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When built with -O0, gcc (rightfully) generates function prologue, which
results in writing %rbp to the stack, causing premature KVM_EXIT_MMIO.
It could be possible to avoid such problems by "naked" attribute but,
unfortunately, the latter is not available on x86 with older GCC.
A trick suggested in [1] is used instead: assembly is moved
to the global scope.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50242#c3
* tests/ioctl_kvm_run.c (code): Remove function.
Add globally scoped __asm__ with the function code and its size.
(code, code_size): New extern symbols declarations.
(run_kvm): Remove code_size definition and initialization.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
As it has proven itself useful.
* tests/ioctl_kvm_run.c (run_kvm) <case KVM_EXIT_MMIO:>: Fail
on unexpected KVM_EXIT_MMIO, providing relevant diagnostics.
Recent glibc (since version 2.26) uses accept4 syscall for implementing
accept call on sparc. Unfortunately, it's impossible to simply fall
back on raw syscall as it had not been wired up until linux commit
v4.4-rc8~4^2~1.
* tests/accept_compat.h: New file.
* tests/Makefile.am (EXTRA_DIST): Add it.
* tests/net-y-unix.c: Include accept_compat.h, use do_accept()
instead of accept() calls.
* tests/net-yy-inet.c: Likewise.
* tests/net-yy-unix.c: Likewise.
* tests/net.expected: Allow accept4.
* xlat/pkey_access.in (PKEY_DISABLE_EXECUTE): New constant introduced
by linux kernel commit v4.16-rc1~93^2~85.
* tests/pkey_alloc.c: Update expected output.
* NEWS: Mention it.
Include "ptrace.h" before any header that can include <signal.h>
because on some architectures the latter may include <asm/sigcontext.h>
which in turn may include <asm/ptrace.h> with potentially devastating
effect on <sys/ptrace.h>.
* process.c: Include "ptrace.h" before "regs.h".
* rt_sigframe.c: Likewise.
* sigreturn.c: Include "ptrace.h" before "nsig.h".
* syscall.c: Likewise.
* wait.c: Include "ptrace.h" before <sys/wait.h>.
* strace.c: Include "ptrace.h" before <signal.h>.
* tests/ptrace.c: Likewise.
* tests/test_ucopy.c: Include <sys/ptrace.h> before <signal.h>.
* tests/accept.c [__NR_accept && !TEST_SYSCALL_NAME]: Define a wrapper that
calls accept directly.
* tests/sockname.c [TEST_SYSCALL_STR]: Do not define TEST_SYSCALL_STR.
gcc8 -Wall -Werror rejects our method of struct sockaddr_un.sun_path
initialization because the field lacks __nonstring__ attribute.
As we calculate the length of the string being copied anyway,
workaround this gcc+glibc bug by changing the code to use this
pre-calculated length and get rid of strncpy completely.
* tests/net-accept-connect.c (main): Use memcpy to initialize sun_path.
As definitions of O_* macros provided by various libc implementations
are usually less reliable than those provided by kernel headers, switch
to use kernel's fcntl.h header.
* open.c: Include <asm/fcntl.h> instead of <fcntl.h>. Remove
O_LARGEFILE fallback definitions assuming that the kernel headers
provide them.
* xlat/open_mode_flags.in: Add __O_SYNC after O_SYNC. Add O_TMPFILE
and __O_TMPFILE before O_DIRECTORY. Remove "O_TMPFILE & ~O_DIRECTORY".
* tests/open.c: Include <asm/fcntl.h> instead of <fcntl.h>. Remove
workarounds for libc O_TMPFILE implementations.
* tests/openat.c: Include <asm/fcntl.h> instead of <fcntl.h>.
(test_mode_flag): New function.
(main): Use it to check decoding of all access modes and file flags.
* tests/gen_tests.in (openat): Add -a option.
Co-Authored-by: Eugene Syromyatnikov <evgsyr@gmail.com>
As the remaining non-generated ioctl tests differ from ioctl.test only
in strace options, and since gen_tests.sh can pass arguments to sourced
tests, replace the remaining non-generated ioctl tests with invocations
of ioctl.test with appropriate parameters.
* tests/ioctl.test: Pass script arguments to the strace invocation.
* tests/gen_tests.in (ioctl_dm): New entry, invoke ioctl.test with -s9.
(ioctl_dm-v): New entry, invoke ioctl.test with -v -s9.
(ioctl_kvm_run): New entry, invoke ioctl.test with -a36 -y.
(ioctl_loop-nv): New entry, invoke ioctl.test with -a22 -e verbose=none.
(ioctl_nsfs): New entry, invoke ioctl.test with -esignal=none.
(ioctl_sock_gifconf): New entry, invoke ioctl.test with -a28 -s1.
(ioctl_evdev-v, ioctl_loop-v, ioctl_rtc-v): Invoke ioctl.test
with -v option instead of ioctl-v.sh.
* tests/ioctl_dm-v.test: Remove.
* tests/ioctl_dm.test: Likewise.
* tests/ioctl_kvm_run.test: Likewise.
