syscalls: implemented a test for sched_setaffinity() error values

This test verifies sched_setaffinity(2) for all error conditions to occur correctly.

Signed-off-by Stanislav Kholmanskikh <[email protected]>

---
Changes since V3:
* use tst_fork() instead of fork() for privileged_pid
* use tst_get_unused_pid() for free_pid

From: "Stanislav Kholmanskikh" <[email protected]>
To: [email protected]
Cc: "vasily isaenko" <[email protected]>
Sent: Wednesday, 2 July, 2014 9:30:58 AM
Subject: [LTP] [PATCH V4] syscalls: implemented a test for sched_setaffinity() error values

This test verifies sched_setaffinity(2) for all error conditions to occur correctly.

Signed-off-by Stanislav Kholmanskikh <[email protected]>

---
Changes since V3:
* use tst_fork() instead of fork() for privileged_pid
* use tst_get_unused_pid() for free_pid

 runtest/syscalls                                   |    1 +
 testcases/kernel/syscalls/.gitignore               |    1 +
 .../kernel/syscalls/sched_setaffinity/Makefile     |   23 +++
 .../syscalls/sched_setaffinity/sched_setaffinity.h |   60 +++++++
 .../sched_setaffinity/sched_setaffinity01.c        |  177
 ++++++++++++++++++++
 5 files changed, 262 insertions(+), 0 deletions(-)
 create mode 100644 testcases/kernel/syscalls/sched_setaffinity/Makefile
 create mode 100644
 testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h
 create mode 100644

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c

runtest/syscalls +1 -0

index 66d6a65..52556bc 100644
@@ -895,6 +895,7 @@ sched_setscheduler02 sched_setscheduler02
 
 sched_yield01 sched_yield01
 
+sched_setaffinity01 sched_setaffinity01
 sched_getaffinity01 sched_getaffinity01
 
 select01 select01

testcases/kernel/syscalls/.gitignore +1 -0

index 975c150..0c31582 100644
@@ -724,6 +724,7 @@
 /sched_rr_get_interval/sched_rr_get_interval01
 /sched_rr_get_interval/sched_rr_get_interval02
 /sched_rr_get_interval/sched_rr_get_interval03
+/sched_setaffinity/sched_setaffinity01
 /sched_setparam/sched_setparam01
 /sched_setparam/sched_setparam02
 /sched_setparam/sched_setparam03

testcases/kernel/syscalls/sched_setaffinity/Makefile new file +16 -0

new file mode 100644
index 0000000..2d825f1
@@ -0,0 +1,23 @@
+#
+#  Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+#
+#  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 St, Fifth Floor, Boston, MA  02110-1301

USA

testcases/kernel/syscalls/sched_setaffinity/Makefile new file +7 -0

+#
+
+top_srcdir		?= ../../../..
+
+include $(top_srcdir)/include/mk/testcases.mk
+
+include $(top_srcdir)/include/mk/generic_leaf_target.mk

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h new file +60 -0

new file mode 100644
index 0000000..8083894
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+ *
+ * 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 would 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 the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ * Some old libcs (like glibc < 2.7) do not provide interfaces for
+ * dynamically sized cpu sets, but provide only static cpu_set_t type
+ * with no more than CPU_SETSIZE cpus in it.
+ *
+ * This file is a wrapper of the dynamic interfaces using the static ones.
+ *
+ * If the number of cpus available on the system is greater than
+ * CPU_SETSIZE, this interface will not work. Update libc in this case :)
+ */
+
+#define _GNU_SOURCE
+#include <sched.h>
+
+#ifndef LTP_SCHED_SETAFFINITY_H
+#define LTP_SCHED_SETAFFINITY_H
+
+#ifndef CPU_ALLOC
+#define CPU_ALLOC(ncpus) malloc(sizeof(cpu_set_t)); \
+if (ncpus > CPU_SETSIZE) { \
+	tst_brkm(TCONF, cleanup, \
+		"Your libc does not support masks with %ld cpus", ncpus); \
+}
+#endif
+
+#ifndef CPU_FREE
+#define CPU_FREE(ptr) free(ptr);
+#endif
+
+#ifndef CPU_ALLOC_SIZE
+#define CPU_ALLOC_SIZE(size) sizeof(cpu_set_t);
+#endif
+
+#ifndef CPU_ZERO_S
+#define CPU_ZERO_S(size, mask) CPU_ZERO(mask);
+#endif
+
+#ifndef CPU_SET_S
+#define CPU_SET_S(cpu, size, mask) CPU_SET(cpu, mask);
+#endif
+
+#endif /* LTP_SCHED_SETAFFINITY_H */

diff --git a/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c b/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c new file mode 100644
index 0000000..d1b2abe

