diff mbox series

busybox: disable PAM in the config if linux-pam is not selected

Message ID 20180326120006.24104-1-arnout@mind.be
State Accepted
Commit 0876b023663377bc3a24c80399f447c1f2afe0c1
Headers show
Series busybox: disable PAM in the config if linux-pam is not selected | expand

Commit Message

Arnout Vandecappelle March 26, 2018, noon UTC
Currently there is only logic to enable PAM when linux-pam is selected.
However, busybox will fail to build with PAM enabled if the linux-pam
package has not been built before. So we should forcibly disable PAM in
busybox in that case.

Normally this is not an issue since our default busybox config doesn't
have PAM enabled. However, if you enable linux-pam, then save the
busybox config to a custom configuration file, then disable linux-pam
again, and then do a "make clean; make", the build will fail. A more
practical situation where this can occur is when the same custom
busybox config is used in a Buildroot config with and without
linux-pam.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
---
Resend, patchwork missed the first send.
---
 package/busybox/busybox.mk | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Matt Weber March 26, 2018, 12:49 p.m. UTC | #1
Arnout,

On Mon, Mar 26, 2018 at 7:00 AM, Arnout Vandecappelle (Essensium/Mind)
<arnout@mind.be> wrote:
> Currently there is only logic to enable PAM when linux-pam is selected.
> However, busybox will fail to build with PAM enabled if the linux-pam
> package has not been built before. So we should forcibly disable PAM in
> busybox in that case.
>
> Normally this is not an issue since our default busybox config doesn't
> have PAM enabled. However, if you enable linux-pam, then save the
> busybox config to a custom configuration file, then disable linux-pam
> again, and then do a "make clean; make", the build will fail. A more
> practical situation where this can occur is when the same custom
> busybox config is used in a Buildroot config with and without
> linux-pam.

I've observed that fun behaviour when we've gone between basic builds
and configurations with STIG/SELinux requirements.

Reviewed-by: Matt Weber <matthew.weber@rockwellcollins.com>
Peter Korsgaard March 26, 2018, 12:51 p.m. UTC | #2
>>>>> "Arnout" == Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> writes:

 > Currently there is only logic to enable PAM when linux-pam is selected.
 > However, busybox will fail to build with PAM enabled if the linux-pam
 > package has not been built before. So we should forcibly disable PAM in
 > busybox in that case.

 > Normally this is not an issue since our default busybox config doesn't
 > have PAM enabled. However, if you enable linux-pam, then save the
 > busybox config to a custom configuration file, then disable linux-pam
 > again, and then do a "make clean; make", the build will fail. A more
 > practical situation where this can occur is when the same custom
 > busybox config is used in a Buildroot config with and without
 > linux-pam.

 > Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
 > ---
 > Resend, patchwork missed the first send.

Committed, thanks.
Peter Korsgaard April 7, 2018, 3:38 p.m. UTC | #3
>>>>> "Arnout" == Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> writes:

 > Currently there is only logic to enable PAM when linux-pam is selected.
 > However, busybox will fail to build with PAM enabled if the linux-pam
 > package has not been built before. So we should forcibly disable PAM in
 > busybox in that case.

 > Normally this is not an issue since our default busybox config doesn't
 > have PAM enabled. However, if you enable linux-pam, then save the
 > busybox config to a custom configuration file, then disable linux-pam
 > again, and then do a "make clean; make", the build will fail. A more
 > practical situation where this can occur is when the same custom
 > busybox config is used in a Buildroot config with and without
 > linux-pam.

 > Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
 > ---
 > Resend, patchwork missed the first send.

Committed to 2018.02.x, thanks.
diff mbox series

Patch

diff --git a/package/busybox/busybox.mk b/package/busybox/busybox.mk
index bc0c661754..7009f6a675 100644
--- a/package/busybox/busybox.mk
+++ b/package/busybox/busybox.mk
@@ -248,6 +248,10 @@  define BUSYBOX_LINUX_PAM
 	$(call KCONFIG_ENABLE_OPT,CONFIG_PAM,$(BUSYBOX_BUILD_CONFIG))
 endef
 BUSYBOX_DEPENDENCIES += linux-pam
+else
+define BUSYBOX_LINUX_PAM
+	$(call KCONFIG_DISABLE_OPT,CONFIG_PAM,$(BUSYBOX_BUILD_CONFIG))
+endef
 endif
 
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