Date: Thu, 19 Oct 2023 10:34:14 GMT From: Dmitry Chagin <dchagin@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: bb8ecf259f96 - main - vfs cache: Fallback to namei to resolve symlinks with leading / in target for non-native ABI Message-ID: <202310191034.39JAYEE9095527@gitrepo.freebsd.org>
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The branch main has been updated by dchagin: URL: https://cgit.FreeBSD.org/src/commit/?id=bb8ecf259f96510b9c2146d846403393543061b7 commit bb8ecf259f96510b9c2146d846403393543061b7 Author: Dmitry Chagin <dchagin@FreeBSD.org> AuthorDate: 2023-10-19 10:33:58 +0000 Commit: Dmitry Chagin <dchagin@FreeBSD.org> CommitDate: 2023-10-19 10:33:58 +0000 vfs cache: Fallback to namei to resolve symlinks with leading / in target for non-native ABI This is a temporary solution to fix PR before release. During 15.0 it's necessary to refactor symlinks handling between vfs & namecache. PR: 273414 Reported by: Vincent Milum Jr, Dan Kotowski, glebius Tested by: Dan Kotowski, glebius Reviewed by: Differential Revision: https://reviews.freebsd.org/D41806 MFC after: 3 days --- sys/kern/vfs_cache.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c index 99e293d5a873..4b51b3558739 100644 --- a/sys/kern/vfs_cache.c +++ b/sys/kern/vfs_cache.c @@ -5426,12 +5426,14 @@ cache_fplookup_symlink(struct cache_fpl *fpl) struct nameidata *ndp; struct componentname *cnp; struct vnode *dvp, *tvp; + struct pwd *pwd; int error; ndp = fpl->ndp; cnp = fpl->cnp; dvp = fpl->dvp; tvp = fpl->tvp; + pwd = *(fpl->pwd); if (cache_fpl_islastcn(ndp)) { if ((cnp->cn_flags & FOLLOW) == 0) { @@ -5487,6 +5489,9 @@ cache_fplookup_symlink(struct cache_fpl *fpl) cache_fpl_checkpoint(fpl); return (cache_fpl_partial(fpl)); } + if (__predict_false(pwd->pwd_adir != pwd->pwd_rdir)) { + return (cache_fpl_aborted(fpl)); + } } return (0); }
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