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c new file +177 -1

@@ -0,0 +1,177 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+ *
+ * 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 would 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 the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ * This test verifies sched_setaffinity(2) for all error conditions
+ * to occur correctly.
+ *
+ * sched_setaffinity() returns -1 and sets the error code to:
+ *
+ * 1) EFAULT, if the supplied memory address is invalid
+ * 2) EINVAL, if the mask doesn't contain at least one
+ *    permitted cpu
+ * 3) ESRCH, if the process whose id is pid could not
+ *    be found
+ * 4) EPERM, if the calling process doesn't have appropriate
+ *    privileges
+ */
+
+#define _GNU_SOURCE
+#include <errno.h>
+#include <pwd.h>
+#include <sched.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include "test.h"
+#include "usctest.h"
+#include "safe_macros.h"
+#include "sched_setaffinity.h"
+
+char *TCID = "sched_setaffinity01";
+
+#define PID_MAX_PATH "/proc/sys/kernel/pid_max"
+
+static cpu_set_t *mask, *emask;
+static cpu_set_t *fmask = (void *)-1;
+static size_t mask_size, emask_size;
+static pid_t self_pid, privileged_pid, free_pid;
+static uid_t uid;
+static const char nobody_uid[] = "nobody";
+static struct passwd *ltpuser;
+static long ncpus;
+
+static struct test_case_t {
+	pid_t *pid;
+	size_t *mask_size;
+	cpu_set_t **mask;
+	int exp_errno;
+} test_cases[] = {
+	{&self_pid, &mask_size, &fmask, EFAULT},
+	{&self_pid, &emask_size, &emask, EINVAL},
+	{&free_pid, &mask_size, &mask, ESRCH},
+	{&privileged_pid, &mask_size, &mask, EPERM},
+};
+
+int TST_TOTAL = ARRAY_SIZE(test_cases);
+
+static void cleanup(void)
+{
+	if (mask != NULL) {
+		CPU_FREE(mask);
+		mask = NULL;
+	}
+
+	if (emask != NULL) {
+		CPU_FREE(emask);
+		emask = NULL;
+	}
+
+	SAFE_SETEUID(NULL, uid);
+
+	if (privileged_pid != 0) {
+		kill(privileged_pid, SIGKILL);
+		waitpid(privileged_pid, NULL, 0);
+		privileged_pid = 0;
+	}
+}
+
+static void setup(void)
+{
+	tst_require_root(NULL);
+	uid = geteuid();
+	ncpus = tst_ncpus_max();
+
+	/* Current mask */
+	mask = CPU_ALLOC(ncpus);
+	if (mask == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup, "CPU_ALLOC(%ld) failed",
+			ncpus);
+	mask_size = CPU_ALLOC_SIZE(ncpus);
+	if (sched_getaffinity(0, mask_size, mask) < 0)
+		tst_brkm(TBROK | TERRNO, cleanup, "sched_getaffinity() failed");
+
+	/* Mask with one more cpu than available on the system */
+	emask = CPU_ALLOC(ncpus + 1);
+	if (emask == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup, "CPU_ALLOC(%ld) failed",
+			ncpus + 1);
+	emask_size = CPU_ALLOC_SIZE(ncpus + 1);
+	CPU_ZERO_S(emask_size, emask);
+	CPU_SET_S(ncpus, emask_size, emask);
+
+	privileged_pid = tst_fork();
+	if (privileged_pid == 0) {
+		pause();
+
+		exit(0);
+	} else if (privileged_pid < 0) {
+		tst_brkm(TBROK | TERRNO, cleanup, "fork() failed");
+	}
+
+	/* Dropping the root privileges */
+	ltpuser = getpwnam(nobody_uid);
+	if (ltpuser == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			"getpwnam failed for user id %s", nobody_uid);
+
+	SAFE_SETEUID(cleanup, ltpuser->pw_uid);
+
+	/* this pid is not used by the OS */
+	free_pid = tst_get_unused_pid(cleanup);
+}
+
+int main(int argc, char *argv[])
+{
+	const char *msg;
+	int lc;
+	int i;
+
+	msg = parse_opts(argc, argv, NULL, NULL);
+	if (msg != NULL)
+		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
+
+	setup();
+
+	for (lc = 0; TEST_LOOPING(lc); lc++) {
+		tst_count = 0;
+		for (i = 0; i < TST_TOTAL; i++) {
+			TEST(sched_setaffinity(*(test_cases[i].pid),
+						*(test_cases[i].mask_size),
+						*(test_cases[i].mask)));
+
+			if (TEST_RETURN != -1)
+				tst_resm(TFAIL,
+					"sched_setaffinity() unexpectedly succeded");
+
+			if (TEST_ERRNO == test_cases[i].exp_errno) {
+				tst_resm(TPASS, "expected failure with '%s'",
+					strerror(test_cases[i].exp_errno));
+			} else {
+				tst_resm(TFAIL,
+					"call returned '%s', expected - '%s'",
+					strerror(TEST_ERRNO),
+					strerror(test_cases[i].exp_errno));
+			}
+		}
+	}
+
+	cleanup();
+	tst_exit();
+}
--

1.7.1

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----- Original Message -----

Quoted 6 lines

From: "Stanislav Kholmanskikh" <[email protected]>
To: [email protected]
Cc: "vasily isaenko" <[email protected]>
Sent: Wednesday, 2 July, 2014 9:30:58 AM
Subject: [LTP] [PATCH V4] syscalls: implemented a test for sched_setaffinity() error values

Quoted 4 lines

This test verifies sched_setaffinity(2) for all error conditions to occur correctly.

Signed-off-by Stanislav Kholmanskikh <[email protected]>

Looks good to me, just a small nit: have a look at checkpatch output.

