The requirement is the developer who demand only the "new" software
they write is allowed to be compiled from source, they only want to
reuse binaries from an existed sstate-cache, if the developer makes
a change that triggers a rebuild, it should be an instant error.
The purpose of this is for the sstate-cache to check if the item
exists or not. If it doesn't the item needs to be in a whitelist
or we need to fail.
If read-only sstate-cache enable, and the recipe's ${PN} not in the
${SSTATECACHE_WHITELIST}, it trigered an instant error.
...
$ bitbake db
ERROR: Read-only sstate-cache is enabled, the build of
"db rpm-native gcc-runtime eglibc linux-libc-headers libgcc"
did not come from sstate-cache. Only the recipe listed in
SSTATECACHE_WHITELIST is allowed to build from source
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
...
[YOCTO #6639]
Signed-off-by: Hongxu Jia <[email protected]>
---
meta/classes/sstate_readonly.bbclass | 51 ++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
create mode 100644 meta/classes/sstate_readonly.bbclass
diff --git a/meta/classes/sstate_readonly.bbclass
b/meta/classes/sstate_readonly.bbclass
new file mode 100644
index 0000000..9eabf81
--- /dev/null
+++ b/meta/classes/sstate_readonly.bbclass
@@ -0,0 +1,51 @@
+SSTATE_CHECK_FUNCTIONS_append = " sstate_readonly_check"
+
+# 1) If ${SSTATECACHE_WHITELIST} is "", it means read-only sstate-cache
+# disabled;
+#
+# 2) If read-only sstate-cache enabled and the recipe's ${PN} not listed
+# in ${SSTATECACHE_WHITELIST}, the build from source will triger an
+# instant error;
+SSTATECACHE_WHITELIST ?= ""
+
+python sstate_readonly_check(){
+ whitelist = (d.getVar('SSTATECACHE_WHITELIST', True) or '').split()
+ if whitelist:
+ sq_fn = d.getVar('sq_fn', True) or []
+ missed = d.getVar('missed', True) or []
+ missed_pn = []
+ for task in missed:
+ fn = sq_fn[task]
+ data = bb.cache.Cache.loadDataFull(fn, '', d)
+ pn = data.getVar('PN', True)
+ if pn and pn not in missed_pn:
+ missed_pn.append(pn)
+
+ if missed_pn:
+ blacklist = [pn for pn in missed_pn if pn not in whitelist]
+ if blacklist:
+ msg = 'Read-only sstate-cache is enabled, the build of \n'
+ msg += '"' + ' '.join(blacklist) + '"\n'
+ msg += 'did not come from sstate-cache. Only the recipe listed
in\n'
+ msg += 'SSTATECACHE_WHITELIST is allowed to build from source'
+ bb.fatal(msg)
+}
+
+def _sstate_readonly_clean_check(d):
+ whitelist = (d.getVar('SSTATECACHE_WHITELIST', True) or '').split()
+ if whitelist:
+ pn = d.getVar('PN', True)
+ if pn not in whitelist:
+ msg = 'Read-only sstate-cache is enabled, the clean of \n'
+ msg += '%s is not allowed. Only the recipe listed in\n' % pn
+ msg += 'SSTATECACHE_WHITELIST is allowed to clean sstate-cache'
+ bb.fatal(msg)
+
+python do_cleansstate_prepend() {
+ _sstate_readonly_clean_check(d)
+}
+
+python do_cleanall_prepend() {
+ _sstate_readonly_clean_check(d)
+}
+
--
1.9.1
--
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