1 files changed, 161 insertions, 0 deletions

diff --git a/meta/lib/oe/sstatesig.py b/meta/lib/oe/sstatesig.py
new file mode 100644
index 0000000000..852fb7e64a
--- /dev/null
+++ b/meta/lib/oe/sstatesig.py
@@ -0,0 +1,161 @@
+import bb.siggen
+
+def sstate_rundepfilter(siggen, fn, recipename, task, dep, depname, dataCache):
+    # Return True if we should keep the dependency, False to drop it
+    def isNative(x):
+        return x.endswith("-native")
+    def isCross(x):
+        return x.endswith("-cross") or x.endswith("-cross-initial") or x.endswith("-cross-intermediate")
+    def isNativeSDK(x):
+        return x.startswith("nativesdk-")
+    def isKernel(fn):
+        inherits = " ".join(dataCache.inherits[fn])
+        return inherits.find("module-base.bbclass") != -1 or inherits.find("linux-kernel-base.bbclass") != -1
+
+    # Always include our own inter-task dependencies
+    if recipename == depname:
+        return True
+
+    # Quilt (patch application) changing isn't likely to affect anything
+    excludelist = ['quilt-native', 'subversion-native', 'git-native']
+    if depname in excludelist and recipename != depname:
+        return False
+
+    # Don't change native/cross/nativesdk recipe dependencies any further
+    if isNative(recipename) or isCross(recipename) or isNativeSDK(recipename):
+        return True
+
+    # Only target packages beyond here
+
+    # Drop native/cross/nativesdk dependencies from target recipes
+    if isNative(depname) or isCross(depname) or isNativeSDK(depname):
+        return False
+
+    # Exclude well defined machine specific configurations which don't change ABI
+    if depname in siggen.abisaferecipes:
+        return False
+
+    # Exclude well defined recipe->dependency
+    if "%s->%s" % (recipename, depname) in siggen.saferecipedeps:
+        return False
+
+    # Kernel modules are well namespaced. We don't want to depend on the kernel's checksum
+    # if we're just doing an RRECOMMENDS_xxx = "kernel-module-*", not least because the checksum
+    # is machine specific.
+    # Therefore if we're not a kernel or a module recipe (inheriting the kernel classes)
+    # and we reccomend a kernel-module, we exclude the dependency.
+    depfn = dep.rsplit(".", 1)[0]
+    if dataCache and isKernel(depfn) and not isKernel(fn):
+        for pkg in dataCache.runrecs[fn]:
+            if " ".join(dataCache.runrecs[fn][pkg]).find("kernel-module-") != -1:
+                return False
+
+    # Default to keep dependencies
+    return True
+
+class SignatureGeneratorOEBasic(bb.siggen.SignatureGeneratorBasic):
+    name = "OEBasic"
+    def init_rundepcheck(self, data):
+        self.abisaferecipes = (data.getVar("SIGGEN_EXCLUDERECIPES_ABISAFE", True) or "").split()
+        self.saferecipedeps = (data.getVar("SIGGEN_EXCLUDE_SAFE_RECIPE_DEPS", True) or "").split()
+        pass
+    def rundep_check(self, fn, recipename, task, dep, depname, dataCache = None):
+        return sstate_rundepfilter(self, fn, recipename, task, dep, depname, dataCache)
+
+class SignatureGeneratorOEBasicHash(bb.siggen.SignatureGeneratorBasicHash):
+    name = "OEBasicHash"
+    def init_rundepcheck(self, data):
+        self.abisaferecipes = (data.getVar("SIGGEN_EXCLUDERECIPES_ABISAFE", True) or "").split()
+        self.saferecipedeps = (data.getVar("SIGGEN_EXCLUDE_SAFE_RECIPE_DEPS", True) or "").split()
+        pass
+    def rundep_check(self, fn, recipename, task, dep, depname, dataCache = None):
+        return sstate_rundepfilter(self, fn, recipename, task, dep, depname, dataCache)
+
+# Insert these classes into siggen's namespace so it can see and select them
+bb.siggen.SignatureGeneratorOEBasic = SignatureGeneratorOEBasic
+bb.siggen.SignatureGeneratorOEBasicHash = SignatureGeneratorOEBasicHash
+
+
+def find_siginfo(pn, taskname, taskhashlist, d):
+    """ Find signature data files for comparison purposes """
+
+    import fnmatch
+    import glob
+
+    if taskhashlist:
+        hashfiles = {}
+
+    if not taskname:
+        # We have to derive pn and taskname
+        key = pn
+        splitit = key.split('.bb.')
+        taskname = splitit[1]
+        pn = os.path.basename(splitit[0]).split('_')[0]
+        if key.startswith('virtual:native:'):
+            pn = pn + '-native'
+
+    filedates = {}
+
+    # First search in stamps dir
+    localdata = d.createCopy()
+    localdata.setVar('MULTIMACH_TARGET_SYS', '*')
+    localdata.setVar('PN', pn)
+    localdata.setVar('PV', '*')
+    localdata.setVar('PR', '*')
+    localdata.setVar('EXTENDPE', '')
+    stamp = localdata.getVar('STAMP', True)
+    filespec = '%s.%s.sigdata.*' % (stamp, taskname)
+    foundall = False
+    import glob
+    for fullpath in glob.glob(filespec):
+        match = False
+        if taskhashlist:
+            for taskhash in taskhashlist:
+                if fullpath.endswith('.%s' % taskhash):
+                    hashfiles[taskhash] = fullpath
+                    if len(hashfiles) == len(taskhashlist):
+                        foundall = True
+                        break
+        else:
+            filedates[fullpath] = os.stat(fullpath).st_mtime
+
+    if len(filedates) < 2 and not foundall:
+        # That didn't work, look in sstate-cache
+        hashes = taskhashlist or ['*']
+        localdata = bb.data.createCopy(d)
+        for hashval in hashes:
+            localdata.setVar('PACKAGE_ARCH', '*')
+            localdata.setVar('TARGET_VENDOR', '*')
+            localdata.setVar('TARGET_OS', '*')
+            localdata.setVar('PN', pn)
+            localdata.setVar('PV', '*')
+            localdata.setVar('PR', '*')
+            localdata.setVar('BB_TASKHASH', hashval)
+            if pn.endswith('-native') or pn.endswith('-crosssdk') or pn.endswith('-cross'):
+                localdata.setVar('SSTATE_EXTRAPATH', "${NATIVELSBSTRING}/")
+            sstatename = d.getVarFlag(taskname, "sstate-name")
+            if not sstatename:
+                sstatename = taskname
+            filespec = '%s_%s.*.siginfo' % (localdata.getVar('SSTATE_PKG', True), sstatename)
+
+            if hashval != '*':
+                sstatedir = "%s/%s" % (d.getVar('SSTATE_DIR', True), hashval[:2])
+            else:
+                sstatedir = d.getVar('SSTATE_DIR', True)
+
+            filedates = {}
+            for root, dirs, files in os.walk(sstatedir):
+                for fn in files:
+                    fullpath = os.path.join(root, fn)
+                    if fnmatch.fnmatch(fullpath, filespec):
+                        if taskhashlist:
+                            hashfiles[hashval] = fullpath
+                        else:
+                            filedates[fullpath] = os.stat(fullpath).st_mtime
+
+    if taskhashlist:
+        return hashfiles
+    else:
+        return filedates
+
+bb.siggen.find_siginfo = find_siginfo