* tests/ioctl_loop-nv.test: Likewise.
* tests/ioctl_nsfs.test: Likewise.
* tests/ioctl_sock_gifconf.test: Likewise.
* tests/ioctl-v.sh: Likewise.
* tests/Makefile.am (DECODER_TESTS, EXTRA_DIST): Remove them.
* tests/gen_tests.sh: Read first argument separately, put it in $arg0,
and the rest of the arguments in $args.
(case "$arg0" in) <+*)>: Set command line to $args and source $arg0.
* futex.c (VALP, VALP_PR, VAL2P, VAL2P_PR): New macro definitions.
(main): Allow EINVAL on *REQUEUE* checks with VAL/VAL2 with higher bit
being set, check that the existing behaviour preserved with VALP/VAL2P
where higher bit is unset.
* tests/set_ptracer_any.c (main) [HAVE_PRCTL]: Provide fallback
definitions for PR_SET_PTRACER and PR_SET_PTRACER_ANY constants,
set all unused prctl arguments to 0.
If the kernel contains commit 84d77d3f06e7e8dea057d10e8ec77ad71f721be3,
both PTRACE_PEEKDATA and process_vm_readv become unavailable when the
process dumpable flag is cleared, on ia64 this results to all syscall
arguments being unavailable.
Recognize this situation and do not treat it as get_syscall_args error
because the latter leaves the tracee in a ptrace stop.
This condition used to be triggered by prctl-dumpable test that caused
strace to hang indefinitely.
* linux/ia64/get_syscall_args.c (get_syscall_args): Do not bail out
if umove fails.
* tests/prctl-dumpable.c [__ia64__]: Skip the test.
* tests/xselect.c (main) [PATH_TRACING_FD]: Skip if /proc/self/fd/
is not available. Add test calls that use PATH_TRACING_FD.
(main): Conditionalize expected output for those calls
that do not use PATH_TRACING_FD with [!PATH_TRACING_FD].
* tests/_newselect-P.c: New file.
* tests/select-P.c: Likewise.
* tests/Makefile.am (check_PROGRAMS): Add _newselect-P and select-P.
* tests/.gitignore: Likewise.
* tests/gen_tests.in (_newselect-P, select-P): New entries.
* tests/tests.h [!perror_msg_and_fail] (perror_msg_and_fail): New macro
wrapper around the homonymous function.
[!error_msg_and_fail] (error_msg_and_fail): Likewise.
* tests/error_msg.c (perror_msg_and_fail, error_msg_and_fail): New
macros defined to themselves.
By very popular demand.
While we are here, let's refactor the condition for old_mmap_pgoff into
an arch-specific one, as it is used more than in one place.
* NEWS: Mention this.
* strace.1.in (.SH "MULTIPLE PERSONALITY SUPPORT"): Likewise.
* configure.ac (case "$host_cpu" in) <s390x>: Set arch_m32 to s390, set
cc_flags_m32 to -m31.
(st_MPERS([m32])): Add s390x.
* defs.h [S390X]: Define NEED_UID16_PARSERS.
* linux/s390/arch_sigreturn.c [!S390_FRAME_PTR] (S390_FRAME_PTR): New
macro, define to s390_frame_ptr.
[!SIGNAL_FRAMESIZE] (SIGNAL_FRAMESIZE): New macro, define to
__SIGNAL_FRAMESIZE.
[!PTR_TYPE] (PTR_TYPE): New macro, define to unsigned long.
(arch_sigreturn): Use S390_FRAME_PTR, SIGNAL_FRAMESIZE, and PTR_TYPE
instead of s390_frame_ptr, __SIGNAL_FRAMESIZE, and pointer-sized type,
respectively.
* linux/s390/get_error.c [!ARCH_REGSET] (ARCH_REGSET): New macro, define
* to s390_regset.
(get_error): Use it instead of s390_regset.
* linux/s390/get_scno.c (arch_get_scno): Likewise.
* linux/s390/get_syscall_args.c (get_syscall_args): Likewise.
* linux/s390/set_error.c (arch_set_error, arch_set_success): Likewise.
* linux/s390/set_scno.c (arch_set_scno): Likewise.
* linux/s390x/arch_regs.c (psw_compat_t, s390_compat_regs,
s390x_regs_union, s390_frame_ptr, s390x_frame_ptr, s390x_io): New
variables.
(s390_regset, s390x_regset, ARCH_REGS_FOR_GETREGSET,
ARCH_IOVEC_FOR_GETREGSET, ARCH_PC_REG, ARCH_PERSONALITY_0_IOV_SIZE,
ARCH_PERSONALITY_1_IOV_SIZE): New macros.
* linux/s390x/arch_regs.h (s390_frame_ptr, s390x_frame_ptr): New
prototypes.
* linux/s390x/arch_rt_sigframe.c: Conditionalize on tcp->currpers.
* linux/s390x/arch_sigreturn.c: Likewise.
* linux/s390x/get_error.c: Likewise.
* linux/s390x/get_scno.c: Likewise.
* linux/s390x/get_syscall_args.c: Likewise.
