NFS: Correct the NFS mount path when following a referral
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Родитель
0b75b35c7c
Коммит
b88f8a546f
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@ -2559,6 +2559,27 @@ static struct vfsmount *nfs_do_root_mount(struct file_system_type *fs_type,
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return root_mnt;
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}
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static void nfs_fix_devname(const struct path *path, struct vfsmount *mnt)
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{
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char *page = (char *) __get_free_page(GFP_KERNEL);
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char *devname, *tmp;
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if (page == NULL)
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return;
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devname = nfs_path(path->mnt->mnt_devname,
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path->mnt->mnt_root, path->dentry,
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page, PAGE_SIZE);
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if (devname == NULL)
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goto out_freepage;
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tmp = kstrdup(devname, GFP_KERNEL);
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if (tmp == NULL)
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goto out_freepage;
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kfree(mnt->mnt_devname);
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mnt->mnt_devname = tmp;
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out_freepage:
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free_page((unsigned long)page);
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}
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static int nfs_follow_remote_path(struct vfsmount *root_mnt,
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const char *export_path, struct vfsmount *mnt_target)
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{
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@ -2585,6 +2606,9 @@ static int nfs_follow_remote_path(struct vfsmount *root_mnt,
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mnt_target->mnt_sb = s;
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mnt_target->mnt_root = dget(nd.path.dentry);
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/* Correct the device pathname */
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nfs_fix_devname(&nd.path, mnt_target);
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path_put(&nd.path);
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down_write(&s->s_umount);
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return 0;
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