[LTP] [PATCH 4/5] syscalls: shmctl: Add new test to verify the _time_high fields
Viresh Kumar
viresh.kumar@linaro.org
Thu May 21 12:47:35 CEST 2020
The _time_high fields must be reset by the kernel, add a test to verify
that.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
configure.ac | 1 +
include/shmbuf.h | 273 ++++++++++++++++++
runtest/syscalls | 1 +
runtest/syscalls-ipc | 1 +
.../kernel/syscalls/ipc/shmctl/.gitignore | 1 +
testcases/kernel/syscalls/ipc/shmctl/Makefile | 7 +-
.../kernel/syscalls/ipc/shmctl/shmctl06.c | 51 ++++
7 files changed, 333 insertions(+), 2 deletions(-)
create mode 100644 include/shmbuf.h
create mode 100644 testcases/kernel/syscalls/ipc/shmctl/shmctl06.c
diff --git a/configure.ac b/configure.ac
index c513fdf440c2..f1ee98b23cbe 100644
--- a/configure.ac
+++ b/configure.ac
@@ -152,6 +152,7 @@ AC_CHECK_TYPES([struct if_nextdqblk],,,[#include <linux/quota.h>])
AC_CHECK_TYPES([struct iovec],,,[#include <sys/uio.h>])
AC_CHECK_TYPES([struct ipc64_perm],,,[#include <sys/ipcbuf.h>])
AC_CHECK_TYPES([struct semid64_ds],,,[#include <sys/sem.h>])
+AC_CHECK_TYPES([struct shmid64_ds],,,[#include <sys/shmbuf.h>])
AC_CHECK_TYPES([struct mmsghdr],,,[
#define _GNU_SOURCE
diff --git a/include/shmbuf.h b/include/shmbuf.h
new file mode 100644
index 000000000000..f8c1294c60d6
--- /dev/null
+++ b/include/shmbuf.h
@@ -0,0 +1,273 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2020 Linaro Limited. All rights reserved.
+ * Author: Viresh Kumar <viresh.kumar@linaro.org>
+ */
+
+#ifndef IPC_SHMBUF_H
+#define IPC_SHMBUF_H
+
+#include <linux/posix_types.h>
+#include <sys/sem.h>
+#include "tst_timer.h"
+#include "ipcbuf.h"
+
+#ifndef HAVE_SHMID64_DS
+
+#if defined(__mips__)
+#define HAVE_SHMID64_DS
+/*
+ * The shmid64_ds structure for the MIPS architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * As MIPS was lacking proper padding after shm_?time, we use 48 bits
+ * of the padding at the end to store a few additional bits of the time.
+ * libc implementations need to take care to convert this into a proper
+ * data structure when moving to 64-bit time_t.
+ */
+
+#if defined(__arch64__)
+struct shmid64_ds {
+ struct ipc64_perm shm_perm; /* operation perms */
+ size_t shm_segsz; /* size of segment (bytes) */
+ long shm_atime; /* last attach time */
+ long shm_dtime; /* last detach time */
+ long shm_ctime; /* last change time */
+ __kernel_pid_t shm_cpid; /* pid of creator */
+ __kernel_pid_t shm_lpid; /* pid of last operator */
+ unsigned long shm_nattch; /* no. of current attaches */
+ unsigned long __unused1;
+ unsigned long __unused2;
+};
+#else
+#define HAVE_SHMID64_DS_TIME_HIGH
+struct shmid64_ds {
+ struct ipc64_perm shm_perm; /* operation perms */
+ size_t shm_segsz; /* size of segment (bytes) */
+ unsigned long shm_atime; /* last attach time */
+ unsigned long shm_dtime; /* last detach time */
+ unsigned long shm_ctime; /* last change time */
+ __kernel_pid_t shm_cpid; /* pid of creator */
+ __kernel_pid_t shm_lpid; /* pid of last operator */
+ unsigned long shm_nattch; /* no. of current attaches */
+ unsigned short shm_atime_high;
+ unsigned short shm_dtime_high;
+ unsigned short shm_ctime_high;
+ unsigned short __unused1;
+};
+#endif
+
+#endif /* __mips__ */
+
+#if defined(__hppa__)
+#define HAVE_SHMID64_DS
