git: a38033234692 - main - tarfs: Limit file name length

The branch main has been updated by des:

URL: https://cgit.FreeBSD.org/src/commit/?id=a38033234692e9dab6f3f4404adc693fccabc14a

commit a38033234692e9dab6f3f4404adc693fccabc14a
Author:     Dag-Erling Smørgrav <des@FreeBSD.org>
AuthorDate: 2026-11-02 12:29:17 +0000
Commit:     Dag-Erling Smørgrav <des@FreeBSD.org>
CommitDate: 2026-11-02 12:29:17 +0000

    tarfs: Limit file name length
    
    When indexing the tarball on mount, fail if a file or directory name
    exceeds MAXNAMLEN.
    
    Reported by:    n0ps1ed
    Reported by:    Franz Bettag <franz@bett.ag>
    MFC after:      1 week
    Reviewed by:    markj, emaste
    Differential Revision:  https://reviews.freebsd.org/D60903
---
 sys/fs/tarfs/tarfs_subr.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/fs/tarfs/tarfs_subr.c b/sys/fs/tarfs/tarfs_subr.c
index 431aa352cd38..180e0a53f8b9 100644
--- a/sys/fs/tarfs/tarfs_subr.c
+++ b/sys/fs/tarfs/tarfs_subr.c
@@ -173,6 +173,8 @@ tarfs_alloc_node(struct tarfs_mount *tmp, const char *name, size_t namelen,
 
 	if (parent != NULL && parent->type != VDIR)
 		return (ENOTDIR);
+	if (namelen > NAME_MAX)
+		return (ENAMETOOLONG);
 	tnp = malloc(sizeof(struct tarfs_node), M_TARFSNODE, M_WAITOK | M_ZERO);
 	mtx_init(&tnp->lock, "tarfs node lock", NULL, MTX_DEF);
 	tnp->gen = arc4random();