@@ -3,10 +3,13 @@
top_srcdir ?= ../../../../..
-LTPLIBS = ltpipc
+LTPLIBS = ltpipc ltpnewipc
include $(top_srcdir)/include/mk/testcases.mk
-LTPLDLIBS = -lltpipc
+shmdt01: LTPLDLIBS = -lltpnewipc
+shmdt02: LTPLDLIBS = -lltpipc
+
+LTPLDLIBS = -lltpipc ltpnewipc
include $(top_srcdir)/include/mk/generic_leaf_target.mk
@@ -1,223 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
- *
- * Copyright (c) International Business Machines Corp., 2001
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * Copyright (c) International Business Machines Corp., 2001
*/
-/*
- * NAME
- * shmdt01.c
- *
- * DESCRIPTION
- * shmdt01 - check that shared memory is detached correctly
- *
- * ALGORITHM
- * create a shared memory resource of size sizeof(int)
- * attach it to the current process and give it a value
- * call shmdt() using the TEST macro
- * check the return code
- * if failure, issue a FAIL message.
- * otherwise,
- * if doing functionality testing
- * attempt to write a value to the shared memory address
- * this should generate a SIGSEGV which will be caught in
- * the signal handler
- * if correct,
- * issue a PASS message
- * otherwise
- * issue a FAIL message
- * call cleanup
+/*\
+ * [Description]
*
- * USAGE: <for command-line>
- * shmdt01 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
- * where, -c n : Run n copies concurrently.
- * -f : Turn off functionality Testing.
- * -I x : Execute test for x seconds.
- * -P x : Pause for x seconds between iterations.
- * -t : Turn on syscall timing.
- *
- * HISTORY
- * 03/2001 - Written by Wayne Boyer
- *
- * 06/03/2008 Renaud Lottiaux (Renaud.Lottiaux@kerlabs.com)
- * - Fix wrong return value check on shmat system call (leading to
- * segfault in case of error with this syscall).
- *
- * RESTRICTIONS
- * none
+ * This case check whether we get SIGSEGV when write a value to a detached
+ * shared memory resource.
*/
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
#include <setjmp.h>
-#include "ipcshm.h"
+#include "tst_test.h"
+#include "libnewipc.h"
+#include "tst_safe_sysv_ipc.h"
-char *TCID = "shmdt01";
-int TST_TOTAL = 1;
+static int shm_id = -1, shm_key, pass;
+static int *shared;
+static sigjmp_buf env;
-void sighandler(int);
-struct shmid_ds buf;
-
-int shm_id_1 = -1;
-int *shared; /* variable to use for shared memory attach */
-int new;
-int pass = 0;
-sigjmp_buf env;
-
-int main(int ac, char **av)
+static void sighandler(int sig LTP_ATTRIBUTE_UNUSED)
{
- int lc;
- void check_functionality(void);
-
- tst_parse_opts(ac, av, NULL, NULL);
-
- setup(); /* global setup */
-
- /* The following loop checks looping state if -i option given */
-
- for (lc = 0; TEST_LOOPING(lc); lc++) {
- /* reset tst_count in case we are looping */
- tst_count = 0;
-
- /*
- * Use TEST macro to make the shmdt() call
- */
-
- TEST(shmdt((const void *)shared));
-
- if (TEST_RETURN == -1) {
- tst_resm(TFAIL, "%s call failed - errno = %d : %s",
- TCID, TEST_ERRNO, strerror(TEST_ERRNO));
- } else {
- check_functionality();
- }
-
- /* reattach the shared memory segment in case we are looping */
- shared = shmat(shm_id_1, 0, 0);
-
- if (shared == (void *)-1) {
- tst_brkm(TBROK, cleanup, "memory reattach failed");
- }
-
- /* also reset pass */
- pass = 0;
- }
-
- cleanup();
-
- tst_exit();
+ pass = 1;
+ siglongjmp(env, 1);
}
-/*
- * check_functionality() - make sure the memory is detached correctly
- */
-void check_functionality(void)
+static void check_functionality(void)
{
- /* stat the shared memory segment */
- if (shmctl(shm_id_1, IPC_STAT, &buf) == -1)
- tst_brkm(TBROK | TERRNO, cleanup,
- "could not stat in signal handler");
+ struct shmid_ds buf;
- if (buf.shm_nattch != 0) {
- tst_resm(TFAIL, "# of attaches is incorrect");
+ SAFE_SHMCTL(shm_id, IPC_STAT, &buf);
+ TST_EXP_EQ_LI(buf.shm_nattch, 0);
+ if (buf.shm_nattch)
return;
- }
- /*
- * Try writing to the shared memory. This should generate a
- * SIGSEGV which will be caught below.