+/*
+ * The shmid64_ds structure for parisc architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct shmid64_ds {
+ struct ipc64_perm shm_perm; /* operation perms */
+#if __BITS_PER_LONG == 64
+ long shm_atime; /* last attach time */
+ long shm_dtime; /* last detach time */
+ long shm_ctime; /* last change time */
+#else
+#define HAVE_SHMID64_DS_TIME_HIGH
+ unsigned long shm_atime_high;
+ unsigned long shm_atime; /* last attach time */
+ unsigned long shm_dtime_high;
+ unsigned long shm_dtime; /* last detach time */
+ unsigned long shm_ctime_high;
+ unsigned long shm_ctime; /* last change time */
+ unsigned int __pad4;
+#endif
+ __kernel_size_t shm_segsz; /* size of segment (bytes) */
+ __kernel_pid_t shm_cpid; /* pid of creator */
+ __kernel_pid_t shm_lpid; /* pid of last operator */
+ unsigned long shm_nattch; /* no. of current attaches */
+ unsigned long __unused1;
+ unsigned long __unused2;
+};
+#endif /* __hppa__ */
+
+#if defined(__powerpc__) || defined(__powerpc64__)
+#define HAVE_SHMID64_DS
+/*
+ * The shmid64_ds structure for PPC architecture.
+ *
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct shmid64_ds {
+ struct ipc64_perm shm_perm; /* operation perms */
+#ifdef __powerpc64__
+ long shm_atime; /* last attach time */
+ long shm_dtime; /* last detach time */
+ long shm_ctime; /* last change time */
+#else
+#define HAVE_SHMID64_DS_TIME_HIGH
+ unsigned long shm_atime_high;
+ unsigned long shm_atime; /* last attach time */
+ unsigned long shm_dtime_high;
+ unsigned long shm_dtime; /* last detach time */
+ unsigned long shm_ctime_high;
+ unsigned long shm_ctime; /* last change time */
+ unsigned long __unused4;
+#endif
+ size_t shm_segsz; /* size of segment (bytes) */
+ __kernel_pid_t shm_cpid; /* pid of creator */
+ __kernel_pid_t shm_lpid; /* pid of last operator */
+ unsigned long shm_nattch; /* no. of current attaches */
+ unsigned long __unused5;
+ unsigned long __unused6;
+};
+
+#endif /* defined(__powerpc__) || defined(__powerpc64__) */
+
+#if defined(__sparc__)
+#define HAVE_SHMID64_DS
+/*
+ * The shmid64_ds structure for sparc architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct shmid64_ds {
+ struct ipc64_perm shm_perm; /* operation perms */
+#if defined(__arch64__)
+ long shm_atime; /* last attach time */
+ long shm_dtime; /* last detach time */
+ long shm_ctime; /* last change time */
+#else
+#define HAVE_SHMID64_DS_TIME_HIGH
+ unsigned long shm_atime_high;
+ unsigned long shm_atime; /* last attach time */
+ unsigned long shm_dtime_high;
+ unsigned long shm_dtime; /* last detach time */
+ unsigned long shm_ctime_high;
+ unsigned long shm_ctime; /* last change time */
+#endif
+ size_t shm_segsz; /* size of segment (bytes) */
+ __kernel_pid_t shm_cpid; /* pid of creator */
+ __kernel_pid_t shm_lpid; /* pid of last operator */
+ unsigned long shm_nattch; /* no. of current attaches */
+ unsigned long __unused1;
+ unsigned long __unused2;
+};
+
+#endif /* __sparc__ */
+
+#if defined(__x86_64__) && defined(__ILP32__)
+#define HAVE_SHMID64_DS
+/*
+ * The shmid64_ds structure for x86 architecture with x32 ABI.
+ *
+ * On x86-32 and x86-64 we can just use the generic definition, but
+ * x32 uses the same binary layout as x86_64, which is differnet
+ * from other 32-bit architectures.