Reviewed-by Jan Stancek <[email protected]>

Regards,
Jan

Quoted 330 lines

---
Changes since V3:
* use tst_fork() instead of fork() for privileged_pid
* use tst_get_unused_pid() for free_pid

  runtest/syscalls                                   |    1 +
  testcases/kernel/syscalls/.gitignore               |    1 +
  .../kernel/syscalls/sched_setaffinity/Makefile     |   23 +++
  .../syscalls/sched_setaffinity/sched_setaffinity.h |   60 +++++++
  .../sched_setaffinity/sched_setaffinity01.c        |  177
  ++++++++++++++++++++
  5 files changed, 262 insertions(+), 0 deletions(-)

create mode 100644 testcases/kernel/syscalls/sched_setaffinity/Makefile create mode 100644 testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h create mode 100644 testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c

runtest/syscalls +1 -0

index 66d6a65..52556bc 100644
@@ -895,6 +895,7 @@ sched_setscheduler02 sched_setscheduler02
 
  sched_yield01 sched_yield01
 
+sched_setaffinity01 sched_setaffinity01
  sched_getaffinity01 sched_getaffinity01
 
  select01 select01

testcases/kernel/syscalls/.gitignore +1 -0

index 975c150..0c31582 100644
@@ -724,6 +724,7 @@
  /sched_rr_get_interval/sched_rr_get_interval01
  /sched_rr_get_interval/sched_rr_get_interval02
  /sched_rr_get_interval/sched_rr_get_interval03
+/sched_setaffinity/sched_setaffinity01
  /sched_setparam/sched_setparam01
  /sched_setparam/sched_setparam02
  /sched_setparam/sched_setparam03

testcases/kernel/syscalls/sched_setaffinity/Makefile new file +16 -0

new file mode 100644
index 0000000..2d825f1
@@ -0,0 +1,23 @@
+#
+#  Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+#
+#  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 St, Fifth Floor, Boston, MA  02110-1301

USA

testcases/kernel/syscalls/sched_setaffinity/Makefile new file +7 -0

+#
+
+top_srcdir		?= ../../../..
+
+include $(top_srcdir)/include/mk/testcases.mk
+
+include $(top_srcdir)/include/mk/generic_leaf_target.mk

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h new file +60 -0

new file mode 100644
index 0000000..8083894
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+ *
+ * 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 would 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 the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ * Some old libcs (like glibc < 2.7) do not provide interfaces for
+ * dynamically sized cpu sets, but provide only static cpu_set_t type
+ * with no more than CPU_SETSIZE cpus in it.
+ *
+ * This file is a wrapper of the dynamic interfaces using the static ones.
+ *
+ * If the number of cpus available on the system is greater than
+ * CPU_SETSIZE, this interface will not work. Update libc in this case :)
+ */
+
+#define _GNU_SOURCE
+#include <sched.h>
+
+#ifndef LTP_SCHED_SETAFFINITY_H
+#define LTP_SCHED_SETAFFINITY_H
+
+#ifndef CPU_ALLOC
+#define CPU_ALLOC(ncpus) malloc(sizeof(cpu_set_t)); \
+if (ncpus > CPU_SETSIZE) { \
+	tst_brkm(TCONF, cleanup, \
+		"Your libc does not support masks with %ld cpus", ncpus); \
+}
+#endif
+
+#ifndef CPU_FREE
+#define CPU_FREE(ptr) free(ptr);
+#endif
+
+#ifndef CPU_ALLOC_SIZE
+#define CPU_ALLOC_SIZE(size) sizeof(cpu_set_t);
+#endif
+
+#ifndef CPU_ZERO_S
+#define CPU_ZERO_S(size, mask) CPU_ZERO(mask);
+#endif
+
+#ifndef CPU_SET_S
+#define CPU_SET_S(cpu, size, mask) CPU_SET(cpu, mask);
+#endif
+
+#endif /* LTP_SCHED_SETAFFINITY_H */

diff --git a/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c b/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c new file mode 100644
index 0000000..d1b2abe

