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| author | Svante Signell <svante.signell@gmail.com> | 2019-10-29 23:59:23 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2019-10-30 00:04:35 +0100 |
| commit | 14639382938714f07f76abd3d221c6d472710502 (patch) | |
| tree | 53d96fbfdd7b80bac58f73244267c68a0058fbca /libtrivfs/trivfs.h | |
| parent | dd7447b87c6d6d1afaf25553b0f911853dcc6683 (diff) | |
| download | hurd-14639382938714f07f76abd3d221c6d472710502.tar.gz hurd-14639382938714f07f76abd3d221c6d472710502.tar.bz2 hurd-14639382938714f07f76abd3d221c6d472710502.zip | |
libnetfs: Support for file record locking
2019-03-04 Svante Signell <svante.signell@gmail.com>
* file-lock.c: Make flock work regardless of the
mode in which the file was opened.
2019-02-12 Svante Signell <svante.signell@gmail.com>
* file-lock.c: Comment out "Make flock work without R or W mode"
2019-02-01 Svante Signell <svante.signell@gmail.com>
* Update copyright years.
* file-record-lock.c(netfs_S_file_record_lock):
Don't set rendezvous to MACH_PORT_NULL.
2017-01-05 Svante Signell <svante.signell@gmail.com>
* Update copyright years and headers.
* dir-lookup.c (netfs_S_dir_lookup): Call fshelp_rlock_tweak()
with new last argument rendezvous = MACH_PORT_NULL.
* file-lock.c (netfs_S_file_lock): Likewise.
* file-record-lock.c (netfs_S_file_record_lock): Likewise.
(netfs_S_file_record_lock): Add new argument mach_port_t rendezvous.
2016-05-23 Svante Signell <svante.signell@gmail.com>
* netfs.h (struct peropen): Change the type of rlock_status from
an int to a struct rlock_peropen.
(struct node): Change the type of userbox from a struct lock_box
to a struct rlock_box.
* dir-lookup.c (netfs_S_dir_lookup): Use fshelp_rlock_tweak.
* file-lock-stat.c (netfs_S_file_lock_stat): Total rewrite
around the new record locking functions.
* file-lock.c (netfs_S_file_lock): Likewise.
* file-record-lock.c (netfs_S_file_record_lock): Likewise.
* make-node.c (netfs_make_node): Initialize userbox with
fshelp_rlock_init.
* make-peropen.c (netfs_make_peropen): Initialize lock_status
using fshelp_rlock_po_init.
(netfs_make_peropen): Add a comment that po->refcnt starts at zero.
* relese-peropen.c (netfs_release_peropen): Release lock_status
using fshelp_rlock_drop_peropen.
2001-04-11 Neal H Walfield <neal@cs.uml.edu>
* file-record-lock.c: New file. Implement
netfs_S_file_record_lock.
* Makefile (SRCS): Add file-record-lock.c
Diffstat (limited to 'libtrivfs/trivfs.h')
| -rw-r--r-- | libtrivfs/trivfs.h | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/libtrivfs/trivfs.h b/libtrivfs/trivfs.h index 1f0c5071..cdb1de8c 100644 --- a/libtrivfs/trivfs.h +++ b/libtrivfs/trivfs.h @@ -1,5 +1,5 @@ /* - Copyright (C) 1994,95,96,97,99,2002,13 Free Software Foundation, Inc. + Copyright (C) 1994-1999, 2002, 2013-2019 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as @@ -12,8 +12,8 @@ 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + along with the GNU Hurd. If not, see <http://www.gnu.org/licenses/>. +*/ #ifndef __TRIVFS_H__ #define __TRIVFS_H__ @@ -24,6 +24,7 @@ #include <mach/mach.h> #include <hurd/ports.h> #include <hurd/iohelp.h> +#include <hurd/fshelp.h> #include <refcount.h> struct trivfs_protid @@ -45,6 +46,21 @@ struct trivfs_peropen int openmodes; refcount_t refcnt; struct trivfs_control *cntl; + + struct rlock_peropen lock_status; + struct trivfs_node *tp; +}; + +/* A unique one of these exists for each node currently in use. */ +struct trivfs_node +{ + pthread_mutex_t lock; + + /* The number of references to this node. */ + int references; + + struct transbox transbox; + struct rlock_box credlock; }; struct trivfs_control @@ -170,9 +186,13 @@ trivfs_create_control (mach_port_t underlying, void trivfs_clean_protid (void *); void trivfs_clean_cntl (void *); -/* This demultiplees messages for trivfs ports. */ +/* This demultiplexes messages for trivfs ports. */ int trivfs_demuxer (mach_msg_header_t *, mach_msg_header_t *); +/* FIXME: Add descriptions */ +struct trivfs_node *trivfs_make_node (struct trivfs_peropen *po); +struct trivfs_peropen *trivfs_make_peropen (struct trivfs_protid *cred); + /* Return a new protid pointing to a new peropen in CRED, with REALNODE as the underlying node reference, with the given identity, and open flags in FLAGS. CNTL is the trivfs control object. */ |