Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 175 insertions, 0 deletions

diff --git a/buildtools/wafsamba/samba_cross.py b/buildtools/wafsamba/samba_cross.py
new file mode 100644
index 0000000..7ec1edc
--- /dev/null
+++ b/buildtools/wafsamba/samba_cross.py
@@ -0,0 +1,175 @@
+# functions for handling cross-compilation
+
+import os, sys, re, shlex
+from waflib import Utils, Logs, Options, Errors, Context
+from waflib.Configure import conf
+from wafsamba import samba_utils
+
+real_Popen = None
+
+ANSWER_UNKNOWN = (254, "")
+ANSWER_NO      = (1, "")
+ANSWER_OK      = (0, "")
+
+cross_answers_incomplete = False
+
+
+def add_answer(ca_file, msg, answer):
+    '''add an answer to a set of cross answers'''
+    try:
+        f = open(ca_file, 'a')
+    except:
+        Logs.error("Unable to open cross-answers file %s" % ca_file)
+        sys.exit(1)
+    (retcode, retstring) = answer
+    # if retstring is more than one line then we probably
+    # don't care about its actual content (the tests should
+    # yield one-line output in order to comply with the cross-answer
+    # format)
+    retstring = retstring.strip()
+    if len(retstring.split('\n')) > 1:
+        retstring = ''
+    answer = (retcode, retstring)
+
+    if answer == ANSWER_OK:
+        f.write('%s: OK\n' % msg)
+    elif answer == ANSWER_UNKNOWN:
+        f.write('%s: UNKNOWN\n' % msg)
+    elif answer == ANSWER_NO:
+        f.write('%s: NO\n' % msg)
+    else:
+        if retcode == 0:
+            f.write('%s: "%s"\n' % (msg, retstring))
+        else:
+            f.write('%s: (%d, "%s")\n' % (msg, retcode, retstring))
+    f.close()
+
+
+def cross_answer(ca_file, msg):
+    '''return a (retcode,retstring) tuple from a answers file'''
+    try:
+        f = open(ca_file, 'r')
+    except:
+        return ANSWER_UNKNOWN
+    for line in f:
+        line = line.strip()
+        if line == '' or line[0] == '#':
+            continue
+        if line.find(':') != -1:
+            a = line.split(':', 1)
+            thismsg = a[0].strip()
+            if thismsg != msg:
+                continue
+            ans = a[1].strip()
+            if ans == "OK" or ans == "YES":
+                f.close()
+                return ANSWER_OK
+            elif ans == "UNKNOWN":
+                f.close()
+                return ANSWER_UNKNOWN
+            elif ans == "FAIL" or ans == "NO":
+                f.close()
+                return ANSWER_NO
+            elif ans[0] == '"':
+                f.close()
+                return (0, ans.strip('"'))
+            elif ans[0] == "'":
+                f.close()
+                return (0, ans.strip("'"))
+            else:
+                m = re.match(r'\(\s*(-?\d+)\s*,\s*\"(.*)\"\s*\)', ans)
+                if m:
+                    f.close()
+                    return (int(m.group(1)), m.group(2))
+                else:
+                    raise Errors.WafError("Bad answer format '%s' in %s" % (line, ca_file))
+    f.close()
+    return ANSWER_UNKNOWN
+
+
+class cross_Popen(Utils.subprocess.Popen):
+    '''cross-compilation wrapper for Popen'''
+    def __init__(*k, **kw):
+        (obj, args) = k
+        use_answers = False
+        ans = ANSWER_UNKNOWN
+
+        # Three possibilities:
+        #   1. Only cross-answers - try the cross-answers file, and if
+        #      there's no corresponding answer, add to the file and mark
+        #      the configure process as unfinished.
+        #   2. Only cross-execute - get the answer from cross-execute
+        #   3. Both - try the cross-answers file, and if there is no
+        #      corresponding answer - use cross-execute to get an answer,
+        #       and add that answer to the file.
+        if '--cross-answers' in args:
+            # when --cross-answers is set, then change the arguments
+            # to use the cross answers if available
+            use_answers = True
+            i = args.index('--cross-answers')
+            ca_file = args[i+1]
+            msg     = args[i+2]
+            ans = cross_answer(ca_file, msg)
+
+        if '--cross-execute' in args and ans == ANSWER_UNKNOWN:
+            # when --cross-execute is set, then change the arguments
+            # to use the cross emulator
+            i = args.index('--cross-execute')
+            newargs = shlex.split(args[i+1])
+            newargs.extend(args[0:i])
+            if use_answers:
+                p = real_Popen(newargs,
+                               stdout=Utils.subprocess.PIPE,
+                               stderr=Utils.subprocess.PIPE,
+                               env=kw.get('env', {}))
+                ce_out, ce_err = p.communicate()
+                ans = (p.returncode, samba_utils.get_string(ce_out))
+                add_answer(ca_file, msg, ans)
+            else:
+                args = newargs
+
+        if use_answers:
+            if ans == ANSWER_UNKNOWN:
+                global cross_answers_incomplete
+                cross_answers_incomplete = True
+                add_answer(ca_file, msg, ans)
+            (retcode, retstring) = ans
+            args = ['/bin/sh', '-c', "printf %%s '%s'; exit %d" % (retstring, retcode)]
+        real_Popen.__init__(*(obj, args), **kw)
+
+
+@conf
+def SAMBA_CROSS_ARGS(conf, msg=None):
+    '''get test_args to pass when running cross compiled binaries'''
+    if not conf.env.CROSS_COMPILE:
+        return []
+
+    global real_Popen
+    if real_Popen is None:
+        real_Popen  = Utils.subprocess.Popen
+        Utils.subprocess.Popen = cross_Popen
+        Utils.run_process = Utils.run_regular_process
+        Utils.get_process = Utils.alloc_process_pool = Utils.nada
+
+    ret = []
+
+    if conf.env.CROSS_EXECUTE:
+        ret.extend(['--cross-execute', conf.env.CROSS_EXECUTE])
+
+    if conf.env.CROSS_ANSWERS:
+        if msg is None:
+            raise Errors.WafError("Cannot have NULL msg in cross-answers")
+        ret.extend(['--cross-answers', os.path.join(Context.launch_dir, conf.env.CROSS_ANSWERS), msg])
+
+    if ret == []:
+        raise Errors.WafError("Cannot cross-compile without either --cross-execute or --cross-answers")
+
+    return ret
+
+@conf
+def SAMBA_CROSS_CHECK_COMPLETE(conf):
+    '''check if we have some unanswered questions'''
+    global cross_answers_incomplete
+    if conf.env.CROSS_COMPILE and cross_answers_incomplete:
+        raise Errors.WafError("Cross answers file %s is incomplete" % conf.env.CROSS_ANSWERS)
+    return True