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c new file +177 -1

@@ -0,0 +1,177 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+ *
+ * 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 would 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 the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ * This test verifies sched_setaffinity(2) for all error conditions
+ * to occur correctly.
+ *
+ * sched_setaffinity() returns -1 and sets the error code to:
+ *
+ * 1) EFAULT, if the supplied memory address is invalid
+ * 2) EINVAL, if the mask doesn't contain at least one
+ *    permitted cpu
+ * 3) ESRCH, if the process whose id is pid could not
+ *    be found
+ * 4) EPERM, if the calling process doesn't have appropriate
+ *    privileges
+ */
+
+#define _GNU_SOURCE
+#include <errno.h>
+#include <pwd.h>
+#include <sched.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include "test.h"
+#include "usctest.h"
+#include "safe_macros.h"
+#include "sched_setaffinity.h"
+
+char *TCID = "sched_setaffinity01";
+
+#define PID_MAX_PATH "/proc/sys/kernel/pid_max"
+
+static cpu_set_t *mask, *emask;
+static cpu_set_t *fmask = (void *)-1;
+static size_t mask_size, emask_size;
+static pid_t self_pid, privileged_pid, free_pid;
+static uid_t uid;
+static const char nobody_uid[] = "nobody";
+static struct passwd *ltpuser;
+static long ncpus;
+
+static struct test_case_t {
+	pid_t *pid;
+	size_t *mask_size;
+	cpu_set_t **mask;
+	int exp_errno;
+} test_cases[] = {
+	{&self_pid, &mask_size, &fmask, EFAULT},
+	{&self_pid, &emask_size, &emask, EINVAL},
+	{&free_pid, &mask_size, &mask, ESRCH},
+	{&privileged_pid, &mask_size, &mask, EPERM},
+};
+
+int TST_TOTAL = ARRAY_SIZE(test_cases);
+
+static void cleanup(void)
+{
+	if (mask != NULL) {
+		CPU_FREE(mask);
+		mask = NULL;
+	}
+
+	if (emask != NULL) {
+		CPU_FREE(emask);
+		emask = NULL;
+	}
+
+	SAFE_SETEUID(NULL, uid);
+
+	if (privileged_pid != 0) {
+		kill(privileged_pid, SIGKILL);
+		waitpid(privileged_pid, NULL, 0);
+		privileged_pid = 0;
+	}
+}
+
+static void setup(void)
+{
+	tst_require_root(NULL);
+	uid = geteuid();
+	ncpus = tst_ncpus_max();
+
+	/* Current mask */
+	mask = CPU_ALLOC(ncpus);
+	if (mask == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup, "CPU_ALLOC(%ld) failed",
+			ncpus);
+	mask_size = CPU_ALLOC_SIZE(ncpus);
+	if (sched_getaffinity(0, mask_size, mask) < 0)
+		tst_brkm(TBROK | TERRNO, cleanup, "sched_getaffinity() failed");
+
+	/* Mask with one more cpu than available on the system */
+	emask = CPU_ALLOC(ncpus + 1);
+	if (emask == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup, "CPU_ALLOC(%ld) failed",
+			ncpus + 1);
+	emask_size = CPU_ALLOC_SIZE(ncpus + 1);
+	CPU_ZERO_S(emask_size, emask);
+	CPU_SET_S(ncpus, emask_size, emask);
+
+	privileged_pid = tst_fork();
+	if (privileged_pid == 0) {
+		pause();
+
+		exit(0);
+	} else if (privileged_pid < 0) {
+		tst_brkm(TBROK | TERRNO, cleanup, "fork() failed");
+	}
+
+	/* Dropping the root privileges */
+	ltpuser = getpwnam(nobody_uid);
+	if (ltpuser == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			"getpwnam failed for user id %s", nobody_uid);
+
+	SAFE_SETEUID(cleanup, ltpuser->pw_uid);
+
+	/* this pid is not used by the OS */
+	free_pid = tst_get_unused_pid(cleanup);
+}
+
+int main(int argc, char *argv[])
+{
+	const char *msg;
+	int lc;
+	int i;
+
+	msg = parse_opts(argc, argv, NULL, NULL);
+	if (msg != NULL)
+		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
+
+	setup();
+
+	for (lc = 0; TEST_LOOPING(lc); lc++) {
+		tst_count = 0;
+		for (i = 0; i < TST_TOTAL; i++) {
+			TEST(sched_setaffinity(*(test_cases[i].pid),
+						*(test_cases[i].mask_size),
+						*(test_cases[i].mask)));
+
+			if (TEST_RETURN != -1)
+				tst_resm(TFAIL,
+					"sched_setaffinity() unexpectedly succeded");
+
+			if (TEST_ERRNO == test_cases[i].exp_errno) {
+				tst_resm(TPASS, "expected failure with '%s'",
+					strerror(test_cases[i].exp_errno));
+			} else {
+				tst_resm(TFAIL,
+					"call returned '%s', expected - '%s'",
+					strerror(TEST_ERRNO),
+					strerror(test_cases[i].exp_errno));
+			}
+		}
+	}
+
+	cleanup();
+	tst_exit();
+}
--

1.7.1

Quoted 11 lines

------------------------------------------------------------------------------
Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards
http://p.sf.net/sfu/Bonitasoft
_______________________________________________
Ltp-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ltp-list

From: "Stanislav Kholmanskikh" <[email protected]>
To: "Jan Stancek" <[email protected]>
Cc: [email protected], "vasily isaenko" <[email protected]>
Sent: Tuesday, 15 July, 2014 8:53:55 AM
Subject: Re: [LTP] [PATCH V4] syscalls: implemented a test for sched_setaffinity() error values

Quoted 12 lines · Jan Stancek

----- Original Message -----

Quoted 7 lines

From: "Stanislav Kholmanskikh" <[email protected]>
To: [email protected]
Cc: "vasily isaenko" <[email protected]>
Sent: Wednesday, 2 July, 2014 9:30:58 AM
Subject: [LTP] [PATCH V4] syscalls: implemented a test for
sched_setaffinity() error values

Quoted 6 lines

Quoted 4 lines

This test verifies sched_setaffinity(2) for all error conditions to occur correctly.

Signed-off-by Stanislav Kholmanskikh <[email protected]>

Looks good to me, just a small nit: have a look at checkpatch output.

Thank you, Jan.

Do you mean this:
ERROR: Macros with multiple statements should be enclosed in a do - while loop
#208: FILE:
testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h:37:

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h new file +5 -0

+#define CPU_ALLOC(ncpus) malloc(sizeof(cpu_set_t)); \
+if (ncpus > CPU_SETSIZE) { \
+	tst_brkm(TCONF, cleanup, \
+		"Your libc does not support masks with %ld cpus", ncpus); \
+}

?

