[PATCH v2 4/4] guestfs: bringup: add debug mode

[Daniel Gomez <da.gomez@kernel.org>]

From: Daniel Gomez <da.gomez@samsung.com>

To be able to run bringup_guestfs.sh script in bash debug mode:
1. disabled
2. set -x
3. set -euxo pipefile

From set manual:
-x  Print commands and their arguments as they are executed.
-e  Exit immediately if a command exits with a non-zero status.
-u  Treat unset variables as an error when substituting.
-o option-name
          Set the variable corresponding to option-name:
              pipefail     the return value of a pipeline is the status of
                           the last command to exit with a non-zero status,
                           or zero if no command exited with a non-zero status

Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
---
 kconfigs/Kconfig.guestfs   | 21 +++++++++++++++++++++
 scripts/bringup_guestfs.sh | 10 ++++++++++
 2 files changed, 31 insertions(+)

diff --git a/kconfigs/Kconfig.guestfs b/kconfigs/Kconfig.guestfs
index a2fddd691be9dbfa025c916708d8c14a07eb4514..ed08d293b3f6085350d09b68457aed6f8c09a468 100644
--- a/kconfigs/Kconfig.guestfs
+++ b/kconfigs/Kconfig.guestfs
@@ -214,4 +214,25 @@ config VIRT_BUILDER_OS_VERSION
          to get a list of operating systems and versions supported
          by guestfs.
 
+choice
+	prompt "Guestfs bringup debug mode"
+	default GUESTFS_BRINGUP_DEBUG_DISABLED
+
+config GUESTFS_BRINGUP_DEBUG_DISABLED
+	bool "Disabled"
+	help
+	  Disables bringup debug.
+
+config GUESTFS_BRINGUP_DEBUG_0
+	bool "set -x"
+	help
+	  Enables 'set -x' when running scripts/guestfs_bringup.sh.
+
+config GUESTFS_BRINGUP_DEBUG_1
+	bool "set -euxo pipefile"
+	help
+	  Enables 'set -euxo pipefile' when running scripts/guestfs_bringup.sh.
+
+endchoice
+
 endif # GUESTFS
diff --git a/scripts/bringup_guestfs.sh b/scripts/bringup_guestfs.sh
index 3fd48331b73f51e23818c553f8973d17d38dffca..67f85a5fdb0a41a12de01f6e9911c206d7ab9a5a 100755
--- a/scripts/bringup_guestfs.sh
+++ b/scripts/bringup_guestfs.sh
@@ -5,6 +5,16 @@
 source ${TOPDIR}/.config
 source ${TOPDIR}/scripts/lib.sh
 
+if [[ "${CONFIG_GUESTFS_BRINGUP_DEBUG_0+x}" && \
+	   "${CONFIG_GUESTFS_BRINGUP_DEBUG_0}" == "y" ]]; then
+	set -x
+fi
+
+if [[ "${CONFIG_GUESTFS_BRINGUP_DEBUG_1+x}" && \
+	  "${CONFIG_GUESTFS_BRINGUP_DEBUG_1}" == "y" ]]; then
+	set -euxo pipefail
+fi
+
 export LIBVIRT_DEFAULT_URI=$CONFIG_LIBVIRT_URI
 
 # We use the NVMe setting for virtio too (go figure), but IDE

-- 
2.49.0