- *
- * This is wrapped by the sigsetjmp() call that will take care of
- * restoring the program's context in an elegant way in conjunction
- * with the call to siglongjmp() in the signal handler.
- *
- * An attempt to do the assignment without using the sigsetjmp()
- * and siglongjmp() calls will result in an infinite loop. Program
- * control is returned to the assignment statement after the execution
- * of the signal handler and another SIGSEGV will be generated.
- */
-
- if (sigsetjmp(env, 1) == 0) {
+ if (sigsetjmp(env, 1) == 0)
*shared = 2;
- }
-
- if (pass) {
- tst_resm(TPASS, "shared memory detached correctly");
- } else {
- tst_resm(TFAIL, "shared memory was not detached correctly");
- }
-}
-void sighandler(int sig)
-{
- /* if we have received a SIGSEGV, we are almost done */
- if (sig == SIGSEGV) {
- /* set the global variable and jump back */
- pass = 1;
- siglongjmp(env, 1);
- } else
- tst_brkm(TBROK, cleanup,
- "received an unexpected signal: %d", sig);
+ if (pass)
+ tst_res(TPASS, "shared memory detached correctly");
+ else
+ tst_res(TFAIL, "shared memory was not detached correctly");
}
-/*
- * setup() - performs all the ONE TIME setup for this test.
- */
-void setup(void)
+static void verify_shmdt(void)
{
-
- tst_sig(NOFORK, sighandler, cleanup);
-
- TEST_PAUSE;
-
- /*
- * Create a temporary directory and cd into it.
- * This helps to ensure that a unique msgkey is created.
- * See libs/libltpipc/libipc.c for more information.
- */
- tst_tmpdir();
-
- /* get an IPC resource key */
- shmkey = getipckey();
-
- /* create a shared memory resource with read and write permissions */
- if ((shm_id_1 = shmget(shmkey, INT_SIZE, SHM_RW | IPC_CREAT |
- IPC_EXCL)) == -1) {
- tst_brkm(TBROK, cleanup, "Failed to create shared memory "
- "resource in setup()");
- }
-
- /* attach the shared memory segment */
- shared = shmat(shm_id_1, 0, 0);
-
- if (shared == (void *)-1) {
- tst_brkm(TBROK, cleanup, "Couldn't attach shared memory");
+ TST_EXP_PASS_SILENT(shmdt(shared));
+ if (TST_PASS) {
+ check_functionality();
+ shared = SAFE_SHMAT(shm_id, 0, 0);
}
- /* give a value to the shared memory integer */
- *shared = 4;
+ pass = 0;
}
-/*
- * cleanup() - performs all the ONE TIME cleanup for this test at completion
- * or premature exit.
- */
-void cleanup(void)
+static void setup(void)
{
- /* if it exists, delete the shared memory resource */
- rm_shm(shm_id_1);
+ shm_key = GETIPCKEY();
+ shm_id = SAFE_SHMGET(shm_key, INT_SIZE, SHM_RW | IPC_CREAT | IPC_EXCL);
- tst_rmdir();
+ SAFE_SIGNAL(SIGSEGV, sighandler);
+ shared = SAFE_SHMAT(shm_id, 0, 0);
+}
+static void cleanup(void)
+{
+ if (shm_id != -1)
+ SAFE_SHMCTL(shm_id, IPC_RMID, NULL);
}
+
+static struct tst_test test = {
+ .needs_tmpdir = 1,
+ .needs_root = 1,
+ .setup = setup,
+ .cleanup = cleanup,
+ .test_all = verify_shmdt,
+};