If so, I think I can't do it, because I need to assign CPU_ALLOC() to a variable....

Or what did you mean? :)

Quoted 339 lines

Reviewed-by Jan Stancek <[email protected]>

Regards,
Jan

Quoted 332 lines

---
Changes since V3:
* use tst_fork() instead of fork() for privileged_pid
* use tst_get_unused_pid() for free_pid

  runtest/syscalls                                   |    1 +
  testcases/kernel/syscalls/.gitignore               |    1 +
  .../kernel/syscalls/sched_setaffinity/Makefile     |   23 +++
  .../syscalls/sched_setaffinity/sched_setaffinity.h |   60 +++++++
  .../sched_setaffinity/sched_setaffinity01.c        |  177
  ++++++++++++++++++++
  5 files changed, 262 insertions(+), 0 deletions(-)

create mode 100644 testcases/kernel/syscalls/sched_setaffinity/Makefile create mode 100644 testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h create mode 100644 testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c

runtest/syscalls +1 -0

index 66d6a65..52556bc 100644
@@ -895,6 +895,7 @@ sched_setscheduler02 sched_setscheduler02
 
  sched_yield01 sched_yield01
 
+sched_setaffinity01 sched_setaffinity01
  sched_getaffinity01 sched_getaffinity01
 
  select01 select01

testcases/kernel/syscalls/.gitignore +1 -0

index 975c150..0c31582 100644
@@ -724,6 +724,7 @@
  /sched_rr_get_interval/sched_rr_get_interval01
  /sched_rr_get_interval/sched_rr_get_interval02
  /sched_rr_get_interval/sched_rr_get_interval03
+/sched_setaffinity/sched_setaffinity01
  /sched_setparam/sched_setparam01
  /sched_setparam/sched_setparam02
  /sched_setparam/sched_setparam03

testcases/kernel/syscalls/sched_setaffinity/Makefile new file +16 -0

new file mode 100644
index 0000000..2d825f1
@@ -0,0 +1,23 @@
+#
+#  Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+#
+#  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 St, Fifth Floor, Boston, MA  02110-1301

USA

testcases/kernel/syscalls/sched_setaffinity/Makefile new file +7 -0

+#
+
+top_srcdir		?= ../../../..
+
+include $(top_srcdir)/include/mk/testcases.mk
+
+include $(top_srcdir)/include/mk/generic_leaf_target.mk

diff --git a/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h b/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h new file mode 100644
index 0000000..8083894

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h new file +24 -0

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+ *
+ * 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 would 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 the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ * Some old libcs (like glibc < 2.7) do not provide interfaces for
+ * dynamically sized cpu sets, but provide only static cpu_set_t type
+ * with no more than CPU_SETSIZE cpus in it.
+ *
+ * This file is a wrapper of the dynamic interfaces using the static

ones.
+ *
+ * If the number of cpus available on the system is greater than
+ * CPU_SETSIZE, this interface will not work. Update libc in this case :)
+ */

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h new file +32 -0

+
+#define _GNU_SOURCE
+#include <sched.h>
+
+#ifndef LTP_SCHED_SETAFFINITY_H
+#define LTP_SCHED_SETAFFINITY_H
+
+#ifndef CPU_ALLOC
+#define CPU_ALLOC(ncpus) malloc(sizeof(cpu_set_t)); \
+if (ncpus > CPU_SETSIZE) { \
+	tst_brkm(TCONF, cleanup, \
+		"Your libc does not support masks with %ld cpus", ncpus); \
+}
+#endif
+
+#ifndef CPU_FREE
+#define CPU_FREE(ptr) free(ptr);
+#endif
+
+#ifndef CPU_ALLOC_SIZE
+#define CPU_ALLOC_SIZE(size) sizeof(cpu_set_t);
+#endif
+
+#ifndef CPU_ZERO_S
+#define CPU_ZERO_S(size, mask) CPU_ZERO(mask);
+#endif
+
+#ifndef CPU_SET_S
+#define CPU_SET_S(cpu, size, mask) CPU_SET(cpu, mask);
+#endif
+
+#endif /* LTP_SCHED_SETAFFINITY_H */

diff --git a/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c b/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c new file mode 100644
index 0000000..d1b2abe

