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| author | Konstantin Belousov <kib@FreeBSD.org> | 2023-11-18 08:55:48 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2023-12-05 00:44:13 +0000 |
| commit | 62ed7f98a2db5018a5336398df37f60cb157ec6d (patch) | |
| tree | 9f9ad6463c03913e34ea3dc9453ba283dac960f1 | |
| parent | ca50304272a673f4bacce824261dfa4999182c1c (diff) | |
| download | src-62ed7f98a2db5018a5336398df37f60cb157ec6d.tar.gz src-62ed7f98a2db5018a5336398df37f60cb157ec6d.zip | |
VFS: add VOP_GETLOWVNODE()
(cherry picked from commit 4cbe4c48a7e574ec1bb919351d7a57d252b00b62)
| -rw-r--r-- | sys/fs/nullfs/null_vnops.c | 18 | ||||
| -rw-r--r-- | sys/kern/vfs_default.c | 10 | ||||
| -rw-r--r-- | sys/kern/vnode_if.src | 7 |
3 files changed, 35 insertions, 0 deletions
diff --git a/sys/fs/nullfs/null_vnops.c b/sys/fs/nullfs/null_vnops.c index 9898bf010a21..7db7a352f176 100644 --- a/sys/fs/nullfs/null_vnops.c +++ b/sys/fs/nullfs/null_vnops.c @@ -1131,6 +1131,23 @@ null_vput_pair(struct vop_vput_pair_args *ap) return (res); } +static int +null_getlowvnode(struct vop_getlowvnode_args *ap) +{ + struct vnode *vp, *vpl; + + vp = ap->a_vp; + if (vn_lock(vp, LK_SHARED) != 0) + return (EBADF); + + vpl = NULLVPTOLOWERVP(vp); + vhold(vpl); + VOP_UNLOCK(vp); + VOP_GETLOWVNODE(vpl, ap->a_vplp, ap->a_flags); + vdrop(vpl); + return (0); +} + /* * Global vfs data structures */ @@ -1143,6 +1160,7 @@ struct vop_vector null_vnodeops = { .vop_bmap = VOP_EOPNOTSUPP, .vop_stat = null_stat, .vop_getattr = null_getattr, + .vop_getlowvnode = null_getlowvnode, .vop_getwritemount = null_getwritemount, .vop_inactive = null_inactive, .vop_need_inactive = null_need_inactive, diff --git a/sys/kern/vfs_default.c b/sys/kern/vfs_default.c index 966f0c7ab497..c378d05e449f 100644 --- a/sys/kern/vfs_default.c +++ b/sys/kern/vfs_default.c @@ -85,6 +85,7 @@ static int vop_stdgetpages_async(struct vop_getpages_async_args *ap); static int vop_stdread_pgcache(struct vop_read_pgcache_args *ap); static int vop_stdstat(struct vop_stat_args *ap); static int vop_stdvput_pair(struct vop_vput_pair_args *ap); +static int vop_stdgetlowvnode(struct vop_getlowvnode_args *ap); /* * This vnode table stores what we want to do if the filesystem doesn't @@ -114,6 +115,7 @@ struct vop_vector default_vnodeops = { .vop_fsync = VOP_NULL, .vop_stat = vop_stdstat, .vop_fdatasync = vop_stdfdatasync, + .vop_getlowvnode = vop_stdgetlowvnode, .vop_getpages = vop_stdgetpages, .vop_getpages_async = vop_stdgetpages_async, .vop_getwritemount = vop_stdgetwritemount, @@ -1463,3 +1465,11 @@ vop_stdvput_pair(struct vop_vput_pair_args *ap) vput(vp); return (0); } + +static int +vop_stdgetlowvnode(struct vop_getlowvnode_args *ap) +{ + vref(ap->a_vp); + *ap->a_vplp = ap->a_vp; + return (0); +} diff --git a/sys/kern/vnode_if.src b/sys/kern/vnode_if.src index 8f9a8503f22a..dd4a3a738089 100644 --- a/sys/kern/vnode_if.src +++ b/sys/kern/vnode_if.src @@ -472,6 +472,13 @@ vop_getwritemount { OUT struct mount **mpp; }; +%% getwritevnode vp = = = + +vop_getlowvnode { + IN struct vnode *vp; + OUT struct vnode **vplp; + IN int flags; +}; %% print vp - - - |