strace/tests/memfd_create.c

103 lines
3.2 KiB
C
Raw Normal View History

/*
* Check decoding of memfd_create syscall.
*
* Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "tests.h"
Use <asm/unistd.h> instead of <sys/syscall.h> There are no users of SYS_* macros provided by <sys/syscall.h>, and definitions of __NR_* macros could be obtained directly from <asm/unistd.h>. * defs.h: Include <asm/unistd.h> instead of <sys/syscall.h>. * test/seccomp.c: Likewise. * test/threaded_execve.c: Likewise. * test/x32_lseek.c: Likewise. * test/x32_mmap.c: Likewise. * tests/_newselect.c: Likewise. * tests/access.c: Likewise. * tests/acct.c: Likewise. * tests/aio.c: Likewise. * tests/alarm.c: Likewise. * tests/attach-f-p.c: Likewise. * tests/bpf.c: Likewise. * tests/brk.c: Likewise. * tests/chmod.c: Likewise. * tests/chown.c: Likewise. * tests/chown32.c: Likewise. * tests/chroot.c: Likewise. * tests/clock_adjtime.c: Likewise. * tests/clock_nanosleep.c: Likewise. * tests/clock_xettime.c: Likewise. * tests/copy_file_range.c: Likewise. * tests/creat.c: Likewise. * tests/dup2.c: Likewise. * tests/dup3.c: Likewise. * tests/epoll_create.c: Likewise. * tests/epoll_create1.c: Likewise. * tests/epoll_ctl.c: Likewise. * tests/epoll_pwait.c: Likewise. * tests/epoll_wait.c: Likewise. * tests/eventfd.c: Likewise. * tests/execveat.c: Likewise. * tests/faccessat.c: Likewise. * tests/fchdir.c: Likewise. * tests/fchmod.c: Likewise. * tests/fchmodat.c: Likewise. * tests/fchown.c: Likewise. * tests/fchown32.c: Likewise. * tests/fchownat.c: Likewise. * tests/fcntl.c: Likewise. * tests/fcntl64.c: Likewise. * tests/fdatasync.c: Likewise. * tests/flock.c: Likewise. * tests/fstat.c: Likewise. * tests/fstat64.c: Likewise. * tests/fstatat64.c: Likewise. * tests/fstatfs.c: Likewise. * tests/fstatfs64.c: Likewise. * tests/fsync.c: Likewise. * tests/ftruncate.c: Likewise. * tests/ftruncate64.c: Likewise. * tests/futimesat.c: Likewise. * tests/get_mempolicy.c: Likewise. * tests/getcwd.c: Likewise. * tests/getdents.c: Likewise. * tests/getdents64.c: Likewise. * tests/getegid.c: Likewise. * tests/getegid32.c: Likewise. * tests/geteuid.c: Likewise. * tests/geteuid32.c: Likewise. * tests/getgid.c: Likewise. * tests/getgid32.c: Likewise. * tests/getgroups.c: Likewise. * tests/getgroups32.c: Likewise. * tests/getpgrp.c: Likewise. * tests/getrandom.c: Likewise. * tests/getresgid.c: Likewise. * tests/getresgid32.c: Likewise. * tests/getresuid.c: Likewise. * tests/getresuid32.c: Likewise. * tests/getrlimit.c: Likewise. * tests/getrusage.c: Likewise. * tests/getuid.c: Likewise. * tests/getuid32.c: Likewise. * tests/getxxid.c: Likewise. * tests/ioctl_uffdio.c: Likewise. * tests/ioperm.c: Likewise. * tests/iopl.c: Likewise. * tests/ipc.c: Likewise. * tests/kill.c: Likewise. * tests/lchown.c: Likewise. * tests/lchown32.c: Likewise. * tests/libmmsg.c: Likewise. * tests/libsocketcall.c: Likewise. * tests/link.c: Likewise. * tests/linkat.c: Likewise. * tests/llseek.c: Likewise. * tests/lseek.c: Likewise. * tests/lstat.c: Likewise. * tests/lstat64.c: Likewise. * tests/mbind.c: Likewise. * tests/membarrier.c: Likewise. * tests/memfd_create.c: Likewise. * tests/migrate_pages.c: Likewise. * tests/mkdir.c: Likewise. * tests/mkdirat.c: Likewise. * tests/mknod.c: Likewise. * tests/mknodat.c: Likewise. * tests/mlock.c: Likewise. * tests/mlock2.c: Likewise. * tests/move_pages.c: Likewise. * tests/newfstatat.c: Likewise. * tests/nsyscalls.c: Likewise. * tests/old_mmap.c: Likewise. * tests/oldselect.c: Likewise. * tests/open.c: Likewise. * tests/openat.c: Likewise. * tests/pause.c: Likewise. * tests/poll.c: Likewise. * tests/prctl-seccomp-filter-v.c: Likewise. * tests/prctl-seccomp-strict.c: Likewise. * tests/preadv2-pwritev2.c: Likewise. * tests/prlimit64.c: Likewise. * tests/pselect6.c: Likewise. * tests/ptrace.c: Likewise. * tests/readdir.c: Likewise. * tests/readlink.c: Likewise. * tests/readlinkat.c: Likewise. * tests/reboot.c: Likewise. * tests/remap_file_pages.c: Likewise. * tests/rename.c: Likewise. * tests/renameat.c: Likewise. * tests/renameat2.c: Likewise. * tests/rmdir.c: Likewise. * tests/rt_sigpending.c: