not be locked, even transitorily.
+ Lookups for REMOVE and RENAME (which must often check permissions
+ on the node being found) will always set NP.
+
+ If DS is nonzero then:
+ For LOOKUP: set *DS to be ignored by diskfs_drop_dirstat.
+ For CREATE: on success, set *DS to be ignored by diskfs_drop_dirstat.
+ on failure, set *DS for a future call to diskfs_direnter.
+ For RENAME: on success, set *DS for a future call to diskfs_dirrewrite.
+ on failure, set *DS for a future call to diskfs_direnter.
+ For REMOVE: on success, set *DS for a future call to diskfs_dirremove.
+ on failure, set *DS to be ignored by diskfs_drop_dirstat.
+ The caller of this function guarantees that if DS is nonzero, then
+ either the appropriate call listed above or diskfs_drop_dirstat will
+ be called with DS before the directory DP is unlocked, and guarantees
+ that no lookup calls will be made on this directory between this
+ lookup and the use (or descruction) of *DS.
+
+ If you use the library's versions of diskfs_rename_dir,
+ diskfs_clear_directory, and diskfs_init_dir, then lookups for `..'
+ might have the flag SPEC_DOTDOT or'd in. This has the following special
+ meaning:
+ For LOOKUP: DP should be unlocked and its reference dropped before
+ returning.
+ For RENAME and REMOVE: The node being found (*NP) is already held
+ locked, so don't lock it or add a reference to it.
+ (SPEC_DOTDOT will not be given with CREATE.)
+
+ Return ENOTDIR if DP is not a directory.
+ Return EACCES if CRED isn't allowed to search DP.
+ Return EACCES if completing the operation will require writing
+ the directory and diskfs_checkdirmod won't allow the modification.
+ Return ENOENT if NAME isn't in the directory.
+ Return EAGAIN if NAME refers to the `..' of this filesystem's root.
+ Return EIO if appropriate.
+
+ This function is a wrapper for diskfs_lookup_hard.
+*/
+error_t
+diskfs_lookup (struct node *dp,
+ char *name,
+ enum lookup_type type,
+ struct node **np,
+ struct dirstat *ds,
+ struct protid *cred)
+{
+ return diskfs_lookup_hard (dp, name, type, np, ds, cred);
+}
+