[PATCH v3 1/4] Do not ignore errors from tar

[Demi Marie Obenour <demiobenour@gmail.com>]

These would be ignored due to a missing -o pipefail in the shell script.
As a result, listing nonexistent s6-rc-compile inputs would cause a
broken image to be successfully built.

Reported-by: Alyssa Ross <hi@alyssa.is>
Link: https://spectrum-os.org/lists/archives/spectrum-devel/87segu879h.fsf@alyssa.is
Signed-off-by: Demi Marie Obenour <demiobenour@gmail.com>
---
 host/rootfs/Makefile | 4 ++--
 img/app/Makefile     | 4 ++--
 vm/sys/net/Makefile  | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/host/rootfs/Makefile b/host/rootfs/Makefile
index e96458dba06ae31129b115b2b649962f8d88187a..2288ae4d22ca817ba9fe8ebfc42326fe38b27c27 100644
--- a/host/rootfs/Makefile
+++ b/host/rootfs/Makefile
@@ -169,8 +169,8 @@ build/etc/s6-rc: $(S6_RC_FILES)
 	mkdir -p $$(dirname $@)
 	rm -rf $@
 
-	dir=$$(mktemp -d) && \
-	    tar -c $(S6_RC_FILES) | tar -C $$dir -x --strip-components 2 && \
+	set -uo pipefail; dir=$$(mktemp -d) || exit; \
+	    { tar -c $(S6_RC_FILES) | tar -C $$dir -x --strip-components 2; } && \
 	    s6-rc-compile $@ $$dir; \
 	    exit=$$?; rm -r $$dir; exit $$exit
 
diff --git a/img/app/Makefile b/img/app/Makefile
index 9665a6b7158f2d8b183831202a4559ae06d53d16..73db07cc4c781d9c41cdf41a6214298aae8de58a 100644
--- a/img/app/Makefile
+++ b/img/app/Makefile
@@ -117,8 +117,8 @@ build/etc/s6-rc: $(VM_S6_RC_FILES)
 	mkdir -p $$(dirname $@)
 	rm -rf $@
 
-	dir=$$(mktemp -d) && \
-	    tar -c $(VM_S6_RC_FILES) | tar -C $$dir -x --strip-components 2 && \
+	set -uo pipefail; dir=$$(mktemp -d) || exit; \
+	    { tar -c $(VM_S6_RC_FILES) | tar -C $$dir -x --strip-components 2; } && \
 	    s6-rc-compile $@ $$dir; \
 	    exit=$$?; rm -r $$dir; exit $$exit
 
diff --git a/vm/sys/net/Makefile b/vm/sys/net/Makefile
index 755b145175199aa97049dbd7feadc0e76230cf30..88ae20de79cd21b06263837f90310e8800b3d4e2 100644
--- a/vm/sys/net/Makefile
+++ b/vm/sys/net/Makefile
@@ -82,8 +82,8 @@ build/etc/s6-rc: $(VM_S6_RC_FILES)
 	mkdir -p $$(dirname $@)
 	rm -rf $@
 
-	dir=$$(mktemp -d) && \
-	    tar -c $(VM_S6_RC_FILES) | tar -C $$dir -x --strip-components 2 && \
+	set -uo pipefail; dir=$$(mktemp -d) || exit; \
+	    { tar -c $(VM_S6_RC_FILES) | tar -C $$dir -x --strip-components 2; } && \
 	    s6-rc-compile $@ $$dir; \
 	    exit=$$?; rm -r $$dir; exit $$exit
 

-- 
2.51.0