/mandos/trunk

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/trunk

« back to all changes in this revision

Viewing changes to Makefile

  • Committer: Teddy Hogeborn
  • Date: 2015-05-23 20:18:34 UTC
  • mto: This revision was merged to the branch mainline in revision 756.
  • Revision ID: teddy@recompile.se-20150523201834-e89ex4ito93yni8x
mandos: Use multiprocessing module to run checkers.

For a long time, the Mandos server has occasionally logged the message
"ERROR: Child process vanished".  This was never a fatal error, but it
has been annoying and slightly worrying, since a definite cause was
not found.  One potential cause could be the "multiprocessing" and
"subprocess" modules conflicting w.r.t. SIGCHLD.  To avoid this,
change the running of checkers from using subprocess.Popen
asynchronously to instead first create a multiprocessing.Process()
(which is asynchronous) calling a function, and have that function
then call subprocess.call() (which is synchronous).  In this way, the
only thing using any asynchronous subprocesses is the multiprocessing
module.

This makes it necessary to change one small thing in the D-Bus API,
since the subprocesses.call() function does not expose the raw wait(2)
status value.

DBUS-API (CheckerCompleted): Change the second value provided by this
                             D-Bus signal from the raw wait(2) status
                             to the actual terminating signal number.
mandos (subprocess_call_pipe): New function to be called by
                               multiprocessing.Process (starting a
                               separate process).
(Client.last_checker signal): New attribute for signal which
                              terminated last checker.  Like
                              last_checker_status, only not accessible
                              via D-Bus.
(Client.checker_callback): Take new "connection" argument and use it
                           to get returncode; set last_checker_signal.
                           Return False so gobject does not call this
                           callback again.
(Client.start_checker): Start checker using a multiprocessing.Process
                        instead of a subprocess.Popen.
(ClientDBus.checker_callback): Take new "connection" argument.        Call
                               Client.checker_callback early to have
                               it set last_checker_status and
                               last_checker_signal; use those.  Change
                               second value provided to D-Bus signal
                               CheckerCompleted to use
                               last_checker_signal if checker was
                               terminated by signal.
mandos-monitor: Update to reflect DBus API change.
(MandosClientWidget.checker_completed): Take "signal" instead of
                                        "condition" argument.  Use it
                                        accordingly.  Remove dead code
                                        (os.WCOREDUMP case).

Show diffs side-by-side

added added

removed removed

Lines of Context:
10
10
        -Wmissing-format-attribute -Wnormalized=nfc -Wpacked \
11
11
        -Wredundant-decls -Wnested-externs -Winline -Wvla \
12
12
        -Wvolatile-register-var -Woverlength-strings
13
 
#DEBUG=-ggdb3 -fsanitize=address 
 
13
#DEBUG=-ggdb3
14
14
# For info about _FORTIFY_SOURCE, see feature_test_macros(7)
15
 
# and <https://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html>.
 
15
# and <http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html>.
16
16
FORTIFY=-D_FORTIFY_SOURCE=2 -fstack-protector-all -fPIC
17
 
# <https://developerblog.redhat.com/2014/10/16/gcc-undefined-behavior-sanitizer-ubsan/>
18
 
ALL_SANITIZE_OPTIONS:=-fsanitize=leak -fsanitize=undefined \
19
 
        -fsanitize=shift -fsanitize=integer-divide-by-zero \
20
 
        -fsanitize=unreachable -fsanitize=vla-bound -fsanitize=null \
21
 
        -fsanitize=return -fsanitize=signed-integer-overflow \
22
 
        -fsanitize=bounds -fsanitize=alignment \
23
 
        -fsanitize=object-size -fsanitize=float-divide-by-zero \
24
 
        -fsanitize=float-cast-overflow -fsanitize=nonnull-attribute \
25
 
        -fsanitize=returns-nonnull-attribute -fsanitize=bool \
26
 
        -fsanitize=enum
27
 
# Check which sanitizing options can be used
28
 
SANITIZE:=$(foreach option,$(ALL_SANITIZE_OPTIONS),$(shell \
29
 
        echo 'int main(){}' | $(CC) --language=c $(option) /dev/stdin \
30
 
        -o /dev/null >/dev/null 2>&1 && echo $(option)))
31
17
LINK_FORTIFY_LD=-z relro -z now
32
18
LINK_FORTIFY=
33
19
 