+ */
+
+struct shmid64_ds {
+ struct ipc64_perm shm_perm; /* operation perms */
+ size_t shm_segsz; /* size of segment (bytes) */
+ __kernel_long_t shm_atime; /* last attach time */
+ __kernel_long_t shm_dtime; /* last detach time */
+ __kernel_long_t shm_ctime; /* last change time */
+ __kernel_pid_t shm_cpid; /* pid of creator */
+ __kernel_pid_t shm_lpid; /* pid of last operator */
+ __kernel_ulong_t shm_nattch; /* no. of current attaches */
+ __kernel_ulong_t __unused4;
+ __kernel_ulong_t __unused5;
+};
+#endif /* defined(__x86_64__) && defined(__ILP32__) */
+
+#if defined(__xtensa__)
+#define HAVE_SHMID64_DS
+#define HAVE_SHMID64_DS_TIME_HIGH
+/*
+ * The shmid64_ds structure for Xtensa architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space, but the padding is on the wrong
+ * side for big-endian xtensa, for historic reasons.
+ *
+ * Pad space is left for:
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct shmid64_ds {
+ struct ipc64_perm shm_perm; /* operation perms */
+ size_t shm_segsz; /* size of segment (bytes) */
+ unsigned long shm_atime; /* last attach time */
+ unsigned long shm_atime_high;
+ unsigned long shm_dtime; /* last detach time */
+ unsigned long shm_dtime_high;
+ unsigned long shm_ctime; /* last change time */
+ unsigned long shm_ctime_high;
+ __kernel_pid_t shm_cpid; /* pid of creator */
+ __kernel_pid_t shm_lpid; /* pid of last operator */
+ unsigned long shm_nattch; /* no. of current attaches */
+ unsigned long __unused4;
+ unsigned long __unused5;
+};
+
+#endif /* __xtensa__ */
+
+#ifndef HAVE_SHMID64_DS
+/*
+ * The shmid64_ds structure for most architectures (though it came
+ * from x86_32 originally). Note extra padding because this structure
+ * is passed back and forth between kernel and user space.
+ *
+ * shmid64_ds was originally meant to be architecture specific, but
+ * everyone just ended up making identical copies without specific
+ * optimizations, so we may just as well all use the same one.
+ *
+ * 64 bit architectures use a 64-bit long time field here, while
+ * 32 bit architectures have a pair of unsigned long values.
+ * On big-endian systems, the lower half is in the wrong place.
+ *
+ *
+ * Pad space is left for:
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct shmid64_ds {
+ struct ipc64_perm shm_perm; /* operation perms */
+ size_t shm_segsz; /* size of segment (bytes) */
+#if __BITS_PER_LONG == 64
+ long shm_atime; /* last attach time */
+ long shm_dtime; /* last detach time */
+ long shm_ctime; /* last change time */
+#else
+#define HAVE_SHMID64_DS_TIME_HIGH
+ unsigned long shm_atime; /* last attach time */
+ unsigned long shm_atime_high;
+ unsigned long shm_dtime; /* last detach time */
+ unsigned long shm_dtime_high;
+ unsigned long shm_ctime; /* last change time */
+ unsigned long shm_ctime_high;
+#endif
+ __kernel_pid_t shm_cpid; /* pid of creator */
+ __kernel_pid_t shm_lpid; /* pid of last operator */
+ unsigned long shm_nattch; /* no. of current attaches */
+ unsigned long __unused4;
+ unsigned long __unused5;
+};
+#endif /* shmid64_ds */
+
+#endif /* HAVE_SHMID64_DS */
+
+#endif /* IPC_SHMBUF_H */
diff --git a/runtest/syscalls b/runtest/syscalls