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c new file +177 -1

@@ -0,0 +1,177 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+ *
+ * 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 would 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 the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ * This test verifies sched_setaffinity(2) for all error conditions
+ * to occur correctly.
+ *
+ * sched_setaffinity() returns -1 and sets the error code to:
+ *
+ * 1) EFAULT, if the supplied memory address is invalid
+ * 2) EINVAL, if the mask doesn't contain at least one
+ *    permitted cpu
+ * 3) ESRCH, if the process whose id is pid could not
+ *    be found
+ * 4) EPERM, if the calling process doesn't have appropriate
+ *    privileges
+ */
+
+#define _GNU_SOURCE
+#include <errno.h>
+#include <pwd.h>
+#include <sched.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include "test.h"
+#include "usctest.h"
+#include "safe_macros.h"
+#include "sched_setaffinity.h"
+
+char *TCID = "sched_setaffinity01";
+
+#define PID_MAX_PATH "/proc/sys/kernel/pid_max"
+
+static cpu_set_t *mask, *emask;
+static cpu_set_t *fmask = (void *)-1;
+static size_t mask_size, emask_size;
+static pid_t self_pid, privileged_pid, free_pid;
+static uid_t uid;
+static const char nobody_uid[] = "nobody";
+static struct passwd *ltpuser;
+static long ncpus;
+
+static struct test_case_t {
+	pid_t *pid;
+	size_t *mask_size;
+	cpu_set_t **mask;
+	int exp_errno;
+} test_cases[] = {
+	{&self_pid, &mask_size, &fmask, EFAULT},
+	{&self_pid, &emask_size, &emask, EINVAL},
+	{&free_pid, &mask_size, &mask, ESRCH},
+	{&privileged_pid, &mask_size, &mask, EPERM},
+};
+
+int TST_TOTAL = ARRAY_SIZE(test_cases);
+
+static void cleanup(void)
+{
+	if (mask != NULL) {
+		CPU_FREE(mask);
+		mask = NULL;
+	}
+
+	if (emask != NULL) {
+		CPU_FREE(emask);
+		emask = NULL;
+	}
+
+	SAFE_SETEUID(NULL, uid);
+
+	if (privileged_pid != 0) {
+		kill(privileged_pid, SIGKILL);
+		waitpid(privileged_pid, NULL, 0);
+		privileged_pid = 0;
+	}
+}
+
+static void setup(void)
+{
+	tst_require_root(NULL);
+	uid = geteuid();
+	ncpus = tst_ncpus_max();
+
+	/* Current mask */
+	mask = CPU_ALLOC(ncpus);
+	if (mask == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup, "CPU_ALLOC(%ld) failed",
+			ncpus);
+	mask_size = CPU_ALLOC_SIZE(ncpus);
+	if (sched_getaffinity(0, mask_size, mask) < 0)
+		tst_brkm(TBROK | TERRNO, cleanup, "sched_getaffinity() failed");
+
+	/* Mask with one more cpu than available on the system */
+	emask = CPU_ALLOC(ncpus + 1);
+	if (emask == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup, "CPU_ALLOC(%ld) failed",
+			ncpus + 1);
+	emask_size = CPU_ALLOC_SIZE(ncpus + 1);
+	CPU_ZERO_S(emask_size, emask);
+	CPU_SET_S(ncpus, emask_size, emask);
+
+	privileged_pid = tst_fork();
+	if (privileged_pid == 0) {
+		pause();
+
+		exit(0);
+	} else if (privileged_pid < 0) {
+		tst_brkm(TBROK | TERRNO, cleanup, "fork() failed");
+	}
+
+	/* Dropping the root privileges */
+	ltpuser = getpwnam(nobody_uid);
+	if (ltpuser == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			"getpwnam failed for user id %s", nobody_uid);
+
+	SAFE_SETEUID(cleanup, ltpuser->pw_uid);
+
+	/* this pid is not used by the OS */
+	free_pid = tst_get_unused_pid(cleanup);
+}
+
+int main(int argc, char *argv[])
+{
+	const char *msg;
+	int lc;
+	int i;
+
+	msg = parse_opts(argc, argv, NULL, NULL);
+	if (msg != NULL)
+		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
+
+	setup();
+
+	for (lc = 0; TEST_LOOPING(lc); lc++) {
+		tst_count = 0;
+		for (i = 0; i < TST_TOTAL; i++) {
+			TEST(sched_setaffinity(*(test_cases[i].pid),
+						*(test_cases[i].mask_size),
+						*(test_cases[i].mask)));
+
+			if (TEST_RETURN != -1)
+				tst_resm(TFAIL,
+					"sched_setaffinity() unexpectedly succeded");
+
+			if (TEST_ERRNO == test_cases[i].exp_errno) {
+				tst_resm(TPASS, "expected failure with '%s'",
+					strerror(test_cases[i].exp_errno));
+			} else {
+				tst_resm(TFAIL,
+					"call returned '%s', expected - '%s'",
+					strerror(TEST_ERRNO),
+					strerror(test_cases[i].exp_errno));
+			}
+		}
+	}
+
+	cleanup();
+	tst_exit();
+}
--

1.7.1

Quoted 4 lines

Quoted 4 lines

------------------------------------------------------------------------------
Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition

Quoted 8 lines

Quoted 8 lines

Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards
http://p.sf.net/sfu/Bonitasoft
_______________________________________________
Ltp-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ltp-list

----- Original Message -----

Quoted 41 lines

From: "Stanislav Kholmanskikh" <[email protected]>
To: "Jan Stancek" <[email protected]>
Cc: [email protected], "vasily isaenko" <[email protected]>
Sent: Tuesday, 15 July, 2014 8:53:55 AM
Subject: Re: [LTP] [PATCH V4] syscalls: implemented a test for sched_setaffinity() error values

Quoted 12 lines · Jan Stancek

----- Original Message -----

Quoted 7 lines

From: "Stanislav Kholmanskikh" <[email protected]>
To: [email protected]
Cc: "vasily isaenko" <[email protected]>
Sent: Wednesday, 2 July, 2014 9:30:58 AM
Subject: [LTP] [PATCH V4] syscalls: implemented a test for
sched_setaffinity() error values

Quoted 6 lines

Quoted 4 lines

This test verifies sched_setaffinity(2) for all error conditions to occur correctly.