38
24
endif
39
25
#COVERAGE=--coverage
40
26
OPTIMIZE=-Os -fno-strict-aliasing
41
 
LANGUAGE=-std=gnu11
 
27
LANGUAGE=-std=gnu99
42
28
htmldir=man
43
 
version=1.7.15
 
29
version=1.6.9
44
30
SED=sed
45
31
 
46
32
USER=$(firstword $(subst :, ,$(shell getent passwd _mandos || getent passwd nobody || echo 65534)))
47
 
GROUP=$(firstword $(subst :, ,$(shell getent group _mandos || getent group nogroup || echo 65534)))
 
33
GROUP=$(firstword $(subst :, ,$(shell getent group _mandos || getent group nobody || echo 65534)))
48
34
 
49
35
## Use these settings for a traditional /usr/local install
50
36
# PREFIX=$(DESTDIR)/usr/local
75
61
##
76
62
 
77
63
SYSTEMD=$(DESTDIR)$(shell pkg-config systemd --variable=systemdsystemunitdir)
78
 
TMPFILES=$(DESTDIR)$(shell pkg-config systemd --variable=tmpfilesdir)
79
64
 
80
65
GNUTLS_CFLAGS=$(shell pkg-config --cflags-only-I gnutls)
81
66
GNUTLS_LIBS=$(shell pkg-config --libs gnutls)
84
69
GPGME_CFLAGS=$(shell gpgme-config --cflags; getconf LFS_CFLAGS)
85
70
GPGME_LIBS=$(shell gpgme-config --libs; getconf LFS_LIBS; \
86
71
        getconf LFS_LDFLAGS)
87
 
LIBNL3_CFLAGS=$(shell pkg-config --cflags-only-I libnl-route-3.0)
88
 
LIBNL3_LIBS=$(shell pkg-config --libs libnl-route-3.0)
89
72
 
90
73
# Do not change these two
91
 
CFLAGS+=$(WARN) $(DEBUG) $(FORTIFY) $(SANITIZE) $(COVERAGE) \
92
 
        $(OPTIMIZE) $(LANGUAGE) $(GNUTLS_CFLAGS) $(AVAHI_CFLAGS) \
93
 
        $(GPGME_CFLAGS) -DVERSION='"$(version)"'
 
74
CFLAGS+=$(WARN) $(DEBUG) $(FORTIFY) $(COVERAGE) $(OPTIMIZE) \
 
75
        $(LANGUAGE) $(GNUTLS_CFLAGS) $(AVAHI_CFLAGS) $(GPGME_CFLAGS) \
 
76
        -DVERSION='"$(version)"'
94
77
LDFLAGS+=-Xlinker --as-needed $(COVERAGE) $(LINK_FORTIFY) $(foreach flag,$(LINK_FORTIFY_LD),-Xlinker $(flag))
95
78
 
96
79
# Commands to format a DocBook <refentry> document into a manual page
123
106
PLUGINS=plugins.d/password-prompt plugins.d/mandos-client \
124
107
        plugins.d/usplash plugins.d/splashy plugins.d/askpass-fifo \
125
108
        plugins.d/plymouth
126
 
PLUGIN_HELPERS=plugin-helpers/mandos-client-iprouteadddel
127
 
CPROGS=plugin-runner $(PLUGINS) $(PLUGIN_HELPERS)
 
109
CPROGS=plugin-runner $(PLUGINS)
128
110
PROGS=mandos mandos-keygen mandos-ctl mandos-monitor $(CPROGS)
129
111
DOCS=mandos.8 mandos-keygen.8 mandos-monitor.8 mandos-ctl.8 \
130
112
        mandos.conf.5 mandos-clients.conf.5 plugin-runner.8mandos \
257
239
        $(LINK.c) $^ -lrt $(GNUTLS_LIBS) $(AVAHI_LIBS) $(strip\
258
240
                ) $(GPGME_LIBS) $(LOADLIBES) $(LDLIBS) -o $@
259
241
 
260
 
plugin-helpers/mandos-client-iprouteadddel: plugin-helpers/mandos-client-iprouteadddel.c
261
 