Likewise. * tests/rt_sigprocmask.c: Likewise. * tests/rt_sigsuspend.c: Likewise. * tests/rt_sigtimedwait.c: Likewise. * tests/rt_tgsigqueueinfo.c: Likewise. * tests/sched_get_priority_mxx.c: Likewise. * tests/sched_rr_get_interval.c: Likewise. * tests/sched_xetaffinity.c: Likewise. * tests/sched_xetattr.c: Likewise. * tests/sched_xetparam.c: Likewise. * tests/sched_xetscheduler.c: Likewise. * tests/sched_yield.c: Likewise. * tests/seccomp-filter-v.c: Likewise. * tests/seccomp-filter.c: Likewise. * tests/seccomp-strict.c: Likewise. * tests/select.c: Likewise. * tests/sendfile.c: Likewise. * tests/sendfile64.c: Likewise. * tests/set_mempolicy.c: Likewise. * tests/setdomainname.c: Likewise. * tests/setfsgid.c: Likewise. * tests/setfsgid32.c: Likewise. * tests/setfsuid.c: Likewise. * tests/setfsuid32.c: Likewise. * tests/setgid.c: Likewise. * tests/setgid32.c: Likewise. * tests/setgroups.c: Likewise. * tests/setgroups32.c: Likewise. * tests/sethostname.c: Likewise. * tests/setregid.c: Likewise. * tests/setregid32.c: Likewise. * tests/setresgid.c: Likewise. * tests/setresgid32.c: Likewise. * tests/setresuid.c: Likewise. * tests/setresuid32.c: Likewise. * tests/setreuid.c: Likewise. * tests/setreuid32.c: Likewise. * tests/setrlimit.c: Likewise. * tests/setuid.c: Likewise. * tests/setuid32.c: Likewise. * tests/signalfd4.c: Likewise. * tests/socketcall.c: Likewise. * tests/splice.c: Likewise. * tests/stat.c: Likewise. * tests/stat64.c: Likewise. * tests/statfs.c: Likewise. * tests/statfs64.c: Likewise. * tests/swap.c: Likewise. * tests/symlink.c: Likewise. * tests/symlinkat.c: Likewise. * tests/sync.c: Likewise. * tests/sync_file_range.c: Likewise. * tests/sync_file_range2.c: Likewise. * tests/syslog.c: Likewise. * tests/tee.c: Likewise. * tests/time.c: Likewise. * tests/timer_create.c: Likewise. * tests/timer_xettime.c: Likewise. * tests/timerfd_xettime.c: Likewise. * tests/times-fail.c: Likewise. * tests/times.c: Likewise. * tests/truncate.c: Likewise. * tests/truncate64.c: Likewise. * tests/ugetrlimit.c: Likewise. * tests/umount.c: Likewise. * tests/umount2.c: Likewise. * tests/uname.c: Likewise. * tests/unix-pair-send-recv.c: Likewise. * tests/unlink.c: Likewise. * tests/unlinkat.c: Likewise. * tests/userfaultfd.c: Likewise. * tests/utimes.c: Likewise. * tests/vhangup.c: Likewise. * tests/vmsplice.c: Likewise. * tests/waitid.c: Likewise. * tests/waitpid.c: Likewise. * tests/xet_robust_list.c: Likewise. * tests/xetpgid.c: Likewise. * tests/xetpriority.c: Likewise. * tests/xettimeofday.c: Likewise.
2016-08-09 17:38:29 +03:00
#include <asm/unistd.h>
#include "scno.h"
#ifdef __NR_memfd_create
# include <stdio.h>
# include <stdint.h>
# include <unistd.h>
# ifdef HAVE_LINUX_MEMFD_H
# include <linux/memfd.h>
# endif
# ifndef MFD_HUGE_SHIFT
# define MFD_HUGE_SHIFT 26
# endif
# ifndef MFD_HUGE_MASK
# define MFD_HUGE_MASK 0x3f
# endif
static const char *errstr;
static long
k_memfd_create(const kernel_ulong_t name, const kernel_ulong_t flags)
{
const long rc = syscall(__NR_memfd_create, name, flags);
errstr = sprintrc(rc);
return rc;
}
int
main(void)
{
const size_t size = 255 - (sizeof("memfd:") - 1) + 1;
char *pattern = tail_alloc(size);
fill_memory_ex(pattern, size, '0', 10);
k_memfd_create((uintptr_t) pattern, 0);
printf("memfd_create(\"%.*s\"..., 0) = %s\n",
(int) size - 1, pattern, errstr);
kernel_ulong_t flags = (kernel_ulong_t) 0xfacefeed00000007ULL;
k_memfd_create((uintptr_t) pattern, flags);
printf("memfd_create(\"%.*s\"..., %s) = %s\n",
(int) size - 1, pattern,
"MFD_CLOEXEC|MFD_ALLOW_SEALING|MFD_HUGETLB",
errstr);
pattern[size - 1] = '\0';
flags = 30 << MFD_HUGE_SHIFT;
k_memfd_create((uintptr_t) pattern, flags);
printf("memfd_create(\"%s\", 30<<MFD_HUGE_SHIFT) = %s\n",
pattern, errstr);
pattern += size - 1;
flags = (kernel_ulong_t) -1ULL;
k_memfd_create(0, flags);
flags = -1U & ~(7 | (MFD_HUGE_MASK << MFD_HUGE_SHIFT));
printf("memfd_create(NULL, MFD_CLOEXEC|MFD_ALLOW_SEALING|MFD_HUGETLB"
"|%#x|%u<<MFD_HUGE_SHIFT) = %s\n",
(unsigned int) flags, MFD_HUGE_MASK, errstr);
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_memfd_create")
#endif