[LTP] [PATCH v3 1/4] Refactor ioctl02.c to use the new test API
Marius Kittler
mkittler@suse.de
Thu Sep 7 17:51:41 CEST 2023
This test code itself has been kept unchanged as much as possible
(although it probably still has room for improvement).
See https://github.com/linux-test-project/ltp/issues/637 for related
discussion.
Signed-off-by: Marius Kittler <mkittler@suse.de>
---
testcases/kernel/syscalls/ioctl/ioctl02.c | 280 +++++++---------------
1 file changed, 90 insertions(+), 190 deletions(-)
diff --git a/testcases/kernel/syscalls/ioctl/ioctl02.c b/testcases/kernel/syscalls/ioctl/ioctl02.c
index b4d4a3594..77283e510 100644
--- a/testcases/kernel/syscalls/ioctl/ioctl02.c
+++ b/testcases/kernel/syscalls/ioctl/ioctl02.c
@@ -1,31 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
- * Copyright (c) International Business Machines Corp., 2001
- * Copyright (c) 2020 Petr Vorel <pvorel@suse.cz>
- *
- * 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
+ * Copyright (c) 2020 Petr Vorel <pvorel@suse.cz>
+ * Copyright (c) 2023 Marius Kittler <mkittler@suse.de>
*/
-/*
- * NAME
- * ioctl02.c
+/*\
+ * [Description]
*
- * DESCRIPTION
* Testcase to test the TCGETA, and TCSETA ioctl implementations for
* the tty driver
*
- * ALGORITHM
* In this test, the parent and child open the parentty and the childtty
* respectively. After opening the childtty the child flushes the stream
* and sends a SIGUSR1 to the parent (thereby asking it to continue its
@@ -38,22 +23,6 @@
* set. The parent does all the testing, the requirement of the child
* process is to moniter the testing done by the parent, and hence the
* child just waits for the parent.
- *
- * USAGE: <for command-line>
- * ioctl02 -D /dev/tty[0-9] [-c n] [-f] [-i n] [-I x] [-P x] [-t]
- * where, -c n : Run n copies concurrently.
- * -f : Turn off functionality Testing.
- * -i n : Execute test n times.
- * -I x : Execute test for x seconds.
- * -P x : Pause for x seconds between iterations.
- * -t : Turn on syscall timing.
- *
- * HISTORY
- * 07/2001 Ported by Wayne Boyer
- *
- * RESTRICTIONS
- * test must be run with the -D option
- * test may have to be run as root depending on the tty permissions
*/
#include <stdio.h>
@@ -64,22 +33,17 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <termios.h>
-#include "test.h"
-#include "safe_macros.h"
-#include "lapi/ioctl.h"
+#include "tst_test.h"
+#include "tst_safe_macros.h"
#define CNUL 0
-char *TCID = "ioctl02";
-int TST_TOTAL = 1;
-
static struct termio termio, save_io;
static char *parenttty, *childtty;
-static int parentfd, childfd;
+static int parentfd = -1, childfd = -1;
static int parentpid, childpid;
static volatile int sigterm, sigusr1, sigusr2;
-static int closed = 1;
static int do_child_setup(void);
static int do_parent_setup(void);
@@ -88,108 +52,63 @@ static int run_ctest(void);
static int chk_tty_parms();
static void setup(void);
static void cleanup(void);
-static void help(void);
static void do_child(void);
-void do_child_uclinux(void);
static void sigterm_handler(void);
-static int Devflag;
-static char *devname;
+static char *device;
-static option_t options[] = {
- {"D:", &Devflag, &devname},
- {NULL, NULL, NULL}
-};
-
-int main(int ac, char **av)
+static void verify_ioctl(void)
{
- int lc;
- int rval;
-