index db14ba4baf9e..297b225448b8 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -1352,6 +1352,7 @@ shmctl02 shmctl02
shmctl03 shmctl03
shmctl04 shmctl04
shmctl05 shmctl05
+shmctl06 shmctl06
shmdt01 shmdt01
shmdt02 shmdt02
diff --git a/runtest/syscalls-ipc b/runtest/syscalls-ipc
index f912cb067f74..5ba3b1449a6c 100644
--- a/runtest/syscalls-ipc
+++ b/runtest/syscalls-ipc
@@ -55,6 +55,7 @@ shmctl02 shmctl02
shmctl03 shmctl03
shmctl04 shmctl04
shmctl05 shmctl05
+shmctl06 shmctl06
shmdt01 shmdt01
shmdt02 shmdt02
diff --git a/testcases/kernel/syscalls/ipc/shmctl/.gitignore b/testcases/kernel/syscalls/ipc/shmctl/.gitignore
index d6777e3b8f1b..46b107344cf4 100644
--- a/testcases/kernel/syscalls/ipc/shmctl/.gitignore
+++ b/testcases/kernel/syscalls/ipc/shmctl/.gitignore
@@ -3,3 +3,4 @@
/shmctl03
/shmctl04
/shmctl05
+/shmctl06
diff --git a/testcases/kernel/syscalls/ipc/shmctl/Makefile b/testcases/kernel/syscalls/ipc/shmctl/Makefile
index dda6d636f755..44e38d8fa760 100644
--- a/testcases/kernel/syscalls/ipc/shmctl/Makefile
+++ b/testcases/kernel/syscalls/ipc/shmctl/Makefile
@@ -3,12 +3,15 @@
top_srcdir ?= ../../../../..
+include $(top_srcdir)/include/mk/testcases.mk
+
shmctl05: CFLAGS += -pthread
shmctl05: LDLIBS += -lrt
-include $(top_srcdir)/include/mk/testcases.mk
+shmctl01 shmctl02 shmctl03 shmctl04 shmctl05: LDLIBS += -lltpipc
+shmctl06: LDLIBS += -lltpnewipc
-LDLIBS += -lltpipc
LDFLAGS += -L$(top_builddir)/libs/libltpipc
+LDFLAGS += -L$(top_builddir)/libs/libltpnewipc
include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/kernel/syscalls/ipc/shmctl/shmctl06.c b/testcases/kernel/syscalls/ipc/shmctl/shmctl06.c
new file mode 100644
index 000000000000..342c5ee3504c
--- /dev/null
+++ b/testcases/kernel/syscalls/ipc/shmctl/shmctl06.c
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2020 Viresh Kumar <viresh.kumar@linaro.org>
+ *
+ * Description:
+ * Cross verify the _high fields being set to 0 by the kernel.
+ */
+#include <sys/shm.h>
+#include "libnewipc.h"
+#include "shmbuf.h"
+#include "tst_test.h"
+#include "tst_safe_sysv_ipc.h"
+
+#ifdef HAVE_SHMID64_DS_TIME_HIGH
+
+static void run(void)
+{
+ struct shmid64_ds buf_ds = {
+ .shm_atime_high = 0x0A0A,
+ .shm_dtime_high = 0x0A0A,
+ .shm_ctime_high = 0x0A0A,
+ };
+ int shmid;
+ key_t key;
+
+ /* get an IPC resource key */
+ key = GETIPCKEY();
+
+ shmid = shmget(key, SHM_SIZE, IPC_CREAT | IPC_EXCL | SHM_RW);
+ if (shmid == -1)
+ tst_brk(TBROK | TERRNO, "couldn't create shared memory segment");
+
+ TEST(shmctl(shmid, IPC_STAT, (struct shmid_ds *)&buf_ds));
+ if (TST_RET == -1)
+ tst_brk(TFAIL | TTERRNO, "shmctl() failed");
+
+ if (buf_ds.shm_atime_high || buf_ds.shm_dtime_high || buf_ds.shm_ctime_high)
+ tst_res(TFAIL, "time_high fields aren't cleared by the kernel");
+ else
+ tst_res(TPASS, "time_high fields cleared by the kernel");
+
+ SAFE_SHMCTL(shmid, IPC_RMID, NULL);
+}
+
+static struct tst_test test = {
+ .test_all = run,
+ .needs_tmpdir = 1,
+};
+#else
+TST_TEST_TCONF("test requires struct shmid64_ds to have the time_high fields");
+#endif
--
2.25.0.rc1.19.g042ed3e048af
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