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From 7db2efa95d859cebda2b095ffdffac42812bd6d9 Mon Sep 17 00:00:00 2001
From: Darren Kenny <darren.kenny@oracle.com>
Date: Tue, 22 Feb 2022 16:57:00 +0000
Subject: [PATCH] ima: Install on filesystems without xattr support without
failing
If an RPM contains IMA signed digests and rpm-plugin-ima is installed,
then any attempt to install to a filesystem that doesn't support
extended attributes will cause the RPM installation to fail.
This can be seen, for example, if installing a file /boot, which is
usually a vFAT filesystem.
The rpm-plugin for selinux fixed this some time back, and that same
logic can be applied to IMA too - where, if a failure to set an extended
attribute results in an errno that is set to EOPNOTSUPP, then this
should not cause a complete failure, but should instead just be logged
at a debug level.
Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
--- rpm-4.16.1.3/plugins/ima.c.orig 2023-05-02 18:19:25.095992859 +0200
+++ rpm-4.16.1.3/plugins/ima.c 2023-05-02 18:21:46.032941008 +0200
@@ -69,10 +69,13 @@
fsig = rpmfiFSignature(fi, &len);
if (fsig && (check_zero_hdr(fsig, len) == 0)) {
if (lsetxattr(path, XATTR_NAME_IMA, fsig, len, 0) < 0) {
- rpmlog(RPMLOG_ERR,
+ int is_err = errno != EOPNOTSUPP;
+ rpmlog(is_err?RPMLOG_ERR:RPMLOG_DEBUG,
"ima: could not apply signature on '%s': %s\n",
path, strerror(errno));
- rc = RPMRC_FAIL;
+ if (is_err) {
+ rc = RPMRC_FAIL;
+ }
}
}