- tst_parse_opts(ac, av, options, &help);
-
-#ifdef UCLINUX
- maybe_run_child(&do_child_uclinux, "dS", &parentpid, &childtty);
-#endif
-
- if (!Devflag)
- tst_brkm(TBROK, NULL, "You must specify a tty device with "
- "the -D option.");
-
- tst_require_root();
-
- setup();
+ parenttty = device;
+ childtty = device;
- for (lc = 0; TEST_LOOPING(lc); lc++) {
+ parentpid = getpid();
+ childpid = SAFE_FORK();
+ if (childpid == 0)
+ do_child();
- tst_count = 0;
-
- parenttty = devname;
- childtty = devname;
-
- parentpid = getpid();
-
- childpid = FORK_OR_VFORK();
- if (childpid < 0)
- tst_brkm(TBROK, cleanup, "fork failed");
-
- if (childpid == 0) { /* child */
-#ifdef UCLINUX
- if (self_exec(av[0], "dS", parentpid, childtty) < 0)
- tst_brkm(TBROK, cleanup, "self_exec failed");
-#else
- do_child();
-#endif
- }
-
- while (!sigusr1)
- sleep(1);
-
- sigusr1 = 0;
-
- parentfd = do_parent_setup();
- if (parentfd < 0) {
- kill(childpid, SIGTERM);
- waitpid(childpid, NULL, 0);
- cleanup();
- }
-
- /* run the parent test */
- rval = run_ptest();
- if (rval == -1) {
- /*
- * Parent cannot set/get ioctl parameters.
- * SIGTERM the child and cleanup.
- */
- kill(childpid, SIGTERM);
- waitpid(childpid, NULL, 0);
- cleanup();
- }
+ while (!sigusr1)
+ sleep(1);
- if (rval != 0)
- tst_resm(TFAIL, "TCGETA/TCSETA tests FAILED with "
- "%d %s", rval, rval > 1 ? "errors" : "error");
- else
- tst_resm(TPASS, "TCGETA/TCSETA tests SUCCEEDED");
+ sigusr1 = 0;
- /* FIXME: check return codes. */
- (void)kill(childpid, SIGTERM);
- (void)waitpid(childpid, NULL, 0);
+ parentfd = do_parent_setup();
+ if (parentfd < 0) {
+ kill(childpid, SIGTERM);
+ waitpid(childpid, NULL, 0);
+ cleanup();
+ }
+ /* run the parent test */
+ int rval = run_ptest();
+ if (rval == -1) {
/*
- * Clean up things from the parent by restoring the
- * tty device information that was saved in setup()
- * and closing the tty file descriptor.
+ * Parent cannot set/get ioctl parameters.
+ * SIGTERM the child and cleanup.
*/
- if (ioctl(parentfd, TCSETA, &save_io) == -1)
- tst_resm(TINFO, "ioctl restore failed in main");
- SAFE_CLOSE(cleanup, parentfd);
-
- closed = 1;
+ kill(childpid, SIGTERM);
+ waitpid(childpid, NULL, 0);
+ cleanup();
}
- cleanup();
- tst_exit();
+ if (rval != 0)
+ tst_res(TFAIL, "TCGETA/TCSETA tests FAILED with "
+ "%d %s", rval, rval > 1 ? "errors" : "error");
+ else
+ tst_res(TPASS, "TCGETA/TCSETA tests SUCCEEDED");
+
+ /* FIXME: check return codes. */
+ (void)kill(childpid, SIGTERM);
+ (void)waitpid(childpid, NULL, 0);
+
+ /*
+ * Clean up things from the parent by restoring the
+ * tty device information that was saved in setup()
+ * and closing the tty file descriptor.
+ */
+ if (ioctl(parentfd, TCSETA, &save_io) == -1)
+ tst_res(TINFO, "ioctl restore failed in main");
+ SAFE_CLOSE(parentfd);
}
static void do_child(void)
@@ -201,28 +120,12 @@ static void do_child(void)
_exit(0);
}
-void do_child_uclinux(void)
-{
- struct sigaction act;
-
- /* Set up the signal handlers again */
- act.sa_handler = (void *)sigterm_handler;
- act.sa_flags = 0;
- sigemptyset(&act.sa_mask);
- (void)sigaction(SIGTERM, &act, 0);
-
- /* Run the normal child */
- do_child();
-}
-
/*
* run_ptest() - setup the various termio structure values and issue
* the TCSETA ioctl call with the TEST macro.
