git: 70385088cafa - main - UFS: disallow truncation to set file size past RLIMIT_FSIZE

From: Konstantin Belousov <kib_at_FreeBSD.org>
Date: Sat, 24 Sep 2022 16:42:34 UTC
The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=70385088cafaab3365c5243f22b8fc9c712c1fde

commit 70385088cafaab3365c5243f22b8fc9c712c1fde
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2022-09-18 11:49:57 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2022-09-24 16:41:22 +0000

    UFS: disallow truncation to set file size past RLIMIT_FSIZE
    
    This is mandated by POSIX.
    
    PR:     164793
    Reviewed by:    asomers, jah, markj
    Tested by:      pho
    Sponsored by:   The FreeBSD Foundation
    MFC after:      2 weeks
    Differential revision:  https://reviews.freebsd.org/D36625
---
 sys/ufs/ufs/ufs_vnops.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/ufs/ufs/ufs_vnops.c b/sys/ufs/ufs/ufs_vnops.c
index cf101ae50750..9ea38bc149a5 100644
--- a/sys/ufs/ufs/ufs_vnops.c
+++ b/sys/ufs/ufs/ufs_vnops.c
@@ -755,6 +755,9 @@ ufs_setattr(
 			 */
 			return (0);
 		}
+		error = vn_rlimit_trunc(vap->va_size, td);
+		if (error != 0)
+			return (error);
 		if ((error = UFS_TRUNCATE(vp, vap->va_size, IO_NORMAL |
 		    ((vap->va_vaflags & VA_SYNC) != 0 ? IO_SYNC : 0),
 		    cred)) != 0)