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We don't export individual snapshots, so mnt_export field in snapshot's

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mount point is NULL. That's why when we try to access snapshots over NFS
use mnt_export field from the parent file system.

MFC after:	1 week
This commit is contained in:
Pawel Jakub Dawidek 2009-09-08 15:57:03 +00:00
parent d77fa17750
commit d6b8039292
1 changed files with 23 additions and 0 deletions
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23
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c
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@ -97,6 +97,8 @@ static int zfs_root(vfs_t *vfsp, int flags, vnode_t **vpp);
static int zfs_statfs(vfs_t *vfsp, struct statfs *statp);
static int zfs_vget(vfs_t *vfsp, ino_t ino, int flags, vnode_t **vpp);
static int zfs_sync(vfs_t *vfsp, int waitfor);
static int zfs_checkexp(vfs_t *vfsp, struct sockaddr *nam, int *extflagsp,
struct ucred **credanonp, int *numsecflavors, int **secflavors);
static int zfs_fhtovp(vfs_t *vfsp, fid_t *fidp, vnode_t **vpp);
static void zfs_objset_close(zfsvfs_t *zfsvfs);
static void zfs_freevfs(vfs_t *vfsp);
@ -108,6 +110,7 @@ static struct vfsops zfs_vfsops = {
.vfs_statfs = zfs_statfs,
.vfs_vget = zfs_vget,
.vfs_sync = zfs_sync,
.vfs_checkexp = zfs_checkexp,
.vfs_fhtovp = zfs_fhtovp,
};
@ -1115,6 +1118,26 @@ zfs_vget(vfs_t *vfsp, ino_t ino, int flags, vnode_t **vpp)
return (err);
}
static int
zfs_checkexp(vfs_t *vfsp, struct sockaddr *nam, int *extflagsp,
struct ucred **credanonp, int *numsecflavors, int **secflavors)
{
zfsvfs_t *zfsvfs = vfsp->vfs_data;
/*
* If this is regular file system vfsp is the same as
* zfsvfs->z_parent->z_vfs, but if it is snapshot,
* zfsvfs->z_parent->z_vfs represents parent file system
* which we have to use here, because only this file system
* has mnt_export configured.
*/
vfsp = zfsvfs->z_parent->z_vfs;
return (vfs_stdcheckexp(zfsvfs->z_parent->z_vfs, nam, extflagsp,
credanonp, numsecflavors, secflavors));
}
static int
zfs_fhtovp(vfs_t *vfsp, fid_t *fidp, vnode_t **vpp)
{