*/
static int run_ptest(void)
{
- int i, rval;
-
/* Use "old" line discipline */
termio.c_line = 0;
@@ -230,7 +133,7 @@ static int run_ptest(void)
termio.c_cflag = B50 | CS7 | CREAD | PARENB | PARODD | CLOCAL;
/* Set control chars. */
- for (i = 0; i < NCC; i++) {
+ for (int i = 0; i < NCC; i++) {
if (i == VEOL2)
continue;
termio.c_cc[i] = CSTART;
@@ -250,16 +153,10 @@ static int run_ptest(void)
TEST(ioctl(parentfd, TCSETA, &termio));
- if (TEST_RETURN < 0) {
- tst_resm(TFAIL, "ioctl TCSETA failed : "
- "errno = %d", TEST_ERRNO);
- return -1;
- }
-
/* Get termio and see if all parameters actually got set */
- rval = ioctl(parentfd, TCGETA, &termio);
+ int rval = ioctl(parentfd, TCGETA, &termio);
if (rval < 0) {
- tst_resm(TFAIL, "ioctl TCGETA failed. Ending test.");
+ tst_res(TFAIL, "ioctl TCGETA failed. Ending test.");
return -1;
}
@@ -276,10 +173,10 @@ static int run_ctest(void)
sigterm = 0;
- tst_resm(TINFO, "child: Got SIGTERM from parent.");
+ tst_res(TINFO, "child: Got SIGTERM from parent.");
if (close(childfd) == -1)
- tst_resm(TINFO, "close() in run_ctest() failed");
+ tst_res(TINFO, "close() in run_ctest() failed");
return 0;
}
@@ -288,7 +185,7 @@ static int chk_tty_parms(void)
int i, flag = 0;
if (termio.c_line != 0) {
- tst_resm(TINFO, "line discipline has incorrect value %o",
+ tst_res(TINFO, "line discipline has incorrect value %o",
termio.c_line);
flag++;
}
@@ -301,7 +198,7 @@ static int chk_tty_parms(void)
*/
#if 0
if (termio.c_cflag != (B50 | CS7 | CREAD | PARENB | PARODD | CLOCAL)) {
- tst_resm(TINFO, "cflag has incorrect value. %o",
+ tst_res(TINFO, "cflag has incorrect value. %o",
termio.c_cflag);
flag++;
}
@@ -312,7 +209,7 @@ static int chk_tty_parms(void)
if (termio.c_cc[VEOL2] == CNUL) {
continue;
} else {
- tst_resm(TINFO, "control char %d has "
+ tst_res(TINFO, "control char %d has "
"incorrect value %d %d", i,
termio.c_cc[i], CNUL);
flag++;
@@ -321,7 +218,7 @@ static int chk_tty_parms(void)
}
if (termio.c_cc[i] != CSTART) {
- tst_resm(TINFO, "control char %d has incorrect "
+ tst_res(TINFO, "control char %d has incorrect "
"value %d.", i, termio.c_cc[i]);
flag++;
}
@@ -330,7 +227,7 @@ static int chk_tty_parms(void)
if (!
