Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implement the tmpfs_advlock operation. Makes "user-level" file locking 

work (aka lockf(3)).
This commit is contained in:
jmmv 2005-09-29 19:48:21 +00:00
parent c9b506e88e
commit b6d141c71c
3 changed files with 23 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/fs/tmpfs/tmpfs.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: tmpfs.h,v 1.7 2005/09/28 23:42:14 yamt Exp $ */
/* $NetBSD: tmpfs.h,v 1.8 2005/09/29 19:48:21 jmmv Exp $ */
/*
* Copyright (c) 2005 The NetBSD Foundation, Inc.
@ -145,6 +145,9 @@ struct tmpfs_node {
struct timespec tn_birthtime;
unsigned long tn_gen;
/* Head of byte-level lock list (used by tmpfs_advlock). */
struct lockf * tn_lockf;
/* As there is a single vnode for each active file within the
* system, care has to be taken to avoid allocating more than one
* vnode per file. In order to do this, a bidirectional association

19
sys/fs/tmpfs/tmpfs_vnops.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: tmpfs_vnops.c,v 1.14 2005/09/28 23:42:14 yamt Exp $ */
/* $NetBSD: tmpfs_vnops.c,v 1.15 2005/09/29 19:48:21 jmmv Exp $ */
/*
* Copyright (c) 2005 The NetBSD Foundation, Inc.
@ -42,7 +42,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: tmpfs_vnops.c,v 1.14 2005/09/28 23:42:14 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: tmpfs_vnops.c,v 1.15 2005/09/29 19:48:21 jmmv Exp $");
#include <sys/param.h>
#include <sys/dirent.h>
@ -55,6 +55,7 @@ __KERNEL_RCSID(0, "$NetBSD: tmpfs_vnops.c,v 1.14 2005/09/28 23:42:14 yamt Exp $"
#include <sys/uio.h>
#include <sys/unistd.h>
#include <sys/vnode.h>
#include <sys/lockf.h>
#include <uvm/uvm.h>
@ -1349,6 +1350,20 @@ tmpfs_pathconf(void *v)
/* --------------------------------------------------------------------- */
int
tmpfs_advlock(void *v)
{
struct vnode *vp = ((struct vop_advlock_args *)v)->a_vp;
struct tmpfs_node *node;
node = VP_TO_TMPFS_NODE(vp);
return lf_advlock(v, &node->tn_lockf, node->tn_size);
}
/* --------------------------------------------------------------------- */
int
tmpfs_truncate(void *v)
{

4
sys/fs/tmpfs/tmpfs_vnops.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: tmpfs_vnops.h,v 1.4 2005/09/23 15:36:15 jmmv Exp $ */
/* $NetBSD: tmpfs_vnops.h,v 1.5 2005/09/29 19:48:21 jmmv Exp $ */
/*
* Copyright (c) 2005 The NetBSD Foundation, Inc.
@ -90,7 +90,7 @@ int tmpfs_reclaim (void *);
int tmpfs_print (void *);
int tmpfs_pathconf (void *);
#define tmpfs_islocked genfs_islocked
#define tmpfs_advlock genfs_eopnotsupp
int tmpfs_advlock (void *);
#define tmpfs_blkatoff genfs_eopnotsupp
#define tmpfs_valloc genfs_eopnotsupp
#define tmpfs_reallocblks genfs_eopnotsupp