From: anders.roxell@linaro.org (Anders Roxell)
Subject: [PATCH 1/2] selftests/filesystems: devpts_pts included wrong header
Date: Wed, 18 Apr 2018 09:52:55 +0200 [thread overview]
Message-ID: <20180418075256.300-1-anders.roxell@linaro.org> (raw)
Message-ID: <20180418075255.CJv3oWC1JsRRlnwxJZoV-BJ21LuuVhKko2sJdT88w90@z> (raw)
We were picking up the wrong header should use asm/ioctls.h form the kernel
and not the header from the system (sys/ioctl.h). In the current code we
added the correct include and we added the kernel headers path to the CFLAGS.
Fixes: ce290a19609d ("selftests: add devpts selftests")
Signed-off-by: Anders Roxell <anders.roxell at linaro.org>
---
Hi,
I've been running devpts_pts on a mainline kernel (4.16+git0+60cc43fc88) and
the verify_invalid_ptmx_bind_mount() test failes with this failure:
root at intel-core2-32:~# ./devpts_pts
Failed to perform TIOCGPTPEER ioctl
However, I'm still confused why I'm not able to get the test to pass. Strace
showes that -ENOENT return in the TIOCGPTPEER implementation in the
kernel. I think the -ENOENT gets returned from this path
devpts_mntget()->devpts_ptmx_path->path_pts().
See the strace issue below:
root at intel-core2-32:~# strace ./devpts_pts
execve("./devpts_pts", ["./devpts_pts"], [/* 17 vars */]) = 0
brk(NULL) = 0x5634e0092000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f459d338000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=16726, ...}) = 0
mmap(NULL, 16726, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f459d333000
close(3) = 0
open("/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260\3\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1681056, ...}) = 0
mmap(NULL, 3787168, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f459cd7b000
mprotect(0x7f459cf0f000, 2093056, PROT_NONE) = 0
mmap(0x7f459d10e000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x193000) = 0x7f459d10e000
mmap(0x7f459d114000, 14752, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f459d114000
close(3) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f459d331000
arch_prctl(ARCH_SET_FS, 0x7f459d331700) = 0
mprotect(0x7f459d10e000, 16384, PROT_READ) = 0
mprotect(0x5634debe3000, 4096, PROT_READ) = 0
mprotect(0x7f459d33a000, 4096, PROT_READ) = 0
munmap(0x7f459d333000, 16726) = 0
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
unshare(CLONE_NEWNS) = 0
mount("", "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
mount("/dev/pts/ptmx", "/dev/ptmx", NULL, MS_BIND, NULL) = 0
open("/dev/ptmx", O_RDWR|O_NOCTTY|O_CLOEXEC) = 3
ioctl(3, TIOCSPTLCK, [0]) = 0
ioctl(3, _IOC(0, 0x54, 0x41, 0x00), 0x80102) = 4
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f459d3319d0) = 4377
wait4(4377, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 4377
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4377, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
close(3) = 0
close(4) = 0
getpid() = 4376
open("/tmp/devpts_ptmx_Z6aEvy", O_RDWR|O_CREAT|O_EXCL, 0600) = 3
mount("/dev/pts/ptmx", "/tmp/devpts_ptmx_Z6aEvy", NULL, MS_BIND, NULL) = 0
close(3) = 0
open("/tmp/devpts_ptmx_Z6aEvy", O_RDWR|O_NOCTTY|O_CLOEXEC) = 3
ioctl(3, TIOCSPTLCK, [0]) = 0
ioctl(3, _IOC(0, 0x54, 0x41, 0x00), 0x80102) = -1 ENOENT (No such file or directory)
write(2, "Failed to perform TIOCGPTPEER io"..., 36Failed to perform TIOCGPTPEER ioctl
) = 36
close(3) = 0
umount2("/dev/pts", 0) = 0
umount2("/dev/ptmx", 0) = 0
mkdir("/tmp/devpts_fs_w22bR6", 0700) = 0
mount("devpts", "/tmp/devpts_fs_w22bR6", "devpts", MS_NOSUID|MS_NOEXEC, "newinstance,ptmxmode=0666,mode=0"...) = 0
open("/tmp/devpts_fs_w22bR6/ptmx", O_RDWR|O_NOCTTY|O_CLOEXEC) = 3
ioctl(3, TIOCSPTLCK, [0]) = 0
ioctl(3, _IOC(0, 0x54, 0x41, 0x00), 0x80102) = 4
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f459d3319d0) = 4378
wait4(4378, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 4378
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4378, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
close(3) = 0
close(4) = 0
unlink("/tmp/devpts_fs_w22bR6") = -1 EISDIR (Is a directory)
exit_group(0) = ?
+++ exited with 0 +++
root at intel-core2-32:~#
tools/testing/selftests/filesystems/Makefile | 1 +
tools/testing/selftests/filesystems/devpts_pts.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/filesystems/Makefile b/tools/testing/selftests/filesystems/Makefile
index 4e6d09fb166f..427a401aae5c 100644
--- a/tools/testing/selftests/filesystems/Makefile
+++ b/tools/testing/selftests/filesystems/Makefile
@@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
TEST_PROGS := dnotify_test devpts_pts
+CFLAGS += -I../../../../usr/include/
all: $(TEST_PROGS)
include ../lib.mk
diff --git a/tools/testing/selftests/filesystems/devpts_pts.c b/tools/testing/selftests/filesystems/devpts_pts.c
index b9055e974289..79420b9d00c7 100644
--- a/tools/testing/selftests/filesystems/devpts_pts.c
+++ b/tools/testing/selftests/filesystems/devpts_pts.c
@@ -8,7 +8,7 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
-#include <sys/ioctl.h>
+#include <asm/ioctls.h>
#include <sys/mount.h>
#include <sys/wait.h>
--
2.11.0
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next reply other threads:[~2018-04-18 7:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-18 7:52 anders.roxell [this message]
2018-04-18 7:52 ` [PATCH 1/2] selftests/filesystems: devpts_pts included wrong header Anders Roxell
2018-04-18 7:52 ` [PATCH 2/2] selftests/filesystems: remove Makefile warning anders.roxell
2018-04-18 7:52 ` Anders Roxell
2018-04-18 14:54 ` shuah
2018-04-18 14:54 ` Shuah Khan
2018-04-18 20:32 ` anders.roxell
2018-04-18 20:32 ` Anders Roxell
2018-04-19 8:22 ` anders.roxell
2018-04-19 8:22 ` Anders Roxell
2018-04-19 8:56 ` anders.roxell
2018-04-19 8:56 ` Anders Roxell
2018-05-02 14:05 ` [PATCH 1/2] selftests/filesystems: devpts_pts included wrong header christian.brauner
2018-05-02 14:05 ` Christian Brauner
2018-05-04 19:42 ` shuah
2018-05-04 19:42 ` Shuah Khan
2018-05-10 17:26 ` shuah
2018-05-10 17:26 ` Shuah Khan
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