Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

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+++ This bug was initially created as a clone of Bug #1895013 +++

Description of problem:
While running unsquashfs, file capabilities are not preserved.

Version-Release number of selected component (if applicable):
squashfs-tools-4.3-0.21.gitaae0aff4

How reproducible:
100%

Steps to Reproduce:
~~~
# mksquashfs /usr/bin/ping /tmp/test.img
# mount /tmp/test.img /mnt
# getcap /mnt/ping 
/mnt/ping = cap_net_admin,cap_net_raw+p
# unsquashfs /tmp/test.img
# getcap squashfs-root/ping
<EMPTY OUTPUT>
~~~

Additional info:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=804194

Applying blindly that patch against the RHEL srpm fixed the issue for me.
~~~
--- squashfs4.3.orig/squashfs-tools/unsquashfs.c	2020-11-05 13:08:22.000000000 +0100
+++ squashfs4.3/squashfs-tools/unsquashfs.c	2020-11-05 13:09:02.000000000 +0100
@@ -818,8 +818,6 @@
 {
 	struct utimbuf times = { time, time };
 
-	write_xattr(pathname, xattr);
-
 	if(utime(pathname, &times) == -1) {
 		ERROR("set_attributes: failed to set time on %s, because %s\n",
 			pathname, strerror(errno));
@@ -842,6 +840,8 @@
 		return FALSE;
 	}
 
+	write_xattr(pathname, xattr);
+
 	return TRUE;
 }
~~~

Issue has been fixed a little bit differently in 4.4 upstream.
The bug also concerns the RHEL 8 version, so cloning this bug.

https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=34334352

Here's a test build for you to try out. It passed the test case outlined in the description. Could you please run additional tests to make sure the patch didn't break anything else? If all looks fine, I'll go ahead and file an erratum.

Thanks for that build.
On my side, I don't have any non-regression tests for this pkg.
I requested the customer to check that package in its environment.

Sorry I just realized it was the one for el8, customer needs a fix for el7 (#1895013).

https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=35272511 - 8.4.0-candidate build

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (squashfs-tools bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:1732