* linux/s390x/set_error.c: Likewise.
* linux/s390x/set_scno.c: Likewise.
* linux/s390x/errnoent1.h: New file.
* linux/s390x/ioctls_arch1.h: Likewise.
* linux/s390x/ioctls_inc1.h: Likewise.
* linux/s390x/signalent1.h: Likewise.
* linux/s390x/syscallent1.h: Likewise.
* Makefile.am (EXTRA_DIST): Add new files added to linux/s390x.
* supported_personalities.h [S390X] (SUPPORTED_PERSONALITIES): Define
to 2.
* tests/strace-V.test: Add s390 to the list of architectures that have
m32 personality.
* linux/s390/arch_defs.h (HAVE_ARCH_OLD_MMAP_PGOFF): New macro.
* linux/s390x/arch_defs.h: Likewise.
* mem.c: Replace #ifdef S390 with #ifdef HAVE_ARCH_OLD_MMAP_PGOFF.
* pathtrace.c: Likewise.
* tests/ppoll.c (main) [PATH_TRACING_FD]: Skip if /proc/self/fd/
is not available. Add a test call that use PATH_TRACING_FD.
(main): Conditionalize expected output for those calls
that do not use PATH_TRACING_FD with [!PATH_TRACING_FD].
* tests/ppoll-P.c: New file.
* tests/pure_executables.list: Add ppoll-P.
* tests/.gitignore: Likewise.
* tests/gen_tests.in (ppoll-P): New entry.
* tests/poll.c (main) [PATH_TRACING_FD]: Skip if /proc/self/fd/
is not available. Add tests calls that use PATH_TRACING_FD.
(main): Conditionalize expected output for those calls
that do not use PATH_TRACING_FD with [!PATH_TRACING_FD].
* tests/poll-P.c: New file.
* tests/pure_executables.list: Add poll-P.
* tests/.gitignore: Likewise.
* tests/poll-P.test: New test.
* tests/Makefile.am (DECODER_TESTS): Add poll-P.test.
As s390x is the only 64-bit architecture that has old_mmap,
the test needs some adjustments there.
* tests/old_mmap.c: Update condition.
(main): Change int types to long, extend numerals to 64 bit, change
printing format qualifiers to corresponding long types.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
* tests/old_mmap.c [!TEST_FD]: Define TEST_FD.
(main) <args1_c>: Replace 5th argument with TEST_FD.
(main): Wrap the output for the calls that do not use TEST_FD
with #ifndef PATH_TRACING.
* tests/old_mmap-P.c: New file.
* tests/pure_executables.list: Add old_mmap-P.
* tests/.gitignore: Likewise.
* tests/gen_tests.in: Add old_mmap-P test.
Because some architectures are very, very special.
* configure.ac (cc_flags_m32, cc_flags_mx32): New variables. AC_SUBST
them.
* m4/mpers.m4 (MPERS_CFLAGS): Use instead of CFLAG, pushdef as
$cc_flags_$1.
Use mpers_name instead of CFLAG in AC_CACHE_CHECK messages.
Pass MPERS_CFLAGS as the second argument to mpers_test.sh
* mpers.sh: Add CC_ARCH_FLAGS as the second argument (PARSER_FILE
is moved to the third one). Do not expect leading dash in ARCH_FLAG
anymore.
* mpers_test.sh (mpers_cc_flags): New variable, initialise to the second
command line argument.
Pass $mpers_name without leading dash to mpers.sh.
Pass $mpers_cc_flags as the second argument to mpers.sh ($sample is
the third argument now).
* Makefile.am (mpers-m%.stamp:): Pass $(mpers_CC_FLAGS) as the second
argument to mpers.sh ($$f is now the third argument).
($(mpers_m32_targets)): Define target variable mpers_CC_FLAGS with the
value of @cc_flags_m32@
($(mpers_mx32_targets)): Define target variable mpers_CC_FLAGS with the
value of @cc_flags_mx32@
* tests/Makefile.am (MERS_CC_FLAGS): New variable.
* bootstrap: Append @cc_flags_$1@ to MPERS_CC_FLAGS. Append
$(MPERS_CC_FLAGS) to ARCH_MFLAGS.
Validate syscall set before the whole fault injection syntax.
* filter_qualify.c (parse_inject_expression): Add const qualifier to
return type. Return an empty string when no syscall set is specified.
(qualify_inject_common): Add const qualifier to "name". Move
qualify_syscall_tokens invocation right after parse_inject_expression.
* tests/qual_fault-syntax.test: Update expected output.
* tests/qual_inject-syntax.test: Likewise.
In particular, check for the recent fixes in reboot syscall decoder.
* tests/gen_tests.in (reboot): Provide -s 256 option.
* tests/reboot.c (STR32, STR128): New macros.
(main): Add more checks.
* configure.ac (arch_native): New variable, set to arch.
* tests/Makefile.am (NATIVE_ARCH): New variable, set to @arch_native@.
(AM_TEST_LOG_FLAGS): Pass NATIVE_ARCH as STRACE_NATIVE_ARCH environment
variable.
