iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge tag 'pull-nfsd-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Browse Source 
Pull nfsd fix from Al Viro:
 "Catch from lock_rename() audit; nfsd_rename() checked that both
  directories belonged to the same filesystem, but only after having
  done lock_rename().

  Trivial fix, tested and acked by nfs folks"

* tag 'pull-nfsd-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  nfsd: lock_rename() needs both directories to live on the same fs
This commit is contained in:
Linus Torvalds
2023-10-23 20:40:04 -10:00
parent 84186fcb83 1aee9158bc
commit d88520ad73
1 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
fs/nfsd/vfs.c
View File

@ -1788,6 +1788,12 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
if (!flen || isdotent(fname, flen) || !tlen || isdotent(tname, tlen))
goto out;
err = (rqstp->rq_vers == 2) ? nfserr_acces : nfserr_xdev;
if (ffhp->fh_export->ex_path.mnt != tfhp->fh_export->ex_path.mnt)
goto out;
if (ffhp->fh_export->ex_path.dentry != tfhp->fh_export->ex_path.dentry)
goto out;
retry:
host_err = fh_want_write(ffhp);
if (host_err) {
@ -1823,12 +1829,6 @@ retry:
if (ndentry == trap)
goto out_dput_new;
host_err = -EXDEV;
if (ffhp->fh_export->ex_path.mnt != tfhp->fh_export->ex_path.mnt)
goto out_dput_new;
if (ffhp->fh_export->ex_path.dentry != tfhp->fh_export->ex_path.dentry)
goto out_dput_new;
if ((ndentry->d_sb->s_export_op->flags & EXPORT_OP_CLOSE_BEFORE_UNLINK) &&
nfsd_has_cached_files(ndentry)) {
close_cached = true;