(termio.c_lflag
&& (ISIG | ICANON | XCASE | ECHO | ECHOE | NOFLSH))) {
- tst_resm(TINFO, "lflag has incorrect value. %o",
+ tst_res(TINFO, "lflag has incorrect value. %o",
termio.c_lflag);
flag++;
}
@@ -339,34 +236,29 @@ static int chk_tty_parms(void)
(termio.c_iflag
&& (BRKINT | IGNPAR | INPCK | ISTRIP | ICRNL | IUCLC | IXON | IXANY
| IXOFF))) {
- tst_resm(TINFO, "iflag has incorrect value. %o",
+ tst_res(TINFO, "iflag has incorrect value. %o",
termio.c_iflag);
flag++;
}
if (!(termio.c_oflag && (OPOST | OLCUC | ONLCR | ONOCR))) {
- tst_resm(TINFO, "oflag has incorrect value. %o",
+ tst_res(TINFO, "oflag has incorrect value. %o",
termio.c_oflag);
flag++;
}
if (!flag)
- tst_resm(TINFO, "termio values are set as expected");
+ tst_res(TINFO, "termio values are set as expected");
return flag;
}
static int do_parent_setup(void)
{
- int pfd;
-
- pfd = SAFE_OPEN(cleanup, parenttty, O_RDWR, 0777);
-
- /* unset the closed flag */
- closed = 0;
+ int pfd = SAFE_OPEN(parenttty, O_RDWR, 0777);
/* flush tty queues to remove old output */
- SAFE_IOCTL(cleanup, pfd, TCFLSH, 2);
+ SAFE_IOCTL(pfd, TCFLSH, 2);
return pfd;
}
@@ -376,7 +268,7 @@ static int do_child_setup(void)
cfd = open(childtty, O_RDWR, 0777);
if (cfd < 0) {
- tst_resm(TINFO, "Could not open %s in do_child_setup(), errno "
+ tst_res(TINFO, "Could not open %s in do_child_setup(), errno "
"= %d", childtty, errno);
/* signal the parent so we don't hang the test */
kill(parentpid, SIGUSR1);
@@ -385,7 +277,7 @@ static int do_child_setup(void)
/* flush tty queues to remove old output */
if (ioctl(cfd, TCFLSH, 2) < 0) {
- tst_resm(TINFO, "ioctl TCFLSH failed. : errno = %d", errno);
+ tst_res(TINFO, "ioctl TCFLSH failed. : errno = %d", errno);
/* signal the parent so we don't hang the test */
kill(parentpid, SIGUSR1);
return -1;
@@ -415,24 +307,22 @@ static void sigusr2_handler(void)
sigusr2 = 1;
}
-static void help(void)
-{
- printf(" -D <tty device> : for example, /dev/tty[0-9]\n");
-}
-
static void setup(void)
{
+ if (!device)
+ tst_brk(TBROK, "You must specify a tty device with -D option");
+
int fd;
struct sigaction act;
/* XXX: TERRNO required all over the place */
- fd = SAFE_OPEN(NULL, devname, O_RDWR, 0777);
+ fd = SAFE_OPEN(device, O_RDWR, 0777);
/* Save the current device information - to be restored in cleanup() */
- SAFE_IOCTL(cleanup, fd, TCGETA, &save_io);
+ SAFE_IOCTL(fd, TCGETA, &save_io);
/* Close the device */
- SAFE_CLOSE(cleanup, fd);
+ SAFE_CLOSE(fd);
/* Set up the signal handlers */
act.sa_handler = (void *)sigterm_handler;
@@ -453,16 +343,26 @@ static void setup(void)
(void)sigaction(SIGTTOU, &act, 0);
sigterm = sigusr1 = sigusr2 = 0;
-
- TEST_PAUSE;
}
static void cleanup(void)
{
- if (!closed) {
+ if (parentfd != -1) {
if (ioctl(parentfd, TCSETA, &save_io) == -1)
- tst_resm(TINFO, "ioctl restore failed in cleanup()");
+ tst_res(TINFO, "ioctl restore failed in cleanup()");
if (close(parentfd) == -1)
- tst_resm(TINFO, "close() failed in cleanup()");
+ tst_res(TINFO, "close() failed in cleanup()");
}
}
+
+static struct tst_test test = {
+ .needs_root = 1,
+ .forks_child = 1,
+ .setup = setup,
+ .cleanup = cleanup,
+ .test_all = verify_ioctl,
+ .options = (struct tst_option[]) {
+ {"D:", &device, "Tty device. For example, /dev/tty[0-9]"},
+ {}
+ }
+};
\ No newline at end of file
--
2.42.0
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