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| author | Konstantin Belousov <kib@FreeBSD.org> | 2021-02-28 00:13:19 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2021-03-02 18:21:23 +0000 |
| commit | 2388ad7c293fbc89ee239a1adcb87fd158c4e8e9 (patch) | |
| tree | 4ce77c0ed0fc26a00217c998615753d266e6bab5 /sys/kern/vfs_lookup.c | |
| parent | 59e749428111c029116a4302a544c7cc18b33772 (diff) | |
| download | src-2388ad7c293fbc89ee239a1adcb87fd158c4e8e9.tar.gz src-2388ad7c293fbc89ee239a1adcb87fd158c4e8e9.zip | |
nameicap_tracker_add: avoid duplicates in the tracker list
Reviewed by: markj
Tested by: arichardson, pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D28907
Diffstat (limited to 'sys/kern/vfs_lookup.c')
| -rw-r--r-- | sys/kern/vfs_lookup.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/kern/vfs_lookup.c b/sys/kern/vfs_lookup.c index 73290e8da05f..cdd4a914239f 100644 --- a/sys/kern/vfs_lookup.c +++ b/sys/kern/vfs_lookup.c @@ -182,6 +182,9 @@ nameicap_tracker_add(struct nameidata *ndp, struct vnode *dp) if ((ndp->ni_lcf & NI_LCF_CAP_DOTDOT) == 0 || dp->v_type != VDIR) return; cnp = &ndp->ni_cnd; + nt = TAILQ_LAST(&ndp->ni_cap_tracker, nameicap_tracker_head); + if (nt != NULL && nt->dp == dp) + return; nt = malloc(sizeof(*nt), M_NAMEITRACKER, M_WAITOK); vhold(dp); nt->dp = dp; |