Signed-off-by Stanislav Kholmanskikh <[email protected]>

Looks good to me, just a small nit: have a look at checkpatch output.

Thank you, Jan.

Do you mean this:
ERROR: Macros with multiple statements should be enclosed in a do - while loop
#208: FILE:
testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h:37:

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h new file +5 -0

+#define CPU_ALLOC(ncpus) malloc(sizeof(cpu_set_t)); \
+if (ncpus > CPU_SETSIZE) { \
+	tst_brkm(TCONF, cleanup, \
+		"Your libc does not support masks with %ld cpus", ncpus); \
+}

Quoted 4 lines

?

If so, I think I can't do it, because I need to assign CPU_ALLOC() to a variable....

I see.

Quoted 1 line

Quoted 1 line

Or what did you mean? :)

I thought that at least those "trailing semicolon" warnings and removing FSF address could be easily fixed.

Regards,
Jan

Quoted 352 lines

Quoted 351 lines

Reviewed-by Jan Stancek <[email protected]>

Regards,
Jan

Quoted 344 lines

---
Changes since V3:
* use tst_fork() instead of fork() for privileged_pid
* use tst_get_unused_pid() for free_pid

   runtest/syscalls                                   |    1 +
   testcases/kernel/syscalls/.gitignore               |    1 +
   .../kernel/syscalls/sched_setaffinity/Makefile     |   23 +++
   .../syscalls/sched_setaffinity/sched_setaffinity.h |   60 +++++++
   .../sched_setaffinity/sched_setaffinity01.c        |  177
   ++++++++++++++++++++
   5 files changed, 262 insertions(+), 0 deletions(-)

create mode 100644 testcases/kernel/syscalls/sched_setaffinity/Makefile create mode 100644 testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h create mode 100644 testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c

runtest/syscalls +1 -0

index 66d6a65..52556bc 100644
@@ -895,6 +895,7 @@ sched_setscheduler02 sched_setscheduler02
 
   sched_yield01 sched_yield01
 
+sched_setaffinity01 sched_setaffinity01
   sched_getaffinity01 sched_getaffinity01
 
   select01 select01

testcases/kernel/syscalls/.gitignore +1 -0

index 975c150..0c31582 100644
@@ -724,6 +724,7 @@
   /sched_rr_get_interval/sched_rr_get_interval01
   /sched_rr_get_interval/sched_rr_get_interval02
   /sched_rr_get_interval/sched_rr_get_interval03
+/sched_setaffinity/sched_setaffinity01
   /sched_setparam/sched_setparam01
   /sched_setparam/sched_setparam02
   /sched_setparam/sched_setparam03

testcases/kernel/syscalls/sched_setaffinity/Makefile new file +16 -0

new file mode 100644
index 0000000..2d825f1
@@ -0,0 +1,23 @@
+#
+#  Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+#
+#  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 St, Fifth Floor, Boston, MA  02110-1301

USA

testcases/kernel/syscalls/sched_setaffinity/Makefile new file +7 -0

+#
+
+top_srcdir		?= ../../../..
+
+include $(top_srcdir)/include/mk/testcases.mk
+
+include $(top_srcdir)/include/mk/generic_leaf_target.mk

diff --git a/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h b/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h new file mode 100644
index 0000000..8083894

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h new file +24 -0

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+ *
+ * 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 would 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 the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ * Some old libcs (like glibc < 2.7) do not provide interfaces for
+ * dynamically sized cpu sets, but provide only static cpu_set_t type
+ * with no more than CPU_SETSIZE cpus in it.
+ *
+ * This file is a wrapper of the dynamic interfaces using the static

ones.
+ *
+ * If the number of cpus available on the system is greater than
+ * CPU_SETSIZE, this interface will not work. Update libc in this case :)
+ */

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity.h new file +32 -0

+
+#define _GNU_SOURCE
+#include <sched.h>
+
+#ifndef LTP_SCHED_SETAFFINITY_H
+#define LTP_SCHED_SETAFFINITY_H
+
+#ifndef CPU_ALLOC
+#define CPU_ALLOC(ncpus) malloc(sizeof(cpu_set_t)); \
+if (ncpus > CPU_SETSIZE) { \
+	tst_brkm(TCONF, cleanup, \
+		"Your libc does not support masks with %ld cpus", ncpus); \
+}
+#endif
+
+#ifndef CPU_FREE
+#define CPU_FREE(ptr) free(ptr);
+#endif
+
+#ifndef CPU_ALLOC_SIZE
+#define CPU_ALLOC_SIZE(size) sizeof(cpu_set_t);
+#endif
+
+#ifndef CPU_ZERO_S
+#define CPU_ZERO_S(size, mask) CPU_ZERO(mask);
+#endif
+
+#ifndef CPU_SET_S
+#define CPU_SET_S(cpu, size, mask) CPU_SET(cpu, mask);
+#endif
+
+#endif /* LTP_SCHED_SETAFFINITY_H */

diff --git a/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c b/testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c new file mode 100644
index 0000000..d1b2abe

testcases/kernel/syscalls/sched_setaffinity/sched_setaffinity01.c new file +177 -1

