Added uncompress requirement

Having an old enough version of "file" and no "uncompress" program
installed can cause rpmbuild as root to crash and mangle rpmdb.

So let's add a build dependency for RPM-based systems.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes: #12071
Closes: #12168

rpm/generic/zfs-dkms.spec.in

@@ -32,6 +32,13 @@ Obsoletes:      spl-dkms
 Provides:       %{module}-kmod = %{version}
 AutoReqProv:    no
 
+%if 0%{?rhel}%{?fedora}%{?suse_version}
+# We don't directly use it, but if this isn't installed, rpmbuild as root can
+# crash+corrupt rpmdb
+# See issue #12071
+BuildRequires:  ncompress
+%endif
+
 %description
 This package contains the dkms ZFS kernel modules.
 

rpm/generic/zfs-kmod.spec.in

@@ -57,6 +57,13 @@ BuildRequires:  gcc, make
 BuildRequires:  elfutils-libelf-devel
 %endif
 
+%if 0%{?rhel}%{?fedora}%{?suse_version}
+# We don't directly use it, but if this isn't installed, rpmbuild as root can
+# crash+corrupt rpmdb
+# See issue #12071
+BuildRequires:  ncompress
+%endif
+
 # The developments headers will conflict with the dkms packages.
 Conflicts:      %{module}-dkms
 

rpm/generic/zfs.spec.in

@@ -140,9 +140,14 @@ BuildRequires:  libblkid-devel
 BuildRequires:  libudev-devel
 BuildRequires:  libattr-devel
 BuildRequires:  openssl-devel
+# We don't directly use it, but if this isn't installed, rpmbuild as root can
+# crash+corrupt rpmdb
+# See issue #12071
+BuildRequires:  ncompress
 %if 0%{?fedora} >= 28 || 0%{?rhel} >= 8 || 0%{?centos} >= 8
 BuildRequires:  libtirpc-devel
 %endif
+
 Requires:       openssl
 %if 0%{?_systemd}
 BuildRequires: systemd