diff options
Diffstat (limited to 'libdiskfs')
| -rw-r--r-- | libdiskfs/Makefile | 4 | ||||
| -rw-r--r-- | libdiskfs/node-lastref.c | 49 | ||||
| -rw-r--r-- | libdiskfs/node-nput.c | 24 | ||||
| -rw-r--r-- | libdiskfs/node-nrele.c | 22 | ||||
| -rw-r--r-- | libdiskfs/priv.h | 4 |
5 files changed, 57 insertions, 46 deletions
diff --git a/libdiskfs/Makefile b/libdiskfs/Makefile index 803761d1..93c96fa6 100644 --- a/libdiskfs/Makefile +++ b/libdiskfs/Makefile @@ -40,8 +40,8 @@ IFSOCKSRCS=ifsock.c OTHERSRCS = conch-fetch.c conch-set.c dir-clear.c dir-init.c dir-renamed.c \ extern-inline.c \ node-create.c node-drop.c node-make.c node-rdwr.c node-update.c \ - node-nref.c node-nput.c node-nrele.c node-nrefl.c node-nputl.c \ - node-nrelel.c node-cache.c \ + node-nref.c node-nput.c node-nrele.c node-lastref.c node-nrefl.c \ + node-nputl.c node-nrelel.c node-cache.c \ peropen-make.c peropen-rele.c protid-make.c protid-rele.c \ init-init.c init-startup.c init-first.c init-main.c \ rdwr-internal.c boot-start.c demuxer.c node-times.c shutdown.c \ diff --git a/libdiskfs/node-lastref.c b/libdiskfs/node-lastref.c new file mode 100644 index 00000000..068566a2 --- /dev/null +++ b/libdiskfs/node-lastref.c @@ -0,0 +1,49 @@ +/* + Copyright (C) 1999 Free Software Foundation, Inc. + Written by Thomas Bushnell, 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" + +/* Called when the last hard reference is released. If there are no + links, then request soft references to be dropped. */ +void +_diskfs_lastref (struct node *np) +{ + /* This is our cue that something akin to "last process closes file" + in the POSIX.1 sense happened, so make sure any pending node time + updates now happen in a timely fashion. */ + diskfs_set_node_times (np); + diskfs_lost_hardrefs (np); + if (!np->dn_stat.st_nlink) + { + if (np->sockaddr != MACH_PORT_NULL) + { + mach_port_deallocate (mach_task_self (), np->sockaddr); + np->sockaddr = MACH_PORT_NULL; + } + + /* There are no links. If there are soft references that + can be dropped, we can't let them postpone deallocation. + So attempt to drop them. But that's a user-supplied + routine, which might result in further recursive calls to + the ref-counting system. This is not a problem, as we + hold a weak reference ourselves. */ + diskfs_try_dropping_softrefs (np); + } +} diff --git a/libdiskfs/node-nput.c b/libdiskfs/node-nput.c index d59769b6..73f6b2c2 100644 --- a/libdiskfs/node-nput.c +++ b/libdiskfs/node-nput.c @@ -34,29 +34,7 @@ diskfs_nput (struct node *np) refcounts_demote (&np->refcounts, &result); if (result.hard == 0) - { - /* This is our cue that something akin to "last process closes file" - in the POSIX.1 sense happened, so make sure any pending node time - updates now happen in a timely fashion. */ - diskfs_set_node_times (np); - diskfs_lost_hardrefs (np); - if (!np->dn_stat.st_nlink) - { - if (np->sockaddr != MACH_PORT_NULL) - { - mach_port_deallocate (mach_task_self (), np->sockaddr); - np->sockaddr = MACH_PORT_NULL; - } - - /* There are no links. If there are soft references that - can be dropped, we can't let them postpone deallocation. - So attempt to drop them. But that's a user-supplied - routine, which might result in further recursive calls to - the ref-counting system. This is not a problem, as we - hold a weak reference ourselves. */ - diskfs_try_dropping_softrefs (np); - } - } + _diskfs_lastref (np); /* Finally get rid of our reference. */ refcounts_deref_weak (&np->refcounts, &result); diff --git a/libdiskfs/node-nrele.c b/libdiskfs/node-nrele.c index 73688356..6b7b7072 100644 --- a/libdiskfs/node-nrele.c +++ b/libdiskfs/node-nrele.c @@ -40,27 +40,7 @@ diskfs_nrele (struct node *np) { locked = TRUE; pthread_mutex_lock (&np->lock); - /* This is our cue that something akin to "last process closes file" - in the POSIX.1 sense happened, so make sure any pending node time - updates now happen in a timely fashion. */ - diskfs_set_node_times (np); - diskfs_lost_hardrefs (np); - if (!np->dn_stat.st_nlink) - { - if (np->sockaddr != MACH_PORT_NULL) - { - mach_port_deallocate (mach_task_self (), np->sockaddr); - np->sockaddr = MACH_PORT_NULL; - } - - /* There are no links. If there are soft references that - can be dropped, we can't let them postpone deallocation. - So attempt to drop them. But that's a user-supplied - routine, which might result in further recursive calls to - the ref-counting system. This is not a problem, as we - hold a weak reference ourselves. */ - diskfs_try_dropping_softrefs (np); - } + _diskfs_lastref (np); } /* Finally get rid of our reference. */ diff --git a/libdiskfs/priv.h b/libdiskfs/priv.h index 2ac3c9ef..276d0931 100644 --- a/libdiskfs/priv.h +++ b/libdiskfs/priv.h @@ -96,6 +96,10 @@ void _diskfs_boot_privports (void); /* Clean routine for control port. */ void _diskfs_control_clean (void *); +/* Called when the last hard reference is released. If there are no + links, then request soft references to be dropped. */ +void _diskfs_lastref (struct node *np); + /* Number of outstanding PT_CTL ports. */ extern int _diskfs_ncontrol_ports; |