@@ -0,0 +1,177 @@
+/*
+ * Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
+ *
+ * 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 would 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 the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ * This test verifies sched_setaffinity(2) for all error conditions
+ * to occur correctly.
+ *
+ * sched_setaffinity() returns -1 and sets the error code to:
+ *
+ * 1) EFAULT, if the supplied memory address is invalid
+ * 2) EINVAL, if the mask doesn't contain at least one
+ *    permitted cpu
+ * 3) ESRCH, if the process whose id is pid could not
+ *    be found
+ * 4) EPERM, if the calling process doesn't have appropriate
+ *    privileges
+ */
+
+#define _GNU_SOURCE
+#include <errno.h>
+#include <pwd.h>
+#include <sched.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include "test.h"
+#include "usctest.h"
+#include "safe_macros.h"
+#include "sched_setaffinity.h"
+
+char *TCID = "sched_setaffinity01";
+
+#define PID_MAX_PATH "/proc/sys/kernel/pid_max"
+
+static cpu_set_t *mask, *emask;
+static cpu_set_t *fmask = (void *)-1;
+static size_t mask_size, emask_size;
+static pid_t self_pid, privileged_pid, free_pid;
+static uid_t uid;
+static const char nobody_uid[] = "nobody";
+static struct passwd *ltpuser;
+static long ncpus;
+
+static struct test_case_t {
+	pid_t *pid;
+	size_t *mask_size;
+	cpu_set_t **mask;
+	int exp_errno;
+} test_cases[] = {
+	{&self_pid, &mask_size, &fmask, EFAULT},
+	{&self_pid, &emask_size, &emask, EINVAL},
+	{&free_pid, &mask_size, &mask, ESRCH},
+	{&privileged_pid, &mask_size, &mask, EPERM},
+};
+
+int TST_TOTAL = ARRAY_SIZE(test_cases);
+
+static void cleanup(void)
+{
+	if (mask != NULL) {
+		CPU_FREE(mask);
+		mask = NULL;
+	}
+
+	if (emask != NULL) {
+		CPU_FREE(emask);
+		emask = NULL;
+	}
+
+	SAFE_SETEUID(NULL, uid);
+
+	if (privileged_pid != 0) {
+		kill(privileged_pid, SIGKILL);
+		waitpid(privileged_pid, NULL, 0);
+		privileged_pid = 0;
+	}
+}
+
+static void setup(void)
+{
+	tst_require_root(NULL);
+	uid = geteuid();
+	ncpus = tst_ncpus_max();
+
+	/* Current mask */
+	mask = CPU_ALLOC(ncpus);
+	if (mask == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup, "CPU_ALLOC(%ld) failed",
+			ncpus);
+	mask_size = CPU_ALLOC_SIZE(ncpus);
+	if (sched_getaffinity(0, mask_size, mask) < 0)
+		tst_brkm(TBROK | TERRNO, cleanup, "sched_getaffinity() failed");
+
+	/* Mask with one more cpu than available on the system */
+	emask = CPU_ALLOC(ncpus + 1);
+	if (emask == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup, "CPU_ALLOC(%ld) failed",
+			ncpus + 1);
+	emask_size = CPU_ALLOC_SIZE(ncpus + 1);
+	CPU_ZERO_S(emask_size, emask);
+	CPU_SET_S(ncpus, emask_size, emask);
+
+	privileged_pid = tst_fork();
+	if (privileged_pid == 0) {
+		pause();
+
+		exit(0);
+	} else if (privileged_pid < 0) {
+		tst_brkm(TBROK | TERRNO, cleanup, "fork() failed");
+	}
+
+	/* Dropping the root privileges */
+	ltpuser = getpwnam(nobody_uid);
+	if (ltpuser == NULL)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			"getpwnam failed for user id %s", nobody_uid);
+
+	SAFE_SETEUID(cleanup, ltpuser->pw_uid);
+
+	/* this pid is not used by the OS */
+	free_pid = tst_get_unused_pid(cleanup);
+}
+
+int main(int argc, char *argv[])
+{
+	const char *msg;
+	int lc;
+	int i;
+
+	msg = parse_opts(argc, argv, NULL, NULL);
+	if (msg != NULL)
+		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
+
+	setup();
+
+	for (lc = 0; TEST_LOOPING(lc); lc++) {
+		tst_count = 0;
+		for (i = 0; i < TST_TOTAL; i++) {
+			TEST(sched_setaffinity(*(test_cases[i].pid),
+						*(test_cases[i].mask_size),
+						*(test_cases[i].mask)));
+
+			if (TEST_RETURN != -1)
+				tst_resm(TFAIL,
+					"sched_setaffinity() unexpectedly succeded");
+
+			if (TEST_ERRNO == test_cases[i].exp_errno) {
+				tst_resm(TPASS, "expected failure with '%s'",
+					strerror(test_cases[i].exp_errno));
+			} else {
+				tst_resm(TFAIL,
+					"call returned '%s', expected - '%s'",
+					strerror(TEST_ERRNO),
+					strerror(test_cases[i].exp_errno));
+			}
+		}
+	}
+
+	cleanup();
+	tst_exit();
+}
--

1.7.1

------------------------------------------------------------------------------
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