tests: check decoding of signal syscall

* tests/signal.c: New file.
* tests/gen_tests.in (signal): New entry.
* tests/pure_executables.list: Add signal.
* tests/.gitignore: Likewise.

diff --git a/tests/.gitignore b/tests/.gitignore
index babd949389f7517a9b3ec4f181fd7a055adc1dec..aa2d5d8ec58779f721ef1b7b3b81921952710657 100644 (file)
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -326,6 +326,7 @@ shutdown
 sigaction
 sigaltstack
 siginfo
+signal
 signal_receive
 signalfd4
 sigreturn

diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index be0a3a237115c5a27fa11bac846053074f4f754f..ad5fdd74610740d89b71bf4c16d55808e3c9260f 100644 (file)
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -281,6 +281,7 @@ setuid32    -a12
 shmxt  -a11 -e trace='/(osf_)?shmat,shmdt'
 shutdown       -a24
 siginfo        -e trace=none
+signal -a25 -e signal=none -e trace='/^signal$'
 signal_receive -a16 -e trace=kill
 signalfd4
 sigreturn      -esignal='!USR1'

diff --git a/tests/pure_executables.list b/tests/pure_executables.list
index cc65614a795eac06542e0c3fd567c9672b68c14d..3b0fbeb314e3e85c13bd929028a122edea3bb255 100755 (executable)
--- a/tests/pure_executables.list
+++ b/tests/pure_executables.list
@@ -269,6 +269,7 @@ shutdown
 sigaction
 sigaltstack
 siginfo
+signal
 signalfd4
 sigreturn
 sigsuspend

diff --git a/tests/signal.c b/tests/signal.c
new file mode 100644 (file)
index 0000000..edbc3d2
--- /dev/null
+++ b/tests/signal.c
@@ -0,0 +1,132 @@
+/*
+ * Check decoding of signal syscall.
+ *
+ * Copyright (c) 2017 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "tests.h"
+#include <asm/unistd.h>
+
+#ifdef __NR_signal
+
+# include <errno.h>
+# include <signal.h>
+# include <stdio.h>
+# include <stdint.h>
+# include <string.h>
+# include <unistd.h>
+
+static long
+k_signal(const kernel_ulong_t signum, const kernel_ulong_t handler)
+{
+       return syscall(__NR_signal, signum, handler);
+}
+
+int
+main(void)
+{
+       static const uintptr_t sig_ign = (uintptr_t) SIG_IGN;
+       static const uintptr_t sig_dfl = (uintptr_t) SIG_DFL;
+       static const kernel_ulong_t sigusr1 =
+               (kernel_ulong_t) 0xfacefeed00000000ULL | SIGUSR1;
+       static const struct sigaction act = { .sa_handler = SIG_DFL };
+       long rc;
+
+       sigset_t mask;
+       sigemptyset(&mask);
+       sigaddset(&mask, SIGUSR1);
+       if (sigprocmask(SIG_BLOCK, &mask, NULL))
+               perror_msg_and_fail("sigprocmask SIG_BLOCK");
+
+       if (sigaction(SIGUSR1, &act, NULL))
+               perror_msg_and_fail("sigaction");
+
+       rc = k_signal(sigusr1, sig_ign);
+
+       if (rc == -1L) {
+               printf("signal(SIGUSR1, SIG_IGN) = %s\n", sprintrc(rc));
+       } else if (rc != (long) sig_dfl) {
+               error_msg_and_fail("signal(SIGUSR1, SIG_IGN) = %#lx\n", rc);
+       } else {
+               printf("signal(SIGUSR1, SIG_IGN) = %#lx (SIG_DFL)\n", rc);
+
+               /*
+                * Raise and unblock SIGUSR1.
+                * If signal syscall failed to set SIGUSR1 handler to SIG_IGN,
+                * the process will be terminated by SIGUSR1.
+                */
+               raise(SIGUSR1);
+               if (sigprocmask(SIG_UNBLOCK, &mask, NULL))
+                       perror_msg_and_fail("sigprocmask SIG_UNBLOCK");
+
+               if (sigprocmask(SIG_BLOCK, &mask, NULL))
+                       perror_msg_and_fail("sigprocmask SIG_BLOCK");
+       }
+
+       rc = k_signal(SIGUSR1, sig_dfl);
+
+       if (rc == -1L) {
+               printf("signal(SIGUSR1, SIG_DFL) = %s\n", sprintrc(rc));
+       } else if (rc != (long) sig_ign) {
+               error_msg_and_fail("signal(SIGUSR1, SIG_DFL) = %#lx\n", rc);
+       } else {
+               printf("signal(SIGUSR1, SIG_DFL) = %#lx (SIG_IGN)\n", rc);
+       }
+
+       const kernel_ulong_t addr = (kernel_ulong_t) 0xfacefeeddeadbeefULL;
+       rc = k_signal(SIGUSR1, addr);
+
+       if (rc == -1L) {
+               printf("signal(SIGUSR1, %#llx) = %s\n",
+                      (unsigned long long) addr, sprintrc(rc));
+       } else if (rc != (long) sig_dfl) {
+               error_msg_and_fail("signal(SIGUSR1, %#llx) = %#lx\n",
+                                  (unsigned long long) addr, rc);
+       } else {
+               printf("signal(SIGUSR1, %#llx) = %#lx (SIG_DFL)\n",
+                      (unsigned long long) addr, rc);
+       }
+
+       rc = k_signal(SIGUSR1, sig_ign);
+
+       if (rc == -1L) {
+               printf("signal(SIGUSR1, SIG_IGN) = %s\n", sprintrc(rc));
+       } else {
+               printf("signal(SIGUSR1, SIG_IGN) = %#lx\n", rc);
+       }
+
+       rc = k_signal(addr, sig_ign);
+       printf("signal(%d, SIG_IGN) = %s\n", (int) addr, sprintrc(rc));
+
+       puts("+++ exited with 0 +++");
+       return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_signal")
+
+#endif