[bug#75049] [PATCH] services: rootless-podman: Fix PATH lookup for Shepherd services.

[Giacomo Leidi]

One-shot Shepherd services required to correctly setup Podman in the
Guix System, are failing to find executables upon boot.  This patch
changes the executable references to absolute paths to avoid PATH
lookup.

* gnu/services/containers.scm (cgroups-fs-owner-entrypoint): Hardcode
bash path;
(rootless-podman-cgroups-fs-owner-service): Ditto;
(rootless-podman-fs-entrypoint): Hardcode mount path.

Change-Id: Id6a27cadf51326ce57af93f57809b77e28dbeaef
---
 gnu/services/containers.scm | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/gnu/services/containers.scm b/gnu/services/containers.scm
index 03f0649c0d..d8f533f44c 100644
--- a/gnu/services/containers.scm
+++ b/gnu/services/containers.scm
@@ -17,6 +17,7 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (gnu services containers)
+  #:use-module (gnu packages bash)
   #:use-module (gnu packages containers)
   #:use-module (gnu packages file-systems)
   #:use-module (gnu services)
@@ -134,7 +135,7 @@ (define (cgroups-fs-owner-entrypoint config)
     (rootless-podman-configuration-group-name config))
   (program-file "cgroups2-fs-owner-entrypoint"
                 #~(system*
-                   "bash" "-c"
+                   (string-append #+bash-minimal "/bin/bash") "-c"
                    (string-append "echo Setting /sys/fs/cgroup "
                                   "group ownership to " #$group " && chown -v "
                                   "root:" #$group " /sys/fs/cgroup && "
@@ -166,7 +167,7 @@ (define (rootless-podman-cgroups-fs-owner-service config)
 (define cgroups-limits-entrypoint
   (program-file "cgroups2-limits-entrypoint"
                 #~(system*
-                   "bash" "-c"
+                   (string-append #+bash-minimal "/bin/bash") "-c"
                    (string-append "echo Setting cgroups v2 limits && "
                                   "echo +cpu +cpuset +memory +pids"
                                   " >> 
/sys/fs/cgroup/cgroup.subtree_control"))))
@@ -194,7 +195,7 @@ (define (rootless-podman-cgroups-limits-service config)
 (define rootless-podman-shared-root-fs-entrypoint
   (program-file "rootless-podman-shared-root-fs-entrypoint"
                 #~(system*
-                   "mount" "--make-shared" "/")))
+                   "/run/privileged/bin/mount" "--make-shared" "/")))
 
 (define (rootless-podman-shared-root-fs-service config)
   (shepherd-service (provision '(rootless-podman-shared-root-fs))

base-commit: 1a55fa23d881a1816ebd05ebdacc55746a8c8ab9
-- 
2.46.0