        $(LINK.c) $(LIBNL3_CFLAGS) $^ $(LIBNL3_LIBS) $(strip\
262
 
                ) $(LOADLIBES) $(LDLIBS) -o $@
263
 
 
264
242
.PHONY : all doc html clean distclean mostlyclean maintainer-clean \
265
243
        check run-client run-server install install-html \
266
244
        install-server install-client-nokey install-client uninstall \
283
261
run-client: all keydir/seckey.txt keydir/pubkey.txt
284
262
        @echo "###################################################################"
285
263
        @echo "# The following error messages are harmless and can be safely     #"
286
 
        @echo "# ignored:                                                        #"
 
264
        @echo "# ignored.  The messages are caused by not running as root, but   #"
 
265
        @echo "# you should NOT run \"make run-client\" as root unless you also    #"
 
266
        @echo "# unpacked and compiled Mandos as root, which is NOT recommended. #"
287
267
        @echo "# From plugin-runner: setgid: Operation not permitted             #"
288
268
        @echo "#                     setuid: Operation not permitted             #"
289
269
        @echo "# From askpass-fifo:  mkfifo: Permission denied                   #"
290
270
        @echo "# From mandos-client:                                             #"
291
271
        @echo "#             Failed to raise privileges: Operation not permitted #"
292
272
        @echo "#             Warning: network hook \"*\" exited with status *      #"
293
 
        @echo "#                                                                 #"
294
 
        @echo "# (The messages are caused by not running as root, but you should #"
295
 
        @echo "# NOT run \"make run-client\" as root unless you also unpacked and  #"
296
 
        @echo "# compiled Mandos as root, which is also NOT recommended.)        #"
297
273
        @echo "###################################################################"
298
274
# We set GNOME_KEYRING_CONTROL to block pam_gnome_keyring
299
275
        ./plugin-runner --plugin-dir=plugins.d \
300
 
                --plugin-helper-dir=plugin-helpers \
301
276
                --config-file=plugin-runner.conf \
302
277
                --options-for=mandos-client:--seckey=keydir/seckey.txt,--pubkey=keydir/pubkey.txt,--network-hook-dir=network-hooks.d \
303
278
                --env-for=mandos-client:GNOME_KEYRING_CONTROL= \
340
315
        elif install --directory --mode=u=rwx $(STATEDIR); then \
341
316
                chown -- $(USER):$(GROUP) $(STATEDIR) || :; \
342
317
        fi
343
 
        if [ "$(TMPFILES)" != "$(DESTDIR)" -a -d "$(TMPFILES)" ]; then \
344
 
                install --mode=u=rw,go=r tmpfiles.d-mandos.conf \
345
 
                        $(TMPFILES)/mandos.conf; \
346
 
        fi
347
318
        install --mode=u=rwx,go=rx mandos $(PREFIX)/sbin/mandos
348
319
        install --mode=u=rwx,go=rx --target-directory=$(PREFIX)/sbin \
349
320
                mandos-ctl
381
352
install-client-nokey: all doc
382
353
        install --directory $(LIBDIR)/mandos $(CONFDIR)
383
354
        install --directory --mode=u=rwx $(KEYDIR) \
384
 
                $(LIBDIR)/mandos/plugins.d \
385
 
                $(LIBDIR)/mandos/plugin-helpers
 
355
                $(LIBDIR)/mandos/plugins.d
386
356
        if [ "$(CONFDIR)" != "$(LIBDIR)/mandos" ]; then \
387
357
                install --mode=u=rwx \
388
 
                        --directory "$(CONFDIR)/plugins.d" \
389
 
                        "$(CONFDIR)/plugin-helpers"; \
 
358
                        --directory "$(CONFDIR)/plugins.d"; \
390
359
        fi
391
360
        install --mode=u=rwx,go=rx --directory \
392
361
                "$(CONFDIR)/network-hooks.d"
412
381
        install --mode=u=rwxs,go=rx \
413
382
                --target-directory=$(LIBDIR)/mandos/plugins.d \
414
383
                plugins.d/plymouth
415
 
        install --mode=u=rwx,go=rx \
416
 
                --target-directory=$(LIBDIR)/mandos/plugin-helpers \
417
 
                plugin-helpers/mandos-client-iprouteadddel
418
384
        install initramfs-tools-hook \
419
385
                $(INITRAMFSTOOLS)/hooks/mandos
420
386
        install --mode=u=rw,go=r initramfs-tools-hook-conf \