Let's make sure our poll() calls don't get interrupted where they shouldn't (SIGALRM, ...), but allow them to be
interrupted where they should (SIGINT, ...).
Fixes #1965
/test-sched-prio
/test-set
/test-sigbus
+/test-signal-util
/test-siphash24
/test-sleep
/test-socket-util
test-arphrd-list \
test-dns-domain \
test-install-root \
- test-rlimit-util
+ test-rlimit-util \
+ test-signal-util
if HAVE_ACL
tests += \
test_ask_password_api_LDADD = \
libshared.la
+test_signal_util_SOURCES = \
+ src/test/test-signal-util.c
+
+test_signal_util_LDADD = \
+ libshared.la
+
BUILT_SOURCES += \
src/test/test-hashmap-ordered.c
#include <pwd.h>
#include <resolv.h>
+#define NSS_SIGNALS_BLOCK SIGALRM,SIGVTALRM,SIGPIPE,SIGCHLD,SIGTSTP,SIGIO,SIGHUP,SIGUSR1,SIGUSR2,SIGPROF,SIGURG,SIGWINCH
+
#define NSS_GETHOSTBYNAME_PROTOTYPES(module) \
enum nss_status _nss_##module##_gethostbyname4_r( \
const char *name, \
int signal_from_string_try_harder(const char *s);
void nop_signal_handler(int sig);
+
+static inline void block_signals_reset(sigset_t *ss) {
+ assert_se(sigprocmask(SIG_SETMASK, ss, NULL) >= 0);
+}
+
+#define BLOCK_SIGNALS(...) \
+ _cleanup_(block_signals_reset) sigset_t _saved_sigset = ({ \
+ sigset_t t; \
+ assert_se(sigprocmask_many(SIG_BLOCK, &t, __VA_ARGS__, -1) >= 0); \
+ t; \
+ })
#include "local-addresses.h"
#include "macro.h"
#include "nss-util.h"
+#include "signal-util.h"
#include "string-util.h"
#include "util.h"
char *r_name;
unsigned n;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
assert(name);
assert(pat);
assert(buffer);
uint32_t local_address_ipv4 = 0;
int n_addresses = 0;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
assert(name);
assert(host);
assert(buffer);
bool additional_from_hostname = false;
unsigned n;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
assert(addr);
assert(host);
assert(buffer);
#include "in-addr-util.h"
#include "macro.h"
#include "nss-util.h"
+#include "signal-util.h"
#include "string-util.h"
#include "user-util.h"
#include "util.h"
char *r_name;
int n_ifindices, r;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
assert(name);
assert(pat);
assert(buffer);
size_t l, idx, ms, alen;
int r;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
assert(name);
assert(result);
assert(buffer);
size_t l;
int r;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
assert(name);
assert(pwd);
uint32_t mapped;
int r;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
if (!uid_is_valid(uid)) {
r = -EINVAL;
goto fail;
size_t l;
int r;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
assert(name);
assert(gr);
uint32_t mapped;
int r;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
if (!gid_is_valid(gid)) {
r = -EINVAL;
goto fail;
#include "nss-util.h"
#include "string-util.h"
#include "util.h"
+#include "signal-util.h"
NSS_GETHOSTBYNAME_PROTOTYPES(resolve);
NSS_GETHOSTBYADDR_PROTOTYPES(resolve);
char *r_name;
int c, r, i = 0;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
assert(name);
assert(pat);
assert(buffer);
const char *canonical;
int c, r, i = 0;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
assert(name);
assert(result);
assert(buffer);
const char *n;
int r, ifindex;
+ BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
+
assert(addr);
assert(result);
assert(buffer);
--- /dev/null
+/***
+ This file is part of systemd.
+
+ Copyright 2016 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "signal-util.h"
+
+static void test_block_signals(void) {
+ sigset_t ss;
+
+ assert_se(sigprocmask(0, NULL, &ss) >= 0);
+
+ assert_se(sigismember(&ss, SIGUSR1) == 0);
+ assert_se(sigismember(&ss, SIGALRM) == 0);
+ assert_se(sigismember(&ss, SIGVTALRM) == 0);
+
+ {
+ BLOCK_SIGNALS(SIGUSR1, SIGVTALRM);
+
+ assert_se(sigprocmask(0, NULL, &ss) >= 0);
+ assert_se(sigismember(&ss, SIGUSR1) == 1);
+ assert_se(sigismember(&ss, SIGALRM) == 0);
+ assert_se(sigismember(&ss, SIGVTALRM) == 1);
+
+ }
+
+ assert_se(sigprocmask(0, NULL, &ss) >= 0);
+ assert_se(sigismember(&ss, SIGUSR1) == 0);
+ assert_se(sigismember(&ss, SIGALRM) == 0);
+ assert_se(sigismember(&ss, SIGVTALRM) == 0);
+}
+
+int main(int argc, char *argv[]) {
+ test_block_signals();
+}