On Wed, Jan 30, 2019 at 05:00:09PM +0100, Pino Toscano wrote:
Use NEVR when querying RPM for the list of files of a package,
instead
of ENVR. Also, use the epoch only when non-zero, and version of RPM
supports it.
The approach is basically copied from what supermin does in its RPM
package handler.
---
v2v/linux.ml | 59 +++++++++++++++++++++++++++++++++-------------------
1 file changed, 38 insertions(+), 21 deletions(-)
diff --git a/v2v/linux.ml b/v2v/linux.ml
index 43449157b..99b0e0e7b 100644
--- a/v2v/linux.ml
+++ b/v2v/linux.ml
@@ -27,6 +27,8 @@ open Utils
module G = Guestfs
+let re_version = PCRE.compile "(\\d+)\\.(\\d+)"
+
let augeas_reload g =
g#aug_load ();
debug_augeas_errors g
@@ -80,29 +82,44 @@ let file_list_of_package (g : Guestfs.guestfs) inspect app =
| "rpm" ->
(* Since RPM allows multiple packages installed with the same
- * name, always check the full ENVR here (RHBZ#1161250).
+ * name, always check the full NEVR here (RHBZ#1161250).
+ *
+ * In RPM < 4.11 query commands that use the epoch number in the
+ * package name did not work.
+ *
+ * For example:
+ * RHEL 6 (rpm 4.8.0):
+ * $ rpm -q tar-2:1.23-11.el6.x86_64
+ * package tar-2:1.23-11.el6.x86_64 is not installed
+ * Fedora 20 (rpm 4.11.2):
+ * $ rpm -q tar-2:1.26-30.fc20.x86_64
+ * tar-1.26-30.fc20.x86_64
*)
+ let is_rpm_lt_4_11 () =
+ let ver =
+ try
+ let ver = List.find_map (
+ function
+ | { G.app2_name = name; G.app2_version = version }
+ when name = "rpm" -> Some version
+ | _ -> None
+ ) inspect.i_apps in
+ if PCRE.matches re_version ver then
+ (int_of_string (PCRE.sub 1), int_of_string (PCRE.sub 2))
+ else
+ (0, 0)
+ with Not_found ->
+ (* 'rpm' not installed? Hmm... *)
+ (0, 0) in
+ ver < (4, 11)
+ in
let pkg_name =
- sprintf "%s-%s-%s" app.G.app2_name
- app.G.app2_version app.G.app2_release in
- let pkg_name =
- if app.G.app2_epoch > 0_l then (
- (* RHEL 3/4 'rpm' does not support using the epoch prefix.
- * (RHBZ#1170685).
- *)
- let is_rhel_lt_5 =
- match inspect with
- | { i_type = "linux";
- i_distro = "rhel" | "centos" |
"scientificlinux" |
- "oraclelinux" | "redhat-based";
- i_major_version = v } when v < 5 -> true
- | _ -> false in
- if is_rhel_lt_5 then
- pkg_name
- else
- sprintf "%ld:%s" app.G.app2_epoch pkg_name
- ) else
- pkg_name in
+ if app.G.app2_epoch = Int32.zero || is_rpm_lt_4_11 () then
+ sprintf "%s-%s-%s" app.G.app2_name app.G.app2_version
+ app.G.app2_release
+ else
+ sprintf "%s-%ld:%s-%s" app.G.app2_name app.G.app2_epoch
+ app.G.app2_version app.G.app2_release in
let cmd = [| "rpm"; "-ql"; pkg_name |] in
debug "%s" (String.concat " " (Array.to_list cmd));
let files = g#command_lines cmd in
Yes this looks good now, thanks.
ACK
Rich.
--
Richard Jones, Virtualization Group, Red Hat
http://people.redhat.com/~rjones
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